/* roulang page: index */
:root{
  --ink:#241C3C;
  --ink-deep:#171126;
  --accent:#FF6A2B;
  --lime:#B8F24D;
  --bg:#F7F5F1;
  --bg-2:#EFEBE4;
  --card:#FFFFFF;
  --line:#E3DED6;
  --text:#1E1B24;
  --muted:#6B6577;
  --radius-card:16px;
  --radius-btn:11px;
  --radius-input:10px;
  --shadow-sm:0 1px 2px rgba(36,28,60,.06);
  --shadow-md:0 1px 2px rgba(36,28,60,.06),0 8px 24px rgba(36,28,60,.06);
  --shadow-lg:0 4px 10px rgba(36,28,60,.07),0 18px 42px rgba(36,28,60,.11);
  --section-gap:88px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);font-size:16.5px;line-height:1.9;
  color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.35;letter-spacing:-.2px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}

.wrap{width:100%;max-width:1200px;margin-inline:auto;padding-inline:20px}
.section{padding-block:var(--section-gap)}
.section--alt{background:var(--bg-2)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:42px;flex-wrap:wrap}
.section-head h2{font-size:clamp(22px,2.5vw,30px);max-width:640px}
.kicker{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:2.4px;color:var(--accent);margin-bottom:12px}
.section-note{font-size:14.5px;color:var(--muted);max-width:400px;line-height:1.85}

/* 顶部公告 */
.topbar{background:var(--ink-deep);color:#CFC9DE;font-size:13px;height:36px;display:flex;align-items:center}
.topbar .wrap{display:flex;align-items:center;gap:10px;overflow:hidden;white-space:nowrap}
.topbar i{color:var(--lime)}
.topbar span{overflow:hidden;text-overflow:ellipsis}
.topbar a{color:var(--lime);margin-left:auto;flex:0 0 auto}

/* 页头 */
.site-header{position:sticky;top:0;z-index:1030;background:rgba(247,245,241,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);transition:box-shadow .25s ease}
.site-header.is-scrolled{box-shadow:0 6px 22px rgba(36,28,60,.09)}
.nav-row{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:72px}
.logo{display:flex;align-items:center;gap:11px;max-width:230px}
.logo .mark{width:36px;height:36px;flex:0 0 auto;border-radius:11px;background:linear-gradient(140deg,var(--ink) 0%,#413363 100%);color:#fff;font-size:16px;font-weight:700;display:grid;place-items:center}
.logo .name{font-size:17px;font-weight:700;color:var(--ink);line-height:1.25;white-space:nowrap}
.logo .name small{display:block;font-size:11px;font-weight:500;letter-spacing:1.4px;color:var(--muted)}
.nav-shell{display:flex;align-items:center;gap:16px}
.main-nav{display:flex;align-items:center;gap:4px}
.main-nav a{position:relative;display:flex;align-items:center;height:72px;padding:0 15px;font-size:15.5px;font-weight:500;color:var(--text)}
.main-nav a::after{content:"";position:absolute;left:15px;right:15px;bottom:16px;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .25s ease}
.main-nav a:hover::after,.main-nav a.active::after{transform:scaleX(1)}
.main-nav a:hover{color:var(--ink)}
.main-nav a.active{font-weight:700;color:var(--ink)}
.btn-nav{display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 22px;border-radius:var(--radius-btn);background:var(--ink);color:#fff;font-size:15px;font-weight:600;transition:background .2s ease,transform .2s ease,box-shadow .2s ease}
.btn-nav:hover{background:var(--accent);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md)}
.nav-toggle{display:none;width:46px;height:46px;border:1px solid var(--line);border-radius:12px;background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;transition:transform .25s ease,opacity .25s ease}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 26px;border-radius:var(--radius-btn);border:1px solid transparent;font-size:15.5px;font-weight:600;cursor:pointer;text-align:center;transition:transform .2s ease,background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease}
.btn-primary{background:var(--ink);color:#fff;box-shadow:var(--shadow-md)}
.btn-primary:hover{background:var(--accent);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.btn-ghost{background:rgba(255,255,255,.10);color:#fff;border-color:rgba(255,255,255,.45)}
.btn-ghost:hover{background:#fff;color:var(--ink);border-color:#fff;transform:translateY(-2px)}
.btn-outline{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-outline:hover{border-color:var(--ink);background:#F1EDF7;color:var(--ink)}
.btn-block{width:100%}
.link-more{font-size:14.5px;font-weight:600;color:var(--ink);display:inline-flex;align-items:center;gap:6px;border-bottom:1px solid transparent;transition:.2s}
.link-more:hover{color:var(--accent);border-color:var(--accent)}

/* Hero */
.hero{position:relative;overflow:hidden;background:var(--ink-deep)}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;transform:scale(1.03)}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(104deg,rgba(23,17,38,.94) 0%,rgba(31,23,54,.80) 48%,rgba(36,28,60,.42) 100%)}
.hero-inner{position:relative;z-index:2;padding-block:92px 118px;max-width:840px}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:1.2px;color:var(--lime);border:1px solid rgba(184,242,77,.42);background:rgba(184,242,77,.10);padding:6px 14px;border-radius:999px}
.hero h1{margin-top:22px;font-size:clamp(28px,4.2vw,44px);line-height:1.32;color:#fff}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.85;color:#D6D0E4;max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:38px}
.hero-badges li{padding:8px 16px;border-radius:999px;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.22);color:#EDEAF5;font-size:13.5px}

/* 数据条 */
.metrics{margin-top:-62px;position:relative;z-index:6}
.metrics-grid{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-lg);padding:32px 30px;display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.metric strong{display:block;font-size:clamp(24px,3vw,34px);font-weight:700;color:var(--ink);letter-spacing:-1px;line-height:1.2}
.metric span{font-size:13.5px;color:var(--muted)}
.metric + .metric{border-left:1px solid var(--line);padding-left:22px}

/* 时间线 */
.timeline{max-width:900px}
.tl-item{display:grid;grid-template-columns:96px 1fr;gap:32px;padding-bottom:34px}
.tl-item:last-child{padding-bottom:0}
.tl-time{font-variant-numeric:tabular-nums;font-size:19px;font-weight:700;color:var(--ink);text-align:right;padding-top:2px}
.tl-body{position:relative;border-left:2px solid var(--line);padding:0 0 6px 28px}
.tl-body::before{content:"";position:absolute;left:-7px;top:11px;width:12px;height:12px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(255,106,43,.16)}
.tl-item:nth-child(even) .tl-body::before{background:var(--lime);box-shadow:0 0 0 4px rgba(184,242,77,.24)}
.tl-body h3{font-size:19px;margin-bottom:8px}
.tl-body p{font-size:15px;color:var(--muted);line-height:1.85;max-width:640px}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.tag{display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;background:#F1EDF7;color:#4B4168;font-size:12.5px;font-weight:600}
.tag-lime{background:rgba(184,242,77,.28);color:#3E4F13}
.tag-orange{background:rgba(255,106,43,.14);color:#A83C10}

/* 亮点卡片 */
.hl-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.hl-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.hl-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#D6CFE6}
.hl-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hl-body{padding:20px 22px 26px}
.hl-body h3{font-size:18px;margin-bottom:10px}
.hl-body p{font-size:14.5px;color:var(--muted);line-height:1.8}
.hl-body .tag{margin-top:14px}

/* 分类入口 */
.entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.entry-card{display:flex;align-items:center;gap:18px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);padding:22px 24px;box-shadow:var(--shadow-sm);transition:transform .25s ease,box-shadow .25s ease}
.entry-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.entry-card .ico{width:46px;height:46px;flex:0 0 auto;border-radius:13px;background:var(--bg-2);display:grid;place-items:center;color:var(--ink);font-size:18px}
.entry-card strong{display:block;font-size:16.5px;color:var(--ink);font-weight:700}
.entry-card em{font-style:normal;font-size:13.5px;color:var(--muted);line-height:1.6}
.entry-card i.arrow{margin-left:auto;color:var(--muted);transition:transform .25s ease,color .25s ease}
.entry-card:hover i.arrow{transform:translateX(4px);color:var(--accent)}

/* 票种 */
.price-grid{display:grid;grid-template-columns:1fr 1.14fr 1fr;gap:24px;align-items:start}
.price-card{position:relative;display:flex;flex-direction:column;height:100%;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);padding:30px 26px;box-shadow:var(--shadow-sm);transition:transform .25s ease,box-shadow .25s ease}
.price-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.price-card.featured{border:2px solid var(--ink);box-shadow:var(--shadow-lg);transform:translateY(-14px);background:linear-gradient(180deg,#FCFAF7 0%,#FFFFFF 42%)}
.price-card.featured:hover{transform:translateY(-17px)}
.price-card.minimal{background:transparent;border-style:dashed;box-shadow:none}
.price-badge{position:absolute;top:-14px;left:26px;background:var(--accent);color:#fff;font-size:12.5px;font-weight:700;letter-spacing:.6px;padding:5px 15px;border-radius:999px}
.price-card h3{font-size:19px}
.price-amount{margin:14px 0 6px;font-size:34px;font-weight:700;color:var(--ink);letter-spacing:-1px;line-height:1.1}
.price-amount small{font-size:14px;font-weight:500;color:var(--muted);letter-spacing:0;margin-left:6px}
.price-desc{font-size:14px;color:var(--muted);line-height:1.8;min-height:46px}
.price-list{margin:22px 0 28px;display:grid;gap:11px}
.price-list li{position:relative;padding-left:24px;font-size:14.5px;color:#39334A;line-height:1.75}
.price-list li::before{content:"";position:absolute;left:0;top:9px;width:13px;height:2px;background:var(--accent);border-radius:2px}
.price-card.minimal .price-list li::before{background:var(--muted)}
.price-card .btn{margin-top:auto}

/* 资讯列表 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.news-card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);padding:26px 24px;box-shadow:var(--shadow-sm);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#D6CFE6}
.news-card h3{font-size:17.5px;line-height:1.6;margin-bottom:12px}
.news-card h3 a{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card:hover h3 a{color:var(--accent)}
.news-card p{font-size:14.5px;color:var(--muted);line-height:1.85;margin-bottom:18px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--muted);border-top:1px solid var(--line);padding-top:14px}
.empty-state{grid-column:1/-1;text-align:center;padding:56px 24px;background:var(--card);border:1px dashed var(--line);border-radius:var(--radius-card)}
.empty-state i{font-size:26px;color:var(--muted)}
.empty-state p{margin:14px 0 20px;color:var(--muted);font-size:15px}

/* FAQ */
.faq-list{display:grid;gap:12px;max-width:880px;margin-inline:auto}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease}
.faq-item.open{border-color:#D6CFE6;box-shadow:var(--shadow-sm)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 24px;background:none;border:0;text-align:left;font-size:17px;font-weight:600;color:var(--ink);cursor:pointer}
.faq-q .plus{position:relative;flex:0 0 auto;width:22px;height:22px}
.faq-q .plus::before,.faq-q .plus::after{content:"";position:absolute;background:var(--accent);border-radius:2px;transition:transform .25s ease}
.faq-q .plus::before{left:0;top:10px;width:22px;height:2px}
.faq-q .plus::after{left:10px;top:0;width:2px;height:22px}
.faq-item.open .plus::after{transform:scaleY(0)}
.faq-a{max-height:0;overflow:hidden;background:var(--bg-2);transition:max-height .3s ease}
.faq-item.open .faq-a{max-height:460px}
.faq-a p{padding:18px 24px 22px;font-size:15.5px;color:#3B3548;line-height:1.9}

/* 报名表单 */
.signup{background:var(--ink);color:#fff;position:relative;overflow:hidden}
.signup::after{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(255,106,43,.22) 0%,rgba(255,106,43,0) 70%)}
.signup .wrap{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.signup h2{color:#fff;font-size:clamp(22px,2.5vw,30px);margin-bottom:20px}
.signup .lead{color:#C6C0D6;font-size:15.5px;line-height:1.9;max-width:460px}
.signup-list{margin-top:28px;display:grid;gap:14px}
.signup-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:#D8D3E4}
.signup-list i{color:var(--lime);margin-top:5px}
.form-card{background:var(--card);border-radius:var(--radius-card);padding:30px 28px;box-shadow:var(--shadow-lg);color:var(--text)}
.form-card h3{font-size:19px;margin-bottom:6px}
.form-card .form-tip{font-size:13.5px;color:var(--muted);margin-bottom:22px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1/-1}
.field label{font-size:14px;font-weight:600;color:var(--ink)}
.field .req{color:var(--accent)}
.field input,.field select,.field textarea{width:100%;min-height:48px;padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius-input);background:#fff;font-size:15px;transition:border-color .2s ease,box-shadow .2s ease}
.field textarea{min-height:112px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 3px rgba(36,28,60,.10)}
.field.is-invalid input,.field.is-invalid select,.field.is-invalid textarea{border-color:#D93A2B;background:#FFF8F7}
.field .err{font-size:12.5px;color:#D93A2B;display:none}
.field.is-invalid .err{display:block}
.form-actions{grid-column:1/-1;display:flex;flex-direction:column;gap:12px;margin-top:6px}
.form-note{font-size:12.5px;color:var(--muted);text-align:center}
.form-msg{display:none;grid-column:1/-1;background:rgba(184,242,77,.24);border:1px solid rgba(184,242,77,.55);color:#3E4F13;border-radius:10px;padding:12px 16px;font-size:14px}
.form-msg.show{display:block}

/* 页脚 */
.site-footer{background:var(--ink-deep);color:#B7B1C6;padding-top:62px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:18px}
.footer-brand .mark{width:36px;height:36px;border-radius:11px;background:linear-gradient(140deg,#3B2F63,#241C3C);color:#fff;display:grid;place-items:center;font-weight:700;font-size:16px}
.footer-brand .name{color:#fff;font-weight:700;font-size:17px;line-height:1.25}
.footer-brand .name small{display:block;font-size:11px;font-weight:500;letter-spacing:1.4px;color:#8B85A0}
.footer-col h4{color:#fff;font-size:15.5px;margin-bottom:18px}
.footer-col a{display:block;font-size:14.5px;line-height:2.1;color:#B7B1C6}
.footer-col a:hover{color:var(--accent)}
.footer-desc{font-size:14.5px;line-height:1.9;color:#9C96AD;max-width:340px}
.footer-bottom{margin-top:50px;border-top:1px solid rgba(255,255,255,.10);padding-block:22px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#8B85A0}

/* 响应式 */
@media (max-width:1199px){
  :root{--section-gap:76px}
  .hl-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:991px){
  :root{--section-gap:64px}
  .nav-toggle{display:flex}
  .nav-shell{position:fixed;top:72px;left:0;right:0;display:block;background:var(--card);border-bottom:1px solid var(--line);box-shadow:var(--shadow-lg);padding:8px 0 16px;opacity:0;visibility:hidden;transform:translateY(-10px);transition:opacity .25s ease,transform .25s ease,visibility .25s}
  .nav-shell.open{opacity:1;visibility:visible;transform:translateY(0)}
  .main-nav{display:block}
  .main-nav a{height:auto;min-height:52px;padding:0 22px;font-size:16px}
  .main-nav a::after{display:none}
  .main-nav a.active{background:var(--bg-2)}
  .nav-shell .btn-nav{display:flex;width:calc(100% - 44px);margin:14px 22px 4px;height:48px}
  .hl-grid{grid-template-columns:repeat(2,1fr)}
  .entry-grid{grid-template-columns:1fr}
  .price-grid{grid-template-columns:1fr;gap:32px}
  .price-card.featured{transform:none}
  .price-card.featured:hover{transform:translateY(-3px)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .signup .wrap{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .footer-desc{max-width:none}
}
@media (max-width:767px){
  :root{--section-gap:52px}
  body{font-size:16px}
  .hero-inner{padding-block:68px 96px}
  .hero-sub{font-size:15.5px}
  .hero-actions .btn{flex:1 1 100%}
  .metrics{margin-top:-48px}
  .metrics-grid{grid-template-columns:1fr 1fr;padding:26px 22px;gap:20px}
  .metric + .metric{border-left:0;padding-left:0}
  .section-head{margin-bottom:30px}
  .section-note{max-width:none}
  .tl-item{grid-template-columns:1fr;gap:6px;padding-bottom:28px}
  .tl-time{text-align:left;font-size:17px}
  .tl-body{padding-left:20px}
  .hl-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .form-card{padding:24px 20px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:400px){
  .metrics-grid{grid-template-columns:1fr}
}

/* roulang page: article */
/* ============ 设计变量 ============ */
:root{
  --ink:#241C3C;
  --ink-deep:#171126;
  --ink-soft:#3B2F63;
  --accent:#FF6A2B;
  --lime:#B8F24D;
  --bg:#F7F5F1;
  --bg-2:#EFEBE4;
  --card:#FFFFFF;
  --line:#E3DED6;
  --text:#1E1B24;
  --muted:#6B6577;
  --danger:#C0392B;
  --radius-card:16px;
  --radius-kv:22px;
  --radius-btn:11px;
  --radius-input:10px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(36,28,60,.06);
  --shadow-2:0 8px 24px rgba(36,28,60,.06);
  --shadow-hover:0 14px 34px rgba(36,28,60,.13);
  --max:1200px;
  --read:760px;
  --sec:88px;
}
/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.35;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;height:auto;display:block}
a{color:var(--ink);text-decoration:none;transition:color .18s ease,border-color .18s ease}
a:hover{color:var(--accent)}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.wrap{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}
.read-bar{position:fixed;top:0;left:0;height:3px;width:0;z-index:90;background:linear-gradient(90deg,var(--accent),var(--lime));transition:width .12s linear}

/* ============ 页头 ============ */
.site-header{position:sticky;top:0;z-index:70;background:rgba(247,245,241,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:box-shadow .2s ease}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(36,28,60,.09)}
.nav-row{display:flex;align-items:center;gap:20px;min-height:72px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo .mark{width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--ink) 0%,var(--ink-soft) 100%);color:#fff;display:grid;place-items:center;font-size:19px;font-weight:700;flex:0 0 38px}
.logo .name{display:flex;flex-direction:column;font-size:17px;font-weight:700;color:var(--ink);line-height:1.2;max-width:220px}
.logo .name small{font-size:11.5px;font-weight:500;color:var(--muted);letter-spacing:.04em;margin-top:3px}
.nav-shell{margin-left:auto;display:flex;align-items:center;gap:26px}
.main-nav{display:flex;align-items:center;gap:4px}
.main-nav a{position:relative;display:block;padding:10px 13px;font-size:15px;color:#453E55;border-radius:10px}
.main-nav a:hover{color:var(--ink);background:rgba(36,28,60,.05)}
.main-nav a.active{color:var(--ink);font-weight:700}
.main-nav a.active::after{content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;border-radius:2px;background:var(--accent)}
.btn-nav{display:inline-flex;align-items:center;justify-content:center;height:42px;padding:0 20px;border-radius:var(--radius-btn);background:var(--ink);color:#fff;font-size:14.5px;font-weight:600;transition:.18s ease;white-space:nowrap}
.btn-nav:hover{background:var(--accent);color:#fff;transform:translateY(-1px)}
.nav-toggle{display:none;width:44px;height:44px;margin-left:auto;flex-direction:column;align-items:center;justify-content:center;gap:4px;background:#fff;border:1px solid var(--line);border-radius:12px;cursor:pointer}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .2s ease,opacity .2s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ============ 按钮 ============ */
.btn-main{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;border:1px solid var(--ink);border-radius:var(--radius-btn);background:var(--ink);color:#fff;font-size:15.5px;font-weight:600;cursor:pointer;transition:.18s ease}
.btn-main:hover{background:var(--accent);border-color:var(--accent);color:#fff;transform:translateY(-1px);box-shadow:0 12px 24px rgba(255,106,43,.26)}
.btn-line{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border:1px solid var(--line);border-radius:var(--radius-btn);background:#fff;color:var(--ink);font-size:15.5px;font-weight:600;cursor:pointer;transition:.18s ease}
.btn-line:hover{border-color:var(--ink);background:#F1EDE6;color:var(--ink);transform:translateY(-1px)}

/* ============ 文章首屏 ============ */
.article-hero{position:relative;padding:52px 0 62px;color:#fff;background:var(--ink-deep) url('/assets/images/backpic/back-2.webp') center/cover no-repeat;overflow:hidden}
.article-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(115deg,rgba(23,17,38,.94) 0%,rgba(36,28,60,.82) 52%,rgba(36,28,60,.66) 100%)}
.article-hero .wrap{position:relative;z-index:2}
.breadcrumb-line{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.7)}
.breadcrumb-line a{color:rgba(255,255,255,.86);border-bottom:1px solid transparent;padding-bottom:1px}
.breadcrumb-line a:hover{color:#fff;border-bottom-color:rgba(255,255,255,.55)}
.breadcrumb-line .sep{color:rgba(255,255,255,.42)}
.breadcrumb-line .current{max-width:52%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:rgba(255,255,255,.64)}
.article-hero h1{margin-top:18px;color:#fff;font-size:clamp(26px,3.5vw,40px);line-height:1.34;max-width:920px}
.article-meta{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:22px;font-size:13.5px;color:rgba(255,255,255,.76)}
.article-meta li{display:flex;align-items:center;gap:8px}
.article-meta li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);flex:0 0 6px}

/* ============ 正文阅读区 ============ */
.article-main{padding:56px 0 8px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 268px;gap:46px;align-items:start}
.article-panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);padding:42px 46px}
.article-body{max-width:var(--read);font-size:16.5px;line-height:1.95;color:var(--text);overflow-wrap:break-word}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 1.1em}
.article-body h2{position:relative;margin:72px 0 .7em;padding-left:16px;font-size:clamp(22px,2.4vw,27px);line-height:1.45}
.article-body h2::before{content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:5px;border-radius:3px;background:var(--accent)}
.article-body h3{margin:40px 0 .6em;font-size:20px;font-weight:600}
.article-body h4{margin:28px 0 .5em;font-size:17.5px;font-weight:600;color:#3A3348}
.article-body ul,.article-body ol{margin:0 0 1.1em;padding-left:1.35em;list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:.5em}
.article-body li::marker{color:var(--accent)}
.article-body img{border-radius:12px;margin:26px 0 10px}
.article-body figcaption{font-size:13.5px;color:var(--muted);text-align:center;margin-bottom:24px;line-height:1.7}
.article-body blockquote{margin:26px 0;padding:18px 22px;background:var(--bg-2);border-left:3px solid var(--accent);border-radius:0 12px 12px 0;color:#3A3348}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body strong{color:var(--ink);font-weight:700}
.article-body a{color:var(--ink);border-bottom:1px solid rgba(255,106,43,.55)}
.article-body a:hover{color:var(--accent);border-bottom-color:var(--accent)}
.article-body code{background:var(--bg-2);padding:2px 7px;border-radius:6px;font-size:.92em;color:#4A2A18}
.article-body pre{margin:24px 0;padding:18px 20px;background:var(--ink-deep);color:#EDE9F5;border-radius:14px;overflow-x:auto;font-size:14.5px;line-height:1.7}
.article-body pre code{background:none;color:inherit;padding:0}
.article-body table{width:100%;margin:24px 0;border-collapse:collapse;font-size:15px;display:block;overflow-x:auto}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 13px;text-align:left;vertical-align:top}
.article-body th{background:var(--bg-2);font-weight:600;color:var(--ink);white-space:nowrap}
.article-body hr{border:none;border-top:1px solid var(--line);margin:36px 0}

.empty-state{text-align:center;padding:40px 10px 24px}
.empty-state .empty-mark{width:56px;height:56px;margin:0 auto 18px;border-radius:18px;background:var(--bg-2);color:var(--ink);display:grid;place-items:center;font-size:24px;font-weight:700}
.empty-state h2{margin-bottom:10px;font-size:24px}
.empty-state p{color:var(--muted);font-size:15.5px;margin-bottom:24px}

.article-foot{margin-top:46px;padding-top:26px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between}
.tag-list{display:flex;flex-wrap:wrap;gap:10px}
.tag{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--radius-pill);background:var(--bg-2);color:#3A3348;font-size:13.5px;border:1px solid transparent;transition:.18s ease;white-space:nowrap}
a.tag:hover{background:#fff;border-color:var(--ink);color:var(--ink)}
.back-link{font-size:14px;color:var(--muted)}
.back-link:hover{color:var(--accent)}

/* ============ 侧栏 ============ */
.article-side{position:sticky;top:100px;display:flex;flex-direction:column;gap:20px}
.toc{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);padding:20px;box-shadow:var(--shadow-1)}
.toc-title{font-size:13.5px;font-weight:600;letter-spacing:.08em;color:var(--muted);padding-bottom:12px;border-bottom:1px solid var(--line)}
#tocList{margin-top:10px}
#tocList li{margin-bottom:2px}
#tocList a{display:block;padding:8px 10px;font-size:14px;line-height:1.55;color:#4A4458;border-left:2px solid transparent;border-radius:0 8px 8px 0}
#tocList a:hover{background:var(--bg-2);color:var(--ink);border-left-color:var(--accent)}
.side-cta{background:var(--ink);color:#fff;border-radius:var(--radius-card);padding:24px 22px;box-shadow:var(--shadow-2)}
.side-cta h3{color:#fff;font-size:18px}
.side-cta p{margin:8px 0 18px;font-size:14px;line-height:1.7;color:rgba(255,255,255,.74)}
.side-cta .btn-main{width:100%;background:var(--accent);border-color:var(--accent)}
.side-cta .btn-main:hover{background:#fff;border-color:#fff;color:var(--ink);box-shadow:none}

/* ============ 通用板块 ============ */
.section{padding:var(--sec) 0}
.section-alt{background:var(--bg-2)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px}
.section-head h2{font-size:clamp(22px,2.6vw,30px)}
.section-head .sub{margin-top:10px;font-size:15px;color:var(--muted)}
.more-link{font-size:14.5px;font-weight:600;color:var(--ink);border-bottom:1px solid rgba(36,28,60,.22);padding-bottom:2px;white-space:nowrap}
.more-link:hover{color:var(--accent);border-bottom-color:var(--accent)}

/* ============ 推荐卡片 ============ */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}
.post-card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.post-thumb{aspect-ratio:16/9;background:var(--bg-2);overflow:hidden}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.post-card:hover .post-thumb img{transform:scale(1.04)}
.post-body{display:flex;flex-direction:column;gap:10px;padding:20px 22px 22px;flex:1}
.post-body .tag{align-self:flex-start;height:26px;font-size:12.5px;background:#F1EDE6}
.post-body h3{font-size:18px;line-height:1.5;transition:color .18s ease}
.post-card:hover .post-body h3{color:var(--accent)}
.post-body p{font-size:14.5px;line-height:1.75;color:var(--muted)}
.post-link{margin-top:auto;font-size:14px;font-weight:600;color:var(--ink)}
.post-card:hover .post-link{color:var(--accent)}

/* ============ FAQ ============ */
.faq-list{max-width:880px;display:grid;gap:14px}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);overflow:hidden}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:58px;padding:18px 24px;font-size:17px;font-weight:600;color:var(--ink);cursor:pointer;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"";width:12px;height:12px;flex:0 0 12px;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);transform:rotate(45deg);transition:transform .2s ease;margin-right:4px}
.faq-item[open] summary::after{transform:rotate(-135deg)}
.faq-item summary:hover{color:var(--accent)}
.faq-answer{padding:18px 24px 22px;background:var(--bg-2);font-size:15.5px;line-height:1.85;color:#45404F}

/* ============ CTA / 表单 ============ */
.cta-band{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;padding:52px;border-radius:24px;overflow:hidden;color:#fff;background:var(--ink-deep) url('/assets/images/backpic/back-3.webp') center/cover no-repeat;box-shadow:var(--shadow-2)}
.cta-band::before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(23,17,38,.95) 0%,rgba(36,28,60,.84) 100%)}
.cta-copy,.form-card{position:relative;z-index:2}
.cta-copy h2{color:#fff;font-size:clamp(22px,2.8vw,32px)}
.cta-copy .lead{margin-top:16px;font-size:15.5px;line-height:1.85;color:rgba(255,255,255,.76)}
.cta-points{margin-top:24px;display:grid;gap:10px}
.cta-points li{display:flex;gap:10px;font-size:14.5px;line-height:1.7;color:rgba(255,255,255,.84)}
.cta-points li::before{content:"";width:8px;height:8px;flex:0 0 8px;margin-top:10px;border-radius:50%;background:var(--lime)}
.form-card{background:#fff;border-radius:18px;padding:28px 26px;color:var(--text);box-shadow:0 20px 46px rgba(0,0,0,.26)}
.form-card h3{font-size:20px}
.form-card .hint{margin-top:6px;font-size:13.5px;color:var(--muted)}
.field{margin-top:16px;display:flex;flex-direction:column;gap:6px}
.field label{font-size:13.5px;font-weight:600;color:#3A3348}
.field .req{color:var(--accent)}
.field input,.field select,.field textarea{width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:var(--radius-input);background:#FBFAF8;font-size:15px;transition:.18s ease}
.field textarea{height:98px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--ink);background:#fff;box-shadow:0 0 0 3px rgba(36,28,60,.1)}
.field .err{display:none;font-size:12.5px;color:var(--danger)}
.field.is-error input,.field.is-error select{border-color:var(--danger);background:#FDF1EF}
.field.is-error .err{display:block}
.form-submit{margin-top:22px;display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.form-submit .btn-main{flex:1;min-width:164px}
.form-note{font-size:12.5px;color:var(--muted);line-height:1.6}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-deep);color:rgba(255,255,255,.76);padding:64px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px}
.footer-brand .mark{width:38px;height:38px;border-radius:12px;background:var(--accent);color:#fff;display:grid;place-items:center;font-size:19px;font-weight:700;flex:0 0 38px}
.footer-brand .name{display:flex;flex-direction:column;font-size:17px;font-weight:700;color:#fff;line-height:1.2}
.footer-brand .name small{margin-top:3px;font-size:11.5px;font-weight:500;color:rgba(255,255,255,.55);letter-spacing:.04em}
.footer-desc{margin-top:18px;font-size:14px;line-height:1.9;color:rgba(255,255,255,.6);max-width:340px}
.footer-col h4{margin-bottom:16px;font-size:15px;font-weight:600;color:#fff}
.footer-col a{display:block;padding:6px 0;font-size:14px;color:rgba(255,255,255,.66)}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.48)}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr) 240px;gap:32px}
  .article-panel{padding:36px 34px}
  .cta-band{gap:36px;padding:44px}
}
@media (max-width:991.98px){
  .nav-toggle{display:flex}
  .nav-shell{position:fixed;left:0;right:0;top:72px;bottom:0;display:flex;flex-direction:column;align-items:stretch;gap:10px;padding:18px 22px 32px;background:var(--bg);border-top:1px solid var(--line);overflow-y:auto;opacity:0;transform:translateY(-10px);pointer-events:none;transition:opacity .22s ease,transform .22s ease}
  .nav-shell.is-open{opacity:1;transform:none;pointer-events:auto}
  .main-nav{flex-direction:column;align-items:stretch;gap:0}
  .main-nav a{display:flex;align-items:center;min-height:50px;padding:12px 14px;font-size:16px;border-bottom:1px solid var(--line);border-radius:0}
  .main-nav a.active{background:rgba(36,28,60,.06)}
  .main-nav a.active::after{display:none}
  .btn-nav{margin-top:auto;width:100%;height:48px;font-size:15.5px}
  .article-side{position:static;flex-direction:column}
  .toc{display:none}
  .article-layout{grid-template-columns:1fr;gap:28px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-band{grid-template-columns:1fr;padding:36px 28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:64px 0}
}
@media (max-width:767.98px){
  body{font-size:16px}
  .wrap{padding:0 18px}
  .article-hero{padding:34px 0 42px}
  .article-meta{font-size:12.5px;gap:8px 14px}
  .article-main{padding:36px 0 0}
  .article-panel{padding:24px 20px}
  .article-body{font-size:16px;line-height:1.9}
  .article-body h2{margin-top:52px}
  .breadcrumb-line .current{max-width:100%}
  .related-grid{grid-template-columns:1fr;gap:22px}
  .section{padding:48px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .faq-item summary{font-size:16px;padding:16px 18px}
  .faq-answer{padding:16px 18px 20px;font-size:15px}
  .form-card{padding:22px 18px}
  .cta-band{padding:28px 20px;border-radius:20px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
  .form-submit .btn-main{width:100%;flex:0 0 auto}
}
@media (max-width:520px){
  .logo .name{font-size:15.5px}
  .logo .name small{font-size:10.5px}
  .article-hero h1{font-size:24px}
  .article-panel{padding:20px 16px}
  .article-body h2{font-size:21px;padding-left:13px}
  .article-body h3{font-size:18.5px}
}

/* roulang page: category1 */
:root{
  --ink:#241C3C;
  --ink-deep:#171126;
  --orange:#FF6A2B;
  --lime:#B8F24D;
  --bg:#F7F5F1;
  --bg-2:#EFEBE4;
  --card:#FFFFFF;
  --line:#E3DED6;
  --text:#1E1B24;
  --muted:#6B6577;
  --radius-card:16px;
  --radius-btn:11px;
  --radius-input:10px;
  --radius-kv:22px;
  --shadow-1:0 1px 2px rgba(36,28,60,.06), 0 8px 24px rgba(36,28,60,.06);
  --shadow-2:0 2px 6px rgba(36,28,60,.10), 0 16px 36px rgba(36,28,60,.13);
  --wrap:1200px;
  --read:760px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.92;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  font-weight:400;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--ink);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--orange)}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink);line-height:1.35;letter-spacing:-.01em}
h1{font-size:clamp(26px,4.2vw,42px)}
h2{font-size:clamp(22px,3vw,31px)}
h3{font-size:clamp(18px,2vw,21px);font-weight:600}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:4px}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 20px}
.section{padding:80px 0}
.section-sm{padding:56px 0}
.section-alt{background:var(--bg-2)}

/* ---------- 顶部公告条 ---------- */
.topbar{
  background:var(--ink-deep);
  color:#EFEBE4;
  font-size:13.5px;
  letter-spacing:.01em;
}
.topbar .wrap{
  min-height:34px;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:14px;
  white-space:nowrap;
  overflow:hidden;
}
.topbar span{
  overflow:hidden;
  text-overflow:ellipsis;
}
.topbar a{
  color:var(--lime);
  font-weight:600;
  flex:0 0 auto;
}
.topbar a:hover{color:#fff}

/* ---------- 页头 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(247,245,241,.94);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:0 6px 22px rgba(36,28,60,.09)}
.nav-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:72px;
}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.logo .mark{
  width:38px;
  height:38px;
  border-radius:12px;
  background:var(--ink);
  color:#fff;
  display:grid;
  place-items:center;
  font-weight:700;
  font-size:18px;
  letter-spacing:.02em;
  flex:0 0 auto;
}
.logo .name{
  display:flex;
  flex-direction:column;
  max-width:220px;
  font-size:17px;
  font-weight:700;
  color:var(--ink);
  line-height:1.2;
}
.logo .name small{
  font-size:11.5px;
  font-weight:500;
  color:var(--muted);
  letter-spacing:.03em;
  margin-top:3px;
}
.nav-toggle{
  display:none;
  width:46px;
  height:46px;
  border:1px solid var(--line);
  border-radius:12px;
  background:var(--card);
  padding:0 12px;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  cursor:pointer;
}
.nav-toggle span{
  display:block;
  height:2px;
  background:var(--ink);
  border-radius:2px;
  transition:transform .25s ease,opacity .25s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-shell{
  display:flex;
  align-items:center;
  gap:18px;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:4px;
}
.main-nav a{
  position:relative;
  display:inline-block;
  padding:10px 14px;
  border-radius:10px;
  font-size:15px;
  color:var(--text);
  transition:background .2s ease,color .2s ease;
}
.main-nav a:hover{background:var(--bg-2);color:var(--ink)}
.main-nav a.active{font-weight:700;color:var(--ink)}
.main-nav a.active::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:3px;
  height:2px;
  border-radius:2px;
  background:var(--orange);
}
.btn-nav{
  display:inline-block;
  background:var(--ink);
  color:#fff;
  padding:11px 20px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  white-space:nowrap;
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-nav:hover{
  background:var(--orange);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:0 10px 22px rgba(255,106,43,.28);
}

/* ---------- 通用按钮 ---------- */
.btn-main,.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:12px 26px;
  border-radius:var(--radius-btn);
  font-size:16px;
  font-weight:600;
  cursor:pointer;
  border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-main{background:var(--ink);color:#fff}
.btn-main:hover{background:var(--orange);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(255,106,43,.3)}
.btn-ghost{background:var(--card);color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--ink);background:#F2EEE9;color:var(--ink);transform:translateY(-1px)}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-weight:600;
  color:var(--ink);
  border-bottom:1px solid rgba(36,28,60,.25);
  padding-bottom:2px;
  transition:color .2s ease,border-color .2s ease,gap .2s ease;
}
.btn-text:hover{color:var(--orange);border-color:var(--orange);gap:10px}

/* ---------- 标签 / 徽章 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:999px;
  font-size:13px;
  font-weight:600;
  background:var(--bg-2);
  color:var(--ink);
  letter-spacing:.01em;
}
.tag-orange{background:rgba(255,106,43,.12);color:#C74A12}
.tag-lime{background:rgba(184,242,77,.28);color:#4B6B0A}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--orange);
  text-transform:uppercase;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:22px;
  height:2px;
  background:var(--orange);
  border-radius:2px;
}

/* ---------- 内页 Hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  background:var(--ink-deep);
}
.page-hero-img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
}
.page-hero-mask{
  position:absolute;
  inset:0;
  background:linear-gradient(105deg,rgba(23,17,38,.92) 8%,rgba(36,28,60,.72) 52%,rgba(36,28,60,.45) 100%);
}
.page-hero-inner{
  position:relative;
  z-index:2;
  padding:52px 20px 68px;
  color:#fff;
  max-width:900px;
}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:rgba(255,255,255,.66);
  margin-bottom:26px;
}
.crumb a{color:rgba(255,255,255,.86)}
.crumb a:hover{color:var(--lime)}
.crumb .sep{color:rgba(255,255,255,.35)}
.page-hero h1{
  color:#fff;
  font-size:clamp(28px,4.6vw,44px);
  margin-bottom:18px;
}
.page-hero .lead{
  font-size:17.5px;
  line-height:1.85;
  color:rgba(255,255,255,.84);
  max-width:620px;
  margin-bottom:30px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-bottom:32px;
}
.hero-actions .btn-ghost{
  background:rgba(255,255,255,.10);
  border-color:rgba(255,255,255,.34);
  color:#fff;
}
.hero-actions .btn-ghost:hover{
  background:rgba(255,255,255,.2);
  border-color:#fff;
  color:#fff;
}
.hero-actions .btn-main{background:var(--orange)}
.hero-actions .btn-main:hover{background:#fff;color:var(--ink);box-shadow:0 12px 26px rgba(0,0,0,.24)}
.hero-badges{
  display:flex;
  flex-wrap:wrap;
  gap:10px 26px;
}
.hero-badges li{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:rgba(255,255,255,.8);
}
.hero-badges i{color:var(--lime);font-size:13px}

/* ---------- 数据条 ---------- */
.stat-strip{
  background:var(--card);
  border-bottom:1px solid var(--line);
  padding:34px 0;
}
.stat-item{
  height:100%;
  padding:16px 18px;
  border-left:2px solid var(--line);
}
.stat-item .num{
  display:block;
  font-size:clamp(26px,3.4vw,36px);
  font-weight:700;
  color:var(--ink);
  line-height:1.2;
  letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
}
.stat-item .num em{
  font-style:normal;
  font-size:.5em;
  font-weight:600;
  color:var(--orange);
  margin-left:4px;
}
.stat-item .label{
  display:block;
  margin-top:6px;
  font-size:13.5px;
  color:var(--muted);
  line-height:1.6;
}

/* ---------- 图文交替区块 ---------- */
.feature-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
}
.feature-row + .feature-row{margin-top:88px}
.feature-row.reverse .feature-media{order:2}
.feature-media{
  position:relative;
  border-radius:var(--radius-kv);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  background:var(--bg-2);
}
.feature-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  transition:transform .5s ease;
}
.feature-media:hover img{transform:scale(1.03)}
.feature-media .media-tag{
  position:absolute;
  left:16px;
  bottom:16px;
  background:rgba(23,17,38,.86);
  color:#fff;
  font-size:13px;
  font-weight:600;
  padding:7px 14px;
  border-radius:999px;
  backdrop-filter:blur(4px);
}
.feature-body h2{margin-bottom:16px}
.feature-body p{color:#3A3446}
.point-list{margin-top:22px;display:grid;gap:14px}
.point-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  font-size:16px;
  color:#332D40;
}
.point-list li i{
  flex:0 0 auto;
  width:24px;
  height:24px;
  border-radius:8px;
  background:rgba(184,242,77,.35);
  color:#41591A;
  display:grid;
  place-items:center;
  font-size:12px;
  margin-top:5px;
}
.point-list li strong{color:var(--ink);font-weight:700}

/* ---------- 流程 ---------- */
.flow-grid{
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:20px;
  margin-top:44px;
}
.flow-step{
  position:relative;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 20px 24px;
  box-shadow:var(--shadow-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.flow-step:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#D3CCBF}
.flow-step .step-num{
  display:inline-grid;
  place-items:center;
  width:36px;
  height:36px;
  border-radius:11px;
  background:var(--ink);
  color:#fff;
  font-weight:700;
  font-size:15px;
  margin-bottom:16px;
  font-variant-numeric:tabular-nums;
}
.flow-step:nth-child(2) .step-num{background:var(--orange)}
.flow-step:nth-child(4) .step-num{background:var(--orange)}
.flow-step h3{font-size:17.5px;margin-bottom:8px}
.flow-step p{font-size:14.5px;color:var(--muted);line-height:1.8;margin:0}

/* ---------- 报名方式对比 ---------- */
.plan-grid{
  display:grid;
  grid-template-columns:1fr 1.08fr 1fr;
  gap:24px;
  align-items:end;
  margin-top:44px;
}
.plan-card{
  position:relative;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:18px;
  padding:30px 26px;
  box-shadow:var(--shadow-1);
  transition:transform .25s ease,box-shadow .25s ease;
}
.plan-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.plan-card .plan-name{font-size:19px;font-weight:700;color:var(--ink);margin-bottom:8px}
.plan-card .plan-sub{font-size:14px;color:var(--muted);margin-bottom:20px}
.plan-card .plan-price{
  font-size:30px;
  font-weight:700;
  color:var(--ink);
  letter-spacing:-.02em;
  margin-bottom:22px;
}
.plan-card .plan-price small{font-size:13.5px;font-weight:500;color:var(--muted);margin-left:6px}
.plan-list{display:grid;gap:11px;margin-bottom:26px}
.plan-list li{
  display:flex;
  gap:9px;
  align-items:flex-start;
  font-size:14.8px;
  color:#3A3446;
  line-height:1.7;
}
.plan-list li i{color:var(--orange);font-size:13px;margin-top:7px;flex:0 0 auto}
.plan-card .btn-main,.plan-card .btn-ghost{width:100%}
.plan-card.is-featured{
  background:var(--ink);
  border:2px solid var(--orange);
  padding-top:44px;
  padding-bottom:40px;
  margin-bottom:8px;
  box-shadow:0 22px 48px rgba(36,28,60,.22);
}
.plan-card.is-featured .plan-name,
.plan-card.is-featured .plan-price{color:#fff}
.plan-card.is-featured .plan-sub,
.plan-card.is-featured .plan-price small{color:rgba(255,255,255,.66)}
.plan-card.is-featured .plan-list li{color:rgba(255,255,255,.86)}
.plan-card.is-featured .plan-list li i{color:var(--lime)}
.plan-card.is-featured .btn-main{background:var(--orange)}
.plan-card.is-featured .btn-main:hover{background:#fff;color:var(--ink)}
.plan-badge{
  position:absolute;
  top:-14px;
  left:50%;
  transform:translateX(-50%);
  background:var(--lime);
  color:#31450A;
  font-size:13px;
  font-weight:700;
  padding:6px 16px;
  border-radius:999px;
  white-space:nowrap;
}
.plan-card.is-minimal{background:transparent;box-shadow:none}
.plan-card.is-minimal:hover{background:var(--card);box-shadow:var(--shadow-1)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:840px;margin:0 auto}
.faq-item{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:14px;
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:#D3CCBF}
.faq-item[open]{box-shadow:var(--shadow-1);border-color:#D3CCBF}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:19px 56px 19px 22px;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  position:relative;
  line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";
  position:absolute;
  right:20px;
  top:50%;
  transform:translateY(-50%);
  font-size:22px;
  font-weight:400;
  color:var(--orange);
  line-height:1;
  transition:transform .25s ease;
}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.faq-body{
  padding:16px 22px 22px;
  background:var(--bg);
  border-top:1px solid var(--line);
  font-size:15.6px;
  line-height:1.95;
  color:#3A3446;
}

/* ---------- 报名表单 CTA ---------- */
.cta-panel{
  background:var(--ink);
  border-radius:24px;
  padding:52px 48px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:52px;
  color:#fff;
  box-shadow:0 24px 60px rgba(36,28,60,.22);
}
.cta-panel h2{color:#fff;margin-bottom:16px}
.cta-panel p{color:rgba(255,255,255,.76);font-size:16px}
.cta-points{display:grid;gap:12px;margin-top:26px}
.cta-points li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:15px;
  color:rgba(255,255,255,.82);
}
.cta-points li i{color:var(--lime);margin-top:8px;font-size:12px;flex:0 0 auto}
.signup-form{
  background:#fff;
  border-radius:18px;
  padding:28px 26px;
  color:var(--text);
  box-shadow:0 12px 30px rgba(0,0,0,.16);
}
.form-field{margin-bottom:16px}
.form-field label{
  display:block;
  font-size:13.5px;
  font-weight:600;
  color:var(--ink);
  margin-bottom:7px;
}
.form-field label .req{color:var(--orange);margin-left:3px}
.form-field input,
.form-field select,
.form-field textarea{
  width:100%;
  min-height:47px;
  padding:11px 13px;
  border:1px solid var(--line);
  border-radius:var(--radius-input);
  background:#FCFBF9;
  font-size:15.5px;
  line-height:1.5;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.form-field textarea{min-height:88px;resize:vertical}
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus{
  outline:none;
  border-color:var(--ink);
  background:#fff;
  box-shadow:0 0 0 3px rgba(36,28,60,.09);
}
.form-field .hint{display:block;font-size:12.5px;color:var(--muted);margin-top:6px}
.signup-form .btn-main{width:100%;margin-top:6px}
.form-note{font-size:12.5px;color:var(--muted);margin-top:12px;line-height:1.7}
.form-alert{
  display:none;
  margin-top:14px;
  padding:12px 14px;
  border-radius:10px;
  background:rgba(184,242,77,.28);
  color:#3E570F;
  font-size:14px;
  font-weight:600;
}
.form-alert.show{display:block}

/* ---------- 交叉入口 ---------- */
.cross-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
  margin-top:40px;
}
.cross-card{
  display:flex;
  gap:20px;
  align-items:center;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:20px;
  box-shadow:var(--shadow-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.cross-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#D3CCBF}
.cross-card img{
  width:112px;
  height:88px;
  object-fit:cover;
  border-radius:12px;
  flex:0 0 auto;
}
.cross-card .cross-body h3{font-size:17.5px;margin-bottom:6px}
.cross-card:hover .cross-body h3{color:var(--orange)}
.cross-card .cross-body p{font-size:14px;color:var(--muted);margin:0;line-height:1.75}
.cross-card .cross-body .more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13.5px;
  font-weight:600;
  color:var(--ink);
  margin-top:10px;
}
.cross-card:hover .cross-body .more{gap:10px;color:var(--orange)}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink-deep);
  color:rgba(255,255,255,.7);
  padding:64px 0 26px;
  margin-top:8px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:18px;
}
.footer-brand .mark{
  width:36px;
  height:36px;
  border-radius:11px;
  background:var(--orange);
  color:#fff;
  display:grid;
  place-items:center;
  font-weight:700;
  font-size:17px;
}
.footer-brand .name{
  display:flex;
  flex-direction:column;
  font-size:16.5px;
  font-weight:700;
  color:#fff;
  line-height:1.2;
}
.footer-brand .name small{
  font-size:11.5px;
  font-weight:500;
  color:rgba(255,255,255,.55);
  margin-top:3px;
}
.footer-desc{
  font-size:14.5px;
  line-height:1.9;
  color:rgba(255,255,255,.62);
  max-width:400px;
  margin:0;
}
.footer-col h4{
  color:#fff;
  font-size:15px;
  font-weight:700;
  margin-bottom:16px;
  letter-spacing:.02em;
}
.footer-col a{
  display:block;
  font-size:14.5px;
  color:rgba(255,255,255,.66);
  padding:6px 0;
}
.footer-col a:hover{color:var(--orange)}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  padding-top:22px;
  font-size:13px;
  color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .feature-row{gap:40px}
  .cta-panel{padding:44px 36px;gap:40px}
}
@media (max-width:991px){
  .nav-toggle{display:flex}
  .nav-shell{
    position:fixed;
    left:0;
    right:0;
    top:72px;
    bottom:0;
    background:var(--bg);
    padding:10px 20px 26px;
    flex-direction:column;
    align-items:stretch;
    gap:12px;
    transform:translateY(-14px);
    opacity:0;
    visibility:hidden;
    overflow-y:auto;
    transition:opacity .25s ease,transform .25s ease,visibility .25s;
    box-shadow:0 20px 40px rgba(36,28,60,.14);
  }
  .nav-shell.open{opacity:1;visibility:visible;transform:none}
  .main-nav{flex-direction:column;align-items:stretch;gap:0}
  .main-nav a{
    display:flex;
    align-items:center;
    min-height:52px;
    padding:12px 4px;
    font-size:16px;
    border-bottom:1px solid var(--line);
    border-radius:0;
  }
  .main-nav a:hover{background:transparent;color:var(--orange)}
  .main-nav a.active::after{display:none}
  .main-nav a.active{color:var(--orange)}
  .btn-nav{width:100%;text-align:center;padding:15px;margin-top:auto;min-height:52px}
  .section{padding:60px 0}
  .feature-row{grid-template-columns:1fr;gap:26px}
  .feature-row.reverse .feature-media{order:0}
  .feature-row + .feature-row{margin-top:60px}
  .flow-grid{grid-template-columns:repeat(2,1fr)}
  .plan-grid{grid-template-columns:1fr;align-items:stretch;gap:20px}
  .plan-card.is-featured{margin-bottom:0;padding-top:38px}
  .cta-panel{grid-template-columns:1fr;padding:38px 26px;gap:32px}
  .cross-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-desc{max-width:none}
  .page-hero-inner{padding:40px 20px 54px}
}
@media (max-width:575px){
  body{font-size:16px;line-height:1.86}
  .wrap{padding:0 16px}
  .nav-row{min-height:66px}
  .nav-shell{top:66px}
  .logo .name{font-size:15.5px;max-width:170px}
  .logo .name small{font-size:10.5px}
  .topbar .wrap{font-size:12.5px;gap:8px}
  .section{padding:44px 0}
  .section-sm{padding:38px 0}
  .page-hero-inner{padding:32px 16px 46px}
  .page-hero .lead{font-size:16px}
  .hero-actions{gap:10px}
  .hero-actions .btn-main,
  .hero-actions .btn-ghost{flex:1 1 100%;width:100%}
  .hero-badges{flex-direction:column;gap:8px}
  .stat-item{padding:12px 14px}
  .flow-grid{grid-template-columns:1fr;gap:14px}
  .feature-media img{aspect-ratio:16/10}
  .cta-panel{padding:30px 18px;border-radius:18px}
  .signup-form{padding:22px 18px}
  .cross-card{flex-direction:column;align-items:flex-start;gap:14px}
  .cross-card img{width:100%;height:140px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column}
  .faq-item summary{font-size:16px;padding:16px 48px 16px 18px}
}

/* roulang page: category2 */
:root{
  --ink:#241C3C;
  --ink-deep:#171126;
  --orange:#FF6A2B;
  --lime:#B8F24D;
  --bg:#F7F5F1;
  --bg-2:#EFEBE4;
  --card:#FFFFFF;
  --line:#E3DED6;
  --text:#1E1B24;
  --muted:#6B6577;
  --soft:#3A3448;
  --radius:16px;
  --radius-btn:11px;
  --radius-kv:22px;
  --shadow-1:0 1px 2px rgba(36,28,60,.06),0 8px 24px rgba(36,28,60,.06);
  --shadow-2:0 2px 8px rgba(36,28,60,.10),0 18px 38px rgba(36,28,60,.14);
  --gap-section:78px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16.5px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--ink);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease,transform .2s ease}
a:hover{color:var(--orange)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--ink-deep);letter-spacing:-.01em}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:6px}
section[id],div[id]{scroll-margin-top:92px}

/* ---------- container ---------- */
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 22px}
.narrow{max-width:760px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,245,241,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:0 8px 22px rgba(36,28,60,.09)}
.nav-row{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:72px}
.logo{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.logo .mark{
  width:40px;height:40px;border-radius:12px;background:var(--ink);color:#fff;
  display:grid;place-items:center;font-weight:700;font-size:18px;letter-spacing:0;
}
.logo .name{display:flex;flex-direction:column;line-height:1.15;font-weight:700;font-size:17px;color:var(--ink-deep);max-width:220px}
.logo .name small{font-weight:500;font-size:11.5px;color:var(--muted);letter-spacing:.02em;margin-top:3px}
.nav-shell{display:flex;align-items:center;gap:20px}
.main-nav{display:flex;align-items:center;gap:4px}
.main-nav a{
  display:block;padding:11px 14px;font-size:15.5px;color:var(--soft);border-radius:10px;position:relative;min-height:44px;line-height:22px;
}
.main-nav a:hover{background:var(--bg-2);color:var(--ink-deep)}
.main-nav a.active{color:var(--ink-deep);font-weight:700}
.main-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;background:var(--ink);border-radius:2px;
}
.btn-nav{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--ink);color:#fff;border:1px solid var(--ink);
  padding:12px 22px;border-radius:var(--radius-btn);font-weight:600;font-size:15px;min-height:46px;white-space:nowrap;
}
.btn-nav:hover{background:var(--orange);border-color:var(--orange);color:#fff;transform:translateY(-1px)}
.nav-toggle{
  display:none;width:46px;height:46px;border:1px solid var(--line);border-radius:12px;background:#fff;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;cursor:pointer;padding:0;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;transition:transform .22s ease,opacity .22s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- breadcrumb ---------- */
.crumb-bar{padding:16px 0 4px;font-size:13.5px;color:var(--muted)}
.crumb-bar ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb-bar li{display:flex;align-items:center;gap:8px}
.crumb-bar li+li::before{content:"/";color:#BEB7AE}
.crumb-bar a{color:var(--muted)}
.crumb-bar a:hover{color:var(--orange)}
.crumb-bar .now{color:var(--ink-deep);font-weight:600}

/* ---------- hero ---------- */
.hero{
  position:relative;margin-top:14px;
  background:var(--ink-deep) url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-radius:var(--radius-kv);
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(23,17,38,.90) 0%,rgba(36,28,60,.80) 52%,rgba(36,28,60,.62) 100%);
}
.hero-inner{position:relative;z-index:2;padding:76px 0 84px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.20);
  color:rgba(255,255,255,.92);padding:8px 15px;border-radius:999px;font-size:13px;letter-spacing:.03em;
}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--lime)}
.hero h1{
  color:#fff;font-size:44px;line-height:1.24;font-weight:700;
  margin:20px 0 16px;max-width:640px;
}
.hero-sub{color:rgba(255,255,255,.84);font-size:17px;line-height:1.9;max-width:600px;margin:0}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.btn-main,.btn-ghost,.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  min-height:48px;padding:14px 26px;border-radius:var(--radius-btn);
  font-weight:600;font-size:15.5px;cursor:pointer;border:1px solid transparent;
}
.btn-main{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn-main:hover{background:var(--orange);border-color:var(--orange);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.38);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.16);border-color:#fff;color:#fff;transform:translateY(-1px)}
.btn-line{background:#fff;border-color:var(--line);color:var(--ink-deep)}
.btn-line:hover{border-color:var(--ink);background:#F2EEF9;color:var(--ink-deep);transform:translateY(-1px)}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.badge-soft{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  color:rgba(255,255,255,.90);padding:8px 15px;border-radius:999px;font-size:13px;
}
.kv-panel{
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);
  border-radius:20px;padding:24px 24px 12px;
}
.kv-panel h3{color:#fff;font-size:17px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.kv-panel h3 i{color:var(--lime);font-size:14px}
.kv-row{display:flex;justify-content:space-between;gap:14px;padding:12px 0;border-bottom:1px dashed rgba(255,255,255,.15);font-size:14.5px}
.kv-row:last-child{border-bottom:0}
.kv-row .k{color:rgba(255,255,255,.62)}
.kv-row .v{color:#fff;font-weight:600;text-align:right}

/* ---------- stats band ---------- */
.stats-band{position:relative;z-index:5;margin-top:-46px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px;box-shadow:var(--shadow-1)}
.stat b{display:block;font-size:34px;line-height:1.2;font-weight:700;color:var(--ink);letter-spacing:-.02em}
.stat span{display:block;margin-top:6px;font-size:13.5px;color:var(--muted);line-height:1.6}

/* ---------- sections ---------- */
.section{padding:var(--gap-section) 0}
.section.alt{background:var(--bg-2)}
.section-head{max-width:760px;margin-bottom:38px}
.kicker{
  display:inline-block;font-size:13px;font-weight:700;color:var(--orange);letter-spacing:.06em;margin-bottom:10px;
}
.section-head h2{font-size:30px;line-height:1.4;font-weight:700}
.section-head .lead{margin-top:14px;color:var(--muted);font-size:16px;line-height:1.9}
.section-head.center{max-width:760px;margin-left:auto;margin-right:auto;text-align:center}

/* ---------- module cards ---------- */
.mod-card{
  display:flex;flex-direction:column;height:100%;background:var(--card);
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.mod-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#D6CFC4}
.mod-card .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--bg-2)}
.mod-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.mod-card:hover .thumb img{transform:scale(1.05)}
.mod-card .body{display:flex;flex-direction:column;gap:12px;padding:20px 20px 22px;flex:1}
.mod-card h3{font-size:19px;line-height:1.5;font-weight:600}
.mod-card p{font-size:15.5px;color:var(--muted);line-height:1.85;margin:0}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  font-size:12.5px;padding:5px 11px;border-radius:999px;background:var(--bg-2);
  color:#4A4459;border:1px solid var(--line);white-space:nowrap;
}
.tag.accent{background:rgba(255,106,43,.10);color:#B8431A;border-color:rgba(255,106,43,.26)}
.card-link{
  margin-top:auto;display:inline-flex;align-items:center;gap:7px;
  font-size:14.5px;font-weight:600;color:var(--ink);
}
.card-link i{font-size:12.5px;transition:transform .22s ease}
.mod-card:hover .card-link{color:var(--orange)}
.mod-card:hover .card-link i{transform:translateX(4px)}

/* ---------- scene cards ---------- */
.scene{
  height:100%;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:24px 22px;transition:transform .24s ease,box-shadow .24s ease;
}
.scene:hover{transform:translateY(-3px);box-shadow:var(--shadow-1)}
.scene .ico{
  width:46px;height:46px;border-radius:13px;background:var(--bg-2);color:var(--ink);
  display:grid;place-items:center;font-size:18px;margin-bottom:16px;
}
.scene h3{font-size:18px;font-weight:600;margin-bottom:10px}
.scene p{font-size:15.5px;color:var(--muted);line-height:1.85;margin:0}

/* ---------- flow ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.flow-item{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px;position:relative}
.flow-item .num{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:var(--ink);color:#fff;font-weight:700;font-size:16px;margin-bottom:16px;
}
.flow-item:nth-child(2) .num{background:#3A2E5C}
.flow-item:nth-child(3) .num{background:#4C3C72}
.flow-item:nth-child(4) .num{background:var(--orange)}
.flow-item h3{font-size:18px;font-weight:600;margin-bottom:10px}
.flow-item p{font-size:15.5px;color:var(--muted);line-height:1.85;margin:0}

/* ---------- tips ---------- */
.tips-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:26px;align-items:start}
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px 26px;box-shadow:var(--shadow-1)}
.panel h3{font-size:20px;font-weight:600;margin-bottom:18px;display:flex;align-items:center;gap:10px}
.panel h3 i{color:var(--orange);font-size:17px}
.check-list li,.warn-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:13px 0;border-bottom:1px dashed var(--line);font-size:15.8px;line-height:1.8;color:var(--soft);
}
.check-list li:last-child,.warn-list li:last-child{border-bottom:0}
.check-list i{color:#2E7D4F;font-size:15px;margin-top:6px}
.warn-list i{color:#D64545;font-size:15px;margin-top:6px}
.panel.dark{background:var(--ink-deep);border-color:rgba(255,255,255,.10);color:rgba(255,255,255,.78)}
.panel.dark h3{color:#fff}
.panel.dark h3 i{color:var(--lime)}
.panel.dark .check-list li{color:rgba(255,255,255,.80);border-bottom-color:rgba(255,255,255,.14)}
.panel.dark .check-list i{color:var(--lime)}
.panel-note{margin-top:16px;font-size:14px;color:var(--muted);line-height:1.8}

/* ---------- entry cards ---------- */
.entry{
  display:flex;flex-direction:column;gap:12px;height:100%;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.entry:hover{transform:translateY(-3px);box-shadow:var(--shadow-1);border-color:#D6CFC4}
.entry .ico{width:44px;height:44px;border-radius:12px;background:rgba(36,28,60,.07);color:var(--ink);display:grid;place-items:center;font-size:17px}
.entry h3{font-size:18.5px;font-weight:600}
.entry p{font-size:15.5px;color:var(--muted);line-height:1.85;margin:0}
.entry .go{margin-top:auto;display:inline-flex;align-items:center;gap:7px;font-weight:600;font-size:14.5px;color:var(--ink)}
.entry .go i{font-size:12.5px;transition:transform .22s ease}
.entry:hover .go{color:var(--orange)}
.entry:hover .go i{transform:translateX(4px)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto}
.accordion-item{
  background:var(--card);border:1px solid var(--line)!important;border-radius:14px!important;
  overflow:hidden;margin-bottom:12px;
}
.accordion-button{
  font-size:17px;font-weight:600;color:var(--ink-deep);background:var(--card);
  padding:18px 22px;line-height:1.7;box-shadow:none!important;
}
.accordion-button:not(.collapsed){background:var(--bg-2);color:var(--ink-deep)}
.accordion-button::after{transform:scale(.85)}
.accordion-button:focus{box-shadow:0 0 0 3px rgba(255,106,43,.22)!important;border-color:var(--orange)!important}
.accordion-body{padding:2px 22px 22px;background:var(--bg-2);font-size:15.8px;line-height:1.95;color:var(--soft)}

/* ---------- signup ---------- */
.signup{
  background:var(--ink-deep);border-radius:var(--radius-kv);padding:52px 0;
  position:relative;overflow:hidden;
}
.signup::before{
  content:"";position:absolute;right:-120px;top:-80px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,106,43,.30) 0%,rgba(255,106,43,0) 70%);
}
.signup-inner{position:relative;z-index:2}
.signup h2{color:#fff;font-size:30px;line-height:1.42;font-weight:700;margin-bottom:16px}
.signup p.side{color:rgba(255,255,255,.76);font-size:16px;line-height:1.9}
.signup ul.side-list{margin-top:22px;display:grid;gap:12px}
.signup ul.side-list li{display:flex;gap:10px;align-items:flex-start;color:rgba(255,255,255,.82);font-size:15.5px;line-height:1.75}
.signup ul.side-list i{color:var(--lime);font-size:14px;margin-top:5px}
.form-card{background:#fff;border-radius:20px;padding:30px 28px;box-shadow:var(--shadow-2)}
.form-card h3{font-size:20px;font-weight:600;margin-bottom:6px}
.form-card .hint{font-size:14px;color:var(--muted);margin-bottom:20px}
.form-label{font-size:14px;font-weight:600;color:var(--soft);margin-bottom:7px}
.form-label .req{color:var(--orange);margin-left:3px}
.form-control,.form-select{
  height:48px;border-radius:10px;border:1px solid var(--line);background:#FCFBF9;
  font-size:15.5px;color:var(--text);padding:10px 14px;box-shadow:none;
}
.form-control:focus,.form-select:focus{border-color:var(--ink);box-shadow:0 0 0 3px rgba(36,28,60,.10);background:#fff}
textarea.form-control{height:auto;min-height:112px;resize:vertical;line-height:1.8}
.form-control.is-invalid,.form-select.is-invalid{border-color:#D64545;background:#FFF7F7}
.err-text{display:none;color:#D64545;font-size:13px;margin-top:6px}
.err-text.show{display:block}
.btn-submit{
  width:100%;height:52px;border-radius:12px;border:1px solid var(--ink);background:var(--ink);color:#fff;
  font-weight:700;font-size:16px;cursor:pointer;transition:background-color .2s ease,transform .2s ease;
}
.btn-submit:hover{background:var(--orange);border-color:var(--orange);transform:translateY(-1px)}
.form-tip{margin-top:14px;font-size:13px;color:var(--muted);line-height:1.75}
.form-ok{
  display:none;margin-top:16px;padding:13px 16px;border-radius:12px;
  background:rgba(184,242,77,.18);border:1px solid rgba(184,242,77,.55);color:#2C3A0C;font-size:14.5px;
}
.form-ok.show{display:block}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-deep);color:rgba(255,255,255,.74);padding:64px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:34px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-brand .mark{
  width:40px;height:40px;border-radius:12px;background:var(--orange);color:var(--ink-deep);
  display:grid;place-items:center;font-weight:700;font-size:18px;
}
.footer-brand .name{display:flex;flex-direction:column;line-height:1.15;color:#fff;font-weight:700;font-size:17px;max-width:220px}
.footer-brand .name small{font-weight:500;font-size:11.5px;color:rgba(255,255,255,.55);margin-top:3px}
.footer-desc{font-size:14.5px;line-height:1.9;color:rgba(255,255,255,.68);max-width:430px;margin:0}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px}
.footer-col a{display:block;color:rgba(255,255,255,.72);font-size:14.5px;padding:6px 0;min-height:34px;line-height:22px}
.footer-col a:hover{color:var(--orange)}
.footer-bottom{
  margin-top:46px;padding-top:18px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:rgba(255,255,255,.55);line-height:1.7;
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .hero h1{font-size:38px}
  .section-head h2{font-size:27px}
  .signup h2{font-size:27px}
}
@media (max-width:991px){
  :root{--gap-section:62px}
  .nav-toggle{display:flex}
  .nav-shell{
    position:absolute;left:0;right:0;top:100%;
    display:none;flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:0 18px 34px rgba(36,28,60,.14);
    padding:12px 22px 22px;
  }
  .nav-shell.open{display:flex}
  .main-nav{flex-direction:column;align-items:stretch;gap:2px;width:100%}
  .main-nav a{padding:14px 12px;min-height:48px;font-size:16px;border-radius:10px}
  .main-nav a.active::after{left:12px;right:auto;width:28px;bottom:8px}
  .btn-nav{margin-top:14px;width:100%;min-height:50px}
  .hero-inner{padding:60px 0 72px}
  .hero h1{font-size:34px;max-width:none}
  .hero-sub{max-width:none}
  .kv-panel{margin-top:30px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stats-band{margin-top:-34px}
  .flow{grid-template-columns:repeat(2,1fr)}
  .tips-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:28px}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.88}
  :root{--gap-section:52px}
  .wrap{padding:0 18px}
  .hero{border-radius:18px;margin-top:12px}
  .hero h1{font-size:29px}
  .hero-sub{font-size:16px}
  .hero-actions{gap:12px}
  .btn-main,.btn-ghost,.btn-line{width:100%}
  .section-head h2{font-size:23px}
  .signup{padding:38px 0;border-radius:18px}
  .signup h2{font-size:23px}
  .form-card{padding:24px 20px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column}
  .stat b{font-size:28px}
  .panel{padding:22px 20px}
}
@media (max-width:520px){
  .wrap{padding:0 15px}
  .hero-inner{padding:48px 0 60px}
  .hero h1{font-size:26px}
  .logo .name{font-size:15.5px}
  .logo .name small{font-size:11px}
  .stats{grid-template-columns:1fr}
  .stats-band{margin-top:-26px}
  .flow{grid-template-columns:1fr}
  .accordion-button{font-size:16px;padding:16px 16px}
  .accordion-body{padding:0 16px 18px}
}

/* roulang page: category3 */
:root{
  --ink:#241C3C;
  --ink-deep:#171126;
  --orange:#FF6A2B;
  --lime:#B8F24D;
  --bg:#F7F5F1;
  --bg-2:#EFEBE4;
  --card:#FFFFFF;
  --line:#E3DED6;
  --text:#1E1B24;
  --muted:#6B6577;
  --r-card:16px;
  --r-btn:11px;
  --r-input:10px;
  --r-kv:22px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(36,28,60,.06),0 8px 24px rgba(36,28,60,.06);
  --sh-2:0 2px 6px rgba(36,28,60,.09),0 16px 34px rgba(36,28,60,.11);
  --wrap:1200px;
  --read:760px;
  --sp:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16.5px;
  line-height:1.92;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:12px}
a{color:var(--ink);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--orange)}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.32;letter-spacing:-.01em}
p{margin:0 0 1.1em}
ul,ol{margin:0 0 1.1em;padding-left:1.15em}
li{margin-bottom:.45em}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:4px}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 20px}
.section{padding:76px 0}
.section.tight{padding:56px 0}
.section-head{max-width:720px;margin-bottom:34px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--orange);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--orange);border-radius:2px}
h1{font-size:40px}
h2{font-size:29px;margin-top:0}
h3{font-size:19.5px;font-weight:600}
.lead{font-size:17.5px;color:var(--muted);line-height:1.85}
.muted{color:var(--muted)}
small{font-size:13.5px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(247,245,241,.94);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-1);background:rgba(255,255,255,.96)}
.nav-row{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:72px}
.logo{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.logo .mark{
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(150deg,var(--ink) 0%,var(--ink-deep) 100%);
  color:#fff;font-weight:700;font-size:18px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 14px rgba(36,28,60,.28);
}
.logo .name{
  display:flex;flex-direction:column;
  font-size:17px;font-weight:700;color:var(--ink);
  line-height:1.15;max-width:220px;
}
.logo .name small{font-size:11px;font-weight:500;color:var(--muted);letter-spacing:.03em;margin-top:3px}
.nav-shell{display:flex;align-items:center;gap:24px}
.main-nav{display:flex;align-items:center;gap:4px;list-style:none;margin:0;padding:0}
.main-nav li{margin:0}
.main-nav a{
  position:relative;display:inline-block;
  padding:10px 14px;border-radius:9px;
  font-size:15.5px;color:var(--text);
}
.main-nav a:hover{background:var(--bg-2);color:var(--ink)}
.main-nav a.active{font-weight:700;color:var(--ink)}
.main-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;
  height:2px;background:var(--ink);border-radius:2px;
}
.btn-nav{
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--ink);color:#fff;
  padding:11px 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  box-shadow:0 6px 16px rgba(36,28,60,.2);
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-nav:hover{background:var(--orange);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(255,106,43,.28)}
.nav-toggle{
  display:none;width:46px;height:46px;border:1px solid var(--line);
  background:#fff;border-radius:12px;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
  cursor:pointer;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;transition:.25s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 通用按钮 ---------- */
.btn-main,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-btn);
  font-size:15.5px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:all .22s ease;
}
.btn-main{background:var(--ink);color:#fff;box-shadow:0 8px 20px rgba(36,28,60,.24)}
.btn-main:hover{background:var(--orange);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,106,43,.3)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--ink);background:#F3F0FA;color:var(--ink);transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{background:var(--lime);color:var(--ink-deep);transform:translateY(-2px)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px}
.link-arrow i{transition:transform .2s ease}
.link-arrow:hover i{transform:translateX(4px)}
.on-dark .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.35)}
.on-dark .btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:var(--bg);border-bottom:1px solid var(--line)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);padding:14px 0}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--ink)}
.crumb .sep{opacity:.5}
.crumb .now{color:var(--ink);font-weight:600}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;color:#fff;overflow:hidden;
  background:linear-gradient(180deg,rgba(23,17,38,.58) 0%,rgba(36,28,60,.5) 100%),
             url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.page-hero::after{
  content:"";position:absolute;right:-120px;bottom:-140px;width:380px;height:380px;
  background:radial-gradient(circle,rgba(255,106,43,.34),transparent 68%);
  pointer-events:none;
}
.page-hero .inner{position:relative;z-index:1;padding:74px 0 66px;max-width:800px}
.page-hero h1{color:#fff;font-size:42px;line-height:1.24;margin-bottom:18px}
.page-hero .lead{color:rgba(255,255,255,.82);font-size:17.5px;max-width:680px;margin-bottom:26px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.hero-tags span{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.22);
  font-size:13.5px;color:#fff;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 数据条 ---------- */
.stats{background:var(--ink-deep);color:#fff;padding:34px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.stat .num{font-size:34px;font-weight:700;color:#fff;letter-spacing:-.02em;line-height:1.1}
.stat .num em{font-style:normal;font-size:18px;color:var(--lime);margin-left:2px}
.stat .lbl{font-size:13.5px;color:rgba(255,255,255,.66);margin-top:6px}

/* ---------- 布局：左锚点 + 右长文 ---------- */
.doc-layout{display:grid;grid-template-columns:236px minmax(0,1fr);gap:44px;align-items:start}
.side-nav{position:sticky;top:98px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:20px 16px;box-shadow:var(--sh-1)}
.side-nav h2{font-size:14px;letter-spacing:.06em;color:var(--muted);font-weight:600;margin-bottom:12px;padding-left:10px}
.side-nav ul{list-style:none;margin:0;padding:0}
.side-nav li{margin:0 0 2px}
.side-nav a{
  display:flex;align-items:center;gap:10px;
  padding:10px 10px;border-radius:9px;
  font-size:14.5px;color:var(--text);line-height:1.5;
}
.side-nav a .idx{
  width:22px;height:22px;flex:0 0 22px;border-radius:7px;
  background:var(--bg-2);color:var(--muted);
  font-size:12px;display:flex;align-items:center;justify-content:center;font-weight:600;
  transition:.2s ease;
}
.side-nav a:hover{background:var(--bg);color:var(--ink)}
.side-nav a.active{background:#F3F0FA;color:var(--ink);font-weight:600}
.side-nav a.active .idx{background:var(--ink);color:#fff}
.side-cta{margin-top:16px;padding-top:16px;border-top:1px dashed var(--line)}
.side-cta .btn-main{width:100%;padding:11px 14px;font-size:14.5px}

.doc{max-width:var(--read)}
.doc-section{padding-top:66px;scroll-margin-top:100px}
.doc-section:first-child{padding-top:0}
.doc-section h2{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.doc-section h2::before{content:"";width:5px;height:26px;border-radius:3px;background:var(--orange);flex:0 0 5px}
.doc-section h3{margin:28px 0 10px;color:var(--ink)}
.doc p{font-size:16.5px}

/* ---------- 卡片 / 面板 ---------- */
.card-soft{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1)}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.feature{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:26px 24px;box-shadow:var(--sh-1);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;height:100%}
.feature:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D8D1C7}
.feature .ico{
  width:44px;height:44px;border-radius:13px;background:#F3F0FA;color:var(--ink);
  display:flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:16px;
}
.feature h3{font-size:18px;margin-bottom:8px}
.feature p{font-size:15px;color:var(--muted);line-height:1.8;margin-bottom:12px}
.feature ul{font-size:14.5px;color:var(--muted);padding-left:18px;margin-bottom:0}
.feature ul li::marker{color:var(--orange)}

.tag{display:inline-flex;align-items:center;gap:5px;padding:4px 11px;border-radius:var(--r-pill);font-size:12.5px;font-weight:600;background:#F3F0FA;color:var(--ink)}
.tag.orange{background:rgba(255,106,43,.12);color:#C74A17}
.tag.lime{background:rgba(184,242,77,.28);color:#4C6B12}
.tag.grey{background:var(--bg-2);color:var(--muted)}

/* ---------- 表格 ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-card);background:var(--card);box-shadow:var(--sh-1)}
table.data{width:100%;border-collapse:collapse;min-width:560px}
table.data th,table.data td{padding:14px 18px;text-align:left;font-size:15px;border-bottom:1px solid var(--line);vertical-align:top}
table.data th{background:var(--bg-2);color:var(--ink);font-weight:600;font-size:14px;letter-spacing:.02em;white-space:nowrap}
table.data tr:last-child td{border-bottom:none}
table.data td strong{color:var(--ink)}

/* ---------- 步骤 / 时间线 ---------- */
.steps{position:relative;padding-left:34px}
.steps::before{content:"";position:absolute;left:11px;top:6px;bottom:6px;width:2px;background:var(--line)}
.step{position:relative;padding-bottom:26px}
.step:last-child{padding-bottom:0}
.step::before{content:"";position:absolute;left:-29px;top:7px;width:12px;height:12px;border-radius:50%;background:var(--orange);box-shadow:0 0 0 4px rgba(255,106,43,.16)}
.step h3{font-size:17.5px;margin:0 0 6px}
.step p{font-size:15.5px;color:var(--muted);margin-bottom:0;line-height:1.85}

/* ---------- 图文交替 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.split .media img{width:100%;height:300px;object-fit:cover;border-radius:var(--r-kv);box-shadow:var(--sh-1)}
.split h3{font-size:22px;margin-bottom:12px}
.split p{color:var(--muted);font-size:16px}
.check-list{list-style:none;padding:0;margin:14px 0 0}
.check-list li{position:relative;padding-left:26px;font-size:15.5px;color:var(--text);margin-bottom:9px}
.check-list li::before{
  content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;left:0;top:1px;color:var(--orange);font-size:13px;
}

/* ---------- 列表卡 ---------- */
.post-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);height:100%;display:flex;flex-direction:column;transition:transform .22s ease,box-shadow .22s ease}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.post-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-2);border-radius:0}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .35s ease}
.post-card:hover .thumb img{transform:scale(1.04)}
.post-card .body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1}
.post-card h3{font-size:17.5px;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card p{font-size:14.5px;color:var(--muted);line-height:1.8;margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card .meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13.5px;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq .accordion-item{border:1px solid var(--line);border-radius:14px;background:var(--card);margin-bottom:12px;overflow:hidden;box-shadow:var(--sh-1)}
.faq .accordion-button{
  background:var(--card);color:var(--ink);font-size:17px;font-weight:600;
  padding:18px 22px;box-shadow:none;line-height:1.6;
}
.faq .accordion-button:not(.collapsed){background:#F3F0FA;color:var(--ink)}
.faq .accordion-button:focus{box-shadow:none;outline:2px solid var(--orange);outline-offset:-2px}
.faq .accordion-button::after{
  width:26px;height:26px;border-radius:8px;background-color:var(--bg-2);
  background-image:none;position:relative;flex:0 0 26px;
}
.faq .accordion-button::after{
  content:"+";display:flex;align-items:center;justify-content:center;
  color:var(--ink);font-size:17px;font-weight:600;line-height:1;
}
.faq .accordion-button:not(.collapsed)::after{content:"−";background-color:var(--ink);color:#fff}
.faq .accordion-body{padding:6px 22px 20px;font-size:15.5px;color:var(--muted);line-height:1.9;background:#FDFCFA}

/* ---------- CTA ---------- */
.cta-band{background:linear-gradient(135deg,var(--ink-deep) 0%,var(--ink) 62%,#33285A 100%);color:#fff;border-radius:22px;padding:48px 44px;display:grid;grid-template-columns:1.35fr 1fr;gap:36px;align-items:center;box-shadow:var(--sh-2)}
.cta-band h2{color:#fff;font-size:28px;margin-bottom:12px}
.cta-band p{color:rgba(255,255,255,.76);font-size:16px;margin-bottom:0}
.cta-band .actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-deep);color:rgba(255,255,255,.72);margin-top:80px;padding:62px 0 26px;font-size:15px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-brand .mark{width:38px;height:38px;border-radius:12px;background:var(--orange);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px}
.footer-brand .name{display:flex;flex-direction:column;color:#fff;font-weight:700;font-size:17px;line-height:1.15}
.footer-brand .name small{font-size:11px;font-weight:500;color:rgba(255,255,255,.55);margin-top:3px;letter-spacing:.03em}
.footer-desc{font-size:14.5px;line-height:1.9;color:rgba(255,255,255,.62);margin:0;max-width:360px}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px}
.footer-col a{display:block;color:rgba(255,255,255,.66);font-size:14.5px;padding:5px 0}
.footer-col a:hover{color:var(--orange)}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .doc-layout{grid-template-columns:210px minmax(0,1fr);gap:32px}
  .grid-4{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:991.98px){
  body{font-size:16px}
  .section{padding:56px 0}
  .nav-toggle{display:flex}
  .nav-shell{
    position:fixed;left:0;right:0;top:72px;
    max-height:calc(100vh - 72px);overflow-y:auto;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:var(--sh-2);
    flex-direction:column;align-items:stretch;gap:0;
    padding:10px 20px 22px;display:none;
  }
  .nav-shell.is-open{display:flex}
  .main-nav{flex-direction:column;align-items:stretch;gap:0}
  .main-nav a{padding:15px 2px;min-height:48px;display:flex;align-items:center;border-bottom:1px solid var(--line);border-radius:0}
  .main-nav a.active::after{display:none}
  .main-nav a.active{color:var(--orange)}
  .btn-nav{margin-top:16px;padding:14px;width:100%}
  .page-hero .inner{padding:52px 0 48px}
  .page-hero h1{font-size:32px}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .stat .num{font-size:28px}
  .doc-layout{grid-template-columns:1fr;gap:26px}
  .side-nav{position:static;top:auto;padding:14px}
  .side-nav ul{display:flex;flex-wrap:wrap;gap:8px}
  .side-nav a{background:var(--bg);padding:9px 13px;font-size:14px}
  .side-nav a .idx{display:none}
  .side-nav h2{padding-left:0}
  .side-cta{display:flex;gap:10px}
  .side-cta .btn-main{width:auto}
  .doc-section{padding-top:48px}
  .split{grid-template-columns:1fr;gap:24px}
  .split .media img{height:250px}
  .cta-band{grid-template-columns:1fr;padding:34px 26px;gap:24px}
  .cta-band .actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-desc{max-width:none}
}
@media (max-width:767.98px){
  .grid-3,.grid-2{grid-template-columns:1fr}
  .page-hero h1{font-size:29px}
  .page-hero .lead{font-size:16px}
  h2{font-size:24px}
  .doc-section h2::before{height:22px}
}
@media (max-width:520px){
  .wrap{padding:0 16px}
  .logo .name{font-size:15.5px}
  .logo .name small{font-size:10px}
  .stats-grid{grid-template-columns:1fr 1fr}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
  .cta-band .actions .btn-main,.cta-band .actions .btn-ghost{width:100%}
  .card-soft,.feature{padding:20px}
}