/* roulang page: index */
:root{
  --ink-900:#101B19;
  --ink-700:#2C3A38;
  --ink-500:#5B6663;
  --ink-300:#8A938F;
  --brand-700:#1D3B36;
  --brand-500:#2F5A52;
  --brand-100:#E7EFEC;
  --accent-600:#D2552A;
  --accent-100:#F7E8E0;
  --bg-paper:#F6F4F0;
  --bg-card:#FFFFFF;
  --bg-soft:#FAF8F5;
  --bg-dark:#0E1A17;
  --bd:#E5E1D9;
  --bd-soft:#EDE9E2;
  --ok:#2F7D5E;
  --radius-card:14px;
  --radius-lg:16px;
  --radius-btn:10px;
  --radius-pill:999px;
  --sh-1:0 1px 2px rgba(16,27,25,.05);
  --sh-2:0 10px 30px -12px rgba(16,27,25,.14);
  --ease:cubic-bezier(.22,.61,.36,1);
  --sect:112px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;line-height:1.8;color:var(--ink-700);background:var(--bg-paper);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--accent-600);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
@media (min-width:1440px){.container{max-width:1280px}}
@media (max-width:1023px){.container{padding:0 24px}}
@media (max-width:520px){.container{padding:0 20px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(246,244,240,.94);
  backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--bd);background:rgba(246,244,240,.97)}
.nav-inner{display:flex;align-items:center;gap:20px;height:72px;transition:height .2s var(--ease)}
.site-header.is-scrolled .nav-inner{height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;font-weight:700;font-size:18px;letter-spacing:-.01em;color:var(--ink-900);transition:opacity .2s}
.brand:hover{opacity:.78}
.brand svg{width:20px;height:20px;color:var(--brand-500);flex:0 0 auto}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:14px}
.nav-links a{position:relative;font-size:15px;color:var(--ink-700);padding:6px 0;transition:color .2s var(--ease)}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--accent-600);transition:width .28s var(--ease)}
.nav-links a:hover{color:var(--ink-900)}
.nav-links a:hover::after{width:100%}
.nav-links a.active{color:var(--ink-900);font-weight:600}
.nav-links a.active::after{width:100%}
.nav-tools{display:flex;align-items:center;gap:10px;margin-left:auto}
.nav-search{
  display:flex;align-items:center;gap:8px;width:262px;height:40px;padding:0 10px 0 14px;
  border-radius:var(--radius-pill);background:var(--bd-soft);
  border:1px solid transparent;transition:background .2s,border-color .2s,box-shadow .2s;
}
.nav-search:focus-within{background:#fff;border-color:var(--brand-500);box-shadow:0 0 0 2px rgba(47,90,82,.16)}
.nav-search svg{width:16px;height:16px;color:var(--ink-300);flex:0 0 auto}
.nav-search input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:14px}
.nav-search input::placeholder{color:var(--ink-300)}
.kbd{font-size:12px;line-height:1.4;color:var(--ink-300);border:1px solid var(--bd);background:#fff;border-radius:6px;padding:1px 6px}
.nav-icon{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--radius-btn);border:1px solid var(--bd);background:#fff;color:var(--ink-700);
  transition:border-color .2s,color .2s,transform .2s var(--ease);
}
.nav-icon:hover{border-color:var(--brand-500);color:var(--brand-700);transform:translateY(-1px)}
.nav-icon svg{width:17px;height:17px}
.nav-toggle{display:none;width:40px;height:40px;border:1px solid var(--bd);border-radius:var(--radius-btn);background:#fff;align-items:center;justify-content:center;color:var(--ink-700)}
.nav-toggle svg{width:18px;height:18px}

/* ---------- buttons / badges / links ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:500;border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--accent-600);color:#fff}
.btn-primary:hover{background:#BB4720;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{border-color:var(--brand-500);color:var(--brand-700);background:transparent}
.btn-ghost:hover{background:var(--brand-100)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:var(--radius-pill);font-size:12px;font-weight:500;background:var(--accent-100);color:var(--accent-600);white-space:nowrap}
.badge-brand{background:var(--brand-100);color:var(--brand-700)}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;color:var(--accent-600);transition:color .2s}
.text-link .arrow{transition:transform .2s var(--ease)}
.text-link:hover{color:#B4451F}
.text-link:hover .arrow{transform:translateX(4px)}

/* ---------- hero ---------- */
.hero{padding:64px 0 96px;position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(0,.98fr);gap:64px;align-items:center;min-height:560px}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.04em;color:var(--brand-700);background:var(--brand-100);border-radius:var(--radius-pill);height:30px;padding:0 14px}
.hero h1{
  margin-top:24px;
  font-size:clamp(32px,4.6vw,54px);line-height:1.14;font-weight:700;
  letter-spacing:-.02em;color:var(--ink-900);
}
.hero-sub{margin-top:22px;font-size:17px;line-height:1.8;color:var(--ink-500);max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-points{display:flex;flex-wrap:wrap;margin-top:32px}
.hero-points li{font-size:13px;letter-spacing:.02em;color:var(--ink-500);padding:0 16px;border-left:1px solid var(--bd)}
.hero-points li:first-child{padding-left:0;border-left:0}
.hero-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius-lg);box-shadow:var(--sh-2)}

/* ---------- section shell ---------- */
.section{padding:var(--sect) 0}
.section-soft{background:var(--bg-soft)}
.section-head{display:flex;align-items:center;gap:24px;margin-bottom:16px}
.section-head h2{font-size:clamp(24px,2.6vw,34px);line-height:1.2;font-weight:600;letter-spacing:-.01em;color:var(--ink-900);white-space:nowrap}
.section-rule{flex:1;height:1px;background:var(--bd)}
.section-lead{font-size:14px;color:var(--ink-500);margin-bottom:44px;max-width:720px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:56px;align-items:center}

/* ---------- cards ---------- */
.card{background:var(--bg-card);border:1px solid var(--bd);border-radius:var(--radius-card);overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--sh-1);transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#DCD7CC}
.card:focus-visible{outline:2px solid var(--accent-600);outline-offset:2px}
.card-media{overflow:hidden;aspect-ratio:16/9;background:linear-gradient(135deg,var(--brand-500),var(--bg-paper))}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-title{font-size:19px;line-height:1.4;font-weight:600;color:var(--ink-900);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-desc{font-size:14.5px;line-height:1.75;color:var(--ink-500);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--ink-300);padding-top:8px}
.card-text{padding:28px;display:flex;flex-direction:column;gap:14px;background:var(--bg-card);border:1px solid var(--bd);border-radius:var(--radius-card);box-shadow:var(--sh-1);transition:transform .2s var(--ease),box-shadow .2s var(--ease)}
.card-text:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.num-mark{font-size:34px;line-height:1;font-weight:700;color:var(--brand-500);letter-spacing:-.02em;opacity:.55}

/* ---------- story split ---------- */
.story-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-lg);box-shadow:var(--sh-1)}
.story-body h2{font-size:clamp(24px,2.6vw,34px);line-height:1.25;font-weight:600;letter-spacing:-.01em;color:var(--ink-900);margin-bottom:18px}
.story-body p{font-size:16px;line-height:1.85;color:var(--ink-500)}
.story-list{margin-top:28px;border-top:1px solid var(--bd-soft)}
.story-list li{display:grid;grid-template-columns:56px 1fr;gap:16px;padding:18px 0;border-bottom:1px solid var(--bd-soft)}
.story-list .idx{font-size:14px;font-weight:600;color:var(--accent-600);letter-spacing:.04em;padding-top:3px}
.story-list h3{font-size:17px;font-weight:600;color:var(--ink-900);margin-bottom:6px}
.story-list p{font-size:14.5px;color:var(--ink-500);line-height:1.75}

/* ---------- news list ---------- */
.news-list{border-top:1px solid var(--bd-soft)}
.news-row{
  display:grid;grid-template-columns:92px minmax(0,1fr) auto;gap:24px;align-items:center;
  padding:22px 10px;border-bottom:1px solid var(--bd-soft);transition:background .2s var(--ease);
}
.news-row:hover{background:var(--bg-soft)}
.news-row:hover .arrow{transform:translateX(4px)}
.news-date{font-size:13px;font-weight:600;color:var(--brand-500);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.news-main{display:flex;flex-direction:column;gap:6px;min-width:0}
.news-title{font-size:17px;font-weight:600;color:var(--ink-900);line-height:1.5;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.news-summary{font-size:14px;color:var(--ink-500);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.news-meta{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.arrow{transition:transform .2s var(--ease);color:var(--ink-300)}
.empty-state{
  min-height:200px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;
  border:1px dashed var(--bd);border-radius:var(--radius-card);background:var(--bg-card);
}
.empty-state p{font-size:15px;color:var(--ink-500)}

/* ---------- dark band ---------- */
.dark-band{background:var(--bg-dark);color:rgba(255,255,255,.76);padding:88px 0}
.dark-band h2{font-size:clamp(22px,2.4vw,30px);line-height:1.25;color:#fff;font-weight:600;letter-spacing:-.01em;margin-bottom:14px}
.dark-band .dark-lead{font-size:14px;color:rgba(255,255,255,.6);max-width:640px}
.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;margin-top:52px}
.stat-item{border:1px solid rgba(255,255,255,.08);border-radius:var(--radius-card);padding:28px 24px}
.stat-num{font-size:clamp(32px,3.4vw,46px);line-height:1;font-weight:700;color:#E87443;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.stat-label{margin-top:14px;font-size:14px;color:rgba(255,255,255,.72)}
.stat-line{margin-top:56px;padding-top:24px;border-top:1px solid rgba(255,255,255,.08);display:flex;flex-wrap:wrap;gap:16px 28px;font-size:13px;color:rgba(255,255,255,.55)}

/* ---------- faq ---------- */
.faq-wrap{max-width:860px}
.faq-item{border-bottom:1px solid var(--bd)}
.faq-item:first-child{border-top:1px solid var(--bd)}
.faq-q{
  width:100%;min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:14px 0;text-align:left;font-size:17px;font-weight:500;color:var(--ink-900);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--brand-700)}
.faq-q .plus{flex:0 0 auto;font-size:22px;line-height:1;color:var(--accent-600);transition:transform .28s var(--ease)}
.faq-item.is-open .plus{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease)}
.faq-item.is-open .faq-a{max-height:300px}
.faq-a p{padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--ink-500);max-width:760px}

/* ---------- cta ---------- */
.cta-panel{
  background:var(--bg-card);border:1px solid var(--bd);border-radius:var(--radius-lg);
  padding:56px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:center;
  box-shadow:var(--sh-1);
}
.cta-panel h2{font-size:clamp(22px,2.4vw,30px);line-height:1.3;font-weight:600;letter-spacing:-.01em;color:var(--ink-900);margin-bottom:14px}
.cta-panel p{font-size:15px;color:var(--ink-500)}
.subscribe-form{display:flex;gap:12px}
.subscribe-form input{
  flex:1;min-width:0;height:48px;padding:0 16px;border-radius:var(--radius-btn);
  border:1px solid var(--bd);background:#fff;outline:none;font-size:15px;
  transition:border-color .2s,box-shadow .2s;
}
.subscribe-form input::placeholder{color:var(--ink-300)}
.subscribe-form input:focus{border-color:var(--accent-600);box-shadow:0 0 0 2px rgba(210,85,42,.16)}
.form-note{
  display:none;align-items:center;gap:10px;margin-top:16px;padding:12px 16px;
  border-left:4px solid var(--ok);background:#EAF4EF;color:var(--brand-700);
  border-radius:8px;font-size:14px;line-height:1.6;
}
.form-note.is-visible{display:flex}
.form-note svg{width:16px;height:16px;flex:0 0 auto}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-dark);color:rgba(255,255,255,.7);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff;letter-spacing:-.01em}
.footer-brand svg{width:20px;height:20px;color:#7FB8A6}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:280px}
.footer-icons{display:flex;gap:10px;margin-top:22px}
.footer-icons span{
  width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.12);border-radius:9px;color:rgba(255,255,255,.6);
  transition:color .2s,border-color .2s;
}
.footer-icons span:hover{color:#fff;border-color:rgba(255,255,255,.34)}
.footer-icons svg{width:16px;height:16px}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px}
.footer-col a{display:block;font-size:14px;padding:6px 0;color:rgba(255,255,255,.7);transition:color .2s}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-col p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.7)}
.footer-bottom{
  margin-top:56px;padding:24px 0;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.48);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--ease),transform .42s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- drawer ---------- */
.nav-mask{
  position:fixed;inset:0;background:rgba(16,27,25,.4);z-index:90;
  opacity:0;visibility:hidden;transition:opacity .3s var(--ease),visibility .3s;
}
.nav-mask.is-open{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:280px;max-width:84vw;z-index:100;
  background:var(--bg-card);border-radius:8px 0 0 8px;padding:24px;
  transform:translateX(100%);transition:transform .3s var(--ease);overflow-y:auto;
}
.nav-drawer.is-open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer-title{font-size:14px;font-weight:600;color:var(--ink-900)}
.drawer-close{width:36px;height:36px;border:1px solid var(--bd);border-radius:9px;display:inline-flex;align-items:center;justify-content:center;color:var(--ink-700)}
.drawer-close svg{width:16px;height:16px}
.drawer-link{display:block;font-size:15px;color:var(--ink-700);padding:14px 0;border-bottom:1px solid var(--bd-soft);transition:color .2s,padding-left .2s var(--ease)}
.drawer-link:hover{color:var(--brand-700);padding-left:6px}
.drawer-link.active{color:var(--ink-900);font-weight:600}
.drawer-search{display:flex;align-items:center;gap:8px;height:44px;padding:0 14px;margin:20px 0;border-radius:var(--radius-pill);background:var(--bd-soft);border:1px solid transparent}
.drawer-search:focus-within{background:#fff;border-color:var(--brand-500)}
.drawer-search svg{width:16px;height:16px;color:var(--ink-300)}
.drawer-search input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:14px}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  :root{--sect:80px}
  .nav-links{display:none}
  .nav-search{display:none}
  .nav-icon{display:none}
  .nav-toggle{display:inline-flex}
  .hero{padding:48px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:40px;min-height:0}
  .hero-sub{max-width:none}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-2{grid-template-columns:1fr;gap:32px}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-panel{grid-template-columns:1fr;gap:28px;padding:40px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px}
}
@media (max-width:767px){
  .news-row{grid-template-columns:1fr;gap:10px;align-items:start;padding:20px 6px}
  .news-meta{justify-content:flex-start}
  .news-title,.news-summary{white-space:normal;display:-webkit-box;-webkit-box-orient:vertical;overflow:hidden}
  .news-title{-webkit-line-clamp:2}
  .news-summary{-webkit-line-clamp:2}
}
@media (max-width:520px){
  :root{--sect:56px}
  body{font-size:15.5px}
  .brand{font-size:16px}
  .grid-3,.grid-4,.stat-grid{grid-template-columns:1fr}
  .hero-actions .btn{width:100%}
  .hero h1{font-size:clamp(26px,7vw,34px)}
  .subscribe-form{flex-direction:column}
  .subscribe-form .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .cta-panel{padding:28px 20px}
  .section-head{gap:14px}
  .section-head h2{white-space:normal}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none}
  .card:hover,.card-text:hover,.btn:hover{transform:none}
  .card:hover .card-media img{transform:none}
}

/* roulang page: article */
:root{
  --ink-900:#101B19;
  --ink-700:#2C3A38;
  --ink-500:#5B6663;
  --ink-300:#8A938F;
  --brand-700:#1D3B36;
  --brand-500:#2F5A52;
  --brand-100:#E7EFEC;
  --accent-600:#D2552A;
  --accent-100:#F7E8E0;
  --bg-paper:#F6F4F0;
  --bg-card:#FFFFFF;
  --bg-soft:#FAF8F5;
  --bg-dark:#0E1A17;
  --bd:#E5E1D9;
  --bd-soft:#EDE9E2;
  --ok:#2F7D5E;
  --warn:#C08A2E;
  --err:#B23A2E;
  --r-sm:10px;
  --r-card:14px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,27,25,.05);
  --sh-2:0 10px 30px -12px rgba(16,27,25,.14);
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur-1:200ms;
  --dur-2:280ms;
  --dur-3:420ms;
  --space-section:112px;
}
*,*::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:17px;
  line-height:1.8;
  color:var(--ink-700);
  background:var(--bg-paper);
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:600;color:var(--ink-900);letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent-600);outline-offset:2px;border-radius:4px}
::selection{background:var(--brand-100);color:var(--brand-700)}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
}
@media (min-width:1440px){
  .container{max-width:1280px}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--r-sm);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  white-space:nowrap;
  transition:transform var(--dur-1) var(--ease),background-color var(--dur-1) var(--ease),color var(--dur-1) var(--ease),border-color var(--dur-1) var(--ease),box-shadow var(--dur-1) var(--ease);
}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--accent-600);color:#fff}
.btn-primary:hover{background:#b8461f;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{border:1px solid var(--brand-500);color:var(--brand-700);background:transparent}
.btn-ghost:hover{background:var(--brand-100);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;transform:none}
.btn-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--accent-600);
  font-weight:600;
  font-size:15px;
  transition:color var(--dur-1) var(--ease);
}
.btn-link .arrow{transition:transform var(--dur-1) var(--ease)}
.btn-link:hover{color:#b8461f}
.btn-link:hover .arrow{transform:translateX(4px)}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:var(--r-pill);
  font-size:12px;
  font-weight:500;
  letter-spacing:.02em;
  background:var(--accent-100);
  color:var(--accent-600);
}
.badge-brand{background:var(--brand-100);color:var(--brand-700)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(246,244,240,.88);
  backdrop-filter:saturate(180%) blur(12px);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color var(--dur-1) var(--ease),background-color var(--dur-1) var(--ease);
}
.site-header.is-scrolled{
  border-bottom-color:var(--bd);
  background:rgba(246,244,240,.95);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:72px;
  transition:height var(--dur-1) var(--ease);
}
.site-header.is-scrolled .nav-inner{height:64px}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--ink-900);
  flex:none;
}
.brand svg{width:20px;height:20px;color:var(--brand-700);flex:none}
.nav-links{
  display:flex;
  align-items:center;
  gap:28px;
  margin-left:6px;
}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;
  color:var(--ink-700);
  transition:color var(--dur-1) var(--ease);
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--accent-600);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--dur-2) var(--ease);
}
.nav-links a:hover{color:var(--ink-900)}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1)}
.nav-links a.active{color:var(--ink-900);font-weight:600}
.nav-tools{
  display:flex;
  align-items:center;
  gap:12px;
  margin-left:auto;
}
.nav-search{
  display:flex;
  align-items:center;
  gap:8px;
  width:260px;
  height:40px;
  padding:0 12px;
  border-radius:var(--r-pill);
  background:var(--bd-soft);
  border:1px solid transparent;
  transition:background-color var(--dur-1) var(--ease),border-color var(--dur-1) var(--ease),box-shadow var(--dur-1) var(--ease);
}
.nav-search svg{width:16px;height:16px;color:var(--ink-300);flex:none}
.nav-search input{
  flex:1;
  min-width:0;
  height:100%;
  border:0;
  outline:none;
  background:transparent;
  font-size:14px;
  color:var(--ink-900);
}
.nav-search input::placeholder{color:var(--ink-300)}
.nav-search:focus-within{
  background:#fff;
  border-color:var(--brand-500);
  box-shadow:0 0 0 2px rgba(47,90,82,.16);
}
.kbd{
  flex:none;
  font-family:var(--font-num);
  font-size:12px;
  line-height:1;
  padding:4px 6px;
  border-radius:6px;
  border:1px solid var(--bd);
  background:#fff;
  color:var(--ink-300);
}
.nav-icon{
  width:40px;
  height:40px;
  display:grid;
  place-items:center;
  border-radius:var(--r-sm);
  border:1px solid var(--bd);
  background:var(--bg-card);
  color:var(--ink-700);
  transition:border-color var(--dur-1) var(--ease),color var(--dur-1) var(--ease),transform var(--dur-1) var(--ease);
}
.nav-icon svg{width:18px;height:18px}
.nav-icon:hover{border-color:var(--brand-500);color:var(--brand-700);transform:translateY(-1px)}
.nav-toggle{
  display:none;
  width:40px;
  height:40px;
  place-items:center;
  border-radius:var(--r-sm);
  border:1px solid var(--bd);
  background:var(--bg-card);
  color:var(--ink-700);
}
.nav-toggle svg{width:20px;height:20px}

/* ---------- 移动端抽屉 ---------- */
.nav-drawer{position:fixed;inset:0;z-index:90;visibility:hidden;pointer-events:none}
.nav-drawer.open{visibility:visible;pointer-events:auto}
.drawer-mask{
  position:absolute;
  inset:0;
  background:rgba(16,27,25,.4);
  opacity:0;
  transition:opacity var(--dur-2) var(--ease);
}
.nav-drawer.open .drawer-mask{opacity:1}
.drawer-panel{
  position:absolute;
  top:0;right:0;
  width:280px;
  max-width:86vw;
  height:100%;
  padding:24px 20px;
  background:var(--bg-card);
  border-radius:8px 0 0 8px;
  box-shadow:-12px 0 40px -20px rgba(16,27,25,.4);
  transform:translateX(100%);
  transition:transform 300ms var(--ease);
  display:flex;
  flex-direction:column;
  gap:6px;
  overflow-y:auto;
}
.nav-drawer.open .drawer-panel{transform:translateX(0)}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:16px;
  margin-bottom:8px;
  border-bottom:1px solid var(--bd-soft);
}
.drawer-title{font-size:15px;font-weight:700;color:var(--ink-900)}
.drawer-close{
  width:34px;height:34px;
  display:grid;place-items:center;
  border-radius:8px;
  border:1px solid var(--bd);
  font-size:15px;
  color:var(--ink-500);
}
.drawer-close:hover{border-color:var(--brand-500);color:var(--brand-700)}
.drawer-links{display:flex;flex-direction:column;margin-bottom:16px}
.drawer-links a{
  padding:14px 4px;
  font-size:15px;
  color:var(--ink-700);
  border-bottom:1px solid var(--bd-soft);
}
.drawer-links a:hover{color:var(--brand-700)}
.drawer-cta{width:100%}

/* ---------- 页面主体 ---------- */
.page-main{padding-bottom:24px}
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:28px 0 18px;
  font-size:13px;
  letter-spacing:.02em;
  color:var(--ink-300);
}
.crumbs a{color:var(--ink-500);transition:color var(--dur-1) var(--ease)}
.crumbs a:hover{color:var(--brand-700)}
.crumbs .sep{color:var(--bd)}
.crumbs .now{
  color:var(--ink-500);
  max-width:340px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}

.article-head{max-width:860px}
.article-title{
  font-size:clamp(28px,3.6vw,44px);
  line-height:1.22;
  font-weight:700;
  letter-spacing:-.02em;
  margin:18px 0 16px;
  color:var(--ink-900);
}
.meta-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-size:13px;
  letter-spacing:.02em;
  color:var(--ink-300);
}
.meta-row .dot{color:var(--bd)}
.meta-row .num{font-family:var(--font-num)}

.article-cover{
  margin-top:30px;
  border-radius:var(--r-lg);
  overflow:hidden;
  aspect-ratio:16/9;
  background:linear-gradient(135deg,var(--brand-700) 0%,#3B6A60 52%,#F6F4F0 100%);
  border:1px solid var(--bd);
}
.article-cover img{width:100%;height:100%;object-fit:cover}

/* ---------- 文章主体 + 侧栏 ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,720px) 280px;
  gap:56px;
  justify-content:center;
  margin-top:52px;
  align-items:start;
}
.article-body{
  font-size:17px;
  line-height:1.9;
  color:var(--ink-700);
  min-width:0;
}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.4em}
.article-body h2{
  font-size:24px;
  line-height:1.4;
  font-weight:600;
  color:var(--ink-900);
  margin:40px 0 16px;
  padding-left:14px;
  position:relative;
  scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.26em;
  bottom:.26em;
  width:3px;
  border-radius:2px;
  background:var(--accent-600);
}
.article-body h3{
  font-size:20px;
  line-height:1.45;
  color:var(--ink-900);
  margin:32px 0 12px;
  scroll-margin-top:96px;
}
.article-body a{
  color:var(--brand-700);
  border-bottom:1px solid rgba(29,59,54,.32);
  transition:color var(--dur-1) var(--ease),border-color var(--dur-1) var(--ease);
}
.article-body a:hover{color:var(--accent-600);border-bottom-color:var(--accent-600)}
.article-body strong{color:var(--ink-900);font-weight:600}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:1.35em}
.article-body ul li{list-style:disc;margin:.42em 0}
.article-body ol li{list-style:decimal;margin:.42em 0}
.article-body blockquote{
  margin:26px 0;
  padding:16px 22px;
  border-left:4px solid var(--brand-500);
  background:var(--bg-soft);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:var(--ink-700);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{
  border-radius:12px;
  margin:26px 0;
  width:100%;
}
.article-body figure{margin:26px 0}
.article-body figure img{margin:0 0 10px}
.article-body figcaption{
  font-size:13px;
  text-align:center;
  color:var(--ink-300);
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:26px 0;
  font-size:15px;
  border:1px solid var(--bd);
  border-radius:var(--r-sm);
  overflow:hidden;
}
.article-body th{
  background:var(--brand-100);
  color:var(--brand-700);
  text-align:left;
  font-weight:600;
  padding:12px 14px;
  border-bottom:1px solid var(--bd);
  white-space:nowrap;
}
.article-body td{
  padding:12px 14px;
  border-bottom:1px solid var(--bd-soft);
  vertical-align:top;
}
.article-body tbody tr:nth-child(even){background:var(--bg-soft)}
.article-body tbody tr:last-child td{border-bottom:0}
.article-body hr{
  border:0;
  border-top:1px solid var(--bd-soft);
  margin:36px 0;
}

/* ---------- 侧栏 ---------- */
.article-side{
  position:sticky;
  top:96px;
  display:flex;
  flex-direction:column;
  gap:20px;
  min-width:0;
}
.side-card{
  background:var(--bg-card);
  border:1px solid var(--bd);
  border-radius:var(--r-card);
  padding:20px;
  box-shadow:var(--sh-1);
}
.side-card h4{
  font-size:13px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--ink-300);
  margin:0 0 14px;
}
.toc{display:flex;flex-direction:column;max-height:360px;overflow-y:auto}
.toc a{
  display:block;
  padding:7px 0 7px 12px;
  font-size:14px;
  line-height:1.55;
  color:var(--ink-700);
  border-left:2px solid var(--bd-soft);
  transition:color var(--dur-1) var(--ease),border-color var(--dur-1) var(--ease);
}
.toc a:hover,.toc a.is-active{color:var(--brand-700);border-left-color:var(--accent-600)}
.toc a.lv3{padding-left:24px;font-size:13px;color:var(--ink-500)}
.toc-note{font-size:13px;color:var(--ink-300);line-height:1.7}
.side-links{display:flex;flex-direction:column}
.side-links a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:10px 0;
  font-size:14px;
  color:var(--ink-700);
  border-bottom:1px solid var(--bd-soft);
  transition:color var(--dur-1) var(--ease);
}
.side-links a:last-child{border-bottom:0}
.side-links a .arrow{color:var(--ink-300);transition:transform var(--dur-1) var(--ease),color var(--dur-1) var(--ease)}
.side-links a:hover{color:var(--accent-600)}
.side-links a:hover .arrow{transform:translateX(4px);color:var(--accent-600)}

/* ---------- 标签行 ---------- */
.tag-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:44px;
  padding-top:28px;
  border-top:1px solid var(--bd);
}
.tag{
  display:inline-flex;
  align-items:center;
  height:32px;
  padding:0 14px;
  border-radius:var(--r-pill);
  background:var(--brand-100);
  color:var(--brand-700);
  font-size:13px;
  transition:background-color var(--dur-1) var(--ease),color var(--dur-1) var(--ease);
}
.tag:hover{background:var(--brand-500);color:#fff}

/* ---------- 通用板块 ---------- */
.section{padding:72px 0 0}
.sec-head{
  display:flex;
  align-items:baseline;
  gap:20px;
  margin-bottom:32px;
}
.sec-head h2{
  font-size:clamp(22px,2.4vw,30px);
  font-weight:600;
  color:var(--ink-900);
  white-space:nowrap;
}
.sec-head .line{flex:1;height:1px;background:var(--bd)}
.sec-head .more{
  font-size:14px;
  color:var(--ink-500);
  display:inline-flex;
  align-items:center;
  gap:6px;
  transition:color var(--dur-1) var(--ease);
}
.sec-head .more:hover{color:var(--accent-600)}

/* ---------- 卡片 ---------- */
.grid-3{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.card{
  display:flex;
  flex-direction:column;
  background:var(--bg-card);
  border:1px solid var(--bd);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform var(--dur-1) var(--ease),box-shadow var(--dur-1) var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.card-media{
  aspect-ratio:16/9;
  overflow:hidden;
  background:linear-gradient(135deg,var(--brand-700) 0%,#48756B 55%,#F6F4F0 100%);
}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform 600ms var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:20px;
  flex:1;
}
.card-body h3{
  font-size:18px;
  line-height:1.45;
  color:var(--ink-900);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-body p{
  font-size:14px;
  line-height:1.7;
  color:var(--ink-500);
  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;
  padding-top:14px;
  border-top:1px solid var(--bd-soft);
  font-size:13px;
  color:var(--ink-300);
}
.card-foot .arrow{color:var(--accent-600);transition:transform var(--dur-1) var(--ease)}
.card:hover .card-foot .arrow{transform:translateX(4px)}

/* ---------- 上下板块双栏 ---------- */
.dual-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
}
.dual-card{
  display:flex;
  flex-direction:column;
  gap:8px;
  padding:24px;
  background:var(--bg-card);
  border:1px solid var(--bd);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  transition:transform var(--dur-1) var(--ease),box-shadow var(--dur-1) var(--ease),border-color var(--dur-1) var(--ease);
}
.dual-card:hover{transform:translateY(-2px);border-color:var(--brand-500);box-shadow:var(--sh-2)}
.dual-card .label{font-size:13px;color:var(--ink-300);letter-spacing:.02em}
.dual-card h3{font-size:18px;line-height:1.45;color:var(--ink-900)}
.dual-card p{font-size:14px;line-height:1.7;color:var(--ink-500)}

/* ---------- 空态 ---------- */
.empty-state{
  min-height:200px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:16px;
  padding:40px 24px;
  text-align:center;
  background:var(--bg-card);
  border:1px dashed var(--bd);
  border-radius:var(--r-card);
}
.empty-state p{font-size:15px;color:var(--ink-500)}

.back-row{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:40px;
}

/* ---------- CTA ---------- */
.cta-band{
  margin-top:88px;
  background:var(--bg-dark);
  border:1px solid rgba(255,255,255,.08);
  border-radius:20px;
  padding:56px;
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:44px;
  align-items:center;
}
.cta-band h2{
  color:#fff;
  font-size:clamp(24px,2.6vw,32px);
  line-height:1.3;
  margin-bottom:14px;
}
.cta-band p{color:rgba(255,255,255,.7);font-size:15px;max-width:560px;margin-bottom:22px}
.cta-points{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13px;color:rgba(255,255,255,.62)}
.cta-points span{display:inline-flex;align-items:center;gap:6px}
.cta-points span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent-600);display:inline-block}
.subscribe-form{display:flex;gap:12px}
.subscribe-form input{
  flex:1;
  min-width:0;
  height:48px;
  padding:0 16px;
  border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.06);
  color:#fff;
  font-size:15px;
  outline:none;
  transition:border-color var(--dur-1) var(--ease),box-shadow var(--dur-1) var(--ease),background-color var(--dur-1) var(--ease);
}
.subscribe-form input::placeholder{color:rgba(255,255,255,.45)}
.subscribe-form input:focus{
  background:rgba(255,255,255,.1);
  border-color:var(--accent-600);
  box-shadow:0 0 0 1px var(--accent-600);
}
.alert{
  display:flex;
  align-items:center;
  gap:10px;
  margin-top:16px;
  padding:12px 16px;
  border-left:4px solid var(--ok);
  background:rgba(47,125,94,.16);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  font-size:14px;
  color:#DFF3E9;
}
.alert[hidden]{display:none}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;
  background:var(--bg-dark);
  color:rgba(255,255,255,.7);
  padding:72px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-size:17px;
  font-weight:700;
  letter-spacing:-.01em;
}
.footer-brand svg{width:20px;height:20px;color:#fff;flex:none}
.footer-desc{font-size:14px;color:rgba(255,255,255,.58);margin:16px 0 18px;max-width:24em}
.footer-icons{display:flex;gap:10px}
.footer-icons span{
  width:34px;height:34px;
  display:grid;place-items:center;
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-sm);
  color:rgba(255,255,255,.66);
}
.footer-icons svg{width:16px;height:16px}
.footer-col h4{
  color:#fff;
  font-size:14px;
  font-weight:600;
  letter-spacing:.02em;
  margin-bottom:16px;
}
.footer-col a{
  display:block;
  padding:6px 0;
  font-size:14px;
  color:rgba(255,255,255,.68);
  transition:color var(--dur-1) var(--ease);
}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-col p{
  font-size:14px;
  color:rgba(255,255,255,.68);
  margin-bottom:10px;
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:12px 20px;
  justify-content:space-between;
  margin-top:56px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;
  color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .article-layout{gap:40px}
}
@media (max-width:1023px){
  :root{--space-section:80px}
  .container{padding:0 24px}
  .nav-links{display:none}
  .nav-search{display:none}
  .nav-icon{display:none}
  .nav-toggle{display:grid}
  .nav-tools{margin-left:auto}
  .article-layout{
    grid-template-columns:minmax(0,1fr);
    gap:36px;
    margin-top:40px;
  }
  .article-side{position:static;top:auto}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
  .cta-band{grid-template-columns:1fr;padding:40px;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  :root{--space-section:56px}
  body{font-size:16px}
  .container{padding:0 20px}
  .nav-inner{height:64px;gap:14px}
  .brand{font-size:15px}
  .brand span{max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .crumbs{padding:20px 0 14px}
  .crumbs .now{max-width:180px}
  .article-title{font-size:clamp(24px,6.4vw,30px)}
  .article-cover{margin-top:22px;border-radius:12px}
  .article-body{font-size:16.5px;line-height:1.85}
  .article-body h2{font-size:21px;margin:32px 0 14px}
  .article-body h3{font-size:18px}
  .article-body table{font-size:14px}
  .article-body th,.article-body td{padding:10px 12px}
  .grid-3{grid-template-columns:minmax(0,1fr)}
  .dual-grid{grid-template-columns:minmax(0,1fr)}
  .section{padding-top:56px}
  .sec-head{margin-bottom:24px}
  .cta-band{margin-top:64px;padding:28px 22px;border-radius:16px}
  .subscribe-form{flex-direction:column}
  .subscribe-form .btn{width:100%}
  .site-footer{margin-top:64px;padding:52px 0 24px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{margin-top:36px;flex-direction:column;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .card:hover,.dual-card:hover,.btn-primary:hover,.btn-ghost:hover,.nav-icon:hover{transform:none}
  .card:hover .card-media img{transform:none}
}

/* roulang page: category1 */
:root{
  --ink-900:#101B19;
  --ink-700:#2C3A38;
  --ink-500:#5B6663;
  --ink-300:#8A938F;
  --brand-700:#1D3B36;
  --brand-500:#2F5A52;
  --brand-100:#E7EFEC;
  --accent-600:#D2552A;
  --accent-100:#F7E8E0;
  --bg-paper:#F6F4F0;
  --bg-card:#FFFFFF;
  --bg-soft:#FAF8F5;
  --bg-dark:#0E1A17;
  --bd:#E5E1D9;
  --bd-soft:#EDE9E2;
  --radius-card:14px;
  --radius-lg:16px;
  --radius-btn:10px;
  --radius-pill:999px;
  --sh-1:0 1px 2px rgba(16,27,25,.05);
  --sh-2:0 10px 30px -12px rgba(16,27,25,.14);
  --sp-1:8px;
  --sp-2:16px;
  --sp-3:24px;
  --sp-4:32px;
  --sp-5:48px;
  --sp-6:64px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--ink-700);
  background:var(--bg-paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
ul{margin:0;padding:0;list-style:none;}
p{margin:0;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:600;line-height:1.25;letter-spacing:-.01em;}
svg{display:block;}
:focus-visible{outline:2px solid var(--accent-600);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(246,244,240,.88);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid transparent;
  transition:background .28s var(--ease),border-color .28s var(--ease);
}
.site-header.scrolled{
  background:rgba(250,248,245,.94);
  border-bottom-color:var(--bd);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:var(--sp-4);
  height:72px;
}
.site-header.scrolled .nav-inner{height:64px;}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-weight:700;
  font-size:17px;
  letter-spacing:-.01em;
  color:var(--ink-900);
  white-space:nowrap;
  transition:color .2s var(--ease);
}
.brand svg{width:20px;height:20px;color:var(--brand-500);}
.brand:hover{color:var(--brand-700);}

.nav-links{
  display:flex;
  align-items:center;
  gap:28px;
  margin-left:auto;
}
.nav-links a{
  position:relative;
  font-size:15px;
  color:var(--ink-700);
  padding:6px 0;
  transition:color .2s var(--ease);
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--accent-600);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-links a:hover{color:var(--ink-900);}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1);}
.nav-links a.active{color:var(--ink-900);font-weight:600;}

.nav-tools{
  display:flex;
  align-items:center;
  gap:var(--sp-2);
}
.nav-search{
  display:flex;
  align-items:center;
  gap:8px;
  width:264px;
  height:40px;
  padding:0 12px 0 14px;
  border-radius:var(--radius-pill);
  background:var(--bd-soft);
  border:1px solid transparent;
  transition:background .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search svg{width:16px;height:16px;color:var(--ink-300);flex:none;}
.nav-search input{
  flex:1;
  min-width:0;
  border:0;
  background:transparent;
  font-size:14px;
  outline:none;
}
.nav-search input::placeholder{color:var(--ink-300);}
.nav-search:focus-within{
  background:#fff;
  border-color:var(--brand-500);
  box-shadow:0 0 0 2px rgba(47,90,82,.14);
}
.kbd{
  font-size:12px;
  color:var(--ink-300);
  border:1px solid var(--bd);
  border-radius:6px;
  padding:1px 6px;
  background:#fff;
  flex:none;
}
.nav-icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;height:40px;
  border-radius:var(--radius-btn);
  color:var(--ink-700);
  border:1px solid var(--bd);
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.nav-icon svg{width:18px;height:18px;}
.nav-icon:hover{background:var(--brand-100);color:var(--brand-700);border-color:var(--brand-100);transform:translateY(-1px);}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  letter-spacing:0;
  transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
  white-space:nowrap;
}
.btn svg{width:16px;height:16px;transition:transform .24s var(--ease);}
.btn-primary{
  background:var(--accent-600);
  color:#fff;
  box-shadow:var(--sh-1);
}
.btn-primary:hover{background:#BC4822;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-ghost{
  background:transparent;
  color:var(--brand-700);
  border:1px solid var(--brand-500);
}
.btn-ghost:hover{background:var(--brand-100);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;}

.nav-toggle{
  display:none;
  width:40px;height:40px;
  align-items:center;
  justify-content:center;
  border-radius:var(--radius-btn);
  border:1px solid var(--bd);
  color:var(--ink-900);
}
.nav-toggle svg{width:20px;height:20px;}

.nav-scrim{
  position:fixed;
  inset:0;
  background:rgba(16,27,25,.4);
  opacity:0;
  visibility:hidden;
  transition:opacity .3s var(--ease),visibility .3s var(--ease);
  z-index:70;
}
.nav-scrim.open{opacity:1;visibility:visible;}
body.nav-open{overflow:hidden;}

/* ============ 首屏 ============ */
.page-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--bd);
}
.page-hero-bg{
  position:absolute;
  inset:0;
  background-size:cover;
  background-position:center right;
  opacity:.9;
}
.page-hero-bg::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,rgba(246,244,240,.96) 0%,rgba(246,244,240,.86) 42%,rgba(246,244,240,.32) 100%);
}
.page-hero-inner{
  position:relative;
  padding:56px 0 72px;
  max-width:760px;
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--ink-500);
  letter-spacing:.02em;
  margin-bottom:28px;
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--ink-500);transition:color .2s var(--ease);}
.breadcrumb a:hover{color:var(--accent-600);}
.breadcrumb .sep{color:var(--ink-300);}
.breadcrumb .current{color:var(--ink-300);}

.eyebrow{
  display:inline-block;
  font-size:12px;
  font-weight:500;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--brand-500);
  background:var(--brand-100);
  border-radius:var(--radius-pill);
  padding:5px 14px;
  margin-bottom:20px;
}
.page-hero h1{
  font-family:"Noto Serif SC","Songti SC",var(--font-sans);
  font-size:clamp(30px,4.4vw,54px);
  line-height:1.14;
  letter-spacing:-.02em;
  font-weight:700;
  margin-bottom:18px;
}
.lead{
  font-size:clamp(16px,1.4vw,18px);
  color:var(--ink-500);
  max-width:520px;
  line-height:1.75;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:32px;
}
.hero-points{
  display:flex;
  flex-wrap:wrap;
  gap:0;
  margin-top:36px;
  font-size:13px;
  color:var(--ink-500);
  letter-spacing:.02em;
}
.hero-points span{
  padding:0 16px;
  border-left:1px solid var(--bd);
}
.hero-points span:first-child{padding-left:0;border-left:0;}

/* ============ 通用板块 ============ */
.section{padding:112px 0;}
.section-soft{background:var(--bg-soft);border-top:1px solid var(--bd-soft);border-bottom:1px solid var(--bd-soft);}
.section-head{
  display:flex;
  align-items:flex-end;
  gap:var(--sp-4);
  padding-bottom:22px;
  margin-bottom:var(--sp-6);
  border-bottom:1px solid var(--bd);
}
.section-head .head-text{flex:none;max-width:640px;}
.section-title{
  font-size:clamp(24px,2.6vw,36px);
  line-height:1.2;
  letter-spacing:-.01em;
  margin-top:12px;
}
.section-note{
  margin-left:auto;
  font-size:14px;
  color:var(--ink-500);
  text-align:right;
  max-width:260px;
  line-height:1.6;
}
.section-head .eyebrow{margin-bottom:0;}

/* ============ 卡片栅格 ============ */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:var(--sp-3);
}
.cat-card{
  display:flex;
  flex-direction:column;
  background:var(--bg-card);
  border:1px solid var(--bd);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.cat-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--bd-soft);}
.cat-cover{
  display:block;
  overflow:hidden;
  background:linear-gradient(135deg,var(--brand-100),var(--bg-soft));
  aspect-ratio:16/9;
}
.cat-cover img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .6s var(--ease);
}
.cat-card:hover .cat-cover img{transform:scale(1.03);}
.cat-body{
  display:flex;
  flex-direction:column;
  gap:12px;
  padding:24px;
  flex:1;
}
.cat-body h3{
  font-size:19px;
  line-height:1.4;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.cat-body p{
  font-size:14.5px;
  color:var(--ink-500);
  line-height:1.75;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.badge{
  display:inline-flex;
  align-items:center;
  align-self:flex-start;
  height:24px;
  padding:0 10px;
  border-radius:var(--radius-pill);
  font-size:12px;
  font-weight:500;
  background:var(--accent-100);
  color:var(--accent-600);
}
.badge-brand{background:var(--brand-100);color:var(--brand-700);}
.card-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top:auto;
  padding-top:16px;
  border-top:1px solid var(--bd-soft);
  font-size:13px;
  color:var(--ink-300);
}
.text-cta{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--accent-600);
}
.text-cta svg{width:15px;height:15px;transition:transform .24s var(--ease);}
.text-cta:hover svg{transform:translateX(4px);}

/* ============ 深色数据条 ============ */
.dark-band{
  background:var(--bg-dark);
  color:rgba(255,255,255,.72);
  padding:72px 0;
}
.dark-band h2{
  color:#fff;
  font-size:clamp(22px,2.2vw,30px);
  margin-bottom:14px;
}
.dark-band .band-desc{
  font-size:15px;
  color:rgba(255,255,255,.62);
  max-width:560px;
}
.stat-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:1px;
  margin-top:var(--sp-6);
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--radius-card);
  overflow:hidden;
}
.stat{
  background:var(--bg-dark);
  padding:32px 28px;
}
.stat-num{
  font-size:clamp(34px,3.4vw,48px);
  font-weight:700;
  color:#fff;
  line-height:1.1;
  letter-spacing:-.02em;
}
.stat-num small{font-size:16px;font-weight:500;color:rgba(255,255,255,.6);margin-left:4px;}
.stat-label{
  margin-top:12px;
  font-size:14px;
  color:rgba(255,255,255,.62);
}
.band-foot{
  margin-top:var(--sp-4);
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;
  flex-wrap:wrap;
  gap:12px 32px;
  font-size:13px;
  color:rgba(255,255,255,.5);
  letter-spacing:.02em;
}

/* ============ 查看路径 ============ */
.path-layout{
  display:grid;
  grid-template-columns:minmax(0,380px) minmax(0,1fr);
  gap:var(--sp-6);
  align-items:start;
}
.path-intro{position:sticky;top:112px;}
.path-intro h2{
  font-size:clamp(24px,2.4vw,32px);
  margin:12px 0 18px;
}
.path-intro p{font-size:15px;color:var(--ink-500);max-width:340px;}
.path-list{
  display:grid;
  gap:var(--sp-3);
}
.path-item{
  display:grid;
  grid-template-columns:64px minmax(0,1fr);
  gap:var(--sp-3);
  padding:26px 28px;
  background:var(--bg-card);
  border:1px solid var(--bd);
  border-radius:var(--radius-card);
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.path-item:hover{border-color:var(--brand-100);box-shadow:var(--sh-1);}
.path-index{
  font-size:15px;
  font-weight:700;
  color:var(--brand-500);
  letter-spacing:.06em;
  padding-top:3px;
}
.path-item h3{font-size:18px;margin-bottom:8px;}
.path-item p{font-size:14.5px;color:var(--ink-500);line-height:1.75;}
.path-points{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:8px var(--sp-3);
  margin-top:16px;
}
.path-points li{
  position:relative;
  padding-left:16px;
  font-size:13.5px;
  color:var(--ink-700);
}
.path-points li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--brand-100);
  border:1.5px solid var(--brand-500);
}

/* ============ 速答 ============ */
.qa-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:var(--sp-3);
}
.qa-card{
  display:flex;
  flex-direction:column;
  gap:14px;
  padding:28px;
  background:var(--bg-card);
  border:1px solid var(--bd);
  border-left:3px solid var(--brand-500);
  border-radius:var(--radius-card);
  transition:transform .28s var(--ease),box-shadow .28s var(--ease);
}
.qa-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.qa-card h3{font-size:17px;line-height:1.5;}
.qa-card p{font-size:14.5px;color:var(--ink-500);line-height:1.8;}
.qa-card .qa-tag{
  font-size:12px;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--ink-300);
}

/* ============ CTA ============ */
.cta-panel{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,460px);
  gap:var(--sp-6);
  padding:56px;
  background:var(--bg-card);
  border:1px solid var(--bd);
  border-radius:var(--radius-lg);
  box-shadow:var(--sh-1);
}
.cta-panel h2{
  font-size:clamp(24px,2.4vw,32px);
  margin-bottom:16px;
}
.cta-panel p{font-size:15px;color:var(--ink-500);max-width:440px;}
.cta-form{
  display:grid;
  grid-template-columns:1fr 1fr auto;
  gap:12px;
  align-items:center;
  margin-top:var(--sp-4);
}
.field input{
  width:100%;
  height:48px;
  padding:0 16px;
  border-radius:var(--radius-btn);
  border:1px solid var(--bd);
  background:var(--bg-soft);
  font-size:15px;
  outline:none;
  transition:border-color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.field input::placeholder{color:var(--ink-300);}
.field input:hover{border-color:var(--ink-300);}
.field input:focus{
  background:#fff;
  border-color:var(--brand-500);
  box-shadow:0 0 0 1px var(--brand-500);
}
.alert{
  display:flex;
  align-items:center;
  gap:10px;
  margin-top:16px;
  padding:12px 16px;
  border-radius:var(--radius-btn);
  border-left:4px solid var(--brand-500);
  background:var(--brand-100);
  font-size:14px;
  color:var(--brand-700);
}
.alert svg{width:16px;height:16px;flex:none;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-dark);
  color:rgba(255,255,255,.68);
  padding:80px 0 32px;
  font-size:14px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:var(--sp-5);
}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-size:17px;
  font-weight:700;
  letter-spacing:-.01em;
}
.footer-brand svg{width:20px;height:20px;color:var(--brand-100);}
.footer-desc{
  margin-top:16px;
  font-size:14px;
  color:rgba(255,255,255,.58);
  max-width:240px;
}
.footer-icons{
  display:flex;
  gap:10px;
  margin-top:22px;
}
.footer-icons span{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:36px;height:36px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.14);
  color:rgba(255,255,255,.7);
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.footer-icons span:hover{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.28);}
.footer-icons svg{width:17px;height:17px;}
.footer-col h4{
  color:#fff;
  font-size:14px;
  font-weight:600;
  letter-spacing:.02em;
  margin-bottom:18px;
}
.footer-col a,.footer-col p{
  display:block;
  font-size:14px;
  color:rgba(255,255,255,.62);
  margin-bottom:12px;
  line-height:1.6;
  transition:color .2s var(--ease);
}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:12px 28px;
  margin-top:56px;
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;
  color:rgba(255,255,255,.45);
}

/* ============ 入场动效 ============ */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .42s var(--ease),transform .42s var(--ease);
}
.reveal.in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{max-width:1120px;}
  .nav-search{width:220px;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .section{padding:80px 0;}
  .nav-search{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-links{
    position:fixed;
    top:0;right:0;
    width:280px;
    height:100vh;
    margin-left:0;
    flex-direction:column;
    align-items:flex-start;
    gap:6px;
    padding:88px 24px 32px;
    background:#fff;
    border-top-left-radius:8px;
    border-bottom-left-radius:8px;
    box-shadow:-16px 0 40px -20px rgba(16,27,25,.4);
    transform:translateX(100%);
    transition:transform .3s var(--ease);
    z-index:75;
    overflow-y:auto;
  }
  .nav-links.open{transform:translateX(0);}
  .nav-links a{width:100%;padding:12px 0;font-size:16px;border-bottom:1px solid var(--bd-soft);}
  .nav-links a::after{display:none;}
  .nav-links a.active{color:var(--accent-600);}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .path-layout{grid-template-columns:1fr;gap:var(--sp-4);}
  .path-intro{position:static;}
  .path-intro p{max-width:none;}
  .qa-grid{grid-template-columns:1fr 1fr;}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-panel{grid-template-columns:1fr;padding:40px;gap:var(--sp-4);}
  .cta-form{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:var(--sp-4);}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;}
  .section-note{margin-left:0;text-align:left;max-width:none;}
}
@media (max-width:767px){
  .hero-points span{padding:0 12px;}
  .page-hero-inner{padding:40px 0 56px;}
  .qa-grid{grid-template-columns:1fr;}
  .path-points{grid-template-columns:1fr;}
}
@media (max-width:520px){
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .card-grid{grid-template-columns:1fr;}
  .stat-grid{grid-template-columns:1fr;}
  .stat{padding:24px 20px;}
  .cta-panel{padding:28px 22px;}
  .hero-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .brand span{font-size:15px;}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none;}
  .cat-card:hover,.qa-card:hover,.btn:hover{transform:none;}
  .cat-card:hover .cat-cover img{transform:none;}
}

/* roulang page: category2 */
/* ============ 设计令牌 ============ */
:root{
  --ink-900:#101B19;
  --ink-700:#2C3A38;
  --ink-500:#5B6663;
  --ink-300:#8A938F;
  --brand-700:#1D3B36;
  --brand-500:#2F5A52;
  --brand-100:#E7EFEC;
  --accent-600:#D2552A;
  --accent-100:#F7E8E0;
  --bg-paper:#F6F4F0;
  --bg-card:#FFFFFF;
  --bg-soft:#FAF8F5;
  --bg-dark:#0E1A17;
  --bd:#E5E1D9;
  --bd-soft:#EDE9E2;
  --success:#2F7D5E;
  --warn:#C08A2E;
  --error:#B23A2E;
  --radius-sm:10px;
  --radius:14px;
  --radius-lg:16px;
  --radius-pill:999px;
  --sh-1:0 1px 2px rgba(16,27,25,.05);
  --sh-2:0 10px 30px -12px rgba(16,27,25,.14);
  --sp-1:8px;
  --sp-2:16px;
  --sp-3:24px;
  --sp-4:32px;
  --sp-5:48px;
  --sp-6:64px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-en:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--ink-700);
  background:var(--bg-paper);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:600;line-height:1.25}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--accent-600)}
img{max-width:100%;display:block;border:0}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
:focus-visible{outline:2px solid var(--accent-600);outline-offset:2px;border-radius:4px}
::selection{background:var(--accent-100);color:var(--ink-900)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
@media (min-width:1440px){.container{max-width:1280px}}
@media (max-width:1023px){.container{padding:0 24px}}
@media (max-width:520px){.container{padding:0 20px}}

.section{padding:112px 0}
.section--soft{background:var(--bg-soft);border-top:1px solid var(--bd-soft);border-bottom:1px solid var(--bd-soft)}
@media (max-width:1023px){.section{padding:80px 0}}
@media (max-width:520px){.section{padding:56px 0}}

.eyebrow{
  display:inline-block;font-family:var(--font-en);font-size:12px;font-weight:500;
  letter-spacing:.08em;text-transform:uppercase;color:var(--brand-500);
  background:var(--brand-100);border-radius:var(--radius-pill);padding:6px 14px;
}
.section-head{display:flex;align-items:baseline;gap:24px;margin-bottom:40px}
.section-head h2{font-size:clamp(24px,2.6vw,36px);letter-spacing:-.01em;flex:0 0 auto}
.section-head .rule{flex:1 1 auto;height:1px;background:var(--bd);transform:translateY(-6px)}
.section-lead{max-width:640px;color:var(--ink-500);font-size:14px;margin:-24px 0 40px}
@media (max-width:520px){
  .section-head{flex-wrap:wrap;gap:12px;margin-bottom:28px}
  .section-head .rule{display:none}
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:500;letter-spacing:.01em;white-space:nowrap;
  border:1px solid transparent;cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--accent-600);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:#B9451F;color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0);background:#A83D1B}
.btn-ghost{background:transparent;color:var(--brand-700);border-color:var(--brand-500)}
.btn-ghost:hover{background:var(--brand-100);color:var(--brand-700);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;transform:none}

.link-cta{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--accent-600);font-size:15px;font-weight:500;position:relative;
}
.link-cta::after{
  content:"";position:absolute;left:0;bottom:-4px;height:1px;width:0;
  background:var(--accent-600);transition:width .28s var(--ease);
}
.link-cta:hover::after{width:100%}
.link-cta .arrow{transition:transform .28s var(--ease)}
.link-cta:hover .arrow{transform:translateX(4px)}

/* ============ 徽章与标签 ============ */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:500;letter-spacing:.02em;background:var(--accent-100);color:var(--accent-600);
}
.badge-brand{background:var(--brand-100);color:var(--brand-700)}
.badge-plain{background:var(--bg-soft);color:var(--ink-500);border:1px solid var(--bd)}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,240,.86);
  backdrop-filter:saturate(160%) blur(10px);
  transition:box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(250,248,245,.94);
  box-shadow:0 1px 0 var(--bd),0 8px 24px -20px rgba(16,27,25,.35);
}
.nav-inner{
  position:relative;display:flex;align-items:center;gap:24px;
  height:72px;transition:height .2s var(--ease);
}
.site-header.is-scrolled .nav-inner{height:64px}

.brand{
  display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;
  font-weight:700;font-size:18px;letter-spacing:-.01em;color:var(--ink-900);
}
.brand:hover{color:var(--ink-900)}
.brand svg{width:20px;height:20px;color:var(--brand-700);flex:0 0 auto}

.nav-links{display:flex;align-items:center;gap:28px;margin-left:8px}
.nav-links a{
  position:relative;font-size:15px;color:var(--ink-700);padding:6px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--accent-600);transition:width .2s var(--ease);
}
.nav-links a:hover{color:var(--ink-900)}
.nav-links a:hover::after{width:100%}
.nav-links a.active{color:var(--ink-900);font-weight:500}
.nav-links a.active::after{width:100%}

.nav-tools{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-search{
  display:flex;align-items:center;gap:8px;
  width:260px;height:40px;padding:0 12px;
  background:var(--bd-soft);border:1px solid transparent;border-radius:var(--radius-pill);
  transition:background-color .2s var(--ease),border-color .2s var(--ease);
}
.nav-search svg{width:16px;height:16px;color:var(--ink-300);flex:0 0 auto}
.nav-search input{
  flex:1;min-width:0;border:0;background:transparent;font-size:14px;color:var(--ink-900);
}
.nav-search input::placeholder{color:var(--ink-300)}
.nav-search input:focus{outline:none}
.nav-search:focus-within{
  background:var(--bg-card);border-color:var(--brand-500);
  box-shadow:0 0 0 2px rgba(47,90,82,.14);
}
.nav-search .kbd{
  flex:0 0 auto;font-family:var(--font-en);font-size:11px;color:var(--ink-500);
  border:1px solid var(--bd);background:var(--bg-card);border-radius:6px;padding:1px 6px;
}
.nav-icon{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:var(--radius-sm);color:var(--ink-700);
  border:1px solid transparent;transition:background-color .2s var(--ease),color .2s var(--ease);
}
.nav-icon svg{width:18px;height:18px}
.nav-icon:hover{background:var(--brand-100);color:var(--brand-700)}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:var(--radius-sm);color:var(--ink-900);
  border:1px solid var(--bd);background:var(--bg-card);
}
.nav-toggle svg{width:20px;height:20px}
.nav-toggle:hover{background:var(--brand-100)}

@media (max-width:1100px){
  .nav-search{width:200px}
  .nav-links{gap:20px}
}
@media (max-width:1023px){
  .nav-toggle{display:inline-flex}
  .nav-links{
    position:absolute;top:calc(100% + 10px);left:0;right:0;
    display:none;flex-direction:column;align-items:stretch;gap:2px;
    padding:12px;background:var(--bg-card);border:1px solid var(--bd);
    border-radius:var(--radius);box-shadow:var(--sh-2);
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 14px;border-radius:var(--radius-sm,10px);font-size:15px}
  .nav-links a::after{display:none}
  .nav-links a:hover{background:var(--bg-soft)}
  .nav-links a.active{background:var(--brand-100);color:var(--brand-700)}
}
@media (max-width:767px){
  .nav-search{width:40px;height:40px;justify-content:center;padding:0;border-radius:var(--radius-pill)}
  .nav-search input,.nav-search .kbd{display:none}
  .nav-icon{display:none}
  .brand{font-size:16px}
}
@media (max-width:520px){
  .nav-inner{gap:12px}
  .nav-tools{gap:8px}
  .btn-sm{padding:0 14px}
}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-500);margin-bottom:28px;
}
.breadcrumb a{color:var(--ink-500)}
.breadcrumb a:hover{color:var(--accent-600)}
.breadcrumb .sep{color:var(--ink-300)}
.breadcrumb .current{color:var(--ink-500)}

/* ============ Hero ============ */
.hero{padding:56px 0 88px;border-bottom:1px solid var(--bd-soft)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:64px;align-items:center}
.hero h1{
  font-family:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  font-size:clamp(30px,4vw,52px);line-height:1.14;letter-spacing:-.02em;
  margin:20px 0 20px;
}
.hero-sub{font-size:18px;color:var(--ink-700);font-weight:500}
.hero-desc{margin-top:16px;max-width:560px;color:var(--ink-500);font-size:16px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-points{
  display:flex;flex-wrap:wrap;gap:0 18px;margin-top:36px;
  font-size:13px;color:var(--ink-500);letter-spacing:.02em;
}
.hero-points li{display:flex;align-items:center;gap:18px}
.hero-points li+li::before{content:"";width:1px;height:12px;background:var(--bd);display:inline-block}
.hero-media{margin:0;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--sh-2);position:relative;aspect-ratio:16/10;background:linear-gradient(135deg,var(--brand-100),var(--bg-paper))}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media figcaption{
  position:absolute;left:16px;bottom:16px;right:16px;
  background:rgba(14,26,23,.72);color:#fff;border-radius:var(--radius-sm);
  padding:10px 14px;font-size:13px;line-height:1.6;
}
@media (max-width:1023px){
  .hero{padding:40px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-media{order:2;aspect-ratio:16/9}
}
@media (max-width:520px){
  .hero h1{font-size:28px}
  .hero-sub{font-size:16px}
  .hero-media figcaption{position:static;border-radius:0;background:var(--bg-soft);color:var(--ink-500)}
  .hero-media{border-radius:var(--radius);box-shadow:var(--sh-1)}
}

/* ============ 步骤时间线 ============ */
.steps-layout{display:grid;grid-template-columns:360px minmax(0,1fr);gap:72px;align-items:start}
.steps-aside{position:sticky;top:104px}
.steps-aside h2{font-size:clamp(24px,2.6vw,36px);letter-spacing:-.01em;margin:14px 0 16px}
.steps-aside p{color:var(--ink-500);font-size:15px;max-width:320px}
.steps-aside .link-cta{margin-top:24px}
.steps-aside .aside-note{
  margin-top:32px;padding-top:20px;border-top:1px solid var(--bd);
  font-size:13px;color:var(--ink-300);
}
.steps{display:flex;flex-direction:column}
.step{
  position:relative;display:grid;grid-template-columns:88px minmax(0,1fr);
  gap:0 24px;padding-bottom:56px;
}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";position:absolute;left:43px;top:70px;bottom:0;width:1px;background:var(--bd);
}
.step:last-child::before{display:none}
.step-index{
  font-family:var(--font-en);font-size:48px;font-weight:700;line-height:1;
  color:rgba(29,59,54,.16);letter-spacing:-.04em;
  transition:color .28s var(--ease);
}
.step:hover .step-index{color:rgba(210,85,42,.55)}
.step-body h3{font-size:20px;margin-bottom:10px}
.step-body p{color:var(--ink-500);font-size:15px;max-width:620px}
.step-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.step-meta li{
  font-size:13px;color:var(--brand-700);background:var(--brand-100);
  border-radius:var(--radius-pill);padding:5px 12px;
}
@media (max-width:1023px){
  .steps-layout{grid-template-columns:1fr;gap:44px}
  .steps-aside{position:static}
  .steps-aside p{max-width:none}
}
@media (max-width:767px){
  .step{grid-template-columns:1fr;gap:10px;padding-bottom:40px}
  .step::before{display:none}
  .step-index{
    font-size:13px;font-weight:500;color:var(--accent-600);background:var(--accent-100);
    border-radius:var(--radius-pill);padding:4px 12px;width:fit-content;letter-spacing:.04em;
  }
  .step:hover .step-index{color:var(--accent-600)}
}

/* ============ 卡片栅格 ============ */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;background:var(--bg-card);
  border:1px solid var(--bd);border-radius:var(--radius);overflow:hidden;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.card-cover{aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,var(--brand-100),var(--bg-paper))}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.card:hover .card-cover img{transform:scale(1.03)}
.card-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:19px;line-height:1.4}
.card-body p{font-size:14px;color:var(--ink-500);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{
  margin-top:auto;padding-top:16px;border-top:1px solid var(--bd-soft);
  display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-300);
}
.card-foot .link-cta{font-size:14px}
@media (max-width:1023px){.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){.grid-3{grid-template-columns:1fr}}

/* ============ 深色数据带 ============ */
.dark-band{
  background-color:var(--bg-dark);
  background-image:linear-gradient(rgba(14,26,23,.92),rgba(14,26,23,.96)),url("/assets/images/backpic/back-3.webp");
  background-size:cover;background-position:center;
  color:#fff;padding:72px 0;
}
.band-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:20px;margin-bottom:40px}
.band-head h2{color:#fff;font-size:clamp(22px,2.4vw,32px)}
.band-head .rule{flex:1;height:1px;background:rgba(255,255,255,.14)}
.band-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius);overflow:hidden}
.band-item{background:rgba(255,255,255,.02);padding:28px 24px}
.band-num{
  font-family:var(--font-en);font-size:clamp(34px,4vw,52px);font-weight:700;
  line-height:1;color:#fff;letter-spacing:-.03em;
}
.band-num small{font-size:16px;font-weight:500;margin-left:4px;color:rgba(255,255,255,.7)}
.band-label{display:block;margin-top:12px;font-size:14px;color:rgba(255,255,255,.72)}
@media (max-width:1023px){.band-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:520px){
  .dark-band{padding:56px 0}
  .band-grid{grid-template-columns:1fr}
  .band-item{padding:22px 20px}
}

/* ============ 横向列表行 ============ */
.rows{border-top:1px solid var(--bd-soft)}
.row{
  display:grid;grid-template-columns:132px minmax(0,1fr) auto 24px;
  align-items:center;gap:24px;padding:24px 12px;min-height:88px;
  border-bottom:1px solid var(--bd-soft);transition:background-color .2s var(--ease);
}
.row:hover{background:var(--bg-soft)}
.row:hover .row-arrow{transform:translateX(4px)}
.row-stage{display:flex;flex-direction:column;gap:2px;font-family:var(--font-en);font-size:20px;font-weight:700;color:var(--brand-700);line-height:1.2}
.row-stage span{font-family:var(--font-cn);font-size:12px;font-weight:400;color:var(--ink-300);letter-spacing:.04em}
.row-main h3{font-size:18px;margin-bottom:6px}
.row-main p{font-size:14px;color:var(--ink-500);overflow:hidden;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical}
.row-arrow{color:var(--ink-300);transition:transform .28s var(--ease);font-family:var(--font-en)}
@media (max-width:1023px){
  .row{grid-template-columns:100px minmax(0,1fr) 20px;gap:16px}
  .row .badge{display:none}
}
@media (max-width:640px){
  .row{grid-template-columns:1fr;gap:10px;padding:20px 4px;min-height:0}
  .row-stage{flex-direction:row;align-items:baseline;gap:8px;font-size:15px}
  .row-arrow{display:none}
  .row-main p{-webkit-line-clamp:2}
}

/* ============ FAQ ============ */
.faq{border-top:1px solid var(--bd)}
.faq-item{border-bottom:1px solid var(--bd)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
  min-height:64px;padding:18px 4px;text-align:left;
  font-size:17px;font-weight:500;color:var(--ink-900);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--accent-600)}
.faq-icon{
  position:relative;flex:0 0 auto;width:20px;height:20px;
  transition:transform .28s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand-700);border-radius:2px;
}
.faq-icon::before{left:0;top:9px;width:20px;height:2px}
.faq-icon::after{top:0;left:9px;width:2px;height:20px}
.faq-q[aria-expanded="true"] .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease)}
.faq-a-inner{padding:0 4px 22px;border-top:1px solid var(--bd-soft);padding-top:18px}
.faq-a p{font-size:15px;color:var(--ink-500);max-width:820px}

/* ============ CTA / 表单 ============ */
.cta-band{
  background:var(--bg-card);border:1px solid var(--bd);border-radius:var(--radius-lg);
  padding:56px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,420px);gap:56px;align-items:center;
  box-shadow:var(--sh-1);
}
.cta-band h2{font-size:clamp(24px,2.6vw,34px);letter-spacing:-.01em;margin-bottom:14px}
.cta-band p{color:var(--ink-500);font-size:15px;max-width:520px}
.subscribe-form{display:flex;gap:10px}
.subscribe-form input{
  flex:1;min-width:0;height:48px;padding:0 16px;border-radius:var(--radius-sm);
  border:1px solid var(--bd);background:var(--bg-soft);color:var(--ink-900);
  transition:border-color .2s var(--ease),background-color .2s var(--ease),box-shadow .2s var(--ease);
}
.subscribe-form input::placeholder{color:var(--ink-300)}
.subscribe-form input:focus{
  outline:none;background:var(--bg-card);border-color:var(--accent-600);
  box-shadow:0 0 0 3px rgba(210,85,42,.14);
}
.form-note{margin-top:12px;font-size:13px;color:var(--ink-300)}
.form-alert{
  display:none;align-items:center;gap:10px;margin-top:16px;padding:12px 16px;
  border-left:4px solid var(--success);background:var(--bg-soft);border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  font-size:14px;color:var(--ink-700);
}
.form-alert.is-error{border-left-color:var(--error)}
.form-alert.is-visible{display:flex}
@media (max-width:1023px){
  .cta-band{grid-template-columns:1fr;gap:32px;padding:40px 32px}
}
@media (max-width:520px){
  .cta-band{padding:32px 20px;border-radius:var(--radius)}
  .subscribe-form{flex-direction:column}
  .subscribe-form .btn{width:100%}
}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-dark);color:rgba(255,255,255,.72);padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:56px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;letter-spacing:-.01em}
.footer-brand svg{width:20px;height:20px}
.footer-desc{margin-top:14px;font-size:14px;max-width:240px}
.footer-icons{display:flex;gap:10px;margin-top:22px}
.footer-icons span{
  display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;
  border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-sm);
  color:rgba(255,255,255,.72);transition:border-color .2s var(--ease),color .2s var(--ease);
}
.footer-icons span:hover{border-color:rgba(255,255,255,.34);color:#fff}
.footer-icons svg{width:16px;height:16px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px}
.footer-col a{display:block;font-size:14px;color:rgba(255,255,255,.72);padding:6px 0;transition:color .2s var(--ease)}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-col p{font-size:14px;padding:6px 0}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px 32px;justify-content:space-between;
  padding:24px 0 32px;border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;color:rgba(255,255,255,.52);
}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding-bottom:40px}
}
@media (max-width:520px){
  .site-footer{padding-top:56px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
}

/* ============ 动效降级 ============ */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .card:hover{transform:none}
  .card:hover .card-cover img{transform:none}
  .row:hover .row-arrow{transform:none}
  .btn:hover{transform:none}
}

/* roulang page: category3 */
:root{
  --brand-700:#1D3B36;
  --brand-500:#2F5A52;
  --brand-100:#E7EFEC;
  --accent-600:#D2552A;
  --accent-100:#F7E8E0;
  --ink-900:#101B19;
  --ink-700:#2C3A38;
  --ink-500:#5B6663;
  --ink-300:#8A938F;
  --bg-paper:#F6F4F0;
  --bg-card:#FFFFFF;
  --bg-soft:#FAF8F5;
  --bg-dark:#0E1A17;
  --bd:#E5E1D9;
  --bd-soft:#EDE9E2;
  --ok:#2F7D5E;
  --warn:#C08A2E;
  --err:#B23A2E;
  --radius-sm:10px;
  --radius:14px;
  --radius-lg:16px;
  --radius-pill:999px;
  --sh-1:0 1px 2px rgba(16,27,25,.05);
  --sh-2:0 10px 30px -12px rgba(16,27,25,.14);
  --sp-1:8px;
  --sp-2:16px;
  --sp-3:24px;
  --sp-4:32px;
  --sp-5:48px;
  --sp-6:64px;
  --wrap:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --font-num:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--ink-700);
  background:var(--bg-paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand-700);text-decoration:none;transition:color 200ms var(--ease)}
a:hover{color:var(--accent-600)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:600;line-height:1.25}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0}
li{list-style:none}
:focus-visible{outline:2px solid var(--accent-600);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:var(--wrap);margin:0 auto;padding:0 32px}
@media (min-width:1440px){:root{--wrap:1280px}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:500;letter-spacing:.01em;line-height:1;
  transition:transform 200ms var(--ease),background-color 200ms var(--ease),color 200ms var(--ease),border-color 200ms var(--ease),box-shadow 200ms var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--accent-600);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:#BC4720;color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--brand-700);border:1px solid var(--brand-700)}
.btn-ghost:hover{background:var(--brand-100);color:var(--brand-700)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;transform:none}

.text-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--accent-600);font-size:15px;font-weight:500;
  position:relative;
}
.text-link::after{
  content:"";position:absolute;left:0;bottom:-3px;height:1px;width:0;
  background:var(--accent-600);transition:width 260ms var(--ease);
}
.text-link:hover::after{width:100%}
.text-link span{transition:transform 200ms var(--ease)}
.text-link:hover span{transform:translateX(4px)}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,240,.86);
  backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid transparent;
  transition:height 200ms var(--ease),background-color 200ms var(--ease),border-color 200ms var(--ease);
}
.site-header.is-scrolled{background:rgba(255,255,255,.92);border-bottom-color:var(--bd);box-shadow:var(--sh-1)}
.nav-inner{display:flex;align-items:center;gap:28px;height:72px;transition:height 200ms var(--ease)}
.site-header.is-scrolled .nav-inner{height:64px}

.brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--ink-900);flex:none}
.brand svg{width:20px;height:20px;color:var(--brand-700);flex:none}
.brand:hover{color:var(--brand-700)}

.nav-links{display:flex;align-items:center;gap:28px;margin-left:8px}
.nav-links a{
  position:relative;font-size:15px;color:var(--ink-700);padding:6px 0;font-weight:400;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--accent-600);
  transition:width 240ms var(--ease);
}
.nav-links a:hover{color:var(--ink-900)}
.nav-links a:hover::after{width:100%}
.nav-links a.active{color:var(--ink-900);font-weight:500}
.nav-links a.active::after{width:100%}

.nav-tools{display:flex;align-items:center;gap:12px;margin-left:auto;flex:none}
.nav-search{
  display:flex;align-items:center;gap:8px;
  width:264px;height:40px;padding:0 12px;
  background:var(--bd-soft);border:1px solid transparent;border-radius:var(--radius-pill);
  transition:background-color 200ms var(--ease),border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.nav-search:focus-within{background:#fff;border-color:var(--brand-700);box-shadow:0 0 0 1px var(--brand-700)}
.nav-search svg{width:16px;height:16px;color:var(--ink-300);flex:none}
.nav-search input{
  flex:1;min-width:0;border:0;background:transparent;font-size:14px;outline:none;
}
.nav-search input::placeholder{color:var(--ink-300)}
.kbd{
  font-family:var(--font-num);font-size:12px;color:var(--ink-500);
  border:1px solid var(--bd);background:#fff;border-radius:6px;padding:1px 5px;line-height:1.4;flex:none;
}
.nav-icon{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:var(--radius-sm);color:var(--ink-700);
  border:1px solid transparent;transition:background-color 200ms var(--ease),color 200ms var(--ease),border-color 200ms var(--ease);
}
.nav-icon svg{width:18px;height:18px}
.nav-icon:hover{background:var(--brand-100);color:var(--brand-700);border-color:var(--brand-100)}
.nav-toggle{
  display:none;align-items:center;justify-content:center;width:40px;height:40px;
  border-radius:var(--radius-sm);border:1px solid var(--bd);color:var(--ink-900);background:#fff;
}
.nav-toggle svg{width:20px;height:20px}

/* ---------- 移动抽屉 ---------- */
.drawer-overlay{
  position:fixed;inset:0;background:rgba(16,27,25,.4);z-index:80;
  opacity:0;pointer-events:none;transition:opacity 300ms var(--ease);
}
.drawer-overlay.is-open{opacity:1;pointer-events:auto}
.mobile-drawer{
  position:fixed;top:0;right:0;height:100%;width:280px;z-index:90;
  background:#fff;border-radius:8px 0 0 8px;
  transform:translateX(100%);transition:transform 300ms var(--ease);
  padding:24px 20px;overflow-y:auto;display:flex;flex-direction:column;gap:6px;
}
.mobile-drawer.is-open{transform:translateX(0)}
.mobile-drawer .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.mobile-drawer .drawer-head span{font-weight:700;color:var(--ink-900);font-size:16px}
.drawer-close{width:36px;height:36px;border-radius:8px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--bd);color:var(--ink-700)}
.mobile-drawer a.drawer-link{
  display:block;padding:14px 12px;border-radius:var(--radius-sm);font-size:15px;color:var(--ink-700);
}
.mobile-drawer a.drawer-link:hover{background:var(--bg-soft);color:var(--brand-700)}
.mobile-drawer a.drawer-link.active{background:var(--brand-100);color:var(--brand-700);font-weight:500}
.mobile-drawer .btn{margin-top:16px}

/* ---------- 页面头部 ---------- */
.page-hero{
  position:relative;padding:56px 0 72px;border-bottom:1px solid var(--bd);overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(246,244,240,.97) 0%,rgba(246,244,240,.92) 44%,rgba(246,244,240,.45) 100%);
}
.page-hero .container{position:relative;z-index:1;max-width:1200px}

.breadcrumb{font-size:13px;color:var(--ink-500);letter-spacing:.02em;margin-bottom:26px}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li::after{content:"›";color:var(--ink-300)}
.breadcrumb li:last-child::after{display:none}
.breadcrumb a{color:var(--ink-500)}
.breadcrumb a:hover{color:var(--brand-700)}
.breadcrumb .current{color:var(--ink-500)}

.page-hero h1{
  font-family:var(--font-serif);
  font-size:clamp(30px,4.2vw,54px);
  line-height:1.14;
  letter-spacing:-.02em;
  font-weight:700;
  max-width:16em;
}
.lede{
  margin-top:22px;max-width:640px;
  font-size:17px;line-height:1.8;color:var(--ink-500);
}
.hero-facts{
  display:flex;flex-wrap:wrap;margin-top:28px;
  font-size:13px;color:var(--ink-500);letter-spacing:.02em;
}
.hero-facts li{position:relative;padding:0 16px}
.hero-facts li:first-child{padding-left:0}
.hero-facts li+li::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:1px;height:14px;background:var(--bd);
}

/* ---------- 板块 ---------- */
.section{padding:112px 0}
.section-soft{background:var(--bg-soft);border-top:1px solid var(--bd-soft);border-bottom:1px solid var(--bd-soft)}

.section-head{display:flex;align-items:baseline;gap:20px;margin-bottom:44px}
.section-head::after{content:"";flex:1 1 auto;height:1px;background:var(--bd);transform:translateY(-6px)}
.section-head h2{font-size:clamp(24px,2.6vw,34px);letter-spacing:-.01em;white-space:nowrap}
.section-note{font-size:14px;color:var(--ink-500);white-space:nowrap;margin:0}

/* ---------- 规格矩阵 ---------- */
.table-scroll{
  overflow-x:auto;border:1px solid var(--bd);border-radius:var(--radius);
  background:var(--bg-card);box-shadow:var(--sh-1);
  -webkit-overflow-scrolling:touch;
}
.table-scroll:focus-visible{outline:2px solid var(--accent-600);outline-offset:2px}
.spec-table{width:100%;min-width:900px;border-collapse:collapse;font-size:14.5px}
.spec-table caption{text-align:left;padding:18px 22px 0;font-size:13px;color:var(--ink-300)}
.spec-table thead th{
  background:var(--brand-700);color:#fff;font-weight:500;font-size:14px;
  text-align:left;padding:18px 20px;letter-spacing:.01em;white-space:nowrap;
}
.spec-table thead th:first-child{border-top-left-radius:13px}
.spec-table thead th:last-child{border-top-right-radius:13px}
.spec-table thead th.col-hl{background:var(--accent-600)}
.spec-table th[scope="row"]{
  text-align:left;font-weight:500;color:var(--ink-900);
  background:var(--bg-soft);padding:16px 20px;border-bottom:1px solid var(--bd-soft);
  white-space:nowrap;
}
.spec-table td{
  padding:16px 20px;border-bottom:1px solid var(--bd-soft);
  color:var(--ink-700);vertical-align:top;
}
.spec-table tbody tr:nth-child(even) td{background:#FCFAF7}
.spec-table tbody tr:nth-child(even) th[scope="row"]{background:#F4F1EB}
.spec-table td.col-hl{background:rgba(210,85,42,.05);color:var(--ink-900)}
.spec-table tbody tr:nth-child(even) td.col-hl{background:rgba(210,85,42,.09)}
.spec-table tbody tr:hover td{background:rgba(47,90,82,.05)}
.spec-table tbody tr:hover td.col-hl{background:rgba(210,85,42,.11)}
.spec-table tbody tr:last-child td,
.spec-table tbody tr:last-child th[scope="row"]{border-bottom:0}
.table-hint{margin-top:14px;font-size:13px;color:var(--ink-300)}

/* ---------- 差异要点 ---------- */
.diff-grid{display:grid;grid-template-columns:340px 1fr;gap:64px;align-items:start}
.diff-aside{position:sticky;top:104px}
.diff-aside h2{font-size:clamp(24px,2.6vw,32px);letter-spacing:-.01em;margin-bottom:16px}
.diff-aside p{font-size:15px;color:var(--ink-500);margin-bottom:24px}
.diff-list{border-top:1px solid var(--bd)}
.diff-item{
  display:grid;grid-template-columns:76px 1fr;gap:24px;
  padding:28px 0;border-bottom:1px solid var(--bd);
  transition:background-color 200ms var(--ease),padding-left 240ms var(--ease);
}
.diff-item:hover{background:var(--bg-soft);padding-left:12px}
.diff-num{
  font-family:var(--font-num);font-size:26px;font-weight:600;color:var(--brand-500);
  letter-spacing:-.02em;line-height:1.2;
}
.diff-item h3{font-size:19px;margin-bottom:8px}
.diff-item p{font-size:15px;color:var(--ink-500);margin:0;max-width:62ch}

/* ---------- 判定建议卡 ---------- */
.pick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.pick-card{
  background:var(--bg-card);border:1px solid var(--bd);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform 200ms var(--ease),box-shadow 200ms var(--ease),border-color 200ms var(--ease);
}
.pick-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#DCD7CC}
.pick-media{position:relative;overflow:hidden;aspect-ratio:16/9;background:linear-gradient(135deg,var(--brand-100),#fff)}
.pick-media img{width:100%;height:100%;object-fit:cover;transition:transform 600ms var(--ease)}
.pick-card:hover .pick-media img{transform:scale(1.03)}
.pick-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.badge{
  display:inline-flex;align-items:center;align-self:flex-start;
  padding:4px 10px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:500;line-height:1.5;
  background:var(--brand-100);color:var(--brand-700);
}
.badge-accent{background:var(--accent-100);color:var(--accent-600)}
.pick-body h3{font-size:19px}
.pick-body p{font-size:14.5px;color:var(--ink-500);margin:0}
.pick-foot{margin-top:auto;padding-top:8px}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px}
.faq-list{border-top:1px solid var(--bd)}
.faq-item{border-bottom:1px solid var(--bd)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  min-height:64px;padding:18px 4px;cursor:pointer;list-style:none;
  font-size:17px;font-weight:500;color:var(--ink-900);
  transition:color 200ms var(--ease),padding-left 240ms var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand-700);padding-left:10px}
.faq-icon{position:relative;width:18px;height:18px;flex:none;transition:transform 280ms var(--ease)}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand-700);border-radius:2px;
}
.faq-icon::before{width:16px;height:1.6px;transform:translate(-50%,-50%)}
.faq-icon::after{width:1.6px;height:16px;transform:translate(-50%,-50%)}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-body{
  padding:0 4px 24px;border-top:1px solid var(--bd-soft);
  animation:faqIn 280ms var(--ease);
}
.faq-body p{margin-top:16px;font-size:15.5px;color:var(--ink-500);max-width:74ch}
@keyframes faqIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* ---------- CTA ---------- */
.cta-section{background:var(--bg-dark);color:rgba(255,255,255,.74);position:relative;overflow:hidden}
.cta-section::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:.16;
}
.cta-section .container{position:relative;z-index:1}
.cta-inner{display:grid;grid-template-columns:1.1fr 1fr;gap:64px;align-items:start}
.cta-copy h2{color:#fff;font-size:clamp(24px,2.6vw,34px);margin-bottom:18px;letter-spacing:-.01em}
.cta-copy p{font-size:15.5px;color:rgba(255,255,255,.72);max-width:52ch}
.cta-points{margin-top:28px;border-top:1px solid rgba(255,255,255,.08)}
.cta-points li{
  display:flex;gap:12px;padding:14px 0;font-size:14.5px;
  border-bottom:1px solid rgba(255,255,255,.08);color:rgba(255,255,255,.68);
}
.cta-points li strong{color:#fff;font-weight:500;flex:none}
.cta-form{
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius-lg);padding:28px;display:flex;flex-direction:column;gap:16px;
}
.field{display:flex;flex-direction:column;gap:8px}
.field-label{font-size:13px;color:rgba(255,255,255,.6);letter-spacing:.02em}
.field input{
  height:48px;padding:0 14px;border-radius:var(--radius-sm);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  color:#fff;font-size:15px;outline:none;
  transition:border-color 200ms var(--ease),background-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.field input::placeholder{color:rgba(255,255,255,.38)}
.field input:focus{border-color:var(--accent-600);background:rgba(255,255,255,.1);box-shadow:0 0 0 1px var(--accent-600)}
.form-note{font-size:13px;color:rgba(255,255,255,.5);margin:0}
.form-alert{
  display:flex;gap:10px;align-items:flex-start;
  border-left:4px solid var(--ok);background:rgba(47,125,94,.16);
  padding:12px 14px;border-radius:8px;font-size:14px;color:#fff;
}
.form-alert[hidden]{display:none}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-dark);color:rgba(255,255,255,.66);padding:72px 0 32px;font-size:14px}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;
  padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-size:16px;font-weight:700;letter-spacing:-.01em;margin-bottom:14px}
.footer-brand svg{width:20px;height:20px;flex:none}
.footer-desc{font-size:13.5px;color:rgba(255,255,255,.55);margin-bottom:18px}
.footer-icons{display:flex;gap:10px}
.footer-icons span{
  width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-sm);color:rgba(255,255,255,.6);
}
.footer-icons svg{width:17px;height:17px}
.footer-col h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:16px;letter-spacing:.02em}
.footer-col a{display:block;color:rgba(255,255,255,.66);font-size:14px;padding:6px 0}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-col p{font-size:13.5px;color:rgba(255,255,255,.55);margin:0 0 8px}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px 28px;justify-content:space-between;
  padding-top:26px;font-size:13px;color:rgba(255,255,255,.45);
}

/* ---------- 入场动效 ---------- */
.js .reveal{opacity:0;transform:translateY(12px);transition:opacity 420ms var(--ease),transform 420ms var(--ease)}
.js .reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .nav-search{width:220px}
}
@media (max-width:1024px){
  .container{padding:0 24px}
  .section{padding:80px 0}
  .nav-links{display:none}
  .nav-search{display:none}
  .nav-toggle{display:inline-flex}
  .diff-grid{grid-template-columns:1fr;gap:36px}
  .diff-aside{position:static}
  .pick-grid{grid-template-columns:1fr 1fr}
  .pick-grid .pick-card:last-child{grid-column:1 / -1}
  .cta-inner{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .page-hero{padding:44px 0 56px}
}
@media (max-width:768px){
  .page-hero::after{background:linear-gradient(180deg,rgba(246,244,240,.97) 0%,rgba(246,244,240,.88) 60%,rgba(246,244,240,.7) 100%)}
  .section-head{flex-wrap:wrap;gap:10px}
  .section-head::after{display:none}
  .section-head h2{white-space:normal}
  .section-note{white-space:normal}
  .spec-table{font-size:14px;min-width:820px}
  .diff-item{grid-template-columns:56px 1fr;gap:16px;padding:22px 0}
  .diff-num{font-size:22px}
  .pick-grid{grid-template-columns:1fr}
  .pick-grid .pick-card:last-child{grid-column:auto}
  .faq-item summary{font-size:16px}
}
@media (max-width:520px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section-head{margin-bottom:28px}
  body{font-size:15.5px}
  .lede{font-size:15.5px}
  .hero-facts{font-size:12.5px}
  .hero-facts li{padding:0 12px}
  .brand span{font-size:15px}
  .cta-form{padding:20px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
  .nav-icon{display:none}
  .btn-sm{padding:0 14px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .js .reveal{opacity:1;transform:none}
  .pick-card:hover{transform:none}
  .pick-card:hover .pick-media img{transform:none}
  .btn:hover{transform:none}
}

/* roulang page: category4 */
:root{
  --ink-900:#101B19;
  --ink-700:#2C3A38;
  --ink-500:#5B6663;
  --ink-300:#8A938F;
  --brand-700:#1D3B36;
  --brand-500:#2F5A52;
  --brand-100:#E7EFEC;
  --accent-600:#D2552A;
  --accent-100:#F7E8E0;
  --bg-paper:#F6F4F0;
  --bg-card:#FFFFFF;
  --bg-soft:#FAF8F5;
  --bg-dark:#0E1A17;
  --bd:#E5E1D9;
  --bd-soft:#EDE9E2;
  --ok:#2F7D5E;
  --warn:#C08A2E;
  --err:#B23A2E;
  --radius-sm:10px;
  --radius-md:14px;
  --radius-lg:16px;
  --radius-xl:20px;
  --radius-pill:999px;
  --sh-1:0 1px 2px rgba(16,27,25,.05);
  --sh-2:0 10px 30px -12px rgba(16,27,25,.14);
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-h:72px;
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-700);
  background:var(--bg-paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--accent-600);outline-offset:2px;border-radius:4px}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}
@media (min-width:1440px){ .container{max-width:1280px} }

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(246,244,240,.88);
  backdrop-filter:saturate(180%) blur(12px);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid transparent;
  transition:height .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.site-header.is-scrolled{
  border-bottom-color:var(--bd-soft);
  background:rgba(246,244,240,.94);
  --nav-h:64px;
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:var(--nav-h);
  transition:height .2s var(--ease);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-size:17px;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--ink-900);
  white-space:nowrap;
}
.brand svg{width:20px;height:20px;color:var(--brand-700);flex:0 0 20px}
.brand span{display:inline-block}

.nav-links{
  display:flex;
  align-items:center;
  gap:28px;
  margin:0 auto;
}
.nav-links a{
  position:relative;
  font-size:15px;
  color:var(--ink-700);
  padding:6px 0;
  transition:color .2s var(--ease);
  white-space:nowrap;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;
  bottom:-2px;
  width:0;
  height:2px;
  background:var(--accent-600);
  transition:width .22s var(--ease);
}
.nav-links a:hover{color:var(--ink-900)}
.nav-links a:hover::after{width:100%}
.nav-links a.active{color:var(--ink-900);font-weight:600}
.nav-links a.active::after{width:100%}

.nav-tools{display:flex;align-items:center;gap:12px}
.nav-search{
  position:relative;
  display:flex;
  align-items:center;
  gap:8px;
  width:262px;
  height:40px;
  padding:0 12px;
  border-radius:var(--radius-pill);
  background:var(--bd-soft);
  border:2px solid transparent;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.nav-search svg{width:16px;height:16px;color:var(--ink-300);flex:0 0 16px}
.nav-search input{
  flex:1;
  min-width:0;
  border:0;
  background:transparent;
  font-size:14px;
  outline:none;
}
.nav-search input::placeholder{color:var(--ink-300)}
.nav-search:focus-within{background:#fff;border-color:var(--brand-500)}
.kbd{
  font-size:12px;
  color:var(--ink-300);
  border:1px solid var(--bd);
  border-radius:6px;
  padding:1px 6px;
  background:#fff;
  line-height:1.5;
}
.nav-icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;
  height:40px;
  border-radius:var(--radius-sm);
  color:var(--ink-500);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.nav-icon svg{width:19px;height:19px}
.nav-icon:hover{background:var(--brand-100);color:var(--brand-700)}
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:40px;
  height:40px;
  border-radius:var(--radius-sm);
  color:var(--ink-700);
  transition:background .2s var(--ease);
}
.nav-toggle svg{width:22px;height:22px}
.nav-toggle:hover{background:var(--brand-100)}

/* 抽屉遮罩 */
.drawer-mask{
  position:fixed;
  inset:0;
  z-index:40;
  background:rgba(16,27,25,.4);
  opacity:0;
  pointer-events:none;
  transition:opacity .3s var(--ease);
}
.drawer-mask.show{opacity:1;pointer-events:auto}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--radius-sm);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  white-space:nowrap;
  transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--accent-600);color:#fff}
.btn-primary:hover{background:#BC4823;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-primary[disabled]{opacity:.45;transform:none;box-shadow:none;cursor:not-allowed}
.btn-outline{
  border:1px solid var(--brand-500);
  color:var(--brand-700);
  background:transparent;
}
.btn-outline:hover{background:var(--brand-100);transform:translateY(-1px)}
.btn-outline:active{transform:translateY(0)}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--accent-600);
  padding:6px 0;
}
.btn-text svg{width:16px;height:16px;transition:transform .2s var(--ease)}
.btn-text:hover svg{transform:translateX(4px)}

/* ============ 通用板块 ============ */
.section{padding:96px 0}
.section-soft{background:var(--bg-soft);border-top:1px solid var(--bd-soft);border-bottom:1px solid var(--bd-soft)}
.section-head{
  display:flex;
  align-items:center;
  gap:24px;
  margin-bottom:40px;
}
.section-head h2{
  flex:0 0 auto;
  font-size:clamp(24px,2.6vw,36px);
  line-height:1.2;
  font-weight:600;
  letter-spacing:-.01em;
  color:var(--ink-900);
}
.section-head .rule{flex:1 1 auto;height:1px;background:var(--bd);min-width:40px}
.section-kicker{
  font-size:14px;
  color:var(--ink-500);
  margin-bottom:10px;
}
.section-lead{
  max-width:680px;
  font-size:16px;
  color:var(--ink-500);
  margin-bottom:36px;
}

/* ============ 面包屑 & 分类头图 ============ */
.cat-hero{
  position:relative;
  overflow:hidden;
  padding:40px 0 64px;
  background:var(--bg-soft);
  border-bottom:1px solid var(--bd-soft);
}
.cat-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:url("/assets/images/backpic/back-2.png") center/cover no-repeat;
  opacity:.14;
}
.cat-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,var(--bg-paper) 0%,rgba(246,244,240,.82) 46%,rgba(246,244,240,.42) 100%);
}
.cat-hero .container{position:relative;z-index:2}

.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--ink-500);
  margin-bottom:28px;
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--ink-500);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--brand-700);text-decoration:underline}
.breadcrumb .sep{color:var(--ink-300)}
.breadcrumb .current{color:var(--ink-300)}

.hero-tag{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:var(--radius-pill);
  background:var(--brand-100);
  color:var(--brand-700);
  font-size:12px;
  font-weight:500;
  letter-spacing:.02em;
  margin-bottom:18px;
}
.cat-hero h1{
  font-size:clamp(32px,4.6vw,54px);
  line-height:1.12;
  font-weight:700;
  letter-spacing:-.02em;
  color:var(--ink-900);
  max-width:900px;
}
.hero-lead{
  margin-top:18px;
  max-width:640px;
  font-size:17px;
  color:var(--ink-500);
}

/* ============ 筛选标签 ============ */
.filter-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin-bottom:28px;
}
.filter-tabs{display:flex;flex-wrap:wrap;gap:10px}
.tab{
  height:38px;
  padding:0 18px;
  border-radius:var(--radius-pill);
  border:1px solid var(--bd);
  background:var(--bg-card);
  color:var(--ink-700);
  font-size:14px;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.tab:hover{border-color:var(--brand-500);color:var(--brand-700)}
.tab.active{background:var(--brand-700);border-color:var(--brand-700);color:#fff}
.tab:active{transform:translateY(1px)}
.filter-count{
  margin-left:auto;
  font-size:13px;
  color:var(--ink-300);
}

/* ============ 资源卡 ============ */
.res-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.res-card{
  display:flex;
  flex-direction:column;
  background:var(--bg-card);
  border:1px solid var(--bd);
  border-radius:var(--radius-md);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.res-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--bd-soft)}
.res-card.is-hidden{display:none}
.res-cover{aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,var(--brand-500),var(--bg-paper))}
.res-cover img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.res-card:hover .res-cover img{transform:scale(1.03)}
.res-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.res-head{display:flex;align-items:center;gap:10px}
.badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:var(--radius-pill);
  font-size:12px;
  font-weight:500;
  background:var(--accent-100);
  color:var(--accent-600);
}
.badge-brand{background:var(--brand-100);color:var(--brand-700)}
.res-body h3{
  font-size:19px;
  line-height:1.4;
  font-weight:600;
  color:var(--ink-900);
}
.res-body p{
  font-size:14.5px;
  line-height:1.75;
  color:var(--ink-500);
}
.res-points{display:flex;flex-direction:column;gap:8px;margin-top:2px}
.res-points li{
  position:relative;
  padding-left:16px;
  font-size:14px;
  color:var(--ink-700);
}
.res-points li::before{
  content:"";
  position:absolute;
  left:0;
  top:11px;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--brand-500);
}
.res-foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-top:16px;
  border-top:1px solid var(--bd-soft);
  font-size:13px;
  color:var(--ink-300);
}
.res-foot a{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--brand-700);
  font-weight:600;
}
.res-foot a svg{width:15px;height:15px;transition:transform .2s var(--ease)}
.res-foot a:hover svg{transform:translateX(4px)}

/* ============ 深色数据条 ============ */
.stat-band{
  background:var(--bg-dark);
  border-radius:var(--radius-xl);
  padding:48px;
  color:#fff;
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;
}
.stat-item{padding-right:16px;border-right:1px solid rgba(255,255,255,.08)}
.stat-item:last-child{border-right:0;padding-right:0}
.stat-num{
  font-size:clamp(34px,4vw,48px);
  line-height:1.05;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
}
.stat-num small{font-size:18px;font-weight:600;margin-left:4px}
.stat-label{margin-top:10px;font-size:14px;color:rgba(255,255,255,.62)}
.stat-note{margin-top:6px;font-size:12.5px;color:rgba(255,255,255,.42)}

/* ============ FAQ ============ */
.faq-list{
  max-width:920px;
  border-top:1px solid var(--bd-soft);
}
.faq-item{border-bottom:1px solid var(--bd-soft)}
.faq-q{
  width:100%;
  min-height:64px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:18px 0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--ink-900);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--brand-700)}
.faq-icon{
  flex:0 0 26px;
  width:26px;
  height:26px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border:1px solid var(--bd);
  border-radius:50%;
  color:var(--brand-700);
  transition:transform .28s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.faq-icon svg{width:14px;height:14px}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--brand-100);border-color:var(--brand-100)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .28s var(--ease);
}
.faq-item.open .faq-a{max-height:360px}
.faq-a p{
  padding:0 46px 24px 0;
  font-size:15.5px;
  line-height:1.85;
  color:var(--ink-500);
  max-width:780px;
}

/* ============ 相关分类 ============ */
.rel-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
}
.rel-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:24px;
  background:var(--bg-card);
  border:1px solid var(--bd);
  border-radius:var(--radius-md);
  box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.rel-link:hover{transform:translateY(-2px);border-color:var(--brand-500);box-shadow:var(--sh-2)}
.rel-link h3{font-size:17px;font-weight:600;color:var(--ink-900);margin-bottom:6px}
.rel-link p{font-size:13.5px;color:var(--ink-500);line-height:1.7}
.rel-link svg{width:18px;height:18px;color:var(--brand-700);flex:0 0 18px;transition:transform .2s var(--ease)}
.rel-link:hover svg{transform:translateX(4px)}

/* ============ CTA 表单 ============ */
.cta-block{
  background:var(--brand-700);
  border-radius:var(--radius-xl);
  padding:56px;
  color:#fff;
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:48px;
  align-items:center;
}
.cta-block h2{
  font-size:clamp(24px,2.6vw,34px);
  line-height:1.22;
  font-weight:600;
  letter-spacing:-.01em;
}
.cta-block .cta-desc{
  margin-top:14px;
  font-size:15.5px;
  color:rgba(255,255,255,.72);
  max-width:420px;
}
.cta-points{display:flex;flex-wrap:wrap;gap:18px;margin-top:24px}
.cta-points span{
  display:inline-flex;
  align-items:center;
  gap:7px;
  font-size:13px;
  color:rgba(255,255,255,.72);
}
.cta-points svg{width:15px;height:15px;color:#8FBFB0}
.cta-form .form-row{display:flex;gap:12px}
.cta-form input{
  flex:1;
  min-width:0;
  height:48px;
  padding:0 16px;
  border-radius:var(--radius-sm);
  border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.08);
  color:#fff;
  font-size:15px;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.cta-form input::placeholder{color:rgba(255,255,255,.5)}
.cta-form input:focus{outline:none;background:rgba(255,255,255,.14);border-color:#8FBFB0}
.cta-form .btn-primary:disabled{opacity:.45}
.form-hint{margin-top:12px;font-size:12.5px;color:rgba(255,255,255,.5)}
.form-note{
  display:none;
  align-items:flex-start;
  gap:10px;
  margin-top:16px;
  padding:14px 16px;
  border-left:4px solid var(--ok);
  border-radius:var(--radius-sm);
  background:rgba(255,255,255,.1);
  font-size:14px;
  color:#fff;
}
.form-note.show{display:flex}
.form-note svg{width:18px;height:18px;flex:0 0 18px;margin-top:2px;color:#8FBFB0}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-dark);
  color:rgba(255,255,255,.62);
  padding:72px 0 32px;
  margin-top:96px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-size:17px;
  font-weight:700;
  color:#fff;
  letter-spacing:-.01em;
}
.footer-brand svg{width:20px;height:20px;color:#8FBFB0}
.footer-desc{margin-top:14px;font-size:14px;max-width:240px}
.footer-icons{display:flex;gap:10px;margin-top:20px}
.footer-icons span{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:36px;
  height:36px;
  border-radius:var(--radius-sm);
  border:1px solid rgba(255,255,255,.08);
  color:rgba(255,255,255,.7);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.footer-icons span:hover{background:rgba(255,255,255,.08);color:#fff}
.footer-icons svg{width:17px;height:17px}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:#fff;
  margin-bottom:16px;
  letter-spacing:.02em;
}
.footer-col a{
  display:block;
  font-size:14px;
  padding:6px 0;
  transition:color .2s var(--ease);
}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-col p{font-size:14px;padding:4px 0}
.footer-bottom{
  margin-top:56px;
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;
  flex-wrap:wrap;
  gap:12px 32px;
  font-size:12.5px;
  color:rgba(255,255,255,.42);
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .nav-search{width:220px}
  .nav-links{gap:22px}
}
@media (max-width:1023px){
  :root{--container:100%}
  .container{padding:0 24px}
  .section{padding:72px 0}
  .nav-links{
    position:fixed;
    top:var(--nav-h);
    right:0;
    width:280px;
    height:calc(100vh - var(--nav-h));
    margin:0;
    flex-direction:column;
    align-items:flex-start;
    gap:0;
    padding:16px 24px 32px;
    background:#fff;
    border-left:1px solid var(--bd-soft);
    box-shadow:-10px 0 30px -12px rgba(16,27,25,.14);
    transform:translateX(100%);
    transition:transform .3s var(--ease);
    overflow-y:auto;
    z-index:70;
  }
  .nav-links.open{transform:translateX(0)}
  .nav-links a{width:100%;padding:14px 0;font-size:16px;border-bottom:1px solid var(--bd-soft)}
  .nav-links a::after{display:none}
  .nav-links a.active{color:var(--brand-700)}
  .nav-search{display:none}
  .nav-toggle{display:inline-flex}
  .nav-tools{margin-left:auto}
  .res-grid{grid-template-columns:1fr}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-block{grid-template-columns:1fr;gap:32px;padding:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .stat-band{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 24px;padding:36px}
  .stat-item:nth-child(2n){border-right:0;padding-right:0}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .cat-hero{padding:28px 0 48px}
  .hero-lead{font-size:16px}
  .section-head{gap:16px;margin-bottom:28px}
  .res-body{padding:20px}
  .rel-grid{grid-template-columns:1fr}
  .faq-a p{padding-right:0}
  .cta-block{padding:32px 24px}
  .cta-form .form-row{flex-direction:column}
  .cta-form .btn{width:100%}
  .filter-count{margin-left:0;width:100%}
  .site-footer{padding:56px 0 28px;margin-top:64px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:519px){
  .stat-band{grid-template-columns:1fr;padding:28px}
  .stat-item{border-right:0;padding-right:0}
  .footer-grid{grid-template-columns:1fr}
  .nav-tools .btn-sm{display:none}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
  }
  .res-card:hover,.rel-link:hover,.btn:hover{transform:none}
  .res-card:hover .res-cover img{transform:none}
}