/* roulang page: index */
:root{
  --c-ink:#12161A;
  --c-brand:#0E9F86;
  --c-brand-deep:#0A7A67;
  --c-accent:#F0A227;
  --c-bg:#F6F5F1;
  --c-surface:#FFFFFF;
  --c-line:#E4E2DB;
  --c-muted:#5C646D;
  --c-dark:#101418;
  --c-dark-text:#EDEBE5;
  --c-dark-link:#7FD8C6;
  --radius-card:6px;
  --radius-btn:4px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(18,22,26,.06);
  --shadow-2:0 6px 18px rgba(18,22,26,.10);
  --mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:system-ui,"PingFang SC","Microsoft YaHei",sans-serif;
  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:inherit;color:inherit;background:none;border:0;cursor:pointer}
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(--c-brand);outline-offset:2px}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1536px){.container{max-width:1280px}}
@media (max-width:767px){.container{padding:0 18px}}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.section{padding:64px 0}
@media (min-width:1024px){.section{padding:80px 0}}
@media (min-width:1280px){.section{padding:96px 0}}
@media (max-width:767px){.section{padding:40px 0}}
.section-dark{background:var(--c-dark);color:var(--c-dark-text)}
.section-alt{background:var(--c-surface)}

/* 眉标与标题 */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;font-weight:600;color:var(--c-brand);
  text-transform:uppercase;
}
.eyebrow::before{content:"";width:8px;height:2px;background:var(--c-accent);display:block}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
.section-title{font-size:30px;line-height:1.25;font-weight:700;letter-spacing:-.01em}
@media (min-width:1024px){.section-title{font-size:34px}}
.section-desc{margin-top:10px;color:var(--c-muted);font-size:15px;max-width:640px}
.section-dark .section-desc{color:#9AA3AC}

/* 刻度尺装饰 */
.ruler{
  height:10px;
  background-image:repeating-linear-gradient(to right, currentColor 0 1px, transparent 1px 10px);
  opacity:.25;
  color:var(--c-ink);
}
.section-dark .ruler{color:#EDEBE5;opacity:.18}
.ruler-strong{opacity:.45}

/* 点阵装饰 */
.dot-grid{
  background-image:radial-gradient(rgba(14,159,134,.30) 1px, transparent 1px);
  background-size:8px 8px;
}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,245,241,.94);
  backdrop-filter:blur(6px);
  border-bottom:1px solid transparent;
  transition:background .25s ease, border-color .25s ease;
}
.site-header.is-scrolled{background:rgba(255,255,255,.92);border-bottom-color:var(--c-line)}
.nav-wrap{display:flex;align-items:center;gap:20px;height:68px;transition:height .25s ease}
.site-header.is-scrolled .nav-wrap{height:60px}
.logo{display:flex;align-items:center;gap:10px;flex:none}
.logo-mark{
  width:32px;height:32px;border-radius:4px;background:var(--c-ink);color:#EDEBE5;
  display:grid;place-items:center;font-family:var(--mono);font-weight:700;font-size:13px;letter-spacing:.02em;
}
.logo-text{font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.nav-tabs{
  display:flex;align-items:center;gap:4px;padding:4px;margin-left:8px;
  background:#EFEEE9;border:1px solid var(--c-line);border-radius:var(--radius-pill);
  overflow-x:auto;scrollbar-width:none;
}
.nav-tabs::-webkit-scrollbar{display:none}
.nav-chip{
  display:inline-flex;align-items:center;height:32px;padding:0 16px;border-radius:var(--radius-pill);
  font-size:14px;color:#3C434A;white-space:nowrap;transition:color .2s ease,background .2s ease;
}
.nav-chip:hover{color:var(--c-brand)}
.nav-chip.is-active{background:#fff;color:var(--c-brand);font-weight:600;box-shadow:var(--shadow-1)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:14px;flex:none}
.nav-phone{font-size:13px;color:var(--c-muted);font-family:var(--mono)}
.nav-toggle{display:none;width:44px;height:44px;border-radius:var(--radius-btn);border:1px solid var(--c-line)}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);margin:3px auto;border-radius:2px}
.mobile-panel{display:none;border-top:1px solid var(--c-line);background:#fff;padding:16px 0 20px}
.mobile-panel.is-open{display:block}
.mobile-panel .m-chip{
  display:block;padding:12px 14px;border:1px solid var(--c-line);border-radius:var(--radius-card);
  margin-bottom:8px;font-size:15px;
}
.mobile-panel .m-chip.is-active{border-color:var(--c-brand);color:var(--c-brand);font-weight:600}
@media (max-width:1023px){
  .nav-tabs,.nav-phone{display:none}
  .nav-toggle{display:block}
  .nav-actions .btn{display:none}
}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);font-weight:600;font-size:15px;
  padding:14px 28px;min-height:48px;
  transition:transform .18s ease, background .18s ease, color .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.btn-sm{padding:10px 18px;min-height:40px;font-size:14px}
.btn-primary{background:var(--c-accent);color:#12161A}
.btn-primary:hover{background:#D98C14;transform:translateY(-2px);box-shadow:0 8px 20px rgba(240,162,39,.28)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-outline{border:1.5px solid var(--c-ink);color:var(--c-ink);background:transparent}
.btn-outline:hover{background:rgba(14,159,134,.08);border-color:var(--c-brand);color:var(--c-brand-deep)}
.btn-outline-light{border:1.5px solid rgba(237,235,229,.5);color:var(--c-dark-text)}
.btn-outline-light:hover{background:rgba(127,216,198,.12);border-color:var(--c-dark-link);color:var(--c-dark-link)}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--c-brand);font-weight:600;font-size:15px;
  padding:0;min-height:0;
}
.btn-link .arrow{transition:transform .2s ease}
.btn-link:hover .arrow{transform:translateX(4px)}
.btn-link:hover{color:var(--c-brand-deep)}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

/* ===== Hero ===== */
.hero{position:relative;background:var(--c-dark);color:var(--c-dark-text);overflow:hidden}
.hero::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(127,216,198,.10) 1px, transparent 1px);
  background-size:8px 8px;pointer-events:none;
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1fr;gap:40px;padding:56px 0 64px}
@media (min-width:1024px){
  .hero-grid{grid-template-columns:60fr 40fr;gap:56px;align-items:center;padding:80px 0 88px}
}
.hero-title{
  font-size:32px;line-height:1.15;font-weight:700;letter-spacing:-.02em;margin-top:16px;
}
@media (min-width:1024px){.hero-title{font-size:48px}}
@media (min-width:1280px){.hero-title{font-size:52px}}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.7;color:#B9C0C7;max-width:34ch}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
@media (max-width:639px){.hero-cta .btn{width:100%}}
.trust{display:flex;flex-wrap:wrap;margin-top:34px;border-top:1px solid rgba(237,235,229,.16);padding-top:20px}
.trust-item{padding-right:22px;margin-right:22px;border-right:1px solid rgba(237,235,229,.16)}
.trust-item:last-child{border-right:0;margin-right:0;padding-right:0}
.trust-num{font-family:var(--mono);font-size:20px;font-weight:700;color:var(--c-dark-link)}
.trust-label{font-size:12.5px;color:#9AA3AC;margin-top:2px}
.hero-figure{position:relative}
.hero-frame{position:relative;border:1px solid rgba(237,235,229,.28);border-radius:var(--radius-card);overflow:hidden;background:#0B0E11}
.hero-frame img{width:100%;aspect-ratio:16/10;object-fit:cover;opacity:.94}
.corner{position:absolute;width:14px;height:14px;border:1.5px solid var(--c-brand);z-index:3}
.corner.tl{top:-1px;left:-1px;border-right:0;border-bottom:0}
.corner.tr{top:-1px;right:-1px;border-left:0;border-bottom:0}
.corner.bl{bottom:-1px;left:-1px;border-right:0;border-top:0}
.corner.br{bottom:-1px;right:-1px;border-left:0;border-top:0}
.hero-figure figcaption{margin-top:12px;font-size:13px;color:#8C949C}

/* 图片通用 */
.img-card{border:1px solid var(--c-line);border-radius:var(--radius-card);overflow:hidden;background:var(--c-surface);box-shadow:var(--shadow-1)}
.img-card img{width:100%;aspect-ratio:16/10;object-fit:cover}

/* ===== 卖点三连 ===== */
.points{display:grid;grid-template-columns:1fr;gap:16px}
@media (min-width:1024px){.points{grid-template-columns:repeat(12,1fr);gap:24px}}
.point-main{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-1);border-bottom:3px solid var(--c-brand);
  display:flex;flex-direction:column;gap:14px;
}
@media (min-width:1024px){.point-main{grid-column:span 6;padding:32px}}
.point-side{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
@media (min-width:1024px){.point-side{grid-column:span 3}}
.point-side:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(14,159,134,.4)}
.point-no{font-family:var(--mono);font-size:13px;font-weight:700;color:var(--c-accent);letter-spacing:.08em}
.point-title{font-size:20px;line-height:1.4;font-weight:600;margin-top:6px}
.point-text{color:var(--c-muted);font-size:14.5px;line-height:1.75;margin-top:8px}
.point-main .point-title{font-size:22px}

/* ===== 场景演示 ===== */
.scene{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:1024px){.scene{grid-template-columns:260px 1fr;gap:32px}}
.scene-tabs{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;scrollbar-width:none}
.scene-tabs::-webkit-scrollbar{display:none}
@media (min-width:1024px){.scene-tabs{flex-direction:column;overflow:visible;padding-bottom:0}}
.scene-tab{
  flex:none;text-align:left;padding:12px 16px;border-radius:var(--radius-card);
  border:1px solid var(--c-line);background:var(--c-surface);font-size:15px;color:#3C434A;
  white-space:nowrap;transition:all .2s ease;
}
@media (min-width:1024px){.scene-tab{white-space:normal;border-left:2px solid transparent;border-radius:0 var(--radius-card) var(--radius-card) 0}}
.scene-tab:hover{border-color:rgba(14,159,134,.4)}
.scene-tab.is-active{
  border-left:2px solid var(--c-brand);background:rgba(14,159,134,.08);
  color:var(--c-brand-deep);font-weight:600;border-color:var(--c-line);
}
.scene-panel{display:none}
.scene-panel.is-active{display:grid;gap:24px}
@media (min-width:768px){.scene-panel.is-active{grid-template-columns:1fr 1fr;align-items:center;gap:32px}}
.scene-panel h3{font-size:22px;font-weight:600;line-height:1.4}
.scene-panel p{color:var(--c-muted);margin-top:12px;font-size:15px}
.scene-list{margin-top:16px;display:grid;gap:8px}
.scene-list li{display:flex;gap:10px;font-size:14.5px;color:#3C434A}
.scene-list li::before{content:"";width:6px;height:6px;background:var(--c-brand);border-radius:1px;margin-top:9px;flex:none}
.scene-caption{margin-top:10px;font-size:13px;color:var(--c-muted)}

/* ===== 资讯列表 ===== */
.news-feature{
  display:grid;gap:20px;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
@media (min-width:768px){.news-feature{grid-template-columns:1fr 1.1fr}}
.news-feature:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(14,159,134,.4)}
.news-feature-media{position:relative;background:#EFEEE9;display:block}
.news-feature-media img{width:100%;height:100%;min-height:220px;object-fit:cover;aspect-ratio:16/10}
.news-feature-body{padding:24px 24px 26px}
@media (min-width:768px){.news-feature-body{padding:32px 32px 32px 0}}
.news-feature h3{font-size:22px;line-height:1.45;font-weight:600;margin-top:14px}
.news-feature h3 a:hover{color:var(--c-brand)}
.news-feature p{color:var(--c-muted);font-size:14.5px;margin-top:10px}
.news-grid{display:grid;grid-template-columns:1fr;gap:16px;margin-top:16px}
@media (min-width:640px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.news-grid{grid-template-columns:repeat(4,1fr);gap:24px}}
.news-card{
  display:flex;flex-direction:column;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(14,159,134,.4)}
.news-card:hover h3 a{color:var(--c-brand)}
.news-thumb{position:relative;background:#EFEEE9}
.news-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover}
.news-thumb.placeholder{aspect-ratio:16/10;background-color:#F1F0EB;background-image:radial-gradient(rgba(14,159,134,.22) 1px, transparent 1px);background-size:8px 8px}
.news-body{padding:16px 18px 18px;display:flex;flex-direction:column;flex:1}
.news-card h3{font-size:17px;line-height:1.5;font-weight:600;margin-top:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card h3 a{transition:color .2s ease}
.news-card p{color:var(--c-muted);font-size:14px;margin-top:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{
  margin-top:auto;padding-top:14px;display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--c-muted);
}
.news-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--c-line)}
.news-meta .go{margin-left:auto;color:var(--c-brand);font-weight:600}
.chip{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:var(--radius-pill);
  border:1px solid rgba(14,159,134,.45);color:var(--c-brand-deep);font-size:12px;font-weight:600;
  background:rgba(14,159,134,.06);white-space:nowrap;
}
.empty-state{
  border:1px dashed var(--c-line);border-radius:var(--radius-card);padding:48px 24px;text-align:center;
  color:var(--c-muted);background:var(--c-surface);
}
.empty-state strong{display:block;color:var(--c-ink);font-size:16px;margin-bottom:6px}

/* ===== 社会认同 ===== */
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:24px 16px}
@media (min-width:1024px){.stats{grid-template-columns:repeat(4,1fr);gap:24px}}
.stat-num{font-family:var(--mono);font-size:40px;font-weight:700;line-height:1;color:var(--c-ink);letter-spacing:-.02em}
@media (min-width:1024px){.stat-num{font-size:56px}}
.section-dark .stat-num{color:var(--c-dark-link)}
.stat-label{margin-top:10px;font-size:14px;color:var(--c-muted)}
.section-dark .stat-label{color:#9AA3AC}
.logo-wall{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:40px}
@media (min-width:640px){.logo-wall{grid-template-columns:repeat(3,1fr)}}
@media (min-width:1024px){.logo-wall{grid-template-columns:repeat(6,1fr)}}
.logo-wall span{
  display:grid;place-items:center;height:64px;border:1px solid var(--c-line);border-radius:var(--radius-card);
  background:var(--c-surface);color:#8C949C;font-size:13.5px;letter-spacing:.02em;
}
.section-dark .logo-wall span{background:rgba(255,255,255,.03);border-color:rgba(237,235,229,.12);color:#8C949C}
.quotes{display:grid;gap:20px;margin-top:40px}
@media (min-width:1024px){.quotes{grid-template-columns:repeat(3,1fr);gap:24px}}
.quote{border-left:3px solid var(--c-brand);padding:4px 0 4px 18px}
.quote p{font-size:15px;line-height:1.8;color:#D6D2CA}
.section-light .quote p{color:#3C434A}
.quote footer{margin-top:12px;font-size:13px;color:#8C949C}

/* ===== FAQ ===== */
.faq{max-width:880px;margin:0 auto;border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;text-align:left;font-size:17px;font-weight:600;line-height:1.5;
}
.faq-q:hover{color:var(--c-brand-deep)}
.faq-icon{
  flex:none;width:26px;height:26px;border-radius:4px;border:1px solid var(--c-line);
  display:grid;place-items:center;font-family:var(--mono);font-size:15px;color:var(--c-muted);
  transition:all .2s ease;
}
.faq-item.is-open .faq-icon{background:var(--c-brand);border-color:var(--c-brand);color:#fff}
.faq-a{display:none;padding:0 4px 24px}
.faq-item.is-open .faq-a{display:block}
.faq-a p{font-size:15px;line-height:1.8;color:var(--c-muted)}

/* ===== CTA 区 ===== */
.cta-section{position:relative;background:var(--c-dark);color:var(--c-dark-text);overflow:hidden}
.cta-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.18}
.cta-inner{position:relative;z-index:2;display:grid;gap:40px;padding:64px 0}
@media (min-width:1024px){.cta-inner{grid-template-columns:1fr 1fr;gap:56px;padding:80px 0;align-items:start}}
.cta-inner h2{font-size:30px;line-height:1.3;font-weight:700;letter-spacing:-.01em}
@media (min-width:1024px){.cta-inner h2{font-size:34px}}
.cta-inner p.lead{margin-top:14px;color:#B9C0C7;font-size:15.5px;max-width:44ch}
.cta-points{margin-top:24px;display:grid;gap:10px}
.cta-points li{display:flex;gap:10px;font-size:14.5px;color:#D6D2CA}
.cta-points li::before{content:"";flex:none;width:6px;height:6px;background:var(--c-accent);border-radius:1px;margin-top:9px}
.form-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);padding:26px;box-shadow:var(--shadow-2)}
.form-card h3{font-size:19px;font-weight:600}
.form-card .hint{font-size:13px;color:var(--c-muted);margin-top:6px}
.field{margin-top:16px}
.field label{display:block;font-size:13px;color:#3C434A;margin-bottom:6px}
.field .req{color:var(--c-accent);margin-left:2px}
.field input,.field textarea{
  width:100%;background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-btn);
  padding:12px 14px;min-height:48px;font-size:15px;transition:border-color .2s ease, box-shadow .2s ease;
}
.field textarea{min-height:96px;resize:vertical}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--c-brand);box-shadow:0 0 0 3px rgba(14,159,134,.12);
}
.field.error input,.field.error textarea{border-color:#C0392B}
.field .err{display:none;font-size:12px;color:#C0392B;margin-top:5px}
.field.error .err{display:block}
.privacy{font-size:12px;color:var(--c-muted);margin-top:12px}
.form-note{margin-top:12px;font-size:13px;color:var(--c-brand-deep);display:none}
.form-note.show{display:block}
@media (max-width:639px){.form-card{padding:20px}.form-card .btn{width:100%}}

/* ===== 页脚 ===== */
.site-footer{background:var(--c-dark);color:#9AA3AC;padding-top:0}
.footer-cols{display:grid;grid-template-columns:1fr;gap:32px;padding:48px 0 32px}
@media (min-width:768px){.footer-cols{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#EDEBE5}
.footer-brand .logo-mark{background:#EDEBE5;color:var(--c-dark)}
.footer-brand span{font-size:16px;font-weight:700}
.footer-desc{margin-top:14px;font-size:14px;line-height:1.8;max-width:34ch}
.footer-col h4{font-size:13px;letter-spacing:.1em;color:#EDEBE5;font-weight:600;margin-bottom:14px;text-transform:uppercase}
.footer-col li{margin-bottom:9px;font-size:14px}
.footer-col a{transition:color .2s ease}
.footer-col a:hover{color:var(--c-dark-link)}
.footer-bottom{
  border-top:1px solid rgba(237,235,229,.12);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:10px 20px;font-size:13px;
}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:16px}
.footer-bottom a:hover{color:var(--c-dark-link)}

/* ===== 底部固定转化条 ===== */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:#fff;border-top:1px solid var(--c-line);
  display:flex;align-items:center;gap:12px;padding:10px 18px;
  transform:translateY(110%);transition:transform .3s ease;
  box-shadow:0 -4px 16px rgba(18,22,26,.08);
}
.sticky-cta.is-visible{transform:translateY(0)}
.sticky-cta .txt{font-size:14px;color:#3C434A}
.sticky-cta .txt strong{color:var(--c-ink)}
.sticky-cta .btn{margin-left:auto;padding:12px 20px;min-height:44px;font-size:14px}
@media (min-width:1024px){
  .sticky-cta{
    left:auto;right:24px;bottom:24px;border-radius:var(--radius-pill);
    border:1px solid var(--c-line);padding:8px 10px 8px 20px;
    box-shadow:var(--shadow-2);max-width:520px;
  }
  .sticky-cta.is-visible{transform:translateY(0)}
}
.to-top{
  position:fixed;right:24px;bottom:96px;z-index:65;width:44px;height:44px;border-radius:var(--radius-btn);
  background:var(--c-surface);border:1px solid var(--c-line);box-shadow:var(--shadow-1);
  display:none;place-items:center;font-family:var(--mono);font-size:15px;color:var(--c-brand);
}
.to-top.is-visible{display:grid}
@media (max-width:1023px){.to-top{display:none !important}}

/* 动效 */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s ease,transform .5s ease}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  *{animation:none !important;transition:none !important}
}

/* roulang page: article */
:root{
  --c-ink:#12161A;
  --c-brand:#0E9F86;
  --c-brand-deep:#0A7A67;
  --c-accent:#F0A227;
  --c-accent-deep:#D98C14;
  --c-bg:#F6F5F1;
  --c-surface:#FFFFFF;
  --c-line:#E4E2DB;
  --c-muted:#5C646D;
  --c-dark:#101418;
  --c-dark-text:#EDEBE5;
  --c-dark-link:#7FD8C6;
  --r-card:6px;
  --r-btn:4px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(18,22,26,.06);
  --sh-2:0 6px 18px rgba(18,22,26,.10);
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.75;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1536px){.container{max-width:1280px}}
:focus-visible{outline:2px solid var(--c-brand);outline-offset:2px;border-radius:3px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  height:68px;
  background:rgba(246,245,241,.94);
  border-bottom:1px solid var(--c-line);
  backdrop-filter:blur(6px);
  transition:height .22s ease,box-shadow .22s ease;
}
.site-header.is-scrolled{height:60px;box-shadow:0 1px 2px rgba(18,22,26,.06)}
.header-inner{display:flex;align-items:center;gap:24px;height:68px;transition:height .22s ease}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:4px;background:var(--c-ink);color:#EDEBE5;
  display:grid;place-items:center;font-family:var(--mono);font-weight:700;font-size:15px;
  border:1px solid #2A3138;letter-spacing:.02em;
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.brand-text em{font-style:normal;color:var(--c-brand)}
.nav-tabs{
  display:flex;align-items:center;gap:4px;
  padding:4px;border:1px solid var(--c-line);border-radius:var(--r-pill);
  background:#EFEEE9;overflow-x:auto;scrollbar-width:none;
}
.nav-tabs::-webkit-scrollbar{display:none}
.nav-chip{
  padding:8px 16px;border-radius:var(--r-pill);font-size:14px;color:#4A535B;
  white-space:nowrap;transition:background .2s ease,color .2s ease,box-shadow .2s ease;
}
.nav-chip:hover{color:var(--c-brand-deep);background:rgba(255,255,255,.72)}
.nav-chip.is-active{background:#fff;color:var(--c-brand);font-weight:600;box-shadow:var(--sh-1)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:18px}
.header-hours{font-size:13px;color:var(--c-muted);font-family:var(--mono);white-space:nowrap}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:#fff;place-items:center;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-ink);
}
.nav-toggle span::before{top:-6px}.nav-toggle span::after{top:6px}
.mobile-panel{display:none;border-top:1px solid var(--c-line);background:#fff;padding:16px 0 20px}
.mobile-panel.is-open{display:block}
.mobile-panel .nav-tabs{background:#EFEEE9;border-radius:6px;padding:6px;flex-direction:column;align-items:stretch;overflow:visible}
.mobile-panel .nav-chip{text-align:center;padding:12px}
.mobile-panel .btn{width:100%;justify-content:center;margin-top:14px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1.5px solid transparent;cursor:pointer;
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease,color .2s ease;
}
.btn-primary{background:var(--c-accent);color:var(--c-ink)}
.btn-primary:hover{background:var(--c-accent-deep);transform:translateY(-2px);box-shadow:0 8px 20px rgba(240,162,39,.28)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{border-color:var(--c-ink);color:var(--c-ink);background:transparent;padding:12px 24px}
.btn-ghost:hover{border-color:var(--c-brand);color:var(--c-brand-deep);background:rgba(14,159,134,.08)}
.btn-dark-ghost{border-color:#3A4249;color:var(--c-dark-text);background:transparent}
.btn-dark-ghost:hover{border-color:var(--c-dark-link);color:var(--c-dark-link);background:rgba(127,216,198,.10)}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;color:var(--c-brand);font-weight:600;font-size:14px;
  border-bottom:1px solid rgba(14,159,134,.35);padding-bottom:2px;transition:gap .2s ease,color .2s ease;
}
.link-arrow:hover{color:var(--c-brand-deep);gap:10px}

/* ---------- page head ---------- */
.crumbs{font-size:13px;color:var(--c-muted);padding:22px 0 0}
.crumbs a:hover{color:var(--c-brand)}
.crumbs span.sep{margin:0 8px;color:#B9B7B0}
.page-head{padding:18px 0 8px;border-bottom:1px solid var(--c-line)}
.cat-chip{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:var(--r-pill);
  border:1px solid rgba(14,159,134,.45);color:var(--c-brand-deep);font-size:12px;
  background:rgba(14,159,134,.06);letter-spacing:.02em;
}
.article-title{font-size:34px;font-weight:700;letter-spacing:-.02em;line-height:1.2;max-width:900px}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  font-size:13px;color:var(--c-muted);font-family:var(--mono);margin-top:14px;
}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:#B9B7B0}
.article-meta .cat{font-family:system-ui,"PingFang SC",sans-serif;color:var(--c-brand-deep)}
@media (min-width:1024px){.article-title{font-size:44px}}
@media (min-width:1280px){.article-title{font-size:48px}}

/* ---------- cover ---------- */
.cover-wrap{margin-top:32px;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;background:#fff;position:relative}
.cover-wrap img{width:100%;aspect-ratio:16/10;object-fit:cover}
.cover-wrap::before,.cover-wrap::after{
  content:"";position:absolute;width:12px;height:12px;border:1px solid rgba(14,159,134,.75);
}
.cover-wrap::before{top:8px;left:8px;border-right:0;border-bottom:0}
.cover-wrap::after{bottom:8px;right:8px;border-left:0;border-top:0}

/* ---------- layout ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:48px;padding:48px 0 8px}
@media (min-width:1280px){
  .article-layout{grid-template-columns:minmax(0,1fr) 320px;gap:64px}
}
.article-body{max-width:760px;font-size:17px;line-height:1.9;color:#2A3138}
.article-body > * + *{margin-top:1.15em}
.article-body p{margin:0}
.article-body h2{font-size:27px;font-weight:700;color:var(--c-ink);margin:2em 0 .6em;padding-left:14px;position:relative}
.article-body h2::before{content:"";position:absolute;left:0;top:.28em;width:3px;height:1em;background:var(--c-accent)}
.article-body h3{font-size:21px;font-weight:600;color:var(--c-ink);margin:1.7em 0 .5em}
.article-body ul,.article-body ol{padding-left:22px}
.article-body li{margin:.4em 0}
.article-body ul li::marker{color:var(--c-brand)}
.article-body ol li::marker{color:var(--c-brand);font-family:var(--mono)}
.article-body blockquote{
  margin:1.6em 0;padding:16px 20px;border-left:3px solid var(--c-brand);
  background:rgba(14,159,134,.07);border-radius:0 var(--r-card) var(--r-card) 0;
  color:#2A3138;
}
.article-body img{border-radius:var(--r-card);border:1px solid var(--c-line);margin:1.4em 0 .6em}
.article-body figcaption,.article-body .caption{
  font-size:13px;color:var(--c-muted);text-align:center;line-height:1.6;margin-bottom:1.4em;
}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:1.5em 0;border:1px solid var(--c-line)}
.article-body thead th{background:var(--c-dark);color:var(--c-dark-text);text-align:left;font-weight:600;padding:11px 14px}
.article-body tbody td{padding:11px 14px;border-top:1px solid var(--c-line);background:var(--c-surface)}
.article-body tbody tr:nth-child(even) td{background:#FAF9F6}
.article-body code{
  font-family:var(--mono);font-size:14px;background:#F1F0EB;border:1px solid var(--c-line);
  border-radius:3px;padding:1px 6px;
}
.article-body pre{background:#F1F0EB;border:1px solid var(--c-line);border-radius:var(--r-card);padding:16px 18px;overflow-x:auto}
.article-body pre code{background:none;border:0;padding:0}
.article-body a{color:var(--c-brand-deep);border-bottom:1px solid rgba(14,159,134,.4)}
.article-body a:hover{color:var(--c-brand);border-bottom-color:var(--c-brand)}

.empty-state{
  max-width:760px;border:1px dashed var(--c-line);border-radius:var(--r-card);
  background:var(--c-surface);padding:48px 28px;text-align:center;
}
.empty-state h2{font-size:22px;font-weight:700;margin-bottom:10px}
.empty-state p{color:var(--c-muted);font-size:15px;margin-bottom:22px}

/* ---------- sidebar ---------- */
.article-side{display:none}
@media (min-width:1280px){
  .article-side{display:block;position:sticky;top:96px;align-self:start}
}
.side-card{
  border:1px solid var(--c-line);border-radius:var(--r-card);background:var(--c-surface);
  padding:20px;box-shadow:var(--sh-1);
}
.side-card + .side-card{margin-top:20px}
.side-title{font-size:13px;font-weight:700;letter-spacing:.12em;color:var(--c-muted);text-transform:uppercase}
.toc-list{margin-top:14px;border-left:2px solid var(--c-line)}
.toc-list a{display:block;padding:8px 0 8px 14px;font-size:14px;color:#4A535B;border-left:2px solid transparent;margin-left:-2px}
.toc-list a:hover,.toc-list a.is-current{color:var(--c-brand-deep);border-left-color:var(--c-brand);background:rgba(14,159,134,.05)}
.side-note{font-size:14px;color:var(--c-muted);margin-top:10px;line-height:1.75}
.form-field{margin-top:14px}
.form-field label{display:block;font-size:13px;color:#3B434B;margin-bottom:6px}
.form-field .req{color:var(--c-accent)}
.form-field input,.form-field textarea{
  width:100%;height:48px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:#fff;padding:0 14px;transition:border-color .2s ease,box-shadow .2s ease;
}
.form-field textarea{height:88px;padding:12px 14px;resize:vertical}
.form-field input:focus,.form-field textarea:focus{
  outline:none;border-color:var(--c-brand);box-shadow:0 0 0 3px rgba(14,159,134,.12);
}
.side-card .btn{width:100%;margin-top:16px;padding:12px 20px}
.privacy{font-size:12px;color:var(--c-muted);margin-top:10px;line-height:1.6}
.form-msg{font-size:13px;color:var(--c-brand-deep);margin-top:10px;display:none}
.form-msg.is-on{display:block}

/* ---------- footer blocks of article ---------- */
.article-footer{margin-top:56px;padding-top:32px;border-top:1px solid var(--c-line)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-pill);
  border:1px solid var(--c-line);background:var(--c-surface);font-size:13px;color:#4A535B;
  transition:border-color .2s ease,color .2s ease;
}
.tag:hover{border-color:rgba(14,159,134,.5);color:var(--c-brand-deep)}
.prevnext{display:grid;gap:16px;margin-top:32px}
@media (min-width:640px){.prevnext{grid-template-columns:1fr 1fr}}
.pn-card{
  border:1px solid var(--c-line);border-radius:var(--r-card);background:var(--c-surface);
  padding:18px 20px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.pn-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(14,159,134,.4)}
.pn-label{font-size:12px;letter-spacing:.14em;color:var(--c-muted);font-family:var(--mono)}
.pn-title{font-size:17px;font-weight:600;margin-top:8px}
.pn-desc{font-size:14px;color:var(--c-muted);margin-top:6px}
.back-link{margin-top:24px}

.rel-head{display:flex;align-items:flex-end;justify-content:space-between;margin-top:56px}
.rel-head h2{font-size:24px;font-weight:700}
.rel-grid{display:grid;gap:24px;margin-top:22px}
@media (min-width:640px){.rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.rel-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.rel-card{
  display:block;border:1px solid var(--c-line);border-radius:var(--r-card);background:var(--c-surface);
  overflow:hidden;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(14,159,134,.4)}
.rel-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-bottom:1px solid var(--c-line)}
.rel-body{padding:18px}
.rel-body h3{font-size:18px;font-weight:600;transition:color .2s ease}
.rel-card:hover h3{color:var(--c-brand-deep)}
.rel-body p{font-size:14px;color:var(--c-muted);margin-top:8px;line-height:1.7}
.rel-body .link-arrow{margin-top:14px}

/* ---------- CTA band ---------- */
.cta-band{background:var(--c-dark);color:var(--c-dark-text);margin-top:88px;position:relative;overflow:hidden}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:8px 8px;pointer-events:none;
}
.cta-inner{position:relative;z-index:1;display:grid;gap:32px;padding:72px 0;align-items:center}
@media (min-width:1024px){.cta-inner{grid-template-columns:1.15fr .85fr}}
.cta-band h2{font-size:32px;font-weight:700;line-height:1.25}
.cta-band p{color:#B7BFC6;font-size:16px;margin-top:16px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.scale-rule{
  height:22px;background-image:repeating-linear-gradient(to right,rgba(237,235,229,.5) 0 1px,transparent 1px 12px);
  background-position:bottom;background-size:12px 10px;background-repeat:repeat-x;opacity:.7;
}
.cta-box{
  border:1px solid rgba(237,235,229,.18);border-radius:var(--r-card);padding:24px;
  background:rgba(255,255,255,.03);
}
.cta-box .row{display:flex;align-items:baseline;justify-content:space-between;padding:10px 0;border-bottom:1px dashed rgba(237,235,229,.16)}
.cta-box .row:last-child{border-bottom:0}
.cta-box .k{color:#A9B2BA;font-size:14px}
.cta-box .v{font-family:var(--mono);font-weight:700;font-size:20px;color:var(--c-dark-link)}

/* ---------- footer ---------- */
.site-footer{background:var(--c-dark);color:#9AA3AC;padding-bottom:28px}
.footer-quote{
  border-top:1px solid rgba(237,235,229,.12);border-bottom:1px solid rgba(237,235,229,.12);
  padding:22px 0;font-size:14px;color:#C6CED5;
}
.footer-quote span{color:var(--c-dark-link);font-family:var(--mono);font-size:13px;margin-left:10px}
.footer-grid{display:grid;gap:36px;padding:48px 0 32px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr}}
.footer-brand{display:flex;align-items:center;gap:10px}
.footer-brand .brand-mark{background:#1B2126;border-color:#2C343A;color:#EDEBE5}
.footer-brand b{color:#EDEBE5;font-size:17px}
.footer-desc{font-size:14px;line-height:1.8;margin-top:16px;max-width:320px}
.footer-col h3{font-size:14px;color:#EDEBE5;font-weight:600;letter-spacing:.04em;margin-bottom:16px}
.footer-col a,.footer-col li{display:block;font-size:14px;line-height:2;transition:color .2s ease}
.footer-col a:hover{color:var(--c-dark-link)}
.footer-bottom{
  border-top:1px solid rgba(237,235,229,.12);padding-top:20px;
  display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;font-size:13px;
}
.footer-bottom a:hover{color:var(--c-dark-link)}

/* ---------- float bar & back to top ---------- */
.float-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;height:60px;
  background:var(--c-surface);border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 18px;
  transform:translateY(0);transition:transform .28s ease,opacity .28s ease;
}
.float-bar .float-text{font-size:14px;color:#3B434B}
.float-bar .btn{padding:10px 20px;font-size:14px}
.to-top{
  position:fixed;right:18px;bottom:76px;z-index:69;width:44px;height:44px;
  border:1px solid var(--c-line);border-radius:var(--r-btn);background:#fff;
  display:none;place-items:center;cursor:pointer;box-shadow:var(--sh-1);color:var(--c-ink);
  transition:transform .2s ease,border-color .2s ease,color .2s ease;
}
.to-top:hover{transform:translateY(-3px);border-color:var(--c-brand);color:var(--c-brand)}
.to-top.is-on{display:grid}
@media (min-width:1024px){
  .float-bar{
    left:auto;right:24px;bottom:24px;height:auto;border:1px solid var(--c-line);
    border-radius:var(--r-pill);padding:10px 12px 10px 22px;box-shadow:var(--sh-2);
    transform:translateY(140%);opacity:0;
  }
  .float-bar.is-visible{transform:translateY(0);opacity:1}
  .to-top{bottom:110px;right:24px}
}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .nav-tabs,.header-hours,.header-actions .btn-primary{display:none}
  .nav-toggle{display:grid;margin-left:auto}
  .article-title{font-size:30px}
  .cover-wrap{margin-top:24px}
  .article-layout{padding-top:32px}
}
@media (max-width:639px){
  .container{padding:0 18px}
  .cta-inner{padding:48px 0}
  .cta-band h2{font-size:26px}
  .rel-head{flex-direction:column;align-items:flex-start;gap:8px}
}

/* roulang page: category1 */
:root{
  --c-ink:#12161A;
  --c-brand:#0E9F86;
  --c-brand-deep:#0A7A67;
  --c-accent:#F0A227;
  --c-accent-deep:#D98C14;
  --c-bg:#F6F5F1;
  --c-surface:#FFFFFF;
  --c-line:#E4E2DB;
  --c-muted:#5C646D;
  --c-dark:#101418;
  --c-dark-text:#EDEBE5;
  --c-dark-link:#7FD8C6;
  --r-card:6px;
  --r-btn:4px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(18,22,26,.06);
  --sh-2:0 6px 18px rgba(18,22,26,.10);
  --maxw:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1{font-size:clamp(30px,4.2vw,46px);line-height:1.15;font-weight:700;letter-spacing:-.02em;}
h2{font-size:clamp(24px,3vw,32px);line-height:1.25;font-weight:700;letter-spacing:-.01em;}
h3{font-size:clamp(18px,2vw,21px);line-height:1.4;font-weight:600;}
:focus-visible{outline:2px solid var(--c-brand);outline-offset:2px;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.mono{font-variant-numeric:tabular-nums;font-family:"SFMono-Regular",Menlo,Consolas,"Courier New",monospace;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--c-line);
  transition:all .25s ease;
}
.header-inner{
  max-width:1280px;margin:0 auto;padding:0 24px;
  height:68px;display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.site-header.is-scrolled .header-inner{height:60px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;border-radius:4px;background:var(--c-ink);
  color:#7FD8C6;display:flex;align-items:center;justify-content:center;
  font-family:"SFMono-Regular",Menlo,Consolas,monospace;
  font-size:13px;font-weight:700;letter-spacing:.02em;
  border:1px solid #2A3138;
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--c-ink);}
.nav-tabs{
  display:flex;align-items:center;gap:4px;padding:4px;
  background:#EFEEE9;border:1px solid var(--c-line);border-radius:var(--r-pill);
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
  max-width:100%;
}
.nav-tabs::-webkit-scrollbar{display:none;}
.nav-chip{
  padding:8px 16px;border-radius:var(--r-pill);
  font-size:14px;font-weight:600;color:#3B4249;white-space:nowrap;
  transition:color .2s ease,background .2s ease,box-shadow .2s ease;
}
.nav-chip:hover{color:var(--c-brand-deep);}
.nav-chip.is-active{background:#fff;color:var(--c-brand);box-shadow:0 1px 2px rgba(18,22,26,.09);}
.hdr-actions{display:flex;align-items:center;gap:18px;flex-shrink:0;}
.hdr-phone{font-size:13px;color:var(--c-muted);display:flex;align-items:center;gap:6px;}
.hdr-phone .dot{width:6px;height:6px;border-radius:50%;background:var(--c-brand);display:inline-block;}
.nav-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  border:1px solid var(--c-line);border-radius:var(--r-btn);background:#fff;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-ink);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1.5px solid transparent;cursor:pointer;transition:all .2s ease;
  min-height:44px;line-height:1.2;
}
.btn-primary{background:var(--c-accent);color:var(--c-ink);border-color:var(--c-accent);}
.btn-primary:hover{background:var(--c-accent-deep);border-color:var(--c-accent-deep);transform:translateY(-2px);box-shadow:0 8px 20px rgba(240,162,39,.28);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:transparent;color:var(--c-ink);border-color:var(--c-ink);}
.btn-ghost:hover{background:rgba(14,159,134,.08);border-color:var(--c-brand);color:var(--c-brand-deep);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-block{width:100%;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--c-brand);font-size:14px;font-weight:600;
  border-bottom:1px solid rgba(14,159,134,.4);padding-bottom:2px;
  transition:all .2s ease;
}
.link-arrow::after{content:"→";transition:transform .2s ease;}
.link-arrow:hover{color:var(--c-brand-deep);border-bottom-color:var(--c-brand-deep);}
.link-arrow:hover::after{transform:translateX(4px);}

/* ============ 通用 ============ */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.14em;color:var(--c-brand);
  text-transform:uppercase;
}
.eyebrow::before{content:"";width:8px;height:2px;background:var(--c-accent);display:block;}
.section{padding:64px 0;}
.section-tight{padding:48px 0;}
.section-head{margin-bottom:32px;}
.section-head p{color:var(--c-muted);font-size:15px;margin-top:10px;max-width:640px;}
.ruler{
  height:10px;width:100%;
  background-image:repeating-linear-gradient(to right,#CFCCC2 0 1px,transparent 1px 12px);
  background-size:12px 10px;background-repeat:repeat-x;
  opacity:.7;
}

/* ============ 面包屑 ============ */
.crumbs{font-size:13px;color:var(--c-muted);display:flex;flex-wrap:wrap;gap:6px;align-items:center;}
.crumbs a{color:var(--c-muted);transition:color .2s ease;}
.crumbs a:hover{color:var(--c-brand);}
.crumbs .sep{color:#B9B6AC;}

/* ============ 分类 Hero ============ */
.page-hero{
  background:linear-gradient(180deg,#FFFFFF 0%,var(--c-bg) 100%);
  border-bottom:1px solid var(--c-line);
  padding:32px 0 56px;
  position:relative;overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(circle,#12161A 1px,transparent 1px);
  background-size:8px 8px;opacity:.05;
}
.hero-grid{
  display:grid;grid-template-columns:1fr 380px;gap:48px;align-items:center;
  margin-top:24px;position:relative;z-index:1;
}
.hero-title{margin-top:16px;}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.8;color:var(--c-muted);max-width:34ch;}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid rgba(14,159,134,.35);background:rgba(14,159,134,.06);
  color:var(--c-brand-deep);font-size:13px;font-weight:600;line-height:1.4;
}
.hero-thumb{
  position:relative;border:1px solid var(--c-ink);border-radius:var(--r-card);
  padding:8px;background:#fff;box-shadow:var(--sh-2);
}
.hero-thumb img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:4px;
  box-shadow:inset 0 0 24px rgba(18,22,26,.12);
}
.hero-thumb::before,.hero-thumb::after{
  content:"";position:absolute;width:14px;height:14px;border:1.5px solid var(--c-brand);
}
.hero-thumb::before{top:-1px;left:-1px;border-right:none;border-bottom:none;}
.hero-thumb::after{bottom:-1px;right:-1px;border-left:none;border-top:none;}

/* ============ 索引式布局 ============ */
.index-layout{display:grid;grid-template-columns:236px 1fr;gap:56px;align-items:start;}
.index-col{position:sticky;top:100px;}
.index-label{
  font-size:12px;font-weight:600;letter-spacing:.14em;color:var(--c-muted);
  padding-bottom:12px;border-bottom:1px solid var(--c-line);margin-bottom:14px;
}
.index-nav{display:flex;flex-direction:column;gap:2px;}
.index-link{
  display:flex;align-items:center;gap:10px;
  padding:10px 12px;font-size:14px;font-weight:600;color:#464D55;
  border-left:2px solid transparent;border-radius:0 4px 4px 0;
  transition:all .2s ease;
}
.index-link .idx{font-size:12px;color:#A8A59B;font-family:"SFMono-Regular",Menlo,Consolas,monospace;}
.index-link:hover{color:var(--c-brand-deep);background:rgba(14,159,134,.05);}
.index-link.is-active{
  color:var(--c-brand-deep);border-left:2px solid var(--c-brand);
  background:rgba(14,159,134,.08);
}
.index-link.is-active .idx{color:var(--c-brand);}
.index-help{
  margin-top:24px;padding:18px;border:1px solid var(--c-line);border-radius:var(--r-card);
  background:var(--c-surface);box-shadow:var(--sh-1);
}
.index-help p{font-size:13px;line-height:1.7;color:var(--c-muted);margin-bottom:12px;}

/* ============ 内容条目 ============ */
.content-block{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:36px;box-shadow:var(--sh-1);margin-bottom:28px;scroll-margin-top:96px;
}
.content-block:last-child{margin-bottom:0;}
.block-head{display:flex;align-items:baseline;gap:14px;margin-bottom:18px;}
.block-num{
  font-family:"SFMono-Regular",Menlo,Consolas,monospace;
  font-size:14px;font-weight:700;color:var(--c-accent);letter-spacing:.04em;
}
.content-block > p{color:#3B4249;font-size:16px;line-height:1.85;}
.content-block > p + p{margin-top:14px;}
.figure{margin:24px 0 0;}
.figure img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border:1px solid var(--c-line);border-radius:var(--r-card);
}
.figure figcaption{
  font-size:13px;color:var(--c-muted);text-align:center;margin-top:10px;
}
.steps{margin-top:22px;border-top:1px solid var(--c-line);}
.step{
  display:grid;grid-template-columns:44px 1fr;gap:16px;
  padding:18px 0;border-bottom:1px solid var(--c-line);
}
.step:last-child{border-bottom:none;padding-bottom:0;}
.step-num{
  font-family:"SFMono-Regular",Menlo,Consolas,monospace;
  font-size:20px;font-weight:700;color:var(--c-brand);line-height:1.3;
}
.step h3{font-size:17px;margin-bottom:4px;}
.step p{font-size:14px;color:var(--c-muted);line-height:1.7;}
.check-list{margin-top:20px;display:grid;gap:10px;}
.check-list li{
  position:relative;padding-left:24px;font-size:15px;line-height:1.75;color:#3B4249;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;width:10px;height:10px;
  border:2px solid var(--c-brand);border-radius:2px;
}
.tag-grid{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.tag-grid span{
  padding:8px 16px;border:1px solid var(--c-line);border-radius:var(--r-pill);
  background:#FAF9F6;font-size:14px;font-weight:600;color:#3B4249;
  transition:all .2s ease;
}
.tag-grid span:hover{border-color:rgba(14,159,134,.5);color:var(--c-brand-deep);}

/* ============ 数据带 ============ */
.data-band{
  background:var(--c-dark);color:var(--c-dark-text);border-radius:var(--r-card);
  padding:40px 36px;margin-top:28px;
}
.data-band h2{font-size:22px;margin-bottom:24px;color:#fff;}
.data-row{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.data-item .num{
  font-family:"SFMono-Regular",Menlo,Consolas,monospace;
  font-size:clamp(32px,4vw,48px);font-weight:700;color:var(--c-dark-link);
  line-height:1.1;display:block;
}
.data-item .lbl{font-size:14px;color:#9AA3AC;margin-top:8px;display:block;}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--c-line);margin-top:20px;}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 0;background:none;border:none;cursor:pointer;text-align:left;
  font-size:17px;font-weight:600;color:var(--c-ink);transition:color .2s ease;
  min-height:44px;
}
.faq-q:hover{color:var(--c-brand-deep);}
.faq-icon{
  width:28px;height:28px;flex-shrink:0;border-radius:4px;
  border:1px solid var(--c-line);background:#FAF9F6;color:#464D55;
  display:flex;align-items:center;justify-content:center;font-size:16px;line-height:1;
  transition:all .2s ease;
}
.faq-item.is-open .faq-icon{background:var(--c-brand);border-color:var(--c-brand);color:#fff;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-item.is-open .faq-a{max-height:360px;}
.faq-a p{padding:0 56px 22px 0;font-size:15px;line-height:1.85;color:var(--c-muted);}

/* ============ 表单 CTA ============ */
.cta-section{
  background:var(--c-surface);border-top:1px solid var(--c-line);
  border-bottom:1px solid var(--c-line);padding:72px 0;
}
.cta-grid{display:grid;grid-template-columns:1fr 460px;gap:56px;align-items:start;}
.cta-copy h2{margin-bottom:16px;}
.cta-copy p{color:var(--c-muted);font-size:16px;line-height:1.85;max-width:52ch;}
.cta-points{margin-top:24px;display:grid;gap:12px;}
.cta-points li{display:flex;gap:10px;font-size:15px;color:#3B4249;}
.cta-points li::before{content:"—";color:var(--c-accent);font-weight:700;}
.form-card{
  border:1px solid var(--c-line);border-radius:var(--r-card);
  background:#FAF9F6;padding:28px;box-shadow:var(--sh-1);
}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;font-weight:600;color:#464D55;margin-bottom:6px;}
.field .req{color:var(--c-accent);margin-left:2px;}
.field input,.field textarea{
  width:100%;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-btn);
  padding:12px 14px;font-size:15px;transition:border-color .2s ease,box-shadow .2s ease;
}
.field input{height:48px;}
.field textarea{min-height:96px;resize:vertical;line-height:1.7;}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--c-brand);box-shadow:0 0 0 3px rgba(14,159,134,.12);
}
.field input::placeholder,.field textarea::placeholder{color:#A8A59B;}
.privacy{font-size:12px;color:var(--c-muted);margin-top:12px;line-height:1.7;}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-dark);color:var(--c-dark-text);padding-top:0;}
.footer-inner{padding:56px 0 24px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .brand-mark{background:#1A2027;border-color:#2A3138;}
.footer-brand .brand-text{color:#fff;}
.footer-desc{font-size:14px;color:#9AA3AC;line-height:1.8;margin-top:16px;max-width:34ch;}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.04em;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a,.footer-col span{font-size:14px;color:#9AA3AC;transition:color .2s ease;}
.footer-col a:hover{color:var(--c-dark-link);}
.footer-bottom{
  border-top:1px solid #222A31;margin-top:40px;padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:#7C858E;
}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:16px;}
.footer-bottom .links a:hover{color:var(--c-dark-link);}

/* ============ 底部转化条 ============ */
.convert-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:10px 18px;background:#fff;border-top:1px solid var(--c-line);
  box-shadow:0 -4px 16px rgba(18,22,26,.07);
  transform:translateY(0);transition:transform .3s ease;
}
.cb-text{font-size:14px;font-weight:600;color:var(--c-ink);}
@media (min-width:1024px){
  .convert-bar{
    left:auto;right:24px;bottom:24px;border:1px solid var(--c-line);
    border-radius:var(--r-pill);padding:8px 10px 8px 22px;
    transform:translateY(160%);box-shadow:var(--sh-2);
  }
  .convert-bar.is-visible{transform:translateY(0);}
}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  body{padding-bottom:62px;}
  .nav-toggle{display:flex;}
  .nav-tabs{
    position:absolute;top:100%;left:0;right:0;display:none;
    flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;border:1px solid var(--c-line);border-top:none;
    border-radius:0;padding:12px;box-shadow:var(--sh-2);
  }
  .nav-tabs.is-open{display:flex;}
  .nav-chip{text-align:center;padding:12px 16px;}
  .hdr-actions .hdr-phone{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:28px;}
  .hero-sub{max-width:none;}
  .hero-thumb{max-width:520px;}
  .index-layout{grid-template-columns:1fr;gap:32px;}
  .index-col{position:static;}
  .index-nav{flex-direction:row;overflow-x:auto;gap:8px;padding-bottom:6px;scrollbar-width:none;}
  .index-nav::-webkit-scrollbar{display:none;}
  .index-link{border-left:none;border-bottom:2px solid transparent;border-radius:4px 4px 0 0;white-space:nowrap;}
  .index-link.is-active{border-left:none;border-bottom:2px solid var(--c-brand);}
  .index-help{display:none;}
  .cta-grid{grid-template-columns:1fr;gap:36px;}
  .data-row{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:639px){
  .container{padding:0 18px;}
  .header-inner{padding:0 18px;gap:16px;}
  .section{padding:44px 0;}
  .content-block{padding:22px;}
  .step{grid-template-columns:34px 1fr;gap:12px;}
  .faq-a p{padding-right:0;}
  .cta-section{padding:48px 0;}
  .footer-grid{grid-template-columns:1fr;}
  .hero-thumb{padding:6px;}
  .cb-text{font-size:13px;}
}

/* roulang page: category2 */
:root{
  --c-ink:#12161A;
  --c-brand:#0E9F86;
  --c-brand-deep:#0A7A67;
  --c-accent:#F0A227;
  --c-bg:#F6F5F1;
  --c-surface:#FFFFFF;
  --c-line:#E4E2DB;
  --c-muted:#5C646D;
  --c-dark:#101418;
  --c-dark-text:#EDEBE5;
  --c-dark-link:#7FD8C6;
  --r-card:6px;
  --r-img:6px;
  --r-btn:4px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(18,22,26,.06);
  --sh-2:0 6px 18px rgba(18,22,26,.10);
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink);
  background:var(--c-bg);
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-0.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;}

/* 容器 */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media (min-width:1536px){.container{max-width:1280px;}}
@media (max-width:640px){.container{padding:0 18px;}}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-btn);font-weight:600;font-size:15px;
  line-height:1;border:1px solid transparent;cursor:pointer;min-height:44px;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--c-accent);color:#12161A;}
.btn-primary:hover{background:#D98C14;transform:translateY(-2px);box-shadow:0 8px 20px rgba(240,162,39,.28);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-outline{background:transparent;border:1.5px solid var(--c-ink);color:var(--c-ink);}
.btn-outline:hover{background:rgba(14,159,134,.08);border-color:var(--c-brand);color:var(--c-brand-deep);}
.btn-ghost{background:#fff;border:1px solid var(--c-line);color:var(--c-ink);}
.btn-ghost:hover{border-color:var(--c-brand);color:var(--c-brand);}
.btn-sm{padding:10px 18px;font-size:14px;min-height:38px;}
.btn:disabled{opacity:.45;cursor:not-allowed;}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--c-brand);outline-offset:2px;
}

/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
  border-bottom:1px solid var(--c-line);
}
.header-inner{display:flex;align-items:center;gap:24px;height:68px;transition:height .2s ease;}
.site-header.is-scrolled .header-inner{height:60px;}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand-mark{
  width:34px;height:34px;border-radius:4px;background:var(--c-ink);color:var(--c-dark-link);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-size:14px;font-weight:700;letter-spacing:.02em;
  border:1px solid #2A3138;flex:none;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{font-size:15px;font-weight:700;letter-spacing:.02em;}
.brand-sub{font-size:11px;color:var(--c-muted);letter-spacing:.12em;font-family:var(--font-mono);}
.nav-tabs{
  flex:1;display:flex;align-items:center;justify-content:center;gap:4px;
  padding:4px;border:1px solid var(--c-line);border-radius:var(--r-pill);
  background:#EFEEE9;overflow-x:auto;
  scrollbar-width:none;-ms-overflow-style:none;
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 14px,#000 calc(100% - 14px),transparent 100%);
  mask-image:linear-gradient(90deg,transparent 0,#000 14px,#000 calc(100% - 14px),transparent 100%);
}
.nav-tabs::-webkit-scrollbar{display:none;}
.nav-chip{
  flex:none;padding:7px 16px;border-radius:var(--r-pill);
  font-size:14px;color:var(--c-muted);white-space:nowrap;
  transition:background-color .18s ease,color .18s ease,box-shadow .18s ease;
}
.nav-chip:hover{color:var(--c-brand-deep);background:rgba(255,255,255,.7);}
.nav-chip.is-active{background:#fff;color:var(--c-brand);font-weight:600;box-shadow:0 1px 2px rgba(18,22,26,.08);}
.header-actions{display:flex;align-items:center;gap:32px;flex:none;}
.header-hotline{font-family:var(--font-mono);font-size:14px;color:var(--c-muted);}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--c-line);background:#fff;
  border-radius:var(--r-btn);align-items:center;justify-content:center;cursor:pointer;flex:none;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-ink);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.mobile-panel{
  display:none;position:absolute;top:100%;left:0;right:0;
  background:#fff;border-bottom:1px solid var(--c-line);
  padding:16px 18px 20px;max-height:80vh;overflow-y:auto;
  box-shadow:0 12px 28px rgba(18,22,26,.10);
}
.mobile-panel.is-open{display:block;}
.mobile-panel .nav-chip{
  display:block;padding:12px 16px;border-radius:var(--r-btn);
  border:1px solid var(--c-line);margin-bottom:8px;background:#fff;
}
.mobile-panel .nav-chip.is-active{border-color:var(--c-brand);color:var(--c-brand);background:rgba(14,159,134,.07);}
.mobile-panel .btn{width:100%;margin-top:10px;}

@media (max-width:1023px){
  .nav-tabs{display:none;}
  .header-hotline{display:none;}
  .header-actions .btn{display:none;}
  .nav-toggle{display:flex;}
}

/* 通用板块 */
.section{padding:80px 0;}
.section-sm{padding:64px 0;}
@media (max-width:1023px){
  .section{padding:56px 0;}
  .section-sm{padding:48px 0;}
}
@media (max-width:640px){
  .section{padding:48px 0;}
  .section-sm{padding:40px 0;}
}
.section-head{margin-bottom:40px;}
.section-head h2{font-size:32px;line-height:1.25;}
.section-head p{color:var(--c-muted);font-size:15px;margin-top:12px;max-width:680px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;font-weight:600;color:var(--c-brand);
  text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:8px;height:2px;background:var(--c-accent);display:block;}

/* 分类 Hero 窄条 */
.cat-hero{
  position:relative;background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  padding:22px 0 26px;
  background-image:radial-gradient(rgba(18,22,26,.055) 1px,transparent 1px);
  background-size:8px 8px;
}
.cat-hero::after{
  content:"";position:absolute;left:0;bottom:0;width:110px;height:2px;background:var(--c-brand);
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);}
.breadcrumb a{transition:color .18s ease;}
.breadcrumb a:hover{color:var(--c-brand);}
.breadcrumb .sep{color:#C9C6BC;}
.cat-hero-row{
  display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-top:16px;
}
.cat-hero h1{font-size:42px;line-height:1.15;letter-spacing:-0.02em;}
.hero-sub{margin-top:12px;font-size:16px;color:var(--c-muted);max-width:640px;}
.hero-actions{flex:none;padding-bottom:4px;}
@media (max-width:900px){
  .cat-hero-row{flex-direction:column;align-items:flex-start;gap:20px;}
  .cat-hero h1{font-size:32px;}
  .hero-actions{width:100%;}
  .hero-actions .btn{width:100%;}
}
@media (max-width:640px){
  .cat-hero h1{font-size:30px;}
}

/* 过滤条 */
.filter-bar{
  display:flex;gap:8px;overflow-x:auto;padding:4px 0 22px;
  scrollbar-width:none;-ms-overflow-style:none;
}
.filter-bar::-webkit-scrollbar{display:none;}
.filter-chip{
  flex:none;padding:9px 18px;border-radius:var(--r-pill);
  border:1px solid var(--c-line);background:#fff;color:var(--c-muted);
  font-size:14px;white-space:nowrap;cursor:pointer;
  transition:border-color .18s ease,color .18s ease,background-color .18s ease;
}
.filter-chip:hover{border-color:rgba(14,159,134,.55);color:var(--c-brand);}
.filter-chip.is-active{background:var(--c-ink);border-color:var(--c-ink);color:#fff;}

/* 支持卡片网格 */
.support-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.support-card{
  display:grid;grid-template-columns:42% 1fr;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.support-card:hover{transform:translateY(-3px);border-color:rgba(14,159,134,.4);box-shadow:var(--sh-2);}
.support-card:hover .card-title{color:var(--c-brand);}
.card-media{position:relative;border-right:1px solid var(--c-line);overflow:hidden;background:#EFEEE9;}
.card-media img{width:100%;height:100%;aspect-ratio:16/10;object-fit:cover;}
.card-body{padding:20px 22px;display:flex;flex-direction:column;gap:10px;}
.card-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;}
.tag{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;
  border-radius:var(--r-pill);font-size:12px;line-height:1;
  color:var(--c-brand);background:rgba(14,159,134,.08);
  border:1px solid rgba(14,159,134,.45);
}
.card-time{font-family:var(--font-mono);font-size:12px;color:var(--c-muted);}
.card-title{font-size:20px;line-height:1.4;font-weight:600;transition:color .18s ease;}
.card-desc{
  font-size:14px;color:var(--c-muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.link-arrow{
  margin-top:auto;display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--c-brand);
  border-bottom:1px solid rgba(14,159,134,.35);padding-bottom:2px;
  align-self:flex-start;transition:color .18s ease,border-color .18s ease;
}
.link-arrow i{font-style:normal;transition:transform .18s ease;}
.link-arrow:hover{color:var(--c-brand-deep);border-color:var(--c-brand-deep);}
.link-arrow:hover i{transform:translateX(4px);}
@media (max-width:1023px){
  .support-grid{grid-template-columns:1fr;}
}
@media (max-width:640px){
  .support-card{grid-template-columns:1fr;}
  .card-media{border-right:none;border-bottom:1px solid var(--c-line);}
}

/* 深色流程区 */
.dark-section{
  background:var(--c-dark);color:var(--c-dark-text);
  position:relative;overflow:hidden;
}
.dark-section::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(237,235,229,.10) 1px,transparent 1px);
  background-size:14px 14px;opacity:.35;pointer-events:none;
}
.dark-section .container{position:relative;z-index:1;}
.dark-section h2{color:#fff;}
.dark-section .section-head p{color:rgba(237,235,229,.72);}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.step{border-top:1px solid rgba(237,235,229,.22);padding-top:20px;transition:border-color .22s ease;}
.step:hover{border-color:var(--c-brand);}
.step-num{font-family:var(--font-mono);font-size:26px;font-weight:700;color:var(--c-accent);line-height:1;}
.step h3{font-size:18px;line-height:1.4;margin:12px 0 8px;color:#fff;}
.step p{font-size:14px;line-height:1.75;color:rgba(237,235,229,.72);}
@media (max-width:900px){.steps{grid-template-columns:repeat(2,1fr);}}
@media (max-width:560px){.steps{grid-template-columns:1fr;}}

/* 数据带 */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;margin-bottom:64px;
}
.stat{padding:28px 24px;border-right:1px solid var(--c-line);}
.stat:last-child{border-right:none;}
.stat-num{
  font-family:var(--font-mono);font-size:54px;line-height:1;font-weight:700;
  color:var(--c-ink);letter-spacing:-0.02em;
}
.stat-num span{font-size:20px;color:var(--c-brand);margin-left:4px;}
.stat-label{margin-top:12px;font-size:14px;color:var(--c-muted);}
@media (max-width:900px){
  .stats{grid-template-columns:repeat(2,1fr);margin-bottom:48px;}
  .stat{border-bottom:1px solid var(--c-line);}
  .stat:nth-child(2n){border-right:none;}
  .stat:nth-child(n+3){border-bottom:none;}
  .stat-num{font-size:40px;}
}
@media (max-width:520px){
  .stats{grid-template-columns:1fr;}
  .stat{border-right:none;border-bottom:1px solid var(--c-line) !important;}
  .stat:last-child{border-bottom:none !important;}
}

/* 图文分栏 */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
@media (max-width:900px){.split{grid-template-columns:1fr;gap:32px;}}
.figure{
  position:relative;border:1px solid var(--c-line);border-radius:var(--r-img);
  overflow:hidden;background:#fff;box-shadow:var(--sh-1);
}
.figure img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.figure::before,.figure::after{
  content:"";position:absolute;width:12px;height:12px;border:1px solid rgba(255,255,255,.85);
  pointer-events:none;
}
.figure::before{top:10px;left:10px;border-right:none;border-bottom:none;}
.figure::after{bottom:10px;right:10px;border-left:none;border-top:none;}
.figure-cap{font-size:13px;color:var(--c-muted);margin-top:10px;text-align:center;}
.check-list{display:grid;gap:14px;margin-top:26px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15px;line-height:1.7;color:var(--c-ink);
  padding-bottom:14px;border-bottom:1px solid var(--c-line);
}
.check-list li:last-child{border-bottom:none;padding-bottom:0;}
.check-list li::before{
  content:"";flex:none;width:8px;height:8px;margin-top:8px;
  background:var(--c-brand);border-radius:1px;
}
.check-list li em{font-style:normal;color:var(--c-muted);font-size:14px;}

/* FAQ */
.faq{border-top:1px solid var(--c-line);}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:none;border:none;padding:22px 4px;text-align:left;
  font-size:17px;font-weight:600;cursor:pointer;transition:color .18s ease;
}
.faq-q:hover{color:var(--c-brand);}
.faq-icon{
  flex:none;width:24px;height:24px;border-radius:4px;
  border:1px solid var(--c-line);background:#fff;color:var(--c-muted);
  display:flex;align-items:center;justify-content:center;
  font-size:15px;line-height:1;transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.faq-item.is-open .faq-icon{background:var(--c-brand);border-color:var(--c-brand);color:#fff;}
.faq-item.is-open .faq-q{color:var(--c-brand-deep);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a p{padding:0 4px 22px;font-size:15px;line-height:1.8;color:var(--c-muted);}

/* CTA + 表单 */
.cta-wrap{display:grid;grid-template-columns:1fr 1.05fr;gap:56px;align-items:start;}
@media (max-width:1023px){.cta-wrap{grid-template-columns:1fr;gap:32px;}}
.cta-points{display:grid;gap:12px;margin-top:26px;}
.cta-points li{display:flex;gap:10px;font-size:15px;color:var(--c-ink);}
.cta-points li::before{
  content:"";flex:none;width:6px;height:6px;margin-top:9px;background:var(--c-accent);
}
.form-card{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:32px;box-shadow:var(--sh-1);
}
@media (max-width:640px){.form-card{padding:22px 18px;}}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 18px;}
@media (max-width:640px){.form-grid{grid-template-columns:1fr;}}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;font-weight:600;margin-bottom:8px;}
.req{color:var(--c-accent);margin-left:2px;}
.field input,.field textarea{
  width:100%;border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:#fff;padding:0 14px;height:48px;font-size:15px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{height:auto;min-height:112px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input:focus,.field textarea:focus{
  border-color:var(--c-brand);box-shadow:0 0 0 3px rgba(14,159,134,.12);outline:none;
}
.field input::placeholder,.field textarea::placeholder{color:#A8AEB4;}
.form-note{font-size:12px;color:var(--c-muted);margin-top:12px;line-height:1.7;}
.form-msg{font-size:13px;color:var(--c-brand-deep);margin-top:12px;display:none;}
.form-msg.is-ok{display:block;}

/* 页脚 */
.site-footer{background:var(--c-dark);color:#9AA3AC;padding-bottom:32px;margin-top:0;}
.footer-ruler{
  height:14px;border-bottom:1px solid rgba(237,235,229,.08);
  background-image:repeating-linear-gradient(90deg,rgba(237,235,229,.28) 0 1px,transparent 1px 12px);
}
.footer-top{
  display:grid;grid-template-columns:2fr 1fr 1fr 1.3fr;gap:40px;
  padding:56px 0 40px;
}
.footer-top h4{font-size:14px;color:var(--c-dark-text);margin-bottom:18px;letter-spacing:.04em;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:#1B2228;border-color:#2A3138;}
.footer-brand .brand-name{color:var(--c-dark-text);}
.footer-desc{font-size:14px;line-height:1.8;color:#9AA3AC;max-width:340px;}
.footer-links{display:grid;gap:10px;}
.footer-links a{font-size:14px;color:#9AA3AC;transition:color .18s ease;}
.footer-links a:hover{color:var(--c-dark-link);}
.footer-contact{display:grid;gap:10px;font-size:14px;line-height:1.7;}
.footer-contact .mono{color:#C4CBD2;}
.footer-bottom{
  border-top:1px solid rgba(237,235,229,.10);
  padding-top:22px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:#7E878F;
}
.footer-bottom a{color:#9AA3AC;transition:color .18s ease;}
.footer-bottom a:hover{color:var(--c-dark-link);}
.footer-bottom .inner-links{display:flex;gap:18px;flex-wrap:wrap;}
@media (max-width:1023px){
  .footer-top{grid-template-columns:1fr 1fr;gap:32px;padding:44px 0 32px;}
  .site-footer{padding-bottom:88px;}
}
@media (max-width:640px){
  .footer-top{grid-template-columns:1fr;}
}

/* 底部固定转化条 */
.convert-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:10px 18px;background:#fff;border-top:1px solid var(--c-line);
  box-shadow:0 -2px 10px rgba(18,22,26,.06);
  transform:translateY(120%);transition:transform .28s ease;
}
.convert-bar.is-visible{transform:translateY(0);}
.convert-text{font-size:13px;color:var(--c-muted);}
@media (min-width:1024px){
  .convert-bar{
    left:auto;right:28px;bottom:28px;border-radius:var(--r-pill);
    border:1px solid var(--c-line);padding:8px 10px 8px 22px;
    box-shadow:var(--sh-2);transform:translateY(160%);
  }
  .convert-bar .btn{padding:10px 20px;font-size:14px;min-height:40px;}
  .convert-text{font-size:13px;}
}