/* ===== 张工教育 设计规范 ===== */
:root{
--brand:#1387c0;
--brand-rgb:19,135,192;
--brand-2:#0F74A8;
--brand-3:#084A6B;
--brand-t1:#EAF4FC;
--brand-t2:#E3EEF5;
--brand-t3:#D4E7F4;
--accent:#F4520D;
--accent-rgb:244,82,13;
--accent-d:#D4450A;
--gold:#FAEDD1;
--gold-t1:#FCF6E8;
--gold-bd:#E6DAC0;
--ink:#16202C;
--ink-2:#3A4654;
--muted:#6B7A8C;
--bg:#FBF7F0;
--card:#FFFFFF;
--line:#EDE4D3;
--ok:#17A673;
--radius:12px;
--radius-lg:18px;
--shadow:0 2px 12px rgba(16,32,56,.07);
--shadow-lg:0 12px 34px rgba(16,32,56,.14);
--max:1200px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
color:var(--ink);background:var(--bg);font-size:16px;line-height:1.72;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
img{display:block;max-width:100%}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input,select,textarea{font-family:inherit;font-size:inherit}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
.sec{padding:56px 0}
.sec-sm{padding:36px 0}
/* 通用标题 */
.t-head{text-align:center;margin-bottom:32px}
.t-head h2{font-size:32px;font-weight:800;letter-spacing:-.5px}
.t-head h2 span{color:var(--accent)}
.t-head p{color:var(--muted);margin-top:8px;font-size:16px}
.eyebrow{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--accent);
background:rgba(19,135,192,.1);padding:4px 12px;border-radius:99px;font-weight:700;margin-bottom:12px}
/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;
padding:10px 20px;border-radius:8px;font-size:14px;font-weight:600;transition:.2s;white-space:nowrap}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-d);transform:translateY(-1px);box-shadow:0 6px 16px rgba(19,135,192,.3)}
.btn-brand{background:var(--brand);color:#fff}
.btn-brand:hover{background:var(--brand-2)}
.btn-ghost{background:#fff;color:var(--brand);border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--brand-2);color:var(--brand-2)}
.btn-outline{background:transparent;color:var(--accent);border:1px solid var(--accent)}
.btn-outline:hover{background:var(--accent);color:#fff}
.btn-lg{padding:14px 32px;font-size:16px;border-radius:10px}
.btn-block{width:100%}
.btn-sm{padding:6px 14px;font-size:13px;border-radius:6px}
/* ===== 顶部条 ===== */
/* 顶部「下载 APP / 学习中心 / 学员登录」条已按需求移除 */
/* ===== 导航 ===== */
header.site{position:sticky;top:0;z-index:80;background:#fff;border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;height:70px;gap:28px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo .mark{width:40px;height:40px;border-radius:10px;background:linear-gradient(135deg,var(--brand),var(--brand-2));
display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:19px;letter-spacing:-1px}
.logo .txt b{display:block;font-size:18px;font-weight:800;letter-spacing:-.5px;line-height:1.2}
.logo .txt i{display:block;font-style:normal;font-size:11px;color:var(--muted);letter-spacing:1px}
/* 后台「站点设置 → 站点 Logo」自定义图片 logo */
.logo-img{height:40px;width:auto;max-width:180px;display:block;object-fit:contain}
.foot-logo{height:44px;margin-bottom:14px;background:#fff;border-radius:9px;padding:3px 8px;max-width:200px}
.menu{display:flex;gap:4px;flex:1}
.menu>li{position:relative}
.menu>li>a{display:flex;align-items:center;gap:4px;padding:10px 12px;font-size:15px;font-weight:600;
border-radius:8px;transition:.18s;color:var(--ink);white-space:nowrap}
@media(max-width:1150px){
.menu>li>a{padding:10px 8px;font-size:14px}
.search{width:150px}
.nav{gap:16px}
}
.menu>li>a:hover,.menu>li>a.on{color:var(--accent);background:rgba(19,135,192,.07)}
.menu>li>a .caret{width:8px;height:8px;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;
transform:rotate(45deg) translateY(-2px);opacity:.6}
/* 下拉 */
.drop{position:absolute;top:100%;left:0;background:#fff;border:1px solid var(--line);border-radius:12px;
box-shadow:var(--shadow-lg);padding:14px;display:none;min-width:520px;z-index:90}
.menu>li:hover .drop{display:block}
.drop .cols{display:flex;gap:26px}
.drop h4{font-size:13px;color:var(--muted);margin-bottom:8px;font-weight:700;letter-spacing:.5px}
.drop .grid{display:grid;grid-template-columns:repeat(3,1fr);gap:2px}
.drop .grid a{display:block;padding:6px 10px;border-radius:6px;font-size:14px;transition:.15s}
.drop .grid a:hover{background:rgba(21,96,189,.08);color:var(--brand-2)}
.drop .grid a em{font-style:normal;font-size:11px;color:var(--accent);margin-left:4px}
.drop .grid a i{display:block;font-style:normal;font-size:11px;color:var(--muted);margin-top:1px;
white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nav-right{display:flex;align-items:center;gap:14px;flex-shrink:0}
.search{display:flex;align-items:center;background:#F1F4F8;border-radius:99px;padding:6px 14px;width:190px;
border:1px solid transparent;transition:.2s}
.search:focus-within{border-color:var(--brand-2);background:#fff}
.search input{border:none;background:none;outline:none;width:100%;font-size:13.5px}
.cart-btn{position:relative;display:flex;align-items:center;gap:6px;font-size:14px;font-weight:600;padding:8px 12px;
border-radius:8px;transition:.18s}
.cart-btn:hover{background:rgba(19,135,192,.08);color:var(--accent)}
.cart-badge{position:absolute;top:-2px;right:-2px;min-width:17px;height:17px;background:var(--accent);color:#fff;
font-size:11px;border-radius:99px;display:none;align-items:center;justify-content:center;padding:0 4px;font-weight:700}
.cart-badge.show{display:flex}
/* 移动端菜单 */
.menu-toggle{display:none;align-items:center;gap:6px;font-size:14px;font-weight:600;padding:8px 10px;border-radius:8px}
.menu-toggle:hover{background:rgba(19,135,192,.08);color:var(--accent)}
.m-menu{position:fixed;inset:0;background:#fff;z-index:220;transform:translateX(-100%);transition:.26s;overflow:auto;padding:16px 18px 40px}
.m-menu.show{transform:none}
.m-menu .mh{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.m-menu .mh b{font-size:17px}
.m-menu h4{font-size:13px;color:var(--muted);margin:16px 0 8px;font-weight:700}
.m-menu .mg{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.m-menu .mg a{border:1px solid var(--line);border-radius:8px;padding:9px 6px;text-align:center;font-size:13.5px}
.m-menu .mg a:hover{border-color:var(--brand-2);color:var(--brand-2)}
.m-menu .ml a{display:block;padding:12px 0;border-bottom:1px solid var(--line);font-size:15px;font-weight:600}
/* ===== 首页 Banner ===== */
.hero{position:relative;background:linear-gradient(120deg,#084A6B 0%,#0A5880 45%,#0F74A8 100%);color:#fff;overflow:hidden}
.hero::after{content:"";position:absolute;inset:0;
background:radial-gradient(900px 400px at 78% 20%,rgba(19,135,192,.28),transparent 60%),
radial-gradient(600px 300px at 10% 90%,rgba(21,96,189,.35),transparent 60%)}
.hero .wrap{position:relative;z-index:2;display:grid;grid-template-columns:1fr 360px;gap:40px;
align-items:center;padding-top:46px;padding-bottom:46px;min-height:420px}
.hero-tag{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);
padding:5px 14px;border-radius:99px;font-size:12.5px;margin-bottom:18px;backdrop-filter:blur(4px)}
.hero-tag i{width:6px;height:6px;border-radius:99px;background:var(--gold);display:block;
box-shadow:0 0 0 4px rgba(255,180,0,.25)}
.hero h1{font-size:42px;font-weight:800;line-height:1.25;letter-spacing:-1px}
.hero h1 em{font-style:normal;color:var(--gold)}
.hero p.sub{margin-top:16px;font-size:16px;color:rgba(255,255,255,.82);max-width:560px}
.hero-btns{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap}
.hero .btn-primary{background:#F4520D}
.hero .btn-primary:hover{background:#D4450A;box-shadow:0 6px 16px rgba(74,147,255,.35)}
.hero-stats{display:flex;gap:34px;margin-top:34px;flex-wrap:wrap}
.hero-stats div b{display:block;font-size:26px;font-weight:800;color:var(--gold);line-height:1.2}
.hero-stats div span{font-size:12.5px;color:rgba(255,255,255,.7)}
/* 报名卡 */
.hero-card{background:#fff;color:var(--ink);border-radius:var(--radius-lg);padding:22px;box-shadow:var(--shadow-lg)}
.hero-card h3{font-size:17px;font-weight:800;margin-bottom:4px}
.hero-card .tip{font-size:12.5px;color:var(--muted);margin-bottom:14px}
.hero-card input,.hero-card select{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:8px;
margin-bottom:10px;font-size:14px;outline:none;background:#FAFBFD}
.hero-card input:focus,.hero-card select:focus{border-color:var(--brand-2)}
.hero-card .agree{font-size:11.5px;color:var(--muted);margin-top:10px;line-height:1.5}
/* ===== 快捷分类 ===== */
.quick{background:#fff;border-bottom:1px solid var(--line);padding:26px 0}
.quick-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}
.q-item{border:1px solid var(--line);border-radius:var(--radius);padding:14px 10px;text-align:center;transition:.2s;background:#fff}
.q-item:hover{border-color:var(--brand-2);transform:translateY(-3px);box-shadow:var(--shadow)}
.q-item .ic{width:42px;height:42px;margin:0 auto 8px;border-radius:11px;display:flex;align-items:center;justify-content:center;
background:linear-gradient(135deg,#FBF1E0,#F5E7CE);color:var(--brand);font-weight:800;font-size:15px}
.q-item b{display:block;font-size:14px;font-weight:700}
.q-item span{font-size:11.5px;color:var(--muted)}
/* ===== 层级切换卡 ===== */
.tier-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.tier{position:relative;border-radius:var(--radius-lg);padding:30px;color:#fff;overflow:hidden;min-height:210px;
display:flex;flex-direction:column;justify-content:center;transition:.25s}
.tier:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.tier.a{background:linear-gradient(135deg,#0A5880,#1E93CC)}
.tier.b{background:linear-gradient(135deg,#1387c0,#57B6E8)}
.tier::after{content:"";position:absolute;right:-40px;bottom:-50px;width:200px;height:200px;border-radius:50%;
background:rgba(255,255,255,.09)}
.tier h3{font-size:24px;font-weight:800;position:relative;z-index:2}
.tier p{font-size:14px;opacity:.88;margin-top:8px;position:relative;z-index:2;max-width:90%}
.tier .tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:16px;position:relative;z-index:2}
.tier .tags span{background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.25);
padding:4px 11px;border-radius:99px;font-size:12.5px;backdrop-filter:blur(3px)}
.tier .go{margin-top:18px;position:relative;z-index:2;font-size:14px;font-weight:700;display:inline-flex;align-items:center;gap:6px;
background:rgba(255,255,255,.95);color:var(--ink);padding:8px 16px;border-radius:8px;align-self:flex-start}
/* ===== 课程卡 ===== */
.courses-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.courses-grid.c3{grid-template-columns:repeat(3,1fr)}
.course-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
display:flex;flex-direction:column;transition:.22s}
.course-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#D3DCE8}
/* 老内核兜底：微信电脑版内置浏览器（Chromium <88）不支持 aspect-ratio，封面高度会塌陷 */
@supports not (aspect-ratio: 1) {
.cc-cover,.qz-cover,.pd-main{height:210px}
.pd-thumb.img{height:120px}
.v-thumb{height:120px}
}
.cc-cover{position:relative;aspect-ratio:1/1;display:flex;align-items:center;justify-content:center;color:#fff;overflow:hidden;text-decoration:none}
/* 卡片封面沿用「主图设置」第一张图：铺满封面，角标 / hover 层仍在最上 */
.cc-cover .cc-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:1}
.cc-body h4 a{color:inherit;text-decoration:none}
.cc-body h4 a:hover{color:var(--accent)}
.cc-cover .label{position:relative;z-index:2;text-align:center;padding:0 16px}
.cc-cover .label b{display:block;font-size:19px;font-weight:800;letter-spacing:-.3px;text-shadow:0 2px 8px rgba(0,0,0,.25)}
.cc-cover .label i{font-style:normal;font-size:12px;opacity:.9;display:block;margin-top:4px}
.cc-cover .badge{position:absolute;top:10px;left:10px;z-index:3;background:rgba(0,0,0,.4);backdrop-filter:blur(4px);
font-size:11px;padding:3px 9px;border-radius:99px;font-weight:600}
.cc-cover .free{background:var(--ok)}
.cc-cover .go{position:absolute;inset:0;z-index:3;display:flex;align-items:center;justify-content:center;
background:rgba(10,43,82,.42);opacity:0;transition:.2s}
.course-card:hover .cc-cover .go{opacity:1}
.cc-cover .go span{background:rgba(255,255,255,.96);color:var(--brand);font-size:13px;font-weight:700;
padding:9px 20px;border-radius:99px;box-shadow:0 6px 18px rgba(0,0,0,.25);display:flex;align-items:center;gap:5px}
.cc-body{padding:14px;display:flex;flex-direction:column;flex:1}
.cc-body h4{font-size:16px;font-weight:700;line-height:1.45;margin-bottom:8px;
display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:42px}
.cc-meta{font-size:12px;color:var(--muted);display:flex;flex-wrap:wrap;gap:10px;margin-bottom:10px}
.cc-tea{font-size:12.5px;color:var(--ink-2);margin-bottom:12px;display:flex;gap:6px;align-items:center}
.cc-tea .av{width:20px;height:20px;border-radius:50%;background:var(--brand);color:#fff;font-size:10px;
display:flex;align-items:center;justify-content:center;flex-shrink:0}
.cc-foot{margin-top:auto;display:flex;align-items:flex-end;justify-content:space-between;gap:8px;padding-top:10px;border-top:1px dashed var(--line)}
.price{color:var(--accent);font-weight:800;font-size:20px;line-height:1}
.price small{font-size:13px;font-weight:600}
.price del{display:block;font-size:12px;color:var(--muted);font-weight:400;margin-bottom:2px}
.price.zero{color:var(--ok)}
/* ===== 试听视频区 ===== */
.trial-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.v-card{background:#fff;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);transition:.22s}
.v-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.v-thumb{position:relative;aspect-ratio:16/9;display:flex;align-items:center;justify-content:center;cursor:pointer;overflow:hidden}
.v-thumb .bg{position:absolute;inset:0}
.v-thumb .tri{position:relative;z-index:2;width:52px;height:52px;border-radius:50%;background:rgba(255,255,255,.9);
display:flex;align-items:center;justify-content:center;transition:.2s}
.v-card:hover .v-thumb .tri{transform:scale(1.1);background:#fff}
.v-thumb .dur{position:absolute;right:8px;bottom:8px;z-index:2;background:rgba(0,0,0,.62);color:#fff;font-size:11px;
padding:2px 7px;border-radius:4px}
.v-thumb .cnt{position:absolute;left:8px;bottom:8px;z-index:2;font-size:11px;color:rgba(255,255,255,.92);
display:flex;align-items:center;gap:4px;text-shadow:0 1px 3px rgba(0,0,0,.5)}
.v-body{padding:12px 14px 14px}
.v-body h4{font-size:15.5px;font-weight:700;line-height:1.45;margin-bottom:6px;
display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:42px}
.v-body .m{font-size:12px;color:var(--muted);display:flex;justify-content:space-between}
/* ===== 课程详情「免费试听」方案A 影院式：播放器置顶常驻 + 右侧观看目录 ===== */
.ct-stage{display:grid;grid-template-columns:1.7fr 1fr;gap:18px}
.ct-left{display:flex;flex-direction:column;gap:10px;min-width:0}
.ct-player{position:relative;background:#0c1622;border-radius:12px;overflow:hidden;aspect-ratio:16/9}
.ct-player video{width:100%;height:100%;display:block;background:#000}
.ct-ph{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;color:rgba(255,255,255,.85);
background:radial-gradient(120% 120% at 30% 20%,#1c4f73,#0c1622 70%)}
.ct-ph-ic{width:64px;height:64px;border-radius:50%;background:rgba(255,255,255,.92);color:var(--brand-2);display:flex;align-items:center;justify-content:center;font-size:22px}
.ct-now{font-size:13px;color:var(--muted);padding:2px 2px;min-height:20px}
.ct-now b{color:var(--ink,#1f2a36)}
.ct-right{display:flex;flex-direction:column;max-height:400px;border:1px solid var(--line);border-radius:12px;background:#fff;overflow:hidden}
.ct-dh{padding:13px 16px;font-weight:800;font-size:15px;border-bottom:1px solid var(--line)}
.ct-right .trial-cats{padding:10px 12px;border-bottom:1px solid var(--line);display:flex;flex-wrap:wrap;gap:8px}
.ct-list{flex:1;min-height:0;overflow:auto;padding:8px}
.ct-it{display:flex;align-items:center;gap:12px;padding:10px;border-radius:10px;cursor:pointer}
.ct-it:hover{background:#F6F8FB}
.ct-it.on{background:#EAF4FB}
.ct-no{width:26px;height:26px;flex:none;border-radius:7px;background:#EEF3F8;color:var(--brand-2);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center}
.ct-it.on .ct-no{background:var(--brand);color:#fff}
.ct-tt{flex:1;min-width:0}
.ct-tt b{display:block;font-size:13.5px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ct-tt span{font-size:11.5px;color:var(--muted)}
.ct-dur{font-size:11.5px;color:var(--muted);flex:none}
.ct-live{font-size:11px;color:var(--ok);font-weight:700;flex:none}
.ct-empty{padding:30px 14px;text-align:center;color:var(--muted);font-size:13px}
@media(max-width:820px){.ct-stage{grid-template-columns:1fr}.ct-list{max-height:400px}}
/* ===== 服务/优势 ===== */
.feat-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.feat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 18px;text-align:center;transition:.2s}
.feat:hover{border-color:var(--brand-2);transform:translateY(-3px);box-shadow:var(--shadow)}
.feat .ic{width:48px;height:48px;margin:0 auto 12px;border-radius:13px;background:linear-gradient(135deg,#FBF1E0,#DCE8F7);
display:flex;align-items:center;justify-content:center}
.feat b{display:block;font-size:15px;margin-bottom:6px}
.feat p{font-size:12.5px;color:var(--muted);line-height:1.6}
/* ===== 师资 ===== */
.tea-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.tea{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;text-align:center;transition:.22s}
.tea:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.tea .av{width:72px;height:72px;border-radius:50%;margin:0 auto 12px;display:flex;align-items:center;justify-content:center;
color:#fff;font-size:24px;font-weight:800}
.tea b{display:block;font-size:16px}
.tea .role{font-size:12.5px;color:var(--accent);font-weight:600;margin:4px 0 8px}
.tea p{font-size:12.5px;color:var(--muted);line-height:1.6}
/* ===== 战绩/口碑 ===== */
.stat-band{background:linear-gradient(120deg,#084A6B,#0F74A8);color:#fff}
.stat-row{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;text-align:center;padding:38px 0}
.stat-row b{display:block;font-size:34px;font-weight:800;color:var(--gold);line-height:1.1}
.stat-row span{font-size:13px;color:rgba(255,255,255,.75)}
.say-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.say{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.say .top{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.say .top .av{width:38px;height:38px;border-radius:50%;background:var(--brand-2);color:#fff;display:flex;
align-items:center;justify-content:center;font-size:14px;font-weight:700}
.say .top b{font-size:14px}
.say .top span{display:block;font-size:11.5px;color:var(--muted)}
.say p{font-size:13.5px;color:var(--ink-2);line-height:1.7}
/* ===== 学员评价 · 截图证言墙（瀑布流） ===== */
.say-tabs{display:flex;justify-content:center;gap:10px;margin:-8px 0 26px;flex-wrap:wrap}
.say-tabs .stab{border:1px solid var(--line);background:#fff;color:var(--ink-2);border-radius:22px;
padding:8px 20px;font-size:14px;cursor:pointer;font-family:inherit;transition:.18s;display:flex;align-items:center;gap:7px}
.say-tabs .stab i{font-style:normal;font-size:12px;background:#F0F2F5;color:var(--muted);
border-radius:10px;padding:1px 7px;min-width:18px;text-align:center}
.say-tabs .stab:hover{border-color:var(--brand-2);color:var(--brand)}
.say-tabs .stab.on{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:700}
.say-tabs .stab.on i{background:rgba(255,255,255,.22);color:#fff}
.say-empty{grid-column:1/-1;text-align:center;color:var(--muted);font-size:14px;padding:40px 0;
border:1px dashed var(--line);border-radius:12px}
/* 专业筛选：只看某一个专业的评价 / 经验 */
.say-majors{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin:-6px 0 22px}
.say-majors .mchip{border:1px solid var(--line);background:#fff;color:var(--ink-2);border-radius:20px;
padding:6px 14px;font-size:13px;cursor:pointer;font-family:inherit;transition:.18s;display:flex;align-items:center;gap:6px}
.say-majors .mchip i{font-style:normal;font-size:11px;background:#F0F2F5;color:var(--muted);
border-radius:9px;padding:1px 6px;min-width:16px;text-align:center}
.say-majors .mchip:hover{border-color:var(--brand-2);color:var(--brand)}
.say-majors .mchip.on{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:700}
.say-majors .mchip.on i{background:rgba(255,255,255,.22);color:#fff}
/* 卡片 / 弹窗里的专业小标签 */
.say-card .sc-tags .mj{margin-left:auto;font-size:11px;color:var(--brand);background:rgba(11,58,111,.07);
padding:2px 8px;border-radius:20px;white-space:nowrap}
.say-detail .sd-head .mj{font-size:11.5px;color:var(--brand);background:rgba(11,58,111,.07);
padding:3px 10px;border-radius:20px}
/* 网格：一屏 6 个（3 列 × 2 行），多出来的在同一个区块里纵向滚动 */
.say-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;
max-height:calc(360px * 2 + 16px);overflow-y:auto;overflow-x:hidden;padding:4px 8px 4px 2px;
scroll-behavior:smooth;-webkit-overflow-scrolling:touch}
.say-grid::-webkit-scrollbar{width:8px}
.say-grid::-webkit-scrollbar-thumb{background:#D6DCE4;border-radius:8px}
.say-grid::-webkit-scrollbar-thumb:hover{background:#BFC9D6}
.say-grid::-webkit-scrollbar-track{background:#F2F4F7;border-radius:8px}
/* 统一尺寸卡片：高度固定 360，有截图 / 无截图高度一致，正文超长截断 */
.say-card{height:360px;display:flex;flex-direction:column;
border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff;cursor:pointer;
box-shadow:0 2px 10px rgba(15,40,70,.05);transition:transform .2s ease,box-shadow .2s ease}
.say-card:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(15,40,70,.14)}
.say-card.q1{background:#FBF7F0}
.say-card.q2{background:#F4F8FB}
.say-card.q3{background:#FBF4F4}
.say-card.q4{background:#F3F8F4}
.say-card .sc-shot{flex:none;height:152px;overflow:hidden;background:#F2F4F7;position:relative}
.say-card .sc-shot img{width:100%;height:100%;object-fit:cover;display:block}
.say-card .sc-body{flex:1 1 auto;min-height:0;padding:13px 16px 0;overflow:hidden}
.say-card .sc-tags{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:9px}
.say-card .tag{font-size:11px;background:rgba(11,58,111,.07);color:var(--brand);
padding:2px 8px;border-radius:20px;letter-spacing:.5px;white-space:nowrap}
.say-card .tag.exp{background:var(--accent);color:#fff}
.say-card .sc-text{font-size:13.5px;line-height:1.75;color:var(--ink-2);margin:0;
display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}
/* 没截图时正文给更多行、字号略大，卡片整体高度不变 */
.say-card.no-shot .sc-text{-webkit-line-clamp:10;font-size:14.5px;line-height:1.9}
.say-card .sc-foot{flex:none;height:58px;display:flex;align-items:center;gap:9px;padding:0 16px;
border-top:1px solid rgba(15,40,70,.07)}
.say-card .sc-more{margin-left:auto;font-size:12px;color:var(--brand);white-space:nowrap}
.say-card:hover .sc-more{text-decoration:underline}
/* 通用：星级 / 署名 / 来源 */
.say-card .stars,.say-detail .stars{color:#F5A623;font-size:12.5px;letter-spacing:1px;white-space:nowrap}
.say-card .who{display:flex;flex-direction:column;justify-content:center;min-width:0}
.say-card .who b{display:block;font-size:13.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.say-card .who i{display:block;font-size:11.5px;font-style:normal;color:var(--muted);
white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:150px}
.say-card .av{width:32px;height:32px;border-radius:50%;color:#fff;display:flex;align-items:center;
justify-content:center;font-size:12.5px;font-weight:700;flex:none}
/* 弹窗全文：备考经验文字长，这里完整展示 */
.say-detail .sd-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding-bottom:14px;
border-bottom:1px solid var(--line);margin-bottom:16px}
.say-detail .sd-head .av{width:40px;height:40px;border-radius:50%;color:#fff;display:flex;align-items:center;
justify-content:center;font-size:15px;font-weight:700;flex:none}
.say-detail .sd-head .who b{font-size:15px}
.say-detail .sd-head .who i{font-style:normal;font-size:12px;color:var(--muted)}
.say-detail .sd-head .tag{margin-left:auto;font-size:11px;background:rgba(11,58,111,.07);
color:var(--brand);padding:3px 10px;border-radius:20px}
.say-detail .sd-head .tag.exp{background:var(--accent);color:#fff}
.say-detail .sd-shot{margin-bottom:16px;border-radius:12px;overflow:hidden;border:1px solid var(--line);background:#F2F4F7}
.say-detail .sd-shot img{width:100%;display:block;cursor:zoom-in}
.say-detail .sd-text{font-size:14.5px;line-height:1.95;color:var(--ink-2);white-space:normal}
/* 备考经验：按后台设置的小标题分段，段与段之间留白，避免文字挤成一坨 */
.say-detail .sd-sec{display:flex;flex-direction:column;gap:20px}
.say-detail .sd-blk h5{display:flex;align-items:center;gap:9px;font-size:15.5px;font-weight:800;
color:var(--ink);margin:0 0 8px;line-height:1.5}
.say-detail .sd-blk h5 i{font-style:normal;width:22px;height:22px;border-radius:50%;background:var(--brand);
color:#fff;font-size:12px;display:flex;align-items:center;justify-content:center;flex:none}
.say-detail .sd-blk p{font-size:14.5px;line-height:1.95;color:var(--ink-2);margin:0;padding-left:31px}
.say-detail .sd-from{margin-top:14px;font-size:12px;color:var(--muted)}
/* 截图放大灯箱 */
.shot-lb{position:fixed;inset:0;z-index:9999;background:rgba(8,15,24,.86);display:none;
align-items:center;justify-content:center;padding:24px;cursor:zoom-out}
.shot-lb.show{display:flex}
.shot-lb img{max-width:min(940px,94vw);max-height:90vh;border-radius:10px;
box-shadow:0 24px 70px rgba(0,0,0,.55)}
@media(max-width:1000px){
.say-grid{grid-template-columns:repeat(2,1fr);max-height:calc(340px * 2 + 16px)}
.say-card{height:340px}
}
@media(max-width:640px){
/* 移动端单列，跟着页面自然纵向滚动，不再嵌套滚动区 */
.say-grid{grid-template-columns:1fr;max-height:none;overflow:visible}
.say-card{height:340px}
}
/* ===== 流程 ===== */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;position:relative}
.flow .step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 18px;position:relative}
.flow .step .n{width:30px;height:30px;border-radius:50%;background:var(--brand);color:#fff;display:flex;
align-items:center;justify-content:center;font-weight:800;font-size:14px;margin-bottom:12px}
.flow .step b{display:block;font-size:15px;margin-bottom:6px}
.flow .step p{font-size:12.5px;color:var(--muted)}
/* ===== 面包屑 ===== */
.crumb{font-size:13px;color:var(--muted);padding:16px 0}
.crumb a:hover{color:var(--accent)}
.crumb span{margin:0 6px;opacity:.5}
/* ===== 筛选栏 ===== */
.filter-bar{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;margin-bottom:22px}
.f-row{display:flex;gap:14px;padding:9px 0;border-bottom:1px dashed var(--line);align-items:flex-start}
.f-row:last-child{border-bottom:none}
.f-row .fk{font-size:13px;color:var(--muted);width:62px;flex-shrink:0;padding-top:4px;font-weight:600}
.f-row .fv{display:flex;flex-wrap:wrap;gap:8px;flex:1}
.chip{padding:5px 14px;border-radius:99px;font-size:13.5px;background:#F2F5F9;color:var(--ink-2);transition:.18s;border:1px solid transparent}
.chip:hover{background:#F7EFE1}
.chip.on{background:var(--brand);color:#fff}
.chip.on.acc{background:var(--accent)}
.toolbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;gap:12px;flex-wrap:wrap}
.toolbar .count{font-size:14px;color:var(--muted)}
.toolbar .count b{color:var(--accent);font-size:17px}
.sort{display:flex;gap:6px;align-items:center}
.sort button{padding:6px 14px;font-size:13.5px;border-radius:7px;color:var(--ink-2);background:#fff;border:1px solid var(--line)}
.sort button.on{background:var(--brand);color:#fff;border-color:var(--brand)}
.empty{text-align:center;padding:70px 20px;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}
.empty .ic{font-size:44px;margin-bottom:12px;opacity:.35}
.empty p{color:var(--muted);margin-bottom:16px}
/* ===== 课程详情 ===== */
.cd-head{background:linear-gradient(120deg,#084A6B,#0F74A8);color:#fff;padding:30px 0 34px}
.cd-head .tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}
.cd-head .tags span{background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.22);padding:3px 11px;
border-radius:99px;font-size:12px}
.cd-head h1{font-size:27px;font-weight:800;line-height:1.35;margin-bottom:12px}
.cd-head .info{display:flex;gap:22px;flex-wrap:wrap;font-size:13.5px;color:rgba(255,255,255,.82)}
.cd-head .info b{color:var(--gold);font-weight:700}
.cd-layout{display:grid;grid-template-columns:1fr 330px;gap:26px;align-items:start;padding:28px 0 60px}
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;margin-bottom:18px}
.panel h3{font-size:18px;font-weight:800;margin-bottom:16px;display:flex;align-items:center;gap:9px}
.panel h3::before{content:"";width:4px;height:17px;background:var(--accent);border-radius:2px}
.panel .txt{font-size:14.5px;color:var(--ink-2);line-height:1.85}
.panel .txt p{margin-bottom:12px}
.panel .txt ul li{padding-left:18px;position:relative;margin-bottom:8px;font-size:14.5px;color:var(--ink-2)}
.panel .txt ul li::before{content:"";position:absolute;left:4px;top:10px;width:5px;height:5px;border-radius:50%;background:var(--accent)}
/* 章节 */
.stage{border:1px solid var(--line);border-radius:10px;margin-bottom:12px;overflow:hidden}
.stage-h{display:flex;justify-content:space-between;align-items:center;padding:13px 16px;background:#F7F9FC;cursor:pointer}
.stage-h b{font-size:14.5px;display:flex;align-items:center;gap:8px}
.stage-h .sn{background:var(--brand);color:#fff;font-size:11px;padding:2px 8px;border-radius:4px;font-weight:700}
.stage-h .r{font-size:12.5px;color:var(--muted);display:flex;align-items:center;gap:10px}
.stage-h .r i{font-style:normal;transition:.2s;display:inline-block}
.stage.open .stage-h .r i{transform:rotate(180deg)}
.stage-b{display:none;padding:4px 16px 14px}
.stage.open .stage-b{display:block}
.lesson{display:flex;justify-content:space-between;align-items:center;padding:9px 0;border-bottom:1px dashed var(--line);font-size:13.5px}
.lesson:last-child{border-bottom:none}
.lesson .lt{display:flex;align-items:center;gap:9px}
.lesson .no{color:var(--muted);font-size:12.5px;width:22px}
.lesson .free-t{font-size:11px;color:var(--ok);border:1px solid var(--ok);border-radius:4px;padding:0 5px;font-weight:600}
.lesson .lk{font-size:12px;color:var(--brand-2)}
.lesson .lk.lock{color:var(--muted)}
/* 侧边购买卡 */
.buy-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;position:sticky;top:88px;
box-shadow:var(--shadow)}
.buy-card .pbox{padding:20px}
.buy-card .pr{display:flex;align-items:flex-end;gap:8px;margin-bottom:4px}
.buy-card .pr .now{font-size:32px;font-weight:800;color:var(--accent);line-height:1}
.buy-card .pr .old{font-size:14px;color:var(--muted);text-decoration:line-through}
.buy-card .save{font-size:12px;color:var(--ok);background:rgba(19,135,192,.1);display:inline-block;padding:2px 9px;
border-radius:4px;margin-bottom:14px}
.buy-card .dl{display:flex;flex-direction:column;gap:9px;margin-bottom:14px}
.opt{border:1px solid var(--line);border-radius:9px;padding:11px 13px;cursor:pointer;transition:.18s;position:relative}
.opt:hover{border-color:var(--brand-2)}
.opt.on{border-color:var(--accent);background:rgba(19,135,192,.05)}
.opt .ot{display:flex;justify-content:space-between;align-items:center;font-size:14px;font-weight:600}
.opt .op{color:var(--accent);font-weight:800}
.opt .od{font-size:12px;color:var(--muted);margin-top:3px}
.opt .rec{position:absolute;top:-9px;right:10px;background:var(--accent);color:#fff;font-size:10.5px;padding:1px 8px;border-radius:99px}
.coupon{display:flex;gap:8px;margin-bottom:12px}
.coupon .cp{flex:1;border:1px dashed var(--accent);border-radius:8px;padding:6px 10px;font-size:12px;color:var(--accent);
background:rgba(19,135,192,.05);display:flex;justify-content:space-between;align-items:center}
.buy-card .acts{display:flex;gap:9px;margin-bottom:12px}
.buy-card .acts .btn{flex:1}
.buy-card .promise{border-top:1px solid var(--line);padding:14px 20px;background:#FAFBFD}
.buy-card .promise li{font-size:12.5px;color:var(--ink-2);display:flex;gap:7px;margin-bottom:7px}
.buy-card .promise li:last-child{margin-bottom:0}
.buy-card .promise li b{color:var(--brand);font-weight:700}
/* 倒计时 */
.countdown{display:flex;align-items:center;gap:6px;font-size:12.5px;color:#fff;background:linear-gradient(90deg,#0F74A8,#1387c0);
padding:9px 20px;justify-content:center}
.countdown b{background:rgba(0,0,0,.28);padding:1px 6px;border-radius:4px;font-variant-numeric:tabular-nums}
/* ===== 视频弹窗 ===== */
.modal{position:fixed;inset:0;z-index:220;display:none;align-items:center;justify-content:center;
background:rgba(8,18,32,.72);backdrop-filter:blur(3px);padding:20px}
.modal.show{display:flex}
.modal-box{background:#fff;border-radius:12px;overflow:hidden;width:min(880px,100%);box-shadow:var(--shadow-lg);position:relative}
.modal-box video{width:100%;display:block;background:#000;max-height:78vh}
.modal-head{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:#141C26;color:#fff}
.modal-head b{font-size:14.5px}
.modal-head .x{color:rgba(255,255,255,.7);font-size:22px;line-height:1;padding:0 4px}
.modal-head .x:hover{color:#fff}
.modal-body{padding:18px;background:#fff;max-height:70vh;overflow:auto}
.modal-sm{width:min(480px,100%)}
.modal-md{width:min(620px,100%)}
/* 全屏编辑弹窗（资讯内容编辑器使用）：撑满视口，头部/底部固定、主体内部滚动 */
.modal-lg{width:min(1180px,96vw);height:min(94vh,960px);display:flex;flex-direction:column}
.modal-lg .modal-head{flex:none}
.modal-lg .modal-body{flex:1 1 auto;max-height:none;overflow:auto;display:flex;flex-direction:column}
.modal-lg .modal-foot{flex:none}
/* 动画解析弹窗：可拖动 + 8方向缩放（自绘手柄）；遮罩更淡，背后题目可见 */
.modal-box.anim-modal-box{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
width:min(1240px,96vw,150vh);height:88vh;max-width:98vw;max-height:96vh;
min-width:320px;min-height:240px;
display:flex;flex-direction:column;resize:none;overflow:hidden}
#animModal{background:rgba(8,18,32,.18);backdrop-filter:none;padding:0}
.anim-modal-box.anim-dragging{user-select:none}
.anim-drag{cursor:move;flex:0 0 auto}
.anim-body{flex:1 1 auto;padding:0;overflow:hidden;min-height:0}
.anim-modal-box #animFrame{width:100%;height:100%;border:0;display:block;background:#fff;min-height:0}
/* 8 方向缩放手柄：4 边 + 4 角，热区 8px */
.anim-modal-box .anim-rs{position:absolute;z-index:5;touch-action:none}
.anim-rs-n{top:-4px;left:8px;right:8px;height:9px;cursor:ns-resize}
.anim-rs-s{bottom:-4px;left:8px;right:8px;height:9px;cursor:ns-resize}
.anim-rs-e{right:-4px;top:8px;bottom:8px;width:9px;cursor:ew-resize}
.anim-rs-w{left:-4px;top:8px;bottom:8px;width:9px;cursor:ew-resize}
.anim-rs-ne{top:-4px;right:-4px;width:16px;height:16px;cursor:nesw-resize}
.anim-rs-nw{top:-4px;left:-4px;width:16px;height:16px;cursor:nwse-resize}
.anim-rs-se{bottom:-4px;right:-4px;width:16px;height:16px;cursor:nwse-resize}
.anim-rs-sw{bottom:-4px;left:-4px;width:16px;height:16px;cursor:nesw-resize}
/* ===== 试听页：弹窗播放器（1080px / 毛玻璃 / 按课程分组） ===== */
/* 正在播放的卡片：角标 + 描边，与弹窗联动 */
.v-card.playing{outline:2px solid var(--brand-2);outline-offset:2px;border-radius:14px}
.v-card.playing .v-thumb::after{content:"正在播放";position:absolute;left:10px;top:10px;z-index:2;
background:var(--accent);color:#fff;font-size:11px;padding:2px 9px;border-radius:99px}
.tmodal{background:rgba(9,17,30,.55);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.tfm-box{width:min(1080px,96vw);background:#101826;border-radius:14px;overflow:hidden;
box-shadow:var(--shadow-lg);position:relative}
.tfm-head{display:flex;justify-content:space-between;align-items:center;padding:13px 18px;background:#151F2E;color:#fff}
.tfm-head b{font-size:15px}
.tfm-head .x{color:rgba(255,255,255,.7);font-size:22px;line-height:1;padding:0 4px}
.tfm-head .x:hover{color:#fff}
.tfm-main{display:flex;align-items:stretch}
.tfm-left{flex:1;min-width:0;padding:14px 16px}
.tfm-left video{border-radius:10px}
.tfm-now{margin-top:9px;color:#93A6BC;font-size:13px}
.tfm-now b{color:#fff}
.tfm-right{width:340px;flex:none;border-left:1px solid rgba(255,255,255,.08);overflow:auto;max-height:640px;padding:10px}
.tfm-gh{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:10px 6px 6px;font-size:13px;font-weight:700;color:#fff}
.tfm-gh span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.tfm-gh i{font-style:normal;color:#8FA2B8;font-size:11.5px;font-weight:500;flex:none;background:rgba(255,255,255,.08);padding:1px 8px;border-radius:99px}
.tfm-item{display:flex;gap:10px;padding:8px;border-radius:9px;cursor:pointer;transition:.15s;align-items:center}
.tfm-item:hover{background:rgba(255,255,255,.07)}
.tfm-item.on{background:rgba(19,135,192,.25);box-shadow:inset 0 0 0 1px rgba(19,135,192,.6)}
.tfm-ic{width:64px;flex:none;height:40px;border-radius:7px;position:relative;overflow:hidden}
.tfm-ic em{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:#fff;font-size:14px;font-style:normal;background:rgba(0,0,0,.22)}
.tfm-tx{min-width:0;flex:1}
.tfm-t{font-size:12.8px;color:#E8EEF6;font-weight:600;line-height:1.4;
display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.tfm-item.on .tfm-t{color:#fff}
.tfm-s{font-size:11.5px;color:#8296AD;margin-top:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
@media(max-width:900px){
.tfm-main{flex-direction:column}
.tfm-right{width:auto;border-left:0;border-top:1px solid rgba(255,255,255,.08);max-height:240px}
}
/* ===== 学员端播放器「清新风格」主题（仅 account.html 的 playLesson 给 #ctModal 加 .ct-fresh 时生效，试听页不受影响） ===== */
.ct-fresh.tmodal{background:rgba(18,38,36,.45);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.ct-fresh .tfm-box{background:#fff;border:1px solid #E4F1ED;border-radius:18px;overflow:hidden;box-shadow:0 24px 70px rgba(16,80,70,.28)}
.ct-fresh .tfm-head{background:#fff;color:#0E3B34;border-bottom:1px solid #EAF3F0;padding:14px 20px}
.ct-fresh .tfm-head b{font-size:15px;font-weight:700}
.ct-fresh .tfm-head .x{color:#5A726E;font-size:22px;line-height:1;padding:0 4px}
.ct-fresh .tfm-head .x:hover{color:#0E3B34}
.ct-fresh .tfm-left{background:#F5FBF9;padding:16px 18px}
.ct-fresh .tfm-left video{border-radius:14px;background:#0c1a18;box-shadow:0 8px 24px rgba(16,80,70,.12)}
.ct-fresh .tfm-now{color:#5A726E;font-size:13px}
.ct-fresh .tfm-now b{color:#0E3B34}
.ct-fresh .tfm-right{background:#fff;border-left:1px solid #EAF3F0}
.ct-fresh .tfm-gh{color:#0E3B34;font-size:13px}
.ct-fresh .tfm-gh i{background:#E6F5F1;color:#16B8A6}
.ct-fresh .tfm-item:hover{background:#F2FBF9}
.ct-fresh .tfm-item.on{background:#E6F7F3;box-shadow:inset 0 0 0 1px #16B8A6}
.ct-fresh .tfm-t{color:#1F3D38}
.ct-fresh .tfm-s{color:#7C938E}
.ct-fresh .tfm-ic em{background:rgba(16,184,166,.30);color:#fff}
/* 自定义控制条 */
.zg-ctrl{margin-top:12px;background:#fff;border:1px solid #E4F1ED;border-radius:14px;padding:10px 12px;box-shadow:0 8px 22px rgba(16,80,70,.10)}
.zg-prog{position:relative;height:7px;background:#EAF3F0;border-radius:99px;cursor:pointer;margin-bottom:10px;overflow:hidden}
.zg-fill{position:absolute;left:0;top:0;bottom:0;width:0;background:linear-gradient(90deg,#16B8A6,#3BC8C0);border-radius:99px;transition:width .12s linear}
.zg-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.zg-b{height:34px;min-width:34px;padding:0 10px;border:0;border-radius:10px;background:#F2FBF9;color:#0E3B34;font-size:13px;font-weight:600;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;transition:.15s;user-select:none}
.zg-b:hover{background:#DCF3EE}
.zg-b.zg-play{background:#16B8A6;color:#fff;min-width:42px}
.zg-b.zg-play:hover{background:#13A795}
.zg-time{font-size:12.5px;color:#5A726E;font-variant-numeric:tabular-nums;margin-left:2px}
.zg-grow{flex:1}
.zg-rate{font-size:12.5px;color:#5A726E;display:flex;align-items:center;gap:5px;margin-left:2px}
.zg-rate select{border:1px solid #CFE9E2;border-radius:8px;padding:5px 8px;color:#0E3B34;background:#fff;font-size:12.5px;cursor:pointer}
.zg-rate select:focus{outline:none;border-color:#16B8A6}
/* 移动端全屏播放器专属元素：桌面端默认隐藏（避免影响试听/桌面播放器） */
.zg-center{display:none}
.ct-fresh:not(.ct-mobile) .zg-b[data-a="list"]{display:none}
/* ===== 移动端播放器（手机端 account.html 播放器）：视频在顶部 + 控制条叠在视频上 + 下方内联 目录/笔记 ===== */
@media (max-width: 767px) {
.ct-fresh.ct-mobile.tmodal{background:#f5f6f8;padding:0;align-items:stretch;justify-content:flex-start;-webkit-backdrop-filter:none;backdrop-filter:none}
.ct-fresh.ct-mobile.tmodal{display:flex;align-items:stretch;justify-content:flex-start}
.ct-fresh.ct-mobile .tfm-box{position:relative;flex:1 1 auto;min-width:0;min-height:0;width:100%;max-width:none;border:0;border-radius:0;background:#f5f6f8;box-shadow:none;display:flex;flex-direction:column;overflow:hidden;height:100%;max-height:none}
/* 顶部：去掉黑底标题栏，仅保留右上角关闭 ×（浮在视频右上，不占高度、不挡点击） */
.ct-fresh.ct-mobile .tfm-head{position:absolute;top:0;right:0;left:auto;background:transparent;color:#fff;border:0;padding:10px 12px;flex:0 0 auto;z-index:9;display:flex;align-items:center;gap:8px;pointer-events:none}
.ct-fresh.ct-mobile .tfm-head b{display:none}
.ct-fresh.ct-mobile .tfm-head .x{pointer-events:auto;color:#fff;font-size:20px;line-height:1;width:34px;height:34px;border-radius:50%;background:rgba(0,0,0,.45);display:flex;align-items:center;justify-content:center}
/* × 跟随控制条一起显示/隐藏（不常驻） */
.ct-fresh.ct-mobile:not(.ct-show) .tfm-head{opacity:0;visibility:hidden}
/* 主体：上视频，下目录/笔记（白底滚动） */
.ct-fresh.ct-mobile .tfm-main{flex:1 1 0;min-height:0;height:100%;display:grid;grid-template-rows:auto 1fr;overflow:hidden;background:#f5f6f8}
/* 视频固定在顶部，16:9 */
.ct-fresh.ct-mobile .tfm-left{position:relative;grid-row:1;flex:0 0 auto;width:100%;background:#000;padding:0;display:flex;align-items:center;justify-content:center;min-height:0;overflow:hidden;aspect-ratio:16/9}
/* 视频容器必须铺满 .tfm-left，否则视频 width:100% 相对塌缩容器解析成极小尺寸（全屏尤其明显） */
.ct-fresh.ct-mobile .tfm-left #ctmPlayer{position:absolute;inset:0;width:100%;height:100%}
.ct-fresh.ct-mobile .tfm-left video{width:100%;height:100%;max-height:none;object-fit:cover;border-radius:0;box-shadow:none;background:#000}
.ct-fresh.ct-mobile .tfm-now{display:none}
/* 目录/笔记面板：内联在视频下方，白底滚动（不再右侧抽屉） */
.ct-fresh.ct-mobile .tfm-right{position:relative;top:auto;right:auto;bottom:auto;grid-row:2;width:100%;max-width:none;transform:none;min-height:0;background:#f5f6f8;border-left:0;overflow:auto;z-index:1;flex:1 1 auto;max-height:none}
.ct-fresh.ct-mobile.ct-list .tfm-right{transform:none}
/* 移动端“全屏”覆盖层：旋转为横屏（landscape），视频占满整屏（CSS 旋转实现，保证自定义控制条/快进/后退/退出全屏都可用，避免原生全屏吞掉自定义控件） */
.ct-fresh.ct-mobile.ct-fs.tmodal{display:flex;align-items:center;justify-content:center;background:#000}
.ct-fresh.ct-mobile.ct-fs .tfm-box{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%) rotate(90deg);transform-origin:center center;background:#000}
.ct-fresh.ct-mobile.ct-fs .tfm-main{flex:1;height:100%;display:flex;flex-direction:column;overflow:hidden}
.ct-fresh.ct-mobile.ct-fs .tfm-right{display:none}
.ct-fresh.ct-mobile.ct-fs .tfm-left{flex:1 1 auto;min-height:0;aspect-ratio:auto;width:100%;height:100%;background:#000}
.ct-fresh.ct-mobile.ct-fs .tfm-left video{object-fit:contain}
/* 控制条：叠在视频底部，白色胶囊（参考样式） */
.ct-fresh.ct-mobile .zg-ctrl{position:absolute;left:8px;right:8px;bottom:6px;z-index:6;margin:0;border:0;background:transparent;box-shadow:none;border-radius:0;padding:6px 2px;transition:opacity .25s ease,transform .25s ease}
.ct-fresh.ct-mobile .zg-bar{display:flex;align-items:center;gap:8px}
.ct-fresh.ct-mobile .zg-prog{flex:1 1 auto;min-width:0}
.ct-fresh.ct-mobile:not(.ct-show) .zg-ctrl{opacity:0;transform:translateY(12px);pointer-events:none}
.ct-fresh.ct-mobile .zg-row{justify-content:center;gap:6px;flex-wrap:wrap;margin-top:2px}
.ct-fresh.ct-mobile .zg-b{height:28px;min-width:30px;padding:0 8px;background:rgba(0,0,0,.42);color:#fff;font-size:12px;border:0;border-radius:8px}
.ct-fresh.ct-mobile .zg-b:hover{background:#e3e7eb}
.ct-fresh.ct-mobile .zg-b.zg-play{background:#16B8A6;color:#fff;min-width:48px}
.ct-fresh.ct-mobile .zg-b.zg-play:hover{background:#13A795}
.ct-fresh.ct-mobile .zg-time{color:#fff;font-size:12px;text-shadow:0 1px 2px rgba(0,0,0,.6)}
.ct-fresh.ct-mobile .zg-rate{color:#5A726E}
.ct-fresh.ct-mobile .zg-rate select{background:#f0f2f5;color:#0E3B34;border-color:#cfdfdb}
.ct-fresh.ct-mobile .zg-rate select option{color:#222}
/* 倍速弹出层（点击「倍速」按钮弹出，去掉右侧内联框） */
.ct-fresh.ct-mobile .zg-rate-pop{position:absolute;right:2px;bottom:48px;display:none;flex-direction:column;min-width:92px;padding:4px;background:rgba(18,22,26,.94);border-radius:12px;box-shadow:0 6px 20px rgba(0,0,0,.4);z-index:8}
.ct-fresh.ct-mobile .zg-rate-pop[data-show="1"]{display:flex}
.ct-fresh.ct-mobile .zg-rate-pop button{display:block;width:100%;text-align:center;padding:9px 12px;border:0;background:transparent;color:#fff;font-size:13px;cursor:pointer;border-radius:8px;white-space:nowrap}
.ct-fresh.ct-mobile .zg-rate-pop button.on{color:#16B8A6;background:rgba(22,184,166,.18);font-weight:700}
.ct-fresh.ct-mobile .zg-rate-pop button:active{background:rgba(255,255,255,.12)}
.ct-fresh.ct-mobile .zg-prog{height:3px;background:rgba(0,0,0,.12);border-radius:3px;cursor:pointer;position:relative}
.ct-fresh.ct-mobile .zg-fill{height:100%;background:#3b82f6;border-radius:3px;position:relative}
.ct-fresh.ct-mobile .zg-fill::after{content:"";position:absolute;right:-7px;top:50%;transform:translateY(-50%);width:14px;height:14px;border-radius:50%;background:#3b82f6;box-shadow:0 0 0 2px #fff;box-sizing:border-box}
/* 移动端：列表按钮隐藏（目录已内联）；播放/声音按钮隐藏（改由中央大播键 + 全屏按钮承担） */
.ct-fresh.ct-mobile .zg-b[data-a="list"],
.ct-fresh.ct-mobile .zg-b[data-a="play"],
.ct-fresh.ct-mobile .zg-b[data-a="mute"]{display:none}
/* 中心大播放/暂停按钮（点屏幕中央也能播停） */
.ct-fresh.ct-mobile .zg-center{display:flex;position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);z-index:5;width:74px;height:74px;border-radius:50%;border:0;background:rgba(22,184,166,.92);color:#fff;font-size:30px;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 10px 28px rgba(0,0,0,.45);transition:opacity .2s ease}
.ct-fresh.ct-mobile:not(.ct-show) .zg-center{opacity:0;pointer-events:none}
/* 悬浮在视频左中 / 右中的「后退 / 快进」按钮：点一下=±10s，长按=连续 seek（仅移动端） */
.zg-seek{display:none}
.ct-fresh.ct-mobile .zg-seek{display:flex;position:absolute;top:50%;transform:translateY(-50%);z-index:5;width:62px;height:62px;border-radius:50%;border:0;background:rgba(0,0,0,.42);color:#fff;font-size:15px;font-weight:600;line-height:1;align-items:center;justify-content:center;cursor:pointer;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);box-shadow:0 6px 18px rgba(0,0,0,.4);transition:opacity .25s ease,transform .12s ease;user-select:none;-webkit-user-select:none;touch-action:none}
.ct-fresh.ct-mobile .zg-rew{left:16px}
.ct-fresh.ct-mobile .zg-ff{right:16px}
.ct-fresh.ct-mobile .zg-seek:active{transform:translateY(-50%) scale(.92);background:rgba(22,184,166,.85)}
.ct-fresh.ct-mobile:not(.ct-show) .zg-seek{opacity:0;pointer-events:none}
/* 移动端底部条不再重复放 后退/快进（已悬浮在视频上） */
.ct-fresh.ct-mobile .zg-b[data-a="rew"],
.ct-fresh.ct-mobile .zg-b[data-a="ff"]{display:none}
/* 底部栏：当前课时 + 上一节/下一节（移动端不显示，按需求去掉） */
.ct-fresh.ct-mobile .ct-foot{display:none}
.ct-fresh.ct-mobile .ct-foot-cur{flex:1;display:flex;align-items:center;gap:8px;min-width:0;font-size:13px;color:#1a1a1a;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ct-fresh.ct-mobile .ct-foot-ic{color:#16B8A6;flex:0 0 auto}
.ct-fresh.ct-mobile .ct-foot-btns{display:flex;gap:8px;flex:0 0 auto}
.ct-fresh.ct-mobile .ct-foot-btn{background:#f2f4f7;border:0;border-radius:18px;padding:8px 12px;font-size:12px;color:#1a1a1a;white-space:nowrap;cursor:pointer;transition:background .15s}
.ct-fresh.ct-mobile .ct-foot-btn:active{background:#e6e9ed}
}
/* 桌面端默认隐藏播放器底部栏（仅移动端有） */
.ct-foot{display:none}
/* 报考资格测评结果弹窗内的结果区 */
#quizModalBody{border-top:0;margin-top:0;padding-top:0}
#quizModalBody .qzr-h{font-size:15.5px;margin-bottom:10px}
#quizModalBody .qzr-i{font-size:13px;padding:7px 0}
#quizModalBody .qzr-i b{width:64px}
#quizModalBody .qzr-meta{padding-bottom:10px;border-bottom:1px solid var(--line);margin-bottom:8px}
#quizModalBody .qzr-acts{margin-top:16px}
/* ===== 购物车抽屉 ===== */
.drawer{position:fixed;top:0;right:0;bottom:0;width:380px;background:#fff;z-index:210;box-shadow:-8px 0 30px rgba(0,0,0,.14);
transform:translateX(100%);transition:.28s;display:flex;flex-direction:column}
.drawer.show{transform:none}
.drawer-h{display:flex;justify-content:space-between;align-items:center;padding:16px 18px;border-bottom:1px solid var(--line)}
.drawer-h b{font-size:16px}
.drawer-b{flex:1;overflow:auto;padding:14px 18px}
.cart-item{display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line)}
.cart-item .ci-cover{width:76px;height:52px;border-radius:7px;flex-shrink:0;display:flex;align-items:center;justify-content:center;
color:#fff;font-size:11px;font-weight:700;text-align:center;padding:4px}
.cart-item .ci-info{flex:1;min-width:0}
.cart-item .ci-info h5{font-size:13.5px;font-weight:600;line-height:1.4;margin-bottom:3px;
display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cart-item .ci-info .sp{font-size:12px;color:var(--muted)}
.cart-item .ci-pr{font-size:14px;font-weight:800;color:var(--accent);white-space:nowrap}
.cart-del{font-size:12px;color:var(--muted);margin-top:4px}
.cart-del:hover{color:var(--accent)}
.drawer-f{border-top:1px solid var(--line);padding:16px 18px}
.drawer-f .sum{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.drawer-f .sum .t{font-size:13px;color:var(--muted)}
.drawer-f .sum .v{font-size:24px;font-weight:800;color:var(--accent)}
.mask{position:fixed;inset:0;background:rgba(8,18,32,.5);z-index:205;display:none}
.mask.show{display:block}
/* ===== 表单/通用页 ===== */
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-row.three{grid-template-columns:repeat(3,1fr)}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;color:var(--ink-2);margin-bottom:6px;font-weight:600}
.field input,.field select,.field textarea{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:8px;
background:#FAFBFD;outline:none}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand-2);background:#fff}
.pwd-wrap{position:relative}
.pwd-wrap input{padding-right:44px!important}
.pwd-wrap .eye{position:absolute;right:6px;top:50%;transform:translateY(-50%);border:none;background:transparent;
font-size:15px;line-height:1;padding:6px;cursor:pointer;opacity:.55;color:var(--ink)}
.pwd-wrap .eye:hover{opacity:.9}
.reg-tip{font-size:12.5px;line-height:1.6;margin:-8px 0 12px;min-height:0}
.reg-tip.err{color:#C0392B}
.reg-tip.ok{color:#1E8449}
/* 注册短信验证码：输入框 + 获取按钮同行 */
.sms-row{display:flex;gap:8px}
.sms-row input{flex:1;min-width:0;letter-spacing:3px;font-weight:600}
.sms-btn{flex-shrink:0;border:1px solid var(--accent,#F4520D);color:var(--accent,#F4520D);background:#fff;border-radius:9px;padding:0 14px;font-size:13px;font-weight:600;cursor:pointer;white-space:nowrap;transition:.15s}
.sms-btn:hover:not(:disabled){background:rgba(244,82,13,.07)}
.sms-btn:disabled{opacity:.55;cursor:not-allowed}
/* 登录框：密码登录 / 短信验证码登录 切换 */
.auth-sub{margin:0;padding:0}
.auth-switch{margin-top:14px;text-align:center;font-size:12.5px;line-height:1}
.auth-switch a{color:var(--accent,#F4520D);cursor:pointer;font-weight:600}
.auth-switch a:hover{text-decoration:underline}
.field input.err-in{border-color:#C0392B!important;background:#FEF6F6}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
/* FAQ */
.faq{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.faq-i{border-bottom:1px solid var(--line)}
.faq-i:last-child{border-bottom:none}
.faq-q{padding:15px 18px;display:flex;justify-content:space-between;align-items:center;cursor:pointer;font-weight:600;font-size:14.5px}
.faq-q:hover{background:#FAFBFD}
.faq-q i{font-style:normal;color:var(--muted);transition:.2s}
.faq-i.open .faq-q i{transform:rotate(45deg);color:var(--accent)}
.faq-a{display:none;padding:0 18px 16px;font-size:13.5px;color:var(--ink-2);line-height:1.8}
.faq-i.open .faq-a{display:block}
/* FAQ · 首页左右分栏：左边问题列表，右边答案面板（后台「站点设置」可改） */
.faq-lr{display:grid;grid-template-columns:320px 1fr;gap:20px;align-items:start;max-width:980px;margin:0 auto}
.faq-list{display:flex;flex-direction:column;gap:8px;position:sticky;top:18px}
.faq-l{display:flex;gap:10px;align-items:flex-start;text-align:left;border:1px solid var(--line);background:#fff;
border-radius:12px;padding:12px 14px;font-family:inherit;font-size:14px;color:var(--ink-2);cursor:pointer;
line-height:1.55;transition:.18s}
.faq-l span{font-size:11.5px;font-weight:800;color:var(--brand);opacity:.55;flex:none;padding-top:2px}
.faq-l em{font-style:normal;flex:1}
.faq-l:hover{border-color:var(--brand-2);color:var(--brand)}
.faq-l.on{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600;
box-shadow:0 8px 20px rgba(11,58,111,.18)}
.faq-l.on span{color:#fff;opacity:.6}
.faq-pane{min-height:220px}
.faq-p{background:#F7F9FC;border:1px solid var(--line);border-radius:16px;padding:28px 30px;animation:fadeIn .25s ease}
.faq-p h4{font-size:17px;font-weight:800;margin-bottom:12px;line-height:1.5}
.faq-p p{font-size:14px;line-height:1.95;color:var(--ink-2);margin-bottom:18px}
@keyframes fadeIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
@media(max-width:820px){
.faq-lr{grid-template-columns:1fr;gap:14px}
.faq-list{position:static;flex-direction:row;overflow-x:auto;padding-bottom:6px}
.faq-l{flex:0 0 auto;white-space:nowrap;padding:9px 15px;font-size:13px}
.faq-p{padding:20px 18px}
}
/* 首页底部咨询引导条 */
.cta-box{background:linear-gradient(120deg,#0B3A6F,#14508F);border-radius:20px;padding:44px 40px;color:#fff;
display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.cta-box h3{font-size:26px;font-weight:800;margin-bottom:8px;line-height:1.4}
.cta-box p{color:rgba(255,255,255,.78);font-size:15px}
.cta-btns{display:flex;gap:12px;flex-wrap:wrap}
@media(max-width:640px){
.cta-box{padding:30px 22px}
.cta-box h3{font-size:21px}
.cta-btns{width:100%}
.cta-btns .btn{flex:1;text-align:center}
}
/* ===== 订单页 ===== */
.order-layout{display:grid;grid-template-columns:1fr 340px;gap:24px;align-items:start}
.pay-list{display:flex;flex-direction:column;gap:10px}
.pay-opt{border:1px solid var(--line);border-radius:9px;padding:13px 15px;display:flex;align-items:center;gap:11px;cursor:pointer}
.pay-opt.on{border-color:var(--accent);background:rgba(19,135,192,.05)}
.pay-opt .pi{width:34px;height:34px;border-radius:8px;display:flex;align-items:center;justify-content:center;
font-size:12px;font-weight:700;color:#fff}
.pay-opt .pt{flex:1}
.pay-opt .pt b{display:block;font-size:14px}
.pay-opt .pt span{font-size:12px;color:var(--muted)}
.radio{width:17px;height:17px;border-radius:50%;border:1.5px solid var(--line);flex-shrink:0}
.pay-opt.on .radio{border-color:var(--accent);background:var(--accent);position:relative}
.pay-opt.on .radio::after{content:"";position:absolute;inset:3px;border-radius:50%;background:#fff}
.ok-page{text-align:center;padding:80px 20px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg)}
.ok-page .ic{width:70px;height:70px;border-radius:50%;background:var(--ok);color:#fff;font-size:34px;margin:0 auto 18px;
display:flex;align-items:center;justify-content:center}
/* ===== 页脚 ===== */
footer.site{background:#063A52;color:rgba(255,255,255,.66);margin-top:20px}
.foot-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1.2fr;gap:30px;padding:44px 0 30px}
.foot-top h4{color:#fff;font-size:15px;margin-bottom:14px;font-weight:700}
.foot-top li{margin-bottom:9px;font-size:13.5px}
.foot-top li a:hover{color:#fff}
.foot-brand .mark{width:44px;height:44px;border-radius:11px;background:linear-gradient(135deg,var(--brand),var(--brand-2));
display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:20px;margin-bottom:14px}
.foot-brand p{font-size:13px;line-height:1.8;margin-bottom:14px}
.foot-contact{font-size:13.5px;line-height:2}
.foot-contact b{color:#fff;font-size:17px;font-weight:800}
.foot-bottom{border-top:1px solid rgba(255,255,255,.1);padding:16px 0;font-size:12.5px;
display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
/* 页脚精简版：去掉分类/服务/关注列后，左侧品牌区重新排版为「介绍 + 联系方式」两栏 */
.foot-top.foot-solo{grid-template-columns:1.6fr 1fr;gap:60px;align-items:start}
.foot-solo .foot-brand p{max-width:560px}
.foot-solo .foot-contact-col{padding-top:6px}
.foot-wechat{margin-top:12px;font-size:13px;line-height:1.8}
@media(max-width:1100px){
.foot-top.foot-solo{grid-template-columns:1.4fr 1fr;gap:36px}
}
@media(max-width:680px){
.foot-top.foot-solo{grid-template-columns:1fr;gap:18px;padding:32px 0 24px}
}
/* ===== 浮动工具 ===== */
.float-tools{position:fixed;right:16px;bottom:24px;z-index:120;display:flex;flex-direction:column;gap:12px}
.ft-btn{width:62px;height:62px;border-radius:17px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);
display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--ink-2);gap:3px;
font-family:inherit;cursor:pointer;transition:.2s}
.ft-btn .ft-ic{font-size:26px;line-height:1;display:block}
.ft-btn em{font-style:normal;font-size:11.5px;letter-spacing:.5px}
.ft-btn:hover{background:var(--brand);color:#fff;border-color:var(--brand);transform:translateY(-2px);
box-shadow:0 12px 26px rgba(15,40,70,.2)}
.ft-btn.top{opacity:0;pointer-events:none}
.ft-btn.top.show{opacity:1;pointer-events:auto}
@media(max-width:640px){
.float-tools{right:10px;bottom:16px;gap:9px}
.ft-btn{width:54px;height:54px;border-radius:15px}
.ft-btn .ft-ic{font-size:22px}
.ft-btn em{font-size:10.5px}
}
/* 提示条 */
.toast{position:fixed;top:80px;left:50%;transform:translateX(-50%) translateY(-16px);background:var(--ink);color:#fff;
padding:11px 22px;border-radius:10px;font-size:14px;z-index:300;opacity:0;transition:.25s;box-shadow:var(--shadow-lg);pointer-events:none}
.toast.show{opacity:1;transform:translateX(-50%)}
/* 分页 */
.pager{display:flex;justify-content:center;gap:8px;margin-top:28px}
.pager button{min-width:36px;height:36px;border:1px solid var(--line);background:#fff;border-radius:8px;font-size:14px}
.pager button.on{background:var(--brand);color:#fff;border-color:var(--brand)}
.pager button:disabled{opacity:.4;cursor:not-allowed}
/* 渐变封面变体 */
.gv1{background:linear-gradient(135deg,#0A5880,#1387c0)}
.gv2{background:linear-gradient(135deg,#0F4C81,#2E86C1)}
.gv3{background:linear-gradient(135deg,#123E6B,#3A7CA5)}
.gv4{background:linear-gradient(135deg,#143D5C,#2C6E8F)}
.gv5{background:linear-gradient(135deg,#0E3A63,#1B7A9E)}
.gv6{background:linear-gradient(135deg,#1A3E63,#4A7FA5)}
.gv7{background:linear-gradient(135deg,#0A5880,#5A6ACF)}
.gv8{background:linear-gradient(135deg,#10365C,#2A9D8F)}
.gvo{background:linear-gradient(135deg,#0F74A8,#1387c0)}
.gvg{background:linear-gradient(135deg,#0E5C7A,#2E9BC0)}
.dots{position:absolute;inset:0;opacity:.14;
background-image:radial-gradient(rgba(255,255,255,.9) 1px,transparent 1px);background-size:16px 16px}
/* ===== 响应式 ===== */
@media(max-width:1100px){
.courses-grid{grid-template-columns:repeat(3,1fr)}
.trial-grid{grid-template-columns:repeat(3,1fr)}
.feat-grid{grid-template-columns:repeat(3,1fr)}
.tea-grid{grid-template-columns:repeat(3,1fr)}
.quick-grid{grid-template-columns:repeat(4,1fr)}
.foot-top{grid-template-columns:1fr 1fr 1fr}
}
@media(max-width:900px){
.hero .wrap{grid-template-columns:1fr;padding-top:32px;padding-bottom:32px}
.hero h1{font-size:31px}
.hero-card{display:none}
.cd-layout{grid-template-columns:1fr}
.buy-card{position:static}
.order-layout{grid-template-columns:1fr}
.tier-grid{grid-template-columns:1fr}
.menu{display:none}
.search{display:none}
.menu-toggle{display:flex}
.nav-right .btn{display:none}
}
@media(max-width:680px){
.courses-grid,.courses-grid.c3,.trial-grid,.tea-grid,.say-grid,.flow,.grid-2,.grid-3{grid-template-columns:1fr}
.courses-grid{grid-template-columns:repeat(2,1fr)}
.quick-grid{grid-template-columns:repeat(3,1fr)}
.feat-grid{grid-template-columns:repeat(2,1fr)}
.stat-row{grid-template-columns:repeat(2,1fr)}
.foot-top{grid-template-columns:1fr 1fr}
.form-row,.form-row.three{grid-template-columns:1fr}
.sec{padding:36px 0}
.t-head h2{font-size:23px}
.hero h1{font-size:26px}
.hero-stats{gap:20px}
.drawer{width:100%}
.f-row{flex-direction:column;gap:6px}
.f-row .fk{width:auto}
}
/* ================= 商品详情页（淘宝式） ================= */
.pd-wrap{padding:8px 0 40px}
.pd-top{display:grid;grid-template-columns:430px 1fr;gap:26px;background:#fff;border:1px solid var(--line);
border-radius:var(--radius);padding:20px}
/* 左：相册 */
.pd-main{aspect-ratio:1/1;border-radius:12px;position:relative;overflow:hidden;display:flex;
align-items:center;justify-content:center;color:#fff}
.pd-main .dots{position:absolute;inset:0;opacity:.14;background-image:radial-gradient(rgba(255,255,255,.9) 1px,transparent 1px);background-size:16px 16px}
.pd-main .cap{position:relative;z-index:2;text-align:center;padding:0 24px}
.pd-main .cap .pm-t{font-size:13px;opacity:.9;letter-spacing:2px;margin-bottom:8px}
.pd-main .cap .pm-b{font-size:34px;font-weight:800;letter-spacing:-1px;text-shadow:0 2px 10px rgba(0,0,0,.25);line-height:1.25}
.pd-main .cap .pm-s{font-size:13.5px;opacity:.92;margin-top:10px}
.pd-main .cap .pm-tag{display:inline-block;margin-top:14px;background:rgba(255,255,255,.2);border:1px solid rgba(255,255,255,.3);
padding:5px 14px;border-radius:99px;font-size:12.5px}
.pd-main video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:none;background:#000}
.pd-main.playing video{display:block}
.pd-main.playing .cap,.pd-main.playing .dots{display:none}
.pd-main .pmbadge{position:absolute;top:12px;left:12px;z-index:3;background:rgba(0,0,0,.42);backdrop-filter:blur(4px);
font-size:11.5px;padding:3px 10px;border-radius:99px}
.pd-thumbs{display:flex;gap:8px;margin-top:10px}
.pd-thumb{flex:1;height:62px;border-radius:8px;border:2px solid transparent;cursor:pointer;position:relative;
overflow:hidden;display:flex;align-items:center;justify-content:center;color:#fff;font-size:12px;transition:.18s}
.pd-thumb:hover{opacity:.9}
.pd-thumb.on{border-color:var(--accent)}
.pd-thumb .tp{position:absolute;left:0;right:0;bottom:0;background:rgba(0,0,0,.45);font-size:10.5px;text-align:center;padding:2px}
.pd-gal-meta{display:flex;justify-content:space-between;align-items:center;margin-top:12px;font-size:12.5px;color:var(--muted)}
.pd-gal-meta button{font-size:12.5px;color:var(--ink-2);display:flex;align-items:center;gap:4px}
.pd-gal-meta button:hover{color:var(--accent)}
/* 右：信息 */
.pd-tagline{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:10px}
.pd-tagline span{font-size:12px;padding:2px 9px;border-radius:4px;background:#F2F5F9;color:var(--ink-2)}
.pd-tagline span.hot{background:rgba(19,135,192,.1);color:var(--accent);font-weight:700}
.pd-title{font-size:22px;font-weight:800;line-height:1.4;letter-spacing:-.3px;margin-bottom:6px}
.pd-sub{font-size:13.5px;color:var(--muted);line-height:1.7;margin-bottom:14px}
.pd-promo{display:flex;align-items:center;gap:10px;background:linear-gradient(90deg,#FDF6E8,#FDF8EE);
border:1px solid #F3D9B8;border-radius:8px;padding:9px 14px;margin-bottom:14px;font-size:13px;color:#0F74A8;flex-wrap:wrap}
.pd-promo b{background:rgba(0,0,0,.06);padding:1px 6px;border-radius:4px;font-variant-numeric:tabular-nums}
.pd-pricebox{background:#FAFBFD;border:1px solid var(--line);border-radius:10px;padding:14px 16px;margin-bottom:16px}
.pd-pricebox .row1{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}
.pd-pricebox .lab{font-size:12.5px;color:var(--muted);width:52px;flex-shrink:0}
.pd-pricebox .now{font-size:32px;font-weight:800;color:var(--accent);line-height:1}
.pd-pricebox .old{font-size:14px;color:var(--muted);text-decoration:line-through}
.pd-pricebox .off{font-size:12px;background:var(--accent);color:#fff;padding:2px 8px;border-radius:4px;font-weight:700}
.pd-pricebox .sold{font-size:12.5px;color:var(--muted);margin-top:10px}
/* 优惠券：价格下方「领取优惠券」，点击即领、券码留在学员本机 */
.pd-coupon{margin-top:12px;border-top:1px dashed var(--line);padding-top:12px}
.pd-coupon .cp-lab{font-size:12.5px;color:var(--muted);width:52px;flex-shrink:0;display:inline-block}
.pd-coupon .cp-list{display:flex;flex-direction:column;gap:8px;margin-top:8px}
.pd-coupon .cp-item{display:flex;align-items:center;gap:12px;padding:9px 12px;border-radius:9px;
background:linear-gradient(90deg,#FFF6F0,#FFFDFB);border:1px solid #F6D9C4}
.pd-coupon .cp-item.got{background:#F7F9FC;border-color:var(--line);opacity:.9}
.pd-coupon .cp-amt{color:var(--accent);display:flex;align-items:baseline;gap:2px;flex:none;min-width:72px}
.pd-coupon .cp-amt i{font-style:normal;font-size:13px;font-weight:700}
.pd-coupon .cp-amt b{font-size:24px;font-weight:800;line-height:1}
.pd-coupon .cp-tx{flex:1;min-width:0}
.pd-coupon .cp-tx b{display:block;font-size:13.5px;font-weight:700;color:var(--ink)}
.pd-coupon .cp-tx span{display:block;font-size:11.5px;color:var(--muted);margin-top:2px}
.pd-coupon .cp-btn{flex:none;border:none;border-radius:20px;background:var(--accent);color:#fff;
font-family:inherit;font-size:13px;font-weight:700;padding:8px 18px;cursor:pointer;transition:.18s}
.pd-coupon .cp-btn:hover{background:#D6470B;transform:translateY(-1px)}
.pd-coupon .cp-got{flex:none;text-align:right;font-size:12.5px;color:var(--ok);font-weight:700}
.pd-coupon .cp-got.gray{color:var(--muted)}
.pd-coupon .cp-code{font-size:11.5px;color:var(--muted);font-weight:400;margin-top:2px}
.pd-coupon .cp-toggle{flex:none;font-size:12px;color:var(--muted);cursor:pointer;white-space:nowrap}
.pd-coupon .cp-toggle:hover{color:var(--accent)}
.pd-coupon .cp-toggle.use{color:var(--brand)}
.pd-coupon .cp-item.on{border-color:var(--accent)}
/* 价格行后面的「券后价」标记 */
.pd-pricebox .cp-tag{font-size:12px;background:var(--accent);color:#fff;padding:3px 9px;border-radius:4px;font-weight:700}
/* 试听卡片：整张可点 */
.ct-card{cursor:pointer}
.pd-coupon .cp-tip{font-size:11.5px;color:var(--muted);margin-top:8px}
@media(max-width:640px){
.pd-coupon .cp-item{flex-wrap:wrap}
.pd-coupon .cp-btn{width:100%;text-align:center}
}
.pd-sku{margin-bottom:16px}
.pd-sku .sk{font-size:13px;color:var(--muted);margin-bottom:8px}
.pd-sku .opts{display:flex;flex-wrap:wrap;gap:9px}
.pd-sku .opt{min-width:150px}
.pd-attrs{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:16px}
.pd-attrs div{font-size:13px;color:var(--ink-2)}
.pd-attrs div b{color:var(--ink);font-weight:700}
.pd-serve{display:flex;gap:14px;flex-wrap:wrap;font-size:12.5px;color:var(--ink-2);margin-bottom:16px;
border-top:1px dashed var(--line);border-bottom:1px dashed var(--line);padding:12px 0}
.pd-serve span{display:flex;align-items:center;gap:4px}
.pd-btns{display:flex;gap:12px}
.pd-btns .btn{flex:1;padding:14px 20px;font-size:16px}
.pd-btns .btn-cart{background:#FDF6E8;color:var(--accent);border:1px solid var(--accent)}
.pd-btns .btn-cart:hover{background:var(--accent);color:#fff}
/* Tab */
.pd-tabs{display:flex;gap:2px;background:#fff;border:1px solid var(--line);border-radius:var(--radius) var(--radius) 0 0;
margin-top:20px;padding:0 12px;position:sticky;top:70px;z-index:60}
.pd-tabs button{padding:14px 18px;font-size:15px;font-weight:600;color:var(--ink-2);border-bottom:2px solid transparent}
.pd-tabs button.on{color:var(--accent);border-color:var(--accent)}
.pd-panels{background:#fff;border:1px solid var(--line);border-top:none;border-radius:0 0 var(--radius) var(--radius);padding:26px}
.pd-panel{display:none}
.pd-panel.on{display:block}
/* 书籍详情页：后台「书籍详情 / 书籍试读」里的图文正文 */
.bd-body{font-size:16px;color:var(--ink-2);line-height:1.9}
.bd-body img{max-width:100%;height:auto;display:block;margin:14px auto;border-radius:10px}
.bd-body h3,.bd-body h4{font-size:17px;font-weight:800;color:var(--ink);margin:20px 0 8px}
.bd-body p{margin-bottom:12px}
.bd-body ul{margin:0 0 14px}
.bd-body ul li{padding-left:18px;position:relative;margin-bottom:8px}
.bd-body ul li::before{content:"";position:absolute;left:4px;top:11px;width:5px;height:5px;border-radius:50%;background:var(--accent)}
.bd-body table{max-width:100%;border-collapse:collapse;font-size:13.5px;margin:12px 0}
.bd-body td,.bd-body th{border:1px solid var(--line);padding:8px 12px}
/* 书籍试读：PDF 按页转成的图片，逐页卡片展示，点击可放大 */
.pdf-trial-sep{border:none;border-top:1px dashed var(--line);margin:22px 0 4px}
.pdf-trial-title{font-size:15.5px;font-weight:800;color:var(--ink);margin:0 0 12px}
.pdf-trial-page{margin:14px 0;text-align:center}
.pdf-trial-page img{display:block;max-width:100%;height:auto;margin:0 auto;border-radius:8px;
box-shadow:0 2px 10px rgba(20,40,70,.08);cursor:zoom-in;background:#fff;transition:filter .15s}
.pdf-trial-page img:hover{filter:brightness(.97)}
.pdf-trial-pno{font-size:12.5px;color:var(--muted);margin-top:6px}
/* 试读图片点击放大浮层 */
.trial-zoom{position:fixed;inset:0;z-index:9999;background:rgba(15,23,32,.92);display:none;
align-items:center;justify-content:center;padding:24px;cursor:zoom-out;overflow:auto}
.trial-zoom.show{display:flex}
.trial-zoom img{max-width:96vw;max-height:94vh;box-shadow:0 8px 40px rgba(0,0,0,.5);border-radius:6px}
.trial-zoom .tz-hint{position:absolute;top:14px;left:0;right:0;text-align:center;color:rgba(255,255,255,.7);font-size:13px}
/* 参数表 */
.spec-table{width:100%;border-collapse:collapse;font-size:13.5px;margin-bottom:20px}
.spec-table td{border:1px solid var(--line);padding:10px 14px;color:var(--ink-2)}
.spec-table td:nth-child(odd){background:#FAFBFD;color:var(--muted);width:130px}
/* 评价 */
.rating-box{display:flex;gap:30px;align-items:center;padding:20px;background:#FAFBFD;border-radius:12px;margin-bottom:22px}
.rating-box .score{text-align:center;min-width:110px}
.rating-box .score b{font-size:40px;font-weight:800;color:var(--accent);line-height:1}
.rating-box .score .st{color:var(--accent);font-size:15px;margin:6px 0 4px}
.rating-box .bars{flex:1;max-width:420px}
.rating-box .bars .b{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--muted);margin-bottom:6px}
.rating-box .bars .b .track{flex:1;height:8px;background:#E9EDF3;border-radius:99px;overflow:hidden}
.rating-box .bars .b .track i{display:block;height:100%;background:var(--accent);border-radius:99px}
.stars{color:#F4520D;font-size:13px;letter-spacing:1px}
.say-item{display:flex;gap:14px;padding:18px 0;border-bottom:1px dashed var(--line)}
.say-item:last-child{border-bottom:none}
.say-item .av{width:42px;height:42px;border-radius:50%;color:#fff;display:flex;align-items:center;justify-content:center;
font-weight:700;flex-shrink:0}
.say-item .sc{flex:1}
.say-item .sc .h{display:flex;align-items:center;gap:10px;margin-bottom:6px;flex-wrap:wrap}
.say-item .sc .h b{font-size:14px}
.say-item .sc .h span{font-size:12px;color:var(--muted)}
.say-item .sc p{font-size:14px;color:var(--ink-2);line-height:1.75}
.say-item .sc .from{font-size:12px;color:var(--brand-2);margin-top:8px}
/* 侧栏店铺卡 */
.shop-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;margin-bottom:16px}
.shop-card .sh{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.shop-card .sh .mk{width:44px;height:44px;border-radius:11px;background:linear-gradient(135deg,var(--brand),var(--brand-2));
color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center}
.shop-card .sh b{font-size:15px}
.shop-card .sh span{display:block;font-size:11.5px;color:var(--muted)}
.shop-score{display:flex;gap:16px;font-size:12px;color:var(--muted);margin-bottom:12px}
.shop-score b{display:block;font-size:15px;color:var(--accent)}
.shop-card .btn{width:100%;margin-bottom:8px}
.side-list{border:1px solid var(--line);border-radius:var(--radius);background:#fff;overflow:hidden;margin-bottom:16px}
.side-list h4{font-size:14px;padding:13px 16px;border-bottom:1px solid var(--line);font-weight:700}
.side-item{display:flex;gap:10px;padding:12px 16px;border-bottom:1px dashed var(--line);align-items:center}
.side-item:last-child{border-bottom:none}
.side-item .ci{width:60px;height:42px;border-radius:6px;flex-shrink:0;display:flex;align-items:center;justify-content:center;
color:#fff;font-size:11px;font-weight:700;text-align:center;padding:3px}
.side-item .cn{flex:1;min-width:0}
.side-item .cn h5{font-size:13px;font-weight:600;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;
-webkit-box-orient:vertical;overflow:hidden}
.side-item .cn .p{font-size:13px;color:var(--accent);font-weight:700;margin-top:3px}
@media(max-width:1100px){
.pd-top{grid-template-columns:360px 1fr}
}
@media(max-width:820px){
.pd-top{grid-template-columns:1fr;gap:16px}
.pd-attrs{grid-template-columns:1fr}
.pd-tabs{overflow:auto}
.pd-tabs button{padding:12px 12px;font-size:14px;white-space:nowrap}
.rating-box{flex-direction:column;align-items:stretch;gap:14px}
}
/* ================= 三色主题：主色 #1387c0 / 搭配 #FAEDD1 / 强调 #F4520D ================= */
:root{--cream:#FAEDD1;--cream-2:#FDF8EE}
.sec-cream{background:var(--cream)}
.hero{background:linear-gradient(120deg,#084A6B 0%,#1387c0 55%,#2E9FD6 100%)}
.hero::after{background:radial-gradient(900px 400px at 78% 20%,rgba(250,237,209,.22),transparent 60%),
radial-gradient(600px 300px at 10% 90%,rgba(19,135,192,.4),transparent 60%)}
.tier.b{background:linear-gradient(135deg,#D4450A,#F4753A)}
.stat-band{background:linear-gradient(120deg,#084A6B,#1387c0)}
.hero-card input,.hero-card select,.field input,.field select,.field textarea,
.toolbar-adm input[type=text],.toolbar-adm select{background:var(--cream-2)}
.filter-bar,.pd-pricebox,.stage-h,.rating-box,.buy-card .promise,.spec-table td:nth-child(odd),
.card > .promise{background:var(--cream-2)}
.pd-promo{background:linear-gradient(90deg,#FBE9D2,#FDF8EE);border-color:#EFD3A8}
.pd-tagline span,.mini{background:var(--cream)}
.pd-btns .btn-cart{background:#FFF0E6}
.gvo{background:linear-gradient(135deg,#D4450A,#F4753A)}
.gvg{background:linear-gradient(135deg,#0A5880,#2E9FD6)}
.side-list h4,.shop-card .sh .mk{background:var(--cream)}
.feat .ic{background:linear-gradient(135deg,#FBF1E0,#F5E3C6)}
.q-item .ic{background:linear-gradient(135deg,#FBF1E0,#F5E3C6);color:var(--brand)}
.drop .grid a:hover{background:rgba(19,135,192,.09)}
.search,.chip{background:var(--cream-2)}
.chip:hover{background:var(--cream)}
.f-row{border-bottom-color:var(--line)}
/* ================= 赠送资料联动（课程页） ================= */
.pd-gift{display:none;margin-top:14px;border:1px solid #EFD3A8;background:linear-gradient(180deg,#FDF8EE,#FAEDD1);border-radius:10px;padding:12px 14px}
.pd-gift .gift-h{font-size:13.5px;font-weight:800;color:#B85C10;margin-bottom:8px}
.pd-gift .gift-l{display:grid;grid-template-columns:1fr 1fr;gap:6px 14px}
.pd-gift .gift-l li{font-size:13px;color:var(--ink-2);padding-left:16px;position:relative;list-style:none}
.pd-gift .gift-l li::before{content:"✓";position:absolute;left:0;color:var(--accent);font-weight:800}
/* 赠送资料的类型小标签：纸质 / 电子 / 服务 */
.gift-tag{display:inline-block;font-size:10.5px;line-height:1;padding:3px 6px;border-radius:4px;margin-left:6px;
background:rgba(244,82,13,.1);color:#C2540A;vertical-align:1px;font-weight:700}
.gift-tag.el{background:rgba(19,135,192,.12);color:#0A6E9C}
.gift-tag.sv{background:#EEF1F6;color:#68788C}
@media(max-width:680px){.pd-gift .gift-l{grid-template-columns:1fr}}
.mat-dl{display:inline-flex;align-items:center;gap:5px;margin-top:7px;font-size:12.5px;color:var(--brand);
border:1px solid var(--brand);border-radius:6px;padding:4px 10px;text-decoration:none;background:rgba(19,135,192,.06)}
.mat-dl:hover{background:var(--brand);color:#fff}
/* ================= 首屏 · 报考条件自测 ================= */
.hero .wrap{grid-template-columns:1fr 420px}
.hero-card.quiz .qz-row{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-bottom:9px}
.hero-card.quiz .qz-f{min-width:0}
.hero-card.quiz label{display:block;font-size:12px;color:var(--muted);margin-bottom:4px}
.hero-card.quiz input[type=text],.hero-card.quiz select{
width:100%;padding:9px 6px 9px 10px;border:1px solid var(--line);border-radius:8px;
font-size:13.5px;background:var(--cream-2);color:var(--ink);outline:none}
.hero-card.quiz select:focus{border-color:var(--brand-2)}
.hero-card.quiz .btn-lg{padding:12px 20px;font-size:15.5px}
.qz-hint{font-size:11.5px;color:var(--muted);line-height:1.65;margin:2px 0 10px;
background:var(--cream-2);border-radius:7px;padding:7px 9px}
.qz-hint b{color:var(--brand);font-weight:700}
.qz-hint span{display:block;margin-top:2px}
.qz-hint i{display:block;font-style:normal;margin-top:3px;color:#B85C10}
.hero-card.quiz select optgroup{color:var(--muted);font-size:11.5px;font-style:normal}
.hero-card.quiz select optgroup option{color:var(--ink);font-size:12.5px}
.qz-check{font-size:12.5px;color:var(--ink-2);margin-bottom:10px;display:flex;align-items:center;gap:6px}
.qz-check input{width:auto}
.qz-result{margin-top:12px;border-top:1px dashed var(--line);padding-top:12px}
.qzr-h{font-size:13.5px;font-weight:800;color:var(--brand);margin-bottom:8px}
.qzr-i{display:flex;gap:8px;align-items:flex-start;font-size:12.5px;line-height:1.6;padding:6px 0}
.qzr-i b{flex:none;width:60px;font-weight:800;color:var(--ink)}
.qzr-i span{color:var(--ink-2)}
.qzr-i.ok span{color:#1E8A4C}
.qzr-i.warn span{color:#B85C10}
.qzr-i.no span{color:#C0392B}
.qzr-i.gray span{color:var(--muted)}
.qzr-sub{font-size:11.5px;color:var(--muted);line-height:1.6;padding:2px 0 2px 68px}
.qzr-meta{font-size:11.5px;color:var(--muted);line-height:1.6;padding:0 0 8px}
.qzr-acts{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.qzr-dis{font-size:11px;color:var(--muted);line-height:1.6;margin-top:10px}
/* ================= 首页免费试听（左播放器 / 右试听列表） ================= */
.tf-main{display:grid;grid-template-columns:1.15fr 1fr;gap:22px;align-items:start;margin-top:6px}
.tf-left{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px}
.tf-filters{margin-bottom:12px}
.tf-filters .f-row:last-child{border-bottom:none;padding-bottom:0}
.tf-stage{margin-top:6px;position:relative}
#tfPlayer{position:relative}
#tfPlayer video{width:100%;border-radius:12px;background:#000;aspect-ratio:16/9;display:block}
/* 该专业暂无试听时的占位：保持播放器区域常驻，不塌陷成空白 */
.tf-ph{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;
aspect-ratio:16/9;border-radius:12px;background:#F5F8FC;border:1px dashed var(--line);
color:var(--muted);text-align:center;padding:16px}
.tf-ph b{font-size:14px;color:var(--ink-2);font-weight:700}
.tf-ph span{font-size:12.5px;line-height:1.6}
.tf-now{font-size:13.5px;color:var(--muted);margin-top:10px;line-height:1.6;min-height:20px}
.tf-now b{color:var(--ink)}
.tf-right{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
display:flex;flex-direction:column}
.tf-rl-head{display:flex;justify-content:space-between;align-items:center;padding:14px 18px;
border-bottom:1px solid var(--line)}
.tf-rl-head b{font-size:15px;font-weight:800}
.tf-rl-head span{font-size:12.5px;color:var(--muted)}
/* 首页试听 / 课程页免费试听：视频分类筛选标签 */
.tf-cats,.trial-cats{display:flex;flex-wrap:wrap;gap:8px;padding:12px 18px 4px}
.trial-cats{padding:0 0 4px}
.tf-cats .chip,.trial-cats .chip{font-size:13px;padding:5px 13px}
.vcat-tag{display:inline-block;padding:2px 9px;border-radius:99px;background:#EEF3FA;color:var(--brand);font-size:12px;font-weight:600;white-space:nowrap}
/* 列表区可滚动：高度由 tfFit() 锁定为与左侧白色卡片等高 */
.tf-list{flex:1;min-height:0;overflow-y:auto;padding:8px 8px 12px}
.tf-grp{font-size:12px;font-weight:700;color:var(--brand);padding:12px 10px 6px;letter-spacing:.3px}
.tf-row{display:flex;align-items:center;gap:10px;padding:11px 12px;border-radius:10px;cursor:pointer;
transition:.15s}
.tf-row:hover{background:#F5F8FC}
.tf-row.on{background:linear-gradient(90deg,#FFF4E9,#FFF);box-shadow:inset 3px 0 0 var(--accent)}
.tf-dot{width:8px;height:8px;border-radius:50%;background:#cfd8e3;flex-shrink:0;transition:.15s}
.tf-row.on .tf-dot{background:var(--accent);box-shadow:0 0 0 3px rgba(244,82,13,.15)}
.tf-rt{flex:1;min-width:0;font-size:13.5px;font-weight:600;color:var(--ink-2);line-height:1.4;
overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.tf-row.on .tf-rt{color:var(--accent)}
.tf-rm{font-size:11.5px;color:var(--muted);flex-shrink:0;text-align:right}
@media(max-width:980px){
.hero .wrap{grid-template-columns:1fr}
.tf-main{grid-template-columns:1fr}
.tf-list{max-height:440px}
}
@media(max-width:560px){
.hero-card.quiz .qz-row{grid-template-columns:1fr}
.qzr-sub{padding-left:0}
}
/* ===== 书籍商城 ===== */
.book-promo{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:22px}
.bp-i{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px}
.bp-i b{display:block;font-size:14px;font-weight:800;margin-bottom:4px}
.bp-i span{display:block;font-size:12.5px;color:var(--muted);line-height:1.6}
.book-card .cc-cover .label b{font-size:16px}
.book-card .cc-tea{min-height:44px;font-size:12.5px;color:var(--ink-2)}
.cc-foot .bk-btns{display:flex;gap:6px;flex-wrap:wrap}
/* 书籍卡片：按钮放不下时整组换行，别和价格挤在一行 */
.book-card .cc-foot{flex-wrap:wrap}
.book-card .cc-foot .bk-btns{flex-wrap:nowrap;justify-content:flex-end}
.empty-btns{display:flex;gap:8px;justify-content:center;flex-wrap:wrap}
@media(max-width:760px){.book-promo{grid-template-columns:1fr}}
/* ===== 后台：站点设置里的图片（Logo / 二维码） ===== */
.set-img-row{display:flex;gap:14px;align-items:flex-start;flex-wrap:wrap}
.set-img-row .pv{width:96px;height:96px;flex:none;border:1px dashed var(--line);border-radius:10px;background:#FAFBFD;
display:flex;align-items:center;justify-content:center;overflow:hidden}
.set-img-row .pv img{max-width:100%;max-height:100%;object-fit:contain}
.set-img-row .pv span{font-size:12px;color:var(--muted)}
.set-img-row .pv.qr{width:120px;height:120px}
.set-img-row .ops{flex:1 1 260px;display:flex;flex-direction:column;gap:8px}
.set-img-row .ops input[type=text]{width:100%}
/* ===== 前台：客服二维码弹窗 ===== */
#qrModalBody{text-align:center;padding:8px 4px 4px}
#qrModalBody .qr-wrap{width:200px;height:200px;margin:0 auto 14px;border:1px solid var(--line);
border-radius:12px;display:flex;align-items:center;justify-content:center;overflow:hidden;background:#fff}
#qrModalBody .qr-wrap img{max-width:100%;max-height:100%}
#qrModalBody .qr-empty{font-size:13px;color:var(--muted);line-height:1.8;padding:24px 10px}
#qrModalBody .qr-tip{font-size:14px;font-weight:700;color:var(--accent);line-height:1.7;margin-bottom:6px}
#qrModalBody .qr-sub{font-size:12.5px;color:var(--muted);line-height:1.7}
/* ---------- 课程详情：主图相册（后台「主图设置」上传图片模式） ---------- */
.pd-main .gimg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;cursor:zoom-in}
.pd-thumb.img{padding:0;overflow:hidden;background:#F3F6FA;aspect-ratio:1/1;height:auto}
.pd-thumb.img img{width:100%;height:100%;object-fit:cover;display:block}
/* ---------- 免费资料库 ---------- */
.res-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
/* 题库页题册桌面 4 列（与课程卡尺寸一致），资料库维持 3 列 */
@media (min-width:768px){#zGrid{grid-template-columns:repeat(4,1fr)}}
.res-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px 16px 14px;
display:flex;flex-direction:column;gap:9px;transition:.2s}
.res-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#D3DCE8}
.res-card h4{font-size:15.5px;font-weight:800;line-height:1.45}
.rc-top{display:flex;gap:6px;flex-wrap:wrap;align-items:center}
.rc-kind{font-size:11.5px;padding:2px 8px;border-radius:4px;background:var(--gold);color:#8A6A16;font-weight:700}
.rc-top-flag{font-size:11.5px;padding:2px 8px;border-radius:4px;background:var(--accent);color:#fff;font-weight:700}
.rc-maj{font-size:11.5px;padding:2px 8px;border-radius:4px;background:#EEF3F8;color:var(--ink-2)}
.rc-desc{font-size:13px;color:var(--muted);line-height:1.75;flex:1}
.rc-meta{display:flex;gap:8px;align-items:center;font-size:12px;color:var(--muted);flex-wrap:wrap}
.rc-pdf{background:#C0392B;color:#fff;font-size:10.5px;font-weight:800;padding:2px 6px;border-radius:3px;letter-spacing:.3px}
.rc-pdf-wait{background:#EEE;color:#888;border:1px solid #DDD}
.rc-foot{display:flex;gap:8px;align-items:center;flex-wrap:wrap;border-top:1px dashed var(--line);padding-top:11px}
.rc-got{font-size:12px;color:var(--ok);font-weight:700}
@media (max-width:980px){.res-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.res-grid{grid-template-columns:1fr}}
/* ================= 在线题库（quiz.html） ================= */
/* 列表卡片里的进度条 */
.qz-progress{margin:10px 0 2px}
.qz-progress .bar{height:6px;border-radius:4px;background:#EDF1F5;overflow:hidden;margin-bottom:5px}
.qz-progress .bar i{display:block;height:100%;background:linear-gradient(90deg,#2E9E6B,#3BB07A);border-radius:4px}
.qz-progress span{font-size:12px;color:var(--muted)}
/* 做题页顶栏 */
.qz-topbar{display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap;background:#fff;
border:1px solid var(--line);border-radius:14px;padding:12px 16px;margin-bottom:16px}
.qz-tb-l{display:flex;align-items:center;gap:12px;flex-wrap:wrap;min-width:0}
.qz-tb-r{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.qz-secsel{max-width:320px;padding:8px 10px;border:1px solid var(--line);border-radius:8px;font-size:13.5px;background:#fff}
/* ---------- 章节级联菜单（hover 逐级展开：分类 → 章 → 节 → 小节，列内可滚动） ---------- */
.qz-cas{position:relative;display:inline-block}
.qz-cas-btn{display:inline-flex;align-items:center;gap:6px;max-width:340px;padding:8px 12px;border:1px solid var(--line);
border-radius:9px;background:#fff;font-size:13.5px;font-weight:600;color:var(--ink);cursor:pointer}
.qz-cas-btn:hover{border-color:var(--brand-2);color:var(--brand)}
.qz-cas-btn span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.qz-cas-btn i{font-style:normal;color:var(--muted);font-size:11px}
.qz-cas-panel{display:none;position:absolute;z-index:80;top:calc(100% + 6px);left:0;
background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 14px 40px rgba(20,45,80,.18);
padding:8px;gap:8px;flex-wrap:nowrap}
.qz-cas-panel.show{display:flex}
.qz-cas-col{width:186px;min-width:186px;display:flex;flex-direction:column;background:#FBFCFE;border:1px solid #EEF2F7;border-radius:9px;overflow:hidden}
.qz-cas-h{font-size:11.5px;color:var(--muted);padding:7px 10px 5px;border-bottom:1px solid #EEF2F7;background:#F5F8FB}
.qz-cas-list{max-height:290px;overflow-y:auto;overscroll-behavior:contain;padding:4px}
.qz-cas-i{display:flex;align-items:center;gap:6px;padding:8px 9px;border-radius:7px;font-size:13px;cursor:pointer;line-height:1.4}
.qz-cas-i:hover,.qz-cas-i.on{background:#EAF2FB;color:var(--brand)}
.qz-cas-i.cur{background:var(--accent);color:#fff}
.qz-cas-i .t{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.qz-cas-i .n{font-size:11px;color:var(--muted);flex:none}
.qz-cas-i.cur .n{color:rgba(255,255,255,.85)}
.qz-cas-i .ar{color:var(--muted);font-size:13px;flex:none}
/* ---------- 右侧目录（宽屏显示，可折叠 / 可滚动） ---------- */
.qz-body{display:block}
.qz-toc{display:none}
.qz-toc-open{display:none}
@media (max-width:820px){
.qz-cas-panel{flex-direction:column;max-height:62vh;overflow-y:auto;max-width:calc(100vw - 40px)}
.qz-cas-col{width:100%;min-width:0}
.qz-cas-list{max-height:none}
}
@media (min-width:1400px){
#qzDo.wrap,.wrap#qzDo{max-width:1500px}
.qz-body{display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:20px;align-items:start}
.qz-toc{display:block;position:sticky;top:16px;background:#fff;border:1px solid var(--line);border-radius:14px;
padding:12px 4px 12px 12px;max-height:calc(100vh - 40px);display:flex;flex-direction:column}
.qz-toc-head{display:flex;align-items:center;gap:8px;padding-right:8px;margin-bottom:8px}
.qz-toc-head b{font-size:14px}
.qz-toc-head button{border:1px solid var(--line);background:#fff;border-radius:6px;font-size:11.5px;
padding:3px 7px;cursor:pointer;color:var(--muted)}
.qz-toc-head button:hover{border-color:var(--brand-2);color:var(--brand)}
.qz-toc-body{overflow-y:auto;overscroll-behavior:contain;padding-right:8px;flex:1;min-height:0}
.qz-toc-i{margin:1px 0}
.qz-toc-row{display:flex;align-items:center;gap:4px;padding:6px 7px;border-radius:7px;font-size:13px;cursor:pointer;line-height:1.45}
.qz-toc-row:hover{background:#F1F6FC}
.qz-toc-i.cur > .qz-toc-row{background:var(--accent);color:#fff}
.qz-toc-i.cur > .qz-toc-row .chev,.qz-toc-i.cur > .qz-toc-row .cnt{color:rgba(255,255,255,.9)}
.qz-toc-row .chev{width:14px;flex:none;color:var(--brand);font-size:11px;text-align:center}
.qz-toc-row .chev.none{color:transparent}
.qz-toc-row .nm{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.qz-toc-row .cnt{font-style:normal;font-size:11px;color:var(--muted);flex:none}
.qz-toc-sub{margin-left:12px;border-left:1px dashed #E3EAF2;padding-left:4px}
.qz-toc-i.d1 .qz-toc-row{font-size:12.5px}
.qz-toc-i.d2 .qz-toc-row{font-size:12px;color:var(--muted)}
.qz-toc-i.d3 .qz-toc-row{font-size:12px;color:var(--muted)}
.qz-toc-open{display:none;position:fixed;right:18px;top:96px;z-index:60;width:40px;height:40px;border-radius:50%;
border:1px solid var(--line);background:#fff;box-shadow:0 6px 18px rgba(20,45,80,.14);cursor:pointer;font-size:17px}
body.toc-off .qz-toc{display:none}
body.toc-off .qz-toc-open{display:block}
body.toc-off .qz-body{grid-template-columns:minmax(0,1fr)}
}
.qz-modes{display:flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.qz-modes button{border:0;background:#fff;padding:7px 13px;font-size:13px;cursor:pointer;color:var(--muted);font-weight:600}
.qz-modes button.on{background:var(--accent);color:#fff}
.qz-prog{font-size:13.5px;color:var(--muted)}
.qz-prog b{color:var(--accent);font-size:16px}
/* 顶栏目录小按钮（题册名 / 章节选择器右侧） */
.qz-toc-mini{border:1px solid var(--line);background:#fff;border-radius:8px;padding:7px 11px;
font-size:12.5px;font-weight:700;color:#33475B;cursor:pointer;white-space:nowrap}
.qz-toc-mini:hover{border-color:var(--brand-2);color:var(--brand);background:#F7FAFE}
/* 悬浮目录面板：可拖动、可关闭 */
#zTocFloat{position:fixed;z-index:300;width:340px;max-width:calc(100vw - 20px);max-height:min(72vh,640px);
background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;
box-shadow:0 16px 48px rgba(10,30,60,.26);display:flex;flex-direction:column}
.qz-tf-head{display:flex;align-items:center;gap:8px;padding:10px 14px;background:#141C26;color:#fff;
cursor:move;user-select:none;touch-action:none}
.qz-tf-head b{font-size:14px}
.qz-tf-head button{border:1px solid rgba(255,255,255,.25);background:transparent;border-radius:6px;
font-size:11.5px;padding:3px 8px;cursor:pointer;color:rgba(255,255,255,.85)}
.qz-tf-head button:hover{background:rgba(255,255,255,.14);color:#fff}
.qz-tf-body{overflow-y:auto;overscroll-behavior:contain;padding:10px 12px}
/* 右侧答题卡面板（复用 .qz-toc 容器布局）：题号网格 + 底部操作按钮 */
.qz-side-grid{flex:none;max-height:368px;min-height:120px;overflow-y:auto;overscroll-behavior:contain;padding-right:8px;
display:grid;grid-template-columns:repeat(auto-fill,minmax(48px,1fr));gap:8px;align-content:start}
.qz-side-grid .qz-cell{height:38px;font-size:13.5px;min-width:0}
.qz-side-nav{display:flex;flex-direction:column;gap:8px;padding:12px 8px 2px 0;border-top:1px dashed var(--line);margin-top:10px}
.qz-side-nav .btn{width:100%}
.qz-side-nav .btn:disabled{opacity:.4;cursor:not-allowed}
/* 题卡水印：仅平铺在题目卡（含解析）内部 */
.qz-card{position:relative}
.qz-wm{position:absolute;inset:0;pointer-events:none;background-repeat:repeat;border-radius:inherit;z-index:3}
/* 题卡 */
.qz-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px 24px;margin-bottom:14px}
.qz-qhead{display:flex;align-items:center;gap:12px;margin-bottom:14px;flex-wrap:wrap}
.qz-type{background:#EAF1FB;color:var(--primary);font-size:12.5px;font-weight:800;padding:3px 9px;border-radius:5px}
.qz-no{font-size:13px;color:var(--muted)}
.qz-favbtn{margin-left:auto;border:1px solid var(--line);background:#fff;border-radius:20px;padding:5px 13px;
font-size:12.5px;cursor:pointer;color:var(--muted)}
.qz-favbtn.on{color:#D97706;border-color:#F2C94C;background:#FFF8E8}
/* 动画解析按钮：位于收藏本题左侧（有 anim 时渲染；margin-left:auto 内联给出，
此时 favbtn 的 auto margin 由内联 margin-left:8px 覆盖，避免双 auto 撑出大缝） */
.qz-animbtn{border:1px solid #C9D6F2;background:#F4F7FF;border-radius:20px;padding:5px 13px;
font-size:12.5px;cursor:pointer;color:#3B5BDB;font-weight:600}
.qz-animbtn:hover{background:#E8EEFC;border-color:#9FB6EC}
.qz-stem{font-size:15.5px;line-height:1.9;color:var(--ink)}
/* 年份题号角标：分类真题导入时剥出的「2022-2」式真题来源标注，缀在题干末尾展示 */
.qz-srctag{display:inline-block;margin-left:8px;padding:1px 9px;font-size:12px;line-height:1.7;color:#1A6FA8;background:#EAF4FB;border:1px solid #C8E1F2;border-radius:9px;vertical-align:2px;white-space:nowrap;font-weight:600}
/* 题干图片独占一行居中：学生端(.qz-stem)与后台题干列(.qz-stem-cell)；
!important 覆盖存量题 HTML 中的内联 margin（部分旧数据 margin:6px 0 左对齐） */
.qz-stem img,.qz-stem-cell img{max-width:100%;max-height:300px;width:auto;height:auto;vertical-align:middle;display:block;margin:8px auto !important;border-radius:8px;cursor:zoom-in}
/* 选项图片强制与文字同行：紧跟文字、不独占一行（题干不受影响）。
display/vertical-align/margin 均 !important：覆盖存量题 HTML 写死的内联
display:block;margin:6px auto（旧版 _MD_IMG_STYLE 会落库到 img style） */
.qz-opt-t img,.qz-opt-cell img,.qz-opt-i img{max-width:100%;max-height:180px;width:auto;height:auto;display:inline-block !important;vertical-align:middle !important;margin:0 4px !important;border-radius:6px;cursor:zoom-in}
/* 后台编辑拖拽放大过的图（qz-img-free，由 JS 按 CSSOM style.width 非空判定）前端跟随放大：
解除默认 max-height 上限（题干300px/选项180px），height:auto 锁定宽高比防变形；max-width:100% 仍防溢出 */
.qz-stem img.qz-img-free,.qz-opt-t img.qz-img-free,.qz-exp-t img.qz-img-free{max-height:none;height:auto !important}
/* 选项内容若被 包裹（Word 导入/编辑器粘贴常见），取消段落块级使文字与图片连排 */
.qz-opt-t p{display:inline;margin:0}
.qz-stem p{margin:0 0 6px}
/* Word 导入表格：题干/解析内的
渲染 */
.qz-table{border-collapse:collapse;width:auto;max-width:100%;margin:10px auto;font-size:13.5px;line-height:1.7;overflow:auto}
.qz-table th,.qz-table td{border:1px solid var(--line);padding:6px 12px;text-align:center;vertical-align:middle}
.qz-table th{background:#F5F8FB;font-weight:700;color:var(--ink)}
.qz-table td img,.qz-table th img{max-width:100%;height:auto}
.imp-q table{border-collapse:collapse;width:auto;max-width:100%;margin:8px 0;font-size:13px;line-height:1.6}
.imp-q table th,.imp-q table td{border:1px solid var(--line);padding:5px 10px;text-align:left;vertical-align:top}
.imp-q table th{background:#F5F8FB;font-weight:700}
.qz-opts{margin-top:14px;display:flex;flex-direction:column;gap:10px}
.qz-opt{display:flex;gap:12px;align-items:flex-start;border:1.5px solid var(--line);border-radius:10px;
padding:12px 14px;cursor:pointer;transition:.15s;position:relative}
.qz-opt:hover{border-color:var(--accent);background:#FBFDFF}
.qz-opt.picked{border-color:var(--accent);background:#F2F8FF}
.qz-opt.right{border-color:#2E9E6B;background:#F0FAF4}
.qz-opt.wrong{border-color:#C0392B;background:#FDF3F1}
.qz-letter{flex:0 0 30px;height:30px;border-radius:50%;background:#EDF1F5;color:var(--muted);
display:flex;align-items:center;justify-content:center;font-weight:800;font-size:13.5px}
.qz-opt.right .qz-letter{background:#2E9E6B;color:#fff}
.qz-opt.wrong .qz-letter{background:#C0392B;color:#fff}
.qz-opt-t{flex:1;font-size:14.5px;line-height:1.8;min-width:0;overflow:visible}
/* 大公式完整展示：不出滚动条、不裁剪 */
.qz-stem .katex-display,.qz-opt-t .katex-display,.qz-exp-t .katex-display{overflow:visible;margin:6px 0}
.qz-stem .katex-display>.katex,.qz-opt-t .katex-display>.katex,.qz-exp-t .katex-display>.katex{white-space:normal}
.qz-mark{position:absolute;right:12px;top:12px;color:#2E9E6B;font-weight:800}
.qz-mark.bad{color:#C0392B}
/* 解析面板 */
.qz-exp{margin-top:16px;border-top:1px dashed var(--line);padding-top:14px;font-size:14px;line-height:1.9}
.qz-exp b{color:#2E9E6B;margin-right:12px}
.qz-verdict{font-size:13px;padding:2px 9px;border-radius:5px;font-weight:700}
.qz-verdict.ok{background:#F0FAF4;color:#2E9E6B}
.qz-verdict.no{background:#FDF3F1;color:#C0392B}
.qz-exp-t{margin-top:8px;color:var(--ink)}
/* 解析画线标注：答案行右侧 ✏️ 按钮，解析区覆盖画布，画线不易看眼花 */
.qz-exp{position:relative}
.qz-exp-head{display:flex;align-items:center;gap:8px;flex-wrap:wrap;position:relative;z-index:7}
.qz-exp-head b{flex-shrink:0}
.qz-penbtn{margin-left:auto;flex-shrink:0;border:1.5px solid var(--line);background:#fff;border-radius:8px;width:30px;height:30px;cursor:pointer;font-size:15px;line-height:1;transition:.15s;color:inherit}
.qz-penbtn:hover{border-color:var(--accent);background:#FBFDFF}
.qz-penbtn.on{background:var(--accent);border-color:var(--accent)}
.z-pen-canvas{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;display:none;z-index:6;touch-action:none}
.z-pen-canvas.on{display:block;pointer-events:auto;cursor:crosshair}
.z-pen-canvas.on.ro{pointer-events:none;cursor:default}
.z-pen-bar{position:absolute;top:10px;right:10px;z-index:9;display:flex;gap:7px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:0 6px 24px rgba(15,23,42,.14);padding:7px 10px;flex-wrap:wrap;max-width:100%}
.z-pen-bar button{border:1px solid var(--line);background:#fff;border-radius:6px;padding:3px 9px;font-size:12px;cursor:pointer;line-height:1.4}
.z-pen-bar button:hover{border-color:var(--accent);color:var(--accent)}
.z-pen-bar .pc{width:18px;height:18px;border-radius:50%;cursor:pointer;box-shadow:inset 0 0 0 1px rgba(0,0,0,.12)}
.z-pen-bar .pc.on{box-shadow:0 0 0 2px var(--accent)}
.z-pen-bar .pw{width:26px;height:24px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:6px;cursor:pointer;color:#9CA3AF}
.z-pen-bar .pw.on{border-color:var(--accent);color:var(--accent);box-shadow:0 0 0 1px var(--accent)}
.hidden{display:none}
/* 底部操作：桌面端悬浮在视口底部（fixed），不随题目滚动而移走
（sticky bottom 对"自然位置已在首屏内"的元素不吸附，故改 fixed 定宽对齐左栏） */
.qz-nav{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;
background:#fff;border-top:1px solid var(--line);box-shadow:0 -6px 20px rgba(20,45,80,.06);padding:12px 16px}
.qz-nav .btn{min-width:130px}
.qz-nav .btn:disabled{opacity:.4;cursor:not-allowed}
/* 教师勘误条：仅教师账号显示（学员端隐藏），位于「上一题」上方 */
.qz-fixbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;
margin:0 0 10px;padding:10px 14px;background:#FFF9F3;border:1px dashed #E8B27D;border-radius:12px}
.qz-fixbar .qz-fixtip{font-size:12.5px;color:#9A6B32}
.qz-fixbar .btn{min-width:0}
@media (max-width:767.98px){
/* 手机端刷题：底栏是固定的，勘误条也固定悬浮在其上方（贴着「上一题」的上边） */
body.zg-quiz-do .qz-fixbar{position:fixed;left:10px;right:10px;bottom:calc(var(--zg-tab, 0px) + 72px);z-index:179;
margin:0;background:#fff;box-shadow:0 -6px 18px rgba(20,45,80,.10)}
.qz-fixbar .qz-fixtip{display:none} /* 手机端只留按钮，说明文字不占位 */
}
/* 教师勘误弹窗：所见即所得编辑区（公式 / 图片按学员端渲染，contenteditable 直接改） */
.fix-rich{border:1px solid var(--line);border-radius:8px;padding:10px 12px;background:#FFFDF9;
font-size:14.5px;line-height:1.9;min-height:52px;max-height:340px;overflow:auto;outline:none}
.fix-rich:focus{border-color:#E8B27D;box-shadow:0 0 0 2px rgba(232,178,125,.18)}
.fix-rich img{max-width:100%;height:auto}
.fix-rich .katex-display{margin:.5em 0}
.fix-rich-opt{display:flex;gap:8px;align-items:flex-start;margin-bottom:6px}
.fix-rich-opt .qz-letter{flex:none;margin-top:2px}
.fix-rich-opt-t{flex:1;min-height:42px}
.fix-rich-exp{max-height:420px;color:#3D4A5C}
/* 公式 / 图片原子块可点提示：悬停描边 + 手型，点击弹出小编辑窗 */
.fix-rich .katex, .fix-rich img, .fix-rich video, .fix-rich audio{border-radius:4px;transition:box-shadow .12s}
.fix-rich .katex:hover, .fix-rich img:hover, .fix-rich video:hover, .fix-rich audio:hover{
cursor:pointer;box-shadow:0 0 0 3px rgba(232,178,125,.4)}
/* 公式 / 图片小编辑窗：fixed 挂 body，不被弹窗裁剪 */
#fxPop{position:fixed;z-index:1200;background:#fff;border:1px solid #E8B27D;border-radius:10px;
box-shadow:0 12px 36px rgba(20,40,70,.22);padding:10px 12px;box-sizing:border-box}
#fxPop .fx-pop-head{font-size:12.5px;font-weight:700;color:#9A6B32;margin-bottom:6px}
#fxPop textarea{width:100%;box-sizing:border-box;padding:8px 10px;border:1px solid var(--line);
border-radius:8px;font-size:13px;font-family:ui-monospace,Menlo,Consolas,monospace;resize:vertical}
#fxPop textarea:focus{outline:none;border-color:#E8B27D;box-shadow:0 0 0 2px rgba(232,178,125,.18)}
#fxPop .fx-pop-btns{display:flex;gap:8px;align-items:center;margin-top:8px}
#fxPop .fx-pop-btns button{padding:6px 14px;border:1px solid var(--line);border-radius:8px;
background:#fff;font-size:13px;cursor:pointer}
#fxPop .fx-pop-btns button:hover{border-color:#E8B27D;background:#FFF9F3}
#fxPop .fx-pop-btns .fx-pop-ok{background:var(--accent,#E8833A);border-color:var(--accent,#E8833A);color:#fff;font-weight:700}
@media (min-width:768px){
.qz-main{padding-bottom:110px}
.qz-nav{position:fixed;bottom:0;left:50%;transform:translateX(-50%);width:min(calc(100vw - 40px),1160px);z-index:90;
border:1px solid var(--line);border-bottom:none;border-radius:14px 14px 0 0}
}
@media (min-width:1400px){
/* 宽屏双栏：底部操作按钮已移到右侧答题卡下方（右下角），主列底栏隐藏 */
.qz-nav{width:calc(min(100vw,1460px) - 360px);left:calc((100vw - min(100vw,1460px))/2 + 20px);transform:none;display:none}
.qz-main{padding-bottom:20px}
}
@media (min-width:768px){ #zFab{display:none!important} }
@media (min-width:1400px){
/* 宽屏双栏：底部导航移到右侧答题卡，主列勘误条隐藏（侧栏勘误条就在「上一题」上方） */
#zFixBar{display:none!important}
}
/* 答题卡 */
.qz-legend{display:flex;gap:16px;font-size:12.5px;color:var(--muted);margin-bottom:12px;flex-wrap:wrap}
.qz-legend .lg{display:inline-block;width:13px;height:13px;border-radius:3px;background:#EDF1F5;
border:1px solid var(--line);margin-right:4px;vertical-align:-2px}
.qz-legend .lg-ok{background:#2E9E6B;border-color:#2E9E6B}
.qz-legend .lg-no{background:#C0392B;border-color:#C0392B}
.qz-legend .lg-fav{background:#FFF3D6;border-color:#F2C94C}
.qz-cardgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(44px,1fr));gap:8px}
.qz-cell{position:relative;height:42px;border:1.5px solid var(--line);border-radius:8px;background:#fff;
font-weight:700;font-size:14px;cursor:pointer;color:var(--ink)}
.qz-cell.ok{background:#2E9E6B;border-color:#2E9E6B;color:#fff}
.qz-cell.no{background:#C0392B;border-color:#C0392B;color:#fff}
.qz-cell.cur{outline:2.5px solid var(--accent);outline-offset:1px}
.qz-cell i{position:absolute;top:-6px;right:-4px;font-style:normal;font-size:11px;color:#D97706}
/* 完成小结 */
.qz-done{text-align:center;padding:8px 0 4px}
.qz-done .score{font-size:44px;font-weight:900;line-height:1.2}
.qz-done .score.good{color:#2E9E6B}
.qz-done .score.mid{color:#D97706}
.qz-done .score.bad{color:#C0392B}
.qz-done p{color:var(--muted);font-size:14px;margin-top:6px}
/* ---------- 题库：全站数据条 / 封面 / 价格 ---------- */
.qz-statbar{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:18px}
.qz-st{border:1px solid var(--line);border-radius:14px;background:#fff;padding:16px 10px;text-align:center}
.qz-st b{display:block;font-size:23px;font-weight:900;color:var(--accent);line-height:1.2}
.qz-st span{font-size:12.5px;color:var(--muted)}
.qz-cover{position:relative;aspect-ratio:1/1;margin:-16px -16px 12px;border-radius:14px 14px 0 0;overflow:hidden;
background:linear-gradient(135deg,#0B3A6F,#2E6FA8)}
.qz-cover img{width:100%;height:100%;object-fit:cover;display:block}
.qz-cover.no{display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#123E63,#2E6FA8)}
.qz-cover.no span{font-size:30px;font-weight:900;color:rgba(255,255,255,.82);letter-spacing:2px;white-space:pre-line;line-height:1.4;text-align:center;padding:0 16px}
.qz-cover .rc-top-flag{position:absolute;left:10px;top:10px;z-index:2}
.qz-lock{position:absolute;right:10px;top:10px;z-index:2;background:rgba(0,0,0,.55);color:#fff;
font-size:11.5px;padding:3px 9px;border-radius:999px;backdrop-filter:blur(2px)}
.qz-price{font-weight:800;color:var(--accent);font-size:15px}
.qz-price.free{color:#2E9E6B}
.qz-srate{font-size:12px;color:var(--muted)}
.qz-qrate{font-size:12px;color:var(--muted);padding:2px 8px;background:#F4F7FA;border-radius:999px}
/* ---------- 题库：笔记 ---------- */
.qz-notes{margin-top:22px;border:1px solid var(--line);border-radius:14px;background:#fff;overflow:hidden}
.qz-note-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:12px 16px;border-bottom:1px solid var(--line);background:#FAFBFD}
.qz-note-head b{font-size:15px}
.qz-note-tabs{margin-left:auto;display:flex;gap:6px}
.qz-note-tabs button{padding:6px 14px;border:1px solid var(--line);border-radius:999px;background:#fff;font-size:13px;cursor:pointer}
.qz-note-tabs button.on{background:var(--brand);color:#fff;border-color:var(--brand)}
.qz-note-input{width:100%;border:1px solid var(--line);border-radius:10px;padding:10px 12px;font-size:14px;
line-height:1.8;resize:vertical;font-family:inherit;margin:14px 16px 0;width:calc(100% - 32px)}
.qz-note-foot{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:10px 16px 14px}
.qz-check{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--muted);cursor:pointer}
.qz-check input{width:15px;height:15px;accent-color:var(--accent)}
.qz-note-item{border-top:1px dashed var(--line);padding:10px 16px}
.qz-note-item:first-child{border-top:0}
.qz-note-h{display:flex;justify-content:space-between;gap:10px;font-size:12.5px;color:var(--muted);margin-bottom:4px}
.qz-note-h b{color:var(--ink);font-size:13.5px}
.qz-note-b{font-size:14px;line-height:1.8;color:var(--ink);white-space:pre-wrap;word-break:break-word}
#zNotePub{padding:14px 16px;font-size:13.5px}
/* ---------- 题库：草稿纸（透明浮层，可边做题边写） ---------- */
#draftFloat{position:fixed;inset:0;z-index:180;pointer-events:none}
.df-paper{position:fixed;inset:0;width:100vw;height:100vh;display:flex;flex-direction:column;
pointer-events:auto;background:transparent;border:none;border-radius:0;box-shadow:none;overflow:hidden}
.df-save{position:absolute;right:16px;top:72px;z-index:3;height:38px;padding:0 18px;border:none;border-radius:19px;
display:flex;align-items:center;gap:6px;cursor:pointer;font-size:14px;font-weight:800;color:#fff;font-family:inherit;
background:linear-gradient(135deg,#1BD48D,#0FA968);box-shadow:0 4px 18px rgba(15,169,104,.6),0 0 0 2px rgba(255,255,255,.9)}
.df-save:hover{filter:brightness(1.1)}
.df-save:active{transform:scale(.96)}
.qz-draft-canvas{display:block;flex:1 1 auto;width:100%;min-height:0;background:rgba(255,255,255,.4);touch-action:none;cursor:crosshair}
.df-bar{display:flex;align-items:center;gap:6px;flex-wrap:wrap;padding:9px 12px;flex-shrink:0;
border-top:1px solid rgba(10,88,128,.18);background:rgba(250,251,253,.96);box-shadow:0 -2px 10px rgba(9,52,80,.08)}
.df-bar .btn.on{background:var(--brand);color:#fff;border-color:var(--brand)}
.df-sep{width:1px;height:20px;background:var(--line);margin:0 4px}
.df-tip{font-size:12px;color:var(--muted)}
/* 题库管理：题目公式渲染 + 章节折叠 */
/* KaTeX 公式是不换行的长串，自动表格布局下会把题干列撑出页面 ——
题目表固定布局（列宽由表头决定），超宽公式在题干/选项格内横向滚动而不是撑破版面 */
#qzTable,#qzSearchTable{table-layout:fixed;width:100%}
.qz-stem-cell{font-size:13.5px;line-height:1.6;word-break:break-word;max-width:100%;overflow-x:auto;overflow-y:hidden}
.qz-opt-cell{margin-top:5px;font-size:12.5px;color:var(--ink);display:flex;flex-wrap:wrap;gap:4px 14px;max-width:100%}
.qz-opt-i{max-width:100%;min-width:0;overflow-x:auto;overflow-y:hidden}
/* 行间公式同样收进格内（与 1298 行学生端同款处理） */
.qz-stem-cell .katex-display,.qz-opt-i .katex-display{overflow-x:auto;overflow-y:hidden;margin:6px 0}
.qz-meta{margin-top:5px}
tr.qz-sechead{cursor:default;background:#EEF3F8}
tr.qz-sechead:hover{background:#E4ECF4}
.qz-chev{display:inline-block;width:18px;color:var(--brand);font-weight:700;cursor:pointer;user-select:none}
tr.qz-sechead.collapsed .qz-chev{color:var(--muted)}
/* 四级层级行：分类（大标题）› 章 › 节 › 小节 */
tr.qz-cathead{cursor:default;background:#DCE7F3;border-top:2px solid #C3D6EA}
tr.qz-cathead:hover{background:#D1DEEE}
tr.qz-cathead b{font-size:15px;color:var(--brand)}
tr.qz-chaphead{cursor:default;background:#E5EDF6}
tr.qz-chaphead:hover{background:#DCE6F2}
tr.qz-chaphead b{font-size:14px}
tr.qz-subhead{cursor:default;background:#EDF2F8}
tr.qz-subhead:hover{background:#E5ECF5}
tr.qz-subhead b{font-size:13.5px}
tr.qz-cathead.collapsed .qz-chev,tr.qz-chaphead.collapsed .qz-chev,tr.qz-subhead.collapsed .qz-chev{color:var(--muted)}
/* ---------- 题库：科学计算器（卡西欧 fx-991CN CW 风格 · 亮色） ---------- */
.calc-body{margin:0 auto;background:linear-gradient(165deg,#FFFFFF,#EDF1F6 60%,#E3E9F0);border:1px solid #D5DEE8;
border-radius:16px 16px 28px 28px;padding:14px 14px 16px;box-shadow:0 22px 60px rgba(30,60,90,.25),inset 0 1px 0 #fff}
.calc-top{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.calc-solar{display:flex;gap:2px;background:#39434E;border-radius:4px;padding:3px 5px;box-shadow:inset 0 1px 3px rgba(0,0,0,.45)}
.calc-solar i{width:13px;height:10px;background:linear-gradient(180deg,#5A6C7E,#32404D);border-radius:1px}
.calc-off{margin-left:auto;width:26px;height:26px;border:1px solid #CBD5E0;border-radius:50%;cursor:pointer;
background:#fff;color:#5A6B7C;font-size:13px;line-height:1}
.calc-off:hover{background:#F0F4F8}
.calc-tabs{display:flex;gap:4px;overflow-x:auto;margin-bottom:9px;padding-bottom:2px}
.calc-tabs button{flex:none;border:1px solid #D5DEE8;cursor:pointer;font-family:inherit;font-size:12px;font-weight:600;color:#51606F;
background:#fff;border-radius:14px;padding:5px 12px}
.calc-tabs button:hover{border-color:#8FB6DC}
.calc-tabs button.on{background:linear-gradient(135deg,#1BD48D,#0FA968);border-color:#0FA968;color:#fff}
.calc-lcd{background:linear-gradient(180deg,#CDD5C0,#BDC7B0);border:2px solid #8B9682;border-radius:8px;
padding:7px 12px 10px;box-shadow:inset 0 2px 8px rgba(40,60,30,.3)}
.calc-lcd-ind{display:flex;justify-content:space-between;font-size:11px;font-weight:700;letter-spacing:1px;color:#3D4830}
.calc-lcd-ind span:last-child{opacity:.55}
.calc-lcd-exp{display:block;width:100%;box-sizing:border-box;background:transparent;border:none;outline:none;
font-family:ui-monospace,Menlo,Consolas,monospace;font-size:17px;text-align:right;color:#1B2413;padding:4px 0 2px}
.calc-lcd-res{text-align:right;font-size:25px;font-weight:800;color:#141D0C;font-family:ui-monospace,Menlo,Consolas,monospace;
min-height:32px;word-break:break-all;border-top:1px dashed rgba(61,72,48,.4);padding-top:4px}
.calc-lcd-res.err{color:#8F1D0E;font-size:18px}
.calc-lcd-res.hint{font-size:13px;font-weight:500;color:#39432F;text-align:center;padding-top:8px;min-height:28px}
.calc-keys{display:grid;grid-template-columns:repeat(6,1fr);gap:7px;margin-top:13px}
.calc-keys button{border:1px solid #D0D9E2;border-radius:8px;padding:11px 0;font-size:14px;font-weight:600;cursor:pointer;
font-family:inherit;color:#2B3A49;background:linear-gradient(180deg,#FFFFFF,#F2F5F9);
box-shadow:0 2px 0 rgba(90,110,135,.28)}
.calc-keys button:active{transform:translateY(2px);box-shadow:0 .5px 0 rgba(90,110,135,.28)}
.calc-keys button.num{background:linear-gradient(180deg,#FFFFFF,#FAFCFE);font-size:16px;font-weight:700}
.calc-keys button.fn{font-size:12.5px;font-weight:600;color:#2E5E8E;background:linear-gradient(180deg,#F2F7FB,#E7EEF5)}
.calc-keys button.op{color:#E06A1B;font-size:17px;font-weight:700}
.calc-keys button.deg{color:#0E8A54;font-size:12.5px;font-weight:700}
.calc-keys button.del{color:#E06A1B}
.calc-keys button.shift{color:#9A6B12;font-size:12.5px;font-weight:700;background:linear-gradient(180deg,#FDF6E3,#F7ECD0);border-color:#E8D9AE}
.calc-keys button.shifted{outline:2px solid #E08A2E;outline-offset:-2px;color:#B05E0A}
.calc-keys button.ac{background:linear-gradient(180deg,#F0854A,#E06A1B);border-color:#C95C12;color:#fff;font-weight:800}
.calc-keys button.eq{background:linear-gradient(180deg,#4E9BE8,#3379CC);border-color:#2B6AB5;color:#fff;font-weight:800;font-size:15px}
.calc-note{margin-top:11px;font-size:11px;color:#6E7E8E;text-align:center}
.calc-fnmenu{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin-top:4px}
.calc-fnmenu button{border:1px solid #D0D9E2;border-radius:8px;padding:10px 0;font-size:12.5px;font-weight:600;cursor:pointer;
font-family:inherit;color:#2E5E8E;background:linear-gradient(180deg,#F7FAFD,#EDF2F8);box-shadow:0 2px 0 rgba(90,110,135,.22)}
.calc-fnmenu button:active{transform:translateY(1px)}
.calc-fnmenu .fnback{grid-column:1/-1;background:linear-gradient(180deg,#4E9BE8,#3379CC);border-color:#2B6AB5;color:#fff;font-weight:700}
.calc-panel{background:#F7FAFD;border:1px solid #D5DEE8;border-radius:12px;padding:12px;margin-top:4px}
.calc-p-title{color:#0E8A54;font-size:12.5px;font-weight:700;margin:10px 0 6px}
.calc-p-title:first-child{margin-top:0}
.calc-p-hint{color:#6E7E8E;font-size:11.5px;margin:4px 0}
.calc-p-row{display:flex;align-items:center;gap:7px;flex-wrap:wrap;margin-bottom:8px}
.calc-p-row input,.calc-p-row select{background:#fff;border:1px solid #C4CFDA;border-radius:7px;color:#22303E;
padding:7px 8px;font-size:13.5px;font-family:ui-monospace,Menlo,Consolas,monospace;outline:none;min-width:60px}
.calc-p-row input:focus,.calc-p-row select:focus{border-color:#3379CC;box-shadow:0 0 0 2px rgba(51,121,204,.15)}
.calc-p-row select{font-family:inherit;min-width:70px}
.calc-ta{flex:1;width:100%;box-sizing:border-box;background:#fff;border:1px solid #C4CFDA;border-radius:7px;
color:#22303E;padding:8px;font-size:13px;font-family:ui-monospace,Menlo,Consolas,monospace;outline:none;resize:vertical}
.calc-p-go{border:none;border-radius:8px;padding:8px 14px;font-size:12.5px;font-weight:700;cursor:pointer;font-family:inherit;
background:linear-gradient(180deg,#4E9BE8,#3379CC);color:#fff}
.calc-p-go.on{background:linear-gradient(135deg,#1BD48D,#0FA968)}
.calc-p-go:active{transform:scale(.97)}
.calc-p-out{background:#fff;border:1px solid #E2E8F0;border-radius:8px;padding:9px 12px;color:#2B3A49;font-size:13.5px;line-height:1.8;
min-height:24px;word-break:break-all}
.calc-tbl{border-collapse:collapse;width:100%}
.calc-tbl td{padding:4px 8px;border-bottom:1px dashed #D8E0E8;font-size:12.5px;color:#445566;text-align:left}
.calc-tbl b{color:#173A5E}
.calc-mat td{text-align:center;font-family:ui-monospace,Menlo,Consolas,monospace;min-width:56px}
.calc-sto-tip{color:#6E7E8E;font-size:11.5px;margin:6px 0}
.calc-sto-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:6px}
.calc-sto-row{display:flex;align-items:center;gap:6px;background:#fff;border:1px solid #E2E8F0;border-radius:8px;padding:6px 9px}
.calc-sto-row b{color:#0E8A54;cursor:pointer;font-size:14px;min-width:16px}
.calc-sto-row b:hover{text-decoration:underline}
.calc-sto-row span{flex:1;color:#22303E;font-size:12.5px;font-family:ui-monospace,Menlo,Consolas,monospace;
overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.calc-sto-row button{border:none;border-radius:6px;padding:4px 8px;font-size:11px;cursor:pointer;font-family:inherit;
background:#3379CC;color:#fff;font-weight:600}
.calc-sto-m{display:flex;gap:6px;margin-top:8px}
.calc-sto-m button{flex:1;border:1px solid #D0D9E2;border-radius:8px;padding:8px 0;font-size:12px;font-weight:600;cursor:pointer;
font-family:inherit;background:#F2F5F9;color:#445566}
.calc-consts{display:grid;grid-template-columns:1fr;gap:5px;max-height:200px;overflow:auto}
.calc-const{display:flex;align-items:center;gap:8px;background:#fff;border:1px solid #E2E8F0;border-radius:8px;padding:6px 10px}
.calc-const b{color:#2B3A49;font-size:12.5px;min-width:104px;font-weight:600}
.calc-const span{flex:1;color:#6E7E8E;font-size:12px;font-family:ui-monospace,Menlo,Consolas,monospace;
overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.calc-const button{border:none;border-radius:6px;padding:4px 10px;font-size:11px;cursor:pointer;font-family:inherit;
background:#0FA968;color:#fff;font-weight:600}
/* ---------- 题库：Word 导入（全屏校对） ---------- */
.imp-qlist{margin-top:12px;display:flex;flex-direction:column;gap:10px}
.imp-q{border:1px solid var(--line);border-radius:12px;padding:12px 16px;background:#fff}
.imp-q.bad{border-color:#E8B4AC;background:#FFF9F8;box-shadow:0 0 0 1px rgba(192,57,43,.15)}
.imp-q-head{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:6px}
.imp-q-no{background:var(--brand);color:#fff;font-size:12px;font-weight:700;border-radius:6px;padding:2px 9px}
.imp-q-type{background:#EEF3F8;color:var(--brand);font-size:12px;border-radius:6px;padding:2px 8px}
.imp-q-ans{background:#F0FAF4;color:#0FA968;font-size:12.5px;border-radius:6px;padding:2px 8px}
.imp-q-warn{color:#C0392B;font-size:12.5px;font-weight:700}
.imp-q-stem{font-size:14px;line-height:1.8;word-break:break-word}
.imp-q-opts{margin-top:6px;display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:4px 18px}
.imp-q-opts>div{font-size:13.5px;color:var(--ink);line-height:1.7}
.imp-q-exp{margin-top:7px;font-size:13px;color:var(--muted);line-height:1.7;border-top:1px dashed var(--line);padding-top:7px}
.imp-q-exp.none{color:#C8A2A0}
.imp-q img{max-width:min(100%,440px) !important;border-radius:8px;display:block;margin:6px 0}
/* 导入预览：图片加载失败可见化（红虚线框+底色），与「没识别出图片」区分开 */
.imp-q img.qz-img-broken{outline:2px dashed #C0392B;outline-offset:3px;background:#FDF3F1;min-width:64px;min-height:40px}
/* ---------- 题库：题目编辑器（所见即所得渲染视图） ---------- */
.qz-rf-view{border:1px solid var(--line);border-radius:10px;padding:12px 16px;background:#FCFCFA;min-height:46px;font-size:14.5px;line-height:1.9;word-break:break-word;cursor:text}
.qz-rf-view:hover{border-color:#B9CBDC}
.qz-rf-view table{border-collapse:collapse;margin:8px 0;max-width:100%}
.qz-rf-view td,.qz-rf-view th{border:1px solid #C9D4DE;padding:5px 10px;font-size:13.5px}
.qz-rf-view img{max-width:min(100%,460px);border-radius:8px;display:block;margin:6px 0}
.qz-tex{cursor:pointer;border-radius:4px}
.qz-tex:hover{background:#FFF3D6;box-shadow:0 0 0 2px #FFF3D6}
/* 导入预览解析差异高亮：橙 = 原稿独有，绿 = 本次导入独有 */
.qz-hl-old{background:#FFE4C7;box-shadow:0 0 0 2px #FFE4C7;border-bottom:2px solid #F08C3C;border-radius:3px;padding:0 2px;color:inherit}
.qz-hl-neu{background:#D9F5E2;box-shadow:0 0 0 2px #D9F5E2;border-bottom:2px solid #23B26D;border-radius:3px;padding:0 2px;color:inherit}
math-field{--caret-color:var(--brand);--primary:var(--brand)}
/* ---------- 计算器：模式 tabs / 面板 ---------- */
.calc-tabs{display:flex;gap:4px;overflow-x:auto;margin-bottom:9px;padding-bottom:2px}
.calc-tabs button{flex:none;border:none;cursor:pointer;font-family:inherit;font-size:12px;font-weight:600;color:#AEBAC4;
background:rgba(255,255,255,.08);border-radius:14px;padding:5px 12px}
.calc-tabs button.on{background:linear-gradient(135deg,#1BD48D,#0FA968);color:#fff}
.calc-lcd-res.hint{font-size:13px;font-weight:500;color:#39432F;text-align:center;padding-top:8px;min-height:28px}
.calc-fnmenu{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin-top:4px}
.calc-fnmenu button{border:none;border-radius:8px;padding:10px 0;font-size:12.5px;font-weight:600;cursor:pointer;
font-family:inherit;color:#B9C4CE;background:linear-gradient(180deg,#3B424A,#2D333A);box-shadow:0 2px 0 rgba(0,0,0,.5)}
.calc-fnmenu button:active{transform:translateY(1px)}
.calc-fnmenu .fnback{grid-column:1/-1;background:linear-gradient(180deg,#4E9BE8,#3379CC);color:#fff;font-weight:700}
.calc-keys button.shifted{outline:2px solid #FFB26B;outline-offset:-2px}
.calc-keys button.shift{color:#FFD98A;font-size:12.5px;font-weight:700}
.calc-panel{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:12px;margin-top:4px}
.calc-p-title{color:#8FD0A0;font-size:12.5px;font-weight:700;margin:10px 0 6px}
.calc-p-title:first-child{margin-top:0}
.calc-p-hint{color:#8A96A0;font-size:11.5px;margin:4px 0}
.calc-p-row{display:flex;align-items:center;gap:7px;flex-wrap:wrap;margin-bottom:8px}
.calc-p-row input,.calc-p-row select{background:#22262B;border:1px solid #3B424A;border-radius:7px;color:#E8EDF2;
padding:7px 8px;font-size:13.5px;font-family:ui-monospace,Menlo,Consolas,monospace;outline:none;min-width:60px}
.calc-p-row input:focus,.calc-p-row select:focus{border-color:#4E9BE8}
.calc-p-row select{font-family:inherit;min-width:70px}
.calc-ta{flex:1;width:100%;box-sizing:border-box;background:#22262B;border:1px solid #3B424A;border-radius:7px;
color:#E8EDF2;padding:8px;font-size:13px;font-family:ui-monospace,Menlo,Consolas,monospace;outline:none;resize:vertical}
.calc-p-go{border:none;border-radius:8px;padding:8px 14px;font-size:12.5px;font-weight:700;cursor:pointer;font-family:inherit;
background:linear-gradient(180deg,#4E9BE8,#3379CC);color:#fff}
.calc-p-go.on{background:linear-gradient(135deg,#1BD48D,#0FA968)}
.calc-p-go:active{transform:scale(.97)}
.calc-p-out{background:rgba(0,0,0,.25);border-radius:8px;padding:9px 12px;color:#D9E2EA;font-size:13.5px;line-height:1.8;
min-height:24px;word-break:break-all}
.calc-tbl{border-collapse:collapse;width:100%}
.calc-tbl td{padding:4px 8px;border-bottom:1px dashed rgba(255,255,255,.12);font-size:12.5px;color:#C9D2DA;text-align:left}
.calc-tbl b{color:#fff}
.calc-mat td{text-align:center;font-family:ui-monospace,Menlo,Consolas,monospace;min-width:56px}
.calc-sto-tip{color:#8A96A0;font-size:11.5px;margin:6px 0}
.calc-sto-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:6px}
.calc-sto-row{display:flex;align-items:center;gap:6px;background:rgba(255,255,255,.05);border-radius:8px;padding:6px 9px}
.calc-sto-row b{color:#8FD0A0;cursor:pointer;font-size:14px;min-width:16px}
.calc-sto-row b:hover{text-decoration:underline}
.calc-sto-row span{flex:1;color:#E8EDF2;font-size:12.5px;font-family:ui-monospace,Menlo,Consolas,monospace;
overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.calc-sto-row button{border:none;border-radius:6px;padding:4px 8px;font-size:11px;cursor:pointer;font-family:inherit;
background:#4E9BE8;color:#fff;font-weight:600}
.calc-sto-m{display:flex;gap:6px;margin-top:8px}
.calc-sto-m button{flex:1;border:none;border-radius:8px;padding:8px 0;font-size:12px;font-weight:600;cursor:pointer;
font-family:inherit;background:linear-gradient(180deg,#3B424A,#2D333A);color:#B9C4CE}
.calc-consts{display:grid;grid-template-columns:1fr;gap:5px;max-height:200px;overflow:auto}
.calc-const{display:flex;align-items:center;gap:8px;background:rgba(255,255,255,.05);border-radius:8px;padding:6px 10px}
.calc-const b{color:#D9E2EA;font-size:12.5px;min-width:104px;font-weight:600}
.calc-const span{flex:1;color:#8A96A0;font-size:12px;font-family:ui-monospace,Menlo,Consolas,monospace;
overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.calc-const button{border:none;border-radius:6px;padding:4px 10px;font-size:11px;cursor:pointer;font-family:inherit;
background:#0FA968;color:#fff;font-weight:600}
/* ---------- 题库：解析图片 / 视频 ---------- */
.qz-exp-img{max-width:100%;border:1px solid var(--line);border-radius:10px;margin-top:10px;cursor:zoom-in;display:block}
/* ---------- 题库：付费墙 ---------- */
.qz-paywall{max-width:900px;margin:0 auto}
.qz-pay-card{display:grid;grid-template-columns:260px 1fr;gap:24px;border:1px solid var(--line);
border-radius:18px;background:#fff;padding:22px;align-items:start}
@media(max-width:760px){.qz-pay-card{grid-template-columns:1fr}}
.qz-pay-cover{height:200px;border-radius:14px;overflow:hidden;background:linear-gradient(135deg,#0B3A6F,#2E6FA8);
display:flex;align-items:center;justify-content:center}
.qz-pay-cover img{width:100%;height:100%;object-fit:cover}
.qz-pay-cover.no span{font-size:46px;font-weight:900;color:rgba(255,255,255,.85);white-space:pre-line;line-height:1.35;text-align:center;padding:0 20px}
.qz-pay-info h3{font-size:21px;font-weight:800;margin-bottom:8px}
.qz-pay-info p{color:var(--muted);font-size:14px;line-height:1.8}
.qz-pay-meta{display:flex;gap:14px;flex-wrap:wrap;font-size:12.5px;color:var(--muted);margin-top:10px}
.qz-pay-price{font-size:32px;font-weight:900;color:var(--accent);margin-top:14px}
.qz-pay-tip{font-size:12.5px;color:var(--muted);margin-top:14px;line-height:1.8}
@media (max-width:640px){
.qz-card{padding:16px 14px}
.qz-secsel{max-width:200px}
.qz-nav .btn{min-width:100px;flex:1}
.qz-statbar{grid-template-columns:1fr 1fr}
.qz-note-tabs{margin-left:0;width:100%}
}
/* ===== 学员课程目录（个人中心「我的课程」/ 课程详情「课时安排」共用） ===== */
.cs-cat{border:1px solid var(--line);border-radius:12px;margin:12px 0;overflow:hidden;background:#fff}
.cs-cat-h{display:flex;align-items:center;justify-content:space-between;padding:13px 16px;cursor:pointer;background:linear-gradient(0deg,#FBFCFE,#fff);font-weight:700}
.cs-cat-h:hover{background:#F5F8FC}
.cs-cat-h b{display:flex;align-items:center;gap:10px;font-size:15px}
.cs-sn{display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;border-radius:7px;background:var(--accent);color:#fff;font-size:13px;font-weight:800;flex:0 0 auto}
.cs-cnt{font-size:12.5px;color:var(--muted);font-weight:600}
.cs-cat-b{display:none;padding:4px 10px 10px}
.cs-cat.open .cs-cat-b{display:block}
/* 我的课程子目录：默认折叠，点击标题展开/折叠（电脑用户端子目录折叠） */
/* 子目录（方案 A：折叠卡片，青绿主色 + 计数胶囊） */
.les-subdir{margin:10px 0 0;background:#fff;border:1px solid #e7eef0;border-left:3px solid #16B8A6;border-radius:12px;overflow:hidden;box-shadow:0 2px 8px rgba(22,184,166,.06)}
.les-subdir-h{font-size:13.5px;font-weight:700;color:#23302c;padding:11px 13px;cursor:pointer;display:flex;align-items:center;gap:8px;user-select:none;background:linear-gradient(90deg,rgba(22,184,166,.07),rgba(22,184,166,.01))}
.les-fold{display:inline-block;transition:transform .18s;color:#16B8A6;font-size:11px;flex:none}
.les-subdir.open .les-fold{transform:rotate(90deg)}
.les-subdir-h .cnt{margin-left:auto;font-size:11.5px;font-weight:700;color:#0e8f7e;background:rgba(22,184,166,.14);border-radius:999px;padding:2px 9px}
.les-subdir-b{display:none;padding:4px 12px 12px}
.les-subdir.open .les-subdir-b{display:block}
.les-subdir-b .les-subdir{margin-left:8px;border-left-color:#7fd3c8}
.les-subdir-b .les-list{padding:2px 0}
.cs-les{display:flex;align-items:center;gap:10px;padding:9px 12px;border-top:1px dashed #EEF1F5}
.cs-les:first-child{border-top:0}
.cs-no{color:var(--muted);font-size:12.5px;width:22px;text-align:center;flex:0 0 auto;font-variant-numeric:tabular-nums}
.cs-t{flex:1;min-width:0;font-size:14px;color:var(--ink)}
.cs-free{font-size:11px;color:#B8740A;background:#FFF4E0;border:1px solid #F4DCB0;border-radius:6px;padding:1px 6px;flex:0 0 auto}
.cs-dur{font-size:12.5px;color:var(--muted);flex:0 0 auto;font-variant-numeric:tabular-nums}
.cs-play{margin-left:auto;flex:0 0 auto;color:#fff;background:var(--accent);border-radius:8px;padding:6px 14px;font-size:13px;font-weight:700;text-decoration:none;white-space:nowrap}
.cs-play:hover{filter:brightness(.95)}
.cs-novid{margin-left:auto;font-size:12px;color:var(--muted)}
.cs-lock{margin-left:auto;font-size:12.5px;color:#9aa6b6}
/* 直播课课时行 */
.cs-les-live{background:linear-gradient(90deg,#FFF5F5,#FFF)}
.cs-live-badge{font-size:11px;color:#E03131;background:#FFE3E3;border:1px solid #FFC9C9;border-radius:6px;padding:1px 7px;flex:0 0 auto;font-weight:700;white-space:nowrap}
.cs-enter{margin-left:auto;flex:0 0 auto;color:#fff;background:#E03131;border-radius:8px;padding:6px 16px;font-size:13px;font-weight:700;text-decoration:none;white-space:nowrap}
.cs-enter:hover{filter:brightness(.95)}
.cs-ended{margin-left:auto;font-size:12.5px;color:#9aa6b6}
/* 个人中心「我的课程」课程卡片 */
.ac-course{border:1px solid var(--line);border-radius:12px;background:#fff;margin:12px 0;overflow:hidden}
.ac-course-h{display:flex;align-items:center;gap:10px;padding:13px 16px;background:#FBFCFE;border-bottom:1px solid var(--line);font-weight:700;font-size:15px}
.ac-course-h b{flex:1;min-width:0}
.ac-opt{font-size:12px;color:var(--accent);background:#EAF2FF;border:1px solid #D6E4FB;border-radius:6px;padding:2px 8px;font-weight:600}
.ac-course-m{padding:8px 16px;font-size:12.5px;color:var(--muted);border-bottom:1px solid #F2F4F8}
/* ===== 我的课程 · 双栏主从（方案 C）===== */
.mc{display:flex;gap:14px;align-items:flex-start;margin-top:6px}
.mc-list{width:212px;flex:0 0 auto;display:flex;flex-direction:column;gap:9px;max-height:660px;overflow:auto;padding-right:2px}
.mc-item{border:1px solid var(--line);border-radius:12px;padding:11px 13px;background:#fff;cursor:pointer;transition:border-color .15s,background .15s}
.mc-item:hover{border-color:var(--brand-2)}
.mc-item.on{border-color:var(--brand);background:rgba(19,135,192,.07)}
.mc-item .mc-in{display:flex;align-items:center;gap:6px;min-width:0}
.mc-item .mc-in b{font-size:13.5px;font-weight:700;line-height:1.4;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mc-item .mc-im{font-size:11.5px;color:var(--muted);margin-top:5px}
.mc-detail{flex:1;min-width:0}
/* 桌面端：右栏章节两列，进一步压低高度 */
@media (min-width:768px){
.mc-detail .cs-cat{display:inline-block;width:calc(50% - 9px);margin:10px 18px 10px 0;vertical-align:top}
.mc-detail .cs-cat:nth-of-type(2n){margin-right:0}
}
/* 移动端：左栏转为顶部横滑条 */
@media (max-width:767px){
.mc{flex-direction:column;gap:10px}
.mc-list{width:100%;flex-direction:row;max-height:none;overflow-x:auto;padding-bottom:4px}
.mc-item{flex:0 0 auto;min-width:152px}
}
/* ===== 顶部导航：登录态账号下拉 ===== */
.acc-wrap{position:relative;display:inline-flex}
.acc-btn{display:inline-flex;align-items:center;gap:6px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:4px 12px 4px 5px;cursor:pointer;font-size:13px;color:var(--ink);line-height:1;transition:border-color .15s,box-shadow .15s}
.acc-btn:hover{border-color:var(--brand);box-shadow:0 2px 10px rgba(16,32,56,.08)}
.acc-avatar{width:24px;height:24px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;flex:0 0 auto}
.acc-name{font-weight:600;max-width:72px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.acc-phone{color:var(--muted);font-size:12px;font-variant-numeric:tabular-nums}
.acc-btn .caret{font-size:10px;color:var(--muted)}
.acc-menu{position:absolute;right:0;top:calc(100% + 8px);background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow-lg);min-width:168px;padding:6px;display:none;flex-direction:column;z-index:90}
.acc-menu.show{display:flex}
.acc-menu a,.acc-menu button{display:flex;align-items:center;gap:8px;text-align:left;padding:10px 12px;border-radius:8px;color:var(--ink);background:none;border:none;width:100%;font-size:14px;cursor:pointer}
.acc-menu a:hover,.acc-menu button:hover{background:var(--bg)}
/* ===== 登录 / 注册 统一弹窗 tab ===== */
.auth-tabs{display:flex;gap:8px;margin-bottom:18px}
.auth-tab{flex:1;padding:10px 0;border:1px solid var(--line);background:#fff;border-radius:10px;font-weight:700;font-size:14px;cursor:pointer;color:var(--muted)}
.auth-tab.on{background:var(--accent);color:#fff;border-color:var(--accent)}
.auth-pane{display:block}
.auth-pane .field{margin-bottom:14px}
/* ===== 计算器 · 进制页标注 ===== */
.calc-p-note{font-size:11px;opacity:.68;font-weight:400;margin-left:2px}
.calc-op-note{font-size:11px;opacity:.68;font-weight:400;line-height:1.5;margin-top:1px}
/* ==================================================================
影院巨屏式试听（方案 A）：左侧大屏播放器 + 右侧目录（目录在播放器右边）
默认隐藏，仅后台「首页排版」开启后显示；此处只管样式，不影响其它首页模块
================================================================== */
.cinema-sec{background:linear-gradient(180deg,#0B2C43,#061321);padding:56px 0;position:relative;overflow:hidden}
.cinema-sec:before{content:"";position:absolute;inset:0;background:radial-gradient(900px 380px at 50% -60px,rgba(19,135,192,.45),transparent 70%);pointer-events:none}
.cinema-sec .wrap{position:relative}
.cinema-head{margin-bottom:26px}
.cinema-head .eyebrow{color:#FFB98A}
.cinema-head h2{color:#fff}
.cinema-head h2 span{color:#FFB98A}
.cinema-head p{color:#A9C6DA}
/* 大屏 + 目录：左播放器、右目录（符合「目录改到显示屏播放器右边」） */
.cinema-stage{display:flex;gap:28px;align-items:flex-start}
.cinema-left{flex:1 1 58%;min-width:0}
.cinema-dir{flex:0 0 360px;width:360px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
border-radius:14px;padding:16px;display:flex;flex-direction:column;max-height:520px}
/* 显示器外壳 */
.cinema-monitor{max-width:720px;margin:0 auto}
.cinema-screen{position:relative;background:#000;border-radius:14px;padding:12px;
box-shadow:0 0 0 10px #10161d,0 0 0 12px #232c36,0 30px 60px rgba(0,0,0,.55),inset 0 0 60px rgba(19,135,192,.12)}
.cinema-viewport{position:relative;aspect-ratio:16/9;background:radial-gradient(90% 90% at 30% 20%,#1b4e75,#08131e 70%);
border-radius:8px;overflow:hidden;display:flex;align-items:center;justify-content:center}
.cinema-viewport #cinemaPlayer{position:absolute;inset:0}
.cinema-viewport #cinemaPlayer video{width:100%!important;height:100%!important;object-fit:contain;background:#000}
.cinema-overlay{position:absolute;left:14px;right:14px;bottom:12px;display:flex;align-items:center;gap:10px;pointer-events:none;z-index:2}
.cinema-dot{color:#8FE3C4;font-size:12px;background:rgba(0,0,0,.4);padding:4px 10px;border-radius:20px;white-space:nowrap}
.cinema-cap{color:#fff;font-size:13px;background:rgba(0,0,0,.45);padding:5px 12px;border-radius:20px;backdrop-filter:blur(4px);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.cinema-play{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:78px;height:78px;border-radius:50%;
background:rgba(255,255,255,.94);color:var(--brand-2);display:flex;align-items:center;justify-content:center;font-size:26px;
cursor:pointer;box-shadow:0 10px 30px rgba(0,0,0,.4);z-index:3;border:none}
.cinema-play:hover{background:#fff}
.cinema-viewport.cinema-empty .cinema-cap{background:rgba(0,0,0,.4)}
.cinema-stand{width:120px;height:22px;margin:0 auto;background:linear-gradient(#2a343f,#182029);border-radius:0 0 8px 8px}
.cinema-base{width:260px;height:10px;margin:0 auto;background:linear-gradient(#2a343f,#182029);border-radius:0 0 14px 14px;box-shadow:0 10px 24px rgba(0,0,0,.28)}
.cinema-now{text-align:center;color:#fff;font-size:15px;font-weight:700;margin:18px auto 0;max-width:720px}
.cinema-now small{display:block;color:#9FC4DC;font-weight:400;font-size:12.5px}
/* 右侧目录 */
.cinema-dir-hd{display:flex;align-items:baseline;justify-content:space-between;gap:8px;margin-bottom:10px}
.cinema-dir-hd b{color:#fff;font-size:15px}
.cinema-dir-tip{color:#9FC4DC;font-size:11.5px;text-align:right}
.cinema-dir-cats{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:10px}
.cinema-dir-cats .chip{border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.08);color:#D9E8F3;padding:4px 12px;border-radius:20px;font-size:12.5px}
.cinema-dir-cats .chip.on{background:#fff;color:var(--brand-2);font-weight:700}
.cinema-dir-list{overflow-y:auto;flex:1;padding-right:4px;margin-right:-4px}
.cinema-dir-list::-webkit-scrollbar{width:8px}
.cinema-dir-list::-webkit-scrollbar-thumb{background:rgba(255,255,255,.22);border-radius:8px}
.c-dir-grp{color:#FFB98A;font-size:12px;font-weight:700;letter-spacing:1px;margin:12px 2px 6px}
.c-dir-grp:first-child{margin-top:0}
.c-dir-it{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:10px;cursor:pointer;
border:1px solid transparent;transition:.15s;background:rgba(255,255,255,.04)}
.c-dir-it:hover{background:rgba(255,255,255,.1)}
.c-dir-it.on{border-color:rgba(255,255,255,.55);background:rgba(255,255,255,.16)}
.c-dir-dot{width:8px;height:8px;border-radius:50%;background:#5C7C95;flex:0 0 auto}
.c-dir-it.on .c-dir-dot{background:#8FE3C4;box-shadow:0 0 8px #8FE3C4}
.c-dir-t{flex:1;min-width:0;color:#EAF3FA;font-size:13.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.c-dir-m{color:#9FC4DC;font-size:11.5px;white-space:nowrap;flex:0 0 auto}
.cinema-dir-list .empty{color:#9FC4DC;font-size:13px;text-align:center}
@media(max-width:900px){
.cinema-stage{flex-direction:column}
.cinema-left,.cinema-dir{flex:1 1 auto;width:100%}
.cinema-dir{max-height:none}
.cinema-monitor{max-width:none}
}
/* ================= 课程详情面板重设计（方案C首屏 + 方案B后续） ================= */
.pd2-sec{margin-bottom:34px}
.pd2-h3{font-size:17px;font-weight:800;margin-bottom:14px}
.pd2-points{font-size:14.5px;color:var(--ink-2)}
.pd2-empty{border:1px dashed var(--line);border-radius:12px;padding:26px 18px;text-align:center;
color:var(--muted);font-size:13.5px;background:#FCFAF5}
/* 板块小标题（图标 + 中英文） */
.pd2-sec-h{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.pd2-sec-h::after{content:"";flex:1;height:1px;background:linear-gradient(90deg,var(--line),transparent)}
.pd2-sec-ic{width:34px;height:34px;border-radius:9px;display:flex;align-items:center;justify-content:center;
font-size:17px;color:#fff;flex-shrink:0}
.pd2-sec-h h3{font-size:17px;font-weight:800;line-height:1.3}
.pd2-sec-h i{font-style:normal;display:block;font-size:11px;color:var(--muted);letter-spacing:1.5px;text-transform:uppercase;font-weight:600}
/* ① 课程服务介绍 · 深色数据 Hero（方案C） */
.pd2-hero{background:linear-gradient(135deg,#0B2E42 0%,#0E4A66 45%,#1387c0 110%);border-radius:18px;
padding:30px 28px 26px;color:#fff;position:relative;overflow:hidden}
.pd2-hero::before{content:"";position:absolute;right:-70px;top:-70px;width:230px;height:230px;border-radius:50%;
background:radial-gradient(circle,rgba(58,167,221,.35),transparent 70%)}
.pd2-hero::after{content:"";position:absolute;left:30%;bottom:-110px;width:260px;height:260px;border-radius:50%;
background:radial-gradient(circle,rgba(244,82,13,.16),transparent 70%)}
.pd2-hero .dh-t{font-size:19px;font-weight:800;margin-bottom:4px;position:relative}
.pd2-hero .dh-s{font-size:12.5px;opacity:.75;margin-bottom:20px;position:relative}
.pd2-hero .dh-desc{font-size:13.5px;line-height:1.9;opacity:.92;max-width:760px;position:relative;margin-bottom:22px;white-space:pre-line}
.pd2-hero .dh-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;position:relative}
.pd2-hero .dh-stat{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:13px;
padding:16px 12px;text-align:center;backdrop-filter:blur(4px);transition:.3s}
.pd2-hero .dh-stat:hover{background:rgba(255,255,255,.13);transform:translateY(-3px)}
.pd2-hero .dh-stat .n{font-size:31px;font-weight:800;font-family:Georgia,serif;line-height:1.1;
background:linear-gradient(180deg,#fff,#9FD6F2);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.pd2-hero .dh-stat .n small{font-size:14px;font-weight:700;-webkit-text-fill-color:#9FD6F2;margin-left:2px}
.pd2-hero .dh-stat .l{font-size:12px;opacity:.75;margin-top:4px}
.pd2-hero .dh-stat .bar{height:3px;border-radius:3px;background:rgba(255,255,255,.15);margin-top:10px;overflow:hidden}
.pd2-hero .dh-stat .bar i{display:block;height:100%;width:0;border-radius:3px;background:linear-gradient(90deg,#FFD84D,var(--accent));
transition:width 1.2s cubic-bezier(.4,0,.2,1) .3s}
.pd2-hero .dh-stat.in .bar i{width:var(--w)}
/* ② 学习流程（方案B 四步） */
.pd2-flow{position:relative}
.pd2-flow::before{content:"";position:absolute;left:50%;top:26px;bottom:26px;width:2px;
background:linear-gradient(180deg,var(--line),#D9ECF7,var(--line));transform:translateX(-50%)}
.pd2-flow .pd2-step{position:relative;z-index:1;display:grid;grid-template-columns:1fr 84px 1fr;align-items:center;
gap:0;margin-bottom:18px}
.pd2-flow .pd2-step:last-child{margin-bottom:0}
.pd2-flow .pd2-dot{grid-column:2;width:60px;height:60px;border-radius:50%;background:#fff;border:3px solid var(--line);
display:flex;align-items:center;justify-content:center;font-size:25px;margin:0 auto;position:relative;transition:.35s}
.pd2-flow .pd2-step.in .pd2-dot{border-color:var(--brand);box-shadow:0 0 0 6px rgba(19,135,192,.12);transform:scale(1.06)}
.pd2-flow .pd2-no{position:absolute;top:-8px;right:-8px;width:22px;height:22px;border-radius:50%;background:var(--accent);
color:#fff;font-size:11px;font-weight:800;display:flex;align-items:center;justify-content:center}
.pd2-flow .pd2-step h4{font-size:15.5px;font-weight:800;margin-bottom:5px}
.pd2-flow .pd2-step p{font-size:12.5px;color:var(--muted);line-height:1.7}
.pd2-flow .pd2-tags{margin-top:8px;display:flex;gap:5px;flex-wrap:wrap}
.pd2-flow .pd2-tags span{font-size:10.5px;background:#F0F8FC;color:var(--brand-3);border:1px solid #D9ECF7;
padding:1px 8px;border-radius:99px;font-weight:600}
.pd2-flow .pd2-step:nth-child(odd) .pd2-txt{grid-column:1;text-align:right;padding-right:18px}
.pd2-flow .pd2-step:nth-child(odd) .pd2-tags{justify-content:flex-end}
.pd2-flow .pd2-step:nth-child(even) .pd2-txt{grid-column:3;padding-left:18px}
.pd2-flow-intro{margin-top:18px;background:linear-gradient(135deg,#F0F8FC,#FBF7F0);border:1px solid var(--line);
border-radius:12px;padding:16px 20px;font-size:14px;color:var(--ink-2);line-height:1.9}
/* ③ 资料双栏（方案B） */
.pd2-matsplit{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.pd2-matpanel{border-radius:14px;overflow:hidden;border:1px solid var(--line);background:#fff}
.pd2-matpanel .pd2-mphd{padding:15px 18px;color:#fff;display:flex;align-items:center;gap:10px}
.pd2-matpanel.paper .pd2-mphd{background:linear-gradient(135deg,#8A6116,#C99B4A)}
.pd2-matpanel.elec .pd2-mphd{background:linear-gradient(135deg,var(--brand-3),var(--brand))}
.pd2-matpanel .pd2-mpt{font-size:15.5px;font-weight:800}
.pd2-matpanel .pd2-mps{font-size:11.5px;opacity:.85;margin-left:auto}
.pd2-matpanel .pd2-mpbd{padding:14px 16px}
.pd2-matline{display:flex;align-items:center;gap:11px;padding:10px 4px;border-bottom:1px dashed #EFE7D6}
.pd2-matline:last-child{border-bottom:none}
.pd2-matline .pd2-mlno{width:24px;height:24px;border-radius:7px;flex-shrink:0;display:flex;align-items:center;justify-content:center;
font-size:12px;font-weight:800;font-family:Georgia,serif}
.pd2-matpanel.paper .pd2-mlno{background:#F6E7CE;color:#8A6116}
.pd2-matpanel.elec .pd2-mlno{background:#D9ECF7;color:var(--brand-3)}
.pd2-matline .pd2-mlb{flex:1;min-width:0}
.pd2-matline .pd2-mlb b{font-size:13.5px;display:block}
.pd2-matline .pd2-mlb span{font-size:12px;color:var(--muted)}
.pd2-matline .pd2-mltag{font-size:11px;font-weight:700;padding:2px 9px;border-radius:99px;flex-shrink:0}
.pd2-matpanel.paper .pd2-mltag{color:#8A6116;background:#F6E7CE}
.pd2-matpanel.elec .pd2-mltag{color:var(--brand-3);background:#D9ECF7}
.pd2-matpanel .pd2-mptip{font-size:12px;color:var(--muted);padding:10px 18px 14px;display:flex;gap:6px;align-items:flex-start}
.pd2-matnone{padding:18px 4px;text-align:center;color:var(--muted);font-size:12.5px}
/* ④ 更多服务（方案B） */
.pd2-svc{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.pd2-svcitem{display:flex;gap:13px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:15px 16px;
transition:.25s;position:relative;overflow:hidden}
.pd2-svcitem::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:linear-gradient(180deg,var(--brand),var(--accent));
opacity:0;transition:.25s}
.pd2-svcitem:hover{border-color:#cfe8f4;box-shadow:0 8px 20px rgba(22,32,44,.08);transform:translateX(3px)}
.pd2-svcitem:hover::before{opacity:1}
.pd2-svcitem .pd2-sicic{width:42px;height:42px;border-radius:11px;flex-shrink:0;display:flex;align-items:center;justify-content:center;
font-size:20px;background:linear-gradient(135deg,#F0F8FC,#E4F2FA)}
.pd2-svcitem .pd2-sicb{flex:1}
.pd2-svcitem .pd2-sicb b{font-size:14px;display:block;margin-bottom:2px}
.pd2-svcitem .pd2-sicb p{font-size:12.5px;color:var(--muted);line-height:1.65}
/* ⑤ 班次对比（方案B VS） */
.pd2-vsbox{display:grid;grid-template-columns:1fr auto 1fr;gap:0;align-items:stretch}
.pd2-vscard{border-radius:16px;padding:22px 20px;position:relative;transition:.3s;background:#fff;display:flex;flex-direction:column}
.pd2-vscard:hover{transform:translateY(-4px)}
.pd2-vscard.c1{background:linear-gradient(180deg,#F0F8FC,#fff);border:2px solid var(--brand)}
.pd2-vscard.c2{background:linear-gradient(180deg,#FAFAF6,#fff);border:2px solid #E4DCC8}
.pd2-vscard .pd2-rec{position:absolute;top:-11px;left:50%;transform:translateX(-50%);background:linear-gradient(90deg,var(--accent),#FF8340);
color:#fff;font-size:11px;font-weight:800;padding:3px 14px;border-radius:99px;box-shadow:0 4px 10px rgba(244,82,13,.35);white-space:nowrap}
.pd2-vscard h4{font-size:17px;font-weight:800;text-align:center;margin:6px 0 2px}
.pd2-vscard .pd2-vssub{font-size:12px;color:var(--muted);text-align:center;margin-bottom:14px}
.pd2-vscard .pd2-vsprice{text-align:center;margin-bottom:16px}
.pd2-vscard .pd2-vsprice .p{font-size:30px;font-weight:800;color:var(--accent);font-family:Georgia,serif}
.pd2-vscard .pd2-vsprice .o{font-size:12px;color:var(--muted);text-decoration:line-through;margin-left:8px}
.pd2-vsrows{display:flex;flex-direction:column;gap:8px;flex:1}
.pd2-vr{display:flex;gap:8px;font-size:12.8px;align-items:flex-start;padding:8px 10px;background:#fff;
border:1px solid var(--line);border-radius:9px}
.pd2-vscard.c2 .pd2-vr{background:#FCFAF3}
.pd2-vr i{font-style:normal;flex-shrink:0;color:var(--ok)}
.pd2-vsbtn{margin-top:16px;text-align:center}
.pd2-vsbtn .btn{width:100%;box-sizing:border-box}
.pd2-vsbadge{align-self:center;width:58px;height:58px;border-radius:50%;background:linear-gradient(135deg,var(--ink),#3A4654);
color:#FFD84D;font-weight:800;font-size:19px;font-style:italic;display:flex;align-items:center;justify-content:center;
font-family:Georgia,serif;margin:0 -12px;z-index:2;box-shadow:0 6px 18px rgba(22,32,44,.3);
border:3px solid #fff;animation:vsPulse 2.4s infinite}
@keyframes vsPulse{0%,100%{transform:scale(1)}50%{transform:scale(1.08)}}
.pd2-vsnote{grid-column:1/-1;text-align:center;font-size:12.5px;color:var(--muted);margin-top:14px;
background:#FCFAF5;border:1px dashed var(--line);border-radius:9px;padding:9px}
/* 进场动画 */
.fx{opacity:0;transform:translateY(20px);transition:opacity .55s ease,transform .55s ease}
.fx.in{opacity:1;transform:none}
.fx-d1{transition-delay:.07s}.fx-d2{transition-delay:.14s}.fx-d3{transition-delay:.21s}.fx-d4{transition-delay:.28s}
@media(max-width:900px){
.pd2-hero .dh-stats{grid-template-columns:repeat(2,1fr)}
.pd2-svc{grid-template-columns:1fr}
.pd2-flow .pd2-step{grid-template-columns:64px 1fr;gap:12px}
.pd2-flow::before{display:none}
.pd2-flow .pd2-dot{grid-column:1;grid-row:1}
.pd2-flow .pd2-step:nth-child(odd) .pd2-txt,.pd2-flow .pd2-step:nth-child(even) .pd2-txt{grid-column:2;grid-row:1;text-align:left;padding:0}
.pd2-flow .pd2-step:nth-child(odd) .pd2-tags{justify-content:flex-start}
}
@media(max-width:680px){
.pd2-matsplit{grid-template-columns:1fr}
.pd2-vsbox{grid-template-columns:1fr;gap:18px}
.pd2-vsbadge{margin:-9px auto}
.pd2-hero{padding:22px 18px 20px}
}
/* 答题卡收藏五角星图例 & 答题数据统计 */
.qz-legend .lg-star{color:#D97706;font-weight:800;font-style:normal;font-size:13px;width:auto;background:none;border:none}
.qz-side-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin:0 0 10px}
.qz-stat-item{border:1px solid var(--line);border-radius:8px;background:#fff;padding:6px 4px;text-align:center;display:flex;flex-direction:column;gap:1px}
.qz-stat-item b{font-size:16px;line-height:1.1}
.qz-stat-item span{font-size:11px;color:#7A8A99}
.qz-stat-item.s-ok b{color:#2E9E6B}
.qz-stat-item.s-no b{color:#C0392B}
.qz-stat-item.s-un b{color:#98A6B3}
.qz-stat-item.s-fav b{color:#D97706}
/* 题目编辑器：所见即所得富文本编辑框 */
.qz-rt{width:100%;box-sizing:border-box;padding:10px 12px;border:1px solid var(--line);border-radius:8px;
background:#fff;font-size:13.5px;line-height:1.65;overflow:auto;outline:none;resize:vertical}
.qz-rt:focus{border-color:var(--brand);box-shadow:0 0 0 2px rgba(46,120,220,.12)}
.qz-rt img{max-width:100%;border-radius:6px;margin:6px auto;display:block}
/* 题干/选项图片按「是否独行」动态判定：独占一段则居中，与文字同行则紧跟文字 */
.qz-rt img.qz-img-block{display:block;margin:6px auto;vertical-align:baseline}
.qz-rt img.qz-img-inline{display:inline-block;vertical-align:middle;margin:2px 4px}
.qz-rt table{border-collapse:collapse;margin:6px auto;max-width:100%}
.qz-rt td,.qz-rt th{border:1px solid var(--line);padding:4px 10px;text-align:center}
.qz-rt .qz-tex{cursor:pointer}
.qz-rt .katex{font-size:1.05em}
/* 做题时间按钮 & 答题卡五角星增强 */
.qz-timer-mini{border:1px solid var(--line);background:#fff;border-radius:8px;padding:7px 11px;font-size:12.5px;font-weight:700;color:#33475B;cursor:pointer;white-space:nowrap;font-variant-numeric:tabular-nums}
.qz-timer-mini:hover{border-color:var(--brand);color:var(--brand)}
.qz-cell.ok i,.qz-cell.no i{color:#fff;text-shadow:0 1px 3px rgba(0,0,0,.55);font-size:13px}
.qz-cell i{top:-7px;right:-5px;font-size:12px}
/* 做题时间/倒计时悬浮面板（与目录面板同款定位） */
#zTimerFloat{position:fixed;z-index:300;width:280px;max-width:calc(100vw - 20px);max-height:min(72vh,640px);
background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;
box-shadow:0 16px 48px rgba(10,30,60,.26);display:flex;flex-direction:column}
/* 答题数据点击筛选态 */
.qz-stat-item{cursor:pointer;transition:box-shadow .15s}
.qz-stat-item:hover{border-color:var(--brand)}
.qz-stat-item.on{outline:2.5px solid var(--brand);outline-offset:1px}
.qz-cell.qz-filter-bar{grid-column:1/-1;height:30px;background:#FFF8E8;border-style:dashed;color:#8A6D1C;font-size:12.5px}
/* 导入预览：缺答案 / 缺解析重点标识与定位 */
.imp-stat-chip{color:#fff;font-size:12.5px;font-weight:700;border-radius:12px;padding:3px 11px;cursor:pointer;white-space:nowrap}
.imp-stat-chip:hover{filter:brightness(1.1)}
@keyframes qzFlash{0%{box-shadow:0 0 0 3px #F2B65A}70%{box-shadow:0 0 0 3px #F2B65A}100%{box-shadow:none}}
.imp-q.qz-flash{box-shadow:0 0 0 3px #F2B65A;border-color:#C9781B}
/* 编辑器图片选中与缩放手柄 */
.qz-rt img{cursor:pointer}
.qz-rt img.qz-img-sel{outline:2.5px solid #1B6FD6;outline-offset:2px}
.qz-img-handle{position:absolute;z-index:400;width:14px;height:14px;border-radius:50%;
background:#1B6FD6;border:2.5px solid #fff;box-shadow:0 1px 5px rgba(0,0,0,.35);cursor:nwse-resize}
.qz-rt img::selection{background:transparent}
/* ===== 刷题页：题图灯箱（站内放大查看，禁右键另存/拖拽/长按保存）+ 题目解析禁复制 ===== */
/* 题干/选项/解析文本禁选区（copy/cut 由 JS 二次拦截） */
.qz-stem,.qz-opt-t,.qz-exp-t{user-select:none;-webkit-user-select:none;-moz-user-select:none}
/* 题图：禁 iOS 长按另存菜单、禁拖拽 */
.qz-stem img,.qz-opt-t img,.qz-exp-t img,.qz-card img{
-webkit-touch-callout:none;-webkit-user-drag:none;user-select:none;user-drag:none}
.z-lightbox{position:fixed;inset:0;z-index:400;display:none;align-items:center;justify-content:center;
background:rgba(8,18,32,.88);backdrop-filter:blur(2px);padding:28px;cursor:zoom-out}
.z-lightbox.show{display:flex}
/* 图片包裹层：紧贴图片尺寸，水印层 absolute inset:0 只覆盖图片本体 */
.z-lb-fig{position:relative;display:inline-block;margin:0;line-height:0;max-width:96vw;max-height:88vh}
.z-lb-fig img{max-width:96vw;max-height:88vh;display:block;border-radius:6px;background:#fff;
box-shadow:0 12px 48px rgba(0,0,0,.55);
user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;
pointer-events:none} /* 点击穿透到遮罩（任意处关闭），同时杜绝右键/长按落在图上 */
/* 放大图水印：与题目卡同源，平铺在图片上；无配置时由 JS 置 display:none 隐藏
（注意：规则里不能写 display:none，否则 JS 用 style.display="" 恢复时会回落到隐藏） */
.z-lb-wm{position:absolute;inset:0;pointer-events:none;z-index:2;background-repeat:repeat;border-radius:6px}
.z-lightbox-x{position:absolute;top:12px;right:22px;color:rgba(255,255,255,.85);font-size:32px;line-height:1;cursor:pointer}
.z-lightbox-x:hover{color:#fff}
.z-lightbox-tip{position:absolute;bottom:14px;left:0;right:0;text-align:center;color:rgba(255,255,255,.55);font-size:12.5px;pointer-events:none}
/* ══ 课程到期：管理端「已过期」红标 + 学员端到期弹窗 + 课程卡到期标 ══ */
.mini.expired{background:rgba(229,57,53,.12);color:#e53935;border:1px solid rgba(229,57,53,.35);font-weight:600}
.mc1-exp{display:inline-block;margin-left:6px;font-size:11px;font-weight:700;color:#fff;background:#e53935;border-radius:999px;padding:1px 8px;vertical-align:middle}
/* 学员端「课程已到期」弹窗（清新风，与播放器一致） */
.exp-mask{position:fixed;inset:0;background:rgba(15,30,28,.45);display:none;align-items:center;justify-content:center;z-index:9999;padding:20px}
.exp-mask.show{display:flex}
.exp-box{position:relative;width:min(420px,100%);background:#fff;border-radius:18px;padding:30px 26px 22px;text-align:center;box-shadow:0 18px 50px rgba(16,40,35,.18)}
.exp-x{position:absolute;top:10px;right:14px;border:none;background:none;font-size:22px;line-height:1;color:#9aa6a1;cursor:pointer}
.exp-x:hover{color:#5d6b66}
.exp-ic{font-size:34px;margin-bottom:4px}
.exp-t{margin:0 0 10px;font-size:19px;color:#1f2d2a}
.exp-msg{margin:0 0 18px;font-size:14px;line-height:1.7;color:#5d6b66}
.exp-msg b{color:#16B8A6}
.exp-acts{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
/* ══════════════ 视频打点笔记 + 思维导图（画布自由拖拽） ══════════════ */
/* 关键修复：.tfm-main 之前没有确定高度（align-items:stretch 只是「拉伸兄弟」，
不会给 .tfm-right 一个可参与 flex:1 计算的高度），导致 .vn-canvas-wrap{flex:1}
塌陷成 2px —— 导图节点全部溢出到画布外，看起来就是「节点/适配都用不了」。
这里把左列和右列各自定高，画布有了确定的可分配高度，节点/连线/适配全部恢复。 */
.ct-fresh .tfm-main{align-items:stretch;height:min(600px,78vh)}
.ct-fresh .tfm-left{display:flex;flex-direction:column;justify-content:flex-start;min-height:0}
.ct-fresh .tfm-left video{width:100%;flex:1 1 auto;min-height:0;height:auto;max-height:100%;object-fit:contain;background:#000}
.tfm-right{display:flex;flex-direction:column;min-width:0;height:100%}
.vn-tabs{display:flex;gap:6px;padding:0 0 8px;flex:none}
.vn-tabs button{flex:1;padding:7px 4px;border:1px solid #E3EAE8;border-radius:9px;background:#fff;color:#5d6b66;font-size:12.5px;cursor:pointer;transition:.15s;white-space:nowrap}
.vn-tabs button:hover{border-color:rgba(22,184,166,.45);color:#16B8A6}
.vn-tabs button.on{background:#16B8A6;border-color:#16B8A6;color:#fff;font-weight:700}
.vn-pane{flex:1;min-height:0;display:flex;flex-direction:column}
/* 笔记面板 */
.vn-note-head{display:flex;gap:6px;flex:none;margin-bottom:6px}
.vn-input{flex:1;min-width:0;padding:8px 10px;border:1px solid #E3EAE8;border-radius:9px;font-size:13px;outline:none;background:#fff}
.vn-input:focus{border-color:#16B8A6;box-shadow:0 0 0 3px rgba(22,184,166,.12)}
.vn-add{flex:none;padding:8px 14px;border:0;border-radius:9px;background:#16B8A6;color:#fff;font-size:13px;font-weight:700;cursor:pointer}
.vn-add:hover{background:#12a494}
.vn-hint{flex:none;font-size:11.5px;color:#93a5a0;padding:0 2px 8px}
.vn-list{flex:1;min-height:0;overflow-y:auto;padding-right:2px}
.vn-item{display:flex;gap:8px;align-items:flex-start;padding:9px 10px;border:1px solid #EDF3F1;border-radius:10px;margin-bottom:7px;background:#fff;transition:.15s}
.vn-item:hover{border-color:#cfe9e4;box-shadow:0 2px 8px rgba(22,184,166,.07)}
.vn-t{flex:none;padding:2px 7px;border:1px solid #cfe9e4;border-radius:7px;background:#f2fbf9;color:#0f9b8a;font-size:11.5px;font-weight:700;cursor:pointer;font-family:ui-monospace,Menlo,Consolas,monospace}
.vn-t:hover{background:#16B8A6;color:#fff;border-color:#16B8A6}
.vn-tx{flex:1;min-width:0;font-size:13px;line-height:1.65;color:#2b3a36;outline:none;word-break:break-word}
.vn-tx:focus{background:#f7fdfc;border-radius:6px;box-shadow:0 0 0 2px rgba(22,184,166,.15)}
.vn-x{flex:none;border:0;background:transparent;color:#c3d0cc;font-size:13px;cursor:pointer;padding:2px 4px;line-height:1}
.vn-x:hover{color:#e2705a}
.vn-empty{padding:26px 14px;text-align:center;color:#93a5a0;font-size:12.5px;line-height:1.7}
/* 进度条上的笔记标记 */
.zg-prog{position:relative}
.vn-mark{position:absolute;top:50%;width:3px;height:9px;margin-left:-1.5px;transform:translateY(-50%);background:#FFC24B;border-radius:2px;cursor:pointer;z-index:3;box-shadow:0 0 0 1px rgba(0,0,0,.18)}
.vn-mark:hover{background:#FF9F1C;height:13px}
/* 导图面板 */
.vn-map-bar{flex:none;display:flex;gap:6px;align-items:center;margin-bottom:8px;flex-wrap:wrap}
.vn-map-bar button{padding:6px 11px;border:1px solid #E3EAE8;border-radius:8px;background:#fff;color:#3d4d49;font-size:12.5px;cursor:pointer;transition:.15s}
.vn-map-bar button:hover{border-color:#16B8A6;color:#16B8A6}
.vn-map-bar .vn-exp{margin-left:auto;border-color:#16B8A6;background:#16B8A6;color:#fff;font-weight:700}
.vn-map-bar .vn-exp:hover{background:#12a494;color:#fff}
.vn-map-tip{font-size:11px;color:#a3b2ae;flex:1 1 100%;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;margin-top:2px}
.vn-canvas-wrap{flex:1;min-height:0;position:relative;overflow:hidden;border:1px solid #E8F1EF;border-radius:12px;background-color:#fbfefd;background-image:radial-gradient(#dcece8 1px,transparent 1px);background-size:18px 18px;cursor:default;outline:none}
.vn-canvas-wrap:focus{box-shadow:0 0 0 3px rgba(22,184,166,.14);border-color:#9BD9D0}
.vn-canvas-wrap.grabbing{cursor:grabbing}
.vn-canvas{position:absolute;left:0;top:0;transform-origin:0 0;will-change:transform}
.vn-links{position:absolute;left:0;top:0;overflow:visible;pointer-events:none;z-index:1}
.vn-nodes{position:absolute;left:0;top:0;z-index:2}
.vn-node{position:absolute;min-width:110px;max-width:210px;padding:8px 24px 8px 12px;border:1.5px solid #9BD9D0;border-radius:10px;background:#fff;box-shadow:0 3px 10px rgba(22,184,166,.1);cursor:default;user-select:none;transition:box-shadow .15s,border-color .15s}
.vn-node.on{border-color:#0E8F7E;box-shadow:0 0 0 3px rgba(22,184,166,.22),0 6px 16px rgba(22,184,166,.18)}
.vn-node.dragging{cursor:grabbing;box-shadow:0 8px 22px rgba(22,184,166,.24);z-index:9}
.vn-node-tx{font-size:12.5px;line-height:1.55;color:#24332f;outline:none;word-break:break-word;min-height:17px;cursor:text}
.vn-node-tx:focus{background:#f4fcfb;border-radius:5px}
.vn-node-x{position:absolute;right:3px;top:3px;border:0;background:transparent;color:#cfdcd8;font-size:11px;cursor:pointer;line-height:1;padding:2px 3px}
.vn-node-x:hover{color:#e2705a}
.vn-port{position:absolute;right:-6px;top:50%;width:11px;height:11px;margin-top:-5.5px;border-radius:50%;background:#fff;border:2px solid #16B8A6;cursor:crosshair;opacity:.5;transition:.15s}
.vn-node:hover .vn-port{opacity:1}
.vn-port:hover{transform:scale(1.25)}
.vn-map-empty{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);text-align:center;color:#93a5a0;font-size:12.5px;line-height:1.9;white-space:nowrap}
.vn-map-empty span{font-size:11.5px;color:#b3c2bd}
.vn-ghost{display:none}
/* 点击「导图 / 笔记」→ 面板扩成半屏大画布，视频靠左保持当前大小（参考 WPS 思维导图布局） */
.ct-fresh .tfm-left,.ct-fresh .tfm-right{transition:flex-basis .28s ease,width .28s ease,max-width .28s ease}
.ct-fresh.vn-wide-open .tfm-box{width:min(1400px,98vw)}
.ct-fresh.vn-wide-open .tfm-main{flex-direction:row;height:min(800px,90vh)}
.ct-fresh.vn-wide-open .tfm-left{flex:0 0 clamp(240px,28vw,360px);max-height:100%}
.ct-fresh.vn-wide-open .tfm-left video{width:100%;height:auto;max-height:100%;object-fit:contain}
.ct-fresh.vn-wide-open .tfm-right{flex:1 1 auto;width:auto;max-width:none;max-height:none;border-left:1px solid #EAF3F0}
/* 手机端：笔记/导图面板高度约束 */
@media(max-width:820px){
.ct-fresh .tfm-main{height:auto}
.ct-fresh .tfm-left video{max-height:52vh}
.ct-fresh .tfm-right{height:auto;max-height:52vh}
.vn-canvas-wrap{min-height:300px}
.tfm-right{max-height:52vh}
.vn-tabs button{font-size:12px;padding:6px 2px}
.vn-node{min-width:88px;max-width:150px}
/* 窄屏导图/笔记：上下布局，面板占主要高度 */
.ct-fresh.vn-wide-open .tfm-main{flex-direction:column;height:auto}
.ct-fresh.vn-wide-open .tfm-left{flex:none;max-height:30vh}
.ct-fresh.vn-wide-open .tfm-right{max-height:62vh;min-height:380px}
}