/* roulang page: index */
:root{
  --ink:#0F2A24;
  --ink-mid:#16403A;
  --ink-light:#2C6A5C;
  --accent:#FF5A2B;
  --accent-soft:#FFE8DF;
  --paper:#F7F5F0;
  --surface:#FFFFFF;
  --mist:#E4EEE8;
  --line:#E2DED6;
  --text:#1C1F1D;
  --muted:#6B716C;
  --danger:#B4432E;
  --r-card:16px;
  --r-img:12px;
  --r-input:10px;
  --r-tag:6px;
  --r-btn:999px;
  --sh-1:0 1px 2px rgba(15,42,36,.06);
  --sh-2:0 12px 28px -12px rgba(15,42,36,.18);
  --max:1200px;
  --ease:200ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:"Noto Sans SC","Source Han Sans SC",system-ui,"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{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(--ink-light);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--max);margin-inline:auto;padding-inline:20px}
@media(min-width:768px){.container{padding-inline:32px}}
@media(min-width:1280px){.container{padding-inline:48px}}
section{padding-block:clamp(56px,7vw,104px)}
.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 18px;z-index:999;border-radius:0 0 8px 0}
.skip:focus{left:0}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,245,240,.94);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease),background var(--ease);
}
.site-header.is-scrolled{
  background:rgba(247,245,240,.82);
  backdrop-filter:blur(10px);
  box-shadow:0 8px 24px -18px rgba(15,42,36,.4);
}
.header-inner{display:flex;align-items:center;gap:16px;height:64px}
@media(min-width:1024px){.header-inner{height:72px;gap:28px}}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand-mark{
  width:26px;height:26px;flex:none;border-radius:7px;
  background:var(--ink);display:grid;place-items:center;
}
.brand-mark svg{width:15px;height:15px;display:block}
.brand-text{
  font-weight:800;font-size:16px;line-height:1.2;color:var(--ink);
  letter-spacing:-.01em;white-space:nowrap;
}
@media(min-width:1024px){.brand-text{font-size:18px}}
.main-nav{display:none}
@media(min-width:1024px){
  .main-nav{display:flex;align-items:center;gap:6px;margin-inline:auto}
}
.nav-link{
  position:relative;display:inline-block;padding:8px 14px;
  font-size:15px;font-weight:600;color:var(--muted);
  border-radius:8px;transition:color var(--ease),background var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--ink);border-radius:2px;transform:scaleX(0);
  transform-origin:left;transition:transform var(--ease);
}
.nav-link:hover{color:var(--ink);background:rgba(15,42,36,.04)}
.nav-link.is-active{color:var(--ink)}
.nav-link.is-active::after{transform:scaleX(1)}
.header-cta{margin-left:auto;flex:none}
@media(min-width:1024px){.header-cta{margin-left:0}}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);border:1px solid transparent;
  font-weight:700;font-size:15px;line-height:1;
  padding:14px 26px;cursor:pointer;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
  text-align:center;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:#EB4A1C;box-shadow:var(--sh-2)}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-outline:hover{background:var(--mist)}
.btn-sm{padding:11px 20px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-loading{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--ink-light);font-weight:700;font-size:15px;
  position:relative;padding-bottom:2px;
}
.link-arrow::before{
  content:"";position:absolute;left:0;bottom:0;height:1.5px;width:0;
  background:currentColor;transition:width var(--ease);
}
.link-arrow:hover::before{width:100%}
.link-arrow svg{width:13px;height:13px;transition:transform var(--ease)}
.link-arrow:hover svg{transform:translateX(3px)}

/* ============ Tags ============ */
.tag{
  display:inline-flex;align-items:center;
  font-size:12px;font-weight:600;line-height:1.6;
  padding:3px 10px;border-radius:var(--r-tag);
  background:var(--mist);color:var(--ink-mid);
  white-space:nowrap;
}
.tag-warm{background:var(--accent-soft);color:#9C3410}
.tag-solid{background:var(--ink);color:#fff}
.eyebrow{
  display:inline-flex;align-items:center;gap:12px;
  font-size:12px;font-weight:600;letter-spacing:.22em;
  color:var(--ink-light);text-transform:uppercase;
}
.eyebrow::before,.eyebrow::after{content:"";width:24px;height:1px;background:currentColor;opacity:.5}
.eyebrow::after{display:none}

/* ============ Hero ============ */
.hero{padding-block:clamp(40px,5vw,72px) 0;position:relative;overflow:hidden}
.hero-grid{display:grid;gap:36px}
@media(min-width:1024px){
  .hero-grid{grid-template-columns:5fr 7fr;gap:56px;align-items:center}
}
.hero-title{
  font-size:clamp(32px,5vw,60px);
  font-weight:800;line-height:1.08;letter-spacing:-.02em;
  color:var(--ink);margin-top:18px;
}
.hero-sub{
  margin-top:20px;font-size:17px;color:var(--muted);
  max-width:32em;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-points{display:flex;flex-wrap:wrap;gap:22px;margin-top:34px}
.hero-point{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--ink-mid)}
.hero-point svg{width:16px;height:16px;color:var(--ink-light);flex:none}
.hero-media{position:relative}
.hero-figure{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  aspect-ratio:16/10;background:var(--mist);box-shadow:var(--sh-2);
}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(15,42,36,0) 45%,rgba(15,42,36,.42) 100%);
}
.hero-badge{
  position:absolute;right:14px;bottom:14px;z-index:2;
  background:var(--accent-soft);color:#7A2A0C;
  font-size:12px;font-weight:700;line-height:1.5;
  padding:7px 12px;border-radius:8px;
  box-shadow:0 6px 16px -10px rgba(15,42,36,.5);
}
.stat-bar{
  margin-top:clamp(36px,5vw,56px);
  border-top:1px solid var(--line);
  display:grid;grid-template-columns:repeat(2,1fr);
}
@media(min-width:768px){.stat-bar{grid-template-columns:repeat(4,1fr)}}
.stat{
  padding:22px 8px 26px;
  border-right:1px solid var(--line);
}
.stat:last-child{border-right:none}
@media(max-width:767px){
  .stat:nth-child(2n){border-right:none}
  .stat:nth-child(-n+2){border-bottom:1px solid var(--line)}
}
.stat-num{
  font-family:"Inter",system-ui,sans-serif;
  font-feature-settings:"tnum";
  font-size:clamp(26px,3.4vw,38px);font-weight:800;line-height:1.1;
  color:var(--ink);letter-spacing:-.02em;
}
.stat-num span{font-size:15px;font-weight:700;margin-left:3px;color:var(--ink-light)}
.stat-label{font-size:13px;color:var(--muted);margin-top:6px}

/* ============ Section head ============ */
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;gap:16px;justify-content:space-between;margin-bottom:clamp(28px,4vw,46px)}
.section-title{
  font-size:clamp(24px,3.2vw,38px);font-weight:700;line-height:1.2;
  letter-spacing:-.01em;color:var(--ink);margin-top:12px;
}
.section-desc{margin-top:12px;color:var(--muted);max-width:38em;font-size:15px}

/* ============ Steps ladder ============ */
.steps-block{background:var(--surface);border-block:1px solid var(--line)}
.steps{display:grid;gap:14px}
@media(min-width:900px){
  .steps{grid-template-columns:repeat(4,1fr);align-items:end;gap:16px}
}
.step{
  position:relative;background:var(--paper);
  border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 22px 24px;
  transition:border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
@media(min-width:900px){
  .step:nth-child(1){min-height:170px}
  .step:nth-child(2){min-height:196px}
  .step:nth-child(3){min-height:222px}
  .step:nth-child(4){min-height:196px}
}
.step:hover{border-color:var(--ink-light);transform:translateY(-2px);box-shadow:var(--sh-2)}
.step-num{
  font-family:"Inter",system-ui,sans-serif;font-feature-settings:"tnum";
  font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--ink-light);
}
.step-title{font-size:18px;font-weight:700;color:var(--ink);margin-top:10px}
.step-text{font-size:14px;color:var(--muted);margin-top:8px;line-height:1.75}
.step.is-featured{background:var(--ink);border-color:var(--ink);color:#fff}
.step.is-featured .step-title{color:#fff}
.step.is-featured .step-text{color:rgba(255,255,255,.78)}
.step.is-featured .step-num{color:var(--accent)}
.step-flag{
  position:absolute;top:-11px;left:22px;
  background:var(--accent);color:#fff;font-size:11px;font-weight:700;
  padding:3px 10px;border-radius:var(--r-tag);letter-spacing:.04em;
}

/* ============ Compare matrix ============ */
.compare{display:grid;gap:26px}
@media(min-width:1024px){.compare{grid-template-columns:28% 1fr;gap:40px;align-items:start}}
.compare-aside .section-title{font-size:clamp(22px,2.6vw,32px)}
.compare-aside p{color:var(--muted);font-size:15px;margin-top:12px}
.compare-aside .btn{margin-top:22px}
.table-scroll{
  overflow-x:auto;border-radius:var(--r-card);border:1px solid var(--line);
  background:var(--surface);box-shadow:var(--sh-1);
  -webkit-overflow-scrolling:touch;
}
table.compare-table{width:100%;min-width:600px;border-collapse:collapse;font-size:14.5px}
.compare-table thead th{
  position:sticky;top:0;background:var(--surface);z-index:2;
  text-align:center;padding:18px 14px;font-weight:700;color:var(--ink);
  border-bottom:2px solid var(--ink);
}
.compare-table thead th:first-child{text-align:left;color:var(--muted);font-weight:600;font-size:13px}
.compare-table thead th .price{
  display:block;font-family:"Inter",system-ui,sans-serif;font-feature-settings:"tnum";
  font-size:20px;font-weight:800;color:var(--ink-light);margin-top:6px;letter-spacing:-.01em;
}
.compare-table thead th .price small{font-size:12px;color:var(--muted);font-weight:600;margin-left:2px}
.compare-table tbody th{
  text-align:left;font-weight:600;color:var(--text);
  padding:14px;border-bottom:1px solid var(--line);background:var(--surface);
}
.compare-table tbody td{
  text-align:center;padding:14px;border-bottom:1px solid var(--line);color:var(--ink-mid);
}
.compare-table tbody tr:hover th,.compare-table tbody tr:hover td{background:var(--mist)}
.compare-table tbody tr:last-child th,.compare-table tbody tr:last-child td{border-bottom:none}
.mark-yes{color:var(--ink-light);font-weight:800}
.mark-no{color:#B9B4AA}
.table-hint{font-size:12px;color:var(--muted);margin-top:10px}
@media(min-width:1024px){.table-hint{display:none}}

/* ============ Notice strip ============ */
.notice{padding-block:0}
.notice-inner{
  background:var(--ink);color:#fff;border-radius:var(--r-card);
  padding:20px 24px;
  display:flex;flex-wrap:wrap;align-items:center;gap:16px 24px;
}
@media(min-width:768px){.notice-inner{padding:22px 32px}}
.notice-text{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:600}
.dot{
  width:8px;height:8px;border-radius:50%;background:var(--accent);flex:none;
  animation:pulse 2s ease-in-out infinite;
}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.notice-clock{
  display:flex;align-items:center;gap:8px;
  font-family:"Inter",system-ui,sans-serif;font-feature-settings:"tnum";
  font-size:15px;color:rgba(255,255,255,.82);
}
.clock-cell{
  background:rgba(255,255,255,.1);border-radius:8px;
  padding:4px 9px;font-weight:700;letter-spacing:.06em;color:#fff;
}
.notice .btn{margin-left:auto}

/* ============ Safety split ============ */
.safety-grid{display:grid;gap:34px}
@media(min-width:1024px){.safety-grid{grid-template-columns:5fr 7fr;gap:56px;align-items:center}}
.safety-figure{
  border-radius:var(--r-card);overflow:hidden;aspect-ratio:4/3;
  background:var(--mist);box-shadow:var(--sh-1);
}
.safety-figure img{width:100%;height:100%;object-fit:cover}
.safety-list{display:grid;gap:2px;margin-top:26px}
.safety-item{
  display:grid;grid-template-columns:auto 1fr;gap:14px;
  padding:18px 0;border-top:1px solid var(--line);
}
.safety-item:last-child{border-bottom:1px solid var(--line)}
.safety-icon{
  width:34px;height:34px;border-radius:10px;background:var(--mist);
  display:grid;place-items:center;color:var(--ink-mid);flex:none;
}
.safety-icon svg{width:17px;height:17px}
.safety-item h3{font-size:17px;font-weight:700;color:var(--ink)}
.safety-item p{font-size:14.5px;color:var(--muted);margin-top:4px}

/* ============ News list ============ */
.news{background:var(--surface);border-block:1px solid var(--line)}
.news-list{border-top:1px solid var(--line)}
.news-row{
  display:grid;grid-template-columns:1fr;gap:16px;
  padding:22px 0;border-bottom:1px solid var(--line);
  transition:transform var(--ease),background var(--ease);
}
@media(min-width:768px){
  .news-row{grid-template-columns:220px 1fr auto;gap:24px;align-items:center;padding:24px 0}
}
.news-row:hover{transform:translateX(2px)}
.news-row:hover .news-title{color:var(--ink-light)}
.news-thumb{
  width:100%;aspect-ratio:16/10;border-radius:var(--r-img);
  overflow:hidden;background:var(--mist);
}
@media(min-width:768px){.news-thumb{width:220px}}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 400ms ease}
.news-row:hover .news-thumb img{transform:scale(1.04)}
.news-title{
  font-size:18px;font-weight:700;line-height:1.45;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color var(--ease);
}
.news-excerpt{
  font-size:14px;color:var(--muted);margin-top:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:12px;font-size:12.5px;color:var(--muted)}
.news-arrow{display:none;color:var(--ink-light)}
@media(min-width:768px){.news-arrow{display:grid;place-items:center;width:36px;height:36px;border-radius:50%;border:1px solid var(--line)}}
.news-arrow svg{width:15px;height:15px}
.empty-state{
  min-height:240px;display:grid;place-items:center;text-align:center;
  padding:40px 20px;border-bottom:1px solid var(--line);
}
.empty-state svg{width:48px;height:48px;color:rgba(15,42,36,.4);margin:0 auto 14px}
.empty-state p{font-size:15px;color:var(--muted)}

/* ============ Contact form ============ */
.contact-grid{display:grid;gap:34px}
@media(min-width:1024px){.contact-grid{grid-template-columns:4fr 8fr;gap:56px;align-items:start}}
.contact-points{display:grid;gap:14px;margin-top:26px}
.contact-point{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:600;color:var(--ink-mid)}
.contact-point svg{width:17px;height:17px;color:var(--ink-light);flex:none}
.contact-meta{margin-top:26px;padding-top:22px;border-top:1px solid var(--line);font-size:14px;color:var(--muted);display:grid;gap:6px}
.contact-meta strong{color:var(--ink);font-weight:700}
.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-1);
}
@media(min-width:768px){.form-card{padding:32px}}
.form-grid{display:grid;gap:18px}
@media(min-width:768px){.form-grid{grid-template-columns:1fr 1fr}}
.field{display:flex;flex-direction:column;gap:7px}
.field.full{grid-column:1/-1}
.field label{font-size:12px;font-weight:600;color:var(--ink-mid);letter-spacing:.02em}
.field input,.field select,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--r-input);
  background:var(--paper);padding:0 14px;height:44px;
  font-size:15px;color:var(--text);
  transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.field textarea{height:auto;padding:12px 14px;min-height:96px;resize:vertical;line-height:1.7}
.field input:hover,.field select:hover,.field textarea:hover{border-color:#CFC9BE}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--ink-light);background:var(--surface);
  box-shadow:0 0 0 3px rgba(44,106,92,.14);
}
.field .err{display:none;font-size:12px;color:var(--danger)}
.field.has-error input,.field.has-error textarea,.field.has-error select{border-color:var(--danger)}
.field.has-error .err{display:block}
.check{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--muted);line-height:1.7}
.check input{width:16px;height:16px;margin-top:4px;accent-color:var(--ink-mid);flex:none}
.form-note{font-size:12.5px;color:var(--muted);margin-top:4px}
.form-success{
  display:none;background:var(--mist);color:var(--ink-mid);
  border-left:3px solid var(--ink-light);border-radius:8px;
  padding:12px 16px;font-size:14px;font-weight:600;
}
.form-success.is-visible{display:block}

/* ============ FAQ ============ */
.faq{background:var(--mist)}
.faq-grid{display:grid;gap:30px}
@media(min-width:1024px){.faq-grid{grid-template-columns:4fr 8fr;gap:56px;align-items:start}}
.faq-aside p{color:var(--ink-mid);font-size:15px;margin-top:12px;max-width:22em}
.faq-aside .link-arrow{margin-top:18px}
.faq-list{border-top:1px solid rgba(15,42,36,.14)}
.faq-item{border-bottom:1px solid rgba(15,42,36,.14)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  background:none;border:none;text-align:left;cursor:pointer;
  padding:20px 4px 20px 12px;font-size:16.5px;font-weight:700;color:var(--ink);
  transition:color var(--ease),border-color var(--ease);
  border-left:1px solid transparent;
}
.faq-q:hover{color:var(--ink-light)}
.faq-item.is-open .faq-q{color:var(--ink);border-left:1px solid var(--ink);padding-left:14px}
.faq-icon{position:relative;width:16px;height:16px;flex:none}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
  transition:transform var(--ease),opacity var(--ease);
}
.faq-icon::before{left:0;right:0;top:7px;height:1.5px}
.faq-icon::after{top:0;bottom:0;left:7px;width:1.5px}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows var(--ease)}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a-inner{overflow:hidden}
.faq-a p{font-size:14.5px;color:var(--ink-mid);padding:0 4px 22px 14px;max-width:44em}

/* ============ CTA band ============ */
.cta-band{padding-block:clamp(48px,6vw,80px)}
.cta-inner{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:30px 26px;display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between;
  box-shadow:var(--sh-1);
}
@media(min-width:768px){.cta-inner{padding:36px 44px}}
.cta-inner h2{font-size:clamp(20px,2.6vw,28px);font-weight:700;color:var(--ink);line-height:1.35;letter-spacing:-.01em}
.cta-inner p{font-size:14.5px;color:var(--muted);margin-top:6px}

/* ============ Footer ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.78);padding-top:clamp(48px,6vw,72px)}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr}
@media(min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(255,255,255,.1)}
.footer-brand span{color:#fff;font-weight:800;font-size:16px;line-height:1.3}
.footer-about{font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.66);max-width:26em}
.footer-col h3{font-size:13px;font-weight:700;letter-spacing:.14em;color:rgba(255,255,255,.55);margin-bottom:14px;text-transform:uppercase}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.8);transition:color var(--ease)}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  margin-top:clamp(36px,5vw,56px);border-top:1px solid rgba(255,255,255,.12);
  padding-block:20px;display:flex;flex-wrap:wrap;gap:10px 20px;align-items:center;justify-content:space-between;
  font-size:12.5px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.55)}
.footer-bottom a:hover{color:var(--accent)}

/* ============ Mobile tab bar ============ */
.mobile-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  display:flex;background:#fff;border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -6px 20px -14px rgba(15,42,36,.4);
}
.mobile-tab a{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  height:64px;font-size:11px;font-weight:600;color:var(--muted);
  position:relative;transition:color var(--ease);
}
.mobile-tab a svg{width:22px;height:22px;stroke-width:1.6}
.mobile-tab a.is-active{color:var(--accent);font-weight:700}
.mobile-tab a.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:22px;height:3px;border-radius:0 0 3px 3px;background:var(--accent);
}
@media(min-width:1024px){.mobile-tab{display:none}}
@media(max-width:1023px){
  body{padding-bottom:calc(64px + env(safe-area-inset-bottom))}
}

/* ============ Reveal animation ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 420ms ease,transform 420ms ease}
.reveal.is-visible{opacity:1;transform:none}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .dot{animation:none}
  *{transition-duration:.001ms !important;animation-duration:.001ms !important;animation-iteration-count:1 !important}
}

/* roulang page: article */
:root{
  --ink:#0F2A24;
  --ink-mid:#16403A;
  --ink-soft:#2C6A5C;
  --accent:#FF5A2B;
  --accent-soft:#FFE8DF;
  --paper:#F7F5F0;
  --mist:#E4EEE8;
  --line:#E2DED6;
  --text:#1C1F1D;
  --muted:#6B716C;
  --white:#FFFFFF;
  --err:#B4432E;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --r-tag:6px;
  --sh-1:0 1px 2px rgba(15,42,36,.06);
  --sh-2:0 12px 28px -12px rgba(15,42,36,.18);
  --w:1200px;
  --pad:20px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:"Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--ink-soft);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--ink);}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;}
:focus-visible{outline:2px solid var(--ink-soft);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:var(--w);margin:0 auto;padding:0 var(--pad);}
.section{padding:56px 0;}
.section-tight{padding:40px 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;font-weight:600;letter-spacing:.22em;text-transform:uppercase;
  color:var(--ink-soft);margin-bottom:14px;
}
.eyebrow::before{content:"";width:24px;height:1px;background:var(--ink-soft);}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,245,240,.94);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px -14px rgba(15,42,36,.5);background:rgba(247,245,240,.88);backdrop-filter:blur(8px);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;font-size:17px;letter-spacing:-.02em;line-height:1.2;}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:32px;height:32px;flex:0 0 32px;border-radius:9px;background:var(--mist);
  display:grid;place-items:center;
}
.brand-mark svg{width:19px;height:19px;}
.brand-text{white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:26px;}
.nav-link{
  position:relative;font-size:15px;color:#3A423E;padding:6px 0;font-weight:500;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--ink);
  transition:width .22s ease;
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:var(--ink);font-weight:700;}
.nav-link.is-active::after{width:100%;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:var(--r-btn);
  font-weight:700;line-height:1;text-align:center;
  padding:14px 28px;font-size:15px;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .15s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent);}
.btn-primary:hover{background:#E84E22;border-color:#E84E22;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--mist);color:var(--ink);}
.btn-sm{padding:11px 20px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}
.btn-block{width:100%;}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--ink-soft);font-weight:600;font-size:14px;position:relative;}
.text-link::after{content:"";position:absolute;left:0;bottom:-3px;height:1px;width:0;background:currentColor;transition:width .22s ease;}
.text-link:hover::after{width:100%;}
.text-link svg{width:12px;height:12px;}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;line-height:1.6;
  padding:4px 10px;border-radius:var(--r-tag);white-space:nowrap;
}
.badge-mint{background:var(--mist);color:var(--ink-mid);}
.badge-accent{background:var(--accent-soft);color:#8A2B0C;}
.badge-dark{background:var(--ink);color:#F7F5F0;}

/* ---------- breadcrumb ---------- */
.crumb{padding:20px 0 0;}
.crumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;color:var(--muted);}
.crumb-list a{color:var(--muted);}
.crumb-list a:hover{color:var(--ink-soft);}
.crumb-sep{color:#C7C2B8;}
.crumb-current{color:var(--ink);font-weight:600;}

/* ---------- article head ---------- */
.article-head{max-width:820px;margin:0 auto;padding:26px 0 0;text-align:left;}
.article-head h1{
  font-size:clamp(28px,3.6vw,44px);
  font-weight:800;line-height:1.3;letter-spacing:-.02em;
  word-break:break-word;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  margin-top:18px;font-size:12px;color:var(--muted);
}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:#C7C2B8;}
.article-meta time{font-variant-numeric:tabular-nums;letter-spacing:.02em;}

/* ---------- article body ---------- */
.article-wrap{max-width:820px;margin:0 auto;padding:32px 0 0;}
.article-body{
  max-width:760px;margin:0 auto;font-size:16px;color:#252A27;line-height:1.9;
  overflow-wrap:break-word;word-break:break-word;
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 20px;}
.article-body h2{
  font-size:clamp(22px,2.4vw,28px);font-weight:700;line-height:1.32;
  margin:40px 0 16px;padding-bottom:10px;border-bottom:1px solid var(--line);
}
.article-body h3{font-size:19px;font-weight:700;line-height:1.4;margin:28px 0 12px;}
.article-body h4{font-size:17px;font-weight:700;margin:22px 0 10px;}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:0;}
.article-body ul li{position:relative;padding-left:18px;margin-bottom:10px;}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.78em;width:6px;height:6px;border-radius:1px;background:var(--ink-soft);
}
.article-body ol{counter-reset:item;padding-left:0;}
.article-body ol li{position:relative;padding-left:28px;margin-bottom:10px;counter-increment:item;}
.article-body ol li::before{
  content:counter(item,decimal-leading-zero);
  position:absolute;left:0;top:0;font-size:13px;font-weight:700;color:var(--ink-soft);
  font-variant-numeric:tabular-nums;
}
.article-body blockquote{
  background:var(--mist);border-left:3px solid var(--ink);
  padding:20px;margin:0 0 22px;border-radius:0 10px 10px 0;color:#22302B;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body a{color:var(--ink-soft);border-bottom:1px solid rgba(44,106,92,.35);}
.article-body a:hover{color:var(--ink);border-bottom-color:var(--ink);}
.article-body img{border-radius:var(--r-img);margin:24px auto;background:var(--mist);}
.article-body figure{margin:24px 0;}
.article-body figcaption,.article-body .caption{
  font-size:12px;color:var(--muted);text-align:center;margin-top:8px;line-height:1.7;
}
.article-body table{width:100%;border-collapse:collapse;margin:0 0 22px;font-size:14px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left;}
.article-body th{background:var(--mist);color:var(--ink);font-weight:700;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0;}
.article-body strong{font-weight:700;color:var(--ink);}

.article-lead{
  font-size:18px;line-height:1.85;color:#2A312D;
  border-left:3px solid var(--accent);padding-left:16px;margin:0 0 26px;
}
.article-end{border-top:1px solid var(--line);margin:36px 0 0;}

.article-empty{
  max-width:760px;margin:0 auto;text-align:center;
  padding:64px 24px;background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);
}
.article-empty svg{width:48px;height:48px;stroke:rgba(15,42,36,.4);fill:none;stroke-width:1.5;margin:0 auto 16px;}
.article-empty h2{font-size:20px;margin-bottom:8px;}
.article-empty p{color:var(--muted);font-size:14px;margin-bottom:18px;}

/* ---------- related ---------- */
.related{border-top:1px solid var(--line);margin-top:44px;padding-top:36px;}
.related-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:8px;}
.related-head h2{font-size:clamp(20px,2.2vw,26px);font-weight:700;}
.related-list{display:flex;flex-direction:column;}
.related-item{
  display:flex;align-items:center;gap:16px;
  padding:16px 0;border-bottom:1px solid var(--line);
  transition:transform .2s ease;
}
.related-item:last-child{border-bottom:0;}
.related-item:hover{transform:translateX(2px);}
.related-item .ri-title{font-size:16px;font-weight:700;color:var(--ink);flex:1;line-height:1.6;}
.related-item:hover .ri-title{color:var(--ink-soft);}
.related-item .ri-date{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap;}
.related-item .ri-arrow{width:16px;height:16px;color:var(--ink-soft);flex:0 0 16px;}

.return-bar{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  margin-top:32px;
}
.return-bar .back{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--ink-soft);}
.return-bar .back svg{width:14px;height:14px;}

/* ---------- extend card ---------- */
.extend-card{
  display:grid;grid-template-columns:1fr;gap:0;
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;max-width:920px;margin:0 auto;
}
.extend-media{aspect-ratio:16/9;background:var(--mist);}
.extend-media img{width:100%;height:100%;object-fit:cover;}
.extend-body{padding:28px 24px;}
.extend-body h2{font-size:clamp(20px,2.2vw,26px);font-weight:700;margin-bottom:12px;}
.extend-body p{font-size:15px;color:#3A423E;line-height:1.85;margin-bottom:18px;max-width:60ch;}
.extend-points{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;}
.extend-points li{
  font-size:13px;color:var(--ink-mid);background:var(--mist);
  padding:6px 12px;border-radius:var(--r-tag);font-weight:600;
}

/* ---------- cta ---------- */
.cta-band{
  background:var(--ink);color:#F2F0EA;border-radius:var(--r-card);
  padding:32px 24px;display:flex;flex-direction:column;gap:20px;
}
.cta-band h2{color:#F7F5F0;font-size:clamp(20px,2.4vw,28px);font-weight:700;line-height:1.35;}
.cta-band p{font-size:14px;color:rgba(247,245,240,.78);margin-top:10px;max-width:52ch;}
.cta-band .cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.cta-band .btn-ghost{color:#F7F5F0;border-color:rgba(247,245,240,.5);}
.cta-band .btn-ghost:hover{background:rgba(247,245,240,.12);color:#fff;border-color:#F7F5F0;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#E9E5DC;margin-top:64px;padding:56px 0 24px;border-top:1px solid rgba(255,255,255,.12);}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;color:#F7F5F0;margin-bottom:14px;letter-spacing:-.01em;}
.footer-brand .brand-mark{background:rgba(255,255,255,.08);}
.footer-about{font-size:14px;line-height:1.85;color:rgba(233,229,220,.72);max-width:34ch;}
.footer-col h3{color:#F7F5F0;font-size:14px;font-weight:700;margin-bottom:14px;letter-spacing:.04em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:rgba(233,229,220,.78);font-size:14px;}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-direction:column;gap:8px;font-size:12px;color:rgba(233,229,220,.6);
}
.footer-bottom a{color:rgba(233,229,220,.8);}
.footer-bottom a:hover{color:var(--accent);}

/* ---------- mobile tabbar ---------- */
.tabbar{display:none;}

@media (min-width:520px){
  :root{--pad:32px;}
  .extend-body{padding:32px;}
  .cta-band{padding:40px 36px;}
  .footer-grid{grid-template-columns:repeat(2,1fr);}
  .footer-bottom{flex-direction:row;justify-content:space-between;align-items:center;}
}
@media (min-width:768px){
  .section{padding:80px 0;}
  .related-head h2{font-size:26px;}
  .cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:44px 48px;}
  .cta-band .cta-actions{flex:0 0 auto;}
  .extend-card{grid-template-columns:0.9fr 1.1fr;}
  .extend-media{aspect-ratio:4/3;height:100%;}
}
@media (min-width:1024px){
  :root{--pad:48px;}
  .section{padding:96px 0;}
  .main-nav{gap:32px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;}
}
@media (max-width:1023px){
  .main-nav{display:none;}
  .header-inner{height:64px;}
  .brand-text{font-size:15px;white-space:normal;}
  .header-cta{padding:9px 16px;font-size:13px;}
  body{padding-bottom:calc(64px + env(safe-area-inset-bottom));}
  .tabbar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:90;
    background:rgba(255,255,255,.97);border-top:1px solid var(--line);
    padding-bottom:env(safe-area-inset-bottom);
    box-shadow:0 -6px 18px -14px rgba(15,42,36,.45);
  }
  .tabbar a{
    flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
    height:64px;font-size:11px;color:var(--muted);position:relative;
  }
  .tabbar a svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
  .tabbar a.is-active{color:var(--accent);font-weight:700;}
  .tabbar a.is-active::before{
    content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
    width:24px;height:3px;border-radius:0 0 3px 3px;background:var(--accent);
  }
  .site-footer{margin-top:56px;padding-bottom:24px;}
}
@media (max-width:520px){
  .article-head{padding-top:20px;}
  .article-body{font-size:15px;}
  .article-body h2{margin-top:32px;}
  .related-item .ri-date{display:none;}
  .extend-body{padding:24px 20px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;animation-iteration-count:1 !important;
    transition-duration:.001ms !important;scroll-behavior:auto !important;
  }
  .related-item:hover,.btn-primary:hover{transform:none;}
}

/* roulang page: category1 */
:root{
  --ink:#0F2A24;
  --ink-mid:#16403A;
  --ink-soft:#2C6A5C;
  --accent:#FF5A2B;
  --accent-deep:#E84A1D;
  --accent-soft:#FFE8DF;
  --paper:#F7F5F0;
  --surface:#FFFFFF;
  --mist:#E4EEE8;
  --line:#E2DED6;
  --text:#1C1F1D;
  --muted:#6B716C;
  --radius-btn:999px;
  --radius-card:16px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(15,42,36,.06);
  --shadow-2:0 12px 28px -12px rgba(15,42,36,.18);
  --ease:200ms ease;
  --font-cn:"Noto Sans SC","Source Han Sans SC",system-ui,"PingFang SC","Microsoft YaHei",sans-serif;
  --font-num:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
svg{display:block}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible{
  outline:2px solid var(--ink-soft);
  outline-offset:2px;
  border-radius:6px;
}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(247,245,240,.94);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease),background var(--ease),backdrop-filter var(--ease);
}
.site-header.is-scrolled{
  background:rgba(247,245,240,.88);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  box-shadow:0 6px 20px -14px rgba(15,42,36,.4);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:72px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.brand-mark{
  width:30px;
  height:30px;
  border-radius:8px;
  background:var(--ink);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  flex:0 0 auto;
}
.brand-mark svg{width:19px;height:19px}
.brand-text{
  font-size:16px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--ink);
  white-space:nowrap;
}
.main-nav{
  display:none;
  align-items:center;
  gap:26px;
  margin-left:12px;
}
.nav-link{
  position:relative;
  font-size:15px;
  font-weight:600;
  color:var(--muted);
  padding:6px 0;
  transition:color var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  border-radius:2px;
  background:var(--ink);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--ease);
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink)}
.nav-link.is-active::after{transform:scaleX(1)}
.header-cta{margin-left:auto;display:none}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-weight:700;
  font-size:15px;
  line-height:1.2;
  padding:14px 28px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  cursor:pointer;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-deep);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--mist)}
.btn-ghost:active{transform:translateY(1px)}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none}

.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:700;
  color:var(--ink-soft);
  position:relative;
  padding-bottom:2px;
}
.link-arrow svg{width:14px;height:14px;transition:transform var(--ease)}
.link-arrow::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  height:1px;
  width:0;
  background:var(--ink-soft);
  transition:width var(--ease);
}
.link-arrow:hover{color:var(--ink)}
.link-arrow:hover::after{width:100%}
.link-arrow:hover svg{transform:translateX(3px)}

/* ---------- breadcrumb ---------- */
.breadcrumb{
  padding:20px 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 var(--ease)}
.breadcrumb a:hover{color:var(--ink-soft)}
.breadcrumb .sep{color:#C7C2B8}
.breadcrumb .current{color:var(--ink-soft);font-weight:600}

/* ---------- hero ---------- */
.page-hero{padding:28px 0 0}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:12px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.22em;
  color:var(--ink-soft);
  text-transform:uppercase;
}
.eyebrow::before{
  content:"";
  width:24px;
  height:1px;
  background:var(--ink-soft);
  display:inline-block;
}
.page-hero h1{
  margin-top:18px;
  font-size:clamp(30px,4.6vw,54px);
  font-weight:800;
  line-height:1.14;
  letter-spacing:-.02em;
  color:var(--ink);
  max-width:900px;
}
.hero-lead{
  margin-top:18px;
  max-width:640px;
  font-size:17px;
  color:var(--muted);
}
.hero-actions{
  margin-top:28px;
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}
.hero-media{
  margin-top:44px;
  border-radius:var(--radius-img);
  overflow:hidden;
  aspect-ratio:21/9;
  background:var(--mist);
  border:1px solid var(--line);
}
.hero-media img{
  width:100%;
  height:100%;
  object-fit:cover;
}

/* ---------- generic section ---------- */
.section{padding:64px 0}
.section-head{max-width:720px}
.section-head h2{
  font-size:clamp(24px,3.2vw,38px);
  font-weight:700;
  line-height:1.2;
  letter-spacing:-.01em;
  color:var(--ink);
}
.section-head p{
  margin-top:14px;
  color:var(--muted);
  font-size:16px;
  max-width:620px;
}

/* ---------- feature flow ---------- */
.feature-list{
  margin-top:44px;
  display:grid;
  gap:48px;
}
.feature-row{
  display:grid;
  gap:22px;
  align-items:center;
}
.feature-media{
  border-radius:var(--radius-img);
  overflow:hidden;
  aspect-ratio:4/3;
  background:var(--mist);
  border:1px solid var(--line);
  transition:box-shadow var(--ease),border-color var(--ease),transform var(--ease);
}
.feature-media img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.feature-row:hover .feature-media{
  border-color:var(--ink-soft);
  box-shadow:var(--shadow-2);
  transform:translateY(-2px);
}
.feature-index{
  font-family:var(--font-num);
  font-feature-settings:"tnum";
  font-size:13px;
  font-weight:700;
  letter-spacing:.18em;
  color:var(--ink-soft);
  display:flex;
  align-items:center;
  gap:10px;
}
.feature-index::after{
  content:"";
  flex:1;
  height:1px;
  background:var(--line);
  max-width:64px;
}
.feature-text h3{
  margin-top:12px;
  font-size:clamp(19px,2.2vw,24px);
  font-weight:700;
  line-height:1.3;
  color:var(--ink);
}
.feature-text p{
  margin-top:12px;
  color:var(--muted);
  font-size:16px;
  max-width:38em;
}
.feature-text .link-arrow{margin-top:18px}

/* ---------- trouble band ---------- */
.band{
  background:var(--mist);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:56px 0;
}
.band-head h2{
  font-size:clamp(22px,2.8vw,34px);
  font-weight:700;
  line-height:1.22;
  color:var(--ink);
}
.band-head p{
  margin-top:12px;
  color:var(--muted);
  max-width:600px;
}
.band-grid{
  margin-top:34px;
  display:grid;
  gap:26px;
}
.band-item{
  padding-left:20px;
  border-left:2px solid rgba(44,106,92,.35);
}
.band-item h3{
  font-size:17px;
  font-weight:700;
  color:var(--ink);
}
.band-item p{
  margin-top:8px;
  font-size:15px;
  color:var(--muted);
}

/* ---------- stats strip ---------- */
.stats{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  margin-top:44px;
}
.stat{
  background:var(--surface);
  padding:24px 20px;
}
.stat-num{
  font-family:var(--font-num);
  font-feature-settings:"tnum";
  font-size:clamp(26px,3.4vw,36px);
  font-weight:800;
  color:var(--ink);
  line-height:1.1;
}
.stat-num span{
  font-size:14px;
  font-weight:700;
  color:var(--ink-soft);
  margin-left:4px;
}
.stat-label{
  margin-top:8px;
  font-size:13px;
  color:var(--muted);
}

/* ---------- FAQ ---------- */
.faq-wrap{
  display:grid;
  gap:32px;
}
.faq-intro h2{
  font-size:clamp(24px,3.2vw,38px);
  font-weight:700;
  line-height:1.2;
  color:var(--ink);
}
.faq-intro p{
  margin-top:14px;
  color:var(--muted);
  max-width:320px;
}
.faq-intro .link-arrow{margin-top:20px}
.faq-list{
  border-top:1px solid var(--line);
}
.faq-item{
  border-bottom:1px solid var(--line);
}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  gap:16px;
  padding:20px 0;
  font-size:16px;
  font-weight:700;
  color:var(--ink);
  transition:color var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--ink-soft)}
.faq-item .sign{
  margin-left:auto;
  position:relative;
  width:16px;
  height:16px;
  flex:0 0 auto;
}
.faq-item .sign::before,
.faq-item .sign::after{
  content:"";
  position:absolute;
  background:var(--ink-soft);
  transition:transform var(--ease),opacity var(--ease);
}
.faq-item .sign::before{left:0;top:7px;width:16px;height:1.5px}
.faq-item .sign::after{left:7px;top:0;width:1.5px;height:16px}
.faq-item[open] .sign::after{transform:scaleY(0);opacity:0}
.faq-item[open] summary{color:var(--ink)}
.faq-item .faq-answer{
  padding:0 0 22px 0;
  padding-left:18px;
  border-left:1px solid var(--line);
  color:var(--muted);
  font-size:15px;
  max-width:64ch;
}
.faq-item[open] .faq-answer{
  border-left-color:var(--ink-soft);
}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink);
  color:var(--paper);
  border-radius:var(--radius-card);
  padding:38px 28px;
  display:grid;
  gap:22px;
  align-items:center;
}
.cta-band h2{
  font-size:clamp(20px,2.6vw,28px);
  font-weight:700;
  line-height:1.3;
  letter-spacing:-.01em;
}
.cta-band p{
  margin-top:10px;
  font-size:14px;
  color:rgba(247,245,240,.72);
}
.cta-band .btn-primary{background:var(--accent);color:#fff}
.cta-band .btn-primary:hover{background:var(--accent-deep)}
.cta-note{
  margin-top:14px;
  font-size:12px;
  color:rgba(247,245,240,.6);
}

/* ---------- footer ---------- */
.site-footer{
  background:var(--ink);
  color:rgba(247,245,240,.86);
  margin-top:64px;
  padding:52px 0 28px;
  border-top:1px solid rgba(255,255,255,.12);
}
.footer-grid{
  display:grid;
  gap:34px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:16px;
  font-weight:800;
  color:#fff;
  letter-spacing:-.01em;
}
.footer-about{
  margin-top:14px;
  font-size:14px;
  line-height:1.9;
  color:rgba(247,245,240,.66);
  max-width:340px;
}
.footer-col h3{
  font-size:13px;
  font-weight:700;
  letter-spacing:.14em;
  color:rgba(247,245,240,.5);
  text-transform:uppercase;
  margin-bottom:14px;
}
.footer-col ul{display:grid;gap:10px}
.footer-col a{
  font-size:14px;
  color:rgba(247,245,240,.82);
  transition:color var(--ease);
}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  margin-top:38px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  font-size:12px;
  color:rgba(247,245,240,.55);
}
.footer-bottom a{
  color:rgba(247,245,240,.8);
  border-bottom:1px solid rgba(247,245,240,.3);
  transition:color var(--ease),border-color var(--ease);
}
.footer-bottom a:hover{color:var(--accent);border-color:var(--accent)}

/* ---------- mobile tab bar ---------- */
.tabbar{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:90;
  display:flex;
  background:#fff;
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -6px 18px -14px rgba(15,42,36,.4);
}
.tab-item{
  flex:1;
  height:64px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:3px;
  font-size:11px;
  color:var(--muted);
  position:relative;
  transition:color var(--ease);
}
.tab-item svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.tab-item.is-active{color:var(--accent);font-weight:700}
.tab-item.is-active::before{
  content:"";
  position:absolute;
  top:0;left:50%;
  transform:translateX(-50%);
  width:26px;height:3px;
  border-radius:0 0 3px 3px;
  background:var(--accent);
}

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

/* ---------- breakpoints ---------- */
@media (min-width:520px){
  .container{padding:0 32px}
  .stats{grid-template-columns:repeat(4,1fr)}
  .band-grid{grid-template-columns:repeat(3,1fr);gap:0}
  .band-item{padding-left:22px;padding-right:22px;border-left:1px solid rgba(44,106,92,.28)}
  .band-item:first-child{padding-left:0;border-left:0}
  .band-item:last-child{padding-right:0}
}

@media (min-width:768px){
  .feature-list{gap:64px}
  .feature-row{grid-template-columns:5fr 6fr;gap:36px}
  .feature-row.is-reverse .feature-media{order:2}
  .cta-band{grid-template-columns:1fr auto;padding:44px 40px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
  .faq-wrap{grid-template-columns:280px 1fr;gap:48px}
  .section{padding:84px 0}
}

@media (min-width:1024px){
  .container{padding:0 48px}
  .main-nav{display:flex}
  .header-cta{display:inline-flex}
  .tabbar{display:none}
  .section{padding:96px 0}
  .feature-row{gap:56px}
  .faq-wrap{grid-template-columns:320px 1fr;gap:64px}
  .cta-band{padding:52px 56px}
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.1fr}
}

@media (min-width:1280px){
  .container{padding:0 48px}
}

@media (max-width:1023px){
  body{padding-bottom:calc(64px + env(safe-area-inset-bottom))}
  .brand-text{font-size:15px}
}

@media (max-width:519px){
  .hero-media{aspect-ratio:16/9}
  .feature-media{aspect-ratio:16/10}
  .cta-band{padding:30px 22px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .btn:hover,.feature-row:hover .feature-media{transform:none}
  .link-arrow:hover svg{transform:none}
}

/* roulang page: category3 */
:root{
  --ink:#0F2A24;
  --ink-2:#16403A;
  --ink-3:#2C6A5C;
  --accent:#FF5A2B;
  --accent-soft:#FFE8DF;
  --paper:#F7F5F0;
  --mist:#E4EEE8;
  --surface:#FFFFFF;
  --line:#E2DED6;
  --text:#1C1F1D;
  --muted:#6B716C;
  --danger:#B4432E;
  --radius-card:16px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(15,42,36,.06);
  --shadow-2:0 12px 28px -12px rgba(15,42,36,.18);
  --ease:200ms ease;
  --font:"Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{margin:0;font-family:var(--font);font-size:16px;line-height:1.85;color:var(--text);background:var(--paper);-webkit-font-smoothing:antialiased;overflow-x:hidden;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3{color:var(--ink);letter-spacing:-.01em;}
svg{display:block;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
@media(min-width:1024px){.container{padding-left:32px;padding-right:32px;}}
@media(min-width:1280px){.container{padding-left:48px;padding-right:48px;}}

.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 18px;border-radius:0 0 8px 0;z-index:200;}
.skip-link:focus{left:0;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--radius-btn);border:1px solid transparent;
  font-weight:700;font-size:15px;line-height:1.2;cursor:pointer;white-space:nowrap;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-primary{background:var(--accent);color:#fff;}
.btn-primary:hover{background:#ef4a1c;transform:translateY(-1px);box-shadow:0 10px 22px -12px rgba(255,90,43,.8);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--mist);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{padding:11px 20px;font-size:14px;}
.btn-block{width:100%;}
.btn:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--ink-3);outline-offset:2px;
}
.btn[disabled]{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}

.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--ink-3);font-weight:700;font-size:14px;position:relative;}
.link-arrow::after{content:"";position:absolute;left:0;bottom:-3px;height:1px;width:0;background:var(--ink-3);transition:width var(--ease);}
.link-arrow:hover{color:var(--ink);}
.link-arrow:hover::after{width:100%;}
.link-arrow svg{width:13px;height:13px;transition:transform var(--ease);}
.link-arrow:hover svg{transform:translateX(3px);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;background:var(--paper);
  border-bottom:1px solid var(--line);transition:box-shadow var(--ease),background var(--ease);
}
.site-header.is-scrolled{box-shadow:0 8px 24px -18px rgba(15,42,36,.45);background:rgba(247,245,240,.92);backdrop-filter:blur(8px);}
.header-inner{display:flex;align-items:center;gap:18px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{width:30px;height:30px;border-radius:8px;background:var(--ink);display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.brand-mark svg{width:18px;height:18px;}
.brand-text{font-weight:800;font-size:16px;color:var(--ink);letter-spacing:-.01em;white-space:nowrap;}
.main-nav{display:none;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;padding:8px 14px;font-size:15px;font-weight:600;color:var(--muted);
  border-radius:8px;transition:color var(--ease),background var(--ease);
}
.nav-link:hover{color:var(--ink);background:var(--mist);}
.nav-link.is-active{color:var(--ink);}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;background:var(--ink);border-radius:2px;
}
.header-cta{display:none;}
@media(min-width:1024px){
  .main-nav{display:flex;}
  .header-cta{display:inline-flex;margin-left:8px;}
}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding:20px 0 0;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;color:var(--muted);}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:var(--line);}
.breadcrumb a{color:var(--muted);transition:color var(--ease);}
.breadcrumb a:hover{color:var(--ink-3);}
.breadcrumb [aria-current="page"]{color:var(--ink-3);font-weight:600;}

/* ---------- 页面首屏 ---------- */
.page-hero{padding:28px 0 56px;}
.hero-grid{display:grid;grid-template-columns:1fr;gap:36px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;font-size:12px;font-weight:600;
  letter-spacing:.16em;color:var(--ink-3);margin-bottom:18px;
}
.eyebrow::before,.eyebrow::after{content:"";width:24px;height:1px;background:var(--ink-3);opacity:.5;}
.page-hero h1{
  font-size:clamp(30px,4.6vw,52px);line-height:1.14;font-weight:800;letter-spacing:-.02em;
  max-width:16em;
}
.page-hero .lead{margin-top:20px;font-size:17px;font-weight:600;color:var(--ink-2);max-width:34em;}
.page-hero .desc{margin-top:16px;color:var(--muted);font-size:15px;max-width:36em;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-visual{
  position:relative;border-radius:var(--radius-card);overflow:hidden;background:var(--mist);
  aspect-ratio:16/10;box-shadow:var(--shadow-1);
}
.hero-visual img{width:100%;height:100%;object-fit:cover;}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(15,42,36,0) 40%,rgba(15,42,36,.42) 100%);
}
.hero-badge{
  position:absolute;right:16px;bottom:16px;z-index:2;background:var(--accent-soft);color:var(--ink);
  font-size:12px;font-weight:700;padding:7px 12px;border-radius:6px;
}
@media(min-width:900px){
  .hero-grid{grid-template-columns:minmax(0,6fr) minmax(0,5fr);gap:48px;}
}

/* ---------- 数据条 ---------- */
.stats{
  margin-top:44px;border-top:1px solid var(--line);padding-top:26px;
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 16px;
}
.stat-item .stat-num{font-size:clamp(24px,3vw,32px);font-weight:800;color:var(--ink);line-height:1.1;letter-spacing:-.02em;}
.stat-item .stat-num span{font-size:14px;font-weight:700;margin-left:3px;color:var(--ink-3);}
.stat-item .stat-label{font-size:12px;color:var(--muted);margin-top:6px;}
@media(min-width:768px){.stats{grid-template-columns:repeat(4,minmax(0,1fr));}}

/* ---------- 通用区块 ---------- */
.section{padding:56px 0;}
.section-head{max-width:42em;margin-bottom:32px;}
.section-head h2{font-size:clamp(24px,3.1vw,38px);line-height:1.2;font-weight:700;margin-top:10px;}
.section-head p{margin-top:14px;color:var(--muted);font-size:15px;}
@media(min-width:1024px){.section{padding:88px 0;} .section-head{margin-bottom:44px;}}

/* ---------- 双列卡片 + 侧栏 ---------- */
.aside-layout{display:grid;grid-template-columns:1fr;gap:32px;}
.card-grid{display:grid;grid-template-columns:1fr;gap:20px;align-items:start;}
@media(min-width:640px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
.content-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);display:flex;flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.content-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--ink-3);}
.content-card .thumb{aspect-ratio:4/3;background:var(--mist);overflow:hidden;}
.content-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform 420ms ease;}
.content-card:hover .thumb img{transform:scale(1.03);}
.content-card .body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.tag{
  display:inline-flex;align-items:center;align-self:flex-start;font-size:12px;font-weight:600;
  padding:4px 10px;border-radius:6px;background:var(--mist);color:var(--ink-2);
}
.tag-accent{background:var(--accent-soft);color:#8A3113;}
.content-card h3{font-size:18px;line-height:1.45;font-weight:700;}
.content-card p{font-size:14px;color:var(--muted);line-height:1.8;}
.content-card .body .link-arrow{margin-top:auto;padding-top:6px;}

/* 侧栏 */
.aside{display:flex;flex-direction:column;gap:20px;}
.aside-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);
}
.aside-card h3{font-size:16px;font-weight:700;margin-bottom:10px;}
.aside-card p{font-size:14px;color:var(--muted);line-height:1.8;}
.aside-card .btn{margin-top:16px;}
.aside-card.dark{background:var(--ink);border-color:var(--ink);color:#f4f1ea;}
.aside-card.dark h3{color:#fff;}
.aside-card.dark p{color:rgba(244,241,234,.76);}
.aside-list{display:flex;flex-direction:column;margin-top:6px;}
.aside-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 0;font-size:14px;font-weight:600;color:var(--ink-2);
  border-bottom:1px dashed var(--line);transition:color var(--ease),padding-left var(--ease);
}
.aside-list a:last-child{border-bottom:0;}
.aside-list a:hover{color:var(--ink-3);padding-left:4px;}
.aside-list svg{width:12px;height:12px;flex-shrink:0;}
@media(min-width:1024px){
  .aside-layout{grid-template-columns:minmax(0,1fr) 280px;gap:40px;align-items:start;}
  .aside{position:sticky;top:96px;}
}

/* ---------- 编号流程 ---------- */
.steps{display:grid;gap:8px;border-top:1px solid var(--line);}
.step{
  display:grid;grid-template-columns:64px minmax(0,1fr);gap:16px;
  padding:26px 0;border-bottom:1px solid var(--line);
  transition:background var(--ease);
}
.step-num{
  font-size:34px;font-weight:800;line-height:1;color:var(--ink-3);opacity:.35;
  letter-spacing:-.03em;padding-top:4px;
}
.step h3{font-size:18px;font-weight:700;margin-bottom:8px;}
.step p{font-size:14px;color:var(--muted);max-width:44em;}
.step:hover .step-num{opacity:.8;}
@media(min-width:768px){
  .step{grid-template-columns:96px minmax(0,1fr);gap:24px;padding:30px 0;}
  .step-num{font-size:48px;}
}

/* ---------- 雾绿要点带 ---------- */
.band{background:var(--mist);border-radius:var(--radius-card);padding:32px 24px;margin-top:36px;}
.band-title{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:22px;letter-spacing:.02em;}
.band-grid{display:grid;grid-template-columns:1fr;gap:22px;}
.band-item{padding-left:0;}
.band-item h4{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:6px;}
.band-item p{font-size:14px;color:var(--ink-2);opacity:.82;}
@media(min-width:768px){
  .band{padding:40px;}
  .band-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:0;}
  .band-item{padding:0 24px;border-left:1px solid rgba(22,64,58,.18);}
  .band-item:first-child{padding-left:0;border-left:0;}
  .band-item:last-child{padding-right:0;}
}

/* ---------- 速查列表 ---------- */
.check-list{display:grid;gap:0;border-top:1px solid var(--line);}
.check-item{
  display:grid;grid-template-columns:minmax(0,1fr);gap:6px;
  padding:22px 0;border-bottom:1px solid var(--line);
}
.check-item .q{display:flex;align-items:flex-start;gap:10px;font-size:15px;font-weight:700;color:var(--ink);}
.check-item .q::before{
  content:"";width:6px;height:6px;background:var(--accent);border-radius:2px;margin-top:10px;flex-shrink:0;
}
.check-item p{font-size:14px;color:var(--muted);padding-left:16px;max-width:50em;}
@media(min-width:900px){
  .check-item{grid-template-columns:minmax(0,300px) minmax(0,1fr);gap:24px;align-items:start;padding:24px 0;}
  .check-item p{padding-left:0;}
}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:1fr;gap:28px;}
.faq-side h2{font-size:clamp(24px,3.1vw,36px);line-height:1.2;}
.faq-side p{margin-top:14px;color:var(--muted);font-size:15px;max-width:22em;}
.faq-side .link-arrow{margin-top:20px;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 0;font-size:16px;font-weight:700;color:var(--ink);
  transition:color var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";font-size:22px;font-weight:400;color:var(--ink-3);line-height:1;
  transition:transform var(--ease),color var(--ease);flex-shrink:0;
}
.faq-item[open] summary{color:var(--ink-3);}
.faq-item[open] summary::after{content:"−";color:var(--accent);}
.faq-item .answer{padding:0 0 24px;border-left:1px solid var(--line);padding-left:0;transition:padding var(--ease);}
.faq-item[open] .answer{border-left:2px solid var(--ink-3);padding-left:16px;}
.faq-item .answer p{font-size:14.5px;color:var(--muted);line-height:1.85;max-width:46em;}
@media(min-width:1024px){
  .faq-wrap{grid-template-columns:minmax(0,320px) minmax(0,1fr);gap:56px;align-items:start;}
  .faq-side{position:sticky;top:96px;}
}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--ink);border-radius:var(--radius-card);padding:32px 24px;
  display:flex;flex-direction:column;gap:20px;
}
.cta-band .cta-text h2{color:#fff;font-size:clamp(20px,2.6vw,28px);line-height:1.3;}
.cta-band .cta-text p{color:rgba(244,241,234,.72);font-size:14px;margin-top:8px;}
.cta-band .btn{width:100%;}
@media(min-width:768px){
  .cta-band{flex-direction:row;align-items:center;justify-content:space-between;gap:32px;padding:40px 44px;}
  .cta-band .btn{width:auto;}
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(244,241,234,.78);margin-top:56px;padding:52px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:16px;margin-bottom:14px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.1);}
.footer-about{font-size:13.5px;line-height:1.85;max-width:32em;color:rgba(244,241,234,.66);}
.footer-col h3{font-size:14px;color:#fff;font-weight:700;margin-bottom:14px;letter-spacing:.02em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:13.5px;color:rgba(244,241,234,.72);transition:color var(--ease);}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-direction:column;gap:8px;font-size:12.5px;color:rgba(244,241,234,.55);
}
.footer-bottom a{color:rgba(244,241,234,.8);}
.footer-bottom a:hover{color:var(--accent);}
@media(min-width:768px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px;}
  .footer-bottom{flex-direction:row;align-items:center;justify-content:space-between;}
}
@media(min-width:1024px){
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
}

/* ---------- 移动底部 Tab ---------- */
.mobile-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:120;
  background:rgba(255,255,255,.97);backdrop-filter:blur(6px);
  border-top:1px solid var(--line);
  display:grid;grid-template-columns:repeat(4,1fr);
  padding-bottom:env(safe-area-inset-bottom);
  height:calc(64px + env(safe-area-inset-bottom));
}
.tab-item{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;font-weight:600;color:var(--muted);transition:color var(--ease);
}
.tab-item svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.tab-item.is-active{color:var(--accent);font-weight:800;}
.tab-item.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:3px;border-radius:0 0 3px 3px;background:var(--accent);
}
.tab-item:hover{color:var(--ink-3);}
.tab-item.is-active:hover{color:var(--accent);}
body{padding-bottom:calc(64px + env(safe-area-inset-bottom));}
@media(min-width:1024px){
  .mobile-tab{display:none;}
  body{padding-bottom:0;}
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 420ms ease,transform 420ms ease;}
.reveal.is-visible{opacity:1;transform:none;}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --ink:#0F2A24;
  --ink-2:#16403A;
  --ink-3:#2C6A5C;
  --accent:#FF5A2B;
  --accent-deep:#ED4A1D;
  --accent-soft:#FFE8DF;
  --paper:#F7F5F0;
  --surface:#FFFFFF;
  --mist:#E4EEE8;
  --line:#E2DED6;
  --text:#1C1F1D;
  --muted:#6B716C;
  --radius-card:16px;
  --radius-img:12px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(15,42,36,.06);
  --shadow-2:0 12px 28px -12px rgba(15,42,36,.18);
  --max:1200px;
  --gutter:20px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
svg{display:block}
:focus-visible{outline:2px solid var(--ink-2);outline-offset:3px;border-radius:8px}

/* ---------- 容器 ---------- */
.container{
  width:100%;
  max-width:var(--max);
  margin:0 auto;
  padding-left:var(--gutter);
  padding-right:var(--gutter);
}
@media (min-width:768px){:root{--gutter:32px}}
@media (min-width:1024px){:root{--gutter:40px}}
@media (min-width:1280px){:root{--gutter:48px}}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,245,240,.94);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(150%) blur(10px);
  -webkit-backdrop-filter:saturate(150%) blur(10px);
  transition:box-shadow .22s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 24px -20px rgba(15,42,36,.6)}
.header-inner{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;font-weight:800;font-size:16px;color:var(--ink);letter-spacing:.01em}
.brand-mark{
  width:28px;height:28px;border-radius:9px;background:var(--mist);
  display:grid;place-items:center;flex-shrink:0;
}
.brand-mark svg{width:17px;height:17px}
.brand-text{white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;padding:10px 14px;border-radius:10px;
  font-size:15px;color:var(--muted);
  transition:color .2s ease,background .2s ease;
  white-space:nowrap;
}
.nav-link:hover{color:var(--ink-3);background:rgba(228,238,232,.75)}
.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-cta{margin-left:6px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-pill);border:1px solid transparent;
  font-weight:700;font-size:15px;line-height:1;
  padding:15px 28px;cursor:pointer;
  transition:transform .18s ease,background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 20px -16px rgba(255,90,43,1)}
.btn-primary:hover{background:var(--accent-deep);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--ink);border-color:rgba(15,42,36,.55)}
.btn-ghost:hover{background:var(--mist);border-color:var(--ink-3);color:var(--ink-2)}
.btn-sm{padding:11px 20px;font-size:14px}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.4;cursor:not-allowed;transform:none}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--ink-3);font-weight:700;font-size:14px;
  position:relative;padding-bottom:2px;
}
.link-arrow::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;
  background:currentColor;transition:width .25s ease;
}
.link-arrow:hover::after{width:100%}
.link-arrow svg{width:14px;height:14px;transition:transform .2s ease}
.link-arrow:hover svg{transform:translateX(3px)}

/* ---------- 通用区块 ---------- */
.section{padding:56px 0}
@media (min-width:768px){.section{padding:88px 0}}
.section-tight{padding:44px 0}
@media (min-width:768px){.section-tight{padding:64px 0}}
.section-head{max-width:680px;margin-bottom:32px}
.section-head h2{
  font-size:clamp(23px,3vw,36px);
  font-weight:800;line-height:1.22;letter-spacing:-.01em;
  color:var(--ink);
}
.section-head p{margin-top:12px;color:var(--muted);font-size:15.5px;max-width:40em}
.eyebrow{
  display:inline-flex;align-items:center;gap:12px;
  font-size:12px;font-weight:700;letter-spacing:.22em;
  color:var(--ink-3);margin-bottom:18px;
}
.eyebrow::before,.eyebrow::after{content:"";width:24px;height:1px;background:currentColor;opacity:.5}
.rule{height:1px;background:var(--line);border:0;margin:0}

/* ---------- 面包屑 ---------- */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:12px;color:var(--muted);padding:20px 0;
}
.crumbs a{transition:color .2s ease}
.crumbs a:hover{color:var(--ink-3)}
.crumbs .sep{opacity:.55}
.crumbs .current{color:var(--ink);font-weight:700}

/* ---------- 首屏 ---------- */
.page-hero{padding-bottom:0}
.hero-grid{display:grid;gap:36px;padding-bottom:48px}
@media (min-width:1024px){
  .hero-grid{grid-template-columns:1.1fr .9fr;align-items:center;gap:56px;padding-bottom:64px}
}
.hero-copy h1{
  font-size:clamp(30px,4.4vw,54px);
  font-weight:800;line-height:1.1;letter-spacing:-.02em;
  color:var(--ink);
  max-width:15em;
}
.hero-lead{
  margin-top:20px;font-size:16.5px;line-height:1.8;
  color:var(--muted);max-width:32em;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;line-height:1;
  padding:7px 12px;border-radius:6px;
}
.badge-mist{background:var(--mist);color:var(--ink-2)}
.badge-accent{background:var(--accent-soft);color:#A83513}
.badge-ink{background:var(--ink);color:#fff}
.hero-media{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  background:var(--mist);box-shadow:var(--shadow-2);
  aspect-ratio:16/11;
}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(15,42,36,0) 45%,rgba(15,42,36,.42) 100%);
}
.hero-tag{
  position:absolute;left:16px;bottom:16px;z-index:2;
  background:var(--accent-soft);color:#8C2C0F;
  font-size:12px;font-weight:700;padding:8px 14px;border-radius:8px;
  line-height:1.2;
}
.stats{
  display:grid;grid-template-columns:repeat(2,1fr);
  border-top:1px solid var(--line);
  padding:8px 0 4px;
}
@media (min-width:768px){.stats{grid-template-columns:repeat(4,1fr)}}
.stat{padding:16px 14px;border-left:1px solid var(--line)}
.stat:first-child{border-left:0;padding-left:0}
@media (max-width:767px){
  .stat:nth-child(odd){border-left:0;padding-left:0}
}
.stat-num{
  font-family:"Inter",system-ui,sans-serif;
  font-feature-settings:"tnum";
  font-size:28px;font-weight:800;line-height:1.1;color:var(--ink);
}
.stat-num span{font-size:13px;font-weight:700;color:var(--ink-3);margin-left:2px}
.stat-label{font-size:12.5px;color:var(--muted);margin-top:4px}

/* ---------- 编号流程 ---------- */
.flow{
  border-top:1px solid var(--line);
  margin-top:8px;
}
.flow-item{
  display:grid;grid-template-columns:auto 1fr;gap:18px;
  padding:26px 0;border-bottom:1px solid var(--line);
  transition:background .2s ease;
}
@media (min-width:768px){
  .flow-item{grid-template-columns:130px 1fr;gap:40px;padding:34px 0}
}
.flow-num{
  font-family:"Inter",system-ui,sans-serif;
  font-feature-settings:"tnum";
  font-size:34px;font-weight:800;line-height:1;letter-spacing:.02em;
  color:transparent;-webkit-text-stroke:1.2px rgba(44,106,92,.6);
  transition:color .2s ease;
}
@media (min-width:768px){.flow-num{font-size:48px}}
.flow-item:hover .flow-num{color:rgba(44,106,92,.16)}
.flow-body h3{font-size:19px;font-weight:700;color:var(--ink);line-height:1.4}
.flow-body p{margin-top:8px;color:var(--muted);font-size:15.5px;max-width:42em}
.flow-note{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:26px;font-size:13.5px;color:var(--muted);
}

/* ---------- 雾绿要点带 ---------- */
.band{background:var(--mist);padding:48px 0}
@media (min-width:768px){.band{padding:68px 0}}
.band-title{
  font-size:clamp(21px,2.6vw,30px);font-weight:800;line-height:1.25;
  color:var(--ink);margin-bottom:28px;max-width:20em;
}
.band-grid{display:grid;gap:26px}
@media (min-width:768px){
  .band-grid{grid-template-columns:repeat(3,1fr);gap:0}
  .band-item{padding:0 30px;border-left:1px solid rgba(15,42,36,.16)}
  .band-item:first-child{padding-left:0;border-left:0}
  .band-item:last-child{padding-right:0}
}
.band-item h3{font-size:17px;font-weight:800;color:var(--ink);display:flex;align-items:center;gap:8px}
.band-item h3::before{
  content:"";width:8px;height:8px;border-radius:2px;background:var(--accent);flex-shrink:0;
}
.band-item p{margin-top:8px;font-size:15px;color:#3B4A45;line-height:1.8}

/* ---------- 设置分栏 ---------- */
.split{display:grid;gap:36px}
@media (min-width:1024px){.split{grid-template-columns:.85fr 1.15fr;gap:64px;align-items:start}}
.split-media{
  border-radius:var(--radius-card);overflow:hidden;background:var(--mist);
  aspect-ratio:4/3;box-shadow:var(--shadow-1);
}
.split-media img{width:100%;height:100%;object-fit:cover}
.setting-list{border-top:1px solid var(--line)}
.setting-item{
  display:grid;grid-template-columns:auto 1fr;gap:16px;
  padding:20px 0;border-bottom:1px solid var(--line);
}
.setting-dot{
  width:30px;height:30px;border-radius:9px;background:var(--mist);
  display:grid;place-items:center;color:var(--ink-3);flex-shrink:0;
}
.setting-dot svg{width:16px;height:16px}
.setting-item h3{font-size:16.5px;font-weight:700;color:var(--ink);line-height:1.5}
.setting-item p{margin-top:4px;font-size:15px;color:var(--muted);line-height:1.8}

/* ---------- 风险对照表 ---------- */
.table-wrap{
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--surface);overflow-x:auto;box-shadow:var(--shadow-1);
}
.risk-table{width:100%;border-collapse:collapse;font-size:15px;min-width:560px}
.risk-table thead th{
  text-align:left;padding:16px 20px;
  font-size:12px;font-weight:700;letter-spacing:.14em;
  color:var(--ink-3);background:#FBFAF7;
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
.risk-table td{padding:18px 20px;border-bottom:1px solid var(--line);vertical-align:top;color:var(--text)}
.risk-table tbody tr:last-child td{border-bottom:0}
.risk-table tbody tr{transition:background .2s ease}
.risk-table tbody tr:hover{background:var(--mist)}
.risk-table td:first-child{font-weight:600;color:var(--ink);width:44%}
.risk-table td:last-child{color:var(--muted)}
.figure-block{margin-top:32px}
.figure-block figure{
  border-radius:var(--radius-card);overflow:hidden;background:var(--mist);
  aspect-ratio:21/9;
}
.figure-block img{width:100%;height:100%;object-fit:cover}
.figure-block figcaption{
  margin-top:10px;font-size:12.5px;color:var(--muted);text-align:center;
}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;gap:28px}
@media (min-width:1024px){.faq-grid{grid-template-columns:.75fr 1.25fr;gap:64px;align-items:start}}
.faq-side h2{
  font-size:clamp(23px,3vw,34px);font-weight:800;line-height:1.24;color:var(--ink);
}
.faq-side p{margin-top:12px;color:var(--muted);font-size:15px;max-width:22em}
.faq-side .link-arrow{margin-top:18px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;background:none;border:0;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  text-align:left;padding:22px 0;
  font-size:16.5px;font-weight:700;color:var(--ink);
  line-height:1.55;transition:color .2s ease;
  position:relative;
}
.faq-q:hover{color:var(--ink-3)}
.faq-item.is-open .faq-q{color:var(--ink-3)}
.faq-icon{
  position:relative;width:16px;height:16px;flex-shrink:0;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:currentColor;border-radius:1px;
  transition:transform .22s ease,opacity .22s ease;
}
.faq-icon::before{left:0;top:7.5px;width:16px;height:1.5px}
.faq-icon::after{left:7.5px;top:0;width:1.5px;height:16px}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .26s ease;
}
.faq-item.is-open .faq-a{max-height:340px}
.faq-a p{
  padding:0 0 22px 0;font-size:15px;color:var(--muted);line-height:1.85;
  max-width:44em;
}

/* ---------- CTA ---------- */
.cta-bar{
  background:var(--ink);color:#fff;border-radius:20px;
  padding:32px 24px;display:grid;gap:22px;
}
@media (min-width:768px){
  .cta-bar{grid-template-columns:1fr auto;align-items:center;padding:44px 48px;gap:32px}
}
.cta-bar h2{
  font-size:clamp(20px,2.4vw,28px);font-weight:800;line-height:1.3;color:#fff;
}
.cta-bar p{margin-top:8px;font-size:14.5px;color:rgba(255,255,255,.7);max-width:34em}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-bar .btn-ghost{color:#fff;border-color:rgba(255,255,255,.5)}
.cta-bar .btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);color:#EDF3F0;
  padding:56px 0 26px;margin-top:64px;
}
@media (min-width:768px){.site-footer{margin-top:88px}}
.footer-grid{display:grid;gap:34px}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}}
.footer-brand{
  display:flex;align-items:center;gap:10px;
  font-weight:800;font-size:16px;color:#fff;margin-bottom:14px;
}
.footer-brand .brand-mark{background:rgba(255,255,255,.13)}
.footer-about{
  font-size:13.5px;line-height:1.85;color:rgba(237,243,240,.68);
  max-width:34em;
}
.footer-col h3{
  font-size:12.5px;font-weight:700;letter-spacing:.16em;
  color:rgba(237,243,240,.55);margin-bottom:14px;
}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:rgba(237,243,240,.85);transition:color .2s ease}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  border-top:1px solid rgba(255,255,255,.12);
  margin-top:40px;padding-top:20px;
  font-size:12.5px;color:rgba(237,243,240,.58);
}
.footer-bottom a{
  color:rgba(237,243,240,.82);
  text-decoration:underline;text-underline-offset:3px;
}
.footer-bottom a:hover{color:var(--accent)}

/* ---------- 移动底部 Tab ---------- */
.mobile-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:none;background:#fff;border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -8px 24px -18px rgba(15,42,36,.45);
}
.mobile-tab-inner{display:grid;grid-template-columns:repeat(4,1fr);height:64px}
.tab-item{
  position:relative;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--muted);
  transition:color .2s ease;
}
.tab-item svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.tab-item.is-active{color:var(--accent);font-weight:700}
.tab-item.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:24px;height:3px;border-radius:0 0 3px 3px;background:var(--accent);
}
@media (max-width:1023px){
  .main-nav{display:none}
  .mobile-tab{display:block}
  body{padding-bottom:calc(64px + env(safe-area-inset-bottom))}
  .header-inner{height:64px}
}
@media (max-width:520px){
  .brand-text{font-size:14.5px}
  .header-cta{padding:10px 16px;font-size:13px}
  .hero-actions .btn{flex:1 1 100%}
  .stat-num{font-size:24px}
}

/* ---------- 进场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s ease,transform .42s ease}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}