/* roulang page: index */
:root{
  --brand-900:#0B2B24;
  --brand-700:#134A3C;
  --brand-500:#1F7A5F;
  --accent-500:#FF5A1F;
  --accent-050:#FFE7DC;
  --paper:#FAF8F4;
  --paper-2:#F1EDE6;
  --line:#E2DCD2;
  --text-1:#14201C;
  --text-2:#5A6660;
  --white:#FFFFFF;
  --danger:#C0392B;
  --radius-card:18px;
  --radius-btn:12px;
  --radius-input:10px;
  --shadow-1:0 1px 2px rgba(11,43,36,.06),0 8px 24px -12px rgba(11,43,36,.16);
  --shadow-2:0 18px 40px -18px rgba(11,43,36,.28);
  --container:1200px;
  --font-cn:-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-num:ui-monospace,SFMono-Regular,Menlo,Consolas,"Inter",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand-500);text-decoration:none;transition:color .22s ease}
a:hover{color:var(--brand-700)}
button{font-family:inherit;cursor:pointer}
input,select,textarea{font-family:inherit;font-size:16px}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding-left:22px}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--paper2{background:var(--paper-2)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head .eyebrow{
  display:inline-block;font-size:13px;letter-spacing:.16em;color:var(--brand-500);
  text-transform:uppercase;margin-bottom:14px;font-family:var(--font-num);
}
.section-head h2{
  font-size:clamp(24px,3.4vw,36px);line-height:1.25;font-weight:700;letter-spacing:-.01em;color:var(--text-1);
}
.section-head p{margin-top:16px;color:var(--text-2);font-size:16px;line-height:1.85}
.lead{font-size:18px;line-height:1.85;color:var(--text-2)}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:120;background:var(--white);
  border-bottom:1px solid var(--line);transition:box-shadow .28s ease;
}
.site-header.is-stuck{box-shadow:var(--shadow-1)}
.header-inner{
  height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.logo{display:flex;align-items:center;gap:12px;color:var(--text-1);font-weight:800;font-size:18px;letter-spacing:-.01em}
.logo:hover{color:var(--brand-700)}
.logo-mark{
  width:34px;height:34px;border-radius:10px;background:var(--brand-700);
  color:var(--white);display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:800;letter-spacing:0;flex:0 0 auto;
}
.logo-text small{display:block;font-size:11px;font-weight:500;color:var(--text-2);letter-spacing:.14em;line-height:1.2}
.nav{display:flex;align-items:center;gap:6px}
.nav a{
  position:relative;display:block;padding:10px 14px;color:var(--text-1);
  font-size:15px;font-weight:500;border-radius:8px;
}
.nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--accent-500);transform:scaleX(0);transform-origin:left center;
  transition:transform .22s ease;
}
.nav a:hover{color:var(--brand-700)}
.nav a:hover::after{transform:scaleX(1)}
.nav a.is-active{color:var(--brand-700);font-weight:700}
.nav a.is-active::after{transform:scaleX(1)}
.header-cta{display:flex;align-items:center;gap:12px}
.burger{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--white);
  border-radius:10px;align-items:center;justify-content:center;
}
.burger span{display:block;width:18px;height:2px;background:var(--text-1);position:relative}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text-1);
}
.burger span::before{top:-6px}
.burger span::after{top:6px}

/* drawer */
.drawer{
  position:fixed;inset:0;background:var(--paper);z-index:200;
  display:flex;flex-direction:column;padding:0 24px 24px;
  transform:translateX(100%);transition:transform .32s cubic-bezier(.22,.61,.36,1);
  visibility:hidden;
}
.drawer.is-open{transform:translateX(0);visibility:visible}
.drawer-top{height:60px;display:flex;align-items:center;justify-content:space-between;flex:0 0 auto}
.drawer-close{
  width:44px;height:44px;border:1px solid var(--line);background:var(--white);border-radius:10px;
  font-size:20px;line-height:1;color:var(--text-1);
}
.drawer-nav{flex:1 1 auto;display:flex;flex-direction:column;justify-content:center;gap:2px}
.drawer-nav a{
  font-size:18px;line-height:56px;color:var(--text-1);border-bottom:1px solid var(--line);font-weight:600;
}
.drawer-nav a.is-active{color:var(--brand-700)}
.drawer-cta{flex:0 0 auto;padding-top:20px}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1.5px solid transparent;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;padding:0 22px;height:46px;line-height:1;
  transition:transform .22s ease,background-color .22s ease,color .22s ease,border-color .22s ease,box-shadow .22s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--accent-500);color:var(--white)}
.btn-primary:hover{background:#E84B12;color:var(--white);transform:translateY(-1px);box-shadow:var(--shadow-1)}
.btn-secondary{background:transparent;border-color:var(--brand-700);color:var(--brand-700)}
.btn-secondary:hover{background:var(--brand-700);color:var(--white);transform:translateY(-1px)}
.btn-ghost{
  background:transparent;color:var(--brand-700);padding:0 4px;height:auto;
}
.btn-ghost .arrow{transition:transform .22s ease;display:inline-block}
.btn-ghost:hover .arrow{transform:translateX(4px)}
.btn-light{background:var(--accent-500);color:var(--white)}
.btn-light:hover{background:#E84B12;color:var(--white);transform:translateY(-1px)}
.btn-sm{height:36px;font-size:14px;padding:0 16px}
.btn-lg{height:54px;font-size:16px;padding:0 28px}
.btn-block{width:100%}

/* ============ badge ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;background:var(--accent-050);color:#B33A0C;
  border-radius:999px;padding:4px 12px;font-size:12px;font-weight:700;line-height:1.6;
}
.badge--plain{background:rgba(255,255,255,.16);color:var(--white)}
.tag{
  display:inline-flex;align-items:center;background:var(--paper-2);color:var(--text-2);
  border:1px solid var(--line);border-radius:999px;padding:5px 12px;font-size:13px;line-height:1.5;
}

/* ============ hero ============ */
.hero{
  position:relative;background:var(--brand-900);color:var(--white);overflow:hidden;
  padding:84px 0 72px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(105deg,rgba(11,43,36,.96) 0%,rgba(11,43,36,.86) 46%,rgba(11,43,36,.62) 100%),url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
}
.hero::after{
  content:"";position:absolute;inset:0;opacity:.06;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.9) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.9) 1px,transparent 1px);
  background-size:56px 56px;
}
.hero .container{position:relative;z-index:2}
.hero-grid{
  display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;
}
.hero-kicker{
  display:inline-flex;align-items:center;gap:10px;font-size:13px;font-family:var(--font-num);
  letter-spacing:.14em;color:var(--accent-050);margin-bottom:20px;
}
.hero-kicker i{width:22px;height:1px;background:var(--accent-500);display:block}
.hero h1{
  font-size:clamp(30px,6vw,52px);line-height:1.15;font-weight:800;letter-spacing:-.02em;color:var(--white);
}
.hero h1 em{font-style:normal;color:var(--accent-500)}
.hero-sub{
  margin-top:20px;font-size:18px;line-height:1.8;color:rgba(255,255,255,.82);max-width:560px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-actions .btn-secondary{border-color:rgba(255,255,255,.42);color:var(--white)}
.hero-actions .btn-secondary:hover{background:var(--white);color:var(--brand-900);border-color:var(--white)}
.hero-card{
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-2);
  border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.04);
}
.hero-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-card-note{padding:16px 18px;font-size:13px;color:rgba(255,255,255,.72);line-height:1.7}
.hero-stats{
  margin-top:56px;display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  border-top:1px solid rgba(255,255,255,.16);
}
.hero-stats div{padding:22px 22px 0 0}
.hero-stats strong{
  display:block;font-family:var(--font-num);font-size:clamp(22px,3vw,30px);font-weight:700;
  color:var(--white);letter-spacing:-.01em;
}
.hero-stats span{display:block;font-size:13px;color:rgba(255,255,255,.66);margin-top:6px}

/* ============ brand claim ============ */
.claim-grid{display:grid;grid-template-columns:200px 1fr;gap:56px;align-items:start}
.vlabel{
  writing-mode:vertical-rl;letter-spacing:.32em;font-size:13px;color:var(--brand-500);
  font-family:var(--font-num);padding:6px 0;
}
.claim-list{display:flex;flex-direction:column}
.claim-item{
  display:grid;grid-template-columns:88px 1fr;gap:28px;padding:30px 0;border-top:1px solid var(--line);
}
.claim-item:last-child{border-bottom:1px solid var(--line)}
.claim-num{
  font-family:var(--font-num);font-size:34px;font-weight:700;color:var(--brand-500);opacity:.28;line-height:1;
}
.claim-item h3{font-size:20px;font-weight:700;line-height:1.4;margin-bottom:10px;color:var(--text-1)}
.claim-item p{color:var(--text-2);font-size:16px;max-width:720px}
.claim-item:nth-child(2){padding-left:36px}
.claim-item:nth-child(3){padding-left:72px}

/* ============ story ============ */
.story-grid{display:grid;grid-template-columns:6fr 6fr;gap:56px;align-items:center}
.story-media{border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1)}
.story-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s cubic-bezier(.22,.61,.36,1)}
.story-media:hover img{transform:scale(1.03)}
.story-body h2{font-size:clamp(24px,3.4vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.01em}
.story-body p{margin-top:18px;color:var(--text-2)}
.timeline{margin-top:32px;border-left:1px solid var(--line);padding-left:24px;display:flex;flex-direction:column;gap:20px}
.timeline li{list-style:none;position:relative}
.timeline li::before{
  content:"";position:absolute;left:-29px;top:11px;width:9px;height:9px;border-radius:50%;
  background:var(--paper);border:2px solid var(--brand-500);
}
.timeline b{font-family:var(--font-num);font-size:14px;color:var(--brand-700);display:block}
.timeline span{font-size:15px;color:var(--text-2)}
.timeline ul{padding-left:0;margin:0}

/* ============ grid cards ============ */
.card-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.card:hover{transform:translateY(-4px);border-color:var(--brand-500);box-shadow:var(--shadow-2)}
.card-cover{display:block;overflow:hidden}
.card-cover img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s cubic-bezier(.22,.61,.36,1)}
.card:hover .card-cover img{transform:scale(1.03)}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto}
.card-body h3{font-size:19px;line-height:1.4;font-weight:700}
.card-body h3 a{color:var(--text-1)}
.card-body h3 a:hover{color:var(--brand-700)}
.card-body p{font-size:14.5px;line-height:1.7;color:var(--text-2)}
.card-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.card-foot time{font-family:var(--font-num);font-size:13px;color:var(--text-2)}
.card--lg{grid-column:span 8}
.card--md{grid-column:span 4}
.card--sm{grid-column:span 4}
.card--lg .card-body h3{font-size:24px}
.card--lg .card-body p{font-size:15.5px}
.card--wide{grid-column:span 6}

/* ============ trust ============ */
.trust-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:52px}
.trust-stats .item{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 24px;box-shadow:var(--shadow-1);
}
.trust-stats strong{font-family:var(--font-num);font-size:34px;font-weight:700;color:var(--brand-700);display:block;letter-spacing:-.02em}
.trust-stats span{display:block;font-size:14px;color:var(--text-2);margin-top:8px}
.partner-wall{
  display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;margin-bottom:52px;
}
.partner-wall div{
  background:var(--white);padding:26px 12px;text-align:center;font-size:14px;font-weight:700;
  color:var(--text-2);filter:grayscale(1);opacity:.72;transition:filter .28s ease,opacity .28s ease,color .28s ease;
}
.partner-wall div:hover{filter:grayscale(0);opacity:1;color:var(--brand-700)}
.quotes{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.quote{
  background:var(--white);border:1px solid var(--line);border-left:3px solid var(--brand-700);
  border-radius:14px;padding:24px;box-shadow:var(--shadow-1);
}
.quote p{font-size:15px;color:var(--text-1);line-height:1.8}
.quote footer{margin-top:16px;font-size:13px;color:var(--text-2)}
.quote footer b{color:var(--brand-700)}

/* ============ CMS news ============ */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.news-list{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.news-card{
  display:flex;gap:20px;background:var(--white);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:18px;box-shadow:var(--shadow-1);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;color:var(--text-1);
}
.news-card:hover{transform:translateY(-4px);border-color:var(--brand-500);box-shadow:var(--shadow-2);color:var(--text-1)}
.news-thumb{flex:0 0 200px;border-radius:12px;overflow:hidden}
.news-thumb img{width:100%;height:100%;min-height:126px;aspect-ratio:16/10;object-fit:cover}
.news-body{display:flex;flex-direction:column;gap:10px;min-width:0}
.news-body h3{font-size:17px;line-height:1.4;font-weight:700;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{font-size:14px;line-height:1.7;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:auto;display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text-2)}
.news-meta time{font-family:var(--font-num)}
.empty-state{
  min-height:200px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  border:1px dashed var(--line);border-radius:var(--radius-card);background:var(--white);color:var(--text-2);
  text-align:center;padding:32px;
}
.empty-state svg{opacity:.5}
.skeleton{height:1px;background:var(--line);border-radius:1px}

/* ============ FAQ ============ */
.faq{border-top:1px solid var(--line);max-width:860px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;background:none;border:0;padding:22px 44px 22px 0;text-align:left;
  font-size:17px;font-weight:700;color:var(--text-1);position:relative;line-height:1.5;
}
.faq-q::after{
  content:"";position:absolute;right:6px;top:50%;width:14px;height:14px;transform:translateY(-50%);
  background:
    linear-gradient(var(--brand-700),var(--brand-700)) center/14px 1.6px no-repeat,
    linear-gradient(var(--brand-700),var(--brand-700)) center/1.6px 14px no-repeat;
  transition:transform .28s ease;
}
.faq-item.is-open .faq-q::after{transform:translateY(-50%) rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s cubic-bezier(.22,.61,.36,1)}
.faq-a p{padding:0 44px 22px 0;font-size:15px;line-height:1.8;color:var(--text-2)}
.faq-item.is-open .faq-a{max-height:320px}

/* ============ CTA band ============ */
.cta-band{background:var(--brand-900);color:var(--white);position:relative;overflow:hidden}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.14;
  background:url("/assets/images/backpic/back-3.png") center/cover no-repeat;
}
.cta-inner{
  position:relative;z-index:2;display:grid;grid-template-columns:6fr 5fr;gap:56px;align-items:center;
  padding:80px 0;
}
.cta-inner h2{font-size:clamp(24px,3.4vw,34px);line-height:1.25;font-weight:700;color:var(--white)}
.cta-inner p{margin-top:16px;color:rgba(255,255,255,.78);font-size:16px;max-width:520px}
.subscribe-form{display:flex;gap:12px;flex-wrap:wrap}
.subscribe-form input{
  flex:1 1 220px;height:48px;border-radius:var(--radius-input);border:1px solid rgba(255,255,255,.28);
  background:rgba(255,255,255,.08);color:var(--white);padding:0 16px;transition:border-color .22s ease,box-shadow .22s ease;
}
.subscribe-form input::placeholder{color:rgba(255,255,255,.55)}
.subscribe-form input:focus{
  outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(255,90,31,.28);background:rgba(255,255,255,.14);
}
.form-note{margin-top:14px;font-size:13px;color:rgba(255,255,255,.6)}
.form-msg{margin-top:10px;font-size:13px;color:var(--accent-050);min-height:20px}
.form-msg.is-error{color:#FFB4A0}

/* ============ footer ============ */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.8);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo{color:var(--white)}
.footer-brand .logo:hover{color:var(--accent-050)}
.footer-brand .logo-text small{color:rgba(255,255,255,.55)}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:320px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--white);margin-bottom:16px}
.footer-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.footer-col a{color:rgba(255,255,255,.72);font-size:14px}
.footer-col a:hover{color:var(--accent-050)}
.footer-col p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.62)}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.14);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom .policies{display:flex;gap:18px}
.footer-bottom a{color:rgba(255,255,255,.55)}
.footer-bottom a:hover{color:var(--accent-050)}

/* ============ motion ============ */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .34s cubic-bezier(.22,.61,.36,1),transform .34s cubic-bezier(.22,.61,.36,1)}
.reveal.is-visible{opacity:1;transform:none}

/* ============ responsive ============ */
@media (max-width:1279px){
  .partner-wall{grid-template-columns:repeat(5,1fr)}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  .hero{padding:64px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:8px 0}
  .claim-grid{grid-template-columns:1fr;gap:28px}
  .vlabel{writing-mode:horizontal-tb;letter-spacing:.24em}
  .claim-item:nth-child(2),.claim-item:nth-child(3){padding-left:0}
  .story-grid{grid-template-columns:1fr;gap:32px}
  .card--lg,.card--md,.card--sm,.card--wide{grid-column:span 6}
  .news-list{grid-template-columns:1fr}
  .trust-stats{grid-template-columns:repeat(3,1fr)}
  .partner-wall{grid-template-columns:repeat(3,1fr)}
  .quotes{grid-template-columns:1fr}
  .cta-inner{grid-template-columns:1fr;gap:28px;padding:64px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .nav,.header-cta .btn{display:none}
  .burger{display:flex}
  .header-inner{height:60px}
  .hero{padding:48px 0 44px}
  .hero-sub{font-size:16px}
  .hero-stats{grid-template-columns:1fr 1fr;margin-top:40px}
  .hero-stats div{padding:18px 12px 0 0}
  .card--lg,.card--md,.card--sm,.card--wide{grid-column:span 12}
  .trust-stats{grid-template-columns:1fr;gap:16px}
  .partner-wall{grid-template-columns:repeat(2,1fr)}
  .news-card{flex-direction:column}
  .news-thumb{flex:0 0 auto}
  .news-thumb img{aspect-ratio:16/10;min-height:0}
  .claim-item{grid-template-columns:1fr;gap:12px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .hero h1{font-size:28px}
  .news-head{flex-direction:column;align-items:flex-start}
  .btn{width:100%}
  .hero-actions .btn{width:100%}
  .btn-ghost{width:auto}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --brand-900:#0B2B24;
  --brand-700:#134A3C;
  --brand-500:#1F7A5F;
  --accent-500:#FF5A1F;
  --accent-050:#FFE7DC;
  --accent-ink:#B33A0C;
  --paper:#FAF8F4;
  --paper-2:#F1EDE6;
  --line:#E2DCD2;
  --text-1:#14201C;
  --text-2:#5A6660;
  --white:#FFFFFF;
  --danger:#C0392B;
  --radius-card:18px;
  --radius-btn:12px;
  --radius-input:10px;
  --shadow-1:0 1px 2px rgba(11,43,36,.06),0 8px 24px -12px rgba(11,43,36,.16);
  --shadow-2:0 18px 40px -18px rgba(11,43,36,.28);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text-1);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
::selection{background:var(--accent-050);color:var(--accent-ink)}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"Inter",monospace;font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--white);
  border-bottom:1px solid var(--line);
  transition:box-shadow .28s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-1)}
.header-inner{
  height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:800;letter-spacing:-.01em;color:var(--brand-900)}
.logo-mark{
  width:34px;height:34px;border-radius:10px;background:var(--brand-700);color:#fff;
  display:grid;place-items:center;font-size:15px;font-weight:800;letter-spacing:0;
}
.logo-text small{display:block;font-size:11px;font-weight:600;letter-spacing:.16em;color:var(--brand-500);line-height:1.2}
.nav{display:flex;align-items:center;gap:30px}
.nav a{
  position:relative;font-size:15px;color:var(--text-1);padding:6px 0;white-space:nowrap;
  transition:color .2s ease;
}
.nav a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--accent-500);
  transition:width .22s cubic-bezier(.22,.61,.36,1);
}
.nav a:hover{color:var(--brand-700)}
.nav a:hover::after{width:100%}
.nav a.is-active{color:var(--brand-700);font-weight:700}
.nav a.is-active::after{width:100%}
.header-cta{display:inline-flex;align-items:center;gap:8px}

.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--brand-900);border-radius:2px;transition:transform .25s ease,opacity .25s ease}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.drawer{
  position:fixed;inset:60px 0 0 0;z-index:55;background:var(--paper);
  padding:24px;display:none;flex-direction:column;overflow-y:auto;
  border-top:1px solid var(--line);
}
.drawer.is-open{display:flex}
.drawer a.drawer-link{
  font-size:18px;line-height:56px;border-bottom:1px solid var(--line);color:var(--text-1);
  display:flex;align-items:center;justify-content:space-between;
}
.drawer a.drawer-link.is-active{color:var(--brand-700);font-weight:700}
.drawer-cta{margin-top:auto;padding-top:24px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);font-weight:700;font-size:15px;
  padding:0 22px;height:46px;line-height:1;white-space:nowrap;
  transition:transform .2s ease,background-color .2s ease,color .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--accent-500);color:#fff}
.btn-primary:hover{background:#EB4C13;transform:translateY(-1px);box-shadow:var(--shadow-1)}
.btn-primary:active{transform:translateY(0)}
.btn-secondary{background:transparent;color:var(--brand-700);border:1.5px solid var(--brand-700)}
.btn-secondary:hover{background:var(--brand-700);color:#fff}
.btn-ghost{background:transparent;color:var(--brand-700);padding:0 4px;height:auto}
.btn-ghost .arrow{transition:transform .2s ease}
.btn-ghost:hover .arrow{transform:translateX(2px)}
.btn-lg{height:54px;padding:0 28px;font-size:16px}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.btn-block{width:100%}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--accent-050);color:var(--accent-ink);
  border-radius:999px;padding:4px 12px;font-size:13px;font-weight:600;line-height:1.6;
}
.badge-plain{background:var(--paper-2);color:var(--text-2)}
.tag{
  display:inline-block;background:var(--accent-050);color:var(--accent-ink);
  border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;
}

/* ---------- hero ---------- */
.page-hero{
  position:relative;color:#fff;overflow:hidden;
  background-image:linear-gradient(112deg,rgba(11,43,36,.95) 0%,rgba(19,74,60,.88) 52%,rgba(11,43,36,.8) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:64px 64px;opacity:.9;
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;
  padding:96px 0 88px;
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:#FFD9C8;background:rgba(255,90,31,.18);border:1px solid rgba(255,90,31,.45);
  border-radius:999px;padding:5px 14px;letter-spacing:.02em;
}
.hero-title{
  margin-top:22px;
  font-size:clamp(30px,6vw,56px);font-weight:800;line-height:1.15;letter-spacing:-.02em;
}
.hero-sub{
  margin-top:20px;font-size:18px;line-height:1.85;color:rgba(255,255,255,.86);max-width:640px;
}
.hero-actions{margin-top:34px;display:flex;flex-wrap:wrap;gap:14px}
.hero-actions .btn-secondary{color:#fff;border-color:rgba(255,255,255,.62)}
.hero-actions .btn-secondary:hover{background:#fff;color:var(--brand-700);border-color:#fff}
.hero-meta{
  margin-top:30px;display:flex;flex-wrap:wrap;gap:10px 26px;font-size:13px;color:rgba(255,255,255,.7);
}
.hero-meta span{display:inline-flex;align-items:center;gap:8px}
.hero-meta span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent-500)}

.hero-panel{
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.2);
  border-radius:var(--radius-card);
  padding:28px;
  backdrop-filter:blur(2px);
}
.hero-panel h2{font-size:15px;font-weight:700;letter-spacing:.08em;color:#FFD9C8;margin-bottom:18px}
.point-list li{
  display:flex;gap:14px;padding:14px 0;border-bottom:1px dashed rgba(255,255,255,.22);
}
.point-list li:last-child{border-bottom:0;padding-bottom:0}
.point-list li:first-child{padding-top:0}
.point-num{font-size:13px;font-weight:700;color:var(--accent-500);flex:0 0 auto;padding-top:2px}
.point-body strong{display:block;font-size:15px;font-weight:700;color:#fff}
.point-body span{font-size:13.5px;color:rgba(255,255,255,.72);line-height:1.7}

/* ---------- sections ---------- */
.section{padding:88px 0}
.section-alt{background:var(--paper-2)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.kicker{
  display:flex;align-items:center;gap:12px;font-size:13px;font-weight:700;letter-spacing:.14em;
  color:var(--brand-500);margin-bottom:14px;text-transform:none;
}
.v-label{
  writing-mode:vertical-rl;font-size:12px;letter-spacing:.3em;color:var(--brand-500);
  border-left:1px solid var(--line);padding-left:8px;height:64px;display:inline-flex;align-items:center;
}
.section-title{font-size:clamp(24px,3.4vw,36px);font-weight:700;line-height:1.25;letter-spacing:-.01em;color:var(--brand-900)}
.section-desc{margin-top:16px;font-size:17px;line-height:1.85;color:var(--text-2)}

/* ---------- feature rows ---------- */
.feature{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
}
.feature + .feature{margin-top:72px}
.feature-media{
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);background:var(--paper-2);
  aspect-ratio:16/10;
}
.feature-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s cubic-bezier(.22,.61,.36,1)}
.feature-media:hover img{transform:scale(1.03)}
.feature.reverse .feature-media{order:2}
.feature-body h3{font-size:22px;font-weight:700;line-height:1.4;color:var(--brand-900);margin-bottom:16px}
.feature-body > p{color:var(--text-2);margin-bottom:20px}
.check-list li{
  display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--line);font-size:15.5px;
}
.check-list li:last-child{border-bottom:0}
.check-mark{
  flex:0 0 22px;width:22px;height:22px;border-radius:50%;background:var(--brand-700);color:#fff;
  font-size:12px;font-weight:700;display:grid;place-items:center;margin-top:5px;
}
.check-list strong{font-weight:700;color:var(--text-1)}
.check-list span{color:var(--text-2);display:block;font-size:14.5px;line-height:1.75}

/* ---------- stats ---------- */
.stats-band{
  background:var(--brand-900);color:#fff;border-radius:var(--radius-card);
  padding:44px 40px;display:grid;grid-template-columns:repeat(4,1fr);gap:32px;
}
.stat-item{border-left:1px solid rgba(255,255,255,.18);padding-left:22px}
.stat-item:first-child{border-left:0;padding-left:0}
.stat-num{font-size:clamp(28px,3.6vw,40px);font-weight:800;letter-spacing:-.02em;color:#fff;line-height:1.1}
.stat-num em{font-style:normal;color:var(--accent-500);font-size:.6em;margin-left:4px;font-weight:700}
.stat-label{margin-top:10px;font-size:14px;color:rgba(255,255,255,.72);line-height:1.7}

/* ---------- faq ---------- */
.faq-wrap{max-width:820px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
  padding:22px 0;font-size:17px;font-weight:700;color:var(--brand-900);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{position:relative;flex:0 0 22px;width:22px;height:22px;margin-top:6px;transition:transform .28s ease}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand-500);border-radius:2px;
}
.faq-icon::before{left:0;top:10px;width:22px;height:2px}
.faq-icon::after{left:10px;top:0;width:2px;height:22px}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-answer{padding:0 46px 26px 0;font-size:15px;line-height:1.8;color:var(--text-2)}
.faq-answer p + p{margin-top:12px}

/* ---------- cta ---------- */
.cta-band{
  background:var(--brand-900);color:#fff;padding:72px 0;
}
.cta-grid{display:grid;grid-template-columns:6fr 5fr;gap:56px;align-items:center}
.cta-band h2{font-size:clamp(24px,3.2vw,34px);font-weight:700;line-height:1.28;letter-spacing:-.01em}
.cta-band p{margin-top:16px;color:rgba(255,255,255,.76);font-size:16px}
.cta-form{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-card);padding:26px;
}
.field-label{display:block;font-size:13px;color:rgba(255,255,255,.7);margin-bottom:8px;letter-spacing:.04em}
.field-row{display:flex;gap:12px}
.input{
  flex:1 1 auto;height:48px;border:1px solid var(--line);border-radius:var(--radius-input);
  padding:0 14px;background:#fff;color:var(--text-1);font-size:15px;transition:border-color .2s ease,box-shadow .2s ease;
}
.input::placeholder{color:#9AA6A0}
.input:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(255,90,31,.22)}
.form-note{margin-top:12px;font-size:13px;color:rgba(255,255,255,.6);line-height:1.7}
.form-feedback{margin-top:10px;font-size:13px;color:#FFD9C8;min-height:20px}
.form-feedback.is-error{color:#FF9C86}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.8);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:2.2fr 1fr 1fr 1.3fr;gap:40px}
.footer-brand .logo{color:#fff}
.footer-brand .logo-mark{background:var(--accent-500)}
.footer-brand .logo-text small{color:rgba(255,255,255,.6)}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);max-width:320px}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:18px;letter-spacing:.04em}
.footer-col li{margin-bottom:12px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);transition:color .2s ease}
.footer-col a:hover{color:var(--accent-050)}
.footer-col .contact-line{font-size:14px;color:rgba(255,255,255,.72);line-height:1.8}
.footer-bottom{
  margin-top:52px;border-top:1px solid rgba(255,255,255,.14);
  padding:22px 0 28px;display:flex;flex-wrap:wrap;gap:12px 24px;
  justify-content:space-between;font-size:13px;color:rgba(255,255,255,.56);
}
.footer-bottom a{color:rgba(255,255,255,.7)}
.footer-bottom a:hover{color:var(--accent-050)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(14px)}
.reveal.is-in{opacity:1;transform:none;transition:opacity .34s cubic-bezier(.22,.61,.36,1),transform .34s cubic-bezier(.22,.61,.36,1)}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .hero-grid{gap:40px}
  .feature{gap:40px}
}
@media (max-width:1023px){
  .nav{display:none}
  .header-cta{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{height:60px}
  .section{padding:72px 0}
  .hero-grid{grid-template-columns:1fr;padding:72px 0 64px;gap:36px}
  .feature{grid-template-columns:1fr;gap:28px}
  .feature.reverse .feature-media{order:0}
  .stats-band{grid-template-columns:repeat(2,1fr);padding:36px 28px;gap:26px}
  .stat-item:nth-child(3){border-left:0;padding-left:0}
  .cta-grid{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .container{padding:0 18px}
  .section{padding:48px 0}
  .section-head{margin-bottom:28px}
  .hero-title{font-size:clamp(28px,8vw,36px)}
  .hero-sub{font-size:16px}
  .hero-actions .btn{width:100%}
  .hero-panel{padding:22px}
  .stats-band{grid-template-columns:1fr;padding:30px 22px;gap:22px}
  .stat-item{border-left:0;padding-left:0;border-top:1px solid rgba(255,255,255,.16);padding-top:20px}
  .stat-item:first-child{border-top:0;padding-top:0}
  .feature + .feature{margin-top:44px}
  .faq-item summary{font-size:16px;padding:18px 0}
  .faq-answer{padding-right:0}
  .field-row{flex-direction:column}
  .cta-form{padding:20px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .site-footer{padding:48px 0 0}
}
@media (max-width:520px){
  .hero-meta{gap:8px 18px}
  .btn{font-size:14.5px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none!important;animation:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --brand-900:#0B2B24;
  --brand-700:#134A3C;
  --brand-500:#1F7A5F;
  --accent-500:#FF5A1F;
  --accent-050:#FFE7DC;
  --accent-ink:#B33A0C;
  --paper:#FAF8F4;
  --paper-2:#F1EDE6;
  --line:#E2DCD2;
  --text-1:#14201C;
  --text-2:#5A6660;
  --white:#FFFFFF;
  --error:#C0392B;
  --shadow-1:0 1px 2px rgba(11,43,36,.06),0 8px 24px -12px rgba(11,43,36,.16);
  --shadow-2:0 18px 40px -18px rgba(11,43,36,.28);
  --r-card:18px;
  --r-btn:12px;
  --r-input:10px;
  --container:1200px;
  --mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans 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(--sans);font-size:16px;line-height:1.85;color:var(--text-1);background:var(--paper);-webkit-font-smoothing:antialiased;}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-500);text-decoration:none;transition:color .22s ease;}
a:hover{color:var(--brand-700);}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input{font:inherit;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:120;background:var(--white);border-bottom:1px solid var(--line);transition:box-shadow .24s ease;}
.site-header.is-scrolled{box-shadow:var(--shadow-1);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--text-1);font-weight:800;font-size:18px;letter-spacing:-.01em;}
.brand:hover{color:var(--brand-700);}
.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--brand-700);color:#fff;display:grid;place-items:center;font-size:15px;font-weight:800;flex:0 0 auto;}
.brand-text{white-space:nowrap;}
.nav{display:flex;align-items:center;gap:30px;}
.nav a{position:relative;display:inline-block;padding:6px 0;font-size:15px;font-weight:600;color:var(--text-2);}
.nav a::after{content:"";position:absolute;left:0;bottom:-2px;height:2px;width:0;background:var(--accent-500);transition:width .22s ease;}
.nav a:hover{color:var(--brand-700);}
.nav a:hover::after{width:100%;}
.nav a.is-active{color:var(--brand-700);}
.nav a.is-active::after{width:100%;}
.header-actions{display:flex;align-items:center;gap:12px;}
.menu-btn{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;align-items:center;justify-content:center;color:var(--brand-700);}
.menu-btn:hover{border-color:var(--brand-500);color:var(--brand-500);}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-btn);font-weight:700;font-size:15px;height:46px;padding:0 22px;white-space:nowrap;transition:transform .22s ease,background-color .22s ease,color .22s ease,border-color .22s ease,box-shadow .22s ease;}
.btn-primary{background:var(--accent-500);color:#fff;}
.btn-primary:hover{background:#E64C13;color:#fff;transform:translateY(-1px);}
.btn-secondary{background:transparent;color:var(--brand-700);border:1.5px solid var(--brand-700);}
.btn-secondary:hover{background:var(--brand-700);color:#fff;border-color:var(--brand-700);}
.btn-ghost{height:auto;padding:0;color:var(--brand-700);gap:6px;background:none;}
.btn-ghost .arw{transition:transform .22s ease;}
.btn-ghost:hover .arw{transform:translateX(3px);}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn-lg{height:54px;padding:0 30px;font-size:16px;}

/* ---------- drawer ---------- */
.drawer{position:fixed;inset:0;z-index:200;background:var(--paper);padding:18px 24px 28px;display:none;flex-direction:column;transform:translateX(100%);transition:transform .32s cubic-bezier(.22,.61,.36,1);}
.drawer.is-open{transform:translateX(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:60px;}
.drawer-close{width:42px;height:42px;border:1px solid var(--line);border-radius:12px;display:grid;place-items:center;color:var(--brand-700);}
.drawer-nav{display:flex;flex-direction:column;margin-top:18px;border-top:1px solid var(--line);}
.drawer-nav a{font-size:18px;font-weight:600;color:var(--text-1);padding:16px 0;border-bottom:1px solid var(--line);}
.drawer-nav a.is-active{color:var(--brand-700);}
.drawer-foot{margin-top:auto;padding-top:24px;}

/* ---------- breadcrumb ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-2);padding:22px 0 6px;}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--brand-500);}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .current{color:var(--text-1);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- article head ---------- */
.article-hero{padding:14px 0 34px;border-bottom:1px solid var(--line);}
.badge{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;background:var(--accent-050);color:var(--accent-ink);font-size:12.5px;font-weight:700;letter-spacing:.01em;}
.article-title{font-size:clamp(28px,4.6vw,44px);line-height:1.2;font-weight:800;letter-spacing:-.02em;margin:18px 0 18px;max-width:920px;}
.article-lead{font-size:18px;line-height:1.85;color:var(--text-2);max-width:760px;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;margin-top:24px;font-size:13px;color:var(--text-2);}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:7px;}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line);}
.share-group{display:flex;align-items:center;gap:8px;margin-left:auto;}
.share-btn{width:36px;height:36px;border:1px solid var(--line);border-radius:10px;display:grid;place-items:center;color:var(--brand-700);background:var(--white);transition:border-color .22s ease,color .22s ease,transform .22s ease;}
.share-btn:hover{border-color:var(--brand-500);color:var(--brand-500);transform:translateY(-2px);}

/* ---------- layout ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:40px;padding:44px 0 80px;}
@media (min-width:1200px){
  .article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:60px;}
}
.article-main{min-width:0;}

/* ---------- article body ---------- */
.article-body{max-width:760px;font-size:16px;line-height:1.85;color:var(--text-1);}
.article-body > p:first-of-type{font-size:18px;color:var(--text-1);}
.article-body p{margin:0 0 22px;}
.article-body h2{font-size:clamp(22px,2.7vw,28px);line-height:1.3;font-weight:800;letter-spacing:-.01em;margin:46px 0 18px;padding-left:14px;border-left:4px solid var(--brand-700);}
.article-body h3{font-size:20px;line-height:1.4;font-weight:700;margin:32px 0 14px;}
.article-body h4{font-size:17px;font-weight:700;margin:24px 0 12px;color:var(--brand-700);}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:24px;}
.article-body li{margin:8px 0;}
.article-body blockquote{margin:28px 0;padding:18px 22px;background:var(--paper-2);border-left:3px solid var(--brand-700);border-radius:0 12px 12px 0;color:var(--text-2);font-size:16px;}
.article-body img{border-radius:14px;margin:28px 0;width:100%;height:auto;}
.article-body figure{margin:28px 0;}
.article-body figcaption{font-size:13px;line-height:1.6;color:var(--text-2);text-align:center;margin-top:10px;}
.article-body table{width:100%;border-collapse:collapse;margin:28px 0;font-size:15px;}
.article-body th{background:var(--paper-2);text-align:left;font-weight:700;color:var(--text-1);}
.article-body th,.article-body td{border-bottom:1px solid var(--line);padding:12px 14px;vertical-align:top;}
.article-body a{color:var(--brand-500);border-bottom:1px solid rgba(31,122,95,.35);}
.article-body a:hover{color:var(--brand-700);border-bottom-color:var(--brand-700);}
.article-body code{font-family:var(--mono);font-size:14px;background:var(--paper-2);padding:2px 6px;border-radius:6px;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:40px 0;}

/* ---------- tags / post nav ---------- */
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin:44px 0 0;padding-top:26px;border-top:1px solid var(--line);}
.tag-row .tag-label{font-size:13px;color:var(--text-2);margin-right:4px;}
.tag{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;background:var(--accent-050);color:var(--accent-ink);font-size:13px;font-weight:600;}
.tag:hover{background:#FFD9C8;color:var(--accent-ink);}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:32px;}
.post-nav-item{display:block;background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);padding:20px 22px;box-shadow:var(--shadow-1);transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;}
.post-nav-item:hover{transform:translateY(-4px);border-color:var(--brand-500);box-shadow:var(--shadow-2);}
.post-nav-label{display:block;font-size:12.5px;color:var(--text-2);letter-spacing:.06em;margin-bottom:8px;}
.post-nav-title{display:block;font-size:16px;font-weight:700;line-height:1.5;color:var(--text-1);}

/* ---------- sidebar ---------- */
.sidebar{display:flex;flex-direction:column;gap:20px;min-width:0;}
.side-card{background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);padding:22px;box-shadow:var(--shadow-1);}
.side-title{font-size:14px;font-weight:700;color:var(--text-1);letter-spacing:.02em;margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--line);}
.toc-list{list-style:none;padding:0;margin:0;counter-reset:toc;}
.toc-list li{margin:0;}
.toc-list a{display:block;font-size:14px;line-height:1.6;color:var(--text-2);padding:8px 0 8px 14px;border-left:2px solid transparent;}
.toc-list a:hover{color:var(--brand-700);border-left-color:var(--accent-500);}
.toc-list a.is-current{color:var(--brand-700);font-weight:700;border-left-color:var(--accent-500);}
.hot-list{list-style:none;padding:0;margin:0;counter-reset:hot;}
.hot-list li{counter-increment:hot;border-bottom:1px solid var(--line);}
.hot-list li:last-child{border-bottom:0;}
.hot-list a{display:flex;gap:12px;padding:11px 0;font-size:14px;line-height:1.6;color:var(--text-1);}
.hot-list a::before{content:counter(hot,decimal-leading-zero);font-family:var(--mono);font-size:13px;color:var(--brand-500);opacity:.75;flex:0 0 auto;}
.hot-list a:hover{color:var(--brand-700);}
.side-cta{background:var(--brand-900);border:0;color:rgba(255,255,255,.82);}
.side-cta .side-title{color:#fff;border-bottom-color:rgba(255,255,255,.16);}
.side-cta p{font-size:14px;line-height:1.8;margin-bottom:16px;}

/* ---------- related ---------- */
.section{padding:0 0 80px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;}
.section-head h2{font-size:clamp(24px,3.2vw,34px);line-height:1.25;font-weight:800;letter-spacing:-.02em;}
.section-head p{font-size:14px;color:var(--text-2);margin-top:8px;}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);display:flex;flex-direction:column;transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;}
.card:hover{transform:translateY(-4px);border-color:var(--brand-500);box-shadow:var(--shadow-2);}
.card-cover{aspect-ratio:16/10;overflow:hidden;background:var(--paper-2);}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.card:hover .card-cover img{transform:scale(1.03);}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-title{font-size:18px;line-height:1.45;font-weight:700;color:var(--text-1);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-excerpt{font-size:14.5px;line-height:1.72;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.card-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:12px;border-top:1px solid var(--line);font-size:13px;color:var(--text-2);}
.card-foot .time{font-family:var(--mono);}

/* ---------- empty state ---------- */
.empty-state{background:var(--white);border:1px dashed var(--line);border-radius:var(--r-card);padding:56px 24px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:14px;min-height:200px;justify-content:center;}
.empty-state svg{color:var(--brand-500);opacity:.7;}
.empty-state p{font-size:15px;color:var(--text-2);}

/* ---------- CTA band ---------- */
.cta-band{background:var(--brand-900);color:rgba(255,255,255,.82);padding:72px 0;}
.cta-inner{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,420px);gap:48px;align-items:center;}
.cta-band h2{color:#fff;font-size:clamp(24px,3.2vw,34px);line-height:1.25;font-weight:800;letter-spacing:-.02em;margin-bottom:16px;}
.cta-band p{font-size:15px;line-height:1.85;max-width:520px;}
.cta-form{display:flex;flex-wrap:wrap;gap:12px;}
.input{flex:1 1 220px;height:48px;border:1px solid var(--line);border-radius:var(--r-input);padding:0 16px;background:var(--white);color:var(--text-1);transition:border-color .22s ease,box-shadow .22s ease;}
.input::placeholder{color:#98A29D;}
.input:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(255,90,31,.18);}
.input.is-error{border-color:var(--error);}
.form-note{font-size:13px;line-height:1.7;color:rgba(255,255,255,.62);margin-top:14px;}
.form-msg{font-size:14px;margin-top:12px;min-height:20px;color:var(--accent-050);}
.form-msg.is-error{color:#FFB4A2;}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.8);padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:18px;margin-bottom:16px;}
.footer-brand .brand-mark{background:var(--accent-500);}
.footer-desc{font-size:14px;line-height:1.85;max-width:340px;}
.footer-quote{margin-top:18px;font-size:13.5px;color:rgba(255,255,255,.66);border-left:2px solid var(--accent-500);padding-left:12px;}
.footer-quote b{color:#fff;font-weight:700;}
.footer-col h3{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.8);}
.footer-col a:hover{color:var(--accent-050);}
.footer-contact p{font-size:14px;line-height:1.9;margin-bottom:10px;}
.footer-bottom{margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.6);}
.footer-bottom a{color:rgba(255,255,255,.6);}
.footer-bottom a:hover{color:var(--accent-050);}

/* ---------- toast ---------- */
.toast{position:fixed;left:50%;bottom:32px;transform:translate(-50%,16px);background:var(--brand-900);color:#fff;font-size:14px;padding:12px 20px;border-radius:var(--r-btn);box-shadow:var(--shadow-2);opacity:0;pointer-events:none;transition:opacity .24s ease,transform .24s ease;z-index:300;}
.toast.is-show{opacity:1;transform:translate(-50%,0);}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .32s cubic-bezier(.22,.61,.36,1),transform .32s cubic-bezier(.22,.61,.36,1);}
.reveal.is-visible{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .cta-inner{grid-template-columns:minmax(0,1fr);gap:32px;}
}
@media (max-width:1023px){
  .nav{display:none;}
  .menu-btn{display:inline-flex;}
  .drawer{display:flex;}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .container{padding:0 18px;}
  .header-inner{height:60px;}
  .brand{font-size:16px;}
  .brand-mark{width:30px;height:30px;border-radius:9px;font-size:14px;}
  .header-actions .btn-primary{display:none;}
  .article-hero{padding:10px 0 26px;}
  .article-title{margin:14px 0 14px;}
  .article-lead{font-size:16px;}
  .article-meta{gap:8px 16px;}
  .share-group{margin-left:0;width:100%;}
  .article-layout{padding:32px 0 56px;gap:32px;}
  .article-body{font-size:15.5px;line-height:1.85;}
  .article-body > p:first-of-type{font-size:16.5px;}
  .article-body h2{margin:36px 0 16px;}
  .post-nav{grid-template-columns:1fr;}
  .grid-3{grid-template-columns:1fr;}
  .section{padding:0 0 56px;}
  .cta-band{padding:52px 0;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .toast{left:18px;right:18px;transform:translate(0,16px);text-align:center;}
  .toast.is-show{transform:translate(0,0);}
}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
/* ===================== 设计令牌 ===================== */
:root{
  --brand-900:#0B2B24;
  --brand-700:#134A3C;
  --brand-500:#1F7A5F;
  --accent-500:#FF5A1F;
  --accent-600:#E24A12;
  --accent-050:#FFE7DC;
  --accent-text:#B33A0C;
  --paper:#FAF8F4;
  --paper-2:#F1EDE6;
  --line:#E2DCD2;
  --text-1:#14201C;
  --text-2:#5A6660;
  --white:#FFFFFF;
  --shadow-1:0 1px 2px rgba(11,43,36,.06),0 8px 24px -12px rgba(11,43,36,.16);
  --shadow-2:0 18px 40px -18px rgba(11,43,36,.28);
  --r-card:18px;
  --r-btn:12px;
  --r-input:10px;
  --font-sans:-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Inter",monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
  --danger:#C0392B;
}

/* ===================== 基础重置 ===================== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text-1);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body.nav-open{overflow:hidden}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding-left:0;list-style:none}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px}

/* ===================== 容器与区块 ===================== */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1240px}}
.section{padding:96px 0}
.section--tight{padding:64px 0}
.section--paper2{background:var(--paper-2)}

.section-head{max-width:740px;margin-bottom:40px}
.section-head .kicker{
  display:inline-block;font-size:13px;letter-spacing:.08em;color:var(--brand-500);
  font-weight:700;margin-bottom:12px;
}
.section-head h2{
  font-size:clamp(24px,3.4vw,36px);font-weight:700;line-height:1.25;letter-spacing:-.01em;color:var(--brand-900);
}
.section-head p{margin-top:14px;font-size:16px;line-height:1.85;color:var(--text-2)}

/* ===================== 顶部导航 ===================== */
.site-header{
  position:sticky;top:0;z-index:60;background:var(--white);
  border-bottom:1px solid var(--line);
  transition:box-shadow .28s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-1)}
.header-inner{display:flex;align-items:center;gap:26px;height:72px}
.logo{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.logo-mark{
  width:32px;height:32px;border-radius:9px;background:var(--brand-700);position:relative;flex:0 0 auto;
}
.logo-mark::after{
  content:"";position:absolute;left:9px;top:9px;right:9px;bottom:9px;
  border:2px solid var(--accent-500);border-radius:2px;
}
.logo-text{font-size:18px;font-weight:800;letter-spacing:-.02em;color:var(--brand-900);white-space:nowrap}
.logo-text em{font-style:normal;color:var(--brand-500)}
.nav{margin-left:auto;display:flex;align-items:center;gap:26px}
.nav a{
  position:relative;font-size:15px;color:var(--text-2);padding:6px 0;
  transition:color .22s var(--ease);white-space:nowrap;
}
.nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--accent-500);
  transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
}
.nav a:hover{color:var(--brand-700)}
.nav a:hover::after{transform:scaleX(1)}
.nav a.is-active{color:var(--brand-700);font-weight:700}
.nav a.is-active::after{transform:scaleX(1)}
.header-cta{flex:0 0 auto}

.menu-toggle{
  display:none;width:44px;height:44px;margin-left:auto;border-radius:10px;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.menu-toggle span{display:block;width:20px;height:2px;background:var(--brand-900);border-radius:2px;transition:transform .24s var(--ease),opacity .24s}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.drawer{
  position:fixed;inset:0;z-index:80;background:var(--paper);
  display:flex;flex-direction:column;padding:20px 24px 32px;
  transform:translateY(-102%);transition:transform .32s var(--ease);
}
.drawer.is-open{transform:translateY(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:60px}
.drawer-close{width:44px;height:44px;border-radius:10px;font-size:22px;line-height:1;color:var(--brand-700);display:flex;align-items:center;justify-content:center}
.drawer-nav{margin-top:18px;display:flex;flex-direction:column;border-top:1px solid var(--line)}
.drawer-nav a{
  font-size:18px;line-height:56px;color:var(--text-1);border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--brand-700);font-weight:700}
.drawer-bottom{margin-top:auto;padding-top:24px}

/* ===================== 按钮 ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);font-size:15px;font-weight:700;line-height:1;
  padding:0 22px;height:46px;border:1.5px solid transparent;
  transition:background-color .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
  white-space:nowrap;cursor:pointer;
}
.btn--sm{height:36px;padding:0 16px;font-size:14px}
.btn--lg{height:54px;padding:0 28px;font-size:16px}
.btn--primary{background:var(--accent-500);color:var(--white)}
.btn--primary:hover{background:var(--accent-600);transform:translateY(-1px)}
.btn--secondary{background:transparent;color:var(--brand-700);border-color:var(--brand-700)}
.btn--secondary:hover{background:var(--brand-700);color:var(--white)}
.btn--ghost{padding:0;height:auto;color:var(--brand-700);font-weight:700}
.btn--ghost .arrow{transition:transform .22s var(--ease)}
.btn--ghost:hover .arrow{transform:translateX(2px)}
.btn--light{background:var(--white);color:var(--brand-900)}
.btn--light:hover{transform:translateY(-1px);background:var(--accent-050)}
.btn:active{transform:translateY(0)}

/* ===================== 分类页首屏 ===================== */
.page-hero{position:relative;overflow:hidden;padding:84px 0 60px;background:var(--paper)}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(var(--brand-700) 1px,transparent 1px),linear-gradient(90deg,var(--brand-700) 1px,transparent 1px);
  background-size:72px 72px;opacity:.06;
}
.page-hero::after{
  content:"";position:absolute;right:-140px;top:-120px;width:460px;height:460px;border-radius:50%;
  border:1px solid var(--line);pointer-events:none;
}
.page-hero .container{position:relative;z-index:1}
.hero-flex{display:grid;grid-template-columns:1.55fr 1fr;gap:56px;align-items:end}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;background:var(--accent-050);color:var(--accent-text);
  border-radius:999px;padding:6px 14px;font-size:13px;font-weight:700;margin-bottom:22px;
}
.eyebrow i{display:block;width:6px;height:6px;border-radius:50%;background:var(--accent-500)}
.page-hero h1{
  font-size:clamp(30px,6vw,56px);font-weight:800;line-height:1.15;letter-spacing:-.02em;color:var(--brand-900);
}
.page-hero .lede{
  margin-top:20px;font-size:18px;line-height:1.85;color:var(--text-2);max-width:720px;
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag{
  display:inline-block;background:var(--white);border:1px solid var(--line);border-radius:999px;
  padding:6px 14px;font-size:13px;color:var(--text-2);
}
.hero-side{border-left:2px solid var(--accent-500);padding-left:22px}
.hero-side h2{font-size:15px;font-weight:700;color:var(--brand-900);margin-bottom:12px}
.hero-side ul li{
  font-size:14px;line-height:1.85;color:var(--text-2);padding:7px 0;border-bottom:1px dashed var(--line);
}
.hero-side ul li:last-child{border-bottom:0}
.hero-side ul li b{color:var(--brand-700);font-family:var(--font-mono)}

/* 数据条 */
.metric-bar{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;margin-top:48px;
}
.metric{background:var(--white);padding:22px}
.metric b{
  display:block;font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:30px;font-weight:800;letter-spacing:-.02em;color:var(--brand-700);line-height:1.2;
}
.metric b i{font-style:normal;font-size:14px;font-weight:700;margin-left:2px;color:var(--brand-500)}
.metric span{display:block;margin-top:6px;font-size:13px;color:var(--text-2);line-height:1.6}

/* ===================== 混合卡片栅格 ===================== */
.mix{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.card{
  display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--shadow-1);overflow:hidden;
  transition:transform .32s var(--ease),box-shadow .32s var(--ease),border-color .32s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:var(--brand-500);box-shadow:var(--shadow-2)}
.card figure{margin:0;aspect-ratio:16/10;overflow:hidden;background:var(--paper-2)}
.card figure img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease)}
.card:hover figure img{transform:scale(1.03)}
.card-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card h3{font-size:18px;font-weight:700;line-height:1.4;color:var(--brand-900)}
.card p{font-size:15px;line-height:1.75;color:var(--text-2)}
.badge{
  display:inline-block;background:var(--accent-050);color:var(--accent-text);
  border-radius:999px;padding:4px 11px;font-size:12px;font-weight:700;line-height:1.6;
}
.card-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-2);
}
.card-foot .date{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.card-foot .go{color:var(--brand-700);font-weight:700;display:inline-flex;align-items:center;gap:6px}
.card-foot .go .arrow{transition:transform .22s var(--ease)}
.card:hover .card-foot .go .arrow{transform:translateX(2px)}

.card--xl{grid-column:span 8;grid-row:span 2}
.card--md{grid-column:span 4}
.card--sm{grid-column:span 4}
.card--xl figure{aspect-ratio:16/9}
.card--xl .card-body{padding:26px}
.card--xl h3{font-size:24px;line-height:1.35}
.card--xl p{font-size:16px}
.card--sm .card-body{padding:18px 20px}
.card--sm h3{font-size:17px}
.card--sm p{font-size:14px}

/* ===================== 时间线 ===================== */
.timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.tl-item{
  position:relative;background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 26px 26px;transition:transform .32s var(--ease),box-shadow .32s var(--ease),border-color .32s var(--ease);
}
.tl-item:hover{transform:translateY(-4px);border-color:var(--brand-500);box-shadow:var(--shadow-2)}
.tl-num{
  font-family:var(--font-mono);font-size:46px;font-weight:800;line-height:1;
  color:var(--brand-500);opacity:.18;letter-spacing:-.02em;margin-bottom:6px;
}
.tl-item h3{font-size:20px;font-weight:700;color:var(--brand-900);line-height:1.4}
.tl-item p{margin-top:12px;font-size:15px;line-height:1.85;color:var(--text-2)}
.tl-item .tl-tag{
  display:inline-block;margin-top:18px;font-size:12px;font-weight:700;color:var(--brand-500);
  border-top:1px solid var(--line);padding-top:12px;width:100%;
}

/* ===================== 检查清单 ===================== */
.check-wrap{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.check{
  display:flex;gap:16px;align-items:flex-start;background:var(--white);
  border:1px solid var(--line);border-radius:var(--r-card);padding:22px;
  transition:border-color .28s var(--ease),box-shadow .28s var(--ease);
}
.check:hover{border-color:var(--brand-500);box-shadow:var(--shadow-1)}
.check .idx{
  flex:0 0 auto;width:32px;height:32px;border-radius:9px;background:var(--paper-2);
  color:var(--brand-700);font-family:var(--font-mono);font-size:14px;font-weight:700;
  display:flex;align-items:center;justify-content:center;margin-top:2px;
}
.check h3{font-size:16px;font-weight:700;color:var(--brand-900);line-height:1.5}
.check p{margin-top:6px;font-size:14px;line-height:1.75;color:var(--text-2)}

/* ===================== FAQ ===================== */
.faq{border-top:1px solid var(--line);max-width:880px}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;font-size:17px;font-weight:700;color:var(--brand-900);
  cursor:pointer;list-style:none;transition:color .22s var(--ease);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--brand-500)}
.faq .plus{
  flex:0 0 auto;width:22px;height:22px;position:relative;transition:transform .28s var(--ease);
}
.faq .plus::before,.faq .plus::after{
  content:"";position:absolute;background:var(--brand-700);border-radius:2px;
}
.faq .plus::before{left:0;right:0;top:10px;height:2px}
.faq .plus::after{top:0;bottom:0;left:10px;width:2px}
.faq details[open] .plus{transform:rotate(45deg)}
.faq .answer{padding:0 4px 24px;font-size:15px;line-height:1.85;color:var(--text-2);max-width:760px}

/* ===================== CTA 通栏 ===================== */
.cta-band{position:relative;background:var(--brand-900);color:var(--white);overflow:hidden}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(11,43,36,.88),rgba(11,43,36,.94)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.cta-band .container{position:relative;z-index:1;padding-top:80px;padding-bottom:80px}
.cta-inner{display:grid;grid-template-columns:1.4fr 1fr;gap:48px;align-items:center}
.cta-band h2{font-size:clamp(24px,3.4vw,36px);font-weight:700;line-height:1.25;letter-spacing:-.01em}
.cta-band p{margin-top:16px;font-size:16px;line-height:1.85;color:rgba(255,255,255,.78);max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-note{margin-top:18px;font-size:13px;color:rgba(255,255,255,.6);line-height:1.7}

/* ===================== 表单 ===================== */
.subscribe{display:flex;gap:12px;flex-wrap:wrap}
.subscribe input{
  flex:1 1 220px;height:48px;border-radius:var(--r-input);border:1px solid rgba(255,255,255,.28);
  background:rgba(255,255,255,.08);color:var(--white);padding:0 16px;font-size:15px;
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease),background-color .24s var(--ease);
}
.subscribe input::placeholder{color:rgba(255,255,255,.55)}
.subscribe input:focus{
  outline:none;border-color:var(--accent-500);background:rgba(255,255,255,.12);
  box-shadow:0 0 0 3px rgba(255,90,31,.28);
}

/* ===================== 页脚 ===================== */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.8);padding:68px 0 0;font-size:14px;line-height:1.8}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .logo-text{color:var(--white);font-size:17px}
.footer-brand .logo-mark{background:var(--brand-500)}
.footer-brand p{margin-top:16px;color:rgba(255,255,255,.7);max-width:320px}
.footer-quote{
  margin-top:18px;padding:12px 16px;border-left:2px solid var(--accent-500);
  background:rgba(255,255,255,.05);border-radius:0 10px 10px 0;
  font-size:13px;color:rgba(255,255,255,.75);
}
.footer-quote b{color:var(--white)}
.footer-col h4{font-size:14px;font-weight:700;color:var(--white);margin-bottom:16px;letter-spacing:.02em}
.footer-col ul li{margin-bottom:10px}
.footer-col a{color:rgba(255,255,255,.8);transition:color .22s var(--ease)}
.footer-col a:hover{color:var(--accent-050)}
.footer-col .meta{color:rgba(255,255,255,.66)}
.footer-bottom{
  margin-top:52px;border-top:1px solid rgba(255,255,255,.12);padding:22px 0 26px;
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.7)}
.footer-bottom a:hover{color:var(--accent-050)}
.footer-bottom .links{display:flex;gap:18px;flex-wrap:wrap}

/* ===================== 入场动效 ===================== */
[data-reveal]{opacity:0;transform:translateY(14px);transition:opacity .32s var(--ease),transform .32s var(--ease)}
[data-reveal].is-in{opacity:1;transform:none}

/* ===================== 响应式 ===================== */
@media (max-width:1279px){
  .nav{gap:20px}
  .nav a{font-size:14px}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  .section--tight{padding:56px 0}
  .hero-flex{grid-template-columns:1fr;gap:32px;align-items:start}
  .hero-side{border-left:0;border-top:2px solid var(--accent-500);padding-left:0;padding-top:18px}
  .metric-bar{grid-template-columns:repeat(2,1fr)}
  .card--xl{grid-column:span 12;grid-row:auto}
  .card--md{grid-column:span 6}
  .card--sm{grid-column:span 6}
  .timeline{grid-template-columns:1fr}
  .check-wrap{grid-template-columns:1fr}
  .cta-inner{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .nav{display:none}
  .menu-toggle{display:flex}
  .header-inner{height:60px;gap:14px}
  .header-cta{display:none}
  .page-hero{padding:52px 0 44px}
  .section{padding:52px 0}
  .section--tight{padding:44px 0}
  .section-head{margin-bottom:28px}
  .page-hero .lede{font-size:16px}
  .metric-bar{grid-template-columns:1fr;margin-top:32px}
  .metric{padding:18px 20px}
  .card--md,.card--sm{grid-column:span 12}
  .card--xl h3{font-size:21px}
  .cta-band .container{padding-top:56px;padding-bottom:56px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.001ms !important;animation-duration:.001ms !important}
  [data-reveal]{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --brand-900:#0B2B24;
  --brand-700:#134A3C;
  --brand-500:#1F7A5F;
  --accent-500:#FF5A1F;
  --accent-050:#FFE7DC;
  --accent-ink:#B33A0C;
  --paper:#FAF8F4;
  --paper-2:#F1EDE6;
  --line:#E2DCD2;
  --text-1:#14201C;
  --text-2:#5A6660;
  --white:#FFFFFF;
  --shadow-1:0 1px 2px rgba(11,43,36,.06), 0 8px 24px -12px rgba(11,43,36,.16);
  --shadow-2:0 18px 40px -18px rgba(11,43,36,.28);
  --radius:18px;
  --radius-sm:12px;
  --container:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--text-1);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand-500);text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--brand-700)}
button{font:inherit;cursor:pointer}
input,textarea{font:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:-0.01em}
p{margin:0 0 18px}
ul,ol{margin:0 0 18px;padding-left:22px}
li{margin-bottom:8px}
:focus-visible{outline:2px solid var(--accent-500);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{max-width:var(--container);margin:0 auto;padding:0 24px;width:100%}
.num{font-family:ui-monospace,SFMono-Regular,Inter,monospace;font-variant-numeric:tabular-nums}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;background:var(--white);
  border-bottom:1px solid var(--line);
  transition:box-shadow .28s var(--ease);
}
.site-header.is-stuck{box-shadow:var(--shadow-1)}
.header-inner{display:flex;align-items:center;gap:26px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:var(--text-1);letter-spacing:-0.02em;white-space:nowrap}
.brand-mark{width:26px;height:26px;border-radius:8px;background:linear-gradient(135deg,var(--brand-700),var(--brand-500));position:relative;flex:none}
.brand-mark::after{content:"";position:absolute;inset:7px;border-radius:3px;background:var(--accent-500)}
.nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav a{position:relative;padding:9px 14px;font-size:15px;color:var(--text-1);border-radius:10px;transition:color .22s var(--ease)}
.nav a::after{content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;background:var(--accent-500);transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease)}
.nav a:hover{color:var(--brand-500)}
.nav a:hover::after,.nav a.is-active::after{transform:scaleX(1)}
.nav a.is-active{color:var(--brand-700);font-weight:700}
.header-cta{margin-left:8px}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);background:var(--white);
  border-radius:12px;align-items:center;justify-content:center;flex-direction:column;gap:4px;margin-left:auto;
}
.nav-toggle span{display:block;width:16px;height:2px;background:var(--brand-700);border-radius:2px;transition:transform .24s var(--ease),opacity .24s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.drawer{
  position:fixed;inset:60px 0 0 0;background:var(--paper);z-index:70;
  padding:12px 24px 32px;display:none;flex-direction:column;
  overflow-y:auto;
}
.drawer.is-open{display:flex}
.drawer a.drawer-link{
  display:block;font-size:18px;line-height:56px;color:var(--text-1);
  border-bottom:1px solid var(--line);
}
.drawer a.drawer-link.is-active{color:var(--brand-700);font-weight:700}
.drawer .drawer-foot{margin-top:auto;padding-top:24px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-sm);border:0;
  font-size:15px;font-weight:700;text-decoration:none;
  transition:transform .22s var(--ease),background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.btn-primary{background:var(--accent-500);color:var(--white)}
.btn-primary:hover{background:#ED4F14;color:var(--white);transform:translateY(-1px)}
.btn-secondary{background:transparent;color:var(--brand-700);border:1.5px solid var(--brand-700)}
.btn-secondary:hover{background:var(--brand-700);color:var(--white)}
.btn-ghost{background:transparent;color:var(--brand-700);padding:0 4px;height:auto}
.btn-ghost .arrow{transition:transform .22s var(--ease)}
.btn-ghost:hover .arrow{transform:translateX(3px)}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.btn-lg{height:54px;padding:0 30px;font-size:16px}
.btn-block{width:100%}

/* ---------- 页头 ---------- */
.page-head{
  background:var(--paper-2);
  border-bottom:1px solid var(--line);
  padding:56px 0 48px;
  position:relative;
  overflow:hidden;
}
.page-head::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(to right,rgba(11,43,36,.05) 1px,transparent 1px),
                   linear-gradient(to bottom,rgba(11,43,36,.05) 1px,transparent 1px);
  background-size:72px 72px;
  opacity:.9;pointer-events:none;
}
.page-head::after{
  content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;
  border-radius:50%;border:1px solid rgba(31,122,95,.22);pointer-events:none;
}
.page-head .container{position:relative;z-index:1;max-width:1200px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--accent-050);color:var(--accent-ink);
  border-radius:999px;padding:5px 14px;font-size:13px;font-weight:700;margin-bottom:20px;
}
.page-head h1{
  font-size:clamp(30px,6vw,56px);font-weight:800;line-height:1.15;letter-spacing:-0.02em;
  margin-bottom:18px;color:var(--brand-900);
}
.lede{font-size:18px;line-height:1.85;color:var(--text-2);max-width:760px;margin:0}
.head-stats{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;
  margin-top:36px;padding-top:28px;border-top:1px solid var(--line);max-width:820px;
}
.head-stats .stat-num{font-size:28px;font-weight:800;color:var(--brand-700);line-height:1.2}
.head-stats .stat-label{font-size:13px;color:var(--text-2);margin-top:4px}

/* ---------- 两栏主体 ---------- */
.layout{
  display:grid;grid-template-columns:250px minmax(0,1fr);gap:56px;
  padding:64px 0 0;align-items:start;
}
.toc{position:sticky;top:104px}
.toc-title{
  font-size:13px;font-weight:700;color:var(--text-2);letter-spacing:.08em;margin-bottom:12px;
}
.toc-list{list-style:none;margin:0;padding:0;border-left:1px solid var(--line)}
.toc-list li{margin:0}
.toc-list a{
  display:block;padding:9px 0 9px 16px;margin-left:-1px;
  font-size:14px;color:var(--text-2);border-left:2px solid transparent;
  transition:color .22s var(--ease),border-color .22s var(--ease);
}
.toc-list a:hover{color:var(--brand-700)}
.toc-list a.is-current{color:var(--brand-700);font-weight:700;border-left-color:var(--accent-500)}
.toc-note{
  margin-top:24px;background:var(--white);border:1px solid var(--line);
  border-radius:var(--radius);padding:18px;box-shadow:var(--shadow-1);
}
.toc-note p{font-size:13px;line-height:1.7;color:var(--text-2);margin:0 0 12px}

.article-body{max-width:760px}
.section{margin-bottom:64px}
.section:last-child{margin-bottom:0}
.section-tag{
  display:inline-block;font-family:ui-monospace,Inter,monospace;font-size:13px;
  color:var(--brand-500);letter-spacing:.14em;margin-bottom:10px;font-weight:700;
}
.section h2{font-size:clamp(24px,3.4vw,36px);font-weight:700;line-height:1.25;margin-bottom:18px;color:var(--brand-900)}
.section h3{font-size:20px;font-weight:700;line-height:1.4;margin:32px 0 12px}
.section p{color:var(--text-1)}
.muted{color:var(--text-2)}
.figure{margin:28px 0;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-1);background:var(--white)}
.figure img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .32s var(--ease)}
.figure:hover img{transform:scale(1.03)}
.figure figcaption{font-size:13px;color:var(--text-2);padding:10px 16px;border-top:1px solid var(--line);background:var(--paper)}
.param-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.param-list li{
  display:flex;gap:18px;padding:14px 0;border-bottom:1px solid var(--line);
  font-size:15px;line-height:1.75;margin:0;
}
.param-list .k{
  flex:0 0 132px;color:var(--brand-700);font-weight:700;font-size:14px;
}
.tag{
  display:inline-block;background:var(--accent-050);color:var(--accent-ink);
  border-radius:999px;padding:3px 12px;font-size:13px;font-weight:700;
}

/* ---------- 时间轴 ---------- */
.timeline{list-style:none;margin:24px 0 0;padding:0 0 0 24px;border-left:1px solid var(--line)}
.timeline li{position:relative;padding:0 0 28px 22px;margin:0}
.timeline li:last-child{padding-bottom:0}
.timeline li::before{
  content:"";position:absolute;left:-30px;top:8px;width:11px;height:11px;border-radius:50%;
  background:var(--white);border:2px solid var(--brand-500);
}
.timeline .tl-time{
  display:block;font-family:ui-monospace,Inter,monospace;font-variant-numeric:tabular-nums;
  font-size:13px;color:var(--brand-500);letter-spacing:.06em;margin-bottom:2px;font-weight:700;
}
.timeline .tl-title{font-weight:700;font-size:16px;color:var(--text-1)}
.timeline .tl-desc{font-size:15px;color:var(--text-2);margin:2px 0 0}

/* ---------- 步骤条 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;list-style:none;margin:28px 0 0;padding:0}
.steps li{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 20px;box-shadow:var(--shadow-1);margin:0;
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.steps li:hover{transform:translateY(-4px);border-color:var(--brand-500);box-shadow:var(--shadow-2)}
.step-no{
  display:block;font-family:ui-monospace,Inter,monospace;font-size:28px;font-weight:800;
  color:var(--brand-500);opacity:.28;line-height:1;margin-bottom:12px;
}
.steps h3{font-size:17px;margin:0 0 8px}
.steps p{font-size:14px;line-height:1.7;color:var(--text-2);margin:0}

/* ---------- 表格 ---------- */
.table-wrap{
  border:1px solid var(--line);border-radius:var(--radius);overflow-x:auto;
  background:var(--white);box-shadow:var(--shadow-1);margin-top:24px;
}
table.data-table{width:100%;border-collapse:collapse;min-width:660px;font-size:15px}
table.data-table th{
  background:var(--paper-2);text-align:left;font-size:13px;font-weight:700;color:var(--text-2);
  padding:14px 18px;border-bottom:1px solid var(--line);letter-spacing:.04em;white-space:nowrap;
}
table.data-table td{
  padding:16px 18px;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.7;
}
table.data-table tbody tr:last-child td{border-bottom:0}
table.data-table tbody tr:hover td{background:#FCFBF8}
table.data-table td.strong{font-weight:700;color:var(--brand-700)}

/* ---------- 提示卡 ---------- */
.note-card{
  background:var(--white);border:1px solid var(--line);border-left:3px solid var(--brand-700);
  border-radius:var(--radius);padding:22px 24px;box-shadow:var(--shadow-1);margin-top:24px;
}
.note-card h3{margin:0 0 8px;font-size:17px}
.note-card p{margin:0;font-size:15px;color:var(--text-2)}
.warn-card{border-left-color:var(--accent-500)}

/* ---------- 常问 ---------- */
.faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:28px}
.faq-item{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 24px;box-shadow:var(--shadow-1);
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.faq-item:hover{transform:translateY(-4px);border-color:var(--brand-500);box-shadow:var(--shadow-2)}
.faq-item h3{font-size:17px;margin:0 0 10px}
.faq-item p{font-size:15px;line-height:1.8;color:var(--text-2);margin:0}

/* ---------- CTA 通栏 ---------- */
.cta-band{
  background:var(--brand-900);color:var(--white);margin-top:88px;
  padding:72px 0;position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;bottom:-160px;width:360px;height:360px;border-radius:50%;
  border:1px solid rgba(255,231,220,.16);
}
.cta-inner{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:40px;align-items:center;position:relative;z-index:1}
.cta-inner h2{font-size:clamp(24px,3.4vw,34px);font-weight:700;color:var(--white);margin-bottom:14px;line-height:1.3}
.cta-inner p{color:rgba(255,255,255,.78);margin:0;font-size:16px;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-band .btn-secondary{color:var(--white);border-color:rgba(255,255,255,.6)}
.cta-band .btn-secondary:hover{background:var(--white);color:var(--brand-900);border-color:var(--white)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.8);padding:64px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:48px}
.site-footer .brand{color:var(--white);margin-bottom:16px}
.site-footer p{line-height:1.8;color:rgba(255,255,255,.72);margin:0 0 12px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--white);margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin:0 0 10px}
.footer-col a{color:rgba(255,255,255,.78);font-size:14px}
.footer-col a:hover{color:var(--accent-050)}
.footer-contact li{color:rgba(255,255,255,.78);margin-bottom:10px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:var(--accent-050)}

/* ---------- 入场动画 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .32s var(--ease),transform .32s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .layout{grid-template-columns:1fr;gap:36px;padding-top:48px}
  .toc{position:static}
  .toc-list{display:flex;overflow-x:auto;border-left:0;border-bottom:1px solid var(--line);padding-bottom:2px}
  .toc-list a{border-left:0;border-bottom:2px solid transparent;padding:10px 14px;white-space:nowrap}
  .toc-list a.is-current{border-left:0;border-bottom-color:var(--accent-500)}
  .toc-note{display:none}
  .article-body{max-width:none}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-inner{grid-template-columns:1fr}
}
@media (max-width:767px){
  .nav{display:none}
  .header-cta{display:none}
  .nav-toggle{display:flex}
  .header-inner{height:60px;gap:12px}
  .drawer{inset:60px 0 0 0}
  .page-head{padding:40px 0 36px}
  .lede{font-size:16px}
  .head-stats{grid-template-columns:1fr;gap:16px}
  .head-stats .stat-num{font-size:24px}
  .section{margin-bottom:48px}
  .steps{grid-template-columns:1fr}
  .faq-grid{grid-template-columns:1fr}
  .cta-band{margin-top:56px;padding:56px 0}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .param-list li{flex-direction:column;gap:4px}
  .param-list .k{flex:none}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .page-head h1{font-size:30px}
  .cta-actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}