/* roulang page: index */
:root{
  --ink:#0D0F13;
  --orange:#FF4D2E;
  --orange-dark:#E23C1E;
  --teal:#0E9F8C;
  --paper:#F6F5F1;
  --card:#FFFFFF;
  --muted:#EFEDE7;
  --line:#E4E1D8;
  --text:#1A1D22;
  --text-2:#5A5F66;
  --disabled:#B7B4AC;
  --success:#0E9F8C;
  --warn:#E0A400;
  --error:#D63A2F;
  --info:#3C4757;
  --r-card:14px;
  --r-sm:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(13,15,19,.05);
  --sh-2:0 14px 34px rgba(13,15,19,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --gap:104px;
  --container:1240px;
  --font:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-num:"Barlow Condensed","Inter","HarmonyOS Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease)}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--orange);outline-offset:2px;border-radius:4px;
}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:750;color:var(--ink);letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.container{max-width:var(--container);margin:0 auto;padding:0 40px;width:100%}
.section{padding:var(--gap) 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap}
.section-head .eyebrow{display:block;font-size:12px;letter-spacing:.14em;color:var(--orange);text-transform:uppercase;font-weight:650;margin-bottom:12px}
h2{font-size:clamp(26px,3.4vw,42px);line-height:1.2}
.section-head p{max-width:520px;color:var(--text-2);font-size:15px;line-height:1.75}
.text-link{display:inline-flex;align-items:center;gap:6px;font-weight:650;font-size:15px;color:var(--ink);border-bottom:2px solid transparent;padding-bottom:2px}
.text-link .arrow{transition:transform .22s var(--ease)}
.text-link:hover{color:var(--orange);border-color:var(--orange)}
.text-link:hover .arrow{transform:translateX(4px)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-pill);border:1px solid transparent;
  font-size:15px;font-weight:650;cursor:pointer;white-space:nowrap;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .16s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 1px 2px rgba(255,77,46,.28)}
.btn-primary:hover{background:var(--orange-dark);transform:translateY(-1px);box-shadow:0 10px 24px rgba(255,77,46,.26)}
.btn-ink{background:var(--ink);color:#fff}
.btn-ink:hover{background:#22262E;transform:translateY(-1px)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink);border-radius:var(--r-sm);padding:13px 24px}
.btn-ghost:hover{border-color:var(--ink);background:#fff}
.btn-soft{background:var(--muted);color:var(--ink)}
.btn-soft:hover{background:#E4E1D8}
.btn:active{transform:translateY(1px)}
.btn[disabled],.btn.is-disabled{background:var(--disabled);border-color:var(--disabled);color:#fff;cursor:not-allowed;box-shadow:none;transform:none;opacity:.85}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{width:100%}

/* ---------- badges ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:650;line-height:1;padding:7px 12px;border-radius:6px;letter-spacing:.04em}
.badge-soft{background:var(--muted);color:var(--text-2)}
.badge-orange{background:rgba(255,77,46,.10);color:var(--orange-dark)}
.badge-teal{background:rgba(14,159,140,.12);color:#0A7A6B}
.badge-pill{border-radius:var(--r-pill)}
.trust-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.trust-row .badge{border:1px solid var(--line);background:#fff;color:var(--text-2)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(246,245,241,.94);
  border-bottom:1px solid transparent;backdrop-filter:blur(6px);
  transition:background-color .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{background:rgba(246,245,241,.90);border-bottom-color:var(--line);box-shadow:0 2px 14px rgba(13,15,19,.05)}
.header-inner{display:flex;align-items:center;gap:22px;height:72px;transition:height .24s var(--ease)}
.site-header.is-scrolled .header-inner{height:58px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:32px;height:32px;border-radius:9px;background:var(--ink);color:#fff;
  display:grid;place-items:center;font-weight:800;font-size:16px;letter-spacing:0;
}
.brand-text{font-weight:800;font-size:17px;color:var(--ink);letter-spacing:-.01em;white-space:nowrap}
.nav-chips{display:flex;align-items:center;gap:8px;flex:1 1 auto;overflow-x:auto;scrollbar-width:none;padding:4px 2px}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  padding:9px 16px;border-radius:var(--r-pill);border:1px solid var(--line);
  background:transparent;color:var(--text-2);font-size:14px;font-weight:600;white-space:nowrap;
  transition:all .2s var(--ease);
}
.chip:hover{border-color:var(--ink);color:var(--ink)}
.chip.is-active{background:var(--ink);border-color:var(--ink);color:#fff}
.chip.is-active::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--orange);display:inline-block}
.chip:active{transform:translateY(1px)}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:#fff;cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:16px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:16px;height:2px;background:var(--ink);border-radius:2px}
.nav-toggle span::before{top:-5px}
.nav-toggle span::after{top:5px}
.nav-toggle:hover{border-color:var(--ink)}
.drawer{
  position:fixed;inset:0;z-index:90;background:rgba(13,15,19,.42);
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);
}
.drawer.is-open{opacity:1;visibility:visible}
.drawer-panel{
  position:absolute;right:0;top:0;height:100%;width:min(320px,86vw);background:#fff;
  padding:24px 22px;display:flex;flex-direction:column;gap:10px;
  transform:translateX(100%);transition:transform .28s var(--ease);overflow-y:auto;
}
.drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer-title{font-size:13px;letter-spacing:.12em;color:var(--text-2);font-weight:650;margin:6px 0 4px}
.drawer-link{display:block;padding:13px 14px;border-radius:var(--r-sm);border:1px solid var(--line);font-weight:600;font-size:15px}
.drawer-link:hover{border-color:var(--ink);background:var(--paper)}
.drawer-close{align-self:flex-end;width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;font-size:18px;line-height:1}
.drawer-close:hover{border-color:var(--ink)}

/* ---------- hero ---------- */
.hero{padding:72px 0 96px;position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center}
.hero h1{font-size:clamp(34px,5vw,62px);font-weight:800;line-height:1.08;letter-spacing:-.02em}
.hero h1 em{font-style:normal;color:var(--orange)}
.hero .lead{font-size:18px;line-height:1.75;color:var(--text-2);margin-top:22px;max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-metrics{display:flex;gap:34px;margin-top:44px;flex-wrap:wrap}
.hero-metrics .metric b{font-family:var(--font-num);font-size:32px;font-weight:700;color:var(--ink);letter-spacing:.01em}
.hero-metrics .metric span{display:block;font-size:13px;color:var(--text-2)}
.hero-visual{position:relative;border-radius:20px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-2);aspect-ratio:4/3}
.hero-visual img{width:100%;height:100%;object-fit:cover}
.hero-visual::after{content:"";position:absolute;inset:0;background:rgba(13,15,19,.10)}
.hero-float{
  position:absolute;left:22px;bottom:22px;right:22px;z-index:2;background:rgba(255,255,255,.94);
  border-radius:var(--r-card);padding:16px 18px;display:flex;align-items:center;gap:14px;
  border:1px solid rgba(228,225,216,.9);
}
.hero-float .dot-live{width:10px;height:10px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 4px rgba(14,159,140,.16);flex:0 0 auto}
.hero-float strong{font-size:15px;color:var(--ink);display:block}
.hero-float small{font-size:12.5px;color:var(--text-2)}

/* ---------- feature list (numbered rows) ---------- */
.feature-list{max-width:880px;border-top:1px solid var(--line)}
.feature-item{display:grid;grid-template-columns:118px 1fr;gap:28px;padding:34px 0;border-bottom:1px solid var(--line);transition:padding-left .24s var(--ease)}
.feature-item:hover{padding-left:8px}
.feature-num{font-family:var(--font-num);font-size:64px;line-height:1;font-weight:700;color:transparent;-webkit-text-stroke:1.4px var(--orange);letter-spacing:.02em}
.feature-item:hover .feature-num{color:var(--orange);-webkit-text-stroke:1.4px var(--orange)}
.feature-item h3{font-size:21px;font-weight:650;margin-bottom:10px}
.feature-item p{color:var(--text-2);font-size:15.5px;max-width:620px}
.feature-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}

/* ---------- scenarios ---------- */
.scene-grid{display:grid;grid-template-columns:1.35fr .85fr;gap:24px;align-items:stretch}
.scene-main{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:#fff;display:flex;flex-direction:column;box-shadow:var(--sh-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease)}
.scene-main:hover{transform:translateY(-4px);border-color:var(--ink);box-shadow:var(--sh-2)}
.scene-main img{width:100%;aspect-ratio:16/9;object-fit:cover}
.scene-main .scene-body{padding:26px 28px 30px}
.scene-body h3{font-size:21px;margin-bottom:10px}
.scene-body p{color:var(--text-2);font-size:15px}
.scene-side{display:grid;gap:24px}
.scene-mini{border:1px solid var(--line);border-radius:var(--r-card);background:#fff;padding:24px;display:flex;gap:18px;align-items:flex-start;box-shadow:var(--sh-1);transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease)}
.scene-mini:hover{transform:translateY(-4px);border-color:var(--ink);box-shadow:var(--sh-2)}
.scene-mini img{width:88px;height:88px;border-radius:var(--r-sm);object-fit:cover;flex:0 0 auto}
.scene-mini h3{font-size:17px;margin-bottom:6px}
.scene-mini p{font-size:14.5px;color:var(--text-2);margin-bottom:8px}
.scene-link{display:inline-flex;align-items:center;gap:5px;font-size:14px;font-weight:650;color:var(--orange-dark)}
.scene-link .arrow{transition:transform .22s var(--ease)}
.scene-mini:hover .scene-link .arrow,.scene-main:hover .scene-link .arrow{transform:translateX(4px)}

/* ---------- proof / cases ---------- */
.proof{display:grid;grid-template-columns:1.25fr .75fr;gap:56px;align-items:start}
.quote{font-size:clamp(22px,2.6vw,32px);font-weight:500;line-height:1.45;color:var(--ink);letter-spacing:-.01em}
.quote::before{content:"“";display:block;font-size:64px;line-height:.6;color:var(--orange);font-family:var(--font-num);margin-bottom:12px}
.quote-from{margin-top:20px;font-size:14px;color:var(--text-2);display:flex;align-items:center;gap:8px}
.quote-from::before{content:"";width:26px;height:2px;background:var(--orange);display:inline-block}
.stats{display:grid;gap:22px;border-left:1px solid var(--line);padding-left:34px}
.stat b{font-family:var(--font-num);font-size:44px;font-weight:700;color:var(--ink);line-height:1}
.stat span{display:block;font-size:13.5px;color:var(--text-2);margin-top:6px}
.case-scroll{display:flex;gap:20px;overflow-x:auto;padding:40px 0 10px;scroll-snap-type:x mandatory;scrollbar-width:thin}
.case-card{
  flex:0 0 300px;scroll-snap-align:start;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.case-card:hover{transform:translateY(-4px);border-color:var(--ink);box-shadow:var(--sh-2)}
.case-icon{width:42px;height:42px;border-radius:12px;background:var(--muted);display:grid;place-items:center;font-family:var(--font-num);font-weight:700;color:var(--orange-dark);margin-bottom:16px}
.case-card h3{font-size:17px;margin-bottom:8px}
.case-card p{font-size:14.5px;color:var(--text-2);margin-bottom:14px}

/* ---------- pricing ---------- */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:stretch}
.plan{border:1px solid var(--line);border-radius:var(--r-card);background:#fff;padding:30px 28px;display:flex;flex-direction:column;box-shadow:var(--sh-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease)}
.plan:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--ink)}
.plan.is-featured{background:var(--ink);border-color:var(--ink);color:#fff;box-shadow:var(--sh-2)}
.plan.is-featured h3,.plan.is-featured .plan-price b{color:#fff}
.plan.is-featured .plan-desc,.plan.is-featured .plan-list li{color:rgba(255,255,255,.74)}
.plan.is-featured .plan-list li::before{color:var(--orange)}
.plan h3{font-size:20px;margin-bottom:8px}
.plan-desc{font-size:14px;color:var(--text-2);min-height:44px}
.plan-price{display:flex;align-items:flex-end;gap:6px;margin:18px 0 22px}
.plan-price b{font-family:var(--font-num);font-size:44px;line-height:1;font-weight:700;color:var(--ink)}
.plan-price span{font-size:13px;color:var(--text-2)}
.plan-list{display:grid;gap:12px;margin-bottom:26px}
.plan-list li{display:flex;gap:10px;font-size:14.5px;color:var(--text-2);align-items:flex-start}
.plan-list li::before{content:"✓";color:var(--teal);font-weight:800;flex:0 0 auto}
.plan .btn{margin-top:auto}
.compare-wrap{margin-top:48px;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:#fff}
table.compare{width:100%;border-collapse:collapse;font-size:14.5px}
table.compare th,table.compare td{padding:16px 20px;text-align:left;border-bottom:1px solid var(--line)}
table.compare thead th{background:var(--muted);font-size:13px;letter-spacing:.06em;color:var(--text-2);font-weight:650}
table.compare tbody tr:nth-child(even){background:#FBFAF7}
table.compare tbody tr:last-child td{border-bottom:0}
table.compare td:first-child{font-weight:650;color:var(--ink)}
.tick{color:var(--teal);font-weight:800}
.cross{color:var(--disabled);font-weight:800}

/* ---------- news / cms ---------- */
.filter-row{display:flex;gap:8px;overflow-x:auto;padding-bottom:6px;margin-bottom:32px;scrollbar-width:none}
.filter-row::-webkit-scrollbar{display:none}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);display:flex}
.news-card:hover{transform:translateY(-4px);border-color:var(--ink);box-shadow:var(--sh-2)}
.news-card-link{display:flex;flex-direction:column;width:100%}
.news-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--muted)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-title{font-size:17px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-excerpt{font-size:14px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--text-2);margin-top:auto}
.news-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--disabled)}
.news-meta .arrow{margin-left:auto;color:var(--orange-dark);font-weight:700;transition:transform .22s var(--ease)}
.news-card:hover .news-meta .arrow{transform:translateX(4px)}
.empty-state{border:1px dashed var(--line);border-radius:var(--r-card);background:#fff;text-align:center;padding:64px 24px}
.empty-icon{font-size:34px;color:var(--orange);margin-bottom:12px}
.empty-state p{color:var(--text-2);font-size:15px;margin-bottom:20px}
.empty-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* ---------- faq ---------- */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-item{border-top:1px solid var(--line)}
.faq-item:last-child{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 4px;font-size:20px;font-weight:600;color:var(--ink);transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--orange-dark)}
.faq-item summary .sign{position:relative;width:20px;height:20px;flex:0 0 auto}
.faq-item summary .sign::before,.faq-item summary .sign::after{content:"";position:absolute;background:var(--orange);border-radius:2px;transition:transform .22s var(--ease),opacity .22s var(--ease)}
.faq-item summary .sign::before{left:0;top:9px;width:20px;height:2px}
.faq-item summary .sign::after{left:9px;top:0;width:2px;height:20px}
.faq-item[open] summary .sign::after{transform:rotate(90deg);opacity:0}
.faq-answer{padding:0 4px 26px;color:var(--text-2);font-size:15.5px;line-height:1.85;max-width:760px}

/* ---------- cta ---------- */
.cta-band{background:var(--ink);color:#fff;padding:88px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-band h2{color:#fff;font-size:clamp(24px,3vw,38px);max-width:620px}
.cta-band p{color:rgba(255,255,255,.68);font-size:15px;margin-top:14px;max-width:560px}
.cta-side{display:flex;flex-direction:column;gap:14px;align-items:flex-start}
.cta-side small{color:rgba(255,255,255,.55);font-size:13px}

/* ---------- footer ---------- */
.site-footer{background:var(--muted);color:var(--text);padding:72px 0 0;border-top:1px solid var(--line)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:52px}
.footer-brand .brand-text{font-size:18px}
.footer-brand p{color:var(--text-2);font-size:14px;margin:16px 0 20px;max-width:300px}
.footer-social{display:flex;gap:10px}
.social-dot{width:38px;height:38px;border-radius:11px;border:1px solid var(--line);background:#fff;display:grid;place-items:center;font-size:13px;font-weight:650;color:var(--text-2)}
.social-dot:hover{border-color:var(--ink);color:var(--ink)}
.footer-col h4{font-size:13px;letter-spacing:.1em;color:var(--text-2);font-weight:650;margin-bottom:16px}
.footer-col ul{display:grid;gap:11px}
.footer-col a{font-size:14.5px;color:var(--text-2)}
.footer-col a:hover{color:var(--orange-dark)}
.footer-form{display:grid;gap:10px;margin-top:14px}
.footer-form label{font-size:13px;color:var(--text-2)}
.footer-form input{
  height:48px;border-radius:var(--r-sm);border:1px solid var(--line);background:#fff;
  padding:0 14px;font-size:14.5px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.footer-form input::placeholder{color:var(--disabled)}
.footer-form input:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 2px rgba(255,77,46,.55)}
.footer-form .hint{font-size:12.5px;color:var(--text-2)}
.footer-bottom{border-top:1px solid var(--line);padding:22px 0 26px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--text-2)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  :root{--gap:84px}
  .container{padding:0 28px}
  .news-grid{grid-template-columns:repeat(3,1fr);gap:20px}
  .hero-grid{gap:44px}
}
@media (max-width:1023px){
  :root{--gap:72px}
  .header-inner{height:auto;flex-wrap:wrap;padding:12px 0 0;row-gap:10px}
  .site-header.is-scrolled .header-inner{height:auto}
  .nav-chips{order:3;width:100%;flex:1 0 100%;padding:4px 0 12px;
    -webkit-mask-image:linear-gradient(90deg,#000 0,#000 92%,transparent 100%);
    mask-image:linear-gradient(90deg,#000 0,#000 92%,transparent 100%)}
  .nav-toggle{display:inline-flex}
  .header-actions .btn-header-cta{display:none}
  .hero{padding:48px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-visual{aspect-ratio:16/10}
  .feature-item{grid-template-columns:92px 1fr;gap:20px;padding:28px 0}
  .feature-num{font-size:52px}
  .scene-grid{grid-template-columns:1fr}
  .proof{grid-template-columns:1fr;gap:36px}
  .stats{border-left:0;border-top:1px solid var(--line);padding-left:0;padding-top:26px;grid-template-columns:repeat(3,1fr)}
  .plan-grid{grid-template-columns:1fr;max-width:520px}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-inner{flex-direction:column;align-items:flex-start}
}
@media (max-width:767px){
  :root{--gap:52px}
  .container{padding:0 20px}
  body{font-size:15.5px}
  .section-head{margin-bottom:30px}
  .hero-actions .btn{width:100%}
  .hero-metrics{gap:22px}
  .feature-item{grid-template-columns:1fr;gap:10px}
  .feature-num{font-size:44px}
  .scene-mini{flex-direction:column}
  .scene-mini img{width:100%;height:150px}
  .stats{grid-template-columns:1fr 1fr}
  .news-grid{grid-template-columns:1fr}
  .news-card-link{flex-direction:row;align-items:stretch}
  .news-thumb{width:112px;flex:0 0 112px;aspect-ratio:auto}
  .news-body{padding:16px}
  .news-excerpt{-webkit-line-clamp:2}
  .faq-item summary{font-size:17.5px;padding:20px 2px}
  .cta-band{padding:60px 0}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:36px}
  table.compare thead{display:none}
  table.compare,table.compare tbody,table.compare tr,table.compare td{display:block;width:100%}
  table.compare tr{border-bottom:1px solid var(--line);padding:8px 0}
  table.compare td{border-bottom:0;padding:8px 20px}
  table.compare td:first-child{font-size:13px;letter-spacing:.06em;color:var(--text-2);text-transform:none}
}
@media (max-width:420px){
  .hero h1{font-size:32px}
  h2{font-size:24px}
  .quote{font-size:20px}
  .brand-text{font-size:15.5px}
}
@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}
}

/* roulang page: article */
:root{
  --ink:#0D0F13;
  --ink-soft:#1A1D23;
  --orange:#FF4D2E;
  --orange-deep:#E23C1F;
  --teal:#0E9F8C;
  --paper:#F6F5F1;
  --white:#FFFFFF;
  --muted-surface:#EFEDE7;
  --line:#E4E1D8;
  --text-1:#0D0F13;
  --text-2:#5A5F66;
  --text-3:#8B8F95;
  --disabled:#B7B4AC;
  --warn:#E0A400;
  --danger:#D63A2F;
  --radius-card:14px;
  --radius-img:10px;
  --radius-btn:999px;
  --radius-sm:10px;
  --shadow-1:0 1px 2px rgba(13,15,19,.05);
  --shadow-2:0 14px 34px rgba(13,15,19,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1240px;
  --gap-section:104px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  color:var(--text-1);
  background:var(--paper);
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:4px}
::selection{background:var(--orange);color:#fff}

.container{max-width:var(--container);margin:0 auto;padding:0 40px;width:100%}

/* ============ 通用按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--radius-btn);
  border:1px solid transparent;font-size:15px;font-weight:650;line-height:1;
  cursor:pointer;transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .16s var(--ease),box-shadow .22s var(--ease);
  white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--orange);color:#fff}
.btn-primary:hover{background:var(--orange-deep)}
.btn-ink{background:var(--ink);color:#fff}
.btn-ink:hover{background:#000}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink);border-radius:var(--radius-sm)}
.btn-ghost:hover{border-color:var(--ink);background:var(--white)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{background:var(--disabled);color:#fff;cursor:not-allowed;pointer-events:none}
.btn.is-loading{position:relative;color:transparent;pointer-events:none}
.btn.is-loading::after{
  content:"";position:absolute;width:16px;height:16px;border-radius:50%;
  border:2px solid rgba(255,255,255,.45);border-top-color:#fff;animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:650;color:var(--ink);
  transition:color .2s var(--ease);
}
.link-arrow .arw{transition:transform .22s var(--ease)}
.link-arrow:hover{color:var(--orange)}
.link-arrow:hover .arw{transform:translateX(4px)}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(246,245,241,.92);
  border-bottom:1px solid transparent;backdrop-filter:blur(6px);
  transition:padding .24s var(--ease),border-color .24s var(--ease),background .24s var(--ease);
}
.site-header.is-compact{background:rgba(246,245,241,.96);border-bottom-color:var(--line)}
.header-inner{
  display:flex;align-items:center;gap:24px;padding-top:18px;padding-bottom:18px;
  transition:padding .24s var(--ease);
}
.site-header.is-compact .header-inner{padding-top:9px;padding-bottom:9px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--ink);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-weight:800;font-size:17px;
  letter-spacing:0;
}
.brand-text{font-weight:800;font-size:18px;letter-spacing:-.01em}
.nav-chips{
  display:flex;align-items:center;gap:8px;margin-left:8px;flex:1 1 auto;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 18px,#000 calc(100% - 18px),transparent 100%);
  mask-image:linear-gradient(90deg,transparent 0,#000 18px,#000 calc(100% - 18px),transparent 100%);
}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;gap:7px;flex:0 0 auto;
  padding:9px 16px;border-radius:var(--radius-btn);border:1px solid var(--line);
  font-size:14px;font-weight:600;color:var(--text-2);background:transparent;
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.chip:hover{border-color:var(--ink);color:var(--ink)}
.chip.is-active{background:var(--ink);border-color:var(--ink);color:#fff}
.chip.is-active::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--orange)}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:12px;border:1px solid var(--line);
  background:var(--white);cursor:pointer;position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:11px;width:18px;height:2px;background:var(--ink);border-radius:2px;
  transition:transform .24s var(--ease),opacity .2s var(--ease);
}
.nav-toggle span{top:19px}
.nav-toggle span::before{left:0;top:-6px}
.nav-toggle span::after{left:0;top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}
.mobile-drawer{
  display:none;border-bottom:1px solid var(--line);background:var(--white);
}
.mobile-drawer.is-open{display:block}
.mobile-drawer .container{padding-top:14px;padding-bottom:18px}
.mobile-drawer a{
  display:block;padding:13px 0;border-bottom:1px solid var(--line);font-weight:600;color:var(--text-1);
}
.mobile-drawer a:last-of-type{border-bottom:0}
.mobile-drawer .btn{margin-top:14px}

/* ============ 面包屑 ============ */
.breadcrumb-bar{padding:26px 0 0}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.breadcrumb a{color:var(--text-2);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--orange)}
.breadcrumb .sep{color:var(--line)}
.breadcrumb .current{color:var(--text-3)}

/* ============ 文章头 ============ */
.article-hero{padding:34px 0 12px}
.article-hero-inner{max-width:880px}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:6px;
  font-size:12px;font-weight:650;letter-spacing:.08em;background:rgba(255,77,46,.1);color:var(--orange-deep);
}
.badge-teal{background:rgba(14,159,140,.12);color:#0B7A6C}
.badge-soft{background:var(--muted-surface);color:var(--text-2);letter-spacing:.06em}
.article-title{margin-top:18px;font-size:clamp(30px,4.4vw,50px);font-weight:800;line-height:1.1;letter-spacing:-.02em}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:20px;
  font-size:13px;color:var(--text-2);
}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--line)}
.article-lead{
  margin-top:22px;font-size:18px;line-height:1.75;color:var(--text-2);max-width:760px;
}

/* ============ 主体布局 ============ */
.layout{
  display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:56px;
  align-items:start;padding:48px 0 20px;
}
.article-surface{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:56px 60px;box-shadow:var(--shadow-1);
}
.article-body{max-width:720px;margin:0 auto;font-size:16px;line-height:1.85;color:#22262c}
.article-body > * + *{margin-top:1.4em}
.article-body p{margin:0}
.article-body h2{
  margin-top:2.4em;font-size:clamp(22px,2.4vw,29px);font-weight:750;line-height:1.3;letter-spacing:-.01em;color:var(--text-1);
}
.article-body h3{margin-top:1.8em;font-size:20px;font-weight:650;line-height:1.4;color:var(--text-1)}
.article-body h2 + p,.article-body h3 + p{margin-top:.7em}
.article-body strong{font-weight:700;color:var(--text-1)}
.article-body a{color:var(--orange-deep);border-bottom:1px solid rgba(255,77,46,.35);transition:border-color .2s var(--ease)}
.article-body a:hover{border-bottom-color:var(--orange)}
.article-body ul,.article-body ol{padding-left:0;display:grid;gap:.6em}
.article-body ul li,.article-body ol li{position:relative;padding-left:26px}
.article-body ul li::before{
  content:"";position:absolute;left:6px;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--orange);
}
.article-body ol{counter-reset:olc}
.article-body ol li::before{
  counter-increment:olc;content:counter(olc);position:absolute;left:0;top:0;
  font-family:"Barlow Condensed","Inter",sans-serif;font-size:15px;font-weight:700;color:var(--orange);
}
.article-body blockquote{
  margin-left:0;margin-right:0;padding:18px 22px;border-left:3px solid var(--orange);
  background:var(--paper);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text-2);
}
.article-body blockquote p{margin:0}
.article-body img{border-radius:var(--radius-img);border:1px solid var(--line)}
.article-body figure{margin:1.8em 0}
.article-body figcaption{
  margin-top:10px;font-size:13px;color:var(--text-3);text-align:center;
}
.article-body table{
  width:100%;border-collapse:collapse;font-size:15px;border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden;
}
.article-body thead th{background:var(--muted-surface);font-weight:650;text-align:left}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line)}
.article-body tbody tr:nth-child(even){background:#FBFAF7}
.article-body tbody tr:last-child td{border-bottom:0}
.article-body code{
  font-family:"Barlow Condensed","Inter",ui-monospace,monospace;font-size:14px;
  background:var(--muted-surface);padding:2px 7px;border-radius:6px;
}
.article-body pre{
  background:var(--ink);color:#EDEDEA;padding:20px 22px;border-radius:var(--radius-sm);overflow:auto;font-size:14px;line-height:1.7;
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}

/* 空态 */
.empty-state{
  text-align:center;padding:70px 24px;border:1px dashed var(--line);border-radius:var(--radius-card);background:var(--paper);
}
.empty-state .empty-icon{
  width:56px;height:56px;margin:0 auto 18px;border-radius:16px;background:var(--muted-surface);
  display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--text-3);
}
.empty-state h2{font-size:22px;font-weight:700}
.empty-state p{margin-top:10px;color:var(--text-2);font-size:15px}
.empty-state .btn{margin-top:22px}

/* ============ 侧栏 ============ */
.sidebar{position:sticky;top:96px;display:grid;gap:18px}
.side-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-1);
}
.side-card h4{font-size:15px;font-weight:700;letter-spacing:.02em}
.side-card .side-sub{margin-top:12px;font-size:14px;color:var(--text-2);line-height:1.7}
.side-list{margin-top:14px;display:grid;gap:2px}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 0;border-bottom:1px solid var(--line);font-size:14px;font-weight:600;color:var(--text-1);
  transition:color .2s var(--ease);
}
.side-list a:last-child{border-bottom:0}
.side-list a:hover{color:var(--orange)}
.side-list a .arw{color:var(--text-3);transition:transform .22s var(--ease)}
.side-list a:hover .arw{transform:translateX(4px);color:var(--orange)}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.chip-mini{
  padding:7px 13px;border-radius:var(--radius-btn);border:1px solid var(--line);
  font-size:13px;font-weight:600;color:var(--text-2);transition:all .2s var(--ease);
}
.chip-mini:hover{border-color:var(--ink);color:var(--ink)}

/* ============ 结尾导航 ============ */
.article-foot{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
  margin-top:44px;padding-top:26px;border-top:1px solid var(--line);
}
.pager{display:flex;flex-wrap:wrap;gap:12px}
.pager a{
  display:inline-flex;align-items:center;gap:8px;padding:11px 18px;border-radius:var(--radius-btn);
  border:1px solid var(--line);font-size:14px;font-weight:600;background:var(--white);
  transition:border-color .2s var(--ease),color .2s var(--ease),transform .18s var(--ease);
}
.pager a:hover{border-color:var(--ink);transform:translateY(-2px)}

/* ============ 相关推荐 ============ */
.section{padding:var(--gap-section) 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:38px}
.section-head h2{font-size:clamp(26px,3.4vw,42px);font-weight:750;line-height:1.2;letter-spacing:-.02em}
.section-head .section-sub{margin-top:12px;font-size:16px;color:var(--text-2);max-width:560px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px}
.card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);display:flex;flex-direction:column;
  transition:transform .26s var(--ease),border-color .26s var(--ease),box-shadow .26s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:var(--ink);box-shadow:var(--shadow-2)}
.card-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--muted-surface)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-media .badge{position:absolute;left:14px;top:14px;background:rgba(255,255,255,.92);color:var(--ink)}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:19px;font-weight:650;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{font-size:14.5px;color:var(--text-2);line-height:1.7;
  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;font-size:13px;color:var(--text-3)}

/* ============ CTA ============ */
.cta-band{background:var(--ink);color:#fff;padding:88px 0}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:32px}
.cta-inner h2{font-size:clamp(26px,3.4vw,40px);font-weight:750;line-height:1.2;letter-spacing:-.02em;max-width:620px}
.cta-inner p{margin-top:14px;color:#B9BDC4;font-size:15px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-band .link-arrow{color:#E6E6E3}
.cta-band .link-arrow:hover{color:var(--orange)}

/* ============ 页脚 ============ */
.site-footer{background:var(--muted-surface);border-top:1px solid var(--line);padding:72px 0 0;color:var(--text-1)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:52px}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-2);max-width:320px;line-height:1.75}
.footer-social{display:flex;gap:10px;margin-top:20px}
.social-dot{
  padding:8px 14px;border-radius:var(--radius-btn);border:1px solid var(--line);background:var(--white);
  font-size:13px;font-weight:600;color:var(--text-2);transition:all .2s var(--ease);
}
.social-dot:hover{border-color:var(--ink);color:var(--ink)}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--text-2);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--orange-deep)}
.footer-form{display:grid;gap:8px;margin-top:6px}
.footer-form label{font-size:13px;color:var(--text-2)}
.footer-form input{
  height:48px;border-radius:var(--radius-sm);border:1px solid var(--line);background:var(--white);
  padding:0 14px;font-size:14px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.footer-form input::placeholder{color:var(--text-3)}
.footer-form input:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 2px rgba(255,77,46,.35)}
.footer-form input.is-error{border-color:var(--danger);box-shadow:0 0 0 2px rgba(214,58,47,.16)}
.footer-form .hint{font-size:12.5px;color:var(--text-3)}
.footer-form .err{font-size:13px;color:var(--danger);display:none}
.footer-form .err.is-show{display:block}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;display:flex;flex-wrap:wrap;gap:10px;
  align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3);
}

/* ============ 滚动入场 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  :root{--gap-section:82px}
  .container{padding:0 28px}
  .layout{grid-template-columns:minmax(0,1fr) 250px;gap:36px}
  .article-surface{padding:46px 40px}
}
@media (max-width:1023px){
  :root{--gap-section:72px}
  .nav-chips{display:none}
  .nav-toggle{display:block}
  .btn-header-cta{display:none}
  .layout{grid-template-columns:minmax(0,1fr)}
  .sidebar{position:static;grid-template-columns:repeat(2,minmax(0,1fr));display:grid}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:34px}
}
@media (max-width:767px){
  :root{--gap-section:52px}
  .container{padding:0 20px}
  .brand-text{font-size:16px}
  .header-inner{gap:14px;padding-top:12px;padding-bottom:12px}
  .article-surface{padding:32px 22px;border-radius:12px}
  .article-lead{font-size:16.5px}
  .sidebar{grid-template-columns:minmax(0,1fr)}
  .grid-3{grid-template-columns:minmax(0,1fr)}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px}
  .cta-band{padding:60px 0}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;padding-bottom:36px}
  .article-foot{flex-direction:column;align-items:flex-start}
}
@media (max-width:420px){
  body{font-size:15.5px}
  .article-title{font-size:26px}
  .article-surface{padding:26px 18px}
  .btn{padding:13px 22px;font-size:14px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --ink:#0D0F13;
  --orange:#FF4D2E;
  --orange-deep:#E63F22;
  --teal:#0E9F8C;
  --paper:#F6F5F1;
  --card:#FFFFFF;
  --soft:#EFEDE7;
  --line:#E4E1D8;
  --text-2:#5A5F66;
  --muted:#B7B4AC;
  --ok:#0E9F8C;
  --warn:#E0A400;
  --err:#D63A2F;
  --info:#3C4757;
  --r-card:14px;
  --r-img:10px;
  --r-btn:999px;
  --sh-1:0 1px 2px rgba(13,15,19,.05);
  --sh-2:0 14px 34px rgba(13,15,19,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec:104px;
  --container:1240px;
  --font-sans:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Barlow Condensed","Inter","HarmonyOS Sans SC","PingFang SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease)}
a:hover{color:var(--orange)}
button,input{font:inherit;color:inherit}
button{cursor:pointer}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 40px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(246,245,241,.88);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .24s var(--ease),background-color .24s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line)}
.header-inner{display:flex;align-items:center;gap:22px;height:72px;transition:height .24s var(--ease)}
.site-header.is-scrolled .header-inner{height:58px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;font-weight:800}
.brand-mark{
  width:32px;height:32px;border-radius:10px;background:var(--ink);color:#fff;
  display:grid;place-items:center;font-size:15px;font-weight:800;letter-spacing:0;
  transition:background-color .2s var(--ease),transform .2s var(--ease);
}
.brand:hover .brand-mark{background:var(--orange);transform:translateY(-1px)}
.brand-text{font-size:17px;letter-spacing:-.01em;white-space:nowrap}
.nav-chips{
  display:flex;align-items:center;gap:8px;flex:1 1 auto;min-width:0;
  overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch;
  mask-image:linear-gradient(90deg,#000 88%,transparent);
  -webkit-mask-image:linear-gradient(90deg,#000 88%,transparent);
  padding:4px 2px;
}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;gap:6px;flex:0 0 auto;
  padding:8px 15px;border:1px solid var(--line);border-radius:var(--r-btn);
  font-size:13.5px;line-height:1.4;color:var(--text-2);white-space:nowrap;
  transition:border-color .18s var(--ease),color .18s var(--ease),background-color .18s var(--ease);
}
.chip::before{content:"";width:6px;height:6px;border-radius:50%;background:transparent;transition:background-color .18s var(--ease)}
.chip:hover{border-color:var(--ink);color:var(--ink)}
.chip.is-active{background:var(--ink);border-color:var(--ink);color:#fff}
.chip.is-active::before{background:var(--orange)}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;
  background:#fff;position:relative;transition:border-color .2s var(--ease)
}
.nav-toggle:hover{border-color:var(--ink)}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;width:16px;height:2px;background:var(--ink);border-radius:2px;
  transform:translateX(-50%);transition:transform .22s var(--ease),opacity .18s var(--ease)
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{content:"";left:0;top:-5px;transform:none}
.nav-toggle span::after{content:"";left:0;top:5px;transform:none}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:rotate(45deg) translateY(5px)}
.nav-toggle[aria-expanded="true"] span::after{transform:rotate(-45deg) translateY(-5px)}
.nav-drawer{display:none;border-bottom:1px solid var(--line);background:#fff}
.nav-drawer.is-open{display:block}
.drawer-inner{display:flex;flex-direction:column;gap:6px;padding:16px 40px 22px}
.drawer-link{padding:12px 14px;border:1px solid var(--line);border-radius:12px;font-size:15px;color:var(--text-2)}
.drawer-link:hover{border-color:var(--ink);color:var(--ink)}
.drawer-link.is-active{background:var(--ink);border-color:var(--ink);color:#fff}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border:1px solid transparent;border-radius:var(--r-btn);
  font-size:15px;font-weight:650;line-height:1;letter-spacing:.01em;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),transform .16s var(--ease);
}
.btn-primary{background:var(--orange);border-color:var(--orange);color:#fff;box-shadow:0 6px 18px rgba(255,77,46,.18)}
.btn-primary:hover{background:var(--orange-deep);border-color:var(--orange-deep);color:#fff}
.btn-dark{background:var(--ink);border-color:var(--ink);color:#fff}
.btn-dark:hover{background:#22262E;border-color:#22262E;color:#fff}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--ink);color:var(--ink)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-block{width:100%}
.btn:active{transform:translateY(1px)}
.btn[disabled],.btn.is-disabled{background:var(--soft);border-color:var(--soft);color:var(--muted);cursor:not-allowed;box-shadow:none}
.btn-arrow::after{content:"→";transition:transform .2s var(--ease)}
.btn-arrow:hover::after{transform:translateX(4px)}

/* ---------- breadcrumb ---------- */
.crumb{padding:28px 0 0}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-2)}
.crumb li{display:inline-flex;align-items:center;gap:8px}
.crumb li+li::before{content:"›";color:var(--muted)}
.crumb a:hover{color:var(--orange)}
.crumb .current{color:var(--text-2)}

/* ---------- hero ---------- */
.hero{padding:36px 0 0}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);gap:52px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:var(--r-btn);
  background:rgba(255,77,46,.10);color:var(--orange);font-size:12.5px;font-weight:650;letter-spacing:.08em;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--orange)}
.hero h1{
  margin:22px 0 0;font-size:clamp(34px,5vw,56px);font-weight:800;line-height:1.08;letter-spacing:-.02em;
}
.hero h1 em{font-style:normal;position:relative;white-space:nowrap}
.hero h1 em::after{
  content:"";position:absolute;left:0;right:0;bottom:.08em;height:8px;z-index:-1;
  background:rgba(255,77,46,.22);border-radius:4px;
}
.hero .sub{margin-top:22px;font-size:18px;line-height:1.75;color:var(--text-2);max-width:560px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.trust-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.trust-badge{
  display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border:1px solid var(--line);
  border-radius:var(--r-btn);background:#fff;font-size:12.5px;color:var(--text-2)
}
.trust-badge i{width:6px;height:6px;border-radius:50%;background:var(--teal);display:inline-block}
.hero-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
}
.hero-media{position:relative}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-media::after{content:"";position:absolute;inset:0;background:rgba(13,15,19,.08)}
.hero-card-body{padding:22px 24px 24px}
.hero-card-body h3{font-size:19px;font-weight:700;letter-spacing:-.01em}
.hero-card-list{margin-top:16px;display:grid;gap:0}
.hero-card-list li{
  display:flex;gap:12px;align-items:flex-start;padding:12px 0;border-top:1px solid var(--line);font-size:14.5px;color:var(--text-2)
}
.hero-card-list li:first-child{border-top:none;padding-top:4px}
.hero-card-list b{font-family:var(--font-num);font-size:16px;color:var(--orange);line-height:1.5;flex:0 0 26px}

/* ---------- section base ---------- */
.section{padding-top:var(--sec)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:38px}
.section-head .lead{max-width:620px}
.section-title{font-size:clamp(26px,3.4vw,38px);font-weight:750;line-height:1.2;letter-spacing:-.015em}
.section-sub{margin-top:14px;color:var(--text-2);font-size:16px;line-height:1.75}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:650;color:var(--ink);border-bottom:1px solid var(--ink);padding-bottom:2px}
.link-more::after{content:"→";transition:transform .2s var(--ease)}
.link-more:hover{color:var(--orange);border-color:var(--orange)}
.link-more:hover::after{transform:translateX(4px)}

/* ---------- audit band ---------- */
.audit{
  position:relative;border-radius:var(--r-card);overflow:hidden;color:#fff;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
}
.audit::after{content:"";position:absolute;inset:0;background:rgba(13,15,19,.82)}
.audit-inner{position:relative;z-index:1;padding:46px 48px}
.audit-tag{
  display:inline-block;font-size:12.5px;letter-spacing:.1em;color:#fff;
  background:rgba(255,255,255,.12);border-radius:var(--r-btn);padding:6px 14px
}
.audit h2{margin-top:18px;font-size:clamp(24px,3vw,32px);font-weight:750;line-height:1.24;letter-spacing:-.01em}
.audit-steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;margin-top:34px}
.audit-step{padding:0 26px;border-left:1px solid rgba(255,255,255,.18)}
.audit-step:first-child{border-left:none;padding-left:0}
.audit-step .num{font-family:var(--font-num);font-size:40px;line-height:1;color:var(--orange);font-weight:600}
.audit-step h3{margin-top:12px;font-size:17px;font-weight:700;color:#fff}
.audit-step p{margin-top:8px;font-size:14.5px;line-height:1.7;color:rgba(255,255,255,.72)}

/* ---------- split layout ---------- */
.split{display:grid;grid-template-columns:minmax(0,1fr) 304px;gap:44px;align-items:start}
.entry-list{display:grid;gap:18px}
.entry-card{
  display:grid;grid-template-columns:180px minmax(0,1fr);gap:22px;padding:18px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.entry-card:hover{transform:translateY(-4px);border-color:var(--ink);box-shadow:var(--sh-2)}
.entry-thumb{position:relative;overflow:hidden;border-radius:var(--r-img);background:var(--soft)}
.entry-thumb img{width:180px;height:120px;object-fit:cover;transition:transform .32s var(--ease)}
.entry-card:hover .entry-thumb img{transform:scale(1.03)}
.entry-body{display:flex;flex-direction:column;min-width:0}
.entry-tagline{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:10px}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:6px;
  background:rgba(255,77,46,.10);color:var(--orange);font-size:12px;font-weight:650;letter-spacing:.02em
}
.badge.teal{background:rgba(14,159,140,.12);color:var(--teal)}
.badge.soft{background:var(--soft);color:var(--text-2)}
.entry-title{font-size:20px;font-weight:700;line-height:1.35;letter-spacing:-.01em}
.entry-card:hover .entry-title{color:var(--orange)}
.entry-desc{
  margin-top:10px;font-size:14.8px;line-height:1.7;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden
}
.entry-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:auto;padding-top:14px;font-size:13px;color:var(--text-2)}
.entry-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--muted);display:inline-block}
.entry-arrow{margin-left:auto;font-size:14px;font-weight:650;color:var(--ink);display:inline-flex;align-items:center;gap:6px}
.entry-arrow::after{content:"→";transition:transform .2s var(--ease)}
.entry-card:hover .entry-arrow::after{transform:translateX(4px)}

/* ---------- sidebar ---------- */
.side{position:sticky;top:92px;display:grid;gap:18px}
.side-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:22px 22px 24px;box-shadow:var(--sh-1)}
.side-card h3{font-size:15px;font-weight:700;letter-spacing:.02em}
.toc{margin-top:14px;display:grid;gap:0}
.toc a{
  display:flex;align-items:center;gap:10px;padding:11px 0;border-top:1px solid var(--line);
  font-size:14.5px;color:var(--text-2)
}
.toc a:first-child{border-top:none}
.toc a::before{content:"";width:6px;height:6px;border-radius:50%;border:1px solid var(--muted);flex:0 0 6px}
.toc a:hover,.toc a.current{color:var(--ink)}
.toc a:hover::before,.toc a.current::before{background:var(--orange);border-color:var(--orange)}
.side-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.side-chip{
  padding:7px 13px;border:1px solid var(--line);border-radius:var(--r-btn);
  font-size:13px;color:var(--text-2);background:#fff
}
.side-chip:hover{border-color:var(--ink);color:var(--ink)}
.side-note{margin-top:14px;font-size:14px;line-height:1.7;color:var(--text-2)}
.side-card .btn{margin-top:16px}

/* ---------- compare table ---------- */
.table-wrap{margin-top:8px;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:#fff}
table.cmp{width:100%;border-collapse:collapse}
table.cmp caption{text-align:left;padding:18px 20px 0;font-size:13px;color:var(--text-2);letter-spacing:.04em}
table.cmp th{
  text-align:left;font-size:13px;font-weight:650;letter-spacing:.06em;color:var(--text-2);
  background:var(--soft);padding:14px 20px
}
table.cmp td{padding:16px 20px;border-top:1px solid var(--line);font-size:15px;vertical-align:top;line-height:1.7}
table.cmp tbody tr:nth-child(even){background:#FBFAF7}
table.cmp td strong{font-weight:700}
table.cmp td span.muted{color:var(--text-2);font-size:14px}

/* ---------- faq ---------- */
.faq{max-width:880px}
.faq-item{border-top:1px solid var(--line)}
.faq-item:last-child{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:24px 4px;background:transparent;border:none;text-align:left;
  font-size:20px;font-weight:650;line-height:1.5;letter-spacing:-.01em;color:var(--ink);
  transition:color .18s var(--ease)
}
.faq-q:hover{color:var(--orange)}
.faq-icon{position:relative;flex:0 0 20px;height:20px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform .22s var(--ease),background-color .18s var(--ease)
}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px}
.faq-item.is-open .faq-icon::before{background:var(--orange)}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-a{overflow:hidden;height:0;transition:height .22s var(--ease)}
.faq-a-inner{padding:0 4px 26px;font-size:16px;line-height:1.8;color:var(--text-2);max-width:760px}

/* ---------- cta ---------- */
.cta-band{background:var(--ink);color:#fff;padding:76px 0}
.cta-band h2{font-size:clamp(26px,3.4vw,40px);font-weight:750;line-height:1.2;letter-spacing:-.02em;max-width:720px}
.cta-band .sub{margin-top:16px;font-size:16px;line-height:1.75;color:rgba(255,255,255,.66);max-width:600px}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:20px;margin-top:32px}
.cta-actions .text-link{color:rgba(255,255,255,.7);font-size:14px;border-bottom:1px solid rgba(255,255,255,.3);padding-bottom:2px}
.cta-actions .text-link:hover{color:#fff;border-color:#fff}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#fff;padding:72px 0 28px;margin-top:var(--sec)}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr .8fr 1.1fr;gap:44px}
.footer-brand .brand{color:#fff}
.footer-brand .brand-mark{background:var(--orange)}
.footer-brand p{margin-top:18px;font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.62);max-width:340px}
.footer-social{display:flex;gap:10px;margin-top:20px}
.social-dot{
  padding:8px 14px;border:1px solid rgba(255,255,255,.18);border-radius:var(--r-btn);
  font-size:13px;color:rgba(255,255,255,.72)
}
.social-dot:hover{border-color:#fff;color:#fff}
.footer-col h4{font-size:14px;font-weight:700;letter-spacing:.06em;color:#fff;margin-bottom:18px}
.footer-col ul{display:grid;gap:12px}
.footer-col a{font-size:14.5px;color:rgba(255,255,255,.62)}
.footer-col a:hover{color:#fff}
.footer-form{margin-top:12px;display:grid;gap:10px}
.footer-form label{font-size:13px;color:rgba(255,255,255,.6)}
.footer-form input{
  height:48px;padding:0 16px;border-radius:10px;border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.05);color:#fff;font-size:15px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)
}
.footer-form input::placeholder{color:rgba(255,255,255,.38)}
.footer-form input:focus{outline:none;border-color:var(--orange);box-shadow:0 0 0 2px rgba(255,77,46,.35)}
.footer-form .hint{font-size:12.5px;color:rgba(255,255,255,.42)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:56px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.45)
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s var(--ease),transform .32s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 28px}
  .drawer-inner{padding:16px 28px 22px}
  .footer-grid{grid-template-columns:1.3fr 1fr 1fr;gap:36px}
  .split{grid-template-columns:minmax(0,1fr) 280px;gap:32px}
}
@media (max-width:1023px){
  :root{--sec:72px}
  .header-inner{gap:16px}
  .nav-chips{display:none}
  .nav-toggle{display:block}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero h1 em::after{height:6px}
  .split{grid-template-columns:1fr;gap:36px}
  .side{position:static}
  .audit-steps{grid-template-columns:1fr;gap:26px}
  .audit-step{border-left:none;padding:0;border-top:1px solid rgba(255,255,255,.18);padding-top:22px}
  .audit-step:first-child{border-top:none;padding-top:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  :root{--sec:52px}
  .container{padding:0 20px}
  .drawer-inner{padding:14px 20px 20px}
  .btn{padding:13px 22px}
  .btn-sm{padding:10px 16px}
  .hero{padding-top:22px}
  .hero .sub{font-size:16.5px}
  .hero-cta .btn{flex:1 1 auto}
  .audit-inner{padding:30px 24px}
  .entry-card{grid-template-columns:1fr;gap:16px;padding:14px}
  .entry-thumb img{width:100%;height:172px}
  .entry-meta{padding-top:12px}
  .entry-arrow{margin-left:0}
  .section-head{margin-bottom:26px}
  .faq-q{font-size:17.5px;padding:20px 2px;gap:16px}
  .cta-band{padding:56px 0}
  .footer-grid{grid-template-columns:1fr;gap:34px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  table.cmp,table.cmp tbody,table.cmp tr,table.cmp td{display:block;width:100%}
  table.cmp caption{padding:16px 16px 0}
  table.cmp thead{display:none}
  table.cmp tr{border-top:1px solid var(--line);padding:14px 16px}
  table.cmp tr:first-child{border-top:none}
  table.cmp td{border-top:none;padding:4px 0}
  table.cmp td::before{
    content:attr(data-label);display:block;font-size:12px;letter-spacing:.06em;
    color:var(--text-2);margin-bottom:2px
  }
}
@media (max-width:420px){
  body{font-size:15.5px}
  .brand-text{font-size:15.5px}
  .hero h1{font-size:clamp(28px,8vw,34px)}
  .section-title{font-size:24px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --ink:#0D0F13;
  --ink-2:#1B1F26;
  --orange:#FF4D2E;
  --orange-soft:rgba(255,77,46,.10);
  --teal:#0E9F8C;
  --teal-soft:rgba(14,159,140,.12);
  --bg:#F6F5F1;
  --card:#FFFFFF;
  --soft:#EFEDE7;
  --line:#E4E1D8;
  --text-2:#5A5F66;
  --text-3:#8B8F96;
  --disabled:#B7B4AC;
  --success:#0E9F8C;
  --warn:#E0A400;
  --error:#D63A2F;
  --info:#3C4757;
  --radius:14px;
  --radius-sm:10px;
  --radius-xs:6px;
  --shadow-1:0 1px 2px rgba(13,15,19,.05);
  --shadow-2:0 14px 34px rgba(13,15,19,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:220ms;
  --font-cn:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-num:"Barlow Condensed","Inter","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background-color var(--dur) var(--ease)}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4{margin:0;letter-spacing:-.02em;line-height:1.2;font-weight:750}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:4px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 18px;border-radius:0 0 10px 0;z-index:99}
.skip-link:focus{left:0}
.container{max-width:1240px;margin:0 auto;padding:0 40px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,245,241,.9);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(246,245,241,.96)}
.header-inner{display:flex;align-items:center;gap:26px;height:72px;transition:height var(--dur) var(--ease)}
.site-header.is-scrolled .header-inner{height:58px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  position:relative;
  width:36px;height:36px;border-radius:10px;
  background:var(--ink);color:#fff;
  display:grid;place-items:center;
  font-size:17px;font-weight:800;letter-spacing:0;
  transition:transform var(--dur) var(--ease);
}
.brand-mark::after{
  content:"";position:absolute;right:-3px;top:-3px;
  width:9px;height:9px;border-radius:50%;
  background:var(--orange);border:2px solid var(--bg);
}
.brand:hover .brand-mark{transform:translateY(-2px)}
.brand-text{font-size:17px;font-weight:800;letter-spacing:-.01em}
.nav-chips{
  display:flex;align-items:center;gap:8px;flex:1 1 auto;
  overflow-x:auto;overflow-y:hidden;
  scrollbar-width:none;-ms-overflow-style:none;
  padding:6px 2px;
  mask-image:linear-gradient(to right,#000 0,#000 calc(100% - 32px),transparent 100%);
  -webkit-mask-image:linear-gradient(to right,#000 0,#000 calc(100% - 32px),transparent 100%);
}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  flex:0 0 auto;
  padding:8px 15px;
  font-size:14px;line-height:1.2;white-space:nowrap;
  border:1px solid var(--line);border-radius:999px;
  color:var(--text-2);background:transparent;
  transition:all var(--dur) var(--ease);
}
.chip:hover{border-color:var(--ink);color:var(--ink);transform:translateY(-1px)}
.chip.is-active{background:var(--ink);border-color:var(--ink);color:#fff;font-weight:650}
.chip.is-active::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--orange)}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:50%;
  border:1px solid var(--line);position:relative;
  align-items:center;justify-content:center;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";display:block;width:17px;height:2px;background:var(--ink);border-radius:2px;
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.nav-toggle span::before{transform:translateY(-6px)}
.nav-toggle span::after{transform:translateY(4px)}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(0) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-2px) rotate(-45deg)}

.nav-drawer{
  position:fixed;left:0;right:0;top:72px;z-index:55;
  background:var(--card);border-bottom:1px solid var(--line);
  padding:18px 20px 24px;
  box-shadow:var(--shadow-2);
  display:none;
}
.nav-drawer.is-open{display:block;animation:drawerIn var(--dur) var(--ease)}
@keyframes drawerIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}
.nav-drawer nav{display:flex;flex-direction:column;gap:2px;margin-bottom:16px}
.nav-drawer nav a{
  padding:12px 4px;font-size:15px;border-bottom:1px solid var(--line);color:var(--text-2);
}
.nav-drawer nav a.is-active{color:var(--ink);font-weight:700}
.nav-drawer nav a:hover{color:var(--ink)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:999px;
  font-size:15px;font-weight:650;line-height:1;
  border:1px solid transparent;
  transition:all var(--dur) var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--orange);color:#fff}
.btn-primary:hover{background:#E33B1E;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:#22262E;transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--ink);background:rgba(13,15,19,.04)}
.btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.4);color:#fff}
.btn-ghost-light:hover{border-color:#fff;background:rgba(255,255,255,.12)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{background:var(--disabled);color:#fff;cursor:not-allowed;transform:none}
.btn .arrow{display:inline-block;transition:transform var(--dur) var(--ease)}
.btn:hover .arrow{transform:translateX(4px)}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:650;color:var(--ink);
}
.text-link .arrow{transition:transform var(--dur) var(--ease)}
.text-link:hover{color:var(--orange)}
.text-link:hover .arrow{transform:translateX(4px)}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 11px;border-radius:var(--radius-xs);
  background:var(--soft);color:var(--ink);
  font-size:12px;letter-spacing:.06em;line-height:1.4;
}
.badge-orange{background:var(--orange-soft);color:#C9311A}
.badge-teal{background:var(--teal-soft);color:#07786A}
.badge-light{background:rgba(255,255,255,.16);color:#fff}

/* ---------- 首屏 ---------- */
.cat-hero{
  position:relative;color:#fff;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  padding:88px 0 76px;
  overflow:hidden;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(13,15,19,.86) 0%,rgba(13,15,19,.66) 52%,rgba(13,15,19,.42) 100%);
}
.cat-hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.35fr .85fr;gap:48px;align-items:end}
.cat-hero h1{
  font-size:clamp(34px,5vw,58px);
  font-weight:800;line-height:1.08;letter-spacing:-.02em;
  margin:18px 0 18px;
}
.cat-hero h1 em{font-style:normal;color:var(--orange)}
.hero-sub{font-size:18px;line-height:1.75;color:rgba(255,255,255,.82);max-width:620px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-tags span{
  font-size:12px;letter-spacing:.06em;
  padding:6px 12px;border-radius:999px;
  border:1px solid rgba(255,255,255,.28);
  color:rgba(255,255,255,.86);
}
.hero-panel{
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.18);
  border-radius:var(--radius);
  padding:24px;
  backdrop-filter:blur(4px);
}
.hero-panel h3{font-size:15px;font-weight:650;color:#fff;margin-bottom:14px}
.hero-panel dl{margin:0;display:grid;gap:12px}
.hero-panel .row{display:flex;justify-content:space-between;align-items:baseline;gap:12px;font-size:14px;color:rgba(255,255,255,.78)}
.hero-panel .num{font-family:var(--font-num);font-size:26px;font-weight:700;color:#fff;letter-spacing:.02em}
.hero-panel .num small{font-size:12px;color:rgba(255,255,255,.7);margin-left:3px;font-family:var(--font-cn)}

/* ---------- 通用板块 ---------- */
.section{padding:104px 0}
.section-soft{background:var(--soft)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
.section-head h2{font-size:clamp(26px,3.4vw,42px);font-weight:750}
.section-head .eyebrow{
  display:block;font-size:12px;letter-spacing:.14em;color:var(--orange);
  font-weight:700;margin-bottom:12px;
}
.section-head p{margin-top:12px;color:var(--text-2);max-width:640px;font-size:16px}
.lead{font-size:17px;color:var(--text-2);max-width:760px}

/* ---------- 数据条 ---------- */
.stats-row{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:44px}
.stat-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow-1);
  transition:all var(--dur) var(--ease);
}
.stat-card:hover{border-color:var(--ink);transform:translateY(-4px);box-shadow:var(--shadow-2)}
.stat-card .num{font-family:var(--font-num);font-size:44px;font-weight:700;line-height:1;color:var(--ink)}
.stat-card .num small{font-family:var(--font-cn);font-size:14px;color:var(--text-2);margin-left:6px;font-weight:500}
.stat-card h3{font-size:16px;font-weight:650;margin:14px 0 8px}
.stat-card p{font-size:14px;color:var(--text-2);line-height:1.7}

/* ---------- 长卡网格 ---------- */
.cards-2col{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.long-card{
  display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:30px;box-shadow:var(--shadow-1);min-height:268px;
  transition:all var(--dur) var(--ease);
}
.long-card:hover{transform:translateY(-4px);border-color:var(--ink);box-shadow:var(--shadow-2)}
.long-card-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:20px}
.idx-badge{
  font-family:var(--font-num);font-size:18px;font-weight:700;letter-spacing:.04em;
  width:46px;height:46px;border-radius:12px;
  display:grid;place-items:center;
  background:var(--orange-soft);color:#C9311A;
}
.long-card:hover .idx-badge{background:var(--orange);color:#fff}
.long-card h3{font-size:21px;font-weight:650;margin-bottom:12px}
.long-card p{font-size:15px;color:var(--text-2);line-height:1.75}
.long-card-foot{margin-top:auto;padding-top:22px;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:12px}
.long-card-foot .meta{font-size:13px;color:var(--text-3)}

/* ---------- 赛程列表 ---------- */
.schedule-wrap{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-1);
}
.schedule-head{
  display:grid;grid-template-columns:92px 1.3fr 1.6fr 1fr 100px;
  gap:16px;padding:16px 26px;
  background:var(--soft);border-bottom:1px solid var(--line);
  font-size:12px;letter-spacing:.1em;color:var(--text-2);font-weight:650;
}
.schedule-row{
  display:grid;grid-template-columns:92px 1.3fr 1.6fr 1fr 100px;
  gap:16px;padding:20px 26px;align-items:center;
  border-bottom:1px solid var(--line);
  transition:background-color var(--dur) var(--ease);
}
.schedule-row:last-child{border-bottom:0}
.schedule-row:hover{background:#FAF9F6}
.schedule-row .time{font-family:var(--font-num);font-size:24px;font-weight:700;letter-spacing:.02em}
.schedule-row .league{font-size:15px;font-weight:600}
.schedule-row .match{font-size:14px;color:var(--text-2)}
.schedule-row .stage{font-size:14px;color:var(--text-2)}
.state{font-size:12px;padding:5px 10px;border-radius:var(--radius-xs);justify-self:start;font-weight:600}
.state.is-live{background:var(--orange-soft);color:#C9311A}
.state.is-soon{background:var(--teal-soft);color:#07786A}
.state.is-done{background:var(--soft);color:var(--text-2)}
.state.is-delay{background:rgba(224,164,0,.14);color:#8A6500}
.schedule-note{
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  padding:18px 26px;background:#FAF9F6;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-2);
}
.dot-live{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--orange);margin-right:6px;animation:pulse 1.6s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}

/* ---------- 步骤流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:44px}
.step{position:relative;padding-top:26px}
.step::before{
  content:"";position:absolute;top:9px;left:0;right:-24px;height:1px;background:var(--line);
}
.step:last-child::before{right:0}
.step::after{
  content:"";position:absolute;top:4px;left:0;width:11px;height:11px;border-radius:50%;
  background:var(--orange);box-shadow:0 0 0 5px var(--orange-soft);
}
.step h3{font-size:17px;font-weight:650;margin-bottom:8px}
.step p{font-size:14px;color:var(--text-2);line-height:1.75}
.step .tag{font-size:12px;letter-spacing:.1em;color:var(--teal);font-weight:700;display:block;margin-bottom:8px}

/* ---------- 图文区块 ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.split img{border-radius:var(--radius);box-shadow:var(--shadow-2);width:100%;height:100%;object-fit:cover;aspect-ratio:16/11}
.split h2{font-size:clamp(26px,3.4vw,40px);margin-bottom:18px}
.split p{color:var(--text-2);margin-bottom:16px}
.check-list{display:grid;gap:12px;margin-top:22px}
.check-list li{display:flex;gap:10px;font-size:15px;color:var(--ink)}
.check-list li::before{
  content:"";flex:0 0 auto;width:18px;height:18px;border-radius:50%;
  background:var(--orange-soft);
  background-image:linear-gradient(var(--orange),var(--orange));
  background-size:9px 2px;background-repeat:no-repeat;background-position:center;
  margin-top:5px;
}

/* ---------- FAQ ---------- */
.faq-list{max-width:880px;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 4px;text-align:left;
  font-size:20px;font-weight:600;line-height:1.5;
  transition:color var(--dur) var(--ease);
}
.faq-q:hover{color:var(--orange)}
.faq-icon{position:relative;flex:0 0 auto;width:18px;height:18px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink);border-radius:2px;
  transform:translate(-50%,-50%);
  transition:transform var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.faq-icon::before{width:16px;height:2px}
.faq-icon::after{width:2px;height:16px}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg)}
.faq-item.is-open .faq-icon::before{background:var(--orange)}
.faq-item.is-open .faq-q{color:var(--ink)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 220ms var(--ease)}
.faq-a p{padding:0 4px 26px;font-size:16px;color:var(--text-2);max-width:760px}

/* ---------- 收尾 CTA ---------- */
.cta-band{background:var(--ink);color:#fff;padding:88px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-band h2{font-size:clamp(26px,3.4vw,42px);margin-bottom:14px}
.cta-band p{color:rgba(255,255,255,.72);max-width:560px}
.cta-foot{margin-top:22px;font-size:13px;color:rgba(255,255,255,.55)}
.cta-foot a{color:rgba(255,255,255,.8);text-decoration:underline;text-underline-offset:3px}
.cta-foot a:hover{color:var(--orange)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--soft);padding:72px 0 28px;border-top:1px solid var(--line)}
.footer-grid{display:grid;grid-template-columns:1.35fr .8fr .8fr 1.1fr;gap:44px}
.footer-brand p{font-size:14px;color:var(--text-2);margin:18px 0 20px;max-width:320px}
.footer-social{display:flex;gap:10px}
.social-dot{
  font-size:12px;padding:7px 14px;border-radius:999px;
  border:1px solid var(--line);background:var(--card);color:var(--text-2);
  transition:all var(--dur) var(--ease);
}
.social-dot:hover{border-color:var(--ink);color:var(--ink);transform:translateY(-2px)}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:18px}
.footer-col ul{display:grid;gap:11px}
.footer-col ul a{font-size:14px;color:var(--text-2)}
.footer-col ul a:hover{color:var(--orange)}
.footer-form{display:grid;gap:10px;margin-top:4px}
.footer-form label{font-size:13px;color:var(--text-2)}
.footer-form input{
  height:48px;padding:0 16px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:var(--card);color:var(--ink);
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.footer-form input::placeholder{color:var(--text-3)}
.footer-form input:focus{
  outline:none;border-color:var(--ink);box-shadow:0 0 0 2px rgba(255,77,46,.35);
}
.footer-form .hint{font-size:12px;color:var(--text-3)}
.footer-bottom{
  margin-top:56px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-2);
}

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

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .hero-grid{grid-template-columns:1.2fr .8fr;gap:36px}
  .footer-grid{grid-template-columns:1.2fr .8fr .8fr 1fr;gap:32px}
}
@media (max-width:1023px){
  .container{padding:0 28px}
  .section{padding:72px 0}
  .nav-chips{mask-image:linear-gradient(to right,#000 0,#000 calc(100% - 24px),transparent 100%);-webkit-mask-image:linear-gradient(to right,#000 0,#000 calc(100% - 24px),transparent 100%)}
  .btn-header-cta{display:none}
  .nav-toggle{display:inline-flex}
  .cat-hero{padding:64px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:32px;align-items:start}
  .hero-panel{max-width:520px}
  .split{grid-template-columns:1fr;gap:32px}
  .split img{aspect-ratio:16/9}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .steps{grid-template-columns:repeat(2,1fr);gap:28px}
  .step::before{right:-28px}
  .step:nth-child(2)::before{right:0}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:52px 0}
  .section-head{flex-direction:column;align-items:flex-start;margin-bottom:30px}
  .cards-2col{grid-template-columns:1fr}
  .stats-row{grid-template-columns:1fr;gap:14px}
  .long-card{padding:24px;min-height:0}
  .nav-drawer{top:72px}
  .schedule-head{display:none}
  .schedule-row{
    grid-template-columns:1fr 1fr;gap:8px 14px;
    padding:18px 20px;
  }
  .schedule-row .time{grid-column:1;font-size:22px}
  .schedule-row .state{grid-column:2;justify-self:end}
  .schedule-row .league{grid-column:1 / -1}
  .schedule-row .match{grid-column:1 / -1}
  .schedule-row .stage{grid-column:1 / -1;color:var(--text-3)}
  .steps{grid-template-columns:1fr;gap:26px}
  .step::before{display:none}
  .step{padding-top:18px;padding-left:22px}
  .step::after{top:22px}
  .faq-q{font-size:18px;padding:20px 2px}
  .cta-band{padding:64px 0}
  .split img{aspect-ratio:4/3}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;gap:8px}
  .hero-cta .btn{flex:1 1 auto}
}
@media (max-width:520px){
  body{font-size:15px}
  .brand-text{font-size:15px}
  .cat-hero h1{font-size:clamp(28px,8vw,36px)}
  .hero-sub{font-size:16px}
  .chip{font-size:13px;padding:7px 12px}
  .section-head h2{font-size:26px}
  .long-card h3{font-size:19px}
  .stat-card .num{font-size:36px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --ink:#0D0F13;
  --orange:#FF4D2E;
  --orange-soft:rgba(255,77,46,.10);
  --teal:#0E9F8C;
  --teal-soft:rgba(14,159,140,.12);
  --paper:#F6F5F1;
  --white:#FFFFFF;
  --muted-bg:#EFEDE7;
  --line:#E4E1D8;
  --text:#0D0F13;
  --text-2:#5A5F66;
  --disabled:#B7B4AC;
  --warn:#E0A400;
  --danger:#D63A2F;
  --info:#3C4757;
  --radius:14px;
  --radius-sm:10px;
  --shadow-1:0 1px 2px rgba(13,15,19,.05);
  --shadow-2:0 14px 34px rgba(13,15,19,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Barlow Condensed","Inter","HarmonyOS Sans SC",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);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease),opacity .18s var(--ease)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
input{font:inherit}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px}
.section{padding:104px 0}
.section-tight{padding:72px 0}
.section-head{max-width:760px;margin-bottom:48px}
.section-head h2{font-size:clamp(26px,3.4vw,42px);font-weight:750;line-height:1.2;letter-spacing:-.01em}
.section-head p{margin-top:14px;color:var(--text-2);font-size:17px}
.eyebrow{display:inline-block;font-size:12px;letter-spacing:.14em;color:var(--orange);font-weight:700;margin-bottom:14px}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,245,241,.94);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .24s var(--ease),background-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 1px 2px rgba(13,15,19,.04)}
.header-inner{
  display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:26px;
  padding:14px 0;transition:padding .24s var(--ease);
}
.site-header.is-scrolled .header-inner{padding:8px 0}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--ink);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:17px;
  transition:transform .24s var(--ease);
}
.brand:hover .brand-mark{transform:translateY(-2px)}
.brand-text{font-weight:800;font-size:17px;letter-spacing:-.01em;white-space:nowrap}
.nav-chips{display:flex;align-items:center;gap:8px;justify-content:center;overflow-x:auto;scrollbar-width:none}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  position:relative;flex:none;display:inline-flex;align-items:center;gap:6px;
  padding:8px 15px;border-radius:999px;border:1px solid var(--line);
  font-size:14px;color:var(--text-2);white-space:nowrap;
  transition:border-color .2s var(--ease),color .2s var(--ease),background-color .2s var(--ease);
}
.chip:hover{border-color:var(--ink);color:var(--ink)}
.chip.is-active{background:var(--ink);border-color:var(--ink);color:#fff;font-weight:600}
.chip.is-active::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--orange)}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  align-items:center;justify-content:center;background:var(--white);position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";display:block;width:16px;height:2px;background:var(--ink);border-radius:2px;
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.nav-toggle span::before{transform:translateY(-5px)}
.nav-toggle span::after{transform:translateY(3px)}
.nav-toggle span{position:relative;top:1px}
.nav-open .nav-toggle span{background:transparent}
.nav-open .nav-toggle span::before{transform:rotate(45deg) translate(0,0)}
.nav-open .nav-toggle span::after{transform:rotate(-45deg) translate(0,0)}
.nav-drawer{display:none}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;white-space:nowrap;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .16s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--orange);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:#E63C1F;box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:#1B1F26}
.btn-dark:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--ink);background:var(--white)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-lg{padding:16px 34px;font-size:16px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{background:var(--disabled);border-color:var(--disabled);color:#fff;cursor:not-allowed;box-shadow:none}
.btn.is-loading{pointer-events:none;opacity:.8}
.btn.is-loading::after{
  content:"";width:16px;height:16px;border-radius:50%;
  border:2px solid rgba(255,255,255,.4);border-top-color:#fff;animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink)}
.link-arrow::after{content:"→";transition:transform .2s var(--ease)}
.link-arrow:hover{color:var(--orange)}
.link-arrow:hover::after{transform:translateX(4px)}

/* ---------- tags ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:5px 10px;border-radius:6px;
  background:var(--muted-bg);color:var(--ink);font-size:12px;letter-spacing:.04em;font-weight:600;
}
.tag-orange{background:var(--orange-soft);color:#C2331A}
.tag-teal{background:var(--teal-soft);color:#0A7A6B}

/* ---------- hero ---------- */
.cat-hero{padding:72px 0 88px;position:relative;overflow:hidden}
.cat-hero::after{
  content:"";position:absolute;right:-140px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,77,46,.10),rgba(255,77,46,0) 68%);
  pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center;position:relative;z-index:1}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2);margin-bottom:20px}
.crumb a:hover{color:var(--orange)}
.crumb-current{color:var(--text-2)}
.cat-hero h1{
  font-size:clamp(34px,5vw,62px);font-weight:800;line-height:1.08;letter-spacing:-.02em;
  max-width:16ch;
}
.lead{margin-top:22px;font-size:18px;line-height:1.75;color:var(--text-2);max-width:52ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.hero-tags li{
  font-size:12px;letter-spacing:.05em;color:var(--text-2);
  border:1px solid var(--line);border-radius:999px;padding:6px 12px;background:var(--white);
}
.hero-media{position:relative}
.hero-media img{border-radius:var(--radius);border:1px solid var(--line);box-shadow:var(--shadow-1)}
.media-note{
  position:absolute;left:-18px;bottom:-20px;background:var(--ink);color:#fff;
  border-radius:12px;padding:14px 18px;font-size:13px;display:flex;align-items:center;gap:10px;
  box-shadow:var(--shadow-2);
}
.media-note .num{font-family:var(--font-num);font-size:30px;font-weight:700;line-height:1;color:var(--orange)}

/* ---------- timeline ---------- */
.timeline-wrap{display:grid;grid-template-columns:280px 1fr;gap:56px;align-items:start}
.timeline-aside{position:sticky;top:112px}
.timeline-aside h3{font-size:20px;font-weight:650;margin-bottom:12px}
.timeline-aside p{color:var(--text-2);font-size:14.5px}
.aside-facts{margin-top:22px;border-top:1px solid var(--line);padding-top:18px}
.aside-facts li{display:flex;justify-content:space-between;gap:12px;font-size:13.5px;color:var(--text-2);padding:9px 0;border-bottom:1px dashed var(--line)}
.aside-facts li b{color:var(--ink);font-weight:650}
.timeline{position:relative;max-width:880px}
.timeline::before{content:"";position:absolute;left:7px;top:10px;bottom:10px;width:2px;background:var(--line)}
.tl-item{position:relative;padding:0 0 52px 46px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:0;top:8px;width:16px;height:16px;border-radius:50%;
  background:var(--orange);box-shadow:0 0 0 5px var(--paper);border:2px solid var(--white);
}
.tl-item .stage{display:inline-block;font-size:12px;letter-spacing:.14em;font-weight:700;color:var(--orange);margin-bottom:10px}
.tl-item h3{font-size:22px;font-weight:650;line-height:1.35}
.tl-item p{margin-top:10px;color:var(--text-2);font-size:15.5px;max-width:62ch}
.tl-figure{margin-top:20px;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--white);max-width:520px}
.tl-figure img{width:100%;aspect-ratio:16/10;object-fit:cover}
.tl-figure figcaption{font-size:12.5px;color:var(--text-2);padding:12px 16px;border-top:1px solid var(--line)}
.tl-inline{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.tl-inline span{font-size:12.5px;color:var(--text-2);background:var(--muted-bg);border-radius:6px;padding:5px 10px}

/* ---------- split list ---------- */
.split-wrap{display:grid;grid-template-columns:1fr .82fr;gap:56px;align-items:start}
.split-list{border-top:1px solid var(--line)}
.split-list li{display:grid;grid-template-columns:132px 1fr;gap:24px;padding:24px 0;border-bottom:1px solid var(--line)}
.split-list .label{font-weight:700;font-size:17px;letter-spacing:-.01em}
.split-list p{color:var(--text-2);font-size:15px}
.split-media img{border-radius:var(--radius);border:1px solid var(--line)}
.split-media figure{margin:0 0 24px}
.split-media figcaption{margin-top:10px;font-size:12.5px;color:var(--text-2)}

/* ---------- stats ---------- */
.stats-band{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat{padding:38px 28px;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat-num{font-family:var(--font-num);font-size:clamp(38px,4.4vw,58px);font-weight:700;line-height:1;letter-spacing:-.02em}
.stat-num em{font-style:normal;color:var(--orange);font-size:.5em;margin-left:2px}
.stat-label{display:block;margin-top:12px;font-size:14px;color:var(--text-2)}

/* ---------- faq ---------- */
.faq{max-width:880px;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:18px;
  padding:24px 4px;font-size:20px;font-weight:600;line-height:1.5;
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--orange)}
.faq-icon{position:relative;width:16px;height:16px;margin-left:auto;flex:none}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--ink);transition:transform .22s var(--ease),opacity .22s var(--ease),background-color .22s var(--ease);
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{left:7px;top:0;width:2px;height:16px}
.faq-item[open] .faq-icon::before{background:var(--orange)}
.faq-item[open] .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-body{padding:0 4px 26px;color:var(--text-2);font-size:15.5px;max-width:70ch}

/* ---------- final cta ---------- */
.final-cta{background:var(--ink);color:#fff;padding:96px 0}
.final-cta h2{font-size:clamp(26px,3.4vw,42px);font-weight:750;line-height:1.2;max-width:20ch}
.final-cta p{margin-top:16px;color:rgba(255,255,255,.72);font-size:17px;max-width:56ch}
.final-cta .hero-actions{margin-top:30px}
.final-cta .btn-ghost{border-color:rgba(255,255,255,.3);color:#fff}
.final-cta .btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.cta-foot{margin-top:26px;font-size:13.5px;color:rgba(255,255,255,.6)}
.cta-foot a{border-bottom:1px solid rgba(255,255,255,.35);color:#fff}
.cta-foot a:hover{border-color:var(--orange);color:var(--orange)}

/* ---------- footer ---------- */
.site-footer{background:var(--muted-bg);border-top:1px solid var(--line);padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:44px}
.footer-brand p{margin-top:16px;color:var(--text-2);font-size:14.5px;max-width:34ch}
.footer-social{display:flex;gap:10px;margin-top:20px}
.social-dot{
  font-size:12.5px;padding:6px 12px;border-radius:999px;background:var(--white);
  border:1px solid var(--line);color:var(--text-2);
}
.social-dot:hover{border-color:var(--ink);color:var(--ink)}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{font-size:14px;color:var(--text-2)}
.footer-col ul a:hover{color:var(--orange)}
.footer-form{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.footer-form label{font-size:13px;color:var(--text-2)}
.footer-form input{
  height:48px;padding:0 14px;border-radius:10px;border:1px solid var(--line);
  background:var(--white);color:var(--ink);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.footer-form input::placeholder{color:var(--disabled)}
.footer-form input:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 2px rgba(255,77,46,.35)}
.footer-form .hint{font-size:12.5px;color:var(--text-2)}
.footer-bottom{
  margin-top:56px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
  font-size:13px;color:var(--text-2);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s var(--ease),transform .32s var(--ease)}
.reveal.in-view{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 32px}
  .header-inner{gap:18px}
  .chip{font-size:13.5px;padding:8px 13px}
}
@media (max-width:1023px){
  .container{padding:0 28px}
  .section{padding:72px 0}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .cat-hero h1{max-width:none}
  .timeline-wrap{grid-template-columns:1fr;gap:34px}
  .timeline-aside{position:static}
  .split-wrap{grid-template-columns:1fr;gap:36px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-right:0}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .media-note{left:0}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:52px 0}
  .section-head{margin-bottom:32px}
  .header-inner{grid-template-columns:1fr auto;grid-template-areas:"brand toggle" "chips chips";gap:12px;padding:12px 0}
  .brand{grid-area:brand}
  .header-actions{grid-area:toggle}
  .nav-chips{
    grid-area:chips;justify-content:flex-start;padding-bottom:2px;
    -webkit-mask-image:linear-gradient(90deg,#000 88%,transparent);
    mask-image:linear-gradient(90deg,#000 88%,transparent);
  }
  .btn-header-cta{display:none}
  .nav-toggle{display:inline-flex}
  .nav-drawer{
    display:block;position:absolute;left:0;right:0;top:100%;
    background:var(--white);border-bottom:1px solid var(--line);
    padding:18px 20px 22px;box-shadow:var(--shadow-2);
    opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s var(--ease);
  }
  .nav-open .nav-drawer{opacity:1;visibility:visible;transform:none}
  .nav-drawer ul li{border-bottom:1px solid var(--line)}
  .nav-drawer ul li:last-child{border-bottom:0}
  .nav-drawer a.drawer-link{display:block;padding:13px 2px;font-size:15px;color:var(--text-2)}
  .nav-drawer a.drawer-link.is-active{color:var(--ink);font-weight:700}
  .nav-drawer .btn{margin-top:16px}
  .hero-tags li{font-size:11.5px}
  .split-list li{grid-template-columns:1fr;gap:8px;padding:20px 0}
  .tl-item{padding-left:34px}
  .stats{grid-template-columns:1fr}
  .stat{border-right:0;border-bottom:1px solid var(--line);padding:26px 4px}
  .stat:last-child{border-bottom:0}
  .faq-item summary{font-size:17.5px;padding:20px 2px;gap:12px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .final-cta{padding:64px 0}
  .site-footer{padding:56px 0 24px}
}
@media (max-width:520px){
  body{font-size:15px}
  .cat-hero{padding:48px 0 60px}
  .cat-hero h1{font-size:clamp(28px,8vw,36px)}
  .lead{font-size:16px}
  .btn{padding:12px 22px;font-size:14.5px}
  .btn-lg{padding:14px 24px;font-size:15px}
  .stat-num{font-size:38px}
  .media-note{padding:10px 14px;font-size:12px}
  .media-note .num{font-size:22px}
  .tl-item h3{font-size:19px}
  .faq-item summary{font-size:16.5px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category4 */
:root{
  --ink:#0D0F13;
  --brand:#FF4D2E;
  --brand-dark:#E23A1E;
  --teal:#0E9F8C;
  --bg:#F6F5F1;
  --card:#FFFFFF;
  --soft:#EFEDE7;
  --line:#E4E1D8;
  --text-2:#5A5F66;
  --muted:#B7B4AC;
  --warn:#E0A400;
  --err:#D63A2F;
  --info:#3C4757;
  --radius:14px;
  --radius-sm:10px;
  --shadow-1:0 1px 2px rgba(13,15,19,.05);
  --shadow-2:0 14px 34px rgba(13,15,19,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Barlow Condensed","Inter",system-ui,sans-serif;
  --pad:40px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1{font-size:clamp(34px,5vw,62px);font-weight:800;letter-spacing:-.02em;line-height:1.08}
h2{font-size:clamp(26px,3.4vw,42px);font-weight:750;line-height:1.2;letter-spacing:-.01em}
h3{font-size:21px;font-weight:650;line-height:1.4}
p{color:var(--text-2)}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.container{max-width:1240px;margin:0 auto;padding:0 var(--pad)}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:0}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(246,245,241,.94);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .24s var(--ease),background .24s var(--ease);
}
.site-header.is-compact{border-bottom-color:var(--line);background:rgba(246,245,241,.97)}
.header-inner{display:flex;align-items:center;gap:18px;height:72px;transition:height .24s var(--ease)}
.site-header.is-compact .header-inner{height:58px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink)}
.brand-mark{
  width:34px;height:34px;flex:0 0 auto;border-radius:10px;background:var(--ink);color:#fff;
  display:grid;place-items:center;font-size:16px;font-weight:800;line-height:1;
  transition:background .2s var(--ease),transform .2s var(--ease);
}
.brand:hover .brand-mark{background:var(--brand);transform:translateY(-1px)}
.brand-text{font-size:16px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.nav-chips{
  display:flex;align-items:center;gap:6px;flex:1 1 auto;min-width:0;
  overflow-x:auto;scrollbar-width:none;justify-content:center;
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 16px,#000 calc(100% - 16px),transparent 100%);
  mask-image:linear-gradient(90deg,transparent 0,#000 16px,#000 calc(100% - 16px),transparent 100%);
}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:6px;
  padding:8px 14px;border:1px solid var(--line);border-radius:999px;
  font-size:13.5px;line-height:1.4;color:var(--text-2);background:transparent;
  white-space:nowrap;cursor:pointer;
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.chip:hover{border-color:var(--ink);color:var(--ink)}
.chip.is-active{background:var(--ink);color:#fff;border-color:var(--ink);font-weight:600}
.chip.is-active::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);flex:0 0 auto}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto;flex:0 0 auto}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);background:#fff;border-radius:12px;
  cursor:pointer;position:relative;transition:border-color .2s var(--ease)
}
.nav-toggle:hover{border-color:var(--ink)}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;left:50%;width:16px;height:2px;background:var(--ink);border-radius:2px;
  transform:translateX(-50%);content:"";transition:transform .24s var(--ease),opacity .24s var(--ease)
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{top:-6px;left:0;transform:none}
.nav-toggle span::after{top:6px;left:0;transform:none}
body.nav-open .nav-toggle span{background:transparent}
body.nav-open .nav-toggle span::before{transform:translateY(6px) rotate(45deg)}
body.nav-open .nav-toggle span::after{transform:translateY(-6px) rotate(-45deg)}
.nav-drawer{
  display:none;position:absolute;left:0;right:0;top:100%;
  background:var(--card);border-bottom:1px solid var(--line);
  box-shadow:var(--shadow-2);padding:14px 20px 20px;
}
.nav-drawer.is-open{display:block}
.nav-drawer a{
  display:block;padding:12px 4px;font-size:15px;color:var(--ink);
  border-bottom:1px solid var(--line);
}
.nav-drawer a:last-child{border-bottom:0}
.nav-drawer a.is-active{color:var(--brand);font-weight:700}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:999px;cursor:pointer;
  padding:14px 28px;font-size:15px;font-weight:650;line-height:1;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),transform .16s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn-sm{padding:10px 18px;font-size:13.5px}
.btn-block{width:100%}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(255,77,46,.22)}
.btn-primary:hover{background:var(--brand-dark)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:#22262e}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink);border-radius:var(--radius-sm)}
.btn-ghost:hover{border-color:var(--ink);background:#fff}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;font-weight:650;font-size:14px;color:var(--ink);
  border:0;background:transparent;padding:6px 0;cursor:pointer;
}
.btn-text .arw{transition:transform .2s var(--ease)}
.btn-text:hover{color:var(--brand)}
.btn-text:hover .arw{transform:translateX(4px)}
.btn[disabled],.btn.is-disabled{background:var(--muted);color:#fff;cursor:not-allowed;box-shadow:none}

/* ---------- shared section ---------- */
.section{padding:104px 0}
.section-tight{padding:72px 0}
.sec-head{max-width:760px;margin-bottom:40px}
.sec-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.08em;
  color:var(--text-2);text-transform:uppercase;margin-bottom:14px;font-weight:600;
}
.sec-head .eyebrow::before{content:"";width:20px;height:2px;background:var(--brand);border-radius:2px}
.sec-head p{margin-top:14px;font-size:17px;line-height:1.75}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:5px 11px;border-radius:6px;
  background:var(--soft);color:var(--ink);font-size:12px;font-weight:600;letter-spacing:.04em;
}
.badge-brand{background:rgba(255,77,46,.10);color:#B8300F}
.badge-teal{background:rgba(14,159,140,.12);color:#0A7566}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s var(--ease),transform .32s var(--ease)}
.reveal.in-view{opacity:1;transform:none}

/* ---------- hero ---------- */
.hero{padding:56px 0 80px;border-bottom:1px solid var(--line)}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2);margin-bottom:28px;flex-wrap:wrap}
.crumbs a{color:var(--text-2);transition:color .2s var(--ease)}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{color:var(--muted)}
.crumbs .cur{color:var(--ink);font-weight:600}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.hero h1{margin:16px 0 20px}
.hero h1 em{font-style:normal;color:var(--brand)}
.hero-lead{font-size:18px;line-height:1.75;color:var(--text-2);max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.tagline{
  display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line);font-size:12.5px;color:var(--text-2);font-weight:600;
}
.tagline::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--teal)}
.hero-visual{
  position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-2);background:var(--soft);
}
.hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-visual::after{
  content:"";position:absolute;inset:0;background:rgba(13,15,19,.08);pointer-events:none
}
.hero-visual .caption{
  position:absolute;left:16px;bottom:16px;z-index:2;
  background:rgba(13,15,19,.78);color:#fff;font-size:12.5px;padding:8px 14px;border-radius:999px;
  letter-spacing:.02em;
}

/* ---------- filter row ---------- */
.filter-row{
  display:flex;gap:8px;overflow-x:auto;padding-bottom:6px;margin-bottom:8px;
  scrollbar-width:none;
  -webkit-mask-image:linear-gradient(90deg,#000 calc(100% - 24px),transparent 100%);
  mask-image:linear-gradient(90deg,#000 calc(100% - 24px),transparent 100%);
}
.filter-row::-webkit-scrollbar{display:none}
.filter-row .chip.is-active{background:var(--ink);color:#fff}

/* ---------- index list ---------- */
.index-list{border-top:1px solid var(--line);margin-top:18px}
.index-row{
  display:grid;grid-template-columns:64px 1fr 28px;align-items:center;gap:18px;
  padding:22px 20px;border-bottom:1px solid var(--line);
  transition:background .22s var(--ease);
}
.index-row:hover{background:var(--soft)}
.index-row:hover .index-arrow{transform:translateX(4px);color:var(--brand)}
.index-num{
  font-family:var(--font-num);font-size:26px;font-weight:600;color:var(--brand);
  line-height:1;letter-spacing:.02em;
}
.index-title{display:block;font-size:17.5px;font-weight:650;line-height:1.5;color:var(--ink)}
.index-desc{display:block;font-size:14.5px;color:var(--text-2);line-height:1.7;margin-top:4px}
.index-arrow{
  font-size:18px;color:var(--muted);text-align:right;
  transition:transform .2s var(--ease),color .2s var(--ease);
}
.index-empty{
  display:none;padding:56px 20px;text-align:center;color:var(--text-2);border-bottom:1px solid var(--line);
}
.index-empty .ico{
  width:46px;height:46px;margin:0 auto 14px;border-radius:50%;background:var(--soft);
  display:grid;place-items:center;font-size:20px;color:var(--muted);
}
.index-empty.is-show{display:block}

/* ---------- table ---------- */
.table-wrap{
  border:1px solid var(--line);border-radius:var(--radius);background:var(--card);
  overflow:hidden;box-shadow:var(--shadow-1);
}
.spec-table{width:100%;border-collapse:collapse;font-size:15px}
.spec-table caption{text-align:left;padding:0}
.spec-table th,.spec-table td{padding:18px 24px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
.spec-table thead th{
  background:var(--soft);font-size:13px;letter-spacing:.06em;color:var(--text-2);
  font-weight:650;white-space:nowrap;
}
.spec-table tbody tr:last-child td{border-bottom:0}
.spec-table tbody tr:hover{background:#FBF9F5}
.spec-table td:first-child{width:36%;font-weight:650;color:var(--ink)}
.spec-table td:last-child{color:var(--text-2)}

/* ---------- two column feature ---------- */
.split{display:grid;grid-template-columns:.34fr .66fr;gap:48px}
.split-label h2{font-size:clamp(22px,2.4vw,30px)}
.split-label p{margin-top:14px;font-size:15px}
.point-list{border-top:1px solid var(--line)}
.point{
  display:grid;grid-template-columns:44px 1fr;gap:16px;padding:22px 0;border-bottom:1px solid var(--line);
}
.point .dot{
  width:36px;height:36px;border-radius:50%;background:rgba(14,159,140,.12);color:#0A7566;
  display:grid;place-items:center;font-family:var(--font-num);font-size:15px;font-weight:600;
}
.point h3{font-size:17px;margin-bottom:6px}
.point p{font-size:15px;line-height:1.75}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.step{padding:30px 24px;border-right:1px solid var(--line);transition:background .22s var(--ease)}
.step:last-child{border-right:0}
.step:hover{background:var(--soft)}
.step .snum{font-family:var(--font-num);font-size:38px;font-weight:600;color:var(--muted);line-height:1;display:block;margin-bottom:14px}
.step:hover .snum{color:var(--brand)}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14.5px;line-height:1.7}

/* ---------- faq ---------- */
.faq{max-width:880px}
.faq-item{border-top:1px solid var(--line)}
.faq-item:last-child{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 4px;font-size:20px;font-weight:600;color:var(--ink);line-height:1.5;
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-icon{position:relative;width:18px;height:18px;flex:0 0 auto}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--ink);border-radius:2px;transition:transform .22s var(--ease),background .22s var(--ease)
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item[open] .faq-icon::after{transform:scaleY(0)}
.faq-item[open] summary{color:var(--brand)}
.faq-item[open] .faq-icon::before,.faq-item[open] .faq-icon::after{background:var(--brand)}
.faq-body{padding:0 4px 26px;max-width:760px}
.faq-body p{font-size:16px;line-height:1.85}

/* ---------- cta ---------- */
.cta{background:var(--ink);color:#fff;padding:88px 0}
.cta h2{color:#fff;max-width:760px}
.cta p{color:rgba(255,255,255,.68);margin-top:18px;max-width:620px;font-size:17px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.cta .btn-ghost{border-color:rgba(255,255,255,.28);color:#fff}
.cta .btn-ghost:hover{background:rgba(255,255,255,.08);border-color:#fff}
.cta-foot{margin-top:26px;font-size:13px;color:rgba(255,255,255,.5)}
.cta-foot a{color:rgba(255,255,255,.78);border-bottom:1px solid rgba(255,255,255,.28)}
.cta-foot a:hover{color:#fff}

/* ---------- footer ---------- */
.site-footer{background:var(--soft);border-top:1px solid var(--line);padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:44px}
.footer-brand .brand{margin-bottom:18px}
.footer-brand p{font-size:14.5px;line-height:1.8;max-width:320px}
.footer-social{display:flex;gap:10px;margin-top:20px;flex-wrap:wrap}
.social-dot{
  display:inline-flex;align-items:center;justify-content:center;
  padding:8px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);
  font-size:12.5px;color:var(--text-2);font-weight:600;transition:border-color .2s var(--ease),color .2s var(--ease)
}
.social-dot:hover{border-color:var(--ink);color:var(--ink)}
.footer-col h4{font-size:14px;font-weight:700;letter-spacing:.04em;margin-bottom:18px;color:var(--ink)}
.footer-col ul li{margin-bottom:11px}
.footer-col ul a{font-size:14.5px;color:var(--text-2);transition:color .2s var(--ease)}
.footer-col ul a:hover{color:var(--brand)}
.footer-form{margin-top:6px}
.footer-form label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px}
.footer-form input{
  width:100%;height:48px;padding:0 16px;border:1px solid var(--line);border-radius:var(--radius-sm);
  background:#fff;font-size:15px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.footer-form input::placeholder{color:var(--muted)}
.footer-form input:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 2px rgba(255,77,46,.35)}
.footer-form .btn{margin-top:12px}
.footer-form .hint{display:block;margin-top:10px;font-size:12.5px;color:var(--text-2)}
.footer-bottom{
  margin-top:56px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-2);
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  :root{--pad:32px}
  .hero-grid{gap:40px}
}
@media (max-width:1023px){
  :root{--pad:28px}
  .section{padding:72px 0}
  .section-tight{padding:56px 0}
  .hero{padding:40px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-visual img{aspect-ratio:16/9}
  .split{grid-template-columns:1fr;gap:28px}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step:nth-child(2){border-right:0}
  .step:nth-child(1),.step:nth-child(2){border-bottom:1px solid var(--line)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .nav-chips{justify-content:flex-start}
}
@media (max-width:767px){
  :root{--pad:20px}
  body{font-size:15.5px}
  .section{padding:52px 0}
  .section-tight{padding:44px 0}
  .header-inner{height:64px}
  .site-header.is-compact .header-inner{height:56px}
  .btn-header-cta{display:none}
  .nav-toggle{display:block}
  .nav-chips{flex:1 1 auto}
  .brand-text{font-size:14.5px}
  .index-row{grid-template-columns:44px 1fr 20px;gap:12px;padding:18px 12px}
  .index-num{font-size:20px}
  .index-title{font-size:16px}
  .index-desc{font-size:14px}
  .spec-table thead{display:none}
  .spec-table,.spec-table tbody,.spec-table tr,.spec-table td{display:block;width:100%}
  .spec-table tr{
    border:1px solid var(--line);border-radius:var(--radius-sm);background:#fff;
    padding:16px;margin:0 0 12px;
  }
  .spec-table td{border:0;padding:0}
  .spec-table td:first-child{width:100%;font-size:16px;margin-bottom:6px}
  .spec-table td:last-child::before{
    content:"处理方向";display:block;font-size:12px;letter-spacing:.08em;color:var(--muted);margin-bottom:4px;
  }
  .table-wrap{border:0;background:transparent;box-shadow:none;overflow:visible}
  .steps{grid-template-columns:1fr}
  .step{border-right:0;border-bottom:1px solid var(--line);padding:24px 4px}
  .step:last-child{border-bottom:0}
  .faq-item summary{font-size:17.5px;padding:20px 2px}
  .cta{padding:60px 0}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{margin-top:40px}
}
@media (max-width:420px){
  h1{font-size:30px}
  .hero-actions .btn{width:100%}
  .hero-tags{gap:8px}
  .tagline{font-size:12px;padding:6px 11px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important}
  .reveal{opacity:1 !important;transform:none !important}
}