/* roulang page: index */
:root{
  --brand-900:#0D3B38;
  --brand-700:#14625B;
  --brand-500:#1F9C8C;
  --brand-300:#6FD3C0;
  --accent-500:#F0844A;
  --accent-100:#FFE9DC;
  --ink-900:#12211F;
  --ink-600:#4E625E;
  --line:#E3EBE8;
  --bg:#F5F8F7;
  --card:#FFFFFF;
  --grad-a:linear-gradient(120deg,#0D3B38 0%,#14625B 38%,#1F9C8C 72%,#6FD3C0 100%);
  --grad-b:linear-gradient(90deg,#1F9C8C,#F0844A);
  --shadow-card:0 8px 24px -12px rgba(13,59,56,.18);
  --shadow-card-hover:0 18px 40px -18px rgba(13,59,56,.30);
  --shadow-panel:0 24px 60px -30px rgba(13,59,56,.45);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Helvetica Neue",sans-serif;
  background:var(--bg);
  color:var(--ink-900);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:3px solid var(--brand-300);
  outline-offset:2px;
  border-radius:8px;
}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media(min-width:768px){.container{padding-left:32px;padding-right:32px}}
@media(min-width:1280px){.container{padding-left:40px;padding-right:40px}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:0 10px 30px -22px rgba(13,59,56,.6)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:14px;height:64px}
@media(min-width:1024px){.header-inner{height:72px}}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;min-width:0}
.brand-mark{
  width:38px;height:38px;flex:none;border-radius:12px;
  background:var(--grad-a);display:grid;place-items:center;color:#fff;
  box-shadow:0 8px 18px -10px rgba(13,59,56,.8);
}
.brand-mark svg{width:22px;height:22px}
.brand-text{font-weight:800;font-size:14px;letter-spacing:-.3px;white-space:nowrap;color:var(--brand-900)}
@media(min-width:1024px){.brand-text{font-size:16.5px}}
.nav-panel{display:none}
@media(min-width:1024px){
  .nav-panel{
    display:flex;align-items:center;gap:4px;
    padding:6px;border-radius:999px;
    background:#F1F6F4;border:1px solid var(--line);
  }
}
.nav-item{
  display:inline-flex;align-items:center;gap:7px;
  padding:8px 16px;border-radius:999px;
  font-size:13.5px;font-weight:600;color:var(--ink-600);
  transition:background .2s ease,color .2s ease,transform .2s ease;
  white-space:nowrap;
}
.nav-item i{font-size:12.5px;color:var(--brand-500);transition:color .2s ease}
.nav-item:hover{background:#EAF6F3;color:var(--brand-700);transform:translateY(-1px)}
.nav-item.active{background:#DFF3EE;color:var(--brand-700);box-shadow:inset 0 0 0 1px #C8E9E1}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.menu-toggle{
  display:inline-grid;place-items:center;
  width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:#fff;color:var(--brand-700);
  font-size:16px;transition:.2s;
}
.menu-toggle:hover{background:#EAF6F3;border-color:var(--brand-300)}
@media(min-width:1024px){.menu-toggle{display:none}}
.mobile-drawer{
  display:none;border-top:1px solid var(--line);background:#fff;
  padding:16px 20px 22px;
}
.mobile-drawer.open{display:block}
.mobile-drawer .drawer-item{
  display:flex;align-items:center;gap:12px;
  padding:14px 16px;border-radius:14px;border:1px solid var(--line);
  margin-bottom:10px;font-size:15px;font-weight:600;color:var(--ink-900);
  transition:.2s;
}
.mobile-drawer .drawer-item i{color:var(--brand-500);width:18px;text-align:center}
.mobile-drawer .drawer-item:hover{background:#EAF6F3;border-color:var(--brand-300)}
.mobile-drawer .drawer-item.active{background:#DFF3EE;border-color:#C8E9E1;color:var(--brand-700)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:14px;
  font-size:15px;font-weight:600;letter-spacing:.1px;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,filter .2s ease;
  white-space:nowrap;
}
.btn i{font-size:13px}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:12px}
.btn-primary{
  background:linear-gradient(135deg,#1F9C8C 0%,#0D8A78 100%);
  color:#fff;box-shadow:0 10px 22px -12px rgba(31,156,140,.85);
}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(.95);box-shadow:0 16px 28px -14px rgba(31,156,140,.9)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:#fff;border:1.5px solid #CFE3DF;color:var(--brand-900)}
.btn-ghost:hover{border-color:var(--brand-500);background:#EAF6F3;transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-light{background:#fff;color:var(--brand-900);box-shadow:0 12px 28px -16px rgba(0,0,0,.55)}
.btn-light:hover{transform:translateY(-1px);background:#F3FBF9}
.btn-outline-light{background:rgba(255,255,255,.08);border:1.5px solid rgba(255,255,255,.55);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.18);transform:translateY(-1px)}
.btn-accent{background:var(--accent-500);color:#fff;box-shadow:0 12px 26px -14px rgba(240,132,74,.9)}
.btn-accent:hover{background:#E2753B;transform:translateY(-1px)}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14.5px;font-weight:600;color:var(--brand-500);
  position:relative;padding-bottom:4px;
}
.text-link::after{
  content:'';position:absolute;left:0;bottom:0;height:2px;width:22px;
  background:var(--grad-b);border-radius:2px;transition:width .28s ease;
}
.text-link i{transition:transform .28s ease;font-size:12px}
.text-link:hover::after{width:100%}
.text-link:hover i{transform:translateX(4px)}

/* ---------- 通用区块 ---------- */
.section{padding:64px 0}
@media(min-width:768px){.section{padding:82px 0}}
@media(min-width:1024px){.section{padding:100px 0}}
.section-head{max-width:740px;margin-bottom:38px}
@media(min-width:1024px){.section-head{margin-bottom:52px}}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12.5px;font-weight:700;letter-spacing:1.2px;
  color:var(--brand-700);margin-bottom:14px;
}
.eyebrow::before{
  content:'';width:26px;height:4px;border-radius:4px;background:var(--grad-b);
}
.h2{
  font-size:clamp(24px,3.2vw,36px);font-weight:700;line-height:1.3;
  letter-spacing:-.4px;color:var(--brand-900);
}
.section-lead{
  margin-top:16px;font-size:16.5px;line-height:1.85;color:var(--ink-600);max-width:640px;
}

/* ---------- 卡片 ---------- */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:24px;
  box-shadow:var(--shadow-card);transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
  overflow:hidden;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover);border-color:var(--brand-300)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--grad-a);padding:52px 0 60px}
@media(min-width:1024px){.hero{padding:78px 0 92px}}
.hero::before{
  content:'';position:absolute;inset:0;
  background:url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  opacity:.12;pointer-events:none;
}
.hero-inner{position:relative;display:grid;gap:38px;align-items:center}
@media(min-width:1024px){.hero-inner{grid-template-columns:7fr 5fr;gap:56px}}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:999px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);
  color:#EAFBF7;font-size:12.5px;font-weight:600;letter-spacing:.6px;
  margin-bottom:20px;
}
.hero-tag i{color:var(--brand-300)}
.hero h1{
  font-size:clamp(30px,5vw,56px);font-weight:800;line-height:1.18;letter-spacing:-.5px;color:#fff;
}
.hero-sub{
  margin-top:20px;font-size:16.5px;line-height:1.8;color:rgba(233,251,247,.82);max-width:560px;
}
@media(min-width:768px){.hero-sub{font-size:18px}}
.hero-cta{display:flex;flex-direction:column;gap:12px;margin-top:32px}
@media(min-width:600px){.hero-cta{flex-direction:row;align-items:center}}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:38px}
@media(max-width:640px){.hero-stats{grid-template-columns:1fr 1fr;gap:10px}}
.hero-stat{
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.18);
  border-radius:16px;padding:14px 16px;transition:.25s;
}
.hero-stat:hover{background:rgba(255,255,255,.17);transform:translateY(-2px)}
.hero-stat b{
  display:block;font-size:22px;font-weight:800;line-height:1.2;color:#fff;
  font-variant-numeric:tabular-nums;
}
@media(min-width:768px){.hero-stat b{font-size:26px}}
.hero-stat span{display:block;font-size:12.5px;color:rgba(233,251,247,.75);margin-top:4px}
.hero-media{position:relative;border-radius:28px;overflow:hidden;box-shadow:var(--shadow-panel)}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-media::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(13,59,56,0) 45%,rgba(13,59,56,.45) 100%);
}
@media(max-width:1023px){.hero-media{margin-top:6px}}

/* ---------- 服务入口区 ---------- */
.svc-top{display:grid;gap:22px}
@media(min-width:900px){.svc-top{grid-template-columns:7fr 5fr}}
.svc-stack{display:grid;gap:22px}
.svc-large{display:flex;flex-direction:column}
.svc-large img{width:100%;aspect-ratio:16/10;object-fit:cover}
.svc-body{padding:24px}
@media(min-width:768px){.svc-body{padding:28px}}
.svc-ico{
  width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
  background:#EAF6F3;color:var(--brand-700);font-size:17px;margin-bottom:16px;
}
.svc-title{font-size:19px;font-weight:600;line-height:1.45;color:var(--brand-900);transition:color .25s}
.card:hover .svc-title{color:var(--brand-500)}
.svc-desc{margin-top:10px;font-size:14.5px;line-height:1.8;color:var(--ink-600)}
.svc-mid{display:flex;gap:16px;align-items:flex-start;padding:22px}
.svc-mid .svc-ico{margin-bottom:0;flex:none}
.svc-row{display:grid;gap:18px;margin-top:22px}
@media(min-width:760px){.svc-row{grid-template-columns:repeat(3,1fr)}}
.svc-mini{display:flex;gap:14px;align-items:flex-start;padding:20px}
.svc-mini .svc-ico{width:38px;height:38px;font-size:15px;margin-bottom:0;flex:none;border-radius:12px}
.svc-mini h3{font-size:16px;font-weight:600;color:var(--brand-900)}
.svc-mini p{margin-top:6px;font-size:13.5px;line-height:1.75;color:var(--ink-600)}
.svc-arrow{
  margin-left:auto;color:var(--brand-300);font-size:14px;transition:transform .25s ease,color .25s ease;
}
.card:hover .svc-arrow{transform:translateX(4px);color:var(--brand-500)}

/* ---------- 数据面板 ---------- */
.panel-dark{
  position:relative;overflow:hidden;
  background:var(--grad-a);border-radius:28px;
  padding:36px 28px;color:#fff;box-shadow:var(--shadow-panel);
}
@media(min-width:768px){.panel-dark{padding:48px 44px}}
@media(min-width:1024px){.panel-dark{padding:56px 56px}}
.panel-dark::after{
  content:'';position:absolute;inset:0;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10);pointer-events:none;border-radius:28px;
}
.panel-grid{position:relative;display:grid;gap:34px}
@media(min-width:1024px){.panel-grid{grid-template-columns:5fr 7fr;gap:52px;align-items:center}}
.panel-dark .h2{color:#fff}
.panel-dark .eyebrow{color:var(--brand-300)}
.panel-dark .section-lead{color:rgba(233,251,247,.78)}
.dot-list{margin-top:26px;display:grid;gap:14px}
.dot-list li{
  display:flex;align-items:center;gap:12px;
  font-size:15.5px;font-weight:600;color:rgba(255,255,255,.94);
}
.dot-list li::before{
  content:'';width:8px;height:8px;border-radius:50%;
  background:var(--grad-b);flex:none;
}
.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
@media(min-width:768px){.stat-grid{grid-template-columns:repeat(2,1fr);gap:16px}}
.stat{
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.18);
  border-radius:16px;padding:20px;transition:transform .25s ease,background .25s ease;
}
.stat:hover{transform:scale(1.02);background:rgba(255,255,255,.17)}
.stat-num{
  font-size:30px;font-weight:800;line-height:1.1;color:#fff;
  font-variant-numeric:tabular-nums;letter-spacing:-.5px;
}
.stat-num em{font-style:normal;font-size:14px;font-weight:600;color:var(--brand-300);margin-left:3px}
.stat-cap{margin-top:8px;font-size:12.5px;color:rgba(233,251,247,.75)}

/* ---------- 场景卡（错位两列） ---------- */
.case-grid{display:grid;gap:22px}
@media(min-width:820px){.case-grid{grid-template-columns:1fr 1fr;gap:26px}}
.case-col{display:grid;gap:22px;align-content:start}
@media(min-width:820px){.case-col.offset{margin-top:36px}}
.case-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.case-tag{
  position:absolute;top:14px;left:14px;z-index:2;
  padding:5px 13px;border-radius:999px;font-size:12px;font-weight:600;
  background:rgba(255,255,255,.94);color:var(--brand-700);
}
.case-media{position:relative}
.case-body{padding:22px 24px 24px}
.case-body h3{font-size:18.5px;font-weight:600;color:var(--brand-900);transition:color .25s}
.card:hover .case-body h3{color:var(--brand-500)}
.case-body p{margin-top:10px;font-size:14.5px;line-height:1.8;color:var(--ink-600)}

/* ---------- 流程 ---------- */
.step{display:grid;gap:24px;align-items:center}
.step + .step{margin-top:52px}
@media(min-width:768px){.step + .step{margin-top:64px}}
@media(min-width:900px){.step{grid-template-columns:1fr 1fr;gap:56px}}
@media(min-width:900px){.step.reverse .step-media{order:-1}}
.step-no{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background:var(--grad-b);color:#fff;font-weight:800;font-size:17px;
  font-variant-numeric:tabular-nums;box-shadow:0 12px 24px -14px rgba(240,132,74,.9);
  margin-bottom:18px;
}
.step h3{font-size:21px;font-weight:700;color:var(--brand-900);line-height:1.4}
.step p{margin-top:12px;font-size:15.5px;line-height:1.85;color:var(--ink-600)}
.step-points{margin-top:18px;display:grid;gap:10px}
.step-points li{
  display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--ink-600);line-height:1.75;
}
.step-points li i{color:var(--brand-500);font-size:13px;margin-top:7px}
.step-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:24px;box-shadow:var(--shadow-card)}

/* ---------- 最新信息 ---------- */
.news-wrap{display:grid;gap:22px}
@media(min-width:1024px){.news-wrap{grid-template-columns:1fr 1fr;gap:28px;align-items:start}}
.news-lead{display:flex;flex-direction:column}
.news-lead img{width:100%;aspect-ratio:16/10;object-fit:cover}
.news-lead .news-body{padding:24px 26px 26px}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  background:var(--accent-100);color:#B4531F;
  font-size:12px;font-weight:600;
}
.pill-teal{background:#E4F4F0;color:var(--brand-700)}
.news-lead h3{margin-top:14px;font-size:20px;font-weight:600;line-height:1.45;color:var(--brand-900);transition:color .25s}
.card:hover h3{color:var(--brand-500)}
.news-lead p{margin-top:12px;font-size:14.5px;line-height:1.8;color:var(--ink-600)}
.news-meta{
  display:flex;align-items:center;gap:10px;margin-top:18px;
  font-size:13px;color:var(--ink-600);
}
.news-meta time{font-variant-numeric:tabular-nums}
.news-meta .sep{width:1px;height:12px;background:var(--line)}
.news-side{display:grid;gap:16px}
.news-mini{display:flex;gap:16px;align-items:center;padding:14px 18px 14px 14px}
.news-mini img{width:96px;height:76px;object-fit:cover;border-radius:14px;flex:none}
.news-mini .mini-text{min-width:0}
.news-mini h3{
  font-size:15.5px;font-weight:600;line-height:1.5;color:var(--brand-900);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .25s;
}
.news-mini p{
  margin-top:6px;font-size:13.5px;line-height:1.7;color:var(--ink-600);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-mini time{font-size:12.5px;color:#8AA09B;display:block;margin-top:8px;font-variant-numeric:tabular-nums}
.empty-state{
  border:1px dashed #CFE3DF;border-radius:24px;background:#fff;
  padding:46px 24px;text-align:center;
}
.empty-state i{font-size:30px;color:var(--brand-300)}
.empty-state p{margin-top:14px;font-size:14.5px;color:var(--ink-600)}
.empty-state .btn{margin-top:20px}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;max-width:880px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.faq-item.open{border-color:var(--brand-300);box-shadow:0 12px 28px -18px rgba(13,59,56,.45)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;text-align:left;font-size:17px;font-weight:600;color:var(--brand-900);
}
.faq-q::-webkit-details-marker{display:none}
.faq-ico{
  width:32px;height:32px;flex:none;border-radius:50%;
  border:1.5px solid var(--brand-500);color:var(--brand-500);
  display:grid;place-items:center;font-size:13px;
  transition:transform .3s ease,background .3s ease,color .3s ease;
}
.faq-item.open .faq-ico{transform:rotate(45deg);background:var(--brand-500);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .38s ease}
.faq-item.open .faq-a{max-height:360px}
.faq-a-inner{padding:0 22px 22px;font-size:15px;line-height:1.9;color:var(--ink-600)}

/* ---------- 联系 ---------- */
.contact-panel{
  position:relative;overflow:hidden;
  background:var(--grad-a);border-radius:28px;
  padding:34px 24px;box-shadow:var(--shadow-panel);
}
@media(min-width:768px){.contact-panel{padding:48px 40px}}
@media(min-width:1024px){.contact-panel{padding:56px}}
.contact-grid{position:relative;display:grid;gap:32px}
@media(min-width:1024px){.contact-grid{grid-template-columns:6fr 6fr;gap:52px;align-items:center}}
.contact-panel .h2{color:#fff}
.contact-panel .eyebrow{color:var(--brand-300)}
.contact-panel .section-lead{color:rgba(233,251,247,.78)}
.contact-list{margin-top:28px;display:grid;gap:16px}
.contact-list li{display:flex;gap:14px;align-items:flex-start;color:rgba(255,255,255,.92)}
.contact-list i{
  width:36px;height:36px;flex:none;border-radius:12px;display:grid;place-items:center;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);
  color:var(--brand-300);font-size:14px;
}
.contact-list b{display:block;font-size:14.5px;font-weight:600;color:#fff}
.contact-list span{display:block;font-size:13.5px;color:rgba(233,251,247,.72);margin-top:2px}
.form-card{background:#fff;border-radius:24px;padding:26px 24px;box-shadow:0 24px 56px -30px rgba(0,0,0,.6)}
@media(min-width:768px){.form-card{padding:32px}}
.form-card h3{font-size:19px;font-weight:700;color:var(--brand-900)}
.form-card > p{margin-top:8px;font-size:13.5px;color:var(--ink-600)}
.field{margin-top:18px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--brand-900);margin-bottom:7px}
.field input,.field textarea{
  width:100%;height:48px;padding:0 14px;border-radius:12px;
  border:1.5px solid var(--line);background:#FBFDFC;
  font-size:14.5px;color:var(--ink-900);
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
  font-family:inherit;
}
.field textarea{height:110px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:#9AA8A5}
.field input:focus,.field textarea:focus{
  background:#fff;border-color:var(--brand-500);
  box-shadow:0 0 0 3px rgba(111,211,192,.32);outline:none;
}
.form-card .btn{width:100%;margin-top:22px}
.form-note{margin-top:12px;font-size:12.5px;color:#8AA09B;text-align:center}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;background:var(--brand-900);color:#fff;margin-top:20px}
.site-footer::before{content:'';display:block;height:4px;background:var(--grad-b)}
.footer-grid{
  display:grid;gap:32px;padding:52px 0 34px;
}
@media(min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 40px}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);box-shadow:none}
.footer-brand strong{font-size:16px;font-weight:800;color:#fff}
.footer-desc{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.66);max-width:320px}
.footer-social{display:flex;gap:10px;margin-top:20px}
.footer-social a{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.14);
  color:rgba(255,255,255,.75);font-size:14px;transition:.22s;
}
.footer-social a:hover{background:rgba(111,211,192,.2);color:#6FD3C0;transform:translateY(-2px)}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.4px}
.footer-col ul{display:grid;gap:11px}
.footer-col a,.footer-col li{font-size:14px;color:rgba(255,255,255,.72);transition:color .2s ease}
.footer-col a:hover{color:#6FD3C0}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;display:flex;flex-wrap:wrap;gap:10px;
  align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.68)}
.footer-bottom a:hover{color:#6FD3C0}

@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category1 */
:root {
    --brand-900: #0D3B38;
    --brand-700: #14625B;
    --brand-500: #1F9C8C;
    --brand-300: #6FD3C0;
    --accent-500: #F0844A;
    --accent-100: #FFE9DC;
    --ink-900: #12211F;
    --ink-600: #4E625E;
    --line: #E3EBE8;
    --bg: #F5F8F7;
    --card: #FFFFFF;
    --grad-a: linear-gradient(120deg, #0D3B38 0%, #14625B 38%, #1F9C8C 72%, #6FD3C0 100%);
    --grad-b: linear-gradient(90deg, #1F9C8C, #F0844A);
    --radius-card: 24px;
    --radius-panel: 28px;
    --shadow-card: 0 8px 24px -12px rgba(13,59,56, .18);
    --shadow-card-hover: 0 18px 40px -18px rgba(13,59,56, .30);
  }

  * { box-sizing: border-box; }

  html { scroll-behavior: smooth; scroll-padding-top: 104px; }

  body {
    margin: 0;
    background: var(--bg);
    color: var(--ink-900);
    font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", system-ui, -apple-system, "Helvetica Neue", sans-serif;
    font-size: 16px;
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
  }

  img { display: block; max-width: 100%; }
  a { color: inherit; text-decoration: none; }
  button { font-family: inherit; cursor: pointer; }
  ul { margin: 0; padding: 0; list-style: none; }

  .container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
  }
  @media (min-width: 768px) { .container { padding: 0 32px; } }
  @media (min-width: 1280px) { .container { padding: 0 40px; } }

  .nums { font-variant-numeric: tabular-nums; }

  /* ---------- Header ---------- */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 60;
    background: rgba(245, 248, 247, .82);
    backdrop-filter: saturate(150%) blur(12px);
    transition: background .28s ease, box-shadow .28s ease, border-color .28s ease;
    border-bottom: 1px solid transparent;
  }
  .site-header.is-scrolled {
    background: rgba(255, 255, 255, .94);
    border-bottom-color: var(--line);
    box-shadow: 0 10px 30px -22px rgba(13, 59, 56, .5);
  }
  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    min-height: 64px;
  }
  @media (min-width: 1024px) { .header-inner { min-height: 72px; } }

  .brand {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
  }
  .brand-mark {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    background: var(--grad-a);
    color: #ffffff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 22px -14px rgba(13, 59, 56, .8);
  }
  .brand-mark svg { width: 22px; height: 22px; }
  .brand-text { display: flex; flex-direction: column; line-height: 1.2; }
  .brand-text strong { font-size: 15px; font-weight: 700; letter-spacing: -.2px; }
  .brand-text span { font-size: 11px; color: var(--ink-600); letter-spacing: .5px; }
  @media (max-width: 400px) { .brand-text span { display: none; } }

  .nav-panel {
    display: none;
    align-items: center;
    gap: 4px;
    padding: 6px;
    border-radius: 999px;
    background: rgba(255, 255, 255, .78);
    border: 1px solid var(--line);
  }
  @media (min-width: 1024px) { .nav-panel { display: flex; } }

  .nav-item {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 8px 15px;
    border-radius: 12px;
    font-size: 13px;
    font-weight: 600;
    color: var(--ink-600);
    transition: background .22s ease, color .22s ease, transform .22s ease;
  }
  .nav-item i { font-size: 13px; color: var(--brand-300); transition: color .22s ease; }
  .nav-item:hover { background: #EAF6F3; color: var(--brand-700); transform: translateY(-1px); }
  .nav-item:hover i { color: var(--brand-500); }
  .nav-item.active { background: #DFF3EE; color: var(--brand-700); }
  .nav-item.active i { color: var(--brand-500); }
  .nav-item:focus-visible { outline: 3px solid var(--brand-300); outline-offset: 2px; }

  .header-actions { display: flex; align-items: center; gap: 10px; }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 0;
    border-radius: 14px;
    font-size: 14px;
    font-weight: 600;
    padding: 0 22px;
    height: 44px;
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
    white-space: nowrap;
  }
  .btn-primary {
    background: linear-gradient(135deg, #1F9C8C 0%, #0D8A78 100%);
    color: #fff;
    box-shadow: 0 12px 24px -16px rgba(13, 59, 56, .9);
  }
  .btn-primary:hover { transform: translateY(-1px); filter: brightness(.96); box-shadow: 0 18px 32px -16px rgba(13, 59, 56, .85); }
  .btn-primary:active { transform: translateY(1px); }
  .btn-ghost {
    background: #fff;
    border: 1.5px solid #CFE3DF;
    color: var(--brand-900);
  }
  .btn-ghost:hover { border-color: var(--brand-500); background: #EAF6F3; }
  .btn-accent { background: var(--accent-500); color: #fff; }
  .btn-accent:hover { background: #E2753B; transform: translateY(-1px); }
  .btn-sm { height: 38px; padding: 0 16px; font-size: 13px; border-radius: 12px; }
  .btn:focus-visible { outline: 3px solid var(--brand-300); outline-offset: 2px; }
  .btn-block { width: 100%; }

  .menu-toggle {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    border: 1px solid var(--line);
    background: #fff;
    color: var(--brand-900);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
  }
  @media (min-width: 1024px) { .menu-toggle { display: none; } }

  .mobile-drawer {
    position: fixed;
    inset: 64px 0 0 0;
    z-index: 55;
    background: rgba(245, 248, 247, .98);
    backdrop-filter: blur(10px);
    padding: 20px;
    display: none;
    flex-direction: column;
    gap: 10px;
    overflow-y: auto;
  }
  .mobile-drawer.open { display: flex; }
  .mobile-drawer a.m-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 18px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 16px;
    font-size: 15px;
    font-weight: 600;
    color: var(--ink-900);
  }
  .mobile-drawer a.m-item i { color: var(--brand-500); }
  .mobile-drawer a.m-item.active { background: #DFF3EE; color: var(--brand-700); border-color: var(--brand-300); }
  @media (min-width: 1024px) { .mobile-drawer { display: none !important; } }

  /* ---------- Breadcrumb ---------- */
  .breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--ink-600);
    padding: 26px 0 0;
    flex-wrap: wrap;
  }
  .breadcrumb a { color: var(--ink-600); transition: color .2s ease; }
  .breadcrumb a:hover { color: var(--brand-500); }
  .breadcrumb .sep { color: #B7C6C2; }
  .breadcrumb .current { color: var(--ink-900); font-weight: 600; }

  /* ---------- Hero ---------- */
  .cat-hero { padding: 22px 0 40px; }
  @media (min-width: 768px) { .cat-hero { padding: 28px 0 56px; } }

  .hero-grid {
    display: grid;
    gap: 28px;
    align-items: center;
  }
  @media (min-width: 1024px) {
    .hero-grid { grid-template-columns: 7fr 5fr; gap: 48px; }
  }

  .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: 999px;
    background: var(--accent-100);
    color: #B4531F;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: .3px;
  }

  .cat-hero h1 {
    font-size: clamp(28px, 4.6vw, 46px);
    font-weight: 800;
    line-height: 1.22;
    letter-spacing: -.5px;
    margin: 18px 0 0;
  }
  .cat-hero h1 .hl {
    background: var(--grad-b);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }
  .hero-sub {
    margin-top: 16px;
    font-size: 16px;
    line-height: 1.85;
    color: rgba(13, 59, 56, .82);
    max-width: 620px;
  }

  .hero-facts { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
  .fact-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 8px 14px;
    font-size: 13px;
    color: var(--ink-600);
    font-weight: 600;
  }
  .fact-chip i { color: var(--brand-500); }

  .hero-media {
    position: relative;
    border-radius: var(--radius-card);
    overflow: hidden;
    box-shadow: 0 24px 60px -30px rgba(13, 59, 56, .45);
    border: 1px solid var(--line);
  }
  .hero-media img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
  }
  .hero-media::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(13, 59, 56, .04) 0%, rgba(13, 59, 56, .38) 100%);
  }
  .hero-media .media-tag {
    position: absolute;
    left: 18px;
    bottom: 18px;
    z-index: 2;
    background: rgba(255, 255, 255, .92);
    color: var(--brand-900);
    font-size: 12px;
    font-weight: 600;
    padding: 6px 12px;
    border-radius: 999px;
  }

  /* ---------- Anchor pills ---------- */
  .pill-strip {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    padding: 4px 0 14px;
    scrollbar-width: thin;
  }
  .pill-strip::-webkit-scrollbar { height: 6px; }
  .pill-strip::-webkit-scrollbar-thumb { background: #D5E4E0; border-radius: 999px; }
  .pill {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 16px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: #fff;
    font-size: 13px;
    font-weight: 600;
    color: var(--ink-600);
    transition: all .22s ease;
  }
  .pill i { color: var(--brand-300); font-size: 12px; }
  .pill:hover { border-color: var(--brand-300); color: var(--brand-700); background: #EAF6F3; transform: translateY(-1px); }
  .pill:focus-visible { outline: 3px solid var(--brand-300); outline-offset: 2px; }

  /* ---------- Layout ---------- */
  .body-layout { padding-bottom: 20px; }
  .layout-grid { display: grid; gap: 40px; }
  @media (min-width: 1024px) {
    .layout-grid { grid-template-columns: 264px minmax(0, 1fr); gap: 56px; align-items: start; }
  }

  .toc-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 20px;
    padding: 16px;
    box-shadow: var(--shadow-card);
  }
  @media (min-width: 1024px) {
    .toc-wrap { position: sticky; top: 100px; }
  }
  .toc-title {
    font-size: 13px;
    font-weight: 700;
    color: var(--ink-900);
    padding: 4px 8px 12px;
    display: flex;
    align-items: center;
    gap: 8px;
  }
  .toc-title i { color: var(--brand-500); }
  .toc-list { display: flex; flex-direction: column; gap: 4px; }
  .toc-list a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 12px;
    font-size: 13.5px;
    font-weight: 600;
    color: var(--ink-600);
    transition: all .2s ease;
  }
  .toc-list a .idx {
    font-size: 11px;
    font-weight: 700;
    color: var(--brand-500);
    background: #EAF6F3;
    border-radius: 8px;
    width: 22px;
    height: 22px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
  }
  .toc-list a:hover { background: #EAF6F3; color: var(--brand-700); }
  .toc-list a.active { background: var(--brand-500); color: #fff; }
  .toc-list a.active .idx { background: rgba(255, 255, 255, .22); color: #fff; }
  .toc-list a:focus-visible { outline: 3px solid var(--brand-300); outline-offset: 2px; }

  .toc-help {
    margin-top: 14px;
    padding: 16px;
    border-radius: 16px;
    background: #F0F7F5;
    border: 1px solid #DDEEE9;
  }
  .toc-help p { margin: 0 0 12px; font-size: 13px; line-height: 1.75; color: var(--ink-600); }

  /* ---------- Article sections ---------- */
  .sec { margin-bottom: 56px; }
  @media (min-width: 768px) { .sec { margin-bottom: 72px; } }
  .sec:last-child { margin-bottom: 0; }

  .sec-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: clamp(21px, 2.6vw, 28px);
    font-weight: 700;
    line-height: 1.35;
    margin: 0 0 18px;
  }
  .sec-title::before {
    content: "";
    width: 4px;
    height: 22px;
    border-radius: 999px;
    background: var(--grad-b);
    flex: 0 0 auto;
  }

  .sec p { margin: 0 0 18px; font-size: 16.5px; line-height: 1.95; color: var(--ink-600); }
  .sec p strong { color: var(--ink-900); font-weight: 600; }

  .step-grid {
    display: grid;
    gap: 14px;
    margin: 24px 0 8px;
  }
  @media (min-width: 640px) { .step-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

  .step-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 20px;
    transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
  }
  .step-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-card-hover); border-color: var(--brand-300); }
  .step-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border-radius: 10px;
    background: var(--grad-a);
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 12px;
  }
  .step-card h3 { font-size: 16px; font-weight: 700; margin: 0 0 8px; line-height: 1.5; }
  .step-card p { font-size: 14.5px; line-height: 1.8; margin: 0; }

  .point-card {
    background: #F0F7F5;
    border: 1px solid #DDEEE9;
    border-radius: 16px;
    padding: 20px 22px;
    margin: 22px 0 0;
  }
  .point-card h3 {
    font-size: 15px;
    font-weight: 700;
    margin: 0 0 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--brand-700);
  }
  .point-card h3 i { color: var(--accent-500); }
  .point-card ul { display: grid; gap: 10px; }
  .point-card li {
    position: relative;
    padding-left: 18px;
    font-size: 14.5px;
    line-height: 1.8;
    color: var(--ink-600);
  }
  .point-card li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 11px;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--brand-500);
  }

  .figure-card {
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--line);
    box-shadow: var(--shadow-card);
    margin: 24px 0 0;
    background: #fff;
  }
  .figure-card img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
  .figure-card figcaption {
    padding: 12px 18px 16px;
    font-size: 13px;
    color: var(--ink-600);
    line-height: 1.7;
  }

  .compare-list { display: grid; gap: 12px; margin-top: 22px; }
  .compare-row {
    display: grid;
    gap: 6px;
    padding: 16px 18px;
    border-radius: 16px;
    background: #fff;
    border: 1px solid var(--line);
  }
  @media (min-width: 640px) {
    .compare-row { grid-template-columns: 180px minmax(0, 1fr); align-items: center; gap: 18px; }
  }
  .compare-row .label {
    font-size: 14px;
    font-weight: 700;
    color: var(--brand-700);
    display: flex;
    align-items: center;
    gap: 8px;
  }
  .compare-row .label i { color: var(--brand-300); }
  .compare-row .value { font-size: 14.5px; line-height: 1.8; color: var(--ink-600); }

  /* ---------- CTA band ---------- */
  .cta-band {
    margin: 12px 0 64px;
    border-radius: var(--radius-panel);
    padding: 32px 26px;
    background: linear-gradient(120deg, #EAF6F3 0%, #FDF3EC 100%);
    border: 1px solid var(--line);
    display: grid;
    gap: 20px;
    align-items: center;
  }
  @media (min-width: 768px) {
    .cta-band { grid-template-columns: minmax(0, 1fr) auto; padding: 40px 44px; gap: 32px; margin-bottom: 88px; }
  }
  .cta-band h2 { margin: 0 0 10px; font-size: clamp(20px, 2.4vw, 26px); font-weight: 700; line-height: 1.4; }
  .cta-band p { margin: 0; font-size: 15px; line-height: 1.85; color: var(--ink-600); max-width: 620px; }
  .cta-actions { display: flex; gap: 12px; flex-wrap: wrap; }

  /* ---------- FAQ ---------- */
  .faq-head { text-align: center; margin-bottom: 32px; }
  .faq-head h2 { font-size: clamp(22px, 3vw, 32px); font-weight: 700; margin: 0 0 12px; }
  .faq-head p { margin: 0 auto; font-size: 15.5px; line-height: 1.85; color: var(--ink-600); max-width: 620px; }

  .faq-list { display: grid; gap: 12px; max-width: 880px; margin: 0 auto; }
  .faq-item {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 16px;
    overflow: hidden;
    transition: border-color .22s ease, box-shadow .22s ease;
  }
  .faq-item.open { border-color: var(--brand-300); box-shadow: var(--shadow-card); }
  .faq-q {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 18px 20px;
    background: transparent;
    border: 0;
    text-align: left;
    font-size: 16px;
    font-weight: 600;
    color: var(--ink-900);
    line-height: 1.6;
  }
  .faq-q:focus-visible { outline: 3px solid var(--brand-300); outline-offset: -3px; }
  .faq-icon {
    flex: 0 0 auto;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1.5px solid var(--brand-500);
    color: var(--brand-500);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    transition: transform .28s ease, background .28s ease, color .28s ease;
  }
  .faq-item.open .faq-icon { transform: rotate(45deg); background: var(--brand-500); color: #fff; }
  .faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height .34s ease;
  }
  .faq-a-inner {
    padding: 0 20px 20px;
    font-size: 15px;
    line-height: 1.85;
    color: var(--ink-600);
  }

  /* ---------- Footer ---------- */
  .site-footer {
    background: var(--brand-900);
    color: rgba(255, 255, 255, .78);
    margin-top: 20px;
    position: relative;
  }
  .site-footer::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--grad-b);
  }
  .footer-grid {
    display: grid;
    gap: 32px;
    padding: 56px 0 36px;
  }
  @media (min-width: 640px) { .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
  @media (min-width: 1024px) { .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; } }

  .footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
  .footer-brand .brand-mark { background: rgba(255, 255, 255, .12); box-shadow: none; }
  .footer-brand strong { color: #fff; font-size: 15.5px; font-weight: 700; }
  .footer-desc { margin: 0 0 20px; font-size: 14px; line-height: 1.85; color: rgba(255, 255, 255, .72); max-width: 340px; }
  .footer-social { display: flex; gap: 10px; }
  .footer-social a {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    background: rgba(255, 255, 255, .08);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, .8);
    transition: background .22s ease, color .22s ease;
  }
  .footer-social a:hover { background: rgba(111, 211, 192, .2); color: var(--brand-300); }
  .footer-social a:focus-visible { outline: 3px solid var(--brand-300); outline-offset: 2px; }

  .footer-col h4 {
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    margin: 0 0 16px;
  }
  .footer-col ul { display: grid; gap: 11px; }
  .footer-col li { font-size: 14px; line-height: 1.7; color: rgba(255, 255, 255, .72); }
  .footer-col a { color: rgba(255, 255, 255, .72); transition: color .2s ease; }
  .footer-col a:hover { color: var(--brand-300); }

  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .12);
    padding: 20px 0 28px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: space-between;
    font-size: 13px;
    color: rgba(255, 255, 255, .58);
  }

  /* ---------- Reveal ---------- */
  .reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
  .reveal.visible { opacity: 1; transform: none; }
  @media (prefers-reduced-motion: reduce) {
    .reveal { opacity: 1; transform: none; transition: none; }
    html { scroll-behavior: auto; }
  }

/* roulang page: article */
:root{
    --brand-900:#0D3B38;
    --brand-700:#14625B;
    --brand-500:#1F9C8C;
    --brand-300:#6FD3C0;
    --accent-500:#F0844A;
    --accent-100:#FFE9DC;
    --ink-900:#12211F;
    --ink-600:#4E625E;
    --line:#E3EBE8;
    --bg:#F5F8F7;
    --card:#FFFFFF;
    --grad-a:linear-gradient(120deg,#0D3B38 0%,#14625B 38%,#1F9C8C 72%,#6FD3C0 100%);
    --grad-b:linear-gradient(90deg,#1F9C8C,#F0844A);
    --shadow-card:0 8px 24px -12px rgba(13,59,56,.18);
    --shadow-card-hover:0 18px 40px -18px rgba(13,59,56,.30);
    --shadow-panel:0 24px 60px -30px rgba(13,59,56,.45);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
  body{
    margin:0;
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Helvetica Neue",sans-serif;
    font-size:16px;
    line-height:1.85;
    color:var(--ink-900);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;height:auto}
  a{color:inherit;text-decoration:none}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
  ul,ol{margin:0;padding:0;list-style:none}
  h1,h2,h3,h4,p{margin:0}
  :focus-visible{outline:3px solid var(--brand-300);outline-offset:2px;border-radius:8px}
  .container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
  @media(min-width:768px){.container{padding-left:32px;padding-right:32px}}
  @media(min-width:1280px){.container{padding-left:40px;padding-right:40px}}

  /* ---------- 顶部导航 ---------- */
  .site-header{position:sticky;top:0;z-index:60;background:rgba(245,248,247,.86);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:background .25s ease,border-color .25s ease,box-shadow .25s ease}
  .site-header.is-scrolled{background:rgba(255,255,255,.92);border-bottom-color:var(--line);box-shadow:0 12px 32px -26px rgba(13,59,56,.6)}
  .header-inner{display:flex;align-items:center;gap:14px;height:64px}
  @media(min-width:1024px){.header-inner{height:72px}}
  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
  .brand-mark{width:38px;height:38px;border-radius:12px;background:var(--grad-a);color:#fff;display:grid;place-items:center;box-shadow:var(--shadow-card)}
  .brand-mark svg{width:22px;height:22px}
  .brand-text{font-size:16px;font-weight:800;letter-spacing:-.2px;color:var(--brand-900);white-space:nowrap}
  @media(max-width:420px){.brand-text{font-size:14.5px}}
  .nav-panel{display:none}
  @media(min-width:1024px){
    .nav-panel{display:flex;align-items:center;gap:4px;margin-left:auto;background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px;box-shadow:var(--shadow-card)}
  }
  .nav-item{display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border-radius:12px;font-size:13px;font-weight:600;color:var(--ink-600);transition:background .2s ease,color .2s ease,transform .2s ease;white-space:nowrap}
  .nav-item i{font-size:14px;color:var(--brand-700);transition:color .2s ease}
  .nav-item:hover{background:#EAF6F3;color:var(--brand-700);transform:translateY(-1px)}
  .nav-item.active{background:#DCF1EC;color:var(--brand-900)}
  .header-cta{display:none}
  @media(min-width:1024px){.header-cta{display:flex;align-items:center;margin-left:12px}}
  .nav-toggle{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--brand-900);margin-left:auto;transition:background .2s ease,border-color .2s ease}
  .nav-toggle:hover{background:#EAF6F3;border-color:var(--brand-300)}
  @media(min-width:1024px){.nav-toggle{display:none}}
  .mobile-drawer{display:none;border-top:1px solid var(--line);background:rgba(255,255,255,.98);padding:16px 0 24px}
  .mobile-drawer.open{display:block}
  .drawer-list{display:grid;gap:10px}
  .drawer-item{display:flex;align-items:center;gap:12px;padding:14px 16px;border-radius:16px;background:#F4F9F7;border:1px solid var(--line);font-size:14px;font-weight:600;color:var(--brand-900)}
  .drawer-item i{color:var(--brand-500)}
  .drawer-item:active{background:#EAF6F3}

  /* ---------- 按钮 ---------- */
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 24px;border-radius:14px;font-size:14px;font-weight:600;border:1.5px solid transparent;transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,filter .22s ease}
  .btn-primary{background:linear-gradient(135deg,#1F9C8C,#0D8A78);color:#fff;box-shadow:var(--shadow-card)}
  .btn-primary:hover{transform:translateY(-1px);filter:brightness(.96);box-shadow:var(--shadow-card-hover)}
  .btn-primary:active{transform:translateY(1px)}
  .btn-ghost{background:#fff;border-color:#CFE3DF;color:var(--brand-900)}
  .btn-ghost:hover{border-color:var(--brand-500);background:#EAF6F3}
  .btn-accent{background:var(--accent-500);color:#fff}
  .btn-accent:hover{background:#E2753B;transform:translateY(-1px)}
  .btn-sm{height:40px;padding:0 18px;font-size:13px;border-radius:12px}
  .link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-500);position:relative;padding-bottom:3px}
  .link-more::after{content:"";position:absolute;left:0;bottom:0;width:22px;height:2px;background:var(--grad-b);border-radius:2px;transition:width .25s ease}
  .link-more i{transition:transform .25s ease}
  .link-more:hover::after{width:100%}
  .link-more:hover i{transform:translateX(4px)}

  /* ---------- 面包屑 ---------- */
  .crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding-top:22px;font-size:13px;color:var(--ink-600)}
  .crumbs a{color:var(--ink-600);transition:color .2s ease}
  .crumbs a:hover{color:var(--brand-500)}
  .crumbs .sep{color:#B7C6C2}
  .crumbs .current{color:var(--ink-900);font-weight:600;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

  /* ---------- 文章布局 ---------- */
  .article-layout{display:grid;gap:34px;padding-top:24px;padding-bottom:0}
  @media(min-width:1024px){
    .article-layout{grid-template-columns:minmax(0,1fr) 320px;gap:48px;align-items:start;padding-top:34px}
  }
  .reading-col{min-width:0;max-width:780px}
  .article-head{padding-bottom:24px;border-bottom:1px solid var(--line)}
  .article-head h1{font-size:clamp(26px,4.2vw,40px);line-height:1.28;font-weight:800;letter-spacing:-.5px;margin:14px 0 16px;color:var(--ink-900)}
  .pill{display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:999px;background:var(--accent-100);color:#B85720;font-size:12.5px;font-weight:600;transition:background .2s ease}
  .pill:hover{background:#FFDCC7}
  .meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:14px;color:var(--ink-600)}
  .meta-row i{color:var(--brand-500);margin-right:5px}
  .meta-row .divider{width:1px;height:14px;background:#D3DEDA;display:inline-block}
  .cover-figure{margin:26px 0 4px}
  .cover-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:20px;box-shadow:var(--shadow-card)}
  .cover-figure figcaption{font-size:13px;color:var(--ink-600);text-align:center;margin-top:10px}

  /* ---------- 正文排版 ---------- */
  .prose-cn{font-size:17px;line-height:1.95;color:#1C2E2B;padding:26px 0 6px;word-break:break-word}
  .prose-cn>p{margin:0 0 18px}
  .prose-cn h2{position:relative;font-size:clamp(21px,2.6vw,26px);font-weight:700;line-height:1.4;color:var(--ink-900);margin:44px 0 18px;padding-left:16px;scroll-margin-top:100px}
  .prose-cn h2::before{content:"";position:absolute;left:0;top:.34em;width:4px;height:16px;border-radius:4px;background:var(--grad-b)}
  .prose-cn h3{font-size:18px;font-weight:600;line-height:1.5;color:var(--brand-900);margin:30px 0 12px}
  .prose-cn ul,.prose-cn ol{margin:0 0 20px;padding-left:24px}
  .prose-cn ul{list-style:disc}
  .prose-cn ol{list-style:decimal}
  .prose-cn li{margin-bottom:9px}
  .prose-cn ul li::marker{color:var(--brand-500)}
  .prose-cn ol li::marker{color:var(--brand-700);font-weight:600}
  .prose-cn blockquote{margin:24px 0;padding:16px 20px;border-left:3px solid var(--brand-500);background:#F0F7F5;border-radius:8px;color:#2C4440}
  .prose-cn blockquote p:last-child{margin-bottom:0}
  .prose-cn img{border-radius:16px;margin:24px 0;width:100%}
  .prose-cn figure{margin:24px 0}
  .prose-cn figcaption{font-size:13px;color:var(--ink-600);text-align:center;margin-top:10px}
  .prose-cn a{color:var(--brand-700);border-bottom:1px solid rgba(31,156,140,.45)}
  .prose-cn a:hover{color:var(--brand-500);border-bottom-color:var(--brand-500)}
  .prose-cn strong{color:var(--brand-900)}
  .prose-cn hr{border:0;height:1px;background:var(--line);margin:34px 0}
  .prose-cn table{width:100%;border-collapse:collapse;font-size:15px;background:#fff}
  .prose-cn th,.prose-cn td{padding:12px 16px;border-bottom:1px solid var(--line);text-align:left}
  .prose-cn thead th{background:#F2F8F6;font-weight:600;color:var(--brand-900);white-space:nowrap}
  .prose-cn tbody tr:nth-child(even){background:#FBFDFC}
  .table-scroll{overflow-x:auto;margin:24px 0;border:1px solid var(--line);border-radius:16px;background:#fff;box-shadow:var(--shadow-card)}
  .prose-cn pre{background:#0D3B38;color:#D8F0EA;padding:18px 20px;border-radius:14px;overflow-x:auto;font-size:14px;line-height:1.75;margin:22px 0}
  .prose-cn code{background:#EAF6F3;color:#14625B;padding:2px 6px;border-radius:6px;font-size:.92em}
  .prose-cn pre code{background:none;color:inherit;padding:0}

  /* ---------- 空态 ---------- */
  .empty-state{margin:40px 0;background:#fff;border:1px dashed #CFE3DF;border-radius:24px;padding:52px 24px;text-align:center;box-shadow:var(--shadow-card)}
  .empty-state i{font-size:32px;color:var(--brand-300)}
  .empty-state p{margin:16px 0 22px;font-size:15px;color:var(--ink-600)}

  /* ---------- 文章底部 ---------- */
  .tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:34px;padding-top:26px;border-top:1px solid var(--line)}
  .tag-row .label{font-size:13px;font-weight:600;color:var(--ink-600);margin-right:2px}
  .tag{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;background:#F0F7F5;border:1px solid var(--line);font-size:12.5px;font-weight:600;color:var(--brand-700);transition:background .2s ease,border-color .2s ease}
  .tag:hover{background:#E1F2EE;border-color:var(--brand-300)}
  .action-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:20px}
  .post-nav{display:grid;gap:14px;margin-top:36px}
  @media(min-width:640px){.post-nav{grid-template-columns:1fr 1fr}}
  .post-nav-card{display:block;background:#fff;border:1px solid var(--line);border-radius:20px;padding:18px 20px;box-shadow:var(--shadow-card);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
  .post-nav-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-card-hover);border-color:var(--brand-300)}
  .post-nav-card .dir{display:block;font-size:12.5px;font-weight:600;color:var(--brand-500);margin-bottom:8px}
  .post-nav-card .title{display:block;font-size:15.5px;font-weight:600;color:var(--ink-900);line-height:1.5;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .back-row{margin-top:28px}
  .back-row .link-more{font-size:14px}

  /* ---------- 相关推荐 ---------- */
  .rel-section{margin-top:64px}
  .rel-section h2{font-size:clamp(20px,2.4vw,24px);font-weight:700;color:var(--ink-900);margin-bottom:20px}
  .rel-list{display:grid;gap:16px}
  .rel-card{display:flex;align-items:center;gap:16px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:14px;box-shadow:var(--shadow-card);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
  .rel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-card-hover);border-color:var(--brand-300)}
  .rel-card img{width:96px;height:96px;border-radius:14px;object-fit:cover;flex-shrink:0}
  .rel-card h3{font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.5;margin-bottom:6px}
  .rel-card:hover h3{color:var(--brand-500)}
  .rel-card p{font-size:13.5px;line-height:1.75;color:var(--ink-600);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .rel-card .go{margin-left:auto;color:var(--brand-300);flex-shrink:0;transition:transform .25s ease,color .25s ease}
  .rel-card:hover .go{transform:translateX(4px);color:var(--brand-500)}
  @media(max-width:519px){
    .rel-card{align-items:flex-start}
    .rel-card img{width:76px;height:76px}
  }

  /* ---------- 侧栏 ---------- */
  .side-col{display:grid;gap:20px;align-content:start}
  @media(min-width:1024px){.side-col{position:sticky;top:96px}}
  .side-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:var(--shadow-card)}
  .side-card h2{font-size:15px;font-weight:700;color:var(--brand-900);margin-bottom:16px;display:flex;align-items:center;gap:8px}
  .side-card h2 i{color:var(--brand-500)}
  .toc-list{display:grid;gap:4px;border-left:1px solid var(--line);padding-left:14px}
  .toc-list a{display:block;font-size:13.5px;line-height:1.6;color:var(--ink-600);padding:6px 0;transition:color .2s ease,transform .2s ease}
  .toc-list a:hover{color:var(--brand-500);transform:translateX(2px)}
  .toc-list a.is-active{color:var(--brand-500);font-weight:600}
  .quick-list{display:grid;gap:10px}
  .quick-item{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:16px;background:#F4F9F7;border:1px solid var(--line);transition:background .2s ease,transform .2s ease,border-color .2s ease}
  .quick-item:hover{background:#EAF6F3;transform:translateY(-2px);border-color:var(--brand-300)}
  .quick-item i{width:32px;height:32px;border-radius:10px;background:#fff;display:grid;place-items:center;color:var(--brand-500);font-size:14px;flex-shrink:0;border:1px solid var(--line)}
  .quick-item span{font-size:14px;font-weight:600;color:var(--brand-900)}
  .side-cta{background:linear-gradient(140deg,#EAF6F3,#FFFFFF);border:1px solid #CFE3DF;border-radius:24px;padding:24px;box-shadow:var(--shadow-card)}
  .side-cta h2{font-size:17px;font-weight:700;color:var(--brand-900);margin-bottom:10px}
  .side-cta p{font-size:13.5px;line-height:1.8;color:var(--ink-600);margin-bottom:18px}

  /* ---------- FAQ ---------- */
  .faq-section{margin-top:72px}
  .faq-section h2{font-size:clamp(22px,3vw,30px);font-weight:700;color:var(--ink-900);letter-spacing:-.3px}
  .faq-section .lead{font-size:16px;line-height:1.85;color:var(--ink-600);margin-top:12px;max-width:640px}
  .faq-list{display:grid;gap:12px;margin-top:28px}
  .faq-item{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:var(--shadow-card);transition:border-color .2s ease}
  .faq-item.open{border-color:var(--brand-300)}
  .faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;padding:18px 20px;text-align:left;font-size:17px;font-weight:600;color:var(--ink-900)}
  .faq-icon{width:32px;height:32px;border-radius:50%;border:1.5px solid var(--brand-500);color:var(--brand-500);display:grid;place-items:center;flex-shrink:0;transition:transform .3s ease,background .3s ease,color .3s ease}
  .faq-item.open .faq-icon{transform:rotate(45deg);background:var(--brand-500);color:#fff}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
  .faq-a p{padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--ink-600)}

  /* ---------- CTA ---------- */
  .cta-section{margin-top:72px}
  .cta-band{background:linear-gradient(135deg,#EAF6F3,#FFFFFF 70%);border:1px solid var(--line);border-radius:28px;padding:32px;box-shadow:var(--shadow-card);display:grid;gap:22px}
  @media(min-width:768px){.cta-band{grid-template-columns:1.6fr 1fr;align-items:center;padding:40px}}
  .cta-band h2{font-size:clamp(21px,2.8vw,28px);font-weight:700;color:var(--brand-900);line-height:1.35}
  .cta-band p{font-size:15px;line-height:1.85;color:var(--ink-600);margin-top:12px}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px}
  @media(max-width:640px){.cta-actions .btn{width:100%}}

  /* ---------- 页脚 ---------- */
  .site-footer{position:relative;margin-top:88px;background:var(--brand-900);color:#fff}
  .site-footer::before{content:"";position:absolute;left:0;right:0;top:0;height:4px;background:var(--grad-b)}
  .footer-grid{display:grid;gap:32px;padding:64px 0 40px}
  @media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
  @media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px}}
  .footer-brand{display:flex;align-items:center;gap:10px;font-size:16px;color:#fff}
  .footer-brand .brand-mark{background:rgba(255,255,255,.1);color:var(--brand-300);box-shadow:none}
  .footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);margin:16px 0 18px;max-width:340px}
  .footer-social{display:flex;gap:10px}
  .footer-social a{width:36px;height:36px;border-radius:12px;background:rgba(255,255,255,.08);display:grid;place-items:center;color:#fff;transition:background .2s ease,transform .2s ease}
  .footer-social a:hover{background:var(--brand-500);transform:translateY(-2px)}
  .footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px}
  .footer-col ul{display:grid;gap:10px}
  .footer-col a,.footer-col li{font-size:14px;color:rgba(255,255,255,.72);transition:color .2s ease}
  .footer-col a:hover{color:var(--brand-300)}
  .footer-bottom{display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;padding:20px 0 28px;border-top:1px solid rgba(255,255,255,.12);font-size:13px;color:rgba(255,255,255,.6)}

/* roulang page: category2 */
:root{
  --brand-900:#0D3B38;
  --brand-700:#14625B;
  --brand-500:#1F9C8C;
  --brand-300:#6FD3C0;
  --accent-500:#F0844A;
  --accent-100:#FFE9DC;
  --ink-900:#12211F;
  --ink-600:#4E625E;
  --line:#E3EBE8;
  --bg:#F5F8F7;
  --card:#FFFFFF;
  --grad-a:linear-gradient(120deg,#0D3B38 0%,#14625B 38%,#1F9C8C 72%,#6FD3C0 100%);
  --grad-b:linear-gradient(90deg,#1F9C8C,#F0844A);
  --shadow-card:0 8px 24px -12px rgba(13,59,56,.18);
  --shadow-card-hover:0 18px 40px -18px rgba(13,59,56,.30);
  --shadow-panel:0 24px 60px -30px rgba(13,59,56,.45);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-900);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Helvetica Neue",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink-900)}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:768px){.container{padding-left:32px;padding-right:32px}}
@media (min-width:1200px){.container{padding-left:40px;padding-right:40px}}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(245,248,247,.86);
  border-bottom:1px solid transparent;
  transition:background .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.site-header.scrolled{
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom-color:var(--line);
  box-shadow:0 8px 22px -20px rgba(13,59,56,.5);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  background:var(--grad-a);
  color:#fff;flex:0 0 auto;
  box-shadow:0 10px 22px -14px rgba(13,59,56,.9);
}
.brand-mark svg{width:22px;height:22px}
.brand-text{font-size:16px;font-weight:800;letter-spacing:-.2px;color:var(--brand-900);white-space:nowrap}
.nav-panel{
  display:flex;align-items:center;gap:4px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:999px;
  padding:6px;
  box-shadow:var(--shadow-card);
}
.nav-item{
  display:inline-flex;align-items:center;gap:7px;
  padding:8px 14px;border-radius:12px;
  font-size:13px;font-weight:500;color:var(--ink-600);
  transition:background .2s ease,color .2s ease,transform .2s ease;
  white-space:nowrap;
}
.nav-item i{font-size:12px;color:var(--brand-700);transition:color .2s ease}
.nav-item:hover{background:#EAF6F3;color:var(--brand-500);transform:translateY(-1px)}
.nav-item:hover i{color:var(--brand-500)}
.nav-item.active{background:#E1F4F0;color:var(--brand-700);font-weight:700}
.nav-item.active i{color:var(--brand-700)}
.header-cta{flex:0 0 auto}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:14px;
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
}
.btn:focus-visible{outline:3px solid var(--brand-300);outline-offset:2px}
.btn-primary{background:linear-gradient(135deg,#1F9C8C,#0D8A78);color:#fff;box-shadow:0 12px 26px -16px rgba(31,156,140,.95)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 18px 34px -18px rgba(31,156,140,1);filter:brightness(.97)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:#fff;border:1.5px solid #CFE3DF;color:var(--brand-900)}
.btn-ghost:hover{border-color:var(--brand-500);background:#EAF6F3}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:12px}

/* ============ 页头 ============ */
.page-hero{padding:28px 0 8px}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-600);margin-bottom:20px;flex-wrap:wrap}
.crumbs a:hover{color:var(--brand-500)}
.crumbs .sep{color:#A9BAB6}
.crumbs .current{color:var(--ink-900);font-weight:600}
.hero-grid{display:grid;gap:32px;align-items:center}
@media (min-width:1024px){.hero-grid{grid-template-columns:1.1fr .9fr;gap:48px}}
.hero-badge-row{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:16px}
.stat-badge{
  display:flex;flex-wrap:wrap;align-items:baseline;gap:2px;
  background:var(--accent-100);
  border-radius:16px;padding:12px 18px;
  transition:transform .22s ease;
}
.stat-badge:hover{transform:scale(1.02)}
.stat-num{font-size:28px;font-weight:800;line-height:1;color:var(--brand-900);font-variant-numeric:tabular-nums}
.stat-unit{font-size:14px;font-weight:600;color:var(--brand-700)}
.stat-desc{width:100%;font-size:12px;color:var(--ink-600);margin-top:4px;line-height:1.5}
h1.hero-title{font-size:clamp(30px,5vw,52px);font-weight:800;line-height:1.18;letter-spacing:-.5px}
.hero-lead{font-size:17px;line-height:1.85;color:var(--ink-600);margin-top:16px;max-width:560px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.hero-img{width:100%;border-radius:24px;aspect-ratio:16/9;object-fit:cover;box-shadow:var(--shadow-panel)}
@media (max-width:520px){
  .hero-actions .btn{width:100%}
}

/* ============ 筛选条 ============ */
.filter-bar{padding:34px 0 0}
.filter-inner{
  display:flex;gap:10px;overflow-x:auto;
  padding-bottom:6px;
  scrollbar-width:none;
}
.filter-inner::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 16px;border-radius:999px;
  font-size:13px;font-weight:600;color:var(--ink-600);
  background:#fff;border:1px solid var(--line);
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.chip:hover{background:#EAF6F3;color:var(--brand-500);border-color:var(--brand-300);transform:translateY(-1px)}
.chip.active{background:var(--brand-500);color:#fff;border-color:var(--brand-500)}

/* ============ 通用板块 ============ */
.section{padding:64px 0}
@media (min-width:768px){.section{padding:88px 0}}
@media (min-width:1024px){.section{padding:112px 0}}
.section-head{max-width:720px;margin-bottom:36px}
.section-head h2{font-size:clamp(24px,3.2vw,36px);font-weight:700;line-height:1.3;letter-spacing:-.3px}
.section-lead{font-size:16px;line-height:1.85;color:var(--ink-600);margin-top:14px}
.rule-line{width:64px;height:4px;border-radius:999px;background:var(--grad-b);margin-bottom:18px}

/* ============ 双列横向卡 ============ */
.card-grid{display:grid;gap:20px}
@media (min-width:1024px){.card-grid{grid-template-columns:repeat(2,1fr);gap:24px}}
.sec-card{
  display:flex;gap:18px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:24px;
  padding:24px;
  box-shadow:var(--shadow-card);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.sec-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover);border-color:var(--brand-300)}
.sec-icon{
  flex:0 0 56px;width:56px;height:56px;border-radius:16px;
  display:grid;place-items:center;
  background:#EAF6F3;color:var(--brand-500);font-size:22px;
  transition:background .24s ease,color .24s ease;
}
.sec-card:hover .sec-icon{background:var(--brand-500);color:#fff}
.sec-body h3{font-size:18px;font-weight:600;line-height:1.45;transition:color .22s ease}
.sec-card:hover .sec-body h3{color:var(--brand-500)}
.sec-body p{font-size:14px;line-height:1.75;color:var(--ink-600);margin-top:8px}
.sec-points{margin-top:14px;display:grid;gap:8px}
.sec-points li{
  position:relative;padding-left:18px;
  font-size:14px;line-height:1.72;color:var(--ink-600);
}
.sec-points li::before{
  content:"";position:absolute;left:0;top:9px;
  width:7px;height:7px;border-radius:50%;
  background:var(--brand-300);
}
.sec-card:hover .sec-points li::before{background:var(--accent-500)}

/* ============ 深色流程面板 ============ */
.dark-panel{
  background:var(--grad-a);
  border-radius:28px;
  padding:36px 24px;
  box-shadow:var(--shadow-panel);
  position:relative;overflow:hidden;
}
@media (min-width:768px){.dark-panel{padding:52px 44px}}
.dark-panel::after{
  content:"";position:absolute;right:-80px;top:-80px;
  width:300px;height:300px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.16),rgba(255,255,255,0) 70%);
}
.dark-panel h2{color:#fff;font-size:clamp(24px,3.2vw,34px);font-weight:700;line-height:1.3;position:relative;z-index:1}
.dark-panel .panel-lead{color:rgba(255,255,255,.78);font-size:16px;line-height:1.85;margin-top:14px;max-width:640px;position:relative;z-index:1}
.step-grid{display:grid;gap:16px;margin-top:32px;position:relative;z-index:1}
@media (min-width:768px){.step-grid{grid-template-columns:repeat(3,1fr);gap:20px}}
.step-card{
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.14);
  border-radius:16px;
  padding:22px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
  transition:background .24s ease,transform .24s ease;
}
.step-card:hover{background:rgba(255,255,255,.14);transform:translateY(-3px)}
.step-no{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:42px;height:28px;padding:0 10px;
  border-radius:8px;
  background:linear-gradient(90deg,#6FD3C0,#F0844A);
  color:#0D3B38;font-size:13px;font-weight:800;
  font-variant-numeric:tabular-nums;
}
.step-card h3{color:#fff;font-size:17px;font-weight:600;margin-top:14px;line-height:1.5}
.step-card p{color:rgba(255,255,255,.78);font-size:14px;line-height:1.75;margin-top:8px}
.step-card .step-link{
  display:inline-flex;align-items:center;gap:6px;
  margin-top:14px;font-size:13px;font-weight:600;color:var(--brand-300);
}
.step-card .step-link i{transition:transform .2s ease}
.step-card:hover .step-link i{transform:translateX(4px)}

/* ============ 对比小结 ============ */
.compare-grid{display:grid;gap:20px;margin-top:8px}
@media (min-width:768px){.compare-grid{grid-template-columns:repeat(2,1fr);gap:24px}}
.compare-card{border-radius:24px;padding:28px;transition:transform .24s ease,box-shadow .24s ease}
.compare-card:hover{transform:translateY(-4px)}
.compare-light{background:#EAF6F3;border:1px solid #D6EBE5}
.compare-plain{background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-card)}
.compare-card h3{font-size:19px;font-weight:700;line-height:1.45;display:flex;align-items:center;gap:10px}
.compare-card h3 i{font-size:16px;color:var(--brand-500)}
.compare-list{margin-top:18px;display:grid;gap:12px}
.compare-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14px;line-height:1.72;color:var(--ink-600);
  padding-bottom:12px;border-bottom:1px dashed rgba(13,59,56,.12);
}
.compare-list li:last-child{border-bottom:none;padding-bottom:0}
.compare-list i{color:var(--brand-500);font-size:13px;margin-top:6px}

/* ============ CTA 带 ============ */
.cta-band{
  background:linear-gradient(120deg,#EAF6F3 0%,#FFFFFF 55%,#FFF3EA 100%);
  border:1px solid var(--line);
  border-radius:28px;
  padding:32px 24px;
  display:grid;gap:28px;align-items:center;
}
@media (min-width:768px){.cta-band{padding:44px;grid-template-columns:1.05fr .95fr;gap:40px}}
.cta-band h2{font-size:clamp(22px,3vw,32px);font-weight:700;line-height:1.3}
.cta-band p{font-size:16px;line-height:1.85;color:var(--ink-600);margin-top:14px}
.cta-band .btn{margin-top:24px}
.cta-band img{width:100%;border-radius:20px;aspect-ratio:16/10;object-fit:cover;box-shadow:var(--shadow-card)}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:14px;max-width:880px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:16px;
  transition:box-shadow .24s ease,border-color .24s ease;
}
.faq-item:hover{box-shadow:var(--shadow-card)}
.faq-item.open{border-color:var(--brand-300);box-shadow:var(--shadow-card)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:transparent;border:none;cursor:pointer;text-align:left;
  padding:18px 20px;font-size:17px;font-weight:600;color:var(--ink-900);line-height:1.55;
}
.faq-q:focus-visible{outline:3px solid var(--brand-300);outline-offset:-3px;border-radius:16px}
.faq-q::marker{content:""}
.faq-plus{
  flex:0 0 32px;width:32px;height:32px;border-radius:50%;
  border:1.5px solid var(--brand-500);color:var(--brand-500);
  display:grid;place-items:center;font-size:12px;
  transition:transform .28s ease,background .24s ease,color .24s ease;
}
.faq-item.open .faq-plus{transform:rotate(45deg);background:var(--brand-500);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-item.open .faq-a{max-height:420px}
.faq-a-inner{padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--ink-600)}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--brand-900);
  color:rgba(255,255,255,.72);
  margin-top:24px;
  position:relative;
}
.site-footer::before{
  content:"";display:block;height:4px;width:100%;
  background:var(--grad-b);
}
.footer-grid{
  display:grid;gap:32px;
  padding:52px 0 32px;
}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px;padding:64px 0 40px}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff}
.footer-brand .brand-mark{box-shadow:none;background:rgba(255,255,255,.12);color:var(--brand-300)}
.footer-brand strong{font-size:16px;font-weight:800;letter-spacing:-.2px}
.footer-desc{font-size:14px;line-height:1.85;margin-top:16px;max-width:340px;color:rgba(255,255,255,.72)}
.footer-social{display:flex;gap:10px;margin-top:18px}
.footer-social a{
  width:36px;height:36px;border-radius:10px;
  display:grid;place-items:center;
  background:rgba(255,255,255,.08);
  color:rgba(255,255,255,.78);font-size:14px;
  transition:background .22s ease,color .22s ease,transform .22s ease;
}
.footer-social a:hover{background:rgba(111,211,192,.18);color:var(--brand-300);transform:translateY(-2px)}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a,.footer-col li{font-size:14px;line-height:1.7;color:rgba(255,255,255,.72)}
.footer-col a{transition:color .2s ease}
.footer-col a:hover{color:var(--brand-300)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.56);
}
@media (max-width:767px){
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid > div:first-child{grid-column:1 / -1}
  .footer-bottom{justify-content:flex-start}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr}
}

/* ============ 移动端导航 ============ */
@media (max-width:1023px){
  .header-inner{flex-wrap:wrap;gap:12px;padding-top:10px;padding-bottom:10px;min-height:auto}
  .brand-text{font-size:15px}
  .nav-panel{order:3;width:100%;overflow-x:auto;justify-content:flex-start;border-radius:16px;scrollbar-width:none}
  .nav-panel::-webkit-scrollbar{display:none}
  .header-cta{margin-left:auto}
  .header-cta .btn{height:38px;padding:0 14px;font-size:13px}
}
@media (max-width:520px){
  .brand-text{font-size:14px;white-space:normal;line-height:1.3;max-width:150px}
  .sec-card{flex-direction:column;gap:14px;padding:20px}
  .footer-desc{max-width:none}
}