/* roulang page: index */
:root{
  --ink:#12352C;
  --ink-hover:#0C2A22;
  --ink-soft:#E7EEE9;
  --accent:#D2542F;
  --accent-hover:#B34A28;
  --accent-soft:#FBEDE6;
  --bg:#F6F3EC;
  --surface:#FFFFFF;
  --surface-2:#FBF9F5;
  --line:#E3DED3;
  --text:#141A17;
  --text-2:#5C6660;
  --text-3:#8C948E;
  --dark:#0F1E19;
  --dark-text:#E9EDE9;
  --dark-faint:#9AAAA2;
  --ok:#2F6F5E;
  --warn:#D2A24C;
  --err:#B4372A;
  --s1:0 1px 2px rgba(15,30,25,.05);
  --s2:0 8px 24px -12px rgba(15,30,25,.14);
  --s3:0 24px 60px -32px rgba(15,30,25,.28);
  --r-card:10px;
  --r-btn:6px;
  --r-pill:999px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --maxw:1240px;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);font-weight:600;letter-spacing:-.01em;line-height:1.25}
p{margin:0}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 32px}
@media (min-width:1440px){.container{max-width:1320px}}
.section{padding:112px 0}
.section-alt{background:var(--surface)}
.section-soft{background:var(--surface-2)}
@media (max-width:1023px){
  .section{padding:80px 0}
  .container{padding:0 20px}
  body{padding-bottom:calc(84px + env(safe-area-inset-bottom))}
}
@media (max-width:639px){
  .section{padding:64px 0}
  body{font-size:16px}
}

/* ---------- 滚动进度条 ---------- */
.progress-bar{position:fixed;top:0;left:0;height:2px;width:0;background:var(--ink);z-index:120;transition:width .1s linear}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(246,243,236,.94);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--s1)}
.nav-wrap{display:flex;align-items:center;gap:28px;height:72px;transition:height .2s var(--ease)}
.site-header.is-scrolled .nav-wrap{height:64px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:9px;background:var(--ink);color:#fff;
  display:grid;place-items:center;font-family:var(--font-sans);
  font-size:15px;font-weight:700;letter-spacing:0;
}
.brand-text{font-family:var(--font-serif);font-size:19px;font-weight:600;color:var(--ink);letter-spacing:-.01em}
.nav-main{display:flex;align-items:center;gap:26px;margin-left:8px}
.nav-link{position:relative;font-size:15px;color:var(--text-2);padding:8px 0;transition:color .12s var(--ease);white-space:nowrap}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:2px;background:var(--ink);
  transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink);font-weight:500}
.nav-actions{display:flex;align-items:center;gap:18px;margin-left:auto}
.link-quiet{font-size:14px;color:var(--text-2);border-bottom:1px solid var(--line);padding-bottom:2px;transition:color .12s var(--ease),border-color .12s var(--ease)}
.link-quiet:hover{color:var(--ink);border-color:var(--ink)}
.nav-icon{display:none;width:44px;height:44px;place-items:center;font-size:20px;color:var(--ink);border-radius:var(--r-btn)}
.nav-icon:hover{background:var(--ink-soft)}
@media (max-width:1023px){
  .nav-main,.nav-actions{display:none}
  .nav-icon{display:grid}
  .nav-wrap{height:56px;justify-content:space-between}
  .site-header.is-scrolled .nav-wrap{height:56px}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:16px;font-weight:500;line-height:1;border:1px solid transparent;
  transition:background .2s var(--ease),transform .12s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  white-space:nowrap;
}
.btn i{font-size:14px}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:var(--s2)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--ink-soft);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{height:40px;padding:0 18px;font-size:15px}
.btn-sm i{font-size:13px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:15px;color:var(--ink);border-bottom:1px solid var(--ink);padding-bottom:2px;transition:color .2s var(--ease),border-color .2s var(--ease)}
.btn-text:hover{color:var(--accent);border-color:var(--accent)}
.btn-text i{font-size:12px;transition:transform .2s var(--ease)}
.btn-text:hover i{transform:translateX(3px)}

/* ---------- 标签 / 徽章 ---------- */
.sec-label{
  display:inline-block;font-size:12px;letter-spacing:.08em;font-weight:600;
  color:var(--ink);text-transform:uppercase;
}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:56px}
.sec-title{font-size:36px;margin-top:14px;color:var(--text)}
.sec-sub{margin-top:14px;color:var(--text-2);font-size:17px;max-width:44ch}
.sec-link{flex-shrink:0}
@media (max-width:767px){
  .sec-head{flex-direction:column;align-items:flex-start;gap:18px;margin-bottom:36px}
  .sec-title{font-size:26px}
  .sec-sub{font-size:16px}
}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.08em;border:1px solid var(--ink);color:var(--ink);background:transparent;
}
.badge-solid{background:var(--accent);border-color:var(--accent);color:#fff}

/* ---------- 首屏 ---------- */
.hero{position:relative;overflow:hidden;background:var(--bg);padding:88px 0 96px}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:center}
.hero h1{font-size:44px;line-height:1.22;color:var(--text)}
.hero h1 em{font-style:normal;color:var(--ink)}
.hero-sub{margin-top:22px;font-size:18px;color:var(--text-2);max-width:34ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}
.hero-note{margin-top:20px;font-size:12px;color:var(--text-3);letter-spacing:.04em}
.hero-visual{position:relative}
.hero-visual::before{
  content:"";position:absolute;left:-18px;top:18px;right:18px;bottom:-18px;
  border:1px solid var(--ink);border-radius:var(--r-card);opacity:.35;z-index:0;
}
.hero-img{
  position:relative;z-index:1;width:100%;aspect-ratio:4/3;border-radius:var(--r-card);
  box-shadow:var(--s2);transition:transform .48s var(--ease);overflow:hidden;
}
.hero-visual:hover .hero-img{transform:scale(1.03)}
@media (max-width:1023px){
  .hero{padding:56px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero h1{font-size:32px}
  .hero-sub{font-size:16px;max-width:none}
}

/* ---------- 信任条 ---------- */
.trustbar{background:var(--ink);color:var(--dark-text);padding:28px 0}
.trust-inner{display:flex;align-items:center;gap:48px;flex-wrap:nowrap;overflow-x:auto}
.trust-item{display:flex;align-items:baseline;gap:10px;flex-shrink:0}
.trust-num{
  font-family:var(--font-sans);font-size:24px;font-weight:600;color:#fff;
  font-variant-numeric:tabular-nums;letter-spacing:-.01em;
}
.trust-label{font-size:13px;color:var(--dark-faint);letter-spacing:.04em}
.trust-divider{width:1px;height:28px;background:rgba(233,237,233,.18);flex-shrink:0}
@media (max-width:767px){
  .trust-inner{gap:32px}
  .trust-num{font-size:20px}
}

/* ---------- 卖点区 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.feature-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:32px;box-shadow:var(--s1);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
  display:flex;flex-direction:column;
}
.feature-card:hover{border-color:rgba(18,53,44,.2);box-shadow:var(--s2);transform:translateY(-2px)}
.feature-num{
  font-size:13px;font-weight:600;color:var(--ink);letter-spacing:.08em;
  font-variant-numeric:tabular-nums;margin-bottom:18px;display:block;
}
.feature-card h3{font-size:20px;line-height:1.4}
.feature-card p{margin-top:12px;font-size:15px;line-height:1.75;color:var(--text-2)}
.feature-card .btn-text{margin-top:auto;padding-top:22px;align-self:flex-start}
.f-main{grid-column:1/span 6;grid-row:1/span 2}
.f-main .feature-media{margin-top:22px;border-radius:var(--r-card);overflow:hidden;aspect-ratio:16/10}
.f-main .feature-media img{width:100%;height:100%;transition:transform .48s var(--ease)}
.f-main:hover .feature-media img{transform:scale(1.03)}
.f-2{grid-column:7/span 6}
.f-3{grid-column:7/span 3}
.f-4{grid-column:10/span 3}
@media (max-width:1023px){
  .feature-grid{grid-template-columns:1fr}
  .f-main,.f-2,.f-3,.f-4{grid-column:auto;grid-row:auto}
  .feature-card{padding:26px}
}

/* ---------- 演示区 ---------- */
.demo-grid{display:grid;grid-template-columns:5fr 7fr;gap:64px;align-items:center}
.steps{position:relative;padding-left:4px}
.step{position:relative;padding-left:42px;padding-bottom:38px}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";position:absolute;left:11px;top:26px;bottom:0;width:1px;background:var(--line);
}
.step:last-child::before{display:none}
.step-dot{
  position:absolute;left:0;top:2px;width:23px;height:23px;border-radius:50%;
  background:var(--ink);color:#fff;display:grid;place-items:center;
  font-size:11px;font-weight:600;font-variant-numeric:tabular-nums;
}
.step h3{font-size:20px}
.step p{margin-top:8px;font-size:15px;color:var(--text-2);line-height:1.75}
.demo-media{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:16px;box-shadow:var(--s2);
}
.demo-media img{width:100%;aspect-ratio:16/10;border-radius:6px;transition:transform .48s var(--ease)}
.demo-media:hover img{transform:scale(1.02)}
@media (max-width:1023px){
  .demo-grid{grid-template-columns:1fr;gap:40px}
}

/* ---------- 证据区 ---------- */
.proof-grid{display:grid;grid-template-columns:6fr 5fr;gap:72px;align-items:start}
.quote{
  font-family:var(--font-serif);font-size:28px;line-height:1.5;color:var(--ink);
  letter-spacing:-.01em;
}
.quote-mark{font-size:44px;color:var(--accent);line-height:1;display:block;margin-bottom:16px;font-family:var(--font-serif)}
.quote-by{margin-top:24px;font-size:14px;color:var(--text-2)}
.quote-by strong{color:var(--text);font-weight:600}
.proof-list{border-top:1px solid var(--line)}
.proof-item{display:flex;gap:24px;align-items:baseline;padding:24px 0;border-bottom:1px solid var(--line)}
.proof-value{
  font-size:26px;font-weight:600;color:var(--ink);font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;flex-shrink:0;min-width:118px;font-family:var(--font-sans);
}
.proof-desc{font-size:15px;color:var(--text-2);line-height:1.7}
@media (max-width:1023px){
  .proof-grid{grid-template-columns:1fr;gap:44px}
  .quote{font-size:24px}
  .proof-value{font-size:22px;min-width:96px}
}

/* ---------- 分类入口 ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.cat-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--s1);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.cat-card:hover{border-color:rgba(18,53,44,.2);box-shadow:var(--s2);transform:translateY(-3px)}
.cat-thumb{aspect-ratio:4/3;overflow:hidden;background:var(--surface-2)}
.cat-thumb img{width:100%;height:100%;transition:transform .48s var(--ease)}
.cat-card:hover .cat-thumb img{transform:scale(1.04)}
.cat-body{padding:24px;display:flex;flex-direction:column;flex:1}
.cat-body h3{font-size:18px;line-height:1.45}
.cat-body p{margin-top:10px;font-size:14px;color:var(--text-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cat-body .btn-text{margin-top:auto;padding-top:20px;align-self:flex-start}
@media (max-width:1023px){.cat-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:599px){.cat-grid{grid-template-columns:1fr}}

/* ---------- 最新信息（CMS） ---------- */
.news-list{display:grid;grid-template-columns:1fr;gap:20px}
.post-card{
  display:grid;grid-template-columns:240px 1fr;gap:28px;align-items:stretch;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--s1);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.post-card:hover{border-color:rgba(18,53,44,.22);box-shadow:var(--s2)}
.post-thumb{display:block;border-radius:6px;overflow:hidden;aspect-ratio:4/3;background:var(--surface-2)}
.post-thumb img{width:100%;height:100%;transition:transform .48s var(--ease)}
.post-card:hover .post-thumb img{transform:scale(1.03)}
.post-body{display:flex;flex-direction:column;min-width:0}
.post-meta{display:flex;align-items:center;gap:14px;font-size:12px;color:var(--text-3);
  letter-spacing:.04em;font-variant-numeric:tabular-nums}
.post-title{margin-top:12px;font-size:18px;line-height:1.5}
.post-title a{transition:color .12s var(--ease)}
.post-card:hover .post-title a{color:var(--ink);text-decoration:underline;text-underline-offset:4px}
.post-desc{margin-top:10px;font-size:14px;color:var(--text-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-more{margin-top:auto;padding-top:18px;display:inline-flex;align-items:center;gap:8px;
  font-size:14px;color:var(--ink);align-self:flex-start}
.post-more i{font-size:12px;transition:transform .2s var(--ease)}
.post-card:hover .post-more i{transform:translateX(4px)}
@media (min-width:1024px){
  .news-list{grid-template-columns:repeat(2,1fr)}
  .post-card{grid-template-columns:1fr;padding:0;overflow:hidden}
  .post-thumb{border-radius:0;aspect-ratio:16/9}
  .post-body{padding:24px}
}
@media (max-width:599px){
  .post-card{grid-template-columns:1fr;padding:0;overflow:hidden}
  .post-thumb{border-radius:0;aspect-ratio:16/9}
  .post-body{padding:20px}
}
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center;
  padding:64px 24px;border:1px dashed var(--line);border-radius:var(--r-card);
  background:var(--surface-2);color:var(--text-2);font-size:15px;
}
.empty-state i{font-size:40px;color:var(--text-3)}
@media (min-width:1024px){.empty-state{grid-column:1/-1}}

/* ---------- 价格方案 ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:32px;box-shadow:var(--s1);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.price-card:hover{border-color:rgba(18,53,44,.2);box-shadow:var(--s2)}
.price-card.is-featured{border:1px solid var(--ink);box-shadow:var(--s2);transform:translateY(-8px);position:relative}
.price-card.is-featured:hover{transform:translateY(-8px)}
.price-badge{position:absolute;top:-13px;left:32px}
.price-name{font-family:var(--font-serif);font-size:22px}
.price-desc{margin-top:10px;font-size:14px;color:var(--text-2);line-height:1.7;min-height:48px}
.price-line{height:1px;background:var(--line);margin:24px 0}
.price-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--text-2);line-height:1.6;padding:7px 0}
.price-list i{color:var(--ink);font-size:13px;margin-top:5px;flex-shrink:0}
.price-card .btn{margin-top:28px}
@media (max-width:1023px){
  .price-grid{grid-template-columns:1fr}
  .price-card.is-featured{transform:none}
  .price-card.is-featured:hover{transform:none}
}

/* ---------- FAQ ---------- */
.faq-list{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;
  text-align:left;padding:24px 4px;font-size:17px;font-weight:500;color:var(--text);
  transition:color .12s var(--ease);
}
.faq-q:hover{color:var(--ink)}
.faq-icon{position:relative;width:16px;height:16px;flex-shrink:0;transition:transform .2s var(--ease)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--ink);border-radius:1px}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{left:7px;top:0;width:2px;height:16px}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a-inner{padding:0 4px 26px;font-size:16px;line-height:1.8;color:var(--text-2);max-width:76ch}
@media (max-width:639px){
  .faq-q{font-size:16px;padding:20px 2px}
  .faq-a-inner{font-size:15px;padding-bottom:22px}
}

/* ---------- 内联 CTA 行 ---------- */
.inline-cta{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  margin-top:56px;padding:24px 28px;background:var(--surface-2);
  border:1px solid var(--line);border-radius:var(--r-card);
}
.inline-cta p{font-size:16px;color:var(--text-2)}
.inline-cta strong{color:var(--text);font-weight:600}
@media (max-width:639px){
  .inline-cta{padding:22px}
}

/* ---------- 收尾 CTA ---------- */
.final-cta{background:var(--dark);color:var(--dark-text);padding:88px 0}
.final-inner{display:flex;align-items:center;justify-content:space-between;gap:48px}
.final-inner h2{font-size:32px;line-height:1.3;color:#fff;max-width:24ch}
.final-inner p{margin-top:16px;font-size:16px;color:var(--dark-faint);max-width:46ch}
@media (max-width:767px){
  .final-cta{padding:64px 0}
  .final-inner{flex-direction:column;align-items:flex-start;gap:28px}
  .final-inner h2{font-size:24px}
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:var(--dark-faint);padding:72px 0 0;border-top:1px solid rgba(233,237,233,.08)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:48px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.footer-brand .brand-mark{background:var(--accent)}
.footer-brand span{font-family:var(--font-serif);font-size:19px;color:#fff;font-weight:600}
.footer-about{font-size:14px;line-height:1.8;max-width:34ch}
.footer-title{font-size:13px;letter-spacing:.08em;color:#fff;font-weight:600;margin-bottom:18px}
.footer-list li{margin-bottom:11px}
.footer-list a{font-size:14px;color:var(--dark-faint);transition:color .12s var(--ease)}
.footer-list a:hover{color:#fff}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14px;margin-bottom:12px;line-height:1.7}
.footer-contact i{color:var(--accent);font-size:13px;margin-top:5px;flex-shrink:0}
.footer-bottom{
  margin-top:56px;padding:24px 0;border-top:1px solid rgba(233,237,233,.1);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;
}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:599px){
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .site-footer{padding-top:56px}
}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:32px;bottom:32px;z-index:110;
  display:flex;align-items:center;gap:4px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-pill);box-shadow:var(--s3);
  padding:6px;opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .2s var(--ease),transform .2s var(--ease);
}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto}
.float-cta a{
  display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 22px;
  background:var(--accent);color:#fff;border-radius:var(--r-pill);font-size:15px;
  font-weight:500;transition:background .2s var(--ease);
}
.float-cta a:hover{background:var(--accent-hover)}
.float-close{width:36px;height:36px;display:grid;place-items:center;color:var(--text-3);
  border-radius:50%;font-size:15px;transition:color .12s var(--ease),background .12s var(--ease)}
.float-close:hover{color:var(--text);background:var(--surface-2)}

/* ---------- 移动底部 Tab ---------- */
.mobile-tabbar{display:none}
@media (max-width:1023px){
  .mobile-tabbar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:115;
    height:calc(64px + env(safe-area-inset-bottom));
    padding-bottom:env(safe-area-inset-bottom);
    background:rgba(255,255,255,.96);
    backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
    border-top:1px solid var(--line);
  }
  .tab-item{
    flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
    gap:4px;font-size:10px;color:var(--text-3);min-height:44px;
    transition:color .12s var(--ease);
  }
  .tab-item i{font-size:20px}
  .tab-item.is-active{color:var(--ink);font-weight:600}
  .float-cta{right:16px;left:16px;bottom:calc(80px + env(safe-area-inset-bottom));width:auto;justify-content:space-between}
  .float-cta a{flex:1;justify-content:center}
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px)}
.reveal.is-in{opacity:1;transform:translateY(0);transition:opacity .48s var(--ease),transform .48s var(--ease)}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}
[id]{scroll-margin-top:88px}

/* roulang page: article */
:root{
  --ink:#12352C;
  --ink-hover:#0C2A22;
  --ink-soft:#E7EEE9;
  --accent:#D2542F;
  --accent-hover:#B34A28;
  --accent-soft:#FBEDE6;
  --bg:#F6F3EC;
  --surface:#FFFFFF;
  --surface-2:#FBF9F5;
  --line:#E3DED3;
  --text:#141A17;
  --text-2:#5C6660;
  --text-3:#8C948E;
  --dark:#0F1E19;
  --dark-text:#E9EDE9;
  --dark-muted:#9AAAA2;
  --success:#2F6F5E;
  --warn:#D2A24C;
  --error:#B4372A;
  --r-card:10px;
  --r-btn:6px;
  --r-pill:999px;
  --s1:0 1px 2px rgba(15,30,25,.05);
  --s2:0 8px 24px -12px rgba(15,30,25,.14);
  --s3:0 24px 60px -32px rgba(15,30,25,.28);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --sans:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:17px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  padding-bottom:0;
}
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{margin:0;font-family:var(--serif);font-weight:600;line-height:1.25;letter-spacing:-.01em;}
p{margin:0;}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px;border-radius:4px;}
.container{max-width:1240px;margin:0 auto;padding:0 32px;width:100%;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .12s var(--ease),box-shadow .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--ink);color:#fff;box-shadow:var(--s1);}
.btn-primary:hover{background:var(--ink-hover);transform:translateY(-1px);box-shadow:var(--s2);}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--s1);}
.btn-accent{background:var(--accent);color:#fff;box-shadow:var(--s1);}
.btn-accent:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:var(--s2);}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:var(--ink-soft);transform:translateY(-1px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;}
.link-quiet{font-size:14px;color:var(--text-2);border-bottom:1px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease);}
.link-quiet:hover{color:var(--ink);border-color:var(--ink);}
.link-underline{color:var(--ink);border-bottom:1px solid var(--ink);padding-bottom:1px;transition:border-color .2s var(--ease),color .2s var(--ease);}
.link-underline:hover{color:var(--accent);border-color:var(--accent);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(246,243,236,.94);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease),height .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--s1);}
.nav-wrap{display:flex;align-items:center;gap:32px;height:var(--header-h);transition:height .2s var(--ease);}
.site-header.is-scrolled .nav-wrap{height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-family:var(--serif);font-size:19px;font-weight:600;color:var(--ink);flex-shrink:0;}
.brand-mark{
  width:32px;height:32px;border-radius:8px;background:var(--ink);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--serif);font-size:17px;line-height:1;text-transform:lowercase;
}
.brand-text{letter-spacing:-.01em;}
.nav-main{display:flex;align-items:center;gap:28px;margin-left:12px;}
.nav-link{
  position:relative;font-size:15px;color:var(--text-2);padding:6px 0;
  transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--ink);
  transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--ink);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:18px;margin-left:auto;}
.nav-icon{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--r-btn);color:var(--ink);background:var(--surface);
  transition:border-color .2s var(--ease),background-color .2s var(--ease);
}
.nav-icon:hover{border-color:var(--ink);background:var(--ink-soft);}
.scroll-progress{position:sticky;top:var(--header-h);z-index:59;height:2px;background:transparent;}
.scroll-progress span{display:block;height:2px;width:0;background:var(--ink);transition:width .1s linear;}

/* ---------- 内页头部 ---------- */
.article-hero{
  position:relative;background:var(--dark);color:var(--dark-text);overflow:hidden;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(15,30,25,.94) 0%,rgba(15,30,25,.74) 52%,rgba(15,30,25,.5) 100%),
             url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  opacity:.9;
}
.article-hero .container{position:relative;z-index:1;padding-top:64px;padding-bottom:64px;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--dark-muted);margin-bottom:22px;}
.breadcrumb a{color:var(--dark-muted);transition:color .2s var(--ease);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb .sep{color:rgba(154,170,162,.6);}
.breadcrumb .current{color:#fff;}
.article-hero h1{
  font-size:36px;line-height:1.35;max-width:860px;color:#fff;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:22px;font-size:14px;color:var(--dark-muted);}
.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;letter-spacing:.08em;
  padding:5px 12px;border-radius:var(--r-pill);border:1px solid var(--ink);color:var(--ink);
  background:var(--surface);text-transform:none;
}
.badge-light{border-color:rgba(233,237,233,.4);color:#E9EDE9;background:rgba(255,255,255,.06);}
.badge-solid{background:var(--accent);border-color:var(--accent);color:#fff;}
.meta-num{font-variant-numeric:tabular-nums;}

/* ---------- 正文布局 ---------- */
.article-shell{padding:64px 0 72px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:40px;}
.article-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--s1);padding:44px 48px;
}
.article-body{max-width:720px;margin:0 auto;font-size:17px;line-height:1.85;color:var(--text);}
.article-body>*+*{margin-top:1.25em;}
.article-body p{color:#26302B;}
.article-body h2{
  font-size:26px;line-height:1.4;margin-top:2.4em;margin-bottom:.8em;color:var(--ink);
  padding-left:14px;border-left:3px solid var(--accent);
}
.article-body h3{font-size:20px;margin-top:1.9em;margin-bottom:.6em;color:var(--ink);}
.article-body h2+h3{margin-top:1.2em;}
.article-body ul,.article-body ol{padding-left:0;}
.article-body ul li{position:relative;padding-left:22px;margin-top:.6em;}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;background:var(--ink);border-radius:2px;
}
.article-body ol{counter-reset:li;list-style:none;}
.article-body ol li{position:relative;padding-left:30px;margin-top:.6em;counter-increment:li;}
.article-body ol li::before{
  content:counter(li,decimal-leading-zero);position:absolute;left:0;top:.1em;
  font-size:14px;color:var(--ink);font-variant-numeric:tabular-nums;font-weight:600;
}
.article-body blockquote{
  margin:1.8em 0;padding:20px 24px;background:var(--surface-2);
  border-left:3px solid var(--ink);border-radius:0 var(--r-card) var(--r-card) 0;color:var(--text-2);
}
.article-body blockquote p{color:var(--text-2);}
.article-body img{width:100%;border-radius:var(--r-card);margin:1.6em 0 .6em;object-fit:cover;}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;}
.article-body a{color:var(--ink);text-decoration:underline;text-underline-offset:3px;transition:color .2s var(--ease);}
.article-body a:hover{color:var(--accent);}
.article-body code{
  background:var(--ink-soft);color:var(--ink-hover);padding:2px 6px;border-radius:4px;
  font-size:14px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.article-body pre{
  background:var(--dark);color:var(--dark-text);padding:20px 22px;border-radius:var(--r-card);
  overflow-x:auto;line-height:1.7;font-size:14px;
}
.article-body pre code{background:none;color:inherit;padding:0;}
.article-body hr{border:none;border-top:1px solid var(--line);margin:2.4em 0;}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;}
.article-body th{background:var(--surface-2);color:var(--ink);}

.article-foot{
  max-width:720px;margin:40px auto 0;padding-top:28px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;gap:16px;
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  font-size:12px;letter-spacing:.08em;color:var(--text-2);background:var(--surface-2);
  border:1px solid var(--line);border-radius:var(--r-pill);padding:6px 14px;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.tag:hover{border-color:var(--ink);color:var(--ink);}
.article-foot .btn{margin-left:auto;}

.empty-state{
  max-width:720px;margin:0 auto;padding:56px 32px;text-align:center;
  background:var(--surface-2);border:1px dashed var(--line);border-radius:var(--r-card);
}
.empty-state i{font-size:40px;color:var(--text-3);}
.empty-state h2{font-size:22px;margin:18px 0 10px;color:var(--ink);}
.empty-state p{color:var(--text-2);font-size:15px;margin-bottom:22px;}

/* ---------- 相关推荐 ---------- */
.related{padding:0 0 80px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px;}
.section-tag{font-size:12px;letter-spacing:.08em;color:var(--ink);text-transform:uppercase;}
.section-head h2{font-size:30px;margin-top:10px;}
.section-head .lead{font-size:15px;color:var(--text-2);margin-top:8px;max-width:520px;}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--s1);display:flex;flex-direction:column;
  transition:box-shadow .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.card:hover{box-shadow:var(--s2);border-color:rgba(18,53,44,.3);transform:translateY(-2px);}
.card-thumb{position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--ink-soft);}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.card:hover .card-thumb img{transform:scale(1.03);}
.card-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:18px;line-height:1.45;color:var(--ink);}
.card-body p{font-size:14px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-meta{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--text-3);margin-top:auto;letter-spacing:.04em;}
.card-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--text-3);}

/* ---------- 内联 CTA ---------- */
.inline-cta{
  display:flex;flex-wrap:wrap;align-items:center;gap:20px;justify-content:space-between;
  padding:26px 32px;border:1px solid var(--line);border-left:3px solid var(--accent);
  border-radius:var(--r-card);background:var(--surface);box-shadow:var(--s1);
}
.inline-cta p{font-size:15px;color:var(--text-2);}
.inline-cta strong{font-family:var(--serif);font-size:19px;color:var(--ink);display:block;margin-bottom:4px;}

/* ---------- 收尾 CTA ---------- */
.final-cta{background:var(--dark);color:var(--dark-text);padding:64px 0;}
.final-cta .inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:32px;}
.final-cta h2{font-size:32px;color:#fff;max-width:620px;}
.final-cta p{color:var(--dark-muted);font-size:15px;margin-top:12px;max-width:560px;}
.final-cta .actions{display:flex;flex-wrap:wrap;gap:14px;}
.btn-outline-light{background:transparent;border:1px solid rgba(233,237,233,.5);color:#E9EDE9;}
.btn-outline-light:hover{border-color:#fff;background:rgba(255,255,255,.08);transform:translateY(-1px);}

/* ---------- 联系表单 ---------- */
.contact-strip{padding:80px 0;}
.contact-box{
  display:grid;grid-template-columns:1fr 1fr;gap:0;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--s1);
}
.contact-visual{position:relative;min-height:320px;background:var(--ink-soft);}
.contact-visual img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;}
.contact-form{padding:40px;}
.contact-form h2{font-size:26px;margin-bottom:10px;color:var(--ink);}
.contact-form .hint{font-size:14px;color:var(--text-2);margin-bottom:26px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px;letter-spacing:.02em;}
.field input,.field textarea{
  width:100%;height:48px;padding:0 14px;background:var(--surface-2);
  border:1px solid var(--line);border-radius:var(--r-btn);transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.field textarea{height:104px;padding:12px 14px;resize:vertical;line-height:1.6;}
.field input:focus,.field textarea:focus{
  outline:none;background:#fff;border-color:var(--ink);box-shadow:0 0 0 3px rgba(18,53,44,.12);
}
.field .err{display:none;font-size:12px;color:var(--error);margin-top:6px;}
.field.has-error input,.field.has-error textarea{border-color:var(--error);}
.field.has-error .err{display:block;}
.form-note{font-size:12px;color:var(--text-3);margin-top:14px;}
.spinner{
  width:16px;height:16px;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;
  border-radius:50%;animation:spin .7s linear infinite;display:none;
}
.btn.is-loading .spinner{display:inline-block;}
.btn.is-loading{opacity:.85;pointer-events:none;}
@keyframes spin{to{transform:rotate(360deg);}}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:var(--dark-text);padding:72px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-size:19px;color:#fff;margin-bottom:16px;}
.footer-brand .brand-mark{background:var(--accent);}
.footer-about{font-size:14px;color:var(--dark-muted);line-height:1.8;max-width:320px;}
.footer-title{font-size:14px;color:#fff;letter-spacing:.04em;margin-bottom:18px;font-family:var(--sans);font-weight:600;}
.footer-list li{margin-bottom:12px;}
.footer-list a{font-size:14px;color:var(--dark-muted);transition:color .2s var(--ease);}
.footer-list a:hover{color:#fff;}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--dark-muted);margin-bottom:14px;line-height:1.7;}
.footer-contact i{color:var(--accent);margin-top:4px;font-size:14px;}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(233,237,233,.14);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:var(--dark-muted);
}

/* ---------- 浮动 CTA 与底部 Tab ---------- */
.float-cta{
  position:fixed;right:32px;bottom:32px;z-index:70;
  display:inline-flex;align-items:center;gap:10px;height:52px;padding:0 22px;
  background:var(--accent);color:#fff;border-radius:var(--r-pill);box-shadow:var(--s3);
  font-size:15px;font-weight:600;cursor:pointer;
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .3s var(--ease),transform .3s var(--ease),background-color .2s var(--ease);
}
.float-cta.is-show{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta:hover{background:var(--accent-hover);}
.float-cta .close{
  border:none;background:rgba(255,255,255,.22);color:#fff;width:22px;height:22px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;font-size:11px;cursor:pointer;padding:0;
  transition:background-color .2s var(--ease);
}
.float-cta .close:hover{background:rgba(255,255,255,.4);}
.mobile-tabs{display:none;}

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

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:1023px){
  .nav-main,.nav-actions .link-quiet{display:none;}
  .nav-actions{gap:12px;}
  .nav-icon{display:inline-flex;}
  .article-card{padding:32px 28px;}
  .contact-box{grid-template-columns:1fr;}
  .contact-visual{min-height:220px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .article-hero .container{padding-top:44px;padding-bottom:44px;}
  .article-hero h1{font-size:26px;}
  .article-shell{padding:44px 0 56px;}
  .article-card{padding:24px 20px;border-radius:var(--r-card);}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{font-size:22px;}
  .article-body h3{font-size:18px;}
  .section-head{flex-direction:column;align-items:flex-start;}
  .section-head h2{font-size:24px;}
  .related-grid{grid-template-columns:1fr;}
  .final-cta{padding:48px 0;}
  .final-cta h2{font-size:24px;}
  .contact-strip{padding:56px 0;}
  .contact-form{padding:28px 20px;}
  .inline-cta{padding:22px 20px;}
  .article-foot .btn{margin-left:0;width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{justify-content:flex-start;}
  .float-cta{
    right:16px;left:16px;bottom:calc(64px + env(safe-area-inset-bottom) + 16px);
    width:calc(100% - 32px);justify-content:center;
  }
  .mobile-tabs{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:65;
    height:calc(64px + env(safe-area-inset-bottom));
    padding-bottom:env(safe-area-inset-bottom);
    background:rgba(255,255,255,.96);backdrop-filter:blur(10px);
    border-top:1px solid var(--line);
  }
  .mobile-tabs a{
    flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
    font-size:10px;color:var(--text-3);min-width:44px;
    transition:color .2s var(--ease);
  }
  .mobile-tabs a i{font-size:20px;}
  .mobile-tabs a.is-active{color:var(--ink);font-weight:600;}
  body{padding-bottom:84px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --ink:#12352C;
  --ink-hover:#0C2A22;
  --ink-soft:#E7EEE9;
  --accent:#D2542F;
  --accent-hover:#B34A28;
  --accent-soft:#FBEDE6;
  --bg:#F6F3EC;
  --surface:#FFFFFF;
  --surface-2:#FBF9F5;
  --line:#E3DED3;
  --text:#141A17;
  --text-2:#5C6660;
  --text-3:#8C948E;
  --dark:#0F1E19;
  --dark-text:#E9EDE9;
  --dark-muted:#9AAAA2;
  --ok:#2F6F5E;
  --warn:#D2A24C;
  --err:#B4372A;
  --r-card:10px;
  --r-btn:6px;
  --r-pill:999px;
  --s1:0 1px 2px rgba(15,30,25,.05);
  --s2:0 8px 24px -12px rgba(15,30,25,.14);
  --s3:0 24px 60px -32px rgba(15,30,25,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-sans:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);font-weight:600;letter-spacing:-.01em;line-height:1.25}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px}
@media (min-width:1440px){.container{max-width:1320px}}
@media (max-width:1023px){.container{padding:0 24px}}
@media (max-width:639px){.container{padding:0 20px}}

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(246,243,236,.94);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--s1)}
.nav-wrap{display:flex;align-items:center;gap:28px;height:72px;transition:height .2s var(--ease);position:relative}
.site-header.is-scrolled .nav-wrap{height:64px}
.scroll-progress{position:absolute;left:0;bottom:-1px;height:2px;width:0;background:var(--accent);transition:width .1s linear}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:32px;height:32px;border-radius:8px;
  background:var(--ink);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--font-serif);font-size:18px;font-weight:600;
  letter-spacing:0;transition:background .2s var(--ease);
}
.brand:hover .brand-mark{background:var(--ink-hover)}
.brand-text{font-family:var(--font-serif);font-size:19px;font-weight:600;color:var(--ink);letter-spacing:.01em}
.nav-main{display:flex;align-items:center;gap:2px;margin:0 auto}
.nav-link{
  padding:9px 13px;border-radius:var(--r-btn);
  font-size:15px;color:var(--text-2);
  transition:color .2s var(--ease),background .2s var(--ease);
  white-space:nowrap;
}
.nav-link:hover{color:var(--ink);background:var(--ink-soft)}
.nav-link.is-active{color:var(--ink);font-weight:600;background:var(--ink-soft)}
.nav-actions{display:flex;align-items:center;gap:16px;flex:0 0 auto}
.nav-icon{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);
  align-items:center;justify-content:center;color:var(--ink);font-size:20px;
  transition:background .2s var(--ease);
}
.nav-icon:hover{background:var(--ink-soft)}
@media (max-width:1023px){
  .nav-main,.nav-actions{display:none}
  .nav-icon{display:inline-flex;margin-left:auto}
  .nav-wrap{height:56px;gap:12px}
  .site-header.is-scrolled .nav-wrap{height:56px}
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;line-height:1;
  transition:transform .12s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--s1)}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:var(--s2)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--ink)}
.btn-ghost:hover{background:var(--ink-soft);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{background:var(--ink-soft);transform:translateY(-1px)}
.btn-on-dark{background:var(--accent);color:#fff}
.btn-on-dark:hover{background:var(--accent-hover);transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 18px;font-size:15px}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}
.link-quiet{font-size:15px;color:var(--text-2);text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--line);transition:color .2s var(--ease),text-decoration-color .2s var(--ease)}
.link-quiet:hover{color:var(--ink);text-decoration-color:var(--accent)}
.link-arrow{font-size:15px;font-weight:600;color:var(--ink);display:inline-flex;align-items:center;gap:8px;white-space:nowrap;border-bottom:1px solid var(--line);padding-bottom:4px;transition:color .2s var(--ease),border-color .2s var(--ease)}
.link-arrow i{font-size:13px;transition:transform .2s var(--ease)}
.link-arrow:hover{color:var(--accent);border-color:var(--accent)}
.link-arrow:hover i{transform:translateX(3px)}

/* ============ 首屏 ============ */
.hero{padding:72px 0 56px;position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center}
.hero-label{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.08em;color:var(--ink);background:var(--ink-soft);border-radius:var(--r-pill);padding:6px 14px;font-weight:600}
.hero h1{font-size:44px;margin:20px 0 18px;max-width:15em}
.hero-lead{font-size:18px;color:var(--text-2);max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-note{margin-top:18px;font-size:12px;letter-spacing:.04em;color:var(--text-3)}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-card);box-shadow:var(--s2);
  transition:transform .48s var(--ease);
}
.hero-media:hover img{transform:scale(1.03)}
.hero-media::after{
  content:"";position:absolute;inset:auto -14px -14px auto;
  width:58%;height:52%;border:1px solid var(--ink);border-radius:var(--r-card);
  opacity:.35;pointer-events:none;
}
@media (max-width:1023px){
  .hero{padding:48px 0 40px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero h1{font-size:32px}
  .hero-lead{font-size:16px}
}

/* ============ 信任条 ============ */
.trust{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--surface-2)}
.trust-row{display:flex;gap:48px;padding:24px 0;overflow-x:auto;scrollbar-width:none}
.trust-row::-webkit-scrollbar{display:none}
.trust-item{display:flex;align-items:baseline;gap:10px;white-space:nowrap;font-size:14px;color:var(--text-2)}
.trust-item b{font-size:24px;color:var(--ink);font-variant-numeric:tabular-nums;font-weight:600;font-family:var(--font-serif)}

/* ============ 板块通用 ============ */
.section{padding:112px 0}
.section-alt{background:var(--surface-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
@media (max-width:1023px){.section{padding:80px 0}}
@media (max-width:639px){.section{padding:64px 0}}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:48px}
.sec-label{display:inline-block;font-size:12px;letter-spacing:.08em;color:var(--ink);font-weight:600;margin-bottom:12px}
.sec-head h2{font-size:36px;max-width:22em}
.sec-lead{margin-top:12px;font-size:16px;color:var(--text-2);max-width:40em}
@media (max-width:1023px){
  .sec-head{flex-direction:column;align-items:flex-start;gap:20px;margin-bottom:36px}
  .sec-head h2{font-size:26px}
}

/* ============ 入口卡片 ============ */
.entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.entry-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 24px;box-shadow:var(--s1);
  transition:box-shadow .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
  display:flex;flex-direction:column;gap:12px;
}
.entry-card:hover{box-shadow:var(--s2);border-color:var(--ink);transform:translateY(-3px)}
.entry-icon{
  width:44px;height:44px;border-radius:10px;background:var(--ink-soft);color:var(--ink);
  display:flex;align-items:center;justify-content:center;font-size:18px;
}
.entry-card h3{font-size:20px}
.entry-card p{font-size:15px;color:var(--text-2)}
.entry-tag{align-self:flex-start;font-size:12px;letter-spacing:.08em;color:var(--ink);border:1px solid var(--ink);border-radius:var(--r-pill);padding:4px 12px}
@media (max-width:1023px){.entry-grid{grid-template-columns:1fr;gap:16px}}

/* ============ 时间线 ============ */
.timeline{position:relative;margin-top:8px}
.timeline::before{content:"";position:absolute;left:50%;top:12px;bottom:12px;width:1px;background:var(--line);transform:translateX(-.5px)}
.tl-item{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding-bottom:72px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:50%;top:44px;
  width:11px;height:11px;margin-left:-5.5px;border-radius:50%;
  background:var(--ink);box-shadow:0 0 0 5px var(--bg);z-index:2;
}
.tl-item:nth-child(even) .tl-media{grid-column:2;grid-row:1}
.tl-item:nth-child(even) .tl-body{grid-column:1;grid-row:1}
.tl-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-card);box-shadow:var(--s1);transition:transform .48s var(--ease),box-shadow .2s var(--ease)}
.tl-item:hover .tl-media img{transform:scale(1.02);box-shadow:var(--s2)}
.tl-num{display:block;font-family:var(--font-serif);font-size:14px;letter-spacing:.08em;color:var(--accent);font-variant-numeric:tabular-nums;font-weight:600}
.tl-body h3{font-size:22px;margin:10px 0 12px}
.tl-body p{font-size:16px;color:var(--text-2);max-width:34em}
.tl-points{margin-top:16px;display:flex;flex-direction:column;gap:8px}
.tl-points li{position:relative;padding-left:18px;font-size:15px;color:var(--text-2);line-height:1.6}
.tl-points li::before{content:"";position:absolute;left:0;top:.65em;width:7px;height:7px;background:var(--ink);border-radius:2px}
@media (max-width:1023px){
  .tl-item{grid-template-columns:1fr;gap:20px;padding-bottom:48px;padding-left:34px}
  .timeline::before{left:9px;transform:none}
  .tl-item::before{left:9px;margin-left:-5.5px;top:14px}
  .tl-item:nth-child(even) .tl-media{grid-column:1;grid-row:auto}
  .tl-item:nth-child(even) .tl-body{grid-column:1;grid-row:auto}
  .tl-body h3{font-size:19px}
}

/* ============ 内联 CTA 行 ============ */
.inline-cta{
  margin-top:64px;display:flex;align-items:center;justify-content:space-between;gap:24px;
  background:var(--ink-soft);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 32px;
}
.inline-cta p{font-family:var(--font-serif);font-size:20px;color:var(--ink)}
@media (max-width:767px){
  .inline-cta{flex-direction:column;align-items:flex-start;padding:24px 20px;margin-top:40px}
  .inline-cta .btn{width:100%}
}

/* ============ 排查列表 ============ */
.trouble-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.trouble-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--s1);transition:box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.trouble-card:hover{box-shadow:var(--s2);border-color:var(--ink)}
.trouble-card h3{font-size:18px;display:flex;align-items:center;gap:10px}
.trouble-card h3 i{color:var(--accent);font-size:15px}
.trouble-card .st{font-size:12px;letter-spacing:.08em;color:var(--warn);border:1px solid var(--warn);border-radius:var(--r-pill);padding:3px 10px;margin-left:auto}
.trouble-head{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.trouble-card p{font-size:15px;color:var(--text-2)}
@media (max-width:767px){.trouble-grid{grid-template-columns:1fr}}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;font-size:17px;font-weight:600;color:var(--text);cursor:pointer;
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-family:var(--font-serif);font-size:24px;line-height:1;color:var(--ink);
  transition:transform .2s var(--ease),color .2s var(--ease);flex:0 0 auto;
}
.faq-item[open] summary{color:var(--ink)}
.faq-item[open] summary::after{transform:rotate(45deg);color:var(--accent)}
.faq-item summary:hover{color:var(--ink)}
.faq-answer{padding:0 4px 24px;max-width:52em}
.faq-answer p{font-size:16px;line-height:1.8;color:var(--text-2)}

/* ============ 深色收尾 ============ */
.cta-dark{background:var(--dark);color:var(--dark-text);padding:72px 0}
.cta-dark .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px}
.cta-dark h2{font-size:32px;color:#fff;max-width:20em}
.cta-dark p{margin-top:12px;font-size:15px;color:var(--dark-muted);max-width:32em}
.cta-dark .cta-actions{display:flex;gap:14px;flex-wrap:wrap}
@media (max-width:1023px){
  .cta-dark{padding:56px 0}
  .cta-dark .cta-inner{flex-direction:column;align-items:flex-start;gap:24px}
  .cta-dark h2{font-size:24px}
}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:var(--dark-text);padding:64px 0 28px;border-top:1px solid rgba(255,255,255,.06)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;font-family:var(--font-serif);font-size:18px;color:#fff}
.footer-brand .brand-mark{background:var(--accent)}
.footer-about{margin-top:14px;font-size:14px;line-height:1.75;color:var(--dark-muted);max-width:26em}
.footer-title{font-family:var(--font-sans);font-size:13px;letter-spacing:.08em;color:#fff;font-weight:600;margin-bottom:16px}
.footer-list li{margin-bottom:10px}
.footer-list a{font-size:14px;color:var(--dark-muted);transition:color .2s var(--ease)}
.footer-list a:hover{color:#fff}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--dark-muted);margin-bottom:12px;line-height:1.6}
.footer-contact i{color:var(--accent);margin-top:4px;font-size:14px}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--dark-muted);
  font-variant-numeric:tabular-nums;
}
@media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:639px){.footer-grid{grid-template-columns:1fr;gap:28px}.site-footer{padding:48px 0 24px}}

/* ============ 移动底部 Tab ============ */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  display:none;height:64px;padding-bottom:env(safe-area-inset-bottom);
  background:rgba(255,255,255,.97);backdrop-filter:blur(12px);
  border-top:1px solid var(--line);
}
.tab-item{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  color:var(--text-3);font-size:10px;letter-spacing:.02em;min-height:44px;
  transition:color .2s var(--ease);
}
.tab-item i{font-size:22px;line-height:1}
.tab-item.is-active{color:var(--ink);font-weight:600}
.tab-item:hover{color:var(--ink)}
@media (max-width:1023px){
  .tabbar{display:flex}
  body{padding-bottom:calc(84px + env(safe-area-inset-bottom))}
}

/* ============ 浮动 CTA ============ */
.fab{
  position:fixed;right:32px;bottom:32px;z-index:95;
  display:flex;align-items:center;gap:6px;
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .2s var(--ease),transform .2s var(--ease);
}
.fab.is-visible{opacity:1;transform:none;pointer-events:auto}
.fab-main{
  display:inline-flex;align-items:center;gap:9px;height:48px;padding:0 22px;border-radius:var(--r-pill);
  background:var(--accent);color:#fff;font-size:15px;font-weight:600;box-shadow:var(--s3);
  transition:background .2s var(--ease),transform .12s var(--ease);
}
.fab-main:hover{background:var(--accent-hover);transform:translateY(-1px)}
.fab-close{
  width:32px;height:32px;border-radius:50%;background:var(--surface);color:var(--text-3);
  border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center;font-size:13px;
  box-shadow:var(--s1);transition:color .2s var(--ease),border-color .2s var(--ease);
}
.fab-close:hover{color:var(--ink);border-color:var(--ink)}
@media (max-width:1023px){
  .fab{
    left:16px;right:16px;bottom:calc(80px + env(safe-area-inset-bottom));
    width:calc(100% - 32px);justify-content:center;
  }
  .fab-main{flex:1;justify-content:center}
}

/* ============ 入场动画 ============ */
.reveal{opacity:0;transform:translateY(12px)}
.reveal.is-in{opacity:1;transform:none;transition:opacity .48s var(--ease),transform .48s var(--ease)}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}
:target{scroll-margin-top:88px}
section[id]{scroll-margin-top:88px}

/* roulang page: category2 */
:root{
  --ink:#12352C;
  --ink-hover:#0C2A22;
  --ink-soft:#E7EEE9;
  --accent:#D2542F;
  --accent-hover:#B34A28;
  --accent-soft:#FBEDE6;
  --bg:#F6F3EC;
  --surface:#FFFFFF;
  --surface-2:#FBF9F5;
  --line:#E3DED3;
  --text:#141A17;
  --text-2:#5C6660;
  --text-3:#8C948E;
  --dark:#0F1E19;
  --dark-text:#E9EDE9;
  --dark-muted:#9AAAA2;
  --ok:#2F6F5E;
  --warn:#D2A24C;
  --err:#B4372A;
  --r-card:10px;
  --r-btn:6px;
  --r-pill:999px;
  --s1:0 1px 2px rgba(15,30,25,.05);
  --s2:0 8px 24px -12px rgba(15,30,25,.14);
  --s3:0 24px 60px -32px rgba(15,30,25,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-sans:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --font-num:"Inter","SFMono-Regular",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  padding-bottom:84px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);font-weight:600;letter-spacing:-.01em;line-height:1.25;color:var(--ink)}
p{margin:0}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px;border-radius:4px}
::selection{background:var(--ink-soft);color:var(--ink)}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
@media(min-width:1024px){.container{padding:0 32px}}
@media(min-width:1440px){.container{max-width:1320px}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(246,243,236,.94);
  -webkit-backdrop-filter:saturate(160%) blur(10px);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--s1)}
.nav-wrap{display:flex;align-items:center;gap:16px;height:56px;position:relative;transition:height .2s var(--ease)}
@media(min-width:1024px){.nav-wrap{height:72px;gap:24px}}
.site-header.is-scrolled .nav-wrap{height:56px}
@media(min-width:1024px){.site-header.is-scrolled .nav-wrap{height:64px}}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-serif);font-weight:600;font-size:18px;color:var(--ink);white-space:nowrap}
.brand-mark{
  width:32px;height:32px;border-radius:8px;background:var(--ink);color:#fff;
  display:grid;place-items:center;font-family:var(--font-sans);font-size:17px;font-weight:700;line-height:1;
  flex:0 0 auto;
}
.nav-main{display:none}
@media(min-width:1024px){
  .nav-main{display:flex;align-items:center;gap:2px;margin-left:8px}
}
.nav-link{
  display:inline-flex;align-items:center;height:36px;padding:0 12px;border-radius:var(--r-btn);
  font-size:15px;color:var(--text-2);transition:color .12s var(--ease),background-color .12s var(--ease);
}
.nav-link:hover{color:var(--ink);background:var(--ink-soft)}
.nav-link.is-active{color:var(--ink);font-weight:600;background:var(--ink-soft)}
.nav-actions{display:none}
@media(min-width:1024px){
  .nav-actions{display:flex;align-items:center;gap:16px;margin-left:auto}
}
.nav-icon{
  margin-left:auto;display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--r-btn);color:var(--ink);font-size:18px;
  transition:background-color .12s var(--ease);
}
.nav-icon:hover{background:var(--ink-soft)}
@media(min-width:1024px){.nav-icon{display:none}}
.scroll-progress{
  position:absolute;left:0;bottom:-1px;height:2px;width:0;
  background:var(--ink);transition:width .08s linear;
}

/* ---------- 按钮 / 链接 / 徽章 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:0;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background-color .12s var(--ease),color .12s var(--ease),border-color .12s var(--ease),transform .12s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--ink-hover);transform:translateY(-1px);box-shadow:var(--s2)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:var(--s2)}
.btn-accent:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--ink-soft);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{background:#F1EFE8;transform:translateY(-1px)}
.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}
.link-quiet{
  font-size:14px;color:var(--text-2);border-bottom:1px solid transparent;
  padding-bottom:2px;transition:color .12s var(--ease),border-color .12s var(--ease);
}
.link-quiet:hover{color:var(--accent);border-color:var(--accent)}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink);
  border-bottom:1px solid rgba(18,53,44,.35);padding-bottom:2px;
  transition:color .12s var(--ease),border-color .12s var(--ease);
}
.link-more:hover{color:var(--accent);border-color:var(--accent)}
.link-more i{font-size:12px;transition:transform .12s var(--ease)}
.link-more:hover i{transform:translateX(3px)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;font-weight:600;color:var(--ink);
  text-transform:uppercase;
}
.eyebrow::before{content:"";width:20px;height:2px;background:var(--accent);display:block}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.08em;line-height:1.6;
  border:1px solid rgba(18,53,44,.3);color:var(--ink);background:transparent;
}
.badge-solid{background:var(--accent);color:#fff;border-color:var(--accent)}
.badge-soft{background:var(--ink-soft);border-color:transparent;color:var(--ink)}

/* ---------- 通用板块 ---------- */
.section{padding:64px 0}
@media(min-width:640px){.section{padding:80px 0}}
@media(min-width:1024px){.section{padding:112px 0}}
.section-tight{padding:48px 0}
@media(min-width:1024px){.section-tight{padding:64px 0}}
.section-alt{background:var(--surface-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{
  display:flex;flex-direction:column;gap:16px;
  margin-bottom:32px;
}
@media(min-width:768px){
  .section-head{flex-direction:row;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:48px}
}
.section-head h2{font-size:26px;margin-top:12px}
@media(min-width:1024px){.section-head h2{font-size:36px}}
.section-head .lead{font-size:15px;color:var(--text-2);max-width:560px;margin-top:10px}
.section-head .head-action{flex:0 0 auto;padding-bottom:6px}

/* ---------- 首屏 ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background-image:linear-gradient(102deg,rgba(246,243,236,.97) 0%,rgba(246,243,236,.9) 46%,rgba(246,243,236,.72) 100%),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center right;
  border-bottom:1px solid var(--line);
}
.page-hero::after{
  content:"";position:absolute;inset:auto 0 0 0;height:1px;background:var(--line);
}
.hero-inner{
  position:relative;z-index:2;
  padding:44px 0 56px;
  display:grid;gap:40px;
}
@media(min-width:1024px){
  .hero-inner{padding:72px 0 88px;grid-template-columns:1.05fr .95fr;align-items:center;gap:56px}
}
.hero-copy .eyebrow{margin-bottom:16px}
.hero-copy h1{
  font-size:28px;line-height:1.3;
}
@media(min-width:1024px){.hero-copy h1{font-size:40px;line-height:1.24}}
.hero-sub{
  margin-top:18px;font-size:16px;color:var(--text-2);max-width:34em;
}
@media(min-width:1024px){.hero-sub{font-size:17px}}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-note{
  margin-top:18px;font-size:13px;color:var(--text-3);display:flex;align-items:center;gap:8px;flex-wrap:wrap;
}
.hero-note i{color:var(--ok)}
.hero-figure{position:relative}
.hero-figure .frame{
  position:absolute;inset:18px -14px -14px 18px;
  border:1px solid rgba(18,53,44,.35);border-radius:var(--r-card);z-index:0;
}
.hero-figure .shot{
  position:relative;z-index:1;border-radius:var(--r-card);overflow:hidden;
  background:var(--surface);box-shadow:var(--s2);border:1px solid var(--line);
}
.hero-figure .shot img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  transition:transform .48s var(--ease);
}
.hero-figure .shot:hover img{transform:scale(1.03)}
.hero-figure figcaption{
  position:absolute;left:20px;bottom:20px;z-index:2;
  background:rgba(255,255,255,.94);border:1px solid var(--line);border-radius:var(--r-btn);
  padding:10px 14px;font-size:13px;color:var(--text-2);box-shadow:var(--s1);
  display:flex;align-items:center;gap:8px;
}
.hero-figure figcaption i{color:var(--accent)}

/* ---------- 指标带 ---------- */
.metrics{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.metric-grid{display:grid;grid-template-columns:repeat(2,1fr)}
@media(min-width:768px){.metric-grid{grid-template-columns:repeat(4,1fr)}}
.metric{padding:24px 20px;border-top:1px solid var(--line)}
.metric:nth-child(-n+2){border-top:none}
.metric:nth-child(even){border-left:1px solid var(--line)}
@media(min-width:768px){
  .metric{padding:36px 24px;border-top:none;border-left:1px solid var(--line)}
  .metric:first-child{border-left:none}
}
.metric-num{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:30px;font-weight:700;color:var(--ink);line-height:1.1;letter-spacing:-.02em;
}
@media(min-width:1024px){.metric-num{font-size:38px}}
.metric-num span{font-size:15px;font-weight:600;margin-left:4px;color:var(--text-2)}
.metric-label{margin-top:10px;font-size:14px;font-weight:600;color:var(--text)}
.metric-desc{margin-top:4px;font-size:13px;color:var(--text-3);line-height:1.65}

/* ---------- 不对称卡片网格 ---------- */
.split-grid{display:grid;gap:20px}
@media(min-width:1024px){
  .split-grid{grid-template-columns:repeat(12,1fr);gap:24px}
  .card-wide{grid-column:span 7}
  .card-narrow{grid-column:span 5}
}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--s1);
  transition:box-shadow .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
  display:flex;flex-direction:column;gap:14px;
}
@media(min-width:1024px){.card{padding:28px}}
.card:hover{box-shadow:var(--s2);border-color:rgba(18,53,44,.28);transform:translateY(-2px)}
.card-icon{
  width:44px;height:44px;border-radius:var(--r-btn);background:var(--ink-soft);color:var(--ink);
  display:grid;place-items:center;font-size:19px;flex:0 0 auto;
}
.card-icon.is-accent{background:var(--accent-soft);color:var(--accent)}
.card h3{font-size:19px;line-height:1.35}
.card p{font-size:15px;color:var(--text-2)}
.card-media{
  border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:var(--surface-2);
}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .48s var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-list{margin-top:2px;display:flex;flex-direction:column;gap:8px}
.card-list li{
  display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.65;
}
.card-list li i{color:var(--ok);font-size:12px;margin-top:6px;flex:0 0 auto}
.card-foot{margin-top:auto;padding-top:6px}
.card-hero-row{display:flex;gap:16px;align-items:flex-start}

/* ---------- 流程时间线 ---------- */
.flow-layout{display:grid;gap:40px}
@media(min-width:1024px){
  .flow-layout{grid-template-columns:.92fr 1.08fr;gap:64px;align-items:start}
}
.flow-visual{
  border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--s2);background:var(--surface);
}
.flow-visual img{width:100%;aspect-ratio:4/3;object-fit:cover}
.flow-visual .visual-tag{
  padding:16px 20px;display:flex;align-items:center;gap:10px;
  font-size:13px;color:var(--text-2);border-top:1px solid var(--line);background:var(--surface-2);
}
.flow-visual .visual-tag i{color:var(--accent)}
.timeline{position:relative;padding-left:34px}
.timeline::before{
  content:"";position:absolute;left:11px;top:8px;bottom:14px;width:1px;background:var(--line);
}
.timeline-item{position:relative;padding-bottom:32px}
.timeline-item:last-child{padding-bottom:0}
.timeline-item::before{
  content:"";position:absolute;left:-29px;top:6px;width:11px;height:11px;border-radius:50%;
  background:var(--surface);border:2px solid var(--ink);
}
.timeline-item:first-child::before{background:var(--accent);border-color:var(--accent)}
.timeline-step{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:12px;letter-spacing:.08em;color:var(--accent);font-weight:700;
}
.timeline-item h3{font-size:18px;margin-top:6px}
.timeline-item p{margin-top:8px;font-size:15px;color:var(--text-2);max-width:42ch}

/* ---------- 安全清单 ---------- */
.check-layout{display:grid;gap:40px}
@media(min-width:1024px){.check-layout{grid-template-columns:1.08fr .92fr;gap:64px;align-items:center}}
.check-list{display:flex;flex-direction:column;gap:0;border-top:1px solid var(--line)}
.check-list li{
  display:flex;gap:14px;padding:18px 0;border-bottom:1px solid var(--line);
}
.check-list .mark{
  width:24px;height:24px;border-radius:50%;background:var(--ink-soft);color:var(--ink);
  display:grid;place-items:center;font-size:11px;flex:0 0 auto;margin-top:4px;
}
.check-list .item-title{font-size:16px;font-weight:600;color:var(--text)}
.check-list .item-desc{margin-top:4px;font-size:14px;color:var(--text-2);line-height:1.7}
.check-figure{
  border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--s2);
}
.check-figure img{width:100%;aspect-ratio:16/10;object-fit:cover}

/* ---------- 内联 CTA 行 ---------- */
.inline-cta{
  display:flex;flex-direction:column;gap:18px;
  background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--accent);
  border-radius:var(--r-card);padding:24px;box-shadow:var(--s1);
}
@media(min-width:768px){
  .inline-cta{flex-direction:row;align-items:center;justify-content:space-between;padding:28px 32px;gap:32px}
}
.inline-cta .cta-text strong{
  display:block;font-family:var(--font-serif);font-size:20px;color:var(--ink);font-weight:600;
}
.inline-cta .cta-text span{display:block;margin-top:6px;font-size:14px;color:var(--text-2)}
.inline-cta .cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;text-align:left;font-size:17px;font-weight:600;color:var(--text);
  transition:color .12s var(--ease);
}
.faq-q:hover{color:var(--ink)}
.faq-q .icon{
  flex:0 0 auto;width:20px;height:20px;position:relative;transition:transform .2s var(--ease);
}
.faq-q .icon::before,.faq-q .icon::after{
  content:"";position:absolute;background:var(--ink);border-radius:2px;
}
.faq-q .icon::before{left:0;top:9px;width:20px;height:2px}
.faq-q .icon::after{top:0;left:9px;width:2px;height:20px}
.faq-item.is-open .faq-q .icon{transform:rotate(45deg)}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .3s var(--ease);
}
.faq-a-inner{padding:0 0 24px;font-size:15px;line-height:1.85;color:var(--text-2);max-width:60ch}
.faq-item.is-open .faq-a{max-height:420px}

/* ---------- 深色收尾 CTA ---------- */
.dark-cta{
  background:var(--dark);color:var(--dark-text);
  padding:56px 0;
}
@media(min-width:1024px){.dark-cta{padding:72px 0}}
.dark-cta .inner{
  display:flex;flex-direction:column;gap:24px;
}
@media(min-width:768px){
  .dark-cta .inner{flex-direction:row;align-items:center;justify-content:space-between;gap:48px}
}
.dark-cta h2{color:#fff;font-size:24px;line-height:1.35}
@media(min-width:1024px){.dark-cta h2{font-size:32px}}
.dark-cta p{margin-top:10px;font-size:15px;color:var(--dark-muted);max-width:46ch}
.dark-cta .actions{display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto}
.dark-cta .fineprint{margin-top:8px;font-size:13px;color:var(--dark-muted)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:var(--dark-text);padding-top:56px}
.footer-grid{display:grid;gap:36px;padding-bottom:40px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}}
.footer-brand{
  display:flex;align-items:center;gap:10px;font-family:var(--font-serif);
  font-size:19px;font-weight:600;color:#fff;
}
.footer-brand .brand-mark{background:rgba(255,255,255,.1);color:#fff}
.footer-about{margin-top:16px;font-size:14px;color:var(--dark-muted);line-height:1.8;max-width:32ch}
.footer-title{
  font-family:var(--font-sans);font-size:13px;letter-spacing:.08em;
  color:#fff;font-weight:600;margin-bottom:16px;
}
.footer-list li+li{margin-top:10px}
.footer-list a{font-size:14px;color:var(--dark-muted);transition:color .12s var(--ease)}
.footer-list a:hover{color:#fff}
.footer-contact li{
  display:flex;gap:10px;font-size:14px;color:var(--dark-muted);line-height:1.7;
}
.footer-contact li+li{margin-top:12px}
.footer-contact i{color:var(--accent);font-size:13px;margin-top:5px;flex:0 0 auto}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0 28px;
  display:flex;flex-direction:column;gap:8px;
  font-size:13px;color:var(--dark-muted);
}
@media(min-width:768px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between}}

/* ---------- 浮动 CTA / 移动 Tab ---------- */
.float-cta{
  position:fixed;z-index:90;
  right:32px;bottom:32px;display:none;align-items:center;gap:6px;
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .2s var(--ease),transform .2s var(--ease);
}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;display:flex}
.float-cta-link{
  display:inline-flex;align-items:center;gap:8px;height:52px;padding:0 24px;
  border-radius:var(--r-pill);background:var(--accent);color:#fff;
  font-size:15px;font-weight:600;box-shadow:var(--s3);
  transition:background-color .12s var(--ease),transform .12s var(--ease);
}
.float-cta-link:hover{background:var(--accent-hover);transform:translateY(-1px)}
.float-cta-close{
  width:32px;height:32px;border-radius:50%;background:var(--surface);color:var(--text-2);
  border:1px solid var(--line);display:grid;place-items:center;font-size:12px;box-shadow:var(--s1);
  transition:color .12s var(--ease),background-color .12s var(--ease);
}
.float-cta-close:hover{color:var(--ink);background:var(--ink-soft)}
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:95;
  display:grid;grid-template-columns:repeat(4,1fr);
  height:64px;padding-bottom:env(safe-area-inset-bottom);
  background:rgba(255,255,255,.96);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-top:1px solid var(--line);
}
@media(min-width:1024px){.mobile-tabbar{display:none}}
.tab-item{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  font-size:10px;color:var(--text-3);min-width:44px;min-height:44px;
  transition:color .12s var(--ease);
}
.tab-item i{font-size:20px;line-height:1}
.tab-item:hover{color:var(--text-2)}
.tab-item.is-active{color:var(--ink);font-weight:600}
@media(min-width:1024px){
  body{padding-bottom:0}
  .float-cta{display:flex}
}
@media(max-width:1023px){
  .float-cta{
    display:flex;right:16px;left:16px;bottom:80px;justify-content:center;
  }
  .float-cta.is-visible{display:flex}
  .float-cta-link{width:100%;justify-content:center}
}

/* ---------- 入场动画 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .48s var(--ease),transform .48s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  .hero-figure .shot:hover img{transform:none}
}

/* roulang page: category3 */
:root{
  --ink:#12352C;
  --ink-hover:#0C2A22;
  --ink-soft:#E7EEE9;
  --accent:#D2542F;
  --accent-hover:#B34A28;
  --accent-soft:#FBEDE6;
  --bg:#F6F3EC;
  --surface:#FFFFFF;
  --surface-2:#FBF9F5;
  --line:#E3DED3;
  --text:#141A17;
  --text-2:#5C6660;
  --text-3:#8C948E;
  --dark:#0F1E19;
  --dark-text:#E9EDE9;
  --dark-muted:#9AAAA2;
  --ok:#2F6F5E;
  --warn:#D2A24C;
  --err:#B4372A;
  --r-card:10px;
  --r-btn:6px;
  --r-pill:999px;
  --s1:0 1px 2px rgba(15,30,25,.05);
  --s2:0 8px 24px -12px rgba(15,30,25,.14);
  --s3:0 24px 60px -32px rgba(15,30,25,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --sans:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --header-h:72px;
}
@media (max-width:1023px){
  :root{--header-h:56px;}
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding-top:var(--header-h);
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
@media (max-width:1023px){
  body{padding-bottom:84px;font-size:16px;}
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:600;letter-spacing:-.01em;line-height:1.25;}
p{margin:0;}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px;}
@media (min-width:1024px){
  .container{padding:0 32px;}
}
@media (min-width:1440px){
  .container{max-width:1320px;}
}
.section{padding:64px 0;}
@media (min-width:640px){
  .section{padding:80px 0;}
}
@media (min-width:1024px){
  .section{padding:112px 0;}
}
.section-alt{background:var(--surface-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.08em;
  font-weight:600;
  color:var(--ink);
}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:36px;}
.section-head h2{
  font-size:26px;
  margin-top:10px;
}
@media (min-width:1024px){
  .section-head h2{font-size:36px;}
}
.section-lead{
  color:var(--text-2);
  font-size:15px;
  line-height:1.7;
  margin-top:12px;
  max-width:44ch;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  white-space:nowrap;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .12s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--ink);color:#fff;box-shadow:var(--s1);}
.btn-primary:hover{background:var(--ink-hover);transform:translateY(-1px);box-shadow:var(--s2);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent;}
.btn-ghost:hover{background:var(--ink-soft);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:var(--accent-hover);transform:translateY(-1px);}
.btn-accent:active{transform:translateY(1px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--ink);
  border-bottom:1px solid rgba(18,53,44,.35);
  padding-bottom:2px;
  transition:color .12s var(--ease),border-color .12s var(--ease);
}
.text-link:hover{color:var(--accent);border-color:var(--accent);}
.link-quiet{font-size:14px;color:var(--text-2);transition:color .12s var(--ease);}
.link-quiet:hover{color:var(--ink);}
.badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:var(--r-pill);
  border:1px solid rgba(18,53,44,.35);
  color:var(--ink);
  font-size:12px;
  letter-spacing:.08em;
  font-weight:600;
}
.badge-solid{background:var(--accent);border-color:var(--accent);color:#fff;}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--s1);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.card:hover{border-color:rgba(18,53,44,.28);box-shadow:var(--s2);transform:translateY(-2px);}
.card-icon{
  width:40px;height:40px;
  border-radius:var(--r-card);
  background:var(--ink-soft);
  color:var(--ink);
  display:grid;place-items:center;
  font-size:18px;
  margin-bottom:16px;
}
.card h3{font-size:19px;margin-bottom:10px;}
.card p{color:var(--text-2);font-size:15px;line-height:1.7;}
.reveal{opacity:0;transform:translateY(12px);transition:opacity .48s var(--ease),transform .48s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
}

/* ---------- 导航 ---------- */
.scroll-progress{
  position:fixed;left:0;top:calc(var(--header-h) - 2px);
  height:2px;width:0;background:var(--accent);
  z-index:70;transition:width .1s linear;
}
.site-header{
  position:fixed;top:0;left:0;right:0;
  height:var(--header-h);
  z-index:60;
  background:rgba(246,243,236,.94);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:height .2s var(--ease),box-shadow .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--s1);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:100%;}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-size:20px;font-weight:600;color:var(--ink);}
.brand-mark{
  width:32px;height:32px;border-radius:8px;background:var(--ink);color:#fff;
  display:grid;place-items:center;font-family:var(--sans);font-size:16px;font-weight:700;
}
.nav-main{display:none;align-items:center;gap:2px;}
.nav-link{
  padding:8px 12px;border-radius:var(--r-btn);font-size:15px;color:var(--text-2);
  transition:color .12s var(--ease),background-color .12s var(--ease);
}
.nav-link:hover{color:var(--ink);background:var(--ink-soft);}
.nav-link.is-active{color:var(--ink);font-weight:600;background:var(--ink-soft);}
.nav-actions{display:none;align-items:center;gap:16px;}
.nav-icon{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--r-btn);color:var(--ink);font-size:18px;
  border:1px solid var(--line);background:var(--surface);
}
.nav-icon:hover{background:var(--ink-soft);}
@media (min-width:1024px){
  .nav-main{display:flex;}
  .nav-actions{display:flex;}
  .nav-icon{display:none;}
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-3);margin-bottom:24px;}
.breadcrumb a{color:var(--text-2);transition:color .12s var(--ease);}
.breadcrumb a:hover{color:var(--ink);}
.breadcrumb .sep{color:var(--text-3);}
.breadcrumb .current{color:var(--text-3);}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:40px 0 48px;
  background:linear-gradient(180deg,var(--surface-2) 0%,var(--bg) 100%);
  overflow:hidden;
}
@media (min-width:1024px){
  .hero{padding:56px 0 72px;}
}
.hero-grid{display:grid;gap:40px;align-items:center;}
@media (min-width:1024px){
  .hero-grid{grid-template-columns:1.05fr .95fr;gap:64px;}
}
.hero h1{font-size:28px;line-height:1.28;margin-top:12px;}
@media (min-width:1024px){
  .hero h1{font-size:40px;}
}
.hero-lead{color:var(--text-2);font-size:16px;margin-top:18px;max-width:36ch;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-note{font-size:12px;letter-spacing:.02em;color:var(--text-3);margin-top:18px;}
.hero-media{position:relative;}
.hero-media::before{
  content:"";position:absolute;top:16px;left:16px;width:100%;height:100%;
  border:1px solid rgba(18,53,44,.35);border-radius:var(--r-card);
}
.hero-media img{
  position:relative;z-index:1;
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-card);box-shadow:var(--s2);
  transition:transform .3s var(--ease);
}
.hero-media:hover img{transform:scale(1.02);}
.hero-metrics{
  display:grid;grid-template-columns:1fr;gap:20px;
  margin-top:40px;padding-top:28px;border-top:1px solid var(--line);
}
@media (min-width:640px){
  .hero-metrics{grid-template-columns:repeat(3,1fr);gap:24px;}
}
.metric-num{
  display:block;font-family:var(--serif);font-size:26px;font-weight:600;color:var(--ink);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.metric-label{display:block;font-size:14px;color:var(--text-2);margin-top:6px;line-height:1.6;}

/* ---------- 症状速查 ---------- */
.symptom-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:640px){
  .symptom-grid{grid-template-columns:1fr 1fr;}
}
@media (min-width:1024px){
  .symptom-grid{grid-template-columns:repeat(4,1fr);}
}
.symptom-grid .card p{margin-bottom:16px;}

/* ---------- 对照清单 ---------- */
.compare-grid{display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:1024px){
  .compare-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
.compare-col{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:28px;
  box-shadow:var(--s1);
}
.compare-col.is-do{border-top:3px solid var(--ink);}
.compare-col.is-help{border-top:3px solid var(--text-3);}
.compare-col h3{font-size:20px;margin-bottom:6px;}
.compare-col .col-note{font-size:14px;color:var(--text-2);margin-bottom:18px;}
.compare-item{display:flex;gap:12px;align-items:flex-start;padding:13px 0;border-bottom:1px dashed var(--line);font-size:15px;line-height:1.65;}
.compare-item:last-child{border-bottom:none;}
.compare-item i{margin-top:5px;font-size:13px;}
.compare-item .ck{color:var(--ok);}
.compare-item .no{color:var(--text-3);}
.compare-item span{color:var(--text-2);}

/* ---------- 处理步骤 ---------- */
.steps-grid{display:grid;grid-template-columns:1fr;gap:36px;align-items:center;}
@media (min-width:1024px){
  .steps-grid{grid-template-columns:1fr 1fr;gap:56px;}
}
.steps-figure{order:-1;}
@media (min-width:1024px){
  .steps-figure{order:0;}
}
.steps-figure img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-card);box-shadow:var(--s2);
}
.step{position:relative;display:grid;grid-template-columns:auto 1fr;gap:16px;padding-bottom:28px;}
.step:last-child{padding-bottom:0;}
.step:not(:last-child)::before{
  content:"";position:absolute;left:15px;top:34px;bottom:0;width:1px;background:var(--line);
}
.step-num{
  position:relative;z-index:1;
  width:32px;height:32px;border-radius:var(--r-pill);
  background:var(--ink);color:#fff;
  display:grid;place-items:center;
  font-size:13px;font-weight:600;
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:18px;margin-bottom:6px;}
.step p{font-size:15px;color:var(--text-2);}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 0;
  text-align:left;
  font-family:var(--serif);
  font-size:17px;
  font-weight:600;
  color:var(--text);
  transition:color .12s var(--ease);
}
.faq-q:hover{color:var(--ink-hover);}
.faq-icon{
  flex:0 0 auto;
  width:24px;height:24px;
  display:grid;place-items:center;
  color:var(--ink);
  font-size:14px;
  transition:transform .2s var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);}
.faq-a p{padding:0 0 22px;color:var(--text-2);font-size:16px;line-height:1.8;max-width:74ch;}
.inline-cta{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  margin-top:40px;padding:20px 24px;
  background:var(--surface-2);
  border:1px solid var(--line);
  border-left:3px solid var(--accent);
  border-radius:var(--r-card);
}
.inline-cta p{font-size:15px;color:var(--text-2);}

/* ---------- 表单 / 联系 ---------- */
.contact-grid{display:grid;grid-template-columns:1fr;gap:36px;}
@media (min-width:1024px){
  .contact-grid{grid-template-columns:.85fr 1.15fr;gap:56px;}
}
.contact-side h2{font-size:26px;margin-top:10px;}
@media (min-width:1024px){
  .contact-side h2{font-size:32px;}
}
.contact-side > p{color:var(--text-2);font-size:15px;margin-top:14px;max-width:40ch;}
.contact-list{margin-top:28px;border-top:1px solid var(--line);}
.contact-list li{display:flex;gap:12px;align-items:center;padding:14px 0;border-bottom:1px solid var(--line);font-size:15px;color:var(--text-2);}
.contact-list i{color:var(--ink);width:18px;text-align:center;}
.form-panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:28px;box-shadow:var(--s1);}
.form-row{display:grid;grid-template-columns:1fr;gap:0 20px;}
@media (min-width:640px){
  .form-row{grid-template-columns:1fr 1fr;}
}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;
  height:48px;
  padding:0 14px;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  background:#fff;
  font-family:inherit;
  font-size:15px;
  color:var(--text);
  transition:border-color .12s var(--ease),box-shadow .12s var(--ease);
}
.field textarea{height:auto;min-height:120px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--ink);box-shadow:0 0 0 3px rgba(18,53,44,.12);
}
.field-error{display:none;font-size:12px;color:var(--err);margin-top:6px;}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--err);}
.field.has-error .field-error{display:block;}
.form-note{
  display:none;
  margin-top:16px;padding:12px 16px;
  border-radius:var(--r-btn);
  background:var(--ink-soft);
  color:var(--ink);
  font-size:14px;
}
.form-note.is-visible{display:block;}
.form-foot{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:8px;}
.form-foot .btn{width:100%;}
@media (min-width:640px){
  .form-foot .btn{width:auto;}
}
.form-hint{font-size:13px;color:var(--text-3);}

/* ---------- 深色收尾 CTA ---------- */
.cta-dark{background:var(--ink);color:#E9EDE9;padding:56px 0;}
@media (min-width:1024px){
  .cta-dark{padding:72px 0;}
}
.cta-dark-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;}
.cta-dark h2{font-size:24px;color:#fff;max-width:22ch;}
@media (min-width:1024px){
  .cta-dark h2{font-size:32px;}
}
.cta-dark p{color:rgba(233,237,233,.72);font-size:15px;margin-top:12px;max-width:46ch;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:var(--dark-muted);padding:56px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px;}
@media (min-width:640px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (min-width:1024px){
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
}
.footer-brand{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-size:19px;font-weight:600;color:#fff;}
.footer-brand .brand-mark{background:#fff;color:var(--dark);}
.footer-about{margin-top:16px;font-size:14px;line-height:1.8;color:var(--dark-muted);max-width:34ch;}
.footer-title{font-size:14px;letter-spacing:.08em;color:#fff;margin-bottom:16px;font-family:var(--sans);font-weight:600;}
.footer-list li{margin-bottom:10px;}
.footer-list a{font-size:14px;color:var(--dark-muted);transition:color .12s var(--ease);}
.footer-list a:hover{color:#fff;}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14px;margin-bottom:12px;line-height:1.6;}
.footer-contact i{margin-top:4px;color:var(--accent);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;
  margin-top:40px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;color:var(--dark-muted);
}

/* ---------- 移动底部 Tab ---------- */
.mobile-tabs{
  display:none;
  position:fixed;left:0;right:0;bottom:0;
  height:64px;
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(255,255,255,.96);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-top:1px solid var(--line);
  z-index:70;
}
@media (max-width:1023px){
  .mobile-tabs{display:grid;grid-template-columns:repeat(4,1fr);}
}
.tab{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  min-height:44px;font-size:10px;color:var(--text-3);
  transition:color .12s var(--ease);
}
.tab i{font-size:22px;}
.tab.is-active{color:var(--ink);}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:32px;bottom:32px;z-index:80;
  display:flex;align-items:center;
  background:var(--ink);border-radius:var(--r-pill);
  box-shadow:var(--s3);
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .2s var(--ease),transform .2s var(--ease),background-color .2s var(--ease);
}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}
.fc-main{
  display:inline-flex;align-items:center;gap:10px;
  height:52px;padding:0 8px 0 22px;
  color:#fff;font-size:15px;font-weight:600;
}
.fc-close{
  width:34px;height:34px;margin-right:8px;
  border-radius:var(--r-pill);
  display:grid;place-items:center;
  color:rgba(255,255,255,.72);
  font-size:13px;
  transition:background-color .12s var(--ease),color .12s var(--ease);
}
.fc-close:hover{background:rgba(255,255,255,.14);color:#fff;}
@media (max-width:1023px){
  .float-cta{
    left:16px;right:16px;bottom:calc(80px + env(safe-area-inset-bottom));
    justify-content:space-between;
  }
  .fc-main{flex:1;justify-content:center;padding:0 12px;}
}
#faq,#compare,#steps,#symptoms,#contact{scroll-margin-top:88px;}

/* roulang page: category4 */
:root{
  --ink:#12352C; --ink-hover:#0C2A22; --ink-soft:#E7EEE9;
  --accent:#D2542F; --accent-hover:#B34A28; --accent-soft:#FBEDE6;
  --bg:#F6F3EC; --card:#FFFFFF; --surface:#FBF9F5; --line:#E3DED3;
  --text:#141A17; --text-2:#5C6660; --text-3:#8C948E;
  --dark:#0F1E19; --dark-text:#E9EDE9; --dark-muted:#9AAAA2;
  --ok:#2F6F5E; --warn:#D2A24C; --err:#B4372A;
  --r-card:10px; --r-btn:6px; --r-pill:999px;
  --s1:0 1px 2px rgba(15,30,25,.05);
  --s2:0 8px 24px -12px rgba(15,30,25,.14);
  --s3:0 24px 60px -32px rgba(15,30,25,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1240px;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --sans:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:var(--sans);font-size:17px;line-height:1.75;
  letter-spacing:0;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--ink);text-decoration:none;transition:color 200ms var(--ease)}
a:hover{color:var(--accent)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:600;letter-spacing:-.01em;line-height:1.25;color:var(--ink)}
p{margin:0}
::selection{background:var(--ink-soft);color:var(--ink-hover)}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 24px}}
@media(min-width:1024px){.container{padding:0 32px}}
@media(min-width:1440px){:root{--container:1320px}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(246,243,236,.94);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--line);transition:box-shadow 200ms var(--ease),height 200ms var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--s1)}
.nav-wrap{display:flex;align-items:center;gap:24px;height:72px;transition:height 200ms var(--ease)}
.site-header.is-scrolled .nav-wrap{height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:32px;height:32px;border-radius:8px;background:var(--ink);color:#fff;
  display:grid;place-items:center;font-family:var(--serif);font-size:18px;font-weight:600;
  transition:transform 200ms var(--ease),background 200ms var(--ease);
}
.brand:hover .brand-mark{background:var(--ink-hover);transform:translateY(-1px)}
.brand-text{font-family:var(--serif);font-size:20px;font-weight:600;color:var(--ink);letter-spacing:.01em}
.nav-main{display:none;align-items:center;gap:4px;margin-left:12px}
.nav-link{
  display:inline-block;padding:9px 14px;border-radius:var(--r-pill);
  font-size:15px;color:var(--text-2);transition:color 180ms var(--ease),background 180ms var(--ease);
}
.nav-link:hover{color:var(--ink);background:var(--ink-soft)}
.nav-link.is-active{color:var(--ink);background:var(--ink-soft);font-weight:600}
.nav-actions{display:none;align-items:center;gap:18px;margin-left:auto}
.link-quiet{font-size:15px;color:var(--text-2);border-bottom:1px solid transparent;padding-bottom:2px}
.link-quiet:hover{color:var(--accent);border-bottom-color:var(--accent)}
.nav-icon{
  margin-left:auto;width:44px;height:44px;display:grid;place-items:center;
  color:var(--ink);border-radius:var(--r-pill);font-size:19px;
}
.nav-icon:hover{background:var(--ink-soft)}
@media(min-width:1024px){
  .nav-main{display:flex}
  .nav-actions{display:flex}
  .nav-icon{display:none}
}
@media(max-width:1023px){
  .nav-wrap{height:56px;gap:12px}
  .site-header.is-scrolled .nav-wrap{height:56px}
}
.progress-track{position:sticky;top:0;z-index:59;height:2px;background:transparent;margin-top:-1px}
.progress-bar{height:2px;width:0;background:var(--accent);transition:width 120ms linear}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);font-size:16px;font-weight:500;
  border:1px solid transparent;transition:background 200ms var(--ease),color 200ms var(--ease),
  border-color 200ms var(--ease),transform 120ms var(--ease),box-shadow 200ms var(--ease);
  white-space:nowrap;
}
.btn-sm{height:40px;padding:0 18px;font-size:15px}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--s1)}
.btn-primary:hover{background:var(--accent-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--s2)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{background:var(--ink-soft);color:var(--ink-hover)}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;color:var(--ink);
  border-bottom:1px solid rgba(18,53,44,.35);padding-bottom:2px;transition:color 200ms var(--ease),border-color 200ms var(--ease)}
.link-arrow:hover{color:var(--accent);border-bottom-color:var(--accent)}

/* ---------- 通用板块 ---------- */
.section{padding:64px 0}
@media(min-width:768px){.section{padding:80px 0}}
@media(min-width:1024px){.section{padding:112px 0}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:40px}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.08em;color:var(--ink);
  text-transform:uppercase;margin-bottom:14px;font-weight:600;
}
.eyebrow::before{content:"";display:inline-block;width:20px;height:1px;background:var(--ink);vertical-align:4px;margin-right:10px}
.section-title{font-size:26px;line-height:1.3;max-width:22ch}
@media(min-width:1024px){.section-title{font-size:36px}}
.lead{color:var(--text-2);font-size:16px;max-width:42ch;margin-top:14px}
.badge{
  display:inline-block;padding:4px 12px;border-radius:var(--r-pill);font-size:12px;
  letter-spacing:.08em;border:1px solid var(--ink);color:var(--ink);background:transparent;
}
.badge-solid{background:var(--accent);border-color:var(--accent);color:#fff}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- 分类页首屏 ---------- */
.cat-hero{position:relative;overflow:hidden;padding:56px 0 64px;border-bottom:1px solid var(--line)}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center right;opacity:.16;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(246,243,236,.98) 0%,rgba(246,243,236,.9) 46%,rgba(246,243,236,.55) 100%);
}
.cat-hero .container{position:relative;z-index:2}
.crumb{font-size:14px;color:var(--text-3);margin-bottom:22px}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--ink)}
.crumb span{margin:0 8px;color:var(--text-3)}
.crumb .current{color:var(--text-3)}
.cat-hero h1{font-size:28px;line-height:1.3;max-width:20ch}
@media(min-width:768px){.cat-hero h1{font-size:36px}}
@media(min-width:1024px){.cat-hero{padding:88px 0 96px}.cat-hero h1{font-size:40px}}
.hero-sub{margin-top:18px;font-size:17px;color:var(--text-2);max-width:46ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-meta{display:flex;flex-wrap:wrap;gap:22px;margin-top:26px;font-size:14px;color:var(--text-3)}
.hero-meta b{font-family:var(--serif);color:var(--ink);font-size:16px;font-variant-numeric:tabular-nums;margin-right:6px}
.hero-figure{margin-top:44px;position:relative;max-width:640px}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-card);box-shadow:var(--s2)}
.hero-figure::after{
  content:"";position:absolute;left:-14px;bottom:-14px;width:120px;height:120px;
  border-left:1px solid var(--ink);border-bottom:1px solid var(--ink);opacity:.45;border-radius:2px;
}
@media(min-width:1024px){
  .cat-hero-grid{display:grid;grid-template-columns:6fr 6fr;gap:56px;align-items:center}
  .hero-figure{margin-top:0}
}

/* ---------- 筛选 chip ---------- */
.chip-row{display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;margin-bottom:34px;-webkit-overflow-scrolling:touch}
.chip-row::-webkit-scrollbar{height:4px}
.chip-row::-webkit-scrollbar-thumb{background:var(--line);border-radius:2px}
.chip{
  flex:0 0 auto;height:40px;padding:0 18px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--card);color:var(--text-2);font-size:15px;
  transition:all 200ms var(--ease);
}
.chip:hover{border-color:var(--ink);color:var(--ink)}
.chip.is-active{background:var(--ink);border-color:var(--ink);color:#fff;font-weight:500}

/* ---------- 卡片瀑布 ---------- */
.waterfall{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:640px){.waterfall{grid-template-columns:repeat(2,1fr);gap:20px}}
@media(min-width:1024px){.waterfall{grid-template-columns:repeat(3,1fr);gap:24px}}
.device-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--s1);display:flex;flex-direction:column;
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease),transform 200ms var(--ease);
}
.device-card:hover{border-color:rgba(18,53,44,.18);box-shadow:var(--s2);transform:translateY(-3px)}
.device-card figure{margin:0;overflow:hidden}
.device-card figure img{width:100%;height:210px;object-fit:cover;transition:transform 480ms var(--ease)}
.device-card.tall figure img{height:258px}
.device-card:hover figure img{transform:scale(1.03)}
.device-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.device-card h3{font-size:19px;line-height:1.4}
.device-card p{font-size:15px;color:var(--text-2);line-height:1.7}
.device-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:6px}
.device-card .badge{align-self:flex-start}
.waterfall-empty{
  display:none;padding:56px 24px;text-align:center;border:1px dashed var(--line);
  border-radius:var(--r-card);background:var(--surface);
}
.waterfall-empty i{font-size:40px;color:var(--text-3)}
.waterfall-empty p{margin:14px 0 20px;color:var(--text-2)}
.waterfall-empty.is-visible{display:block}

/* ---------- 流程步骤 ---------- */
.steps{display:grid;grid-template-columns:1fr;gap:28px}
@media(min-width:768px){.steps{grid-template-columns:repeat(2,1fr);gap:32px}}
@media(min-width:1024px){.steps{grid-template-columns:repeat(4,1fr)}}
.step{position:relative;padding-top:26px;border-top:2px solid var(--line)}
.step::before{
  content:"";position:absolute;top:-2px;left:0;width:44px;height:2px;background:var(--accent);
}
.step-num{font-family:var(--serif);font-size:15px;color:var(--accent);letter-spacing:.08em;font-variant-numeric:tabular-nums}
.step h3{font-size:19px;margin-top:10px}
.step p{margin-top:10px;color:var(--text-2);font-size:15px}

/* ---------- 内联 CTA ---------- */
.inline-cta{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
  padding:24px 26px;border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--surface);margin-top:44px;
}
.inline-cta p{font-size:16px;color:var(--text-2)}
.inline-cta strong{font-family:var(--serif);color:var(--ink);font-size:18px;display:block;margin-bottom:4px}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;text-align:left;font-size:17px;font-weight:500;color:var(--ink);
  font-family:var(--sans);
}
.faq-q:hover{color:var(--accent)}
.faq-q .faq-icon{
  flex:0 0 auto;width:22px;height:22px;display:grid;place-items:center;
  color:var(--ink);transition:transform 200ms var(--ease),color 200ms var(--ease);font-size:16px;
}
.faq-q[aria-expanded="true"] .faq-icon{transform:rotate(45deg);color:var(--accent)}
.faq-a{overflow:hidden;max-height:0;transition:max-height 300ms var(--ease)}
.faq-a-inner{padding:0 0 24px;color:var(--text-2);font-size:16px;line-height:1.8;max-width:70ch}

/* ---------- 深色收尾 ---------- */
.cta-dark{background:var(--dark);color:var(--dark-text);padding:64px 0}
@media(min-width:1024px){.cta-dark{padding:88px 0}}
.cta-dark .cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px}
.cta-dark h2{color:#fff;font-size:24px;max-width:20ch}
@media(min-width:1024px){.cta-dark h2{font-size:32px}}
.cta-dark p{color:var(--dark-muted);font-size:16px;margin-top:12px;max-width:44ch}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:var(--dark-text);padding:64px 0 28px;border-top:1px solid rgba(255,255,255,.06)}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:44px}}
.footer-brand{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-size:19px;color:#fff;margin-bottom:16px}
.footer-brand .brand-mark{background:var(--accent);color:#fff}
.footer-about{color:var(--dark-muted);font-size:15px;max-width:34ch;line-height:1.8}
.footer-title{font-family:var(--sans);font-size:14px;font-weight:600;letter-spacing:.08em;color:#fff;margin-bottom:16px}
.footer-list li{margin-bottom:11px}
.footer-list a{color:var(--dark-muted);font-size:15px}
.footer-list a:hover{color:#fff}
.footer-contact li{display:flex;gap:10px;color:var(--dark-muted);font-size:15px;margin-bottom:12px;align-items:flex-start}
.footer-contact i{color:var(--accent);margin-top:5px;font-size:14px}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  color:var(--dark-muted);font-size:14px;
}

/* ---------- 浮动 CTA / 移动 Tab ---------- */
.float-cta{
  position:fixed;right:32px;bottom:32px;z-index:70;
  display:inline-flex;align-items:center;gap:10px;height:52px;padding:0 22px;
  background:var(--accent);color:#fff;border-radius:var(--r-pill);font-size:15px;font-weight:500;
  box-shadow:var(--s3);opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity 300ms var(--ease),transform 300ms var(--ease),background 200ms var(--ease);
}
.float-cta.is-show{opacity:1;transform:translateY(0);pointer-events:auto}
.float-cta:hover{background:var(--accent-hover);color:#fff}
.float-cta .close-x{
  width:22px;height:22px;border-radius:50%;display:grid;place-items:center;
  background:rgba(255,255,255,.18);font-size:12px;
}
.float-cta .close-x:hover{background:rgba(255,255,255,.32)}
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:72;display:flex;
  background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tabbar a{
  flex:1;min-height:64px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:4px;font-size:10px;color:var(--text-3);letter-spacing:.02em;
}
.mobile-tabbar a i{font-size:20px}
.mobile-tabbar a.is-active{color:var(--ink);font-weight:600}
.mobile-tabbar a:hover{color:var(--ink)}
@media(max-width:1023px){
  body{padding-bottom:84px}
  .float-cta{right:16px;left:16px;bottom:calc(84px + env(safe-area-inset-bottom));width:calc(100% - 32px);justify-content:center}
}
@media(min-width:1024px){
  .mobile-tabbar{display:none}
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 480ms var(--ease),transform 480ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  .device-card:hover{transform:none}
  .device-card:hover figure img{transform:none}
}