/* roulang page: index */
:root{
  --canvas:#F7F5F1;
  --canvas-2:#FFFFFF;
  --ink-900:#101114;
  --ink-700:#2A2C31;
  --ink-500:#5C6068;
  --ink-300:#9AA0A8;
  --line:#E3DFD8;
  --brand-500:#FF5A36;
  --brand-600:#E8451F;
  --brand-100:#FFE9E1;
  --accent-700:#2E4A52;
  --accent-100:#E4EDEE;
  --ok:#3F8F5B;
  --r-sm:8px;--r-md:14px;--r-lg:20px;--r-xl:28px;--r-pill:999px;
  --shadow-1:0 1px 2px rgba(16,17,20,.04),0 8px 24px -12px rgba(16,17,20,.10);
  --shadow-2:0 24px 60px -32px rgba(16,17,20,.28);
  --ease:cubic-bezier(.22,.7,.24,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--canvas);color:var(--ink-700);
  font-family:"Noto Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.8;letter-spacing:-0.01em;
}
img{max-width:100%;display:block;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{margin:0;color:var(--ink-900);letter-spacing:-0.02em}
p{margin:0}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:104px 0}
.section-head{max-width:760px;margin-bottom:56px}
.section-head h2{font-size:clamp(1.75rem,2.6vw,2.5rem);font-weight:700;line-height:1.2;margin-bottom:16px}
.section-head p{color:var(--ink-500);font-size:1.0625rem}
.section-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;max-width:none}
.section-head--row>div{max-width:680px}
.eyebrow{display:flex;align-items:center;gap:10px;font-size:.75rem;letter-spacing:.08em;color:var(--brand-600);font-weight:600;margin-bottom:18px;text-transform:none}
.eyebrow-line{width:24px;height:2px;background:var(--brand-500);display:inline-block;flex:0 0 auto}

/* ============ 浮动 Dock 导航 ============ */
.dock-wrap{position:sticky;top:16px;z-index:120;padding:0 14px}
.dock{
  width:min(1120px,92vw);margin:0 auto;display:flex;align-items:center;gap:16px;
  padding:10px 12px 10px 18px;background:rgba(255,255,255,.82);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:var(--r-pill);box-shadow:var(--shadow-1);
  transition:padding .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.dock-wrap.is-scrolled .dock{padding:6px 10px 6px 16px;box-shadow:var(--shadow-2);border-color:#D6D1C8}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:50%;display:grid;place-items:center;flex:0 0 auto;
  background:var(--ink-900);color:#fff;font-weight:700;font-size:15px;line-height:1;
}
.brand-text{display:flex;flex-direction:column;line-height:1.18}
.brand-name{font-weight:800;font-size:1rem;color:var(--ink-900);white-space:nowrap}
.brand-sub{font-size:.6875rem;color:var(--ink-500);letter-spacing:.03em;white-space:nowrap}
.dock-nav{display:flex;align-items:center;gap:2px;margin-left:6px}
.dock-nav a{
  position:relative;padding:8px 12px;border-radius:var(--r-pill);font-size:.9375rem;color:var(--ink-500);
  transition:color .16s var(--ease),background .16s var(--ease);white-space:nowrap;
}
.dock-nav a:hover{color:var(--ink-900);background:rgba(16,17,20,.05)}
.dock-nav a.is-active{color:var(--ink-900);font-weight:700}
.dock-nav a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--brand-500);border-radius:2px;
}
.dock-actions{margin-left:auto;display:flex;align-items:center;gap:8px;flex:0 0 auto}
.icon-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:#fff;
  display:grid;place-items:center;cursor:pointer;color:var(--ink-700);
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.icon-btn:hover{border-color:var(--ink-900);color:var(--ink-900)}
.dock-search{width:0;opacity:0;overflow:hidden;transition:width .28s var(--ease),opacity .28s var(--ease)}
.dock-search.is-open{width:240px;opacity:1}
.dock-search input{
  width:100%;height:40px;border-radius:12px;border:1px solid var(--line);
  padding:0 14px;background:#fff;font-size:.9375rem;
}
.dock-search input:focus{outline:none;border-color:var(--brand-500)}
.menu-btn{display:none;width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:#fff;place-items:center;cursor:pointer}
.mobile-drawer{
  display:none;width:min(1120px,92vw);margin:10px auto 0;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-2);padding:12px;
}
.mobile-drawer.is-open{display:block}
.mobile-drawer a{display:block;padding:12px 14px;border-radius:var(--r-md);font-size:1rem;color:var(--ink-700)}
.mobile-drawer a:hover,.mobile-drawer a.is-active{background:var(--brand-100);color:var(--brand-600);font-weight:600}
.mobile-drawer .drawer-cta{margin-top:8px;background:var(--brand-500);color:#fff;text-align:center;font-weight:600}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;
  border-radius:var(--r-pill);border:1.5px solid transparent;font-weight:600;font-size:.9375rem;
  cursor:pointer;transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .16s var(--ease),box-shadow .2s var(--ease);
}
.btn svg{transition:transform .2s var(--ease)}
.btn:hover svg{transform:translateX(4px)}
.btn-primary{background:var(--brand-500);color:#fff;box-shadow:0 12px 26px -16px rgba(255,90,54,.95)}
.btn-primary:hover{background:var(--brand-600)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:var(--ink-900);color:var(--ink-900)}
.btn-ghost:hover{background:var(--ink-900);color:#fff}
.btn-ghost:active{transform:translateY(1px)}
.btn-light{background:#fff;color:var(--ink-900)}
.btn-light:hover{background:var(--brand-100);color:var(--brand-600)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.35);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.6)}
.btn-sm{height:40px;padding:0 18px;font-size:.875rem}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand-600);font-weight:600;font-size:.9375rem;
}
.link-arrow svg{transition:transform .2s var(--ease)}
.link-arrow:hover svg{transform:translateX(4px)}

/* ============ Hero ============ */
.hero{position:relative;padding:72px 0 88px;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(to right,var(--line) 1px,transparent 1px),linear-gradient(to bottom,var(--line) 1px,transparent 1px);
  background-size:72px 72px;opacity:.55;
  -webkit-mask-image:radial-gradient(ellipse at 28% 18%,#000 0%,transparent 72%);
  mask-image:radial-gradient(ellipse at 28% 18%,#000 0%,transparent 72%);
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.hero-title{font-size:clamp(2.5rem,4.8vw,4.4rem);font-weight:800;line-height:1.06;letter-spacing:-0.02em;margin-bottom:22px}
.hero-lead{font-size:1.125rem;line-height:1.85;color:var(--ink-500);max-width:620px;margin-bottom:32px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:20px}
.hero-note{font-size:.875rem;color:var(--ink-300)}
.hero-visual{position:relative;border-radius:var(--r-xl);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-2)}
.hero-visual img{width:100%;aspect-ratio:16/11;object-fit:cover}
.hero-badge{
  position:absolute;left:18px;bottom:18px;background:#fff;border-radius:var(--r-pill);
  padding:9px 16px;font-size:.8125rem;font-weight:600;color:var(--ink-900);box-shadow:var(--shadow-1);
}

/* ============ 指标条 ============ */
.metrics{background:var(--canvas-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.metrics-inner{display:grid;grid-template-columns:repeat(3,1fr)}
.metric{padding:38px 30px}
.metric + .metric{border-left:1px solid var(--line)}
.metric-num{
  display:block;font-size:clamp(2.75rem,5vw,4.25rem);font-weight:700;line-height:1;color:var(--ink-900);
  font-variant-numeric:tabular-nums;letter-spacing:-0.03em;margin-bottom:10px;
}
.metric-label{font-size:.9375rem;color:var(--ink-500)}

/* ============ 编号痛点列表 ============ */
.pain-list{border-top:1px solid var(--line)}
.pain-item{
  display:grid;grid-template-columns:110px 1fr;gap:32px;padding:36px 22px;border-bottom:1px solid var(--line);
  align-items:start;transition:background .24s var(--ease);
}
.pain-item:hover{background:rgba(255,255,255,.7)}
.pain-num{
  font-size:2.75rem;font-weight:700;color:var(--ink-300);line-height:1;letter-spacing:-0.03em;
  font-variant-numeric:tabular-nums;transition:color .24s var(--ease);
}
.pain-item:hover .pain-num{color:var(--brand-500)}
.pain-item h3{font-size:1.375rem;font-weight:600;margin-bottom:10px}
.pain-item p{color:var(--ink-500);max-width:760px}

/* ============ 图文交错 ============ */
.split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.split + .split{margin-top:96px}
.split-media{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-1);background:#fff}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.split-reverse .split-text{order:2}
.split-reverse .split-media{order:1}
.split-text h3{font-size:1.5rem;font-weight:600;line-height:1.35;margin-bottom:18px}
.split-text>p{color:var(--ink-500);margin-bottom:22px}
.point-list li{display:flex;gap:12px;padding:13px 0;border-bottom:1px dashed var(--line);color:var(--ink-500);font-size:.9688rem}
.point-list li:last-child{border-bottom:0}
.point-list svg{flex:0 0 auto;margin-top:7px;color:var(--brand-500)}
.tag-pill{
  display:inline-flex;align-items:center;padding:5px 12px;border-radius:var(--r-pill);
  background:var(--accent-100);color:var(--accent-700);font-size:.75rem;font-weight:600;letter-spacing:.03em;
}
.banner{
  position:relative;margin-top:96px;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  min-height:340px;display:flex;align-items:flex-end;
}
.banner img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.banner::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(16,17,20,.22),rgba(16,17,20,.72))}
.banner-content{position:relative;z-index:2;padding:46px;color:#fff;max-width:720px}
.banner-content .tag-pill{background:rgba(255,255,255,.16);color:#fff;margin-bottom:16px}
.banner-content h3{color:#fff;font-size:clamp(1.375rem,2.2vw,1.875rem);font-weight:700;line-height:1.3;margin-bottom:12px}
.banner-content p{color:rgba(255,255,255,.78)}

/* ============ 深色数据区 ============ */
.dark{background:var(--ink-900);color:#fff}
.dark h2,.dark h3{color:#fff}
.dark .section-head p{color:rgba(255,255,255,.66)}
.dark .eyebrow{color:var(--brand-500)}
.results-grid{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid rgba(255,255,255,.12);border-bottom:1px solid rgba(255,255,255,.12)}
.result{padding:40px 28px}
.result + .result{border-left:1px solid rgba(255,255,255,.12)}
.result-num{font-size:clamp(2.5rem,4.6vw,4rem);font-weight:700;line-height:1;color:var(--brand-500);font-variant-numeric:tabular-nums;letter-spacing:-0.03em;margin-bottom:12px}
.result h3{font-size:1.0625rem;font-weight:600;margin-bottom:8px}
.result p{color:rgba(255,255,255,.6);font-size:.9375rem}

/* ============ 最新信息 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;background:var(--canvas-2);border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;height:100%;
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--brand-500)}
.news-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.badge{
  display:inline-flex;align-items:center;align-self:flex-start;padding:4px 10px;border-radius:var(--r-pill);
  background:var(--brand-100);color:var(--brand-600);font-size:.75rem;font-weight:600;letter-spacing:.02em;
}
.news-body h3{font-size:1.0625rem;font-weight:600;line-height:1.5;transition:color .2s var(--ease)}
.news-card:hover .news-body h3{color:var(--brand-600)}
.news-body p{color:var(--ink-500);font-size:.9375rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:.8125rem;color:var(--ink-300);padding-top:6px}
.news-arrow{color:var(--brand-500);font-weight:700;transition:transform .2s var(--ease)}
.news-card:hover .news-arrow{transform:translateX(4px)}
.empty-state{
  grid-column:1/-1;background:rgba(255,90,54,.06);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:52px 28px;text-align:center;
}
.empty-state svg{margin:0 auto 18px;color:var(--brand-500)}
.empty-state p{color:var(--ink-500);margin-bottom:18px}

/* ============ 客户评价 ============ */
.quotes{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.quote{
  background:var(--canvas-2);border:1px solid var(--line);border-left:3px solid var(--brand-500);
  border-radius:var(--r-md);padding:30px 28px;box-shadow:var(--shadow-1);
}
.quote:nth-child(2){margin-top:36px}
.quote:nth-child(3){grid-column:1/2}
.quote p{font-size:1.0625rem;color:var(--ink-700);line-height:1.85;margin-bottom:22px}
.quote-author{display:flex;align-items:center;gap:12px}
.avatar{
  width:40px;height:40px;border-radius:50%;background:var(--accent-100);color:var(--accent-700);
  display:grid;place-items:center;font-weight:700;font-size:.9375rem;flex:0 0 auto;
}
.quote-author strong{display:block;font-size:.9375rem;color:var(--ink-900)}
.quote-author span{font-size:.8125rem;color:var(--ink-300)}

/* ============ FAQ ============ */
.faq{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:26px 0;
  background:none;border:0;text-align:left;cursor:pointer;font-size:1.125rem;font-weight:600;color:var(--ink-900);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--brand-600)}
.faq-icon{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;
  color:var(--ink-500);transition:transform .28s var(--ease),background .28s var(--ease),border-color .28s var(--ease),color .28s var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(180deg);background:var(--brand-100);border-color:var(--brand-100);color:var(--brand-600)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease)}
.faq-a p{max-width:720px;padding-bottom:26px;color:var(--ink-500)}

/* ============ CTA ============ */
.cta-section{padding:0 0 104px}
.cta-card{
  background:var(--ink-900);border-radius:var(--r-xl);padding:72px 40px;text-align:center;color:#fff;
  position:relative;overflow:hidden;
}
.cta-card::before{
  content:"";position:absolute;right:-90px;top:-90px;width:320px;height:320px;border-radius:50%;
  border:1px solid rgba(255,255,255,.10);
}
.cta-card::after{
  content:"";position:absolute;right:10px;top:30px;width:150px;height:150px;border-radius:50%;
  border:1px solid rgba(255,90,54,.35);
}
.cta-card h2{color:#fff;font-size:clamp(1.75rem,2.6vw,2.4rem);font-weight:700;margin-bottom:16px;position:relative;z-index:1}
.cta-card p{color:rgba(255,255,255,.66);max-width:640px;margin:0 auto 32px;position:relative;z-index:1}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;position:relative;z-index:1}

/* ============ 页脚 ============ */
.footer{background:var(--ink-900);color:rgba(255,255,255,.7);border-top:1px solid rgba(255,255,255,.12)}
.footer-top{display:grid;grid-template-columns:1.1fr 2fr;gap:56px;padding:72px 24px 56px}
.footer .brand-mark{background:var(--brand-500)}
.footer .brand-name{color:#fff}
.footer .brand-sub{color:rgba(255,255,255,.55)}
.footer-brand>p{margin:20px 0 22px;font-size:.9375rem;color:rgba(255,255,255,.6);max-width:360px}
.footer-links-inline{display:flex;flex-wrap:wrap;gap:8px}
.footer-links-inline a{
  padding:6px 12px;border-radius:var(--r-pill);border:1px solid rgba(255,255,255,.16);
  font-size:.8125rem;color:rgba(255,255,255,.75);transition:border-color .2s var(--ease),color .2s var(--ease);
}
.footer-links-inline a:hover{border-color:var(--brand-500);color:#fff}
.footer-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.footer-col h4{font-size:.75rem;letter-spacing:.08em;color:rgba(255,255,255,.45);font-weight:600;margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:.9375rem;color:rgba(255,255,255,.75);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--brand-500)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:22px 24px;border-top:1px solid rgba(255,255,255,.12);font-size:.8125rem;color:rgba(255,255,255,.5);
}
.to-top{color:rgba(255,255,255,.7);transition:color .2s var(--ease)}
.to-top:hover{color:var(--brand-500)}

/* ============ 进场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .48s var(--ease),transform .48s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .hero-grid{gap:40px}
  .split{gap:44px}
  .dock-search.is-open{width:200px}
}
@media (max-width:991px){
  .dock-nav{display:none}
  .menu-btn{display:grid}
  .dock-search{display:none}
  .hero{padding:52px 0 68px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .split{grid-template-columns:1fr;gap:32px}
  .split + .split{margin-top:72px}
  .split-reverse .split-text{order:0}
  .split-reverse .split-media{order:0}
  .banner{margin-top:72px}
  .metrics-inner{grid-template-columns:1fr}
  .metric + .metric{border-left:0;border-top:1px solid var(--line)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .results-grid{grid-template-columns:1fr}
  .result + .result{border-left:0;border-top:1px solid rgba(255,255,255,.12)}
  .quotes{grid-template-columns:1fr}
  .quote:nth-child(2){margin-top:0}
  .quote:nth-child(3){grid-column:auto}
  .footer-top{grid-template-columns:1fr;gap:40px;padding:56px 24px 40px}
  .section{padding:80px 0}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:64px 0}
  .brand-sub{display:none}
  .section-head{margin-bottom:38px}
  .section-head--row{flex-direction:column;align-items:flex-start;gap:16px}
  .hero-title{font-size:clamp(2rem,7.4vw,2.6rem)}
  .hero-lead{font-size:1rem}
  .hero-cta .btn{width:100%}
  .pain-item{grid-template-columns:58px 1fr;gap:16px;padding:26px 0}
  .pain-num{font-size:1.875rem}
  .pain-item h3{font-size:1.1875rem}
  .news-grid{grid-template-columns:1fr}
  .banner-content{padding:26px 22px}
  .cta-card{padding:52px 22px;border-radius:var(--r-lg)}
  .cta-actions .btn{width:100%}
  .footer-cols{grid-template-columns:1fr;gap:28px}
  .faq-q{font-size:1rem;padding:22px 0;gap:16px}
}
@media (max-width:420px){
  .hero-title{letter-spacing:0}
  .metric{padding:26px 18px}
  .quote{padding:24px 20px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --canvas:#F7F5F1;
  --canvas-2:#FFFFFF;
  --ink-900:#101114;
  --ink-700:#2A2C31;
  --ink-500:#5C6068;
  --ink-300:#9AA0A8;
  --line:#E3DFD8;
  --brand-500:#FF5A36;
  --brand-600:#E8451F;
  --brand-100:#FFE9E1;
  --accent-700:#2E4A52;
  --accent-100:#E4EDEE;
  --success:#3F8F5B;
  --warn:#B4791F;
  --error:#C0492F;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-xl:28px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(16,17,20,.04),0 8px 24px -12px rgba(16,17,20,.10);
  --shadow-2:0 24px 60px -32px rgba(16,17,20,.28);
  --ease:cubic-bezier(.22,.7,.24,1);
  --maxw:1200px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--canvas);
  color:var(--ink-900);
  font-family:"Noto Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
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(--brand-500);outline-offset:2px;border-radius:4px;}
::selection{background:var(--brand-100);color:var(--ink-900);}

.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 24px;
}

/* ===== 浮动 Dock 导航 ===== */
.dock-wrap{
  position:sticky;
  top:0;
  z-index:60;
  padding:16px 0 0;
  pointer-events:none;
}
.dock{
  position:relative;
  width:min(1120px,92vw);
  margin:0 auto;
  display:flex;
  align-items:center;
  gap:20px;
  height:72px;
  padding:0 14px 0 20px;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.84);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow-1);
  pointer-events:auto;
  transition:height .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.dock-wrap.is-scrolled .dock{
  height:56px;
  border-color:#D6D1C8;
  box-shadow:var(--shadow-2);
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;
  border-radius:50%;
  display:grid;place-items:center;
  background:var(--ink-900);
  color:#fff;
  font-weight:700;
  font-size:.9375rem;
  letter-spacing:0;
  flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.12;}
.brand-name{font-weight:800;font-size:1.0625rem;letter-spacing:-.01em;}
.brand-sub{font-size:.6875rem;color:var(--ink-500);letter-spacing:.06em;}

.dock-nav{display:flex;align-items:center;gap:4px;margin-left:6px;}
.dock-nav a{
  padding:9px 15px;
  border-radius:var(--r-pill);
  font-size:.9375rem;
  color:var(--ink-700);
  transition:background .16s var(--ease),color .16s var(--ease);
  white-space:nowrap;
}
.dock-nav a:hover{background:#F1EDE6;}
.dock-nav a.active{color:var(--brand-600);background:var(--brand-100);font-weight:600;}

.dock-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:40px;height:40px;
  border-radius:50%;
  border:1px solid var(--line);
  background:var(--canvas-2);
  display:grid;place-items:center;
  cursor:pointer;
  transition:border-color .16s var(--ease),background .16s var(--ease);
}
.icon-btn:hover{border-color:var(--ink-300);background:#FAF8F4;}
.dock-toggle{
  display:none;
  width:40px;height:40px;
  border-radius:50%;
  border:1px solid var(--line);
  background:var(--canvas-2);
  cursor:pointer;
  place-items:center;
}
.dock-search{
  width:min(1120px,92vw);
  margin:10px auto 0;
  display:none;
  pointer-events:auto;
}
.dock-search.open{display:block;animation:fadeDown .28s var(--ease);}
@keyframes fadeDown{from{opacity:0;transform:translateY(-6px);}to{opacity:1;transform:none;}}
.dock-search form{
  display:flex;
  align-items:center;
  gap:10px;
  padding:8px 8px 8px 20px;
  background:rgba(255,255,255,.94);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  box-shadow:var(--shadow-1);
}
.dock-search input{
  flex:1;min-width:0;
  height:36px;
  border:0;
  background:transparent;
  outline:none;
  font-size:.9375rem;
}
.dock-search input::placeholder{color:var(--ink-300);}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--r-pill);
  border:1.5px solid transparent;
  font-size:.9375rem;
  font-weight:600;
  cursor:pointer;
  text-align:center;
  white-space:nowrap;
  transition:background .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease),box-shadow .16s var(--ease),transform .16s var(--ease);
}
.btn:active{transform:translateY(1px);}
.btn:disabled,.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;}
.btn-primary{background:var(--brand-500);color:#fff;}
.btn-primary:hover{background:var(--brand-600);box-shadow:0 12px 26px -14px rgba(255,90,54,.75);}
.btn-outline{border-color:var(--ink-900);color:var(--ink-900);background:transparent;}
.btn-outline:hover{background:var(--ink-900);color:#fff;}
.btn-ghost-light{border-color:rgba(255,255,255,.45);color:#fff;background:rgba(255,255,255,.04);}
.btn-ghost-light:hover{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.7);}
.btn-sm{height:40px;padding:0 18px;font-size:.875rem;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand-600);font-weight:600;font-size:.9375rem;
  transition:gap .16s var(--ease),color .16s var(--ease);
}
.btn-text:hover{gap:10px;color:var(--brand-500);}

/* ===== 通用排版块 ===== */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:.75rem;font-weight:600;letter-spacing:.08em;
  color:var(--accent-700);
}
.eyebrow::before{content:"";width:24px;height:2px;background:var(--brand-500);border-radius:2px;}
.eyebrow-light{color:rgba(255,255,255,.82);}

.section{padding:104px 0;}
.section-tight{padding:72px 0;}
.section-alt{background:var(--canvas-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;}
.section-head h2{
  margin-top:16px;
  font-size:clamp(1.75rem,2.6vw,2.5rem);
  font-weight:700;
  line-height:1.2;
  letter-spacing:-.02em;
}
.section-head p{margin-top:18px;color:var(--ink-500);font-size:1.0625rem;line-height:1.85;}
.section-head.row{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:32px;max-width:none;margin-bottom:48px;
}

/* ===== 面包屑 ===== */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:.875rem;
  color:rgba(255,255,255,.68);
  margin-bottom:22px;
}
.breadcrumb a{transition:color .16s var(--ease);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb .sep{opacity:.5;}
.breadcrumb .current{color:#fff;font-weight:500;}

/* ===== 分类页 Hero ===== */
.page-hero{
  position:relative;
  overflow:hidden;
  background:var(--ink-900);
  color:#fff;
  padding:64px 0 60px;
  min-height:380px;
  display:flex;
  align-items:flex-end;
}
.page-hero-bg{
  position:absolute;inset:0;
  background-size:cover;
  background-position:center;
  opacity:.5;
  transform:scale(1.02);
}
.page-hero::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(16,17,20,.70) 0%,rgba(16,17,20,.88) 100%);
}
.page-hero-inner{position:relative;z-index:2;width:100%;}
.page-hero h1{
  font-size:clamp(2.125rem,4.6vw,3.5rem);
  font-weight:800;
  line-height:1.1;
  letter-spacing:-.02em;
  max-width:900px;
}
.page-hero .hero-lead{
  margin-top:20px;
  max-width:660px;
  font-size:1.0625rem;
  line-height:1.85;
  color:rgba(255,255,255,.82);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:12px;
  margin-top:28px;
}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  font-size:.75rem;
  letter-spacing:.04em;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.2);
  color:rgba(255,255,255,.9);
}

/* ===== 锚点目录条 ===== */
.anchor-bar{
  position:sticky;
  top:88px;
  z-index:40;
  padding:10px 0;
  background:rgba(247,245,241,.92);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.anchor-inner{
  display:flex;
  gap:8px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-link{
  white-space:nowrap;
  padding:8px 18px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:var(--canvas-2);
  font-size:.875rem;
  color:var(--ink-700);
  transition:border-color .16s var(--ease),background .16s var(--ease),color .16s var(--ease);
}
.anchor-link:hover{border-color:var(--ink-300);}
.anchor-link.active{background:var(--brand-500);border-color:var(--brand-500);color:#fff;font-weight:600;}

/* ===== 步骤时间轴 ===== */
.timeline{position:relative;margin-top:8px;}
.timeline::before{
  content:"";
  position:absolute;
  left:19px;top:10px;bottom:34px;
  width:2px;
  background:var(--line);
}
.timeline-item{
  position:relative;
  padding-left:68px;
  padding-bottom:48px;
}
.timeline-item:last-child{padding-bottom:0;}
.timeline-dot{
  position:absolute;
  left:12px;top:7px;
  width:16px;height:16px;
  border-radius:50%;
  background:var(--canvas-2);
  border:2px solid var(--brand-500);
  z-index:2;
}
.timeline-item h3{
  font-size:1.3125rem;
  font-weight:600;
  line-height:1.35;
  letter-spacing:-.01em;
  display:flex;
  align-items:baseline;
  gap:12px;
  flex-wrap:wrap;
}
.step-num{
  font-size:.8125rem;
  font-weight:700;
  letter-spacing:.1em;
  color:var(--brand-500);
}
.timeline-item > p,
.timeline-body > p{
  margin-top:14px;
  max-width:720px;
  color:var(--ink-500);
  line-height:1.85;
}
.bullet-list{margin-top:16px;display:grid;gap:9px;max-width:760px;}
.bullet-list li{
  position:relative;
  padding-left:18px;
  font-size:.9375rem;
  line-height:1.75;
  color:var(--ink-700);
}
.bullet-list li::before{
  content:"";
  position:absolute;
  left:0;top:.68em;
  width:6px;height:6px;
  border-radius:2px;
  background:var(--brand-500);
}

/* ===== 图文交错 ===== */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:64px;
  align-items:center;
}
.split + .split{margin-top:96px;}
.split-media{
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
}
.split-media img{width:100%;height:100%;aspect-ratio:16/10;object-fit:cover;}
.split-body h3{
  font-size:clamp(1.375rem,2vw,1.75rem);
  font-weight:700;
  line-height:1.3;
  letter-spacing:-.015em;
}
.split-body > p{margin-top:16px;color:var(--ink-500);line-height:1.85;}
.split.reverse .split-media{order:2;}
.split.reverse .split-body{order:1;}

.tip-card{
  margin-top:26px;
  padding:20px 22px;
  border:1px solid var(--line);
  border-left:3px solid var(--accent-700);
  border-radius:var(--r-md);
  background:var(--canvas-2);
}
.tip-card strong{display:block;font-size:.9375rem;margin-bottom:6px;}
.tip-card p{font-size:.9375rem;color:var(--ink-500);line-height:1.8;}

/* ===== 紧凑问答速查 ===== */
.quick-list{border-top:1px solid var(--line);margin-top:8px;}
.quick-item{
  display:grid;
  grid-template-columns:minmax(200px,260px) 1fr;
  gap:32px;
  padding:26px 0;
  border-bottom:1px solid var(--line);
  transition:background .16s var(--ease);
}
.quick-item:hover{background:rgba(255,255,255,.6);}
.quick-item h3{font-size:1.0625rem;font-weight:600;line-height:1.5;}
.quick-item p{font-size:.9375rem;color:var(--ink-500);line-height:1.85;}

/* ===== CTA 带 ===== */
.cta-band{
  position:relative;
  overflow:hidden;
  background:var(--ink-900);
  color:#fff;
  border-radius:var(--r-xl);
  padding:64px 48px;
  text-align:center;
}
.cta-band::before{
  content:"";
  position:absolute;
  width:340px;height:340px;
  border:1px solid rgba(255,255,255,.09);
  border-radius:50%;
  right:-120px;top:-140px;
}
.cta-band::after{
  content:"";
  position:absolute;
  width:220px;height:220px;
  border:1px solid rgba(255,255,255,.07);
  border-radius:50%;
  left:-90px;bottom:-120px;
}
.cta-band h2{
  position:relative;
  font-size:clamp(1.75rem,2.8vw,2.5rem);
  font-weight:700;
  line-height:1.22;
  letter-spacing:-.02em;
}
.cta-band p{
  position:relative;
  margin:18px auto 0;
  max-width:620px;
  color:rgba(255,255,255,.78);
  font-size:1.0625rem;
  line-height:1.8;
}
.cta-actions{
  position:relative;
  display:flex;flex-wrap:wrap;gap:14px;justify-content:center;
  margin-top:34px;
}

/* ===== 页脚 ===== */
.footer{
  background:var(--ink-900);
  color:rgba(255,255,255,.7);
  padding:76px 0 0;
  margin-top:104px;
}
.footer a{color:rgba(255,255,255,.7);transition:color .16s var(--ease);}
.footer a:hover{color:#fff;}
.footer-top{
  display:grid;
  grid-template-columns:1.05fr 2fr;
  gap:64px;
  padding-bottom:52px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand .brand-mark{background:var(--brand-500);color:#fff;}
.footer-brand .brand-name{color:#fff;}
.footer-brand .brand-sub{color:rgba(255,255,255,.55);}
.footer-brand p{
  margin-top:20px;
  max-width:360px;
  font-size:.9375rem;
  line-height:1.85;
  color:rgba(255,255,255,.62);
}
.footer-links-inline{display:flex;flex-wrap:wrap;gap:18px;margin-top:22px;font-size:.875rem;}
.footer-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;}
.footer-col h4{
  font-size:.75rem;
  font-weight:600;
  letter-spacing:.08em;
  color:rgba(255,255,255,.45);
  margin-bottom:18px;
}
.footer-col li{margin-bottom:11px;}
.footer-col a{font-size:.9375rem;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:26px 0 34px;
  font-size:.875rem;
  color:rgba(255,255,255,.5);
}
.to-top{display:inline-flex;align-items:center;gap:6px;}
.to-top::after{content:"↑";font-size:.8125rem;}

/* ===== 进场动效 ===== */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .48s var(--ease),transform .48s var(--ease);}
.reveal.in{opacity:1;transform:none;}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* ===== 响应式 ===== */
@media (max-width:1200px){
  .split{gap:48px;}
}

@media (max-width:1024px){
  .dock-nav{
    display:none;
    position:absolute;
    top:calc(100% + 10px);
    left:0;right:0;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    padding:10px;
    background:rgba(255,255,255,.98);
    border:1px solid var(--line);
    border-radius:var(--r-lg);
    box-shadow:var(--shadow-2);
  }
  .dock-nav.open{display:flex;}
  .dock-nav a{padding:12px 16px;font-size:.9375rem;}
  .dock-toggle{display:grid;margin-left:auto;}
  .dock-actions{margin-left:0;}
  .dock-actions .btn{display:none;}
  .footer-top{grid-template-columns:1fr;gap:44px;}
}

@media (max-width:900px){
  .split{grid-template-columns:1fr;gap:32px;}
  .split.reverse .split-media{order:0;}
  .split.reverse .split-body{order:0;}
  .split + .split{margin-top:72px;}
  .quick-item{grid-template-columns:1fr;gap:10px;}
}

@media (max-width:768px){
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .container{padding:0 18px;}
  .brand-sub{display:none;}
  .brand-name{font-size:1rem;}
  .dock{height:60px;padding:0 12px 0 16px;gap:12px;}
  .dock-wrap.is-scrolled .dock{height:54px;}
  .page-hero{padding:48px 0 44px;min-height:320px;}
  .page-hero h1{font-size:clamp(1.75rem,7vw,2.375rem);letter-spacing:0;}
  .page-hero .hero-lead{font-size:1rem;}
  .anchor-bar{top:80px;}
  .timeline-item{padding-left:52px;padding-bottom:38px;}
  .timeline::before{left:15px;}
  .timeline-dot{left:8px;}
  .section-head.row{flex-direction:column;align-items:flex-start;gap:18px;}
  .cta-band{padding:48px 24px;border-radius:var(--r-lg);}
  .footer-cols{grid-template-columns:1fr 1fr;gap:28px;}
  .footer{margin-top:72px;}
}

@media (max-width:520px){
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .cta-actions{flex-direction:column;align-items:stretch;}
  .cta-actions .btn{width:100%;}
  .footer-cols{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .dock-search form{flex-direction:column;align-items:stretch;padding:14px;}
  .dock-search input{height:40px;}
}

/* roulang page: article */
*,*::before,*::after{box-sizing:border-box}
:root{
  --canvas:#F7F5F1;
  --canvas-2:#FFFFFF;
  --ink-900:#101114;
  --ink-700:#2A2C31;
  --ink-500:#5C6068;
  --ink-300:#9AA0A8;
  --line:#E3DFD8;
  --line-strong:#D6D1C8;
  --brand-500:#FF5A36;
  --brand-600:#E8451F;
  --brand-100:#FFE9E1;
  --accent-700:#2E4A52;
  --accent-100:#E4EDEE;
  --ok:#3F8F5B;
  --warn:#B4791F;
  --err:#C0492F;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-xl:28px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(16,17,20,.04),0 8px 24px -12px rgba(16,17,20,.10);
  --shadow-2:0 24px 60px -32px rgba(16,17,20,.28);
  --ease:cubic-bezier(.22,.7,.24,1);
  --container:1200px;
  --gutter:24px;
}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--canvas);
  color:var(--ink-900);
  font-family:"Noto Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  letter-spacing:-.01em;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:-.02em}
p{margin:0}
ul,ol{margin:0}
table{border-collapse:collapse}
::selection{background:var(--brand-100);color:var(--brand-600)}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--gutter)}
.num{font-variant-numeric:tabular-nums}

/* ---------- 浮动 Dock 导航 ---------- */
.dock-wrap{position:sticky;top:0;z-index:90;padding:16px 16px 0}
.dock{
  position:relative;
  max-width:1120px;
  margin:0 auto;
  display:flex;
  align-items:center;
  gap:14px;
  height:72px;
  padding:0 16px 0 14px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.82);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
  transition:height .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.dock.is-scrolled{height:56px;border-color:var(--line-strong);box-shadow:0 18px 40px -28px rgba(16,17,20,.35)}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;flex:0 0 auto;
  border-radius:12px;
  display:grid;place-items:center;
  background:var(--ink-900);
  color:#fff;
  font-size:17px;font-weight:800;
  letter-spacing:-.02em;
  position:relative;
  transition:width .28s var(--ease),height .28s var(--ease),border-radius .28s var(--ease);
}
.dock.is-scrolled .brand-mark{width:32px;height:32px;border-radius:10px}
.brand-mark::after{content:"";position:absolute;inset:0;border-radius:inherit;border:1px solid rgba(255,255,255,.18)}
.brand-text{display:flex;flex-direction:column;line-height:1.14}
.brand-name{font-size:16px;font-weight:800;letter-spacing:-.015em}
.brand-sub{font-size:11px;color:var(--ink-500);letter-spacing:.05em}
.dock-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.dock-link{
  position:relative;
  padding:8px 14px;
  border-radius:var(--r-pill);
  font-size:14px;
  color:var(--ink-700);
  transition:color .16s var(--ease),background .16s var(--ease);
}
.dock-link:hover{color:var(--ink-900);background:rgba(16,17,20,.05)}
.dock-link.is-active{color:var(--brand-600);background:var(--brand-100);font-weight:600}
.dock-link:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}
.dock-actions{display:flex;align-items:center;gap:8px;margin-left:8px}
.icon-btn{
  width:40px;height:40px;flex:0 0 auto;
  display:grid;place-items:center;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:var(--canvas-2);
  color:var(--ink-700);
  cursor:pointer;
  transition:border-color .16s var(--ease),color .16s var(--ease),background .16s var(--ease);
}
.icon-btn:hover{border-color:var(--ink-900);color:var(--ink-900)}
.icon-btn:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}
.icon-btn svg{width:18px;height:18px}
.menu-btn{display:none}
.dock-search{
  max-width:1120px;margin:10px auto 0;
  display:none;align-items:center;gap:10px;
  padding:10px 12px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.94);
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
}
.dock-search.is-open{display:flex}
.dock-search input{
  flex:1;height:40px;border:1px solid var(--line);border-radius:12px;
  background:var(--canvas-2);padding:0 14px;outline:none;
  transition:border-color .16s var(--ease);
}
.dock-search input:focus{border-color:var(--brand-500)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;
  border-radius:var(--r-pill);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:background .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease),transform .16s var(--ease),box-shadow .16s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}
.btn svg{width:16px;height:16px;transition:transform .2s var(--ease)}
.btn:hover svg{transform:translateX(4px)}
.btn-primary{background:var(--brand-500);color:#fff;box-shadow:0 10px 24px -16px rgba(255,90,54,.9)}
.btn-primary:hover{background:var(--brand-600)}
.btn-ghost{background:transparent;color:var(--ink-900);border-color:var(--ink-900);border-width:1.5px}
.btn-ghost:hover{background:var(--ink-900);color:#fff}
.btn-outline{background:transparent;color:var(--accent-700);border-color:var(--accent-700);border-width:1.5px}
.btn-outline:hover{background:var(--accent-100)}
.btn-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.28)}
.btn-light:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.5)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn:disabled,.btn[disabled]{opacity:.45;cursor:not-allowed}
.btn:disabled:hover{transform:none}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:.875rem;color:var(--ink-500);
  margin:30px 0 26px;
}
.breadcrumb a{color:var(--ink-500);transition:color .16s var(--ease)}
.breadcrumb a:hover{color:var(--brand-600)}
.breadcrumb .sep{color:var(--ink-300)}
.breadcrumb .current{color:var(--ink-900);max-width:360px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章头部 ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:60px;
  align-items:start;
  padding-bottom:8px;
}
.article-main{min-width:0;max-width:744px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  background:var(--brand-100);
  color:var(--brand-600);
  font-size:.75rem;
  font-weight:600;
  letter-spacing:.05em;
}
.article-head h1{
  font-size:clamp(1.875rem,3.4vw,3rem);
  line-height:1.18;
  font-weight:800;
  letter-spacing:-.02em;
  margin:16px 0 20px;
  color:var(--ink-900);
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  font-size:.875rem;color:var(--ink-500);
  padding-bottom:26px;
  border-bottom:1px solid var(--line);
}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--ink-300)}
.meta-row svg{width:14px;height:14px;vertical-align:-2px;margin-right:5px}
.cover{
  margin:30px 0 0;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--brand-100);
}
.cover img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* ---------- 正文 ---------- */
.article-body{
  margin-top:38px;
  font-size:1rem;
  line-height:1.9;
  color:var(--ink-700);
}
.article-body > * + *{margin-top:1.4em}
.article-body h2{
  font-size:clamp(1.25rem,2vw,1.5rem);
  line-height:1.35;
  font-weight:700;
  color:var(--ink-900);
  margin-top:2.3em;
  padding-left:14px;
  border-left:3px solid var(--brand-500);
}
.article-body h3{
  font-size:1.125rem;
  line-height:1.4;
  font-weight:600;
  color:var(--ink-900);
  margin-top:1.9em;
}
.article-body h4{font-size:1rem;font-weight:600;color:var(--ink-900);margin-top:1.6em}
.article-body a{color:var(--brand-600);border-bottom:1px solid currentColor;transition:color .16s var(--ease)}
.article-body a:hover{color:var(--brand-500)}
.article-body strong{color:var(--ink-900);font-weight:600}
.article-body ul{list-style:none;padding-left:1.25em}
.article-body ul li{position:relative}
.article-body ul li + li{margin-top:.55em}
.article-body ul li::before{
  content:"";position:absolute;left:-1.1em;top:.72em;
  width:6px;height:6px;border-radius:2px;background:var(--brand-500);
}
.article-body ol{list-style:decimal;padding-left:1.5em}
.article-body ol li + li{margin-top:.55em}
.article-body ol li::marker{color:var(--brand-500);font-weight:700}
.article-body blockquote{
  margin:1.9em 0;
  padding:18px 22px;
  background:var(--canvas-2);
  border-left:3px solid var(--brand-500);
  border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--ink-700);
}
.article-body blockquote p + p{margin-top:.9em}
.article-body figure{margin:2em 0}
.article-body img{border-radius:var(--r-md);border:1px solid var(--line)}
.article-body figcaption{font-size:.875rem;color:var(--ink-500);text-align:center;margin-top:10px}
.article-body table{
  width:100%;display:block;overflow-x:auto;
  font-size:.9375rem;
}
.article-body th,.article-body td{
  border-bottom:1px solid var(--line);
  padding:12px 14px;
  text-align:left;
  vertical-align:top;
}
.article-body th{font-weight:600;color:var(--ink-900);border-bottom:1.5px solid var(--ink-900);white-space:nowrap}
.article-body code{
  background:var(--accent-100);
  color:var(--accent-700);
  padding:2px 6px;border-radius:6px;font-size:.9em;
}
.article-body pre{
  background:var(--ink-900);color:#F2F0EC;
  padding:18px 20px;border-radius:var(--r-md);
  overflow-x:auto;line-height:1.7;
}
.article-body pre code{background:none;color:inherit;padding:0}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}

/* ---------- 空态 ---------- */
.empty-state{
  margin-top:40px;
  padding:56px 28px;
  text-align:center;
  background:rgba(255,90,54,.06);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
}
.empty-mark{
  width:64px;height:64px;margin:0 auto 20px;
  border-radius:50%;
  border:1.5px solid var(--brand-500);
  display:grid;place-items:center;
  color:var(--brand-500);
  font-size:22px;font-weight:800;
}
.empty-state h2{font-size:1.25rem;font-weight:700;color:var(--ink-900);border:0;padding:0;margin:0 0 10px}
.empty-state p{color:var(--ink-500);font-size:.9375rem;margin-bottom:22px}

/* ---------- 侧栏 ---------- */
.article-side{
  position:sticky;
  top:96px;
  display:flex;
  flex-direction:column;
  gap:20px;
}
.side-card{
  background:var(--canvas-2);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:22px;
  box-shadow:var(--shadow-1);
}
.side-card h2{
  font-size:.75rem;
  letter-spacing:.08em;
  font-weight:600;
  color:var(--ink-500);
  margin:0 0 14px;
}
.toc-list{list-style:none;padding:0;display:flex;flex-direction:column;gap:2px}
.toc-list a{
  display:block;
  padding:7px 10px 7px 12px;
  font-size:.875rem;
  line-height:1.6;
  color:var(--ink-700);
  border-left:2px solid var(--line);
  transition:color .16s var(--ease),border-color .16s var(--ease),background .16s var(--ease);
  overflow:hidden;
  text-overflow:ellipsis;
}
.toc-list a:hover{color:var(--brand-600);border-left-color:var(--brand-500);background:var(--brand-100)}
.side-links{list-style:none;padding:0;display:flex;flex-direction:column;gap:1px}
.side-links li + li{border-top:1px solid var(--line)}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 2px;
  font-size:.9375rem;
  color:var(--ink-700);
  transition:color .16s var(--ease);
}
.side-links a:hover{color:var(--brand-600)}
.side-links svg{width:15px;height:15px;flex:0 0 auto;transition:transform .2s var(--ease)}
.side-links a:hover svg{transform:translateX(4px)}
.side-cta{
  background:var(--ink-900);
  color:#fff;
  border-radius:var(--r-lg);
  padding:22px;
}
.side-cta h2{color:rgba(255,255,255,.55)}
.side-cta p{font-size:.9375rem;line-height:1.75;color:rgba(255,255,255,.75);margin-bottom:18px}

/* ---------- 文末模块 ---------- */
.article-foot{margin-top:56px;padding-top:32px;border-top:1px solid var(--line)}
.foot-block + .foot-block{margin-top:36px}
.foot-title{
  font-size:.75rem;letter-spacing:.08em;font-weight:600;
  color:var(--ink-500);margin-bottom:16px;
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;
  padding:7px 15px;
  border-radius:var(--r-pill);
  background:var(--accent-100);
  color:var(--accent-700);
  font-size:.8125rem;
  transition:background .16s var(--ease),color .16s var(--ease);
}
.tag:hover{background:var(--accent-700);color:#fff}
.next-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.next-card{
  display:flex;flex-direction:column;gap:10px;
  padding:20px;
  background:var(--canvas-2);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.next-card:hover{border-color:var(--brand-500);transform:translateY(-2px);box-shadow:var(--shadow-1)}
.next-card .kicker{font-size:.75rem;letter-spacing:.08em;color:var(--brand-600);font-weight:600}
.next-card strong{font-size:1rem;font-weight:600;color:var(--ink-900);line-height:1.5}
.next-card span{font-size:.875rem;color:var(--ink-500);line-height:1.7}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  margin-top:110px;
  padding:86px 0;
  background:var(--ink-900);
  color:#fff;
}
.cta-band::before{
  content:"";position:absolute;right:-140px;top:-160px;
  width:440px;height:440px;border-radius:50%;
  border:1px solid rgba(255,255,255,.10);
}
.cta-band::after{
  content:"";position:absolute;left:-90px;bottom:-200px;
  width:340px;height:340px;border-radius:50%;
  border:1px solid rgba(255,90,54,.32);
}
.cta-inner{position:relative;z-index:1;max-width:760px;margin:0 auto;text-align:center}
.cta-inner h2{
  font-size:clamp(1.75rem,2.6vw,2.5rem);
  line-height:1.22;
  font-weight:700;
  margin-bottom:16px;
}
.cta-inner p{color:rgba(255,255,255,.72);line-height:1.85;margin-bottom:30px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}

/* ---------- 页脚 ---------- */
.footer{background:#0B0C0E;color:#fff;border-top:1px solid rgba(255,255,255,.08)}
.footer-top{
  display:grid;
  grid-template-columns:1.15fr 2fr;
  gap:60px;
  padding:76px 0 56px;
}
.footer .brand-mark{background:#fff;color:var(--ink-900)}
.footer .brand-name{color:#fff}
.footer .brand-sub{color:rgba(255,255,255,.55)}
.footer-brand p{
  color:rgba(255,255,255,.62);
  font-size:.9375rem;
  line-height:1.85;
  max-width:380px;
  margin:20px 0 22px;
}
.footer-links-inline{display:flex;flex-wrap:wrap;gap:18px}
.footer-links-inline a{
  font-size:.875rem;color:rgba(255,255,255,.72);
  transition:color .16s var(--ease);
}
.footer-links-inline a:hover{color:var(--brand-500)}
.footer-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.footer-col h4{
  font-size:.75rem;letter-spacing:.08em;font-weight:600;
  color:rgba(255,255,255,.46);
  margin-bottom:16px;
}
.footer-col ul{list-style:none;padding:0;display:flex;flex-direction:column;gap:11px}
.footer-col a{
  font-size:.9375rem;color:rgba(255,255,255,.78);
  transition:color .16s var(--ease);
}
.footer-col a:hover{color:var(--brand-500)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 0;
  border-top:1px solid rgba(255,255,255,.10);
  font-size:.8125rem;
  color:rgba(255,255,255,.5);
}
.to-top{color:rgba(255,255,255,.72);transition:color .16s var(--ease)}
.to-top:hover{color:var(--brand-500)}

/* ---------- 进场动画 ---------- */
[data-reveal].reveal{opacity:0;transform:translateY(12px);transition:opacity .48s var(--ease),transform .48s var(--ease)}
[data-reveal].reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:48px}
  .article-main{max-width:744px;margin:0 auto;width:100%}
  .article-side{position:static;top:auto}
  .footer-top{grid-template-columns:1fr;gap:44px}
}
@media (max-width:900px){
  .dock-nav,.dock-cta{display:none}
  .menu-btn{display:grid}
  .dock-nav.is-open{
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    position:absolute;
    left:0;right:0;
    top:calc(100% + 10px);
    margin:0;
    padding:10px;
    background:rgba(255,255,255,.97);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    border:1px solid var(--line);
    border-radius:var(--r-lg);
    box-shadow:var(--shadow-2);
  }
  .dock-nav.is-open .dock-link{padding:12px 16px;border-radius:var(--r-md)}
  .footer-cols{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  :root{--gutter:16px}
  body{letter-spacing:0}
  .dock{height:60px;padding:0 10px 0 12px}
  .dock.is-scrolled{height:54px}
  .brand-sub{display:none}
  .breadcrumb{margin:20px 0 18px}
  .article-head h1{margin:12px 0 16px}
  .meta-row{padding-bottom:20px}
  .article-body{margin-top:30px;line-height:1.85}
  .next-grid{grid-template-columns:1fr}
  .cta-band{margin-top:72px;padding:64px 0}
  .footer-top{padding:56px 0 40px}
  .footer-cols{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
}
@media (max-width:520px){
  .brand-name{font-size:15px}
  .article-head h1{font-size:1.6rem}
  .article-body h2{font-size:1.15rem;padding-left:12px}
  .empty-state{padding:40px 20px}
  .cta-actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  [data-reveal].reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --canvas:#F7F5F1;
  --canvas-2:#FFFFFF;
  --ink-900:#101114;
  --ink-700:#2A2C31;
  --ink-500:#5C6068;
  --ink-300:#9AA0A8;
  --line:#E3DFD8;
  --line-dark:rgba(255,255,255,.12);
  --brand-500:#FF5A36;
  --brand-600:#E8451F;
  --brand-100:#FFE9E1;
  --accent-700:#2E4A52;
  --accent-100:#E4EDEE;
  --ok:#3F8F5B;
  --warn:#B4791F;
  --err:#C0492F;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-xl:28px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(16,17,20,.04),0 8px 24px -12px rgba(16,17,20,.10);
  --shadow-2:0 24px 60px -32px rgba(16,17,20,.28);
  --ease:cubic-bezier(.22,.7,.24,1);
  --sp:8px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--canvas);
  color:var(--ink-900);
  font-family:"Noto Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .16s var(--ease);}
p{margin:0 0 1em;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.narrow{max-width:744px;}

/* ---------- Dock 导航 ---------- */
.dock-wrap{
  position:sticky;
  top:16px;
  z-index:80;
  padding:0 16px;
  pointer-events:none;
}
.dock{
  pointer-events:auto;
  width:min(1120px,100%);
  margin:0 auto;
  display:flex;
  align-items:center;
  gap:16px;
  padding:10px 14px;
  background:rgba(255,255,255,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  box-shadow:var(--shadow-1);
  transition:padding .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.dock-wrap.is-shrunk .dock{
  padding:6px 12px;
  border-color:#D6D1C8;
  box-shadow:var(--shadow-2);
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:12px;
  background:var(--ink-900);
  color:#fff;
  font-weight:800;
  font-size:18px;
  letter-spacing:-.02em;
  transition:background .28s var(--ease),width .28s var(--ease),height .28s var(--ease);
}
.dock-wrap.is-shrunk .brand-mark{width:32px;height:32px;font-size:16px;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-weight:800;font-size:15px;letter-spacing:-.02em;}
.brand-sub{font-size:11px;color:var(--ink-500);letter-spacing:.04em;}
.dock-nav{
  display:flex;
  align-items:center;
  gap:4px;
  margin:0 auto;
}
.dock-nav a{
  position:relative;
  padding:8px 14px;
  border-radius:var(--r-pill);
  font-size:14px;
  color:var(--ink-700);
  white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.dock-nav a:hover{background:var(--accent-100);color:var(--ink-900);}
.dock-nav a.is-active{
  color:var(--ink-900);
  font-weight:600;
  background:var(--brand-100);
}
.dock-nav a.is-active::after{
  content:"";
  position:absolute;
  left:50%;bottom:2px;
  width:16px;height:2px;
  transform:translateX(-50%);
  background:var(--brand-500);
  border-radius:2px;
}
.dock-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto;}
.icon-btn{
  width:40px;height:40px;
  display:grid;place-items:center;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink-700);
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.icon-btn:hover{border-color:var(--ink-900);color:var(--ink-900);}
.icon-btn svg{width:18px;height:18px;}
.search-field{
  width:0;
  opacity:0;
  overflow:hidden;
  transition:width .28s var(--ease),opacity .28s var(--ease),margin .28s var(--ease);
}
.search-field.is-open{width:240px;opacity:1;margin-right:4px;}
.search-field input{
  width:100%;
  height:40px;
  padding:0 16px;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  background:#fff;
  font-size:14px;
  outline:none;
  transition:border-color .2s var(--ease);
}
.search-field input:focus{border-color:var(--brand-500);}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  border:1.5px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .16s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--brand-500);color:#fff;box-shadow:0 10px 24px -14px rgba(255,90,54,.9);}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-ghost{background:transparent;color:var(--ink-900);border-color:var(--ink-900);}
.btn-ghost:hover{background:var(--ink-900);color:#fff;}
.btn-accent{background:transparent;color:var(--accent-700);border-color:var(--accent-700);}
.btn-accent:hover{background:var(--accent-700);color:#fff;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand-600);font-weight:600;font-size:14px;
}
.btn-text svg{width:16px;height:16px;transition:transform .2s var(--ease);}
.btn-text:hover svg{transform:translateX(4px);}
.menu-toggle{display:none;}

/* ---------- 通用区块 ---------- */
.section{padding:104px 0;}
.section-sm{padding:72px 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;font-weight:600;
  letter-spacing:.08em;
  color:var(--ink-500);
  text-transform:uppercase;
  margin-bottom:18px;
}
.eyebrow::before{content:"";width:24px;height:2px;background:var(--brand-500);border-radius:2px;}
.h2{font-size:clamp(1.75rem,2.6vw,2.5rem);line-height:1.2;font-weight:700;letter-spacing:-.02em;}
.lead{font-size:1.125rem;line-height:1.85;color:var(--ink-700);}
.muted{color:var(--ink-500);font-size:.875rem;line-height:1.7;}

/* ---------- Hero ---------- */
.hero{padding:56px 0 72px;}
.hero-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:56px;
  align-items:center;
}
.hero h1{
  font-size:clamp(2.2rem,4.4vw,3.9rem);
  line-height:1.08;
  font-weight:800;
  letter-spacing:-.02em;
  margin-bottom:20px;
}
.hero h1 em{font-style:normal;color:var(--brand-500);}
.hero p.lead{max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:28px;
  margin-top:36px;padding-top:24px;
  border-top:1px solid var(--line);
}
.hero-fact strong{
  display:block;
  font-size:1.5rem;
  font-weight:700;
  letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
}
.hero-fact span{font-size:.8125rem;color:var(--ink-500);}
.hero-media{position:relative;}
.hero-media img{
  width:100%;
  aspect-ratio:16/11;
  object-fit:cover;
  border-radius:var(--r-xl);
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
}
.hero-tag{
  position:absolute;
  left:-14px;bottom:24px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  padding:10px 18px;
  font-size:.8125rem;
  font-weight:600;
  color:var(--ink-700);
  box-shadow:var(--shadow-1);
}
.hero-tag i{
  display:inline-block;width:8px;height:8px;border-radius:50%;
  background:var(--brand-500);margin-right:8px;
  font-style:normal;
}

/* ---------- 面包屑 ---------- */
.crumb{
  display:flex;align-items:center;gap:8px;
  font-size:.875rem;color:var(--ink-500);
  margin-bottom:24px;
}
.crumb a:hover{color:var(--brand-600);}
.crumb .sep{color:var(--ink-300);}
.crumb .current{color:var(--ink-900);font-weight:600;}

/* ---------- 双栏对照 ---------- */
.compare{
  display:grid;
  grid-template-columns:1fr 1fr;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:var(--canvas-2);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--shadow-1);
}
.compare-col{padding:40px 36px;}
.compare-col + .compare-col{border-left:1px solid var(--line);}
.compare-head{
  display:flex;align-items:center;gap:10px;
  margin-bottom:26px;
}
.compare-head h3{font-size:1.25rem;font-weight:700;}
.badge{
  display:inline-flex;align-items:center;
  padding:4px 12px;
  border-radius:var(--r-pill);
  font-size:.75rem;font-weight:600;
  letter-spacing:.02em;
}
.badge-brand{background:var(--brand-100);color:var(--brand-600);}
.badge-accent{background:var(--accent-100);color:var(--accent-700);}
.badge-line{border:1px solid var(--line);color:var(--ink-500);background:#fff;}
.compare-list li{
  display:flex;gap:16px;
  padding:18px 0;
  border-top:1px solid var(--line);
}
.compare-list li:first-child{border-top:0;padding-top:0;}
.compare-list .num{
  flex:0 0 auto;
  font-size:.8125rem;
  font-weight:700;
  color:var(--ink-300);
  font-variant-numeric:tabular-nums;
  letter-spacing:.06em;
  padding-top:2px;
}
.compare-list strong{display:block;font-size:.9375rem;font-weight:600;margin-bottom:4px;}
.compare-list p{font-size:.875rem;color:var(--ink-500);line-height:1.75;margin:0;}

/* ---------- 要点清单 ---------- */
.points{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
  margin-top:48px;
}
.point-card{
  display:flex;
  gap:18px;
  padding:26px;
  background:var(--canvas-2);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.point-card:hover{
  transform:translateY(-2px);
  border-color:var(--brand-500);
  box-shadow:var(--shadow-1);
}
.point-icon{
  flex:0 0 auto;
  width:44px;height:44px;
  display:grid;place-items:center;
  border-radius:var(--r-md);
  background:var(--accent-100);
  color:var(--accent-700);
}
.point-icon svg{width:22px;height:22px;}
.point-card h3{font-size:1.0625rem;font-weight:600;margin-bottom:6px;}
.point-card p{font-size:.875rem;color:var(--ink-500);line-height:1.75;margin:0;}

/* ---------- 支持通道表格 ---------- */
.table-wrap{
  margin-top:40px;
  background:var(--canvas-2);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
}
table.support-table{width:100%;border-collapse:collapse;}
.support-table th{
  text-align:left;
  font-size:.75rem;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--ink-500);
  padding:18px 28px;
  border-bottom:1px solid var(--line);
  background:#FCFBF9;
}
.support-table td{
  padding:22px 28px;
  border-bottom:1px solid var(--line);
  font-size:.9375rem;
  vertical-align:top;
}
.support-table tbody tr:last-child td{border-bottom:0;}
.support-table tbody tr{transition:background .2s var(--ease);}
.support-table tbody tr:hover{background:#FCFBF9;}
.support-table td:first-child{font-weight:600;}
.support-table td:nth-child(2){color:var(--ink-500);line-height:1.75;}
.support-table .time{font-variant-numeric:tabular-nums;color:var(--ink-700);}

/* ---------- 表单 ---------- */
.form-panel{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:56px;
  align-items:start;
}
.info-list li{
  display:flex;gap:14px;
  padding:16px 0;
  border-top:1px solid var(--line);
  font-size:.9375rem;
  color:var(--ink-700);
}
.info-list li:first-child{border-top:0;padding-top:0;}
.info-list .dot{
  flex:0 0 auto;
  width:8px;height:8px;border-radius:50%;
  background:var(--brand-500);
  margin-top:10px;
}
form.support-form{
  background:var(--canvas-2);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:32px;
  box-shadow:var(--shadow-1);
}
.field{margin-bottom:20px;}
.field label{
  display:block;
  font-size:.875rem;
  font-weight:600;
  margin-bottom:8px;
  color:var(--ink-700);
}
.field input,
.field select,
.field textarea{
  width:100%;
  padding:13px 16px;
  border:1px solid var(--line);
  border-radius:12px;
  background:#fff;
  font-size:.9375rem;
  outline:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{min-height:132px;resize:vertical;line-height:1.75;}
.field input:focus,
.field select:focus,
.field textarea:focus{border-color:var(--brand-500);}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--ink-500) 50%),linear-gradient(135deg,var(--ink-500) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.form-foot{
  display:flex;align-items:center;gap:16px;
  flex-wrap:wrap;
  margin-top:8px;
}
.form-note{font-size:.8125rem;color:var(--ink-500);line-height:1.7;}
.form-status{
  margin-top:16px;
  font-size:.875rem;
  padding:12px 16px;
  border-radius:12px;
  display:none;
}
.form-status.is-ok{
  display:block;
  background:rgba(63,143,91,.10);
  color:var(--ok);
  border:1px solid rgba(63,143,91,.28);
}

/* ---------- FAQ ---------- */
.faq-list{margin-top:40px;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;
  padding:26px 0;
  text-align:left;
  font-size:1.125rem;
  font-weight:600;
  color:var(--ink-900);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--brand-600);}
.faq-sign{
  flex:0 0 auto;
  width:26px;height:26px;
  position:relative;
  transition:transform .28s var(--ease);
}
.faq-sign::before,
.faq-sign::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--ink-500);
  border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-sign::before{width:14px;height:2px;}
.faq-sign::after{width:2px;height:14px;transition:opacity .28s var(--ease);}
.faq-item.is-open .faq-sign{transform:rotate(180deg);}
.faq-item.is-open .faq-sign::before{background:var(--brand-500);}
.faq-item.is-open .faq-sign::after{opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .32s var(--ease);
}
.faq-a-inner{
  max-width:720px;
  padding:0 0 26px;
  font-size:1rem;
  line-height:1.8;
  color:var(--ink-500);
}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink-900);
  color:#fff;
  padding:88px 0;
}
.cta-inner{
  text-align:center;
  max-width:720px;
  margin:0 auto;
}
.cta-band .eyebrow{color:rgba(255,255,255,.6);}
.cta-band .eyebrow::before{background:var(--brand-500);}
.cta-band h2{font-size:clamp(1.75rem,2.8vw,2.5rem);line-height:1.2;margin-bottom:18px;}
.cta-band p{color:rgba(255,255,255,.7);font-size:1.0625rem;line-height:1.8;}
.cta-actions{
  display:flex;justify-content:center;flex-wrap:wrap;
  gap:14px;margin-top:32px;
}
.cta-band .btn-ghost{color:#fff;border-color:rgba(255,255,255,.35);}
.cta-band .btn-ghost:hover{background:#fff;color:var(--ink-900);border-color:#fff;}

/* ---------- 页脚 ---------- */
.footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:72px 0 0;}
.footer-top{
  display:grid;
  grid-template-columns:4fr 8fr;
  gap:64px;
  padding-bottom:56px;
}
.footer .brand-name{color:#fff;}
.footer .brand-sub{color:rgba(255,255,255,.5);}
.footer .brand-mark{background:var(--brand-500);}
.footer-brand p{
  font-size:.875rem;line-height:1.85;
  margin:20px 0 24px;
  max-width:360px;
  color:rgba(255,255,255,.62);
}
.footer-links-inline{display:flex;flex-wrap:wrap;gap:10px;}
.footer-links-inline a{
  font-size:.8125rem;
  padding:6px 14px;
  border:1px solid var(--line-dark);
  border-radius:var(--r-pill);
  color:rgba(255,255,255,.72);
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.footer-links-inline a:hover{border-color:var(--brand-500);color:#fff;}
.footer-cols{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:32px;
}
.footer-col h4{
  font-size:.75rem;
  font-weight:600;
  letter-spacing:.08em;
  color:rgba(255,255,255,.45);
  margin-bottom:18px;
}
.footer-col ul li{margin-bottom:12px;}
.footer-col ul a{
  font-size:.875rem;
  color:rgba(255,255,255,.72);
}
.footer-col ul a:hover{color:var(--brand-500);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;
  padding:24px 24px 32px;
  border-top:1px solid var(--line-dark);
  font-size:.8125rem;
  color:rgba(255,255,255,.5);
}
.to-top{color:rgba(255,255,255,.72);}
.to-top:hover{color:var(--brand-500);}

/* ---------- 进场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .48s var(--ease),transform .48s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 移动抽屉 ---------- */
.drawer{
  position:fixed;
  inset:0;
  z-index:120;
  display:none;
}
.drawer.is-open{display:block;}
.drawer-mask{
  position:absolute;inset:0;
  background:rgba(16,17,20,.45);
  backdrop-filter:blur(2px);
}
.drawer-panel{
  position:absolute;
  left:50%;top:12px;
  transform:translateX(-50%);
  width:min(420px,92vw);
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  padding:20px;
  box-shadow:var(--shadow-2);
}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  margin-bottom:12px;
}
.drawer-panel a.drawer-link{
  display:block;
  padding:14px 12px;
  border-radius:var(--r-md);
  font-size:1rem;
  font-weight:600;
  border-bottom:1px solid var(--line);
}
.drawer-panel a.drawer-link:last-of-type{border-bottom:0;}
.drawer-panel a.drawer-link:hover{background:var(--canvas);}
.drawer-panel a.drawer-link.is-active{color:var(--brand-600);}
.drawer-cta{margin-top:14px;width:100%;}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .section{padding:88px 0;}
  .hero-grid{gap:40px;}
}
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-media img{aspect-ratio:16/9;}
  .form-panel{grid-template-columns:1fr;gap:40px;}
  .footer-top{grid-template-columns:1fr;gap:44px;}
}
@media (max-width:900px){
  .compare{grid-template-columns:1fr;}
  .compare-col + .compare-col{border-left:0;border-top:1px solid var(--line);}
  .points{grid-template-columns:1fr;}
}
@media (max-width:768px){
  body{font-size:15.5px;line-height:1.75;}
  .container{padding:0 18px;}
  .section{padding:64px 0;}
  .section-sm{padding:48px 0;}
  .dock-nav{display:none;}
  .search-field.is-open{display:none;}
  .menu-toggle{display:grid;}
  .dock{gap:10px;}
  .brand-sub{display:none;}
  .hero{padding:32px 0 48px;}
  .hero-facts{gap:20px;}
  .hero-tag{left:12px;bottom:12px;}
  .compare-col{padding:28px 22px;}
  .point-card{padding:22px;}
  .support-table th,
  .support-table td{padding:16px 18px;}
  .table-wrap{overflow-x:auto;}
  table.support-table{min-width:640px;}
  .field-row{grid-template-columns:1fr;}
  form.support-form{padding:24px 20px;}
  .faq-q{font-size:1rem;padding:20px 0;}
  .cta-band{padding:64px 0;}
  .footer-cols{grid-template-columns:1fr 1fr;}
  .footer-bottom{padding:20px 18px 28px;}
}
@media (max-width:520px){
  .hero h1{font-size:1.95rem;}
  .btn{width:100%;}
  .hero-actions .btn,
  .cta-actions .btn{width:100%;}
  .footer-cols{grid-template-columns:1fr;}
  .hero-fact strong{font-size:1.25rem;}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  .reveal{transform:none;opacity:1;}
  html{scroll-behavior:auto;}
}