/* roulang page: index */
:root{
  --ink:#101A16;
  --brand:#0E3B2E;
  --brand-dark:#0A2A21;
  --brand-light:#16513F;
  --accent:#FF5A1F;
  --accent-hover:#E24A12;
  --mint:#5FD3A8;
  --paper:#F6F4EE;
  --card:#FFFFFF;
  --muted:#EDE9E0;
  --border:#DDD6C7;
  --text2:#6B6A61;
  --radius-card:14px;
  --radius-btn:12px;
  --shadow-soft:0 1px 2px rgba(16,26,22,.06);
  --shadow-lift:0 12px 30px -14px rgba(16,26,22,.30);
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  font-feature-settings:"tnum" 1;
  text-wrap:pretty;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{background:none;border:none;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
::selection{background:rgba(255,90,31,.22)}

.container-x{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container-x{padding:0 32px}}

.section{padding:64px 0}
@media (min-width:768px){.section{padding:80px 0}}
@media (min-width:1024px){.section{padding:104px 0}}
.section-alt{background:var(--muted)}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;font-weight:700;letter-spacing:.16em;
  color:var(--text2);
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--accent);border-radius:2px}
.section-title{
  font-size:clamp(24px,3vw,36px);font-weight:700;line-height:1.28;
  letter-spacing:-.01em;margin-top:16px;
}
.section-desc{
  margin-top:14px;max-width:720px;font-size:16px;line-height:1.9;color:var(--text2);
}
.section-head{margin-bottom:40px}
@media (min-width:1024px){.section-head{margin-bottom:56px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(246,244,238,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.scrolled{border-bottom-color:var(--border);box-shadow:0 8px 26px -22px rgba(16,26,22,.75)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;height:70px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;letter-spacing:-.01em}
.logo-mark{
  width:38px;height:38px;border-radius:10px;background:var(--brand);color:var(--paper);
  display:grid;place-items:center;font-size:13px;font-weight:800;letter-spacing:.04em;
  font-family:"Inter",system-ui,sans-serif;
}
.logo:hover .logo-mark{background:var(--brand-light)}
.nav-links{display:none;align-items:center;gap:2px}
@media (min-width:1024px){.nav-links{display:flex}}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:44px;
  padding:0 14px;border-radius:10px;font-size:15px;color:var(--ink);
  opacity:.76;transition:opacity .25s var(--ease),background-color .25s var(--ease);
}
.nav-link:hover{opacity:1;background:var(--muted)}
.nav-link.active{opacity:1;font-weight:700}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;
  background:var(--accent);border-radius:2px;
}
.nav-cta{display:none}
@media (min-width:1024px){.nav-cta{display:inline-flex}}
.brand-note{display:none;font-size:12px;color:var(--text2);letter-spacing:.04em}
@media (min-width:1280px){.brand-note{display:block}}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:48px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background-color .28s var(--ease),color .28s var(--ease),
             border-color .28s var(--ease),transform .28s var(--ease),box-shadow .28s var(--ease);
}
.btn i{transition:transform .28s var(--ease)}
.btn:hover i{transform:translateX(3px)}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 24px -16px rgba(255,90,31,.95)}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{border-color:rgba(246,244,238,.34);color:var(--paper)}
.btn-ghost:hover{background:rgba(246,244,238,.10);border-color:rgba(246,244,238,.62)}
.btn-outline{border-color:var(--ink);color:var(--ink)}
.btn-outline:hover{background:var(--brand);border-color:var(--brand);color:var(--paper)}
.btn-sm{min-height:44px;padding:0 18px;font-size:14px}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(900px 460px at 88% 8%, rgba(95,211,168,.14), transparent 62%),
    linear-gradient(160deg,#0A2A21 0%,#0E3B2E 58%,#0B3226 100%);
  color:var(--paper);
  padding:56px 0 64px;
}
@media (min-width:1024px){.hero{padding:84px 0 96px}}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(246,244,238,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(246,244,238,.05) 1px,transparent 1px);
  background-size:80px 80px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);
}
.hero-grid{position:relative;z-index:1;display:grid;gap:44px;align-items:center}
@media (min-width:1024px){.hero-grid{grid-template-columns:1.08fr .92fr;gap:56px}}
.hero-tag{
  display:inline-flex;align-items:center;gap:10px;
  border:1px solid rgba(246,244,238,.24);border-radius:999px;
  padding:7px 16px;font-size:13px;letter-spacing:.05em;color:rgba(246,244,238,.86);
}
.hero-tag .dot{width:7px;height:7px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 4px rgba(95,211,168,.16)}
.hero h1{
  margin-top:22px;
  font-size:clamp(32px,5vw,58px);font-weight:800;line-height:1.14;letter-spacing:-.02em;
}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero-sub{
  margin-top:20px;max-width:620px;
  font-size:clamp(16px,1.5vw,18px);line-height:1.85;color:rgba(246,244,238,.80);
}
.hero-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px}
.hero-meta{
  margin-top:34px;display:grid;grid-template-columns:repeat(3,1fr);
  border:1px solid rgba(246,244,238,.20);border-radius:var(--radius-card);overflow:hidden;
}
.hero-meta div{padding:16px 14px;border-right:1px solid rgba(246,244,238,.16)}
.hero-meta div:last-child{border-right:none}
.hero-meta strong{display:block;font-size:clamp(18px,2.2vw,24px);font-weight:800;font-family:"Inter",system-ui,sans-serif}
.hero-meta span{display:block;margin-top:2px;font-size:12px;letter-spacing:.06em;color:rgba(246,244,238,.66)}
.hero-figure{position:relative}
.hero-figure img{
  width:100%;aspect-ratio:5/4;object-fit:cover;
  border-radius:var(--radius-card);border:1px solid rgba(246,244,238,.16);
}
.hero-figure figcaption{
  position:absolute;left:16px;bottom:16px;right:16px;
  background:rgba(10,42,33,.82);border:1px solid rgba(246,244,238,.18);
  border-radius:10px;padding:12px 14px;font-size:13px;line-height:1.7;color:rgba(246,244,238,.88);
  backdrop-filter:blur(6px);
}

/* ---------- cards ---------- */
.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow-soft);
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease),transform .3s var(--ease);
}
.card:hover{border-color:var(--accent);box-shadow:var(--shadow-lift);transform:translateY(-3px)}
.cover{overflow:hidden;border-radius:12px}
.cover img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.card:hover .cover img{transform:scale(1.03)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;border:1px solid var(--border);
  font-size:12px;font-weight:600;letter-spacing:.02em;color:var(--brand);
  background:var(--paper);
}
.badge-mint{border-color:rgba(95,211,168,.5);color:#1F7A5B;background:rgba(95,211,168,.14)}
.badge-accent{border-color:rgba(255,90,31,.34);color:var(--accent-hover);background:rgba(255,90,31,.08)}

/* ---------- entry rail ---------- */
.rail{display:flex;gap:18px;overflow-x:auto;padding:4px 4px 18px;scroll-snap-type:x mandatory}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-thumb{background:var(--border);border-radius:99px}
.rail::-webkit-scrollbar-track{background:transparent}
.rail>*{flex:0 0 76%;scroll-snap-align:start}
@media (min-width:640px){.rail>*{flex:0 0 44%}}
@media (min-width:1024px){
  .rail{display:grid;grid-template-columns:repeat(4,1fr);overflow:visible;padding:0}
  .rail>*{flex:auto}
}
.entry-card{display:block;padding:14px}
.entry-card .cover{aspect-ratio:3/4}
.entry-card h3{margin-top:16px;font-size:17px;font-weight:700;line-height:1.5}
.entry-card p{margin-top:8px;font-size:14px;line-height:1.8;color:var(--text2)}
.entry-foot{
  margin-top:14px;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text2);border-top:1px solid var(--border);padding-top:12px;
}
.entry-foot .arrow{color:var(--accent);transition:transform .3s var(--ease)}
.entry-card:hover .entry-foot .arrow{transform:translateX(4px)}

/* ---------- index list ---------- */
.index-list{border-top:1px solid var(--border)}
.index-row{
  display:grid;grid-template-columns:56px 1fr 28px;align-items:center;gap:16px;
  padding:22px 12px;border-bottom:1px solid var(--border);
  transition:background-color .28s var(--ease),padding-left .28s var(--ease);
}
@media (min-width:768px){.index-row{grid-template-columns:72px 1fr 120px 28px;gap:22px;padding:26px 16px}}
.index-row:hover{background:var(--card);padding-left:22px}
.index-num{
  font-family:"Inter",system-ui,sans-serif;font-weight:800;font-size:15px;
  color:var(--text2);letter-spacing:.04em;transition:color .28s var(--ease);
}
.index-row:hover .index-num{color:var(--accent)}
.index-main h3{font-size:17px;font-weight:700;line-height:1.5}
@media (min-width:768px){.index-main h3{font-size:19px}}
.index-main p{margin-top:6px;font-size:14px;line-height:1.8;color:var(--text2)}
.index-count{display:none;font-size:13px;color:var(--text2);text-align:right;font-family:"Inter",system-ui,sans-serif}
@media (min-width:768px){.index-count{display:block}}
.index-arrow{color:var(--text2);transition:transform .3s var(--ease),color .3s var(--ease);justify-self:end}
.index-row:hover .index-arrow{transform:translateX(4px);color:var(--accent)}

/* ---------- feature grid ---------- */
.feature-grid{display:grid;gap:22px}
@media (min-width:1024px){.feature-grid{grid-template-columns:7fr 5fr;gap:24px}}
.feature-lead{display:flex;flex-direction:column;overflow:hidden}
.feature-lead .cover{aspect-ratio:16/10;border-radius:var(--radius-card) var(--radius-card) 0 0}
.feature-lead .body{padding:24px}
.feature-lead h3{font-size:22px;font-weight:700;line-height:1.42}
.feature-lead p{margin-top:12px;font-size:15px;line-height:1.85;color:var(--text2)}
.feature-side{display:grid;gap:22px}
.feature-mini{display:flex;gap:16px;padding:16px;align-items:flex-start}
.feature-mini .cover{flex:0 0 108px;aspect-ratio:1/1}
.feature-mini h3{font-size:17px;font-weight:700;line-height:1.5}
.feature-mini p{margin-top:8px;font-size:14px;line-height:1.78;color:var(--text2)}
.meta-line{
  margin-top:16px;display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--text2);
}
.meta-line .sep{width:1px;height:12px;background:var(--border)}

/* ---------- news (CMS) ---------- */
.news-grid{display:grid;gap:20px}
@media (min-width:640px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr)}}
.news-card{display:flex;flex-direction:column;padding:22px;min-height:100%}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px}
.news-date{font-size:12px;color:var(--text2);font-family:"Inter",system-ui,sans-serif}
.news-title{margin-top:16px;font-size:18px;font-weight:700;line-height:1.52;transition:color .28s var(--ease)}
.news-card:hover .news-title{color:var(--accent)}
.news-sum{margin-top:10px;font-size:14px;line-height:1.82;color:var(--text2)}
.link-more{
  margin-top:18px;padding-top:14px;border-top:1px solid var(--border);
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand);
}
.news-card:hover .link-more{color:var(--accent)}
.empty-state{
  border:1px dashed var(--border);border-radius:var(--radius-card);
  padding:48px 24px;text-align:center;background:var(--card);
}
.empty-state i{font-size:26px;color:var(--text2);opacity:.7}
.empty-state strong{display:block;margin-top:16px;font-size:17px;font-weight:700}
.empty-state span{display:block;margin-top:8px;font-size:14px;color:var(--text2)}

/* ---------- recommend rail ---------- */
.track{display:grid;grid-auto-flow:column;grid-auto-columns:78%;gap:18px;overflow-x:auto;padding:4px 4px 18px;scroll-snap-type:x mandatory}
.track::-webkit-scrollbar{height:6px}
.track::-webkit-scrollbar-thumb{background:var(--border);border-radius:99px}
.track>*{scroll-snap-align:start}
@media (min-width:640px){.track{grid-auto-columns:46%}}
@media (min-width:1024px){
  .track{grid-auto-flow:row;grid-template-columns:repeat(4,1fr);overflow:visible;padding:0}
  .track>*{grid-column:auto}
}
.mini-card{display:block;padding:12px}
.mini-card .cover{aspect-ratio:4/3}
.mini-card h3{margin-top:14px;font-size:16px;font-weight:700;line-height:1.5}
.mini-card span{display:block;margin-top:10px;font-size:12.5px;color:var(--text2)}

/* ---------- faq ---------- */
.faq-wrap{max-width:880px}
.faq-item{border-bottom:1px solid var(--border)}
.faq-item:first-child{border-top:1px solid var(--border)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;text-align:left;font-size:17px;font-weight:600;line-height:1.6;
  transition:color .28s var(--ease);
}
.faq-q:hover{color:var(--accent)}
.faq-icon{
  flex:0 0 30px;width:30px;height:30px;border-radius:50%;
  border:1px solid var(--border);display:grid;place-items:center;
  font-size:13px;color:var(--text2);
  transition:transform .32s var(--ease),color .32s var(--ease),border-color .32s var(--ease);
}
.faq-item.open .faq-icon{transform:rotate(45deg);color:var(--accent);border-color:var(--accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .38s var(--ease)}
.faq-a-inner{padding:0 4px 24px;font-size:15.5px;line-height:1.9;color:var(--text2);max-width:760px}

/* ---------- cta band ---------- */
.cta-band{
  background:linear-gradient(140deg,#0A2A21,#0E3B2E 62%,#123F31);
  color:var(--paper);border-radius:0;
  padding:56px 0;
}
@media (min-width:1024px){.cta-band{padding:72px 0}}
.cta-inner{display:grid;gap:28px;align-items:center}
@media (min-width:1024px){.cta-inner{grid-template-columns:1fr auto;gap:48px}}
.cta-inner h2{font-size:clamp(24px,3vw,34px);font-weight:800;line-height:1.3;letter-spacing:-.01em}
.cta-inner p{margin-top:14px;font-size:15px;line-height:1.85;color:rgba(246,244,238,.76);max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-dark);color:rgba(246,244,238,.72);padding:64px 0 0}
.footer-grid{display:grid;gap:36px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px}}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;color:var(--paper)}
.footer-brand .logo-mark{background:rgba(246,244,238,.10);border:1px solid rgba(246,244,238,.24)}
.footer-about{margin-top:18px;font-size:14px;line-height:1.85;color:rgba(246,244,238,.66);max-width:360px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--paper);letter-spacing:.04em}
.footer-col ul{margin-top:16px;display:grid;gap:11px}
.footer-col a{font-size:14px;color:rgba(246,244,238,.68);transition:color .25s var(--ease),padding-left .25s var(--ease)}
.footer-col a:hover{color:var(--accent);padding-left:4px}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(246,244,238,.16);
  padding:22px 0 28px;display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(246,244,238,.56);
}
.footer-bottom a{color:rgba(246,244,238,.68)}
.footer-bottom a:hover{color:var(--accent)}

/* ---------- to top ---------- */
.to-top{
  position:fixed;right:18px;bottom:96px;z-index:80;
  width:46px;height:46px;border-radius:50%;
  background:var(--card);border:1px solid var(--border);color:var(--brand);
  display:grid;place-items:center;box-shadow:var(--shadow-soft);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s,border-color .3s;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{border-color:var(--accent);color:var(--accent)}

/* ---------- mobile tab ---------- */
.mobile-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  display:flex;background:rgba(255,255,255,.97);
  border-top:1px solid var(--border);
  padding-bottom:env(safe-area-inset-bottom);
  backdrop-filter:blur(10px);
}
.mobile-tab a{
  flex:1;min-height:56px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  font-size:11px;color:rgba(16,26,22,.55);position:relative;
  transition:color .25s var(--ease);
}
.mobile-tab a i{font-size:16px}
.mobile-tab a.active{color:var(--accent);font-weight:700}
.mobile-tab a.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:22px;height:2px;background:var(--accent);border-radius:2px;
}
@media (min-width:1024px){.mobile-tab{display:none}}
@media (max-width:1023px){
  body{padding-bottom:88px}
  .to-top{bottom:104px}
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .48s var(--ease),transform .48s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --ink:#101A16;
  --brand:#0E3B2E;
  --brand-dark:#0A2A21;
  --brand-light:#16513F;
  --accent:#FF5A1F;
  --accent-hover:#E24A12;
  --mint:#5FD3A8;
  --paper:#F6F4EE;
  --card:#FFFFFF;
  --muted:#EDE9E0;
  --border:#DDD6C7;
  --text-2:#6B6A61;
  --radius:14px;
  --radius-sm:10px;
  --radius-btn:12px;
  --shadow-xs:0 1px 2px rgba(16,26,22,.06);
  --shadow-hover:0 12px 30px -14px rgba(16,26,22,.30);
  --ease:cubic-bezier(.2,.7,.2,1);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  text-wrap:pretty;
  font-feature-settings:"tnum" 1;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;}
.container-x{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;}

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(246,244,238,.88);
  backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease),background .3s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--border);box-shadow:0 6px 20px -18px rgba(16,26,22,.5);background:rgba(246,244,238,.96);}
.nav-wrap{display:flex;align-items:center;gap:24px;height:72px;}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:17px;letter-spacing:-.01em;color:var(--ink);}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:11px;
  background:var(--brand);color:#fff;font-size:14px;font-weight:800;letter-spacing:.02em;
}
.footer-brand .logo-mark{background:var(--accent);}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:17px;color:#fff;}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:12px;}
.nav-link{
  position:relative;padding:9px 12px;border-radius:9px;font-size:15px;color:var(--text-2);
  transition:color .25s var(--ease),background .25s var(--ease);
}
.nav-link:hover{color:var(--ink);background:rgba(14,59,46,.06);}
.nav-link.active{color:var(--ink);font-weight:600;}
.nav-link.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--accent);
}
.brand-note{
  margin-left:auto;font-size:13px;color:var(--text-2);letter-spacing:.02em;
  padding-left:16px;border-left:1px solid var(--border);
}
.nav-cta{margin-left:8px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);font-weight:600;font-size:15px;
  padding:12px 22px;border:1px solid transparent;
  transition:background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease),box-shadow .25s var(--ease);
}
.btn i{transition:transform .25s var(--ease);}
.btn:hover i.fa-arrow-right{transform:translateX(4px);}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--shadow-xs);}
.btn-primary:hover{background:var(--accent-hover);box-shadow:var(--shadow-hover);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent;}
.btn-ghost:hover{background:var(--brand);border-color:var(--brand);color:#fff;}
.btn-light{background:#fff;color:var(--ink);border-color:var(--border);}
.btn-light:hover{border-color:var(--accent);color:var(--accent-hover);}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;border:1px solid var(--border);
  font-size:12px;letter-spacing:.03em;color:var(--text-2);background:#fff;
}
.badge-accent{border-color:rgba(255,90,31,.4);color:var(--accent-hover);background:rgba(255,90,31,.08);}
.badge-mint{border-color:rgba(95,211,168,.45);color:#1E7A57;background:rgba(95,211,168,.14);}
.badge-ink{border-color:var(--ink);color:var(--ink);}

/* ============ 面包屑 ============ */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-2);}
.crumb a{transition:color .25s var(--ease);}
.crumb a:hover{color:var(--accent-hover);}
.crumb span.sep{color:var(--border);}
.crumb .current{color:var(--ink);}

/* ============ 文章页头 ============ */
.article-hero{
  position:relative;
  padding:36px 0 44px;
  background:linear-gradient(180deg,#FFFFFF 0%,var(--paper) 100%);
  border-bottom:1px solid var(--border);
}
.article-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
}
.article-hero .container-x{position:relative;z-index:1;}
.article-head{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;align-items:end;margin-top:26px;}
.article-head h1{
  font-size:clamp(30px,4.4vw,50px);
  font-weight:800;line-height:1.16;letter-spacing:-.02em;
  margin:16px 0 18px;max-width:22em;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;font-size:13.5px;color:var(--text-2);letter-spacing:.02em;}
.meta-row .dot{width:5px;height:5px;border-radius:50%;background:var(--mint);display:inline-block;margin-right:7px;vertical-align:middle;}
.share-group{display:flex;align-items:center;gap:8px;}
.share-btn{
  display:inline-flex;align-items:center;gap:8px;
  height:44px;padding:0 16px;border-radius:var(--radius-btn);
  border:1px solid var(--border);background:#fff;font-size:14px;color:var(--ink);
  transition:border-color .25s var(--ease),color .25s var(--ease),box-shadow .25s var(--ease),transform .25s var(--ease);
}
.share-btn:hover{border-color:var(--accent);color:var(--accent-hover);box-shadow:var(--shadow-hover);}
.share-btn:active{transform:translateY(1px);}
.share-btn.is-done{border-color:var(--mint);color:#1E7A57;}

/* ============ 正文布局 ============ */
.article-main{padding:56px 0 72px;}
.article-grid{display:grid;grid-template-columns:minmax(0,760px) 300px;gap:56px;justify-content:center;}
.article-col{min-width:0;}
.article-panel{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:clamp(24px,3vw,44px);box-shadow:var(--shadow-xs);
}
.article-body{font-size:17px;line-height:1.9;color:var(--ink);}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  position:relative;font-size:clamp(22px,2.6vw,28px);font-weight:700;
  margin:2em 0 .8em;padding-left:16px;scroll-margin-top:96px;
}
.article-body h2::before{content:"";position:absolute;left:0;top:.36em;width:4px;height:1em;border-radius:2px;background:var(--accent);}
.article-body h3{font-size:19px;font-weight:600;margin:1.7em 0 .6em;scroll-margin-top:96px;}
.article-body ul,.article-body ol{margin:0 0 1.2em;}
.article-body li{position:relative;padding-left:22px;margin-bottom:.55em;}
.article-body li::before{content:"";position:absolute;left:0;top:.75em;width:7px;height:7px;border-radius:2px;background:var(--accent);}
.article-body ol{counter-reset:olnum;}
.article-body ol li{counter-increment:olnum;}
.article-body ol li::before{content:counter(olnum);background:none;color:var(--accent);font-weight:700;font-size:14px;width:auto;height:auto;top:0;}
.article-body blockquote{
  margin:1.6em 0;padding:16px 22px;border-left:3px solid var(--accent);
  background:var(--muted);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--ink);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--radius);margin:1.6em 0;}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{text-align:center;font-size:13px;color:var(--text-2);margin-top:10px;}
.article-body a{color:var(--brand-light);text-decoration:underline;text-underline-offset:3px;transition:color .2s var(--ease);}
.article-body a:hover{color:var(--accent-hover);}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15.5px;}
.article-body th,.article-body td{border:1px solid var(--border);padding:10px 14px;text-align:left;}
.article-body th{background:var(--muted);font-weight:600;}
.article-body tbody tr:nth-child(even){background:#FAF9F5;}
.article-body hr{border:0;border-top:1px solid var(--border);margin:2.4em 0;}
.article-body code{background:var(--muted);padding:2px 6px;border-radius:6px;font-size:15px;}

/* 空态 */
.empty-state{text-align:center;padding:64px 20px;}
.empty-state i{font-size:34px;color:var(--border);}
.empty-state .empty-title{font-size:19px;font-weight:700;margin:18px 0 8px;}
.empty-state .empty-sub{font-size:14.5px;color:var(--text-2);margin-bottom:24px;}

/* 文末 */
.article-foot{margin-top:36px;padding-top:26px;border-top:1px solid var(--border);}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px;}
.tag-link{
  padding:6px 14px;border-radius:999px;border:1px solid var(--border);
  font-size:13px;color:var(--text-2);background:#fff;
  transition:border-color .25s var(--ease),color .25s var(--ease),transform .25s var(--ease);
}
.tag-link:hover{border-color:var(--accent);color:var(--accent-hover);transform:translateY(-1px);}
.foot-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ============ 侧栏 ============ */
.article-side{display:flex;flex-direction:column;gap:20px;}
.side-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-xs);}
.side-card.sticky{position:sticky;top:96px;}
.side-title{font-size:14px;font-weight:700;letter-spacing:.04em;color:var(--text-2);margin-bottom:14px;text-transform:none;}
.toc-list li{margin-bottom:2px;}
.toc-list a{
  display:block;padding:8px 12px;border-left:2px solid var(--border);font-size:14px;color:var(--text-2);
  transition:border-color .25s var(--ease),color .25s var(--ease),background .25s var(--ease);
}
.toc-list a:hover{border-left-color:var(--accent);color:var(--ink);background:rgba(255,90,31,.05);}
.toc-empty{font-size:13.5px;color:var(--text-2);}
.side-links li + li{border-top:1px solid var(--border);}
.side-links a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 0;font-size:14.5px;transition:color .25s var(--ease);}
.side-links a i{color:var(--border);transition:transform .25s var(--ease),color .25s var(--ease);}
.side-links a:hover{color:var(--accent-hover);}
.side-links a:hover i{color:var(--accent);transform:translateX(4px);}
.side-fav{background:var(--brand);color:#E7EFEA;border-color:var(--brand);}
.side-fav .side-title{color:rgba(255,255,255,.6);}
.side-fav p{font-size:14px;color:rgba(255,255,255,.82);margin-bottom:16px;}
.side-fav .btn{width:100%;}

/* ============ 相关内容 ============ */
.related{padding:8px 0 80px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:30px;}
.section-head h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;}
.section-head p{font-size:14.5px;color:var(--text-2);margin-top:8px;}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-xs);
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease),transform .3s var(--ease);
}
.card:hover{border-color:var(--accent);box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.card-cover{aspect-ratio:16/10;overflow:hidden;}
.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:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:18px;font-weight:600;transition:color .25s var(--ease);}
.card:hover .card-body h3{color:var(--accent-hover);}
.card-body p{font-size:14.5px;color:var(--text-2);line-height:1.8;}
.card-meta{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-2);margin-top:auto;padding-top:12px;border-top:1px solid var(--border);}

/* ============ FAQ ============ */
.faq{padding:0 0 80px;}
.faq-list{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;}
.faq-item + .faq-item{border-top:1px solid var(--border);}
.faq-item summary{
  list-style:none;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 24px;font-size:16.5px;font-weight:600;cursor:pointer;
  transition:background .25s var(--ease),color .25s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:#FBFAF6;color:var(--accent-hover);}
.faq-item summary .plus{
  flex:none;width:26px;height:26px;border-radius:50%;border:1px solid var(--border);
  display:inline-flex;align-items:center;justify-content:center;font-size:13px;color:var(--text-2);
  transition:transform .3s var(--ease),border-color .3s var(--ease),color .3s var(--ease);
}
.faq-item[open] summary .plus{transform:rotate(45deg);border-color:var(--accent);color:var(--accent);}
.faq-item .faq-answer{padding:0 24px 24px;font-size:15.5px;line-height:1.85;color:var(--text-2);}

/* ============ CTA 带 ============ */
.cta-band{background:var(--brand);color:#fff;border-radius:var(--radius);padding:clamp(28px,4vw,52px);}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;}
.cta-inner h2{font-size:clamp(22px,2.8vw,34px);font-weight:800;letter-spacing:-.02em;}
.cta-inner p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.75);max-width:46ch;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.cta-band .btn-light:hover{border-color:#fff;color:var(--ink);}
.cta-band .btn-ghost{border-color:rgba(255,255,255,.5);color:#fff;}
.cta-band .btn-ghost:hover{background:#fff;color:var(--brand);border-color:#fff;}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-dark);color:rgba(255,255,255,.72);margin-top:8px;padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.12);}
.footer-about{font-size:14.5px;line-height:1.85;margin-top:16px;color:rgba(255,255,255,.62);max-width:34ch;}
.footer-col h4{font-size:14px;font-weight:700;letter-spacing:.05em;color:#fff;margin-bottom:16px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14.5px;color:rgba(255,255,255,.68);transition:color .25s var(--ease);}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;padding-top:22px;font-size:13px;color:rgba(255,255,255,.5);}
.footer-bottom a{color:rgba(255,255,255,.7);text-decoration:underline;text-underline-offset:3px;}
.footer-bottom a:hover{color:var(--accent);}

/* ============ 回到顶部 ============ */
.to-top{
  position:fixed;right:22px;bottom:26px;z-index:80;
  width:44px;height:44px;border-radius:50%;border:1px solid var(--border);
  background:#fff;color:var(--ink);display:flex;align-items:center;justify-content:center;
  opacity:0;pointer-events:none;transform:translateY(8px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),border-color .25s var(--ease),color .25s var(--ease);
  box-shadow:var(--shadow-xs);
}
.to-top.show{opacity:1;pointer-events:auto;transform:none;}
.to-top:hover{border-color:var(--accent);color:var(--accent-hover);}

/* ============ 移动端底部 Tab ============ */
.mobile-tab{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:90;
  background:rgba(255,255,255,.97);backdrop-filter:blur(12px);
  border-top:1px solid var(--border);
  padding:8px 6px calc(8px + env(safe-area-inset-bottom));
}
.mobile-tab a{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  min-height:44px;font-size:11px;color:rgba(16,26,22,.5);
  transition:color .25s var(--ease);
}
.mobile-tab a i{font-size:17px;}
.mobile-tab a.active{color:var(--accent);}
.mobile-tab a.active::before{content:"";position:absolute;top:0;width:20px;height:2px;border-radius:2px;background:var(--accent);}
.mobile-tab a{position:relative;}

/* ============ 动画 ============ */
@keyframes fadeUp{from{opacity:0;transform:translateY(8px);}to{opacity:1;transform:none;}}
.reveal{animation:fadeUp .48s var(--ease) both;}
.reveal-2{animation-delay:.08s;}
.reveal-3{animation-delay:.16s;}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* ============ 响应式 ============ */
@media (max-width:1100px){
  .article-grid{grid-template-columns:minmax(0,1fr);gap:36px;}
  .side-card.sticky{position:static;}
  .article-side{flex-direction:row;flex-wrap:wrap;}
  .article-side > *{flex:1 1 280px;}
}
@media (max-width:1023px){
  .brand-note{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:767px){
  .container-x{padding:0 18px;}
  .nav-links{display:none;}
  .nav-cta{display:none;}
  .nav-wrap{height:62px;justify-content:space-between;}
  .mobile-tab{display:grid;grid-template-columns:repeat(5,1fr);}
  body{padding-bottom:88px;}
  .article-head{grid-template-columns:minmax(0,1fr);gap:20px;}
  .share-group{flex-wrap:wrap;}
  .article-main{padding:36px 0 56px;}
  .article-panel{padding:22px 18px;}
  .article-body{font-size:16.5px;}
  .grid-3{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .to-top{bottom:104px;right:16px;}
  .section-head{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category1 */
:root{
    --ink:#101A16;
    --brand:#0E3B2E;
    --brand-dark:#0A2A21;
    --brand-light:#16513F;
    --accent:#FF5A1F;
    --accent-hover:#E24A12;
    --mint:#5FD3A8;
    --paper:#F6F4EE;
    --card:#FFFFFF;
    --muted:#EDE9E0;
    --border:#DDD6C7;
    --text-2:#6B6A61;
    --radius-card:14px;
    --radius-btn:12px;
    --radius-input:10px;
    --shadow-1:0 1px 2px rgba(16,26,22,.06);
    --shadow-2:0 12px 30px -14px rgba(16,26,22,.30);
    --ease:cubic-bezier(.2,.7,.2,1);
    --container:1200px;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
    font-size:17px;
    line-height:1.85;
    font-feature-settings:"tnum" 1;
    -webkit-font-smoothing:antialiased;
    text-wrap:pretty;
  }
  h1,h2,h3,h4{margin:0;letter-spacing:-0.01em;text-wrap:balance;}
  h1{font-size:clamp(34px,5vw,56px);font-weight:800;line-height:1.12;letter-spacing:-0.02em;}
  h2{font-size:clamp(24px,3vw,36px);font-weight:700;line-height:1.25;}
  h3{font-size:19px;font-weight:600;line-height:1.5;}
  p{margin:0 0 1em;}
  p:last-child{margin-bottom:0;}
  a{color:inherit;text-decoration:none;transition:color .25s var(--ease);}
  img{max-width:100%;display:block;}
  button{font-family:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  :focus-visible{
    outline:2px solid var(--accent);
    outline-offset:2px;
    border-radius:4px;
  }

  .container-x{
    width:100%;
    max-width:var(--container);
    margin:0 auto;
    padding:0 24px;
  }
  .narrow{max-width:880px;margin:0 auto;}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(246,244,238,.92);
    backdrop-filter:saturate(140%) blur(10px);
    border-bottom:1px solid transparent;
    transition:border-color .3s var(--ease),box-shadow .3s var(--ease),background .3s var(--ease);
  }
  .site-header.is-scrolled{
    border-bottom-color:var(--border);
    box-shadow:0 6px 22px -18px rgba(16,26,22,.55);
  }
  .nav-wrap{
    display:flex;
    align-items:center;
    gap:28px;
    height:76px;
  }
  .logo{
    display:inline-flex;
    align-items:center;
    gap:10px;
    font-size:18px;
    font-weight:800;
    letter-spacing:-0.01em;
    color:var(--ink);
    white-space:nowrap;
  }
  .logo-mark{
    display:grid;
    place-items:center;
    width:38px;height:38px;
    border-radius:10px;
    background:var(--brand);
    color:#fff;
    font-size:13px;
    font-weight:800;
    letter-spacing:.04em;
  }
  .nav-links{
    display:flex;
    align-items:center;
    gap:26px;
    margin-left:auto;
  }
  .nav-link{
    position:relative;
    padding:6px 0;
    font-size:15px;
    font-weight:500;
    color:var(--text-2);
  }
  .nav-link:hover{color:var(--brand);}
  .nav-link.active{color:var(--ink);font-weight:700;}
  .nav-link.active::after{
    content:"";
    position:absolute;
    left:0;right:0;bottom:-2px;
    height:2px;
    border-radius:2px;
    background:var(--accent);
  }
  .brand-note{
    font-size:13px;
    color:var(--text-2);
    padding-left:22px;
    border-left:1px solid var(--border);
    white-space:nowrap;
  }
  .nav-cta{flex-shrink:0;}

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    min-height:46px;
    padding:0 22px;
    border-radius:var(--radius-btn);
    border:1px solid transparent;
    font-size:15px;
    font-weight:600;
    cursor:pointer;
    transition:background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease),box-shadow .25s var(--ease);
  }
  .btn i{transition:transform .3s var(--ease);}
  .btn:hover i{transform:translateX(4px);}
  .btn-primary{
    background:var(--accent);
    color:#fff;
    box-shadow:var(--shadow-1);
  }
  .btn-primary:hover{background:var(--accent-hover);box-shadow:var(--shadow-2);}
  .btn-primary:active{transform:translateY(1px);}
  .btn-ghost{
    background:transparent;
    color:var(--ink);
    border-color:var(--ink);
  }
  .btn-ghost:hover{background:var(--brand);color:#fff;border-color:var(--brand);}
  .btn-light{
    background:rgba(255,255,255,.10);
    color:#fff;
    border-color:rgba(255,255,255,.34);
  }
  .btn-light:hover{background:rgba(255,255,255,.20);border-color:#fff;}
  .btn-sm{min-height:40px;padding:0 16px;font-size:14px;}

  /* ---------- page head ---------- */
  .page-main{padding-bottom:0;}
  .page-head{padding:36px 0 0;}
  .breadcrumb{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:10px;
    font-size:13px;
    color:var(--text-2);
    margin-bottom:28px;
  }
  .breadcrumb a:hover{color:var(--accent);}
  .breadcrumb span.sep{color:var(--border);}
  .page-head-inner{max-width:880px;}
  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    padding:6px 14px;
    border:1px solid var(--border);
    border-radius:999px;
    background:var(--card);
    font-size:12px;
    font-weight:600;
    letter-spacing:.04em;
    color:var(--brand);
    margin-bottom:20px;
  }
  .eyebrow .dot{
    width:6px;height:6px;border-radius:50%;
    background:var(--mint);
  }
  .page-lead{
    margin-top:20px;
    max-width:62ch;
    font-size:17px;
    color:var(--text-2);
  }
  .page-banner{
    position:relative;
    margin:44px 0 0;
    border-radius:var(--radius-card);
    overflow:hidden;
    border:1px solid var(--border);
    box-shadow:var(--shadow-1);
  }
  .page-banner img{
    width:100%;
    height:clamp(200px,26vw,300px);
    object-fit:cover;
  }
  .page-banner figcaption{
    position:absolute;
    left:0;right:0;bottom:0;
    padding:16px 20px;
    font-size:13px;
    color:rgba(255,255,255,.88);
    background:linear-gradient(to top,rgba(10,42,33,.86),rgba(10,42,33,0));
  }

  .filter-bar{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:12px;
    margin-top:26px;
    padding:14px 18px;
    background:var(--muted);
    border:1px dashed var(--border);
    border-radius:12px;
  }
  .filter-bar .fb-label{
    font-size:13px;
    color:var(--text-2);
    margin-right:4px;
  }
  .chip{
    display:inline-flex;
    align-items:center;
    padding:5px 13px;
    border-radius:999px;
    border:1px solid var(--border);
    background:var(--card);
    font-size:13px;
    color:var(--text-2);
  }
  .chip.is-on{
    background:var(--brand);
    border-color:var(--brand);
    color:#fff;
    font-weight:600;
  }
  .filter-bar .fb-right{
    margin-left:auto;
    font-size:13px;
    color:var(--text-2);
  }

  /* ---------- sections ---------- */
  .section{padding:88px 0;}
  .section-tight{padding:64px 0;}
  .section-alt{background:var(--muted);}
  .section-head{margin-bottom:40px;max-width:760px;}
  .section-kicker{
    display:flex;
    align-items:center;
    gap:10px;
    font-size:13px;
    font-weight:600;
    letter-spacing:.06em;
    color:var(--accent);
    margin-bottom:14px;
  }
  .section-kicker::before{
    content:"";
    width:22px;height:2px;
    background:var(--accent);
    border-radius:2px;
  }
  .section-head p{
    margin-top:14px;
    color:var(--text-2);
    font-size:16px;
  }

  /* ---------- address list ---------- */
  .address-list{
    border-top:1px solid var(--border);
  }
  .address-item{
    display:flex;
    align-items:center;
    gap:26px;
    padding:30px 18px;
    border-bottom:1px solid var(--border);
    border-radius:0;
    transition:background .3s var(--ease);
  }
  .address-item:hover{background:rgba(255,255,255,.78);}
  .address-item:focus-visible{background:rgba(255,255,255,.78);}
  .entry-no{
    flex:0 0 62px;
    font-family:"Inter",system-ui,sans-serif;
    font-variant-numeric:tabular-nums;
    font-size:26px;
    font-weight:800;
    color:var(--border);
    letter-spacing:-0.02em;
    transition:color .3s var(--ease);
  }
  .address-item:hover .entry-no{color:var(--accent);}
  .entry-body{flex:1 1 auto;min-width:0;}
  .entry-title{
    font-size:20px;
    font-weight:600;
    line-height:1.5;
    margin-bottom:4px;
    transition:color .3s var(--ease);
  }
  .address-item:hover .entry-title{color:var(--brand-light);}
  .entry-desc{
    margin:0;
    font-size:15px;
    color:var(--text-2);
    line-height:1.75;
  }
  .entry-meta{
    flex:0 0 auto;
    display:flex;
    flex-direction:column;
    align-items:flex-end;
    gap:8px;
  }
  .entry-time{
    font-size:13px;
    color:var(--text-2);
    font-variant-numeric:tabular-nums;
    white-space:nowrap;
  }
  .entry-arrow{
    flex:0 0 auto;
    color:var(--border);
    font-size:15px;
    transition:transform .3s var(--ease),color .3s var(--ease);
  }
  .address-item:hover .entry-arrow{transform:translateX(4px);color:var(--accent);}

  .badge{
    display:inline-flex;
    align-items:center;
    gap:6px;
    padding:4px 12px;
    border-radius:999px;
    border:1px solid var(--border);
    background:var(--card);
    font-size:12px;
    font-weight:600;
    letter-spacing:.02em;
    white-space:nowrap;
  }
  .badge-mint{border-color:rgba(95,211,168,.55);color:#1E6B50;background:rgba(95,211,168,.14);}
  .badge-accent{border-color:rgba(255,90,31,.45);color:#B03A0F;background:rgba(255,90,31,.10);}
  .badge-ink{border-color:rgba(16,26,22,.22);color:var(--ink);}

  /* ---------- verify block ---------- */
  .verify-grid{
    display:grid;
    grid-template-columns:1.05fr 1fr;
    gap:56px;
    align-items:center;
  }
  .verify-media{
    position:relative;
    border-radius:var(--radius-card);
    overflow:hidden;
    border:1px solid var(--border);
    box-shadow:var(--shadow-1);
  }
  .verify-media img{
    width:100%;
    aspect-ratio:4/3;
    object-fit:cover;
    transition:transform .6s var(--ease);
  }
  .verify-media:hover img{transform:scale(1.03);}
  .step-list{counter-reset:step;margin-top:8px;}
  .step-item{
    display:flex;
    gap:18px;
    padding:22px 0;
    border-top:1px solid var(--border);
  }
  .step-item:last-child{border-bottom:1px solid var(--border);}
  .step-index{
    flex:0 0 40px;
    height:40px;
    display:grid;
    place-items:center;
    border-radius:10px;
    background:var(--card);
    border:1px solid var(--border);
    font-family:"Inter",system-ui,sans-serif;
    font-weight:700;
    font-size:14px;
    color:var(--brand);
    font-variant-numeric:tabular-nums;
  }
  .step-item h3{margin-bottom:4px;}
  .step-item p{margin:0;font-size:15px;color:var(--text-2);}

  /* ---------- choose grid ---------- */
  .choose-grid{
    display:grid;
    grid-template-columns:1.35fr 1fr;
    gap:26px;
    align-items:stretch;
  }
  .choose-main{
    position:relative;
    border-radius:var(--radius-card);
    overflow:hidden;
    border:1px solid var(--border);
    background:var(--brand);
    color:#fff;
    min-height:360px;
    display:flex;
    flex-direction:column;
    justify-content:flex-end;
    padding:32px;
    transition:border-color .3s var(--ease),box-shadow .3s var(--ease);
  }
  .choose-main img{
    position:absolute;
    inset:0;
    width:100%;height:100%;
    object-fit:cover;
    opacity:.42;
  }
  .choose-main > *{position:relative;}
  .choose-main h3{font-size:24px;font-weight:700;margin-bottom:10px;}
  .choose-main p{font-size:15px;color:rgba(255,255,255,.82);max-width:44ch;}
  .choose-main:hover{border-color:var(--accent);box-shadow:var(--shadow-2);}
  .choose-side{display:grid;gap:26px;}
  .choose-card{
    background:var(--card);
    border:1px solid var(--border);
    border-radius:var(--radius-card);
    padding:26px;
    box-shadow:var(--shadow-1);
    transition:border-color .3s var(--ease),box-shadow .3s var(--ease),transform .3s var(--ease);
  }
  .choose-card:hover{border-color:var(--accent);box-shadow:var(--shadow-2);transform:translateY(-3px);}
  .choose-card h3{margin-bottom:8px;}
  .choose-card p{font-size:15px;color:var(--text-2);margin:0;}
  .choose-tag{
    display:inline-block;
    font-size:12px;
    font-weight:700;
    letter-spacing:.06em;
    color:var(--accent);
    margin-bottom:10px;
  }

  /* ---------- faq ---------- */
  .faq-item{border-top:1px solid var(--border);}
  .faq-item:last-of-type{border-bottom:1px solid var(--border);}
  .faq-item summary{
    list-style:none;
    cursor:pointer;
    display:flex;
    align-items:flex-start;
    justify-content:space-between;
    gap:20px;
    padding:24px 0;
    font-size:18px;
    font-weight:600;
    transition:color .25s var(--ease);
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary:hover{color:var(--brand-light);}
  .faq-item summary::after{
    content:"+";
    flex:0 0 auto;
    font-family:"Inter",system-ui,sans-serif;
    font-size:24px;
    line-height:1;
    color:var(--accent);
    transition:transform .35s var(--ease);
  }
  .faq-item[open] summary::after{transform:rotate(45deg);}
  .faq-answer{
    padding:0 0 26px;
    max-width:70ch;
    color:var(--text-2);
    font-size:16px;
  }

  /* ---------- related ---------- */
  .related-row{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:20px;
  }
  .related-link{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:14px;
    padding:20px 22px;
    background:var(--card);
    border:1px solid var(--border);
    border-radius:var(--radius-card);
    font-weight:600;
    box-shadow:var(--shadow-1);
    transition:border-color .3s var(--ease),box-shadow .3s var(--ease),transform .3s var(--ease);
  }
  .related-link span.sub{
    display:block;
    font-size:13px;
    font-weight:400;
    color:var(--text-2);
    margin-top:4px;
  }
  .related-link i{color:var(--border);transition:transform .3s var(--ease),color .3s var(--ease);}
  .related-link:hover{border-color:var(--accent);box-shadow:var(--shadow-2);transform:translateY(-3px);}
  .related-link:hover i{transform:translateX(4px);color:var(--accent);}

  /* ---------- cta band ---------- */
  .cta-band{
    background:var(--brand-dark);
    color:#fff;
    padding:64px 0;
    margin-top:88px;
  }
  .cta-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:36px;
    flex-wrap:wrap;
  }
  .cta-inner h2{font-size:clamp(24px,3vw,34px);margin-bottom:8px;}
  .cta-inner p{color:rgba(255,255,255,.72);font-size:15px;margin:0;max-width:46ch;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
  .copied-tip{
    font-size:13px;
    color:var(--mint);
    margin-left:6px;
    opacity:0;
    transition:opacity .3s var(--ease);
  }
  .copied-tip.show{opacity:1;}

  /* ---------- footer ---------- */
  .site-footer{
    background:var(--brand-dark);
    color:rgba(255,255,255,.70);
    border-top:1px solid rgba(255,255,255,.10);
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.5fr 1fr 1fr 1fr;
    gap:44px;
    padding:72px 0 48px;
  }
  .footer-brand{
    display:inline-flex;
    align-items:center;
    gap:10px;
    font-size:18px;
    font-weight:800;
    color:#fff;
    margin-bottom:16px;
  }
  .footer-brand .logo-mark{background:rgba(255,255,255,.12);}
  .footer-about{font-size:14px;line-height:1.85;max-width:36ch;color:rgba(255,255,255,.62);}
  .footer-col h4{
    font-size:14px;
    font-weight:700;
    color:#fff;
    letter-spacing:.04em;
    margin-bottom:16px;
  }
  .footer-col ul li{margin-bottom:11px;}
  .footer-col ul li a{font-size:14px;color:rgba(255,255,255,.66);}
  .footer-col ul li a:hover{color:var(--accent);}
  .footer-bottom{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    padding:22px 0 28px;
    border-top:1px solid rgba(255,255,255,.12);
    font-size:13px;
    color:rgba(255,255,255,.50);
  }
  .footer-bottom a{color:rgba(255,255,255,.72);text-decoration:underline;text-underline-offset:3px;}
  .footer-bottom a:hover{color:var(--accent);}

  /* ---------- mobile tab ---------- */
  .mobile-tab{
    display:none;
    position:fixed;
    left:0;right:0;bottom:0;
    z-index:70;
    background:rgba(255,255,255,.97);
    backdrop-filter:blur(10px);
    border-top:1px solid var(--border);
    padding-bottom:env(safe-area-inset-bottom);
  }
  .mobile-tab ul{
    display:flex;
    align-items:stretch;
  }
  .mobile-tab li{flex:1;}
  .mobile-tab a{
    position:relative;
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:4px;
    min-height:58px;
    padding:8px 2px;
    font-size:11px;
    color:rgba(16,26,22,.5);
    transition:color .25s var(--ease);
  }
  .mobile-tab a i{font-size:16px;}
  .mobile-tab a.active{color:var(--accent);font-weight:700;}
  .mobile-tab a.active::before{
    content:"";
    position:absolute;
    top:0;left:50%;
    transform:translateX(-50%);
    width:22px;height:2px;
    border-radius:2px;
    background:var(--accent);
  }

  /* ---------- to top ---------- */
  .to-top{
    position:fixed;
    right:22px;
    bottom:26px;
    width:44px;height:44px;
    border-radius:50%;
    border:1px solid var(--border);
    background:var(--card);
    color:var(--ink);
    display:grid;
    place-items:center;
    cursor:pointer;
    opacity:0;
    pointer-events:none;
    transform:translateY(8px);
    transition:opacity .3s var(--ease),transform .3s var(--ease),border-color .3s var(--ease),color .3s var(--ease);
    z-index:65;
  }
  .to-top.show{opacity:1;pointer-events:auto;transform:translateY(0);}
  .to-top:hover{border-color:var(--accent);color:var(--accent);}

  /* ---------- reveal ---------- */
  .reveal{opacity:0;transform:translateY(8px);transition:opacity .48s var(--ease),transform .48s var(--ease);}
  .reveal.in{opacity:1;transform:none;}

  /* ---------- responsive ---------- */
  @media (max-width:1024px){
    .nav-links,.brand-note{display:none;}
    .nav-cta{margin-left:auto;}
    .verify-grid{grid-template-columns:1fr;gap:36px;}
    .choose-grid{grid-template-columns:1fr;}
    .choose-main{min-height:300px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
    .related-row{grid-template-columns:1fr;}
  }
  @media (max-width:900px){
    .mobile-tab{display:block;}
    .page-main{padding-bottom:88px;}
    .to-top{bottom:78px;}
  }
  @media (max-width:768px){
    body{font-size:16px;}
    .section{padding:64px 0;}
    .section-tight{padding:48px 0;}
    .nav-wrap{height:66px;gap:14px;}
    .logo{font-size:16px;}
    .logo-mark{width:34px;height:34px;font-size:12px;}
    .nav-cta span.long{display:none;}
    .address-item{flex-wrap:wrap;gap:14px;padding:24px 4px;}
    .entry-no{flex:0 0 44px;font-size:20px;}
    .entry-title{font-size:18px;}
    .entry-meta{flex-direction:row;align-items:center;width:100%;justify-content:space-between;}
    .entry-arrow{display:none;}
    .footer-grid{grid-template-columns:1fr;gap:32px;padding:56px 0 36px;}
    .cta-band{padding:52px 0;margin-top:64px;}
    .cta-inner{gap:22px;}
  }
  @media (max-width:520px){
    .container-x{padding:0 18px;}
    .filter-bar{padding:12px;}
    .filter-bar .fb-right{margin-left:0;width:100%;}
    .btn{width:100%;}
    .cta-actions{width:100%;}
    .btn-sm{width:auto;}
    .nav-cta{min-height:38px;padding:0 13px;}
  }
  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{transition:none !important;animation:none !important;}
    .reveal{opacity:1;transform:none;}
    html{scroll-behavior:auto;}
  }

/* roulang page: category2 */
:root{
  --ink:#101A16; --brand:#0E3B2E; --brand-dark:#0A2A21; --brand-light:#16513F;
  --accent:#FF5A1F; --accent-hover:#E24A12; --mint:#5FD3A8;
  --paper:#F6F4EE; --card:#FFFFFF; --muted:#EDE9E0; --border:#DDD6C7; --text2:#6B6A61;
  --r-card:14px; --r-btn:12px; --r-input:10px;
  --shadow-1:0 1px 2px rgba(16,26,22,.06);
  --shadow-2:0 12px 30px -14px rgba(16,26,22,.30);
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;line-height:1.85;
  font-feature-settings:"kern" 1,"liga" 1;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{margin:0;font-weight:700;line-height:1.25;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,textarea{font:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
::selection{background:rgba(255,90,31,.22)}

.container-x{width:100%;max-width:1280px;margin:0 auto;padding:0 24px}
.skip-link{position:absolute;left:-9999px;top:0;background:#fff;padding:10px 16px;border-radius:10px;z-index:200}
.skip-link:focus{left:16px;top:12px}

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(246,244,238,.9);
  -webkit-backdrop-filter:saturate(160%) blur(10px);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .3s var(--ease),background .3s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--border);background:rgba(246,244,238,.97)}
.nav-wrap{display:flex;align-items:center;gap:26px;height:72px}
.logo{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;letter-spacing:-.01em;flex:none}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:10px;background:var(--brand);color:#fff;
  font-size:13px;font-weight:800;letter-spacing:.02em;
}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;padding:8px 13px;border-radius:10px;font-size:15px;
  transition:color .25s var(--ease),background .25s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;border-radius:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left center;
  transition:transform .32s var(--ease);
}
.nav-link:hover{color:var(--accent);background:rgba(255,90,31,.07)}
.nav-link.active{color:var(--brand);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}
.brand-note{font-size:13px;color:var(--text2);letter-spacing:.02em;white-space:nowrap}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;white-space:nowrap;
  transition:background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease),box-shadow .25s var(--ease);
}
.btn i{transition:transform .3s var(--ease)}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:hover i{transform:translateX(4px)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--brand);border-color:var(--brand);color:#fff}
.btn-light{background:transparent;border-color:rgba(255,255,255,.42);color:#fff}
.btn-light:hover{background:#fff;border-color:#fff;color:var(--brand)}
.btn-light.is-done{background:var(--mint);border-color:var(--mint);color:#08301f}
.btn-sm{min-height:38px;padding:0 15px;font-size:14px;border-radius:10px}
.btn-block{width:100%}
.text-link{color:var(--accent);font-weight:600;border-bottom:1px solid rgba(255,90,31,.35);transition:border-color .25s var(--ease),color .25s var(--ease)}
.text-link:hover{color:var(--accent-hover);border-bottom-color:var(--accent-hover)}

/* ============ 分类页头 ============ */
.category-hero{position:relative;overflow:hidden;background:var(--brand)}
.category-hero .hero-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:.30;
}
.category-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(96deg,rgba(10,42,33,.95) 0%,rgba(14,59,46,.78) 52%,rgba(14,59,46,.42) 100%);
}
.hero-inner{position:relative;z-index:2;color:#fff;padding:44px 0 56px}
.crumb{display:flex;align-items:center;gap:10px;font-size:13.5px;color:rgba(255,255,255,.62);letter-spacing:.01em;flex-wrap:wrap}
.crumb a{transition:color .25s var(--ease)}
.crumb a:hover{color:var(--accent)}
.crumb .sep{opacity:.45}
.crumb .now{color:rgba(255,255,255,.9)}
.category-hero h1{
  font-size:clamp(30px,4.4vw,52px);font-weight:800;line-height:1.14;letter-spacing:-.02em;
  margin:22px 0 18px;max-width:22em;
}
.hero-sub{font-size:clamp(15px,1.4vw,17px);line-height:1.9;color:rgba(255,255,255,.78);max-width:46em}
.hero-meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:26px;font-size:13.5px;color:rgba(255,255,255,.7)}
.hero-meta .dot{width:6px;height:6px;border-radius:50%;background:var(--mint);display:inline-block}
.hero-meta .divider{width:1px;height:14px;background:rgba(255,255,255,.24)}
.filter-bar{
  position:relative;z-index:2;margin-top:34px;
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  padding:12px 14px;border-radius:14px;
  background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.16);
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.filter-bar .fb-label{font-size:13px;color:rgba(255,255,255,.55);letter-spacing:.02em;margin-right:4px}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 13px;border-radius:999px;font-size:13px;
  border:1px solid rgba(255,255,255,.26);color:rgba(255,255,255,.82);
  transition:background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease);
  cursor:default;
}
.chip:hover{background:rgba(255,255,255,.14);color:#fff}
.chip.is-on{background:var(--accent);border-color:var(--accent);color:#fff}

/* ============ 通用板块 ============ */
.section{padding:92px 0}
.section.tight{padding:72px 0}
.section-head{max-width:56em;margin-bottom:44px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;
  letter-spacing:.08em;color:var(--accent);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:20px;height:2px;background:var(--accent);border-radius:2px}
.section-head h2{font-size:clamp(23px,2.9vw,34px);font-weight:800;letter-spacing:-.02em}
.section-head p{margin-top:14px;color:var(--text2);font-size:16.5px;line-height:1.9}
.bg-muted{background:var(--muted)}
.bg-white{background:#fff}
.hairline{height:1px;background:var(--border);border:none;margin:0}

/* ============ 步骤索引 ============ */
.step-list{border-top:1px solid var(--border)}
.step-row{
  display:grid;grid-template-columns:78px 1fr 220px;gap:26px;align-items:start;
  padding:30px 0;border-bottom:1px solid var(--border);
  transition:background .3s var(--ease);
}
.step-row:hover{background:rgba(255,255,255,.72)}
.step-num{font-size:15px;font-weight:800;color:var(--accent);letter-spacing:.04em;font-variant-numeric:tabular-nums;padding-top:3px}
.step-row h3{font-size:18.5px;font-weight:700;margin-bottom:8px}
.step-row p{color:var(--text2);font-size:15.5px;line-height:1.9}
.step-note{font-size:13.5px;color:var(--text2);border-left:2px solid var(--border);padding-left:14px;line-height:1.8}

/* ============ 杂志式错位栅格 ============ */
.mag-grid{display:grid;grid-template-columns:1fr 1fr;gap:34px 30px;align-items:start}
.mag-item:nth-child(even){margin-top:58px}
.mag-card{
  display:block;background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease),transform .3s var(--ease);
}
.mag-card:hover{border-color:var(--accent);box-shadow:var(--shadow-2);transform:translateY(-4px)}
.mag-card .thumb{overflow:hidden;background:var(--muted);aspect-ratio:16/10}
.mag-item.tall .thumb{aspect-ratio:4/5}
.mag-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.mag-card:hover .thumb img{transform:scale(1.03)}
.mag-body{padding:24px 24px 26px}
.mag-body h3{font-size:19px;font-weight:700;margin:12px 0 10px;transition:color .25s var(--ease)}
.mag-card:hover .mag-body h3{color:var(--accent)}
.mag-body p{color:var(--text2);font-size:15.5px;line-height:1.88}
.mag-foot{margin-top:16px;display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--accent);font-weight:600}
.mag-foot i{transition:transform .3s var(--ease)}
.mag-card:hover .mag-foot i{transform:translateX(4px)}

.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;
  font-size:12px;font-weight:500;letter-spacing:.01em;
  border:1px solid var(--border);color:var(--text2);background:#fff;
}
.badge-accent{border-color:rgba(255,90,31,.34);color:var(--accent);background:rgba(255,90,31,.07)}
.badge-mint{border-color:rgba(95,211,168,.55);color:#1b7a60;background:rgba(95,211,168,.15)}

/* ============ 准备事项 / 数据条 ============ */
.prep-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:start}
.prep-item{display:flex;gap:18px;padding:22px 0;border-bottom:1px solid var(--border)}
.prep-item:first-child{border-top:1px solid var(--border)}
.prep-icon{
  flex:none;width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:rgba(14,59,46,.07);color:var(--brand);font-size:16px;
}
.prep-item h3{font-size:17px;font-weight:700;margin-bottom:6px}
.prep-item p{color:var(--text2);font-size:15.5px;line-height:1.88}
.stat-panel{
  background:var(--brand);color:#fff;border-radius:18px;padding:34px 32px;
  position:relative;overflow:hidden;
}
.stat-panel::after{
  content:"";position:absolute;right:-40px;top:-40px;width:180px;height:180px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,90,31,.32),transparent 68%);
}
.stat-panel h3{font-size:17px;font-weight:700;margin-bottom:22px;position:relative;z-index:2}
.stat-panel li{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  padding:14px 0;border-bottom:1px solid rgba(255,255,255,.14);position:relative;z-index:2;
}
.stat-panel li:last-child{border-bottom:none}
.stat-panel .k{font-size:14.5px;color:rgba(255,255,255,.7)}
.stat-panel .v{font-size:22px;font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.stat-panel .v small{font-size:13px;font-weight:500;color:rgba(255,255,255,.6);margin-left:4px}
.stat-tip{margin-top:22px;font-size:13.5px;color:rgba(255,255,255,.6);position:relative;z-index:2;line-height:1.8}

/* ============ 报错对照 ============ */
.fault-head,.fault-row{
  display:grid;grid-template-columns:1.1fr 1.1fr 1fr 40px;gap:22px;align-items:center;
}
.fault-head{
  padding:0 20px 14px;font-size:13px;letter-spacing:.06em;color:var(--text2);text-transform:uppercase;
}
.fault-row{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:20px;margin-bottom:12px;box-shadow:var(--shadow-1);
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease),transform .3s var(--ease);
}
.fault-row:hover{border-color:var(--accent);box-shadow:var(--shadow-2);transform:translateX(3px)}
.fault-row .code{font-size:15px;font-weight:700;color:var(--ink)}
.fault-row .cause,.fault-row .fix{font-size:14.5px;color:var(--text2);line-height:1.8}
.fault-row .arrow{color:var(--accent);text-align:right;transition:transform .3s var(--ease)}
.fault-row:hover .arrow{transform:translateX(4px)}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px}
.faq-item{border-bottom:1px solid var(--border)}
.faq-item:first-child{border-top:1px solid var(--border)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;
  gap:24px;padding:24px 0;font-size:17px;font-weight:600;
  transition:color .25s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--accent)}
.faq-item summary::after{
  content:"+";flex:none;font-size:22px;font-weight:400;line-height:1.1;color:var(--accent);
  transition:transform .32s var(--ease);
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-answer{padding:0 0 26px;color:var(--text2);font-size:16px;line-height:1.9;max-width:60em}

/* ============ 相关分类 + CTA ============ */
.cross-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:44px}
.cross-card{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:20px 22px;box-shadow:var(--shadow-1);
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease),transform .3s var(--ease);
}
.cross-card:hover{border-color:var(--accent);box-shadow:var(--shadow-2);transform:translateY(-3px)}
.cross-card .cc-title{font-size:16.5px;font-weight:700}
.cross-card .cc-desc{font-size:13.5px;color:var(--text2);margin-top:4px}
.cross-card i{color:var(--accent);transition:transform .3s var(--ease)}
.cross-card:hover i{transform:translateX(4px)}

.cta-band{
  background:var(--brand);color:#fff;border-radius:18px;
  padding:42px 40px;display:flex;align-items:center;justify-content:space-between;
  gap:30px;flex-wrap:wrap;position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;left:-60px;bottom:-80px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,90,31,.28),transparent 70%);
}
.cta-band .cta-text{position:relative;z-index:2;max-width:32em}
.cta-band h2{font-size:clamp(21px,2.4vw,28px);font-weight:800;letter-spacing:-.02em}
.cta-band p{margin-top:12px;color:rgba(255,255,255,.72);font-size:15px;line-height:1.85}
.cta-actions{position:relative;z-index:2;display:flex;gap:12px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-dark);color:rgba(255,255,255,.72);padding:76px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:42px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:800;margin-bottom:18px}
.footer-about{font-size:14px;line-height:1.95;color:rgba(255,255,255,.6);max-width:36em}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px}
.footer-col ul li{margin-bottom:11px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.66);transition:color .25s var(--ease)}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.48);
}
.footer-bottom a{color:rgba(255,255,255,.68);border-bottom:1px solid rgba(255,255,255,.24);transition:color .25s var(--ease)}
.footer-bottom a:hover{color:var(--accent)}

/* ============ 回到顶部 ============ */
.to-top{
  position:fixed;right:22px;bottom:30px;width:44px;height:44px;border-radius:50%;
  border:1px solid var(--border);background:#fff;color:var(--ink);
  display:grid;place-items:center;z-index:75;
  opacity:0;pointer-events:none;transform:translateY(8px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease);
}
.to-top.show{opacity:1;pointer-events:auto;transform:translateY(0)}
.to-top:hover{background:var(--accent);border-color:var(--accent);color:#fff}

/* ============ 移动端底部 Tab ============ */
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:90;display:none;
  background:rgba(255,255,255,.97);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-top:1px solid var(--border);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tabbar ul{display:grid;grid-template-columns:repeat(5,1fr)}
.mobile-tabbar a{
  position:relative;display:flex;flex-direction:column;align-items:center;gap:4px;
  padding:10px 2px 9px;font-size:11px;letter-spacing:.01em;color:rgba(16,26,22,.5);
  transition:color .25s var(--ease);
}
.mobile-tabbar a i{font-size:17px}
.mobile-tabbar a.active{color:var(--accent)}
.mobile-tabbar a.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:22px;height:2px;border-radius:2px;background:var(--accent);
}

/* ============ 响应式 ============ */
@media (max-width:1080px){
  .brand-note{display:none}
  .step-row{grid-template-columns:64px 1fr 190px;gap:20px}
  .prep-grid{grid-template-columns:1fr;gap:40px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:34px}
}
@media (max-width:900px){
  .nav-links{display:none}
  .nav-cta{display:none}
  .mobile-tabbar{display:block}
  .page-main{padding-bottom:96px}
  .to-top{bottom:88px}
  .section{padding:64px 0}
  .section.tight{padding:56px 0}
  .hero-inner{padding:34px 0 44px}
  .mag-grid{grid-template-columns:1fr;gap:24px}
  .mag-item:nth-child(even){margin-top:0}
  .mag-item.tall .thumb{aspect-ratio:16/10}
  .cross-grid{grid-template-columns:1fr}
  .fault-head{display:none}
  .fault-row{grid-template-columns:1fr;gap:10px}
  .fault-row .arrow{display:none}
  .cta-band{padding:32px 26px}
}
@media (max-width:640px){
  .container-x{padding:0 16px}
  .nav-wrap{height:62px}
  .logo{font-size:16px}
  .logo-mark{width:32px;height:32px;font-size:12px}
  .category-hero h1{margin:18px 0 14px}
  .step-row{grid-template-columns:1fr;gap:12px;padding:24px 0}
  .step-note{border-left:none;border-top:2px solid var(--border);padding-left:0;padding-top:10px}
  .mag-body{padding:20px 18px 22px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category3 */
:root{
  --ink:#101A16;
  --brand:#0E3B2E;
  --brand-dark:#0A2A21;
  --brand-light:#16513F;
  --accent:#FF5A1F;
  --accent-hover:#E24A12;
  --mint:#5FD3A8;
  --paper:#F6F4EE;
  --card:#FFFFFF;
  --muted:#EDE9E0;
  --border:#DDD6C7;
  --text-2:#6B6A61;
  --radius-card:14px;
  --radius-btn:12px;
  --radius-input:10px;
  --shadow-1:0 1px 2px rgba(16,26,22,.06);
  --shadow-2:0 12px 30px -14px rgba(16,26,22,.30);
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  text-wrap:pretty;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(255,90,31,.22);}
.container-x{width:100%;max-width:1240px;margin:0 auto;padding:0 22px;}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,238,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease),background-color .3s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--border);box-shadow:0 8px 22px -20px rgba(16,26,22,.6);}
.nav-wrap{display:flex;align-items:center;gap:26px;height:74px;}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:18px;letter-spacing:.01em;color:var(--ink);white-space:nowrap;}
.logo-mark{
  display:inline-grid;place-items:center;width:34px;height:34px;border-radius:9px;
  background:var(--brand);color:#fff;font-family:"Inter",system-ui,sans-serif;
  font-size:13px;font-weight:800;letter-spacing:.03em;
}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{position:relative;padding:9px 13px;border-radius:9px;font-size:15px;color:var(--ink);transition:color .25s var(--ease),background-color .25s var(--ease);}
.nav-link:hover{color:var(--accent);background:var(--muted);}
.nav-link.active{color:var(--brand);font-weight:600;}
.nav-link.active::after{content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;border-radius:2px;background:var(--accent);}
.brand-note{font-size:13px;color:var(--text-2);letter-spacing:.02em;white-space:nowrap;}
.nav-cta{margin-left:4px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);font-size:15px;font-weight:600;
  padding:12px 20px;border:1px solid transparent;cursor:pointer;line-height:1.2;
  transition:background-color .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease),box-shadow .25s var(--ease);
}
.btn i{transition:transform .25s var(--ease);}
.btn:hover i{transform:translateX(3px);}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--accent);color:#fff;}
.btn-primary:hover{background:var(--accent-hover);box-shadow:0 10px 24px -14px rgba(255,90,31,.9);}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--ink);}
.btn-ghost:hover{background:var(--brand);border-color:var(--brand);color:#fff;}
.btn-on-dark{background:rgba(255,255,255,.07);border-color:rgba(255,255,255,.34);color:#fff;}
.btn-on-dark:hover{background:#fff;color:var(--brand);border-color:#fff;}
.btn-on-dark.is-done{background:var(--mint);border-color:var(--mint);color:var(--brand-dark);}
.btn-sm{padding:9px 16px;font-size:14px;}

/* ---------- 页头 ---------- */
.page-hero{position:relative;overflow:hidden;background:var(--brand-dark);color:#fff;}
.page-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.32;filter:saturate(.85);
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(10,42,33,.94) 0%,rgba(10,42,33,.78) 52%,rgba(10,42,33,.42) 100%);
}
.page-hero-inner{position:relative;z-index:2;padding:56px 0 62px;}
.crumbs{display:flex;align-items:center;gap:9px;font-size:13px;color:rgba(255,255,255,.68);letter-spacing:.02em;}
.crumbs a{transition:color .25s var(--ease);}
.crumbs a:hover{color:var(--accent);}
.crumbs span{opacity:.55;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin:22px 0 0;
  font-size:12.5px;letter-spacing:.04em;color:var(--mint);
  border:1px solid rgba(95,211,168,.42);border-radius:999px;padding:5px 13px;
}
.page-hero h1{
  margin:20px 0 0;font-size:clamp(30px,4.6vw,52px);font-weight:800;
  line-height:1.14;letter-spacing:-.02em;max-width:20ch;
}
.page-hero-lead{margin:18px 0 0;max-width:62ch;font-size:16.5px;line-height:1.9;color:rgba(255,255,255,.82);}
.hero-metrics{display:flex;flex-wrap:wrap;gap:28px 46px;margin-top:34px;padding-top:24px;border-top:1px solid rgba(255,255,255,.18);}
.hero-metric b{display:block;font-family:"Inter",system-ui,sans-serif;font-size:26px;font-weight:700;letter-spacing:-.01em;font-variant-numeric:tabular-nums;line-height:1.3;}
.hero-metric span{font-size:13px;color:rgba(255,255,255,.66);letter-spacing:.02em;}

/* ---------- 筛选条 ---------- */
.filter-bar{border-bottom:1px solid var(--border);background:var(--paper);}
.filter-inner{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:14px 0;}
.filter-inner .f-label{font-size:13px;color:var(--text-2);letter-spacing:.02em;margin-right:2px;}
.chip{
  display:inline-flex;align-items:center;border:1px solid var(--border);border-radius:999px;
  padding:5px 13px;font-size:13px;color:var(--text-2);background:var(--card);
  transition:color .25s var(--ease),border-color .25s var(--ease),background-color .25s var(--ease);
}
.chip:hover{color:var(--accent);border-color:var(--accent);}
.chip.is-active{background:var(--brand);border-color:var(--brand);color:#fff;}
.filter-hint{margin-left:auto;font-size:12.5px;color:var(--text-2);}

/* ---------- 板块 ---------- */
.section{padding:88px 0;}
.section-alt{background:var(--muted);}
.section-dark{background:var(--brand-dark);color:#fff;}
.section-head{max-width:62ch;}
.section-index{
  display:inline-block;font-family:"Inter",system-ui,sans-serif;font-size:12.5px;font-weight:700;
  letter-spacing:.16em;color:var(--accent);margin-bottom:12px;
}
.section-head h2{margin:0;font-size:clamp(23px,3vw,34px);font-weight:700;line-height:1.28;letter-spacing:-.015em;}
.section-head p{margin:14px 0 0;color:var(--text-2);font-size:16px;}
.section-dark .section-head p{color:rgba(255,255,255,.72);}

/* ---------- 时间轴 ---------- */
.timeline{margin-top:48px;}
.tl-item{display:grid;grid-template-columns:62px 1fr;gap:22px;}
.tl-item + .tl-item{margin-top:30px;}
.tl-axis{position:relative;display:flex;justify-content:center;}
.tl-axis::before{content:"";position:absolute;top:16px;bottom:-42px;width:1px;background:var(--border);}
.tl-item:last-child .tl-axis::before{display:none;}
.tl-dot{
  position:relative;z-index:1;width:14px;height:14px;border-radius:50%;margin-top:9px;
  background:var(--accent);box-shadow:0 0 0 5px rgba(255,90,31,.13);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.tl-item:hover .tl-dot{transform:scale(1.18);box-shadow:0 0 0 8px rgba(255,90,31,.16);}
.tl-card{
  display:grid;grid-template-columns:216px 1fr;gap:24px;align-items:stretch;
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:20px;box-shadow:var(--shadow-1);
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease),transform .3s var(--ease);
}
.tl-card:hover{border-color:var(--accent);box-shadow:var(--shadow-2);transform:translateY(-3px);}
.tl-media{overflow:hidden;border-radius:10px;aspect-ratio:4/3;background:var(--muted);}
.tl-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease);}
.tl-card:hover .tl-media img{transform:scale(1.03);}
.tl-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.badge{
  display:inline-flex;align-items:center;gap:6px;border-radius:999px;font-size:12px;
  padding:3px 11px;border:1px solid var(--border);color:var(--text-2);background:var(--card);letter-spacing:.02em;
}
.badge-accent{border-color:rgba(255,90,31,.42);color:var(--accent);background:rgba(255,90,31,.07);}
.badge-mint{border-color:rgba(95,211,168,.55);color:#1c6a4f;background:rgba(95,211,168,.13);}
.badge-ink{border-color:rgba(16,26,22,.28);color:var(--ink);background:var(--muted);}
.tl-step{font-family:"Inter",system-ui,sans-serif;font-size:12.5px;color:var(--text-2);letter-spacing:.05em;font-variant-numeric:tabular-nums;}
.tl-body h3{margin:12px 0 0;font-size:19px;font-weight:600;line-height:1.42;letter-spacing:-.01em;}
.tl-body p{margin:10px 0 0;color:var(--text-2);font-size:15.5px;line-height:1.85;}
.dot-list{list-style:none;margin:14px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:8px 22px;}
.dot-list li{position:relative;padding-left:16px;font-size:14px;color:var(--ink);}
.dot-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--accent);
}

/* ---------- 确认清单 ---------- */
.check-grid{display:grid;grid-template-columns:0.85fr 1.15fr;gap:56px;align-items:start;margin-top:8px;}
.check-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--border);}
.check-list li{display:grid;grid-template-columns:52px 1fr;gap:18px;padding:22px 0;border-bottom:1px solid var(--border);}
.check-list .num{font-family:"Inter",system-ui,sans-serif;font-size:20px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;line-height:1.3;}
.check-list h3{margin:0;font-size:17.5px;font-weight:600;}
.check-list p{margin:8px 0 0;color:var(--text-2);font-size:15.5px;}

/* ---------- 设备对照 ---------- */
.device-table{margin-top:40px;border:1px solid var(--border);border-radius:var(--radius-card);overflow:hidden;background:var(--card);}
.device-row{display:grid;grid-template-columns:0.8fr 1.4fr 0.9fr;gap:22px;padding:20px 24px;border-bottom:1px solid var(--border);transition:background-color .25s var(--ease),border-color .25s var(--ease);}
.device-row:last-child{border-bottom:0;}
.device-row:hover{background:#fbf9f4;}
.device-row.head{background:var(--muted);font-size:13px;color:var(--text-2);letter-spacing:.06em;padding:13px 24px;}
.device-name{display:flex;align-items:center;gap:10px;font-weight:600;font-size:16px;}
.device-name i{color:var(--brand-light);}
.device-desc{color:var(--text-2);font-size:15px;}
.device-tag{font-family:"Inter",system-ui,sans-serif;font-size:14px;color:var(--brand);font-variant-numeric:tabular-nums;}

/* ---------- FAQ ---------- */
.faq-wrap{margin-top:36px;border-top:1px solid var(--border);}
.faq-item{border-bottom:1px solid var(--border);}
.faq-item summary{
  display:flex;align-items:center;gap:18px;cursor:pointer;list-style:none;
  padding:22px 4px;font-size:17px;font-weight:600;transition:color .25s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--accent);}
.faq-item summary .plus{
  margin-left:auto;flex:none;width:26px;height:26px;border:1px solid var(--border);border-radius:8px;
  display:grid;place-items:center;color:var(--accent);font-size:13px;
  transition:transform .35s var(--ease),border-color .3s var(--ease),background-color .3s var(--ease);
}
.faq-item[open] summary .plus{transform:rotate(45deg);border-color:var(--accent);background:rgba(255,90,31,.08);}
.faq-answer{padding:0 4px 24px;color:var(--text-2);font-size:15.5px;line-height:1.9;max-width:80ch;}

/* ---------- 互链 ---------- */
.cross{margin-top:0;}
.cross-list{margin-top:28px;border-top:1px solid var(--border);}
.cross-row{
  display:flex;align-items:center;gap:18px;padding:20px 4px;border-bottom:1px solid var(--border);
  transition:background-color .25s var(--ease),padding-left .3s var(--ease);
}
.cross-row:hover{background:rgba(255,255,255,.6);padding-left:12px;}
.cross-row .c-idx{font-family:"Inter",system-ui,sans-serif;font-size:13px;color:var(--text-2);letter-spacing:.08em;}
.cross-row .c-title{font-size:16.5px;font-weight:600;}
.cross-row .c-desc{color:var(--text-2);font-size:14.5px;}
.cross-row i{margin-left:auto;color:var(--accent);transition:transform .3s var(--ease);}
.cross-row:hover i{transform:translateX(5px);}

/* ---------- CTA 带 ---------- */
.cta-band{background:var(--brand-dark);color:#fff;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:34px;padding:52px 0;flex-wrap:wrap;}
.cta-inner h2{margin:0;font-size:clamp(22px,2.8vw,30px);font-weight:700;letter-spacing:-.015em;}
.cta-inner p{margin:12px 0 0;color:rgba(255,255,255,.72);font-size:15.5px;max-width:52ch;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-dark);color:rgba(255,255,255,.78);padding:64px 0 30px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:44px;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px;}
.footer-brand .logo-mark{background:var(--accent);color:#fff;}
.footer-about{margin:16px 0 0;font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.66);max-width:40ch;}
.footer-col h4{margin:0 0 16px;font-size:14px;font-weight:600;color:#fff;letter-spacing:.05em;}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14.5px;color:rgba(255,255,255,.72);transition:color .25s var(--ease),padding-left .25s var(--ease);}
.footer-col a:hover{color:var(--accent);padding-left:4px;}
.footer-bottom{
  margin-top:46px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.7);border-bottom:1px solid rgba(255,255,255,.28);}
.footer-bottom a:hover{color:var(--accent);border-color:var(--accent);}

/* ---------- 回到顶部 ---------- */
.back-to-top{
  position:fixed;right:22px;bottom:26px;z-index:70;width:44px;height:44px;border-radius:50%;
  display:grid;place-items:center;background:var(--card);border:1px solid var(--border);color:var(--brand);
  opacity:0;visibility:hidden;transform:translateY(10px);cursor:pointer;
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s,border-color .25s,color .25s;
  box-shadow:var(--shadow-1);
}
.back-to-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.back-to-top:hover{border-color:var(--accent);color:var(--accent);}

/* ---------- 移动端底部 Tab ---------- */
.mobile-tab{display:none;}

@media (max-width:1024px){
  .nav-links{display:none;}
  .brand-note{display:none;}
  .nav-wrap{justify-content:space-between;height:66px;}
  .nav-cta{margin-left:auto;}
  .section{padding:64px 0;}
  .check-grid{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}

  .mobile-tab{
    position:fixed;left:0;right:0;bottom:0;z-index:80;display:grid;grid-template-columns:repeat(5,1fr);
    background:rgba(246,244,238,.97);backdrop-filter:blur(12px);
    border-top:1px solid var(--border);
    padding-bottom:env(safe-area-inset-bottom);
  }
  .tab-item{
    position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
    min-height:60px;font-size:11px;color:rgba(16,26,22,.5);letter-spacing:.02em;
    transition:color .25s var(--ease);
  }
  .tab-item i{font-size:16px;}
  .tab-item.active{color:var(--accent);}
  .tab-item.active::before{content:"";position:absolute;top:0;width:22px;height:2px;border-radius:2px;background:var(--accent);}
  .tab-item:active{color:var(--accent-hover);}
  body{padding-bottom:88px;}
  .back-to-top{bottom:82px;right:16px;}
}

@media (max-width:768px){
  .page-hero-inner{padding:40px 0 46px;}
  .hero-metrics{gap:20px 32px;}
  .hero-metric b{font-size:22px;}
  .tl-item{grid-template-columns:36px 1fr;gap:14px;}
  .tl-card{grid-template-columns:1fr;gap:16px;padding:16px;}
  .tl-media{aspect-ratio:16/9;}
  .device-row{grid-template-columns:1fr;gap:8px;padding:18px;}
  .device-row.head{display:none;}
  .cta-inner{padding:44px 0;}
  .filter-hint{display:none;}
}

@media (max-width:520px){
  .container-x{padding:0 16px;}
  .logo{font-size:16px;}
  .logo-mark{width:30px;height:30px;font-size:12px;}
  .nav-cta{padding:8px 12px;font-size:13px;}
  .page-hero-lead{font-size:15.5px;}
  .tl-body h3{font-size:17.5px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .btn{padding:11px 16px;font-size:14.5px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category4 */
:root{
  --ink:#101A16;
  --brand:#0E3B2E;
  --brand-dark:#0A2A21;
  --brand-light:#16513F;
  --accent:#FF5A1F;
  --accent-hover:#E24A12;
  --mint:#5FD3A8;
  --paper:#F6F4EE;
  --card:#FFFFFF;
  --muted:#EDE9E0;
  --border:#DDD6C7;
  --text-2:#6B6A61;
  --radius-card:14px;
  --radius-btn:12px;
  --shadow-1:0 1px 2px rgba(16,26,22,.06);
  --shadow-2:0 12px 30px -14px rgba(16,26,22,.30);
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  background:var(--paper);
  color:var(--ink);
  font-size:16px;
  line-height:1.85;
  text-wrap:pretty;
  font-feature-settings:"kern" 1;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{margin:0;padding:0}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em}
p{margin:0}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.container-x{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(14,59,46,.96);
  backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(246,244,238,.12);
  transition:box-shadow .35s var(--ease),background .35s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 10px 30px -22px rgba(16,26,22,.95);background:rgba(10,42,33,.98)}
.nav-wrap{display:flex;align-items:center;gap:26px;height:74px}
.logo{display:flex;align-items:center;gap:10px;color:#F6F4EE;font-weight:800;font-size:18px;flex:none}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:10px;
  background:var(--accent);color:#fff;
  font-family:"Inter",system-ui,sans-serif;font-weight:800;font-size:15px;letter-spacing:.04em;
}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:6px}
.nav-link{
  position:relative;padding:10px 14px;border-radius:10px;
  color:rgba(246,244,238,.76);font-size:15px;
  transition:color .3s var(--ease),background .3s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;border-radius:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform .32s var(--ease);
}
.nav-link:hover{color:#fff;background:rgba(246,244,238,.08)}
.nav-link.active{color:#fff}
.nav-link.active::after{transform:scaleX(1)}
.brand-note{margin-left:auto;font-size:13px;letter-spacing:.02em;color:rgba(246,244,238,.55);white-space:nowrap}
.nav-cta{flex:none}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);font-weight:600;
  transition:background .3s var(--ease),color .3s var(--ease),border-color .3s var(--ease),transform .3s var(--ease),box-shadow .3s var(--ease);
}
.btn i{transition:transform .3s var(--ease)}
.btn:hover i{transform:translateX(4px)}
.btn-primary{background:var(--accent);color:#fff;padding:12px 22px;font-size:15px;box-shadow:0 12px 26px -16px rgba(255,90,31,.95)}
.btn-primary:hover{background:var(--accent-hover)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{border:1px solid rgba(246,244,238,.45);color:#F6F4EE;padding:12px 22px;font-size:15px}
.btn-ghost:hover{background:rgba(246,244,238,.12);border-color:#F6F4EE}
.btn-ghost:active{transform:translateY(1px)}
.btn-outline{border:1px solid var(--ink);color:var(--ink);padding:12px 22px;font-size:15px}
.btn-outline:hover{background:var(--brand);color:#F6F4EE;border-color:var(--brand)}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:10px}

/* ---------- 页头 ---------- */
.page-hero{position:relative;background:var(--brand-dark);color:#F6F4EE;overflow:hidden}
.page-hero-bg{
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-3.png);
  background-size:cover;background-position:center;opacity:.24;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(10,42,33,.97) 0%,rgba(10,42,33,.84) 52%,rgba(10,42,33,.52) 100%);
}
.page-hero-inner{position:relative;z-index:2;padding:52px 0 48px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;letter-spacing:.02em;color:rgba(246,244,238,.62)}
.crumb a:hover{color:var(--accent)}
.crumb i{font-size:10px;opacity:.7}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;margin-top:22px;
  padding:6px 14px;border-radius:999px;
  border:1px solid rgba(95,211,168,.45);background:rgba(95,211,168,.10);
  font-size:13px;color:var(--mint);letter-spacing:.02em;
}
.hero-tag .dot{width:6px;height:6px;border-radius:50%;background:var(--mint)}
.page-hero h1{
  margin-top:18px;
  font-size:clamp(30px,4.6vw,50px);
  font-weight:800;line-height:1.14;letter-spacing:-.02em;
}
.page-hero .hero-sub{
  margin-top:18px;max-width:60ch;
  font-size:17px;line-height:1.85;color:rgba(246,244,238,.78);
}
.filter-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:28px;padding:13px 16px;
  border:1px solid rgba(246,244,238,.16);border-radius:12px;
  background:rgba(246,244,238,.05);
}
.filter-bar .fl-label{font-size:13px;color:rgba(246,244,238,.55);letter-spacing:.02em;margin-right:2px}
.filter-chip{
  font-size:13px;padding:6px 13px;border-radius:999px;
  border:1px solid rgba(246,244,238,.16);color:rgba(246,244,238,.7);
}
.filter-chip.is-on{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section-alt{background:var(--muted)}
.section-tight{padding:64px 0}
.section-head{max-width:70ch}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--accent);
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--accent);border-radius:2px}
.section-head h2{margin-top:14px;font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.3}
.section-head p{margin-top:14px;font-size:16px;color:var(--text-2);line-height:1.85}
.section-head-row{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px}

/* ---------- 标签云 ---------- */
.tag-cloud{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:34px}
.tag{
  display:inline-flex;align-items:center;gap:8px;
  border-radius:999px;border:1px solid var(--border);background:var(--card);
  color:var(--ink);box-shadow:var(--shadow-1);
  transition:border-color .3s var(--ease),color .3s var(--ease),transform .3s var(--ease),box-shadow .3s var(--ease);
}
.tag:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.tag-sm{font-size:13px;padding:7px 14px}
.tag-md{font-size:15px;padding:10px 18px}
.tag-lg{font-size:17px;padding:13px 24px;font-weight:600}
.tag-count{font-family:"Inter",system-ui,sans-serif;font-variant-numeric:tabular-nums;font-size:12px;color:var(--text-2)}
.tag:hover .tag-count{color:var(--accent)}

/* ---------- 紧凑三列问题卡 ---------- */
.q-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:38px}
.q-card{
  display:flex;align-items:flex-start;gap:14px;
  padding:18px;background:var(--card);
  border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease),transform .3s var(--ease);
}
.q-card:hover{border-color:var(--accent);box-shadow:var(--shadow-2);transform:translateY(-2px)}
.q-num{
  flex:none;font-family:"Inter",system-ui,sans-serif;font-variant-numeric:tabular-nums;
  font-size:13px;font-weight:800;color:var(--accent);padding-top:4px;letter-spacing:.02em;
}
.q-body{flex:1;min-width:0}
.q-title{font-size:17px;font-weight:600;line-height:1.5}
.q-desc{margin-top:6px;font-size:14px;line-height:1.75;color:var(--text-2)}
.q-arrow{flex:none;color:var(--border);font-size:14px;padding-top:5px;transition:color .3s var(--ease),transform .3s var(--ease)}
.q-card:hover .q-arrow{color:var(--accent);transform:translateX(4px)}

/* ---------- 三步自查 ---------- */
.step-row{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  margin-top:38px;border-top:1px solid var(--border);border-bottom:1px solid var(--border);
}
.step{padding:32px 28px;border-right:1px solid var(--border);position:relative}
.step:last-child{border-right:0}
.step-idx{
  font-family:"Inter",system-ui,sans-serif;font-variant-numeric:tabular-nums;
  font-size:38px;font-weight:800;line-height:1;color:var(--muted);
  letter-spacing:-.03em;
}
.step h3{margin-top:16px;font-size:19px;font-weight:700}
.step p{margin-top:10px;font-size:15px;line-height:1.85;color:var(--text-2)}
.step ul{margin-top:14px;display:grid;gap:8px;list-style:none}
.step li{position:relative;padding-left:16px;font-size:14px;color:var(--text-2);line-height:1.75}
.step li::before{
  content:"";position:absolute;left:0;top:.72em;
  width:6px;height:6px;border-radius:1px;background:var(--accent);
}

/* ---------- 统计条 ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  margin-top:36px;background:var(--card);
  border:1px solid var(--border);border-radius:var(--radius-card);overflow:hidden;
}
.stat{padding:26px 24px;border-right:1px solid var(--border)}
.stat:last-child{border-right:0}
.stat-num{
  font-family:"Inter",system-ui,sans-serif;font-variant-numeric:tabular-nums;
  font-size:32px;font-weight:800;letter-spacing:-.02em;line-height:1.1;
}
.stat-num span{font-size:15px;font-weight:600;color:var(--text-2);margin-left:4px}
.stat-label{margin-top:8px;font-size:14px;color:var(--text-2)}
.stat-note{margin-top:22px;font-size:13px;color:var(--text-2);letter-spacing:.02em}

/* ---------- FAQ ---------- */
.faq-list{margin-top:30px;border-top:1px solid var(--border)}
.faq-item{border-bottom:1px solid var(--border)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 0;font-size:18px;font-weight:600;line-height:1.6;
  cursor:pointer;list-style:none;
  transition:color .3s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:none;font-family:"Inter",system-ui,sans-serif;
  font-size:24px;line-height:1;color:var(--accent);
  transition:transform .32s var(--ease);
}
.faq-item summary:hover{color:var(--accent)}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-body{padding:0 0 24px;max-width:78ch;font-size:16px;line-height:1.85;color:var(--text-2)}

/* ---------- 相关分类 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:34px}
.rel-card{
  display:block;background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease),transform .3s var(--ease);
}
.rel-card:hover{border-color:var(--accent);box-shadow:var(--shadow-2);transform:translateY(-3px)}
.rel-cover{aspect-ratio:16/9;overflow:hidden;background:var(--muted)}
.rel-cover img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.rel-card:hover .rel-cover img{transform:scale(1.03)}
.rel-body{padding:20px}
.rel-body h3{font-size:18px;font-weight:700}
.rel-body p{margin-top:8px;font-size:14px;line-height:1.75;color:var(--text-2)}
.rel-more{
  display:inline-flex;align-items:center;gap:8px;margin-top:14px;
  font-size:14px;font-weight:600;color:var(--accent);
}
.rel-card:hover .rel-more i{transform:translateX(4px)}
.rel-more i{transition:transform .3s var(--ease)}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--brand-dark);color:#F6F4EE;
  border-radius:18px;padding:44px 40px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;
  border-radius:50%;background:radial-gradient(circle,rgba(255,90,31,.22),transparent 65%);
}
.cta-band h2{position:relative;z-index:2;font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.35}
.cta-band p{position:relative;z-index:2;margin-top:10px;font-size:15px;color:rgba(246,244,238,.72);max-width:52ch}
.cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:12px}
.copy-state{font-size:13px;color:var(--mint);align-self:center;min-width:70px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-dark);color:rgba(246,244,238,.78)}
.footer-grid{
  display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px;
  padding:64px 0 44px;
}
.footer-brand{display:flex;align-items:center;gap:10px;color:#F6F4EE;font-weight:800;font-size:18px}
.footer-about{margin-top:16px;max-width:36ch;font-size:14px;line-height:1.85;color:rgba(246,244,238,.62)}
.footer-col h4{font-size:15px;font-weight:700;color:#F6F4EE}
.footer-col ul{margin-top:16px;display:grid;gap:10px;list-style:none}
.footer-col a{font-size:14px;color:rgba(246,244,238,.68);transition:color .3s var(--ease)}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding:22px 0 34px;border-top:1px solid rgba(246,244,238,.12);
  font-size:13px;color:rgba(246,244,238,.5);letter-spacing:.02em;
}
.footer-bottom a{color:rgba(246,244,238,.75);text-decoration:underline;text-underline-offset:3px}
.footer-bottom a:hover{color:var(--accent)}

/* ---------- 回到顶部 ---------- */
.to-top{
  position:fixed;right:22px;bottom:26px;z-index:70;
  width:44px;height:44px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--card);border:1px solid var(--border);color:var(--ink);
  box-shadow:var(--shadow-1);
  opacity:0;visibility:hidden;
  transition:opacity .35s var(--ease),visibility .35s var(--ease),background .3s var(--ease),color .3s var(--ease),transform .3s var(--ease);
}
.to-top.is-on{opacity:1;visibility:visible}
.to-top:hover{background:var(--accent);color:#fff;border-color:var(--accent);transform:translateY(-3px)}

/* ---------- 移动端底部 Tab ---------- */
.mobile-tabs{display:none}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(8px)}
.reveal.is-in{opacity:1;transform:none;transition:opacity .48s var(--ease),transform .48s var(--ease)}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .q-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .nav-wrap{gap:16px}
  .brand-note{display:none}
}
@media (max-width:767px){
  body{padding-bottom:92px}
  .nav-links,.nav-cta{display:none}
  .nav-wrap{height:64px;justify-content:center;gap:0}
  .site-header .container-x{padding:0 16px}
  .section{padding:60px 0}
  .section-tight{padding:48px 0}
  .page-hero-inner{padding:36px 0 34px}
  .step-row{grid-template-columns:1fr;border-bottom:0}
  .step{border-right:0;border-bottom:1px solid var(--border);padding:26px 4px}
  .stat-strip{grid-template-columns:1fr 1fr}
  .stat{border-right:1px solid var(--border);border-bottom:1px solid var(--border)}
  .stat:nth-child(2n){border-right:0}
  .stat:nth-child(3),.stat:nth-child(4){border-bottom:0}
  .cta-band{padding:32px 22px;border-radius:14px}
  .q-grid{grid-template-columns:1fr}
  .rel-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:48px 0 32px}
  .to-top{bottom:100px;right:16px}
  .mobile-tabs{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:80;
    background:rgba(255,255,255,.98);
    border-top:1px solid var(--border);
    padding-bottom:env(safe-area-inset-bottom);
    backdrop-filter:blur(12px);
  }
  .tab{
    flex:1;position:relative;
    display:flex;flex-direction:column;align-items:center;gap:4px;
    padding:9px 2px 8px;font-size:11px;letter-spacing:.01em;
    color:rgba(16,26,22,.5);
    transition:color .3s var(--ease);
  }
  .tab i{font-size:17px}
  .tab.active{color:var(--accent)}
  .tab.active::before{
    content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
    width:22px;height:2px;border-radius:2px;background:var(--accent);
  }
}
@media (max-width:520px){
  .container-x{padding:0 16px}
  .page-hero h1{font-size:28px}
  .page-hero .hero-sub{font-size:16px}
  .faq-item summary{font-size:16px;padding:18px 0}
  .stat-num{font-size:26px}
  .tag-lg{font-size:15px;padding:11px 18px}
  .tag-md{font-size:14px;padding:9px 15px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}