/* roulang page: index */
:root{
  --brand:#0E8F7E;
  --brand-deep:#0A5F55;
  --brand-mid:#12A08B;
  --brand-soft:#E4F4F0;
  --accent:#F2743B;
  --accent-soft:#FDEDE4;
  --badge:#F5A524;
  --ink:#12211F;
  --ink-2:#4B5F5B;
  --ink-3:#8A9A96;
  --line:#E2E9E6;
  --bg:#F7F8F5;
  --surface:#FFFFFF;
  --dark:#0C2B27;
  --grad-brand:linear-gradient(120deg,#0A5F55 0%,#0E8F7E 48%,#35C39A 100%);
  --grad-accent:linear-gradient(120deg,#F2743B 0%,#F5A524 100%);
  --sh1:0 2px 8px rgba(12,43,39,.06);
  --sh2:0 12px 32px rgba(12,43,39,.10);
  --sh3:0 18px 44px rgba(12,43,39,.16);
  --r-lg:28px;
  --r-md:20px;
  --r-sm:16px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px;}
body{
  margin:0;padding:0;
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;line-height:1.8;color:var(--ink);background:var(--bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
@media (min-width:1024px){body{font-size:17px;}}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-deep);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--accent);}
h1,h2,h3,h4{margin:0 0 12px;color:var(--ink);}
h1{font-size:clamp(30px,5vw,52px);line-height:1.15;font-weight:800;letter-spacing:-.02em;}
h2{font-size:clamp(23px,3.2vw,34px);line-height:1.2;font-weight:700;letter-spacing:-.01em;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
p{margin:0 0 14px;color:var(--ink-2);}
ul{margin:0;padding:0;list-style:none;}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(14,143,126,.22);border-color:var(--brand);}
::selection{background:var(--brand-soft);color:var(--brand-deep);}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
.section{padding:56px 0;position:relative;}
@media (min-width:640px){.section{padding:72px 0;}}
@media (min-width:1024px){.section{padding:96px 0;}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:34px;}
.section-head h2{margin:0 0 8px;}
.section-head p{margin:0;max-width:620px;font-size:15px;}
.section-eyebrow{display:inline-block;font-size:13px;font-weight:600;color:var(--brand);background:var(--brand-soft);border-radius:999px;padding:5px 14px;margin-bottom:14px;letter-spacing:.02em;}
.more-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand-deep);}
.more-link:hover{color:var(--accent);}
.more-link svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;padding:14px 28px;font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease),filter .22s var(--ease);
}
.btn svg{width:17px;height:17px;stroke:currentColor;fill:none;stroke-width:2;}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:var(--sh2);}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:var(--sh3);filter:brightness(1.06);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh1);}
.btn-accent{background:var(--grad-accent);color:#fff;box-shadow:0 10px 24px rgba(242,116,59,.28);}
.btn-accent:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 34px rgba(242,116,59,.34);filter:brightness(1.04);}
.btn-accent:active{transform:translateY(0);box-shadow:0 6px 14px rgba(242,116,59,.24);}
.btn-ghost{background:transparent;color:var(--brand-deep);border-color:rgba(14,143,126,.35);}
.btn-ghost:hover{color:var(--brand-deep);background:var(--brand-soft);border-color:var(--brand);transform:translateY(-2px);}
.btn-light{background:rgba(255,255,255,.94);color:var(--dark);}
.btn-light:hover{color:var(--dark);background:#fff;transform:translateY(-2px);box-shadow:var(--sh2);}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.95);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease);
}
.site-header.scrolled{box-shadow:var(--sh1);}
.nav-wrap{display:flex;align-items:center;gap:20px;height:72px;}
.brand{display:flex;align-items:baseline;gap:2px;font-size:19px;font-weight:800;letter-spacing:-.01em;color:var(--ink);flex-shrink:0;}
.brand:hover{color:var(--ink);}
.brand .brand-mark{color:var(--brand);margin-right:2px;}
.brand .brand-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block;margin-left:5px;transform:translateY(-3px);}
.nav-main{display:flex;align-items:center;gap:2px;margin-left:auto;}
.nav-link{position:relative;padding:9px 14px;font-size:15px;font-weight:500;color:var(--ink-2);border-radius:12px;}
.nav-link:hover{color:var(--brand);background:var(--brand-soft);}
.nav-link.active{color:var(--brand-deep);font-weight:700;}
.nav-link.active::after{content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:1px;width:20px;height:2px;border-radius:2px;background:var(--brand);}
.nav-cta{padding:12px 24px;font-size:14px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:14px;border:1px solid var(--line);
  background:#fff;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0;margin-left:auto;
}
.nav-toggle svg{width:20px;height:20px;stroke:var(--ink);fill:none;stroke-width:2;}
.nav-toggle:hover{border-color:var(--brand);}
@media (max-width:1023px){
  .nav-main,.nav-cta{display:none;}
  .nav-toggle{display:flex;}
  .nav-wrap{gap:12px;height:64px;}
}

/* 抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(12,43,39,.45);opacity:0;pointer-events:none;transition:opacity .3s var(--ease);z-index:80;}
.drawer-mask.open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);background:#fff;z-index:90;
  transform:translateX(102%);transition:transform .32s var(--ease);
  padding:24px 22px 40px;box-shadow:var(--sh3);overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.drawer-title{font-size:17px;font-weight:800;color:var(--ink);}
.drawer-close{width:38px;height:38px;border-radius:12px;border:1px solid var(--line);background:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;}
.drawer-close svg{width:18px;height:18px;stroke:var(--ink);fill:none;stroke-width:2;}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:22px;}
.drawer-nav a{padding:13px 16px;border-radius:14px;font-size:15px;font-weight:500;color:var(--ink-2);border:1px solid transparent;}
.drawer-nav a:hover{background:var(--brand-soft);color:var(--brand-deep);}
.drawer-nav a.active{background:var(--brand-soft);color:var(--brand-deep);font-weight:700;border-color:rgba(14,143,126,.25);}
.drawer .btn{width:100%;}

/* 底部 Tab */
.mobile-tabbar{display:none;}
@media (max-width:1023px){
  body{padding-bottom:calc(66px + env(safe-area-inset-bottom));}
  .mobile-tabbar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:70;
    height:calc(58px + env(safe-area-inset-bottom));
    padding-bottom:env(safe-area-inset-bottom);
    background:rgba(255,255,255,.97);
    -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
    border-top:1px solid var(--line);
  }
  .tab-item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;font-size:11px;color:var(--ink-3);position:relative;padding-top:4px;}
  .tab-item svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
  .tab-item:hover{color:var(--brand);}
  .tab-item.active{color:var(--brand);font-weight:700;}
  .tab-item.active::before{content:"";position:absolute;top:0;width:22px;height:3px;border-radius:0 0 3px 3px;background:var(--brand);}
}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;padding:44px 0 56px;background:var(--bg);}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(900px 460px at 8% -12%,rgba(14,143,126,.13),transparent 68%),radial-gradient(700px 380px at 96% 6%,rgba(245,165,36,.10),transparent 70%);pointer-events:none;}
.hero-grid{position:relative;display:grid;gap:42px;align-items:center;}
@media (min-width:1024px){
  .hero{padding:72px 0 88px;}
  .hero-grid{grid-template-columns:1.05fr .95fr;gap:60px;}
}
.hero h1{margin-bottom:18px;}
.hero-sub{font-size:clamp(16px,2vw,21px);line-height:1.7;color:var(--ink-2);max-width:560px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 22px;}
.hero-points li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-2);}
.hero-points svg{width:16px;height:16px;stroke:var(--brand);fill:none;stroke-width:2.4;flex-shrink:0;}
.hero-visual{position:relative;}
.hero-img{width:100%;aspect-ratio:5/4;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--sh2);}
.badge-float{
  background:#fff;border-radius:16px;box-shadow:var(--sh2);padding:13px 18px;
  display:inline-flex;flex-direction:column;gap:1px;position:absolute;
}
.badge-float .num{font-size:25px;font-weight:800;color:var(--brand);line-height:1.15;}
.badge-float.badge-gold .num{color:var(--badge);}
.badge-float .lbl{font-size:13px;color:var(--ink-3);white-space:nowrap;}
.badge-a{right:-6px;bottom:38px;}
.badge-b{left:-6px;top:26px;}
@media (max-width:767px){
  .badge-float{position:static;margin:12px 10px 0 0;box-shadow:var(--sh1);}
}

/* ============ 数据 ============ */
.stats-row{display:grid;gap:20px;}
@media (min-width:640px){.stats-row{grid-template-columns:repeat(3,1fr);gap:24px;}}
.stat-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px;box-shadow:var(--sh1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--sh3);border-color:rgba(14,143,126,.28);}
@media (min-width:640px){
  .stat-card:nth-child(2){margin-top:22px;}
  .stat-card:nth-child(3){margin-top:8px;}
}
.stat-num{font-size:34px;font-weight:800;line-height:1.1;color:var(--brand);letter-spacing:-.02em;margin-bottom:6px;}
.stat-num em{font-style:normal;font-size:17px;font-weight:700;margin-left:3px;color:var(--brand-mid);}
.stat-title{font-size:16px;font-weight:600;color:var(--ink);margin-bottom:6px;}
.stat-desc{font-size:14px;color:var(--ink-3);line-height:1.65;margin:0;}

/* ============ 步骤 ============ */
.steps-track{position:relative;display:grid;gap:30px;}
@media (min-width:900px){
  .steps-track{grid-template-columns:repeat(3,1fr);gap:34px;}
  .steps-track::before{
    content:"";position:absolute;top:24px;left:14%;right:14%;height:2px;
    background:linear-gradient(90deg,rgba(14,143,126,.75),rgba(14,143,126,.15));
    z-index:0;
  }
}
.step-item{position:relative;z-index:1;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:26px;box-shadow:var(--sh1);transition:transform .22s var(--ease),box-shadow .22s var(--ease);}
.step-item:hover{transform:translateY(-4px);box-shadow:var(--sh3);}
.step-num{
  width:46px;height:46px;border-radius:50%;display:grid;place-items:center;
  background:var(--grad-brand);color:#fff;font-weight:800;font-size:15px;
  box-shadow:0 8px 20px rgba(14,143,126,.28);margin-bottom:16px;
}
.step-item h3{margin-bottom:8px;}
.step-item p{font-size:15px;margin-bottom:14px;}
.step-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);}
.step-link svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:2.2;transition:transform .22s var(--ease);}
.step-link:hover{color:var(--accent);}
.step-link:hover svg{transform:translateX(3px);}
@media (max-width:899px){
  .steps-track::before{content:"";position:absolute;top:8px;bottom:8px;left:22px;width:2px;background:linear-gradient(180deg,rgba(14,143,126,.6),rgba(14,143,126,.08));}
  .step-item{margin-left:0;padding-left:62px;position:relative;}
  .step-num{position:absolute;left:0;top:26px;margin-bottom:0;background:#fff;color:var(--brand);border:2px solid var(--brand);box-shadow:none;}
}

/* ============ 案例 ============ */
.case-grid{display:grid;gap:24px;}
@media (min-width:1024px){.case-grid{grid-template-columns:1.22fr 1fr;align-items:stretch;}}
.case-main{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh1);display:flex;flex-direction:column;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.case-main:hover{transform:translateY(-4px);box-shadow:var(--sh3);}
.case-main img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.case-body{padding:26px;display:flex;flex-direction:column;gap:12px;flex:1;}
.case-meta{display:flex;flex-wrap:wrap;gap:10px;}
.chip{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;border-radius:999px;padding:5px 13px;}
.chip-brand{background:var(--brand-soft);color:var(--brand-deep);}
.chip-accent{background:var(--accent-soft);color:#B44E1E;}
.chip-gold{background:#FEF3DC;color:#8A5A06;}
.case-body h3{margin:0;font-size:21px;}
.case-body p{margin:0;font-size:15px;}
.case-facts{display:flex;flex-wrap:wrap;gap:18px;margin-top:auto;padding-top:16px;border-top:1px solid var(--line);}
.case-facts div{font-size:13px;color:var(--ink-3);}
.case-facts b{display:block;font-size:15px;font-weight:700;color:var(--ink);margin-top:2px;}
.case-side{display:grid;gap:24px;}
.case-mini{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px;box-shadow:var(--sh1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.case-mini:hover{transform:translateY(-4px);box-shadow:var(--sh3);border-color:rgba(14,143,126,.3);}
.case-mini h3{font-size:18px;margin-bottom:8px;}
.case-mini p{font-size:14.5px;margin-bottom:14px;}
.case-mini .mini-facts{display:flex;gap:16px;font-size:13px;color:var(--ink-3);}
.case-mini .mini-facts b{color:var(--brand-deep);font-weight:700;}

/* ============ 资讯 ============ */
.news-section{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.news-grid{display:grid;gap:24px;}
@media (min-width:640px){.news-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr);}}
.news-card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;
  box-shadow:var(--sh1);color:inherit;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh3);border-color:rgba(14,143,126,.3);color:inherit;}
.news-card:hover .news-title{color:var(--brand);}
.news-thumb{position:relative;overflow:hidden;background:var(--brand-soft);}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s var(--ease);}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-thumb .chip{position:absolute;left:14px;top:14px;background:rgba(255,255,255,.94);color:var(--brand-deep);box-shadow:var(--sh1);}
.news-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-title{font-size:17.5px;line-height:1.5;font-weight:600;color:var(--ink);margin:0;transition:color .22s var(--ease);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-summary{font-size:14.5px;color:var(--ink-2);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-3);}
.news-meta .time{display:inline-flex;align-items:center;gap:6px;}
.news-meta svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:1.9;}
.news-meta .go{display:inline-flex;align-items:center;gap:4px;color:var(--brand);font-weight:600;}
@media (min-width:1024px){
  .news-card.is-feature{grid-column:1/-1;flex-direction:row;}
  .news-card.is-feature .news-thumb{flex:1.05;min-height:100%;}
  .news-card.is-feature .news-thumb img{height:100%;aspect-ratio:auto;min-height:290px;}
  .news-card.is-feature .news-body{flex:1;padding:32px;justify-content:center;}
  .news-card.is-feature .news-title{font-size:24px;-webkit-line-clamp:2;}
  .news-card.is-feature .news-summary{font-size:16px;-webkit-line-clamp:3;}
}
.news-empty{
  background:var(--brand-soft);border:1px dashed rgba(14,143,126,.35);border-radius:var(--r-md);
  min-height:150px;max-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;
  color:var(--brand-deep);font-size:15px;padding:28px;text-align:center;
}
.news-empty svg{width:30px;height:30px;stroke:var(--brand);fill:none;stroke-width:1.7;}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:18px;
  margin-bottom:12px;overflow:hidden;box-shadow:var(--sh1);
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.faq-item.open{background:var(--brand-soft);border-color:rgba(14,143,126,.3);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:none;border:0;text-align:left;cursor:pointer;
  padding:20px 22px;font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq-q:hover{color:var(--brand-deep);}
.faq-q svg{width:18px;height:18px;stroke:var(--brand);fill:none;stroke-width:2.2;flex-shrink:0;transition:transform .2s var(--ease);}
.faq-item.open .faq-q svg{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);}
.faq-a-inner{padding:0 22px 22px;font-size:15.5px;line-height:1.85;color:var(--ink-2);}
.faq-a-inner p:last-child{margin-bottom:0;}

/* ============ CTA 表单 ============ */
.cta-section{padding:56px 0;}
@media (min-width:1024px){.cta-section{padding:88px 0;}}
.cta-card{
  background:linear-gradient(135deg,var(--dark) 0%,var(--brand-deep) 100%);
  border-radius:var(--r-lg);padding:34px 24px;color:#fff;box-shadow:var(--sh2);
  position:relative;overflow:hidden;
}
.cta-card::after{content:"";position:absolute;right:-120px;top:-120px;width:340px;height:340px;border-radius:50%;background:radial-gradient(circle,rgba(53,195,154,.28),transparent 68%);pointer-events:none;}
@media (min-width:768px){.cta-card{padding:52px 48px;}}
.cta-grid{position:relative;display:grid;gap:34px;}
@media (min-width:1024px){.cta-grid{grid-template-columns:1fr 1fr;gap:52px;align-items:center;}}
.cta-card h2{color:#fff;}
.cta-card p{color:rgba(255,255,255,.8);}
.cta-trust{margin-top:24px;display:flex;flex-direction:column;gap:12px;}
.cta-trust li{display:flex;align-items:center;gap:10px;font-size:14.5px;color:rgba(255,255,255,.86);}
.cta-trust svg{width:17px;height:17px;stroke:#3FD0A4;fill:none;stroke-width:2.4;flex-shrink:0;}
.cta-form{display:grid;gap:16px;}
.form-row{display:grid;gap:16px;}
@media (min-width:560px){.form-row.two{grid-template-columns:1fr 1fr;}}
.field{display:flex;flex-direction:column;gap:7px;}
.field label{font-size:13px;font-weight:600;color:rgba(255,255,255,.82);letter-spacing:.02em;}
.field input,.field textarea,.field select{
  height:52px;border-radius:14px;border:1px solid rgba(255,255,255,.28);
  background:rgba(255,255,255,.94);padding:0 16px;color:var(--ink);font-size:15px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
  width:100%;
}
.field textarea{height:auto;min-height:104px;padding:14px 16px;resize:vertical;line-height:1.7;}
.field input:focus,.field textarea:focus,.field select:focus{
  background:#fff;border-color:var(--brand);box-shadow:0 0 0 3px rgba(14,143,126,.28);outline:none;
}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-3);}
.form-actions{display:grid;gap:12px;margin-top:4px;}
@media (min-width:560px){.form-actions{grid-template-columns:auto auto;justify-content:start;}}
.form-tip{font-size:13px;color:rgba(255,255,255,.72);margin:2px 0 0;min-height:20px;}
.cta-note{font-size:13px;color:rgba(255,255,255,.62);margin:0;}

/* ============ 页脚 ============ */
.site-footer{position:relative;background:var(--dark);color:rgba(255,255,255,.7);}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad-brand);}
.footer-grid{display:grid;gap:32px;padding:56px 0 34px;}
@media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding:68px 0 40px;}}
.footer-brand{font-size:18px;font-weight:800;color:#fff;margin-bottom:12px;}
.footer-brand span{color:#3FD0A4;}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:320px;margin:0;}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.66);}
.footer-col a:hover{color:#3FD0A4;}
.footer-contact{font-size:14px;line-height:1.9;color:rgba(255,255,255,.66);}
.footer-contact b{display:block;color:#fff;font-weight:700;font-size:15px;margin-bottom:4px;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:18px 0 24px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.5);}

/* 工具类 */
.text-center{text-align:center;}
.mt-32{margin-top:32px;}

/* roulang page: category1 */
:root{
  --brand:#0E8F7E;
  --brand-deep:#0A5F55;
  --brand-mid:#12A08B;
  --brand-soft:#E4F4F0;
  --accent:#F2743B;
  --accent-soft:#FDEDE4;
  --badge:#F5A524;
  --ink:#12211F;
  --ink-2:#4B5F5B;
  --ink-3:#8A9A96;
  --line:#E2E9E6;
  --bg:#F7F8F5;
  --surface:#FFFFFF;
  --dark:#0C2B27;
  --grad-brand:linear-gradient(120deg,#0A5F55 0%,#0E8F7E 48%,#35C39A 100%);
  --grad-accent:linear-gradient(120deg,#F2743B 0%,#F5A524 100%);
  --sh1:0 2px 8px rgba(12,43,39,.06);
  --sh2:0 12px 32px rgba(12,43,39,.10);
  --sh3:0 18px 44px rgba(12,43,39,.16);
  --r-lg:28px;
  --r-md:20px;
  --r-sm:14px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:17px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand-deep);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--accent);text-decoration:none}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(14,143,126,.22);border-radius:8px}
.num{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.row-custom{display:flex;flex-wrap:wrap;margin:0 -14px}
.col-custom{padding:0 14px;width:100%}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh1)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:22px;height:72px}
.brand{
  display:inline-flex;align-items:center;gap:5px;
  font-size:19px;font-weight:800;color:var(--ink);
  letter-spacing:-.01em;white-space:nowrap;
}
.brand:hover{color:var(--ink)}
.brand-mark{
  background:var(--grad-brand);color:#fff;
  border-radius:9px;padding:3px 9px;
  font-size:16px;font-weight:800;letter-spacing:.02em;
}
.brand-dot{width:7px;height:7px;border-radius:50%;background:var(--accent);display:inline-block;margin-left:3px}
.nav-main{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;
  padding:8px 14px;
  font-size:15.5px;font-weight:500;color:var(--ink-2);
  border-radius:10px;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:var(--brand-deep);background:var(--brand-soft)}
.nav-link.active{color:var(--brand-deep);font-weight:700}
.nav-link.active::after{
  content:"";position:absolute;left:50%;transform:translateX(-50%);
  bottom:0;width:20px;height:3px;border-radius:3px;background:var(--brand);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:none;cursor:pointer;
  font-size:15.5px;font-weight:700;
  padding:12px 26px;border-radius:999px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),filter .22s var(--ease);
  white-space:nowrap;
}
.btn:active{transform:translateY(0);box-shadow:var(--sh1)}
.btn-accent{background:var(--grad-accent);color:#fff;box-shadow:0 8px 20px rgba(242,116,59,.28)}
.btn-accent:hover{color:#fff;filter:brightness(1.05);transform:translateY(-2px);box-shadow:0 14px 30px rgba(242,116,59,.34)}
.btn-brand{background:var(--grad-brand);color:#fff;box-shadow:0 8px 20px rgba(14,143,126,.26)}
.btn-brand:hover{color:#fff;filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 14px 32px rgba(14,143,126,.32)}
.btn-ghost{background:transparent;color:var(--brand-deep);border:1.5px solid rgba(14,143,126,.4)}
.btn-ghost:hover{color:var(--brand-deep);background:var(--brand-soft);border-color:var(--brand);transform:translateY(-2px)}
.btn-ghost-light{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.6)}
.btn-ghost-light:hover{color:#fff;background:rgba(255,255,255,.14);border-color:#fff;transform:translateY(-2px)}
.btn-lg{font-size:17px;padding:16px 40px}
.nav-cta{padding:11px 24px;font-size:15px}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;
  background:var(--brand-soft);border:1px solid var(--line);color:var(--brand-deep);
  cursor:pointer;
}
.nav-toggle svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:2}

/* ===== 移动抽屉 ===== */
.drawer{
  position:fixed;inset:0 0 0 auto;width:min(84vw,340px);
  background:#fff;z-index:120;
  transform:translateX(102%);
  transition:transform .3s var(--ease);
  box-shadow:-18px 0 44px rgba(12,43,39,.16);
  padding:22px 22px 40px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(12,43,39,.42);
  z-index:110;opacity:0;visibility:hidden;transition:opacity .3s var(--ease),visibility .3s;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-close{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--line);
  background:#fff;color:var(--ink-2);cursor:pointer;font-size:20px;line-height:1;
}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:15px 16px;border-radius:14px;
  font-size:16px;font-weight:600;color:var(--ink);
  border:1px solid var(--line);margin-bottom:10px;background:#fff;
}
.drawer-link:hover{background:var(--brand-soft);color:var(--brand-deep);border-color:rgba(14,143,126,.35)}
.drawer-link.active{background:var(--brand-soft);color:var(--brand-deep);border-color:var(--brand)}
.drawer-cta{margin-top:16px;width:100%}

/* ===== 移动底部 Tab ===== */
.mobile-tabbar{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  background:rgba(255,255,255,.97);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
.tab-item{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:3px;height:56px;font-size:11.5px;color:var(--ink-3);font-weight:500;
  position:relative;
}
.tab-item svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.tab-item.active{color:var(--brand-deep);font-weight:700}
.tab-item.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:22px;height:3px;border-radius:0 0 4px 4px;background:var(--brand);
}

/* ===== 通用板块 ===== */
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{max-width:760px;margin-bottom:44px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:7px;
  font-size:13px;font-weight:700;letter-spacing:.06em;
  color:var(--brand-deep);background:var(--brand-soft);
  padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand)}
h1{font-size:clamp(30px,5vw,52px);line-height:1.15;font-weight:800;letter-spacing:-.02em}
h2{font-size:clamp(23px,3.2vw,34px);line-height:1.2;font-weight:700;letter-spacing:-.015em}
h3{font-size:20px;line-height:1.4;font-weight:600}
.section-desc{margin-top:14px;color:var(--ink-2);font-size:16.5px;max-width:760px}

/* ===== Hero ===== */
.hero{
  position:relative;
  padding:76px 0 84px;
  background-image:linear-gradient(120deg,rgba(10,95,85,.94) 0%,rgba(14,143,126,.90) 52%,rgba(53,195,154,.86) 100%),url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  color:#fff;
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;right:-160px;top:-140px;width:460px;height:460px;
  border-radius:50%;background:rgba(255,255,255,.08);pointer-events:none;
}
.hero-grid{display:flex;flex-wrap:wrap;align-items:center;gap:44px;position:relative;z-index:2}
.hero-copy{flex:1 1 520px;min-width:0}
.hero h1{color:#fff}
.hero-sub{
  margin-top:18px;font-size:clamp(17px,1.9vw,21px);line-height:1.7;
  color:rgba(255,255,255,.88);max-width:600px;
}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-meta{display:flex;flex-wrap:wrap;gap:22px;margin-top:30px}
.hero-meta-item{display:flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.86)}
.hero-meta-item svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2;flex:none}
.hero-panel{
  flex:0 1 380px;min-width:290px;
  background:rgba(255,255,255,.97);
  border-radius:var(--r-lg);
  padding:26px 26px 22px;
  box-shadow:var(--sh2);
  color:var(--ink);
}
.hero-panel h3{font-size:17px;margin-bottom:16px;color:var(--ink)}
.hero-panel ul li{
  display:flex;align-items:flex-start;gap:10px;
  padding:11px 0;border-bottom:1px dashed var(--line);
  font-size:15px;color:var(--ink-2);
}
.hero-panel ul li:last-child{border-bottom:none;padding-bottom:4px}
.hero-panel ul li b{color:var(--ink);font-weight:700}
.dot-num{
  flex:none;width:22px;height:22px;border-radius:50%;
  background:var(--brand-soft);color:var(--brand-deep);
  font-size:12px;font-weight:800;display:flex;align-items:center;justify-content:center;
  margin-top:4px;
}

/* ===== 大入口按钮卡 ===== */
.section-entry{padding:56px 0 8px}
.entry-card{
  background:var(--grad-brand);
  border-radius:var(--r-lg);
  padding:38px 40px;
  display:flex;flex-wrap:wrap;align-items:center;gap:28px;
  color:#fff;
  box-shadow:0 22px 50px rgba(10,95,85,.24);
  position:relative;overflow:hidden;
}
.entry-card::after{
  content:"";position:absolute;right:-90px;bottom:-120px;width:300px;height:300px;
  border-radius:50%;background:rgba(255,255,255,.10);
}
.entry-icon{
  flex:none;width:66px;height:66px;border-radius:20px;
  background:rgba(255,255,255,.18);
  display:flex;align-items:center;justify-content:center;
}
.entry-icon svg{width:32px;height:32px;fill:none;stroke:#fff;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.entry-text{flex:1 1 340px;min-width:0;position:relative;z-index:2}
.entry-text h2{color:#fff;font-size:clamp(20px,2.6vw,27px)}
.entry-text p{margin-top:10px;font-size:15.5px;color:rgba(255,255,255,.9);max-width:620px}
.entry-action{position:relative;z-index:2}

/* ===== 快捷入口栅格 ===== */
.quick-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.quick-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:26px;
  box-shadow:var(--sh1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
  display:flex;flex-direction:column;gap:12px;
}
.quick-card:hover{transform:translateY(-4px);box-shadow:var(--sh3);border-color:rgba(14,143,126,.35)}
.quick-top{display:flex;align-items:center;gap:14px}
.quick-icon{
  flex:none;width:48px;height:48px;border-radius:14px;
  background:var(--brand-soft);color:var(--brand-deep);
  display:flex;align-items:center;justify-content:center;
}
.quick-icon svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.quick-card h3{font-size:18px}
.quick-card p{font-size:15px;color:var(--ink-2);line-height:1.75}
.quick-link{
  margin-top:auto;display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:700;color:var(--brand-deep);
}
.quick-link svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2.2;transition:transform .22s var(--ease)}
.quick-card:hover .quick-link svg{transform:translateX(4px)}

/* ===== 图文识别区 ===== */
.identify{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.identify-grid{display:flex;flex-wrap:wrap;align-items:center;gap:52px}
.identify-media{flex:1 1 420px;min-width:280px}
.identify-media img{
  width:100%;border-radius:var(--r-lg);box-shadow:var(--sh2);
  aspect-ratio:16/11;object-fit:cover;
}
.identify-copy{flex:1 1 440px;min-width:280px}
.identify-list{margin-top:24px;display:grid;gap:14px}
.identify-item{
  display:flex;gap:14px;padding:16px 18px;
  background:var(--bg);border:1px solid var(--line);border-radius:var(--r-sm);
}
.identify-item .tick{
  flex:none;width:24px;height:24px;border-radius:50%;
  background:var(--brand);display:flex;align-items:center;justify-content:center;margin-top:3px;
}
.identify-item .tick svg{width:14px;height:14px;fill:none;stroke:#fff;stroke-width:3;stroke-linecap:round;stroke-linejoin:round}
.identify-item h4{font-size:16px;font-weight:700;color:var(--ink)}
.identify-item p{font-size:14.5px;color:var(--ink-2);margin-top:4px;line-height:1.7}

/* ===== 三步核对 ===== */
.check-track{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;position:relative}
.check-step{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:28px 26px;box-shadow:var(--sh1);position:relative;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.check-step:hover{transform:translateY(-4px);box-shadow:var(--sh3)}
.step-num{
  width:52px;height:52px;border-radius:16px;
  background:var(--grad-brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:19px;font-weight:800;letter-spacing:.02em;
  margin-bottom:18px;
}
.check-step h3{font-size:18px;margin-bottom:10px}
.check-step p{font-size:15px;color:var(--ink-2);line-height:1.78}
.check-step .step-tip{
  margin-top:16px;font-size:13.5px;color:var(--brand-deep);
  background:var(--brand-soft);border-radius:10px;padding:9px 12px;font-weight:600;
}

/* ===== FAQ ===== */
.faq-section{background:var(--bg)}
.accordion{border:none;background:transparent;max-width:860px;margin:0 auto}
.accordion .accordion-item{
  border:1px solid var(--line);background:var(--surface);
  border-radius:18px;margin-bottom:12px;overflow:hidden;box-shadow:var(--sh1);
  transition:border-color .22s var(--ease),background .22s var(--ease),box-shadow .22s var(--ease);
}
.accordion .accordion-item.is-active{background:var(--brand-soft);border-color:rgba(14,143,126,.32);box-shadow:var(--sh2)}
.accordion .accordion-title{
  display:block;position:relative;
  padding:20px 60px 20px 24px;
  font-size:17px;font-weight:600;color:var(--ink);
  border:none;background:transparent;line-height:1.6;
}
.accordion .accordion-title::before{
  content:"";position:absolute;right:26px;top:50%;
  width:9px;height:9px;border-right:2px solid var(--brand);border-bottom:2px solid var(--brand);
  transform:translateY(-70%) rotate(45deg);
  transition:transform .22s var(--ease);
}
.accordion .accordion-item.is-active .accordion-title::before{transform:translateY(-30%) rotate(-135deg)}
.accordion .accordion-content{
  padding:0 24px 22px;border:none;background:transparent;
  font-size:15.5px;line-height:1.85;color:var(--ink-2);
}
.accordion .accordion-content p{margin-bottom:10px}
.accordion .accordion-content p:last-child{margin-bottom:0}

/* ===== 深色 CTA ===== */
.cta-band{
  background:linear-gradient(135deg,var(--dark) 0%,var(--brand-deep) 100%);
  border-radius:var(--r-lg);
  padding:52px 48px;
  color:#fff;position:relative;overflow:hidden;
  box-shadow:0 24px 60px rgba(12,43,39,.26);
}
.cta-band::before{
  content:"";position:absolute;left:-120px;top:-140px;width:360px;height:360px;
  border-radius:50%;background:rgba(53,195,154,.16);
}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:36px;align-items:center;justify-content:space-between}
.cta-copy{flex:1 1 460px;min-width:280px}
.cta-copy h2{color:#fff}
.cta-copy p{margin-top:14px;color:rgba(255,255,255,.82);font-size:16px;max-width:600px}
.cta-actions{display:flex;flex-direction:column;gap:16px;min-width:220px}
.trust-row{display:flex;flex-wrap:wrap;gap:18px}
.trust-item{display:flex;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.78)}
.trust-item svg{width:16px;height:16px;fill:none;stroke:var(--brand-mid);stroke-width:2.2;flex:none}

/* ===== 页脚 ===== */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);margin-top:0;position:relative}
.site-footer::before{content:"";display:block;height:4px;background:var(--grad-brand)}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:38px;
  padding:66px 0 44px;
}
.footer-brand{font-size:19px;font-weight:800;color:#fff;margin-bottom:16px}
.footer-brand span{color:var(--brand-mid)}
.footer-desc{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.62);max-width:330px}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px}
.footer-col ul li{margin-bottom:11px}
.footer-col ul li a{font-size:14.5px;color:rgba(255,255,255,.68)}
.footer-col ul li a:hover{color:var(--brand-mid)}
.footer-contact{font-size:14px;line-height:2;color:rgba(255,255,255,.62)}
.footer-contact b{color:#fff;font-weight:700;display:block;margin-bottom:8px;font-size:14.5px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 26px;display:flex;flex-wrap:wrap;gap:12px;
  justify-content:space-between;font-size:13px;color:rgba(255,255,255,.5);
}

/* ===== 响应式 ===== */
@media (max-width:1023.98px){
  body{padding-bottom:calc(64px + env(safe-area-inset-bottom))}
  .nav-main,.nav-cta{display:none}
  .nav-toggle{display:inline-flex}
  .mobile-tabbar{display:flex}
  .section{padding:72px 0}
  .section-tight{padding:56px 0}
  .hero{padding:60px 0 68px}
  .quick-grid{grid-template-columns:repeat(2,1fr)}
  .check-track{grid-template-columns:1fr;gap:16px}
  .check-step{display:flex;gap:18px;align-items:flex-start;padding:22px}
  .step-num{margin-bottom:0;flex:none;width:46px;height:46px;font-size:17px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;padding:52px 0 34px}
  .cta-band{padding:40px 30px}
  .entry-card{padding:32px 28px}
}
@media (max-width:639.98px){
  body{font-size:16px}
  .container{padding:0 16px}
  .brand{font-size:16.5px}
  .brand-mark{font-size:14.5px;padding:2px 7px}
  .section{padding:56px 0}
  .section-head{margin-bottom:30px}
  .quick-grid{grid-template-columns:1fr}
  .hero{padding:48px 0 56px}
  .hero-btns .btn{width:100%}
  .hero-panel{padding:22px 20px}
  .entry-card{padding:26px 22px;gap:18px}
  .entry-icon{width:54px;height:54px}
  .entry-action .btn{width:100%}
  .identify-grid{gap:30px}
  .accordion .accordion-title{font-size:16px;padding:17px 52px 17px 18px}
  .accordion .accordion-content{padding:0 18px 18px;font-size:15px}
  .cta-band{padding:34px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding:44px 0 28px}
  .footer-bottom{flex-direction:column;gap:6px}
}

/* roulang page: article */
:root{
  --brand:#0E8F7E;
  --brand-deep:#0A5F55;
  --brand-mid:#12A08B;
  --brand-soft:#E4F4F0;
  --accent:#F2743B;
  --accent-soft:#FDEDE4;
  --badge:#F5A524;
  --ink:#12211F;
  --ink-2:#4B5F5B;
  --ink-3:#8A9A96;
  --line:#E2E9E6;
  --bg:#F7F8F5;
  --surface:#FFFFFF;
  --dark:#0C2B27;
  --grad-brand:linear-gradient(120deg,#0A5F55 0%,#0E8F7E 48%,#35C39A 100%);
  --grad-accent:linear-gradient(120deg,#F2743B 0%,#F5A524 100%);
  --sh1:0 2px 8px rgba(12,43,39,.06);
  --sh2:0 12px 32px rgba(12,43,39,.10);
  --sh3:0 18px 44px rgba(12,43,39,.16);
  --r-lg:28px;
  --r-md:20px;
  --r-sm:16px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;height:auto;display:block;border-style:none}
a{color:var(--brand-deep);text-decoration:none;transition:color .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease)}
a:hover{color:var(--accent)}
button{font:inherit;cursor:pointer;border:0;background:none}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0}
:focus-visible{outline:3px solid rgba(14,143,126,.22);outline-offset:2px;border-radius:8px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand-deep);color:#fff;padding:10px 18px;border-radius:0 0 12px 0;z-index:200}
.skip-link:focus{left:0;color:#fff}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;white-space:nowrap;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.btn:active{transform:translateY(0);box-shadow:var(--sh1)}
.btn-accent{background:var(--grad-accent);color:#fff;box-shadow:0 8px 20px rgba(242,116,59,.26)}
.btn-accent:hover{color:#fff;transform:translateY(-2px);box-shadow:0 14px 28px rgba(242,116,59,.32)}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 8px 20px rgba(14,143,126,.24)}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(14,143,126,.3)}
.btn-ghost{background:transparent;color:var(--brand-deep);border-color:var(--line);background-color:var(--surface)}
.btn-ghost:hover{color:var(--accent);border-color:var(--accent);transform:translateY(-2px);box-shadow:var(--sh1)}
.btn-sm{padding:9px 18px;font-size:14px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh1)}
.nav-wrap{display:flex;align-items:center;gap:22px;height:72px}
.brand{
  display:inline-flex;align-items:center;gap:8px;
  font-size:19px;font-weight:800;color:var(--ink);letter-spacing:-.01em;white-space:nowrap;
}
.brand:hover{color:var(--ink)}
.brand-mark{
  display:inline-block;background:var(--grad-brand);color:#fff;
  border-radius:10px;padding:3px 9px;font-size:15px;font-weight:800;letter-spacing:0;
}
.brand-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block}
.nav-main{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{
  position:relative;display:inline-block;padding:9px 13px;border-radius:10px;
  font-size:15px;color:var(--ink-2);font-weight:500;
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.active{color:var(--brand-deep);font-weight:700}
.nav-link.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:3px;border-radius:3px;
  background:var(--grad-brand);
}
.nav-cta{margin-left:10px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  align-items:center;justify-content:center;background:var(--surface);
}
.nav-toggle svg{width:22px;height:22px;fill:none;stroke:var(--ink);stroke-width:1.8}
.nav-toggle:hover{border-color:var(--brand)}

/* ============ 文章头部 ============ */
.article-hero{
  position:relative;
  padding:46px 0 48px;
  color:#fff;
  background-image:linear-gradient(120deg,rgba(10,95,85,.93) 0%,rgba(14,143,126,.88) 55%,rgba(53,195,154,.82) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover,cover;
  background-position:center,center;
  background-repeat:no-repeat,no-repeat;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.78);margin-bottom:20px}
.breadcrumb a{color:rgba(255,255,255,.86)}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{color:rgba(255,255,255,.5)}
.breadcrumb .current{color:rgba(255,255,255,.72);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-cat-badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;font-size:13px;font-weight:600;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);color:#fff;
  margin-bottom:16px;
}
.article-cat-badge i{width:6px;height:6px;border-radius:50%;background:var(--badge);display:inline-block}
.article-title{
  font-size:clamp(26px,3.6vw,40px);line-height:1.24;font-weight:800;letter-spacing:-.02em;
  max-width:900px;color:#fff;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  margin-top:20px;font-size:14px;color:rgba(255,255,255,.8);
}
.article-meta span{display:inline-flex;align-items:center;gap:7px}
.article-meta svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.7}

/* ============ 主体布局 ============ */
.article-main{padding:56px 0 72px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:40px;align-items:start}
.article-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh1);padding:42px 44px;
}
.article-body{max-width:760px}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 20px;font-size:17px;line-height:1.9;color:var(--ink-2)}
.article-body h2{
  position:relative;font-size:clamp(21px,2.4vw,27px);line-height:1.35;font-weight:700;color:var(--ink);
  margin:40px 0 16px;padding-top:6px;
}
.article-body h2::before{
  content:"";display:block;width:28px;height:4px;border-radius:4px;background:var(--grad-brand);margin-bottom:14px;
}
.article-body h3{font-size:20px;line-height:1.4;font-weight:600;color:var(--ink);margin:28px 0 12px}
.article-body h4{font-size:17px;font-weight:600;color:var(--ink);margin:22px 0 10px}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:22px}
.article-body li{font-size:17px;line-height:1.85;color:var(--ink-2);margin-bottom:8px}
.article-body ul li::marker{color:var(--brand)}
.article-body ol li::marker{color:var(--brand);font-weight:700}
.article-body blockquote{
  margin:24px 0;padding:20px 24px;background:var(--brand-soft);
  border-left:4px solid var(--brand);border-radius:0 16px 16px 0;
  color:var(--ink-2);font-size:16px;line-height:1.85;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:18px;margin:24px 0;width:100%}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left;color:var(--ink-2)}
.article-body th{background:var(--brand-soft);color:var(--brand-deep);font-weight:600}
.article-body code{
  background:var(--brand-soft);color:var(--brand-deep);padding:2px 7px;border-radius:6px;font-size:14px;
}
.article-body pre{
  background:var(--dark);color:#DCEBE7;padding:20px 22px;border-radius:16px;overflow-x:auto;
  font-size:14px;line-height:1.7;margin:24px 0;
}
.article-body pre code{background:none;color:inherit;padding:0}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.article-body a{color:var(--brand-deep);border-bottom:1px solid rgba(14,143,126,.35)}
.article-body a:hover{color:var(--accent);border-bottom-color:var(--accent)}

/* 空态 */
.empty-state{
  text-align:center;padding:56px 24px;background:var(--brand-soft);border-radius:var(--r-md);
  border:1px dashed rgba(14,143,126,.3);
}
.empty-state svg{width:44px;height:44px;fill:none;stroke:var(--brand);stroke-width:1.6;margin:0 auto 16px}
.empty-state h2{font-size:22px;font-weight:700;color:var(--ink);margin-bottom:10px}
.empty-state h2::before{display:none}
.empty-state p{color:var(--ink-2);font-size:15px;margin-bottom:22px}
.empty-state .btn{margin:0 auto}

/* 标签 */
.tag-block{margin-top:38px;padding-top:28px;border-top:1px solid var(--line)}
.tag-block h3{font-size:15px;font-weight:600;color:var(--ink-3);margin-bottom:14px;letter-spacing:.02em}
.tag-list{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;padding:7px 15px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-deep);font-size:13px;font-weight:600;
  border:1px solid rgba(14,143,126,.16);
}
.tag:hover{background:var(--brand);color:#fff;border-color:var(--brand)}

/* 文末双卡 */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:34px}
.post-nav-card{
  display:block;padding:22px 24px;border-radius:var(--r-md);border:1px solid var(--line);
  background:var(--surface);box-shadow:var(--sh1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.post-nav-card:hover{transform:translateY(-4px);box-shadow:var(--sh3);border-color:rgba(14,143,126,.35)}
.post-nav-card span{display:block;font-size:13px;color:var(--ink-3);margin-bottom:6px}
.post-nav-card strong{display:block;font-size:16px;font-weight:600;color:var(--ink)}
.post-nav-card:hover strong{color:var(--brand-deep)}

/* ============ 侧栏 ============ */
.article-aside{position:sticky;top:96px;display:flex;flex-direction:column;gap:22px}
.aside-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh1);padding:24px;
}
.aside-card h3{
  font-size:15px;font-weight:700;color:var(--ink);margin-bottom:16px;
  display:flex;align-items:center;gap:8px;
}
.aside-card h3::before{content:"";width:16px;height:3px;border-radius:3px;background:var(--grad-brand)}
.toc-list{display:flex;flex-direction:column;gap:4px}
.toc-link{
  display:block;font-size:14px;color:var(--ink-2);padding:7px 10px;border-radius:10px;
  border-left:2px solid transparent;line-height:1.55;
}
.toc-link:hover{background:var(--brand-soft);color:var(--brand-deep);border-left-color:var(--brand)}
.aside-list{display:flex;flex-direction:column;gap:2px}
.aside-list a{
  display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-2);
  padding:9px 10px;border-radius:10px;line-height:1.5;
}
.aside-list a::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--brand-mid);flex:0 0 auto}
.aside-list a:hover{background:var(--brand-soft);color:var(--brand-deep)}
.aside-cta{
  background:var(--grad-brand);border:0;color:#fff;box-shadow:var(--sh2);
}
.aside-cta h3{color:#fff}
.aside-cta h3::before{background:var(--badge)}
.aside-cta p{font-size:14px;line-height:1.75;color:rgba(255,255,255,.88);margin-bottom:18px}
.aside-cta .btn{width:100%;background:#fff;color:var(--brand-deep)}
.aside-cta .btn:hover{color:var(--accent);transform:translateY(-2px)}

/* ============ 相关推荐 ============ */
.related-section{padding:0 0 80px}
.related-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.related-head h2{font-size:clamp(21px,2.6vw,28px);font-weight:700;color:var(--ink)}
.related-head p{font-size:14px;color:var(--ink-3);margin-top:6px}
.related-row{margin-left:-12px;margin-right:-12px}
.related-row > .column{padding-left:12px;padding-right:12px;margin-bottom:24px}
.rc-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--sh1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.rc-card:hover{transform:translateY(-4px);box-shadow:var(--sh3);border-color:rgba(14,143,126,.3)}
.rc-thumb{position:relative;aspect-ratio:16/9;background:var(--brand-soft);overflow:hidden}
.rc-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.rc-card:hover .rc-thumb img{transform:scale(1.04)}
.rc-thumb .rc-cat{
  position:absolute;left:14px;top:14px;padding:4px 12px;border-radius:999px;
  background:rgba(255,255,255,.94);color:var(--brand-deep);font-size:12px;font-weight:600;
}
.rc-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.rc-body h3{font-size:17px;font-weight:600;line-height:1.5;color:var(--ink);margin-bottom:10px}
.rc-card:hover .rc-body h3{color:var(--brand-deep)}
.rc-body p{font-size:14px;line-height:1.75;color:var(--ink-2);margin-bottom:16px}
.rc-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-3)}
.rc-foot .arrow{color:var(--brand);font-weight:700}

/* ============ 底部 CTA ============ */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,var(--dark) 0%,var(--brand-deep) 62%,#0E8F7E 100%);
  color:#fff;padding:72px 0;
}
.cta-band::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(53,195,154,.35) 0%,rgba(53,195,154,0) 68%);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center}
.cta-inner h2{font-size:clamp(23px,3vw,34px);font-weight:700;line-height:1.25;margin-bottom:14px}
.cta-inner p{font-size:15px;line-height:1.85;color:rgba(255,255,255,.82);max-width:560px}
.cta-points{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:22px;font-size:14px;color:rgba(255,255,255,.86)}
.cta-points span{display:inline-flex;align-items:center;gap:7px}
.cta-points svg{width:16px;height:16px;fill:none;stroke:var(--badge);stroke-width:2}
.cta-actions{display:flex;flex-direction:column;align-items:flex-start;gap:14px}
.cta-actions .btn{width:100%;justify-content:center}
.cta-actions .hint{font-size:13px;color:rgba(255,255,255,.66)}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;background:var(--dark);color:rgba(255,255,255,.72);
  padding:0 0 26px;font-size:14px;
}
.site-footer::before{
  content:"";display:block;height:3px;width:100%;
  background:linear-gradient(90deg,#0A5F55,#0E8F7E,#35C39A,#F5A524);
  margin-bottom:56px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand{font-size:19px;font-weight:800;color:#fff;margin-bottom:14px}
.footer-brand span{color:#35C39A;margin-left:4px}
.footer-desc{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.62);max-width:330px}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.footer-col ul a{font-size:13.5px;color:rgba(255,255,255,.68)}
.footer-col ul a:hover{color:#35C39A}
.footer-contact{font-size:13.5px;line-height:2;color:rgba(255,255,255,.6)}
.footer-contact b{display:block;color:#fff;font-weight:600;margin-bottom:4px}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ============ 移动底部 Tab ============ */
.mobile-tab{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:90;
  background:rgba(255,255,255,.97);backdrop-filter:blur(10px);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -4px 20px rgba(12,43,39,.07);
}
.mobile-tab .tab-inner{display:flex;height:56px}
.mobile-tab a{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--ink-3);position:relative;
}
.mobile-tab a svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.mobile-tab a.active{color:var(--brand-deep);font-weight:600}
.mobile-tab a.active::before{
  content:"";position:absolute;top:0;width:22px;height:3px;border-radius:0 0 3px 3px;background:var(--grad-brand);
}

/* ============ 响应式 ============ */
@media screen and (max-width:1023px){
  .nav-main{
    position:fixed;top:72px;left:0;right:0;z-index:70;
    flex-direction:column;align-items:stretch;gap:4px;margin:0;
    background:#fff;border-bottom:1px solid var(--line);
    padding:16px 20px 22px;box-shadow:var(--sh2);
    display:none;
  }
  .nav-main.open{display:flex}
  .nav-link{padding:13px 14px;font-size:16px;border-radius:12px}
  .nav-link.active::after{display:none}
  .nav-link.active{background:var(--brand-soft)}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .nav-cta{margin-left:0;order:-1}
  .nav-wrap{gap:12px}
  .brand{font-size:17px}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px}
  .article-aside{position:static}
  .cta-inner{grid-template-columns:1fr;gap:30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .mobile-tab{display:block}
  body{padding-bottom:calc(56px + env(safe-area-inset-bottom))}
  .article-main{padding:44px 0 56px}
  .article-card{padding:32px 28px}
  .article-body p,.article-body li{font-size:16.5px}
  .cta-band{padding:56px 0}
}
@media screen and (max-width:767px){
  .article-hero{padding:34px 0 36px}
  .article-meta{gap:8px 16px;font-size:13px}
  .article-card{padding:26px 20px;border-radius:22px}
  .article-body p,.article-body li{font-size:16px;line-height:1.85}
  .post-nav{grid-template-columns:1fr}
  .related-head{flex-direction:column;align-items:flex-start;gap:10px}
  .related-section{padding-bottom:56px}
  .cta-actions{width:100%}
  .site-footer::before{margin-bottom:40px}
}
@media screen and (max-width:519px){
  .container{padding:0 16px}
  .brand{font-size:15.5px;gap:6px}
  .brand-mark{padding:2px 7px;font-size:13px}
  .article-title{font-size:24px}
  .article-card{padding:22px 16px;border-radius:20px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;gap:6px}
  .mobile-tab a{font-size:10px}
}

/* roulang page: category2 */
:root{
  --brand:#0E8F7E;
  --brand-deep:#0A5F55;
  --brand-mid:#12A08B;
  --brand-soft:#E4F4F0;
  --accent:#F2743B;
  --accent-soft:#FDEDE4;
  --badge:#F5A524;
  --ink:#12211F;
  --ink-2:#4B5F5B;
  --ink-3:#8A9A96;
  --line:#E2E9E6;
  --bg:#F7F8F5;
  --surface:#FFFFFF;
  --dark:#0C2B27;
  --grad-brand:linear-gradient(120deg,#0A5F55 0%,#0E8F7E 48%,#35C39A 100%);
  --grad-accent:linear-gradient(120deg,#F2743B 0%,#F5A524 100%);
  --sh1:0 2px 8px rgba(12,43,39,.06);
  --sh2:0 12px 32px rgba(12,43,39,.10);
  --sh3:0 18px 44px rgba(12,43,39,.16);
  --r-lg:28px;
  --r-md:20px;
  --r-sm:16px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
@media (min-width:1024px){body{font-size:17px;}}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-deep);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--accent);text-decoration:none;}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-0.01em;}
h1{font-size:clamp(30px,5vw,52px);line-height:1.15;font-weight:800;letter-spacing:-0.02em;}
h2{font-size:clamp(23px,3.2vw,34px);line-height:1.2;font-weight:700;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button,input,textarea,select{font:inherit;color:inherit;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(14,143,126,.22);border-color:var(--brand);border-radius:14px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
.section{padding:56px 0;}
@media (min-width:640px){.section{padding:72px 0;}}
@media (min-width:1024px){.section{padding:96px 0;}}
.section-head{max-width:760px;margin-bottom:32px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head h2{margin-bottom:12px;}
.section-head p{color:var(--ink-2);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--brand-deep);background:var(--brand-soft);
  padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(150%) blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh1);}
.nav-wrap{display:flex;align-items:center;gap:20px;height:72px;}
.brand{
  display:inline-flex;align-items:center;gap:6px;
  font-size:19px;font-weight:800;color:var(--ink);
  letter-spacing:-0.01em;white-space:nowrap;
}
.brand:hover{color:var(--ink);}
.brand-mark{
  display:inline-block;background:var(--grad-brand);color:#fff;
  font-size:14px;font-weight:800;padding:4px 9px;border-radius:9px;
  letter-spacing:.02em;
}
.brand-dot{width:7px;height:7px;border-radius:50%;background:var(--accent);display:inline-block;}
.nav-main{margin-left:auto;display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;display:inline-block;
  padding:9px 13px;border-radius:10px;
  font-size:15px;color:var(--ink-2);
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-link:hover{color:var(--brand-deep);background:var(--brand-soft);}
.nav-link.active{color:var(--brand-deep);font-weight:600;}
.nav-link.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:3px;
  border-radius:2px;background:var(--brand);
}
.nav-cta{margin-left:10px;flex:0 0 auto;}
.nav-toggle{
  display:none;margin-left:auto;width:44px;height:44px;border-radius:12px;
  background:var(--brand-soft);border:1px solid var(--line);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle svg{width:22px;height:22px;fill:none;stroke:var(--brand-deep);stroke-width:1.8;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease);
}
.btn:active{transform:translateY(0);box-shadow:none;}
.btn-accent{background:var(--grad-accent);color:#fff;box-shadow:0 8px 20px rgba(242,116,59,.28);}
.btn-accent:hover{color:#fff;transform:translateY(-2px);box-shadow:0 14px 28px rgba(242,116,59,.34);filter:brightness(1.04);}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 8px 20px rgba(14,143,126,.24);}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 14px 28px rgba(14,143,126,.3);filter:brightness(1.04);}
.btn-ghost{background:#fff;color:var(--brand-deep);border-color:var(--line);box-shadow:var(--sh1);}
.btn-ghost:hover{color:var(--brand-deep);border-color:var(--brand);transform:translateY(-2px);box-shadow:var(--sh2);}
.btn-block{width:100%;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:
    linear-gradient(120deg,rgba(10,95,85,.92),rgba(14,143,126,.86) 55%,rgba(53,195,154,.80)),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  color:#fff;
  padding:52px 0 64px;
}
.hero::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;
  background:radial-gradient(circle,rgba(53,195,154,.45),transparent 68%);pointer-events:none;
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1fr;gap:36px;align-items:center;
}
.hero-copy .eyebrow{background:rgba(255,255,255,.18);color:#fff;}
.hero-copy .eyebrow::before{background:#fff;}
.hero h1{color:#fff;margin-bottom:16px;max-width:15em;}
.hero-sub{
  font-size:17px;line-height:1.75;color:rgba(255,255,255,.9);
  max-width:620px;margin-bottom:26px;
}
@media (min-width:768px){.hero-sub{font-size:18px;}}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px;}
.hero-actions .btn-ghost{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.5);color:#fff;box-shadow:none;}
.hero-actions .btn-ghost:hover{background:rgba(255,255,255,.24);color:#fff;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 22px;}
.hero-points li{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;color:rgba(255,255,255,.86);
}
.hero-points li::before{
  content:"";width:16px;height:16px;border-radius:50%;
  background:rgba(255,255,255,.22);
  box-shadow:inset 0 0 0 2px rgba(255,255,255,.7);
}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;height:280px;object-fit:cover;border-radius:var(--r-lg);
  box-shadow:0 22px 50px rgba(6,32,29,.35);
}
@media (min-width:640px){.hero-visual img{height:340px;}}
@media (min-width:1024px){
  .hero{padding:76px 0 92px;}
  .hero-grid{grid-template-columns:1.15fr 1fr;gap:56px;}
  .hero-visual img{height:420px;}
}
.hero-tag{
  position:absolute;left:18px;bottom:18px;
  background:rgba(12,43,39,.72);color:#fff;
  font-size:13px;font-weight:600;padding:8px 14px;border-radius:999px;
  border:1px solid rgba(255,255,255,.22);
}

/* ---------- 数据徽章行 ---------- */
.stats-strip{margin-top:-38px;position:relative;z-index:5;}
.stats-inner{
  display:grid;grid-template-columns:1fr;gap:16px;
}
@media (min-width:700px){.stats-inner{grid-template-columns:repeat(3,1fr);gap:22px;}}
.stat-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px 24px;box-shadow:var(--sh2);
  display:flex;flex-direction:column;gap:4px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--sh3);}
@media (min-width:700px){
  .stat-card:nth-child(2){transform:translateY(14px);}
  .stat-card:nth-child(2):hover{transform:translateY(10px);}
}
.stat-num{
  font-size:28px;font-weight:800;line-height:1.1;color:var(--brand-deep);
  font-variant-numeric:tabular-nums;letter-spacing:-0.02em;
}
.stat-card.highlight .stat-num{color:var(--badge);}
.stat-label{font-size:13px;color:var(--ink-3);}

/* ---------- 场景标签行 ---------- */
.tag-bar{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:center;
  padding:26px 0 0;
}
.tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:999px;font-size:14px;font-weight:600;
  background:var(--surface);border:1px solid var(--line);color:var(--ink-2);
  box-shadow:var(--sh1);
  transition:all .22s var(--ease);
}
.tag:hover{color:var(--brand-deep);border-color:var(--brand);transform:translateY(-2px);}
.tag i{width:8px;height:8px;border-radius:50%;background:var(--brand);display:inline-block;}
.tag.accent i{background:var(--accent);}
.tag.gold i{background:var(--badge);}

/* ---------- 场景大卡（左右交替） ---------- */
.scene{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh1);overflow:hidden;margin-bottom:28px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.scene:hover{transform:translateY(-4px);box-shadow:var(--sh3);}
.scene-inner{display:grid;grid-template-columns:1fr;}
.scene-media{position:relative;overflow:hidden;}
.scene-media img{width:100%;height:220px;object-fit:cover;transition:transform .45s var(--ease);}
@media (min-width:640px){.scene-media img{height:280px;}}
.scene:hover .scene-media img{transform:scale(1.03);}
.scene-media .chip{
  position:absolute;top:16px;left:16px;
  background:rgba(255,255,255,.94);color:var(--brand-deep);
  font-size:13px;font-weight:600;padding:6px 13px;border-radius:999px;
  box-shadow:var(--sh1);
}
.scene-body{padding:26px 24px 28px;}
.scene-body h3{margin-bottom:12px;}
.scene-body p{color:var(--ink-2);margin-bottom:18px;}
.scene-list{display:grid;gap:10px;margin-bottom:20px;}
.scene-list li{
  position:relative;padding-left:24px;font-size:15px;color:var(--ink-2);
}
.scene-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:50%;
  background:var(--brand-soft);box-shadow:inset 0 0 0 2px var(--brand);
}
.scene-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;color:var(--brand-deep);
}
.scene-link:hover{color:var(--accent);}
.scene-link svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .22s var(--ease);}
.scene-link:hover svg{transform:translateX(4px);}
@media (min-width:1024px){
  .scene-inner{grid-template-columns:1.45fr 1fr;align-items:stretch;}
  .scene-media img{height:100%;min-height:320px;}
  .scene-body{padding:38px 38px 40px;display:flex;flex-direction:column;justify-content:center;}
  .scene.reverse .scene-inner{grid-template-columns:1fr 1.45fr;}
  .scene.reverse .scene-media{order:2;}
  .scene.reverse .scene-body{order:1;}
}

/* ---------- 功能清单 ---------- */
.check-panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px 24px;box-shadow:var(--sh1);
}
@media (min-width:1024px){.check-panel{padding:40px;}}
.check-grid{display:grid;grid-template-columns:1fr;gap:14px;}
@media (min-width:700px){.check-grid{grid-template-columns:1fr 1fr;gap:16px 28px;}}
.check-item{
  display:flex;gap:14px;padding:16px 18px;border-radius:var(--r-sm);
  background:var(--bg);border:1px solid var(--line);
  transition:background .22s var(--ease),border-color .22s var(--ease);
}
.check-item:hover{background:var(--brand-soft);border-color:rgba(14,143,126,.32);}
.check-icon{
  flex:0 0 40px;width:40px;height:40px;border-radius:12px;
  background:var(--grad-brand);display:flex;align-items:center;justify-content:center;
}
.check-icon svg{width:20px;height:20px;fill:none;stroke:#fff;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;}
.check-item b{display:block;font-size:16px;font-weight:600;margin-bottom:4px;}
.check-item span{font-size:14px;color:var(--ink-2);line-height:1.7;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-wrap .accordion{
  background:transparent;border:0;margin:0;
}
.faq-wrap .accordion-item{
  background:var(--surface);border:1px solid var(--line);border-radius:18px;
  margin-bottom:12px;overflow:hidden;box-shadow:var(--sh1);
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.faq-wrap .accordion-item.is-active{
  background:var(--brand-soft);border-color:rgba(14,143,126,.32);
}
.faq-wrap .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:17px;font-weight:600;color:var(--ink);
  border:0;background:transparent;
}
.faq-wrap .accordion-title:hover{color:var(--brand-deep);background:transparent;}
.faq-wrap .accordion-title::before{
  content:"";order:2;flex:0 0 12px;width:12px;height:12px;
  border-right:2px solid var(--brand);border-bottom:2px solid var(--brand);
  transform:rotate(45deg);transition:transform .2s var(--ease);margin-right:4px;
}
.faq-wrap .accordion-item.is-active .accordion-title::before{transform:rotate(-135deg);}
.faq-wrap .accordion-content{
  padding:0 22px 20px;border:0;background:transparent;
  color:var(--ink-2);line-height:1.8;font-size:15.5px;
}
.faq-wrap .accordion-content p{margin-bottom:10px;}
.faq-wrap .accordion-content p:last-child{margin-bottom:0;}

/* ---------- CTA / 表单 ---------- */
.cta-section{padding:56px 0;}
@media (min-width:1024px){.cta-section{padding:96px 0;}}
.cta-card{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:linear-gradient(120deg,#0C2B27 0%,#0A5F55 62%,#0E8F7E 100%);
  color:#fff;padding:32px 24px;box-shadow:var(--sh2);
}
@media (min-width:1024px){.cta-card{padding:52px 48px;}}
.cta-card::after{
  content:"";position:absolute;left:-90px;bottom:-140px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(53,195,154,.34),transparent 70%);
}
.cta-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1fr;gap:32px;
}
@media (min-width:1024px){.cta-grid{grid-template-columns:1fr 1fr;gap:56px;align-items:center;}}
.cta-card h2{color:#fff;margin-bottom:14px;}
.cta-card p{color:rgba(255,255,255,.86);margin-bottom:20px;}
.trust-list{display:grid;gap:10px;}
.trust-list li{display:flex;align-items:center;gap:10px;font-size:14px;color:rgba(255,255,255,.88);}
.trust-list li::before{
  content:"";flex:0 0 18px;width:18px;height:18px;border-radius:50%;
  background:rgba(53,195,154,.24);
  box-shadow:inset 0 0 0 2px rgba(53,195,154,.9);
}
.form-card{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
  border-radius:var(--r-md);padding:22px;
  backdrop-filter:blur(6px);
}
@media (min-width:1024px){.form-card{padding:28px;}}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;font-weight:600;color:rgba(255,255,255,.86);margin-bottom:8px;}
.field input,.field select{
  width:100%;height:52px;padding:0 16px;border-radius:14px;
  background:rgba(255,255,255,.92);border:1px solid transparent;color:var(--ink);
  transition:box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.field input::placeholder{color:var(--ink-3);}
.field input:focus,.field select:focus{
  border-color:var(--brand);box-shadow:0 0 0 4px rgba(14,143,126,.28);outline:none;
}
.form-note{font-size:12.5px;color:rgba(255,255,255,.72);margin-top:12px;line-height:1.7;}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;background:var(--dark);color:rgba(255,255,255,.78);
  padding:48px 0 24px;margin-top:8px;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad-brand);
}
.footer-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px 20px;}
@media (min-width:900px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;}}
.footer-brand{font-size:18px;font-weight:800;color:#fff;margin-bottom:12px;}
.footer-brand span{color:#5ED9B4;margin-left:2px;}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.7);max-width:34em;}
.footer-col h4{
  font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;letter-spacing:.04em;
}
.footer-col ul li{margin-bottom:9px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.74);}
.footer-col a:hover{color:#5ED9B4;}
.footer-contact{font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.72);}
.footer-contact b{display:block;color:#fff;font-weight:600;margin-bottom:4px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between;
  margin-top:32px;padding-top:18px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.58);
}

/* ---------- 移动底部 Tab ---------- */
.mobile-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:80;
  display:flex;align-items:stretch;
  height:56px;padding-bottom:env(safe-area-inset-bottom);
  background:rgba(255,255,255,.97);
  border-top:1px solid var(--line);
  box-shadow:0 -6px 20px rgba(12,43,39,.06);
}
.mobile-tab a{
  flex:1 1 0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
  font-size:11px;color:var(--ink-3);position:relative;
}
.mobile-tab a svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.mobile-tab a.active{color:var(--brand);font-weight:600;}
.mobile-tab a.active::before{
  content:"";position:absolute;top:0;width:22px;height:3px;border-radius:0 0 3px 3px;background:var(--brand);
}
@media (min-width:1024px){.mobile-tab{display:none;}}

/* ---------- 移动端导航抽屉 ---------- */
@media (max-width:1023px){
  .nav-toggle{display:flex;}
  .nav-cta{display:none;}
  .nav-main{
    position:fixed;left:16px;right:16px;top:80px;z-index:70;
    display:grid;gap:4px;margin:0;padding:14px;
    background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
    box-shadow:var(--sh2);
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s var(--ease);
  }
  .nav-main.is-open{opacity:1;visibility:visible;transform:translateY(0);}
  .nav-link{padding:12px 14px;font-size:16px;border-radius:12px;}
  .nav-link.active{background:var(--brand-soft);}
  .nav-link.active::after{display:none;}
  body{padding-bottom:calc(64px + env(safe-area-inset-bottom));}
}
@media (min-width:1024px){.nav-main.is-open{position:static;opacity:1;visibility:visible;transform:none;}}

/* roulang page: category3 */
:root{
  --brand:#0E8F7E;
  --brand-deep:#0A5F55;
  --brand-mid:#12A08B;
  --brand-soft:#E4F4F0;
  --accent:#F2743B;
  --accent-soft:#FDEDE4;
  --badge:#F5A524;
  --ink:#12211F;
  --ink-2:#4B5F5B;
  --ink-3:#8A9A96;
  --line:#E2E9E6;
  --bg:#F7F8F5;
  --surface:#FFFFFF;
  --dark:#0C2B27;
  --grad-brand:linear-gradient(120deg,#0A5F55 0%,#0E8F7E 48%,#35C39A 100%);
  --grad-accent:linear-gradient(120deg,#F2743B 0%,#F5A524 100%);
  --sh1:0 2px 8px rgba(12,43,39,.06);
  --sh2:0 12px 32px rgba(12,43,39,.10);
  --sh3:0 18px 44px rgba(12,43,39,.16);
  --r-lg:28px;
  --r-md:20px;
  --r-sm:16px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}

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

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

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  padding-bottom:0;
}

img{max-width:100%;height:auto;display:block;border-radius:inherit;}
a{color:var(--brand-deep);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--accent);text-decoration:none;}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
button{cursor:pointer;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(14,143,126,.22);outline-offset:2px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 22px;
}

.row{max-width:var(--container);margin-left:auto;margin-right:auto;}
.row .column{padding-left:14px;padding-right:14px;}

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

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:52px;
  padding:0 26px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:700;
  letter-spacing:.01em;
  text-decoration:none;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
  white-space:nowrap;
}
.btn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
.btn-accent{background:var(--grad-accent);color:#fff;box-shadow:0 10px 24px rgba(242,116,59,.28);}
.btn-accent:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 32px rgba(242,116,59,.34);filter:brightness(1.04);}
.btn-accent:active{transform:translateY(0);box-shadow:0 6px 16px rgba(242,116,59,.24);}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 10px 24px rgba(14,143,126,.24);}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 32px rgba(14,143,126,.3);}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 16px rgba(14,143,126,.22);}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.5);}
.btn-ghost:hover{background:rgba(255,255,255,.2);color:#fff;transform:translateY(-2px);}
.btn-outline{background:#fff;color:var(--brand-deep);border-color:var(--line);box-shadow:var(--sh1);}
.btn-outline:hover{color:var(--brand-deep);border-color:var(--brand);transform:translateY(-2px);box-shadow:var(--sh2);}
.btn-sm{height:44px;padding:0 20px;font-size:14px;}
.btn-block{width:100%;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(255,255,255,.95);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh1);}
.nav-wrap{display:flex;align-items:center;gap:22px;min-height:72px;}
.brand{
  display:flex;
  align-items:center;
  font-size:19px;
  font-weight:800;
  letter-spacing:-.02em;
  color:var(--ink);
  white-space:nowrap;
}
.brand:hover{color:var(--ink);}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:30px;
  padding:0 10px;
  margin-right:8px;
  border-radius:10px;
  background:var(--grad-brand);
  color:#fff;
  font-size:14px;
  font-weight:800;
  letter-spacing:.02em;
}
.brand-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);margin-left:7px;}
.nav-main{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;
  padding:10px 14px;
  border-radius:10px;
  font-size:15px;
  font-weight:500;
  color:var(--ink-2);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:var(--brand-deep);background:var(--brand-soft);}
.nav-link.active{color:var(--brand-deep);font-weight:700;}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:2px;
  width:20px;
  height:3px;
  border-radius:3px;
  background:var(--grad-brand);
  transform:translateX(-50%);
}
.nav-cta{height:44px;padding:0 22px;font-size:14px;}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border:1px solid var(--line);
  border-radius:12px;
  background:#fff;
  align-items:center;
  justify-content:center;
  margin-left:auto;
}
.nav-toggle svg{width:22px;height:22px;stroke:var(--ink);stroke-width:2;fill:none;}

/* ============ Hero ============ */
.page-hero{
  position:relative;
  overflow:hidden;
  background:var(--dark);
  padding:78px 0 84px;
}
.hero-bg{
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-3.webp");
  background-size:cover;
  background-position:center;
}
.hero-veil{
  position:absolute;
  inset:0;
  background:linear-gradient(120deg,rgba(10,95,85,.93) 0%,rgba(14,143,126,.85) 52%,rgba(53,195,154,.76) 100%);
}
.page-hero .container{position:relative;z-index:2;}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:32px;
  padding:0 15px;
  border-radius:999px;
  background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.3);
  color:#fff;
  font-size:13px;
  font-weight:700;
  letter-spacing:.05em;
}
.hero-tag i{color:var(--badge);}
.page-hero h1{
  margin:20px 0 16px;
  font-size:clamp(30px,5vw,46px);
  line-height:1.16;
  font-weight:800;
  letter-spacing:-.02em;
  color:#fff;
  max-width:16em;
}
.hero-sub{
  max-width:620px;
  font-size:clamp(15px,1.4vw,18px);
  line-height:1.85;
  color:rgba(255,255,255,.88);
  margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.hero-note{
  display:flex;
  flex-wrap:wrap;
  gap:22px;
  margin-top:34px;
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,.22);
}
.hero-note li{display:flex;align-items:center;gap:9px;font-size:14px;color:rgba(255,255,255,.85);}
.hero-note svg{width:18px;height:18px;stroke:var(--badge);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:none;}

.hero-card{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:0 24px 56px rgba(4,32,28,.36);
  border:1px solid rgba(255,255,255,.24);
  background:#fff;
  margin-top:34px;
}
.hero-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.hero-card figcaption{
  padding:16px 22px 18px;
  background:#fff;
  font-size:14px;
  color:var(--ink-2);
}
.hero-card figcaption b{display:block;color:var(--ink);font-size:15px;margin-bottom:3px;}

/* ============ 通用板块 ============ */
.section{padding:96px 0;}
.section-tint{background:var(--surface);}
.section-dark{
  position:relative;
  background:linear-gradient(135deg,#0C2B27 0%,#0A5F55 100%);
  color:#fff;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:30px;
  padding:0 14px;
  border-radius:999px;
  background:var(--brand-soft);
  color:var(--brand-deep);
  font-size:13px;
  font-weight:700;
  letter-spacing:.06em;
}
.eyebrow-light{background:rgba(255,255,255,.14);color:#fff;}
.sec-title{
  margin:16px 0 14px;
  font-size:clamp(23px,3.2vw,34px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--ink);
}
.section-dark .sec-title{color:#fff;}
.sec-desc{max-width:720px;font-size:16px;color:var(--ink-2);line-height:1.85;}
.section-dark .sec-desc{color:rgba(255,255,255,.82);}
.sec-head{margin-bottom:48px;}

/* ============ 准备清单 ============ */
.prep-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:30px 32px;
  box-shadow:var(--sh1);
}
.prep-card h3{font-size:20px;font-weight:700;margin-bottom:6px;}
.prep-card .prep-tip{font-size:14px;color:var(--ink-3);margin-bottom:20px;}
.prep-list li{
  display:flex;
  gap:14px;
  padding:16px 0;
  border-bottom:1px dashed var(--line);
}
.prep-list li:last-child{border-bottom:0;padding-bottom:0;}
.prep-list li:first-child{padding-top:0;}
.prep-ico{
  flex:none;
  width:40px;
  height:40px;
  border-radius:13px;
  background:var(--brand-soft);
  display:flex;
  align-items:center;
  justify-content:center;
}
.prep-ico svg{width:20px;height:20px;stroke:var(--brand-deep);fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;}
.prep-list b{display:block;font-size:16px;font-weight:700;margin-bottom:2px;}
.prep-list span{font-size:14px;color:var(--ink-2);line-height:1.75;}
.prep-figure{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh2);
  background:var(--brand-soft);
  height:100%;
}
.prep-figure img{width:100%;height:100%;min-height:280px;object-fit:cover;}
.prep-badge{
  position:absolute;
  left:20px;
  bottom:20px;
  background:rgba(255,255,255,.96);
  border-radius:14px;
  padding:12px 18px;
  box-shadow:var(--sh2);
}
.prep-badge b{display:block;font-size:24px;font-weight:800;color:var(--brand-deep);line-height:1.2;}
.prep-badge span{font-size:13px;color:var(--ink-3);}

/* ============ 时间线 ============ */
.timeline{position:relative;max-width:900px;margin:0 auto;}
.timeline::before{
  content:"";
  position:absolute;
  left:28px;
  top:16px;
  bottom:16px;
  width:2px;
  background:linear-gradient(180deg,var(--brand) 0%,rgba(14,143,126,.35) 70%,rgba(14,143,126,.08) 100%);
}
.tl-item{position:relative;padding-left:88px;margin-bottom:24px;}
.tl-item:last-child{margin-bottom:0;}
.tl-dot{
  position:absolute;
  left:0;
  top:0;
  width:56px;
  height:56px;
  border-radius:50%;
  background:var(--grad-brand);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:18px;
  font-weight:800;
  letter-spacing:.02em;
  box-shadow:0 10px 22px rgba(14,143,126,.26);
  font-variant-numeric:tabular-nums;
}
.tl-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:24px 28px;
  box-shadow:var(--sh1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.tl-card:hover{transform:translateY(-4px);box-shadow:var(--sh3);border-color:rgba(14,143,126,.36);}
.tl-card h3{font-size:19px;font-weight:700;margin-bottom:8px;}
.tl-card p{font-size:15px;color:var(--ink-2);line-height:1.85;max-width:760px;}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:28px;
  padding:0 12px;
  border-radius:999px;
  font-size:13px;
  font-weight:600;
  background:var(--brand-soft);
  color:var(--brand-deep);
}
.chip-warn{background:var(--accent-soft);color:#B64B1B;}
.chip-gold{background:#FEF4DF;color:#8A5A05;}
.chip i{font-size:11px;}

/* ============ 注意事项 ============ */
.note-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-left:4px solid var(--brand);
  border-radius:var(--r-sm);
  padding:22px 24px;
  box-shadow:var(--sh1);
  height:100%;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.note-card:hover{transform:translateY(-4px);box-shadow:var(--sh3);}
.note-card.warn{border-left-color:var(--accent);}
.note-card.gold{border-left-color:var(--badge);}
.note-card h3{font-size:17px;font-weight:700;display:flex;align-items:center;gap:9px;margin-bottom:10px;}
.note-card h3 svg{width:19px;height:19px;stroke:var(--brand-deep);fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;}
.note-card.warn h3 svg{stroke:var(--accent);}
.note-card.gold h3 svg{stroke:#C98A10;}
.note-card p{font-size:14px;color:var(--ink-2);line-height:1.82;}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-wrap ul.accordion{
  background:transparent;
  border:0;
  margin:0;
}
.faq-wrap ul.accordion .accordion-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:18px;
  margin-bottom:12px;
  overflow:hidden;
  box-shadow:var(--sh1);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-wrap ul.accordion .accordion-item.is-active{
  border-color:rgba(14,143,126,.34);
  box-shadow:var(--sh2);
}
.faq-wrap ul.accordion .accordion-title{
  position:relative;
  display:block;
  padding:20px 62px 20px 24px;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  line-height:1.6;
  border:0;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.faq-wrap ul.accordion .accordion-title:hover{background:var(--brand-soft);color:var(--brand-deep);}
.faq-wrap ul.accordion .accordion-item.is-active .accordion-title{background:var(--brand-soft);color:var(--brand-deep);}
.faq-wrap ul.accordion .accordion-title::before{
  content:"";
  position:absolute;
  right:26px;
  top:50%;
  width:10px;
  height:10px;
  border-right:2px solid var(--brand);
  border-bottom:2px solid var(--brand);
  transform:translateY(-70%) rotate(45deg);
  transition:transform .2s var(--ease);
}
.faq-wrap ul.accordion .accordion-item.is-active .accordion-title::before{
  transform:translateY(-30%) rotate(-135deg);
}
.faq-wrap ul.accordion .accordion-content{
  padding:0 24px 22px;
  border:0;
  background:transparent;
  color:var(--ink-2);
  font-size:15px;
  line-height:1.88;
}
.faq-wrap ul.accordion .accordion-content p{margin-bottom:10px;}
.faq-wrap ul.accordion .accordion-content p:last-child{margin-bottom:0;}

/* ============ CTA 表单 ============ */
.cta-card{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-lg);
  background:linear-gradient(135deg,#0C2B27 0%,#0A5F55 62%,#0E8F7E 100%);
  padding:52px;
  color:#fff;
  box-shadow:0 24px 60px rgba(12,43,39,.28);
}
.cta-card::after{
  content:"";
  position:absolute;
  right:-120px;
  top:-120px;
  width:340px;
  height:340px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(53,195,154,.34),transparent 68%);
}
.cta-card > *{position:relative;z-index:2;}
.cta-card h2{font-size:clamp(23px,3vw,32px);font-weight:700;line-height:1.25;margin:14px 0 12px;color:#fff;}
.cta-card > p{color:rgba(255,255,255,.84);font-size:16px;line-height:1.85;max-width:560px;}
.cta-form{margin-top:30px;}
.form-field{margin-bottom:18px;}
.form-field label{display:block;font-size:13px;font-weight:600;color:rgba(255,255,255,.86);margin-bottom:8px;letter-spacing:.02em;}
.form-field input,
.form-field textarea{
  width:100%;
  height:52px;
  padding:0 18px;
  border-radius:14px;
  border:1px solid rgba(255,255,255,.34);
  background:rgba(255,255,255,.94);
  color:var(--ink);
  font-size:15px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.form-field textarea{height:112px;padding:14px 18px;resize:vertical;line-height:1.7;}
.form-field input::placeholder,
.form-field textarea::placeholder{color:var(--ink-3);}
.form-field input:focus,
.form-field textarea:focus{
  outline:none;
  border-color:var(--brand-mid);
  box-shadow:0 0 0 3px rgba(18,160,139,.28);
}
.trust-list{display:flex;flex-wrap:wrap;gap:18px;margin-top:24px;}
.trust-list li{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.82);}
.trust-list svg{width:17px;height:17px;stroke:var(--badge);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:none;}
.form-foot{font-size:13px;color:rgba(255,255,255,.66);margin-top:18px;line-height:1.7;}
.cta-side{
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.2);
  border-radius:var(--r-md);
  padding:26px;
  margin-top:30px;
}
.cta-side h3{font-size:17px;font-weight:700;color:#fff;margin-bottom:14px;}
.cta-side li{display:flex;gap:10px;font-size:14px;color:rgba(255,255,255,.82);padding:9px 0;line-height:1.75;}
.cta-side li i{color:var(--badge);margin-top:5px;flex:none;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  background:var(--dark);
  color:rgba(255,255,255,.78);
  padding:64px 0 26px;
  margin-top:0;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:4px;
  background:var(--grad-brand);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:38px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.14);
}
.footer-brand{
  font-size:19px;
  font-weight:800;
  color:#fff;
  letter-spacing:-.01em;
  margin-bottom:14px;
}
.footer-brand span{color:var(--brand-mid);margin-left:4px;}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);max-width:340px;}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{font-size:14px;color:rgba(255,255,255,.7);}
.footer-col ul a:hover{color:var(--brand-mid);}
.footer-contact{font-size:14px;line-height:1.9;color:rgba(255,255,255,.66);}
.footer-contact b{display:block;color:#fff;font-weight:600;margin-bottom:8px;}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:12px;
  padding-top:22px;
  font-size:13px;
  color:rgba(255,255,255,.5);
}

/* ============ 移动底部 Tab ============ */
.mobile-tab{
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  z-index:70;
  display:none;
  background:rgba(255,255,255,.97);
  border-top:1px solid var(--line);
  backdrop-filter:blur(12px);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tab ul{display:flex;margin:0;padding:0;}
.mobile-tab li{flex:1;}
.mobile-tab a{
  position:relative;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:3px;
  height:56px;
  font-size:11px;
  color:var(--ink-3);
}
.mobile-tab a svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.mobile-tab a.active{color:var(--brand);font-weight:600;}
.mobile-tab a.active::before{
  content:"";
  position:absolute;
  top:0;
  left:50%;
  transform:translateX(-50%);
  width:24px;
  height:3px;
  border-radius:0 0 3px 3px;
  background:var(--grad-brand);
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .section{padding:72px 0;}
  .nav-main{
    position:fixed;
    left:0;
    right:0;
    top:72px;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    margin-left:0;
    padding:14px 18px 22px;
    background:#fff;
    border-bottom:1px solid var(--line);
    box-shadow:var(--sh2);
    max-height:calc(100vh - 72px);
    overflow:auto;
    opacity:0;
    visibility:hidden;
    transform:translateY(-12px);
    transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
  }
  .site-header.nav-open .nav-main{opacity:1;visibility:visible;transform:none;}
  .nav-link{padding:14px 14px;font-size:16px;border-radius:12px;border-bottom:1px solid var(--line);}
  .nav-link:last-child{border-bottom:0;}
  .nav-link.active{background:var(--brand-soft);}
  .nav-link.active::after{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .mobile-tab{display:block;}
  body{padding-bottom:calc(56px + env(safe-area-inset-bottom));}
  .cta-card{padding:38px 28px;}
  .timeline::before{left:22px;}
  .tl-item{padding-left:70px;}
  .tl-dot{width:44px;height:44px;font-size:16px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .footer-desc{max-width:none;}
}

@media (max-width:640px){
  body{font-size:16px;}
  .container{padding:0 18px;}
  .section{padding:58px 0;}
  .page-hero{padding:54px 0 60px;}
  .page-hero h1{font-size:clamp(27px,7.4vw,34px);}
  .hero-actions .btn{width:100%;}
  .hero-note{gap:12px;flex-direction:column;align-items:flex-start;}
  .prep-card{padding:24px 20px;}
  .prep-figure img{min-height:210px;}
  .timeline::before{left:18px;}
  .tl-item{padding-left:58px;margin-bottom:18px;}
  .tl-dot{width:38px;height:38px;font-size:14px;}
  .tl-card{padding:20px 18px;}
  .tl-card h3{font-size:17px;}
  .cta-card{padding:30px 20px;border-radius:22px;}
  .cta-side{padding:20px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;gap:6px;font-size:12px;}
  .faq-wrap ul.accordion .accordion-title{padding:17px 52px 17px 18px;font-size:16px;}
  .faq-wrap ul.accordion .accordion-content{padding:0 18px 18px;}
  .brand{font-size:17px;}
  .brand-mark{height:26px;padding:0 8px;font-size:13px;}
}

/* roulang page: category4 */
:root{
  --brand:#0E8F7E;
  --brand-deep:#0A5F55;
  --brand-mid:#12A08B;
  --brand-soft:#E4F4F0;
  --accent:#F2743B;
  --accent-soft:#FDEDE4;
  --badge:#F5A524;
  --ink:#12211F;
  --ink-2:#4B5F5B;
  --ink-3:#8A9A96;
  --line:#E2E9E6;
  --bg:#F7F8F5;
  --surface:#FFFFFF;
  --dark:#0C2B27;
  --grad-brand:linear-gradient(120deg,#0A5F55 0%,#0E8F7E 48%,#35C39A 100%);
  --grad-accent:linear-gradient(120deg,#F2743B 0%,#F5A524 100%);
  --sh1:0 2px 8px rgba(12,43,39,.06);
  --sh2:0 12px 32px rgba(12,43,39,.10);
  --sh3:0 18px 44px rgba(12,43,39,.16);
  --r-lg:28px;
  --r-md:20px;
  --r-sm:14px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  padding-bottom:calc(64px + env(safe-area-inset-bottom));
}
img{max-width:100%;display:block;}
a{color:var(--brand-deep);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--accent);text-decoration:none;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:none;
  box-shadow:0 0 0 3px rgba(14,143,126,.22);
  border-radius:6px;
}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;cursor:pointer;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
.narrow{max-width:860px;margin-left:auto;margin-right:auto;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh1);}
.nav-wrap{display:flex;align-items:center;gap:28px;height:72px;}
.brand{
  display:inline-flex;align-items:center;gap:2px;
  font-size:19px;font-weight:800;color:var(--ink);
  letter-spacing:-.01em;white-space:nowrap;
}
.brand:hover{color:var(--ink);}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  height:30px;padding:0 9px;margin-right:6px;
  border-radius:9px;background:var(--grad-brand);
  color:#fff;font-size:14px;font-weight:800;letter-spacing:.04em;
}
.brand-dot{
  width:7px;height:7px;border-radius:50%;background:var(--accent);
  margin-left:6px;display:inline-block;
}
.nav-main{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;padding:9px 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--ink-2);
}
.nav-link:hover{color:var(--brand-deep);background:var(--brand-soft);}
.nav-link.active{color:var(--brand-deep);font-weight:700;}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;
  height:3px;border-radius:3px;background:var(--grad-brand);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:none;border-radius:999px;font-weight:700;font-size:15px;
  padding:12px 26px;line-height:1.2;cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),filter .22s var(--ease),background .22s var(--ease),color .22s var(--ease);
}
.btn-accent{background:var(--grad-accent);color:#fff;box-shadow:0 8px 20px rgba(242,116,59,.28);}
.btn-accent:hover{color:#fff;filter:brightness(1.05);transform:translateY(-2px);box-shadow:0 12px 28px rgba(242,116,59,.34);}
.btn-accent:active{transform:translateY(0);box-shadow:0 6px 14px rgba(242,116,59,.24);}
.btn-brand{background:var(--grad-brand);color:#fff;box-shadow:0 8px 20px rgba(14,143,126,.26);}
.btn-brand:hover{color:#fff;filter:brightness(1.05);transform:translateY(-2px);box-shadow:var(--sh3);}
.btn-brand:active{transform:translateY(0);box-shadow:0 6px 14px rgba(14,143,126,.22);}
.btn-ghost{background:transparent;color:var(--brand-deep);border:1.5px solid rgba(14,143,126,.35);}
.btn-ghost:hover{color:var(--brand-deep);background:var(--brand-soft);border-color:var(--brand);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-link{
  background:none;border:none;padding:0;color:var(--brand-deep);
  font-size:15px;font-weight:600;display:inline-flex;align-items:center;gap:6px;
}
.btn-link:hover{color:var(--accent);}
.btn-link svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2;transition:transform .22s var(--ease);}
.btn-link:hover svg{transform:translateX(4px);}
.nav-cta{padding:11px 24px;font-size:14.5px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:#fff;align-items:center;justify-content:center;
}
.nav-toggle svg{width:22px;height:22px;stroke:var(--ink);fill:none;stroke-width:1.8;}

/* ---------- hero ---------- */
.cat-hero{
  position:relative;overflow:hidden;
  background-image:linear-gradient(120deg,rgba(10,95,85,.90) 0%,rgba(14,143,126,.86) 50%,rgba(53,195,154,.80) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  color:#fff;
  padding:76px 0 84px;
}
.cat-hero::after{
  content:"";position:absolute;right:-120px;bottom:-160px;
  width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.16),rgba(255,255,255,0) 70%);
}
.cat-hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center;}
.crumb{font-size:13px;color:rgba(255,255,255,.78);margin-bottom:18px;}
.crumb a{color:rgba(255,255,255,.9);}
.crumb a:hover{color:#fff;}
.crumb span{margin:0 7px;color:rgba(255,255,255,.6);}
.cat-hero h1{
  font-size:clamp(30px,5vw,50px);line-height:1.15;font-weight:800;letter-spacing:-.02em;
  margin-bottom:16px;
}
.cat-hero .hero-sub{
  font-size:clamp(17px,1.6vw,21px);line-height:1.65;color:rgba(255,255,255,.9);
  max-width:600px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-actions .btn{min-width:150px;}
.hero-mini{display:flex;gap:22px;flex-wrap:wrap;margin-top:30px;}
.hero-mini li{font-size:14px;color:rgba(255,255,255,.86);display:flex;align-items:center;gap:8px;}
.hero-mini svg{width:17px;height:17px;stroke:#8FE6CE;fill:none;stroke-width:2.2;}
.hero-card{
  background:rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.28);
  border-radius:var(--r-lg);
  padding:26px;
  backdrop-filter:blur(6px);
  box-shadow:var(--sh2);
}
.hero-card h3{font-size:18px;font-weight:700;margin-bottom:6px;}
.hero-card p{font-size:14px;color:rgba(255,255,255,.82);margin-bottom:18px;}
.hero-card img{border-radius:18px;width:100%;height:190px;object-fit:cover;}
.hero-stat-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:18px;}
.hero-stat{
  background:rgba(255,255,255,.94);border-radius:14px;padding:12px 14px;
}
.hero-stat b{display:block;font-size:22px;font-weight:800;color:var(--brand-deep);font-variant-numeric:tabular-nums;line-height:1.25;}
.hero-stat span{font-size:12.5px;color:var(--ink-3);}

/* ---------- anchor tabs ---------- */
.anchor-bar{
  background:#fff;border-bottom:1px solid var(--line);
  position:sticky;top:72px;z-index:40;
}
.anchor-inner{display:flex;gap:10px;overflow-x:auto;padding:14px 0;scrollbar-width:none;}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-tab{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:8px;
  padding:9px 18px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-deep);
  font-size:14px;font-weight:600;white-space:nowrap;
  border:1px solid transparent;transition:all .22s var(--ease);
}
.anchor-tab:hover{background:var(--brand);color:#fff;}
.anchor-tab em{
  font-style:normal;font-size:12px;background:#fff;color:var(--brand-deep);
  border-radius:999px;padding:1px 7px;font-variant-numeric:tabular-nums;
}

/* ---------- section base ---------- */
.section{padding:88px 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;color:var(--brand-deep);
  background:var(--brand-soft);border-radius:999px;padding:6px 14px;margin-bottom:16px;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block;}
h2.sec-title{font-size:clamp(23px,3.2vw,34px);line-height:1.2;font-weight:700;letter-spacing:-.01em;}
.sec-desc{margin-top:14px;color:var(--ink-2);font-size:16px;line-height:1.85;}

/* ---------- faq groups ---------- */
.faq-group{margin-bottom:52px;}
.faq-group:last-child{margin-bottom:0;}
.group-head{display:flex;align-items:center;gap:14px;margin-bottom:20px;}
.group-num{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  background:var(--grad-brand);color:#fff;font-weight:800;font-size:15px;
  display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;box-shadow:0 6px 16px rgba(14,143,126,.24);
}
.group-head h2{font-size:22px;font-weight:700;}
.group-head p{font-size:13.5px;color:var(--ink-3);margin-top:2px;}
.faq-list{max-width:860px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:18px;
  margin-bottom:12px;box-shadow:var(--sh1);overflow:hidden;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.faq-item:hover{border-color:rgba(14,143,126,.32);}
.faq-item.is-open{background:var(--brand-soft);border-color:rgba(14,143,126,.32);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:none;border:none;text-align:left;
  padding:19px 22px;font-size:17px;font-weight:600;color:var(--ink);line-height:1.55;
}
.faq-q:hover{color:var(--brand-deep);}
.faq-q .chev{
  width:26px;height:26px;flex:0 0 26px;border-radius:50%;
  background:#fff;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
}
.faq-q .chev svg{width:14px;height:14px;stroke:var(--brand-deep);fill:none;stroke-width:2.4;transition:transform .2s var(--ease);}
.faq-item.is-open .chev svg{transform:rotate(180deg);}
.faq-a{display:none;padding:0 22px 20px;font-size:15.5px;line-height:1.85;color:var(--ink-2);}
.faq-item.is-open .faq-a{display:block;}
.faq-a ul{margin:10px 0 0;padding-left:0;}
.faq-a li{position:relative;padding-left:18px;margin-bottom:6px;}
.faq-a li::before{
  content:"";position:absolute;left:2px;top:11px;width:6px;height:6px;
  border-radius:50%;background:var(--brand);
}

/* ---------- support desk ---------- */
.support-wrap{
  display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:stretch;
}
.support-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh1);transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.support-card:hover{transform:translateY(-4px);box-shadow:var(--sh3);}
.support-card .sc-icon{
  width:48px;height:48px;border-radius:14px;background:var(--brand-soft);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.support-card .sc-icon svg{width:24px;height:24px;stroke:var(--brand-deep);fill:none;stroke-width:1.8;}
.support-card h3{font-size:19px;font-weight:700;margin-bottom:10px;}
.support-card p{font-size:15px;color:var(--ink-2);line-height:1.8;}
.support-card .sc-list{margin-top:16px;}
.support-card .sc-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14.5px;color:var(--ink-2);padding:7px 0;
}
.support-card .sc-list svg{width:16px;height:16px;flex:0 0 16px;margin-top:5px;stroke:var(--brand-mid);fill:none;stroke-width:2.4;}

/* ---------- form ---------- */
.cta-panel{
  background:linear-gradient(140deg,var(--dark) 0%,var(--brand-deep) 100%);
  border-radius:var(--r-lg);padding:44px;color:#fff;
  display:grid;grid-template-columns:1fr 1.05fr;gap:44px;align-items:center;
  box-shadow:var(--sh2);position:relative;overflow:hidden;
}
.cta-panel::before{
  content:"";position:absolute;left:-80px;top:-90px;width:300px;height:300px;border-radius:50%;
  background:radial-gradient(circle,rgba(53,195,154,.28),rgba(53,195,154,0) 70%);
}
.cta-copy{position:relative;z-index:2;}
.cta-copy h2{font-size:clamp(22px,3vw,30px);font-weight:700;line-height:1.3;margin-bottom:14px;}
.cta-copy p{font-size:15.5px;color:rgba(255,255,255,.82);line-height:1.85;}
.trust-list{margin-top:24px;}
.trust-list li{display:flex;align-items:center;gap:10px;font-size:14px;color:rgba(255,255,255,.88);padding:6px 0;}
.trust-list svg{width:17px;height:17px;stroke:#8FE6CE;fill:none;stroke-width:2.4;flex:0 0 17px;}
.form-card{
  position:relative;z-index:2;background:rgba(255,255,255,.09);
  border:1px solid rgba(255,255,255,.2);border-radius:24px;padding:26px;
}
.form-row{margin-bottom:16px;}
.form-row label{display:block;font-size:13px;font-weight:600;color:rgba(255,255,255,.85);margin-bottom:7px;}
.form-row input,.form-row select,.form-row textarea{
  width:100%;height:52px;border-radius:var(--r-sm);border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.92);padding:0 15px;font-size:15px;color:var(--ink);
  transition:box-shadow .2s var(--ease),border-color .2s var(--ease);
  font-family:inherit;
}
.form-row textarea{height:92px;padding:13px 15px;resize:vertical;line-height:1.7;}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{
  border-color:var(--brand-mid);box-shadow:0 0 0 3px rgba(18,160,139,.28);outline:none;
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.form-note{font-size:12.5px;color:rgba(255,255,255,.6);margin-top:12px;line-height:1.7;}
.form-card .btn{width:100%;margin-top:6px;padding:14px 26px;}

/* ---------- steps strip ---------- */
.tip-strip{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:36px;
}
.tip-card{
  background:#fff;border:1px dashed rgba(14,143,126,.35);border-radius:var(--r-md);
  padding:22px;
}
.tip-card b{display:block;font-size:15.5px;font-weight:700;color:var(--brand-deep);margin-bottom:8px;}
.tip-card span{font-size:14px;color:var(--ink-2);line-height:1.8;}

/* ---------- footer ---------- */
.site-footer{
  background:var(--dark);color:rgba(255,255,255,.78);
  border-top:3px solid transparent;
  background-image:linear-gradient(var(--dark),var(--dark)),var(--grad-brand);
  background-origin:border-box;background-clip:padding-box,border-box;
  padding:64px 0 26px;margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:38px;}
.footer-brand{font-size:20px;font-weight:800;color:#fff;margin-bottom:14px;}
.footer-brand span{color:#8FE6CE;margin-left:2px;}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{font-size:14px;color:rgba(255,255,255,.66);}
.footer-col ul a:hover{color:#8FE6CE;}
.footer-contact{font-size:14px;line-height:2;color:rgba(255,255,255,.62);}
.footer-contact b{display:block;color:#fff;font-size:15px;margin-bottom:6px;}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- mobile tab bar ---------- */
.mobile-tabs{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  height:calc(56px + env(safe-area-inset-bottom));
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(255,255,255,.97);backdrop-filter:blur(10px);
  border-top:1px solid var(--line);
}
.mobile-tabs ul{display:flex;height:56px;}
.mobile-tabs li{flex:1;}
.mobile-tabs a{
  position:relative;height:100%;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--ink-3);
}
.mobile-tabs a svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.8;}
.mobile-tabs a.active{color:var(--brand-deep);}
.mobile-tabs a.active::before{
  content:"";position:absolute;top:0;width:22px;height:3px;border-radius:0 0 3px 3px;background:var(--grad-brand);
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .nav-main,.nav-cta{display:none;}
  .nav-toggle{display:flex;margin-left:auto;}
  .cat-hero-grid{grid-template-columns:1fr;gap:34px;}
  .cat-hero{padding:60px 0 66px;}
  .anchor-bar{top:72px;}
  .support-wrap{grid-template-columns:1fr;}
  .cta-panel{grid-template-columns:1fr;gap:30px;padding:34px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .section{padding:72px 0;}
  .tip-strip{grid-template-columns:1fr;}
  .mobile-tabs{display:block;}
}
@media (max-width:640px){
  .container{padding:0 16px;}
  .nav-wrap{height:64px;gap:14px;}
  .brand{font-size:16.5px;}
  .brand-mark{height:27px;font-size:13px;padding:0 7px;}
  .anchor-bar{top:64px;}
  .cat-hero{padding:48px 0 56px;}
  .cat-hero h1{font-size:29px;}
  .hero-actions .btn{flex:1 1 100%;}
  .section{padding:56px 0;}
  .faq-q{font-size:16px;padding:17px 18px;}
  .faq-a{padding:0 18px 18px;font-size:15px;}
  .group-head h2{font-size:19px;}
  .support-card{padding:22px;}
  .cta-panel{padding:26px 20px;border-radius:22px;}
  .form-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;gap:6px;}
  .hero-stat-row{grid-template-columns:1fr 1fr;}
}