/* ===== 设计系统 · 何公子课堂 ===== */
/* 品牌色：荷青（主色，谐音"荷"）+ 月色金（辅助，会员/促销） */
:root{
  --bg:#fbfaf6;
  --surface:#f2f1eb;
  --surface-2:#e8e8e1;
  --ink:#17231f;
  --ink-2:#36483f;
  --muted:#6d7f77;
  --line:#dfe4df;
  --accent:#0e7c6b;
  --accent-ink:#0a5c50;
  --accent-soft:#e2f4ee;
  --accent-grad:linear-gradient(135deg,#0e7c6b,#12b88e);
  --gold:#b9831f;
  --gold-ink:#8a6112;
  --gold-soft:#fbf3e2;
  --wechat:#07c160;
  --alipay:#1677ff;
  --amber:#d99a2b;
  --price:#e8552e;
  --radius:18px;
  --radius-sm:10px;
  --shadow:0 10px 30px rgba(14,80,63,.08);
  --shadow-sm:0 4px 14px rgba(14,80,63,.06);
  --maxw:1140px;
}

*{box-sizing:border-box;margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","MiSans","Microsoft YaHei",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.65;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;
  min-height:100vh;display:flex;flex-direction:column;
  background-image:radial-gradient(1000px 420px at 15% -8%, rgba(14,124,107,.055) 0%, transparent 60%);
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
::selection{background:var(--accent-soft);color:var(--accent-ink)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:#d3d6e2;border-radius:8px;border:2px solid #fff}
::-webkit-scrollbar-thumb:hover{background:#b9bdd1}
::-webkit-scrollbar-track{background:transparent}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
@media(max-width:760px){.container{padding:0 18px}}
.muted{color:var(--muted)}
.small{font-size:13px}
.section{padding:76px 0}
.sec-head{text-align:center;max-width:640px;margin:0 auto 46px}
.sec-head h2{font-size:30px;font-weight:800;letter-spacing:.3px;position:relative;display:inline-block}
.sec-head h2::after{
  content:"";display:block;width:44px;height:4px;border-radius:4px;
  background:linear-gradient(90deg,var(--accent),#12b88e);
  margin:12px auto 0;
}
.sec-head p{color:var(--muted);margin-top:10px;font-size:15px}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;transition:.18s;white-space:nowrap;
}
.btn-primary{background:linear-gradient(135deg,var(--accent) 0%,#0fa384 60%,#1fc9a0 100%);color:#fff;box-shadow:0 6px 18px rgba(14,124,107,.28);border-color:rgba(255,255,255,.14)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 8px 24px rgba(14,124,107,.38)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(14,124,107,.24)}
.btn-ghost{background:transparent;color:var(--accent);border-color:var(--accent)}
.btn-ghost:hover{background:var(--accent-soft)}
.btn-wechat{background:var(--wechat);color:#fff}
.btn-wechat:hover{filter:brightness(.96)}
.btn-block{width:100%}
.btn[hidden]{display:none}

/* VIP 会员按钮（导航） */
.btn-vip{
  background:linear-gradient(135deg,#b9831f,#d99a2b);color:#fff;
  box-shadow:0 4px 12px rgba(185,131,31,.3);font-size:13px;padding:9px 16px;
}
.btn-vip:hover{filter:brightness(1.08);transform:translateY(-1px)}
.mobile-vip{color:var(--amber);font-weight:700}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:30;background:rgba(251,250,246,.9);
  backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid var(--line);
  box-shadow:0 2px 12px rgba(15,23,42,.04);
}
.site-header .btn-primary{box-shadow:none}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px;gap:24px}
.logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;letter-spacing:.3px;color:var(--ink)}
.logo:hover{color:var(--ink)}
.logo-mark{
  width:38px;height:38px;border-radius:11px;flex:none;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 12px rgba(14,124,107,.22);
}
.logo-mark svg{display:block}
.logo-mark-sm{width:30px;height:30px;border-radius:9px;box-shadow:none}
.logo-text{display:flex;align-items:baseline;gap:4px}
.logo-sub{color:var(--accent);font-weight:700;font-size:17px}
.nav-links{display:flex;gap:32px;flex:1;justify-content:center}
.nav-links a{color:var(--ink-2);font-weight:500;font-size:15px;position:relative;padding:8px 2px;transition:color .15s}
.nav-links a:hover{color:var(--accent)}
.nav-links a.active{color:var(--accent)}
.nav-links a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--accent);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-search{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:50%;background:var(--surface);
  border:none;cursor:pointer;
  color:var(--ink-2);font-size:15px;transition:.15s;
}
.nav-search:hover{background:var(--surface-2);color:var(--accent)}
/* 导航登录态：头像+昵称入口 */
.btn-auth{display:inline-flex;align-items:center;gap:8px}
.btn-auth-user{background:var(--surface);color:var(--ink-2);border:1px solid var(--line);box-shadow:none}
.btn-auth-user:hover{background:var(--accent-soft);color:var(--accent-ink);transform:none;filter:none}
.nav-avatar{width:24px;height:24px;border-radius:50%;object-fit:cover;flex:none}
.nav-avatar-txt{display:inline-flex;align-items:center;justify-content:center;background:var(--accent-soft);color:var(--accent);font-size:12px;font-weight:700}
.nav-toggle{
  display:none;background:transparent;border:1px solid var(--line);color:var(--ink-2);
  cursor:pointer;padding:6px 12px;border-radius:8px;font-size:14px;font-weight:600;
  align-items:center;gap:4px;
}
.nav-toggle:hover{border-color:var(--accent);color:var(--accent)}
.nav-toggle span{font-size:13px}

.mobile-menu{
  display:none;position:fixed;inset:56px 0 auto 0;z-index:29;
  background:#fff;border-bottom:1px solid var(--line);flex-direction:column;padding:14px 24px 22px;gap:2px;
  box-shadow:0 12px 24px rgba(15,23,42,.08);
}
.mobile-menu.open{display:flex}
.mobile-menu a{padding:14px 4px;font-weight:600;border-bottom:1px solid var(--line);color:var(--ink-2)}
.mobile-menu a.active{color:var(--accent)}
.mobile-menu .btn{margin-top:12px}
.mobile-search-btn{
  background:var(--surface);border:none;color:var(--ink-2);font-weight:600;
  font-size:14px;padding:12px;border-radius:8px;cursor:pointer;text-align:left;margin-top:12px;
}
.mobile-search-btn:hover{background:var(--surface-2)}

/* ===== 关于我 ===== */
.about-hero{
  background:
    radial-gradient(800px 320px at 8% -10%, #e2f4ee 0%, transparent 60%),
    radial-gradient(700px 300px at 95% 0%, #d9efdf 0%, transparent 55%),
    var(--bg);
  padding:80px 0 60px;
}
.about-hero-inner{display:flex;align-items:center;gap:40px;flex-wrap:wrap}
.about-avatar{
  width:140px;height:140px;border-radius:32px;
  background:linear-gradient(135deg,#0e7c6b,#12b88e);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:64px;font-weight:800;box-shadow:0 16px 40px rgba(99,102,241,.28);
  flex-shrink:0;
}
.about-id{flex:1;min-width:260px}
.about-id h1{font-size:40px;font-weight:800;letter-spacing:.5px}
.about-tagline{font-size:16px;color:var(--accent);font-weight:600;margin:6px 0 12px}
.about-bio{font-size:16px;color:var(--ink-2);max-width:640px;line-height:1.7;margin-bottom:22px}
.about-actions{display:flex;gap:12px;flex-wrap:wrap}

.section-soft{background:var(--surface)}

.about-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.about-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;
  transition:.2s;
}
.about-card:hover{box-shadow:var(--shadow);transform:translateY(-3px);border-color:transparent}
.about-ico{
  width:52px;height:52px;border-radius:14px;color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:16px;
}
.about-card h3{font-size:18px;font-weight:700;margin-bottom:8px}
.about-card p{font-size:14px;color:var(--muted);line-height:1.65}

.timeline{list-style:none;max-width:780px;margin:0 auto;position:relative;padding-left:24px;border-left:2px solid var(--line)}
.timeline li{position:relative;padding:10px 0 18px 18px;color:var(--ink-2);font-size:15px;line-height:1.7}
.timeline li::before{
  content:"";position:absolute;left:-9px;top:18px;width:14px;height:14px;border-radius:50%;
  background:#fff;border:3px solid var(--accent);
}
.timeline li b{color:var(--accent);margin-right:6px;font-weight:700}

.contact-row{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;max-width:900px;margin:0 auto}
.contact-card{
  display:flex;align-items:center;gap:14px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 20px;transition:.2s;color:var(--ink);
}
.contact-card:hover{box-shadow:var(--shadow);transform:translateY(-2px);border-color:transparent;color:var(--ink)}
.contact-ico{
  width:44px;height:44px;border-radius:12px;color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0;
}
.contact-card b{display:block;font-size:15px;font-weight:700;margin-bottom:2px}

/* ===== 课程筛选工具栏 ===== */
.course-toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:22px;flex-wrap:wrap}
.chips{display:flex;gap:10px;flex-wrap:wrap}
.chip{
  border:1px solid var(--line);background:var(--surface);color:var(--ink-2);
  padding:8px 16px;border-radius:999px;font-size:14px;font-weight:600;cursor:pointer;transition:.15s;
}
.chip:hover{border-color:var(--accent);color:var(--accent)}
.chip.active{background:var(--accent);border-color:var(--accent);color:#fff}
.sort-select{
  border:1px solid var(--line);background:var(--surface);color:var(--ink-2);
  padding:9px 14px;border-radius:10px;font-size:14px;cursor:pointer;
}

/* ===== 学员口碑 ===== */
.testi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.testi-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px;display:flex;flex-direction:column;gap:14px;transition:transform .25s,box-shadow .25s;will-change:transform}
.testi-card:hover{box-shadow:0 14px 32px rgba(14,80,63,.1);transform:translateY(-5px);border-color:transparent}
.testi-stars{color:var(--amber);font-size:15px;letter-spacing:1.5px}
.testi-text{font-size:14px;color:var(--ink-2);line-height:1.7;flex:1}
.testi-who{display:flex;align-items:center;gap:10px}
.testi-avatar{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,#0e7c6b,#12b88e);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px}
.testi-who small{font-size:12px}

/* ===== FAQ 手风琴 ===== */
.faq-list{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.faq-q{
  width:100%;text-align:left;background:none;border:none;cursor:pointer;
  padding:18px 22px;font-size:16px;font-weight:600;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.faq-ico{font-size:22px;color:var(--accent);transition:transform .2s;line-height:1}
.faq-item.open .faq-ico{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;padding:0 22px;color:var(--ink-2);font-size:14px;line-height:1.7}
.faq-item.open .faq-a{max-height:200px;padding:0 22px 18px}

/* ===== 首页 CTA 横幅（container 统一边距 + 圆角卡片，与 banner 同构） ===== */
.cta-band{padding:14px 0 34px}
.cta-inner{
  background:linear-gradient(120deg,#143c34 0%,#195046 100%);
  color:#fff;border-radius:26px;padding:38px 42px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  box-shadow:0 18px 42px rgba(20,60,52,.14);position:relative;overflow:hidden;
}
.cta-inner::after{
  content:"";position:absolute;right:32px;top:0;width:150px;height:2px;
  background:linear-gradient(90deg,transparent,rgba(228,183,96,.85));pointer-events:none;
}
.cta-inner > *{position:relative;z-index:1}
.cta-inner h2{font-size:26px;font-weight:800}
.cta-inner p{opacity:.92;margin-top:6px}
.btn-light{background:#fff;color:#0e7c6b;font-weight:700}
.btn-light:hover{filter:brightness(.96)}

/* ===== 首页 V2 · 个人品牌编辑部 ===== */
.home-hero{padding:72px 0 54px;position:relative;overflow:hidden}
.home-hero::before{content:"";position:absolute;width:520px;height:520px;border-radius:50%;right:-230px;top:-250px;background:rgba(14,124,107,.055);pointer-events:none}
.home-hero-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(340px,.85fr);gap:70px;align-items:center}
.home-hero-copy{padding:20px 0}
.eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:9px;color:var(--accent);font-size:12px;font-weight:800;letter-spacing:1.7px;text-transform:uppercase}
.eyebrow i{width:24px;height:1px;background:var(--accent);display:block}
.home-hero h1{font-size:54px;line-height:1.15;letter-spacing:-1.8px;margin:22px 0 20px;font-weight:850}
.home-hero h1 span{color:var(--accent)}
.home-hero-copy>p{max-width:620px;color:var(--ink-2);font-size:17px;line-height:1.85}
.home-hero-actions{display:flex;align-items:center;gap:26px;margin-top:30px}
.text-link{display:inline-flex;align-items:center;gap:8px;color:var(--ink);font-size:14px;font-weight:750;border-bottom:1px solid rgba(23,35,31,.28);padding-bottom:4px;transition:.2s}
.text-link:hover{color:var(--accent);border-color:var(--accent);gap:12px}
.home-proof{display:flex;gap:22px;margin-top:38px;padding-top:22px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}
.home-proof span{display:flex;gap:6px}.home-proof b{color:var(--ink);font-weight:800}
.home-hero-visual{min-height:450px;border-radius:32px;background:#143c34;color:#fff;position:relative;overflow:hidden;padding:36px;box-shadow:0 30px 70px rgba(20,60,52,.18)}
.home-hero-visual::before{content:"";position:absolute;inset:0;background:linear-gradient(145deg,rgba(255,255,255,.05),transparent 45%),radial-gradient(circle at 85% 15%,rgba(72,202,163,.28),transparent 30%)}
.visual-label{position:relative;z-index:2;font-size:10px;letter-spacing:3px;opacity:.65}
.visual-monogram{position:absolute;right:28px;top:25px;width:58px;height:58px;border:1px solid rgba(255,255,255,.32);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:25px;font-family:serif}
.visual-title{position:absolute;left:36px;bottom:70px;z-index:2;font-size:43px;line-height:1.08;font-weight:850;letter-spacing:1px}
.visual-note{position:absolute;left:38px;bottom:32px;font-size:11px;letter-spacing:2px;color:#a8d6c8}
.visual-orbit{position:absolute;border:1px solid rgba(168,214,200,.25);border-radius:50%}
.orbit-one{width:280px;height:280px;right:-60px;top:90px}.orbit-two{width:160px;height:160px;right:38px;top:150px;border-color:rgba(217,154,43,.35)}
.path-section{padding:34px 0 72px}
.path-section>.container>.section-kicker{margin-bottom:20px}
.path-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.path-card{position:relative;padding:32px 34px 34px;border-right:1px solid var(--line);transition:.25s;min-height:245px}
.path-card:last-child{border-right:0}.path-card:hover{background:#fff;transform:translateY(-4px);box-shadow:0 18px 42px rgba(14,80,63,.07)}
.path-no{position:absolute;right:24px;top:24px;color:#a6b1ac;font-size:12px;font-weight:700}
.path-icon{width:46px;height:46px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--accent);background:var(--accent-soft);margin-bottom:25px}
.path-card h3{font-size:21px;margin-bottom:10px}.path-card p{font-size:14px;line-height:1.7;color:var(--muted);max-width:270px}
.path-go{display:inline-block;margin-top:20px;font-size:13px;font-weight:750;color:var(--accent)}
.home-courses{background:#f0f3ef}
.editorial-head{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;margin-bottom:36px}
.editorial-head h2{font-size:34px;line-height:1.28;letter-spacing:-.5px;margin-top:10px}.editorial-head.compact{margin-bottom:28px}.editorial-head.compact h2{font-size:30px}
.home-course-grid{grid-template-columns:repeat(3,1fr);gap:26px}
.home-course-grid .course-cover{height:190px}.home-course-grid .course-body{padding:20px}.home-course-grid .course-body h3{font-size:18px}
.founder-section{background:#173b34;color:#fff;padding:74px 0}
.home-founder-section{background:var(--bg);padding:78px 0 40px}
.home-founder-card{background:#173b34;color:#fff;border-radius:30px;padding:62px 66px;box-shadow:0 24px 58px rgba(20,60,52,.14);overflow:hidden;position:relative}
.home-founder-card::after{content:"";position:absolute;right:-75px;bottom:-105px;width:250px;height:250px;border:1px solid rgba(157,216,199,.12);border-radius:50%;pointer-events:none}
.founder-grid{display:grid;grid-template-columns:190px 1fr .8fr;gap:52px;align-items:center}
.founder-mark{width:180px;height:210px;background:#e4b760;color:#173b34;border-radius:90px 90px 18px 18px;display:flex;flex-direction:column;align-items:center;justify-content:center;box-shadow:inset 0 0 0 1px rgba(255,255,255,.3)}
.founder-mark span{font-family:serif;font-size:68px;line-height:1}.founder-mark small{font-size:10px;letter-spacing:3px;margin-top:15px}
.founder-copy .section-kicker{color:#9dd8c7}.founder-copy h2{font-size:32px;line-height:1.35;margin:13px 0 16px}.founder-copy p{color:rgba(255,255,255,.72);line-height:1.8;font-size:14px;margin-bottom:18px;max-width:560px}.founder-copy .text-link{color:#fff;border-color:rgba(255,255,255,.35)}
.founder-quote{border-left:1px solid rgba(255,255,255,.2);padding:24px 0 24px 38px;font-family:serif;font-size:23px;line-height:1.75;color:#d8e7e2}
.home-testimonials{background:var(--bg)}
.home-testimonials .testi-grid{grid-template-columns:repeat(3,1fr)}
.home-testimonials .testi-card{box-shadow:none;background:transparent;border-radius:0;border-width:1px 0 0;padding:26px 5px;margin-right:24px}
.home-testimonials .testi-stars{color:var(--gold);font-size:12px}
.section-kicker.light{color:#b9e4d7;margin-bottom:7px}

/* ===== 课程详情增强 ===== */
.preview-tag{margin-left:8px;font-size:11px;font-weight:700;color:#fff;background:#07C160;padding:2px 8px;border-radius:999px;vertical-align:middle}
.preview-note{margin:10px 2px 0}
.instructor-card{
  display:flex;align-items:center;gap:18px;flex-wrap:wrap;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px;margin-top:30px;
}
.inst-avatar{width:56px;height:56px;border-radius:16px;background:linear-gradient(135deg,#0e7c6b,#12b88e);color:#fff;display:flex;align-items:center;justify-content:center;font-size:26px;font-weight:800;flex-shrink:0}
.inst-info{flex:1;min-width:220px}
.inst-name{font-size:17px;font-weight:700}
.inst-name span{font-size:13px;color:var(--accent);font-weight:600;margin-left:8px}
.inst-info p{font-size:14px;color:var(--muted);margin-top:6px;line-height:1.6}
.inst-stats{display:flex;gap:22px}
.inst-stats div{text-align:center}
.inst-stats b{display:block;font-size:18px;font-weight:800;color:var(--ink)}
.inst-stats span{font-size:12px;color:var(--muted)}
.related{margin-top:40px}
.related h3{font-size:20px;font-weight:700;margin-bottom:18px}

/* ===== 个人中心 ===== */
.pc-layout{display:grid;grid-template-columns:240px 1fr;gap:28px;align-items:start}
.pc-sidebar{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 18px;position:sticky;top:88px}
.pc-user{text-align:center;padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:14px}
.pc-avatar{width:64px;height:64px;border-radius:50%;margin:0 auto 10px;background:var(--surface);color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:26px;font-weight:800;overflow:hidden;border:1px solid var(--line)}
.pc-avatar .av-img{border-radius:50%;object-fit:cover;display:block;width:100%;height:100%}
.pc-uname{font-size:17px;font-weight:700}
/* 账号信息标签（UID / 会员等级）：统一大小、简洁、同款风格 */
.account-tag{display:inline-flex;align-items:center;vertical-align:middle;height:20px;padding:0 8px;font-size:11px;font-weight:700;line-height:1;border-radius:6px;letter-spacing:.2px;white-space:nowrap}
.account-tag.uid{color:var(--ink-2);background:var(--surface-2);border:1px solid var(--line)}
.account-tag.member{color:#fff;background:linear-gradient(135deg,var(--accent),#12b88e);border:1px solid rgba(255,255,255,.2)}
.account-tag.member.basic{background:#129b84}
.account-tag.member.year{background:#0e7c6b}
.account-tag.member.forever{background:#0a8a74}
.account-tag.member.partner{background:linear-gradient(135deg,#13b892,#17c9a0)}
/* 兼容旧引用：保留 member-badge 类名但不引入杂色/星标 */
.member-badge{display:inline-flex;align-items:center;vertical-align:middle;height:20px;padding:0 8px;font-size:11px;font-weight:700;line-height:1;border-radius:6px;letter-spacing:.2px;white-space:nowrap;color:#fff}
.pc-urole{font-size:12px;color:var(--muted);margin-top:2px}
/* 资料主页：头像 + 昵称编辑 */
.pc-profile-head{display:flex;align-items:center;gap:20px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;margin-bottom:16px}
.pc-avatar-edit{display:flex;flex-direction:column;align-items:center;gap:8px;flex:none}
.pc-avatar-edit .pc-avatar{margin:0}
.pc-avatar-btn{font-size:12px;padding:6px 12px}
.pc-profile-info{flex:1;min-width:0}
.pc-name-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.pc-name-row b{font-size:20px}
.pc-name-edit{display:flex;flex-direction:column;gap:10px;align-items:flex-start}
.pc-name-edit .field{max-width:260px}
.pc-name-edit .row{gap:10px}
@media(max-width:520px){.pc-profile-head{flex-direction:column;align-items:flex-start;gap:14px}}
.pc-nav{display:flex;flex-direction:column;gap:4px}
.pc-nav-group{margin-bottom:6px}
.pc-nav-title{font-size:11px;font-weight:600;color:var(--muted);letter-spacing:1px;padding:10px 14px 6px}
.pc-nav-item{padding:11px 14px;border-radius:10px;color:var(--ink-2);font-weight:600;font-size:14px;cursor:pointer;transition:.15s;display:block}
.pc-nav-item:hover{background:var(--surface)}
.pc-nav-item.active{background:var(--accent-soft);color:var(--accent)}
.pc-content h2{font-size:24px;font-weight:800;margin-bottom:18px}
.pc-cards{display:flex;gap:14px;margin-bottom:24px;flex-wrap:wrap}
.pc-stat{flex:1;min-width:120px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;text-align:center}
.pc-stat b{display:block;font-size:24px;font-weight:800;color:var(--accent)}
.pc-stat span{font-size:13px;color:var(--muted)}
.pc-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.pc-box h3{font-size:17px;margin-bottom:14px}
.pc-info{list-style:none}
.pc-info li{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--line);font-size:14px}
.pc-info li:last-child{border-bottom:none}
.pc-info span{color:var(--muted)}
.pc-courses{display:flex;flex-direction:column;gap:14px}
.pc-course{display:flex;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;cursor:pointer;transition:.2s}
.pc-course:hover{box-shadow:var(--shadow);transform:translateY(-2px);border-color:transparent}
.pc-course-body{flex:1;padding:16px 18px;display:flex;flex-direction:column;gap:8px;justify-content:center}
.pc-course-body h3{font-size:16px;font-weight:700}
.pc-progress{height:8px;background:var(--surface-2);border-radius:999px;overflow:hidden}
.pc-progress-bar{height:100%;background:var(--accent);border-radius:999px;transition:width .3s}
.pc-course-meta{font-size:12px;color:var(--muted)}
.pc-orders{display:flex;flex-direction:column;gap:12px}
.pc-order{display:flex;align-items:center;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;flex-wrap:wrap}
.pc-order-main{flex:1;min-width:180px}
.pc-order-title{font-size:15px;font-weight:700}
.pc-order-sub{font-size:12px;color:var(--muted);margin-top:2px}
.pc-order-pay{font-size:13px;color:var(--ink-2)}
.pc-order-amt{font-size:18px;font-weight:800;color:var(--price)}
.pc-setting-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 0;border-bottom:1px solid var(--line)}
.pc-setting-row:last-child{border-bottom:none}
.pc-setting-row p{margin-top:4px}
.pc-logout{margin-top:18px}

/* ===== 搜索弹窗 ===== */
.search-modal .search-box{max-width:560px;padding:0;overflow:hidden}
.search-bar{display:flex;align-items:center;gap:10px;padding:16px 18px;border-bottom:1px solid var(--line)}
.search-ico{font-size:18px}
.search-input{border:none;background:none;padding:6px 0;font-size:16px;flex:1}
.search-input:focus{outline:none}
.search-results{max-height:60vh;overflow:auto;padding:8px}
.search-empty{padding:24px;text-align:center}
.search-group{padding:8px 0}
.search-label{font-size:12px;font-weight:700;color:var(--muted);padding:6px 12px}
.search-item{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:10px;color:var(--ink);transition:.15s}
.search-item:hover{background:var(--surface)}
.si-cover{width:36px;height:36px;border-radius:9px;flex-shrink:0;display:flex;align-items:center;justify-content:center;color:#fff;font-size:15px}
.si-text{flex:1}
.si-text b{display:block;font-size:15px;font-weight:600}
.si-text small{font-size:12px;color:var(--muted)}

/* ===== 轮播 Banner ===== */
.banner-sec{padding:24px 0 8px}
.banner{position:relative;border-radius:22px;overflow:hidden;height:280px;box-shadow:0 18px 44px rgba(14,80,63,.16)}
.banner-slide{
  position:absolute;inset:0;opacity:0;transition:opacity .55s ease;pointer-events:none;
  display:flex;align-items:center;padding:0 56px;color:#fff;
}
.banner-slide.active{opacity:1;pointer-events:auto;z-index:1}
/* 左侧深色蒙层：保证文字可读，盖住 AI 水印 */
.banner-shade{
  position:absolute;left:0;right:0;top:0;bottom:0;z-index:1;pointer-events:none;
  background:linear-gradient(90deg,rgba(0,0,0,.55) 0%,rgba(0,0,0,.25) 50%,transparent 80%);
}
.banner-content{position:relative;z-index:2;max-width:520px}
.banner-tag{display:inline-block;font-size:12px;font-weight:600;background:rgba(255,255,255,.2);padding:4px 12px;border-radius:999px;margin-bottom:12px;backdrop-filter:blur(4px);border:1px solid rgba(255,255,255,.25)}
.banner-title{font-size:34px;font-weight:800;line-height:1.2;margin-bottom:8px;letter-spacing:.5px}
.banner-sub{font-size:15px;opacity:.92;margin-bottom:14px}
.banner-price{margin-bottom:18px}
.banner-price b{font-size:26px;font-weight:800;margin-right:8px;color:var(--price)}
.banner-price s{opacity:.75;font-size:14px}
.banner .btn-light{
  display:inline-flex;align-items:center;background:#fff;color:var(--ink);font-weight:700;
  padding:10px 22px;border-radius:999px;font-size:14px;transition:.15s;
}
.banner .btn-light:hover{transform:translateY(-1px);box-shadow:0 6px 16px rgba(0,0,0,.15)}
.banner-deco{
  position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
  background:rgba(255,255,255,.14);
}
.banner-deco::after{
  content:"";position:absolute;right:60px;bottom:-80px;width:200px;height:200px;border-radius:50%;background:rgba(255,255,255,.10);
}
.banner-arrow{
  position:absolute;top:50%;transform:translateY(-50%);z-index:3;width:38px;height:38px;border-radius:50%;
  background:rgba(255,255,255,.9);border:none;font-size:20px;color:var(--ink);cursor:pointer;transition:.15s;
  display:flex;align-items:center;justify-content:center;
}
.banner-arrow:hover{background:#fff;transform:translateY(-50%) scale(1.06)}
.banner-arrow.prev{left:14px}
.banner-arrow.next{right:14px}
.banner-dots{position:absolute;left:0;right:0;bottom:14px;display:flex;justify-content:center;gap:8px;z-index:3}
.banner-dots .dot{width:8px;height:8px;border-radius:999px;background:rgba(255,255,255,.55);cursor:pointer;transition:.2s}
.banner-dots .dot.active{width:22px;background:#fff}

/* ===== 分类入口区（移动端原生） ===== */
.cat-sec{padding:32px 0 24px}
.cat-grid{
  display:grid;grid-template-columns:repeat(8,1fr);gap:18px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 18px;
}
.cat-cell{
  display:flex;flex-direction:column;align-items:center;gap:8px;
  text-decoration:none;cursor:pointer;transition:transform .2s;
}
.cat-cell:hover{transform:translateY(-3px)}
.cat-ico{
  width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  font-size:24px;color:#fff;box-shadow:0 6px 14px rgba(14,80,63,.12);
}
.cat-name{font-size:13px;color:var(--ink-2);font-weight:500}
@media(max-width:980px){.cat-grid{grid-template-columns:repeat(8,1fr);gap:14px;padding:20px 12px}}
@media(max-width:760px){
  .cat-grid{grid-template-columns:repeat(4,1fr);gap:10px;padding:18px 12px;border-radius:14px}
  .cat-ico{width:48px;height:48px;font-size:22px;border-radius:12px}
  .cat-name{font-size:12px}
}

/* ===== 会员中心 ===== */
.member-cta{
  background:linear-gradient(120deg,#b9831f 0%,#d99a2b 55%,#e8a93d 100%);
  border-radius:0;padding:0;
}
.member-cta-inner{
  display:flex;align-items:center;gap:20px;padding:30px 24px;color:#fff;flex-wrap:wrap;
}
.mcta-badge{font-size:36px;line-height:1}
.mcta-text{flex:1;min-width:200px}
.mcta-text h3{font-size:22px;font-weight:800;margin-bottom:4px}
.mcta-text p{font-size:14px;opacity:.9}
.member-cta .btn-light{
  background:#fff;color:var(--ink);font-weight:700;padding:11px 22px;border-radius:999px;font-size:14px;
}
.member-cta .btn-light:hover{transform:translateY(-1px)}
@media(max-width:520px){
  .member-cta-inner{padding:24px 18px}
  .mcta-text h3{font-size:18px}
}
.member-check-card{
  background:linear-gradient(135deg,#fbf3e2,#f7e6bd);border:1px solid #ecd9a4;
  border-radius:var(--radius-sm);padding:18px 20px;text-align:center;margin-bottom:14px;
}
.member-check-name{font-size:18px;font-weight:800}
.member-check-price{margin:8px 0 4px}
.member-check-price b{font-size:36px;font-weight:800;color:var(--amber)}
.member-check-price s{color:var(--muted);font-size:14px;margin-left:6px}

.member-hero{padding:56px 0 40px;text-align:center}
.member-hero .small{font-size:13px;color:var(--accent);font-weight:700;letter-spacing:1px;text-transform:uppercase;display:block;margin-bottom:10px}
.member-hero h1{font-size:38px;font-weight:800}
.member-hero h1 .hl{color:var(--accent)}
.member-hero p{color:var(--muted);margin-top:10px}
.member-status-wrap{max-width:560px;margin:0 auto 36px}
.member-status{
  display:flex;align-items:center;gap:14px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:18px 22px;
}
.member-status.on{background:linear-gradient(135deg,#fbf3e2,#f7e6bd);border-color:#ecd9a4}
.ms-badge{
  width:46px;height:46px;border-radius:12px;flex:none;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#b9831f,#d99a2b);color:#fff;font-weight:800;font-size:15px;
}
.member-status.on .ms-badge{background:linear-gradient(135deg,#8a6112,#b45309)}
.member-status b{display:block;font-size:16px}
.member-status span{font-size:13px;color:var(--muted)}
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;max-width:880px;margin:0 auto}
.plan-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 22px;text-align:center;transition:.2s;
}
.plan-card:hover{box-shadow:var(--shadow);transform:translateY(-3px);border-color:var(--accent)}
.plan-card.hot{border:2px solid var(--accent);box-shadow:0 10px 26px rgba(14,124,107,.14)}
.plan-hot{
  position:absolute;top:-12px;left:50%;transform:translateX(-50%);
  background:var(--accent);color:#fff;font-size:12px;font-weight:700;padding:4px 14px;border-radius:999px;
}
.plan-tag{font-size:13px;color:var(--muted);font-weight:600;margin-bottom:6px}
.plan-name{font-size:20px;font-weight:800;margin-bottom:12px}
.plan-price{margin-bottom:12px}
.plan-price b{font-size:38px;font-weight:800;color:var(--price)}
.plan-price s{color:var(--muted);font-size:14px;margin-left:6px}
.plan-desc{font-size:13px;color:var(--muted);margin-bottom:18px}
.benefit-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;max-width:880px;margin:0 auto}
.benefit{background:var(--surface);border-radius:var(--radius);padding:20px 18px;display:flex;flex-direction:column;gap:8px;align-items:flex-start}
.benefit-ico{width:44px;height:44px;border-radius:12px;background:var(--accent-soft);color:var(--accent);display:flex;align-items:center;justify-content:center}
.benefit b{font-size:15px;display:block}
.benefit span{font-size:12px;color:var(--muted)}
.member-line{margin:6px 0 2px;font-size:14px;color:var(--ink-2)}
.member-line b{color:var(--amber);font-size:18px}
.member-line .saving{display:inline-block;background:var(--amber);color:#fff;font-size:12px;font-weight:600;padding:1px 8px;border-radius:999px;margin-left:6px}
.member-hint{display:inline-block;margin-left:6px;font-size:11px;color:var(--amber);background:#fbf3e2;padding:2px 8px;border-radius:999px;font-weight:600}
.pc-member{
  display:flex;align-items:center;gap:12px;background:linear-gradient(135deg,#fbf3e2,#f7e6bd);
  border:1px solid #ecd9a4;border-radius:var(--radius);padding:14px 18px;transition:.15s;
}
.pc-member:hover{transform:translateY(-1px)}
.pc-member-badge{
  width:40px;height:40px;border-radius:10px;flex:none;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#b9831f,#d99a2b);color:#fff;font-weight:800;
}
.pc-member b{display:block;font-size:14px}
.pc-member span{font-size:12px;color:var(--muted)}
.pc-member em{font-style:normal;font-size:12px;color:var(--accent);margin-left:auto;font-weight:600}

@media(max-width:980px){
  .plan-grid{grid-template-columns:repeat(2,1fr);max-width:620px}
  .benefit-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:760px){
  .banner{height:210px;padding:0}
  .banner-slide{padding:0 42px}
  .banner-title{font-size:24px}
  .banner-sub{font-size:13px}
  .banner-price b{font-size:20px}
  .banner-deco{width:160px;height:160px;right:-40px;top:-40px}
  .banner-arrow{width:30px;height:30px;font-size:16px}
  .plan-grid{grid-template-columns:1fr;max-width:420px}
  .benefit-grid{grid-template-columns:1fr 1fr}
  .member-hero{padding:36px 0 28px}
  .member-hero h1{font-size:28px}
}

/* ===== Hero（保留备用） ===== */
.hero{
  position:relative;overflow:hidden;padding:64px 0 56px;
  background:
    radial-gradient(900px 360px at 12% -10%, #e2f4ee 0%, transparent 60%),
    radial-gradient(800px 340px at 95% 0%, #d9efdf 0%, transparent 55%),
    var(--bg);
}
.hero::after{
  content:"";position:absolute;right:-120px;bottom:-140px;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle,#efe9ff 0%,transparent 65%);opacity:.7;pointer-events:none;
}
.hero .container{position:relative;z-index:1}
.hero-inner{max-width:760px}
.hero h1{font-size:40px;line-height:1.22;font-weight:800;letter-spacing:.3px}
.hero h1 .hl{color:var(--accent)}
.hero h1 .small{font-size:18px;font-weight:600;color:var(--muted);display:block;margin-bottom:6px;letter-spacing:1px;text-transform:uppercase}
.hero p.lead{font-size:17px;color:var(--ink-2);margin:14px 0 24px;max-width:580px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.badges{display:flex;gap:8px;flex-wrap:wrap;margin-top:22px}
.badge{font-size:12px;color:var(--accent-ink);background:var(--accent-soft);padding:6px 12px;border-radius:999px;font-weight:600}
.hero-stats{display:flex;gap:28px;margin-top:30px;padding-top:24px;border-top:1px solid var(--line);max-width:540px}
.hero-stats .num{font-size:22px;font-weight:800}
.hero-stats .lbl{font-size:12px;color:var(--muted)}

/* ===== 课程网格 ===== */
.course-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.course-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:transform .25s,box-shadow .25s;cursor:pointer;display:flex;flex-direction:column;
  will-change:transform;
}
.course-card:hover{box-shadow:0 16px 36px rgba(14,80,63,.12);transform:translateY(-6px);border-color:transparent}
.course-card:hover .play{background:var(--accent);color:#fff;transform:scale(1.1)}
.course-cover{height:148px;position:relative;transition:.25s}
.course-card:hover .course-cover{filter:saturate(1.06)}
/* 封面模板：分类角标 + 大字装饰 + 光晕 */
.cover-tpl{display:flex;align-items:flex-end;justify-content:flex-start;overflow:hidden;position:relative;background-color:#173b34}
.cover-tpl .cover-ch{transition:transform .3s ease}
.course-card:hover .cover-ch{transform:scale(1.06)}
.cover-cat{
  position:absolute;top:12px;left:12px;z-index:3;font-size:11px;font-weight:600;color:#fff;
  background:rgba(255,255,255,.22);padding:3px 10px;border-radius:999px;letter-spacing:.5px;
  backdrop-filter:blur(4px);
}
.cover-ch{
  position:relative;z-index:2;font-size:44px;font-weight:800;color:rgba(255,255,255,.92);
  text-shadow:0 2px 10px rgba(0,0,0,.12);letter-spacing:2px;line-height:1;
}
/* 图片封面：底部黑色蒙层遮水印+让标题文字可读 */
.cover-shade{
  position:absolute;left:0;right:0;bottom:0;height:65%;
  background:linear-gradient(to top,rgba(0,0,0,.55) 0%,rgba(0,0,0,.2) 60%,transparent 100%);
  z-index:1;pointer-events:none;
}
.cover-title{
  position:relative;z-index:2;padding:0 14px 14px;font-size:18px;font-weight:800;color:#fff;
  letter-spacing:.5px;line-height:1.3;text-shadow:0 2px 8px rgba(0,0,0,.4);
  width:100%;
}
.cover-tpl--img{align-items:flex-end}
.cover-tpl--img .play{z-index:3}
.cover-deco{
  position:absolute;right:-30px;bottom:-30px;width:110px;height:110px;border-radius:50%;
  background:rgba(255,255,255,.14);
}
.cover-deco::after{
  content:"";position:absolute;right:34px;bottom:-18px;width:72px;height:72px;border-radius:50%;background:rgba(255,255,255,.10);
}
.cover-tpl .play{background:rgba(255,255,255,.95);color:var(--accent)}
.detail-cover.cover-tpl{display:flex;align-items:center;justify-content:center}
.detail-cover .cover-inner{position:relative;z-index:3;text-align:center;padding:40px 24px}
.detail-cover .cover-inner h1{color:#fff;text-shadow:0 2px 14px rgba(0,0,0,.18);font-size:30px}
.course-cover .play{position:absolute;right:12px;bottom:12px;width:38px;height:38px;border-radius:50%;
  background:rgba(255,255,255,.9);display:flex;align-items:center;justify-content:center;font-size:15px;color:var(--accent);transition:.2s}
.course-body{padding:16px 16px 18px;display:flex;flex-direction:column;gap:8px;flex:1}
.course-body h3{font-size:16px;font-weight:700;line-height:1.35}
@media(max-width:760px){
  .course-grid{gap:16px}
  .course-card{border-radius:14px}
  /* 课程页工具栏紧凑化（避免 chip 孤行+排序占整行） */
  .course-toolbar{flex-direction:column;align-items:stretch;gap:10px;margin-bottom:16px}
  .chips{flex-wrap:nowrap;overflow-x:auto;padding-bottom:4px;margin:0 -4px;scrollbar-width:none;-webkit-overflow-scrolling:touch}
  .chips::-webkit-scrollbar{display:none}
  .chip{flex:none;padding:7px 14px;font-size:13px;white-space:nowrap}
  .sort-select{width:100%;padding:10px 14px}
  .course-cover{height:170px}
  .course-body{padding:14px 14px 16px;gap:10px}
  .course-body h3{font-size:18px}
  .course-body .desc{font-size:13px;line-height:1.55}
  .course-meta{font-size:13px}
  .price{font-size:20px}
}
.course-body .desc{font-size:13px;color:var(--muted);flex:1}
.course-meta{display:flex;align-items:center;flex-wrap:wrap;gap:6px 10px;font-size:11px;color:var(--muted)}
.meta-item{display:inline-flex;align-items:center;gap:4px;color:var(--ink-2);font-weight:500;white-space:nowrap}
.meta-item svg{flex:none}
.meta-item span{font-variant-numeric:tabular-nums}
.tags{display:flex;gap:6px;flex-wrap:wrap}
.tag{font-size:11px;color:var(--accent-ink);background:var(--accent-soft);padding:3px 9px;border-radius:999px}
.course-foot{display:flex;align-items:center;justify-content:space-between;margin-top:4px}
.price{color:var(--price);font-weight:800;font-size:18px}
.price s{color:var(--muted);font-weight:400;font-size:13px;margin-left:6px}

/* ===== 功能特性 ===== */
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.feature{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;
  transition:.2s;
}
.feature:hover{background:#fff;box-shadow:var(--shadow-sm);transform:translateY(-2px)}
.feature .ico{width:46px;height:46px;border-radius:12px;background:var(--accent-soft);color:var(--accent);
  display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:14px}
.feature h4{font-size:17px;margin-bottom:6px}
.feature p{font-size:14px;color:var(--muted)}

/* ===== 分销入口 ===== */
.promo-band{
  background:linear-gradient(120deg,#0e7c6b,#12b88e);color:#fff;border-radius:24px;
  padding:48px;display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;
}
.promo-band h2{font-size:28px}
.promo-band p{opacity:.9;margin-top:8px;max-width:520px}

/* ===== 课程详情 ===== */
.detail-head{display:flex;gap:14px;align-items:center;padding:26px 0 8px}
.back-btn{background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:8px 16px;cursor:pointer;font-size:14px}
.back-btn:hover{background:var(--surface-2)}
.detail-hero{display:grid;grid-template-columns:1.6fr 1fr;gap:30px;align-items:stretch}
.detail-cover{border-radius:var(--radius);min-height:300px;position:relative;overflow:hidden}
.detail-cover .cover-inner{position:absolute;inset:0;display:flex;align-items:flex-end;padding:24px;color:#fff}
.detail-cover .cover-inner h1{font-size:28px;text-shadow:0 2px 10px rgba(0,0,0,.25)}
.detail-info{display:flex;flex-direction:column}
.detail-info .price{font-size:30px;margin:6px 0 4px}
.detail-info .meta{display:flex;gap:14px;color:var(--muted);font-size:14px;margin-bottom:14px;flex-wrap:wrap}
.detail-info .desc{color:var(--ink-2);margin-bottom:18px}
.buy-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;margin-top:auto}
.buy-card .row-price{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:14px}
.owned-tag{color:var(--wechat);font-weight:700;font-size:15px}

/* tabs */
.tabs{display:flex;gap:8px;border-bottom:1px solid var(--line);margin:30px 0 22px;flex-wrap:wrap}
.tab{padding:12px 18px;cursor:pointer;font-weight:600;color:var(--muted);border-bottom:2px solid transparent;margin-bottom:-1px}
.tab.active{color:var(--accent);border-bottom-color:var(--accent)}
.panel{display:none;animation:fade .25s}
.panel.active{display:block}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

/* 视频 */
.video-main{background:#0e1118;border-radius:var(--radius);overflow:hidden;aspect-ratio:16/9}
.video-main video{width:100%;height:100%;object-fit:cover;background:#000}
.lesson-list{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.lesson{display:flex;align-items:center;gap:14px;padding:14px 16px;border:1px solid var(--line);border-radius:var(--radius-sm);cursor:pointer;transition:.15s}
.lesson:hover{border-color:var(--accent);background:var(--accent-soft)}
.lesson .idx{width:30px;height:30px;border-radius:50%;background:var(--surface-2);display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--accent);font-weight:700}
.lesson .lt{font-weight:600}
.lesson .ld{font-size:13px;color:var(--muted)}
.lesson .dur{margin-left:auto;font-size:13px;color:var(--muted)}
.lesson.done .lt{color:var(--muted);text-decoration:line-through}
.lesson.done .idx{background:var(--accent-soft);color:var(--accent)}
.lesson .idx .ok{font-size:13px;font-weight:800}

/* 学习进度条 */
.learn-progress{margin:10px 14px 4px;position:relative;padding-right:86px}
.learn-progress-bar{height:8px;background:var(--surface-2);border-radius:999px;overflow:hidden}
.learn-progress-bar-inner{display:block;height:100%;background:linear-gradient(90deg,var(--accent),#12b88e);border-radius:999px}
.learn-progress-txt{position:absolute;right:0;top:-3px;font-size:12px;color:var(--muted);font-weight:600}

/* 音频 */
.audio-list{display:flex;flex-direction:column;gap:12px}
.audio-item{display:flex;align-items:center;gap:14px;padding:14px 16px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface)}
.audio-item .play{width:42px;height:42px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;flex:none}
.audio-item .at{font-weight:600}
.audio-item .ad{font-size:13px;color:var(--muted)}

/* 文档 */
.doc-list{display:flex;flex-direction:column;gap:12px}
.doc-item{display:flex;align-items:center;gap:14px;padding:14px 16px;border:1px solid var(--line);border-radius:var(--radius-sm)}
.doc-item .fico{width:40px;height:40px;border-radius:8px;background:var(--accent-soft);color:var(--accent);display:flex;align-items:center;justify-content:center;font-weight:700;flex:none}
.doc-item .dt{font-weight:600}
.doc-item .ds{font-size:13px;color:var(--muted)}
.doc-item .dl{margin-left:auto;color:var(--accent);font-weight:600;font-size:14px;cursor:pointer}

/* 介绍 */
.intro p{color:var(--ink-2);margin-bottom:14px}
.intro ul{margin:0 0 14px 20px;color:var(--ink-2)}
.intro li{margin-bottom:6px}

/* ===== 推广中心 ===== */
.promo-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:30px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.stat .v{font-size:26px;font-weight:800;color:var(--accent)}
.stat .k{font-size:13px;color:var(--muted);margin-top:4px}
.promo-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:22px}
.panel-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.panel-box h3{font-size:18px;margin-bottom:16px}
.link-box{display:flex;gap:10px;margin-bottom:8px}
.link-box input{flex:1;padding:11px 14px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface);font-size:14px;color:var(--ink-2)}
.copy-btn{background:var(--accent-soft);color:var(--accent-ink);border:1px solid var(--accent);border-radius:var(--radius-sm);padding:0 18px;cursor:pointer;font-weight:600}
.rate-row{display:flex;gap:12px;margin-top:10px}
.rate{flex:1;background:var(--surface);border-radius:var(--radius-sm);padding:14px;text-align:center}
.rate .r{font-size:20px;font-weight:800;color:var(--accent)}
.rate .rl{font-size:12px;color:var(--muted)}
.poster{margin-top:16px;border:2px dashed var(--line);border-radius:var(--radius);padding:26px;text-align:center;color:var(--muted);background:var(--surface)}
.team{display:flex;flex-direction:column;gap:10px}
.team-item{display:flex;align-items:center;gap:12px;padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius-sm)}
.team-item .avatar{width:38px;height:38px;border-radius:50%;background:var(--accent-soft);color:var(--accent);display:flex;align-items:center;justify-content:center;font-weight:700}
.team-item .lv{margin-left:auto;font-size:12px;color:var(--muted)}
.note{font-size:13px;color:var(--muted);text-align:center;margin-top:14px}

/* ===== 我的课程 ===== */
.mycourse{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}

/* ===== 弹窗 ===== */
.modal{position:fixed;inset:0;background:rgba(16,18,32,.45);display:none;align-items:center;justify-content:center;padding:20px;z-index:60}
.modal.open{display:flex}
.modal-box{background:#fff;border-radius:20px;width:100%;max-width:420px;padding:28px;position:relative;animation:pop .2s}
@keyframes pop{from{transform:scale(.96);opacity:0}to{transform:none;opacity:1}}
.modal-close{position:absolute;top:14px;right:16px;font-size:24px;color:var(--muted);background:none;border:none;cursor:pointer;line-height:1}
.modal-title{font-size:20px;font-weight:700;margin-bottom:18px}
.modal-tabs{display:flex;gap:8px;margin-bottom:20px}
.modal-tab{flex:1;padding:10px;border:1px solid var(--line);background:#fff;border-radius:10px;cursor:pointer;font-weight:600;color:var(--muted)}
.modal-tab.active{background:var(--accent);color:#fff;border-color:var(--accent)}
.ltab-panel{display:none}
.ltab-panel.active{display:block}
.wx-qr{text-align:center;padding:14px 0 20px}
.wx-qr-img{width:188px;height:188px;margin:0 auto 14px;padding:6px;box-sizing:border-box;border-radius:14px;background:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;color:var(--muted);border:1px solid var(--line);overflow:hidden}
.wx-qr-img img,.wx-qr-img canvas{display:block;width:176px!important;height:176px!important;max-width:176px;max-height:176px;object-fit:contain;border-radius:6px}
.field{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font-size:15px;margin-bottom:12px;background:#fff}
.field:focus{outline:none;border-color:var(--accent)}
.row{display:flex;gap:10px}
.row .field{flex:1}
.code-btn{white-space:nowrap;background:var(--accent-soft);color:var(--accent-ink);border:1px solid var(--accent);border-radius:10px;padding:0 16px;cursor:pointer;font-weight:600;font-size:14px}
.code-btn:disabled{opacity:.6;cursor:not-allowed}
.order-line{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;background:var(--surface);border-radius:10px;margin-bottom:16px}
.order-line b{color:var(--accent);font-size:18px}
.pay-methods{display:flex;flex-direction:column;gap:10px;margin-bottom:18px}
.pay-method{display:flex;align-items:center;gap:12px;padding:14px 16px;border:1px solid var(--line);border-radius:10px;cursor:pointer;font-weight:600}
.pay-method[hidden]{display:none!important}
.pay-method.active{border-color:var(--accent);background:var(--accent-soft)}
.pay-method input{accent-color:var(--accent)}
.pay-ico--balance{display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;border-radius:50%;background:var(--accent);color:#fff;font-size:14px;font-weight:800}
.pay-ico{width:34px;height:34px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:16px;color:#fff;flex:none}
.pay-ico--wx{background:#07C160}
.pay-ico--ali{background:#1677FF}

/* 支付成功弹窗 */
.pay-success{text-align:center}
.pay-success-ico{
  width:72px;height:72px;border-radius:50%;margin:0 auto 16px;color:#0e7c6b;
  background:linear-gradient(135deg,#e1f5ee,#c8eee1);
  display:flex;align-items:center;justify-content:center;
}
.pay-success-actions{display:flex;flex-direction:column;gap:10px;margin-top:18px}

/* ===== Toast ===== */
.toast{position:fixed;left:50%;bottom:40px;transform:translateX(-50%) translateY(20px);
  background:var(--ink);color:#fff;padding:12px 22px;border-radius:999px;font-size:14px;
  opacity:0;pointer-events:none;transition:.25s;z-index:80}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ===== 页脚（与 CTA 同宽：container 内居中卡片，圆角四周对齐） ===== */
.site-footer{margin:0;background:var(--bg);padding:8px 0 24px;position:relative;overflow:hidden;border-top:1px solid var(--line)}
.site-footer::before{
  content:none;
}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:30px;padding:22px 32px 0}
.footer-grid h4{font-size:15px;margin-bottom:12px;color:var(--ink)}
.footer-grid a{display:block;color:var(--muted);font-size:14px;padding:5px 0;transition:color .15s,transform .15s}
.footer-grid a:hover{color:var(--accent);transform:translateX(2px)}
.footer-bottom{margin-top:18px;padding:14px 32px 0;border-top:1px solid var(--line);font-size:13px;text-align:center;color:var(--muted)}

/* ===== 主体容器（flex 让 footer 自然贴底） ===== */
#app{flex:1 0 auto;min-height:0}
.back-top{
  position:fixed;right:22px;bottom:84px;z-index:60;width:42px;height:42px;border-radius:50%;
  background:#fff;border:1px solid var(--line);color:var(--accent);font-size:18px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-sm);
  opacity:0;pointer-events:none;transition:.25s;
}
.back-top.show{opacity:1;pointer-events:auto}
.back-top:hover{background:var(--accent);color:#fff;border-color:var(--accent)}
@media(max-width:760px){.back-top{bottom:76px;right:16px;width:38px;height:38px}}

/* ===== 响应式 ===== */
@media(max-width:980px){
  .course-grid{grid-template-columns:repeat(2,1fr)}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .promo-stats{grid-template-columns:repeat(2,1fr)}
  .detail-hero{grid-template-columns:1fr}
  .promo-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-grid > div:first-child{grid-column:1 / -1}
  .mycourse{grid-template-columns:repeat(2,1fr)}
  .about-grid{grid-template-columns:repeat(2,1fr)}
  .contact-row{grid-template-columns:1fr 1fr}
  .testi-grid{grid-template-columns:repeat(2,1fr)}
  .pc-layout{grid-template-columns:200px 1fr}
  .nav-links{gap:22px}
}
@media(max-width:760px){
  .nav-links,.nav-actions{display:none}
  .nav-toggle{display:block}
  .hero{padding:40px 0 32px}
  .hero h1{font-size:28px;line-height:1.25}
  .hero h1 .small{font-size:13px;margin-bottom:4px}
  .hero p.lead{font-size:14px;margin:10px 0 18px}
  .hero-stats{gap:18px;margin-top:20px;padding-top:18px}
  .hero-stats .num{font-size:18px}
  .hero-stats .lbl{font-size:11px}
  .badges{margin-top:14px}
  /* H5 通用紧凑 */
  body{font-size:14px}
  .section{padding:48px 0}
  .sec-head h2{font-size:22px}
  .sec-head{margin-bottom:28px}
  .btn{padding:11px 20px;font-size:14px}
  .btn-block{padding:13px 20px;font-size:15px}
  /* 详情页 H5 */
  .detail-head{padding-top:6px}
  .detail-hero{grid-template-columns:1fr;gap:0;border:none;padding-bottom:16px;margin-bottom:6px}
  .detail-cover{min-height:170px;border-radius:14px;overflow:hidden}
  .detail-cover .cover-inner{padding:24px 20px}
  .detail-cover .cover-inner h1{font-size:24px;line-height:1.3}
  .detail-info{padding-top:14px}
  .detail-info .tags{justify-content:flex-start}
  .detail-info .desc{font-size:14px;margin-top:8px}
  .buy-card{padding:14px;border-radius:12px;margin-top:12px}
  .fav-row{margin-top:10px}
  .tabs{position:sticky;top:60px;z-index:5;background:#fff;border-radius:10px;padding:4px;gap:2px;border:1px solid var(--line);box-shadow:0 2px 8px rgba(15,23,42,.04)}
  .tab{padding:9px 10px;font-size:13px}
  .panel{padding-top:16px}
  /* 个人中心 H5 */
  .pc-user{flex-direction:row;text-align:left;padding:14px}
  .pc-avatar{width:46px;height:46px;font-size:18px}
  .pc-nav{flex-direction:row;overflow-x:auto;flex-wrap:nowrap;gap:6px;padding-bottom:4px;-webkit-overflow-scrolling:touch}
  .pc-nav-item{white-space:nowrap;padding:8px 12px;font-size:13px;background:var(--surface);border-radius:10px;flex:none}
  .pc-nav-item.active{background:var(--accent-soft)}
  .pc-cards{gap:10px}
  .pc-stat{padding:14px 12px}
  .pc-stat b{font-size:24px}
  .pc-setting-row{flex-direction:column;align-items:flex-start;gap:10px}
  .pc-setting-row .btn{width:100%}
  .pc-logout{width:100%}
  .section{padding:52px 0}
  .sec-head h2{font-size:24px}
  .promo-band{padding:32px 26px;border-radius:18px}
  .about-hero{padding:56px 0 44px}
  .about-hero-inner{gap:24px;flex-direction:column;align-items:flex-start}
  .about-avatar{width:104px;height:104px;font-size:48px;border-radius:24px}
  .about-id h1{font-size:30px}
  .pc-layout{grid-template-columns:1fr}
  .pc-sidebar{position:static;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
  .pc-user{border-bottom:none;margin-bottom:0;padding-bottom:0;flex:1;text-align:left}
  .pc-nav{flex-direction:row;flex-wrap:wrap;flex:1 1 100%}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .instructor-card{flex-direction:column;align-items:flex-start}
  .inst-stats{width:100%;justify-content:space-between}
  .bottom-tab{display:flex}
  .site-footer{padding-bottom:76px}
  #app{padding-bottom:60px}
}
@media(max-width:760px){
  /* H5 顶部导航：紧凑 - VIP 改图标，搜索进菜单 */
  .nav-actions{gap:8px}
  .nav-actions #authBtn,.nav-actions #myCoursesBtn{display:none}
  .btn-vip{padding:7px 9px;font-size:13px;box-shadow:none}
  .nav-toggle{display:flex}
  /* 训练营 H5 单列 */
  .train-grid{grid-template-columns:1fr}
  /* 详情页 H5 紧凑补充 */
  .detail-info .meta{font-size:13px;flex-wrap:wrap;gap:6px 14px}
  .speed-bar{overflow-x:auto;flex-wrap:nowrap;-webkit-overflow-scrolling:touch;padding-bottom:2px}
  .speed-btn{flex:none}
  .review-item{padding:14px 0;gap:12px}
  .review-avatar{width:36px;height:36px;font-size:15px}
  .review-summary{padding:14px 16px;gap:14px}
  .review-score b{font-size:32px}
  .review-form{padding:14px 16px}
  .star-pick{font-size:22px}
  /* 顶部导航高度 H5 收紧 */
  .nav{height:56px}
  .site-header{padding-top:0;padding-bottom:0}
}
@media(min-width:761px){
  .bottom-tab{display:none}
}
@media(max-width:520px){
  .course-grid{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:1fr}
  .promo-stats{grid-template-columns:1fr 1fr}
  .mycourse{grid-template-columns:1fr}
  .container{padding:0 18px}
  .about-grid{grid-template-columns:1fr}
  .contact-row{grid-template-columns:1fr}
  .timeline{padding-left:18px}
  .testi-grid{grid-template-columns:1fr}
  .course-toolbar{flex-direction:column;align-items:stretch}
}

/* 首页 V2 响应式 */
@media(max-width:980px){
  .home-hero-grid{grid-template-columns:1fr .72fr;gap:36px}
  .home-hero h1{font-size:43px}
  .home-hero-visual{min-height:390px}
  .visual-title{font-size:36px}
  .founder-grid{grid-template-columns:150px 1fr}.founder-mark{width:145px;height:175px}.founder-quote{grid-column:2}
  .home-founder-card{padding:48px 44px}
}
@media(max-width:760px){
  .home-hero{padding:42px 0 30px}
  .home-hero-grid{grid-template-columns:1fr;gap:30px}
  .home-hero-copy{padding:0}
  .home-hero h1{font-size:36px;letter-spacing:-1px;margin:17px 0 15px}
  .home-hero-copy>p{font-size:15px;line-height:1.75}
  .home-hero-actions{margin-top:24px;gap:20px}
  .home-proof{gap:10px;justify-content:space-between;margin-top:28px}.home-proof span{display:block}.home-proof b{display:block}
  .home-hero-visual{min-height:320px;border-radius:24px;padding:26px}
  .visual-title{left:26px;bottom:58px;font-size:35px}.visual-note{left:27px;bottom:25px}.visual-monogram{right:22px;top:22px}
  .path-section{padding:32px 0 52px}
  .path-grid{grid-template-columns:1fr}
  .path-card{border-right:0;border-bottom:1px solid var(--line);padding:26px 10px;min-height:0}.path-card:last-child{border-bottom:0}.path-card:hover{transform:none;box-shadow:none}
  .path-icon{margin-bottom:17px}.path-go{margin-top:14px}
  .editorial-head{align-items:flex-start;flex-direction:column;margin-bottom:26px}.editorial-head h2{font-size:27px}.editorial-head.compact h2{font-size:25px}
  .home-course-grid{grid-template-columns:1fr;gap:18px}.home-course-grid .course-cover{height:190px}
  .founder-section{padding:56px 0}
  .home-founder-section{padding:48px 0 26px}
  .home-founder-card{padding:34px 28px;border-radius:24px}
  .founder-grid{grid-template-columns:1fr;gap:28px}.founder-mark{width:112px;height:136px}.founder-mark span{font-size:48px}.founder-copy h2{font-size:27px}.founder-quote{grid-column:auto;border-left:0;border-top:1px solid rgba(255,255,255,.2);padding:24px 0 0;font-size:20px}
  .home-testimonials .testi-grid{grid-template-columns:1fr}.home-testimonials .testi-card{margin-right:0}
}

/* ===== 文章专栏 ===== */
.article-top{margin-bottom:22px}
.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.article-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform .25s,box-shadow .25s;cursor:pointer;display:flex;flex-direction:column;will-change:transform}
.article-card:hover{box-shadow:0 14px 32px rgba(14,80,63,.1);transform:translateY(-5px);border-color:transparent}
.article-cover{height:130px;position:relative;transition:.25s;background-color:#173b34}
.article-card:hover .article-cover{filter:saturate(1.06)}
.article-tag{position:absolute;left:12px;top:12px;font-size:12px;font-weight:600;color:#fff;background:rgba(0,0,0,.28);padding:4px 12px;border-radius:999px;backdrop-filter:blur(4px)}
.article-body{padding:16px 16px 18px;display:flex;flex-direction:column;gap:8px;flex:1}
.article-body h3{font-size:17px;font-weight:700;line-height:1.4}
.article-body .desc{font-size:13px;color:var(--muted);flex:1}
.article-meta{display:flex;gap:12px;font-size:12px;color:var(--muted)}

/* 文章详情 */
.article-detail{max-width:1000px;padding-top:10px}
.article-hero{border-radius:var(--radius);overflow:hidden;min-height:220px;position:relative;margin:14px 0 30px;background-color:#173b34}
.article-hero .cover-inner{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:flex-end;padding:28px;color:#fff;z-index:2}
.article-hero .cover-inner h1{font-size:30px;line-height:1.3;text-shadow:0 2px 12px rgba(0,0,0,.3);margin:10px 0 8px}
.article-hero .article-meta{color:rgba(255,255,255,.92)}

/* 文章详情：正文 + sticky 目录（PC 两栏） */
.article-layout{display:grid;grid-template-columns:220px 1fr;gap:40px;align-items:start}
.toc{position:sticky;top:84px;max-height:calc(100vh - 110px);overflow:auto;padding:18px 16px;background:var(--surface);border:1px solid var(--line);border-radius:14px;font-size:13px}
.toc-title{font-weight:700;color:var(--ink);margin-bottom:12px;display:flex;align-items:center;gap:6px}
.toc-item{display:block;color:var(--muted);padding:5px 8px;border-radius:7px;line-height:1.5;transition:.15s}
.toc-item:hover{color:var(--accent);background:#fff}
.toc-item.active{color:var(--accent);background:#fff;font-weight:600}
.toc-l3{padding-left:20px;font-size:12px}
.toc-l4{padding-left:32px;font-size:12px}

/* Markdown 自动排版 */
.md-content{font-size:16px;color:var(--ink-2);line-height:1.85}
.md-content h1,.md-content h2,.md-content h3,.md-content h4,.md-content h5,.md-content h6{color:var(--ink);line-height:1.35;margin:1.6em 0 .7em;font-weight:700}
.md-content h1{font-size:28px;padding-bottom:.3em;border-bottom:2px solid var(--line)}
.md-content h2{font-size:23px}
.md-content h3{font-size:19px}
.md-content h4{font-size:17px}
.md-content p{margin:.9em 0}
.md-content ul,.md-content ol{margin:.8em 0;padding-left:1.6em}
.md-content li{margin:.4em 0}
.md-content ul li::marker{color:var(--accent)}
.md-content a{color:var(--accent);text-decoration:underline;text-underline-offset:2px}
.md-content img{max-width:100%;border-radius:var(--radius-sm);margin:.8em 0}
.md-content blockquote{margin:1.1em 0;padding:12px 18px;background:var(--surface);border-left:4px solid var(--accent);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--ink-2)}
.md-content blockquote p{margin:.2em 0}
.md-content hr{border:none;border-top:1px solid var(--line);margin:2em 0}
.md-content code{background:var(--surface-2);color:#c0392b;padding:2px 6px;border-radius:6px;font-size:.9em;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.md-content pre.md-pre{background:#0e1118;color:#e6e6e6;padding:18px 20px;border-radius:var(--radius-sm);overflow:auto;margin:1.2em 0;font-size:14px;line-height:1.6}
.md-content pre.md-pre code{background:none;color:inherit;padding:0;font-size:inherit}

/* 编辑器（Markdown 发布） */
.editor{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.editor-bar{display:flex;gap:12px;margin-bottom:16px;flex-wrap:wrap;align-items:center}
.editor-bar .field{flex:1;min-width:160px;margin-bottom:0}
.editor-tabs{display:inline-flex;background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:3px;gap:2px}
.editor-tab{border:none;background:transparent;padding:6px 14px;border-radius:999px;font-size:13px;font-weight:600;color:var(--muted);cursor:pointer;transition:.15s;white-space:nowrap}
.editor-tab.active{background:#fff;color:var(--accent);box-shadow:0 1px 4px rgba(0,0,0,.08)}
.editor-tab:hover:not(.active){color:var(--ink)}
.editor-split{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.editor-pane{display:flex;flex-direction:column}
.editor-pane.single{width:100%}
.pane-label{font-size:13px;font-weight:600;color:var(--muted);margin-bottom:8px;display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap}
#artBody{width:100%;min-height:420px;resize:vertical;padding:16px;border:1px solid var(--line);border-radius:var(--radius-sm);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:14px;line-height:1.7;background:var(--surface);color:var(--ink-2)}
#artBody:focus{outline:none;border-color:var(--accent)}
#artPreview{min-height:420px;padding:16px;border:1px solid var(--line);border-radius:var(--radius-sm);background:#fff;overflow:auto}
.rt-toolbar{display:inline-flex;gap:2px;background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:3px;flex-wrap:wrap}
.rt-toolbar button{border:none;background:transparent;padding:4px 10px;border-radius:5px;font-size:12px;color:var(--ink-2);cursor:pointer;transition:.12s;min-width:30px}
.rt-toolbar button:hover{background:#fff;color:var(--accent);box-shadow:0 1px 3px rgba(0,0,0,.08)}
.rt-toolbar button b,.rt-toolbar button i{font-style:normal;font-weight:700}
.rt-toolbar button i{font-style:italic;font-weight:400}
.rt-editor{min-height:420px;padding:18px 22px;border:1px solid var(--line);border-radius:var(--radius-sm);background:#fff;line-height:1.75;font-size:15px;color:var(--ink-2);outline:none}
.rt-editor:focus{border-color:var(--accent)}
.rt-editor:empty::before{content:attr(data-placeholder);color:var(--muted);pointer-events:none}
.rt-editor h2{margin:1em 0 .5em;font-size:22px;font-weight:700;color:var(--ink)}
.rt-editor h3{margin:1em 0 .5em;font-size:18px;font-weight:700;color:var(--ink)}
.rt-editor blockquote{margin:1em 0;padding:8px 14px;border-left:3px solid var(--accent);background:var(--accent-soft);color:var(--ink);border-radius:0 6px 6px 0}
.rt-editor code{background:var(--surface);color:var(--accent-ink);padding:2px 6px;border-radius:4px;font-size:.92em;font-family:ui-monospace,monospace}
.rt-editor ul,.rt-editor ol{margin:.6em 0;padding-left:1.6em}
.rt-editor hr{border:none;border-top:1px solid var(--line);margin:1.5em 0}
.rt-editor a{color:var(--accent);text-decoration:underline}

@media(max-width:980px){
  .article-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:760px){
  .banner{height:180px;padding:0}
  .banner-slide{padding:0 36px}
  .banner-title{font-size:22px;line-height:1.25}
  .banner-sub{font-size:12px;margin-bottom:10px}
  .banner-price b{font-size:20px}
  .banner-deco{width:140px;height:140px;right:-40px;top:-40px}
  .banner-arrow{display:none}
  /* 节奏紧凑 */
  .section{padding:32px 0}
  .sec-head{margin-bottom:20px}
  .sec-head h2{font-size:20px;letter-spacing:0}
  .sec-head h2::after{width:32px;height:3px;margin-top:8px}
  .sec-head p{font-size:13px;margin-top:6px}
  /* 分类入口紧凑 */
  .cat-sec{padding:14px 0 6px}
  .cat-grid{grid-template-columns:repeat(4,1fr);gap:8px;padding:14px 10px;border-radius:12px}
  .cat-ico{width:42px;height:42px;font-size:20px;border-radius:11px}
  .cat-name{font-size:11px}
  /* 课程网格紧 */
  .course-grid{gap:12px}
  .course-cover{height:140px}
  .course-body{padding:12px;gap:8px}
  .course-body h3{font-size:15px}
  .course-body .desc{font-size:12px;line-height:1.45;-webkit-line-clamp:2}
  .course-meta{font-size:11px}
  .price{font-size:18px}
  /* 文章卡紧凑 */
  .article-cover{height:110px}
  .article-body{padding:12px 12px 14px;gap:6px}
  .article-body h3{font-size:15px}
  .article-body .desc{font-size:12px;-webkit-line-clamp:2}
  /* feature 紧凑 */
  .feature{padding:18px 16px}
  .feature .ico{width:38px;height:38px;font-size:18px;border-radius:10px}
  .feature h4{font-size:14px}
  .feature p{font-size:12px}
  /* banner section 紧 */
  .banner-sec{padding:14px 0 4px}
  /* 学员/FAQ 紧凑 */
  .testi-card{padding:16px 14px;gap:10px}
  .testi-text{font-size:13px}
  /* 返回顶部避让 */
  /* H5：CTA 卡片节奏与上方内容统一，footer 卡片化 */
  .cta-band{padding:10px 0 28px}
  .cta-inner{padding:32px 28px;border-radius:22px}
  .cta-inner h2{font-size:22px}
  .cta-inner p{font-size:14px}
  /* H5：footer 品牌整行 + 三个栏目并排一行（课程/支持/支付与登录） */
  .footer-grid{grid-template-columns:1fr 1fr 1fr;gap:18px 14px;padding:20px 22px 0}
  .footer-grid > div:first-child{grid-column:1 / -1;padding-bottom:6px}
  .footer-grid > div{padding:0;border-top:none}
  .footer-grid h4{font-size:14px;margin-bottom:10px}
  .footer-grid a{font-size:13px;padding:4px 0}
  .footer-grid .muted{font-size:12px}
  .footer-bottom{padding:14px 22px 0;margin-top:18px;font-size:12px}
  .site-footer{margin:0;border-radius:0}
  .back-top{bottom:70px;right:14px;width:36px;height:36px}
  /* 5 Tab 紧凑（避免拥挤） */
  .bottom-tab a span{font-size:10px}
  .bottom-tab a svg{width:19px;height:19px}
  .bottom-tab{height:54px}
}
@media(max-width:420px){
  .bottom-tab a span{font-size:9px}
  .bottom-tab a svg{width:18px;height:18px}
}

/* 推广中心 */
.distribution-center{display:grid;gap:18px}.distribution-hero{display:flex;justify-content:space-between;gap:24px;align-items:flex-start;background:#173b34;color:#fff;border-radius:20px;padding:28px}.distribution-hero h2{font-size:25px;line-height:1.35;margin:8px 0}.distribution-hero p{color:rgba(255,255,255,.7);font-size:13px;max-width:620px}.distribution-hero .status-pill{flex:0 0 auto}.distribution-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.distribution-stat{background:#fff;border:1px solid var(--line);border-radius:15px;padding:19px}.distribution-stat span{display:block;color:var(--muted);font-size:12px}.distribution-stat b{display:block;color:var(--accent);font-size:23px;margin-top:8px}.distribution-share,.distribution-records{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px}.distribution-share{display:grid;gap:16px}.distribution-share h3,.distribution-section-head h3{font-size:18px}.distribution-share p,.distribution-section-head span{color:var(--muted);font-size:12px;margin-top:5px}.distribution-share-row{display:flex;gap:10px}.distribution-share-row input{min-width:0;flex:1;border:1px solid var(--line);border-radius:10px;padding:0 14px;background:var(--surface);color:#52615d}.distribution-section-head{display:flex;justify-content:space-between;gap:16px;align-items:end;padding-bottom:14px;border-bottom:1px solid var(--line)}.distribution-record{display:flex;justify-content:space-between;gap:20px;align-items:center;padding:15px 0;border-bottom:1px solid var(--line)}.distribution-record:last-child{border-bottom:0}.distribution-record b,.distribution-record span{display:block}.distribution-record span{color:var(--muted);font-size:11px;margin-top:4px}.distribution-record strong{font-size:16px}.distribution-record strong.income{color:var(--accent)}.distribution-empty{color:var(--muted);font-size:13px;padding:24px 0 4px}.distribution-note{color:var(--muted);font-size:11px;line-height:1.7;padding:0 4px}
/* 推广中心 · 受邀好友列表 */
.distribution-members{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px}
.distribution-member{display:flex;align-items:center;gap:14px;padding:14px 0;border-bottom:1px solid var(--line)}
.distribution-member:last-child{border-bottom:0}
.dm-avatar{width:44px;height:44px;border-radius:50%;overflow:hidden;flex:0 0 auto;display:flex;align-items:center;justify-content:center;background:#eef1ef;color:#52615d;font-weight:700;font-size:17px}
.dm-avatar img{width:100%;height:100%;object-fit:cover;display:block}
.dm-info{flex:1;min-width:0}
.dm-info b{display:block;font-size:15px;color:#173b34;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.dm-info span{display:block;color:var(--muted);font-size:12px;margin-top:4px}
.dm-tag{flex:0 0 auto;font-size:12px;font-weight:600;color:var(--muted);background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:5px 12px}
.dm-tag.member{color:var(--accent);border-color:var(--accent);background:rgba(22,206,176,.1)}
@media(max-width:760px){.distribution-hero{padding:22px;display:block}.distribution-hero .status-pill{display:inline-block;margin-top:15px}.distribution-grid{grid-template-columns:1fr 1fr}.distribution-share,.distribution-records{padding:19px}.distribution-share-row{display:grid}.distribution-share-row input{min-height:44px}.distribution-section-head{display:block}.distribution-section-head span{display:block;margin-top:6px}}
@media(max-width:760px){
  .article-layout{grid-template-columns:1fr;gap:20px}
  .toc{display:none}
  .editor-split{grid-template-columns:1fr}
  .article-hero .cover-inner h1{font-size:24px}
  .article-hero{min-height:170px}
  .rt-toolbar button{padding:4px 8px;font-size:11px}
  .rt-editor{min-height:300px;padding:14px 16px;font-size:14px}
}

/* ===== 移动端兜底（body.mobile-mode 由 JS 设置，不依赖 viewport meta） ===== */
body.mobile-mode .banner-arrow{display:none !important}
body.mobile-mode .back-top{bottom:70px;right:14px;width:36px;height:36px}
@media(max-width:520px){
  .article-grid{grid-template-columns:1fr}
}

/* ===== 404 页 ===== */
.nf{min-height:56vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:80px 24px;gap:6px}
.nf-code{font-size:92px;font-weight:800;line-height:1;background:linear-gradient(135deg,var(--accent),#1fc9a0);-webkit-background-clip:text;background-clip:text;color:transparent}
.nf h2{font-size:26px;margin-top:8px}
.nf p{color:var(--muted);margin-bottom:22px}

/* ===== 空状态 ===== */
.empty{text-align:center;padding:60px 20px;color:var(--muted)}
.empty .empty-ico{font-size:44px;margin-bottom:12px;opacity:.7}

/* ===== 移动端底部 Tab ===== */
.bottom-tab{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:28;
  background:rgba(255,255,255,.96);backdrop-filter:saturate(160%) blur(14px);
  border-top:1px solid var(--line);height:58px;
  padding-bottom:env(safe-area-inset-bottom);
}
.bottom-tab a{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--muted);transition:.15s;
}
.bottom-tab a svg{width:22px;height:22px}
.bottom-tab a.active{color:var(--accent);font-weight:600}
.bottom-tab a.active svg{stroke-width:2.2}
/* 5 个 Tab 时更紧凑 */
@media(max-width:420px){
  .bottom-tab a span{font-size:10px}
  .bottom-tab a svg{width:20px;height:20px}
  .bottom-tab{height:54px}
}

/* ===== 限时折扣 ===== */
.sale-flag{
  position:absolute;top:12px;left:12px;z-index:2;font-size:12px;font-weight:600;
  color:#fff;background:linear-gradient(135deg,#f43f5e,#f97316);padding:4px 10px;border-radius:999px;
  box-shadow:0 4px 10px rgba(244,63,94,.35);
}
.sale-tag{background:linear-gradient(135deg,#f43f5e,#f97316);color:#fff}
.member-flag{
  position:absolute;top:12px;left:12px;z-index:2;font-size:12px;font-weight:600;
  color:#fff;background:linear-gradient(135deg,#b9831f,#d99a2b);padding:4px 10px;border-radius:999px;
  box-shadow:0 4px 10px rgba(185,131,31,.35);
}
.member-free{color:var(--amber);font-weight:800;font-size:16px}
.member-tag{display:inline-block;margin-left:4px;font-size:11px;color:var(--amber);background:#fbf3e2;padding:1px 8px;border-radius:999px;font-weight:600;vertical-align:middle}
.countdown{
  display:inline-block;margin-left:8px;font-size:12px;font-weight:600;color:var(--amber);
  background:var(--surface);border:1px dashed var(--amber);border-radius:8px;padding:2px 8px;vertical-align:middle;
}

/* ===== 课程详情：目录侧边栏 + 主区两栏 ===== */
.course-layout{display:grid;grid-template-columns:260px 1fr;gap:24px;margin:26px 0 8px;align-items:start}
.course-sidebar{
  position:sticky;top:80px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:18px 14px;max-height:calc(100vh - 110px);overflow-y:auto;
}
.sidebar-title{
  font-size:16px;font-weight:700;margin-bottom:12px;display:flex;align-items:center;justify-content:space-between;
}
.sidebar-group{margin-bottom:14px}
.sidebar-label{
  font-size:12px;color:var(--muted);font-weight:600;display:flex;justify-content:space-between;
  padding:6px 8px;background:var(--surface-2);border-radius:8px;margin-bottom:4px;
}
.sidebar-label span{color:var(--accent);font-weight:700}
.sidebar-list{display:flex;flex-direction:column;gap:2px}
.sidebar-list .lesson{
  display:flex;align-items:center;gap:8px;padding:7px 8px;border-radius:8px;cursor:pointer;
  font-size:13px;transition:.15s;
}
.sidebar-list .lesson:hover{background:#fff}
.sidebar-list .lesson.active{background:var(--accent-soft)}
.sidebar-list .lesson.active .lt{color:var(--accent);font-weight:600}
.sidebar-list .lesson .dur{display:none}
.sidebar-list .lesson .idx{width:22px;height:22px;flex:none;border-radius:50%;background:var(--surface-2);display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:600;color:var(--muted)}
.sidebar-list .lesson.active .idx{background:var(--accent);color:#fff}
.sidebar-list .lesson .lt{flex:1;font-size:13px;line-height:1.35}
.sidebar-list .lesson .preview-tag{display:none}
.sitem{
  display:flex;align-items:center;gap:8px;padding:7px 8px;border-radius:8px;cursor:pointer;
  font-size:13px;transition:.15s;
}
.sitem:hover{background:#fff}
.sitem .sitem-ico{flex:none}
.sitem .sitem-title{flex:1;line-height:1.35;color:var(--ink-2)}
.course-main{min-width:0}
.course-main .tabs{margin-top:0}
.course-main .video-main{margin-top:0}

/* ===== 倍速播放 ===== */
.speed-bar{display:flex;align-items:center;gap:8px;margin-top:10px;flex-wrap:wrap}
.speed-bar span{font-size:13px;color:var(--muted);margin-right:2px}
.speed-btn{
  border:1px solid var(--line);background:#fff;color:var(--ink-2);font-size:13px;font-weight:600;
  padding:4px 12px;border-radius:999px;cursor:pointer;transition:.15s;
}
.speed-btn:hover{border-color:var(--accent);color:var(--accent)}
.speed-btn.active{background:var(--accent);border-color:var(--accent);color:#fff}

/* ===== 收藏按钮 ===== */
.fav-row{margin-top:14px}
.fav-btn{
  border:1px solid var(--line);background:#fff;color:var(--ink-2);font-size:13px;font-weight:600;
  padding:8px 16px;border-radius:999px;cursor:pointer;transition:.15s;
}
.fav-btn:hover{border-color:var(--accent);color:var(--accent)}
.fav-btn.on{background:#fff1f2;border-color:#f43f5e;color:#f43f5e}

/* ===== 课程评价 ===== */
.review-wrap{}
.review-summary{
  display:flex;align-items:center;gap:20px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:18px 22px;margin-bottom:20px;flex-wrap:wrap;
}
.review-score{display:flex;align-items:baseline;gap:8px}
.review-score b{font-size:38px;font-weight:800;color:var(--accent);line-height:1}
.review-score span{font-size:13px;color:var(--muted)}
.review-count{font-size:14px;color:var(--ink-2);flex:1}
.review-form{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 20px;margin-bottom:20px;display:flex;flex-direction:column;gap:12px;
}
.star-pick{display:flex;gap:6px;font-size:26px;color:#d3d6e2;cursor:pointer;user-select:none}
.star-pick .star.active{color:var(--amber)}
.star-pick .star:hover{color:var(--amber)}
.review-form textarea{
  min-height:90px;padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius-sm);
  font-size:14px;font-family:inherit;resize:vertical;background:#fff;color:var(--ink-2);
}
.review-form textarea:focus{outline:none;border-color:var(--accent)}
.review-list{display:flex;flex-direction:column;gap:14px}
.review-item{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line)}
.review-item:last-child{border-bottom:none}
.review-avatar{
  width:40px;height:40px;flex:none;border-radius:50%;background:linear-gradient(135deg,var(--accent),#1fc9a0);
  color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;
}
.review-body{flex:1;min-width:0}
.review-top{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.review-stars{color:var(--amber);font-size:13px;letter-spacing:1px}
.review-date{font-size:12px;color:var(--muted)}
.review-body p{margin-top:6px;font-size:14px;color:var(--ink-2);line-height:1.7}

/* ===== 个人中心：收藏 ===== */
.link-btn{background:none;border:none;color:var(--accent);cursor:pointer;font-size:13px;padding:0}
.link-btn:hover{text-decoration:underline}

/* ===== 训练营 ===== */
.train-flag{
  position:absolute;top:12px;left:12px;z-index:2;font-size:12px;font-weight:600;
  color:#fff;background:linear-gradient(135deg,#0a5c50,#0e7c6b);padding:4px 10px;border-radius:999px;
  box-shadow:0 4px 10px rgba(124,58,237,.32);
}
.training-card{
  background:linear-gradient(135deg,#f5f3ff 0%,#eef2ff 100%);border:1px solid #e0d8ff;
  border-radius:var(--radius);padding:18px 20px;margin-bottom:16px;
}
.train-head{display:flex;align-items:center;gap:10px;margin-bottom:14px;flex-wrap:wrap}
.train-tag{background:linear-gradient(135deg,#0a5c50,#0e7c6b);color:#fff;font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px}
.train-title{font-size:15px;font-weight:600;color:var(--ink)}
.train-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:14px}
.train-stat{background:#fff;border-radius:10px;padding:10px;text-align:center}
.train-stat b{display:block;font-size:16px;font-weight:700;color:var(--accent)}
.train-stat span{font-size:11px;color:var(--muted)}
@media(max-width:520px){.train-grid{grid-template-columns:1fr}}

/* ===== 积分 ===== */
.points-card{
  background:linear-gradient(135deg,#fbf3e2 0%,#f7e6bd 100%);border:1px solid #ecd9a4;
  border-radius:var(--radius);padding:20px 22px;margin-bottom:18px;
}
.points-big{display:flex;align-items:baseline;gap:10px;margin-bottom:14px}
.points-big b{font-size:42px;font-weight:800;color:#8a6112;line-height:1}
.points-big span{font-size:14px;color:#8a6112;font-weight:600}
.points-rules{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.pr{background:var(--surface);border-radius:10px;padding:12px 14px;display:flex;align-items:center;gap:10px}
.pr b{color:var(--accent);font-weight:800;font-size:18px}
.pr span{font-size:13px;color:var(--ink-2)}
@media(max-width:520px){.points-rules{grid-template-columns:1fr}}
.points-log{display:flex;flex-direction:column;gap:8px}
.pl{display:flex;justify-content:space-between;padding:8px 12px;background:var(--surface);border-radius:8px;font-size:13px}
.pl b{color:var(--accent)}

/* ===== 分享海报 ===== */
.share-btn{
  display:inline-flex;align-items:center;gap:4px;border:1px solid var(--line);background:#fff;
  color:var(--ink-2);font-size:13px;font-weight:600;padding:8px 16px;border-radius:999px;
  cursor:pointer;transition:.15s;margin-left:8px;
}
.share-btn:hover{border-color:var(--accent);color:var(--accent)}
.share-box{max-width:380px;width:calc(100% - 32px)}
/* 推广中心专属推广海报（后端生成带专属二维码的海报图，弹窗中央展示） */
.promo-poster-image{width:100%;display:flex;justify-content:center;margin-top:14px}
.promo-poster-image img{
  width:min(300px,78%);max-width:300px;border-radius:10px;box-shadow:0 10px 28px rgba(15,23,42,.16);
  cursor:zoom-in;display:block;margin:0 auto;
}
.poster-actions .btn-block{width:100%}
.poster{
  position:relative;color:#fff;padding:22px 22px 16px;border-radius:14px;
  overflow:hidden;box-shadow:0 12px 30px rgba(15,23,42,.18);
}
.poster::after{
  content:"";position:absolute;right:-50px;bottom:-50px;width:160px;height:160px;border-radius:50%;
  background:rgba(255,255,255,.12);
}
.poster-tag{font-size:12px;font-weight:600;opacity:.85;margin-bottom:8px}
.poster-title{font-size:22px;font-weight:800;line-height:1.25;margin-bottom:8px}
.poster-desc{font-size:12px;opacity:.85;line-height:1.55;margin-bottom:14px;min-height:34px}
.poster-price b{font-size:32px;font-weight:800;margin:0 4px}
.poster-price s{opacity:.7;font-size:13px;margin-left:2px}
.poster-foot{display:flex;align-items:center;gap:10px;margin-top:14px;padding-top:12px;border-top:1px solid rgba(255,255,255,.18)}
.poster-avatar{
  width:34px;height:34px;border-radius:50%;background:rgba(255,255,255,.95);color:var(--ink);
  display:flex;align-items:center;justify-content:center;font-weight:700;
}
.poster-info{flex:1}
.poster-info b{display:block;font-size:13px}
.poster-info span{font-size:11px;opacity:.8}
.poster-qr{text-align:center}
.poster-qr-grid{
  width:54px;height:54px;background:#fff;color:var(--ink);font-size:9px;font-weight:700;
  display:flex;align-items:center;justify-content:center;padding:4px;line-height:1.1;border-radius:6px;
  word-break:break-all;
}
.poster-qr small{font-size:9px;opacity:.8;display:block;margin-top:2px}
.poster-actions{margin-top:14px}

/* 课程列表页头 */
.courses-hero{
  background:
    radial-gradient(700px 260px at 12% -10%, var(--accent-soft) 0%, transparent 60%),
    var(--bg);
  padding:52px 0 26px;
}
.courses-hero h1{font-size:32px;font-weight:800}
.courses-hero p{color:var(--muted);margin-top:8px}

/* ===== 移动端布局收尾（必须放文件末尾，覆盖基础双列规则） ===== */
/* 课程详情：1024 以下全部单列（平板横屏以下 sidebar+main 不并排） */
@media(max-width:1024px){
  .course-layout{grid-template-columns:1fr;gap:16px}
  .course-sidebar{position:static;max-height:none;padding:18px 14px;background:var(--surface);border:1px solid var(--line)}
  .sidebar-list .lesson{padding:9px 10px;font-size:14px}
  .sidebar-list .lesson .idx{width:24px;height:24px;font-size:12px}
  .sidebar-list .lesson .lt{font-size:14px}
  .sitem{padding:9px 10px;font-size:14px}
  .detail-hero{grid-template-columns:1fr;gap:0}
  .detail-cover{min-height:180px}
}

/* ===== V3 核心页面：统一电脑 / H5 信息架构 ===== */
.btn-disabled{background:#e8ebe8;color:#8c9993;border-color:#dce1dd;cursor:not-allowed;box-shadow:none}
.crumb{display:inline-flex;color:var(--muted);font-size:13px;padding:14px 0}.crumb:hover{color:var(--accent)}
.catalog-hero{padding:74px 0 60px;border-bottom:1px solid var(--line);background:linear-gradient(145deg,#fbfaf6 35%,#edf4ef)}
.catalog-hero-grid{display:grid;grid-template-columns:1.2fr .8fr;align-items:end;gap:70px}
.catalog-hero h1{font-size:46px;line-height:1.2;margin-top:14px;letter-spacing:-1px}.catalog-hero p{color:var(--ink-2);font-size:16px;line-height:1.8;max-width:480px}
.catalog-main{padding:44px 0 84px}.path-filter{display:grid;grid-template-columns:repeat(5,1fr);border:1px solid var(--line);border-radius:18px;overflow:hidden;background:#fff}
.path-filter-item{border:0;border-right:1px solid var(--line);background:transparent;text-align:left;padding:18px;cursor:pointer;min-height:90px;transition:.2s}.path-filter-item:last-child{border-right:0}.path-filter-item:hover{background:var(--surface)}.path-filter-item.active{background:#173b34;color:#fff}.path-filter-item b{display:block;font-size:14px}.path-filter-item span{display:block;font-size:11px;color:var(--muted);line-height:1.45;margin-top:6px}.path-filter-item.active span{color:rgba(255,255,255,.66)}
.catalog-result-head{display:flex;justify-content:space-between;margin:34px 0 20px;font-size:12px;color:var(--muted)}.catalog-grid{grid-template-columns:repeat(3,1fr);gap:26px}.catalog-grid .course-cover{height:184px}
.v2-detail-head{background:var(--bg)}.v2-detail-hero{padding:32px 0 72px;border-bottom:1px solid var(--line)}
.v2-detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:center}.v2-detail-copy h1{font-size:46px;line-height:1.18;letter-spacing:-1px;margin:16px 0}.v2-detail-lead{font-size:17px;color:var(--ink-2);line-height:1.8;max-width:600px}.v2-detail-meta{display:flex;gap:20px;flex-wrap:wrap;color:var(--muted);font-size:13px;margin:25px 0}.v2-detail-meta span{padding-left:13px;position:relative}.v2-detail-meta span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent);position:absolute;left:0;top:8px}.v2-detail-actions{display:flex;flex-direction:column;gap:10px;max-width:300px}.v2-detail-cover{min-height:390px;border-radius:28px;overflow:hidden;position:relative;background-color:#173b34}.v2-cover-caption{position:absolute;z-index:3;left:30px;right:30px;bottom:28px;color:#fff}.v2-cover-caption small{display:block;font-size:11px;letter-spacing:2px;margin-bottom:8px}.v2-cover-caption strong{display:block;font-size:30px;line-height:1.25}
.detail-story{padding-top:64px}.detail-story-grid{display:grid;grid-template-columns:260px 1fr;gap:70px;align-items:start}.detail-buy-panel{position:sticky;top:98px;border-top:3px solid var(--accent);background:#fff;padding:24px;border-radius:0 0 16px 16px;box-shadow:var(--shadow-sm)}.detail-buy-panel>span{font-size:12px;color:var(--muted)}.detail-price{font-size:34px;font-weight:850;margin:6px 0 18px;color:var(--accent)}.detail-price s{font-size:14px;color:var(--muted);font-weight:400;margin-left:6px}.detail-buy-panel .btn+.btn{margin-top:9px}.detail-buy-panel p{font-size:11px;color:var(--muted);line-height:1.6;margin-top:12px}
.detail-content{min-width:0}.detail-block{padding-bottom:64px;margin-bottom:60px;border-bottom:1px solid var(--line)}.detail-block:last-child{border-bottom:0}.detail-block h2{font-size:31px;line-height:1.35;margin:12px 0 28px}.outcome-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.outcome-grid>div{background:#fff;border:1px solid var(--line);padding:22px;border-radius:14px;display:flex;gap:18px}.outcome-grid span{color:var(--accent);font-size:12px;font-weight:800}.outcome-grid p{color:var(--ink-2);font-size:14px}.v2-chapters{border-top:1px solid var(--line)}.v2-chapter{display:grid;grid-template-columns:42px 1fr auto;gap:14px;align-items:center;padding:20px 4px;border-bottom:1px solid var(--line)}.v2-chapter-no{font-size:12px;color:var(--accent);font-weight:800}.v2-chapter b{font-size:15px}.v2-chapter p{font-size:12px;color:var(--muted);margin-top:4px}.v2-chapter-state{font-size:11px;color:var(--accent);background:var(--accent-soft);padding:4px 9px;border-radius:999px}.v2-chapter.locked{opacity:.62}.v2-chapter.locked .v2-chapter-state{color:var(--muted);background:var(--surface)}
.instructor-v2{display:grid;grid-template-columns:125px 1fr;align-items:center;gap:30px}.founder-mark.small{width:110px;height:130px}.founder-mark.small span{font-size:48px}.instructor-v2 h2{margin:6px 0 8px}.instructor-v2 p{color:var(--ink-2);line-height:1.75;margin-bottom:13px}.mobile-course-cta{display:none}
.learning-shell{background:#111a17;min-height:calc(100vh - 68px);color:#fff;padding:22px 0 54px}.learning-top{display:flex;justify-content:space-between;gap:24px;color:rgba(255,255,255,.68);font-size:13px;padding:14px max(24px,5vw) 20px;flex-wrap:wrap;align-items:center}.learning-top>a,.learning-top>.learning-top-title,.learning-top>.learning-top-actions,.learning-top>.learning-top-meta{min-width:0;flex-shrink:1}.learning-top>.learning-top-title{max-width:100%;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.learning-top a:hover{color:#fff}.learning-grid{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:22px}.learning-player .video-main{border:1px solid rgba(255,255,255,.09)}.video-locked{aspect-ratio:16/9;display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.65)}.learning-now{padding:24px 2px}.learning-now .section-kicker{color:#80cfb9}.learning-now h1{font-size:25px;margin:8px 0}.learning-now p{font-size:14px;color:rgba(255,255,255,.62)}.learning-outline{background:#1a2622;border:1px solid rgba(255,255,255,.08);border-radius:16px;overflow:hidden;max-height:680px}.learning-outline-head{display:flex;justify-content:space-between;padding:18px 18px 12px}.learning-outline-head span{font-size:11px;color:rgba(255,255,255,.52)}.learning-progress{height:3px;background:rgba(255,255,255,.08)}.learning-progress i{display:block;height:100%;background:#42b995}.learning-lessons{padding:8px;display:flex;flex-direction:column;gap:3px;overflow:auto}.learn-lesson{display:grid;grid-template-columns:32px 1fr;text-align:left;gap:9px;border:0;background:transparent;color:#fff;padding:12px;border-radius:10px;cursor:pointer}.learn-lesson:hover,.learn-lesson.active{background:rgba(255,255,255,.08)}.learn-lesson>span{font-size:11px;color:#80cfb9;padding-top:3px}.learn-lesson b{display:block;font-size:13px;line-height:1.4}.learn-lesson small{display:block;font-size:10px;color:rgba(255,255,255,.45);margin-top:4px}.learn-lesson.locked{opacity:.45;cursor:not-allowed}
.about-v2-hero{padding:70px 0 84px}.about-v2-grid{display:grid;grid-template-columns:.78fr 1.22fr;gap:84px;align-items:center}.about-portrait{height:500px;border-radius:180px 180px 26px 26px;background:#173b34;color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;position:relative;overflow:hidden}.about-portrait::after{content:"";position:absolute;width:330px;height:330px;border:1px solid rgba(255,255,255,.16);border-radius:50%;right:-120px;top:70px}.about-portrait-mark{font-family:serif;font-size:120px;color:#e4b760;line-height:1}.about-portrait>span{font-size:10px;letter-spacing:3px;margin-top:35px;color:#a9d3c7}.about-v2-copy h1{font-size:50px;line-height:1.2;margin:15px 0 22px}.about-v2-copy>p{font-size:17px;line-height:1.9;color:var(--ink-2);max-width:650px}.about-v2-actions{display:flex;align-items:center;gap:25px;margin-top:30px}.about-principles{display:grid;grid-template-columns:.8fr 1.2fr;gap:80px}.about-principles h2{font-size:35px;line-height:1.4;margin-top:12px}.principle-list{border-top:1px solid var(--line)}.principle-list article{display:grid;grid-template-columns:42px 1fr;gap:20px;border-bottom:1px solid var(--line);padding:22px 0}.principle-list article>span{font-size:12px;color:var(--accent);font-weight:800}.principle-list h3{font-size:18px;margin-bottom:5px}.principle-list p{font-size:14px;color:var(--muted)}.about-work>.section-kicker{margin-bottom:25px}.about-work-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}.about-work-grid>div{border-top:1px solid rgba(255,255,255,.25);padding-top:22px}.about-work-grid b{font-size:19px}.about-work-grid p{font-size:13px;color:rgba(255,255,255,.65);line-height:1.7;margin-top:8px}
.account-page{padding:54px 0 84px}.account-head{display:flex;align-items:center;gap:16px;margin-bottom:28px}.account-avatar{width:62px;height:62px;border-radius:50%;background:var(--surface);display:flex;align-items:center;justify-content:center;overflow:hidden;color:var(--accent);border:1px solid var(--line)}.account-avatar img{width:100%;height:100%;object-fit:cover;display:block;border-radius:50%}.account-head span{font-size:12px;color:var(--muted)}.account-head h1{font-size:27px}.account-meta{display:flex;align-items:center;gap:8px;margin-top:6px}.account-meta .account-tag{margin:0}.account-tabs{display:flex;border-bottom:1px solid var(--line);gap:30px;margin-bottom:30px;overflow:auto}.account-tabs button{border:0;background:transparent;padding:13px 2px;color:var(--muted);font-weight:700;white-space:nowrap;cursor:pointer;border-bottom:2px solid transparent}.account-tabs button.active{color:var(--accent);border-bottom-color:var(--accent)}.account-panel{max-width:900px}.account-overview{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.overview-stat{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px}.overview-stat span{display:block;color:var(--muted);font-size:12px}.overview-stat b{display:block;font-size:31px;margin-top:9px;color:var(--accent)}.account-next{margin-top:22px;background:#173b34;color:#fff;padding:32px;border-radius:20px}.account-next h2{font-size:25px;margin:9px 0}.account-next p{color:rgba(255,255,255,.68);font-size:14px;margin-bottom:20px}.account-empty{min-height:560px;display:flex;align-items:center;justify-content:center;text-align:center;padding:50px 18px}.account-empty>div{max-width:520px}.account-empty h1{font-size:38px;margin:13px 0}.account-empty p,.account-empty-inline p{color:var(--muted);margin-bottom:22px}.account-empty-inline{background:#fff;border:1px solid var(--line);border-radius:18px;padding:32px}.account-settings{background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px}.account-settings h2{margin-bottom:15px}.status-pill{font-size:11px;background:var(--surface);color:var(--muted);padding:5px 10px;border-radius:999px}.status-pill.on{background:var(--accent-soft);color:var(--accent)}
.member-v2-hero{padding:78px 0 66px;background:#173b34;color:#fff}.member-v2-head{max-width:760px;text-align:center}.member-v2-head .section-kicker{color:#a7dacb}.member-v2-head h1{font-size:49px;line-height:1.2;margin:16px 0}.member-v2-head p{color:rgba(255,255,255,.7);line-height:1.8}.member-v2-main{padding:0 0 84px;background:linear-gradient(#173b34 130px,var(--bg) 130px)}.member-plan-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;max-width:820px;margin:0 auto 80px}.member-plan-v2{position:relative;background:#fff;border:1px solid var(--line);border-radius:22px;padding:32px;box-shadow:0 20px 50px rgba(16,42,35,.12)}.member-plan-v2.hot{border:2px solid #d4a74d}.member-plan-recommend{position:absolute;right:20px;top:20px;background:#173b34;color:#fff;font-size:11px;padding:5px 11px;border-radius:999px}.member-plan-tag{font-size:11px;color:var(--accent);font-weight:800;letter-spacing:1px}.member-plan-v2 h2{font-size:23px;margin:10px 0}.member-plan-price{display:flex;align-items:baseline;margin:15px 0}.member-plan-price small{font-size:18px;font-weight:800}.member-plan-price b{font-size:52px;line-height:1;color:var(--accent)}.member-plan-price span{font-size:13px;color:var(--muted);margin-left:6px}.member-plan-v2>p{color:var(--muted);font-size:13px;margin-bottom:23px}.member-benefits-v2{display:grid;grid-template-columns:.8fr 1.2fr;gap:80px;margin-bottom:80px}.member-benefits-v2 h2{font-size:34px;line-height:1.4;margin-top:12px}.member-benefit-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}.member-benefit-list article{display:flex;gap:16px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px}.member-benefit-list article>span{font-size:11px;color:var(--accent);font-weight:800}.member-benefit-list b{font-size:15px}.member-benefit-list p{font-size:12px;color:var(--muted);margin-top:5px}.member-course-preview{border-top:1px solid var(--line);padding-top:52px}.member-course-preview>div:first-child{margin-bottom:26px}.member-course-preview h2{font-size:30px;margin-top:8px}

@media(max-width:980px){
  .path-filter{grid-template-columns:repeat(2,1fr)}.path-filter-item{border-bottom:1px solid var(--line)}.catalog-grid{grid-template-columns:repeat(2,1fr)}
  .v2-detail-grid{gap:35px}.detail-story-grid{grid-template-columns:220px 1fr;gap:38px}.learning-grid{grid-template-columns:1fr}.learning-outline{max-height:none}.about-v2-grid{gap:45px}.about-portrait{height:410px}.about-v2-copy h1{font-size:41px}
}
@media(max-width:760px){
  .catalog-hero{padding:48px 0 38px}.catalog-hero-grid{grid-template-columns:1fr;gap:20px}.catalog-hero h1{font-size:34px}.catalog-hero p{font-size:14px}.catalog-main{padding:26px 0 65px}.path-filter{display:flex;overflow:auto;border-radius:14px}.path-filter-item{flex:0 0 142px;min-height:76px;padding:14px;border-bottom:0}.path-filter-item span{display:none}.catalog-result-head{margin:25px 0 15px}.catalog-result-head span:last-child{display:none}.catalog-grid{grid-template-columns:1fr}.catalog-grid .course-cover{height:190px}
  .v2-detail-hero{padding:18px 0 42px}.v2-detail-grid{grid-template-columns:1fr;gap:26px}.v2-detail-copy h1{font-size:35px}.v2-detail-lead{font-size:15px}.v2-detail-cover{min-height:230px;grid-row:1}.v2-cover-caption strong{font-size:24px}.v2-detail-copy{grid-row:2}.v2-detail-actions{max-width:none}.detail-story{padding-top:40px}.detail-story-grid{grid-template-columns:1fr}.detail-buy-panel{display:none}.detail-block{padding-bottom:44px;margin-bottom:40px}.detail-block h2{font-size:26px}.outcome-grid{grid-template-columns:1fr}.v2-chapter{grid-template-columns:32px 1fr}.v2-chapter-state{grid-column:2;justify-self:start}.instructor-v2{grid-template-columns:90px 1fr}.founder-mark.small{width:82px;height:100px}.mobile-course-cta{display:block;position:fixed;left:0;right:0;bottom:54px;z-index:20;padding:10px 18px;background:rgba(251,250,246,.94);backdrop-filter:blur(10px);border-top:1px solid var(--line)}.mobile-course-cta .btn{width:100%}
  .learning-shell{min-height:calc(100vh - 56px);padding:14px 0 90px}.learning-top{align-items:flex-start;padding:10px 18px 14px}.learning-top span{max-width:58%;text-align:right}.learning-grid{gap:14px;padding:0 18px}.learning-player .video-main{border-radius:12px}.learning-now{padding:18px 2px 8px}.learning-now h1{font-size:21px}.learning-outline{border-radius:12px}.learn-lesson{padding:11px 9px}
  .about-v2-hero{padding:44px 0 58px}.about-v2-grid{grid-template-columns:1fr;gap:34px}.about-portrait{height:330px;border-radius:130px 130px 22px 22px}.about-portrait-mark{font-size:86px}.about-v2-copy h1{font-size:36px}.about-v2-copy>p{font-size:15px}.about-v2-actions{flex-wrap:wrap}.about-principles{grid-template-columns:1fr;gap:32px}.about-principles h2{font-size:29px}.about-work-grid{grid-template-columns:1fr;gap:22px}
  .account-page{padding:35px 0 70px}.account-tabs{gap:22px}.account-overview{grid-template-columns:1fr 1fr}.overview-stat:last-child{grid-column:1/-1}.account-next{padding:25px}.account-empty{min-height:480px}.account-empty h1{font-size:31px}.account-settings{padding:20px}
  .member-v2-hero{padding:50px 0 46px}.member-v2-head h1{font-size:36px}.member-v2-main{background:linear-gradient(#173b34 85px,var(--bg) 85px)}.member-plan-grid{grid-template-columns:1fr;margin-bottom:58px}.member-plan-v2{padding:26px}.member-benefits-v2{grid-template-columns:1fr;gap:30px;margin-bottom:60px}.member-benefits-v2 h2{font-size:29px}.member-benefit-list{grid-template-columns:1fr}.member-course-preview{padding-top:40px}
}
.v2-directory-section{margin-top:18px;border:1px solid var(--line,#e5e9e7);border-radius:12px;overflow:hidden;background:#fff}
.v2-directory-section>header{display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:center;padding:15px 18px;background:#f4f8f6;border-bottom:1px solid var(--line,#e5e9e7)}
.v2-directory-section>header span{font-size:12px;font-weight:700;color:#0e7c6b;background:#dff4ed;padding:4px 9px;border-radius:12px}.v2-directory-section>header h3{margin:0;font-size:17px}.v2-directory-section>header small{color:#7d8984}.v2-directory-section .v2-chapter{border-radius:0;border-width:0 0 1px}.v2-directory-section .v2-chapter:last-child{border-bottom:0}.v2-directory-empty,.learning-section-empty{padding:18px;color:#8a9590;text-align:center}
.learning-section{border-bottom:1px solid #e8ecea}.learning-section>header{display:grid;grid-template-columns:auto 1fr auto;gap:8px;align-items:center;padding:12px 14px;background:#f4f8f6}.learning-section>header span{font-size:11px;color:#0e7c6b;font-weight:700}.learning-section>header b{font-size:14px}.learning-section>header small{font-size:11px;color:#82908a}.learning-section .learn-lesson{border-top:1px solid #edf0ee}
.course-tracks{border-top:0;display:grid;gap:22px}.course-track{border:1px solid var(--line);border-radius:16px;padding:16px;background:#fbfcfb}.course-track-head{display:flex;justify-content:space-between;align-items:center;padding:4px 2px 10px}.course-track-head>div{display:flex;align-items:center;gap:12px}.course-track-head>div>span{display:grid;place-items:center;width:38px;height:38px;border-radius:11px;background:#dff4ed;color:#08795d;font-weight:800}.course-track-head h3{margin:0;font-size:18px}.course-track-head p{margin:3px 0 0;color:var(--muted);font-size:12px}.course-track-head>b{font-size:12px;color:var(--accent)}.course-track-empty{padding:22px;text-align:center;color:var(--muted);background:#fff;border-radius:11px}.course-track--article .course-track-head>div>span{background:#fff0d9;color:#a96800}
@media(max-width:760px){.course-track{padding:12px;border-radius:13px}.course-track-head h3{font-size:16px}.course-track-head p{font-size:11px}.v2-directory-section>header{grid-template-columns:auto 1fr}.v2-directory-section>header small{grid-column:2}.v2-chapter{grid-template-columns:32px 1fr}.v2-chapter-state{grid-column:2;justify-self:start}}
.video-main.article-main{aspect-ratio:auto;min-height:520px;background:#fff;color:#24312d;overflow:auto}.learning-article{padding:30px 34px;line-height:1.85}.learning-article h1,.learning-article h2,.learning-article h3{color:#17231f}.learning-article img{max-width:100%;height:auto}.learning-article blockquote{border-left:4px solid #19a980;background:#eff8f5;padding:10px 16px;margin:18px 0}@media(max-width:760px){.video-main.article-main{min-height:360px}.learning-article{padding:20px 18px}}
.account-orders{display:grid;gap:12px}.account-order{display:flex;justify-content:space-between;gap:24px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px 22px}.account-order-main>span{font-size:10px;color:var(--muted)}.account-order-main h3{font-size:17px;margin:6px 0}.account-order-main p{font-size:12px;color:var(--muted)}.account-order-side{display:grid;justify-items:end;gap:7px;flex:0 0 auto}.account-order-side>b{font-size:19px;color:var(--accent)}.account-order-side>a{font-size:12px;color:var(--accent);font-weight:700}.account-order-side small{font-size:10px;color:var(--muted)}@media(max-width:600px){.account-order{display:grid}.account-order-side{grid-template-columns:auto 1fr;justify-items:start;align-items:center}.account-order-side>a,.account-order-side small{grid-column:1/-1}}

/* ---------- 训练营（自由选课）详情页 ---------- */
.btn-sm{font-size:13px;padding:7px 14px;border-radius:8px;line-height:1.4}
.train-detail{max-width:1080px;margin:0 auto;padding:26px 0 80px}
.train-hero{position:relative;border-radius:18px;overflow:hidden;color:#fff;min-height:230px;display:flex;align-items:flex-end;background-size:cover;background-position:center}
.train-hero-shade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,30,26,.18) 0%,rgba(10,30,26,.82) 100%)}
.train-hero-inner{position:relative;padding:34px 38px;z-index:1;max-width:820px}
.train-hero-inner h1{margin:10px 0 10px;font-size:34px;line-height:1.25}
.train-hero-inner>p{margin:0 0 16px;font-size:15px;line-height:1.7;color:rgba(255,255,255,.92);max-width:640px}
.train-hero-meta{display:flex;gap:18px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.9)}
.train-hero-meta span{background:rgba(255,255,255,.16);padding:5px 12px;border-radius:999px;backdrop-filter:blur(4px)}
.train-content{background:#fff;border:1px solid var(--line,#e5e9e7);border-radius:16px;margin-top:22px;padding:26px 30px}
.train-content h2{margin:0 0 16px;font-size:20px}
.train-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.train-item{display:grid;grid-template-columns:44px 1fr auto;gap:16px;align-items:center;padding:14px 16px;border:1px solid var(--line,#e5e9e7);border-radius:12px;background:#fbfcfb}
.train-item.locked{opacity:.62;background:#f6f7f6}
.train-item.done{border-color:#bfe8db;background:#f0faf6}
.train-no{display:grid;place-items:center;width:40px;height:40px;border-radius:11px;background:#dff4ed;color:#08795d;font-weight:800;font-size:15px}
.train-item.locked .train-no{background:#eceeec;color:#9aa39f}
.train-item.done .train-no{background:#bfe8db;color:#0a7a5b}
.train-item-body{min-width:0}
.train-item-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.train-item-head b{font-size:15px;color:var(--ink,#24312d)}
.train-chapter{font-size:12px;color:#0e7c6b;background:#e4f5ef;padding:2px 9px;border-radius:999px}
.train-type{font-size:12px;color:var(--muted,#7d8984);background:#f0f2f0;padding:2px 9px;border-radius:999px}
.train-item-desc{margin:6px 0 0;font-size:13px;color:var(--muted,#7d8984);line-height:1.6}
.train-item-action{display:flex;gap:8px;align-items:center;justify-content:flex-end;flex-wrap:wrap}
.train-lock{font-size:12px;color:#9aa39f;white-space:nowrap}
.train-done{font-size:13px;color:#0a7a5b;font-weight:600;white-space:nowrap}
.train-hint{font-size:12px;color:#8a9390;white-space:nowrap}
@media(max-width:760px){
  .train-detail{padding:16px 0 90px}
  .train-hero{min-height:200px;border-radius:14px}
  .train-hero-inner{padding:24px 20px}
  .train-hero-inner h1{font-size:26px}
  .train-content{padding:18px 14px;border-radius:13px}
  .train-item{grid-template-columns:36px 1fr;gap:10px}
  .train-no{width:34px;height:34px;font-size:13px}
  .train-item-action{grid-column:2;justify-content:flex-start}
}

/* ---------- P0 学习页优化（目录卡/试读/上下节/富文本/进度） ---------- */
/* 图文本节目录卡 */
.article-toc-card{position:sticky;top:12px;z-index:5;background:#fff;border:1px solid var(--line,#e5e9e7);border-radius:14px;padding:14px 16px;margin-bottom:18px;max-height:42vh;overflow:auto;box-shadow:0 4px 18px rgba(20,50,40,.06)}
.article-toc-head{font-size:12px;font-weight:700;color:var(--muted,#7d8984);letter-spacing:.08em;text-transform:uppercase;margin-bottom:8px}
.article-toc-list{display:flex;flex-direction:column;gap:1px}
.article-toc-link{display:block;font-size:13px;color:#55635e;line-height:1.5;padding:6px 10px;border-radius:8px;text-decoration:none;border-left:2px solid transparent;transition:.15s}
.article-toc-link:hover{color:var(--accent,#0e7c6b);background:#f2faf7}
.article-toc-link.active{color:var(--accent,#0e7c6b);background:#e9f7f1;border-left-color:var(--accent,#0e7c6b);font-weight:600}
.article-toc-link.l2{padding-left:22px;font-size:12.5px}
.article-toc-link.l3{padding-left:34px;font-size:12px}
/* 试读提示条 */
.article-preview-notice{display:flex;gap:10px;align-items:flex-start;background:linear-gradient(135deg,#fff8e6,#fff3d6);border:1px solid #f0d9a0;border-radius:12px;padding:12px 16px;margin-bottom:16px;font-size:13px;color:#8a6d1f;line-height:1.6}
.article-preview-notice::before{content:'🔒';font-size:15px;line-height:1.4}
/* 上下节导航 */
.article-bottom-nav{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:18px;flex-wrap:wrap}
.article-prev,.article-next{display:inline-flex;align-items:center;gap:6px;font-size:13.5px;color:var(--accent,#0e7c6b);background:#f2faf7;border:1px solid #cdeae0;border-radius:10px;padding:10px 16px;text-decoration:none;transition:.15s;max-width:48%}
.article-prev:hover,.article-next:hover{background:#e5f6ef;transform:translateY(-1px)}
.article-nav-placeholder{flex:1}
.article-nav-done{font-size:13px;color:#0a7a5b;background:#e9f7f1;border-radius:999px;padding:8px 16px;margin-left:auto}
/* 图文富文本增强（学习页白底） */
.learning-article pre{background:#0f1d19;color:#d9f2e9;padding:16px 18px;border-radius:12px;overflow-x:auto;font-size:13px;line-height:1.7;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;margin:18px 0}
.learning-article code{background:#eef4f1;color:#c0392b;padding:2px 7px;border-radius:6px;font-size:.88em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.learning-article pre code{background:transparent;color:inherit;padding:0}
.learning-article table{border-collapse:collapse;width:100%;margin:18px 0;font-size:14px}
.learning-article th,.learning-article td{border:1px solid var(--line,#e5e9e7);padding:10px 14px;text-align:left}
.learning-article th{background:#f4f8f6;font-weight:700;color:#17231f}
.learning-article img{max-width:100%;height:auto;border-radius:10px;display:block;margin:18px auto}
.learning-shell .learning-article a{color:var(--accent,#0e7c6b);text-decoration:underline;text-underline-offset:3px}
.learning-article hr{border:0;border-top:1px solid var(--line,#e5e9e7);margin:26px 0}
.learning-article h2{border-bottom:1px solid var(--line,#e5e9e7);padding-bottom:.35em;margin-top:1.8em}
/* v473：飞书、Word、PDF 统一语义排版。 */
.learning-article .article-lead,.v2-rich-content .article-lead{color:#53655e;font-size:1.06em;line-height:1.95}
.learning-article .article-callout,.v2-rich-content .article-callout{box-sizing:border-box;margin:26px 0;padding:18px 22px;border:1px solid rgba(14,124,107,.18);border-left:4px solid var(--accent,#0e7c6b);border-radius:0 10px 10px 0;background:rgba(14,124,107,.055);color:var(--ink-2,#42544d)}
.learning-article section.article-callout> :first-child,.v2-rich-content section.article-callout> :first-child{margin-top:0}.learning-article section.article-callout> :last-child,.v2-rich-content section.article-callout> :last-child{margin-bottom:0}
.learning-article .article-flow,.v2-rich-content .article-flow{box-sizing:border-box;max-width:100%;margin:24px 0;padding:18px 20px;overflow-x:auto;border:1px solid rgba(14,124,107,.14);border-radius:10px;background:#edf5f2;color:#164f40;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em;font-weight:700;line-height:1.75;white-space:pre-wrap}
.learning-article .article-checklist,.v2-rich-content .article-checklist{padding-left:0!important;list-style:none!important}.learning-article .article-checklist>li,.v2-rich-content .article-checklist>li{position:relative;padding-left:30px}.learning-article .article-checklist>li:before,.v2-rich-content .article-checklist>li:before{position:absolute;left:1px;top:.08em;content:'○';color:var(--accent,#0e7c6b);font-weight:900}.learning-article .article-checklist>li.is-done:before,.v2-rich-content .article-checklist>li.is-done:before{content:'✓'}
.learning-article .article-code-block,.v2-rich-content .article-code-block{box-sizing:border-box;max-width:100%;margin:24px 0;padding:18px 20px;overflow:auto;border-radius:10px;background:#102f28;color:#dcf5eb;font:13px/1.75 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;white-space:pre}.learning-article .article-code-block code,.v2-rich-content .article-code-block code{padding:0;background:transparent;color:inherit;font:inherit;white-space:inherit}
@media(max-width:720px){.learning-article .article-callout,.v2-rich-content .article-callout{margin:20px 0;padding:15px 17px}.learning-article .article-flow,.v2-rich-content .article-flow,.learning-article .article-code-block,.v2-rich-content .article-code-block{margin:20px 0;padding:15px 16px;font-size:12px}}
/* 视频目录：序号徽章 + 当前播放高亮 */
.learn-no{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:9px;background:rgba(255,255,255,.1);color:#8fd8c4;font-size:11px;font-weight:700;font-style:normal}
.learn-lesson.active .learn-no{background:var(--accent,#19a980);color:#fff;box-shadow:0 3px 10px rgba(25,169,128,.4)}
.learn-lesson.locked .learn-no{background:rgba(255,255,255,.05);color:rgba(255,255,255,.35)}
/* 训练营进度条 */
.train-progress-wrap{margin-top:18px;max-width:420px}
.train-progress{height:8px;background:rgba(255,255,255,.22);border-radius:999px;overflow:hidden}
.train-progress i{display:block;height:100%;background:linear-gradient(90deg,#19a980,#42e0b2);border-radius:999px;transition:width .4s}
.train-progress-label{display:block;margin-top:8px;font-size:12px;color:rgba(255,255,255,.85)}
@media(max-width:760px){
  .article-toc-card{position:static;max-height:none}
  .article-prev,.article-next{max-width:100%;width:100%;justify-content:center}
  .article-nav-done{margin-left:0}
}

/* ---------- P1 学习增强（试看/笔记/评论/收藏/分享） ---------- */
.learning-top-actions{display:flex;gap:8px;align-items:center}
.le-fav-btn,.le-share-btn{border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.06);color:#fff;font-size:12px;padding:6px 12px;border-radius:999px;cursor:pointer;transition:.15s}
.le-fav-btn:hover,.le-share-btn:hover{background:rgba(255,255,255,.14)}
.le-fav-btn.active{border-color:#f2b0b8;background:rgba(255,90,110,.18);color:#ffb8c0}
/* 试看遮罩 */
.video-trial-wrap{position:relative}
.video-trial-wrap video{width:100%;display:block;aspect-ratio:16/9;background:#000}
.video-trial-mask{position:absolute;inset:0;display:none;align-items:center;justify-content:center;background:rgba(6,16,13,.78);backdrop-filter:blur(3px);z-index:3}
.video-trial-mask.show{display:flex}
.video-trial-box{max-width:300px;text-align:center;color:#fff;padding:26px 24px;border-radius:16px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14)}
.video-trial-lock{font-size:30px;display:block;margin-bottom:8px}
.video-trial-box b{font-size:18px;display:block;margin-bottom:6px}
.video-trial-box p{font-size:13px;color:rgba(255,255,255,.72);line-height:1.6;margin:0 0 16px}
<omitted>
.learning-shell.is-article .learning-extras{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:24px;align-items:start}
.learning-shell.is-article .learning-extras .le-card{max-width:none;width:auto}
.learning-shell.is-article .learning-extras .le-card.le-comments{width:100%;max-width:780px;margin:0 auto}
.learning-shell.is-article .learning-extras .le-card.le-notes{position:sticky;top:18px;width:100%;max-width:320px;margin:0}
@media(max-width:1180px){.learning-shell.is-article .learning-extras{grid-template-columns:1fr}}
@media(max-width:760px){.learning-shell.is-article .learning-extras{grid-template-columns:1fr;gap:14px}}
.le-card{background:#fff;border:1px solid var(--line,#e5e9e7);border-radius:16px;padding:20px;color:var(--ink,#24312d)}
.le-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.le-head b{font-size:15px}
.le-head span{font-size:12px;color:var(--muted,#7d8984)}
.le-comment-form{display:flex;flex-direction:column;gap:10px;margin-bottom:14px}
.le-comment-form textarea{width:100%;border:1px solid var(--line,#e5e9e7);border-radius:10px;padding:10px 12px;font-size:14px;font-family:inherit;resize:vertical;background:#fbfcfb;color:var(--ink,#24312d);line-height:1.6}
.le-comment-form textarea:focus{outline:none;border-color:var(--accent,#0e7c6b);background:#fff}

.le-comment-list{display:flex;flex-direction:column;gap:10px;max-height:380px;overflow:auto}
.le-empty{font-size:13px;color:var(--muted,#7d8984);padding:14px 0;text-align:center;border:1px dashed var(--line,#e5e9e7);border-radius:10px}
.le-comment-item{border:1px solid var(--line,#e5e9e7);border-radius:12px;padding:12px 14px;background:#fbfcfb}






.le-comment-head{display:flex;gap:10px;align-items:center;margin-bottom:8px}
.le-comment-avatar{width:34px;height:34px;border-radius:50%;background:#0e7c6b;color:#fff;display:grid;place-items:center;font-size:14px;font-weight:700;overflow:hidden;flex:none}
.le-comment-avatar img{width:100%;height:100%;object-fit:cover}
.le-comment-meta{display:flex;flex-direction:column}
.le-comment-meta b{font-size:13px}
.le-comment-meta span{font-size:11px;color:var(--muted,#7d8984)}
.le-comment-text{margin:0;font-size:13.5px;line-height:1.7;color:var(--ink-2,#3a4a45)}
.le-comment-reply{margin-top:8px;font-size:12.5px;background:#eef7f3;border-left:3px solid var(--accent,#0e7c6b);color:#0b5f4d;padding:8px 12px;border-radius:0 8px 8px 0}
@media(max-width:760px){
  .learning-top-actions{gap:6px}
  .le-fav-btn,.le-share-btn{font-size:11px;padding:5px 10px}
  .learning-extras{grid-template-columns:1fr;gap:14px}
  .le-card{padding:16px;border-radius:13px}
}

/* ---------- 课程详情页内嵌评论区块 ---------- */
.detail-block .le-comment-list{max-height:none;overflow:visible}
.detail-block .le-comment-form textarea{font-size:14px}
@media(max-width:760px){
  .detail-block .le-comment-list{max-height:none}
}

/* ---------- 带图评论（选择预览 + 画廊） ---------- */
.le-comment-tools{display:flex;gap:8px;align-items:center;justify-content:flex-end;flex-wrap:wrap}
.le-comment-imgs{display:flex;gap:8px;flex-wrap:wrap}
.le-comment-img{position:relative;width:72px;height:72px;border-radius:10px;overflow:hidden;border:1px solid var(--line,#e5e9e7);background:#f4f6f5;display:block}
.le-comment-img img{width:100%;height:100%;object-fit:cover;display:block}
.le-comment-img.uploading{opacity:.6}
.le-comment-img i{position:absolute;inset:0;display:grid;place-items:center;font-size:10px;color:#fff;background:rgba(10,30,26,.4);font-style:normal}
.le-comment-img-del{position:absolute;top:2px;right:2px;width:18px;height:18px;border-radius:50%;border:0;background:rgba(0,0,0,.55);color:#fff;font-size:12px;line-height:1;cursor:pointer;display:grid;place-items:center}
.le-comment-gallery{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.le-comment-gallery img{width:96px;height:96px;object-fit:cover;border-radius:10px;border:1px solid var(--line,#e5e9e7);cursor:zoom-in;transition:.15s}
.le-comment-gallery img:hover{transform:scale(1.03)}
@media(max-width:760px){
  .le-comment-gallery img{width:84px;height:84px}
}

/* 账号设置：头像行 */
.pc-setting-avatar{display:flex;align-items:center;gap:14px}
.pc-setting-avatar .av-img{border-radius:50%;object-fit:cover}
.pc-setting-main{flex:1;display:flex;align-items:center;justify-content:space-between;gap:16px}
/* 会员套餐：划线价 + 权益说明列表（2026-08-28） */
.member-plan-price s.member-plan-original{font-size:15px;color:var(--muted);margin-left:10px;font-weight:400}
.member-plan-intro{list-style:none;margin:0 0 14px;padding:0;border-top:1px dashed var(--line);padding-top:14px}
.member-plan-intro li{position:relative;padding:4px 0 4px 22px;font-size:13px;color:#2c4a42;line-height:1.6}
.member-plan-intro li::before{content:'';position:absolute;left:2px;top:11px;width:12px;height:7px;border-left:2px solid var(--accent);border-bottom:2px solid var(--accent);transform:rotate(-45deg)}
/* 会员卡片选中态（点击切换） */
.member-plan-v2{transition:transform .18s,border-color .18s,box-shadow .18s}
.member-plan-v2.selected{border:2px solid #d4a74d;box-shadow:0 24px 60px rgba(16,42,35,.18);transform:translateY(-4px)}
.member-plan-v2:not(.selected):hover{transform:translateY(-2px);box-shadow:0 16px 40px rgba(16,42,35,.1)}
.member-plan-v2 .member-plan-recommend.gold{background:#d4a74d}

/* 关于页头像（2026-08-29）：后台 about_avatar 上传的图片填满拱形卡片；无图回退「何」字占位 */
.about-portrait-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center top}

/* ============================================================
   图文专栏阅读器（2026-08-29）：三栏布局 + 个人站浅色品牌配色 + 移动端左抽屉
   配色沿用站点 token：墨绿青 --accent(#0e7c6b) / 暖纸底 --bg(#fbfaf6) / 金 --gold(#b9831f)
   仅作用于 .learning-shell.is-article，不影响视频学习页（保持深色）
   ============================================================ */
.learning-shell.is-article{background:var(--bg);color:var(--ink);min-height:calc(100vh - 68px)}
/* 阅读页整体放宽：不锁死在 1140，让中间正文明显变大 */
.learning-shell.is-article .container{max-width:1320px}
.learning-shell.is-article .learning-top{color:var(--muted);padding-top:16px;padding-bottom:18px;border-bottom:1px solid var(--line);background:#fff;align-items:center}.learning-shell.is-article .learning-top>a,.learning-shell.is-article .learning-top>.learning-top-actions{flex-shrink:0}
.learning-shell.is-article .learning-top a{color:var(--ink-2)}
.learning-shell.is-article .learning-top a:hover{color:var(--accent)}
.learning-shell.is-article .learning-top-title{color:var(--ink)}
.learning-shell.is-article .learning-top-meta{color:var(--muted)}
.learning-shell.is-article .learning-now .section-kicker{color:var(--accent)}
.learning-shell.is-article .learning-now h1{color:var(--ink)}
.learning-shell.is-article .learning-now p{color:var(--ink-2)}
.learning-shell.is-article .le-fav-btn,.learning-shell.is-article .le-share-btn{border:1px solid var(--line);background:var(--surface);color:var(--ink-2)}
.learning-shell.is-article .le-fav-btn:hover,.learning-shell.is-article .le-share-btn:hover{background:var(--accent-soft);color:var(--accent-ink)}
.learning-shell.is-article .le-fav-btn.active{border-color:var(--gold);background:var(--gold-soft);color:var(--gold-ink)}

/* 三栏栅格：左目录(220) / 中正文(1fr) / 右本节大纲(180) */
.learning-grid.learning-grid--article{grid-template-columns:220px minmax(0,1fr) 180px;align-items:start;gap:16px}
.learning-grid.learning-grid--article:not(.has-toc){grid-template-columns:220px minmax(0,1fr)}

/* 移动端目录开关（桌面隐藏） */
.article-dir-toggle{display:none}
.article-drawer-backdrop{display:none}
/* 移动端才出现的目录按钮：浮在正文 H1 上方/左上角 */
.article-h1-dir-toggle{display:none}

/* ============================================================
   图文阅读 v82：bluebook 式开放式正文 + 文章末尾付费墙
   ============================================================ */
.learning-shell.is-article{background:#fdfcf9}
.learning-shell.is-article .learning-top{border-bottom:1px solid var(--line);background:#fdfcf9}
.learning-shell.is-article .container{max-width:1280px}
.learning-grid.learning-grid--article{grid-template-columns:232px minmax(0,1fr) 206px;gap:34px}
.learning-grid.learning-grid--article:not(.has-toc){grid-template-columns:232px minmax(0,1fr)}

.learning-shell.is-article .learning-outline{background:transparent;border:0;box-shadow:none;border-radius:0;padding-right:10px;position:sticky;top:84px}
.learning-shell.is-article .learning-outline-head{padding:4px 0 14px}
.learning-shell.is-article .learning-outline-head b{display:block;font-size:18px}
.learning-shell.is-article .learning-outline-head span{color:var(--muted);font-size:12px}
.learning-shell.is-article .learning-progress{height:4px;border-radius:999px;margin-bottom:4px}
.learning-shell.is-article .learning-lessons{padding:0;gap:0}
.learning-shell.is-article .learning-section{border:0;margin-top:10px}
.learning-shell.is-article .learning-section>header{display:flex;align-items:baseline;gap:8px;background:transparent;border-bottom:1px solid rgba(223,228,223,.48);padding:12px 0 8px}
.learning-shell.is-article .learning-section>header span{color:var(--muted);font-size:11px;font-weight:700;letter-spacing:.08em}
.learning-shell.is-article .learning-section>header b{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--ink);font-size:14px;font-weight:800}
.learning-shell.is-article .learning-section>header small{margin-left:auto;color:#98a39d;font-size:11px}
.learning-shell.is-article .learning-section .learn-lesson{border-top:0;margin:0}
.learning-shell.is-article .learn-lesson{display:grid;grid-template-columns:26px minmax(0,1fr);align-items:start;gap:10px;padding:10px 2px;border-radius:0;background:transparent;color:var(--ink-2);cursor:pointer}
.learning-shell.is-article .learn-lesson>span{min-width:20px;padding-top:1px;color:#a4b0aa;font-size:11.5px;font-weight:700;font-variant-numeric:tabular-nums;text-align:left}
.learning-shell.is-article .learn-lesson b{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--ink);font-size:14px;font-weight:650;line-height:1.45}
.learning-shell.is-article .learn-lesson small{display:block;margin-top:2px;color:#98a39d;font-size:11.5px}
.learning-shell.is-article .learn-lesson:hover{background:rgba(14,124,107,.045)}
.learning-shell.is-article .learn-lesson.active{background:transparent;box-shadow:none;color:var(--accent-ink)}
.learning-shell.is-article .learn-lesson.active>span{color:var(--accent)}
.learning-shell.is-article .learn-lesson.active b{color:var(--accent-ink);font-weight:800}
.learning-shell.is-article .learn-lesson.locked{color:#a9b2ad;opacity:1}
.learning-shell.is-article .learn-lesson.locked b{color:#a9b2ad}

.learning-shell.is-article .learning-player{min-width:0}
.learning-shell.is-article .learning-player .video-main{border:0;box-shadow:none;border-radius:0}
.learning-shell.is-article .video-main.article-main{background:transparent;min-height:0;overflow:visible;padding:34px 0 24px}
.learning-shell.is-article .learning-article{max-width:760px;margin:0 auto;padding:0;background:transparent;box-shadow:none;border-radius:0}
.learning-shell.is-article .learning-article{font-size:17px;line-height:1.9;letter-spacing:.01em}
.learning-shell.is-article .learning-article p{margin:1.15em 0}
.learning-shell.is-article .learning-article h1{font-size:38px;line-height:1.22;font-weight:830;letter-spacing:-.035em;margin:14px 0 30px}
.learning-shell.is-article .learning-article h2{position:relative;margin:52px 0 20px;padding:0 0 12px 20px;border-bottom:1px solid rgba(223,228,223,.8);font-size:27px;line-height:1.35;font-weight:800;letter-spacing:-.025em}
.learning-shell.is-article .learning-article h2::before{content:"";position:absolute;left:0;top:12px;width:8px;height:8px;background:var(--accent);border-radius:2px}
.learning-shell.is-article .learning-article h3{margin:36px 0 14px;font-size:21px;line-height:1.45;font-weight:760;letter-spacing:-.015em}
.learning-shell.is-article .learning-article h4,.learning-shell.is-article .learning-article h5,.learning-shell.is-article .learning-article h6{margin:28px 0 12px;font-size:18px;color:var(--ink)}
.learning-shell.is-article .learning-article ul,.learning-shell.is-article .learning-article ol{margin:20px 0;padding-left:22px}
.learning-shell.is-article .learning-article li{margin:7px 0}
.learning-shell.is-article .learning-article li::marker{color:var(--accent);font-weight:700}
.learning-shell.is-article .learning-article blockquote{margin:26px 0;padding:18px 24px;border-left:3px solid var(--accent);background:rgba(14,124,107,.045);color:var(--ink-2);font-size:16px;line-height:1.8;border-radius:0 8px 8px 0}
.learning-shell.is-article .learning-article img{margin:28px auto;border-radius:6px}
.learning-shell.is-article .learning-article table{margin:28px 0;font-size:15px;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.learning-shell.is-article .learning-article th{background:rgba(14,124,107,.06);color:var(--accent-ink)}
.learning-shell.is-article .learning-article hr{margin:40px 0;border-top:1px solid rgba(223,228,223,.72)}
.learning-shell.is-article .learning-article>p:first-child>img:only-child,
.learning-shell.is-article .learning-article>div:first-child>p:first-child>img:only-child{margin:0 auto 26px}

.learning-shell.is-article .article-page-toc{position:sticky;top:84px;align-self:start;background:transparent;border:0;box-shadow:none;border-radius:0;padding:4px 0 0 20px;border-left:1px solid var(--line);max-height:calc(100vh - 130px);overflow:auto;overscroll-behavior:contain}
.learning-shell.is-article .article-page-toc .article-toc-head{margin-bottom:12px;color:var(--muted);font-size:11px;letter-spacing:.1em;text-transform:uppercase}
.learning-shell.is-article .article-page-toc .article-toc-link{border-left:0;padding:5px 0}
.learning-shell.is-article .article-page-toc .article-toc-link.active{background:transparent;color:var(--accent-ink);font-weight:700}
.learning-shell.is-article .article-page-toc .article-toc-link.locked{color:#9a7a22}
.learning-shell.is-article .article-page-toc .article-toc-link.locked::after{content:" 🔒";font-size:12px}
.learning-shell.is-article .article-bottom-nav{max-width:760px;margin:52px auto 0;padding-top:22px;border-top:1px solid rgba(223,228,223,.8);align-items:stretch}

.article-paywall{max-width:760px;margin:44px auto 0;padding:34px 38px 30px;background:linear-gradient(180deg,#fffdf7,#fff);border:1px solid rgba(223,228,223,.88);border-radius:8px;box-shadow:0 18px 44px rgba(14,80,63,.055);text-align:center}
.article-paywall-eyebrow{display:inline-flex;align-items:center;justify-content:center;padding:6px 12px;margin:0 0 14px;background:var(--gold-soft);color:var(--gold-ink);font-size:12px;font-weight:700;letter-spacing:.12em;border-radius:999px}
.article-paywall h2{margin:0;color:var(--ink);font-size:29px;line-height:1.3;font-weight:820;letter-spacing:-.02em}
.article-paywall-copy{max-width:540px;margin:14px auto 0;color:var(--ink-2);font-size:15px;line-height:1.8}
.article-paywall-actions{display:flex;justify-content:center;align-items:center;gap:12px;flex-wrap:wrap;margin-top:24px}
.article-paywall-btn{min-width:220px;min-height:46px;font-size:15px;font-weight:800}
.article-paywall-link{min-height:46px}
.article-paywall-note{margin:14px 0 0;color:var(--muted);font-size:12px;line-height:1.6}
.article-paywall.paywall-highlight{animation:articlePaywallHighlight 1.6s ease}
@keyframes articlePaywallHighlight{0%,100%{box-shadow:0 18px 44px rgba(14,80,63,.055);border-color:rgba(223,228,223,.88)}30%,70%{box-shadow:0 0 0 6px rgba(212,167,77,.16);border-color:var(--gold)}}

@media (max-width:1080px){
  .learning-grid.learning-grid--article,.learning-grid.learning-grid--article:not(.has-toc){grid-template-columns:minmax(0,1fr);gap:24px}
  .learning-shell.is-article .learning-outline{background:#fff;border-right:1px solid var(--line);padding:74px 8px 24px 6px}
  .learning-shell.is-article .video-main.article-main{padding:8px 0 16px}
  .learning-shell.is-article .learning-article h1{font-size:33px;margin-bottom:24px}
  .learning-shell.is-article .learning-article h2{font-size:25px;margin-top:44px}
  .article-paywall{margin-top:32px;padding:28px 22px 26px}
}

@media (max-width:620px){
  .learning-shell.is-article .video-main.article-main{padding:4px 0 12px}
  .learning-shell.is-article .learning-article{font-size:16px;line-height:1.86}
  .learning-shell.is-article .learning-article h1{font-size:29px;line-height:1.25;margin:8px 0 22px}
  .learning-shell.is-article .learning-article h2{font-size:22px;padding-left:16px;margin:38px 0 16px}
  .learning-shell.is-article .learning-article h2::before{width:7px;height:7px;top:10px}
  .learning-shell.is-article .learning-article h3{font-size:19px;margin:30px 0 12px}
  .learning-shell.is-article .learning-article blockquote{padding:16px 18px;font-size:15px}
  .learning-shell.is-article .learning-article img{margin:22px auto;border-radius:5px}
  .article-paywall{padding:24px 18px 22px}
  .article-paywall h2{font-size:24px}
  .article-paywall-actions{align-items:stretch;flex-direction:column}
  .article-paywall-btn,.article-paywall-link{width:100%}
  .article-paywall-btn{min-width:0}
}

@media (max-width:1080px){
  .learning-grid.learning-grid--article,
  .learning-grid.learning-grid--article:not(.has-toc){grid-template-columns:minmax(0,1fr);gap:16px}
  .learning-shell.is-article .article-page-toc{display:none}
  /* 左目录变离屏抽屉，从左侧滑出 */
  .learning-shell.is-article .learning-outline{position:fixed;top:0;left:0;bottom:0;width:min(84vw,300px);max-height:none;transform:translateX(-100%);transition:transform .28s cubic-bezier(.19,1,.22,1);z-index:120;border-radius:0 16px 16px 0;box-shadow:var(--shadow);overflow:auto;padding-top:64px}
  .learning-shell.is-article.drawer-open .learning-outline{transform:translateX(0)}
  .article-drawer-backdrop{display:none;position:fixed;inset:0;background:rgba(15,30,25,.42);z-index:110}
  .learning-shell.is-article.drawer-open .article-drawer-backdrop{display:block}
  /* 窄屏：顶栏不再放目录按钮（避免挤标题），改为顶栏 padding 加大避免贴边 */
  .article-dir-toggle{display:none !important}
  .learning-shell.is-article .learning-top{padding:14px max(20px,5vw) 16px;row-gap:8px;flex-wrap:wrap;align-items:center}
  /* 移动端文章区顶部出现的浮动圆按钮 */
  .article-h1-dir-toggle{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:#fff;color:var(--accent);font-size:13px;font-weight:600;padding:8px 14px;border-radius:999px;cursor:pointer;box-shadow:var(--shadow);margin:0 0 14px}
  .article-h1-dir-toggle::before{content:"☰ ";font-size:15px;line-height:1}
}

/* ============================================================
   v90 全站统一：克制的编辑部视觉 + PC / 手机一致交互
   ============================================================ */
:root{
  --maxw:1180px;
  --reader-max:760px;
  --control-h:44px;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 18px 48px rgba(24,55,45,.08);
  --shadow-sm:0 8px 24px rgba(24,55,45,.06)
}
.site-header{background:rgba(251,250,246,.9);backdrop-filter:saturate(150%) blur(18px);-webkit-backdrop-filter:saturate(150%) blur(18px)}
.nav{min-height:72px}
.nav-links{gap:32px}
.nav-links a{font-weight:650;letter-spacing:.01em}
.btn,.nav-search,.menu-btn{min-height:var(--control-h)}
.btn{display:inline-flex;align-items:center;justify-content:center}
.course-card{border:1px solid rgba(209,219,213,.82);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow-sm);overflow:hidden;transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease}
.course-card:hover{transform:translateY(-3px);border-color:rgba(14,124,107,.28);box-shadow:var(--shadow)}
.course-body{display:flex;flex-direction:column;min-height:244px;padding:22px}
.course-body .desc{display:-webkit-box;overflow:hidden;-webkit-box-orient:vertical;-webkit-line-clamp:2}
.course-body .course-meta{margin-top:auto;padding-top:16px}
.course-foot{padding-top:14px;border-top:1px solid rgba(223,228,223,.72)}
.course-foot .price s,.detail-price s{margin-left:7px;color:#a0aaa5;font-size:.62em;font-weight:500}
.path-filter,.detail-block,.detail-buy-panel,.member-plan-v2,.member-benefits-v2,.le-card{border-color:rgba(209,219,213,.82);box-shadow:var(--shadow-sm)}
.catalog-result-head{padding:18px 0;color:var(--muted)}
.course-track-empty{display:flex;min-height:150px;flex-direction:column;align-items:center;justify-content:center;gap:10px;padding:28px;border:1px dashed var(--line);border-radius:12px;color:var(--muted);text-align:center}
.course-track-empty.is-error{border-color:rgba(185,131,31,.32);background:var(--gold-soft);color:var(--gold-ink)}
.course-track-empty p{max-width:520px;font-size:13px}
.ui-spinner{width:24px;height:24px;border:2px solid var(--accent-soft);border-top-color:var(--accent);border-radius:50%;animation:uiSpin .8s linear infinite}
@keyframes uiSpin{to{transform:rotate(360deg)}}
.learning-top{min-height:66px;padding-inline:max(24px,calc((100vw - 1500px)/2));background:rgba(253,252,249,.94)!important;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px)}
.learning-top-title{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:700}
.learning-top-actions button{min-height:36px}
.learning-shell.is-article .learning-article{max-width:var(--reader-max)}
.learning-shell.is-article .learning-shell .learning-article a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.learning-shell.is-article .learning-article pre{max-width:100%;overflow:auto;border-radius:10px}
.learning-shell.is-article .learning-article table{display:block;max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}
.article-media{width:100%;margin:28px auto}
.article-media-image{width:auto;max-width:100%;height:auto;margin:0 auto!important;border:1px solid rgba(223,228,223,.8);box-shadow:0 12px 32px rgba(24,55,45,.07)}
.article-media-error{display:none;min-height:150px;align-items:center;justify-content:center;padding:28px;border:1px dashed rgba(185,131,31,.4);border-radius:10px;background:#fffaf0;color:var(--gold-ink);font-size:14px;text-align:center}
.article-media.is-broken .article-media-image{display:none}
.article-media.is-broken .article-media-error{display:flex}
.le-comment-form{display:flex;flex-direction:column;gap:10px}
.le-comment-list{margin-top:18px}
.modal-box{border:1px solid rgba(209,219,213,.9);box-shadow:0 30px 90px rgba(14,45,36,.18)}

@media (max-width:1080px){
  .learning-top{position:sticky;top:0;z-index:80;padding-inline:22px}
  .learning-top-title{order:1;max-width:calc(100vw - 190px)}
  .learning-top-actions{margin-left:auto;order:2}
  .learning-top-meta{order:3;width:100%;font-size:12px}
  .learning-grid.learning-grid--article{padding-inline:clamp(20px,5vw,56px)}
  #serviceContactBtn{right:18px!important;bottom:88px!important}
}

@media (max-width:720px){
  .container{padding-inline:18px}
  .nav{min-height:62px}
  .logo-text{font-size:18px}
  .course-grid,.catalog-grid,.home-course-grid,.member-plan-grid{grid-template-columns:1fr!important}
  .course-card{border-radius:14px}
  .course-body{min-height:0;padding:18px}
  .course-cover{height:190px!important}
  .catalog-hero,.v2-detail-hero,.member-v2-hero{padding-top:46px;padding-bottom:42px}
  .catalog-hero h1,.v2-detail-copy h1,.member-v2-head h1{font-size:clamp(32px,10vw,44px);line-height:1.12}
  .v2-detail-grid,.detail-story-grid,.member-benefits-v2{grid-template-columns:1fr!important}
  .v2-detail-cover{min-height:230px;order:-1}
  .detail-buy-panel{position:static}
  .v2-detail-actions{display:grid;grid-template-columns:1fr;gap:10px}
  .mobile-course-cta{padding:10px 16px calc(10px + env(safe-area-inset-bottom));background:rgba(255,255,255,.94);backdrop-filter:blur(14px)}
  .learning-top{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:7px 12px;padding:11px 18px 12px}
  .learning-top>a{grid-column:1/2;font-size:12px}
  .learning-top-title{grid-column:1/-1;grid-row:2;max-width:none;font-size:14px}
  .learning-top-actions{grid-column:2;grid-row:1;margin:0}
  .learning-top-actions button{padding:7px 9px;font-size:12px}
  .learning-top-meta{grid-column:1/-1;grid-row:3;width:auto}
  .learning-grid.learning-grid--article{padding-inline:18px}
  .learning-shell.is-article .learning-article{font-size:16px;line-height:1.82}
  .article-media{margin:22px auto}
  .article-media-error{min-height:120px;padding:22px 16px}
  .article-bottom-nav{display:grid!important;grid-template-columns:1fr;gap:10px}
  .article-prev,.article-next,.article-nav-done{width:100%;text-align:left}
  .learning-extras>.le-card{width:100%!important}
  .le-comment-tools{display:grid;grid-template-columns:1fr 1fr}
  .modal{padding:12px;align-items:center}
  .modal-box{width:min(100%,calc(100vw - 24px));max-width:none!important;max-height:min(86dvh,820px);overflow:auto;border-radius:22px}
  #serviceContactBtn{right:14px!important;bottom:82px!important;min-height:42px;padding:9px 16px!important}
  .site-footer{padding-bottom:84px}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}

/* v291：页脚上方统一紧凑呼吸空间，避免页面底部 padding 与 #app padding 叠加。 */
body:not(.route-learning) #app{padding-bottom:0!important}
body:not(.route-learning) #app > :last-child{margin-bottom:0!important;padding-bottom:32px!important}
body:not(.route-learning) #app > :last-child > :last-child{margin-bottom:0!important;padding-bottom:0!important}

/* v532：微信内支付宝全屏指向真实页面右上角，不再展示复制链接或模拟浏览器栏。 */
#alipayBrowserModal{padding:0;align-items:stretch;justify-content:stretch;background:#fff;z-index:220}
.alipay-open-guide{position:relative;width:100%;height:100%;max-width:none!important;border:0;border-radius:0;box-shadow:none;background:#fff;overflow:hidden}
.alipay-open-arrow{position:absolute;top:max(4px,env(safe-area-inset-top));right:18px;width:46px;height:68px;color:#ff6a00;pointer-events:none;opacity:.95}
.alipay-open-copy{position:absolute;left:50%;top:43%;transform:translate(-50%,-50%);width:min(88vw,360px);text-align:center;font-size:21px;font-weight:700;color:#111827;line-height:1.72}
.alipay-open-copy b{color:#ff6a00}
.alipay-open-confirm{position:absolute;left:18px;right:18px;bottom:calc(18px + env(safe-area-inset-bottom));width:auto}