:root{
  --blue:#3B6CFF; --blue-d:#2A4FD0; --cyan:#1FC8DB;
  --orange:#FF7A45; --orange-d:#F2642C;
  --bg:#F4F6FB; --card:#ffffff; --t1:#1A2233; --t2:#6B7689; --line:#E8ECF3;
  --shadow:0 6px 24px rgba(26,34,51,.08); --shadow-h:0 12px 36px rgba(59,108,255,.18);
  --radius:16px;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--t1);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.wrap{max-width:1200px;margin:0 auto;padding:0 20px}
.grad-text{background:linear-gradient(90deg,var(--blue),var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent}
.btn{display:inline-flex;align-items:center;gap:6px;padding:11px 22px;border-radius:999px;font-size:14px;font-weight:600;cursor:pointer;border:none;transition:.25s}
.btn-primary{background:linear-gradient(90deg,var(--blue),var(--cyan));color:#fff;box-shadow:0 8px 20px rgba(59,108,255,.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-h)}
.btn-ghost{background:#fff;color:var(--blue);border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--blue)}
.btn-orange{background:linear-gradient(90deg,var(--orange),var(--orange-d));color:#fff;box-shadow:0 8px 20px rgba(255,122,69,.3)}
.btn-orange:hover{transform:translateY(-2px)}
.btn-block{width:100%;justify-content:center}

/* header */
header{position:sticky;top:0;z-index:50;backdrop-filter:saturate(180%) blur(12px);background:rgba(255,255,255,.82);border-bottom:1px solid var(--line)}
.hdr{display:flex;align-items:center;gap:18px;height:66px}
.logo{font-size:18px;font-weight:800;letter-spacing:.5px;display:flex;align-items:center;gap:8px;white-space:nowrap;flex-shrink:0}
.logo .logo-icon{width:34px;height:34px;border-radius:10px;object-fit:cover;box-shadow:0 2px 8px rgba(59,108,255,.18)}
.logo .dot{width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--blue),var(--cyan));display:inline-block}
.search{flex:1;max-width:420px;display:flex;align-items:center;background:#fff;border:1px solid var(--line);border-radius:999px;padding:4px 4px 4px 16px;gap:8px}
.search input{border:none;outline:none;flex:1;font-size:14px;background:transparent;color:var(--t1)}
.search svg{flex:none}
.search-btn{flex:none;background:linear-gradient(90deg,var(--blue),var(--cyan));color:#fff;border:none;border-radius:999px;padding:8px 18px;font-size:13px;font-weight:600;cursor:pointer;transition:.2s}
.search-btn:hover{box-shadow:0 4px 12px rgba(59,108,255,.25)}
.hdr-actions{display:flex;align-items:center;gap:14px;margin-left:auto}
.hdr-actions .icon{width:38px;height:38px;border-radius:50%;background:#fff;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:.2s;position:relative}
.hdr-actions .icon:hover{border-color:var(--blue);color:var(--blue)}
.badge-dot{position:absolute;top:-2px;right:-2px;width:9px;height:9px;border-radius:50%;background:var(--orange);border:2px solid #fff}
.wx-login{background:linear-gradient(135deg,#07C160,#0aa84e);color:#fff;padding:9px 16px;border-radius:999px;font-size:13px;font-weight:600;cursor:pointer}
.avatar{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,var(--blue),var(--cyan));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;cursor:pointer}
nav.topnav{display:flex;gap:6px;height:48px;align-items:center;border-top:1px solid var(--line);overflow-x:auto;white-space:nowrap;flex-wrap:nowrap;scrollbar-width:none;-ms-overflow-style:none}
nav.topnav::-webkit-scrollbar{display:none}
nav.topnav a{display:inline-block;padding:8px 16px;border-radius:999px;font-size:14px;color:var(--t2);transition:.2s;white-space:nowrap}
nav.topnav a:hover,nav.topnav a.on{color:var(--blue);background:#EEF3FF}
nav.topnav a.nav-badge{background:linear-gradient(135deg,#FF7A45,#FF5277);color:#fff;font-weight:600;box-shadow:0 4px 12px rgba(255,82,119,.28);transform:translateY(0)}
nav.topnav a.nav-badge:hover{transform:translateY(-2px);box-shadow:0 6px 16px rgba(255,82,119,.38);color:#fff}
.menu-toggle{display:none}

/* hero / sections (首页沿用) */
.hero{margin:24px 0}
.slides{position:relative;height:420px;border-radius:24px;overflow:hidden;box-shadow:var(--shadow)}
.slide{position:absolute;inset:0;opacity:0;transition:opacity .6s;display:flex;align-items:center;padding:0 56px;color:#fff;background-size:cover;background-position:center}
.slide.active{opacity:1}
.slide.s1{background-color:#3B6CFF}
.slide.s2{background-color:#7B5CFF}
.slide.s3{background-color:#FF7A45}
.slide-mask{position:absolute;inset:0;background:linear-gradient(90deg,rgba(20,28,48,.55) 0,rgba(20,28,48,.28) 52%,rgba(20,28,48,.06) 100%);z-index:1}
.slide .txt{position:relative;z-index:2;max-width:540px}
.slide .tag{display:inline-block;background:rgba(255,255,255,.22);padding:5px 14px;border-radius:999px;font-size:13px;margin-bottom:16px;backdrop-filter:blur(4px)}
.slide h1{font-size:38px;line-height:1.2;font-weight:800;margin-bottom:14px;text-shadow:0 2px 12px rgba(0,0,0,.2)}
.slide p{font-size:15px;opacity:.95;margin-bottom:26px;max-width:460px;line-height:1.7}
.slide .promo-card{position:relative;z-index:2;margin-left:auto;width:280px;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.5);border-radius:20px;padding:18px;color:var(--t1);box-shadow:0 20px 40px rgba(0,0,0,.2)}
.slide .promo-card h4{font-size:16px;margin-bottom:8px}
.slide .promo-card .pp{font-size:30px;font-weight:800}
.slide .promo-card .po{text-decoration:line-through;opacity:.7;font-size:14px;margin-left:8px}
.hero-card .hc-thumb{height:120px;border-radius:12px;background-size:cover;background-position:center;margin-bottom:14px}
.hero-card .hc-icon{width:60px;height:60px;border-radius:16px;display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.hero-card .hc-tag{display:inline-block;background:linear-gradient(90deg,var(--blue),var(--cyan));color:#fff;font-size:11px;font-weight:700;padding:3px 10px;border-radius:999px;margin-bottom:6px}
.hero-card h4{font-size:16px;font-weight:800;line-height:1.35;margin-bottom:6px}
.hero-card .hc-price{margin:8px 0}
.hero-card .hc-price span{font-size:24px;font-weight:800;color:var(--orange)}
.hero-card .hc-price small{font-size:13px;color:var(--t2);text-decoration:line-through;margin-left:8px}
.hero-card p{font-size:12px;color:var(--t2);margin:0 0 12px}
.hero-card .btn{width:100%;justify-content:center}
.dots{position:absolute;bottom:22px;left:56px;display:flex;gap:8px;z-index:3}
.dots span{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.5);cursor:pointer;transition:.3s}
.dots span.on{width:26px;border-radius:6px;background:#fff}

section.block{margin:40px 0}
.sec-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.sec-head h2{font-size:22px;font-weight:800}
.sec-head h2 .bar{display:inline-block;width:6px;height:20px;border-radius:4px;background:linear-gradient(180deg,var(--blue),var(--cyan));margin-right:10px;vertical-align:-3px}
.sec-head .more{color:var(--t2);font-size:13px;display:flex;align-items:center;gap:4px}
.sec-head .more:hover{color:var(--blue)}

.quick-grid{display:grid;grid-template-columns:repeat(8,1fr);gap:14px}
.quick-item{background:var(--card);border-radius:14px;padding:16px 8px;text-align:center;border:1px solid var(--line);transition:.25s}
.quick-item:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfe}
.qc{width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;margin:0 auto 8px;font-size:22px;color:#fff}
.quick-item span.n{font-size:13px;color:var(--t1)}

.course-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.course-card{background:var(--card);border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);transition:.28s;cursor:pointer}
.course-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-h)}
.course-card .cover{height:160px;position:relative;display:flex;align-items:flex-end;padding:12px}
.course-card .cover .badge-free{position:absolute;top:12px;left:12px;background:rgba(255,255,255,.92);color:var(--orange-d);font-size:12px;font-weight:700;padding:4px 10px;border-radius:999px}
.course-card .cover .ctag{background:rgba(0,0,0,.35);color:#fff;font-size:12px;padding:3px 10px;border-radius:8px}
.course-card .body{padding:14px 16px 18px}
.course-card h3{font-size:15px;font-weight:700;line-height:1.4;height:42px;overflow:hidden}
.course-card .meta{display:flex;align-items:center;gap:10px;color:var(--t2);font-size:12px;margin:10px 0 12px}
.course-card .meta .t{display:flex;align-items:center;gap:5px}
.course-card .price{display:flex;align-items:baseline;gap:8px}
.course-card .price .now{color:var(--orange);font-size:20px;font-weight:800}
.course-card .price .old{color:var(--t2);text-decoration:line-through;font-size:13px}
.course-card .price .free{margin-left:auto;font-size:11px;color:var(--blue);background:#EEF3FF;padding:3px 8px;border-radius:6px}

.news-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.news-card{background:var(--card);border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);transition:.28s;cursor:pointer}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.news-card .cover{height:150px;display:flex;align-items:flex-start;padding:12px;position:relative;overflow:hidden}
.news-card .cat{background:rgba(255,255,255,.92);color:var(--blue-d);font-size:12px;font-weight:600;padding:3px 10px;border-radius:6px;position:relative;z-index:1}
.news-card .cover-art{position:absolute;right:-10px;bottom:-10px;width:110px;height:110px;opacity:.35}
.news-card .cover-art svg{width:100%;height:100%}
.news-card .body{padding:14px 16px 16px}
.news-card h3{font-size:15px;font-weight:700;line-height:1.4;height:42px;overflow:hidden}
.news-card p{font-size:13px;color:var(--t2);height:40px;overflow:hidden;margin:8px 0}
.news-card .meta{font-size:12px;color:var(--t2)}

.promo-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.promo-banner{border-radius:var(--radius);padding:28px;color:#fff;display:flex;align-items:center;justify-content:space-between;box-shadow:var(--shadow)}
.pb-member{background:linear-gradient(120deg,#3B6CFF,#7B5CFF)}
.pb-promo{background:linear-gradient(120deg,#FF7A45,#FF5277)}
.promo-banner h3{font-size:20px;font-weight:800;margin-bottom:6px}
.promo-banner p{font-size:13px;opacity:.92;margin-bottom:14px;max-width:340px}
.promo-banner .btn{background:#fff;color:var(--t1)}
.promo-icon{width:72px;height:72px;border-radius:50%;background:rgba(255,255,255,.18);display:flex;align-items:center;justify-content:center;backdrop-filter:blur(4px)}

/* footer */
footer{background:#fff;border-top:1px solid var(--line);margin-top:48px;padding:40px 0 28px}
.ft-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:24px}
footer h5{font-size:14px;font-weight:700;margin-bottom:12px}
footer a{display:block;color:var(--t2);font-size:13px;margin-bottom:8px}
footer a:hover{color:var(--blue)}
.ft-about{font-size:13px;color:var(--t2);max-width:280px}
.ft-bottom{border-top:1px solid var(--line);margin-top:28px;padding-top:18px;text-align:center;color:var(--t2);font-size:12px}

/* generic */
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--t2);margin:22px 0 14px;flex-wrap:wrap}
.breadcrumb a:hover{color:var(--blue)}
.breadcrumb .sep{opacity:.5}
.reveal{opacity:0;transform:translateY(20px);transition:.6s ease}
.reveal.in{opacity:1;transform:none}

/* ===== 栏目列表页 ===== */
.cat-banner{border-radius:var(--radius);padding:34px 36px;color:#fff;box-shadow:var(--shadow);position:relative;overflow:hidden;margin-bottom:22px}
.cat-banner h1{font-size:26px;font-weight:800;margin-bottom:8px}
.cat-banner p{font-size:14px;opacity:.92;max-width:640px}
.cat-banner .count{margin-top:14px;font-size:13px;opacity:.9}
.layout{display:grid;grid-template-columns:240px 1fr;gap:24px;align-items:start}
.side{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;position:sticky;top:130px}
.side h4{font-size:13px;color:var(--t2);font-weight:600;margin-bottom:10px;text-transform:uppercase;letter-spacing:1px}
.cat-tree a{display:block;padding:9px 12px;border-radius:10px;font-size:14px;color:var(--t1);transition:.2s;cursor:pointer}
.cat-tree a:hover{background:#EEF3FF;color:var(--blue)}
.cat-tree a.on{background:linear-gradient(90deg,#EEF3FF,#E6F7FB);color:var(--blue);font-weight:700}
.cat-tree a .sub{display:block;padding-left:14px;font-size:13px;color:var(--t2)}
.sortbar{display:flex;align-items:center;gap:10px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:10px 16px;margin-bottom:18px}
.sortbar .tabs{display:flex;gap:6px}
.sortbar .tabs a{padding:6px 14px;border-radius:999px;font-size:13px;color:var(--t2)}
.sortbar .tabs a.on{background:#EEF3FF;color:var(--blue);font-weight:600}
.sortbar .right{margin-left:auto;color:var(--t2);font-size:13px}
.pager{display:flex;justify-content:center;gap:8px;margin:28px 0}
.pager a{width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;background:var(--card);border:1px solid var(--line);font-size:13px;color:var(--t2)}
.pager a.on{background:linear-gradient(90deg,var(--blue),var(--cyan));color:#fff;border:none}
.content-list{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}

/* ===== 课程详情页 ===== */
.cd-top{display:grid;grid-template-columns:380px 1fr;gap:30px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.cd-cover{height:230px;border-radius:14px;position:relative;display:flex;align-items:flex-end;padding:14px;color:#fff}
.cd-cover .badge-free{position:absolute;top:12px;left:12px;background:rgba(255,255,255,.92);color:var(--orange-d);font-size:12px;font-weight:700;padding:4px 10px;border-radius:999px}
.cd-info h1{font-size:24px;font-weight:800;line-height:1.35;margin-bottom:12px}
.cd-info .teacher{display:flex;align-items:center;gap:10px;margin-bottom:14px;color:var(--t2);font-size:14px}
.cd-info .teacher .av{width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,var(--blue),var(--cyan));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700}
.cd-info .rate{display:flex;gap:16px;color:var(--t2);font-size:13px;margin-bottom:16px}
.cd-info .rate b{color:var(--orange)}
.price-box{background:#FFF8F3;border:1px solid #FFE2D2;border-radius:14px;padding:16px 18px;display:flex;align-items:center;gap:14px;margin-bottom:16px}
.price-box .now{color:var(--orange);font-size:30px;font-weight:800}
.price-box .old{color:var(--t2);text-decoration:line-through;font-size:15px}
.price-box .vip{margin-left:auto;background:#FFF3E0;color:var(--orange-d);font-size:12px;padding:5px 12px;border-radius:999px}
.buy-row{display:flex;gap:12px;margin-bottom:14px}
.distill-card{background:#F6FFF9;border:1px solid #D6F2E2;border-radius:12px;padding:12px 16px;display:flex;align-items:center;gap:12px;font-size:13px;color:#1a7a4a}
.distill-card b{color:var(--orange)}
.tabs{display:flex;gap:8px;border-bottom:2px solid var(--line);margin:26px 0 20px}
.tabs .tab{padding:10px 18px;font-size:15px;color:var(--t2);cursor:pointer;position:relative}
.tabs .tab.on{color:var(--blue);font-weight:700}
.tabs .tab.on:after{content:"";position:absolute;left:18px;right:18px;bottom:-2px;height:3px;border-radius:3px;background:linear-gradient(90deg,var(--blue),var(--cyan))}
.tab-page{display:none}
.tab-page.on{display:block}
.chapter{background:var(--card);border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden}
.chapter .ch-h{display:flex;align-items:center;gap:10px;padding:14px 18px;font-weight:700;font-size:15px;background:#FAFBFE}
.chapter .ch-h .arrow{margin-left:auto;color:var(--t2)}
.lesson-item{display:flex;align-items:center;gap:12px;padding:12px 18px;font-size:14px;border-top:1px solid var(--line);cursor:pointer}
.lesson-item:hover{background:#FAFBFE}
.lesson-item .lk{width:26px;height:26px;border-radius:8px;background:#EEF3FF;color:var(--blue);display:flex;align-items:center;justify-content:center;font-size:12px}
.lesson-item .free-tag{margin-left:auto;font-size:11px;color:var(--orange);background:#FFF3E0;padding:3px 8px;border-radius:6px}
.lesson-item .lock{margin-left:auto;color:var(--t2);font-size:12px}
.lesson-item.locked{color:var(--t2)}
.related{margin-top:30px}
.review{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px 18px;margin-bottom:12px}
.review .u{display:flex;align-items:center;gap:10px;margin-bottom:8px}
.review .u .av{width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,#7B5CFF,#3B6CFF);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}
.review .stars{color:var(--orange);font-size:13px}

/* ===== 学习播放页 ===== */
.study{display:grid;grid-template-columns:260px 1fr 300px;gap:20px;align-items:start;margin-top:18px}
.lesson-tree{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px;position:sticky;top:130px;max-height:calc(100vh - 160px);overflow:auto}
.lesson-tree h4{font-size:13px;color:var(--t2);margin-bottom:10px}
.lesson-tree .li{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:10px;font-size:13px;cursor:pointer}
.lesson-tree .li:hover{background:#EEF3FF}
.lesson-tree .li.on{background:#EEF3FF;color:var(--blue);font-weight:700}
.lesson-tree .li .st{margin-left:auto;font-size:11px;color:var(--t2)}
.player-col .pc-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.player-col .pc-head h2{font-size:18px;font-weight:800}
.player-box{height:440px;border-radius:var(--radius);background:linear-gradient(135deg,#1A2233,#2A4FD0);display:flex;align-items:center;justify-content:center;color:#fff;position:relative;overflow:hidden}
.player-box .play{width:72px;height:72px;border-radius:50%;background:rgba(255,255,255,.2);border:2px solid #fff;display:flex;align-items:center;justify-content:center;font-size:28px}
.player-bar{display:flex;align-items:center;gap:12px;margin-top:12px;color:var(--t2);font-size:13px}
.player-bar .bar{flex:1;height:6px;border-radius:6px;background:var(--line);overflow:hidden}
.player-bar .bar i{display:block;height:100%;width:42%;background:linear-gradient(90deg,var(--blue),var(--cyan))}
.nav-les{display:flex;justify-content:space-between;margin-top:16px}
.lock-mask{position:absolute;inset:0;background:rgba(10,14,25,.82);display:flex;flex-direction:column;align-items:center;justify-content:center;color:#fff;text-align:center;padding:20px}
.lock-mask .big{font-size:46px;margin-bottom:12px}
.study-side{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.study-side h4{font-size:15px;font-weight:700;margin-bottom:12px}
.note-area{width:100%;min-height:120px;border:1px solid var(--line);border-radius:12px;padding:12px;font-size:13px;resize:vertical;font-family:inherit}
.speed-row{display:flex;gap:8px;margin:14px 0}
.speed-row span{padding:5px 12px;border-radius:999px;border:1px solid var(--line);font-size:12px;color:var(--t2);cursor:pointer}
.speed-row span.on{background:#EEF3FF;color:var(--blue);border-color:var(--blue)}
.progress-pill{display:flex;align-items:center;justify-content:space-between;background:#EEF3FF;border-radius:10px;padding:10px 14px;font-size:13px;margin-bottom:12px}

/* ===== 个人中心 ===== */
.uc{display:grid;grid-template-columns:260px 1fr;gap:24px;align-items:start;margin-top:18px}
.uc-side{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;position:sticky;top:130px}
.uc-user{text-align:center;padding-bottom:18px;border-bottom:1px solid var(--line);margin-bottom:14px}
.uc-user .av{width:64px;height:64px;border-radius:50%;background:linear-gradient(135deg,var(--blue),var(--cyan));color:#fff;font-size:24px;font-weight:800;display:flex;align-items:center;justify-content:center;margin:0 auto 10px}
.uc-user .vip{display:inline-block;background:linear-gradient(90deg,#7B5CFF,#3B6CFF);color:#fff;font-size:11px;padding:3px 10px;border-radius:999px;margin-top:6px}
.uc-menu a{display:flex;align-items:center;gap:10px;padding:11px 14px;border-radius:10px;font-size:14px;color:var(--t1);cursor:pointer}
.uc-menu a:hover{background:#EEF3FF;color:var(--blue)}
.uc-menu a.on{background:linear-gradient(90deg,#EEF3FF,#E6F7FB);color:var(--blue);font-weight:700}
.uc-menu a .dotn{margin-left:auto;background:var(--orange);color:#fff;font-size:11px;padding:1px 7px;border-radius:999px}
.uc-main .uc-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:22px}
.uc-stat{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px;text-align:center}
.uc-stat .n{font-size:24px;font-weight:800;background:linear-gradient(90deg,var(--blue),var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent}
.uc-stat .l{font-size:12px;color:var(--t2);margin-top:4px}
.uc-panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.uc-panel h3{font-size:17px;font-weight:800;margin-bottom:16px}
.uc-row{display:flex;align-items:center;gap:14px;padding:14px;border:1px solid var(--line);border-radius:12px;margin-bottom:12px}
.uc-row .cv{width:80px;height:54px;border-radius:8px;flex:none}
.uc-row .info{flex:1}
.uc-row .info h4{font-size:14px;font-weight:700}
.uc-row .info p{font-size:12px;color:var(--t2)}
.uc-row .bar{height:6px;border-radius:6px;background:var(--line);overflow:hidden;margin-top:6px}
.uc-row .bar i{display:block;height:100%;background:linear-gradient(90deg,var(--blue),var(--cyan))}

/* ===== 推广中心 ===== */
.pc-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:18px 0 22px}
.pc-stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
.pc-stat .n{font-size:26px;font-weight:800;background:linear-gradient(90deg,var(--orange),var(--orange-d));-webkit-background-clip:text;background-clip:text;color:transparent}
.pc-stat .l{font-size:13px;color:var(--t2);margin-top:4px}
.pc-code{display:grid;grid-template-columns:1fr 300px;gap:20px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;margin-bottom:22px}
.pc-code .link-box{background:#F6F8FD;border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:13px;color:var(--t2);margin:10px 0;word-break:break-all}
.pc-code .qr{width:200px;height:200px;border-radius:14px;background:repeating-conic-gradient(#1A2233 0 25%, #fff 0 50%) 50%/22px 22px;margin:0 auto;border:8px solid #fff;box-shadow:var(--shadow)}
.pc-code .qr-note{text-align:center;font-size:12px;color:var(--t2);margin-top:10px}
.pc-upgrade{background:linear-gradient(120deg,#FF7A45,#FF5277);color:#fff;border-radius:12px;padding:12px 16px;font-size:13px;margin-top:14px;display:flex;align-items:center;justify-content:space-between}
.pc-tabs{display:flex;gap:8px;border-bottom:2px solid var(--line);margin-bottom:18px}
.pc-tabs .tab{padding:10px 18px;font-size:14px;color:var(--t2);cursor:pointer}
.pc-tabs .tab.on{color:var(--orange);font-weight:700;border-bottom:3px solid var(--orange);margin-bottom:-2px}
.rec{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px;margin-bottom:12px;font-size:13px;align-items:center}
.rec .who{font-weight:700}
.rec .tag{font-size:11px;padding:2px 8px;border-radius:6px}
.rec .tag.reg{background:#EEF3FF;color:var(--blue)}
.rec .tag.pay{background:#FFF3E0;color:var(--orange-d)}
.rec .tag.money{color:var(--orange);font-weight:700}

/* ===== 教育资讯页（与网课页完全独立的资讯排版） ===== */
.news-layout{display:grid;grid-template-columns:1fr 300px;gap:24px;align-items:start}
/* 头条区 */
.news-hero{display:grid;grid-template-columns:1.6fr 1fr;gap:20px;margin-bottom:22px}
.news-feat{position:relative;border-radius:var(--radius);overflow:hidden;min-height:280px;display:flex;align-items:flex-end;padding:24px;color:#fff;cursor:pointer;box-shadow:var(--shadow);transition:.3s}
.news-feat:hover{transform:translateY(-4px);box-shadow:var(--shadow-h)}
.news-feat .mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,26,40,0) 30%,rgba(20,26,40,.85))}
.news-feat .ft-body{position:relative;z-index:1}
.news-feat .cat{display:inline-block;background:rgba(255,255,255,.2);backdrop-filter:blur(4px);font-size:12px;font-weight:600;padding:4px 12px;border-radius:999px;margin-bottom:10px}
.news-feat h2{font-size:24px;font-weight:800;line-height:1.35;margin-bottom:8px}
.news-feat p{font-size:13px;opacity:.9;max-width:480px}
.news-feat .ft-meta{margin-top:12px;font-size:12px;opacity:.85;display:flex;gap:14px}
/* 要闻榜 */
.news-top{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow)}
.news-top h4{font-size:15px;font-weight:800;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.news-top h4 .bar{width:4px;height:16px;border-radius:3px;background:linear-gradient(180deg,var(--blue),var(--cyan));display:inline-block}
.news-top .nt{display:flex;gap:10px;align-items:baseline;padding:10px 0;border-bottom:1px dashed var(--line);cursor:pointer;font-size:13px;line-height:1.5}
.news-top .nt:last-child{border-bottom:none}
.news-top .nt:hover{color:var(--blue)}
.news-top .nt .idx{flex:none;width:20px;height:20px;border-radius:6px;background:#EEF3FF;color:var(--blue);font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center}
.news-top .nt.hot .idx{background:linear-gradient(135deg,var(--orange),var(--orange-d));color:#fff}
/* 资讯分类 */
.news-cats{display:flex;gap:8px;flex-wrap:wrap;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 16px;margin-bottom:18px}
.news-cats a{padding:6px 16px;border-radius:999px;font-size:13px;color:var(--t2)}
.news-cats a:hover{color:var(--blue)}
.news-cats a.on{background:#EEF3FF;color:var(--blue);font-weight:700}
/* 资讯列表（横向文章卡片：封面+标签+标题+摘要+来源/时间/阅读量） */
.news-list{display:flex;flex-direction:column;gap:16px}
.news-item{display:grid;grid-template-columns:220px 1fr;gap:18px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px;transition:.28s;cursor:pointer}
.news-item:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#D8E4FF}
.news-item .nc{height:120px;border-radius:12px;position:relative;flex:none}
.news-item .nc .cat{position:absolute;top:10px;left:10px;background:rgba(255,255,255,.92);color:var(--blue-d);font-size:11px;font-weight:700;padding:3px 10px;border-radius:6px}
.news-item .nb{display:flex;flex-direction:column;min-width:0}
.news-item .nb h3{font-size:16px;font-weight:700;line-height:1.45;margin-bottom:8px}
.news-item .nb h3:hover{color:var(--blue)}
.news-item .nb .sum{font-size:13px;color:var(--t2);line-height:1.7;flex:1;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.news-item .nb .nm{margin-top:10px;display:flex;align-items:center;gap:14px;font-size:12px;color:var(--t2)}
.news-item .nb .nm .src{color:var(--blue);font-weight:600}
.news-item .nb .nm .views{margin-left:auto;display:flex;align-items:center;gap:4px}
/* 侧栏 */
.news-aside{display:flex;flex-direction:column;gap:20px;position:sticky;top:130px}
.rank-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.rank-card h4{font-size:15px;font-weight:800;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.rank-card h4 .bar{width:4px;height:16px;border-radius:3px;background:linear-gradient(180deg,var(--orange),var(--orange-d));display:inline-block}
.rank-item{display:flex;gap:10px;align-items:flex-start;padding:9px 0;border-bottom:1px dashed var(--line);cursor:pointer}
.rank-item:last-child{border-bottom:none}
.rank-item .rk{flex:none;width:20px;height:20px;border-radius:6px;background:var(--bg);color:var(--t2);font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center}
.rank-item:nth-child(-n+3) .rk{background:linear-gradient(135deg,var(--orange),var(--orange-d));color:#fff}
.rank-item:hover h5{color:var(--blue)}
.rank-item h5{font-size:13px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rank-item .rm{font-size:11px;color:var(--t2);margin-top:3px}
.special-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.special-card h4{font-size:15px;font-weight:800;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.special-card h4 .bar{width:4px;height:16px;border-radius:3px;background:linear-gradient(180deg,var(--blue),var(--cyan));display:inline-block}
.special-item{position:relative;border-radius:12px;overflow:hidden;height:86px;display:flex;align-items:flex-end;padding:12px;color:#fff;margin-bottom:10px;cursor:pointer}
.special-item:last-child{margin-bottom:0}
.special-item .s-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,26,40,0),rgba(20,26,40,.72))}
.special-item b{position:relative;z-index:1;font-size:14px;font-weight:700;line-height:1.4}
.subscribe-card{background:linear-gradient(135deg,#3B6CFF,#1FC8DB);border-radius:var(--radius);padding:20px;color:#fff}
.subscribe-card h4{font-size:16px;font-weight:800;margin-bottom:8px}
.subscribe-card p{font-size:12px;opacity:.9;margin-bottom:14px;line-height:1.7}
.subscribe-card .qr{width:96px;height:96px;border-radius:10px;background:repeating-conic-gradient(#fff 0 25%,#e8ecf3 0 50%) 50%/14px 14px;margin:0 auto 10px;border:4px solid #fff}
.subscribe-card .note{text-align:center;font-size:11px;opacity:.9}
/* 资讯页响应式 */
@media(max-width:1100px){
  .news-layout{grid-template-columns:1fr}
  .news-aside{position:static;display:grid;grid-template-columns:1fr 1fr;align-items:start}
}
@media(max-width:900px){
  .news-hero{grid-template-columns:1fr}
}
@media(max-width:680px){
  .news-item{grid-template-columns:110px 1fr;padding:10px;gap:12px}
  .news-item .nc{height:86px}
  .news-item .nb .sum{display:none}
  .news-aside{grid-template-columns:1fr}
}

/* responsive */
@media(max-width:1100px){
  .cd-top{grid-template-columns:300px 1fr}
  .study{grid-template-columns:220px 1fr}
  .pc-code{grid-template-columns:1fr 240px}
}
@media(max-width:900px){
  .quick-grid{grid-template-columns:repeat(4,1fr)}
  .course-grid,.content-list{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .promo-row{grid-template-columns:1fr}
  .ft-grid{grid-template-columns:1fr 1fr}
  .layout{grid-template-columns:1fr}
  .side{position:static}
  .cd-top{grid-template-columns:1fr}
  .study{grid-template-columns:1fr}
  .lesson-tree,.study-side{position:static;max-height:none}
  .uc{grid-template-columns:1fr}
  .uc-side,.side{position:static}
  .pc-code{grid-template-columns:1fr}
  .pc-stats,.uc-main .uc-stats{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:680px){
  .search{display:none}
  nav.topnav{display:none}
  nav.topnav.open{display:flex;flex-wrap:wrap;height:auto;padding:8px 0}
  .menu-toggle{display:flex;margin-left:auto;width:38px;height:38px;border-radius:10px;background:#fff;border:1px solid var(--line);align-items:center;justify-content:center;cursor:pointer}
  .slide{flex-direction:column;justify-content:center;padding:24px;text-align:center}
  .slide .promo-card{margin:18px 0 0;width:100%}
  .slide h1{font-size:26px}
  .slides{height:auto;min-height:400px}
  .dots{left:24px}
  .quick-grid{grid-template-columns:repeat(3,1fr)}
  .course-grid,.news-grid,.content-list{grid-template-columns:1fr}
  .wx-login{display:none}
  .rec{grid-template-columns:1fr 1fr;gap:6px}
}

/* ============================================================
   广告位组件（通用）
   后台 ad_position 对应：ad-banner=channel_banner / ad-box=side_bar
   原型用渐变占位图，上线由后台广告素材替换渲染
   ============================================================ */
.ad{position:relative;overflow:hidden;border-radius:var(--radius);cursor:pointer;transition:.25s;border:1px solid var(--line)}
.ad:hover{box-shadow:var(--shadow-h);transform:translateY(-2px)}
.ad .tag-ad{position:absolute;top:8px;right:8px;z-index:2;background:rgba(0,0,0,.42);color:#fff;font-size:10px;padding:1px 8px;border-radius:99px;letter-spacing:1px}
.ad-banner{display:flex;align-items:center;gap:20px;padding:20px 26px;color:#fff;margin:18px 0}
.ad-banner .ic{width:64px;height:64px;border-radius:16px;background:rgba(255,255,255,.18);display:flex;align-items:center;justify-content:center;font-size:30px;flex-shrink:0}
.ad-banner h4{font-size:17px;font-weight:800}
.ad-banner p{font-size:12px;opacity:.92;margin-top:3px}
.ad-banner .go{margin-left:auto;flex-shrink:0;background:#fff;color:var(--blue);font-size:13px;font-weight:700;padding:8px 18px;border-radius:99px;box-shadow:0 4px 12px rgba(0,0,0,.12)}
.ad-box{margin-top:16px;text-align:center;padding:24px 18px;color:#fff}
.ad-box .ic{width:76px;height:76px;border-radius:18px;background:rgba(255,255,255,.2);display:flex;align-items:center;justify-content:center;font-size:34px;margin:0 auto 10px}
.ad-box h4{font-size:15px;font-weight:800}
.ad-box p{font-size:12px;opacity:.92;margin-top:4px;line-height:1.6}
.ad-box .go{display:inline-block;margin-top:10px;background:rgba(255,255,255,.2);border:1px solid rgba(255,255,255,.5);color:#fff;font-size:12px;font-weight:700;padding:6px 16px;border-radius:99px}

/* ============================================================
   商城页（精选网课 · 课程 + 实物）
   ============================================================ */
.mall-tabs{display:flex;gap:8px;margin:18px 0;flex-wrap:wrap}
.mall-tabs a{padding:9px 20px;border-radius:99px;background:#fff;border:1px solid var(--line);font-size:14px;color:var(--t2);cursor:pointer;transition:.2s}
.mall-tabs a.on,.mall-tabs a:hover{background:linear-gradient(90deg,var(--blue),var(--cyan));color:#fff;border-color:transparent}
.goods-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:16px}
.goods-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s;cursor:pointer}
.goods-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-h)}
.goods-card .g-cover{height:180px;display:flex;align-items:center;justify-content:center;position:relative;background-size:cover;background-position:center;background-color:#f6f8fd}
.goods-card .g-cover .g-flag{position:absolute;left:10px;top:10px;background:rgba(0,0,0,.55);color:#fff;font-size:11px;font-weight:600;padding:3px 10px;border-radius:99px}
.goods-card .g-body{padding:14px 16px 16px}
.goods-card .g-body h3{font-size:14px;font-weight:700;line-height:1.45;height:40px;overflow:hidden}
.goods-card .g-body .g-spec{font-size:11px;color:var(--t2);margin-top:6px}
.goods-card .g-foot{display:flex;align-items:center;justify-content:space-between;margin-top:10px}
.goods-card .g-foot .g-price{color:var(--orange);font-weight:800;font-size:17px}
.goods-card .g-foot .g-price small{font-size:11px;font-weight:500;color:var(--t2);margin-left:4px;text-decoration:line-through}
.goods-card .g-foot .g-buy{background:linear-gradient(90deg,var(--orange),var(--orange-d));color:#fff;font-size:12px;font-weight:700;padding:6px 14px;border-radius:99px}
.goods-card .g-foot .g-buy.cart{background:#fff;color:var(--blue);border:1px solid var(--blue)}
.mall-float{position:fixed;right:26px;bottom:26px;z-index:60;background:linear-gradient(90deg,var(--blue),var(--cyan));color:#fff;padding:12px 22px;border-radius:999px;font-size:14px;font-weight:700;box-shadow:var(--shadow-h);cursor:pointer;display:flex;align-items:center;gap:8px}
.mall-float .cnt{background:#fff;color:var(--blue);border-radius:99px;font-size:12px;padding:1px 9px}
@media(max-width:900px){.goods-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.goods-grid{grid-template-columns:1fr 1fr}.goods-card .g-cover{height:120px}}

/* ============================================================
   课程教学 · 学段导航页（幼儿园 → 高中）
   ============================================================ */
.stage-hero{border-radius:20px;overflow:hidden;background:linear-gradient(120deg,#3B6CFF,#1FC8DB);color:#fff;padding:44px 40px 30px;margin-bottom:20px;box-shadow:var(--shadow);min-height:220px;box-sizing:border-box}
.stage-hero h1{font-size:30px;font-weight:800}
.stage-hero h1 .grad-text{background:linear-gradient(90deg,#fff,#C9E8FF);-webkit-background-clip:text;background-clip:text;color:transparent}
.stage-hero p{font-size:14px;opacity:.92;margin-top:8px;max-width:680px}
.stage-hero .s-tags{display:flex;gap:10px;margin-top:16px;flex-wrap:wrap}
.stage-hero .s-tags span{background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.3);padding:5px 14px;border-radius:99px;font-size:12px}
.stage-head{display:flex;align-items:center;gap:10px;margin:18px 0 12px}
.stage-head .dot{width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:17px}
.stage-head h3{font-size:18px;font-weight:800}
.stage-head .tagline{font-size:12px;color:var(--t2)}
.free-note{display:flex;gap:10px;align-items:flex-start;background:#F0F7FF;border:1px solid #D3E6FF;border-radius:12px;padding:12px 14px;font-size:12px;color:#2A5B9E;line-height:1.7;margin-top:16px}
.stage-cats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:20px}
.stage{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;cursor:pointer;transition:.25s;position:relative;overflow:hidden}
.stage::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--cc,#3B6CFF);opacity:0;transition:.25s}
.stage:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.stage.on{border-color:var(--cc,#3B6CFF);box-shadow:var(--shadow-h)}
.stage.on::before{opacity:1}
.stage .ic{font-size:28px}
.stage .st-top{display:flex;align-items:center;gap:10px}
.stage .st-top .ic{font-size:26px}
.stage .st-top h4{font-size:16px;font-weight:800}
.stage .go{position:absolute;right:14px;top:14px;font-size:11px;color:var(--cc,#3B6CFF);font-weight:700;background:#F0F4FF;padding:4px 10px;border-radius:99px;opacity:0;transition:.2s}
.stage:hover .go{opacity:1}
.stage h4{font-size:16px;font-weight:800;margin-top:8px}
.stage .ages{font-size:11px;color:var(--t2);margin-top:2px}
.stage .desc{font-size:12px;color:var(--t2);margin-top:6px;line-height:1.5}
.stage .cnt{font-size:11px;color:var(--t2);margin-top:8px;padding-top:8px;border-top:1px dashed var(--line)}
.stage-panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;margin-bottom:18px}
.stage-panel h3{font-size:17px;font-weight:800;display:flex;align-items:center;gap:8px}
.stage-panel .sub{font-size:12px;color:var(--t2);margin-top:2px}
.path{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:16px}
.path .p{background:#F7F9FE;border:1px solid var(--line);border-radius:12px;padding:14px}
.path .p .n{font-size:11px;color:var(--blue);font-weight:700;letter-spacing:1px}
.path .p h5{font-size:13px;font-weight:700;margin-top:6px}
.path .p p{font-size:11px;color:var(--t2);margin-top:4px;line-height:1.6}
.stage-rec{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:16px}
.rec-card{display:flex;gap:12px;align-items:center;border:1px solid var(--line);border-radius:12px;padding:12px;transition:.2s;background:#fff;cursor:pointer}
.rec-card:hover{box-shadow:var(--shadow-h);transform:translateY(-2px)}
.rec-card .rc-ic{width:46px;height:46px;border-radius:12px;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:22px;color:#fff}
.rec-card h5{font-size:13px;font-weight:700;line-height:1.4}
.rec-card p{font-size:11px;color:var(--t2);margin-top:3px}
.rec-card .rc-go{font-size:11px;color:var(--blue);font-weight:600;margin-top:6px}
.comply{display:flex;gap:10px;align-items:flex-start;background:#FFF8EF;border:1px solid #FFE8C7;border-radius:12px;padding:14px 16px;font-size:12px;color:#8a5b1f;line-height:1.7;margin-top:18px}
@media(max-width:900px){.stage-cats{grid-template-columns:repeat(2,1fr)}.path{grid-template-columns:repeat(2,1fr)}.stage-rec{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.stage-rec{grid-template-columns:1fr}}
/* 学段导航主页（channel.html 风格概览页） */
.nav-hero{border-radius:20px;overflow:hidden;background:linear-gradient(90deg,rgba(10,40,90,.72) 0%,rgba(10,40,90,.35) 55%,rgba(10,40,90,.55) 100%),url('/uploads/stage-hero-bg.png') center/cover no-repeat;color:#fff;padding:36px 40px 32px;margin-bottom:22px;box-shadow:var(--shadow);position:relative}
.nav-hero h1{font-size:30px;font-weight:800}
.nav-hero h1 .grad-text{background:linear-gradient(90deg,#fff,#C9E8FF);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-hero p{font-size:14px;opacity:.92;margin-top:10px;max-width:700px;line-height:1.8}
.nav-hero .n-stats{display:flex;gap:28px;margin-top:20px;font-size:13px;opacity:.92;flex-wrap:wrap}
.nav-hero .n-stats b{font-size:20px;font-weight:800;margin-right:4px}
.nav-tip{text-align:center;font-size:12px;color:var(--t2);margin:16px 0 6px}

/* 学段装备导流条（学段导航 → 商城学习装备，后台可按 nav_id 配置） */
.gear-strip{margin-top:18px}
.gear-strip .g-head{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:800;margin-bottom:10px}
.gear-strip .g-head .g-more{margin-left:auto;font-size:12px;font-weight:600;color:var(--orange)}
.gear-items{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.gear-item{display:flex;align-items:center;gap:12px;border:1px dashed var(--line);border-radius:12px;padding:12px;background:#FFFAF5;transition:.2s;cursor:pointer}
.gear-item:hover{box-shadow:var(--shadow-h);transform:translateY(-2px);border-style:solid;border-color:var(--orange)}
.gear-item .gi-ic{width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,#FFB347,#FF7A45);display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0}
.gear-item h5{font-size:13px;font-weight:700}
.gear-item p{font-size:11px;color:var(--t2);margin-top:2px}
.gear-item .gi-go{margin-left:auto;font-size:11px;color:var(--orange);font-weight:700;flex-shrink:0}
@media(max-width:900px){.gear-items{grid-template-columns:1fr}}

/* ===== 交易闭环（购物车 / 结算 / 订单 / 退款） ===== */
.gd-top{display:grid;grid-template-columns:420px 1fr;gap:28px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;margin-bottom:18px}
.gd-cover{border-radius:16px;height:320px;display:flex;align-items:center;justify-content:center;font-size:96px;position:relative;overflow:hidden}
.gd-cover .g-flag{position:absolute;left:14px;top:14px;background:rgba(255,255,255,.92);color:var(--orange-d);font-size:12px;font-weight:700;padding:4px 12px;border-radius:99px}
.gd-info h1{font-size:24px;font-weight:800;line-height:1.4}
.gd-info .gd-sub{font-size:13px;color:var(--t2);margin-top:8px;line-height:1.7}
.gd-price{margin:16px 0;display:flex;align-items:baseline;gap:10px}
.gd-price .now{color:var(--orange);font-size:30px;font-weight:800}
.gd-price .old{color:var(--t2);text-decoration:line-through;font-size:15px}
.gd-price .tag{font-size:11px;color:var(--blue);background:#EEF3FF;padding:3px 10px;border-radius:99px}
.gd-row{display:flex;align-items:center;gap:10px;margin:14px 0}
.gd-row .lab{font-size:13px;color:var(--t2);width:56px;flex:none}
.spec-opt{display:flex;gap:8px;flex-wrap:wrap}
.spec-opt span{border:1px solid var(--line);border-radius:99px;padding:6px 16px;font-size:13px;cursor:pointer;transition:.2s;background:#fff}
.spec-opt span.on{border-color:var(--blue);color:var(--blue);background:#EEF3FF;font-weight:700}
.num-ctl{display:flex;align-items:center;border:1px solid var(--line);border-radius:99px;overflow:hidden}
.num-ctl button{width:34px;height:34px;border:none;background:#F7F9FE;font-size:16px;cursor:pointer;color:var(--t1)}
.num-ctl b{width:44px;text-align:center;font-size:14px}
.gd-actions{display:flex;gap:12px;margin-top:22px}
.gd-actions .btn{padding:12px 26px;font-size:14px}
.gd-note{margin-top:16px;display:flex;gap:18px;font-size:12px;color:var(--t2);flex-wrap:wrap}
.gd-feats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:18px}
.gd-feats .f{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px}
.gd-feats .f h4{font-size:14px;font-weight:700;display:flex;align-items:center;gap:8px}
.gd-feats .f p{font-size:12px;color:var(--t2);margin-top:6px;line-height:1.6}

.cart-bar{position:sticky;bottom:16px;background:var(--card);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-h);display:flex;align-items:center;gap:20px;padding:14px 22px;margin-top:18px;z-index:50}
.cart-bar .cb-total{margin-left:auto;font-size:14px;color:var(--t2)}
.cart-bar .cb-total b{color:var(--orange);font-size:22px;font-weight:800}
.cart-item{display:flex;align-items:center;gap:16px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px 18px;margin-bottom:12px;transition:.2s}
.cart-item:hover{box-shadow:var(--shadow)}
.cart-item .ci-cover{width:84px;height:64px;border-radius:10px;flex:none;display:flex;align-items:center;justify-content:center;font-size:30px}
.cart-item .ci-info{flex:1;min-width:0}
.cart-item .ci-info h4{font-size:14px;font-weight:700;line-height:1.4}
.cart-item .ci-info .ci-spec{font-size:12px;color:var(--t2);margin-top:4px}
.cart-item .ci-price{color:var(--orange);font-weight:800;font-size:16px;width:90px;text-align:right}
.cart-item .ci-ops{display:flex;align-items:center;gap:14px}
.cart-item .ci-del{font-size:12px;color:var(--t2);cursor:pointer;transition:.2s}
.cart-item .ci-del:hover{color:var(--red,#E24B4A)}
.cart-item .ci-radio{width:18px;height:18px;border:1.5px solid var(--line);border-radius:50%;flex:none;cursor:pointer;transition:.2s;display:flex;align-items:center;justify-content:center}
.cart-item .ci-radio.on{border-color:var(--blue)}
.cart-item .ci-radio.on::after{content:"";width:10px;height:10px;border-radius:50%;background:var(--blue)}

.co-grid{display:grid;grid-template-columns:1fr 360px;gap:20px;align-items:start}
.co-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;margin-bottom:16px}
.co-card h3{font-size:16px;font-weight:800;display:flex;align-items:center;gap:8px;margin-bottom:14px}
.co-card h3 .sub{font-size:12px;color:var(--t2);font-weight:400;margin-left:auto}
.addr-item{border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin-bottom:10px;cursor:pointer;transition:.2s;display:flex;gap:12px;align-items:center}
.addr-item.on{border-color:var(--blue);background:#F4F8FF}
.addr-item .ad-name{font-weight:700;font-size:14px}
.addr-item .ad-tel{color:var(--t2);font-size:13px;margin-left:10px}
.addr-item .ad-detail{font-size:13px;color:var(--t2);flex:1}
.addr-item .ad-edit{font-size:12px;color:var(--t2);cursor:pointer}
.addr-add{border:1px dashed var(--blue);color:var(--blue);border-radius:12px;padding:12px;text-align:center;font-size:13px;cursor:pointer;transition:.2s}
.addr-add:hover{background:#F4F8FF}
.pay-opt{display:flex;align-items:center;gap:12px;border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin-bottom:10px;cursor:pointer;transition:.2s}
.pay-opt.on{border-color:var(--blue);background:#F4F8FF}
.pay-opt .po-ic{width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:18px;flex:none}
.pay-opt .po-name{font-size:14px;font-weight:700}
.pay-opt .po-desc{font-size:12px;color:var(--t2);margin-top:2px}
.pay-opt .po-radio{margin-left:auto;width:18px;height:18px;border:1.5px solid var(--line);border-radius:50%;flex:none}
.pay-opt.on .po-radio{border-color:var(--blue)}
.pay-opt.on .po-radio::after{content:"";display:block;width:10px;height:10px;border-radius:50%;background:var(--blue);margin:2.25px auto}
.co-sum-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;position:sticky;top:130px}
.co-sum-card h3{font-size:16px;font-weight:800;margin-bottom:14px}
.co-sum-item{display:flex;gap:10px;padding:10px 0;border-bottom:1px dashed var(--line);align-items:center}
.co-sum-item:last-child{border-bottom:none}
.co-sum-item .cs-cover{width:52px;height:40px;border-radius:8px;flex:none;display:flex;align-items:center;justify-content:center;font-size:20px}
.co-sum-item .cs-name{font-size:13px;line-height:1.4;flex:1;min-width:0}
.co-sum-item .cs-price{font-size:13px;color:var(--t2);flex:none}
.co-sum-item .cs-x{font-size:11px;color:var(--t2)}
.co-total{display:flex;justify-content:space-between;align-items:baseline;margin-top:14px;padding-top:14px;border-top:1px solid var(--line)}
.co-total .ct-lab{font-size:13px;color:var(--t2)}
.co-total .ct-num{color:var(--orange);font-size:24px;font-weight:800}
.co-total .ct-num small{font-size:12px;color:var(--t2);font-weight:400}
.co-submit{width:100%;margin-top:16px;padding:14px;font-size:15px}
.co-tip{font-size:11px;color:var(--t2);margin-top:10px;text-align:center}

.pay-ok{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:48px 24px;text-align:center;margin-bottom:18px}
.pay-ok .ok-ic{width:72px;height:72px;border-radius:50%;background:linear-gradient(135deg,#16C79A,#1FC8DB);color:#fff;font-size:34px;display:flex;align-items:center;justify-content:center;margin:0 auto 18px}
.pay-ok h1{font-size:24px;font-weight:800}
.pay-ok p{color:var(--t2);font-size:14px;margin-top:8px}
.pay-ok .ok-actions{display:flex;gap:12px;justify-content:center;margin-top:24px}
.pay-ok .ok-actions .btn{padding:11px 26px}
.pay-ok .ok-card{display:inline-flex;align-items:center;gap:12px;border:1px solid var(--line);border-radius:12px;padding:14px 20px;margin-top:20px;background:#fff;text-align:left}
.pay-ok .ok-card .oc-ic{width:44px;height:44px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:22px}
.pay-ok .ok-card h5{font-size:14px;font-weight:700}
.pay-ok .ok-card p{font-size:12px;color:var(--t2);margin-top:2px}

.ord-tabs{display:flex;gap:6px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:6px;margin-bottom:18px;overflow-x:auto}
.ord-tabs a{flex:1;text-align:center;padding:10px;border-radius:9px;font-size:14px;color:var(--t2);white-space:nowrap;transition:.2s}
.ord-tabs a.on{background:linear-gradient(90deg,var(--blue),var(--cyan));color:#fff;font-weight:700}
.ord-card{background:var(--card);border:1px solid var(--line);border-radius:14px;margin-bottom:14px;overflow:hidden}
.ord-head{display:flex;align-items:center;gap:12px;padding:12px 18px;background:#F9FAFC;border-bottom:1px solid var(--line);font-size:12px;color:var(--t2)}
.ord-head .oh-no{color:var(--t2)}
.ord-head .oh-status{margin-left:auto;font-weight:700}
.st-pay{color:var(--orange)}
.st-ship{color:var(--blue)}
.st-done{color:#16A16F}
.st-refund{color:#993556}
.ord-body{display:flex;align-items:center;gap:14px;padding:14px 18px}
.ord-body .ob-cover{width:64px;height:48px;border-radius:8px;flex:none;display:flex;align-items:center;justify-content:center;font-size:24px}
.ord-body .ob-name{font-size:14px;font-weight:700;line-height:1.4;flex:1;min-width:0}
.ord-body .ob-name .ob-spec{font-size:12px;color:var(--t2);font-weight:400;margin-top:3px}
.ord-body .ob-price{font-size:15px;color:var(--orange);font-weight:800;flex:none}
.ord-foot{display:flex;align-items:center;gap:10px;justify-content:flex-end;padding:12px 18px;border-top:1px solid var(--line);font-size:12px;color:var(--t2)}
.ord-foot .of-total b{color:var(--t1);font-size:15px}
.ord-foot .of-total b.orange{color:var(--orange)}
.ord-foot .btn-sm{padding:7px 16px;font-size:12px;border-radius:8px;border:1px solid var(--line);background:#fff;cursor:pointer;transition:.2s}
.ord-foot .btn-sm:hover{border-color:var(--blue);color:var(--blue)}
.ord-foot .btn-sm.solid{background:linear-gradient(90deg,var(--blue),var(--cyan));color:#fff;border-color:transparent}

.od-step{display:flex;align-items:center;gap:0;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px 24px;margin-bottom:16px}
.od-step .st{flex:1;text-align:center;position:relative}
.od-step .st .ic{width:36px;height:36px;border-radius:50%;margin:0 auto 8px;display:flex;align-items:center;justify-content:center;font-size:15px;border:2px solid var(--line);background:#fff;color:var(--t2)}
.od-step .st.on .ic{border-color:var(--blue);background:#EEF3FF;color:var(--blue)}
.od-step .st.done .ic{border-color:#16A16F;background:#EAF7F1;color:#16A16F}
.od-step .st .lab{font-size:12px;color:var(--t2)}
.od-step .st.on .lab{color:var(--blue);font-weight:700}
.od-step .st.done .lab{color:#16A16F;font-weight:700}
.od-step .ln{width:100%;flex:1;height:2px;background:var(--line);position:relative;top:-14px}
.refund-box{background:#FFF7F7;border:1px solid #FFD9D9;border-radius:12px;padding:14px 16px;margin-top:14px;font-size:13px;color:#8a4a4a;line-height:1.7}
.refund-box b{color:#6e3030}
.refund-box .rf-go{margin-top:10px;display:flex;gap:10px}
.rf-log{display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line);font-size:13px}
.rf-log:last-child{border-bottom:none}
.rf-log .rl-time{color:var(--t2);font-size:12px;width:150px;flex:none}
.rf-log .rl-txt{flex:1}
.rf-log .rl-txt .ok{color:#16A16F;font-weight:600}
.rf-log .rl-txt .wait{color:var(--orange);font-weight:600}
.od-grid{display:grid;grid-template-columns:1fr 360px;gap:20px;align-items:start}
.od-side{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;position:sticky;top:130px}
.od-side h3{font-size:15px;font-weight:800;margin-bottom:12px}
.od-side .kv{display:flex;justify-content:space-between;font-size:13px;padding:8px 0;border-bottom:1px dashed var(--line)}
.od-side .kv:last-child{border-bottom:none}
.od-side .kv span:last-child{color:var(--t2)}
@media(max-width:900px){.gd-top{grid-template-columns:1fr}.gd-cover{height:220px}.gd-feats{grid-template-columns:1fr}.co-grid{grid-template-columns:1fr}.od-grid{grid-template-columns:1fr}.co-sum-card{position:static}.od-side{position:static}}

/* ============================================================
   名师风采页（对齐 静态页/智学云静态站/teachers.html）
   ============================================================ */
.crumb{font-size:13px;color:var(--t2);padding:16px 0}
.crumb a:hover{color:var(--blue)}
.page-hero{border-radius:20px;overflow:hidden;background:linear-gradient(120deg,#3B6CFF,#7B5CFF);color:#fff;margin-bottom:30px;box-shadow:var(--shadow);min-height:220px;box-sizing:border-box}
.page-hero .inner{padding:44px 40px 0}
.page-hero h1{font-size:30px;font-weight:800}
.page-hero h1 .grad-text{background:linear-gradient(90deg,#fff,#B9E8FF);-webkit-background-clip:text;background-clip:text;color:transparent}
.page-hero p{font-size:14px;opacity:.92;margin-top:8px}
.ts-stats{display:grid;grid-template-columns:repeat(4,1fr);margin-top:30px;border-top:1px solid rgba(255,255,255,.25);padding:22px 40px;background:rgba(255,255,255,.08)}
.ts-stat{text-align:center}
.ts-stat .n{font-size:26px;font-weight:800;letter-spacing:.5px}
.ts-stat .l{font-size:12px;opacity:.85;margin-top:2px}
.filter-bar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:22px}
.filter-bar .lb{font-size:13px;color:var(--t2);font-weight:600;margin-right:4px}
.filter-bar .chip{padding:7px 18px;border-radius:999px;font-size:13px;background:#fff;border:1px solid var(--line);cursor:pointer;transition:.2s}
.filter-bar .chip.on,.filter-bar .chip:hover{color:var(--blue);border-color:var(--blue);background:#EEF3FF;font-weight:600}
.top3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:34px}
.top-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px 20px 18px;display:flex;gap:16px;align-items:flex-start;position:relative;transition:.28s;cursor:pointer}
.top-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-h);border-color:#D8E4FF}
.top-card .medal{position:absolute;top:-12px;left:16px;font-size:28px;filter:drop-shadow(0 3px 6px rgba(0,0,0,.15))}
.top-card .t-photo{width:72px;height:72px;border-radius:18px;flex:none;overflow:hidden;box-shadow:var(--shadow);background:var(--line)}
.top-card .t-photo img{width:100%;height:100%;object-fit:cover}
.top-card .t-info{flex:1;min-width:0}
.top-card h3{font-size:16px;font-weight:800;display:flex;align-items:center;gap:6px}
.top-card h3 .cert{font-size:11px;font-weight:600;color:var(--blue);background:#EEF3FF;padding:2px 8px;border-radius:999px}
.top-card .vt{font-size:12px;color:var(--t2);margin:2px 0 8px}
.top-card .stars{color:var(--orange);font-size:12px;display:flex;align-items:center;gap:6px}
.top-card .stars b{color:var(--orange);font-size:14px}
.top-card .t-stat{display:flex;gap:16px;font-size:11px;color:var(--t2);margin-top:10px}
.top-card .t-stat b{color:var(--t1);font-size:13px}
.teacher-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.t-card{background:var(--card);border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);transition:.28s;cursor:pointer;display:flex;flex-direction:row;padding:16px;gap:14px;align-items:flex-start}
.t-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-h)}
.t-card .t-photo{width:64px;height:64px;border-radius:16px;flex:none;overflow:hidden;background:var(--line)}
.t-card .t-photo img{width:100%;height:100%;object-fit:cover}
.t-card .t-info{flex:1;min-width:0;display:flex;flex-direction:column}
.t-card .t-name{display:flex;align-items:center;gap:8px;margin-bottom:2px}
.t-card .t-name h3{font-size:15px;font-weight:800}
.t-card .t-tag{font-size:11px;padding:2px 8px;border-radius:6px;background:#EEF3FF;color:var(--blue)}
.t-card .vt{font-size:12px;color:var(--t2)}
.t-card .t-quote{font-size:12px;color:var(--t2);line-height:1.6;margin:10px 0 0;border-left:3px solid var(--cyan);padding-left:10px;flex:1}
.t-card .t-ft{display:flex;align-items:center;justify-content:space-between;margin-top:12px;font-size:12px;color:var(--t2)}
.t-card .t-ft .rat{color:var(--orange);font-weight:700}
.interview{display:grid;grid-template-columns:1.5fr 1fr;gap:18px;margin-top:4px}
.int-main{background:var(--card);border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);display:flex;transition:.28s;cursor:pointer}
.int-main:hover{box-shadow:var(--shadow)}
.int-main .cover{width:250px;flex:none;position:relative;background-size:cover;background-position:center}
.int-main .badge{position:absolute;top:14px;left:14px;background:rgba(255,255,255,.92);color:var(--orange-d);font-size:11px;font-weight:700;padding:4px 10px;border-radius:999px}
.int-main .body{padding:20px 22px;flex:1}
.int-main h3{font-size:19px;font-weight:800;margin-bottom:4px}
.int-main .ftitle{font-size:12px;color:var(--t2);margin-bottom:10px}
.int-main p{font-size:13px;color:var(--t2);line-height:1.7;margin-bottom:14px}
.int-main .rel a{display:inline-block;font-size:12px;padding:5px 12px;border-radius:8px;background:#F4F6FB;color:var(--t1);margin:0 8px 8px 0;transition:.2s}
.int-main .rel a:hover{background:#EEF3FF;color:var(--blue)}
.int-list{display:flex;flex-direction:column;gap:12px}
.int-item{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 16px;cursor:pointer;transition:.25s;display:flex;gap:12px;align-items:center}
.int-item:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#D8E4FF}
.int-item .av{width:44px;height:44px;border-radius:12px;flex:none;background-size:cover;background-position:center;background-color:var(--line)}
.int-item h4{font-size:13.5px;font-weight:700;line-height:1.5}
.int-item .meta{font-size:11px;color:var(--t2);margin-top:3px}
.quote-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.q-item{display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s;cursor:pointer;text-decoration:none;color:inherit}
.q-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-h);border-color:#D8E4FF}
.q-item .op-cover{height:140px;background-size:cover;background-position:center;position:relative}
.q-item .op-cover .op-tag{position:absolute;top:10px;left:10px;background:rgba(255,255,255,.92);color:var(--blue-d);font-size:11px;font-weight:700;padding:3px 10px;border-radius:6px}
.q-item .op-body{padding:14px 16px 16px;text-align:left}
.q-item h4{font-size:14px;font-weight:700;line-height:1.5;color:var(--t1);margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.q-item .op-meta{font-size:12px;color:var(--t2);display:flex;align-items:center;gap:8px}
.q-item .op-meta .av{width:22px;height:22px;border-radius:50%;background-size:cover;background-position:center;background-color:var(--line);flex:none}
/* 旧版兜底：仍保留兼容 */
.q-item .av{width:46px;height:46px;border-radius:50%;margin:0 auto 10px;background-size:cover;background-position:center;background-color:var(--line)}
.q-item p{font-size:12.5px;color:var(--t2);line-height:1.7}
.q-item .who{font-size:12px;font-weight:700;margin-top:10px;color:var(--t1)}
.ts-cta{margin-top:40px;border-radius:var(--radius);background:linear-gradient(120deg,#FF7A45,#FF5277);color:#fff;padding:26px 34px;display:flex;align-items:center;justify-content:space-between;gap:20px;box-shadow:var(--shadow)}
.ts-cta h3{font-size:20px;font-weight:800;margin-bottom:6px}
.ts-cta p{font-size:13px;opacity:.92}
.ts-cta .btn{background:#fff;color:var(--t1)}
.ts-cta .btn:hover{transform:translateY(-2px)}
@media(max-width:1100px){.interview{grid-template-columns:1fr}}
@media(max-width:900px){
  .top3,.teacher-grid,.quote-strip{grid-template-columns:repeat(2,1fr)}
  .ts-stats{grid-template-columns:repeat(2,1fr);row-gap:16px}
  .int-main{flex-direction:column}
  .int-main .cover{width:100%;height:140px}
}
@media(max-width:680px){
  .top3,.teacher-grid,.quote-strip{grid-template-columns:1fr}
  .q-item .op-cover{height:180px}
  .page-hero .inner{padding:28px 24px 0}
  .ts-stats{padding:16px 24px}
  .ts-cta{flex-direction:column;text-align:center;padding:24px}
}

/* ===== 精选网课 mall 页（移植自静态 mall.html 内联样式）===== */
.mall-hero{border-radius:20px;overflow:hidden;background:linear-gradient(120deg,#FF7A45,#FF5277);color:#fff;padding:44px 40px 30px;margin-bottom:8px;box-shadow:var(--shadow);min-height:220px;box-sizing:border-box}
.mall-hero h1{font-size:30px;font-weight:800}
.mall-hero h1 .grad-text{background:linear-gradient(90deg,#fff,#FFE3D6);-webkit-background-clip:text;background-clip:text;color:transparent}
.mall-hero p{font-size:14px;opacity:.92;margin-top:8px;max-width:640px}
.mall-hero .m-stats{display:flex;gap:24px;margin-top:16px;font-size:12px;opacity:.92;flex-wrap:wrap}
.mall-hero .m-stats b{font-size:16px;font-weight:800;margin-right:4px}
.mall-sec{margin-top:8px}
.mall-sec .sec-head{margin:18px 0 0}
.goods-note{font-size:11px;color:var(--t2);margin-top:10px}
.mall-flow{display:flex;align-items:center;gap:10px;background:#FFF8EF;border:1px solid #FFE8C7;border-radius:12px;padding:12px 16px;font-size:12px;color:#8a5b1f;margin-top:18px;flex-wrap:wrap}
.mall-flow b{color:#6b4a12}
@media(max-width:680px){
  .mall-hero{padding:26px 22px 22px}
  .mall-flow{font-size:11px}
}

/* ===== 会员开通 membership 页（移植自静态 membership.html 内联样式）===== */
.crumb{font-size:13px;color:var(--t2);padding:16px 0}
.crumb a:hover{color:var(--blue)}
.mhero{border-radius:24px;overflow:hidden;background:linear-gradient(120deg,rgba(59,108,255,.88),rgba(123,92,255,.82)),url('/uploads/vip-hero-bg.png') center/cover no-repeat;color:#fff;text-align:center;padding:48px 24px;margin-bottom:32px;position:relative}
.mhero h1{font-size:32px;font-weight:800;margin-bottom:10px}
.mhero p{font-size:15px;opacity:.92}
.mhero .tag{display:inline-block;background:rgba(255,255,255,.2);padding:5px 16px;border-radius:999px;font-size:13px;margin-bottom:14px}
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:40px}
.plan{background:var(--card);border-radius:20px;border:1px solid var(--line);overflow:hidden;transition:.28s;display:flex;flex-direction:column}
.plan:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.plan.recommend{border:2px solid var(--blue);position:relative}
.plan.recommend::before{content:'推荐';position:absolute;top:-1px;right:20px;background:linear-gradient(90deg,var(--blue),var(--cyan));color:#fff;font-size:12px;font-weight:700;padding:4px 14px;border-radius:0 0 8px 8px}
.plan .head{padding:24px 20px 16px;text-align:center;border-bottom:1px solid var(--line)}
.plan .head h3{font-size:18px;font-weight:800;margin-bottom:8px}
.plan .price{display:flex;align-items:baseline;justify-content:center;gap:4px}
.plan .price .cur{font-size:14px;font-weight:600}
.plan .price .num{font-size:36px;font-weight:800}
.plan .price .unit{font-size:14px;color:var(--t2)}
.plan .price .old{text-decoration:line-through;color:var(--t2);font-size:13px;margin-left:6px}
.plan .body{padding:20px;flex:1;display:flex;flex-direction:column}
.plan .benefits{flex:1;list-style:none;margin-bottom:20px;padding:0}
.plan .benefits li{font-size:13px;color:var(--t1);padding:7px 0;display:flex;align-items:center;gap:8px}
.plan .benefits li::before{content:'';width:18px;height:18px;border-radius:50%;background:#E6F4EA;flex:none;background-image:url("data:image/svg+xml,%3Csvg width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2307C160' stroke-width='3' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M5 13l4 4L19 7'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:center}
.plan .benefits li.no{color:var(--t2)}
.plan .benefits li.no::before{background:#F0F2F5;background-image:url("data:image/svg+xml,%3Csvg width='10' height='10' viewBox='0 0 24 24' fill='none' stroke='%23999' stroke-width='3' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M6 6l12 12M18 6L6 18'/%3E%3C/svg%3E")}
.plan .btn{width:100%;justify-content:center}
.active-status{background:linear-gradient(120deg,#E8F5E9,#E3F2FD);border-radius:16px;padding:24px;display:flex;align-items:center;justify-content:space-between;margin-bottom:40px}
.active-status .info{display:flex;align-items:center;gap:14px}
.active-status .badge{background:linear-gradient(90deg,#07C160,#1FC8DB);color:#fff;font-size:12px;font-weight:700;padding:5px 14px;border-radius:999px}
.active-status .info p{font-size:13px;color:var(--t2);margin-top:2px}
.bnf-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:40px}
.bnf-item{background:var(--card);border-radius:14px;border:1px solid var(--line);padding:20px;text-align:center;transition:.25s}
.bnf-item:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.bnf-item .ico{width:48px;height:48px;border-radius:14px;margin:0 auto 12px;display:flex;align-items:center;justify-content:center;font-size:22px;color:#fff}
.bnf-item h4{font-size:14px;font-weight:700;margin-bottom:6px}
.bnf-item p{font-size:12px;color:var(--t2);line-height:1.5}
.faq{max-width:760px;margin:0 auto}
.faq-item{background:var(--card);border-radius:12px;border:1px solid var(--line);margin-bottom:10px;overflow:hidden}
.faq-q{padding:16px 20px;font-size:14px;font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:.2s}
.faq-q:hover{color:var(--blue)}
.faq-q .arrow{transition:.3s;font-size:18px;color:var(--t2)}
.faq-item.open .faq-q .arrow{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-item.open .faq-a{max-height:200px}
.faq-a p{padding:0 20px 16px;font-size:13px;color:var(--t2);line-height:1.6}
@media(max-width:900px){.plans{grid-template-columns:1fr}.bnf-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:680px){.bnf-grid{grid-template-columns:1fr 1fr}.active-status{flex-direction:column;text-align:center;gap:16px}}

/* ===== 教育前沿 frontier 页（移植自静态 frontier.html 内联样式）===== */
.front-hero{border-radius:20px;overflow:hidden;background:linear-gradient(120deg,#7B5CFF,#3B6CFF);color:#fff;padding:44px 40px 30px;margin-bottom:22px;box-shadow:var(--shadow);min-height:220px;box-sizing:border-box}
.front-hero h1{font-size:30px;font-weight:800}
.front-hero h1 .grad-text{background:linear-gradient(90deg,#fff,#C9E8FF);-webkit-background-clip:text;background-clip:text;color:transparent}
.front-hero p{font-size:14px;opacity:.92;margin-top:8px;max-width:640px}
.front-hero .f-stats{display:flex;gap:28px;margin-top:18px;font-size:13px;opacity:.9;flex-wrap:wrap}
.front-hero .f-stats b{font-size:18px;font-weight:800;margin-right:4px}
.front-cats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:20px}
.fcat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;cursor:pointer;transition:.25s;position:relative;overflow:hidden}
.fcat::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--cc,#3B6CFF);opacity:0;transition:.25s}
.fcat:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.fcat.on{border-color:var(--cc,#3B6CFF);box-shadow:var(--shadow-h)}
.fcat.on::before{opacity:1}
.fcat .ic{font-size:26px}
.fcat h4{font-size:15px;font-weight:800;margin-top:8px}
.fcat .cnt{font-size:11px;color:var(--t2);margin-top:3px}
.fcat .desc{font-size:12px;color:var(--t2);margin-top:6px;line-height:1.5;opacity:.9}
.front-title{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.front-title .dot{width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:17px}
.front-title h3{font-size:18px;font-weight:800}
.front-title .tagline{font-size:12px;color:var(--t2)}
.follow-card{background:linear-gradient(135deg,#7B5CFF,#3B6CFF);border-radius:var(--radius);padding:20px;color:#fff}
.follow-card h4{font-size:16px;font-weight:800;margin-bottom:8px}
.follow-card p{font-size:12px;opacity:.9;margin-bottom:14px;line-height:1.7}
.follow-card .qr{width:96px;height:96px;border-radius:10px;background:repeating-conic-gradient(#fff 0 25%,#e8ecf3 0 50%) 50%/14px 14px;margin:0 auto 10px;border:4px solid #fff}
.follow-card .note{text-align:center;font-size:11px;opacity:.9}
@media(max-width:900px){
  .front-cats{grid-template-columns:repeat(2,1fr)}
  .news-aside{grid-template-columns:1fr}
}
@media(max-width:680px){
  .front-cats{grid-template-columns:1fr 1fr;gap:10px}
  .front-hero{padding:26px 22px 22px}
  .front-hero .f-stats{flex-wrap:wrap;gap:14px}
}

/* ============ 教育资讯 /list 页（对齐静态原型 news.html） ============ */
.news-hero{display:grid;grid-template-columns:1.7fr 1fr;gap:16px;margin:20px 0}
.news-feat{position:relative;border-radius:var(--radius);overflow:hidden;min-height:280px;display:flex;align-items:flex-end;color:#fff;padding:24px;background-size:cover;background-position:center}
.news-feat .mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,0) 25%,rgba(0,0,0,.6))}
.news-feat .ft-body{position:relative;z-index:2}
.news-feat .cat{display:inline-block;background:rgba(255,255,255,.92);color:var(--orange-d);font-size:12px;font-weight:700;padding:4px 12px;border-radius:999px;margin-bottom:10px}
.news-feat h2{font-size:23px;font-weight:800;line-height:1.35;margin-bottom:10px;text-shadow:0 2px 12px rgba(0,0,0,.35)}
.news-feat p{font-size:13.5px;line-height:1.7;opacity:.92;margin-bottom:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-feat .ft-meta{display:flex;gap:14px;font-size:12px;opacity:.9}
.news-top{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px}
.news-top h4{font-size:15px;font-weight:800;margin-bottom:8px;display:flex;align-items:center;gap:8px}
.news-top h4 .bar{width:4px;height:15px;border-radius:3px;background:linear-gradient(180deg,var(--blue),var(--cyan))}
.news-top .nt{display:flex;gap:10px;align-items:flex-start;padding:9px 0;border-bottom:1px dashed var(--line);font-size:13.5px;color:var(--t1);line-height:1.5;transition:.2s}
.news-top .nt:last-child{border-bottom:none}
.news-top .nt:hover{color:var(--blue)}
.news-top .nt .idx{width:18px;height:18px;flex:none;border-radius:5px;background:#EEF3FF;color:var(--blue);font-size:11px;font-weight:800;display:flex;align-items:center;justify-content:center;margin-top:1px}
.news-top .nt.hot .idx{background:linear-gradient(135deg,#FF7A45,#FF5277);color:#fff}

.news-layout{display:grid;grid-template-columns:1fr 330px;gap:24px;margin-top:8px;align-items:start}
.news-cats{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.news-cats a{padding:7px 16px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:14px;color:var(--t2);cursor:pointer;transition:.2s}
.news-cats a.on,.news-cats a:hover{background:#EEF3FF;color:var(--blue);border-color:#D8E4FF}

.news-item{display:flex;gap:14px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px;margin-bottom:12px;transition:.25s}
.news-item:hover{box-shadow:var(--shadow);border-color:#D8E4FF;transform:translateY(-2px)}
.news-item .nc{width:70px;height:70px;border-radius:12px;flex:none;position:relative;overflow:hidden;display:flex;align-items:flex-end}
.news-item .nc .pic{position:absolute;inset:0;background-size:cover;background-position:center}
.news-item .nc .cat{position:relative;z-index:2;margin:0 0 5px 6px;display:inline-block;background:rgba(0,0,0,.45);color:#fff;font-size:10.5px;font-weight:700;padding:2px 7px;border-radius:6px}
.news-item .nc .ph{position:absolute;inset:0;display:flex;align-items:center;justify-content:center}
.news-item .nc .ph svg{width:28px;height:28px;stroke:rgba(255,255,255,.85);fill:none}
.news-card .cover .ph{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;z-index:0}
.news-card .cover .ph svg{width:40px;height:40px;stroke:rgba(255,255,255,.9);fill:none}
.news-item .nb{flex:1;min-width:0}
.news-item h3{font-size:16px;font-weight:700;line-height:1.5;color:var(--t1);margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.news-item .sum{font-size:13px;color:var(--t2);line-height:1.6;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-item .nm{display:flex;gap:14px;font-size:12px;color:var(--t2)}
.news-item .nm .src{color:var(--blue);font-weight:600}

.pagination{display:flex;gap:8px;justify-content:center;margin:24px 0;flex-wrap:wrap}
.pagination a,.pagination span{padding:8px 14px;border-radius:10px;background:#fff;border:1px solid var(--line);font-size:13px;color:var(--t2)}
.pagination a:hover{border-color:var(--blue);color:var(--blue)}
.pagination .current{background:linear-gradient(90deg,var(--blue),var(--cyan));color:#fff;border:none}

.news-aside .rank-card,.news-aside .special-card,.news-aside .subscribe-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin-bottom:16px}
.rank-card h4,.special-card h4{font-size:15px;font-weight:800;margin-bottom:10px;display:flex;align-items:center;gap:8px}
.rank-card h4 .bar,.special-card h4 .bar{width:4px;height:15px;border-radius:3px;background:linear-gradient(180deg,var(--blue),var(--cyan))}
.rank-item{display:flex;gap:10px;padding:9px 0;border-bottom:1px dashed var(--line)}
.rank-item:last-child{border-bottom:none}
.rank-item .rk{width:20px;height:20px;flex:none;border-radius:6px;background:#EEF3FF;color:var(--blue);font-size:12px;font-weight:800;display:flex;align-items:center;justify-content:center}
.rank-item h5{font-size:13px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rank-item .rm{font-size:11px;color:var(--t2);margin-top:3px}
.special-item{position:relative;height:74px;border-radius:12px;display:flex;align-items:flex-end;padding:12px;color:#fff;margin-bottom:10px;overflow:hidden;background-size:cover;background-position:center}
.special-item:last-child{margin-bottom:0}
.special-item .s-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,0) 30%,rgba(0,0,0,.5))}
.special-item b{position:relative;z-index:2;font-size:14px;text-shadow:0 2px 8px rgba(0,0,0,.4)}
.subscribe-card h4{font-size:15px;font-weight:800;margin-bottom:8px}
.subscribe-card p{font-size:12.5px;color:var(--t2);line-height:1.6;margin-bottom:12px}
.subscribe-card .qr{width:110px;height:110px;border-radius:12px;margin:0 auto 10px;background:repeating-linear-gradient(45deg,#eee 0 6px,#ddd 6px 12px);border:1px solid var(--line)}
.subscribe-card .note{text-align:center;font-size:12px;color:var(--t2)}

@media(max-width:860px){
  .news-hero{grid-template-columns:1fr}
  .news-layout{grid-template-columns:1fr}
  .news-aside{order:-1}
}

/* ========== 资讯详情正文统一排版：首行缩进两格 + 文字/图片穿插 ========== */
.detail-content{font-size:16px;line-height:1.9;color:#2a3346;word-break:break-word;}
.detail-content p{margin:0 0 1.15em;text-indent:2em;}
.detail-content img{max-width:100%;height:auto;display:block;margin:18px auto;border-radius:10px;box-shadow:0 4px 16px rgba(20,30,60,.08);}
.detail-content figure.art-fig{margin:22px auto;max-width:880px;text-align:center;background:#f7f9fc;border:1px solid #eef2f8;border-radius:14px;padding:10px;box-shadow:0 4px 16px rgba(20,30,60,.06);}
.detail-content figure.art-fig img{display:inline-block;margin:0 auto;max-width:100%;border-radius:10px;}
.detail-content figure.art-fig figcaption{display:block;margin-top:8px;font-size:13px;color:#8a94a6;line-height:1.5;}
.detail-content video{max-width:100%;border-radius:10px;margin:16px 0;background:#000;display:block;}
.detail-content blockquote{border-left:4px solid var(--blue,#1e88e5);background:#f0f7ff;margin:14px 0;padding:12px 18px;color:#555;border-radius:0 8px 8px 0;}
.detail-content a{color:#2563eb;text-decoration:underline;}
.detail-content ul,.detail-content ol{padding-left:28px;margin:10px 0;}
.detail-content li{margin-bottom:6px;}
.detail-content h2,.detail-content h3,.detail-content h4{margin:22px 0 10px;color:#1f2733;line-height:1.4;}

/* 列表默认图标：全局兜底，所有 .news-item 变体 / 所有屏通用 */
.news-item .nc .ph{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#EEF3FF 0%,#F6F9FF 50%,#E6F7FB 100%);}
.news-item .nc .ph svg{width:34px;height:34px;stroke:#3B6CFF;fill:none;opacity:.85}

/* 手机端：详情正文略微收敛，避免小屏拥挤 */
@media(max-width:680px){
  .detail-content{font-size:15px;line-height:1.8}
  .detail-content img{margin:14px auto}
}
.detail-content h2{font-size:20px;}
.detail-content h3{font-size:18px;}
.detail-content h4{font-size:16px;}