/* roulang page: index */
:root{
  --ink-900:#0D1311;
  --ink-800:#141B18;
  --ink-600:#2B3733;
  --ink-500:#48564F;
  --ink-300:#8A9A93;
  --lime-500:#C6F24E;
  --lime-600:#A9D93A;
  --lime-100:#EEFBC8;
  --amber-500:#FFB86B;
  --paper-0:#FFFFFF;
  --paper-50:#F7F5F0;
  --paper-100:#EFECE4;
  --line:#E4E1D8;
  --deep-line:rgba(255,255,255,.10);
  --dark-text:#DCE5E0;
  --danger:#D8492E;
  --r-lg:20px;
  --r-md:14px;
  --r-sm:10px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(13,19,17,.05);
  --shadow-2:0 14px 34px rgba(13,19,17,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1200px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper-50);
  color:var(--ink-900);
  font-family:"PingFang SC","HarmonyOS Sans SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),border-color .22s var(--ease),background-color .22s var(--ease);}
button,input,textarea,select{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3{letter-spacing:-0.02em;font-weight:900;}
:focus-visible{outline:2px solid var(--lime-500);outline-offset:2px;border-radius:6px;}
.num{font-family:"Inter","SF Pro Display","DIN Alternate",system-ui,sans-serif;font-variant-numeric:tabular-nums;}

.container{max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-dark{background:var(--ink-900);color:var(--dark-text);}
.section-dark h2,.section-dark h3{color:#fff;}
.section-light{background:var(--paper-50);}
.section-white{background:var(--paper-0);}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:500;letter-spacing:.02em;
  padding:6px 14px;border-radius:var(--r-pill);
  background:var(--lime-100);color:var(--ink-900);
}
.section-dark .eyebrow{background:transparent;border:1px solid rgba(198,242,78,.55);color:var(--lime-500);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:40px;}
.section-head h2{font-size:40px;line-height:1.22;margin-top:14px;position:relative;padding-left:16px;}
.section-head h2::before{content:"";position:absolute;left:0;top:12px;width:3px;height:24px;background:var(--lime-500);border-radius:2px;}
.section-head p{margin-top:12px;font-size:16px;color:var(--ink-500);max-width:640px;}
.section-dark .section-head p{color:var(--ink-300);}
.link-more{
  font-size:14px;font-weight:700;color:var(--ink-900);
  border-bottom:2px solid var(--lime-500);padding-bottom:2px;white-space:nowrap;
  transition:border-color .22s var(--ease),color .22s var(--ease);
}
.link-more:hover{border-bottom-width:3px;color:var(--ink-600);}
.section-dark .link-more{color:#fff;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-sm);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  transition:transform .22s var(--ease),background-color .22s var(--ease),color .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.btn-primary{background:var(--lime-500);color:var(--ink-900);}
.btn-primary:hover{background:var(--lime-600);transform:translateY(-1px);box-shadow:0 10px 24px rgba(198,242,78,.28);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{border:1.5px solid var(--ink-900);color:var(--ink-900);}
.btn-ghost:hover{background:var(--ink-900);color:#fff;}
.section-dark .btn-ghost{border-color:var(--dark-text);color:var(--dark-text);}
.section-dark .btn-ghost:hover{background:var(--dark-text);color:var(--ink-900);}
.btn-lg{height:54px;padding:0 32px;font-size:16px;}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:var(--ink-900);
  border-bottom:1px solid transparent;
  transition:background-color .25s var(--ease),border-color .25s var(--ease);
}
.site-header.is-scrolled{background:rgba(13,19,17,.9);backdrop-filter:blur(12px);border-bottom-color:var(--deep-line);}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px;transition:height .25s var(--ease);}
.site-header.is-scrolled .nav{height:64px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:#fff;}
.logo-mark{width:14px;height:14px;border-radius:4px;background:var(--lime-500);box-shadow:0 0 0 4px rgba(198,242,78,.14);flex:none;}
.logo-text{font-size:17px;font-weight:900;letter-spacing:-0.01em;white-space:nowrap;}
.logo-text em{font-style:normal;color:var(--lime-500);}
.logo-sub{display:block;font-size:11px;font-weight:500;letter-spacing:.16em;color:var(--ink-300);margin-top:-4px;}
.nav-links{display:flex;align-items:center;gap:32px;}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-300);padding:6px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:0;width:0;height:2px;background:var(--lime-500);
  transform:translateX(-50%);transition:width .22s var(--ease);
}
.nav-links a:hover{color:#fff;}
.nav-links a:hover::after{width:20px;}
.nav-links a.is-active{color:#fff;}
.nav-links a.is-active::after{width:20px;}
.nav-cta{margin-left:8px;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--deep-line);border-radius:var(--r-sm);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;transition:transform .22s var(--ease),opacity .22s var(--ease);}
.drawer-mask{position:fixed;inset:0;background:rgba(13,19,17,.55);opacity:0;pointer-events:none;transition:opacity .25s var(--ease);z-index:95;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:320px;max-width:86vw;background:var(--paper-50);
  transform:translateX(100%);transition:transform .3s var(--ease);z-index:96;
  padding:28px 24px;display:flex;flex-direction:column;gap:8px;overflow-y:auto;
}
body.drawer-open .drawer{transform:translateX(0);}
body.drawer-open .drawer-mask{opacity:1;pointer-events:auto;}
.drawer h4{font-size:13px;letter-spacing:.14em;color:var(--ink-300);font-weight:500;margin:12px 0 4px;}
.drawer a.drawer-link{display:block;padding:12px 0;border-bottom:1px solid var(--line);font-size:16px;font-weight:500;}
.drawer a.drawer-link:hover{color:var(--ink-600);}
.drawer .btn{margin-top:20px;width:100%;}
.drawer-info{margin-top:auto;padding-top:24px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-500);line-height:1.8;}

/* ---------- hero ---------- */
.hero{background:var(--ink-900);color:var(--dark-text);padding:72px 0 88px;position:relative;overflow:hidden;}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(198,242,78,.10) 1px,transparent 1px);
  background-size:26px 26px;opacity:.5;pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:repeat(12,1fr);gap:var(--gap);align-items:center;}
.hero-copy{grid-column:span 6;}
.hero-media{grid-column:span 6;}
.hero h1{font-size:56px;line-height:1.15;font-weight:900;color:#fff;margin-top:22px;}
.hero h1 em{font-style:normal;color:var(--lime-500);}
.hero-sub{margin-top:20px;font-size:20px;line-height:1.7;color:var(--ink-300);max-width:520px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:40px;margin-top:44px;padding-top:28px;border-top:1px solid var(--deep-line);}
.hero-stats .stat b{display:block;font-size:32px;font-weight:800;color:#fff;line-height:1.2;}
.hero-stats .stat span{font-size:14px;color:var(--ink-300);}
.hero-figure{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:0 24px 60px rgba(0,0,0,.45);}
.hero-figure img{width:100%;height:460px;object-fit:cover;}
.hero-figure::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(13,19,17,.62) 0%,rgba(13,19,17,.08) 60%,rgba(13,19,17,0) 100%);}
.hero-figure figcaption{
  position:absolute;left:20px;bottom:18px;z-index:2;color:#fff;font-size:13px;
  background:rgba(13,19,17,.6);border:1px solid var(--deep-line);border-radius:var(--r-pill);padding:6px 14px;
}

/* ---------- quick list ---------- */
.quick-list{border-top:1px solid var(--line);}
.quick-item{
  display:grid;grid-template-columns:64px 1fr 40px;align-items:center;gap:20px;
  padding:26px 16px;border-bottom:1px solid var(--line);
  transition:background-color .22s var(--ease),padding-left .22s var(--ease);
}
.quick-item:hover{background-color:var(--paper-100);padding-left:24px;}
.quick-num{font-size:22px;font-weight:800;color:var(--ink-600);line-height:1;}
.quick-item h3{font-size:20px;line-height:1.4;}
.quick-item p{margin-top:6px;font-size:15px;color:var(--ink-500);line-height:1.7;}
.quick-arrow{font-size:20px;color:var(--ink-500);transition:transform .22s var(--ease),color .22s var(--ease);text-align:right;}
.quick-item:hover .quick-arrow{transform:translateX(4px);color:var(--ink-900);}

/* ---------- compare table ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--deep-line);border-radius:var(--r-lg);background:var(--ink-800);max-width:1320px;}
table.compare{width:100%;border-collapse:collapse;min-width:760px;}
table.compare th,table.compare td{padding:0 20px;height:56px;text-align:left;font-size:15px;border-bottom:1px solid var(--deep-line);}
table.compare thead th{
  font-size:13px;letter-spacing:.08em;font-weight:500;color:var(--ink-300);background:rgba(255,255,255,.03);
}
table.compare thead th.col-rec{color:var(--lime-500);position:relative;border-top:3px solid var(--lime-500);}
table.compare thead th.col-rec .rec-badge{
  display:inline-block;margin-left:8px;font-size:11px;padding:2px 8px;border-radius:var(--r-pill);
  background:var(--lime-500);color:var(--ink-900);letter-spacing:0;font-weight:700;
}
table.compare tbody tr:hover td{background:rgba(198,242,78,.10);}
table.compare tbody tr:hover td.col-rec{background:rgba(198,242,78,.14);}
table.compare tbody td:first-child{color:#fff;font-weight:500;}
table.compare td .yes{color:var(--lime-500);font-weight:700;}
table.compare td .no{color:var(--ink-300);}
.compare-mobile{display:none;}
.plan-card-mobile{border:1px solid var(--deep-line);border-radius:var(--r-md);padding:24px;background:var(--ink-800);margin-bottom:16px;}
.plan-card-mobile h3{font-size:20px;margin-bottom:6px;}
.plan-card-mobile ul li{font-size:14px;color:var(--ink-300);padding:8px 0;border-bottom:1px dashed var(--deep-line);}
.plan-card-mobile ul li:last-child{border-bottom:0;}

/* ---------- tiers ---------- */
.tiers{display:grid;grid-template-columns:5fr 4fr 3fr;gap:var(--gap);align-items:start;}
.tier{
  background:var(--paper-0);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px;box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.tier:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--ink-600);}
.tier:nth-child(2){margin-top:32px;}
.tier:nth-child(3){margin-top:64px;background:var(--ink-900);border-color:var(--ink-900);color:var(--dark-text);}
.tier:nth-child(3) h3,.tier:nth-child(3) .price b{color:#fff;}
.tier:nth-child(3) .tier-desc{color:var(--ink-300);}
.tier-badge{display:inline-block;font-size:12px;font-weight:500;letter-spacing:.02em;padding:5px 12px;border-radius:var(--r-pill);background:var(--paper-100);color:var(--ink-900);}
.tier:nth-child(2) .tier-badge{background:var(--ink-900);color:#fff;}
.tier:nth-child(3) .tier-badge{background:var(--lime-500);color:var(--ink-900);}
.tier h3{font-size:24px;margin-top:16px;}
.tier-desc{margin-top:8px;font-size:14px;color:var(--ink-500);line-height:1.8;}
.price{margin-top:18px;display:flex;align-items:baseline;gap:6px;}
.price b{font-size:40px;font-weight:800;line-height:1;}
.price span{font-size:13px;color:var(--ink-300);}
.tier ul{margin-top:18px;}
.tier ul li{position:relative;padding-left:18px;font-size:15px;line-height:1.8;color:inherit;margin-bottom:8px;}
.tier ul li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:2px;background:var(--lime-500);}
.tier .btn{margin-top:22px;width:100%;}
.tier:nth-child(3) .btn-ghost{border-color:var(--lime-500);color:var(--lime-500);}
.tier:nth-child(3) .btn-ghost:hover{background:var(--lime-500);color:var(--ink-900);}

/* ---------- track ---------- */
.track-head{display:flex;align-items:center;gap:12px;}
.track-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--deep-line);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:16px;
  transition:border-color .22s var(--ease),background-color .22s var(--ease),color .22s var(--ease);
}
.track-btn:hover{border-color:rgba(198,242,78,.55);background:rgba(198,242,78,.10);color:var(--lime-500);}
.track-wrap{position:relative;margin-top:8px;}
.track-wrap::before,.track-wrap::after{
  content:"";position:absolute;top:0;bottom:12px;width:24px;z-index:2;pointer-events:none;
}
.track-wrap::before{left:-24px;background:linear-gradient(90deg,var(--ink-900),rgba(13,19,17,0));}
.track-wrap::after{right:-24px;background:linear-gradient(270deg,var(--ink-900),rgba(13,19,17,0));}
.track{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 4px 16px;scrollbar-width:thin;}
.track::-webkit-scrollbar{height:6px;}
.track::-webkit-scrollbar-thumb{background:var(--ink-600);border-radius:3px;}
.track-card{
  flex:0 0 300px;scroll-snap-align:start;
  background:var(--ink-800);border:1px solid var(--deep-line);border-radius:var(--r-md);overflow:hidden;
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.track-card:hover{transform:translateY(-3px);border-color:rgba(198,242,78,.35);}
.track-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;}
.track-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.track-card:hover .track-thumb img{transform:scale(1.03);}
.lock{
  position:absolute;right:12px;top:12px;width:28px;height:28px;border-radius:50%;
  border:1px solid var(--lime-500);background:rgba(13,19,17,.7);color:var(--lime-500);
  display:flex;align-items:center;justify-content:center;font-size:12px;
}
.track-body{padding:20px;}
.track-body h3{font-size:17px;line-height:1.5;color:#fff;}
.track-body p{margin-top:8px;font-size:14px;color:var(--ink-300);line-height:1.75;}
.track-body .track-meta{margin-top:14px;font-size:12px;color:var(--ink-300);}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.news-card{
  background:var(--paper-0);border:1px solid var(--line);border-radius:var(--r-md);padding:24px;
  box-shadow:var(--shadow-1);display:flex;flex-direction:column;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--ink-600);}
.news-card--lead{grid-column:span 2;flex-direction:row;gap:24px;padding:0;overflow:hidden;}
.news-card--lead .news-figure{flex:0 0 46%;overflow:hidden;}
.news-card--lead .news-figure img{width:100%;height:100%;min-height:250px;object-fit:cover;transition:transform .3s var(--ease);}
.news-card--lead:hover .news-figure img{transform:scale(1.03);}
.news-card--lead .news-body{padding:28px 28px 28px 0;display:flex;flex-direction:column;}
.news-title{font-size:18px;font-weight:700;line-height:1.5;margin-top:12px;}
.news-card--lead .news-title{font-size:24px;}
.news-card:hover .news-title{color:var(--ink-600);}
.news-summary{margin-top:10px;font-size:15px;color:var(--ink-500);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-foot{margin-top:auto;padding-top:18px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--ink-500);}
.tag{display:inline-block;font-size:12px;font-weight:500;letter-spacing:.02em;padding:4px 10px;border-radius:var(--r-pill);background:var(--lime-100);color:var(--ink-900);}
.news-foot .arrow{transition:transform .22s var(--ease);}
.news-card:hover .news-foot .arrow{transform:translateX(4px);}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--r-md);background:var(--paper-0);
  padding:56px 24px;text-align:center;
}
.empty-state .empty-icon{font-size:40px;line-height:1;color:var(--ink-300);}
.empty-state p{margin-top:14px;font-size:15px;color:var(--ink-500);}
.empty-state .btn{margin-top:20px;}

/* ---------- faq ---------- */
.faq-list{max-width:820px;margin:0 auto;}
.faq-item{border:1px solid var(--line);border-radius:var(--r-md);background:var(--paper-0);margin-bottom:12px;overflow:hidden;transition:border-color .22s var(--ease);}
.faq-item.is-open{border-color:var(--ink-900);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:18px;font-weight:700;text-align:left;color:var(--ink-900);
}
.faq-q .plus{
  flex:none;width:24px;height:24px;position:relative;transition:transform .26s var(--ease);
}
.faq-q .plus::before,.faq-q .plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink-900);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-q .plus::before{width:14px;height:2px;}
.faq-q .plus::after{width:2px;height:14px;}
.faq-item.is-open .faq-q .plus{transform:rotate(45deg);}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .26s var(--ease);}
.faq-item.is-open .faq-a{grid-template-rows:1fr;}
.faq-a-inner{overflow:hidden;}
.faq-a p{padding:0 24px 22px;font-size:15.5px;line-height:1.85;color:var(--ink-500);}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--ink-900);border-radius:var(--r-lg);
  padding:56px;border:1px solid var(--deep-line);
}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.35;
  background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.06) 0 1px,transparent 1px 12px);
  pointer-events:none;
}
.cta-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center;}
.cta-grid h2{font-size:40px;line-height:1.22;color:#fff;}
.cta-grid p{margin-top:16px;font-size:16px;color:var(--ink-300);line-height:1.85;max-width:520px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.steps{display:flex;gap:20px;margin-top:28px;flex-wrap:wrap;}
.step{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--dark-text);}
.step i{
  flex:none;width:28px;height:28px;border-radius:50%;border:1px solid var(--lime-500);color:var(--lime-500);
  display:inline-flex;align-items:center;justify-content:center;font-style:normal;font-size:12px;font-weight:700;
}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);color:var(--dark-text);border-top:1px solid var(--deep-line);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.footer-col h4{font-size:13px;letter-spacing:.14em;font-weight:500;color:var(--ink-300);margin-bottom:18px;}
.footer-col ul li{margin-bottom:12px;}
.footer-col ul li a{font-size:14px;color:var(--dark-text);}
.footer-col ul li a:hover{color:var(--lime-500);text-decoration:underline;text-underline-offset:4px;}
.footer-about p{margin-top:16px;font-size:14px;color:var(--ink-300);line-height:1.9;max-width:340px;}
.footer-bottom{
  margin-top:56px;padding:22px 0;border-top:1px solid var(--deep-line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-300);
}
.footer-bottom a{color:var(--ink-300);}
.footer-bottom a:hover{color:var(--lime-500);}

/* ---------- motion ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-in{opacity:1;transform:translateY(0);}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .hero h1{font-size:48px;}
  .section-head h2{font-size:34px;}
  .cta-grid h2{font-size:34px;}
}
@media (max-width:1023px){
  .nav-links,.nav-cta{display:none;}
  .nav-toggle{display:flex;}
  .section{padding:72px 0;}
  .hero{padding:56px 0 64px;}
  .hero-copy,.hero-media{grid-column:span 12;}
  .hero h1{font-size:40px;}
  .hero-sub{font-size:18px;}
  .hero-figure img{height:340px;}
  .tiers{grid-template-columns:1fr;gap:20px;}
  .tier:nth-child(2),.tier:nth-child(3){margin-top:0;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .news-card--lead{grid-column:span 2;flex-direction:column;}
  .news-card--lead .news-figure{flex:none;}
  .news-card--lead .news-body{padding:0 24px 24px;}
  .cta-band{padding:40px;}
  .cta-grid{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:28px;}
  .section-head h2{font-size:26px;}
  .section-head h2::before{top:8px;height:20px;}
  .hero h1{font-size:32px;}
  .hero-sub{font-size:16.5px;margin-top:16px;}
  .hero-stats{gap:24px;margin-top:32px;}
  .hero-stats .stat b{font-size:26px;}
  .hero-figure img{height:220px;aspect-ratio:16/10;}
  .quick-item{grid-template-columns:44px 1fr 24px;gap:14px;padding:20px 8px;}
  .quick-item h3{font-size:17px;}
  .quick-item p{font-size:14px;}
  .table-wrap{display:none;}
  .compare-mobile{display:block;}
  .tier{padding:20px;}
  .track-card{flex:0 0 88%;}
  .track-wrap::before,.track-wrap::after{display:none;}
  .news-grid{grid-template-columns:1fr;}
  .news-card--lead{grid-column:span 1;}
  .news-card{padding:20px;}
  .faq-q{font-size:16px;padding:18px 20px;}
  .faq-a p{padding:0 20px 18px;}
  .cta-band{padding:28px 22px;}
  .cta-grid h2{font-size:26px;}
  .steps{flex-direction:column;gap:12px;}
  .site-footer{padding-top:48px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:420px){
  .hero-actions .btn,.cta-actions .btn{width:100%;}
  .hero h1{font-size:28px;}
  .tag,.tier-badge{white-space:normal;}
}

/* roulang page: article */
:root{
  --ink-900:#0D1311;
  --ink-800:#141B18;
  --ink-600:#2B3733;
  --ink-500:#48564F;
  --ink-300:#8A9A93;
  --lime-500:#C6F24E;
  --lime-600:#A9D93A;
  --lime-100:#EEFBC8;
  --amber-500:#FFB86B;
  --paper-0:#FFFFFF;
  --paper-50:#F7F5F0;
  --paper-100:#EFECE4;
  --line:#E4E1D8;
  --deep-line:rgba(255,255,255,.10);
  --dark-text:#DCE5E0;
  --danger:#D8492E;
  --r-lg:20px;
  --r-md:14px;
  --r-sm:10px;
  --sh-1:0 1px 2px rgba(13,19,17,.05);
  --sh-2:0 14px 34px rgba(13,19,17,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:"Inter","SF Pro Display","DIN Alternate",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font-cn);font-size:16px;line-height:1.9;color:var(--ink-500);background:var(--paper-50);-webkit-font-smoothing:antialiased}
body.nav-open{overflow:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink-900);letter-spacing:-.02em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--lime-500);outline-offset:2px;border-radius:6px}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ============ 顶部导航 ============ */
.site-header{position:sticky;top:0;z-index:70;background:var(--ink-900);border-bottom:1px solid var(--deep-line);transition:padding .26s var(--ease),background .26s var(--ease)}
.site-header.is-scrolled{background:rgba(13,19,17,.86);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.nav{display:flex;align-items:center;gap:32px;height:76px;transition:height .26s var(--ease)}
.site-header.is-scrolled .nav{height:64px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{position:relative;width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--lime-500),var(--lime-600));flex:0 0 auto}
.logo-mark::after{content:"";position:absolute;inset:9px;border-radius:3px;background:var(--ink-900)}
.logo-text{display:block;font-size:17px;font-weight:800;line-height:1.2;color:#fff;letter-spacing:-.01em}
.logo-text em{font-style:normal;color:var(--lime-500)}
.logo-sub{display:block;font-size:11px;letter-spacing:.14em;color:var(--ink-300);margin-top:3px}
.nav-links{display:flex;align-items:center;gap:32px;margin-left:auto}
.nav-links a{position:relative;display:inline-block;padding:6px 0;font-size:15px;font-weight:500;color:#B9C6C0;transition:color .2s var(--ease)}
.nav-links a::after{content:"";position:absolute;left:50%;bottom:0;width:20px;height:2px;border-radius:2px;background:var(--lime-500);transform:translateX(-50%) scaleX(0);transition:transform .24s var(--ease)}
.nav-links a:hover{color:#fff}
.nav-links a:hover::after,.nav-links a.is-active::after{transform:translateX(-50%) scaleX(1)}
.nav-links a.is-active{color:#fff}
.nav-cta{margin-left:8px;height:44px;padding:0 22px;display:inline-flex;align-items:center;border-radius:var(--r-sm);font-size:15px;font-weight:700;background:var(--lime-500);color:var(--ink-900);transition:background .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease)}
.nav-cta:hover{background:var(--lime-600);transform:translateY(-1px);box-shadow:0 10px 24px rgba(198,242,78,.28)}
.nav-toggle{display:none;width:44px;height:44px;flex-direction:column;align-items:center;justify-content:center;gap:5px;background:transparent;border:1px solid var(--deep-line);border-radius:var(--r-sm);cursor:pointer;margin-left:auto}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#fff;transition:transform .24s var(--ease),opacity .24s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============ 文章头部 ============ */
.article-hero{position:relative;background:var(--ink-900);color:#fff;overflow:hidden;padding:56px 0 64px}
.article-hero::before{content:"";position:absolute;inset:0;background-image:url("/assets/images/backpic/back-1.webp");background-size:cover;background-position:center;opacity:.22}
.article-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(13,19,17,.94),rgba(13,19,17,.62))}
.article-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-300);margin-bottom:26px}
.breadcrumb a{color:var(--ink-300);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--lime-500)}
.breadcrumb .sep{color:var(--ink-500)}
.breadcrumb .current{color:var(--dark-text);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-hero h1{font-size:48px;font-weight:900;line-height:1.25;color:#fff;max-width:900px;letter-spacing:-.02em}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:26px;font-size:13px;color:var(--ink-300)}
.article-meta .dot{color:var(--ink-500)}
.article-meta .chip{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;border:1px solid rgba(198,242,78,.45);color:var(--lime-500);font-size:12px;font-weight:500;letter-spacing:.02em}

/* ============ 正文布局 ============ */
.page-main{padding:56px 0 24px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start}
.article-cover{border-radius:var(--r-lg);overflow:hidden;margin-bottom:40px;box-shadow:var(--sh-1);border:1px solid var(--line);background:var(--paper-100)}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-body{max-width:740px;font-size:16px;line-height:1.9;color:var(--ink-500);word-wrap:break-word}
.article-body p{margin:0 0 1.15em}
.article-body h2{position:relative;font-size:26px;font-weight:800;line-height:1.35;color:var(--ink-900);margin:44px 0 16px;padding-left:16px}
.article-body h2::before{content:"";position:absolute;left:0;top:9px;width:3px;height:20px;border-radius:2px;background:var(--lime-500)}
.article-body h3{font-size:20px;font-weight:700;line-height:1.4;color:var(--ink-900);margin:30px 0 12px}
.article-body h4{font-size:17px;font-weight:700;color:var(--ink-900);margin:22px 0 10px}
.article-body strong{color:var(--ink-900);font-weight:700}
.article-body a{color:var(--ink-900);text-decoration:underline;text-decoration-color:var(--lime-500);text-underline-offset:4px;transition:text-decoration-thickness .18s var(--ease)}
.article-body a:hover{text-decoration-thickness:2px}
.article-body img{border-radius:12px;margin:24px auto;max-width:100%;height:auto}
.article-body blockquote{margin:26px 0;padding:20px 22px;background:var(--paper-100);border-left:3px solid var(--lime-500);border-radius:0 12px 12px 0;color:var(--ink-600)}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body ul,.article-body ol{margin:0 0 1.15em;padding-left:0}
.article-body ul li{position:relative;padding-left:18px;margin-bottom:.55em;list-style:none}
.article-body ul li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:2px;background:var(--lime-500)}
.article-body ol{counter-reset:li;padding-left:0}
.article-body ol li{position:relative;padding-left:30px;margin-bottom:.55em;list-style:none;counter-increment:li}
.article-body ol li::before{content:counter(li);position:absolute;left:0;top:.32em;width:20px;height:20px;border-radius:6px;background:var(--lime-100);color:var(--ink-900);font-size:12px;font-weight:700;line-height:20px;text-align:center;font-family:var(--font-num)}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;font-variant-numeric:tabular-nums}
.article-body th,.article-body td{border:1px solid var(--line);padding:12px 14px;text-align:left}
.article-body th{background:var(--paper-100);color:var(--ink-900);font-weight:700}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}

/* ============ 侧栏 ============ */
.article-side{position:sticky;top:100px;display:flex;flex-direction:column;gap:20px}
.side-card{background:var(--paper-0);border:1px solid var(--line);border-radius:var(--r-md);padding:22px;box-shadow:var(--sh-1)}
.side-title{font-size:15px;font-weight:800;color:var(--ink-900);margin-bottom:16px;display:flex;align-items:center;gap:8px}
.side-title::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--lime-500)}
.side-list li+li{border-top:1px solid var(--line);margin-top:14px;padding-top:14px}
.side-list a{display:block;font-size:14.5px;font-weight:600;line-height:1.6;color:var(--ink-900);transition:color .2s var(--ease)}
.side-list a:hover{color:var(--lime-600)}
.side-list span{display:block;margin-top:6px;font-size:12.5px;font-weight:400;color:var(--ink-300)}
.side-card-dark{background:var(--ink-900);border-color:var(--deep-line);color:var(--dark-text)}
.side-card-dark .side-title{color:#fff}
.side-card-dark p{font-size:14px;line-height:1.8;color:var(--ink-300);margin-bottom:18px}

/* ============ 标签 / 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 28px;border-radius:var(--r-sm);font-size:15px;font-weight:700;cursor:pointer;border:1.5px solid transparent;transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease)}
.btn-primary{background:var(--lime-500);color:var(--ink-900)}
.btn-primary:hover{background:var(--lime-600);transform:translateY(-1px);box-shadow:0 10px 24px rgba(198,242,78,.28)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;color:var(--ink-900);border-color:var(--ink-900)}
.btn-ghost:hover{background:var(--ink-900);color:#fff}
.btn-block{width:100%}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}
.tag{display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:999px;background:var(--lime-100);color:var(--ink-900);font-size:12px;font-weight:500;letter-spacing:.02em}

/* ============ 文章尾部 ============ */
.post-foot{margin-top:48px;max-width:740px}
.post-tags{display:flex;flex-wrap:wrap;gap:10px;padding-top:28px;border-top:1px solid var(--line)}
.post-cta{margin-top:8px}
.cta-bar{margin-top:64px;background:var(--ink-900);border-radius:var(--r-lg);padding:40px;display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;border:1px solid var(--deep-line);position:relative;overflow:hidden}
.cta-bar::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(198,242,78,.16) 1px,transparent 1px);background-size:18px 18px;opacity:.5;pointer-events:none}
.cta-bar > *{position:relative;z-index:1}
.cta-bar h2{font-size:28px;font-weight:900;color:#fff;line-height:1.3}
.cta-bar p{margin-top:10px;font-size:15px;color:var(--ink-300);max-width:620px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 相关内容 ============ */
.related{padding:72px 0 24px}
.section-head{margin-bottom:32px}
.section-head h2{position:relative;font-size:30px;font-weight:800;line-height:1.3;padding-left:16px}
.section-head h2::before{content:"";position:absolute;left:0;top:8px;width:3px;height:22px;border-radius:2px;background:var(--lime-500)}
.section-head p{margin-top:10px;font-size:15px;color:var(--ink-500)}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{display:flex;flex-direction:column;background:var(--paper-0);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease)}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#D5D1C4}
.card-thumb{overflow:hidden;background:var(--paper-100)}
.card-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .3s var(--ease)}
.card:hover .card-thumb img{transform:scale(1.03)}
.card-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:18px;font-weight:700;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{font-size:15px;line-height:1.75;color:var(--ink-500);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:8px}
.card-foot time{font-size:13px;color:var(--ink-300);font-variant-numeric:tabular-nums}
.card-foot .arrow{font-size:13px;font-weight:700;color:var(--ink-900);transition:transform .22s var(--ease)}
.card:hover .card-foot .arrow{transform:translateX(4px)}

/* ============ 空状态 ============ */
.empty-state{max-width:560px;margin:0 auto;padding:64px 32px;text-align:center;background:var(--paper-0);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1)}
.empty-state svg{width:48px;height:48px;color:var(--ink-300);margin:0 auto 20px}
.empty-state h2{font-size:24px;font-weight:800;margin-bottom:12px}
.empty-state p{font-size:15px;color:var(--ink-500);margin-bottom:26px}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);border-top:1px solid var(--deep-line);margin-top:96px;padding:72px 0 0;color:var(--dark-text)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-about p{margin-top:18px;font-size:14px;line-height:1.9;color:var(--ink-300);max-width:340px}
.footer-col h4{font-size:13px;font-weight:500;letter-spacing:.1em;color:var(--ink-300);margin-bottom:18px}
.footer-col ul li+li{margin-top:12px}
.footer-col a{font-size:14px;color:var(--dark-text);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--lime-500);text-decoration:underline;text-underline-offset:4px}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;padding:22px 0;border-top:1px solid var(--deep-line);font-size:13px;color:var(--ink-300)}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .nav-links{position:fixed;top:0;right:0;height:100vh;width:320px;max-width:88vw;background:var(--paper-50);flex-direction:column;align-items:stretch;gap:0;margin:0;padding:96px 28px 32px;transform:translateX(102%);transition:transform .3s var(--ease);z-index:80;box-shadow:-18px 0 50px rgba(13,19,17,.35);overflow-y:auto}
  .nav-links.is-open{transform:translateX(0)}
  .nav-links a{color:var(--ink-900);font-size:17px;font-weight:600;padding:16px 0;border-bottom:1px solid var(--line)}
  .nav-links a::after{left:0;transform:scaleX(0);width:20px}
  .nav-links a:hover{color:var(--ink-900)}
  .nav-links a:hover::after,.nav-links a.is-active::after{transform:scaleX(1);left:0;translate:0}
  .nav-toggle{display:flex}
  .nav-cta{display:none}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:40px}
  .article-side{position:static}
  .article-hero h1{font-size:36px}
  .article-hero{padding:44px 0 48px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-bar{grid-template-columns:1fr;padding:32px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .page-main{padding:40px 0 16px}
  .article-hero h1{font-size:28px}
  .breadcrumb .current{max-width:180px}
  .article-body{font-size:15.5px}
  .article-body h2{font-size:22px;margin-top:36px}
  .article-body h3{font-size:18px}
  .card-grid{grid-template-columns:minmax(0,1fr);gap:18px}
  .cta-bar{margin-top:44px;border-radius:var(--r-md)}
  .cta-bar h2{font-size:23px}
  .cta-actions .btn{width:100%}
  .related{padding:52px 0 16px}
  .section-head h2{font-size:24px}
  .site-footer{margin-top:64px;padding-top:52px}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;padding-bottom:36px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:420px){
  .article-hero h1{font-size:24px}
  .btn{width:100%}
  .article-meta{gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
  .card:hover{transform:none}
}

/* roulang page: category1 */
:root{
  --ink-900:#0D1311;
  --ink-800:#141B18;
  --ink-600:#2B3733;
  --ink-500:#48564F;
  --ink-300:#8A9A93;
  --lime-500:#C6F24E;
  --lime-600:#A9D93A;
  --lime-100:#EEFBC8;
  --amber-500:#FFB86B;
  --paper-0:#FFFFFF;
  --paper-50:#F7F5F0;
  --paper-100:#EFECE4;
  --line:#E4E1D8;
  --deep-line:rgba(255,255,255,.10);
  --text-on-dark:#DCE5E0;
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:10px;
  --shadow-card:0 1px 2px rgba(13,19,17,.05);
  --shadow-hover:0 14px 34px rgba(13,19,17,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:"Inter","SF Pro Display","DIN Alternate",-apple-system,system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.9;
  color:var(--ink-900);
  background:var(--paper-50);
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;border-radius:var(--radius-md);}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit;}
input,textarea{font-family:inherit;font-size:15px;color:var(--ink-900);}
:focus-visible{outline:2px solid var(--lime-500);outline-offset:2px;border-radius:4px;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.section{padding:96px 0;}
.section-light{background:var(--paper-50);}
.section-dark{background:var(--ink-900);color:var(--text-on-dark);}
.section-dark .section-title,
.section-dark h2,
.section-dark h3{color:#fff;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
}
.section-title{
  position:relative;
  font-size:40px;
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1.22;
  padding-left:18px;
}
.section-title::before{
  content:"";
  position:absolute;
  left:0;
  top:.22em;
  width:3px;
  height:12px;
  background:var(--lime-500);
  border-radius:2px;
}
.section-lead{
  max-width:720px;
  margin-top:16px;
  font-size:16px;
  color:var(--ink-500);
}
.section-dark .section-lead{color:var(--ink-300);}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  font-weight:500;
  letter-spacing:.02em;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 14px;
  border-radius:999px;
  font-size:12px;
  font-weight:500;
  letter-spacing:.02em;
  background:var(--lime-100);
  color:var(--ink-900);
}
.badge-outline{
  background:transparent;
  border:1px solid rgba(198,242,78,.55);
  color:var(--lime-500);
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 28px;
  border-radius:var(--radius-sm);
  font-size:15px;
  font-weight:700;
  transition:transform .22s var(--ease),background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:var(--lime-500);
  color:var(--ink-900);
}
.btn-primary:hover{
  background:var(--lime-600);
  transform:translateY(-1px);
  box-shadow:0 10px 24px rgba(198,242,78,.28);
}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{
  background:transparent;
  border:1.5px solid var(--ink-900);
  color:var(--ink-900);
}
.btn-ghost:hover{background:var(--ink-900);color:#fff;}
.section-dark .btn-ghost{
  border-color:var(--text-on-dark);
  color:var(--text-on-dark);
}
.section-dark .btn-ghost:hover{background:var(--text-on-dark);color:var(--ink-900);}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:700;
  color:var(--ink-900);
  border-bottom:2px solid var(--lime-500);
  padding-bottom:2px;
  transition:border-color .22s var(--ease);
}
.btn-text:hover{border-bottom-color:var(--ink-900);}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.4;cursor:not-allowed;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(247,245,240,.92);
  border-bottom:1px solid var(--line);
  transition:background-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(247,245,240,.78);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:0 1px 0 var(--line),0 10px 30px rgba(13,19,17,.05);
}
.nav{
  display:flex;
  align-items:center;
  gap:32px;
  min-height:76px;
  transition:min-height .25s var(--ease);
}
.site-header.is-scrolled .nav{min-height:64px;}
.logo{
  display:inline-flex;
  align-items:center;
  gap:12px;
  margin-right:auto;
}
.logo-mark{
  width:30px;
  height:30px;
  border-radius:9px;
  background:linear-gradient(135deg,var(--lime-500),var(--lime-600));
  position:relative;
  flex:none;
  box-shadow:0 4px 12px rgba(198,242,78,.35);
}
.logo-mark::after{
  content:"";
  position:absolute;
  inset:9px;
  border-radius:3px;
  background:var(--ink-900);
}
.logo-text{
  display:block;
  font-size:17px;
  font-weight:900;
  letter-spacing:-.01em;
  color:var(--ink-900);
  line-height:1.2;
}
.logo-text em{font-style:normal;color:var(--lime-600);}
.logo-sub{
  display:block;
  font-size:11px;
  letter-spacing:.08em;
  color:var(--ink-300);
  line-height:1.4;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:32px;
}
.nav-links a{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--ink-500);
  padding:6px 0;
  transition:color .22s var(--ease);
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:0;
  width:20px;
  height:2px;
  background:var(--lime-500);
  transform:translateX(-50%) scaleX(0);
  transform-origin:center;
  transition:transform .22s var(--ease);
  border-radius:2px;
}
.nav-links a:hover{color:var(--ink-900);}
.nav-links a:hover::after{transform:translateX(-50%) scaleX(1);}
.nav-links a.is-active{color:var(--ink-900);font-weight:700;}
.nav-links a.is-active::after{transform:translateX(-50%) scaleX(1);}
.nav-cta{margin-left:8px;}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  border-radius:var(--radius-sm);
  border:1px solid var(--line);
}
.nav-toggle span{
  display:block;
  width:18px;
  height:2px;
  background:var(--ink-900);
  border-radius:2px;
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- Breadcrumb ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--ink-300);
}
.breadcrumb a{color:var(--ink-300);transition:color .2s var(--ease);}
.breadcrumb a:hover{color:var(--lime-500);}
.breadcrumb .sep{opacity:.6;}
.breadcrumb .current{color:var(--text-on-dark);}

/* ---------- Category hero ---------- */
.cat-hero{
  position:relative;
  overflow:hidden;
  background:var(--ink-900);
  color:var(--text-on-dark);
  padding:76px 0 84px;
}
.cat-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center 30%;
  opacity:.20;
  filter:saturate(.7);
}
.cat-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(100deg,rgba(13,19,17,.96) 0%,rgba(13,19,17,.80) 46%,rgba(13,19,17,.52) 100%);
}
.cat-hero .container{position:relative;z-index:2;}
.cat-hero h1{
  margin:22px 0 20px;
  font-size:56px;
  font-weight:900;
  line-height:1.15;
  letter-spacing:-.02em;
  color:#fff;
  max-width:18em;
}
.cat-hero .hero-sub{
  max-width:660px;
  font-size:19px;
  line-height:1.75;
  color:var(--ink-300);
}
.hero-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:28px;
}
.hero-tags .tag{
  padding:7px 14px;
  border-radius:999px;
  border:1px solid var(--deep-line);
  font-size:13px;
  color:var(--text-on-dark);
  background:rgba(255,255,255,.03);
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:36px;
  margin-top:44px;
  padding-top:28px;
  border-top:1px solid var(--deep-line);
}
.hero-meta .item strong{
  display:block;
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:32px;
  font-weight:800;
  color:var(--lime-500);
  line-height:1.2;
}
.hero-meta .item span{
  font-size:14px;
  color:var(--ink-300);
}

/* ---------- Guide layout ---------- */
.guide-layout{
  display:grid;
  grid-template-columns:280px minmax(0,1fr);
  gap:56px;
  align-items:start;
}
.side-toc{
  position:sticky;
  top:104px;
  padding:24px 20px;
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  background:var(--paper-0);
  box-shadow:var(--shadow-card);
}
.side-toc h3{
  font-size:13px;
  font-weight:500;
  letter-spacing:.08em;
  color:var(--ink-300);
  margin-bottom:16px;
}
.side-toc ol{counter-reset:toc;}
.side-toc li{counter-increment:toc;}
.side-toc a{
  display:flex;
  gap:10px;
  align-items:baseline;
  padding:9px 10px;
  border-left:2px solid transparent;
  border-radius:0 8px 8px 0;
  font-size:14px;
  color:var(--ink-500);
  transition:color .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease);
}
.side-toc a::before{
  content:counter(toc,decimal-leading-zero);
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:12px;
  color:var(--ink-300);
}
.side-toc a:hover{background:var(--paper-50);color:var(--ink-900);}
.side-toc a.is-current{
  color:var(--ink-900);
  font-weight:700;
  background:var(--paper-50);
  border-left-color:var(--lime-500);
}
.side-toc a.is-current::before{color:var(--lime-600);}
.toc-note{
  margin-top:18px;
  padding-top:16px;
  border-top:1px dashed var(--line);
  font-size:13px;
  color:var(--ink-500);
  line-height:1.7;
}

/* ---------- Timeline ---------- */
.timeline{
  position:relative;
  margin-top:8px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:19px;
  top:14px;
  bottom:14px;
  width:1px;
  background:var(--line);
}
.tl-step{
  position:relative;
  padding:0 0 36px 64px;
}
.tl-step:last-child{padding-bottom:0;}
.tl-dot{
  position:absolute;
  left:0;
  top:2px;
  width:40px;
  height:40px;
  border-radius:50%;
  border:1.5px solid var(--lime-500);
  background:var(--paper-50);
  display:flex;
  align-items:center;
  justify-content:center;
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:13px;
  font-weight:800;
  color:var(--ink-900);
}
.tl-step h3{
  font-size:20px;
  font-weight:800;
  letter-spacing:-.01em;
  line-height:1.35;
  margin-bottom:8px;
}
.tl-step p{
  font-size:15.5px;
  color:var(--ink-500);
  max-width:640px;
}
.tl-step .mini{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:12px;
}
.mini span{
  font-size:12px;
  padding:5px 12px;
  border-radius:999px;
  background:var(--paper-100);
  color:var(--ink-500);
}
.dot-list{display:grid;gap:10px;margin-top:12px;}
.dot-list li{
  position:relative;
  padding-left:18px;
  font-size:15px;
  color:var(--ink-500);
}
.dot-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:.72em;
  width:6px;
  height:6px;
  border-radius:2px;
  background:var(--lime-500);
}

/* ---------- Compare table ---------- */
.compare-wrap{
  margin-top:32px;
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  overflow:hidden;
  background:var(--paper-0);
  box-shadow:var(--shadow-card);
}
table.compare{
  width:100%;
  border-collapse:collapse;
  font-size:15px;
}
table.compare caption{
  caption-side:top;
  text-align:left;
  padding:20px 24px;
  font-size:13px;
  letter-spacing:.06em;
  color:var(--ink-300);
  background:var(--paper-50);
  border-bottom:1px solid var(--line);
}
table.compare th,
table.compare td{
  padding:18px 24px;
  text-align:left;
  vertical-align:top;
  border-bottom:1px solid var(--line);
}
table.compare thead th{
  background:var(--ink-800);
  color:#fff;
  font-size:13px;
  font-weight:700;
  letter-spacing:.06em;
}
table.compare thead th:first-child{color:var(--ink-300);}
table.compare tbody th{
  font-weight:700;
  color:var(--ink-900);
  background:var(--paper-50);
  width:22%;
}
table.compare tbody td{color:var(--ink-500);}
table.compare tbody tr:last-child th,
table.compare tbody tr:last-child td{border-bottom:none;}
table.compare tbody tr:hover td{background:rgba(198,242,78,.10);}

/* ---------- Status band ---------- */
.status-band{
  background:var(--ink-900);
  color:var(--text-on-dark);
  padding:56px 0;
}
.status-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
  margin-top:32px;
}
.status-card{
  border:1px solid var(--deep-line);
  border-radius:var(--radius-md);
  padding:24px;
  background:var(--ink-800);
  transition:border-color .24s var(--ease),transform .24s var(--ease);
}
.status-card:hover{border-color:rgba(198,242,78,.35);transform:translateY(-3px);}
.status-card .line-name{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:15px;
  font-weight:700;
  color:#fff;
}
.pulse{
  display:inline-flex;
  align-items:center;
  gap:7px;
  font-size:12px;
  color:var(--lime-500);
}
.pulse::before{
  content:"";
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--lime-500);
  box-shadow:0 0 0 4px rgba(198,242,78,.16);
}
.status-card p{
  margin-top:12px;
  font-size:14px;
  color:var(--ink-300);
}
.status-card .num{
  display:block;
  margin-top:16px;
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:28px;
  font-weight:800;
  color:var(--lime-500);
}

/* ---------- Trouble grid ---------- */
.trouble-grid{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:24px;
  margin-top:36px;
}
.trouble-card{
  grid-column:span 7;
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:28px;
  background:var(--paper-0);
  box-shadow:var(--shadow-card);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.trouble-card:nth-child(2),
.trouble-card:nth-child(4){grid-column:span 5;}
.trouble-card:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-hover);
  border-color:rgba(198,242,78,.6);
}
.trouble-card h3{
  font-size:18px;
  font-weight:800;
  line-height:1.4;
  margin-bottom:10px;
}
.trouble-card p{
  font-size:15px;
  color:var(--ink-500);
}
.trouble-card .badge{margin-bottom:14px;}

/* ---------- FAQ ---------- */
.faq-list{
  max-width:860px;
  margin:36px auto 0;
  display:grid;
  gap:12px;
}
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  background:var(--paper-0);
  overflow:hidden;
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.faq-item.is-open{
  border-color:var(--ink-900);
  box-shadow:var(--shadow-card);
}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:20px 24px;
  text-align:left;
  font-size:18px;
  font-weight:700;
  line-height:1.5;
  color:var(--ink-900);
}
.faq-icon{
  position:relative;
  width:22px;
  height:22px;
  flex:none;
  transition:transform .26s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  background:var(--ink-900);
  border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-a{
  display:grid;
  grid-template-rows:0fr;
  transition:grid-template-rows .26s var(--ease);
}
.faq-item.is-open .faq-a{grid-template-rows:1fr;}
.faq-a-inner{overflow:hidden;}
.faq-a p{
  padding:0 24px 22px;
  font-size:15.5px;
  line-height:1.85;
  color:var(--ink-500);
  max-width:760px;
}

/* ---------- CTA ---------- */
.cta-light{
  padding:72px 0;
  background:var(--paper-100);
  border-top:1px solid var(--line);
}
.cta-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-row h2{
  font-size:32px;
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1.25;
}
.cta-row p{
  margin-top:10px;
  font-size:15px;
  color:var(--ink-500);
  max-width:640px;
}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--ink-900);
  color:var(--text-on-dark);
  border-top:1px solid var(--deep-line);
  padding:72px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-col h4{
  font-size:13px;
  font-weight:500;
  letter-spacing:.1em;
  color:var(--ink-300);
  margin-bottom:18px;
}
.footer-col ul{display:grid;gap:12px;}
.footer-col a{
  font-size:14px;
  color:var(--text-on-dark);
  transition:color .2s var(--ease);
  border-bottom:1px solid transparent;
  padding-bottom:2px;
}
.footer-col a:hover{color:var(--lime-500);border-bottom-color:var(--lime-500);}
.footer-about p{
  margin-top:16px;
  font-size:14px;
  line-height:1.85;
  color:var(--ink-300);
  max-width:340px;
}
.site-footer .logo-text{color:#fff;}
.site-footer .logo-sub{color:var(--ink-300);}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  margin-top:56px;
  padding-top:24px;
  border-top:1px solid var(--deep-line);
  font-size:13px;
  color:var(--ink-300);
}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .28s var(--ease),transform .28s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- Responsive ---------- */
@media (max-width:1023px){
  .nav-links{
    position:fixed;
    top:0;
    right:0;
    bottom:0;
    width:320px;
    max-width:86vw;
    flex-direction:column;
    align-items:flex-start;
    justify-content:flex-start;
    gap:6px;
    padding:96px 24px 32px;
    background:var(--paper-50);
    border-left:1px solid var(--line);
    box-shadow:-18px 0 40px rgba(13,19,17,.18);
    transform:translateX(102%);
    transition:transform .28s var(--ease);
    z-index:80;
    overflow-y:auto;
  }
  .nav-links.is-open{transform:translateX(0);}
  .nav-links a{width:100%;padding:14px 0;font-size:16px;border-bottom:1px solid var(--line);}
  .nav-links a::after{display:none;}
  .nav-links a.is-active{color:var(--ink-900);}
  .nav-links a.is-active,
  .nav-links a:hover{border-left:2px solid var(--lime-500);padding-left:12px;}
  .nav-cta{display:none;}
  .nav-toggle{display:flex;}
  .nav-toggle{display:flex;position:relative;z-index:90;}
  .guide-layout{grid-template-columns:1fr;gap:36px;}
  .side-toc{position:static;}
  .side-toc ol{display:flex;flex-wrap:wrap;gap:8px;}
  .side-toc li{flex:0 0 auto;}
  .side-toc a{border-left:none;border:1px solid var(--line);border-radius:999px;padding:7px 14px;background:var(--paper-0);}
  .side-toc a.is-current{border-color:var(--lime-500);background:var(--lime-100);}
  .toc-note{display:none;}
  .section{padding:72px 0;}
  .cat-hero h1{font-size:42px;}
  .status-grid{grid-template-columns:1fr;}
  .trouble-card,.trouble-card:nth-child(2),.trouble-card:nth-child(3),.trouble-card:nth-child(4){grid-column:span 12;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .logo-text{font-size:15px;}
  .logo-sub{display:none;}
  .cat-hero{padding:52px 0 60px;}
  .cat-hero h1{font-size:34px;}
  .cat-hero .hero-sub{font-size:17px;}
  .hero-meta{gap:24px;margin-top:32px;}
  .hero-meta .item strong{font-size:26px;}
  .section-title{font-size:26px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:28px;}
  .tl-step{padding-left:56px;}
  .tl-step h3{font-size:18px;}
  .compare-wrap{overflow-x:auto;}
  table.compare{min-width:520px;}
  .faq-q{font-size:16px;padding:18px 18px;}
  .faq-a p{padding:0 18px 18px;}
  .cta-row h2{font-size:26px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:520px){
  .cat-hero h1{font-size:30px;}
  .btn{width:100%;}
  .cta-actions{width:100%;flex-direction:column;align-items:stretch;}
  .btn-text{width:auto;}
  .hero-tags .tag{font-size:12px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
  --ink-900:#0D1311;
  --ink-800:#141B18;
  --ink-600:#2B3733;
  --ink-500:#48564F;
  --ink-300:#8A9A93;
  --lime-500:#C6F24E;
  --lime-600:#A9D93A;
  --lime-100:#EEFBC8;
  --amber-500:#FFB86B;
  --paper-0:#FFFFFF;
  --paper-50:#F7F5F0;
  --paper-100:#EFECE4;
  --line:#E4E1D8;
  --deep-line:rgba(255,255,255,.10);
  --dark-text:#DCE5E0;
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:10px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --shadow-soft:0 1px 2px rgba(13,19,17,.05);
  --shadow-hover:0 14px 34px rgba(13,19,17,.10);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--ink-900);
  background:var(--paper-50);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),border-color .22s var(--ease)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea{font:inherit}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.22}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--lime-500);outline-offset:2px;border-radius:4px}

.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-dark{background:var(--ink-900);color:var(--dark-text)}
.section-dark h2,.section-dark h3{color:#fff}
.section-paper{background:var(--paper-50)}
.section-white{background:var(--paper-0)}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:500;letter-spacing:.12em;
  padding:6px 14px;border-radius:999px;
  background:var(--lime-100);color:var(--ink-900);
}
.section-dark .eyebrow{background:transparent;border:1px solid rgba(198,242,78,.55);color:var(--lime-500)}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--lime-600)}
.section-dark .eyebrow::before{background:var(--lime-500)}

.section-head{margin-bottom:40px}
.section-head h2{
  font-size:40px;
  display:flex;align-items:center;gap:14px;
  line-height:1.22;
}
.section-head h2::before{content:"";width:3px;height:28px;border-radius:2px;background:var(--lime-500);flex:none}
.section-head p{margin-top:16px;max-width:720px;font-size:17px;color:var(--ink-500)}
.section-dark .section-head p{color:var(--ink-300)}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  transition:transform .22s var(--ease),background .22s var(--ease),color .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--lime-500);color:var(--ink-900)}
.btn-primary:hover{background:var(--lime-600);transform:translateY(-1px);box-shadow:0 10px 24px rgba(198,242,78,.28)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-outline{border:1.5px solid var(--ink-900);color:var(--ink-900)}
.btn-outline:hover{background:var(--ink-900);color:#fff;transform:translateY(-1px)}
.btn-outline-light{border:1.5px solid rgba(220,229,224,.7);color:#fff}
.btn-outline-light:hover{background:#fff;color:var(--ink-900);transform:translateY(-1px)}
.btn-lg{height:54px;padding:0 34px;font-size:16px}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:700;
  color:var(--ink-900);border-bottom:2px solid var(--lime-500);padding-bottom:2px;
}
.btn-text:hover{border-bottom-width:3px}
.section-dark .btn-text{color:#fff}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}

/* ===== 头部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--ink-900);
  border-bottom:1px solid var(--deep-line);
  transition:background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(13,19,17,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:0 10px 30px rgba(0,0,0,.28);
}
.nav{display:flex;align-items:center;gap:32px;height:76px;transition:height .24s var(--ease)}
.site-header.is-scrolled .nav{height:64px}
.logo{display:flex;align-items:center;gap:12px;flex:none}
.logo-mark{
  width:26px;height:26px;border-radius:7px;background:var(--lime-500);flex:none;
  box-shadow:0 0 0 4px rgba(198,242,78,.14);
}
.logo-text{display:block;font-size:17px;font-weight:800;color:#fff;letter-spacing:-.02em;line-height:1.25}
.logo-text em{font-style:normal;color:var(--lime-500)}
.logo-sub{display:block;font-size:11px;color:var(--ink-300);letter-spacing:.16em}
.nav-links{margin-left:auto;display:flex;align-items:center;gap:32px}
.nav-links a{position:relative;font-size:15px;color:#C3CFC9;padding:6px 0}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:-4px;width:0;height:2px;border-radius:2px;
  background:var(--lime-500);transform:translateX(-50%);transition:width .24s var(--ease);
}
.nav-links a:hover{color:#fff}
.nav-links a:hover::after{width:20px}
.nav-links a.is-active{color:#fff;font-weight:600}
.nav-links a.is-active::after{width:20px}
.nav-cta{margin-left:8px}
.nav-toggle{
  display:none;width:44px;height:44px;margin-left:auto;
  border-radius:10px;border:1px solid var(--deep-line);
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#DCE5E0;transition:transform .24s var(--ease),opacity .24s var(--ease)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.drawer-mask{
  position:fixed;inset:0;background:rgba(13,19,17,.55);
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);z-index:90;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:320px;max-width:86vw;
  background:var(--paper-50);z-index:95;padding:28px 24px;
  transform:translateX(100%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;gap:10px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer h3{font-size:13px;letter-spacing:.14em;color:var(--ink-300);font-weight:600;margin-bottom:6px}
.drawer a.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 16px;border-radius:var(--radius-md);border:1px solid var(--line);
  background:var(--paper-0);font-size:15px;font-weight:600;
}
.drawer a.drawer-link:hover{border-color:var(--lime-600);color:var(--ink-900)}
.drawer a.drawer-link.is-active{background:var(--ink-900);color:#fff;border-color:var(--ink-900)}
.drawer .btn{margin-top:14px;width:100%}
.drawer-note{margin-top:auto;padding-top:20px;font-size:13px;color:var(--ink-500);line-height:1.8;border-top:1px solid var(--line)}

/* ===== 分类头 ===== */
.cat-hero{
  position:relative;overflow:hidden;
  background:var(--ink-900) url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  padding:64px 0 56px;color:#fff;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(13,19,17,.95) 0%,rgba(13,19,17,.82) 48%,rgba(13,19,17,.58) 100%);
}
.cat-hero .container{position:relative;z-index:2}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-300);margin-bottom:24px;flex-wrap:wrap}
.crumb a:hover{color:var(--lime-500)}
.crumb .sep{opacity:.6}
.crumb .now{color:#DCE5E0;max-width:240px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.cat-hero h1{font-size:56px;font-weight:900;line-height:1.15;max-width:900px}
.cat-hero h1 em{font-style:normal;color:var(--lime-500)}
.cat-hero .lede{margin-top:20px;max-width:660px;font-size:18px;line-height:1.8;color:var(--ink-300)}
.cat-hero .hero-actions{margin-top:32px;display:flex;gap:14px;flex-wrap:wrap}

/* ===== 速览条 ===== */
.quick{background:var(--paper-50);padding:0;border-bottom:1px solid var(--line)}
.quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0}
.quick-item{
  padding:32px 28px;border-left:1px solid var(--line);
  display:flex;flex-direction:column;gap:6px;position:relative;
  transition:background .22s var(--ease);
}
.quick-item:first-child{border-left:0}
.quick-item:hover{background:var(--paper-100)}
.quick-item .live{display:flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.08em;color:var(--ink-500)}
.quick-item .dot{width:8px;height:8px;border-radius:50%;background:var(--lime-600);position:relative}
.quick-item .dot::after{
  content:"";position:absolute;inset:-4px;border-radius:50%;border:1px solid rgba(169,217,58,.6);
  animation:pulse 2s var(--ease) infinite;
}
@keyframes pulse{0%{transform:scale(.7);opacity:1}100%{transform:scale(1.5);opacity:0}}
.quick-item .num{font-size:32px;font-weight:800;font-variant-numeric:tabular-nums;line-height:1.2}
.quick-item .num span{font-size:15px;font-weight:600;color:var(--ink-500);margin-left:6px}
.quick-item .desc{font-size:14px;color:var(--ink-500)}

/* ===== 对比表 ===== */
.table-wrap{
  border:1px solid var(--deep-line);border-radius:var(--radius-lg);
  background:var(--ink-800);overflow:hidden;
}
.plan-table{width:100%;border-collapse:collapse}
.plan-table th,.plan-table td{
  padding:0 24px;height:56px;text-align:left;
  border-bottom:1px solid var(--deep-line);
  font-size:15px;color:var(--dark-text);
  vertical-align:middle;
}
.plan-table thead th{
  height:76px;font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--ink-300);background:rgba(255,255,255,.04);
  position:sticky;top:0;
}
.plan-table td:first-child,.plan-table th:first-child{color:#fff;font-weight:600}
.plan-table tbody tr:last-child td{border-bottom:0}
.plan-table tbody tr{transition:background .22s var(--ease)}
.plan-table tbody tr:hover td{background:rgba(198,242,78,.06)}
.plan-table .col-reco{position:relative;color:var(--lime-500);background:rgba(198,242,78,.05)}
.plan-table thead th.col-reco::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--lime-500);
}
.plan-table thead th.col-reco{color:var(--lime-500);font-weight:700}
.plan-table td.col-reco{color:#fff;background:rgba(198,242,78,.05)}
.price-cell{font-variant-numeric:tabular-nums;font-weight:700;font-size:17px}
.price-cell small{font-weight:500;font-size:13px;color:var(--ink-300);margin-left:4px}
.badge{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;vertical-align:middle;margin-left:8px;
}
.badge-lime{background:var(--lime-500);color:var(--ink-900)}
.badge-amber{background:rgba(255,184,107,.16);color:var(--amber-500);border:1px solid rgba(255,184,107,.4)}
.tick{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:#fff}
.tick i{
  width:20px;height:20px;border-radius:50%;background:var(--lime-500);flex:none;
  display:inline-flex;align-items:center;justify-content:center;
}
.tick i::before{content:"";width:8px;height:4px;border-left:2px solid var(--ink-900);border-bottom:2px solid var(--ink-900);transform:rotate(-45deg) translateY(-1px)}
.dash{color:var(--ink-300);font-size:16px}
.table-note{margin-top:20px;font-size:14px;color:var(--ink-300)}
.plan-cards{display:none;gap:16px}

/* ===== 档位卡 ===== */
.tier-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.tier-card{
  background:var(--paper-0);border:1px solid var(--line);border-radius:var(--radius-md);
  box-shadow:var(--shadow-soft);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.tier-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#D6D2C6}
.tier-card .cover{aspect-ratio:16/9;width:100%;object-fit:cover;background:var(--paper-100)}
.tier-body{padding:24px;display:flex;flex-direction:column;gap:14px;flex:1}
.tier-body h3{font-size:24px}
.tier-price{font-size:40px;font-weight:800;font-variant-numeric:tabular-nums;line-height:1.1;letter-spacing:-.03em}
.tier-price small{font-size:15px;font-weight:600;color:var(--ink-500);margin-left:6px;letter-spacing:0}
.tier-body ul{display:flex;flex-direction:column;gap:10px}
.tier-body li{position:relative;padding-left:18px;font-size:15px;color:var(--ink-500);line-height:1.8}
.tier-body li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:2px;background:var(--lime-600)}
.tier-foot{margin-top:auto;padding-top:8px;display:flex;flex-direction:column;gap:10px}
.tier-card.is-focus{background:var(--ink-900);border-color:var(--ink-900);color:#fff}
.tier-card.is-focus h3,.tier-card.is-focus .tier-price{color:#fff}
.tier-card.is-focus .tier-body li{color:var(--ink-300)}
.tier-card.is-focus .tier-price small{color:var(--ink-300)}
.tier-card.is-focus .btn-outline{border-color:rgba(220,229,224,.7);color:#fff}
.tier-card.is-focus .btn-outline:hover{background:#fff;color:var(--ink-900)}
.tier-tagline{font-size:14px;color:var(--ink-500);min-height:44px}
.tier-card.is-focus .tier-tagline{color:var(--ink-300)}

/* ===== 开通流程 ===== */
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:8px}
.step{
  border:1px solid var(--deep-line);border-radius:var(--radius-md);
  padding:24px;background:var(--ink-800);
  transition:border-color .24s var(--ease),transform .24s var(--ease);
}
.step:hover{border-color:rgba(198,242,78,.35);transform:translateY(-3px)}
.step .idx{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--lime-500);
  color:var(--lime-500);display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:15px;font-variant-numeric:tabular-nums;
}
.step h3{margin-top:18px;font-size:20px}
.step p{margin-top:10px;font-size:15px;color:var(--ink-300);line-height:1.85}
.open-panel{
  margin-top:40px;display:grid;grid-template-columns:1.4fr 1fr;gap:24px;
  border:1px solid var(--deep-line);border-radius:var(--radius-lg);padding:32px;background:var(--ink-800);
}
.open-panel h3{font-size:24px}
.open-panel p{margin-top:12px;font-size:15px;color:var(--ink-300)}
.open-panel .open-actions{margin-top:24px;display:flex;gap:14px;flex-wrap:wrap}
.open-facts{border-left:1px solid var(--deep-line);padding-left:24px;display:flex;flex-direction:column;gap:16px;justify-content:center}
.open-facts div{display:flex;flex-direction:column;gap:4px}
.open-facts strong{font-size:22px;font-weight:800;font-variant-numeric:tabular-nums;color:#fff}
.open-facts span{font-size:13px;color:var(--ink-300)}

/* ===== FAQ ===== */
.faq-list{max-width:820px;display:flex;flex-direction:column;gap:12px}
.faq-item{border:1px solid var(--line);border-radius:var(--radius-md);background:var(--paper-0);overflow:hidden;transition:border-color .24s var(--ease)}
.faq-item.is-open{border-color:var(--ink-900)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;text-align:left;font-size:18px;font-weight:700;min-height:44px;
}
.faq-q .plus{
  width:22px;height:22px;position:relative;flex:none;
  transition:transform .26s var(--ease);
}
.faq-q .plus::before,.faq-q .plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink-900);border-radius:2px;
}
.faq-q .plus::before{width:14px;height:2px;transform:translate(-50%,-50%)}
.faq-q .plus::after{width:2px;height:14px;transform:translate(-50%,-50%)}
.faq-item.is-open .plus{transform:rotate(45deg)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .26s var(--ease)}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a-inner{overflow:hidden}
.faq-a-inner p{padding:0 24px 22px;font-size:15.5px;line-height:1.85;color:var(--ink-500)}

/* ===== CTA ===== */
.cta-band{
  background:var(--ink-900);
  background-image:radial-gradient(rgba(198,242,78,.14) 1px,transparent 1px);
  background-size:18px 18px;
  border-top:1px solid var(--deep-line);
  padding:80px 0;
}
.cta-inner{display:grid;grid-template-columns:1.5fr 1fr;gap:40px;align-items:center}
.cta-inner h2{font-size:38px;font-weight:900;line-height:1.2;color:#fff}
.cta-inner p{margin-top:16px;font-size:16px;color:var(--ink-300);max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;justify-content:flex-end}

/* ===== 页脚 ===== */
.site-footer{background:#080D0B;border-top:1px solid var(--deep-line);padding:72px 0 0;color:var(--ink-300)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-about p{margin-top:18px;font-size:14px;line-height:1.9;color:var(--ink-300);max-width:320px}
.footer-col h4{font-size:13px;font-weight:600;letter-spacing:.14em;color:var(--ink-300);margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{font-size:14px;color:var(--dark-text)}
.footer-col a:hover{color:var(--lime-500);text-decoration:underline;text-underline-offset:4px}
.footer-bottom{
  margin-top:56px;padding:24px 0;border-top:1px solid var(--deep-line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-300);
}

/* ===== 进入视口动画 ===== */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s 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}
}

/* ===== 响应式 ===== */
@media (max-width:1279px){
  .cat-hero h1{font-size:48px}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:flex}
  .cat-hero h1{font-size:40px}
  .cat-hero .lede{font-size:17px}
  .section-head h2{font-size:32px}
  .quick-grid{grid-template-columns:1fr}
  .quick-item{border-left:0;border-top:1px solid var(--line);padding:24px 20px}
  .quick-item:first-child{border-top:0}
  .tier-grid{grid-template-columns:1fr}
  .steps-grid{grid-template-columns:1fr}
  .open-panel{grid-template-columns:1fr}
  .open-facts{border-left:0;border-top:1px solid var(--deep-line);padding-left:0;padding-top:24px}
  .cta-inner{grid-template-columns:1fr}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .cat-hero{padding:44px 0 40px}
  .cat-hero h1{font-size:34px}
  .cat-hero .lede{font-size:16px}
  .section-head h2{font-size:26px}
  .section-head p{font-size:15.5px}
  .plan-table{display:none}
  .plan-cards{display:grid;grid-template-columns:1fr}
  .plan-card{border:1px solid var(--deep-line);border-radius:var(--radius-md);background:var(--ink-800);padding:22px;position:relative}
  .plan-card.is-reco{border-color:rgba(198,242,78,.55)}
  .plan-card.is-reco::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--lime-500);border-radius:14px 14px 0 0}
  .plan-card h3{font-size:20px;color:#fff;display:flex;align-items:center;gap:8px}
  .plan-card .pc-price{margin-top:8px;font-size:28px;font-weight:800;color:var(--lime-500);font-variant-numeric:tabular-nums}
  .plan-card .pc-price small{font-size:13px;color:var(--ink-300);margin-left:4px;font-weight:500}
  .plan-card ul{margin-top:16px;display:flex;flex-direction:column;gap:10px}
  .plan-card li{
    display:flex;justify-content:space-between;gap:12px;
    font-size:14px;color:var(--dark-text);padding-bottom:10px;border-bottom:1px solid var(--deep-line);
  }
  .plan-card li:last-child{border-bottom:0;padding-bottom:0}
  .plan-card li span:last-child{color:var(--ink-300);flex:none}
  .plan-card li span.ok{color:var(--lime-500);font-weight:600}
  .tier-grid{gap:16px}
  .tier-price{font-size:34px}
  .cta-inner h2{font-size:28px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
}
@media (max-width:420px){
  .btn{width:100%;padding:0 20px}
  .hero-actions,.cta-actions,.open-actions{flex-direction:column;align-items:stretch}
  .cat-hero h1{font-size:30px}
  .faq-q{font-size:16px;padding:18px 18px}
  .faq-a-inner p{padding:0 18px 20px}
}

/* roulang page: category3 */
:root{
  --ink-900:#0D1311;
  --ink-800:#141B18;
  --ink-600:#2B3733;
  --ink-500:#48564F;
  --ink-300:#8A9A93;
  --lime-500:#C6F24E;
  --lime-600:#A9D93A;
  --lime-100:#EEFBC8;
  --amber-500:#FFB86B;
  --paper-0:#FFFFFF;
  --paper-50:#F7F5F0;
  --paper-100:#EFECE4;
  --line:#E4E1D8;
  --deep-line:rgba(255,255,255,.10);
  --dark-text:#DCE5E0;
  --radius-lg:20px;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 1px 2px rgba(13,19,17,.05);
  --shadow-hover:0 14px 34px rgba(13,19,17,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --sec-pad:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--ink-900);
  background:var(--paper-50);
  letter-spacing:0;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button,input,textarea{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:none;}
:focus-visible{outline:2px solid var(--lime-500);outline-offset:2px;border-radius:4px;}
h1,h2,h3,h4{margin:0;letter-spacing:-.02em;font-weight:900;line-height:1.22;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
time,.num{font-variant-numeric:tabular-nums;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(13,19,17,.94);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--deep-line);
  transition:box-shadow .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 10px 30px rgba(0,0,0,.28);}
.nav{display:flex;align-items:center;gap:32px;height:76px;transition:height .24s var(--ease);}
.site-header.is-scrolled .nav{height:64px;}
.logo{display:flex;align-items:center;gap:11px;color:#fff;flex-shrink:0;}
.logo-mark{
  width:26px;height:26px;border-radius:8px;background:var(--lime-500);
  box-shadow:0 0 0 4px rgba(198,242,78,.16);
  flex-shrink:0;
}
.logo-text{display:block;font-size:16px;font-weight:800;letter-spacing:-.01em;line-height:1.3;white-space:nowrap;}
.logo-text em{font-style:normal;color:var(--lime-500);}
.logo-sub{display:block;font-size:11px;color:var(--ink-300);letter-spacing:.16em;line-height:1.4;}
.nav-links{margin-left:auto;display:flex;align-items:center;gap:32px;}
.nav-links a{
  position:relative;display:inline-block;padding:6px 0;
  font-size:15px;color:#C7D2CD;transition:color .22s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:-4px;width:20px;height:2px;
  background:var(--lime-500);transform:translateX(-50%) scaleX(0);
  transition:transform .24s var(--ease);
}
.nav-links a:hover{color:#fff;}
.nav-links a:hover::after,.nav-links a.is-active::after{transform:translateX(-50%) scaleX(1);}
.nav-links a.is-active{color:#fff;}
.nav-cta{margin-left:8px;height:44px;padding:0 22px;font-size:14px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-sm);
  border:1px solid var(--deep-line);margin-left:auto;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
  transition:border-color .22s var(--ease);
}
.nav-toggle span{display:block;width:18px;height:2px;background:#DCE5E0;border-radius:2px;transition:transform .24s var(--ease),opacity .24s var(--ease);}
.nav-toggle:hover{border-color:rgba(198,242,78,.5);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.drawer-cta{display:none;}
.nav-mask{
  position:fixed;inset:0;background:rgba(13,19,17,.55);
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);z-index:65;
}
body.nav-open .nav-mask{opacity:1;visibility:visible;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  transition:background .24s var(--ease),color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.btn-primary{background:var(--lime-500);color:var(--ink-900);}
.btn-primary:hover{background:var(--lime-600);transform:translateY(-1px);box-shadow:0 10px 24px rgba(198,242,78,.28);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:transparent;border:1.5px solid #DCE5E0;color:#DCE5E0;}
.btn-ghost:hover{background:#DCE5E0;color:var(--ink-900);border-color:#DCE5E0;}
.btn-outline{background:transparent;border:1.5px solid var(--ink-900);color:var(--ink-900);}
.btn-outline:hover{background:var(--ink-900);color:#fff;}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--ink-900);
  font-weight:700;font-size:14px;
  border-bottom:2px solid var(--lime-500);padding-bottom:2px;
  transition:border-color .22s var(--ease),gap .22s var(--ease);
}
.btn-link:hover{border-color:var(--ink-900);gap:10px;}

/* ---------- section base ---------- */
.section{padding:var(--sec-pad) 0;}
.section-light{background:var(--paper-50);}
.section-paper{background:var(--paper-100);}
.section-dark{background:var(--ink-900);color:var(--dark-text);position:relative;overflow:hidden;}
.section-dark h2,.section-dark h3{color:#fff;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:36px;flex-wrap:wrap;}
.sec-head h2{font-size:clamp(26px,3.3vw,40px);display:flex;align-items:center;gap:14px;}
.sec-head h2::before{content:"";width:3px;height:22px;background:var(--lime-500);border-radius:2px;flex-shrink:0;}
.sec-sub{margin-top:12px;font-size:16px;color:var(--ink-500);max-width:640px;}
.section-dark .sec-sub{color:var(--ink-300);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;
  border-radius:999px;border:1px solid rgba(198,242,78,.45);
  color:var(--lime-500);font-size:12px;font-weight:600;letter-spacing:.08em;
}

/* ---------- category hero ---------- */
.cat-hero{position:relative;background:var(--ink-900);color:var(--dark-text);padding:44px 0 64px;overflow:hidden;}
.cat-hero-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;opacity:.18;}
.cat-hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,var(--ink-900) 6%,rgba(13,19,17,.72) 52%,rgba(13,19,17,.94));}
.cat-hero .container{position:relative;z-index:2;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-300);margin-bottom:26px;flex-wrap:wrap;}
.breadcrumb a{color:var(--ink-300);transition:color .22s var(--ease);}
.breadcrumb a:hover{color:var(--lime-500);}
.breadcrumb .cur{color:#DCE5E0;}
.cat-hero h1{
  font-size:clamp(30px,4.6vw,54px);line-height:1.16;color:#fff;
  max-width:19em;margin:18px 0 20px;
}
.hero-lead{font-size:clamp(16px,1.6vw,19px);line-height:1.8;color:#B9C6C0;max-width:720px;}
.status-bar{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:1px;margin-top:44px;border:1px solid var(--deep-line);border-radius:var(--radius);overflow:hidden;
  background:var(--deep-line);
}
.status-item{background:rgba(20,27,24,.72);padding:20px 22px;}
.status-item strong{display:block;font-size:30px;font-weight:800;color:#fff;letter-spacing:-.02em;line-height:1.2;}
.status-item strong em{font-style:normal;color:var(--lime-500);font-size:16px;margin-left:2px;}
.status-item span{display:block;margin-top:6px;font-size:13px;color:var(--ink-300);}

/* ---------- filter pills ---------- */
.filter-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.pill{
  display:inline-flex;align-items:center;height:38px;padding:0 18px;border-radius:999px;
  border:1px solid var(--line);background:var(--paper-0);
  font-size:14px;font-weight:600;color:var(--ink-500);
  transition:all .22s var(--ease);
}
.pill:hover{border-color:var(--ink-900);color:var(--ink-900);transform:translateY(-1px);}
.pill.is-on{background:var(--ink-900);border-color:var(--ink-900);color:var(--lime-500);}
.pill.is-on:hover{color:var(--lime-500);}

/* ---------- mosaic ---------- */
.mosaic{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  grid-auto-rows:246px;
  grid-auto-flow:dense;
  gap:24px;
}
.tile{
  display:flex;flex-direction:column;gap:10px;
  padding:22px;background:var(--paper-0);
  border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.tile:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#CBD5C6;}
.tile-top{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:var(--lime-100);color:var(--ink-900);font-size:12px;font-weight:600;letter-spacing:.02em;
  white-space:nowrap;
}
.badge.badge-amber{background:#FFF0DE;color:#8A4A12;}
.badge.badge-gray{background:var(--paper-100);color:var(--ink-500);}
.tile-top time{font-size:13px;color:var(--ink-300);}
.tile-title{font-size:18px;font-weight:800;line-height:1.45;letter-spacing:-.01em;}
.tile-title a{transition:color .22s var(--ease);}
.tile-title a:hover{color:#4E6B0F;}
.tile-desc{
  font-size:14px;line-height:1.75;color:var(--ink-500);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.tile-foot{
  margin-top:auto;display:flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;color:var(--ink-500);
}
.tile-foot .arrow{
  width:16px;height:2px;background:currentColor;position:relative;
  transition:transform .24s var(--ease);
}
.tile-foot .arrow::after{
  content:"";position:absolute;right:0;top:-3px;width:7px;height:7px;
  border-top:2px solid currentColor;border-right:2px solid currentColor;
  transform:rotate(45deg);
}
.tile:hover .tile-foot .arrow{transform:translateX(4px);}
.tile:hover .tile-foot{color:var(--ink-900);}

.tile.lead{grid-column:span 2;grid-row:span 2;padding:0;gap:0;}
.lead-media{height:274px;overflow:hidden;background:var(--paper-100);flex-shrink:0;}
.lead-media img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease);}
.tile.lead:hover .lead-media img{transform:scale(1.03);}
.lead-body{flex:1;display:flex;flex-direction:column;gap:12px;padding:24px;}
.lead-body .tile-title{font-size:24px;line-height:1.4;}
.lead-body .tile-desc{font-size:15px;-webkit-line-clamp:3;}
.lead-meta{display:flex;align-items:center;gap:14px;font-size:13px;color:var(--ink-300);}

/* ---------- timeline (dark) ---------- */
.timeline{position:relative;max-width:900px;}
.timeline::before{
  content:"";position:absolute;left:74px;top:12px;bottom:12px;width:1px;
  background:var(--deep-line);
}
.tl-item{position:relative;display:grid;grid-template-columns:74px 1fr;gap:28px;padding:16px 0;}
.tl-time{
  font-size:14px;font-weight:700;color:var(--lime-500);letter-spacing:.02em;
  padding-top:2px;
}
.tl-body{position:relative;padding:0 0 4px 26px;}
.tl-body::before{
  content:"";position:absolute;left:-5px;top:9px;width:11px;height:11px;border-radius:50%;
  background:var(--ink-900);border:2px solid var(--lime-500);
}
.tl-body h3{font-size:17px;font-weight:700;color:#fff;line-height:1.5;}
.tl-body p{margin-top:6px;font-size:14.5px;color:var(--ink-300);line-height:1.75;}
.tl-tag{
  display:inline-flex;align-items:center;height:22px;padding:0 9px;margin-left:10px;
  border-radius:999px;border:1px solid rgba(198,242,78,.4);color:var(--lime-500);
  font-size:11.5px;font-weight:600;letter-spacing:.02em;vertical-align:2px;
}
.rhythm-note{
  margin-top:36px;display:flex;align-items:center;gap:18px;flex-wrap:wrap;
  padding:22px 24px;border:1px solid var(--deep-line);border-radius:var(--radius);
  background:rgba(20,27,24,.6);
}
.rhythm-note p{font-size:14.5px;color:var(--ink-300);flex:1;min-width:240px;}

/* ---------- rank list ---------- */
.rank-list{border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--paper-0);overflow:hidden;box-shadow:var(--shadow);}
.rank-row{
  display:grid;grid-template-columns:64px minmax(0,1fr) 120px 110px 90px;
  align-items:center;gap:18px;padding:18px 24px;border-bottom:1px solid var(--line);
  transition:background .22s var(--ease);
}
.rank-row:last-child{border-bottom:none;}
.rank-row:not(.rank-head):hover{background:rgba(198,242,78,.10);}
.rank-head{padding-top:14px;padding-bottom:14px;background:var(--paper-100);}
.rank-head span{font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--ink-500);}
.rk-no{font-size:20px;font-weight:900;color:var(--ink-900);letter-spacing:-.02em;}
.rk-no.top{color:#7FA50E;}
.rk-title{font-size:15.5px;font-weight:700;line-height:1.5;}
.rk-title small{display:block;font-size:13px;font-weight:400;color:var(--ink-500);margin-top:4px;}
.rk-cat{font-size:13px;color:var(--ink-500);}
.rk-val{font-size:15px;font-weight:700;text-align:right;}
.rk-trend{font-size:13px;font-weight:700;text-align:right;color:#7FA50E;}
.rk-trend.down{color:#B26B2A;}

/* ---------- faq ---------- */
.faq{max-width:860px;}
.faq-item{
  border:1px solid var(--line);border-radius:var(--radius);background:var(--paper-0);
  margin-bottom:12px;overflow:hidden;transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.faq-item:hover{border-color:#CBD5C6;}
.faq-item.open{border-color:var(--ink-900);box-shadow:var(--shadow);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 24px;text-align:left;font-size:17px;font-weight:700;line-height:1.5;color:var(--ink-900);
}
.faq-icon{
  position:relative;width:20px;height:20px;flex-shrink:0;
  transition:transform .26s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink-900);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;}
.faq-item.open .faq-icon{transform:rotate(45deg);}
.faq-a{
  display:grid;grid-template-rows:0fr;
  transition:grid-template-rows .26s var(--ease);
}
.faq-item.open .faq-a{grid-template-rows:1fr;}
.faq-a > div{overflow:hidden;}
.faq-a p{padding:0 24px 22px;font-size:15.5px;line-height:1.85;color:var(--ink-500);}

/* ---------- strip cta ---------- */
.cta-strip{
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  padding:32px 36px;border-radius:var(--radius-lg);
  border:1px solid var(--deep-line);
  background:rgba(20,27,24,.78);
  position:relative;overflow:hidden;
}
.cta-strip::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:14px 14px;opacity:.7;
}
.cta-strip > *{position:relative;z-index:2;}
.cta-strip h2{font-size:clamp(20px,2.2vw,27px);line-height:1.35;}
.cta-strip p{margin-top:8px;font-size:14.5px;color:var(--ink-300);max-width:620px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);color:#DCE5E0;padding:66px 0 0;border-top:1px solid var(--deep-line);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;}
.footer-col h4{font-size:13px;font-weight:600;letter-spacing:.12em;color:var(--ink-300);margin-bottom:18px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:#DCE5E0;transition:color .22s var(--ease);}
.footer-col a:hover{color:var(--lime-500);text-decoration:underline;text-underline-offset:4px;}
.footer-about p{margin-top:18px;font-size:14px;line-height:1.85;color:var(--ink-300);max-width:340px;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  padding:22px 0;border-top:1px solid var(--deep-line);
  font-size:13px;color:var(--ink-300);
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .mosaic{grid-template-columns:repeat(3,minmax(0,1fr));}
  .rank-row{grid-template-columns:56px minmax(0,1fr) 100px 90px 80px;gap:14px;}
}
@media (max-width:1023px){
  :root{--sec-pad:72px;}
  .nav-toggle{display:flex;}
  .nav-links{
    position:fixed;top:0;right:0;width:320px;max-width:86vw;height:100vh;
    flex-direction:column;align-items:stretch;gap:6px;
    padding:96px 28px 32px;background:var(--paper-50);
    box-shadow:-20px 0 44px rgba(13,19,17,.24);
    transform:translateX(102%);transition:transform .28s var(--ease);
    z-index:80;overflow-y:auto;
  }
  body.nav-open .nav-links{transform:none;}
  .nav-links a{
    color:var(--ink-900);font-size:17px;font-weight:600;
    padding:14px 0;border-bottom:1px solid var(--line);
  }
  .nav-links a::after{display:none;}
  .nav-links a.is-active{color:#5E7A16;}
  .nav-cta{display:none;}
  .drawer-cta{display:inline-flex;margin-top:22px;height:48px;}
  .mosaic{grid-template-columns:repeat(2,minmax(0,1fr));grid-auto-rows:auto;gap:18px;}
  .tile{min-height:196px;}
  .tile.lead{grid-column:span 2;grid-row:auto;}
  .lead-media{height:220px;}
  .lead-body{padding:20px;}
  .lead-body .tile-title{font-size:20px;}
  .rank-row{grid-template-columns:48px minmax(0,1fr) 92px;gap:14px;padding:16px 20px;}
  .rank-row .rk-cat,.rank-row .rk-trend{display:none;}
  .rank-head span:nth-child(3),.rank-head span:nth-child(5){display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .status-bar{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:767px){
  :root{--sec-pad:56px;}
  .container{padding:0 20px;}
  body{font-size:15.5px;}
  .logo-text{font-size:14px;}
  .logo-sub{display:none;}
  .cat-hero{padding:32px 0 48px;}
  .tl-item{grid-template-columns:56px 1fr;gap:18px;}
  .timeline::before{left:56px;}
  .tl-body{padding-left:20px;}
  .cta-strip{padding:26px 22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;}
  .sec-head{margin-bottom:26px;}
  .faq-q{font-size:16px;padding:17px 18px;}
  .faq-a p{padding:0 18px 18px;}
}
@media (max-width:520px){
  .mosaic{grid-template-columns:1fr;}
  .tile.lead{grid-column:span 1;}
  .lead-media{height:190px;}
  .status-bar{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .filter-row{gap:8px;}
  .pill{height:34px;padding:0 14px;font-size:13px;}
  .btn{width:100%;}
  .btn.nav-cta,.btn.drawer-cta{width:auto;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category4 */
:root{
  --ink-900:#0D1311;
  --ink-800:#141B18;
  --ink-700:#1B2521;
  --ink-600:#2B3733;
  --ink-500:#48564F;
  --ink-300:#8A9A93;
  --lime-500:#C6F24E;
  --lime-600:#A9D93A;
  --lime-100:#EEFBC8;
  --amber-500:#FFB86B;
  --paper-0:#FFFFFF;
  --paper-50:#F7F5F0;
  --paper-100:#EFECE4;
  --line:#E4E1D8;
  --deep-line:rgba(255,255,255,.10);
  --danger:#D8492E;
  --r-lg:20px;
  --r-md:14px;
  --r-sm:10px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(13,19,17,.05);
  --shadow-2:0 14px 34px rgba(13,19,17,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --sp-section:96px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Inter","SF Pro Display","DIN Alternate","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.9;
  color:var(--ink-800);
  background:var(--paper-50);
  letter-spacing:0;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
em{font-style:normal;}
:focus-visible{outline:2px solid var(--lime-500);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--ink-900);
  border-bottom:1px solid transparent;
  transition:border-color var(--ease) 240ms,background var(--ease) 240ms;
}
.site-header.is-scrolled{
  background:rgba(13,19,17,.86);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom-color:var(--deep-line);
}
.nav{
  display:flex;align-items:center;gap:32px;
  min-height:76px;
  transition:min-height var(--ease) 240ms;
}
.site-header.is-scrolled .nav{min-height:64px;}
.logo{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.logo-mark{
  width:34px;height:34px;border-radius:9px;
  background:linear-gradient(135deg,var(--lime-500) 0%,var(--lime-600) 100%);
  position:relative;flex:0 0 auto;
}
.logo-mark::after{
  content:"";position:absolute;inset:9px;border-radius:3px;
  background:var(--ink-900);
}
.logo-text{
  display:block;color:#fff;font-weight:800;font-size:17px;
  letter-spacing:-.01em;line-height:1.25;white-space:nowrap;
}
.logo-text em{color:var(--lime-500);font-weight:900;padding:0 1px;}
.logo-sub{
  display:block;font-size:11px;letter-spacing:.14em;
  color:var(--ink-300);line-height:1.5;text-transform:uppercase;
}
.nav-links{display:flex;align-items:center;gap:32px;margin-left:auto;}
.nav-links a{
  position:relative;
  font-size:15px;font-weight:500;color:var(--ink-300);
  padding:6px 0;transition:color var(--ease) 200ms;
}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:-2px;
  width:0;height:2px;border-radius:2px;background:var(--lime-500);
  transform:translateX(-50%);
  transition:width var(--ease) 220ms;
}
.nav-links a:hover{color:#fff;}
.nav-links a:hover::after{width:20px;}
.nav-links a.is-active{color:#fff;font-weight:700;}
.nav-links a.is-active::after{width:20px;}
.nav-cta{margin-left:40px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);
  border:1px solid var(--deep-line);margin-left:auto;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;transition:transform var(--ease) 220ms,opacity var(--ease) 220ms;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(13,19,17,.55);
  opacity:0;visibility:hidden;transition:opacity var(--ease) 240ms,visibility var(--ease) 240ms;
  z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:320px;max-width:88vw;
  background:var(--paper-50);z-index:80;padding:24px;
  transform:translateX(102%);transition:transform var(--ease) 260ms;
  display:flex;flex-direction:column;gap:8px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.drawer-head .logo-text{color:var(--ink-900);font-size:15px;}
.drawer-head .logo-text em{color:var(--ink-900);}
.drawer-close{
  width:36px;height:36px;border-radius:var(--r-sm);border:1px solid var(--line);
  font-size:20px;line-height:1;color:var(--ink-800);background:var(--paper-0);
}
.drawer a.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 14px;border-radius:var(--r-sm);font-size:15px;font-weight:500;
  color:var(--ink-800);border:1px solid transparent;transition:background var(--ease) 200ms,border-color var(--ease) 200ms;
}
.drawer a.drawer-link:hover{background:var(--paper-100);}
.drawer a.drawer-link.is-active{background:var(--lime-100);border-color:rgba(198,242,78,.7);font-weight:700;}
.drawer .drawer-info{
  margin-top:auto;padding-top:20px;border-top:1px solid var(--line);
  font-size:13px;color:var(--ink-500);line-height:1.9;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-sm);
  font-size:15px;font-weight:700;letter-spacing:0;
  border:1.5px solid transparent;
  transition:background var(--ease) 220ms,color var(--ease) 220ms,border-color var(--ease) 220ms,transform var(--ease) 220ms,box-shadow var(--ease) 220ms;
}
.btn-primary{background:var(--lime-500);color:var(--ink-900);}
.btn-primary:hover{background:var(--lime-600);transform:translateY(-1px);box-shadow:0 10px 24px rgba(198,242,78,.28);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{border-color:var(--ink-900);color:var(--ink-900);background:transparent;}
.btn-ghost:hover{background:var(--ink-900);color:#fff;}
.btn-ghost-dark{border-color:#DCE5E0;color:#fff;background:transparent;}
.btn-ghost-dark:hover{background:#fff;color:var(--ink-900);border-color:#fff;}
.btn-lg{height:54px;padding:0 32px;font-size:16px;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:700;color:var(--ink-900);
  border-bottom:2px solid var(--lime-500);padding-bottom:3px;
  transition:border-color var(--ease) 200ms,gap var(--ease) 200ms;
}
.btn-text:hover{border-bottom-width:2px;border-color:var(--lime-600);gap:10px;}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;}
.btn[disabled]:hover{transform:none;box-shadow:none;background:var(--lime-500);}

/* ============ 标签 / 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:500;letter-spacing:.02em;
  background:var(--lime-100);color:var(--ink-900);
}
.badge-dark{background:transparent;border:1px solid rgba(198,242,78,.55);color:var(--lime-500);}
.badge-amber{background:rgba(255,184,107,.16);color:#B96A11;}
.badge-outline{background:transparent;border:1px solid var(--line);color:var(--ink-500);}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:500;letter-spacing:.02em;
  background:var(--paper-100);color:var(--ink-500);
}

/* ============ 分类头 Hero ============ */
.hero{
  position:relative;overflow:hidden;background:var(--ink-900);color:#fff;
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center 30%;
  opacity:.16;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(13,19,17,.97) 0%,rgba(13,19,17,.8) 52%,rgba(13,19,17,.55) 100%);
}
.hero-inner{position:relative;z-index:2;padding:34px 0 58px;}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-300);margin-bottom:26px;
}
.crumb a:hover{color:var(--lime-500);}
.crumb .sep{color:var(--ink-500);}
.crumb .current{color:#DCE5E0;max-width:34ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.hero-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:end;}
.hero-copy{grid-column:span 7;}
.hero-side{grid-column:span 5;}
.hero h1{
  font-size:clamp(30px,4.2vw,52px);font-weight:900;line-height:1.16;
  letter-spacing:-.02em;color:#fff;margin:18px 0 18px;
}
.hero h1 span{color:var(--lime-500);}
.hero-lead{
  font-size:17px;line-height:1.85;color:var(--ink-300);max-width:56ch;
}
.status-bar{
  display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;
}
.status-item{
  display:flex;align-items:center;gap:9px;
  padding:10px 16px;border-radius:var(--r-pill);
  border:1px solid var(--deep-line);background:rgba(255,255,255,.03);
  font-size:13px;color:#DCE5E0;
}
.pulse{
  width:8px;height:8px;border-radius:50%;background:var(--lime-500);
  box-shadow:0 0 0 0 rgba(198,242,78,.6);
  animation:pulse 2.4s infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(198,242,78,.55);}
  70%{box-shadow:0 0 0 10px rgba(198,242,78,0);}
  100%{box-shadow:0 0 0 0 rgba(198,242,78,0);}
}
.hero-search{position:relative;}
.hero-search .search-icon{
  position:absolute;left:16px;top:50%;transform:translateY(-50%);
  width:18px;height:18px;color:var(--ink-300);pointer-events:none;
}
.search-input{
  width:100%;height:52px;border-radius:var(--r-sm);
  border:1px solid var(--deep-line);background:rgba(255,255,255,.06);
  color:#fff;padding:0 18px 0 46px;font-size:15px;
  transition:border-color var(--ease) 200ms,box-shadow var(--ease) 200ms,background var(--ease) 200ms;
}
.search-input::placeholder{color:var(--ink-300);}
.search-input:focus{
  outline:none;border-color:var(--lime-500);background:rgba(255,255,255,.09);
  box-shadow:0 0 0 3px rgba(198,242,78,.22);
}
.search-hint{margin-top:12px;font-size:13px;color:var(--ink-300);}
.quick-terms{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.quick-terms a{
  font-size:12px;padding:5px 12px;border-radius:var(--r-pill);
  border:1px solid var(--deep-line);color:#DCE5E0;
  transition:border-color var(--ease) 200ms,color var(--ease) 200ms,background var(--ease) 200ms;
}
.quick-terms a:hover{border-color:var(--lime-500);color:var(--lime-500);background:rgba(198,242,78,.08);}

/* ============ 板块通用 ============ */
.section{padding:var(--sp-section) 0;}
.section-light{background:var(--paper-50);}
.section-paper{background:var(--paper-0);}
.section-dark{background:var(--ink-900);color:var(--dark-text);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{
  font-size:clamp(25px,2.9vw,38px);font-weight:900;line-height:1.22;
  letter-spacing:-.02em;color:var(--ink-900);position:relative;padding-left:18px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.28em;
  width:3px;height:12px;border-radius:2px;background:var(--lime-500);
}
.section-head p{margin-top:14px;font-size:16px;color:var(--ink-500);line-height:1.9;}
.section-dark .section-head h2{color:#fff;}
.section-dark .section-head p{color:var(--ink-300);}
.section-head-split{
  display:flex;align-items:flex-end;justify-content:space-between;gap:32px;
  max-width:none;margin-bottom:40px;
}
.section-head-split .section-head{margin-bottom:0;}

/* ============ FAQ 布局 ============ */
.faq-layout{
  display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:start;
}
.cat-col{grid-column:span 4;position:sticky;top:100px;}
.cat-panel{
  background:var(--paper-0);border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px;box-shadow:var(--shadow-1);
}
.cat-panel h3{font-size:15px;font-weight:800;color:var(--ink-900);margin-bottom:6px;}
.cat-panel .cat-note{font-size:13px;color:var(--ink-300);line-height:1.8;margin-bottom:14px;}
.cat-list li + li{margin-top:4px;}
.cat-btn{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 14px;border-radius:var(--r-sm);
  font-size:14px;font-weight:500;color:var(--ink-500);text-align:left;
  border-left:3px solid transparent;
  transition:background var(--ease) 200ms,color var(--ease) 200ms,border-color var(--ease) 200ms;
}
.cat-btn:hover{background:var(--paper-50);color:var(--ink-900);}
.cat-btn.is-active{background:var(--lime-100);color:var(--ink-900);font-weight:700;border-left-color:var(--lime-600);}
.cat-btn .count{font-size:12px;color:var(--ink-300);font-family:var(--font-num);}
.cat-btn.is-active .count{color:var(--ink-600);}
.cat-side-cta{
  margin-top:18px;padding:18px;border-radius:var(--r-md);
  background:var(--ink-900);color:#DCE5E0;
}
.cat-side-cta h4{font-size:15px;font-weight:800;color:#fff;margin-bottom:8px;}
.cat-side-cta p{font-size:13px;line-height:1.85;color:var(--ink-300);margin-bottom:14px;}
.cat-side-cta .btn{width:100%;height:44px;font-size:14px;}

.faq-col{grid-column:span 8;}
.faq-toolbar{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  margin-bottom:18px;
}
.faq-toolbar .result{font-size:13px;color:var(--ink-500);}
.faq-toolbar .result b{font-family:var(--font-num);color:var(--ink-900);}
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:var(--paper-0);border:1px solid var(--line);border-radius:var(--r-md);
  transition:border-color var(--ease) 220ms,box-shadow var(--ease) 220ms;
  overflow:hidden;
}
.faq-item:hover{box-shadow:var(--shadow-1);}
.faq-item.is-open{border-color:var(--ink-900);}
.faq-q{
  width:100%;display:flex;align-items:flex-start;gap:14px;
  padding:20px 22px;text-align:left;
  font-size:17px;font-weight:700;color:var(--ink-900);line-height:1.6;
}
.faq-q .idx{
  font-family:var(--font-num);font-size:13px;font-weight:700;color:var(--lime-600);
  padding-top:4px;flex:0 0 auto;
}
.faq-q .q-text{flex:1 1 auto;}
.faq-q .plus{
  position:relative;width:20px;height:20px;flex:0 0 auto;margin-top:4px;
  transition:transform var(--ease) 260ms;
}
.faq-q .plus::before,
.faq-q .plus::after{
  content:"";position:absolute;background:var(--ink-900);border-radius:2px;
}
.faq-q .plus::before{left:0;top:9px;width:20px;height:2px;}
.faq-q .plus::after{left:9px;top:0;width:2px;height:20px;}
.faq-item.is-open .plus{transform:rotate(45deg);}
.faq-a{
  display:grid;grid-template-rows:0fr;
  transition:grid-template-rows var(--ease) 260ms;
}
.faq-item.is-open .faq-a{grid-template-rows:1fr;}
.faq-a-inner{overflow:hidden;}
.faq-a-content{
  padding:0 22px 22px 58px;
  font-size:15.5px;line-height:1.85;color:var(--ink-500);
}
.faq-a-content p + p{margin-top:12px;}
.faq-a-content .meta{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:16px;
  padding-top:14px;border-top:1px dashed var(--line);
}
.faq-empty{
  display:none;text-align:center;padding:56px 24px;
  background:var(--paper-0);border:1px dashed var(--line);border-radius:var(--r-md);
}
.faq-empty.is-visible{display:block;}
.faq-empty svg{width:48px;height:48px;color:var(--ink-300);margin:0 auto 14px;}
.faq-empty p{font-size:15px;color:var(--ink-500);}

/* ============ 处理流程 ============ */
.flow-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.flow-intro{grid-column:span 4;}
.flow-intro h2{
  font-size:clamp(24px,2.7vw,34px);font-weight:900;line-height:1.25;
  color:#fff;letter-spacing:-.02em;position:relative;padding-left:18px;
}
.flow-intro h2::before{
  content:"";position:absolute;left:0;top:.28em;width:3px;height:12px;border-radius:2px;background:var(--lime-500);
}
.flow-intro p{margin-top:16px;font-size:15.5px;line-height:1.9;color:var(--ink-300);}
.flow-intro .btn{margin-top:24px;}
.flow-steps{grid-column:span 8;display:grid;gap:14px;}
.flow-step{
  display:grid;grid-template-columns:64px 1fr;gap:20px;align-items:start;
  padding:22px 24px;border-radius:var(--r-md);
  border:1px solid var(--deep-line);background:var(--ink-800);
  transition:border-color var(--ease) 240ms,transform var(--ease) 240ms;
}
.flow-step:hover{border-color:rgba(198,242,78,.35);transform:translateY(-3px);}
.flow-step .no{
  font-family:var(--font-num);font-size:32px;font-weight:900;color:var(--lime-500);line-height:1;
}
.flow-step h3{font-size:18px;font-weight:800;color:#fff;margin-bottom:8px;}
.flow-step p{font-size:15px;line-height:1.85;color:var(--ink-300);}
.flow-step .tag{margin-top:12px;background:rgba(255,255,255,.06);color:#DCE5E0;}

/* ============ 自助排查卡片 ============ */
.check-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:start;}
.check-media{grid-column:span 5;position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:var(--paper-100);}
.check-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform var(--ease) 400ms;}
.check-media:hover img{transform:scale(1.03);}
.check-media figcaption{
  position:absolute;left:16px;bottom:16px;right:16px;
  padding:12px 16px;border-radius:var(--r-sm);
  background:rgba(13,19,17,.78);color:#DCE5E0;font-size:13px;line-height:1.7;
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.check-list{grid-column:span 7;display:grid;gap:14px;}
.check-item{
  display:grid;grid-template-columns:44px 1fr;gap:18px;
  padding:20px 22px;border-radius:var(--r-md);
  background:var(--paper-0);border:1px solid var(--line);box-shadow:var(--shadow-1);
  transition:transform var(--ease) 240ms,box-shadow var(--ease) 240ms,border-color var(--ease) 240ms;
}
.check-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(198,242,78,.6);}
.check-item .ico{
  width:44px;height:44px;border-radius:var(--r-sm);
  background:var(--lime-100);display:flex;align-items:center;justify-content:center;
  color:var(--ink-900);font-family:var(--font-num);font-weight:900;font-size:15px;
}
.check-item h3{font-size:17px;font-weight:800;color:var(--ink-900);margin-bottom:6px;}
.check-item p{font-size:15px;color:var(--ink-500);line-height:1.85;}

/* ============ 表单 / 联系 ============ */
.contact-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:start;}
.form-card{
  grid-column:span 7;background:var(--paper-0);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:32px;box-shadow:var(--shadow-1);
}
.form-card h2{
  font-size:26px;font-weight:900;letter-spacing:-.02em;color:var(--ink-900);
  position:relative;padding-left:18px;line-height:1.3;
}
.form-card h2::before{
  content:"";position:absolute;left:0;top:.3em;width:3px;height:12px;border-radius:2px;background:var(--lime-500);
}
.form-card .form-note{margin-top:12px;font-size:15px;color:var(--ink-500);}
.form-body{margin-top:26px;display:grid;gap:18px;}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{display:grid;gap:8px;}
.field label{font-size:13px;font-weight:500;color:var(--ink-500);letter-spacing:.02em;}
.field label .req{color:var(--lime-600);font-weight:700;margin-left:2px;}
.field input,.field select,.field textarea{
  width:100%;min-height:48px;padding:12px 14px;
  background:var(--paper-50);border:1px solid var(--line);border-radius:var(--r-sm);
  font-size:15px;color:var(--ink-900);
  transition:border-color var(--ease) 200ms,box-shadow var(--ease) 200ms,background var(--ease) 200ms;
}
.field textarea{min-height:132px;resize:vertical;line-height:1.8;}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-300);}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;background:var(--paper-0);border-color:var(--lime-500);
  box-shadow:0 0 0 3px rgba(198,242,78,.25);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--danger);}
.field .err{display:none;font-size:12.5px;color:var(--danger);line-height:1.7;}
.field.has-error .err{display:block;}
.form-foot{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:4px;}
.form-foot .tip{font-size:13px;color:var(--ink-300);}
.form-alert{
  display:none;margin-top:18px;padding:14px 18px;border-radius:var(--r-sm);
  border:1px solid var(--lime-600);background:var(--lime-100);
  font-size:14px;color:var(--ink-900);line-height:1.8;
}
.form-alert.is-visible{display:block;}
.info-col{grid-column:span 5;display:grid;gap:16px;}
.info-card{
  background:var(--paper-0);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px;box-shadow:var(--shadow-1);
}
.info-card h3{font-size:18px;font-weight:800;color:var(--ink-900);margin-bottom:14px;}
.info-list{display:grid;gap:14px;}
.info-list li{display:grid;grid-template-columns:20px 1fr;gap:12px;font-size:14.5px;color:var(--ink-500);line-height:1.8;}
.info-list li .dot{width:8px;height:8px;border-radius:2px;background:var(--lime-500);margin-top:9px;}
.info-card-dark{background:var(--ink-900);border-color:var(--ink-800);color:var(--dark-text);}
.info-card-dark h3{color:#fff;}
.info-card-dark p{font-size:14.5px;color:var(--ink-300);line-height:1.85;}
.info-card-dark .rows{margin-top:18px;display:grid;gap:12px;}
.info-card-dark .row{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 14px;border-radius:var(--r-sm);border:1px solid var(--deep-line);
  font-size:14px;color:#DCE5E0;
}
.info-card-dark .row b{font-family:var(--font-num);color:var(--lime-500);font-weight:800;}
.info-card-dark .btn{width:100%;margin-top:18px;}

/* ============ 条状 CTA ============ */
.cta-band{
  position:relative;overflow:hidden;background:var(--ink-900);color:#fff;
  border-radius:var(--r-lg);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:18px 18px;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;
  border-radius:50%;background:radial-gradient(circle,rgba(198,242,78,.24),transparent 68%);
}
.cta-band-inner{
  position:relative;z-index:2;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  padding:34px 36px;
}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);font-weight:900;letter-spacing:-.01em;color:#fff;}
.cta-band p{margin-top:8px;font-size:14.5px;color:var(--ink-300);max-width:60ch;}
.cta-band .actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:#DCE5E0;border-top:1px solid var(--deep-line);margin-top:0;}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;
  padding:64px 0 40px;
}
.footer-col h4{
  font-size:13px;font-weight:500;letter-spacing:.12em;color:var(--ink-300);
  margin-bottom:16px;text-transform:uppercase;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col ul a{
  font-size:14px;color:#DCE5E0;
  transition:color var(--ease) 200ms;
}
.footer-col ul a:hover{
  color:var(--lime-500);
  text-decoration:underline;text-underline-offset:4px;
}
.footer-about .logo{margin-bottom:16px;}
.footer-about p{font-size:14px;line-height:1.9;color:var(--ink-300);max-width:34ch;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding:20px 0 28px;border-top:1px solid var(--deep-line);
  font-size:13px;color:var(--ink-300);
}

/* ============ 进入视口动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 520ms var(--ease),transform 520ms var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .hero-copy{grid-column:span 7;}
  .hero-side{grid-column:span 5;}
}
@media (max-width:1023px){
  :root{--sp-section:72px;}
  .nav-links,.nav-cta{display:none;}
  .nav-toggle{display:flex;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .hero-copy,.hero-side{grid-column:span 12;}
  .hero-side{margin-top:8px;}
  .cat-col{grid-column:span 12;position:static;}
  .faq-col{grid-column:span 12;}
  .flow-intro,.flow-steps{grid-column:span 12;}
  .check-media,.check-list{grid-column:span 12;}
  .form-card,.info-col{grid-column:span 12;}
}
@media (max-width:767px){
  :root{--sp-section:56px;}
  .container{padding:0 20px;}
  body{font-size:15.5px;}
  .logo-sub{display:none;}
  .hero-inner{padding:24px 0 44px;}
  .hero h1{font-size:31px;line-height:1.22;}
  .hero-lead{font-size:16px;}
  .status-item{padding:8px 12px;font-size:12.5px;}
  .section-head h2{font-size:26px;}
  .faq-q{padding:18px 18px;font-size:16px;}
  .faq-a-content{padding:0 18px 18px 18px;}
  .field-row{grid-template-columns:1fr;}
  .form-card{padding:22px;}
  .cta-band-inner{padding:26px 22px;}
  .footer-grid{grid-template-columns:1fr;padding:44px 0 28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .flow-step{grid-template-columns:1fr;gap:12px;padding:20px;}
  .flow-step .no{font-size:26px;}
}
@media (max-width:420px){
  .btn{width:100%;}
  .cta-band .actions{width:100%;}
  .btn-text{width:auto;}
  .form-foot .btn{width:100%;}
  .quick-terms a{font-size:11.5px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
}