/* roulang page: index */
:root{
  --ink:#14181B;
  --ink-soft:#3A3F44;
  --muted:#6B7076;
  --line:#E4E1DA;
  --line-soft:#EFECE5;
  --paper:#F7F5F0;
  --paper-deep:#F1EFE9;
  --surface:#FFFFFF;
  --accent:#F2620D;
  --accent-soft:#FCEDE3;
  --accent-deep:#B8480A;
  --radius-card:16px;
  --radius-img:20px;
  --radius-btn:10px;
  --radius-input:8px;
  --shadow-card:0 12px 28px rgba(16,19,20,.08);
  --shadow-float:0 18px 40px rgba(16,19,20,.12);
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei","Segoe UI",Roboto,sans-serif;
  --container:1240px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--ink-soft);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer;}
input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:800;letter-spacing:-.02em;line-height:1.2;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:var(--accent);color:#fff;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
@media (min-width:1024px){.container{padding:0 40px;}}
.section{padding:80px 0;}
@media (min-width:1024px){.section{padding:112px 0;}}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;font-weight:600;letter-spacing:.16em;color:var(--muted);
  text-transform:uppercase;
}
.eyebrow::before{content:"";width:6px;height:6px;background:var(--accent);border-radius:1px;}
.section-title{font-size:clamp(26px,3.2vw,38px);line-height:1.2;letter-spacing:-.02em;}
.section-lead{font-size:16px;color:var(--muted);max-width:34em;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--ink);color:#fff;}
.btn-primary:hover{background:var(--accent);transform:translateY(-2px);}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;border-color:var(--ink);transform:translateY(-2px);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-block{width:100%;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--line);
  padding-bottom:2px;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.text-link .arrow{transition:transform .2s var(--ease);}
.text-link:hover{color:var(--accent);border-color:var(--accent);}
.text-link:hover .arrow{transform:translateX(4px);}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(16,19,20,.07);}
.header-inner{display:flex;align-items:center;gap:28px;height:72px;transition:height .24s var(--ease);}
.site-header.is-scrolled .header-inner{height:60px;}
.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{
  width:32px;height:32px;border-radius:9px;background:var(--ink);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
  transition:background .2s var(--ease);
}
.brand:hover .brand-mark{background:var(--accent);}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-main{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:-.01em;}
.brand-sub{font-size:11px;letter-spacing:.16em;color:var(--muted);margin-top:3px;}
.main-nav{display:none;align-items:center;gap:28px;}
@media (min-width:1024px){.main-nav{display:flex;}}
.nav-link{
  position:relative;padding:8px 0;font-size:15px;font-weight:500;color:var(--ink-soft);
  transition:color .18s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--ink);font-weight:600;}
.header-tools{margin-left:auto;display:flex;align-items:center;gap:14px;}
.search{position:relative;display:none;}
@media (min-width:1024px){.search{display:block;}}
.search input{
  width:220px;height:40px;border-radius:999px;border:1px solid var(--line);
  background:var(--paper);padding:0 16px 0 40px;font-size:14px;color:var(--ink);
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.search input::placeholder{color:#9A9E9F;}
.search input:focus{outline:none;border-color:var(--accent);background:#fff;}
.search-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);width:16px;height:16px;color:var(--muted);pointer-events:none;}
.nav-toggle{
  display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
  width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;
  align-items:center;transition:border-color .2s var(--ease);
}
.nav-toggle span{display:block;width:18px;height:1.6px;background:var(--ink);border-radius:2px;transition:transform .24s var(--ease),opacity .2s var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg);}
@media (min-width:1024px){.nav-toggle{display:none;}}
@media (max-width:639px){.header-tools > .btn{display:none;}}

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,19,20,.42);z-index:90;
  opacity:0;visibility:hidden;transition:opacity .26s var(--ease),visibility .26s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,360px);
  background:#fff;z-index:100;padding:22px;
  display:flex;flex-direction:column;
  transform:translateX(100%);transition:transform .3s var(--ease);
  box-shadow:-20px 0 48px rgba(16,19,20,.14);overflow-y:auto;
}
.nav-drawer.is-open{transform:none;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
.drawer-title{font-size:13px;letter-spacing:.16em;color:var(--muted);font-weight:600;}
.drawer-close{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;font-size:16px;color:var(--ink);
}
.drawer-link{
  display:block;padding:15px 2px;border-bottom:1px solid var(--line-soft);
  font-size:16px;font-weight:600;color:var(--ink);
}
.drawer-link:hover{color:var(--accent);}
.drawer-link.is-active{color:var(--accent);}
.drawer-search{position:relative;margin:18px 0 6px;}
.drawer-search input{
  width:100%;height:44px;border-radius:var(--radius-input);border:1px solid var(--line);
  background:var(--paper);padding:0 16px 0 40px;font-size:14px;
}
.drawer-search input:focus{outline:none;border-color:var(--accent);background:#fff;}
.drawer-cta{margin-top:18px;}

/* ---------- hero ---------- */
.hero{background:var(--paper);}
.hero-grid{
  display:grid;grid-template-columns:1fr;gap:44px;align-items:center;
  padding:52px 0 56px;
}
@media (min-width:1024px){
  .hero-grid{grid-template-columns:7fr 5fr;gap:56px;min-height:80vh;padding:64px 0 72px;}
}
.hero-label{margin-bottom:20px;}
.hero-title{
  font-size:clamp(36px,5.4vw,70px);
  font-weight:800;line-height:1.06;letter-spacing:-.02em;color:var(--ink);
  margin-bottom:20px;
}
.hero-sub{font-size:clamp(16px,1.5vw,18px);color:var(--muted);max-width:24em;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
@media (max-width:519px){
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
}
.hero-figure{position:relative;}
.hero-figure img{
  width:100%;aspect-ratio:4/5;object-fit:cover;border-radius:var(--radius-img);
  background:var(--paper-deep);
}
@media (max-width:1023px){.hero-figure img{aspect-ratio:16/10;}}
.hero-stat{
  position:absolute;right:16px;bottom:18px;
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:16px 20px;box-shadow:var(--shadow-float);min-width:170px;
}
@media (min-width:1024px){.hero-stat{right:-14px;bottom:26px;}}
.hero-stat-num{
  display:block;font-size:24px;font-weight:800;color:var(--ink);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;line-height:1.1;
}
.hero-stat-num em{font-style:normal;color:var(--accent);font-size:16px;font-weight:700;margin-left:2px;}
.hero-stat-text{display:block;font-size:12px;color:var(--muted);margin-top:4px;}

/* ---------- metrics ---------- */
.metrics{border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(2,1fr);}
@media (min-width:720px){.metrics{grid-template-columns:repeat(4,1fr);}}
.metric{
  padding:24px 0 26px;border-bottom:1px solid var(--line);
  transition:background .2s var(--ease);
}
@media (min-width:720px){
  .metric{border-bottom:0;padding:28px 0 30px;}
  .metric + .metric{border-left:1px solid var(--line);padding-left:28px;}
}
.metric-num{
  display:block;font-size:clamp(28px,3.2vw,36px);font-weight:800;color:var(--ink);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;line-height:1.1;
}
.metric-num span{color:var(--accent);font-size:.62em;font-weight:700;margin-left:2px;}
.metric-label{display:block;font-size:13px;color:var(--muted);margin-top:6px;}

/* ---------- services ---------- */
.services-grid{display:grid;grid-template-columns:1fr;gap:44px;}
@media (min-width:1024px){
  .services-grid{grid-template-columns:5fr 7fr;gap:64px;align-items:start;}
  .services-head{position:sticky;top:104px;}
}
.services-head .section-title{margin:16px 0 18px;}
.services-head .section-lead{margin-bottom:26px;}
.service-cards{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:640px){.service-cards{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){
  .service-card:nth-child(2),.service-card:nth-child(4){transform:translateY(28px);}
}
.service-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px 26px 26px;display:flex;flex-direction:column;gap:12px;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
}
.service-card:hover{border-color:var(--accent);box-shadow:var(--shadow-card);}
@media (min-width:1024px){
  .service-card:nth-child(2):hover,.service-card:nth-child(4):hover{transform:translateY(24px);}
  .service-card:nth-child(1):hover,.service-card:nth-child(3):hover{transform:translateY(-4px);}
}
.service-num{font-size:12px;font-weight:700;letter-spacing:.16em;color:var(--muted);}
.service-card h3{font-size:19px;line-height:1.35;}
.service-card p{font-size:14.5px;color:var(--muted);line-height:1.7;}
.service-card .text-link{margin-top:auto;align-self:flex-start;}

/* ---------- dark band ---------- */
.band{background:var(--ink);color:#E9E6DF;}
.band .eyebrow{color:#9EA3A6;}
.band .section-title{color:#fff;}
.band .section-lead{color:#A9AEB1;}
.band-head{display:grid;grid-template-columns:1fr;gap:20px;margin-bottom:48px;}
@media (min-width:1024px){
  .band-head{grid-template-columns:7fr 5fr;align-items:end;gap:48px;}
}
.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-card);overflow:hidden;}
@media (min-width:900px){.stat-grid{grid-template-columns:repeat(4,1fr);}}
.stat{background:var(--ink);padding:30px 24px 32px;}
.stat-num{
  display:block;font-size:clamp(28px,3vw,36px);font-weight:800;color:#fff;
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;line-height:1.1;
}
.stat-num span{color:var(--accent);font-size:.6em;font-weight:700;margin-left:2px;}
.stat-label{display:block;font-size:13px;color:#9EA3A6;margin-top:8px;line-height:1.6;}

/* ---------- news ---------- */
.news-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;
  margin-bottom:40px;
}
.news-head .section-title{margin-top:14px;}
.news-grid{display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:768px){.news-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1280px){.news-grid{grid-template-columns:repeat(3,1fr);}}
.news-card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card);border-color:#D9D5CC;}
.news-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--paper-deep);}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-body{padding:22px 24px 22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.badge{
  display:inline-flex;align-items:center;align-self:flex-start;
  padding:4px 12px;border-radius:999px;background:var(--accent-soft);color:var(--accent-deep);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.news-title{font-size:18px;font-weight:700;line-height:1.5;color:var(--ink);}
.news-title a{transition:color .18s var(--ease);}
.news-card:hover .news-title a{color:var(--accent);}
.news-excerpt{
  font-size:14.5px;color:var(--muted);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line-soft);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums;
}
.news-meta .go{color:var(--ink);font-weight:600;transition:color .18s var(--ease);}
.news-card:hover .news-meta .go{color:var(--accent);}
.news-empty{
  border:1px dashed var(--line);border-radius:var(--radius-card);
  background:var(--surface);padding:64px 24px;text-align:center;
}
.news-empty p{font-size:15px;color:var(--muted);margin-bottom:18px;}

/* ---------- cases ---------- */
.case-list{display:flex;flex-direction:column;gap:64px;}
@media (min-width:1024px){.case-list{gap:88px;}}
.case-row{display:grid;grid-template-columns:1fr;gap:28px;align-items:center;}
@media (min-width:1024px){.case-row{grid-template-columns:1fr 1fr;gap:64px;}}
.case-figure{border-radius:var(--radius-img);overflow:hidden;background:var(--paper-deep);}
.case-figure img{width:100%;aspect-ratio:16/11;object-fit:cover;transition:transform .6s var(--ease);}
.case-row:hover .case-figure img{transform:scale(1.03);}
@media (min-width:1024px){
  .case-row--rev .case-figure{order:2;}
}
.case-body h3{font-size:clamp(21px,2.4vw,27px);line-height:1.32;margin:14px 0 14px;}
.case-body p{font-size:15.5px;color:var(--muted);line-height:1.8;}
.case-points{margin:22px 0 24px;display:flex;flex-direction:column;gap:10px;}
.case-points li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14.5px;color:var(--ink-soft);
}
.case-points li::before{
  content:"";flex:0 0 auto;width:6px;height:6px;margin-top:9px;
  background:var(--accent);border-radius:1px;
}

/* ---------- plan ---------- */
.plan-list{border-top:1px solid var(--line);margin-top:44px;}
.plan-row{
  display:grid;grid-template-columns:auto 1fr;gap:8px 20px;
  padding:26px 0;border-bottom:1px solid var(--line);
  transition:transform .22s var(--ease),background .22s var(--ease);
}
@media (min-width:820px){
  .plan-row{grid-template-columns:84px 260px 1fr;align-items:baseline;gap:20px;padding:30px 0;}
}
.plan-row:hover{transform:translateX(4px);}
.plan-idx{
  font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--accent);
  font-variant-numeric:tabular-nums;
}
.plan-title{font-size:18px;font-weight:700;color:var(--ink);line-height:1.4;}
.plan-desc{font-size:14.5px;color:var(--muted);line-height:1.8;}

/* ---------- faq ---------- */
.faq-wrap{max-width:840px;margin:0 auto;}
.faq-head{text-align:center;margin-bottom:36px;}
.faq-head .section-title{margin-bottom:12px;}
.faq-head p{font-size:15px;color:var(--muted);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-of-type{border-top:1px solid var(--line);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 2px;cursor:pointer;list-style:none;
  font-size:17px;font-weight:600;color:var(--ink);
  transition:color .18s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--accent);}
.faq-ico{
  flex:0 0 auto;width:24px;height:24px;position:relative;
  transition:transform .26s var(--ease);
}
.faq-ico::before,.faq-ico::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-ico::before{width:14px;height:1.6px;}
.faq-ico::after{width:1.6px;height:14px;}
.faq-item[open] .faq-ico{transform:rotate(45deg);}
.faq-item[open] .faq-ico::before,.faq-item[open] .faq-ico::after{background:var(--accent);}
.faq-answer{
  padding:0 2px 24px;font-size:15px;line-height:1.85;color:var(--muted);
  max-width:68ch;
}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr;gap:44px;}
@media (min-width:1024px){.contact-grid{grid-template-columns:5fr 7fr;gap:72px;align-items:start;}}
.contact-info .section-title{margin:16px 0 16px;}
.contact-info > p{font-size:15.5px;color:var(--muted);line-height:1.8;margin-bottom:30px;}
.info-list{display:flex;flex-direction:column;gap:18px;}
.info-item{display:flex;gap:14px;align-items:flex-start;}
.info-icon{
  flex:0 0 auto;width:32px;height:32px;border-radius:9px;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--accent);background:#fff;
}
.info-item dt{font-size:12px;letter-spacing:.12em;color:var(--muted);font-weight:600;}
.info-item dd{margin:2px 0 0;font-size:15px;color:var(--ink);font-weight:500;}
.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:30px 26px 30px;box-shadow:0 1px 0 rgba(16,19,20,.02);
}
@media (min-width:768px){.form-card{padding:38px 38px 36px;}}
.form-card h3{font-size:20px;margin-bottom:6px;}
.form-card .form-note{font-size:13.5px;color:var(--muted);margin-bottom:26px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;color:var(--muted);font-weight:600;margin-bottom:7px;}
.field input,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--radius-input);
  background:var(--paper);padding:11px 14px;font-size:15px;color:var(--ink);
  transition:border-color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.field input{height:44px;}
.field textarea{min-height:112px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:#A3A7A8;}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--accent);background:#fff;
  box-shadow:0 0 0 3px rgba(242,98,13,.12);
}
.form-row{display:grid;grid-template-columns:1fr;gap:0;}
@media (min-width:640px){.form-row{grid-template-columns:1fr 1fr;gap:0 18px;}}
.form-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:8px;}
.form-msg{font-size:13px;color:var(--accent-deep);min-height:20px;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#C9CCC9;padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px;padding-bottom:48px;}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:48px;}}
.footer-brand .brand-mark{background:#fff;color:var(--ink);}
.footer-brand .brand-main{color:#fff;}
.footer-brand .brand-sub{color:#8E9396;}
.footer-brand p{font-size:14px;color:#9EA3A6;line-height:1.8;margin-top:18px;max-width:26em;}
.footer-col h4{font-size:12px;letter-spacing:.16em;color:#8E9396;font-weight:600;margin-bottom:16px;text-transform:uppercase;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:14px;color:#C9CCC9;transition:color .18s var(--ease);}
.footer-links a:hover{color:var(--accent);}
.footer-contact li{font-size:14px;color:#C9CCC9;margin-bottom:10px;line-height:1.7;}
.footer-contact li span{display:block;font-size:12px;color:#8E9396;margin-bottom:2px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 26px;
  display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between;
  font-size:13px;color:#8E9396;
}
.footer-bottom a{color:#C9CCC9;border-bottom:1px solid rgba(255,255,255,.18);padding-bottom:1px;transition:color .18s var(--ease);}
.footer-bottom a:hover{color:var(--accent);}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .28s var(--ease),transform .28s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category1 */
:root{
  --ink:#16191A;
  --ink-2:#3A3F44;
  --muted:#6B7076;
  --line:#E4E1DA;
  --paper:#FAF8F3;
  --surface:#FFFFFF;
  --soft:#F1EFE9;
  --accent:#FF5A1F;
  --accent-soft:rgba(255,90,31,.12);
  --r-card:16px;
  --r-img:20px;
  --r-btn:10px;
  --shadow-card:0 12px 28px rgba(16,19,20,.08);
  --shadow-float:0 18px 40px rgba(16,19,20,.12);
  --max:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{
  margin:0;
  color:var(--ink);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.18;
}
p{margin:0;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font:inherit;color:inherit;}
input,textarea{font:inherit;}
svg{display:block;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;}

.container{
  width:100%;
  max-width:var(--max);
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1024px){
  .container{padding:0 40px;}
}

/* ---------- 按钮与文字链 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--ink);color:#fff;border-color:var(--ink);}
.btn-primary:hover{background:var(--accent);border-color:var(--accent);transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{background:var(--ink);color:#fff;border-color:var(--ink);transform:translateY(-2px);}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}

.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--ink);
  border-bottom:1px solid var(--line);
  padding-bottom:2px;
  transition:color .2s ease,border-color .2s ease,gap .2s ease;
}
.link-arrow::after{content:"→";font-size:14px;transition:transform .2s ease;}
.link-arrow:hover{color:var(--accent);border-color:var(--accent);}
.link-arrow:hover::after{transform:translateX(3px);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 2px rgba(16,19,20,.04);
  transition:box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 18px rgba(16,19,20,.07);border-color:#DAD6CD;}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
  transition:height .2s ease;
}
.site-header.is-scrolled .header-inner{height:60px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:32px;height:32px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:9px;
  background:var(--ink);
  color:#fff;
  flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-main{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:-.01em;}
.brand-sub{font-size:11px;letter-spacing:.16em;color:var(--muted);margin-top:3px;}

.main-nav{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;
  padding:10px 14px;
  font-size:15px;
  font-weight:500;
  color:var(--ink-2);
  border-radius:8px;
  transition:color .18s ease,background-color .18s ease;
}
.nav-link:hover{color:var(--ink);background:var(--soft);}
.nav-link.is-active{color:var(--ink);font-weight:700;}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--accent);
}
.header-actions{display:flex;align-items:center;gap:12px;}
.search-box{
  position:relative;
  width:220px;
  flex-shrink:0;
}
.search-box svg{
  position:absolute;
  left:13px;top:50%;
  transform:translateY(-50%);
  width:15px;height:15px;
  color:var(--muted);
  pointer-events:none;
}
.search-box input{
  width:100%;
  height:38px;
  padding:0 14px 0 36px;
  border:1px solid var(--line);
  border-radius:999px;
  background:var(--paper);
  color:var(--ink);
  font-size:14px;
  outline:none;
  transition:border-color .18s ease,background-color .18s ease,box-shadow .18s ease;
}
.search-box input::placeholder{color:#9AA0A6;}
.search-box input:focus{
  background:var(--surface);
  border-color:var(--accent);
  box-shadow:0 0 0 3px var(--accent-soft);
}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--line);
  border-radius:10px;
  background:var(--surface);
  cursor:pointer;
  padding:0;
  align-items:center;
  justify-content:center;
  transition:border-color .18s ease,background-color .18s ease;
}
.nav-toggle:hover{border-color:var(--ink);}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  background:var(--ink);
  border-radius:2px;
  position:relative;
  transition:transform .22s ease,background-color .22s ease;
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;left:0;
  width:18px;height:2px;
  background:var(--ink);
  border-radius:2px;
  transition:transform .22s ease,opacity .22s ease;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{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-top:1px solid var(--line);
  background:var(--surface);
  padding:16px 24px 24px;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer .main-nav{flex-direction:column;align-items:stretch;gap:2px;}
.mobile-drawer .nav-link{padding:13px 12px;font-size:16px;border-radius:10px;}
.mobile-drawer .nav-link.is-active::after{display:none;}
.mobile-drawer .nav-link.is-active{background:var(--soft);}
.mobile-drawer .search-box{width:100%;margin:14px 0 12px;}
.mobile-drawer .btn{width:100%;}

@media (max-width:1023px){
  .main-nav{display:none;}
  .header-actions .search-box{display:none;}
  .header-actions .btn-primary{display:none;}
  .nav-toggle{display:inline-flex;}
  .mobile-drawer .main-nav{display:flex;}
}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  padding:22px 0 0;
  font-size:12px;
  color:var(--muted);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
}
.breadcrumb a{color:var(--muted);transition:color .18s ease;}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{color:#C6C2B8;}
.breadcrumb .current{color:var(--ink);font-weight:600;}

/* ---------- 页面头部 ---------- */
.page-hero{padding:32px 0 0;}
.page-hero-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:36px;
  align-items:center;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--muted);
  font-weight:600;
}
.eyebrow::before{
  content:"";
  width:18px;height:2px;
  background:var(--accent);
  border-radius:2px;
}
.page-hero h1{
  font-size:clamp(32px,4vw,52px);
  line-height:1.1;
  margin:16px 0 18px;
}
.page-hero .lede{
  font-size:17px;
  color:var(--ink-2);
  max-width:560px;
  line-height:1.85;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-media{
  position:relative;
  border-radius:var(--r-img);
  overflow:hidden;
  background:var(--soft);
  aspect-ratio:4/3;
}
.hero-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .5s ease;
}
.hero-media:hover img{transform:scale(1.03);}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:24px;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:999px;
  background:var(--surface);
  border:1px solid var(--line);
  font-size:12px;
  color:var(--ink-2);
  font-weight:500;
}
.badge-accent{background:var(--accent-soft);border-color:rgba(255,90,31,.28);color:#C6410E;}

/* ---------- 指标条 ---------- */
.metrics-strip{
  margin-top:44px;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  display:grid;
  grid-template-columns:repeat(2,1fr);
}
.metric{padding:24px 8px 24px 0;}
.metric + .metric{border-left:1px solid var(--line);padding-left:24px;}
.metric-num{
  font-size:32px;
  font-weight:800;
  color:var(--accent);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
  line-height:1.1;
}
.metric-label{font-size:13px;color:var(--muted);margin-top:6px;}

/* ---------- 板块通用 ---------- */
.section{padding:80px 0 0;}
.section-head{
  display:grid;
  grid-template-columns:1fr;
  gap:16px;
  padding-bottom:36px;
  border-bottom:1px solid var(--line);
  margin-bottom:44px;
}
.section-title{font-size:clamp(26px,3vw,36px);line-height:1.2;}
.section-desc{font-size:15px;color:var(--muted);max-width:620px;}

/* ---------- 服务大卡 ---------- */
.service-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:24px;
}
.service-card{
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease;
}
.service-card:hover{
  border-color:var(--accent);
  box-shadow:var(--shadow-card);
  transform:translateY(-3px);
}
.card-thumb{
  aspect-ratio:16/10;
  overflow:hidden;
  background:var(--soft);
  border-bottom:1px solid var(--line);
}
.card-thumb img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .45s ease;
}
.service-card:hover .card-thumb img{transform:scale(1.03);}
.card-body{padding:26px 24px 28px;display:flex;flex-direction:column;gap:14px;flex:1;}
.card-top{display:flex;align-items:center;gap:12px;}
.card-icon{
  width:38px;height:38px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  background:var(--soft);
  color:var(--ink);
  flex-shrink:0;
  transition:background-color .2s ease,color .2s ease;
}
.service-card:hover .card-icon{background:var(--ink);color:#fff;}
.card-num{
  font-size:12px;
  letter-spacing:.16em;
  color:var(--muted);
  font-weight:600;
}
.card-title{font-size:20px;}
.point-list{display:flex;flex-direction:column;gap:9px;}
.point-list li{
  position:relative;
  padding-left:18px;
  font-size:14px;
  color:var(--ink-2);
  line-height:1.7;
}
.point-list li::before{
  content:"";
  position:absolute;
  left:0;top:8px;
  width:6px;height:6px;
  border-radius:2px;
  background:var(--accent);
}
.card-foot{margin-top:auto;padding-top:6px;}

/* ---------- 流程 ---------- */
.flow-list{border-top:1px solid var(--line);}
.flow-row{
  display:grid;
  grid-template-columns:1fr;
  gap:8px;
  padding:24px 0;
  border-bottom:1px solid var(--line);
  transition:transform .2s ease;
}
.flow-row:hover{transform:translateX(4px);}
.flow-num{
  font-size:13px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--accent);
  font-variant-numeric:tabular-nums;
}
.flow-title{font-size:18px;}
.flow-desc{font-size:14px;color:var(--muted);}

/* ---------- 适用对象 ---------- */
.audience-wrap{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
  align-items:start;
}
.audience-media{
  border-radius:var(--r-img);
  overflow:hidden;
  background:var(--soft);
  aspect-ratio:5/4;
}
.audience-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.audience-media:hover img{transform:scale(1.03);}
.audience-list{display:flex;flex-direction:column;gap:2px;}
.audience-item{
  padding:20px 0;
  border-bottom:1px solid var(--line);
}
.audience-item h3{font-size:17px;margin-bottom:6px;}
.audience-item p{font-size:14px;color:var(--muted);line-height:1.8;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:840px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 0;
  cursor:pointer;
  list-style:none;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--accent);}
.faq-icon{
  flex-shrink:0;
  width:22px;height:22px;
  position:relative;
  transition:transform .25s ease;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--accent);
  border-radius:2px;
}
.faq-icon::before{left:0;top:10px;width:22px;height:2px;}
.faq-icon::after{left:10px;top:0;width:2px;height:22px;}
.faq-item[open] .faq-icon{transform:rotate(45deg);}
.faq-answer{
  padding:0 0 24px;
  font-size:15px;
  line-height:1.85;
  color:var(--ink-2);
  max-width:68ch;
}

/* ---------- CTA 条 ---------- */
.cta-band{
  margin-top:80px;
  background:var(--ink);
  color:#F4F1EA;
  border-radius:var(--r-card);
  padding:48px 28px;
  display:grid;
  grid-template-columns:1fr;
  gap:28px;
  align-items:center;
}
.cta-band h2{color:#fff;font-size:clamp(24px,3vw,32px);}
.cta-band p{color:#B9B5AC;font-size:15px;margin-top:12px;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.cta-band .btn-primary{background:var(--accent);border-color:var(--accent);color:#fff;}
.cta-band .btn-primary:hover{background:#fff;border-color:#fff;color:var(--ink);}
.cta-band .btn-ghost{border-color:rgba(255,255,255,.35);color:#fff;}
.cta-band .btn-ghost:hover{background:#fff;color:var(--ink);border-color:#fff;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;
  background:var(--ink);
  color:#D9D5CC;
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:36px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand .brand-mark{background:var(--accent);color:#fff;}
.footer-brand .brand-main{color:#fff;}
.footer-brand .brand-sub{color:#8E8A82;}
.footer-brand p{font-size:14px;color:#A9A59C;max-width:320px;line-height:1.8;}
.footer-col h4{
  font-size:13px;
  letter-spacing:.16em;
  color:#8E8A82;
  text-transform:uppercase;
  font-weight:600;
  margin-bottom:16px;
}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{
  font-size:14px;
  color:#D9D5CC;
  transition:color .18s ease,padding-left .18s ease;
}
.footer-links a:hover{color:var(--accent);padding-left:3px;}
.footer-contact{display:flex;flex-direction:column;gap:11px;font-size:14px;color:#CFCBC2;}
.footer-contact span{
  display:inline-block;
  min-width:64px;
  color:#8E8A82;
  margin-right:8px;
}
.footer-bottom{
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  font-size:13px;
  color:#8E8A82;
}
.footer-bottom a{color:#CFCBC2;border-bottom:1px solid rgba(255,255,255,.2);transition:color .18s ease,border-color .18s ease;}
.footer-bottom a:hover{color:var(--accent);border-color:var(--accent);}

/* ---------- 入场动效 ---------- */
[data-reveal]{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .28s ease,transform .28s ease;
}
[data-reveal].is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (min-width:640px){
  .metrics-strip{grid-template-columns:repeat(4,1fr);}
  .flow-row{grid-template-columns:80px 220px 1fr;align-items:baseline;gap:24px;}
  .cta-band{padding:56px 48px;}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:40px;}
}
@media (min-width:768px){
  .page-hero-grid{grid-template-columns:7fr 5fr;gap:48px;}
  .service-grid{grid-template-columns:repeat(2,1fr);gap:28px;}
  .section{padding:96px 0 0;}
  .section-head{grid-template-columns:1fr 1fr;align-items:end;}
  .section-desc{justify-self:end;text-align:right;}
  .audience-wrap{grid-template-columns:5fr 7fr;gap:48px;}
  .cta-band{grid-template-columns:1fr auto;}
}
@media (min-width:1024px){
  .service-grid{gap:32px;}
  .service-card:nth-child(even){margin-top:56px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;}
}
@media (min-width:1280px){
  .section{padding:110px 0 0;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
  [data-reveal]{opacity:1;transform:none;}
}

/* roulang page: article */
:root{
  --ink:#14171a;
  --ink-soft:#1f242a;
  --paper:#f7f5f0;
  --white:#ffffff;
  --text:#3a3f44;
  --muted:#6b7076;
  --quiet:#9aa0a6;
  --line:#e4e1da;
  --line-soft:#f1efe9;
  --accent:#ee5a1e;
  --accent-deep:#c8410d;
  --accent-soft:#fdeee7;
  --radius-card:16px;
  --radius-img:20px;
  --radius-btn:10px;
  --radius-input:8px;
  --shadow-card:0 12px 28px rgba(16,19,20,.08);
  --shadow-float:0 18px 40px rgba(16,19,20,.12);
  --container:1240px;
  --ease:cubic-bezier(.2,.7,.2,1);
  --num-font:"SF Pro Display","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--paper);
  color:var(--text);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img,svg{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
table{border-collapse:collapse;width:100%;}
::selection{background:var(--accent);color:#fff;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
@media (min-width:1024px){.container{padding:0 40px;}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:120;background:var(--white);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(16,19,20,.07);border-bottom-color:#d9d5cc;}
.header-inner{display:flex;align-items:center;gap:20px;height:72px;transition:height .25s var(--ease);}
.site-header.is-scrolled .header-inner{height:60px;}
.brand{display:inline-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;flex:0 0 auto;transition:background .25s var(--ease);
}
.brand:hover .brand-mark{background:var(--accent);}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-main{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:-.01em;}
.brand-sub{font-size:11px;letter-spacing:.16em;color:var(--muted);margin-top:2px;}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:10px;}
.nav-link{
  position:relative;padding:9px 12px 11px;font-size:15px;font-weight:500;color:var(--text);
  border-radius:8px;transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform .25s var(--ease);
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--ink);font-weight:600;}
.header-tools{display:flex;align-items:center;gap:12px;margin-left:auto;}
.search-box{position:relative;width:220px;}
.search-box svg{position:absolute;left:13px;top:50%;transform:translateY(-50%);color:var(--quiet);pointer-events:none;}
.search-box input{
  width:100%;height:40px;padding:0 14px 0 38px;border:1px solid var(--line);border-radius:999px;
  background:var(--line-soft);font-size:14px;
  transition:border-color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box input::placeholder{color:var(--quiet);}
.search-box input:focus{outline:none;border-color:var(--accent);background:#fff;box-shadow:0 0 0 3px rgba(238,90,30,.1);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;
  border-radius:var(--radius-btn);font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--ink);color:#fff;}
.btn-primary:hover{background:var(--accent);transform:translateY(-2px);box-shadow:0 10px 20px rgba(238,90,30,.22);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;transform:translateY(-2px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;
  cursor:pointer;position:relative;
}
.nav-toggle span{
  position:absolute;left:11px;right:11px;height:2px;background:var(--ink);border-radius:2px;
  transition:transform .28s var(--ease),opacity .2s var(--ease);
}
.nav-toggle span:nth-child(1){top:14px;}
.nav-toggle span:nth-child(2){top:20px;}
.nav-toggle span:nth-child(3){top:26px;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.mobile-drawer{overflow:hidden;max-height:0;transition:max-height .32s var(--ease);}
.mobile-drawer.is-open{max-height:560px;}
.mobile-drawer .container{padding-top:4px;padding-bottom:22px;}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;padding:14px 0;
  font-size:16px;font-weight:500;color:var(--ink);border-bottom:1px solid var(--line-soft);
}
.drawer-link:last-of-type{border-bottom:0;}
.drawer-link::after{content:"→";color:var(--quiet);font-size:15px;}
.drawer-link.is-active::after{color:var(--accent);}
.drawer-search{margin:16px 0 4px;}
.drawer-search input{
  width:100%;height:44px;border-radius:10px;border:1px solid var(--line);
  background:var(--line-soft);padding:0 14px;font-size:15px;
}
.drawer-search input:focus{outline:none;border-color:var(--accent);background:#fff;}
.drawer-cta{margin-top:16px;}
.drawer-cta .btn{width:100%;}
@media (max-width:1023px){
  .main-nav{display:none;}
  .search-box{display:none;}
  .nav-toggle{display:block;}
  .header-tools .btn-sm{display:none;}
}
@media (min-width:1024px){
  .mobile-drawer{display:none;}
}

/* ---------- breadcrumb ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:12px;color:var(--muted);padding:26px 0 0;
}
.breadcrumb a{color:var(--muted);transition:color .2s var(--ease);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{color:#cdc8bd;}
.breadcrumb .current{color:var(--text);max-width:56ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- article ---------- */
.article-head{padding:20px 0 30px;border-bottom:1px solid var(--line);}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
}
.badge-accent{background:var(--accent-soft);color:var(--accent-deep);}
.article-head h1{
  margin-top:18px;font-size:clamp(28px,3.4vw,40px);line-height:1.24;
  letter-spacing:-.02em;font-weight:800;color:var(--ink);
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:18px;
  font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;
}
.article-meta .dot{width:1px;height:12px;background:var(--line);display:inline-block;}
.article-cover{
  margin:32px 0 0;border-radius:var(--radius-img);overflow:hidden;
  background:var(--line-soft);aspect-ratio:2/1;
}
.article-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.article-cover:hover img{transform:scale(1.03);}

.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr);gap:48px;
  padding:44px 0 72px;
}
.article-main{min-width:0;max-width:760px;}
.article-aside{display:none;}
@media (min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr) 220px;gap:64px;padding:56px 0 88px;}
  .article-main{max-width:720px;}
  .article-aside{display:block;}
}
.aside-inner{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.toc{border:1px solid var(--line);border-radius:var(--radius-card);background:#fff;padding:18px 18px 20px;}
.toc-title{display:block;font-size:12px;letter-spacing:.16em;color:var(--muted);margin-bottom:10px;}
.toc nav{display:flex;flex-direction:column;}
.toc a{
  font-size:14px;line-height:1.5;color:var(--muted);padding:7px 0 7px 11px;
  border-left:2px solid transparent;margin-left:-2px;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.toc a:hover{color:var(--ink);border-left-color:var(--accent);}
.aside-card{
  border:1px solid var(--line);border-radius:var(--radius-card);background:var(--ink);color:#fff;padding:20px;
}
.aside-card strong{display:block;font-size:15px;font-weight:700;letter-spacing:.01em;}
.aside-card p{font-size:13px;line-height:1.75;color:#b6b1a8;margin-top:8px;}
.aside-card .aside-link{
  display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:13px;font-weight:600;color:#fff;
  border-bottom:1px solid rgba(255,255,255,.35);padding-bottom:2px;transition:color .2s var(--ease),border-color .2s var(--ease);
}
.aside-card .aside-link:hover{color:var(--accent);border-color:var(--accent);}

.article-body{font-size:17px;line-height:1.9;color:var(--text);}
.article-body > :first-child{margin-top:0;}
.article-body > * + *{margin-top:1em;}
.article-body h2{
  font-size:24px;line-height:1.42;font-weight:700;color:var(--ink);letter-spacing:-.01em;
  margin-top:40px;padding-bottom:12px;border-bottom:1px solid var(--line);
}
.article-body h3{font-size:19px;line-height:1.5;font-weight:700;color:var(--ink);margin-top:30px;}
.article-body h4{font-size:17px;font-weight:700;color:var(--ink);margin-top:24px;}
.article-body ul,.article-body ol{margin-top:16px;}
.article-body ul li,.article-body ol li{position:relative;padding-left:22px;margin-top:10px;}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;background:var(--accent);border-radius:2px;
}
.article-body ol{counter-reset:artol;}
.article-body ol li::before{
  counter-increment:artol;content:counter(artol) ".";
  position:absolute;left:0;top:0;color:var(--accent);font-weight:700;
  font-family:var(--num-font);font-variant-numeric:tabular-nums;
}
.article-body blockquote{
  margin:30px 0;padding:4px 0 4px 20px;border-left:3px solid var(--accent);
  color:var(--ink);font-size:17px;line-height:1.85;
}
.article-body blockquote p{color:inherit;}
.article-body table{margin:28px 0;border:1px solid var(--line);font-size:15px;background:#fff;}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;}
.article-body th{background:var(--line-soft);color:var(--ink);font-weight:600;font-size:14px;letter-spacing:.02em;}
.article-body tr:last-child td{border-bottom:0;}
.article-body a{color:var(--accent-deep);border-bottom:1px solid rgba(200,65,13,.45);}
.article-body a:hover{border-bottom-color:var(--accent);}
.article-body img{border-radius:var(--radius-img);width:100%;height:auto;}
.article-body figure{margin:28px 0;}
.article-body figcaption{font-size:13px;color:var(--muted);margin-top:10px;line-height:1.7;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:40px 0;}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em;
  background:var(--line-soft);border-radius:4px;padding:2px 6px;
}

.article-tags{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:48px;padding-top:26px;border-top:1px solid var(--line);
}
.article-tags .tags-label{font-size:12px;letter-spacing:.16em;color:var(--quiet);margin-right:4px;}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
  border:1px solid var(--line);background:#fff;font-size:13px;color:var(--muted);
  transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.tag:hover{border-color:var(--accent);color:var(--accent-deep);transform:translateY(-1px);}

.empty-state{
  border:1px solid var(--line);border-radius:var(--radius-card);background:#fff;
  padding:64px 24px;text-align:center;
}
.empty-state h2{font-size:22px;font-weight:700;color:var(--ink);}
.empty-state p{margin-top:12px;font-size:15px;color:var(--muted);}
.empty-state .btn{margin-top:24px;}

/* ---------- related ---------- */
.related{padding:64px 0 84px;border-top:1px solid var(--line);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:30px;}
.section-head h2{font-size:clamp(22px,2.4vw,28px);font-weight:700;color:var(--ink);letter-spacing:-.01em;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--ink);padding-bottom:2px;
  transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.text-link:hover{color:var(--accent);border-color:var(--accent);transform:translateX(3px);}
.related-grid{display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:768px){.related-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.related-grid{grid-template-columns:repeat(3,1fr);}}
.card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card);border-color:#d8d3c8;}
.card-media{aspect-ratio:16/10;background:var(--line-soft);overflow:hidden;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-title{
  font-size:17px;font-weight:700;line-height:1.5;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s var(--ease);
}
.card:hover .card-title{color:var(--accent-deep);}
.card-desc{
  font-size:14px;line-height:1.7;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{margin-top:auto;display:flex;align-items:center;gap:10px;font-size:12px;color:var(--quiet);}
.card-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--line);}
.back-row{margin-top:40px;display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#cfcbc3;padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:40px;padding-bottom:48px;}
@media (min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;}}
.footer-brand .brand-main{color:#fff;}
.footer-brand .brand-sub{color:#9a958c;}
.footer-brand .brand-mark{background:var(--accent);}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.8;color:#9a958c;max-width:34ch;}
.footer-col h4{font-size:13px;letter-spacing:.16em;color:#fff;font-weight:600;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:#9a958c;transition:color .2s var(--ease);}
.footer-links a:hover{color:var(--accent);}
.footer-contact li{font-size:14px;color:#cfcbc3;line-height:1.7;margin-bottom:10px;}
.footer-contact span{display:block;font-size:12px;color:#7d786f;letter-spacing:.08em;margin-bottom:2px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:22px 0 28px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:#8b867d;
}
.footer-bottom a{color:#cfcbc3;border-bottom:1px solid rgba(255,255,255,.25);transition:color .2s var(--ease),border-color .2s var(--ease);}
.footer-bottom a:hover{color:var(--accent);border-color:var(--accent);}

/* ---------- motion ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .28s var(--ease),transform .28s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}
@media (max-width:639px){
  .article-cover{aspect-ratio:16/10;margin-top:24px;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{font-size:21px;}
  .article-body h3{font-size:18px;}
  .article-layout{padding:32px 0 56px;gap:32px;}
  .related{padding:48px 0 64px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;}
  .footer-bottom{flex-direction:column;}
}

/* roulang page: category3 */
:root{
  --ink:#14171A;
  --ink-soft:#3A3F44;
  --muted:#6B7076;
  --line:#E4E1DA;
  --paper:#F7F5F0;
  --paper-2:#F1EFE9;
  --white:#FFFFFF;
  --accent:#FF5A1F;
  --accent-soft:rgba(255,90,31,.10);
  --radius-card:16px;
  --radius-img:20px;
  --radius-btn:10px;
  --radius-input:8px;
  --shadow-hover:0 12px 28px rgba(16,19,20,.08);
  --shadow-float:0 18px 40px rgba(16,19,20,.12);
  --container:1240px;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --font-num:"Helvetica Neue",Arial,"Segoe UI",var(--font-sans);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--ink-soft);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input{font:inherit;}
svg{display:block;}
::selection{background:var(--accent);color:#fff;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1024px){
  .container{padding:0 40px;}
}

h1,h2,h3,h4{color:var(--ink);font-weight:800;letter-spacing:-.01em;line-height:1.24;}
h1{font-size:clamp(32px,4vw,52px);line-height:1.1;letter-spacing:-.02em;}
h2{font-size:clamp(24px,2.6vw,34px);}
h3{font-size:18px;}
p{color:var(--ink-soft);}

.eyebrow{
  display:inline-block;
  font-size:12px;
  font-weight:600;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--muted);
}
.eyebrow--accent{color:var(--accent);}

.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:-.02em;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 24px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  border:1px solid transparent;
  transition:transform .22s ease,background-color .22s ease,color .22s ease,border-color .22s ease,box-shadow .22s ease;
  white-space:nowrap;
}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
.btn-primary{background:var(--ink);color:var(--paper);}
.btn-primary:hover{background:var(--accent);color:#fff;transform:translateY(-2px);}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent;}
.btn-ghost:hover{background:var(--ink);color:var(--paper);transform:translateY(-2px);}
.btn-light{background:var(--white);color:var(--ink);}
.btn-light:hover{background:var(--accent);color:#fff;transform:translateY(-2px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}

.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--ink);
  border-bottom:1px solid var(--ink);
  padding-bottom:2px;
  transition:color .2s ease,border-color .2s ease,gap .2s ease;
}
.text-link:hover{color:var(--accent);border-color:var(--accent);gap:12px;}
.text-link svg{width:14px;height:14px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 0 rgba(16,19,20,.02);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(16,19,20,.06);}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:72px;
  transition:height .25s ease;
}
.site-header.is-scrolled .header-inner{height:60px;}

.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:32px;height:32px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--ink);
  color:var(--paper);
  border-radius:9px;
  flex-shrink:0;
  transition:background-color .22s ease;
}
.brand:hover .brand-mark{background:var(--accent);}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-main{font-size:18px;font-weight:800;color:var(--ink);letter-spacing:-.01em;}
.brand-sub{font-size:11px;letter-spacing:.16em;color:var(--muted);font-weight:500;}

.main-nav{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:8px;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:15px;
  font-weight:500;
  color:var(--ink-soft);
  border-radius:6px;
  transition:color .2s ease,background-color .2s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .24s ease;
}
.nav-link:hover{color:var(--ink);background:var(--paper-2);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--ink);font-weight:700;}

.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.search-box{
  position:relative;
  display:flex;
  align-items:center;
  width:220px;
  height:40px;
  border:1px solid var(--line);
  border-radius:999px;
  background:var(--paper-2);
  padding:0 14px;
  transition:border-color .2s ease,background-color .2s ease,box-shadow .2s ease;
}
.search-box:focus-within{border-color:var(--accent);background:#fff;box-shadow:0 0 0 3px var(--accent-soft);}
.search-box svg{width:15px;height:15px;color:var(--muted);flex-shrink:0;}
.search-box input{
  width:100%;
  height:100%;
  border:0;
  background:transparent;
  outline:none;
  font-size:14px;
  color:var(--ink);
  padding-left:8px;
}
.search-box input::placeholder{color:var(--muted);}

.nav-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--line);
  border-radius:10px;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
  background:#fff;
  transition:border-color .2s ease;
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  background:var(--ink);
  border-radius:2px;
  transition:transform .25s ease,opacity .2s ease;
}
.nav-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- Breadcrumb ---------- */
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  padding:22px 0 0;
  font-size:12px;
  color:var(--muted);
}
.breadcrumb a{color:var(--muted);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{opacity:.5;}
.breadcrumb [aria-current]{color:var(--ink-soft);font-weight:600;}

/* ---------- Page head ---------- */
.page-head{
  position:relative;
  margin-top:20px;
  border-radius:var(--radius-img);
  overflow:hidden;
  background:var(--ink);
  color:var(--paper);
  isolation:isolate;
}
.page-head::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  transform:scale(1.02);
  z-index:-2;
}
.page-head::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(105deg,rgba(16,19,20,.94) 0%,rgba(16,19,20,.80) 52%,rgba(16,19,20,.52) 100%);
  z-index:-1;
}
.page-head-inner{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
  padding:56px 32px 48px;
}
.page-head h1{color:var(--paper);max-width:16em;}
.page-head .lead{
  margin-top:18px;
  font-size:17px;
  line-height:1.8;
  color:rgba(247,245,240,.78);
  max-width:34em;
}
.page-head .eyebrow--accent{color:var(--accent);}
.head-meta{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  align-content:flex-start;
}
.meta-pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 16px;
  border:1px solid rgba(247,245,240,.24);
  border-radius:999px;
  font-size:13px;
  color:rgba(247,245,240,.86);
  background:rgba(255,255,255,.05);
}
.meta-pill strong{color:#fff;font-weight:700;font-family:var(--font-num);font-variant-numeric:tabular-nums;}
@media (min-width:900px){
  .page-head-inner{grid-template-columns:1fr auto;align-items:end;padding:72px 48px 60px;}
  .head-meta{flex-direction:column;align-items:flex-end;}
}

/* ---------- Sections ---------- */
.section{padding:64px 0;}
@media (min-width:1024px){.section{padding:80px 0;}}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:36px;
}
.section-head p{margin-top:10px;max-width:42em;color:var(--muted);font-size:15px;}

/* ---------- Metric cards ---------- */
.metric-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:20px;
}
@media (min-width:640px){.metric-grid{grid-template-columns:repeat(3,1fr);gap:24px;}}
.metric-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:28px 26px 26px;
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.metric-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--ink);}
.metric-value{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:clamp(34px,3.6vw,44px);
  font-weight:800;
  color:var(--accent);
  line-height:1;
  letter-spacing:-.03em;
}
.metric-value small{font-size:.42em;font-weight:700;color:var(--ink);margin-left:6px;letter-spacing:0;}
.metric-label{
  margin-top:14px;
  font-size:15px;
  font-weight:700;
  color:var(--ink);
}
.metric-desc{
  margin-top:6px;
  font-size:13.5px;
  line-height:1.7;
  color:var(--muted);
}

/* ---------- Table ---------- */
.table-panel{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
}
.table-cap{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:18px 22px;
  border-bottom:1px solid var(--line);
  background:var(--paper-2);
}
.table-cap strong{font-size:14px;color:var(--ink);}
.table-cap span{font-size:12.5px;color:var(--muted);}
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;}
table.spec-table{
  width:100%;
  min-width:840px;
  border-collapse:collapse;
  font-size:14.5px;
}
.spec-table caption{
  caption-side:top;
  text-align:left;
  padding:16px 22px 0;
  font-size:12px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--muted);
}
.spec-table th,.spec-table td{
  padding:16px 20px;
  text-align:left;
  border-bottom:1px solid var(--line);
  vertical-align:top;
  line-height:1.65;
}
.spec-table thead th{
  background:var(--paper-2);
  font-size:13px;
  font-weight:700;
  color:var(--ink);
  letter-spacing:.02em;
  white-space:nowrap;
  border-bottom:1px solid var(--line);
}
.spec-table tbody th{
  font-weight:700;
  color:var(--ink);
  white-space:nowrap;
}
.spec-table tbody th,
.spec-table tbody td:first-child{
  position:sticky;
  left:0;
  background:var(--white);
  z-index:2;
  box-shadow:1px 0 0 var(--line);
}
.spec-table thead th:first-child{
  position:sticky;
  left:0;
  z-index:3;
  background:var(--paper-2);
  box-shadow:1px 0 0 var(--line);
}
.spec-table tbody tr{transition:background-color .18s ease;}
.spec-table tbody tr:hover td{background:#FBFAF6;}
.spec-table tbody tr:hover th{background:#FBFAF6;}
.spec-table tbody tr:last-child th,
.spec-table tbody tr:last-child td{border-bottom:0;}
.tag{
  display:inline-block;
  padding:3px 10px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  line-height:1.6;
  background:var(--paper-2);
  color:var(--ink-soft);
  white-space:nowrap;
}
.tag--accent{background:var(--accent-soft);color:#C43E0F;}

/* ---------- Note block ---------- */
.note-block{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
  align-items:start;
  margin-top:48px;
}
@media (min-width:900px){
  .note-block{grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;}
}
.note-block h2{margin-bottom:16px;}
.note-block p + p{margin-top:16px;}
.note-list{margin-top:24px;display:grid;gap:14px;}
.note-list li{
  position:relative;
  padding-left:22px;
  font-size:15px;
  line-height:1.75;
}
.note-list li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:8px;height:8px;
  background:var(--accent);
  border-radius:2px;
}
.note-figure{
  border-radius:var(--radius-img);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--paper-2);
  transition:transform .3s ease,box-shadow .3s ease;
}
.note-figure:hover{box-shadow:var(--shadow-hover);}
.note-figure img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  transition:transform .4s ease;
}
.note-figure:hover img{transform:scale(1.03);}
.note-figure figcaption{
  padding:14px 18px;
  font-size:12.5px;
  color:var(--muted);
  background:var(--white);
  border-top:1px solid var(--line);
}

/* ---------- FAQ ---------- */
.faq-section{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.faq-list{
  max-width:840px;
  margin:0 auto;
  border-top:1px solid var(--line);
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding:22px 4px;
  cursor:pointer;
  list-style:none;
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover .faq-q{color:var(--accent);}
.faq-q{font-size:17px;font-weight:600;color:var(--ink);transition:color .2s ease;}
.faq-icon{
  flex-shrink:0;
  width:24px;height:24px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:20px;
  font-weight:400;
  color:var(--ink);
  transition:transform .26s ease,color .2s ease;
  line-height:1;
}
.faq-item[open] .faq-icon{transform:rotate(45deg);color:var(--accent);}
.faq-a{
  max-width:68ch;
  padding:0 4px 24px;
  font-size:15px;
  line-height:1.85;
  color:var(--ink-soft);
}

/* ---------- CTA band ---------- */
.cta-band{
  position:relative;
  margin:0 auto;
  border-radius:var(--radius-img);
  overflow:hidden;
  isolation:isolate;
  background:var(--ink);
  color:var(--paper);
}
.cta-band::before{
  content:"";
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-3.webp");
  background-size:cover;
  background-position:center;
  z-index:-2;
}
.cta-band::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(16,19,20,.95),rgba(16,19,20,.72));
  z-index:-1;
}
.cta-inner{
  display:grid;
  grid-template-columns:1fr;
  gap:28px;
  padding:52px 32px;
  align-items:center;
}
@media (min-width:900px){
  .cta-inner{grid-template-columns:1fr auto;padding:64px 48px;}
}
.cta-inner h2{color:var(--paper);font-size:clamp(24px,2.8vw,34px);}
.cta-inner p{margin-top:12px;color:rgba(247,245,240,.78);font-size:15px;max-width:38em;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- Footer ---------- */
.site-footer{
  margin-top:80px;
  background:var(--ink);
  color:rgba(247,245,240,.72);
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:36px;
}
@media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr;gap:40px;}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:48px;}}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);color:var(--paper);}
.footer-brand .brand-main{color:var(--paper);}
.footer-brand .brand-sub{color:rgba(247,245,240,.55);}
.footer-brand p{
  margin-top:18px;
  font-size:14px;
  line-height:1.8;
  color:rgba(247,245,240,.62);
  max-width:32em;
}
.footer-col h4{
  color:var(--paper);
  font-size:14px;
  font-weight:700;
  letter-spacing:.06em;
  margin-bottom:16px;
}
.footer-links{display:grid;gap:10px;}
.footer-links a{
  font-size:14px;
  color:rgba(247,245,240,.66);
  transition:color .2s ease,padding-left .2s ease;
}
.footer-links a:hover{color:var(--accent);padding-left:4px;}
.footer-contact{display:grid;gap:12px;font-size:14px;color:rgba(247,245,240,.66);}
.footer-contact li span{
  display:block;
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:rgba(247,245,240,.42);
  margin-bottom:2px;
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  margin-top:48px;
  padding-top:22px;
  border-top:1px solid rgba(247,245,240,.14);
  font-size:12.5px;
  color:rgba(247,245,240,.5);
}
.footer-bottom a{color:rgba(247,245,240,.72);border-bottom:1px solid rgba(247,245,240,.24);transition:color .2s ease,border-color .2s ease;}
.footer-bottom a:hover{color:var(--accent);border-color:var(--accent);}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .28s ease,transform .28s ease;}
.reveal.is-visible{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
}

/* ---------- Responsive header ---------- */
@media (max-width:1023px){
  .search-box{width:170px;}
  .nav-link{padding:8px 9px;font-size:14px;}
}
@media (max-width:900px){
  .nav-toggle{display:inline-flex;}
  .main-nav{
    position:absolute;
    left:0;right:0;
    top:100%;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    margin:0;
    padding:10px 16px 20px;
    background:#fff;
    border-bottom:1px solid var(--line);
    box-shadow:0 18px 32px rgba(16,19,20,.10);
    display:none;
  }
  .main-nav.is-open{display:flex;}
  .nav-link{
    padding:14px 6px;
    font-size:16px;
    border-bottom:1px solid var(--line);
    border-radius:0;
  }
  .nav-link::after{left:6px;right:auto;width:22px;bottom:8px;}
  .nav-link:hover{background:transparent;}
  .search-box{display:none;}
  .header-cta{height:40px;padding:0 16px;font-size:14px;}
}
@media (max-width:560px){
  .header-inner{gap:12px;}
  .header-cta{display:none;}
  .brand-main{font-size:16px;}
  .brand-sub{font-size:10px;}
  .page-head-inner{padding:40px 22px 36px;}
  .cta-inner{padding:40px 22px;}
  .section{padding:52px 0;}
  .footer-bottom{flex-direction:column;}
}

/* roulang page: category2 */
:root{
  --ink:#14171A;
  --ink-soft:#3A3F44;
  --muted:#6B7076;
  --line:#E4E1DA;
  --line-soft:#EFECE5;
  --soft:#F1EFE9;
  --paper:#FBF9F5;
  --white:#FFFFFF;
  --accent:#F45A1E;
  --accent-deep:#C13E0D;
  --radius-card:16px;
  --radius-img:20px;
  --radius-btn:10px;
  --shadow-hover:0 12px 28px rgba(16,19,20,.08);
  --shadow-float:0 18px 40px rgba(16,19,20,.12);
  --ease:cubic-bezier(.4,0,.2,1);
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-soft);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
@media (min-width:1024px){.container{padding:0 40px}}
.num,.tabular{font-variant-numeric:tabular-nums}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 2px rgba(16,19,20,.03);
  transition:box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 22px rgba(16,19,20,.07);border-bottom-color:#DCD8CF}
.header-inner{display:flex;align-items:center;gap:24px;height:var(--header-h);transition:height .24s var(--ease)}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  width:32px;height:32px;border-radius:9px;background:var(--ink);color:#fff;
  display:grid;place-items:center;flex:none;transition:background .24s var(--ease)
}
.brand:hover .brand-mark{background:var(--accent)}
.brand-main{display:block;font-size:18px;font-weight:700;line-height:1.15;letter-spacing:-.01em;color:var(--ink)}
.brand-sub{display:block;font-size:11px;letter-spacing:.16em;line-height:1.2;color:var(--muted);margin-top:2px}
.main-nav{display:flex;align-items:center;gap:28px;flex:1;justify-content:center}
.nav-link{
  position:relative;font-size:15px;color:var(--ink-soft);padding:6px 0;
  transition:color .2s var(--ease);white-space:nowrap
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);border-radius:2px
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink);font-weight:600}
.header-actions{display:flex;align-items:center;gap:14px;flex:none}
.nav-search{position:relative;display:flex;align-items:center}
.nav-search input{
  width:200px;height:38px;border:1px solid var(--line);border-radius:999px;
  padding:0 40px 0 16px;font-size:13px;background:var(--white);color:var(--ink);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease)
}
.nav-search input::placeholder{color:#9AA0A6}
.nav-search input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(244,90,30,.12)}
.nav-search button{
  position:absolute;right:5px;width:28px;height:28px;border:0;background:transparent;
  color:var(--muted);cursor:pointer;display:grid;place-items:center;border-radius:50%;
  transition:color .2s var(--ease),background .2s var(--ease)
}
.nav-search button:hover{color:var(--accent);background:var(--soft)}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:10px;
  background:var(--white);cursor:pointer;padding:0;place-items:center
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;margin:3px auto;transition:transform .24s var(--ease),opacity .24s var(--ease)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:14px;font-weight:600;border:1px solid transparent;cursor:pointer;
  white-space:nowrap;transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease)
}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--accent);color:#fff;transform:translateY(-2px);box-shadow:0 10px 22px rgba(244,90,30,.22)}
.btn-ghost{background:var(--white);border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);border-color:var(--ink);color:#fff;transform:translateY(-2px)}
.btn-sm{height:38px;padding:0 18px;font-size:13px}
.btn-block{width:100%}

/* ---------- Breadcrumb & page head ---------- */
.page-head{padding:44px 0 0}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;color:var(--muted);margin-bottom:30px}
.breadcrumb a{color:var(--muted);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{color:#C3C0B8}
.head-grid{display:grid;gap:40px;align-items:center}
@media (min-width:1024px){.head-grid{grid-template-columns:7fr 5fr;gap:48px}}
.eyebrow{display:inline-block;font-size:12px;letter-spacing:.16em;color:var(--muted);text-transform:uppercase}
.page-title{
  font-size:clamp(32px,4vw,52px);font-weight:800;line-height:1.1;letter-spacing:-.02em;
  color:var(--ink);margin:14px 0 18px
}
.page-lead{font-size:17px;line-height:1.85;color:var(--ink-soft);max-width:580px}
.head-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.head-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}
.chip{
  display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 12px;border-radius:999px;
  background:var(--white);border:1px solid var(--line);font-size:12px;color:var(--muted);
  transition:border-color .2s var(--ease),color .2s var(--ease)
}
.chip:hover{border-color:var(--accent);color:var(--accent-deep)}
.head-visual{position:relative}
.head-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-img);
  background:var(--soft)
}
.float-card{
  position:absolute;right:16px;bottom:16px;background:#fff;border-radius:14px;
  padding:16px 20px;box-shadow:var(--shadow-float);min-width:158px;border:1px solid rgba(228,225,218,.7)
}
.float-num{font-size:28px;font-weight:800;line-height:1;letter-spacing:-.02em;color:var(--accent);font-variant-numeric:tabular-nums}
.float-label{font-size:12px;color:var(--muted);margin-top:8px;line-height:1.4}

/* ---------- Metrics strip ---------- */
.metrics{
  display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  margin-top:52px;
}
@media (min-width:900px){.metrics{grid-template-columns:repeat(4,1fr)}}
.metric{background:var(--paper);padding:24px 20px}
.metric-num{font-size:clamp(26px,3vw,34px);font-weight:800;letter-spacing:-.02em;color:var(--ink);line-height:1;font-variant-numeric:tabular-nums}
.metric-num em{font-style:normal;font-size:14px;font-weight:600;color:var(--muted);margin-left:4px;letter-spacing:0}
.metric-label{font-size:13px;color:var(--muted);margin-top:10px}

/* ---------- Sections ---------- */
.section{padding:78px 0}
.section-tight{padding:64px 0}
.section-head{display:grid;gap:14px;max-width:720px}
.section-head h2{
  font-size:clamp(24px,2.7vw,34px);font-weight:800;letter-spacing:-.02em;
  line-height:1.22;color:var(--ink)
}
.section-head p{font-size:15.5px;line-height:1.85;color:var(--ink-soft)}
.section-head-row{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--line);padding-bottom:2px;
  transition:color .22s var(--ease),border-color .22s var(--ease),gap .22s var(--ease)
}
.link-arrow:hover{color:var(--accent);border-color:var(--accent);gap:10px}
.link-arrow svg{transition:transform .22s var(--ease)}

/* ---------- Timeline ---------- */
.timeline{margin-top:44px;position:relative}
.tl-item{
  display:grid;grid-template-columns:56px 1px minmax(0,1fr);
  gap:0 18px;padding-bottom:26px;
}
@media (min-width:768px){
  .tl-item{grid-template-columns:96px 1px minmax(0,1fr);gap:0 28px;padding-bottom:30px}
}
.tl-item:last-child{padding-bottom:0}
.tl-date{text-align:right;padding-top:16px}
.tl-day{display:block;font-size:22px;font-weight:800;line-height:1;letter-spacing:-.02em;color:var(--ink);font-variant-numeric:tabular-nums}
@media (min-width:768px){.tl-day{font-size:28px}}
.tl-mon{display:block;font-size:11px;letter-spacing:.14em;color:var(--muted);margin-top:7px}
.tl-axis{position:relative;background:var(--line);border-radius:2px}
.tl-axis::before{
  content:"";position:absolute;top:22px;left:50%;width:9px;height:9px;border-radius:50%;
  background:var(--accent);transform:translateX(-50%);box-shadow:0 0 0 4px var(--paper)
}
.tl-item:last-child .tl-axis{background:linear-gradient(180deg,var(--line) 0%,var(--line) 60%,transparent 100%)}
.tl-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px 20px;transition:border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease)
}
@media (min-width:768px){.tl-card{padding:26px 28px}}
.tl-card:hover{border-color:#D8D4CA;transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.tl-card:hover h3{color:var(--accent-deep)}
.tl-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:12px}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:var(--soft);border:1px solid var(--line);font-size:11px;letter-spacing:.06em;color:var(--ink-soft)
}
.badge-accent{background:rgba(244,90,30,.09);border-color:rgba(244,90,30,.28);color:var(--accent-deep)}
.tl-time{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}
.tl-card h3{font-size:18px;font-weight:700;line-height:1.42;letter-spacing:-.01em;color:var(--ink);margin-bottom:8px;transition:color .2s var(--ease)}
@media (min-width:768px){.tl-card h3{font-size:19.5px}}
.tl-card p{font-size:14.5px;line-height:1.78;color:var(--ink-soft)}
.tl-card .link-arrow{margin-top:16px}

/* ---------- Dimension cards ---------- */
.dim-grid{display:grid;gap:24px;margin-top:40px;grid-template-columns:1fr}
@media (min-width:768px){.dim-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.dim-grid{grid-template-columns:repeat(3,1fr)}}
.dim-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;display:flex;flex-direction:column;
  transition:box-shadow .26s var(--ease),transform .26s var(--ease),border-color .26s var(--ease)
}
.dim-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px);border-color:#D8D4CA}
.dim-card img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:12px;margin-bottom:20px;background:var(--soft)
}
.dim-card h3{font-size:17.5px;font-weight:700;color:var(--ink);letter-spacing:-.01em;margin-bottom:10px}
.dim-card p{font-size:14.5px;line-height:1.78;color:var(--ink-soft)}
.dim-list{display:grid;gap:8px;margin-top:16px}
.dim-list li{position:relative;padding-left:16px;font-size:13.5px;color:var(--muted)}
.dim-list li::before{
  content:"";position:absolute;left:0;top:.66em;width:6px;height:6px;border-radius:1px;background:var(--accent)
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:840px;margin-top:36px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:22px 0;font-size:16.5px;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(--accent-deep)}
.faq-icon{position:relative;width:22px;height:22px;flex:none;transition:transform .26s var(--ease)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--ink);transform:translate(-50%,-50%);border-radius:1px;transition:background .2s var(--ease)}
.faq-icon::before{width:14px;height:1.6px}
.faq-icon::after{width:1.6px;height:14px}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-item[open] .faq-icon::before,.faq-item[open] .faq-icon::after{background:var(--accent)}
.faq-answer{padding:0 0 24px;font-size:15px;line-height:1.85;color:var(--ink-soft);max-width:68ch}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--ink);color:#fff;border-radius:var(--radius-img);
  padding:44px 26px;display:grid;gap:26px;
  position:relative;overflow:hidden
}
@media (min-width:1024px){.cta-band{padding:56px 48px;grid-template-columns:1fr auto;align-items:center;gap:40px}}
.cta-band::after{
  content:"";position:absolute;right:-90px;top:-90px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(244,90,30,.32),transparent 68%);pointer-events:none
}
.cta-band h2{font-size:clamp(23px,2.6vw,32px);font-weight:800;letter-spacing:-.02em;line-height:1.24;color:#fff}
.cta-band p{font-size:15px;line-height:1.8;color:rgba(255,255,255,.72);margin-top:12px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:1}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{background:var(--accent);color:#fff;transform:translateY(-2px)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.36);color:#fff}
.btn-outline-light:hover{background:#fff;border-color:#fff;color:var(--ink);transform:translateY(-2px)}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:64px 0 28px;margin-top:78px}
.footer-grid{display:grid;gap:38px;grid-template-columns:1fr}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:44px}}
.footer-brand .brand{margin-bottom:16px}
.site-footer .brand-mark{background:#fff;color:var(--ink)}
.site-footer .brand:hover .brand-mark{background:var(--accent);color:#fff}
.site-footer .brand-main{color:#fff}
.site-footer .brand-sub{color:rgba(255,255,255,.5)}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:340px}
.footer-col h4{
  font-size:12px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;
  color:rgba(255,255,255,.46);margin-bottom:16px
}
.footer-links{display:grid;gap:10px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.76);transition:color .2s var(--ease)}
.footer-links a:hover{color:#fff}
.footer-contact{display:grid;gap:12px;font-size:14px;color:rgba(255,255,255,.76)}
.footer-contact span{display:block;font-size:12px;color:rgba(255,255,255,.42);margin-bottom:2px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);margin-top:44px;padding-top:20px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12.5px;color:rgba(255,255,255,.5)
}
.footer-bottom a{color:rgba(255,255,255,.72);border-bottom:1px solid rgba(255,255,255,.24)}
.footer-bottom a:hover{color:#fff;border-color:#fff}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .28s var(--ease),transform .28s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

/* ---------- Responsive nav ---------- */
@media (max-width:1180px){
  .nav-search{display:none}
  .main-nav{gap:22px}
}
@media (max-width:960px){
  .nav-toggle{display:grid}
  .main-nav{
    position:fixed;left:0;right:0;top:var(--header-h);
    flex-direction:column;align-items:stretch;justify-content:flex-start;gap:0;
    background:#fff;border-bottom:1px solid var(--line);
    padding:10px 24px 24px;box-shadow:0 20px 34px rgba(16,19,20,.1);
    opacity:0;transform:translateY(-10px);pointer-events:none;
    transition:opacity .24s var(--ease),transform .24s var(--ease)
  }
  .main-nav.is-open{opacity:1;transform:none;pointer-events:auto}
  .nav-link{padding:15px 0;border-bottom:1px solid var(--line-soft);font-size:16px}
  .nav-link::after{display:none}
  .nav-link.is-active{color:var(--accent-deep)}
  .header-actions .btn{display:none}
  .header-inner{gap:14px}
}
@media (max-width:640px){
  .page-head{padding-top:30px}
  .section{padding:58px 0}
  .section-tight{padding:48px 0}
  .head-actions .btn{flex:1 1 auto}
  .float-card{padding:13px 16px;min-width:132px;right:12px;bottom:12px}
  .float-num{font-size:24px}
  .metrics{margin-top:38px}
  .metric{padding:20px 16px}
  .tl-item{grid-template-columns:48px 1px minmax(0,1fr);gap:0 14px}
  .tl-day{font-size:19px}
  .tl-card{padding:18px 16px}
  .cta-band{padding:36px 22px}
  .site-footer{margin-top:56px;padding:52px 0 24px}
}

/* roulang page: category4 */
:root{
  --ink:#16181A;
  --ink-soft:#3A3F44;
  --muted:#6B7076;
  --line:#E4E1DA;
  --line-strong:#D6D2C8;
  --paper:#F7F5F0;
  --paper-deep:#F1EFE9;
  --card:#FFFFFF;
  --accent:#EE5A24;
  --accent-soft:rgba(238,90,36,.10);
  --radius-card:16px;
  --radius-img:20px;
  --radius-btn:10px;
  --radius-input:8px;
  --shadow-card:0 12px 28px rgba(16,19,20,.08);
  --shadow-float:0 18px 40px rgba(16,19,20,.12);
  --container:1240px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  --font-num:"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(--paper);
  color:var(--ink-soft);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:800;letter-spacing:-.02em;line-height:1.2}
p{margin:0}
ul,ol{margin:0;padding:0}
input,textarea,select{font-family:inherit;font-size:15px}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
@media (min-width:1024px){.container{padding:0 40px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 18px rgba(16,19,20,.07);border-bottom-color:var(--line-strong)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px;transition:height .24s var(--ease)}
.site-header.is-scrolled .header-inner{height:60px}

.brand{display:inline-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;flex:0 0 auto;
}
.brand-main{display:block;font-size:18px;font-weight:800;letter-spacing:-.01em;line-height:1.15;color:var(--ink)}
.brand-sub{display:block;font-size:11px;letter-spacing:.16em;color:var(--muted);line-height:1.25}

.main-nav{display:flex;align-items:center;gap:2px;margin-left:4px}
.nav-link{
  position:relative;display:inline-block;padding:10px 12px;border-radius:8px;
  font-size:15px;color:var(--ink-soft);
  transition:color .18s var(--ease),background .18s var(--ease);
}
.nav-link:hover{color:var(--ink);background:var(--paper)}
.nav-link.is-active{color:var(--ink);font-weight:700}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:1px;height:2px;
  background:var(--accent);border-radius:2px;
}

.header-tools{margin-left:auto;display:flex;align-items:center;gap:14px}
.search{position:relative;display:flex;align-items:center}
.search svg{position:absolute;left:13px;color:var(--muted);pointer-events:none}
.search input{
  width:220px;height:40px;padding:0 14px 0 36px;
  border:1px solid var(--line);border-radius:999px;background:var(--paper);
  color:var(--ink);font-size:14px;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease);
}
.search input::placeholder{color:var(--muted)}
.search input:focus{outline:none;background:#fff;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  border:1px solid transparent;cursor:pointer;
  font-size:15px;font-weight:700;line-height:1;letter-spacing:0;
  transition:transform .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow-card)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line-strong)}
.btn-ghost:hover{background:var(--ink);color:#fff;border-color:var(--ink);transform:translateY(-2px)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn-block{width:100%}

.nav-toggle{
  display:none;width:42px;height:42px;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;
  transition:border-color .18s var(--ease),background .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--line-strong);background:var(--paper)}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .24s var(--ease),opacity .2s var(--ease)}
.nav-toggle span+span{margin-top:4px}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.mobile-nav{display:none;border-top:1px solid var(--line);background:#fff;padding:8px 24px 24px}
.mobile-nav.is-open{display:block}
.mobile-nav a.m-link{
  display:block;padding:13px 0;border-bottom:1px solid var(--line);
  font-size:15px;color:var(--ink-soft);
}
.mobile-nav a.m-link.is-active{color:var(--ink);font-weight:700}
.mobile-nav .m-search{position:relative;display:flex;align-items:center;margin:16px 0 6px}
.mobile-nav .m-search svg{position:absolute;left:13px;color:var(--muted)}
.mobile-nav .m-search input{
  width:100%;height:44px;padding:0 14px 0 38px;border:1px solid var(--line);
  border-radius:var(--radius-input);background:var(--paper);font-size:14px;
}
.mobile-nav .btn{margin-top:14px}

/* ---------- breadcrumb ---------- */
.crumb-bar{padding:22px 0 0}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;color:var(--muted)}
.breadcrumb a{color:var(--muted);transition:color .18s var(--ease)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{color:var(--line-strong)}
.breadcrumb .current{color:var(--ink-soft)}

/* ---------- page hero ---------- */
.page-hero{padding:36px 0 56px;border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:56px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;color:var(--accent);font-weight:700;
  border:1px solid rgba(238,90,36,.35);border-radius:999px;padding:6px 14px;
  background:#fff;
}
.page-hero h1{
  margin-top:20px;
  font-size:clamp(32px,4vw,52px);
  font-weight:800;line-height:1.12;letter-spacing:-.025em;
}
.page-hero .lede{margin-top:20px;font-size:17px;line-height:1.85;color:var(--ink-soft);max-width:640px}
.hero-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:26px}
.meta-chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border:1px solid var(--line);border-radius:999px;background:#fff;
  font-size:13px;color:var(--muted);
}
.meta-chip strong{color:var(--ink);font-family:var(--font-num);font-variant-numeric:tabular-nums;font-weight:700}
.hero-figure{position:relative}
.hero-figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--radius-img);
  background:var(--paper-deep);
}
.float-card{
  position:absolute;right:-14px;bottom:-18px;
  background:#fff;border-radius:14px;padding:16px 20px;
  box-shadow:var(--shadow-float);border:1px solid var(--line);
  min-width:180px;
}
.float-card .num{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:32px;font-weight:800;color:var(--accent);line-height:1;
}
.float-card .cap{display:block;margin-top:8px;font-size:12px;color:var(--muted);letter-spacing:.04em}

/* ---------- guide layout ---------- */
.guide-wrap{padding:72px 0 0}
.guide-layout{display:grid;grid-template-columns:248px minmax(0,1fr);gap:48px;align-items:start}
@media (min-width:1280px){.guide-layout{grid-template-columns:272px minmax(0,1fr);gap:64px}}

.toc{
  position:sticky;top:96px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px 20px;
}
.toc h2{
  font-size:12px;letter-spacing:.16em;color:var(--muted);font-weight:700;
  text-transform:uppercase;margin-bottom:14px;
}
.toc ol{list-style:none;counter-reset:toc}
.toc li+li{margin-top:2px}
.toc a{
  display:flex;gap:10px;align-items:baseline;
  padding:8px 10px;border-radius:8px;font-size:14px;color:var(--ink-soft);
  transition:background .18s var(--ease),color .18s var(--ease);
}
.toc a::before{
  counter-increment:toc;content:counter(toc,decimal-leading-zero);
  font-family:var(--font-num);font-size:11px;color:var(--muted);letter-spacing:.06em;
}
.toc a:hover{background:var(--paper);color:var(--ink)}
.toc-foot{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);font-size:12px;color:var(--muted);line-height:1.7}

.guide-body{max-width:780px}
.guide-section{margin-bottom:56px;scroll-margin-top:96px}
.guide-section:last-of-type{margin-bottom:40px}
.sec-head{display:flex;align-items:flex-start;gap:14px;padding-bottom:14px;border-bottom:1px solid var(--line);margin-bottom:22px}
.sec-index{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:12px;font-weight:700;letter-spacing:.1em;color:var(--accent);
  padding-top:6px;flex:0 0 auto;
}
.sec-head h2{font-size:24px;line-height:1.35}
.guide-body p{font-size:16.5px;line-height:1.9;color:var(--ink-soft)}
.guide-body p+p{margin-top:1em}
.guide-body strong{color:var(--ink);font-weight:700}

.point-list{list-style:none;margin:20px 0 0;display:grid;gap:12px}
.point-list li{position:relative;padding-left:22px;font-size:15.5px;line-height:1.85}
.point-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;
  background:var(--accent);border-radius:2px;
}

.steps{list-style:none;counter-reset:step;margin-top:22px;display:grid;gap:14px}
.steps li{
  counter-increment:step;
  display:grid;grid-template-columns:40px minmax(0,1fr);gap:16px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px 22px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.steps li::before{
  content:counter(step,decimal-leading-zero);
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:13px;font-weight:700;color:var(--accent);
  border:1px solid rgba(238,90,36,.35);border-radius:999px;
  width:40px;height:40px;display:grid;place-items:center;
}
.steps li:hover{transform:translateY(-2px);box-shadow:var(--shadow-card);border-color:var(--line-strong)}
.steps h3{font-size:16px;margin-bottom:6px;line-height:1.5}
.steps p{font-size:15px;line-height:1.8;color:var(--ink-soft)}

.note-box{
  margin-top:24px;padding:20px 22px;background:var(--card);
  border:1px solid var(--line);border-left:3px solid var(--accent);
  border-radius:12px;
}
.note-box .note-label{
  display:block;font-size:12px;letter-spacing:.16em;color:var(--accent);
  font-weight:700;margin-bottom:8px;
}
.note-box p{font-size:15px;line-height:1.8}

.inline-figure{margin-top:26px}
.inline-figure img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  border-radius:var(--radius-img);background:var(--paper-deep);
}
.inline-figure figcaption{margin-top:10px;font-size:12.5px;color:var(--muted)}

/* ---------- faq ---------- */
.faq-section{padding:72px 0 0}
.section-head{max-width:760px;margin-bottom:32px}
.section-head .tag{
  display:inline-block;font-size:12px;letter-spacing:.16em;color:var(--accent);
  font-weight:700;margin-bottom:12px;
}
.section-head h2{font-size:clamp(26px,3vw,36px)}
.section-head p{margin-top:14px;font-size:16px;line-height:1.85;color:var(--ink-soft)}
.faq-list{max-width:840px;display:grid;gap:0}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;cursor:pointer;list-style:none;
  font-size:17px;font-weight:700;color:var(--ink);
  transition:color .18s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--accent)}
.faq-icon{position:relative;flex:0 0 auto;width:18px;height:18px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--ink);border-radius:2px;
  transition:transform .24s var(--ease),background .18s 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::before,.faq-item[open] .faq-icon::after{transform:rotate(45deg);background:var(--accent)}
.faq-a{padding:0 4px 24px;max-width:680px}
.faq-a p{font-size:15px;line-height:1.85;color:var(--ink-soft)}

/* ---------- back links ---------- */
.back-links{max-width:840px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:32px}
.link-card{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.link-card:hover{transform:translateY(-2px);border-color:var(--accent);box-shadow:var(--shadow-card)}
.link-card .lc-title{font-size:15px;font-weight:700;color:var(--ink)}
.link-card .lc-desc{display:block;margin-top:4px;font-size:13px;color:var(--muted)}
.link-card .arrow{font-family:var(--font-num);color:var(--accent);font-weight:700;transition:transform .22s var(--ease)}
.link-card:hover .arrow{transform:translateX(4px)}

/* ---------- cta band ---------- */
.cta-section{padding:88px 0 0}
.cta-band{
  background:var(--ink);color:#EDEAE3;border-radius:24px;
  padding:48px;display:grid;grid-template-columns:minmax(0,1fr) auto;
  gap:32px;align-items:center;
}
.cta-band h2{color:#fff;font-size:clamp(24px,2.6vw,32px);line-height:1.3}
.cta-band p{margin-top:14px;font-size:15.5px;line-height:1.85;color:rgba(237,234,227,.72);max-width:620px}
.cta-actions{display:flex;flex-direction:column;gap:12px;min-width:200px}
.cta-actions .btn-primary{background:var(--accent);color:#fff}
.cta-actions .btn-primary:hover{background:#fff;color:var(--ink)}
.cta-actions .btn-ghost{background:transparent;color:#EDEAE3;border-color:rgba(237,234,227,.35)}
.cta-actions .btn-ghost:hover{background:#fff;color:var(--ink);border-color:#fff}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#EDEAE3;padding:72px 0 28px;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .brand{color:#fff}
.footer-brand .brand-mark{background:#fff;color:var(--ink)}
.footer-brand .brand-main{color:#fff}
.footer-brand .brand-sub{color:rgba(237,234,227,.6)}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(237,234,227,.68);max-width:330px}
.footer-col h4{
  margin:0 0 16px;font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:rgba(237,234,227,.5);font-weight:700;
}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:#EDEAE3;transition:color .18s var(--ease)}
.footer-links a:hover{color:var(--accent)}
.footer-contact{list-style:none;display:flex;flex-direction:column;gap:12px;font-size:14px;color:rgba(237,234,227,.78)}
.footer-contact span{display:block;font-size:11px;letter-spacing:.14em;color:rgba(237,234,227,.45);margin-bottom:4px}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(237,234,227,.16);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(237,234,227,.6);
}
.footer-bottom a{color:rgba(237,234,227,.82);border-bottom:1px solid rgba(237,234,227,.3);transition:color .18s var(--ease),border-color .18s var(--ease)}
.footer-bottom a:hover{color:var(--accent);border-color:var(--accent)}

/* ---------- reveal ---------- */
[data-reveal]{opacity:0;transform:translateY(12px);transition:opacity .28s var(--ease),transform .28s var(--ease)}
[data-reveal].is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important}
  [data-reveal]{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .hero-grid{gap:40px}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .search{display:none}
  .nav-toggle{display:inline-flex}
  .header-tools{gap:10px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .page-hero{padding:28px 0 44px}
  .float-card{right:12px;bottom:-16px}
  .guide-layout{grid-template-columns:1fr;gap:32px}
  .toc{position:static}
  .cta-band{grid-template-columns:1fr;padding:36px}
  .cta-actions{flex-direction:row;flex-wrap:wrap}
  .cta-actions .btn{flex:1 1 160px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .guide-wrap{padding:48px 0 0}
  .faq-section{padding:56px 0 0}
  .cta-section{padding:64px 0 0}
  .site-footer{padding:56px 0 24px;margin-top:64px}
  .steps li{grid-template-columns:1fr;gap:12px;padding:18px}
  .steps li::before{width:34px;height:34px;font-size:12px}
  .back-links{grid-template-columns:1fr}
  .guide-section{margin-bottom:44px}
  .sec-head h2{font-size:21px}
  .page-hero .lede{font-size:16px}
  .float-card{padding:14px 16px;min-width:150px}
  .float-card .num{font-size:26px}
}
@media (max-width:519px){
  .container{padding:0 20px}
  .brand-main{font-size:16px}
  .brand-sub{font-size:10px;letter-spacing:.12em}
  .footer-grid{grid-template-columns:1fr}
  .cta-band{padding:28px;border-radius:18px}
  .hero-meta .meta-chip{font-size:12px;padding:6px 12px}
  .faq-item summary{font-size:15.5px;padding:18px 2px}
}