/* roulang page: index */
:root{
  --sky-void:#0E0B1E;
  --sky-deep:#171233;
  --sky-raise:#221A45;
  --sky-line:rgba(168,152,255,.16);
  --star-mint:#4FE0C0;
  --star-mint-deep:#2BB79A;
  --star-gold:#F0C46A;
  --comet-rose:#FF6B9A;
  --ink-100:#F2F0FA;
  --ink-70:#C3BEDC;
  --ink-45:#8E88AC;
  --paper:#F6F3EC;
  --paper-ink:#241F35;
  --paper-sub:#EDE8DC;
  --r-lg:18px;
  --r-md:14px;
  --r-btn:12px;
  --r-input:10px;
  --r-pill:999px;
  --r-img:12px;
  --sh-card:0 18px 40px rgba(10,8,30,.55);
  --sh-float:0 24px 60px rgba(6,4,20,.7);
  --sidebar-w:240px;
  --page-max:1200px;
  --font-serif:"Noto Serif SC",Georgia,"Songti SC",serif;
  --font-sans:"Noto Sans SC",system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  --font-num:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--sky-void);
  color:var(--ink-100);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  opacity:.07;
  background-image:
    radial-gradient(1px 1px at 18% 22%,var(--ink-100) 50%,transparent 51%),
    radial-gradient(1px 1px at 72% 58%,var(--ink-100) 50%,transparent 51%),
    radial-gradient(1px 1px at 44% 82%,var(--ink-100) 50%,transparent 51%);
  background-size:320px 320px,460px 460px,540px 540px;
}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);font-weight:700;letter-spacing:-.01em;line-height:1.35}
h1{font-size:clamp(32px,4.4vw,54px);line-height:1.2}
h2{font-size:clamp(23px,2.6vw,32px)}
h3{font-size:19px;line-height:1.5}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
img{display:block;max-width:100%;height:auto}
ul,ol{margin:0;padding:0;list-style:none}
a{color:var(--ink-70);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease,transform .2s ease}
a:hover{color:var(--star-mint);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0;padding:0}
:focus-visible{outline:2px solid var(--star-mint);outline-offset:2px}
::selection{background:var(--star-mint);color:#0B1A18}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ===== 布局骨架 ===== */
.page{position:relative;z-index:1;margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column}
main{flex:1}
.container{width:100%;max-width:var(--page-max);margin:0 auto;padding:0 32px}
.section{padding:72px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:30px}
.section-note{font-size:14px;color:var(--ink-45);margin:0;max-width:360px;line-height:1.7;text-align:right}
.tag{display:inline-block;font-size:12px;letter-spacing:.14em;color:var(--star-mint);background:rgba(79,224,192,.08);border:1px solid rgba(79,224,192,.28);border-radius:var(--r-pill);padding:4px 11px;margin-bottom:14px}
.chip{display:inline-block;font-size:12px;color:var(--ink-70);background:rgba(168,152,255,.12);border:1px solid var(--sky-line);border-radius:var(--r-pill);padding:2px 10px}

/* ===== 左侧竖向导航 ===== */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--sky-deep);border-right:1px solid var(--sky-line);
  display:flex;flex-direction:column;padding:22px 16px;z-index:70;
}
.brand{display:flex;align-items:center;gap:11px;padding:6px 8px 22px;border-bottom:1px solid var(--sky-line);margin-bottom:20px}
.brand:hover{text-decoration:none;color:inherit}
.brand-mark{
  width:38px;height:38px;flex:none;display:grid;place-items:center;border-radius:12px;
  background:linear-gradient(150deg,rgba(79,224,192,.20),rgba(240,196,106,.10));
  border:1px solid var(--sky-line);color:var(--star-mint);
}
.brand-text{display:flex;flex-direction:column;line-height:1.22;min-width:0}
.brand-text strong{font-family:var(--font-serif);font-size:16px;color:var(--ink-100)}
.brand-text em{font-style:normal;font-size:11.5px;color:var(--ink-45);letter-spacing:.18em}
.nav{display:flex;flex-direction:column;gap:4px;flex:1}
.nav-link{
  position:relative;display:flex;align-items:center;gap:11px;min-height:44px;
  padding:10px 12px 10px 18px;border-radius:var(--r-btn);
  color:var(--ink-70);font-size:14.5px;font-weight:500;
}
.nav-link svg{flex:none;opacity:.8}
.nav-link:hover{background:rgba(79,224,192,.07);color:var(--ink-100);text-decoration:none}
.nav-link.is-active{background:rgba(79,224,192,.09);color:var(--ink-100)}
.nav-link.is-active::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:3px;height:20px;border-radius:var(--r-pill);background:var(--star-mint)}
.nav-link.is-active svg{color:var(--star-mint);opacity:1}
.sidebar-foot{border-top:1px solid var(--sky-line);padding-top:16px;margin-top:16px}
.login-hint{font-size:12px;color:var(--ink-45);line-height:1.6;margin:10px 0 0;text-align:center}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-family:var(--font-sans);font-size:15px;font-weight:500;border:1px solid transparent;
  transition:transform .2s ease,background-color .2s ease,box-shadow .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--star-mint);color:#0B1A18}
.btn-primary:hover{background:#69E9CF;color:#0B1A18;transform:translateY(-1px);box-shadow:0 14px 28px rgba(79,224,192,.26);text-decoration:none}
.btn-primary:active{transform:translateY(0);background:var(--star-mint-deep)}
.btn-ghost{background:transparent;border-color:var(--star-mint);color:var(--star-mint)}
.btn-ghost:hover{background:rgba(79,224,192,.12);color:var(--star-mint);text-decoration:none}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;color:var(--ink-70);min-height:44px}
.btn-text span{transition:transform .2s ease}
.btn-text:hover{color:var(--star-mint);text-decoration:none}
.btn-text:hover span{transform:translateX(3px)}
.btn-block{width:100%}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none}

/* ===== 移动端顶栏与抽屉 ===== */
.topbar{
  display:none;position:sticky;top:0;z-index:75;
  height:60px;align-items:center;justify-content:space-between;gap:12px;
  padding:0 16px;background:rgba(23,18,51,.96);border-bottom:1px solid var(--sky-line);
}
.topbar-brand{display:flex;align-items:center;gap:9px;color:var(--ink-100);font-family:var(--font-serif);font-size:15.5px}
.topbar-brand:hover{text-decoration:none;color:var(--ink-100)}
.topbar-brand .brand-mark{width:30px;height:30px;border-radius:9px}
.hamburger{width:44px;height:44px;display:grid;place-items:center;gap:0;border-radius:var(--r-btn);color:var(--ink-100)}
.hamburger span{display:block;width:19px;height:1.6px;background:currentColor;margin:2.4px 0;border-radius:2px;transition:transform .25s ease,opacity .25s ease}
body.menu-open .hamburger span:nth-child(1){transform:translateY(6.4px) rotate(45deg)}
body.menu-open .hamburger span:nth-child(2){opacity:0}
body.menu-open .hamburger span:nth-child(3){transform:translateY(-6.4px) rotate(-45deg)}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:84vw;max-width:340px;z-index:90;
  background:var(--sky-deep);border-right:1px solid var(--sky-line);
  padding:20px 16px;display:flex;flex-direction:column;overflow-y:auto;
  transform:translateX(-102%);transition:transform .28s ease;
}
body.menu-open .drawer{transform:translateX(0)}
.overlay{position:fixed;inset:0;background:rgba(10,8,30,.6);z-index:80;opacity:0;pointer-events:none;transition:opacity .28s ease}
body.menu-open .overlay{opacity:1;pointer-events:auto}

/* ===== 首屏 Hero ===== */
.hero{display:flex;align-items:center;padding:64px 0;min-height:72vh}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center;width:100%}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--star-mint);background:rgba(79,224,192,.08);border:1px solid rgba(79,224,192,.24);border-radius:var(--r-pill);padding:5px 13px;margin-bottom:20px}
.hero-eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--star-mint)}
.hero h1{margin-bottom:18px}
.hero-sub{font-size:clamp(16px,1.6vw,19px);color:var(--ink-70);margin:0 0 28px;max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:18px}
.hero-status{font-size:13.5px;color:var(--ink-45);margin:0}
.hero-status b{color:var(--star-gold);font-variant-numeric:tabular-nums}
.hero-media{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--sky-line);box-shadow:var(--sh-card);aspect-ratio:4/3;background:linear-gradient(160deg,var(--sky-raise),var(--sky-deep))}
.hero-media img{width:100%;height:100%;object-fit:cover}
.badge{position:absolute;display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:500;padding:6px 12px;border-radius:var(--r-pill);line-height:1.4}
.badge-live{top:14px;left:14px;background:var(--comet-rose);color:#3A0C1E}
.badge-live::before{content:"";width:6px;height:6px;border-radius:50%;background:#3A0C1E;opacity:.85}
.badge-view{right:14px;bottom:14px;background:rgba(14,11,30,.8);color:var(--ink-100);border:1px solid var(--sky-line)}

/* ===== 倒计时 ===== */
.countdown-panel{
  background:var(--sky-deep);border:1px solid var(--sky-line);border-radius:var(--r-lg);
  box-shadow:var(--sh-card);padding:40px 28px;text-align:center;
  position:relative;overflow:hidden;
}
.countdown-panel::after{
  content:"";position:absolute;left:50%;top:-140px;transform:translateX(-50%);
  width:520px;height:280px;border-radius:50%;
  border:1px solid rgba(79,224,192,.16);pointer-events:none;
}
.countdown-panel h2{margin-bottom:26px}
.countdown{display:flex;align-items:flex-start;justify-content:center;gap:12px;flex-wrap:nowrap}
.cd-item{display:flex;flex-direction:column;align-items:center;gap:8px}
.cd-cell{
  width:64px;height:64px;border-radius:var(--r-md);
  background:var(--sky-raise);border:1px solid var(--sky-line);
  display:grid;place-items:center;
}
.cd-num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-weight:700;font-size:24px;color:var(--star-gold);line-height:1}
.cd-label{font-size:12px;color:var(--ink-45)}
.cd-colon{align-self:flex-start;height:64px;display:grid;place-items:center;color:rgba(168,152,255,.35);font-size:22px;font-weight:700}
.countdown-topic{font-size:15px;color:var(--ink-70);margin:24px 0 20px;font-variant-numeric:tabular-nums}

/* ===== 看点列表 ===== */
.highlight-list{display:flex;flex-direction:column}
.hl-item{position:relative;display:grid;grid-template-columns:auto 1fr;gap:18px;padding-bottom:30px}
.hl-item:last-child{padding-bottom:0}
.hl-item:not(:last-child)::after{content:"";position:absolute;left:13px;top:34px;bottom:6px;width:1px;background:var(--sky-line)}
.hl-dot{
  width:28px;height:28px;border-radius:50%;border:1px solid rgba(79,224,192,.55);
  color:var(--star-mint);background:var(--sky-void);
  display:grid;place-items:center;font-family:var(--font-num);font-size:12.5px;font-weight:700;
}
.hl-top{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:6px}
.hl-body p{font-size:14.5px;color:var(--ink-45);margin:0;max-width:34em}
.time-tag{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:12.5px;color:var(--star-gold);background:rgba(240,196,106,.10);border:1px solid rgba(240,196,106,.24);border-radius:var(--r-pill);padding:2px 10px}

/* ===== 订阅表单 ===== */
.subscribe-card{
  background:var(--sky-deep);border:1px solid var(--sky-line);border-radius:var(--r-lg);
  box-shadow:var(--sh-card);padding:44px 32px;text-align:center;
}
.subscribe-copy{max-width:600px;margin:0 auto 26px}
.subscribe-copy p{color:var(--ink-45);font-size:15px;margin:10px 0 0}
.subscribe-form{display:grid;grid-template-columns:1fr auto;gap:12px;max-width:520px;margin:0 auto;text-align:left}
.field{display:flex;flex-direction:column;gap:8px}
input[type="text"],input[type="password"],input[type="email"],input[type="tel"]{
  width:100%;min-height:46px;padding:0 14px;border-radius:var(--r-input);
  background:var(--sky-void);border:1px solid var(--sky-line);color:var(--ink-100);
  font-size:15px;transition:border-color .2s ease,box-shadow .2s ease;
}
input::placeholder{color:var(--ink-45)}
input:hover{border-color:rgba(168,152,255,.3)}
input:focus{outline:none;border-color:var(--star-mint);box-shadow:0 0 0 3px rgba(79,224,192,.16)}
input.is-error{border-color:var(--comet-rose);box-shadow:0 0 0 3px rgba(255,107,154,.16)}
.check{grid-column:1/-1;display:flex;align-items:center;gap:9px;font-size:13px;color:var(--ink-45);cursor:pointer;min-height:32px}
.check input{width:16px;height:16px;flex:none;accent-color:var(--star-mint)}
.form-msg{grid-column:1/-1;font-size:13px;margin:0;min-height:19px;color:var(--ink-45)}
.form-msg.is-ok{color:var(--star-mint)}
.form-msg.is-fail{color:var(--comet-rose)}

/* ===== 卡片网格 ===== */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;background:var(--sky-raise);
  border:1px solid var(--sky-line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-card);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.card:hover{transform:translateY(-3px);border-color:rgba(79,224,192,.3);box-shadow:0 22px 46px rgba(10,8,30,.6);text-decoration:none}
.card:hover h3{color:var(--star-mint)}
.thumb{position:relative;aspect-ratio:16/9;background:var(--sky-deep);overflow:hidden}
.thumb img{width:100%;height:100%;object-fit:cover}
.dur{
  position:absolute;right:10px;bottom:10px;font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:12px;color:var(--ink-100);background:rgba(14,11,30,.82);
  border:1px solid var(--sky-line);border-radius:var(--r-pill);padding:2px 9px;
}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:8px}
.card-body h3{font-size:17.5px;transition:color .2s ease}
.card-body p{font-size:13.5px;color:var(--ink-45);margin:0}
.meta{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-45);font-variant-numeric:tabular-nums}
.meta time{font-variant-numeric:tabular-nums}

/* ===== 最新信息列表 ===== */
.news-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.news-card{
  display:flex;gap:18px;padding:18px;background:var(--sky-raise);
  border:1px solid var(--sky-line);border-radius:var(--r-lg);box-shadow:var(--sh-card);
  transition:transform .2s ease,border-color .2s ease;
}
.news-card:hover{transform:translateY(-3px);border-color:rgba(79,224,192,.3);text-decoration:none}
.news-card:hover h3{color:var(--star-mint)}
.news-thumb{width:180px;flex:none;aspect-ratio:16/10;border-radius:var(--r-img);overflow:hidden;background:var(--sky-deep)}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-body{min-width:0;display:flex;flex-direction:column;gap:8px;flex:1}
.news-body h3{font-size:17px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .2s ease}
.news-body p{font-size:13.5px;color:var(--ink-45);line-height:1.7;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{display:flex;align-items:center;gap:10px;margin-top:auto;font-size:12.5px;color:var(--ink-45)}
.news-foot .arrow{margin-left:auto;color:var(--star-mint);transition:transform .2s ease}
.news-card:hover .news-foot .arrow{transform:translateX(3px)}
.empty-state{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:14px;
  padding:52px 24px;text-align:center;
  background:var(--sky-deep);border:1px dashed var(--sky-line);border-radius:var(--r-lg);
}
.empty-state .empty-ico{width:44px;height:44px;border-radius:50%;border:1px solid rgba(79,224,192,.4);color:var(--star-mint);display:grid;place-items:center}
.empty-state p{font-size:14.5px;color:var(--ink-45);margin:0}

/* ===== 登录区 ===== */
.login-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:stretch}
.login-visual{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--sky-line);box-shadow:var(--sh-card);background:var(--sky-deep);min-height:380px}
.login-visual img{width:100%;height:100%;object-fit:cover}
.login-card{
  background:var(--sky-raise);border:1px solid var(--sky-line);border-radius:var(--r-lg);
  box-shadow:var(--sh-card);padding:36px 32px;display:flex;flex-direction:column;
}
.login-card h2{margin-bottom:8px}
.login-sub{font-size:14.5px;color:var(--ink-45);margin:0 0 24px}
.login-form{display:flex;flex-direction:column;gap:16px}
.login-form label{font-size:13.5px;color:var(--ink-70);margin-bottom:7px;display:block}
.form-row{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.form-row .check{grid-column:auto}
.form-row a{font-size:13.5px}
.login-links{display:flex;align-items:center;justify-content:center;gap:10px;font-size:13.5px;color:var(--ink-45);margin-top:4px}
.login-links span{color:var(--sky-line)}
.btn-loading::after{content:"";width:14px;height:14px;border-radius:50%;border:2px solid rgba(11,26,24,.35);border-top-color:#0B1A18;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* ===== FAQ ===== */
.faq{border:1px solid var(--sky-line);border-radius:var(--r-lg);overflow:hidden;background:var(--sky-raise)}
.faq-item{border-bottom:1px solid var(--sky-line);transition:background-color .2s ease}
.faq-item:last-child{border-bottom:0}
.faq-item.is-open{background:var(--sky-deep)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:19px 22px;text-align:left;font-family:var(--font-sans);
  font-size:17px;font-weight:500;color:var(--ink-100);min-height:56px;
}
.faq-q:hover{color:var(--star-mint)}
.faq-ico{position:relative;width:14px;height:14px;flex:none;transition:transform .25s ease}
.faq-ico::before,.faq-ico::after{content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px}
.faq-ico::before{width:14px;height:1.6px;transform:translate(-50%,-50%)}
.faq-ico::after{width:1.6px;height:14px;transform:translate(-50%,-50%)}
.faq-item.is-open .faq-ico{transform:rotate(180deg)}
.faq-item.is-open .faq-ico::after{opacity:0}
.faq-a{display:none;padding:0 22px 22px}
.faq-item.is-open .faq-a{display:block}
.faq-a p{font-size:14.5px;color:var(--ink-70);line-height:1.85;margin:0;max-width:62em}

/* ===== CTA 条 ===== */
.cta-bar{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  background:var(--sky-deep);border:1px solid var(--sky-line);border-radius:var(--r-lg);
  box-shadow:var(--sh-card);padding:40px 36px;
}
.cta-bar::before{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;
  border-radius:50%;border:1px solid rgba(79,224,192,.14);pointer-events:none;
}
.cta-copy h2{font-size:clamp(21px,2.3vw,28px);margin-bottom:8px}
.cta-copy p{font-size:14.5px;color:var(--ink-45);margin:0}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ===== 页脚 ===== */
.site-footer{background:var(--sky-deep);border-top:1px solid var(--sky-line);margin-top:72px;padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:36px;padding-bottom:40px;border-bottom:1px solid var(--sky-line)}
.footer-brand .brand{border-bottom:0;padding:0;margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--ink-45);line-height:1.8;max-width:26em}
.footer-col h4{font-size:15px;color:var(--ink-100);margin-bottom:16px;font-family:var(--font-sans);font-weight:500}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:var(--ink-45)}
.footer-sub p{font-size:13.5px;color:var(--ink-45);margin:0 0 14px}
.footer-sub form{display:flex;gap:10px}
.footer-sub input{min-height:44px}
.footer-sub .btn{padding:0 16px;min-height:44px}
.footer-note{font-size:12.5px;color:var(--ink-45);margin:12px 0 0;min-height:18px}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:24px}
.footer-bottom p{margin:0;font-size:13px;color:var(--ink-45)}

/* ===== 992–1199 侧栏图标模式 ===== */
@media (min-width:992px) and (max-width:1199px){
  :root{--sidebar-w:88px}
  .sidebar{padding:18px 10px;align-items:center}
  .brand{justify-content:center;padding:6px 0 18px}
  .brand-text{display:none}
  .nav{width:100%}
  .nav-link{justify-content:center;padding:12px 0;font-size:0;gap:0}
  .nav-link .nav-txt{display:none}
  .nav-link.is-active::before{left:2px}
  .sidebar-foot{width:100%}
  .sidebar-foot .btn{font-size:0;padding:0}
  .sidebar-foot .btn::before{content:"→";font-size:19px}
  .login-hint{display:none}
}
@media (min-width:992px){
  .topbar,.drawer,.overlay{display:none}
}
@media (max-width:991px){
  .page{margin-left:0}
  .topbar{display:flex}
  .hero{min-height:auto;padding:44px 0}
}

/* ===== 平板 ===== */
@media (max-width:1199px){
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
  .footer-sub{grid-column:1/-1}
  .container{padding:0 24px}
  .section{padding:56px 0}
}
@media (max-width:991px){
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-media{order:-1;aspect-ratio:16/9}
  .hero-sub{max-width:none}
  .login-grid{grid-template-columns:1fr}
  .login-visual{min-height:220px;max-height:280px}
  .news-list{grid-template-columns:1fr}
  .section-note{text-align:left}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:44px 0}
  .grid-3{grid-template-columns:1fr}
  .cd-cell{width:56px;height:56px}
  .cd-num{font-size:21px}
  .cd-colon{height:56px}
  .countdown-panel{padding:32px 18px}
  .subscribe-card{padding:32px 18px}
  .subscribe-form{grid-template-columns:1fr}
  .subscribe-form .btn{width:100%}
  .cta-bar{padding:30px 22px;flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1/-1}
  .login-card{padding:28px 20px}
  .news-card{flex-direction:column}
  .news-thumb{width:100%}
}
@media (max-width:575px){
  h1{font-size:30px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .cd-cell{width:48px;height:48px}
  .cd-num{font-size:18px}
  .cd-colon{height:48px;font-size:18px}
  .countdown{gap:8px}
  .faq-q{font-size:16px;padding:16px 18px}
  .faq-a{padding:0 18px 18px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (min-width:1440px){
  :root{--page-max:1280px}
}

/* roulang page: article */
/* ============ 设计变量 ============ */
:root{
  --sky-void:#0E0B1E;
  --sky-deep:#171233;
  --sky-raise:#221A45;
  --sky-line:rgba(168,152,255,.16);
  --star-mint:#4FE0C0;
  --star-mint-deep:#2BB79A;
  --star-gold:#F0C46A;
  --comet-rose:#FF6B9A;
  --ink-100:#F2F0FA;
  --ink-70:#C3BEDC;
  --ink-45:#8E88AC;
  --paper:#F6F3EC;
  --paper-ink:#241F35;
  --paper-sub:#EDE8DC;
  --ink-on-mint:#07231D;

  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;
  --r-xs:10px;
  --r-pill:999px;

  --shadow-card:0 18px 40px rgba(10,8,30,.55);
  --shadow-float:0 24px 60px rgba(6,4,20,.7);
  --ring:0 0 0 2px var(--sky-void), 0 0 0 4px var(--star-mint);

  --nav-w:240px;
  --gap:24px;
  --sec:72px;
  --pad-x:24px;

  --font-serif:"Noto Serif SC",Georgia,"Songti SC",serif;
  --font-sans:"Noto Sans SC",system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif;
  --font-num:"SFMono-Regular",ui-monospace,"Roboto Mono",Menlo,Consolas,monospace;
}

/* ============ reset / base ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--sky-void);
  color:var(--ink-70);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img,svg{display:block;max-width:100%;}
img{height:auto;}
a{color:var(--ink-70);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--star-mint);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input{font:inherit;color:inherit;}
h1,h2,h3,h4{
  font-family:var(--font-serif);
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--ink-100);
  margin:0;
  line-height:1.35;
}
p{margin:0 0 1.1em;}
ul,ol{margin:0;padding:0;list-style:none;}
time,.num{font-variant-numeric:tabular-nums;}
:focus-visible{outline:2px solid var(--star-mint);outline-offset:2px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}
::selection{background:rgba(79,224,192,.28);color:var(--ink-100);}

/* ============ 容器 ============ */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--pad-x);}
.section{padding:var(--sec) 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px;}
.section-head h2{font-size:clamp(22px,2.4vw,30px);line-height:1.35;}
.section-head .sub{font-size:13.5px;color:var(--ink-45);margin:8px 0 0;}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--star-mint);min-height:40px;}
.link-more::after{content:"→";transition:transform .2s ease;}
.link-more:hover{text-decoration:none;}
.link-more:hover::after{transform:translateX(3px);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--r-sm);
  border:1px solid transparent;font-size:15px;font-weight:500;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  text-align:center;white-space:nowrap;text-decoration:none;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--star-mint);color:var(--ink-on-mint);box-shadow:0 10px 24px rgba(79,224,192,.2);}
.btn-primary:hover{background:#63E7CB;color:var(--ink-on-mint);transform:translateY(-1px);box-shadow:0 14px 30px rgba(79,224,192,.28);}
.btn-primary:active{transform:none;background:var(--star-mint-deep);}
.btn-outline{border-color:rgba(79,224,192,.55);color:var(--star-mint);background:transparent;}
.btn-outline:hover{background:rgba(79,224,192,.12);color:var(--star-mint);}
.btn-ghost{color:var(--star-mint);padding:0 4px;background:transparent;}
.btn-ghost::after{content:"→";transition:transform .2s ease;}
.btn-ghost:hover{color:#7CEAD3;text-decoration:none;}
.btn-ghost:hover::after{transform:translateX(3px);}
.btn-block{width:100%;}
.btn-sm{min-height:38px;padding:0 14px;font-size:13.5px;border-radius:var(--r-xs);}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.4;pointer-events:none;}

/* ============ 品牌 ============ */
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink-100);}
.brand:hover{text-decoration:none;color:var(--ink-100);}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;border-radius:var(--r-xs);
  display:grid;place-items:center;color:var(--star-mint);
  border:1px solid var(--sky-line);
  background:radial-gradient(circle at 32% 28%,rgba(79,224,192,.2),transparent 72%),var(--sky-raise);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-family:var(--font-serif);font-size:16px;color:var(--ink-100);letter-spacing:.01em;}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.22em;color:var(--ink-45);}

/* ============ 左侧主导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);
  background:var(--sky-deep);border-right:1px solid var(--sky-line);
  display:flex;flex-direction:column;gap:20px;
  padding:24px 18px 20px;overflow-y:auto;z-index:60;
}
.sidebar .nav{display:flex;flex-direction:column;gap:4px;}
.nav-link{
  position:relative;display:flex;align-items:center;gap:10px;
  min-height:44px;padding:10px 12px;border-radius:var(--r-sm);
  font-size:15px;color:var(--ink-70);text-decoration:none;
  transition:background .18s ease,color .18s ease;
}
.nav-link::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:0;border-radius:2px;background:var(--star-mint);
  transition:height .2s ease;
}
.nav-link:hover{background:rgba(79,224,192,.06);color:var(--ink-100);text-decoration:none;}
.nav-link:hover::before{height:14px;}
.nav-link.is-active{background:rgba(79,224,192,.08);color:var(--ink-100);}
.nav-link.is-active::before{height:22px;}
.nav-link svg{flex:0 0 auto;}
.side-foot{margin-top:auto;display:flex;flex-direction:column;gap:10px;}
.side-note{font-size:12.5px;color:var(--ink-45);margin:0;line-height:1.6;}
.side-close{display:none;width:40px;height:40px;border-radius:var(--r-xs);border:1px solid var(--sky-line);color:var(--ink-100);align-items:center;justify-content:center;background:var(--sky-raise);}
.side-head{display:flex;align-items:center;justify-content:space-between;gap:10px;}

/* ============ 移动端顶栏 ============ */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:60px;z-index:70;
  align-items:center;justify-content:space-between;gap:12px;
  padding:0 16px;background:#141029;border-bottom:1px solid var(--sky-line);
}
.top-actions{display:flex;align-items:center;gap:8px;}
.hamburger{
  width:44px;height:44px;border-radius:var(--r-xs);
  border:1px solid var(--sky-line);background:var(--sky-raise);
  display:grid;place-items:center;color:var(--ink-100);
}
.hamburger:active{transform:scale(.97);}
.overlay{
  position:fixed;inset:0;background:rgba(10,8,30,.6);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:75;
}
.overlay.is-open{opacity:1;visibility:visible;}

/* ============ 页面外壳 ============ */
.page{margin-left:var(--nav-w);display:flex;flex-direction:column;min-height:100vh;}
.page-main{flex:1 1 auto;padding:40px 0 var(--sec);position:relative;overflow:hidden;}

/* ============ 面包屑 ============ */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:4px 8px;
  font-size:13.5px;color:var(--ink-45);margin-bottom:22px;
}
.crumbs a{display:inline-flex;align-items:center;min-height:40px;color:var(--ink-45);}
.crumbs a:hover{color:var(--star-mint);text-decoration:none;}
.crumbs .sep{color:var(--ink-45);opacity:.55;}
.crumbs .current{color:var(--ink-70);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ============ 文章头部 ============ */
.article-head{max-width:860px;position:relative;z-index:2;}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 13px;
  border-radius:var(--r-pill);font-size:12.5px;letter-spacing:.02em;
  color:var(--star-mint);border:1px solid rgba(79,224,192,.32);background:rgba(79,224,192,.08);
}
.article-title{
  font-size:clamp(26px,3.3vw,42px);line-height:1.28;margin:16px 0 20px;
}
.meta-row{
  display:flex;flex-wrap:wrap;gap:8px 20px;font-size:13.5px;color:var(--ink-45);
  border-top:1px solid var(--sky-line);padding-top:16px;
}
.meta-row span{display:inline-flex;align-items:center;gap:8px;}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--ink-45);opacity:.5;}

/* ============ 文章布局 ============ */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;
  gap:32px;align-items:start;margin-top:32px;
}
.article-body-wrap{min-width:0;}

/* ============ 纸面阅读卡 ============ */
.paper{
  background:var(--paper);color:var(--paper-ink);
  border-radius:var(--r-lg);padding:48px;max-width:760px;margin:0 auto;
  box-shadow:var(--shadow-card);
}
.paper .prose{color:var(--paper-ink);font-size:16px;line-height:1.9;}
.paper .prose > *:first-child{margin-top:0;}
.prose p{margin:0 0 1.15em;}
.prose h2{
  font-family:var(--font-serif);font-size:26px;line-height:1.4;color:var(--paper-ink);
  margin:40px 0 16px;padding-left:14px;position:relative;
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:3px;border-radius:2px;
  background:var(--star-mint-deep);
}
.prose h3{font-size:19px;font-weight:700;color:var(--paper-ink);margin:28px 0 12px;line-height:1.5;}
.prose h4{font-size:16.5px;font-weight:700;color:var(--paper-ink);margin:22px 0 10px;}
.prose a{color:var(--star-mint-deep);text-decoration:underline;text-underline-offset:3px;}
.prose a:hover{color:#1F8F76;}
.prose strong{color:#1A1628;font-weight:700;}
.prose blockquote{
  margin:24px 0;padding:16px 20px;background:var(--paper-sub);
  border-left:3px solid var(--star-gold);border-radius:0 var(--r-sm) var(--r-sm) 0;
}
.prose blockquote p:last-child{margin-bottom:0;}
.prose ul,.prose ol{margin:0 0 1.15em;padding-left:1.4em;}
.prose ul{list-style:disc;}
.prose ul li{margin:6px 0;}
.prose ul li::marker{color:var(--star-mint-deep);}
.prose ol{list-style:decimal;}
.prose ol li{margin:6px 0;font-variant-numeric:tabular-nums;}
.prose ol li::marker{color:#1A1628;font-weight:700;}
.prose img{border-radius:var(--r-sm);margin:26px auto;box-shadow:0 10px 26px rgba(36,31,53,.16);}
.prose figure{margin:26px 0;}
.prose figcaption{font-size:13px;color:#6C6480;text-align:center;margin-top:10px;}
.prose hr{border:0;border-top:1px solid rgba(36,31,53,.14);margin:32px 0;}
.prose code{
  background:var(--sky-deep);color:var(--star-mint);
  padding:2px 7px;border-radius:6px;font-family:var(--font-num);font-size:.9em;
}
.prose pre{
  background:var(--sky-deep);color:#D9E9E4;border-radius:var(--r-sm);
  padding:18px 20px;overflow-x:auto;margin:24px 0;
  font-family:var(--font-num);font-size:13.5px;line-height:1.75;
}
.prose pre code{background:none;color:inherit;padding:0;}
.prose table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;
  border:1px solid rgba(36,31,53,.16);background:var(--paper);
}
.prose th{
  background:var(--paper-sub);color:var(--star-mint-deep);font-weight:700;
  text-align:left;letter-spacing:.02em;
}
.prose th,.prose td{padding:10px 14px;border-bottom:1px solid rgba(36,31,53,.1);border-right:1px solid rgba(36,31,53,.07);}
.prose th:last-child,.prose td:last-child{border-right:0;}
.prose tbody tr:nth-child(even){background:var(--paper-sub);}
.prose tbody tr:last-child td{border-bottom:0;}

/* ============ 空态 ============ */
.empty-state{
  background:var(--sky-raise);border:1px solid var(--sky-line);border-radius:var(--r-lg);
  padding:56px 28px;text-align:center;max-width:760px;margin:0 auto;
}
.empty-state .empty-icon{color:var(--star-mint);margin:0 auto 18px;opacity:.9;}
.empty-state h2{font-size:22px;margin-bottom:10px;}
.empty-state p{color:var(--ink-45);margin-bottom:22px;}

/* ============ 标签行 ============ */
.tag-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  margin:34px 0 0;padding-top:24px;border-top:1px solid var(--sky-line);
}
.tag-row .tag-label{font-size:13px;color:var(--ink-45);margin-right:2px;}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 13px;
  border-radius:var(--r-pill);background:var(--sky-raise);
  border:1px solid var(--sky-line);font-size:13px;color:var(--ink-70);
  transition:border-color .18s ease,color .18s ease;
}
.tag:hover{border-color:rgba(79,224,192,.4);color:var(--star-mint);text-decoration:none;}

/* ============ 上/下篇 ============ */
.pager{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:36px;}
.pager-card{
  display:flex;align-items:center;gap:14px;padding:18px 20px;
  background:var(--sky-raise);border:1px solid var(--sky-line);border-radius:var(--r-md);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.pager-card:hover{transform:translateY(-3px);border-color:rgba(79,224,192,.32);box-shadow:var(--shadow-card);text-decoration:none;}
.pager-card .arrow{font-size:18px;color:var(--star-mint);flex:0 0 auto;}
.pager-card .pager-txt{display:flex;flex-direction:column;gap:4px;min-width:0;}
.pager-card .pager-txt small{font-size:12.5px;color:var(--ink-45);letter-spacing:.06em;}
.pager-card .pager-txt strong{
  font-family:var(--font-serif);font-size:15.5px;color:var(--ink-100);font-weight:700;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.pager-card.is-next{justify-content:flex-end;text-align:right;}

/* ============ 相关推荐卡片 ============ */
.related{margin-top:var(--sec);}
.card-grid{display:grid;gap:var(--gap);}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr));}
.card{
  background:var(--sky-raise);border:1px solid var(--sky-line);border-radius:var(--r-md);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.card:hover{transform:translateY(-3px);border-color:rgba(79,224,192,.3);box-shadow:var(--shadow-card);}
.card:hover .card-title{color:var(--star-mint);}
.card-thumb{position:relative;aspect-ratio:16/9;background:var(--sky-raise);overflow:hidden;}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.card:hover .card-thumb img{transform:scale(1.04);}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-title{
  font-family:var(--font-serif);font-size:17px;line-height:1.5;color:var(--ink-100);font-weight:700;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s ease;
}
.card-desc{
  font-size:13.5px;color:var(--ink-45);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;font-size:12.5px;color:var(--ink-45);}
.chip{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12px;color:var(--star-mint);background:rgba(79,224,192,.1);border:1px solid rgba(79,224,192,.24);
}
.chip-gold{color:var(--star-gold);background:rgba(240,196,106,.1);border-color:rgba(240,196,106,.26);}
.chip-rose{color:var(--comet-rose);background:rgba(255,107,154,.12);border-color:rgba(255,107,154,.3);}

/* ============ 右侧栏 ============ */
.article-aside{display:flex;flex-direction:column;gap:18px;position:sticky;top:28px;}
.aside-card{
  background:var(--sky-deep);border:1px solid var(--sky-line);border-radius:var(--r-md);
  padding:20px;
}
.aside-title{
  font-size:15px;letter-spacing:.04em;color:var(--ink-100);margin-bottom:14px;
  font-family:var(--font-sans);font-weight:700;
}
.toc{display:flex;flex-direction:column;gap:2px;max-height:52vh;overflow-y:auto;}
.toc-empty{font-size:13px;color:var(--ink-45);margin:0;}
.toc-link{
  display:block;padding:8px 10px;border-radius:8px;font-size:13.5px;color:var(--ink-45);
  border-left:2px solid transparent;transition:color .18s ease,background .18s ease,border-color .18s ease;
}
.toc-link:hover{color:var(--ink-100);background:rgba(79,224,192,.06);text-decoration:none;}
.toc-item.toc-h3 .toc-link{padding-left:22px;font-size:13px;}
.toc-link.is-current{color:var(--star-mint);border-left-color:var(--star-mint);background:rgba(79,224,192,.08);}
.aside-links{display:flex;flex-direction:column;gap:2px;}
.aside-links a{
  display:flex;align-items:center;min-height:40px;padding:6px 10px;border-radius:8px;
  font-size:14px;color:var(--ink-70);
}
.aside-links a:hover{background:rgba(79,224,192,.06);color:var(--star-mint);text-decoration:none;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--sky-deep);border-top:1px solid var(--sky-line);
  padding:56px 0 24px;margin-top:auto;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.5fr;gap:36px;}
.footer-brand p{font-size:13.5px;color:var(--ink-45);margin:16px 0 0;max-width:32ch;}
.footer-col h4{
  font-family:var(--font-sans);font-size:14px;color:var(--ink-100);
  letter-spacing:.06em;margin-bottom:14px;font-weight:700;
}
.footer-col ul{display:flex;flex-direction:column;gap:2px;}
.footer-col ul a{display:inline-flex;align-items:center;min-height:38px;font-size:13.5px;color:var(--ink-45);}
.footer-col ul a:hover{color:var(--star-mint);text-decoration:none;}
.footer-sub p{font-size:13px;color:var(--ink-45);margin:0 0 12px;}
#footerSubForm{display:flex;gap:8px;}
#footerSubForm input{
  flex:1 1 auto;min-width:0;height:44px;padding:0 14px;border-radius:var(--r-xs);
  background:var(--sky-raise);border:1px solid var(--sky-line);color:var(--ink-100);font-size:14px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
#footerSubForm input::placeholder{color:var(--ink-45);}
#footerSubForm input:focus{border-color:var(--star-mint);outline:none;box-shadow:0 0 0 3px rgba(79,224,192,.16);}
.footer-note{font-size:12.5px;margin:10px 0 0;color:var(--ink-45);min-height:18px;}
.footer-note.is-ok{color:var(--star-mint);}
.footer-note.is-err{color:var(--comet-rose);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;
  border-top:1px solid var(--sky-line);margin-top:40px;padding-top:20px;
}
.footer-bottom p{font-size:12.5px;color:var(--ink-45);margin:0;}

/* ============ 装饰 ============ */
.page-glow{
  position:absolute;top:-220px;right:-160px;width:620px;height:620px;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  opacity:.16;pointer-events:none;border-radius:50%;
  -webkit-mask-image:radial-gradient(circle,#000 30%,transparent 72%);
  mask-image:radial-gradient(circle,#000 30%,transparent 72%);
}
.star-line{
  height:1px;width:100%;
  background:linear-gradient(90deg,transparent,rgba(168,152,255,.3),transparent);
}

/* ============ 断点：≥1440 ============ */
@media (min-width:1440px){
  :root{--nav-w:264px;--sec:80px;}
  .container{max-width:1280px;}
  .article-layout{grid-template-columns:minmax(0,1fr) 320px;gap:40px;}
}

/* ============ 断点：992–1199 ============ */
@media (min-width:992px) and (max-width:1199px){
  :root{--nav-w:88px;}
  .sidebar{padding:20px 12px;align-items:center;}
  .sidebar .nav{width:100%;}
  .side-head{justify-content:center;}
  .brand-text{display:none;}
  .nav-link{justify-content:center;padding:12px 0;}
  .nav-txt{
    position:absolute;width:1px;height:1px;padding:0;margin:-1px;
    overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
  }
  .side-note{display:none;}
  .side-foot .btn-block{padding:0 6px;font-size:13px;}
  .article-layout{grid-template-columns:minmax(0,1fr) 268px;gap:26px;}
  .paper{padding:40px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.4fr;gap:26px;}
}

/* ============ 断点：768–991 ============ */
@media (max-width:991px){
  .topbar{display:flex;}
  .sidebar{
    width:84vw;max-width:340px;z-index:80;
    transform:translateX(-100%);transition:transform .28s ease;
    padding:20px 18px;
  }
  .sidebar.is-open{transform:translateX(0);box-shadow:var(--shadow-float);}
  .side-close{display:inline-flex;}
  .brand-text{display:flex;}
  .page{margin-left:0;}
  .page-main{padding-top:84px;padding-bottom:56px;}
  :root{--sec:56px;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:26px;}
  .article-aside{position:static;gap:16px;}
  .toc{max-height:none;}
  .paper{padding:34px;max-width:none;}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
  .page-glow{width:460px;height:460px;top:-180px;right:-140px;}
}

/* ============ 断点：576–767 ============ */
@media (max-width:767px){
  :root{--sec:48px;}
  .article-title{font-size:clamp(23px,5.6vw,30px);}
  .paper{padding:26px 22px;border-radius:var(--r-md);}
  .prose h2{font-size:21px;margin-top:32px;}
  .prose h3{font-size:17.5px;}
  .prose table{font-size:14px;}
  .prose th,.prose td{padding:9px 10px;}
  .pager{grid-template-columns:minmax(0,1fr);}
  .pager-card.is-next{justify-content:flex-start;text-align:left;}
  .grid-3{grid-template-columns:minmax(0,1fr);}
  .section-head{flex-direction:column;align-items:flex-start;gap:6px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:24px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* ============ 断点：<576 ============ */
@media (max-width:575px){
  :root{--pad-x:16px;--sec:44px;--gap:16px;}
  body{font-size:15.5px;}
  .topbar{height:56px;padding:0 12px;}
  .page-main{padding-top:78px;}
  .brand-text strong{font-size:15px;}
  .brand-text em{font-size:10px;letter-spacing:.16em;}
  .article-head{max-width:none;}
  .meta-row{gap:6px 14px;font-size:13px;}
  .crumbs{font-size:13px;}
  .crumbs .current{max-width:180px;}
  .paper{padding:22px 18px;}
  .prose p{line-height:1.85;}
  .empty-state{padding:40px 20px;}
  .btn{width:100%;}
  .btn-sm{width:auto;}
  .pager-card{padding:14px 16px;}
  #footerSubForm{flex-direction:column;}
  #footerSubForm .btn-primary{width:100%;}
}

/* roulang page: category1 */
:root{
  --sky-void:#0E0B1E;
  --sky-deep:#171233;
  --sky-raise:#221A45;
  --sky-line:rgba(168,152,255,.16);
  --star-mint:#4FE0C0;
  --star-mint-deep:#2BB79A;
  --star-gold:#F0C46A;
  --comet-rose:#FF6B9A;
  --ink-100:#F2F0FA;
  --ink-70:#C3BEDC;
  --ink-45:#8E88AC;
  --paper:#F6F3EC;
  --paper-ink:#241F35;
  --paper-sub:#EDE8DC;
  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;
  --r-xs:10px;
  --r-pill:999px;
  --sh-card:0 18px 40px rgba(10,8,30,.55);
  --sh-pop:0 24px 60px rgba(6,4,20,.7);
  --sec-y:44px;
  --font-serif:'Noto Serif SC','Songti SC',Georgia,serif;
  --font-sans:'Noto Sans SC',system-ui,-apple-system,'PingFang SC','Microsoft YaHei',sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-70);
  background:var(--sky-void);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--ink-70);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--star-mint);text-decoration:underline;text-underline-offset:4px}
a:active{color:var(--star-mint-deep)}
button,input{font:inherit;color:inherit}
button{cursor:pointer}
h1,h2,h3,h4{font-family:var(--font-serif);color:var(--ink-100);margin:0;line-height:1.35;letter-spacing:-.01em}
p{margin:0 0 1.1em}
ul,ol{margin:0 0 1.2em;padding:0}
:focus-visible{outline:2px solid var(--star-mint);outline-offset:2px;border-radius:6px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 16px}
.shell{display:flex;flex-direction:column;min-height:100vh}
main{flex:1 1 auto}
.section{padding:var(--sec-y) 0}

/* ---------- 侧栏 / 顶栏 ---------- */
.sidebar{
  position:sticky;top:0;z-index:80;
  display:flex;align-items:center;
  height:60px;padding:0 16px;
  background:var(--sky-void);
  border-bottom:1px solid var(--sky-line);
}
.side-top{display:flex;align-items:center;justify-content:space-between;width:100%;gap:12px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand:hover{text-decoration:none}
.brand-mark{
  display:grid;place-items:center;flex:none;
  width:34px;height:34px;border-radius:12px;
  color:var(--star-mint);
  border:1px solid var(--sky-line);
  background:linear-gradient(150deg,rgba(79,224,192,.20),rgba(34,26,69,.92));
  box-shadow:var(--sh-card);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-family:var(--font-serif);font-size:15px;color:var(--ink-100);letter-spacing:.02em}
.brand-text em{font-style:normal;font-size:12px;color:var(--ink-45)}
.hamburger{
  display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;padding:0 11px;
  background:transparent;border:1px solid var(--sky-line);border-radius:var(--r-sm);
  transition:border-color .2s ease,background .2s ease;
}
.hamburger:hover{border-color:rgba(79,224,192,.5);background:rgba(79,224,192,.08)}
.hamburger span{display:block;height:2px;border-radius:2px;background:var(--ink-70)}
.sidebar .nav{display:none}
.side-foot{display:none}

.nav{display:flex;flex-direction:column;gap:4px}
.nav-link{
  position:relative;
  display:flex;align-items:center;gap:12px;
  min-height:44px;padding:10px 14px;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  color:var(--ink-70);
  font-size:15px;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.nav-link svg{flex:none}
.nav-link:hover{background:rgba(79,224,192,.07);color:var(--ink-100);text-decoration:none}
.nav-link.is-active{background:rgba(79,224,192,.08);color:var(--ink-100);border-color:var(--sky-line)}
.nav-link.is-active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:20px;border-radius:0 3px 3px 0;background:var(--star-mint);
}

/* 移动抽屉 */
.overlay{position:fixed;inset:0;z-index:90;background:rgba(10,8,30,.6);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease}
.overlay.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;left:0;bottom:0;z-index:95;
  width:84vw;max-width:340px;padding:20px 18px;
  background:var(--sky-deep);border-right:1px solid var(--sky-line);
  box-shadow:var(--sh-pop);
  transform:translateX(-102%);
  transition:transform .28s ease;
  display:flex;flex-direction:column;gap:20px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.drawer-close{
  width:44px;height:44px;border-radius:var(--r-sm);
  background:transparent;border:1px solid var(--sky-line);color:var(--ink-70);
  font-size:20px;line-height:1;
}
.drawer-close:hover{border-color:rgba(79,224,192,.5);color:var(--star-mint)}
.drawer .nav{margin-top:4px}
.drawer-foot{margin-top:auto;display:grid;gap:10px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:11px 22px;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  font-size:15px;font-weight:500;
  text-decoration:none;white-space:nowrap;
  transition:transform .18s ease,background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--star-mint);color:#0B2018;box-shadow:0 10px 24px rgba(79,224,192,.22)}
.btn-primary:hover{background:#63E7CA;color:#0B2018;transform:translateY(-1px);box-shadow:0 14px 30px rgba(79,224,192,.30);text-decoration:none}
.btn-primary:active{transform:translateY(0);background:var(--star-mint-deep)}
.btn-outline{border-color:rgba(79,224,192,.5);color:var(--star-mint);background:transparent}
.btn-outline:hover{background:rgba(79,224,192,.12);color:var(--star-mint);text-decoration:none}
.btn-outline:active{background:rgba(79,224,192,.2)}
.btn-ghost{background:transparent;color:var(--ink-70);padding:11px 8px}
.btn-ghost:hover{color:var(--star-mint);text-decoration:none}
.btn-ghost .arw{display:inline-block;transition:transform .18s ease}
.btn-ghost:hover .arw{transform:translateX(3px)}
.btn-block{width:100%}
.btn:disabled{opacity:.4;cursor:not-allowed;pointer-events:none}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12.5px;line-height:1.6;
  border:1px solid var(--sky-line);
  background:rgba(79,224,192,.10);
  color:var(--star-mint);
}
.badge-rose{border-color:rgba(255,107,154,.4);background:rgba(255,107,154,.12);color:var(--comet-rose)}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 10px;border-radius:var(--r-pill);
  font-size:12.5px;color:var(--ink-45);
  border:1px solid var(--sky-line);background:var(--sky-raise);
}

/* ---------- Hero 迷你版 ---------- */
.hero-mini{
  position:relative;overflow:hidden;
  min-height:38vh;
  display:flex;align-items:center;
  padding:clamp(30px,6vw,58px) 0;
  background-color:var(--sky-deep);
  background-image:linear-gradient(180deg,rgba(14,11,30,.86),rgba(14,11,30,.95)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--sky-line);
}
.hero-mini::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(242,240,250,.08) 1px,transparent 1px);
  background-size:26px 26px;
}
.hero-inner{position:relative;z-index:1;max-width:820px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-45);margin-bottom:16px}
.crumb a{color:var(--ink-45);padding:6px 0}
.crumb a:hover{color:var(--star-mint)}
.crumb .sep{color:rgba(142,136,172,.55)}
.hero-mini h1{font-size:clamp(28px,4.2vw,46px);line-height:1.25;margin:14px 0 14px}
.hero-lead{font-size:clamp(15px,1.5vw,17px);color:var(--ink-70);max-width:34em;margin:0}

/* ---------- 通用标题块 ---------- */
.sec-head{max-width:760px;margin-bottom:28px}
.sec-head h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:10px}
.sec-head p{color:var(--ink-45);font-size:15px;margin:0}
.eyebrow{display:block;font-size:13px;letter-spacing:.14em;color:var(--star-mint);margin-bottom:10px;font-family:var(--font-sans)}

/* ---------- 数据要点 ---------- */
.fact-row{display:grid;gap:14px;grid-template-columns:1fr}
.fact{
  padding:20px;border-radius:var(--r-md);
  border:1px solid var(--sky-line);
  background:var(--sky-deep);
  box-shadow:var(--sh-card);
}
.fact-num{
  display:block;font-weight:700;
  font-size:clamp(26px,3.4vw,36px);
  line-height:1.1;
  color:var(--star-gold);
  font-variant-numeric:tabular-nums;
}
.fact-num em{font-style:normal;font-size:14px;color:var(--ink-70);margin-left:5px;font-family:var(--font-sans)}
.fact-label{margin:10px 0 0;font-size:14px;color:var(--ink-45);line-height:1.7}

/* ---------- 长文区 ---------- */
.doc-grid{display:grid;gap:24px;grid-template-columns:1fr}
.toc{
  border:1px solid var(--sky-line);
  border-radius:var(--r-md);
  background:var(--sky-deep);
  padding:18px;
}
.toc h3{font-size:15px;margin-bottom:12px;color:var(--ink-100)}
.toc ul{list-style:none;padding:0;margin:0;display:grid;gap:4px}
.toc a{
  position:relative;display:block;padding:9px 12px 9px 16px;
  border-radius:var(--r-xs);
  font-size:14px;color:var(--ink-45);
  transition:background .2s ease,color .2s ease;
}
.toc a:hover{background:rgba(79,224,192,.07);color:var(--ink-100);text-decoration:none}
.toc a.is-active{color:var(--ink-100);background:rgba(79,224,192,.08)}
.toc a.is-active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:18px;border-radius:0 3px 3px 0;background:var(--star-mint);
}
.prose h2{
  position:relative;
  font-size:clamp(21px,2.3vw,26px);
  padding-left:16px;
  margin:40px 0 16px;
}
.prose h2:first-child{margin-top:0}
.prose h2::before{
  content:"";position:absolute;left:0;top:.38em;
  width:3px;height:1.05em;border-radius:2px;background:var(--star-mint);
}
.prose h3{font-size:19px;margin:26px 0 10px;color:var(--ink-100)}
.prose p{margin:0 0 1.15em;max-width:38em}
.prose ul{list-style:none;padding:0;display:grid;gap:10px;margin:0 0 1.3em}
.prose ul li{position:relative;padding-left:20px;max-width:38em}
.prose ul li::before{
  content:"";position:absolute;left:2px;top:.72em;
  width:7px;height:7px;border-radius:50%;background:var(--star-mint);
}
.prose ol{list-style:none;counter-reset:step;padding:0;margin:0 0 1.3em;display:grid;gap:10px}
.prose ol li{counter-increment:step;position:relative;padding-left:36px;max-width:38em}
.prose ol li::before{
  content:counter(step,decimal-leading-zero);
  position:absolute;left:0;top:.15em;
  font-size:14px;font-weight:700;color:var(--star-gold);
  font-variant-numeric:tabular-nums;
}
.prose strong{color:var(--ink-100);font-weight:600}

/* ---------- 步骤卡 ---------- */
.steps{display:grid;gap:16px;grid-template-columns:1fr}
.step{
  position:relative;
  padding:22px 20px;
  border-radius:var(--r-md);
  border:1px solid var(--sky-line);
  background:var(--sky-deep);
  box-shadow:var(--sh-card);
  transition:border-color .2s ease,transform .2s ease;
}
.step:hover{border-color:rgba(79,224,192,.4);transform:translateY(-3px)}
.step-no{
  display:inline-block;margin-bottom:12px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--star-gold);font-variant-numeric:tabular-nums;
}
.step h3{font-size:19px;margin:0 0 8px}
.step p{font-size:14.5px;color:var(--ink-45);margin:0}

/* ---------- 图文块 ---------- */
.media-block{
  display:grid;gap:22px;grid-template-columns:1fr;
  padding:20px;
  border-radius:var(--r-lg);
  border:1px solid var(--sky-line);
  background:var(--sky-deep);
  box-shadow:var(--sh-card);
  align-items:center;
}
.media-block img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-sm);
  background:var(--sky-raise);
}
.media-block h3{font-size:clamp(19px,2vw,23px);margin-bottom:12px}
.media-block p{font-size:15px;color:var(--ink-70);margin:0 0 1em}
.media-block p:last-of-type{margin-bottom:0}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--sky-line)}
.faq-item{border-bottom:1px solid var(--sky-line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:18px 4px;
  background:transparent;border:0;text-align:left;
  font-size:17px;font-weight:500;color:var(--ink-100);
  font-family:var(--font-sans);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--star-mint)}
.faq-arrow{flex:none;color:var(--ink-45);transition:transform .25s ease,color .25s ease}
.faq-q[aria-expanded="true"] .faq-arrow{transform:rotate(180deg);color:var(--star-mint)}
.faq-a{
  margin:0 0 16px;padding:16px 18px;
  border-radius:var(--r-sm);
  background:var(--sky-deep);
  border:1px solid var(--sky-line);
}
.faq-a p{margin:0;font-size:15px;color:var(--ink-70)}
.faq-a p+p{margin-top:.8em}

/* ---------- CTA 条 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  display:grid;gap:18px;grid-template-columns:1fr;
  padding:28px;
  border-radius:var(--r-lg);
  border:1px solid var(--sky-line);
  background:var(--sky-deep);
  box-shadow:var(--sh-card);
}
.cta-band::after{
  content:"";position:absolute;right:-90px;top:-120px;
  width:280px;height:280px;border-radius:50%;
  border:1px solid rgba(79,224,192,.22);
  box-shadow:0 0 0 10px rgba(240,196,106,.05);
  pointer-events:none;
}
.cta-band h2{font-size:clamp(21px,2.4vw,27px);margin-bottom:10px}
.cta-band p{margin:0;font-size:15px;color:var(--ink-45);max-width:40em}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;position:relative;z-index:1}
.text-link{color:var(--star-mint);display:inline-flex;align-items:center;gap:6px;min-height:44px}
.text-link:hover{color:var(--star-mint);text-decoration:underline}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:auto;
  border-top:1px solid var(--sky-line);
  background:var(--sky-deep);
  padding:48px 0 24px;
}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr}
.footer-brand p{font-size:14px;color:var(--ink-45);max-width:34ch;margin:14px 0 0}
.footer-col h4{font-size:15px;margin-bottom:14px}
.footer-col ul{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--ink-45);display:inline-block;padding:4px 0}
.footer-col a:hover{color:var(--star-mint)}
.footer-sub p{font-size:14px;color:var(--ink-45);margin:0}
.footer-sub form{display:flex;gap:8px;margin-top:14px;flex-wrap:wrap}
.footer-sub input{
  flex:1 1 140px;min-height:44px;padding:0 14px;
  border-radius:var(--r-xs);
  border:1px solid var(--sky-line);
  background:var(--sky-void);color:var(--ink-100);
  transition:border-color .2s ease;
}
.footer-sub input::placeholder{color:var(--ink-45)}
.footer-sub input:focus-visible{border-color:var(--star-mint)}
.footer-note{font-size:13px;color:var(--ink-45);min-height:20px;margin-top:10px}
.footer-note.is-ok{color:var(--star-mint)}
.footer-note.is-err{color:var(--comet-rose)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;
  margin-top:32px;padding-top:18px;
  border-top:1px solid var(--sky-line);
  font-size:13px;color:var(--ink-45);
}
.footer-bottom p{margin:0}

/* ---------- 断点 ---------- */
@media (min-width:576px){
  .container{padding:0 20px}
  .fact-row{grid-template-columns:repeat(3,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(3,minmax(0,1fr))}
  .btn-row{gap:14px}
  .cta-band{padding:32px}
}
@media (min-width:768px){
  :root{--sec-y:56px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .media-block{grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);padding:24px}
  .cta-band{grid-template-columns:1fr auto;align-items:center;padding:36px}
  .hero-mini{padding:56px 0}
}
@media (min-width:992px){
  :root{--sec-y:64px}
  .sidebar{
    position:fixed;top:0;left:0;bottom:0;z-index:80;
    width:240px;height:100vh;
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    padding:24px 18px 22px;
    border-right:1px solid var(--sky-line);border-bottom:0;
    overflow:visible;
  }
  .side-top{flex-direction:column;align-items:flex-start;gap:0;width:100%}
  .hamburger{display:none}
  .sidebar .nav{display:flex;margin-top:28px;width:100%}
  .side-foot{display:block;margin-top:auto;width:100%}
  .side-hint{font-size:12.5px;color:var(--ink-45);margin:12px 0 0;line-height:1.7}
  .drawer,.overlay{display:none}
  .shell{margin-left:240px}
  .hero-mini h1{margin-top:18px}
}
@media (min-width:992px) and (max-width:1199px){
  .sidebar{width:88px;padding:20px 10px;align-items:center}
  .side-top{align-items:center}
  .brand-text,.nav-txt,.side-foot .side-hint{display:none}
  .brand{gap:0}
  .sidebar .nav{width:100%;align-items:center}
  .nav-link{justify-content:center;padding:12px 0;position:relative;width:100%}
  .nav-link .nav-txt{
    position:absolute;left:74px;top:50%;transform:translateY(-50%);
    display:none;padding:7px 14px;border-radius:var(--r-xs);
    background:var(--sky-raise);border:1px solid var(--sky-line);
    color:var(--ink-100);font-size:14px;white-space:nowrap;z-index:70;
    box-shadow:var(--sh-pop);
  }
  .nav-link:hover .nav-txt,.nav-link:focus-visible .nav-txt{display:block}
  .nav-link.is-active::before{left:-10px}
  .side-foot .btn{padding-left:0;padding-right:0;font-size:14px}
  .shell{margin-left:88px}
}
@media (min-width:1200px){
  :root{--sec-y:72px}
  .doc-grid{grid-template-columns:220px minmax(0,1fr);gap:32px;align-items:start}
  .toc{position:sticky;top:96px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.4fr;gap:36px}
  .hero-mini{min-height:38vh}
}
@media (min-width:1440px){
  .container{max-width:1240px}
  .hero-inner{max-width:880px}
  .prose p,.prose ul li,.prose ol li{max-width:40em}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --sky-void:#0E0B1E;
  --sky-deep:#171233;
  --sky-raise:#221A45;
  --sky-line:rgba(168,152,255,.16);
  --star-mint:#4FE0C0;
  --star-mint-deep:#2BB79A;
  --star-gold:#F0C46A;
  --comet-rose:#FF6B9A;
  --ink-100:#F2F0FA;
  --ink-70:#C3BEDC;
  --ink-45:#8E88AC;
  --paper:#F6F3EC;
  --paper-ink:#241F35;
  --paper-sub:#EDE8DC;
  --r-lg:18px;
  --r-md:14px;
  --r-btn:12px;
  --r-in:10px;
  --r-pill:999px;
  --sh-card:0 18px 40px rgba(10,8,30,.55);
  --sh-pop:0 24px 60px rgba(6,4,20,.7);
  --sec-d:72px;
  --sec-t:56px;
  --sec-m:44px;
  --font-serif:"Noto Serif SC","Songti SC",serif;
  --font-sans:"Noto Sans SC",system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  background:var(--sky-void);
  color:var(--ink-70);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  min-height:100vh;
  overflow-x:hidden;
}
img{display:block;max-width:100%}
a{color:var(--ink-70);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--star-mint);text-decoration:underline;text-underline-offset:4px}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font-family:inherit;font-size:inherit}
ul,ol{list-style:none}
h1,h2,h3,h4{font-family:var(--font-serif);color:var(--ink-100);font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(32px,4.4vw,54px);line-height:1.2}
h2{font-size:clamp(24px,2.4vw,32px);line-height:1.35}
h3{font-size:19px;line-height:1.5}
:focus-visible{outline:2px solid var(--star-mint);outline-offset:2px;border-radius:4px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.tnum{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";font-weight:700}

/* ============ 左侧竖向导航 ============ */
.sidenav{
  position:fixed;
  top:0;left:0;bottom:0;
  width:240px;
  background:var(--sky-deep);
  border-right:1px solid var(--sky-line);
  display:flex;
  flex-direction:column;
  padding:24px 16px;
  z-index:40;
  transition:width .22s ease;
}
.sidenav-brand{display:flex;align-items:center;gap:10px;padding:6px 8px 22px;border-bottom:1px solid var(--sky-line)}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;flex:0 0 36px;border-radius:12px;
  background:var(--sky-raise);color:var(--star-mint);border:1px solid var(--sky-line);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;white-space:nowrap}
.brand-text strong{color:var(--ink-100);font-size:15px;letter-spacing:.02em}
.brand-text em{font-style:normal;font-size:12px;color:var(--ink-45);letter-spacing:.14em}
.nav{display:flex;flex-direction:column;gap:4px;margin-top:20px;flex:1}
.nav-link{
  position:relative;display:flex;align-items:center;gap:12px;
  min-height:46px;padding:0 12px;border-radius:12px;
  color:var(--ink-70);font-size:15px;white-space:nowrap;
  transition:background .18s ease,color .18s ease;
}
.nav-link:hover{background:rgba(79,224,192,.07);color:var(--ink-100);text-decoration:none}
.nav-link.is-active{background:rgba(79,224,192,.08);color:var(--ink-100)}
.nav-link.is-active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:3px;
  background:var(--star-mint);
}
.nav-link svg{flex:0 0 18px;color:var(--star-mint)}
.sidenav-foot{padding-top:16px;border-top:1px solid var(--sky-line)}
.side-note{font-size:12px;color:var(--ink-45);margin-top:10px;line-height:1.6}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:500;border:1px solid transparent;
  transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--star-mint);color:#0B1220;box-shadow:0 10px 24px rgba(79,224,192,.18)}
.btn-primary:hover{background:#63e7ca;color:#0B1220;text-decoration:none;transform:translateY(-1px);box-shadow:0 16px 32px rgba(79,224,192,.28)}
.btn-primary:active{transform:translateY(0);background:var(--star-mint-deep)}
.btn-outline{border-color:var(--star-mint);color:var(--star-mint);background:transparent}
.btn-outline:hover{background:rgba(79,224,192,.12);text-decoration:none;color:var(--star-mint)}
.btn-ghost{color:var(--star-mint);padding:0 4px;min-height:44px}
.btn-ghost:hover{text-decoration:none;color:var(--star-mint)}
.btn-ghost .arrow{display:inline-block;transition:transform .18s ease}
.btn-ghost:hover .arrow{transform:translateX(3px)}
.btn-block{width:100%}
.btn-sm{min-height:38px;padding:0 14px;font-size:14px;border-radius:10px}
.btn[disabled]{opacity:.4;pointer-events:none}

/* ============ 移动端顶栏与抽屉 ============ */
.mobilebar{display:none;position:fixed;top:0;left:0;right:0;height:60px;background:rgba(23,18,51,.94);border-bottom:1px solid var(--sky-line);z-index:60;align-items:center;justify-content:space-between;padding:0 16px;backdrop-filter:blur(6px)}
.mobilebar .brand{display:flex;align-items:center;gap:8px}
.mobilebar .brand-text strong{font-size:14px}
.mobilebar .brand-text em{font-size:10px}
.mobilebar-actions{display:flex;align-items:center;gap:8px}
.hamburger{width:44px;height:44px;display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;border-radius:10px;border:1px solid var(--sky-line)}
.hamburger span{display:block;width:18px;height:2px;background:var(--ink-100);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.drawer-mask{display:none;position:fixed;inset:0;background:rgba(10,8,30,.6);z-index:70}
.drawer-mask.is-open{display:block}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:84vw;max-width:340px;
  background:var(--sky-deep);border-right:1px solid var(--sky-line);
  padding:22px 16px;z-index:80;transform:translateX(-102%);
  transition:transform .26s ease;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer .nav{margin-top:14px}
.drawer-foot{padding-top:16px;border-top:1px solid var(--sky-line);margin-top:16px}

/* ============ 主内容区 ============ */
.main{margin-left:240px}

/* Hero 单行标题带 */
.hero-band{position:relative;padding:72px 0 48px;border-bottom:1px solid var(--sky-line);overflow:hidden}
.hero-band::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(79,224,192,.5),rgba(240,196,106,.45),transparent);
}
.hero-band .star-trail{
  position:absolute;top:34px;right:8%;width:220px;height:64px;
  border-top:1px solid rgba(168,152,255,.28);
  border-radius:50%/70% 70% 0 0;
  opacity:.7;pointer-events:none;
}
.hero-band .star-trail::before,
.hero-band .star-trail::after{
  content:"";position:absolute;width:6px;height:6px;border-radius:50%;background:var(--star-mint);
}
.hero-band .star-trail::before{left:-3px;top:-3px}
.hero-band .star-trail::after{right:-3px;top:-3px;background:var(--star-gold)}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-45);margin-bottom:18px}
.crumb a{color:var(--ink-45)}
.crumb a:hover{color:var(--star-mint)}
.crumb .sep{color:rgba(168,152,255,.4)}
.hero-band h1{max-width:18em}
.hero-lead{margin-top:16px;max-width:760px;color:var(--ink-70);font-size:16px}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:13px;line-height:1.5;border:1px solid var(--sky-line);
  background:rgba(34,26,69,.6);color:var(--ink-70);
}
.tag.is-mint{color:var(--star-mint);border-color:rgba(79,224,192,.35);background:rgba(79,224,192,.08)}
.tag.is-gold{color:var(--star-gold);border-color:rgba(240,196,106,.32);background:rgba(240,196,106,.08)}
.tag.is-live{color:var(--comet-rose);border-color:rgba(255,107,154,.4);background:rgba(255,107,154,.1)}

/* 通用板块 */
.section{padding:72px 0}
.section.alt{background:var(--sky-deep);border-top:1px solid var(--sky-line);border-bottom:1px solid var(--sky-line)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:36px}
.section-head h2{margin-bottom:8px}
.section-head p{color:var(--ink-45);font-size:14px;max-width:60ch}
.section-head .head-link{font-size:14px;color:var(--star-mint);white-space:nowrap}

/* 筛选 chips */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:40px}
.chip{
  min-height:40px;padding:0 16px;border-radius:var(--r-pill);
  border:1px solid var(--sky-line);background:rgba(34,26,69,.55);
  color:var(--ink-70);font-size:14px;display:inline-flex;align-items:center;
  transition:all .18s ease;
}
.chip:hover{color:var(--ink-100);border-color:rgba(79,224,192,.4);background:rgba(79,224,192,.08)}
.chip.is-active{background:var(--star-mint);color:#0B1220;border-color:var(--star-mint);font-weight:500}

/* ============ 时间轴 ============ */
.timeline{position:relative;padding:8px 0 4px}
.timeline::before{
  content:"";position:absolute;left:50%;top:0;bottom:0;width:2px;
  transform:translateX(-1px);
  background:linear-gradient(180deg,rgba(79,224,192,.05),rgba(168,152,255,.28),rgba(79,224,192,.05));
}
.tl-item{position:relative;display:grid;grid-template-columns:1fr 1fr;column-gap:64px;padding-bottom:36px}
.tl-item:last-child{padding-bottom:0}
.tl-node{
  position:absolute;left:50%;top:22px;width:14px;height:14px;border-radius:50%;
  background:var(--star-mint);transform:translateX(-50%);
  box-shadow:0 0 0 4px rgba(79,224,192,.18);
  border:3px solid var(--sky-void);
  z-index:2;
}
.tl-item:nth-child(odd) .tl-card{grid-column:1}
.tl-item:nth-child(even) .tl-card{grid-column:2}
.tl-card{
  background:var(--sky-deep);
  border:1px solid var(--sky-line);
  border-radius:var(--r-md);
  padding:20px 22px;
  box-shadow:var(--sh-card);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.tl-card:hover{transform:translateY(-3px);border-color:rgba(79,224,192,.3);box-shadow:var(--sh-pop)}
.tl-time{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--star-gold);font-size:14px;letter-spacing:.02em;margin-bottom:10px;
}
.tl-time .dot{width:6px;height:6px;border-radius:50%;background:var(--star-gold);display:inline-block}
.tl-card h3{margin-bottom:8px;font-size:19px}
.tl-card p{font-size:14px;color:var(--ink-70);line-height:1.8}
.tl-thumb{aspect-ratio:16/9;border-radius:12px;overflow:hidden;margin-bottom:14px;background:var(--sky-raise)}
.tl-thumb img{width:100%;height:100%;object-fit:cover}
.tl-foot{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:14px;padding-top:14px;border-top:1px solid var(--sky-line)}
.tl-foot .meta{font-size:13px;color:var(--ink-45)}
.tl-empty{display:none;padding:40px 24px;text-align:center;border:1px dashed var(--sky-line);border-radius:var(--r-md);color:var(--ink-45)}
.tl-empty .dotline{color:var(--star-mint);letter-spacing:.4em;display:block;margin-bottom:10px}

/* 总结块 */
.summary{display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:center}
.summary-card{background:var(--sky-raise);border:1px solid var(--sky-line);border-radius:var(--r-lg);padding:28px;box-shadow:var(--sh-card)}
.summary-card h2{margin-bottom:14px}
.summary-card p{font-size:15px;margin-bottom:12px}
.summary-figure{aspect-ratio:4/3;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--sky-line);background:var(--sky-raise)}
.summary-figure img{width:100%;height:100%;object-fit:cover}

/* CTA 条 */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--sky-deep);border-top:1px solid var(--sky-line);border-bottom:1px solid var(--sky-line);
}
.cta-band::before{
  content:"";position:absolute;left:-6%;top:-40%;width:60%;height:200%;
  border-radius:50%;border:1px solid rgba(79,224,192,.18);
  transform:rotate(-12deg);pointer-events:none;
}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;padding:56px 0;position:relative;z-index:1}
.cta-inner h2{font-size:clamp(22px,2.2vw,28px);max-width:24em;margin-bottom:8px}
.cta-inner p{font-size:14px;color:var(--ink-45)}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* FAQ */
.faq-list{border-top:1px solid var(--sky-line)}
.faq-item{border-bottom:1px solid var(--sky-line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:60px;padding:16px 4px;text-align:left;
  font-size:17px;font-weight:500;color:var(--ink-100);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--star-mint)}
.faq-q .caret{flex:0 0 18px;transition:transform .24s ease;color:var(--star-mint)}
.faq-item.is-open .faq-q .caret{transform:rotate(180deg)}
.faq-panel{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-panel-inner{padding:0 4px 22px;font-size:15px;color:var(--ink-70);background:var(--sky-deep);border-radius:0 0 12px 12px;max-width:80ch}

/* ============ 页脚 ============ */
.site-footer{background:var(--sky-deep);border-top:1px solid var(--sky-line);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:36px}
.footer-brand .brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand p{font-size:14px;color:var(--ink-45);max-width:34ch}
.footer-col h4{font-family:var(--font-sans);font-size:14px;color:var(--ink-100);margin-bottom:14px;letter-spacing:.04em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col ul a{font-size:14px;color:var(--ink-70);min-height:24px;display:inline-flex;align-items:center}
.footer-sub p{font-size:14px;color:var(--ink-45);margin-bottom:12px}
.footer-sub form{display:flex;gap:8px;flex-wrap:wrap}
.footer-sub input{
  flex:1 1 160px;min-height:44px;padding:0 14px;border-radius:var(--r-in);
  background:var(--sky-raise);border:1px solid var(--sky-line);color:var(--ink-100);
  transition:border-color .18s ease;
}
.footer-sub input::placeholder{color:var(--ink-45)}
.footer-sub input:focus{outline:none;border-color:var(--star-mint)}
.footer-note{font-size:13px;color:var(--star-mint);margin-top:10px;min-height:20px}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--sky-line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--ink-45);
}

/* 骨架占位 */
.skeleton{background:var(--sky-raise);animation:pulse 1.6s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:.65}50%{opacity:1}}

/* ============ 断点 ============ */
/* 992–1199：侧栏收窄为图标模式 */
@media (max-width:1199px){
  .sidenav{width:88px;padding:22px 12px}
  .sidenav .brand-text,
  .sidenav .nav-txt,
  .sidenav .side-note{display:none}
  .sidenav-brand{justify-content:center;padding:6px 0 18px}
  .nav-link{justify-content:center;padding:0 8px}
  .sidenav-foot{text-align:center}
  .sidenav-foot .btn{padding:0;font-size:13px}
  .main{margin-left:88px}
  .sidenav:hover{width:240px;box-shadow:var(--sh-pop)}
  .sidenav:hover .brand-text,
  .sidenav:hover .nav-txt,
  .sidenav:hover .side-note{display:block}
  .sidenav:hover .nav-link{justify-content:flex-start;padding:0 12px}
  .sidenav:hover .sidenav-foot .btn{padding:0 20px;font-size:15px}
  .summary{grid-template-columns:1fr;gap:24px}
}
/* 768–991：侧栏消失，顶部导航条 */
@media (max-width:991px){
  .sidenav{display:none}
  .mobilebar{display:flex}
  .main{margin-left:0;padding-top:60px}
  .section{padding:var(--sec-t) 0}
  .hero-band{padding:56px 0 40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-brand{grid-column:1 / -1}
  .footer-sub{grid-column:1 / -1}
  .timeline::before{left:50%}
}
/* 576–767 */
@media (max-width:767px){
  .container{padding:0 16px}
  .section{padding:var(--sec-m) 0}
  .hero-band{padding:44px 0 32px}
  .hero-band .star-trail{display:none}
  .timeline::before{left:9px}
  .tl-item{grid-template-columns:1fr;column-gap:0;padding-left:34px}
  .tl-item:nth-child(odd) .tl-card,
  .tl-item:nth-child(even) .tl-card{grid-column:1}
  .tl-node{left:9px;top:20px}
  .tl-card{padding:18px}
  .cta-inner{padding:44px 0;flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:6px}
}
/* <576 */
@media (max-width:575px){
  h1{font-size:28px}
  h2{font-size:22px}
  .hero-meta{gap:8px}
  .tag{font-size:12px;padding:4px 10px}
  .chips{gap:8px}
  .chip{font-size:13px;padding:0 12px;min-height:38px}
  .tl-item{padding-left:28px}
  .timeline::before{left:7px}
  .tl-node{left:7px}
  .summary-card{padding:20px}
  .faq-q{font-size:16px}
  .btn{width:100%}
  .faq-q .caret{flex:0 0 16px}
  .cta-actions{flex-direction:column}
}
/* ≥1440 */
@media (min-width:1440px){
  .sidenav{width:264px;padding:30px 20px}
  .main{margin-left:264px}
  .container{max-width:1280px}
  .section{padding:88px 0}
  .hero-band{padding:88px 0 56px}
  .tl-item{column-gap:80px}
}

/* roulang page: category3 */
:root{
  --sky-void:#0E0B1E;
  --sky-deep:#171233;
  --sky-raise:#221A45;
  --sky-line:rgba(168,152,255,.16);
  --star-mint:#4FE0C0;
  --star-mint-deep:#2BB79A;
  --star-gold:#F0C46A;
  --comet-rose:#FF6B9A;
  --ink-100:#F2F0FA;
  --ink-70:#C3BEDC;
  --ink-45:#8E88AC;
  --paper:#F6F3EC;
  --paper-ink:#241F35;
  --paper-sub:#EDE8DC;
  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;
  --r-xs:10px;
  --sh-card:0 18px 40px rgba(10,8,30,.55);
  --sh-float:0 24px 60px rgba(6,4,20,.7);
  --sec:72px;
  --font-serif:'Noto Serif SC','Songti SC',Georgia,serif;
  --font-sans:'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;
  background:var(--sky-void);
  color:var(--ink-70);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--ink-70);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--star-mint)}
h1,h2,h3,h4{font-family:var(--font-serif);color:var(--ink-100);margin:0;letter-spacing:-.01em;font-weight:700}
h1{font-size:clamp(30px,4.2vw,50px);line-height:1.22}
h2{font-size:clamp(24px,2.8vw,32px);line-height:1.35}
h3{font-size:19px;line-height:1.5}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--star-mint);outline-offset:2px;border-radius:4px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.starfield{
  background-image:radial-gradient(circle,rgba(242,240,250,.5) 1px,transparent 1px);
  background-size:46px 46px;
  opacity:.055;
  pointer-events:none;
}

/* ===== 左侧竖向导航 ===== */
.side{
  position:fixed;
  top:0;left:0;bottom:0;
  width:240px;
  background:var(--sky-deep);
  border-right:1px solid var(--sky-line);
  display:flex;
  flex-direction:column;
  gap:22px;
  padding:26px 16px 20px;
  z-index:70;
  transition:width .25s ease,padding .25s ease;
}
.brand{
  display:flex;align-items:center;gap:10px;
  padding:6px 8px;border-radius:var(--r-sm);
}
.brand:hover{color:var(--ink-100)}
.brand-mark{
  flex:0 0 38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  color:var(--star-mint);
  background:linear-gradient(150deg,var(--sky-raise),rgba(79,224,192,.14));
  border:1px solid var(--sky-line);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-family:var(--font-serif);font-size:17px;color:var(--ink-100)}
.brand-text em{font-style:normal;font-size:12px;letter-spacing:.14em;color:var(--ink-45)}
.nav{display:flex;flex-direction:column;gap:4px}
.nav-link{
  position:relative;
  display:flex;align-items:center;gap:12px;
  min-height:44px;
  padding:11px 12px;
  border-radius:var(--r-sm);
  color:var(--ink-70);
  font-size:15px;
  transition:background .2s ease,color .2s ease;
}
.nav-link svg{flex:0 0 18px;color:var(--ink-45);transition:color .2s ease}
.nav-link:hover{background:rgba(168,152,255,.07);color:var(--ink-100)}
.nav-link:hover svg{color:var(--star-mint)}
.nav-link.is-active{background:rgba(79,224,192,.08);color:var(--ink-100);font-weight:500}
.nav-link.is-active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:0 3px 3px 0;background:var(--star-mint);
}
.nav-link.is-active svg{color:var(--star-mint)}
.nav-txt{white-space:nowrap;transition:opacity .2s ease}
.side-foot{margin-top:auto;display:flex;flex-direction:column;gap:10px}
.side-note{margin:0;font-size:13px;line-height:1.7;color:var(--ink-45)}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 22px;
  border-radius:var(--r-sm);border:1px solid transparent;
  font-size:15px;font-weight:500;cursor:pointer;
  transition:background .2s ease,color .2s ease,transform .18s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--star-mint);color:#08201B;font-weight:700}
.btn-primary:hover{background:#63e7c9;color:#08201B;transform:translateY(-1px);box-shadow:0 12px 26px rgba(79,224,192,.24)}
.btn-primary:active{transform:translateY(0);background:var(--star-mint-deep);color:#062019}
.btn-ghost{background:transparent;border-color:var(--sky-line);color:var(--ink-100)}
.btn-ghost:hover{border-color:var(--star-mint);color:var(--star-mint);background:rgba(79,224,192,.08)}
.btn-outline{background:transparent;border-color:var(--star-mint);color:var(--star-mint)}
.btn-outline:hover{background:rgba(79,224,192,.12);color:var(--star-mint)}
.btn-text{background:none;border:none;padding:6px 0;min-height:auto;color:var(--star-mint);font-weight:500}
.btn-text .arrow{display:inline-block;transition:transform .2s ease}
.btn-text:hover .arrow{transform:translateX(3px)}
.btn-block{width:100%}
.btn-sm{min-height:38px;padding:8px 16px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none}

/* ===== 移动端顶栏与抽屉 ===== */
.topbar{
  position:fixed;top:0;left:0;right:0;height:60px;
  display:none;align-items:center;justify-content:space-between;
  padding:0 16px;
  background:rgba(23,18,51,.96);
  border-bottom:1px solid var(--sky-line);
  z-index:80;
}
.topbar .brand{padding:0}
.brand-sm .brand-mark{flex:0 0 32px;height:32px;border-radius:10px}
.brand-sm .brand-text strong{font-size:15px}
.topbar-actions{display:flex;align-items:center;gap:10px}
.hamburger{
  width:44px;height:44px;border:1px solid var(--sky-line);background:transparent;
  border-radius:var(--r-sm);display:grid;place-content:center;gap:4px;cursor:pointer;
}
.hamburger span{display:block;width:18px;height:2px;background:var(--ink-100);border-radius:2px}
.overlay{position:fixed;inset:0;background:rgba(10,8,30,.6);z-index:85}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:84vw;max-width:320px;
  background:var(--sky-deep);border-right:1px solid var(--sky-line);
  padding:22px 16px;display:flex;flex-direction:column;gap:18px;
  transform:translateX(-100%);transition:transform .28s ease;z-index:90;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer .btn-block{margin-top:auto}

/* ===== 主体骨架 ===== */
.shell{margin-left:240px}
main{display:block}
.section{padding:var(--sec) 0}
.section-alt{background:var(--sky-deep);border-top:1px solid var(--sky-line);border-bottom:1px solid var(--sky-line)}
.sec-head{max-width:760px;margin-bottom:34px}
.sec-head .kicker{
  display:inline-block;margin-bottom:12px;padding:4px 12px;border-radius:999px;
  font-size:13px;letter-spacing:.08em;color:var(--star-mint);
  background:rgba(79,224,192,.1);border:1px solid rgba(79,224,192,.28);
}
.sec-head p{margin-top:12px;color:var(--ink-70)}

/* ===== Hero 迷你版 ===== */
.hero-min{
  position:relative;min-height:38vh;
  display:flex;align-items:flex-end;
  padding:96px 0 48px;
  overflow:hidden;
  border-bottom:1px solid var(--sky-line);
}
.hero-min-bg{
  position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(14,11,30,.7),rgba(14,11,30,.94)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.hero-min-bg::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(circle,rgba(242,240,250,.5) 1px,transparent 1px);
  background-size:46px 46px;opacity:.07;
}
.hero-min-inner{position:relative;z-index:2}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-45);margin:0 0 18px}
.crumb a{color:var(--ink-45)}
.crumb a:hover{color:var(--star-mint)}
.crumb-cur{color:var(--ink-100)}
.tag{
  display:inline-block;margin-bottom:14px;padding:4px 12px;border-radius:999px;
  font-size:13px;color:var(--star-gold);
  background:rgba(240,196,106,.12);border:1px solid rgba(240,196,106,.32);
}
.hero-sub{margin:16px 0 0;font-size:17px;color:var(--star-mint);font-weight:500}
.hero-lead{max-width:640px;margin-top:14px;color:var(--ink-70)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}

/* ===== 数字概览 ===== */
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.stat{
  padding:22px;border-radius:var(--r-md);
  background:var(--sky-raise);border:1px solid var(--sky-line);
  box-shadow:var(--sh-card);
}
.stat b{
  display:block;font-family:var(--font-serif);font-size:30px;color:var(--star-gold);
  font-variant-numeric:tabular-nums;letter-spacing:.01em;
}
.stat span{display:block;margin-top:6px;font-size:14px;color:var(--ink-45)}

/* ===== 错位双栏卡片 ===== */
.stagger{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}
.stagger-col{display:flex;flex-direction:column;gap:24px}
.stagger-col.is-offset{transform:translateY(32px)}
.f-card{
  padding:24px;border-radius:var(--r-lg);
  background:var(--sky-raise);border:1px solid var(--sky-line);
  box-shadow:var(--sh-card);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.f-card:hover{transform:translateY(-3px);border-color:rgba(79,224,192,.3);box-shadow:var(--sh-float)}
.f-ico{
  width:44px;height:44px;border-radius:var(--r-sm);display:grid;place-items:center;
  color:var(--star-mint);background:rgba(79,224,192,.1);
  border:1px solid rgba(79,224,192,.26);margin-bottom:16px;
}
.f-card h3{margin-bottom:10px}
.f-card p{font-size:15px;color:var(--ink-70)}

/* ===== 对比表 ===== */
.table-wrap{
  overflow-x:auto;border-radius:var(--r-lg);
  border:1px solid var(--sky-line);background:var(--sky-deep);
  box-shadow:var(--sh-card);
}
table.compare{width:100%;min-width:560px;border-collapse:collapse;font-size:15px}
table.compare caption{
  text-align:left;padding:20px 24px 4px;font-family:var(--font-serif);
  color:var(--ink-100);font-size:18px;
}
table.compare th,table.compare td{
  text-align:left;padding:16px 24px;border-bottom:1px solid var(--sky-line);
  vertical-align:top;
}
table.compare thead th{color:var(--star-mint);font-weight:500;font-size:14px;letter-spacing:.04em}
table.compare tbody tr:nth-child(odd){background:rgba(34,26,69,.45)}
table.compare tbody tr:last-child td{border-bottom:none}
table.compare td:first-child{color:var(--ink-100);font-weight:500;white-space:nowrap}
table.compare td{color:var(--ink-70)}

/* ===== 表单卡 ===== */
.check-card{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);
  gap:0;border-radius:var(--r-lg);overflow:hidden;
  background:var(--sky-raise);border:1px solid var(--sky-line);box-shadow:var(--sh-card);
}
.check-media{position:relative;min-height:260px;background:var(--sky-raise)}
.check-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.check-body{padding:28px}
.check-body h2{font-size:24px;margin-bottom:10px}
.check-body p{font-size:15px}
.field{margin-top:16px}
.field label{display:block;font-size:13px;color:var(--ink-45);margin-bottom:8px}
.field input[type="text"]{
  width:100%;min-height:46px;padding:11px 14px;
  background:var(--sky-deep);border:1px solid var(--sky-line);
  border-radius:var(--r-xs);color:var(--ink-100);font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field input::placeholder{color:var(--ink-45)}
.field input:focus{outline:none;border-color:var(--star-mint);box-shadow:0 0 0 3px rgba(79,224,192,.16)}
.field.is-error input{border-color:var(--comet-rose)}
.agree{display:flex;align-items:flex-start;gap:10px;margin-top:14px;font-size:13px;color:var(--ink-45)}
.agree input{width:16px;height:16px;margin-top:4px;accent-color:var(--star-mint)}
.form-msg{margin-top:12px;font-size:13px;min-height:20px}
.form-msg.is-error{color:var(--comet-rose)}
.form-msg.is-ok{color:var(--star-mint)}

/* ===== CTA 条 ===== */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);border:1px solid var(--sky-line);
  background:var(--sky-deep);box-shadow:var(--sh-card);
}
.cta-band::before{
  content:"";position:absolute;left:-60px;top:-60px;width:340px;height:340px;
  border:1px solid var(--sky-line);border-radius:50%;
}
.cta-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,340px);
  gap:32px;align-items:center;padding:36px;
}
.cta-inner h2{font-size:26px;margin-bottom:10px}
.cta-inner p{font-size:15px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.cta-media img{border-radius:var(--r-md);aspect-ratio:16/10;object-fit:cover;width:100%}

/* ===== FAQ ===== */
.faq{border-top:1px solid var(--sky-line)}
.faq-item{border-bottom:1px solid var(--sky-line)}
.faq-q{
  width:100%;min-height:60px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 4px;background:none;border:none;text-align:left;cursor:pointer;
  font-size:17px;font-weight:500;color:var(--ink-100);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--star-mint)}
.faq-ico{
  flex:0 0 22px;height:22px;display:grid;place-items:center;color:var(--star-mint);
  transition:transform .25s ease;font-size:18px;line-height:1;
}
.faq-q[aria-expanded="true"] .faq-ico{transform:rotate(180deg)}
.faq-p{background:var(--sky-deep);border-radius:var(--r-sm);padding:0 18px 18px;margin-bottom:16px}
.faq-p p{font-size:15px;color:var(--ink-70);padding-top:14px}

/* ===== 页脚 ===== */
.site-footer{background:var(--sky-deep);border-top:1px solid var(--sky-line);padding:56px 0 24px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:32px}
.footer-brand .brand{padding:0;margin-bottom:14px}
.footer-brand p{font-size:14px;color:var(--ink-45);max-width:320px}
.footer-col h4{font-size:15px;color:var(--ink-100);margin-bottom:14px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li a{font-size:14px;color:var(--ink-70)}
.footer-col li a:hover{color:var(--star-mint)}
.footer-sub p{font-size:14px;color:var(--ink-45)}
.footer-sub form{display:flex;gap:10px;margin-top:14px}
.footer-sub input{
  flex:1 1 auto;min-width:0;min-height:44px;padding:10px 14px;
  background:var(--sky-void);border:1px solid var(--sky-line);border-radius:var(--r-xs);
  color:var(--ink-100);font-size:14px;
}
.footer-sub input:focus{outline:none;border-color:var(--star-mint);box-shadow:0 0 0 3px rgba(79,224,192,.16)}
.footer-sub .btn{min-height:44px}
.footer-note{margin-top:10px;font-size:13px;color:var(--star-mint);min-height:18px}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--sky-line);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
}
.footer-bottom p{margin:0;font-size:13px;color:var(--ink-45)}

/* ===== 断点 ===== */
@media (min-width:1440px){
  .container{max-width:1280px}
  .cta-inner{padding:44px}
}
@media (max-width:1199px) and (min-width:992px){
  .side{width:88px;padding:20px 10px;gap:18px}
  .side .brand{justify-content:center;padding:6px 0}
  .side .brand-text{display:none}
  .side .nav-link{justify-content:center;padding:11px 0}
  .side .nav-txt{opacity:0;width:0;overflow:hidden}
  .side .side-note{display:none}
  .side .btn{padding:11px 8px;font-size:14px}
  .side:hover{width:240px;padding:26px 16px;box-shadow:var(--sh-float)}
  .side:hover .brand-text{display:flex}
  .side:hover .nav-link{justify-content:flex-start;padding:11px 12px}
  .side:hover .nav-txt{opacity:1;width:auto}
  .side:hover .side-note{display:block}
  .shell{margin-left:88px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:991px){
  .side{display:none}
  .topbar{display:flex}
  .shell{margin-left:0;padding-top:60px}
  .hero-min{padding:64px 0 40px;min-height:auto}
  .stat-grid{grid-template-columns:1fr;gap:16px}
  .stagger{grid-template-columns:1fr;gap:20px}
  .stagger-col.is-offset{transform:none}
  .check-card{grid-template-columns:1fr}
  .check-media{min-height:200px;order:-1}
  .cta-inner{grid-template-columns:1fr;padding:28px}
  .cta-media{order:-1}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .section{padding:56px 0}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .hero-lead{font-size:15px}
  .hero-actions{gap:10px}
  .hero-actions .btn{flex:1 1 46%}
  .check-body{padding:22px}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .section{padding:52px 0}
  .faq-q{font-size:16px}
}
@media (max-width:575px){
  body{font-size:15px}
  .container{padding:0 16px}
  h1{font-size:clamp(25px,7.4vw,32px)}
  h2{font-size:22px}
  .hero-min{padding:44px 0 32px}
  .hero-actions .btn{flex:1 1 100%}
  .stat{padding:18px}
  .f-card{padding:20px}
  .table-wrap{border-radius:var(--r-md)}
  table.compare th,table.compare td{padding:14px 16px}
  .cta-inner{padding:22px}
  .footer-sub form{flex-direction:column}
  .footer-sub .btn{width:100%}
  .section{padding:44px 0}
}