/* roulang page: index */
:root{
  --ink:#10302C;
  --bamboo:#2F8F7B;
  --orange:#E86A33;
  --bg:#F7F6F2;
  --card:#FFFFFF;
  --text:#22282A;
  --muted:#6B7370;
  --line:#E6E3DB;
  --hover-bg:#F1EFE8;
  --inv:#F3F1EA;
  --inv-line:rgba(243,241,234,.20);
  --r-card:12px;
  --r-btn:6px;
  --r-input:4px;
  --sh-1:0 1px 2px rgba(16,48,44,.05);
  --sh-2:0 14px 34px -14px rgba(16,48,44,.22);
  --sec-y:112px;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",STSong,"SimSun",serif;
  --sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",Helvetica,Arial,sans-serif;
  --ease:cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body,h1,h2,h3,h4,h5,h6,p,ul,ol,li,figure,blockquote,form{margin:0;padding:0;}
ul,ol{list-style:none;}
body{
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--bamboo);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--ink);}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{font-family:var(--serif);color:var(--ink);line-height:1.25;font-weight:700;}
h1{font-size:60px;line-height:1.15;letter-spacing:-.02em;}
h2{font-size:38px;}
h3{font-size:24px;}
p{color:var(--text);}
.num,.tabular{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
:focus-visible{outline:2px solid var(--bamboo);outline-offset:2px;border-radius:2px;}
::selection{background:rgba(47,143,123,.18);}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:var(--sec-y) 0;}
.section-alt{background:#FFFFFF;}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--bamboo);font-weight:600;margin-bottom:14px;
}
.eyebrow-inv{color:rgba(243,241,234,.72);}
.lead{font-size:17px;color:var(--muted);max-width:62ch;}
.divider{height:1px;background:var(--line);border:0;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;line-height:1.2;
  transition:background-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
  text-align:center;
}
.btn-primary{background:var(--orange);color:#fff;border-color:var(--orange);}
.btn-primary:hover,.btn-primary:focus{background:#CF5A27;border-color:#CF5A27;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover,.btn-ghost:focus{background:rgba(16,48,44,.06);color:var(--ink);}
.btn-light{background:transparent;color:var(--inv);border-color:rgba(243,241,234,.45);}
.btn-light:hover,.btn-light:focus{background:rgba(243,241,234,.12);color:#fff;border-color:var(--inv);}
.btn-block{width:100%;}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--bamboo);
}
.link-arrow svg{transition:transform .22s var(--ease);}
.link-arrow:hover svg{transform:translateX(4px);}
.link-arrow:hover{color:var(--ink);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:var(--bg);
  border-bottom:1px solid var(--line);
  transition:background-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-stuck{background:rgba(247,246,242,.92);backdrop-filter:saturate(140%) blur(6px);box-shadow:0 6px 20px -16px rgba(16,48,44,.4);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;height:72px;}
.brand{display:flex;align-items:center;gap:12px;color:var(--ink);}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:34px;height:34px;border-radius:9px;background:var(--ink);color:var(--inv);
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.brand-mark svg{width:19px;height:19px;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-main{font-family:var(--serif);font-size:17px;font-weight:700;color:var(--ink);white-space:nowrap;}
.brand-sub{font-size:12px;color:var(--muted);letter-spacing:.06em;}
.main-nav{display:flex;align-items:center;gap:30px;flex:1 1 auto;justify-content:center;}
.main-nav a{
  position:relative;font-size:15px;color:var(--text);padding:26px 2px;white-space:nowrap;
  transition:color .2s var(--ease);
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:16px;height:2px;width:0;
  background:var(--ink);margin:0 auto;transition:width .24s var(--ease);
}
.main-nav a:hover{color:var(--ink);}
.main-nav a:hover::after{width:48px;}
.main-nav a.active{color:var(--ink);font-weight:600;}
.main-nav a.active::after{width:48px;}
.header-cta{flex:0 0 auto;}
.header-cta .btn{padding:11px 22px;font-size:14px;}

/* ---------- Hero ---------- */
.hero{position:relative;padding:72px 0 96px;overflow:hidden;}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(16,48,44,.055) 1px,transparent 1px);
  background-size:22px 22px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 72%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 72%);
}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.hero h1{margin-bottom:20px;max-width:16ch;}
.hero-sub{font-size:17px;color:var(--muted);max-width:44ch;margin-bottom:32px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:38px;}
.hero-trust{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:14px;color:var(--muted);}
.hero-trust span{display:inline-flex;align-items:center;gap:20px;}
.hero-trust .sep{width:1px;height:14px;background:var(--line);display:inline-block;}
.hero-visual img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-card);
  border:1px solid var(--line);box-shadow:var(--sh-1);
}
.hero-visual figcaption{font-size:13px;color:var(--muted);margin-top:12px;}

/* ---------- 平台服务 ---------- */
.service-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start;}
.panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;transition:box-shadow .25s var(--ease),transform .25s var(--ease),border-color .25s var(--ease);
}
.panel:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--bamboo);}
.panel-media{overflow:hidden;}
.panel-media img{width:100%;aspect-ratio:16/11;object-fit:cover;transition:transform .5s var(--ease);}
.panel:hover .panel-media img{transform:scale(1.03);}
.panel-body{padding:26px 26px 30px;}
.panel-body h3{margin-bottom:12px;}
.panel-body p{color:var(--muted);font-size:15px;margin-bottom:18px;}
.tick-list li{position:relative;padding-left:20px;font-size:15px;color:var(--muted);margin-bottom:10px;}
.tick-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:2px;background:var(--bamboo);
}
.service-rows{border-top:1px solid var(--line);}
.service-row{
  position:relative;display:grid;grid-template-columns:66px 1fr;gap:18px;
  padding:24px 18px 24px 20px;border-bottom:1px solid var(--line);
  transition:background-color .22s var(--ease);
}
.service-row::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:2px;height:0;background:var(--ink);
  transition:height .3s var(--ease);
}
.service-row:hover{background:var(--hover-bg);}
.service-row:hover::before{height:100%;}
.service-num{
  font-family:var(--serif);font-size:18px;color:var(--ink);font-variant-numeric:tabular-nums;
  padding-top:2px;transition:color .22s var(--ease);
}
.service-row:hover .service-num{color:var(--orange);}
.service-row h3{font-size:19px;margin-bottom:6px;}
.service-row p{font-size:15px;color:var(--muted);margin:0;}

/* ---------- 优势数据 ---------- */
.stat-band{background:var(--ink);color:var(--inv);padding:76px 0;}
.stat-band h2{color:var(--inv);font-size:30px;margin-bottom:10px;}
.stat-band .band-lead{color:rgba(243,241,234,.72);font-size:15px;max-width:56ch;margin-bottom:44px;}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.stat-item{padding:0 28px;border-left:1px solid var(--inv-line);}
.stat-item:first-child{border-left:0;padding-left:0;}
.stat-value{
  font-family:var(--serif);font-size:44px;line-height:1.1;color:#fff;
  font-variant-numeric:tabular-nums;display:flex;align-items:baseline;gap:4px;
}
.stat-value small{font-size:18px;color:var(--bamboo);}
.stat-label{font-size:13px;color:rgba(243,241,234,.70);margin-top:8px;letter-spacing:.04em;}

/* ---------- 使用场景 ---------- */
.case-stack{display:flex;flex-direction:column;gap:28px;}
.case-row{display:grid;gap:28px;}
.case-row.wide-left{grid-template-columns:7fr 5fr;}
.case-row.wide-right{grid-template-columns:5fr 7fr;}
.case-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.case-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--bamboo);}
.case-media{overflow:hidden;}
.case-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s var(--ease);}
.case-card:hover .case-media img{transform:scale(1.03);}
.case-body{padding:24px 24px 26px;display:flex;flex-direction:column;gap:12px;flex:1;}
.case-body h3{font-size:20px;}
.case-body p{font-size:15px;color:var(--muted);margin:0;}
.pill-row{display:flex;flex-wrap:wrap;gap:8px;}
.pill{
  display:inline-block;font-size:12px;padding:4px 12px;border-radius:999px;
  background:rgba(47,143,123,.10);color:var(--bamboo);font-weight:600;letter-spacing:.02em;
}
.pill-orange{background:rgba(232,106,51,.10);color:var(--orange);}
.case-strip{
  display:flex;gap:24px;overflow-x:auto;padding-bottom:8px;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
}
.case-strip::-webkit-scrollbar{height:6px;}
.case-strip::-webkit-scrollbar-thumb{background:var(--line);border-radius:999px;}
.case-strip .case-card{flex:0 0 340px;scroll-snap-align:start;}
.strip-note{font-size:13px;color:var(--muted);margin-top:14px;}

/* ---------- 组合方案 ---------- */
.plan-layout{display:grid;grid-template-columns:40% 1fr;gap:56px;align-items:start;}
.plan-head{position:sticky;top:104px;}
.plan-head h2{margin-bottom:14px;}
.plan-head p{color:var(--muted);font-size:16px;max-width:34ch;}
.plan-list{border-top:1px solid var(--line);}
.plan-block{padding:30px 0;border-bottom:1px solid var(--line);}
.plan-block h3{font-size:22px;margin-bottom:12px;display:flex;align-items:baseline;gap:14px;}
.plan-block h3 em{
  font-style:normal;font-family:var(--serif);font-size:16px;color:var(--orange);
  font-variant-numeric:tabular-nums;
}
.plan-block ul{margin-bottom:16px;}
.plan-block li{position:relative;padding-left:18px;font-size:15px;color:var(--muted);margin-bottom:8px;}
.plan-block li::before{content:"";position:absolute;left:0;top:12px;width:6px;height:6px;background:var(--ink);border-radius:1px;}

/* ---------- 最新信息 ---------- */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;}
.section-head h2{margin-bottom:8px;}
.section-head p{color:var(--muted);font-size:16px;max-width:54ch;}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.news-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);color:inherit;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--bamboo);color:inherit;}
.news-media{overflow:hidden;background:rgba(16,48,44,.04);}
.news-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .5s var(--ease);}
.news-card:hover .news-media img{transform:scale(1.03);}
.news-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.news-body h3{
  font-size:19px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body .excerpt{
  font-size:15px;color:var(--muted);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);border-top:1px solid var(--line);padding-top:14px;
}
.news-foot svg{transition:transform .22s var(--ease);color:var(--bamboo);}
.news-card:hover .news-foot svg{transform:translateX(4px);}
.empty-note{
  grid-column:1 / -1;background:var(--card);border:1px dashed var(--line);border-radius:var(--r-card);
  padding:34px 26px;text-align:center;font-size:15px;color:var(--muted);
}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:35% 1fr;gap:56px;align-items:start;}
.faq-head{position:sticky;top:104px;}
.faq-head h2{margin-bottom:14px;}
.faq-head p{color:var(--muted);font-size:16px;margin-bottom:18px;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;background:none;border:0;cursor:pointer;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;font-size:17px;font-weight:600;color:var(--ink);
  font-family:var(--sans);transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--ink);}
.faq-item.open .faq-q{color:var(--ink);}
.faq-icon{position:relative;width:16px;height:16px;flex:0 0 auto;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--bamboo);transition:transform .25s var(--ease),opacity .25s var(--ease);
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px;}
.faq-icon::after{left:7px;top:0;width:2px;height:16px;}
.faq-item.open .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease);}
.faq-a-inner{padding:0 4px 24px;font-size:15px;color:var(--muted);line-height:1.85;max-width:70ch;}

/* ---------- 联系 CTA ---------- */
.cta-band{background:var(--ink);color:var(--inv);padding:96px 0;}
.cta-grid{display:grid;grid-template-columns:45% 1fr;gap:56px;align-items:start;}
.cta-band h2{color:var(--inv);margin-bottom:16px;font-size:34px;}
.cta-band .cta-text{color:rgba(243,241,234,.76);font-size:16px;margin-bottom:30px;max-width:40ch;}
.contact-list li{display:flex;gap:14px;align-items:flex-start;padding:14px 0;border-top:1px solid var(--inv-line);font-size:15px;color:rgba(243,241,234,.86);}
.contact-list li:last-child{border-bottom:1px solid var(--inv-line);}
.contact-list svg{flex:0 0 auto;color:var(--bamboo);margin-top:4px;}
.contact-form{
  background:rgba(243,241,234,.05);border:1px solid var(--inv-line);border-radius:var(--r-card);
  padding:32px;
}
.form-row{margin-bottom:22px;}
.form-row label{display:block;font-size:13px;color:rgba(243,241,234,.72);margin-bottom:6px;letter-spacing:.04em;}
.form-row input[type="text"],
.form-row input[type="tel"],
.form-row select,
.form-row textarea{
  width:100%;background:transparent;border:0;border-bottom:1px solid rgba(243,241,234,.35);
  border-radius:var(--r-input);color:#fff;padding:10px 2px;font-size:15px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.form-row input::placeholder,.form-row textarea::placeholder{color:rgba(243,241,234,.42);}
.form-row select{appearance:none;-webkit-appearance:none;cursor:pointer;
  background-image:linear-gradient(45deg,transparent 50%,rgba(243,241,234,.7) 50%),linear-gradient(135deg,rgba(243,241,234,.7) 50%,transparent 50%);
  background-position:calc(100% - 14px) 18px,calc(100% - 8px) 18px;
  background-size:6px 6px,6px 6px;background-repeat:no-repeat;
}
.form-row select option{color:var(--ink);background:#fff;}
.form-row textarea{resize:vertical;min-height:96px;line-height:1.7;}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{
  outline:none;border-bottom:2px solid var(--bamboo);box-shadow:0 8px 18px -16px rgba(47,143,123,.9);
}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:rgba(243,241,234,.72);margin-bottom:24px;}
.check-row input[type="checkbox"]{
  width:16px;height:16px;border-radius:4px;accent-color:var(--bamboo);margin-top:4px;flex:0 0 auto;
}
.form-note{font-size:13px;color:rgba(243,241,234,.56);margin-top:16px;line-height:1.7;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(243,241,234,.78);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:52px;}
.footer-brand .brand-main{color:var(--inv);font-size:18px;}
.footer-brand .brand-sub{color:rgba(243,241,234,.56);}
.footer-brand p{font-size:14px;color:rgba(243,241,234,.66);margin-top:16px;max-width:32ch;}
.footer-col h4{font-size:14px;color:var(--inv);margin-bottom:16px;letter-spacing:.06em;font-family:var(--sans);}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:rgba(243,241,234,.72);}
.footer-col a:hover{color:#fff;}
.footer-col p{font-size:14px;color:rgba(243,241,234,.66);margin-bottom:10px;}
.footer-bottom{
  border-top:1px solid var(--inv-line);padding:22px 0;display:flex;align-items:center;
  justify-content:space-between;gap:18px;flex-wrap:wrap;font-size:13px;color:rgba(243,241,234,.56);
}
.footer-bottom a{color:rgba(243,241,234,.72);}
.footer-bottom a:hover{color:#fff;}

/* ---------- 回到顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  background:var(--card);border:1px solid var(--line);color:var(--ink);
  display:flex;align-items:center;justify-content:center;box-shadow:var(--sh-2);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s;z-index:70;cursor:pointer;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{border-color:var(--bamboo);color:var(--bamboo);}

/* ---------- 移动底部 Tab ---------- */
.mobile-tab{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:80;
  background:#fff;border-top:1px solid var(--line);box-shadow:0 -6px 20px -18px rgba(16,48,44,.5);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tab .tab-inner{display:grid;grid-template-columns:repeat(5,1fr);height:56px;}
.mobile-tab a{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
  font-size:10px;color:var(--muted);letter-spacing:.02em;
}
.mobile-tab a::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:0;height:2px;background:var(--ink);
  transition:width .22s var(--ease);
}
.mobile-tab a.active{color:var(--ink);}
.mobile-tab a.active::before{width:26px;}
.mobile-tab svg{width:22px;height:22px;}

/* ---------- 动效 ---------- */
.fade-up{opacity:0;transform:translateY(12px);transition:opacity .32s var(--ease),transform .32s var(--ease);}
.fade-up.in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (min-width:1280px){
  .container{max-width:1280px;}
}
@media (max-width:1279px){
  h1{font-size:48px;}
  h2{font-size:32px;}
  .hero-grid{gap:40px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;}
}
@media (max-width:1023px){
  :root{--sec-y:80px;}
  h1{font-size:40px;}
  h2{font-size:28px;}
  .main-nav{display:none;}
  .header-cta{display:none;}
  .mobile-tab{display:block;}
  body{padding-bottom:72px;}
  .to-top{bottom:80px;right:16px;}
  .hero{padding:48px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero h1{max-width:none;}
  .hero-visual{order:-1;}
  .service-grid{grid-template-columns:1fr;gap:32px;}
  .plan-layout{grid-template-columns:1fr;gap:32px;}
  .plan-head{position:static;}
  .faq-layout{grid-template-columns:1fr;gap:32px;}
  .faq-head{position:static;}
  .cta-grid{grid-template-columns:1fr;gap:40px;}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:32px 0;}
  .stat-item:nth-child(3){border-left:0;padding-left:0;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  :root{--sec-y:60px;}
  .container{padding:0 20px;}
  h1{font-size:34px;}
  h2{font-size:26px;}
  h3{font-size:19px;}
  .header-inner{height:60px;}
  .brand-main{font-size:15px;}
  .brand-sub{font-size:11px;}
  .hero-visual img{aspect-ratio:4/3;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:32px;}
  .case-row.wide-left,.case-row.wide-right{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .case-strip .case-card{flex:0 0 82%;}
  .stat-band{padding:56px 0;}
  .stat-value{font-size:36px;}
  .cta-band{padding:64px 0;}
  .cta-band h2{font-size:26px;}
  .contact-form{padding:24px 20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
  .service-row{grid-template-columns:52px 1fr;padding:20px 14px 20px 16px;}
  .btn{padding:13px 22px;font-size:14px;}
  .hero-actions .btn{width:100%;}
  .hero-trust{flex-direction:column;align-items:flex-start;gap:8px;}
  .hero-trust .sep{display:none;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .fade-up{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --ink:#10302C;
  --bamboo:#2F8F7B;
  --orange:#E86A33;
  --orange-deep:#D25A26;
  --bg:#F7F6F2;
  --bg-soft:#F1EFE8;
  --card:#FFFFFF;
  --text:#22282A;
  --muted:#6B7370;
  --line:#E6E3DB;
  --inv:#F3F1EA;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong",Georgia,serif;
  --sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  --r-card:12px;
  --r-btn:6px;
  --r-input:4px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,48,44,.05);
  --sh-2:0 14px 34px -14px rgba(16,48,44,.22);
  --ease:cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
  padding-bottom:0;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;margin:0;}
h1,h2,h3,h4,h5{font-family:var(--serif);font-weight:600;margin:0;letter-spacing:-.01em;color:var(--ink);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--bamboo);outline-offset:2px;border-radius:2px;}
::selection{background:rgba(47,143,123,.18);}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px;}
@media (max-width:640px){.container{padding:0 20px;}}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,246,242,.94);
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s var(--ease),background .3s var(--ease);
  backdrop-filter:saturate(150%) blur(8px);
}
.site-header.is-stuck{box-shadow:0 6px 22px -16px rgba(16,48,44,.4);background:rgba(247,246,242,.97);}
.header-inner{display:flex;align-items:center;gap:32px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:30px;height:30px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  background:var(--ink);color:var(--inv);flex:0 0 auto;
}
.brand-mark svg{width:19px;height:19px;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-main{font-family:var(--serif);font-size:17px;font-weight:600;color:var(--ink);letter-spacing:.01em;}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:.06em;}
.main-nav{display:flex;align-items:center;gap:30px;margin-left:auto;}
.main-nav a{
  position:relative;font-size:15px;color:var(--text);
  padding:6px 2px 14px;transition:color .24s var(--ease);
}
.main-nav a::after{
  content:"";position:absolute;left:50%;bottom:0;width:0;height:2px;
  background:var(--ink);transform:translateX(-50%);
  transition:width .26s var(--ease);
}
.main-nav a:hover{color:var(--ink);}
.main-nav a:hover::after{width:22px;}
.main-nav a.active{color:var(--ink);font-weight:600;}
.main-nav a.active::after{width:48px;}
.header-cta{flex:0 0 auto;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:none;cursor:pointer;border-radius:var(--r-btn);
  padding:13px 26px;font-size:15px;line-height:1.2;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 8px 20px -12px rgba(232,106,51,.8);}
.btn-primary:hover{background:var(--orange-deep);transform:translateY(-1px);color:#fff;}
.btn-outline{border:1px solid var(--ink);color:var(--ink);background:transparent;}
.btn-outline:hover{background:rgba(16,48,44,.06);color:var(--ink);}
.btn-sm{padding:10px 18px;font-size:14px;}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--bamboo);font-size:15px;font-weight:600;
}
.text-link span{transition:transform .24s var(--ease);}
.text-link:hover span{transform:translateX(4px);}

/* ============ article hero ============ */
.article-hero{padding:52px 0 40px;border-bottom:1px solid var(--line);background:var(--bg);}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted);margin-bottom:26px;flex-wrap:wrap;}
.breadcrumb a{color:var(--muted);transition:color .2s var(--ease);}
.breadcrumb a:hover{color:var(--bamboo);}
.breadcrumb .sep{color:#C9C5BA;}
.breadcrumb .crumb-title{max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text);}
.badge{
  display:inline-block;padding:5px 14px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.05em;
  background:rgba(47,143,123,.1);color:var(--bamboo);
}
.article-hero h1{
  font-size:44px;line-height:1.22;letter-spacing:-.02em;
  margin:18px 0 18px;max-width:900px;
}
.article-lead{
  font-size:17px;line-height:1.85;color:var(--muted);
  max-width:820px;
}
.meta-row{
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  margin-top:26px;font-size:13px;color:var(--muted);
}
.meta-row .bar{width:1px;height:13px;background:var(--line);}
.meta-row time{font-variant-numeric:tabular-nums;}

/* ============ article shell ============ */
.article-main{padding:64px 0 88px;}
.article-shell{
  display:grid;grid-template-columns:minmax(0,1fr) 336px;
  gap:64px;align-items:start;
}
.article-body{font-size:16px;line-height:1.85;color:var(--text);}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  font-size:28px;line-height:1.4;margin:2em 0 .75em;
  padding-left:16px;border-left:3px solid var(--bamboo);
}
.article-body h3{font-size:22px;line-height:1.45;margin:1.7em 0 .6em;}
.article-body h4{font-size:18px;margin:1.4em 0 .5em;}
.article-body blockquote{
  margin:1.6em 0;padding:20px 22px;
  background:var(--bg-soft);border-left:3px solid var(--bamboo);
  border-radius:0 var(--r-card) var(--r-card) 0;color:#3A4240;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.35em;}
.article-body ul{list-style:none;padding-left:1.3em;}
.article-body ul > li{position:relative;margin:.45em 0;}
.article-body ul > li::before{
  content:"";position:absolute;left:-1.15em;top:.72em;
  width:7px;height:7px;background:rgba(47,143,123,.85);border-radius:1px;
}
.article-body ol{list-style:decimal;}
.article-body ol > li{margin:.45em 0;padding-left:.2em;}
.article-body ol > li::marker{color:var(--bamboo);font-weight:600;}
.article-body img{
  width:100%;object-fit:cover;margin:1.7em auto;
  border-radius:var(--r-card);border:1px solid var(--line);
}
.article-body figure{margin:1.7em 0;}
.article-body figcaption{
  text-align:center;font-size:13px;color:var(--muted);margin-top:10px;
}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;}
.article-body thead th{
  text-align:left;padding:12px 14px;font-weight:600;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);}
.article-body tr:last-child td{border-bottom:1px solid var(--line);}
.article-body a{color:var(--bamboo);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--ink);}
.article-body pre{
  background:var(--bg-soft);border-radius:var(--r-input);
  padding:16px 18px;overflow:auto;font-size:14px;line-height:1.7;
  border:1px solid var(--line);
}
.article-body hr{border:none;border-top:1px solid var(--line);margin:2.4em 0;}
.article-body strong{color:var(--ink);}

/* empty */
.empty-state{
  border:1px solid var(--line);background:var(--card);
  border-radius:var(--r-card);padding:48px 40px;text-align:center;
  box-shadow:var(--sh-1);
}
.empty-state h2{font-size:24px;margin-bottom:12px;}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:24px;}

/* ============ aside ============ */
.article-aside{position:relative;}
.aside-inner{position:sticky;top:100px;display:flex;flex-direction:column;gap:22px;}
.aside-block{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:22px 22px 20px;box-shadow:var(--sh-1);
}
.aside-title{
  font-size:15px;font-family:var(--sans);font-weight:600;color:var(--ink);
  letter-spacing:.04em;padding-bottom:12px;border-bottom:1px solid var(--line);
  margin-bottom:14px;display:flex;align-items:center;gap:8px;
}
.aside-title::before{content:"";width:4px;height:14px;background:var(--bamboo);border-radius:1px;}
.toc-list li{margin:2px 0;}
.toc-list a{
  display:block;font-size:14px;line-height:1.6;color:var(--muted);
  padding:7px 10px;border-left:2px solid transparent;
  border-radius:0 var(--r-input) var(--r-input) 0;
  transition:all .22s var(--ease);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.toc-list a:hover,.toc-list a.is-current{
  color:var(--ink);background:var(--bg-soft);border-left-color:var(--bamboo);
}
.aside-links li + li{border-top:1px solid var(--line);}
.aside-links a{
  display:block;font-size:14px;line-height:1.65;color:var(--text);
  padding:11px 0;transition:color .2s var(--ease);
}
.aside-links a:hover{color:var(--bamboo);}
.aside-cta{background:var(--ink);border-color:var(--ink);}
.aside-cta p{color:var(--inv);font-size:14px;line-height:1.75;opacity:.88;margin-bottom:14px;}
.aside-cta .text-link{color:#7FD3C0;}

/* ============ article footer bits ============ */
.article-foot{margin-top:56px;padding-top:36px;border-top:1px solid var(--line);}
.tag-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:34px;}
.tag-row .tag-label{font-size:13px;color:var(--muted);margin-right:2px;}
.tag{
  display:inline-block;padding:5px 13px;border-radius:var(--r-pill);
  font-size:12px;background:rgba(232,106,51,.1);color:var(--orange);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.tag:hover{background:var(--orange);color:#fff;}

.postnav{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:44px;}
.postnav-item{
  display:flex;flex-direction:column;gap:8px;
  border:1px solid var(--line);background:var(--card);
  border-radius:var(--r-card);padding:18px 20px;box-shadow:var(--sh-1);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.postnav-item:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--bamboo);}
.postnav-item .pn-dir{font-size:12px;color:var(--muted);letter-spacing:.1em;}
.postnav-item .pn-title{
  font-size:15px;color:var(--ink);font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.postnav-item.pn-next{text-align:right;align-items:flex-end;}

.rel-head{
  display:flex;align-items:baseline;justify-content:space-between;
  gap:16px;margin-bottom:20px;
}
.rel-head h3{font-size:20px;}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.rel-card{
  display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--bamboo);}
.rel-thumb{aspect-ratio:3/2;overflow:hidden;background:rgba(16,48,44,.04);}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.rel-card:hover .rel-thumb img{transform:scale(1.03);}
.rel-body{padding:16px 18px 18px;}
.rel-body h4{
  font-size:15px;line-height:1.55;font-family:var(--sans);font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-body p{font-size:13px;color:var(--muted);margin-top:8px;line-height:1.65;}

.back-links{display:flex;gap:26px;flex-wrap:wrap;margin-top:34px;}

/* ============ CTA strip ============ */
.cta-strip{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:44px 0;}
.cta-strip-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-strip h3{font-size:24px;margin-bottom:8px;}
.cta-strip p{font-size:15px;color:var(--muted);}

/* ============ footer ============ */
.site-footer{background:var(--ink);color:var(--inv);padding:72px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:52px;}
.footer-brand .brand-main{color:var(--inv);font-size:19px;display:block;}
.footer-brand .brand-sub{color:rgba(243,241,234,.6);font-size:12px;display:block;margin-top:6px;letter-spacing:.08em;}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(243,241,234,.72);margin-top:16px;max-width:330px;}
.footer-col h4{
  color:var(--inv);font-size:14px;font-family:var(--sans);font-weight:600;
  letter-spacing:.08em;margin-bottom:16px;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{font-size:14px;color:rgba(243,241,234,.72);transition:color .2s var(--ease);}
.footer-col ul a:hover{color:#7FD3C0;}
.footer-col p{font-size:14px;color:rgba(243,241,234,.72);line-height:1.9;}
.footer-bottom{
  border-top:1px solid rgba(243,241,234,.2);
  padding:22px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(243,241,234,.6);
}
.footer-bottom a{color:rgba(243,241,234,.8);}
.footer-bottom a:hover{color:#7FD3C0;}

/* ============ mobile tabbar ============ */
.mobile-tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:90;
  background:#fff;border-top:1px solid var(--line);
  box-shadow:0 -6px 20px -14px rgba(16,48,44,.5);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tabbar a{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:3px;height:56px;font-size:10px;color:var(--muted);position:relative;
}
.mobile-tabbar a svg{width:22px;height:22px;}
.mobile-tabbar a.active{color:var(--ink);}
.mobile-tabbar a.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;background:var(--bamboo);border-radius:0 0 2px 2px;
}

/* back to top */
.to-top{
  position:fixed;right:28px;bottom:28px;z-index:70;
  width:44px;height:44px;border-radius:50%;
  background:var(--ink);color:var(--inv);border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s;
  box-shadow:0 12px 26px -14px rgba(16,48,44,.6);
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--bamboo);}

/* reveal */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s var(--ease),transform .32s var(--ease);}
.reveal.in{opacity:1;transform:none;}

/* ============ responsive ============ */
@media (max-width:1279px){
  .article-shell{gap:48px;grid-template-columns:minmax(0,1fr) 310px;}
}
@media (max-width:1023px){
  .main-nav{gap:22px;}
  .main-nav a{font-size:14px;}
  .article-hero{padding:40px 0 32px;}
  .article-hero h1{font-size:34px;}
  .article-lead{font-size:16px;}
  .article-main{padding:48px 0 64px;}
  .article-shell{grid-template-columns:minmax(0,1fr);gap:44px;}
  .aside-inner{position:static;top:auto;}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:767px){
  .header-inner{height:60px;gap:16px;}
  .main-nav,.header-cta{display:none;}
  .site-header{position:sticky;}
  body{padding-bottom:72px;}
  .article-hero{padding:30px 0 26px;}
  .article-hero h1{font-size:27px;line-height:1.3;}
  .article-lead{font-size:15px;}
  .breadcrumb{font-size:12px;margin-bottom:18px;}
  .breadcrumb .crumb-title{max-width:180px;}
  .article-main{padding:36px 0 52px;}
  .article-body{font-size:16px;}
  .article-body h2{font-size:22px;padding-left:12px;}
  .article-body h3{font-size:19px;}
  .postnav{grid-template-columns:1fr;}
  .postnav-item.pn-next{text-align:left;align-items:flex-start;}
  .rel-grid{grid-template-columns:1fr;}
  .cta-strip-inner{flex-direction:column;align-items:flex-start;}
  .cta-strip .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding-bottom:36px;}
  .footer-brand{grid-column:1 / -1;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .mobile-tabbar{display:flex;}
  .to-top{right:16px;bottom:80px;}
}
@media (max-width:519px){
  .empty-state{padding:32px 22px;}
  .footer-grid{grid-template-columns:1fr;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category1 */
:root{
  --ink:#10302C;
  --ink-soft:#1C4A43;
  --bamboo:#2F8F7B;
  --bamboo-10:rgba(47,143,123,.10);
  --bamboo-06:rgba(47,143,123,.06);
  --bamboo-30:rgba(47,143,123,.30);
  --orange:#E86A33;
  --orange-dark:#D25A26;
  --orange-10:rgba(232,106,51,.10);
  --bg:#F7F6F2;
  --bg-alt:#F1EFE8;
  --card:#FFFFFF;
  --text:#22282A;
  --muted:#6B7370;
  --line:#E6E3DB;
  --on-dark:#F3F1EA;
  --on-dark-line:rgba(243,241,234,.20);
  --r-card:12px;
  --r-btn:6px;
  --r-input:4px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,48,44,.05);
  --sh-2:0 14px 34px -14px rgba(16,48,44,.22);
  --sp-section:112px;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",STSong,Georgia,serif;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:110px;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--r-card);}
a{color:var(--bamboo);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--orange);}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0;}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);color:var(--ink);font-weight:700;letter-spacing:-.01em;}
button,input,select,textarea{font:inherit;color:inherit;}
input,select,textarea{border-radius:var(--r-input);}
::selection{background:var(--bamboo);color:#fff;}
:focus-visible{outline:2px solid var(--bamboo);outline-offset:3px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.nums{font-variant-numeric:tabular-nums;}

/* ---------- 通用按钮 / 徽章 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:14px 28px;border-radius:var(--r-btn);
  border:1px solid transparent;cursor:pointer;
  transition:background-color .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 8px 20px -12px rgba(232,106,51,.9);}
.btn-primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-1px);}
.btn-secondary{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-secondary:hover{background:var(--bamboo-06);border-color:var(--bamboo);color:var(--bamboo);}
.btn-line{background:transparent;color:var(--on-dark);border-color:var(--on-dark-line);}
.btn-line:hover{background:rgba(243,241,234,.12);color:#fff;border-color:rgba(243,241,234,.5);}
.btn-sm{padding:11px 20px;font-size:14px;}
.btn-block{width:100%;}
.link-more{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--bamboo);}
.link-more i{transition:transform .22s ease;font-size:13px;}
.link-more:hover i{transform:translateX(4px);}
.pill{
  display:inline-flex;align-items:center;
  padding:5px 14px;border-radius:var(--r-pill);
  font-size:12px;line-height:1.6;font-weight:600;letter-spacing:.02em;
}
.pill-bamboo{background:var(--bamboo-10);color:var(--bamboo);}
.pill-orange{background:var(--orange-10);color:var(--orange);}
.pill-light{background:rgba(243,241,234,.14);color:var(--on-dark);border:1px solid var(--on-dark-line);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,246,242,.96);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(150%) blur(8px);
  transition:box-shadow .3s ease,background-color .3s ease;
}
.site-header.is-fixed{background:rgba(247,246,242,.92);box-shadow:0 10px 30px -22px rgba(16,48,44,.7);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:12px;color:var(--ink);}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;
  display:grid;place-items:center;
  border-radius:var(--r-btn);
  background:var(--ink);color:var(--on-dark);
}
.brand-mark svg{width:22px;height:22px;}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-main{font-size:16px;font-weight:700;color:var(--ink);letter-spacing:.01em;}
.brand-sub{font-size:12px;color:var(--muted);letter-spacing:.04em;}
.main-nav{display:flex;align-items:center;gap:30px;}
.main-nav a{position:relative;display:inline-block;padding:24px 0;font-size:15px;color:var(--text);font-weight:500;}
.main-nav a::after{
  content:"";position:absolute;left:50%;bottom:20px;width:0;height:2px;
  background:var(--bamboo);transform:translateX(-50%);
  transition:width .25s cubic-bezier(.4,0,.2,1);
}
.main-nav a:hover{color:var(--bamboo);}
.main-nav a:hover::after{width:22px;}
.main-nav a.active{color:var(--bamboo);font-weight:600;}
.main-nav a.active::after{width:48px;}
.header-cta{flex:0 0 auto;}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;
  background-image:linear-gradient(105deg,rgba(16,48,44,.94) 0%,rgba(16,48,44,.86) 46%,rgba(16,48,44,.66) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  color:var(--on-dark);
  padding:52px 0 78px;
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;right:-90px;top:-90px;width:420px;height:420px;
  background-image:radial-gradient(rgba(47,143,123,.5) 1px,transparent 1px);
  background-size:14px 14px;opacity:.28;pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;color:rgba(243,241,234,.72);margin-bottom:26px;flex-wrap:wrap;}
.breadcrumb a{color:rgba(243,241,234,.8);}
.breadcrumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.breadcrumb em{font-style:normal;color:#fff;font-weight:600;}
.eyebrow{font-size:12px;letter-spacing:.18em;color:var(--bamboo);text-transform:uppercase;margin-bottom:16px;font-weight:600;}
.page-hero h1{
  color:var(--on-dark);
  font-size:clamp(34px,4.6vw,60px);
  line-height:1.15;letter-spacing:-.02em;
  max-width:16em;
}
.hero-lead{
  margin-top:24px;max-width:660px;
  font-size:clamp(16px,1.5vw,18px);
  line-height:1.8;color:rgba(243,241,234,.82);
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}

/* ---------- 板块 ---------- */
.section{padding:var(--sp-section) 0;}
.section-tight{padding:74px 0;}
.section-head{max-width:720px;margin-bottom:48px;}
.section-head h2{font-size:clamp(26px,3.2vw,38px);line-height:1.28;}
.section-head p{margin-top:16px;color:var(--muted);font-size:16px;}
.section-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;max-width:none;}
.section-alt{background:var(--bg-alt);}
.divider{height:1px;background:var(--line);border:0;margin:0;}

/* ---------- 主体：目录 + 时间轴 ---------- */
.guide-layout{display:grid;grid-template-columns:264px minmax(0,1fr);gap:64px;align-items:start;}
.toc{position:sticky;top:104px;}
.toc-title{font-size:12px;letter-spacing:.18em;color:var(--muted);font-weight:700;margin-bottom:18px;}
.toc-list{border-left:1px solid var(--line);}
.toc-list li a{
  display:block;position:relative;
  padding:10px 0 10px 20px;
  font-size:14px;color:var(--muted);line-height:1.6;
  transition:color .2s ease,padding-left .2s ease;
}
.toc-list li a::before{
  content:"";position:absolute;left:-1px;top:12px;bottom:12px;width:2px;
  background:transparent;transition:background-color .2s ease;
}
.toc-list li a:hover{color:var(--ink);padding-left:24px;}
.toc-list li a:hover::before{background:var(--bamboo-30);}
.toc-list li a.active{color:var(--bamboo);font-weight:600;}
.toc-list li a.active::before{background:var(--bamboo);}
.toc-note{
  margin-top:28px;padding:18px 20px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);
}
.toc-note p{font-size:13px;color:var(--muted);line-height:1.75;}
.toc-note strong{display:block;color:var(--ink);font-size:14px;margin-bottom:6px;font-family:var(--font-serif);}

.timeline{position:relative;padding-left:64px;}
.timeline::before{
  content:"";position:absolute;left:20px;top:10px;bottom:10px;width:2px;
  background:linear-gradient(180deg,var(--bamboo) 0%,var(--bamboo-30) 60%,rgba(47,143,123,.06) 100%);
}
.tl-item{position:relative;margin-bottom:26px;}
.tl-item:last-child{margin-bottom:0;}
.tl-marker{
  position:absolute;left:-64px;top:22px;
  width:42px;height:42px;border-radius:var(--r-btn);
  background:#fff;border:1px solid var(--line);
  display:grid;place-items:center;
  font-family:var(--font-serif);font-size:16px;font-weight:700;color:var(--bamboo);
  font-variant-numeric:tabular-nums;
  transition:background-color .25s ease,color .25s ease,border-color .25s ease;
}
.tl-item:hover .tl-marker{background:var(--ink);border-color:var(--ink);color:var(--on-dark);}
.tl-body{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 30px;box-shadow:var(--sh-1);
  transition:transform .28s cubic-bezier(.4,0,.2,1),box-shadow .28s ease,border-color .28s ease;
}
.tl-item:hover .tl-body{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--bamboo);}
.tl-body h3{font-size:clamp(19px,2.1vw,24px);line-height:1.4;margin-bottom:12px;}
.tl-body > p{color:var(--muted);font-size:15.5px;}
.tl-points{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
.tl-points li{display:flex;gap:12px;font-size:15px;color:var(--text);align-items:flex-start;}
.tl-points li::before{
  content:"";flex:0 0 6px;width:6px;height:6px;margin-top:10px;
  border-radius:var(--r-input);background:var(--bamboo);opacity:.75;
}
.actions-bar{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px;}

/* ---------- 速览列表 ---------- */
.speed-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:56px;align-items:center;}
.speed-figure{position:relative;overflow:hidden;border-radius:var(--r-card);border:1px solid var(--line);background:var(--bamboo-06);box-shadow:var(--sh-1);}
.speed-figure img{width:100%;height:100%;aspect-ratio:16/11;object-fit:cover;border-radius:0;transition:transform .5s cubic-bezier(.4,0,.2,1);}
.speed-figure:hover img{transform:scale(1.03);}
.speed-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:22px 24px;
  background:linear-gradient(0deg,rgba(16,48,44,.88),rgba(16,48,44,0));
  color:var(--on-dark);font-size:14px;line-height:1.7;
}
.row-list{border-top:1px solid var(--line);}
.row-item{
  position:relative;display:grid;grid-template-columns:56px minmax(0,1fr);gap:20px;
  padding:24px 18px 24px 0;border-bottom:1px solid var(--line);
  transition:background-color .25s ease,padding-left .25s ease;
}
.row-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--bamboo);
  transform:scaleY(0);transform-origin:top;transition:transform .3s cubic-bezier(.4,0,.2,1);
}
.row-item:hover{background:var(--bg-alt);padding-left:18px;}
.row-item:hover::before{transform:scaleY(1);}
.row-index{
  font-family:var(--font-serif);font-size:20px;font-weight:700;color:var(--bamboo);
  font-variant-numeric:tabular-nums;line-height:1.6;
}
.row-item:hover .row-index{color:var(--orange);}
.row-item h3{font-size:19px;margin-bottom:8px;line-height:1.45;}
.row-item p{font-size:15px;color:var(--muted);}
.row-meta{margin-top:10px;display:flex;flex-wrap:wrap;gap:8px;}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:flex-start;justify-content:space-between;gap:24px;
  padding:22px 4px;font-family:var(--font-serif);font-size:18px;font-weight:700;color:var(--ink);
  line-height:1.55;transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--bamboo);}
.faq-item summary::after{
  content:"+";flex:0 0 auto;
  width:28px;height:28px;border-radius:var(--r-input);
  display:grid;place-items:center;
  font-family:var(--font-sans);font-size:18px;font-weight:500;
  color:var(--bamboo);background:var(--bamboo-10);
  transition:transform .28s ease,background-color .28s ease,color .28s ease;
}
.faq-item[open] summary{color:var(--ink);}
.faq-item[open] summary::after{content:"−";background:var(--ink);color:var(--on-dark);}
.faq-answer{padding:0 56px 24px 4px;color:var(--muted);font-size:15.5px;line-height:1.85;}
.faq-note{margin-top:26px;font-size:14px;color:var(--muted);}

/* ---------- 浅底 CTA ---------- */
.light-cta{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.light-cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  padding:56px 0;
}
.light-cta h2{font-size:clamp(22px,2.4vw,30px);line-height:1.4;}
.light-cta p{margin-top:12px;color:var(--muted);font-size:15.5px;max-width:640px;}
.light-cta .actions{display:flex;flex-wrap:wrap;gap:14px;flex:0 0 auto;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(243,241,234,.74);padding:74px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:52px;}
.footer-brand .brand-main{color:var(--on-dark);font-size:18px;display:block;font-family:var(--font-serif);}
.footer-brand .brand-sub{color:rgba(243,241,234,.55);font-size:12px;letter-spacing:.06em;display:block;margin-top:6px;}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.85;max-width:340px;}
.footer-col h4{color:var(--on-dark);font-size:15px;margin-bottom:18px;letter-spacing:.02em;}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul li a{color:rgba(243,241,234,.74);font-size:14px;}
.footer-col ul li a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-col p{font-size:14px;line-height:1.9;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  border-top:1px solid var(--on-dark-line);padding:22px 0 30px;font-size:13px;color:rgba(243,241,234,.6);
}
.footer-bottom a{color:rgba(243,241,234,.75);}
.footer-bottom a:hover{color:#fff;}

/* ---------- 回到顶部 ---------- */
.to-top{
  position:fixed;right:26px;bottom:26px;z-index:90;
  width:44px;height:44px;border-radius:var(--r-pill);border:1px solid var(--line);
  background:#fff;color:var(--ink);
  display:grid;place-items:center;cursor:pointer;
  box-shadow:var(--sh-2);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .3s ease,transform .3s ease,visibility .3s ease,color .2s ease,border-color .2s ease;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{color:var(--bamboo);border-color:var(--bamboo);}

/* ---------- 移动底部 Tab ---------- */
.mobile-tab{display:none;}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s cubic-bezier(.4,0,.2,1),transform .32s cubic-bezier(.4,0,.2,1);}
.reveal.in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{max-width:1120px;}
  .guide-layout{gap:48px;}
  .timeline{padding-left:56px;}
  .tl-marker{left:-56px;}
}
@media (max-width:1023px){
  :root{--sp-section:80px;}
  .container{padding:0 24px;}
  .speed-grid{grid-template-columns:1fr;gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .guide-layout{grid-template-columns:1fr;gap:40px;}
  .toc{position:static;}
  .toc-list{display:grid;grid-template-columns:1fr 1fr;border-left:0;}
  .toc-list li a{border-left:2px solid var(--line);}
  .toc-list li a::before{left:-2px;}
  .toc-note{margin-top:22px;}
  .page-hero{padding:40px 0 60px;}
  .section-tight{padding:56px 0;}
}
@media (max-width:819px){
  body{padding-bottom:72px;}
  .main-nav,.header-cta{display:none;}
  .header-inner{height:60px;}
  .brand-mark{width:32px;height:32px;flex:0 0 32px;}
  .brand-mark svg{width:20px;height:20px;}
  .brand-main{font-size:15px;}
  .brand-sub{font-size:11px;}
  .mobile-tab{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:95;
    background:#fff;border-top:1px solid var(--line);
    box-shadow:0 -8px 24px -18px rgba(16,48,44,.6);
    padding-bottom:env(safe-area-inset-bottom);
    height:calc(56px + env(safe-area-inset-bottom));
  }
  .mobile-tab a{
    flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
    position:relative;color:var(--muted);font-size:10px;line-height:1.2;padding-top:6px;
  }
  .mobile-tab a svg{width:22px;height:22px;stroke-width:1.5;}
  .mobile-tab a.active{color:var(--bamboo);font-weight:600;}
  .mobile-tab a.active::before{
    content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
    width:26px;height:2px;background:var(--bamboo);
  }
  .to-top{bottom:calc(68px + env(safe-area-inset-bottom));right:16px;}
  .light-cta-inner{flex-direction:column;align-items:flex-start;padding:44px 0;}
  .light-cta .actions{width:100%;}
  .light-cta .actions .btn{flex:1 1 100%;}
}
@media (max-width:639px){
  :root{--sp-section:60px;}
  .container{padding:0 20px;}
  .section-head{margin-bottom:32px;}
  .page-hero{padding:32px 0 52px;}
  .hero-actions .btn{flex:1 1 100%;}
  .timeline{padding-left:0;}
  .timeline::before{display:none;}
  .tl-marker{position:static;margin-bottom:12px;width:38px;height:38px;font-size:15px;}
  .tl-body{padding:22px 20px;}
  .toc-list{grid-template-columns:1fr;}
  .row-item{grid-template-columns:42px minmax(0,1fr);gap:14px;padding:20px 12px 20px 0;}
  .row-item:hover{padding-left:12px;}
  .faq-item summary{font-size:16.5px;gap:16px;padding:18px 2px;}
  .faq-answer{padding:0 44px 20px 2px;font-size:15px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:38px;}
  .footer-brand p{max-width:none;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .actions-bar .btn{flex:1 1 100%;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --ink:#10302C;
  --ink-2:#16403A;
  --bamboo:#2F8F7B;
  --bamboo-06:rgba(47,143,123,.06);
  --bamboo-10:rgba(47,143,123,.10);
  --orange:#E86A33;
  --orange-dark:#CE5A26;
  --orange-10:rgba(232,106,51,.10);
  --bg:#F7F6F2;
  --bg-alt:#F1EFE8;
  --card:#FFFFFF;
  --text:#22282A;
  --muted:#6B7370;
  --line:#E6E3DB;
  --inv:#F3F1EA;
  --inv-line:rgba(243,241,234,.20);
  --radius-card:12px;
  --radius-btn:6px;
  --radius-input:4px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(16,48,44,.05);
  --shadow-2:0 14px 34px -14px rgba(16,48,44,.22);
  --container:1200px;
  --ease:cubic-bezier(.4,0,.2,1);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong",serif;
  --sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}

*,
*::before,
*::after{box-sizing:border-box;}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}

body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
  padding-bottom:0;
}

img{max-width:100%;display:block;}
a{color:var(--bamboo);text-decoration:none;}
a:hover{color:var(--ink);}
h1,h2,h3,h4{font-family:var(--serif);color:var(--ink);margin:0;font-weight:700;}
h1{font-size:60px;line-height:1.15;letter-spacing:-.02em;}
h2{font-size:38px;line-height:1.25;letter-spacing:-.01em;}
h3{font-size:24px;line-height:1.4;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--bamboo);outline-offset:3px;border-radius:4px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}

@media (min-width:1280px){
  .container{max-width:1280px;}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:14px 28px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-primary{background:var(--orange);color:#FFFFFF;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--orange-dark);color:#FFFFFF;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-outline:hover{background:var(--bamboo-06);color:var(--ink);border-color:var(--bamboo);}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--bamboo);
  font-weight:600;
  font-size:15px;
  border:0;
  padding:0;
  background:none;
}
.btn-text i{transition:transform .22s var(--ease);font-size:13px;}
.btn-text:hover{color:var(--ink);}
.btn-text:hover i{transform:translateX(4px);}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  padding:4px 12px;
  border-radius:var(--radius-pill);
  font-size:12px;
  line-height:1.6;
  font-weight:600;
  letter-spacing:.02em;
  background:var(--bamboo-10);
  color:var(--bamboo);
}
.badge-warm{background:var(--orange-10);color:var(--orange-dark);}
.eyebrow{
  font-size:12px;
  letter-spacing:.18em;
  color:var(--bamboo);
  text-transform:uppercase;
  font-weight:600;
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(247,246,242,.96);
  border-bottom:1px solid var(--line);
  transition:background-color .28s var(--ease),box-shadow .28s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(247,246,242,.92);
  backdrop-filter:blur(8px);
  box-shadow:0 1px 0 rgba(16,48,44,.06),0 12px 28px -22px rgba(16,48,44,.35);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
}
.brand{display:flex;align-items:center;gap:12px;color:var(--ink);}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:34px;height:34px;
  border-radius:8px;
  background:var(--ink);
  color:var(--inv);
  display:grid;place-items:center;
  flex:0 0 auto;
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-main{font-family:var(--serif);font-size:16px;font-weight:700;color:var(--ink);}
.brand-sub{font-size:12px;color:var(--muted);letter-spacing:.04em;}
.main-nav{display:flex;align-items:center;gap:32px;}
.main-nav a{
  position:relative;
  font-size:15px;
  color:var(--text);
  padding:4px 0 8px;
  transition:color .22s var(--ease);
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:0;height:2px;
  background:var(--ink);
  transition:width .24s var(--ease);
}
.main-nav a:hover{color:var(--bamboo);}
.main-nav a:hover::after{width:24px;background:var(--bamboo);}
.main-nav a.active{color:var(--ink);font-weight:600;}
.main-nav a.active::after{width:48px;}
.header-cta .btn{padding:12px 22px;font-size:14px;}

/* ---------- 页面头部 ---------- */
.page-hero{
  position:relative;
  padding:56px 0 64px;
  background:
    radial-gradient(rgba(16,48,44,.04) 1px,transparent 1px) 0 0/18px 18px,
    linear-gradient(180deg,#FBFAF7 0%,var(--bg) 100%);
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  margin-bottom:22px;
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--bamboo);}
.breadcrumb .sep{color:#C6C2B8;}
.breadcrumb .current{color:var(--ink);}
.hero-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:56px;
  align-items:center;
}
.page-hero h1{font-size:52px;margin:14px 0 20px;max-width:16em;}
.hero-lead{
  font-size:18px;
  color:var(--muted);
  max-width:34em;
  line-height:1.8;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-figure{
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  background:var(--card);
  box-shadow:var(--shadow-1);
}
.hero-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10;}

/* ---------- 页内锚点 ---------- */
.anchor-bar{
  position:sticky;
  top:72px;
  z-index:40;
  background:rgba(247,246,242,.94);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
}
.anchor-inner{
  display:flex;
  align-items:center;
  gap:26px;
  height:58px;
  overflow-x:auto;
  scrollbar-width:none;
}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-inner a{
  font-size:14px;
  color:var(--muted);
  white-space:nowrap;
  padding:4px 0;
  border-bottom:2px solid transparent;
  transition:color .22s var(--ease),border-color .22s var(--ease);
}
.anchor-inner a:hover{color:var(--ink);border-bottom-color:var(--bamboo);}

/* ---------- 板块通用 ---------- */
.section{padding:88px 0;}
.section-alt{background:var(--bg-alt);}
.section-head{max-width:52em;margin-bottom:44px;}
.section-head h2{margin:14px 0 14px;}
.section-head p{color:var(--muted);font-size:16px;}
.section-head-row{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:44px;
}
.section-head-row .section-head{margin-bottom:0;}

/* ---------- 服务卡片 2×2 ---------- */
.card-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:28px;
}
.service-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  display:flex;
  flex-direction:column;
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.service-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-2);
  border-color:var(--bamboo);
}
.service-card .thumb{
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--bamboo-06);
  border-bottom:1px solid var(--line);
}
.service-card .thumb img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .32s var(--ease);
}
.service-card:hover .thumb img{transform:scale(1.03);}
.service-card .card-body{
  padding:24px 26px 28px;
  display:flex;
  flex-direction:column;
  gap:12px;
  flex:1;
}
.service-card h3{font-size:22px;}
.service-card p{color:var(--muted);font-size:15px;}
.card-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:6px;}

/* ---------- 对照表 ---------- */
.table-wrap{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
}
table.compare{
  width:100%;
  border-collapse:collapse;
  font-size:15px;
  background:var(--card);
}
table.compare th,
table.compare td{
  text-align:left;
  padding:20px 24px;
  border:0;
  vertical-align:top;
}
table.compare thead th{
  font-family:var(--serif);
  font-size:16px;
  color:var(--ink);
  background:var(--bg-alt);
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
table.compare tbody td{border-bottom:1px solid var(--line);color:var(--text);}
table.compare tbody tr:last-child td{border-bottom:0;}
table.compare tbody td:first-child{
  background:var(--bamboo-06);
  font-weight:600;
  color:var(--ink);
  white-space:nowrap;
}
table.compare tbody tr{transition:background-color .22s var(--ease);}
table.compare tbody tr:hover td{background:#F5F3EC;}
table.compare tbody tr:hover td:first-child{background:var(--bamboo-10);}

/* ---------- 方案组合 Tabs ---------- */
.tabs-nav{
  display:flex;
  gap:36px;
  border-bottom:1px solid var(--line);
  margin-bottom:36px;
  overflow-x:auto;
  scrollbar-width:none;
}
.tabs-nav::-webkit-scrollbar{display:none;}
.tab-btn{
  background:none;
  border:0;
  border-bottom:2px solid transparent;
  margin-bottom:-1px;
  padding:14px 0;
  font-size:16px;
  color:var(--muted);
  cursor:pointer;
  white-space:nowrap;
  transition:color .22s var(--ease),border-color .22s var(--ease);
}
.tab-btn:hover{color:var(--bamboo);}
.tab-btn.is-active{color:var(--ink);font-weight:600;border-bottom-color:var(--orange);}
.tab-panel{display:none;}
.tab-panel.is-active{display:block;animation:fadeUp .32s var(--ease);}
.plan-grid{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:44px;
  align-items:start;
}
.plan-intro h3{margin-bottom:14px;}
.plan-intro p{color:var(--muted);font-size:15px;margin-bottom:20px;}
.plan-list li{
  display:flex;
  gap:14px;
  padding:16px 0;
  border-bottom:1px solid var(--line);
  font-size:15px;
  color:var(--text);
}
.plan-list li:last-child{border-bottom:0;}
.plan-list .mark{
  flex:0 0 auto;
  width:22px;height:22px;
  border-radius:4px;
  background:var(--bamboo-10);
  color:var(--bamboo);
  display:grid;place-items:center;
  font-size:12px;
  margin-top:3px;
}
.plan-aside{
  background:var(--ink);
  color:var(--inv);
  border-radius:var(--radius-card);
  padding:34px 32px;
}
.plan-aside h4{
  color:var(--inv);
  font-size:20px;
  margin-bottom:14px;
}
.plan-aside p{color:rgba(243,241,234,.78);font-size:15px;}
.plan-aside ul{margin:20px 0 24px;}
.plan-aside li{
  font-size:14px;
  color:rgba(243,241,234,.85);
  padding:10px 0;
  border-bottom:1px solid var(--inv-line);
}
.plan-aside li:last-child{border-bottom:0;}
.plan-aside .btn{margin-top:4px;}

/* ---------- 使用提示列表 ---------- */
.tip-list{
  border-top:1px solid var(--line);
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
}
.tip-row{
  position:relative;
  display:grid;
  grid-template-columns:70px 1fr;
  gap:22px;
  padding:26px 28px;
  border-bottom:1px solid var(--line);
  transition:background-color .22s var(--ease);
}
.tip-row:last-child{border-bottom:0;}
.tip-row::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:2px;
  background:var(--ink);
  transform:scaleY(0);
  transform-origin:top;
  transition:transform .28s var(--ease);
}
.tip-row:hover{background:var(--bg-alt);}
.tip-row:hover::before{transform:scaleY(1);}
.tip-num{
  font-family:var(--serif);
  font-size:24px;
  color:var(--bamboo);
  line-height:1.2;
  transition:color .22s var(--ease);
}
.tip-row:hover .tip-num{color:var(--orange);}
.tip-row h3{font-size:18px;margin-bottom:8px;}
.tip-row p{color:var(--muted);font-size:15px;}

/* ---------- 浅底 CTA 条 ---------- */
.cta-strip{
  background:var(--bamboo-06);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:44px 0;
}
.cta-strip-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
}
.cta-strip h2{font-size:26px;margin-bottom:8px;}
.cta-strip p{color:var(--muted);font-size:15px;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);
  color:var(--inv);
  padding:76px 0 34px;
  margin-top:0;
}
.site-footer .brand-main{color:var(--inv);font-size:18px;}
.site-footer .brand-sub{color:rgba(243,241,234,.62);}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid var(--inv-line);
}
.footer-brand p{
  margin-top:16px;
  font-size:14px;
  color:rgba(243,241,234,.72);
  max-width:30em;
}
.footer-col h4{
  color:var(--inv);
  font-family:var(--sans);
  font-size:14px;
  letter-spacing:.06em;
  margin-bottom:18px;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{color:rgba(243,241,234,.78);font-size:14px;}
.footer-col a:hover{color:#7FD3BF;}
.footer-col p{font-size:14px;color:rgba(243,241,234,.78);margin-bottom:8px;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding-top:24px;
  font-size:13px;
  color:rgba(243,241,234,.6);
}
.footer-bottom a{color:rgba(243,241,234,.72);}
.footer-bottom a:hover{color:#7FD3BF;}

/* ---------- 移动底部 Tab ---------- */
.mobile-tabbar{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:90;
  background:#FFFFFF;
  border-top:1px solid var(--line);
  box-shadow:0 -6px 20px -14px rgba(16,48,44,.4);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tabbar ul{
  display:flex;
  align-items:stretch;
  justify-content:space-between;
  height:56px;
}
.mobile-tabbar li{flex:1;}
.mobile-tabbar a{
  position:relative;
  height:100%;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:3px;
  font-size:10px;
  color:var(--muted);
  line-height:1.2;
}
.mobile-tabbar a i{font-size:18px;}
.mobile-tabbar a::before{
  content:"";
  position:absolute;
  top:0;left:50%;
  width:0;height:2px;
  background:var(--ink);
  transform:translateX(-50%);
  transition:width .24s var(--ease);
}
.mobile-tabbar a.active{color:var(--ink);font-weight:600;}
.mobile-tabbar a.active::before{width:26px;}

/* ---------- 回到顶部 ---------- */
.to-top{
  position:fixed;
  right:24px;bottom:28px;
  z-index:95;
  width:44px;height:44px;
  border-radius:50%;
  border:1px solid var(--line);
  background:#FFFFFF;
  color:var(--ink);
  display:grid;place-items:center;
  box-shadow:var(--shadow-1);
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transition:opacity .28s var(--ease),visibility .28s var(--ease),transform .28s var(--ease),border-color .28s var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible;}
.to-top:hover{transform:translateY(-2px);border-color:var(--bamboo);color:var(--bamboo);box-shadow:var(--shadow-2);}

/* ---------- 动效 ---------- */
.fade-up{opacity:0;transform:translateY(12px);transition:opacity .32s var(--ease),transform .32s var(--ease);}
.fade-up.in{opacity:1;transform:none;}
@keyframes fadeUp{
  from{opacity:0;transform:translateY(10px);}
  to{opacity:1;transform:none;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 28px;}
  .page-hero h1{font-size:46px;}
}

@media (max-width:1023px){
  .main-nav,.header-cta{display:none;}
  .header-inner{height:60px;}
  .mobile-tabbar{display:block;}
  body{padding-bottom:72px;}
  .anchor-bar{top:60px;}
  .page-hero{padding:40px 0 52px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .page-hero h1{font-size:36px;max-width:100%;}
  h2{font-size:30px;}
  .section{padding:72px 0;}
  .plan-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-strip-inner{flex-direction:column;align-items:flex-start;}
  .to-top{bottom:84px;}
}

@media (max-width:767px){
  .card-grid{grid-template-columns:1fr;}
  .section-head-row{flex-direction:column;align-items:flex-start;gap:16px;}
  .hero-figure img{aspect-ratio:4/3;}
  .tip-row{grid-template-columns:48px 1fr;gap:16px;padding:22px 20px;}
  .tip-num{font-size:20px;}
}

@media (max-width:639px){
  .container{padding:0 20px;}
  h1{font-size:34px;}
  .page-hero h1{font-size:30px;}
  h2{font-size:26px;}
  h3{font-size:19px;}
  .section{padding:60px 0;}
  .page-hero{padding:28px 0 44px;}
  .hero-lead{font-size:16px;}
  .hero-actions .btn{width:100%;justify-content:center;}
  .service-card h3{font-size:19px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
  .cta-strip .btn{width:100%;justify-content:center;}
  .plan-aside{padding:26px 22px;}
  .compare-card{padding:0;}
  table.compare{font-size:14px;}
  table.compare thead{display:none;}
  table.compare tbody tr{
    display:block;
    border-bottom:1px solid var(--line);
    padding:8px 0;
  }
  table.compare tbody tr:last-child{border-bottom:0;}
  table.compare tbody td{
    display:block;
    border-bottom:0;
    padding:10px 20px;
  }
  table.compare tbody td:first-child{
    background:transparent;
    color:var(--ink);
    font-size:16px;
    padding-bottom:4px;
  }
  table.compare tbody td[data-label]::before{
    content:attr(data-label);
    display:block;
    font-size:12px;
    letter-spacing:.08em;
    color:var(--muted);
    margin-bottom:2px;
  }
  table.compare tbody tr:hover td,
  table.compare tbody tr:hover td:first-child{background:transparent;}
}

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

/* roulang page: category3 */
/* ===================== 设计变量 ===================== */
:root{
  --ink:#10302C;
  --ink-soft:#17403A;
  --jade:#2F8F7B;
  --jade-dark:#256F60;
  --jade-10:rgba(47,143,123,.10);
  --orange:#E86A33;
  --orange-dark:#D25A26;
  --orange-10:rgba(232,106,51,.10);
  --bg:#F7F6F2;
  --bg-alt:#F1EFE8;
  --card:#FFFFFF;
  --text:#22282A;
  --muted:#6B7370;
  --line:#E6E3DB;
  --line-inverse:rgba(243,241,234,.20);
  --inverse-text:#F3F1EA;

  --radius-card:12px;
  --radius-btn:6px;
  --radius-input:4px;
  --radius-pill:999px;

  --shadow-1:0 1px 2px rgba(16,48,44,.05);
  --shadow-2:0 14px 34px -14px rgba(16,48,44,.22);

  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong",serif;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;

  --ease:cubic-bezier(.4,0,.2,1);
  --sec-pad:112px;
}

/* ===================== 基础重置 ===================== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5{
  margin:0;
  font-family:var(--font-serif);
  font-weight:700;
  color:var(--ink);
  letter-spacing:-.01em;
  line-height:1.3;
}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{display:block;max-width:100%;height:auto;}
a{color:var(--jade);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--jade-dark);}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:none;padding:0;}
figure{margin:0;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--jade);outline-offset:3px;border-radius:2px;}
.num{font-variant-numeric:tabular-nums;}

/* ===================== 容器与板块 ===================== */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:var(--sec-pad) 0;}
.section-tight{padding:72px 0;}
.section-head{max-width:720px;margin-bottom:48px;}
.section-head h2{font-size:38px;line-height:1.25;margin-bottom:16px;}
.section-head p{color:var(--muted);font-size:16px;}
.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--jade);
  font-weight:600;
  margin-bottom:14px;
  font-family:var(--font-sans);
}
.eyebrow-light{color:#8ED7C4;}

/* ===================== 按钮 ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1.4;
  border:1px solid transparent;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--orange);color:#fff;}
.btn-primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:rgba(16,48,44,.06);color:var(--ink);}
.btn-ghost-light{background:transparent;border-color:rgba(243,241,234,.55);color:var(--inverse-text);}
.btn-ghost-light:hover{background:rgba(243,241,234,.12);color:#fff;border-color:rgba(243,241,234,.85);}
.btn-block{width:100%;}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;color:var(--jade);
}
.link-arrow i{transition:transform .22s var(--ease);}
.link-arrow:hover i{transform:translateX(4px);}
.link-underline{position:relative;}
.link-underline::after{
  content:"";position:absolute;left:0;bottom:-3px;height:1px;width:100%;
  background:currentColor;transform:scaleX(0);transform-origin:left;
  transition:transform .28s var(--ease);
}
.link-underline:hover::after{transform:scaleX(1);}

/* ===================== 徽章与标签 ===================== */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:600;letter-spacing:.02em;line-height:1.6;
}
.badge-jade{background:var(--jade-10);color:var(--jade-dark);}
.badge-orange{background:var(--orange-10);color:var(--orange-dark);}
.tag{
  display:inline-flex;align-items:center;
  padding:3px 10px;border-radius:var(--radius-pill);
  border:1px solid var(--line);background:var(--bg);
  font-size:12px;color:var(--muted);
}

/* ===================== 顶部导航 ===================== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,246,242,.96);
  border-bottom:1px solid var(--line);
  transition:background .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(247,246,242,.92);
  backdrop-filter:saturate(150%) blur(8px);
  box-shadow:0 1px 0 rgba(16,48,44,.06),0 10px 30px -22px rgba(16,48,44,.4);
}
.header-inner{display:flex;align-items:center;gap:28px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);flex-shrink:0;}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:28px;height:28px;flex-shrink:0;
  color:var(--jade);
  display:inline-flex;align-items:center;justify-content:center;
}
.brand-mark svg{width:100%;height:100%;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-main{
  font-family:var(--font-serif);
  font-size:16px;font-weight:700;color:var(--ink);letter-spacing:-.01em;
}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:.06em;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.main-nav a{
  position:relative;
  padding:8px 14px;
  font-size:15px;font-weight:500;color:var(--text);
  border-radius:var(--radius-input);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.main-nav a:hover{color:var(--ink);background:rgba(16,48,44,.04);}
.main-nav a.active{color:var(--ink);font-weight:700;}
.main-nav a.active::after{
  content:"";position:absolute;left:50%;bottom:-6px;transform:translateX(-50%);
  width:48px;height:2px;background:var(--ink);border-radius:2px;
}
.header-cta{margin-left:8px;flex-shrink:0;}
.header-cta .btn{padding:11px 22px;font-size:14px;}

/* ===================== 移动端底部 Tab ===================== */
.mobile-tabbar{display:none;}
@media (max-width:1023px){
  .main-nav,.header-cta{display:none;}
  .header-inner{height:60px;}
  body{padding-bottom:72px;}
  .mobile-tabbar{
    display:flex;
    position:fixed;left:0;right:0;bottom:0;z-index:70;
    height:56px;
    padding-bottom:env(safe-area-inset-bottom);
    background:#fff;
    border-top:1px solid var(--line);
    box-shadow:0 -6px 18px -14px rgba(16,48,44,.35);
  }
  .tab-item{
    flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
    position:relative;
    font-size:10px;color:var(--muted);letter-spacing:.02em;
  }
  .tab-item i{font-size:17px;line-height:1;}
  .tab-item:hover{color:var(--muted);}
  .tab-item.active{color:var(--jade-dark);font-weight:600;}
  .tab-item.active::before{
    content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
    width:22px;height:2px;background:var(--jade);border-radius:0 0 2px 2px;
  }
}
@media (min-width:1024px){
  body{padding-bottom:0;}
}

/* ===================== 内页 Hero ===================== */
.page-hero{
  position:relative;
  overflow:hidden;
  background:var(--ink);
  padding:56px 0 64px;
  color:var(--inverse-text);
}
.page-hero-media{position:absolute;inset:0;z-index:0;}
.page-hero-media img{
  width:100%;height:100%;object-fit:cover;
  opacity:.30;
  filter:saturate(.85);
}
.page-hero::after{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(115deg,rgba(16,48,44,.94) 8%,rgba(16,48,44,.72) 55%,rgba(16,48,44,.46) 100%);
}
.page-hero-inner{position:relative;z-index:2;}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:rgba(243,241,234,.72);
  margin-bottom:26px;
}
.breadcrumb a{color:rgba(243,241,234,.86);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb .sep{color:rgba(243,241,234,.42);}
.breadcrumb [aria-current]{color:#fff;}
.page-hero h1{
  color:#fff;
  font-size:52px;
  line-height:1.15;
  letter-spacing:-.02em;
  max-width:16em;
  margin-bottom:20px;
}
.page-hero-lead{
  max-width:720px;
  font-size:17px;line-height:1.8;
  color:rgba(243,241,234,.82);
}
.anchor-nav{
  display:flex;flex-wrap:wrap;gap:10px;
  margin-top:36px;
}
.anchor-nav a{
  display:inline-flex;align-items:center;
  padding:7px 16px;
  border-radius:var(--radius-pill);
  border:1px solid rgba(243,241,234,.28);
  background:rgba(243,241,234,.06);
  color:rgba(243,241,234,.9);
  font-size:13px;
  transition:all .22s var(--ease);
}
.anchor-nav a:hover{
  background:rgba(243,241,234,.16);
  border-color:rgba(243,241,234,.55);
  color:#fff;
  transform:translateY(-1px);
}

/* ===================== 头条大图卡 ===================== */
.headline-card{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:52px;
  align-items:center;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  padding:32px;
  transition:box-shadow .3s var(--ease),border-color .3s var(--ease),transform .3s var(--ease);
}
.headline-card:hover{box-shadow:var(--shadow-2);border-color:rgba(47,143,123,.5);transform:translateY(-2px);}
.headline-media{
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--line);
  aspect-ratio:16/10;
  background:var(--jade-10);
}
.headline-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.headline-card:hover .headline-media img{transform:scale(1.03);}
.headline-body h2{font-size:32px;line-height:1.3;margin:16px 0 14px;}
.headline-body > p{color:var(--muted);font-size:16px;margin-bottom:22px;}
.tick-list li{
  position:relative;
  padding-left:22px;
  margin-bottom:10px;
  font-size:15px;
  color:var(--text);
}
.tick-list li::before{
  content:"";position:absolute;left:0;top:11px;
  width:7px;height:7px;border-radius:2px;background:var(--jade);
}
.headline-meta{
  display:flex;align-items:center;gap:14px;
  margin-top:26px;padding-top:20px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);
}
.headline-meta .dot{width:1px;height:14px;background:var(--line);}

/* ===================== 更新时间线 ===================== */
.timeline-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  column-gap:56px;
}
.timeline-item{
  position:relative;
  padding:0 0 40px 28px;
  border-left:2px solid var(--line);
  margin-bottom:8px;
}
.timeline-item::before{
  content:"";position:absolute;left:-7px;top:8px;
  width:12px;height:12px;border-radius:50%;
  background:var(--bg);
  border:2px solid var(--jade);
  transition:background .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease);
}
.timeline-item:hover::before{background:var(--orange);border-color:var(--orange);transform:scale(1.15);}
.tl-date{
  display:inline-flex;align-items:baseline;gap:4px;
  font-family:var(--font-serif);
  font-variant-numeric:tabular-nums;
  color:var(--ink);
  margin-bottom:8px;
}
.tl-day{font-size:26px;font-weight:700;line-height:1;}
.tl-mon{font-size:12px;color:var(--muted);font-family:var(--font-sans);letter-spacing:.06em;}
.timeline-item h3{
  font-size:19px;line-height:1.45;
  margin-bottom:8px;
  transition:color .22s var(--ease);
}
.timeline-item:hover h3{color:var(--jade-dark);}
.timeline-item p{font-size:15px;color:var(--muted);margin-bottom:14px;}
.timeline-item:last-child{border-left-color:transparent;}

/* ===================== 关注要点（深色） ===================== */
.focus-band{
  background:var(--ink);
  color:var(--inverse-text);
  padding:var(--sec-pad) 0;
  position:relative;
  overflow:hidden;
}
.focus-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(47,143,123,.20) 1px,transparent 1px);
  background-size:22px 22px;
  opacity:.55;
  pointer-events:none;
}
.focus-band .container{position:relative;z-index:1;}
.focus-band h2{color:#fff;font-size:36px;line-height:1.28;max-width:20em;}
.focus-band .lead{color:rgba(243,241,234,.76);max-width:680px;margin-top:16px;font-size:16px;}
.focus-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:0;
  margin-top:56px;
  border-top:1px solid var(--line-inverse);
}
.focus-item{
  padding:36px 32px 8px 0;
  border-right:1px solid var(--line-inverse);
}
.focus-item:last-child{border-right:none;padding-right:0;}
.focus-item:not(:first-child){padding-left:32px;}
.focus-icon{
  width:44px;height:44px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(47,143,123,.18);
  color:#8ED7C4;
  margin-bottom:20px;
}
.focus-icon svg{width:22px;height:22px;}
.focus-item h3{color:#fff;font-size:21px;margin-bottom:12px;}
.focus-item p{color:rgba(243,241,234,.72);font-size:15px;}
.focus-item .focus-num{
  display:block;
  font-family:var(--font-serif);
  font-size:12px;letter-spacing:.18em;
  color:rgba(243,241,234,.42);
  margin-bottom:6px;
}

/* ===================== FAQ ===================== */
.faq-wrap{display:grid;grid-template-columns:1fr 1.6fr;gap:64px;align-items:start;}
.faq-aside h2{font-size:34px;line-height:1.3;margin-bottom:16px;}
.faq-aside p{color:var(--muted);margin-bottom:24px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
  padding:22px 0;
  text-align:left;
  font-family:var(--font-serif);
  font-size:18px;font-weight:700;color:var(--ink);line-height:1.5;
  transition:color .22s var(--ease);
}
.faq-q:hover{color:var(--jade-dark);}
.faq-icon{
  flex-shrink:0;width:24px;height:24px;position:relative;margin-top:4px;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--jade);border-radius:1px;
  transition:transform .3s var(--ease),opacity .3s var(--ease);
}
.faq-icon::before{left:4px;top:11px;width:16px;height:2px;}
.faq-icon::after{left:11px;top:4px;width:2px;height:16px;}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-a{
  overflow:hidden;
  max-height:0;
  transition:max-height .34s var(--ease);
}
.faq-a-inner{padding:0 44px 26px 0;color:var(--muted);font-size:15px;}
.faq-item.is-open .faq-a{max-height:420px;}

/* ===================== 浅底 CTA 条 ===================== */
.cta-band{
  background:var(--bg-alt);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:56px 0;
}
.cta-band-inner{
  display:flex;align-items:center;justify-content:space-between;gap:36px;
}
.cta-band-text h2{font-size:28px;margin-bottom:10px;}
.cta-band-text p{color:var(--muted);font-size:15px;max-width:620px;}
.cta-band-actions{display:flex;gap:14px;flex-shrink:0;flex-wrap:wrap;}

/* ===================== 页脚 ===================== */
.site-footer{
  background:var(--ink);
  color:var(--inverse-text);
  padding:72px 0 28px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.3fr;
  gap:48px;
  padding-bottom:44px;
  border-bottom:1px solid var(--line-inverse);
}
.footer-brand .brand-main{color:#fff;font-size:17px;}
.footer-brand .brand-sub{color:rgba(243,241,234,.6);display:block;margin-top:4px;}
.footer-brand p{
  margin-top:16px;font-size:14px;line-height:1.8;
  color:rgba(243,241,234,.66);
  max-width:340px;
}
.footer-col h4{
  color:#fff;font-size:15px;font-family:var(--font-sans);
  font-weight:600;letter-spacing:.04em;margin-bottom:18px;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{color:rgba(243,241,234,.72);font-size:14px;}
.footer-col ul a:hover{color:#fff;}
.footer-col p{color:rgba(243,241,234,.66);font-size:14px;margin-bottom:8px;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding-top:24px;
  font-size:13px;color:rgba(243,241,234,.55);
  flex-wrap:wrap;
}
.footer-bottom a{color:rgba(243,241,234,.75);}
.footer-bottom a:hover{color:#fff;}

/* ===================== 回到顶部 ===================== */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:80;
  width:44px;height:44px;border-radius:50%;
  background:var(--ink);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-2);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s var(--ease),background .22s var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:none;}
.to-top:hover{background:var(--jade-dark);color:#fff;}
@media (max-width:1023px){
  .to-top{bottom:84px;right:18px;}
}

/* ===================== 进入视口动画 ===================== */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .22s var(--ease),transform .32s var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}

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

/* ===================== 平板 ===================== */
@media (max-width:1023px){
  :root{--sec-pad:80px;}
  .page-hero{padding:44px 0 52px;}
  .page-hero h1{font-size:38px;}
  .headline-card{grid-template-columns:1fr;gap:28px;padding:24px;}
  .headline-body h2{font-size:26px;}
  .timeline-grid{grid-template-columns:1fr;column-gap:0;}
  .focus-band h2{font-size:30px;}
  .focus-grid{grid-template-columns:1fr;border-top:none;}
  .focus-item{
    border-right:none;border-top:1px solid var(--line-inverse);
    padding:28px 0 8px 0;
  }
  .focus-item:not(:first-child){padding-left:0;}
  .faq-wrap{grid-template-columns:1fr;gap:32px;}
  .faq-aside h2{font-size:28px;}
  .section-head h2{font-size:28px;}
  .cta-band-inner{flex-direction:column;align-items:flex-start;gap:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}

/* ===================== 手机 ===================== */
@media (max-width:639px){
  :root{--sec-pad:60px;}
  .container{padding:0 20px;}
  .page-hero h1{font-size:30px;}
  .page-hero-lead{font-size:15px;}
  .anchor-nav{margin-top:26px;}
  .headline-body h2{font-size:23px;}
  .headline-meta{flex-wrap:wrap;gap:10px;}
  .headline-media{aspect-ratio:4/3;}
  .timeline-item{padding-left:22px;}
  .focus-band h2{font-size:25px;}
  .faq-q{font-size:16px;}
  .faq-a-inner{padding-right:8px;}
  .faq-aside h2{font-size:24px;}
  .cta-band-text h2{font-size:22px;}
  .cta-band-actions{width:100%;flex-direction:column;}
  .cta-band-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .brand-main{font-size:15px;}
  .brand-sub{font-size:10px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:400px){
  .page-hero h1{font-size:26px;}
  .brand-main{font-size:14px;}
}

/* roulang page: category4 */
:root{
  --ink:#10302C;
  --ink-deep:#0B2320;
  --bamboo:#2F8F7B;
  --bamboo-soft:rgba(47,143,123,.10);
  --bamboo-line:rgba(47,143,123,.32);
  --orange:#E86A33;
  --orange-dark:#D25C29;
  --orange-soft:rgba(232,106,51,.10);
  --bg:#F7F6F2;
  --bg-sink:#F1EFE8;
  --bg-tint:#EFEDE5;
  --card:#FFFFFF;
  --text:#22282A;
  --muted:#6B7370;
  --line:#E6E3DB;
  --reverse:#F3F1EA;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",STSong,serif;
  --sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --r-card:12px;
  --r-btn:6px;
  --r-input:4px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,48,44,.05);
  --sh-2:0 14px 34px -14px rgba(16,48,44,.22);
  --sec:112px;
  --container:1200px;
  --ease:cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--bamboo);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--ink)}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
ul,ol{list-style:none}
:focus-visible{outline:2px solid var(--bamboo);outline-offset:3px;border-radius:2px}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}
.section{padding:var(--sec) 0}
.section--tight{padding:72px 0}
.section--sink{background:var(--bg-sink)}
.eyebrow{
  font-size:12px;
  letter-spacing:.18em;
  font-weight:600;
  color:var(--bamboo);
  margin:0 0 14px;
}
.section-title{
  font-family:var(--serif);
  font-size:38px;
  line-height:1.25;
  letter-spacing:-.01em;
  color:var(--ink);
  margin:0 0 16px;
  font-weight:700;
}
.section-lead{color:var(--muted);font-size:16px;max-width:62ch}
.num{font-variant-numeric:tabular-nums}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 28px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  text-decoration:none;
  transition:transform .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-primary{background:var(--orange);color:#fff;border-color:var(--orange)}
.btn-primary:hover{background:var(--orange-dark);border-color:var(--orange-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:rgba(16,48,44,.06);color:var(--ink);transform:translateY(-1px)}
.btn-light{background:#fff;color:var(--ink);border-color:#fff}
.btn-light:hover{background:var(--reverse);color:var(--ink);transform:translateY(-1px)}
.btn-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--bamboo);
  font-weight:600;
  font-size:15px;
}
.btn-link .arw{transition:transform .22s var(--ease)}
.btn-link:hover{color:var(--ink)}
.btn-link:hover .arw{transform:translateX(4px)}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  padding:4px 12px;
  border-radius:var(--r-pill);
  font-size:12px;
  font-weight:600;
  line-height:1.6;
  letter-spacing:.02em;
}
.badge-bamboo{background:var(--bamboo-soft);color:var(--bamboo)}
.badge-orange{background:var(--orange-soft);color:var(--orange)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:90;
  background:rgba(247,246,242,.86);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(160%) blur(10px);
  transition:background .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-stuck{
  background:rgba(247,246,242,.92);
  box-shadow:0 6px 20px -14px rgba(16,48,44,.35);
}
.header-inner{
  height:72px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;min-width:0}
.brand-mark{
  flex:0 0 28px;
  width:28px;height:28px;
  color:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;
}
.brand-mark svg{width:28px;height:28px}
.brand-text{display:flex;flex-direction:column;line-height:1.24;min-width:0}
.brand-main{
  font-family:var(--serif);
  font-size:16px;
  font-weight:700;
  color:var(--ink);
  letter-spacing:.01em;
  white-space:nowrap;
}
.brand-sub{font-size:11px;letter-spacing:.08em;color:var(--muted);white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:34px}
.main-nav a{
  position:relative;
  font-size:15px;
  color:var(--text);
  padding:26px 0;
  white-space:nowrap;
  transition:color .2s var(--ease);
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:0;bottom:20px;
  width:0;height:2px;
  background:var(--ink);
  transition:width .26s var(--ease);
}
.main-nav a:hover{color:var(--bamboo)}
.main-nav a:hover::after{width:24px;background:var(--bamboo)}
.main-nav a.active{color:var(--ink);font-weight:600}
.main-nav a.active::after{width:48px;background:var(--ink)}
.header-cta .btn{padding:12px 22px;font-size:14px}

/* ---------- 页面头部 ---------- */
.page-hero{
  position:relative;
  padding:152px 0 72px;
  background:
    radial-gradient(circle at 88% 12%, rgba(47,143,123,.10), transparent 42%),
    radial-gradient(circle at 4% 96%, rgba(232,106,51,.08), transparent 40%),
    var(--bg);
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(16,48,44,.06) 1px, transparent 1px);
  background-size:22px 22px;
  opacity:.7;
  pointer-events:none;
}
.page-hero > .container{position:relative;z-index:1}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  margin-bottom:26px;
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--bamboo)}
.breadcrumb .sep{color:#C9C5BA}
.breadcrumb .current{color:var(--ink);font-weight:600}
.page-hero h1{
  font-family:var(--serif);
  font-size:52px;
  line-height:1.15;
  letter-spacing:-.02em;
  color:var(--ink);
  font-weight:700;
  max-width:19ch;
  margin:0 0 20px;
}
.page-hero-desc{
  font-size:17px;
  color:var(--muted);
  max-width:64ch;
  margin:0 0 34px;
}
.qa-search{
  display:flex;
  align-items:center;
  gap:12px;
  max-width:580px;
  padding:10px 0;
  border-bottom:1px solid #CFCBC0;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.qa-search svg{width:20px;height:20px;color:var(--muted);flex:0 0 20px}
.qa-search input{
  flex:1;
  min-width:0;
  border:none;
  background:transparent;
  padding:6px 0;
  outline:none;
  font-size:16px;
  color:var(--text);
}
.qa-search input::placeholder{color:#A6A29A}
.qa-search:focus-within{border-bottom-color:var(--bamboo);box-shadow:0 1px 0 0 var(--bamboo)}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:28px;
  margin-top:36px;
  font-size:14px;
  color:var(--muted);
}
.hero-meta span{display:flex;align-items:center;gap:8px}
.hero-meta .dot{width:6px;height:6px;border-radius:50%;background:var(--bamboo);flex:0 0 6px}
.hero-meta .dot--orange{background:var(--orange)}

/* ---------- 自助检查 ---------- */
.check-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  border-top:1px solid var(--line);
}
.check-item{
  padding:34px 28px 34px 0;
  border-right:1px solid var(--line);
  position:relative;
  transition:background .25s var(--ease);
}
.check-item:last-child{border-right:none}
.check-item:hover{background:var(--bg-sink)}
.check-no{
  font-family:var(--serif);
  font-size:26px;
  color:var(--orange);
  display:block;
  margin-bottom:14px;
  font-variant-numeric:tabular-nums;
}
.check-item h3{
  font-size:17px;
  font-weight:700;
  color:var(--ink);
  margin:0 0 10px;
}
.check-item p{font-size:14px;color:var(--muted);line-height:1.85}

/* ---------- 问题主体 ---------- */
.qa-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 330px;
  gap:56px;
  align-items:start;
}
.qa-group{margin-bottom:44px}
.qa-group:last-child{margin-bottom:0}
.qa-group-title{
  position:relative;
  padding-left:16px;
  font-family:var(--serif);
  font-size:22px;
  font-weight:700;
  color:var(--ink);
  margin:0 0 6px;
}
.qa-group-title::before{
  content:"";
  position:absolute;
  left:0;top:7px;bottom:5px;
  width:3px;
  border-radius:2px;
  background:var(--bamboo);
}
.qa-group-note{font-size:14px;color:var(--muted);padding-left:16px;margin-bottom:10px}
.qa-item{border-bottom:1px solid var(--line)}
.qa-item:first-of-type{border-top:1px solid var(--line)}
.qa-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:20px;
  padding:20px 4px;
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  transition:color .22s var(--ease),background .22s var(--ease);
}
.qa-item summary::-webkit-details-marker{display:none}
.qa-item summary:hover{color:var(--bamboo);background:var(--bg-sink)}
.qa-q{flex:1;min-width:0}
.qa-icon{position:relative;flex:0 0 18px;width:18px;height:18px;margin-top:6px}
.qa-icon::before,.qa-icon::after{
  content:"";
  position:absolute;
  background:var(--bamboo);
  border-radius:1px;
  transition:transform .3s var(--ease),opacity .3s var(--ease);
}
.qa-icon::before{left:0;top:8px;width:18px;height:2px}
.qa-icon::after{left:8px;top:0;width:2px;height:18px}
.qa-item[open] .qa-icon::after{transform:scaleY(0);opacity:0}
.qa-a{padding:0 40px 22px 4px;color:var(--muted);font-size:15px;line-height:1.85}
.qa-a strong{color:var(--ink);font-weight:600}
.qa-empty{
  display:none;
  padding:26px 4px;
  border-bottom:1px solid var(--line);
  color:var(--muted);
  font-size:15px;
}
.qa-empty a{color:var(--bamboo);font-weight:600}

/* ---------- 帮助卡 ---------- */
.help-card{
  position:sticky;
  top:100px;
  background:var(--ink);
  color:var(--reverse);
  border-radius:var(--r-card);
  padding:34px 28px;
  box-shadow:var(--sh-2);
}
.help-card .badge{background:rgba(243,241,234,.12);color:var(--reverse);margin-bottom:16px}
.help-card h3{
  font-family:var(--serif);
  font-size:24px;
  color:#fff;
  margin:0 0 12px;
  font-weight:700;
}
.help-card p{font-size:14px;line-height:1.85;color:rgba(243,241,234,.76);margin:0 0 20px}
.help-list{border-top:1px solid rgba(243,241,234,.2);margin-bottom:22px}
.help-list li{
  display:flex;
  gap:10px;
  padding:12px 0;
  border-bottom:1px solid rgba(243,241,234,.2);
  font-size:14px;
  color:rgba(243,241,234,.86);
}
.help-list li span{color:var(--orange);font-variant-numeric:tabular-nums;font-weight:700}
.help-card .btn{width:100%}
.help-card .help-note{
  margin:14px 0 0;
  font-size:12px;
  color:rgba(243,241,234,.56);
  text-align:center;
}

/* ---------- 需准备信息 ---------- */
.prep-panel{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:40px 44px;
  box-shadow:var(--sh-1);
}
.prep-head{max-width:62ch;margin-bottom:30px}
.prep-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 48px}
.prep-list li{
  display:flex;
  gap:14px;
  padding:18px 0;
  border-top:1px solid var(--line);
  font-size:15px;
  color:var(--text);
}
.prep-list li .tick{
  flex:0 0 20px;
  width:20px;height:20px;
  border-radius:var(--r-input);
  background:var(--bamboo-soft);
  color:var(--bamboo);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  margin-top:4px;
}
.prep-list li .tick svg{width:13px;height:13px}
.prep-list li small{display:block;color:var(--muted);font-size:13px;line-height:1.75;margin-top:4px}

/* ---------- 相关栏目 ---------- */
.entry-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:26px;
}
.entry-card{
  display:flex;
  flex-direction:column;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.entry-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--bamboo)}
.entry-media{aspect-ratio:16/10;overflow:hidden;background:rgba(16,48,44,.04)}
.entry-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.entry-card:hover .entry-media img{transform:scale(1.03)}
.entry-body{padding:20px 20px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.entry-body h3{
  font-family:var(--serif);
  font-size:19px;
  color:var(--ink);
  font-weight:700;
}
.entry-body p{font-size:14px;color:var(--muted);line-height:1.8;flex:1}
.entry-body .btn-link{font-size:14px}

/* ---------- 浅底 CTA 条 ---------- */
.cta-strip{
  background:var(--bg-tint);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:38px 44px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
}
.cta-strip h2{
  font-family:var(--serif);
  font-size:26px;
  color:var(--ink);
  margin:0 0 8px;
  font-weight:700;
}
.cta-strip p{font-size:15px;color:var(--muted);max-width:58ch}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);
  color:rgba(243,241,234,.78);
  padding:72px 0 26px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:44px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(243,241,234,.2);
}
.footer-brand{display:flex;flex-direction:column;gap:8px}
.footer-brand .brand-main{color:#fff;font-size:18px;white-space:normal}
.footer-brand .brand-sub{color:rgba(243,241,234,.6)}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(243,241,234,.68);margin-top:8px;max-width:36ch}
.footer-col h4{
  font-size:14px;
  color:#fff;
  letter-spacing:.06em;
  margin:0 0 18px;
  font-weight:600;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{color:rgba(243,241,234,.78);font-size:14px}
.footer-col a:hover{color:#fff}
.footer-col p{font-size:14px;color:rgba(243,241,234,.68);margin-bottom:10px;line-height:1.7}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  flex-wrap:wrap;
  padding-top:24px;
  font-size:13px;
  color:rgba(243,241,234,.56);
}
.footer-bottom a{color:rgba(243,241,234,.72)}
.footer-bottom a:hover{color:#fff}

/* ---------- 回到顶部 ---------- */
.to-top{
  position:fixed;
  right:24px;
  bottom:24px;
  width:44px;height:44px;
  border-radius:50%;
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  box-shadow:var(--sh-2);
  opacity:0;
  visibility:hidden;
  transform:translateY(8px);
  transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s;
  cursor:pointer;
  z-index:80;
}
.to-top.is-on{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--ink);color:#fff;border-color:var(--ink)}
.to-top svg{width:18px;height:18px}

/* ---------- 移动底部 Tab ---------- */
.mobile-tab{display:none}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s var(--ease),transform .32s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{max-width:1100px}
}
@media (max-width:1023px){
  :root{--sec:80px}
  .container{padding:0 24px}
  .main-nav{display:none}
  .header-inner{height:64px}
  .brand-main{font-size:15px}
  .brand-sub{font-size:10px}
  .header-cta .btn{padding:10px 18px;font-size:13px}
  .page-hero{padding:118px 0 56px}
  .page-hero h1{font-size:38px;max-width:24ch}
  .page-hero-desc{font-size:16px}
  .section-title{font-size:30px}
  .check-grid{grid-template-columns:repeat(2,1fr)}
  .check-item{padding:28px 22px 28px 0}
  .check-item:nth-child(2){border-right:none;padding-right:0}
  .check-item:nth-child(3),.check-item:nth-child(4){border-top:1px solid var(--line)}
  .check-item:nth-child(3){padding-right:22px}
  .check-item:nth-child(4){padding-right:0}
  .qa-layout{grid-template-columns:minmax(0,1fr);gap:40px}
  .help-card{position:static;top:auto}
  .prep-panel{padding:32px 28px}
  .prep-list{grid-template-columns:minmax(0,1fr);gap:0}
  .entry-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px}
  .cta-strip{padding:32px 28px}
  .section{padding:var(--sec) 0}
}
@media (max-width:639px){
  :root{--sec:60px}
  body{padding-bottom:72px;font-size:16px}
  .container{padding:0 20px}
  .site-header{position:fixed}
  .header-inner{height:60px;justify-content:space-between}
  .header-cta{display:none}
  .brand-mark,.brand-mark svg{width:24px;height:24px}
  .brand-mark{flex:0 0 24px}
  .brand-main{font-size:14px}
  .brand-sub{font-size:10px;letter-spacing:.04em}
  .page-hero{padding:100px 0 44px}
  .page-hero h1{font-size:32px;line-height:1.2;letter-spacing:-.01em}
  .page-hero-desc{font-size:15px;margin-bottom:26px}
  .breadcrumb{font-size:12px;margin-bottom:18px}
  .qa-search{max-width:100%}
  .hero-meta{gap:14px;font-size:13px;margin-top:26px}
  .section-title{font-size:26px}
  .section{padding:var(--sec) 0}
  .check-grid{grid-template-columns:minmax(0,1fr)}
  .check-item{border-right:none;border-top:1px solid var(--line);padding:24px 0}
  .check-item:first-child{border-top:none}
  .check-item:nth-child(3){padding-right:0}
  .qa-group-title{font-size:19px}
  .qa-item summary{font-size:15px;padding:16px 2px;gap:14px}
  .qa-a{padding:0 8px 20px 2px;font-size:14px}
  .help-card{padding:28px 22px}
  .help-card h3{font-size:21px}
  .prep-panel{padding:26px 20px}
  .entry-grid{grid-template-columns:minmax(0,1fr);gap:20px}
  .cta-strip{padding:26px 22px;flex-direction:column;align-items:flex-start}
  .cta-strip h2{font-size:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1;justify-content:center}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;padding-bottom:32px}
  .footer-brand{grid-column:1 / -1}
  .site-footer{padding:52px 0 22px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .to-top{right:16px;bottom:84px;width:40px;height:40px}
  .mobile-tab{
    display:flex;
    position:fixed;
    left:0;right:0;bottom:0;
    z-index:95;
    height:56px;
    padding-bottom:env(safe-area-inset-bottom);
    background:#fff;
    border-top:1px solid var(--line);
    box-shadow:0 -6px 18px -12px rgba(16,48,44,.35);
  }
  .mobile-tab a{
    flex:1;
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:3px;
    font-size:10px;
    color:var(--muted);
    position:relative;
    text-decoration:none;
  }
  .mobile-tab a svg{width:22px;height:22px}
  .mobile-tab a::before{
    content:"";
    position:absolute;
    top:0;left:50%;
    transform:translateX(-50%) scaleX(0);
    width:26px;height:2px;
    background:var(--ink);
    border-radius:0 0 2px 2px;
    transition:transform .24s var(--ease);
  }
  .mobile-tab a.active{color:var(--ink);font-weight:600}
  .mobile-tab a.active::before{transform:translateX(-50%) scaleX(1)}
  .mobile-tab a:hover{color:var(--ink)}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}