/* roulang page: index */
:root{
  --brand-deep:#0B4F4A;
  --brand:#0F8C7E;
  --brand-light:#E7F5F2;
  --brand-light-2:#F2FAF8;
  --accent:#FF7A45;
  --ink:#10211F;
  --ink-soft:#55706B;
  --line:#E1EDEA;
  --paper:#FFFFFF;
  --paper-warm:#F6FBF9;
  --radius-card:16px;
  --radius-btn:12px;
  --shadow-1:0 6px 20px rgba(11,79,74,.07);
  --shadow-2:0 14px 32px rgba(11,79,74,.14);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.65;
  color:var(--ink);
  background:var(--paper-warm);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
::selection{background:var(--brand-light);color:var(--brand-deep);}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 16px;}
@media (min-width:768px){.container{padding:0 24px;}}
@media (min-width:1024px){.container{padding:0 32px;}}

/* 顶部信息条 */
.topbar{background:var(--brand-deep);color:#CFEDE8;font-size:12.5px;letter-spacing:.2px;}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;min-height:36px;gap:16px;}
.topbar-left{display:flex;align-items:center;gap:12px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;opacity:.95;}
.topbar-sep{width:1px;height:12px;background:rgba(207,237,232,.35);flex:none;}
.topbar-right{display:flex;align-items:center;gap:14px;flex:none;}
.topbar-link{color:#CFEDE8;font-size:12.5px;transition:color .2s ease;}
.topbar-link:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.topbar-btn{display:inline-flex;align-items:center;height:24px;padding:0 12px;border:1px solid rgba(207,237,232,.5);border-radius:999px;font-size:12px;color:#fff;transition:background .2s ease,border-color .2s ease;}
.topbar-btn:hover{background:rgba(255,255,255,.14);border-color:#fff;}
@media (max-width:639px){.topbar-right .topbar-link{display:none;}}

/* 主导航 */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:68px;}
.logo{display:flex;align-items:center;gap:10px;flex:none;}
.logo-mark{width:40px;height:40px;border-radius:12px;background:var(--brand-light);display:grid;place-items:center;color:var(--brand);flex:none;transition:transform .25s ease;}
.logo:hover .logo-mark{transform:rotate(-6deg);}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-name{font-size:18px;font-weight:700;color:var(--brand-deep);letter-spacing:.3px;}
.logo-sub{font-size:11px;font-weight:500;color:var(--ink-soft);letter-spacing:1px;}
.nav-links{display:none;}
@media (min-width:1024px){
  .nav-links{display:flex;align-items:center;gap:30px;}
}
.nav-link{position:relative;display:inline-block;padding:10px 0;font-size:15px;font-weight:500;color:var(--ink);transition:color .2s ease;}
.nav-link:hover{color:var(--brand);}
.nav-link.active{color:var(--brand);font-weight:600;}
.nav-link.active::after{content:"";position:absolute;left:0;right:0;bottom:2px;height:2px;background:var(--accent);border-radius:2px;}
.nav-actions{display:flex;align-items:center;gap:10px;flex:none;}
.nav-toggle{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:12px;color:var(--brand-deep);cursor:pointer;transition:background .2s ease,border-color .2s ease;}
.nav-toggle:hover{background:var(--brand-light);border-color:var(--brand);}
@media (min-width:1024px){.nav-toggle{display:none;}}
.mobile-nav{display:none;background:#fff;border-top:1px solid var(--line);padding:8px 0 16px;}
.mobile-nav.open{display:block;}
.mobile-nav a{display:flex;align-items:center;height:44px;padding:0 4px;font-size:15px;color:var(--ink);border-bottom:1px solid var(--line);transition:color .2s ease;}
.mobile-nav a:last-child{border-bottom:0;}
.mobile-nav a:hover,.mobile-nav a.active{color:var(--brand);font-weight:600;}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:background .2s ease,color .2s ease,border-color .2s ease,transform .15s ease,box-shadow .2s ease;white-space:nowrap;}
.btn:active{transform:scale(.98);}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 6px 18px rgba(255,122,69,.28);}
.btn-accent:hover{background:#e8642f;box-shadow:0 10px 24px rgba(255,122,69,.34);}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-deep);}
.btn-outline{background:#fff;color:var(--brand-deep);border-color:var(--line);}
.btn-outline:hover{background:var(--brand-light);border-color:var(--brand);color:var(--brand-deep);}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.45);}
.btn-ghost:hover{background:rgba(255,255,255,.14);border-color:#fff;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;}

/* Hero */
.hero{position:relative;overflow:hidden;padding:52px 0 56px;background:linear-gradient(155deg,var(--paper-warm) 0%,#FFFFFF 55%,var(--brand-light-2) 100%);}
@media (min-width:768px){.hero{padding:72px 0 80px;}}
@media (min-width:1024px){.hero{padding:88px 0 96px;}}
.hero-grid{position:relative;z-index:2;display:grid;gap:40px;align-items:center;}
@media (min-width:1024px){.hero-grid{grid-template-columns:7fr 5fr;gap:56px;}}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;background:var(--brand-light);color:var(--brand-deep);font-size:12px;font-weight:600;letter-spacing:.4px;}
.eyebrow-dot{width:6px;height:6px;border-radius:50%;background:var(--brand);}
h1.hero-title{margin-top:20px;font-size:clamp(30px,4.2vw,48px);line-height:1.2;font-weight:800;letter-spacing:-.6px;color:var(--ink);}
.hero-sub{margin-top:18px;font-size:16px;line-height:1.8;color:var(--ink-soft);max-width:34em;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-stats{display:flex;flex-wrap:wrap;margin-top:36px;}
.stat{padding:0 22px;border-left:1px solid var(--line);}
.stat:first-child{padding-left:0;border-left:0;}
.stat-num{font-size:24px;font-weight:700;color:var(--brand-deep);font-variant-numeric:tabular-nums;line-height:1.25;}
.stat-label{font-size:13px;color:var(--ink-soft);margin-top:2px;}
@media (max-width:519px){
  .hero-stats{gap:16px 0;}
  .stat{width:50%;padding:0 0 0 16px;}
  .stat:nth-child(odd){padding-left:0;border-left:0;}
}
.hero-visual{position:relative;}
.hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-card);box-shadow:var(--shadow-2);}
.hero-chip{position:absolute;left:16px;bottom:16px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 16px;box-shadow:var(--shadow-2);display:flex;align-items:center;gap:12px;}
.hero-chip-icon{width:34px;height:34px;border-radius:10px;background:var(--brand-light);display:grid;place-items:center;color:var(--brand);flex:none;}
.hero-chip-num{font-size:15px;font-weight:700;color:var(--brand-deep);font-variant-numeric:tabular-nums;line-height:1.2;}
.hero-chip-text{font-size:12px;color:var(--ink-soft);}
.scale-dots{position:absolute;right:-90px;bottom:-110px;width:400px;height:400px;border-radius:50%;background-image:radial-gradient(circle,rgba(11,79,74,.55) 1.6px,transparent 1.7px);background-size:16px 16px;opacity:.09;pointer-events:none;z-index:1;}
.bubble{position:absolute;border-radius:50%;background:var(--brand);opacity:.12;pointer-events:none;z-index:1;}
.bubble-1{width:12px;height:12px;top:16%;right:8%;}
.bubble-2{width:8px;height:8px;top:28%;right:16%;}
.bubble-3{width:14px;height:14px;top:62%;right:4%;}
.bubble-4{width:6px;height:6px;top:74%;right:18%;}
@media (max-width:1023px){.bubble{display:none;}.scale-dots{display:none;}}

/* 板块 */
.section{padding:56px 0;}
@media (min-width:768px){.section{padding:76px 0;}}
@media (min-width:1024px){.section{padding:96px 0;}}
.section-alt{background:var(--brand-light-2);}
.section-deep{background:var(--brand-deep);color:#fff;}
.section-head{max-width:720px;margin-bottom:36px;}
.section-head h2{font-size:clamp(24px,2.6vw,32px);font-weight:700;line-height:1.3;letter-spacing:-.4px;color:var(--ink);}
.section-head p{margin-top:12px;font-size:15.5px;line-height:1.8;color:var(--ink-soft);}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:36px;}
.section-head-row .section-head{margin-bottom:0;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);transition:color .2s ease,gap .2s ease;}
.text-link:hover{color:var(--accent);gap:10px;}

/* 功能卡 */
.feature-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;display:flex;flex-direction:column;min-height:100%;transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;}
.feature-card:hover{border-color:#C9E7E0;box-shadow:var(--shadow-2);transform:translateY(-2px);}
.feature-icon{width:40px;height:40px;border-radius:10px;background:var(--brand-light);display:grid;place-items:center;color:var(--brand);margin-bottom:16px;flex:none;}
.feature-card h3{font-size:18px;font-weight:600;line-height:1.4;margin-bottom:8px;color:var(--ink);}
.feature-card p{font-size:14px;line-height:1.75;color:var(--ink-soft);}
.feature-link{margin-top:auto;padding-top:18px;font-size:13px;font-weight:600;color:var(--brand);transition:color .2s ease;}
.feature-card:hover .feature-link{color:var(--accent);}
.feature-card.is-lead{background:linear-gradient(160deg,var(--brand-light) 0%,#FFFFFF 78%);border-color:#CFE9E3;}
.feature-card.is-lead h3{font-size:19px;}

/* 使用场景 */
.scene{display:grid;gap:28px;align-items:center;}
.scene + .scene{margin-top:56px;}
@media (min-width:768px){.scene + .scene{margin-top:72px;}}
@media (min-width:1024px){
  .scene{grid-template-columns:5fr 7fr;gap:60px;}
  .scene.reverse{grid-template-columns:7fr 5fr;}
  .scene.reverse .scene-media{order:2;}
}
.scene-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-card);box-shadow:var(--shadow-1);}
.scene-body h2{font-size:clamp(22px,2.4vw,28px);font-weight:700;line-height:1.35;letter-spacing:-.3px;margin-top:14px;}
.scene-num{display:inline-grid;place-items:center;width:46px;height:46px;border-radius:50%;border:1px solid #CDE8E2;background:var(--brand-light);color:var(--brand-deep);font-size:16px;font-weight:700;font-variant-numeric:tabular-nums;}
.scene-body p{margin-top:14px;font-size:15.5px;line-height:1.85;color:var(--ink-soft);}
.scene-list{margin-top:20px;display:grid;gap:10px;}
.scene-list li{position:relative;padding-left:16px;font-size:14.5px;line-height:1.75;color:var(--ink);}
.scene-list li::before{content:"";position:absolute;left:0;top:.55em;bottom:.15em;width:4px;border-radius:2px;background:var(--brand);}

/* 案例 */
.case-grid{display:grid;gap:24px;}
@media (min-width:1024px){.case-grid{grid-template-columns:5fr 7fr;gap:40px;align-items:start;}}
.case-metrics{display:grid;gap:24px;}
.metric{background:var(--brand-light);border-radius:var(--radius-card);padding:24px;}
.metric-num{font-size:40px;line-height:1.1;font-weight:800;color:var(--brand-deep);font-variant-numeric:tabular-nums;}
.metric-num span{font-size:16px;font-weight:600;margin-left:4px;}
.metric-label{margin-top:8px;font-size:14px;line-height:1.7;color:var(--ink-soft);}
.case-cards{display:grid;gap:20px;}
.case-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:24px 24px 24px 26px;box-shadow:var(--shadow-1);}
.case-card::before{content:"";position:absolute;left:0;top:20px;bottom:20px;width:3px;border-radius:0 3px 3px 0;background:var(--accent);}
.case-quote{font-size:15.5px;line-height:1.85;color:var(--ink);}
.case-meta{margin-top:16px;display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.case-tag{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;background:var(--brand-light);color:var(--brand-deep);font-size:12px;font-weight:600;}
.case-source{font-size:13px;color:var(--ink-soft);}

/* 价格 */
.price-grid{display:grid;gap:20px;}
@media (min-width:860px){.price-grid{grid-template-columns:1fr 1fr;}}
.price-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:28px;display:flex;flex-direction:column;transition:box-shadow .2s ease,transform .2s ease;}
.price-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}
.price-card.featured{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff;}
.price-flag{position:absolute;top:0;right:20px;transform:translateY(-50%);background:var(--accent);color:#fff;font-size:12px;font-weight:700;letter-spacing:.5px;padding:5px 12px;border-radius:999px;}
.price-name{font-size:16px;font-weight:600;letter-spacing:.2px;}
.price-card.featured .price-name{color:#CFEDE8;}
.price-amount{margin-top:14px;display:flex;align-items:baseline;gap:6px;}
.price-num{font-size:36px;font-weight:800;line-height:1;color:var(--brand-deep);font-variant-numeric:tabular-nums;letter-spacing:-1px;}
.price-card.featured .price-num{color:#fff;}
.price-unit{font-size:13px;color:var(--ink-soft);}
.price-card.featured .price-unit{color:#9FD9CE;}
.price-desc{margin-top:10px;font-size:14px;line-height:1.75;color:var(--ink-soft);}
.price-card.featured .price-desc{color:#CFEDE8;}
.price-list{margin-top:20px;padding-top:20px;border-top:1px solid var(--line);display:grid;gap:10px;}
.price-card.featured .price-list{border-top-color:rgba(255,255,255,.18);}
.price-list li{display:flex;align-items:flex-start;gap:8px;font-size:14px;line-height:1.7;color:var(--ink);}
.price-card.featured .price-list li{color:#E7F5F2;}
.check{width:16px;height:16px;border-radius:50%;background:var(--brand-light);color:var(--brand);display:grid;place-items:center;flex:none;margin-top:3px;}
.price-card.featured .check{background:rgba(255,255,255,.16);color:#fff;}
.price-card .btn{margin-top:24px;width:100%;}
.price-custom{margin-top:20px;background:var(--brand-light);border-radius:var(--radius-card);padding:26px 28px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;}
.price-custom h3{font-size:18px;font-weight:700;color:var(--brand-deep);}
.price-custom p{margin-top:6px;font-size:14px;line-height:1.75;color:var(--ink-soft);max-width:52em;}

/* 资讯卡 */
.news-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;height:100%;}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#C9E7E0;}
.news-thumb{position:relative;aspect-ratio:16/9;background:linear-gradient(135deg,#E7F5F2 0%,#D3EDE8 55%,#F2FAF8 100%);overflow:hidden;}
.news-thumb::after{content:"";position:absolute;inset:0;background-image:radial-gradient(circle,rgba(11,79,74,.5) 1.6px,transparent 1.7px);background-size:16px 16px;opacity:.16;}
.news-badge{position:absolute;left:12px;top:12px;z-index:2;display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;background:rgba(255,255,255,.92);color:var(--brand-deep);font-size:12px;font-weight:600;}
.news-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1;}
.news-title{font-size:17px;font-weight:600;line-height:1.5;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-excerpt{margin-top:10px;font-size:14px;line-height:1.75;color:var(--ink-soft);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--ink-soft);font-variant-numeric:tabular-nums;}
.news-more{color:var(--brand);font-weight:600;transition:color .2s ease;}
.news-card:hover .news-more{color:var(--accent);}
.news-empty{grid-column:1/-1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:14px;padding:48px 24px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);}
.news-empty-icon{width:64px;height:64px;border-radius:20px;background:var(--brand-light);display:grid;place-items:center;color:var(--brand);}
.news-empty p{font-size:15px;color:var(--ink-soft);}

/* FAQ */
.faq-list{display:grid;gap:10px;max-width:880px;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;}
.faq-item.open{border-color:#C9E7E0;box-shadow:var(--shadow-1);}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 20px;background:transparent;border:0;text-align:left;font-size:16px;font-weight:600;color:var(--ink);cursor:pointer;line-height:1.6;transition:color .2s ease;}
.faq-q:hover{color:var(--brand);}
.faq-sign{position:relative;width:18px;height:18px;flex:none;transition:transform .2s ease;color:var(--brand);}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;background:currentColor;border-radius:2px;}
.faq-sign::before{left:0;right:0;top:8px;height:2px;}
.faq-sign::after{top:0;bottom:0;left:8px;width:2px;}
.faq-item.open .faq-sign{transform:rotate(45deg);color:var(--accent);}
.faq-a{display:none;padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--ink-soft);}
.faq-item.open .faq-a{display:block;}

/* CTA */
.cta-band{padding:0 0 56px;}
@media (min-width:768px){.cta-band{padding:0 0 80px;}}
@media (min-width:1024px){.cta-band{padding:0 0 96px;}}
.cta-inner{position:relative;overflow:hidden;background:var(--brand-deep);border-radius:20px;padding:44px 28px;color:#fff;text-align:center;}
@media (min-width:768px){.cta-inner{padding:56px 48px;}}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.35;letter-spacing:-.3px;position:relative;z-index:2;}
.cta-inner p{position:relative;z-index:2;margin-top:12px;font-size:15px;line-height:1.8;color:#CFEDE8;max-width:44em;margin-left:auto;margin-right:auto;}
.cta-actions{position:relative;z-index:2;margin-top:26px;display:flex;flex-wrap:wrap;gap:12px;justify-content:center;}
.cta-wave{position:absolute;left:0;right:0;bottom:0;opacity:.08;z-index:1;pointer-events:none;}
.cta-scales{position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;background-image:radial-gradient(circle,rgba(255,255,255,.9) 1.5px,transparent 1.6px);background-size:15px 15px;opacity:.12;pointer-events:none;z-index:1;}

/* 页脚 */
.site-footer{background:var(--brand-deep);color:#CFEDE8;position:relative;overflow:hidden;}
.footer-top{position:relative;z-index:2;display:grid;gap:32px;padding:48px 0 36px;grid-template-columns:1fr;}
@media (min-width:640px){.footer-top{grid-template-columns:1fr 1fr;gap:36px;}}
@media (min-width:1024px){.footer-top{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding:56px 0 40px;}}
.footer-brand{display:flex;align-items:center;gap:10px;}
.footer-brand .logo-mark{background:rgba(255,255,255,.12);color:#7FD3C6;}
.footer-brand .logo-name{color:#fff;}
.footer-brand .logo-sub{color:#9FD9CE;}
.footer-about{margin-top:16px;font-size:14px;line-height:1.85;color:#B9DED6;max-width:30em;}
.footer-title{font-size:14px;font-weight:600;color:#7FD3C6;margin-bottom:16px;letter-spacing:.4px;}
.footer-links{display:grid;gap:10px;}
.footer-links a{font-size:14px;color:#CFEDE8;transition:color .2s ease;}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-contact{display:grid;gap:10px;font-size:14px;color:#B9DED6;line-height:1.7;}
.footer-contact strong{color:#CFEDE8;font-weight:600;}
.footer-bottom{position:relative;z-index:2;border-top:1px solid rgba(207,237,232,.2);padding:18px 0 22px;display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;font-size:13px;color:#9FD9CE;}
.footer-bottom a{color:#9FD9CE;}
.footer-bottom a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-scales{position:absolute;left:-70px;bottom:-90px;width:320px;height:320px;border-radius:50%;background-image:radial-gradient(circle,rgba(255,255,255,.85) 1.5px,transparent 1.6px);background-size:16px 16px;opacity:.07;pointer-events:none;z-index:1;}

@media (max-width:639px){
  .footer-top{gap:26px;}
  .footer-title{padding-top:14px;border-top:1px solid rgba(207,237,232,.2);}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.001ms !important;animation-duration:.001ms !important;}
  html{scroll-behavior:auto;}
  .feature-card:hover,.news-card:hover,.price-card:hover{transform:none;}
}

/* roulang page: article */
:root{
  --brand-deep:#0B4F4A;
  --brand:#0F8C7E;
  --brand-light:#E7F5F2;
  --brand-mist:#F2FAF8;
  --accent:#FF7A45;
  --ink:#10211F;
  --ink-soft:#55706B;
  --line:#E1EDEA;
  --paper:#FFFFFF;
  --paper-warm:#F6FBF9;
  --radius-card:16px;
  --radius-btn:12px;
  --shadow-1:0 6px 20px rgba(11,79,74,.07);
  --shadow-2:0 14px 32px rgba(11,79,74,.14);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
}

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

body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--paper-warm);
  -webkit-font-smoothing:antialiased;
}

img{ max-width:100%; display:block; border:0; }
a{ color:inherit; text-decoration:none; }
button{ font-family:inherit; }
h1,h2,h3,h4,p,ul,ol,figure{ margin:0; }
ul,ol{ padding:0; list-style:none; }

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:16px;
  padding-right:16px;
}

/* ---------- 顶部信息条 ---------- */
.topbar{
  background:var(--brand-deep);
  color:#CFEDE8;
  font-size:12.5px;
  line-height:1;
}
.topbar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  height:36px;
}
.topbar-left,.topbar-right{
  display:flex;
  align-items:center;
  gap:12px;
  min-width:0;
}
.topbar-domain{ font-weight:600; letter-spacing:.3px; color:#EAF9F6; }
.topbar-sep{ width:1px; height:12px; background:rgba(207,237,232,.4); }
.topbar-tip{
  color:#B7DFD8;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.topbar-link{
  color:#CFEDE8;
  border-bottom:1px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.topbar-link:hover{ color:#fff; border-bottom-color:var(--accent); }
.btn-xs{
  height:26px;
  padding:0 12px;
  font-size:12px;
  border-radius:999px;
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.topbar .btn-outline{ border-color:rgba(207,237,232,.5); color:#EAF9F6; }
.topbar .btn-outline:hover{ background:rgba(255,255,255,.12); border-color:rgba(255,255,255,.7); color:#fff; }

/* ---------- 主导航 ---------- */
.site-header{ position:sticky; top:0; z-index:60; }
.navbar{
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:saturate(1.4) blur(10px);
  backdrop-filter:saturate(1.4) blur(10px);
  border-bottom:1px solid var(--line);
  box-shadow:0 2px 12px rgba(11,79,74,.04);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  height:68px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  min-width:0;
}
.logo-mark{
  width:38px;height:38px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:11px;
  background:var(--brand-light);
  color:var(--brand);
  flex:none;
  transition:background .2s ease,color .2s ease;
}
.logo:hover .logo-mark{ background:var(--brand); color:#fff; }
.logo-text{ display:flex; flex-direction:column; line-height:1.15; min-width:0; }
.logo-name{
  font-size:18px;
  font-weight:700;
  color:var(--brand-deep);
  letter-spacing:.2px;
  white-space:nowrap;
}
.logo-sub{ font-size:11px; color:var(--ink-soft); letter-spacing:1.2px; }

.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 14px;
  font-size:15px;
  color:var(--ink);
  border-radius:10px;
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{ color:var(--brand); background:var(--brand-light); }
.nav-link.active{ color:var(--brand); font-weight:600; }
.nav-link.active::after{
  content:"";
  position:absolute;
  left:14px; right:14px; bottom:4px;
  height:2px;
  border-radius:2px;
  background:var(--accent);
}
.nav-actions{ display:flex; align-items:center; gap:10px; }
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--line);
  border-radius:11px;
  background:#fff;
  color:var(--brand-deep);
  align-items:center;justify-content:center;
  cursor:pointer;
  transition:border-color .2s ease,background .2s ease;
}
.nav-toggle:hover{ border-color:var(--brand); background:var(--brand-light); }

.mobile-drawer{
  border-bottom:1px solid var(--line);
  background:#fff;
  box-shadow:var(--shadow-1);
  padding:12px 16px 18px;
}
.mobile-drawer[hidden]{ display:none; }
.mobile-drawer a{
  display:flex;
  align-items:center;
  min-height:44px;
  padding:0 12px;
  border-radius:12px;
  font-size:15px;
  color:var(--ink);
  transition:background .2s ease,color .2s ease;
}
.mobile-drawer a:hover{ background:var(--brand-light); color:var(--brand); }
.mobile-drawer .drawer-cta{
  margin-top:8px;
  justify-content:center;
  background:var(--accent);
  color:#fff;
  font-weight:600;
}
.mobile-drawer .drawer-cta:hover{ background:#f0662e; color:#fff; }

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 20px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .12s ease;
}
.btn:active{ transform:scale(.98); }
.btn:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
}
.btn-primary{ background:var(--accent); color:#fff; box-shadow:0 6px 18px rgba(255,122,69,.28); }
.btn-primary:hover{ background:#f0662e; color:#fff; }
.btn-brand{ background:var(--brand); color:#fff; }
.btn-brand:hover{ background:var(--brand-deep); color:#fff; }
.btn-outline{
  background:transparent;
  border-color:var(--line);
  color:var(--brand-deep);
}
.btn-outline:hover{ background:var(--brand-light); border-color:var(--brand); color:var(--brand-deep); }
.btn-ghost-light{
  background:transparent;
  border-color:rgba(255,255,255,.45);
  color:#fff;
}
.btn-ghost-light:hover{ background:rgba(255,255,255,.14); border-color:#fff; color:#fff; }
.btn:disabled,.btn[disabled]{ opacity:.45; cursor:not-allowed; }

/* ---------- 面包屑 ---------- */
.crumbs{
  padding:22px 0 0;
  font-size:13px;
  color:var(--ink-soft);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
}
.crumbs a{ color:var(--ink-soft); transition:color .2s ease; }
.crumbs a:hover{ color:var(--brand); }
.crumbs .sep{ color:#B6CBC6; }
.crumbs .current{ color:var(--ink-soft); }

/* ---------- 文章头部 ---------- */
.article-head{
  padding:18px 0 28px;
  border-bottom:1px solid var(--line);
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  background:var(--brand-light);
  color:var(--brand);
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.2px;
}
.article-title{
  margin-top:14px;
  max-width:760px;
  font-size:clamp(24px,3vw,34px);
  line-height:1.34;
  font-weight:700;
  color:var(--brand-deep);
  letter-spacing:.2px;
}
.article-meta{
  margin-top:16px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--ink-soft);
  font-variant-numeric:tabular-nums;
}
.article-meta .dot{ width:1px; height:12px; background:var(--line); }

/* ---------- 正文 ---------- */
.article-wrap{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  padding:32px 24px 36px;
  margin-top:28px;
}
.article-body{
  max-width:760px;
  margin:0 auto;
  font-size:17px;
  line-height:1.9;
  color:var(--ink);
  overflow-wrap:break-word;
  word-break:break-word;
}
.article-body p{ margin:0 0 1.25em; }
.article-body h2{
  font-size:21px;
  line-height:1.5;
  font-weight:700;
  color:var(--brand-deep);
  margin:40px 0 16px;
  padding-left:12px;
  border-left:4px solid var(--brand);
}
.article-body h3{
  font-size:18px;
  line-height:1.6;
  font-weight:600;
  color:var(--brand-deep);
  margin:28px 0 12px;
}
.article-body h4{
  font-size:16px;
  font-weight:600;
  margin:22px 0 10px;
  color:var(--brand-deep);
}
.article-body ul,.article-body ol{ margin:0 0 1.25em; padding-left:0; }
.article-body ul li{
  position:relative;
  padding-left:20px;
  margin-bottom:8px;
}
.article-body ul li::before{
  content:"";
  position:absolute;
  left:2px;
  top:.78em;
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--brand);
}
.article-body ol{ counter-reset:li; padding-left:22px; list-style:decimal; }
.article-body ol li{ margin-bottom:8px; }
.article-body blockquote{
  margin:24px 0;
  padding:16px 20px;
  background:var(--brand-light);
  border-left:3px solid var(--accent);
  border-radius:8px;
  color:var(--brand-deep);
}
.article-body blockquote p:last-child{ margin-bottom:0; }
.article-body img{
  max-width:100%;
  height:auto;
  border-radius:12px;
  margin:24px auto;
}
.article-body figure{ margin:24px 0; }
.article-body figcaption{
  text-align:center;
  font-size:13px;
  color:var(--ink-soft);
  margin-top:10px;
}
.article-body a{
  color:var(--brand);
  text-decoration:underline;
  text-underline-offset:2px;
}
.article-body a:hover{ color:var(--brand-deep); }
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:24px 0;
  font-size:15px;
  line-height:1.7;
}
.article-body th,.article-body td{
  border:1px solid var(--line);
  padding:10px 14px;
  text-align:left;
  vertical-align:top;
}
.article-body th{
  background:var(--brand-light);
  color:var(--brand-deep);
  font-weight:600;
}
.article-body hr{
  border:0;
  border-top:1px solid var(--line);
  margin:32px 0;
}
.article-body code{
  background:var(--brand-mist);
  border:1px solid var(--line);
  border-radius:6px;
  padding:1px 6px;
  font-size:14px;
}
.article-body pre{
  background:var(--brand-mist);
  border:1px solid var(--line);
  border-radius:12px;
  padding:16px;
  overflow-x:auto;
  margin:24px 0;
}
.article-body pre code{ background:none; border:0; padding:0; }

.empty-state{
  max-width:760px;
  margin:0 auto;
  text-align:center;
  padding:56px 20px;
  border:1px dashed #BFE3DC;
  border-radius:var(--radius-card);
  background:var(--brand-mist);
}
.empty-state svg{ margin:0 auto 14px; color:var(--brand); }
.empty-state p{ font-size:15px; color:var(--ink-soft); margin-bottom:18px; }

/* ---------- 文章尾部 ---------- */
.back-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:28px;
  font-size:14px;
  color:var(--brand);
  font-weight:600;
  transition:color .2s ease,gap .2s ease;
}
.back-link:hover{ color:var(--brand-deep); gap:12px; }

.section{ padding:56px 0; }
.section-alt{ background:var(--brand-mist); }
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  margin-bottom:24px;
}
.section-title{
  font-size:clamp(21px,2.4vw,26px);
  font-weight:700;
  color:var(--brand-deep);
  letter-spacing:.2px;
}
.section-desc{
  margin-top:8px;
  font-size:14.5px;
  color:var(--ink-soft);
  max-width:640px;
}

.related-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
}
.related-card{
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:22px 22px 20px;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.related-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-2);
  border-color:#BFE3DC;
}
.related-card .related-tag{
  font-size:12px;
  font-weight:600;
  letter-spacing:.4px;
  color:var(--brand);
  background:var(--brand-light);
  border-radius:999px;
  padding:3px 10px;
  align-self:flex-start;
}
.related-card h3{
  font-size:17px;
  font-weight:600;
  line-height:1.55;
  color:var(--brand-deep);
}
.related-card p{
  font-size:14px;
  line-height:1.75;
  color:var(--ink-soft);
}
.related-card .related-more{
  margin-top:auto;
  font-size:13px;
  font-weight:600;
  color:var(--brand);
  display:inline-flex;
  align-items:center;
  gap:6px;
  transition:color .2s ease,gap .2s ease;
}
.related-card:hover .related-more{ color:var(--accent); gap:10px; }

/* ---------- CTA 带 ---------- */
.cta-band{
  background:var(--brand-deep);
  border-radius:20px;
  padding:40px 28px;
  position:relative;
  overflow:hidden;
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
}
.cta-band::before{
  content:"";
  position:absolute;
  right:-40px; top:-60px;
  width:280px; height:280px;
  background-image:radial-gradient(circle at 50% 50%, rgba(255,255,255,.5) 0 2px, transparent 2.5px);
  background-size:18px 18px;
  opacity:.08;
  pointer-events:none;
}
.cta-band h2{
  font-size:clamp(20px,2.4vw,26px);
  font-weight:700;
  line-height:1.45;
  margin-bottom:8px;
}
.cta-band p{
  font-size:14.5px;
  color:#BFE3DC;
  max-width:560px;
}
.cta-actions{ display:flex; gap:12px; flex-wrap:wrap; position:relative; z-index:1; }

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  background:var(--brand-deep);
  color:#CFEDE8;
  margin-top:56px;
  overflow:hidden;
}
.footer-scales{
  position:absolute;
  left:0; right:0; top:0;
  height:120px;
  background-image:radial-gradient(circle at 50% 50%, rgba(255,255,255,.45) 0 2px, transparent 2.5px);
  background-size:18px 18px;
  opacity:.05;
  pointer-events:none;
}
.footer-top{
  position:relative;
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.4fr;
  gap:32px;
  padding:52px 0 40px;
}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
}
.footer-brand .logo-mark{
  background:rgba(255,255,255,.1);
  color:#7FD3C6;
}
.footer-brand:hover .logo-mark{ background:rgba(255,255,255,.18); color:#fff; }
.footer-brand .logo-name{ color:#fff; }
.footer-brand .logo-sub{ color:#7FD3C6; }
.footer-about{
  font-size:14px;
  line-height:1.85;
  color:#BFE3DC;
  max-width:320px;
}
.footer-title{
  font-size:14px;
  font-weight:600;
  color:#7FD3C6;
  margin-bottom:16px;
  letter-spacing:.3px;
}
.footer-links{ display:flex; flex-direction:column; gap:10px; }
.footer-links a{
  font-size:14px;
  color:#CFEDE8;
  width:fit-content;
  border-bottom:1px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.footer-links a:hover{ color:#fff; border-bottom-color:#fff; }
.footer-contact{ display:flex; flex-direction:column; gap:10px; font-size:14px; color:#BFE3DC; line-height:1.75; }
.footer-contact strong{ color:#EAF9F6; font-weight:600; }
.footer-bottom{
  position:relative;
  border-top:1px solid rgba(207,237,232,.18);
  padding:18px 0 22px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  font-size:13px;
  color:#9FCCC5;
}

/* ---------- 响应式 ---------- */
@media (min-width:768px){
  .container{ padding-left:24px; padding-right:24px; }
  .section{ padding:80px 0; }
  .article-wrap{ padding:44px 40px 48px; }
}
@media (min-width:1024px){
  .container{ padding-left:32px; padding-right:32px; }
  .section{ padding:104px 0; }
  .article-wrap{ padding:52px 56px 56px; }
}
@media (max-width:1023px){
  .nav-links{ display:none; }
  .nav-toggle{ display:inline-flex; }
  .related-grid{ grid-template-columns:repeat(2,minmax(0,1fr)); }
  .footer-top{ grid-template-columns:repeat(2,minmax(0,1fr)); gap:28px; }
  .footer-about{ max-width:none; }
}
@media (max-width:767px){
  .nav-cta{ display:none; }
  .topbar-tip{ display:none; }
  .topbar-right .topbar-link{ display:none; }
  .nav-inner{ height:62px; }
  .logo-name{ font-size:16px; }
  .article-head{ padding:14px 0 22px; }
  .section{ padding:48px 0; }
  .related-grid{ grid-template-columns:1fr; }
  .cta-band{ padding:30px 22px; }
  .footer-top{ grid-template-columns:1fr; padding:38px 0 28px; gap:24px; }
  .footer-title{ padding-top:18px; border-top:1px solid rgba(207,237,232,.18); }
  .footer-top > div:first-child .footer-title{ border-top:0; padding-top:0; }
  .footer-bottom{ flex-direction:column; align-items:flex-start; }
  .section-head{ align-items:flex-start; }
}
@media (max-width:519px){
  .article-wrap{ padding:24px 18px 28px; border-radius:14px; }
  .article-body{ font-size:16px; line-height:1.85; }
  .cta-actions .btn{ width:100%; }
  .topbar-left{ gap:8px; font-size:12px; }
}
@media (prefers-reduced-motion:reduce){
  *{ transition-duration:.01ms !important; animation-duration:.01ms !important; }
  .related-card:hover{ transform:none; }
}

/* roulang page: category1 */
:root{
    --brand-deep:#0B4F4A;
    --brand:#0F8C7E;
    --brand-light:#E7F5F2;
    --brand-tint:#F2FAF8;
    --accent:#FF7A45;
    --ink:#10211F;
    --ink-soft:#55706B;
    --line:#E1EDEA;
    --paper:#FFFFFF;
    --paper-warm:#F6FBF9;
    --radius-card:16px;
    --radius-btn:12px;
    --shadow-1:0 6px 20px rgba(11,79,74,.07);
    --shadow-2:0 14px 32px rgba(11,79,74,.14);
    --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;scroll-padding-top:96px;}
  body{
    margin:0;
    font-family:var(--font-sans);
    font-size:16px;
    line-height:1.75;
    color:var(--ink);
    background:var(--paper-warm);
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  img{display:block;max-width:100%;height:auto;}
  a{color:inherit;text-decoration:none;}
  button{font:inherit;color:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:.2px;}
  p{margin:0;}
  strong{font-variant-numeric:tabular-nums;}

  .container{width:100%;max-width:1200px;margin:0 auto;padding-left:16px;padding-right:16px;}
  @media (min-width:768px){.container{padding-left:24px;padding-right:24px;}}
  @media (min-width:1024px){.container{padding-left:32px;padding-right:32px;}}

  /* ============ 顶部信息条 ============ */
  .topbar{background:var(--brand-deep);color:#CFEDE8;font-size:13px;}
  .topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px;padding-top:6px;padding-bottom:6px;flex-wrap:wrap;}
  .topbar-left{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
  .topbar-domain{font-weight:600;letter-spacing:.04em;color:#E8FBF6;}
  .topbar-divider{width:1px;height:14px;background:rgba(255,255,255,.25);}
  .topbar-note{color:#B8E4DC;}
  .topbar-right{display:flex;align-items:center;gap:14px;}
  .topbar-link{color:#CFEDE8;border-bottom:1px solid transparent;transition:color .2s,border-color .2s;}
  .topbar-link:hover{color:#fff;border-color:rgba(255,255,255,.6);}
  .topbar-link:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;}
  .topbar-btn{
    display:inline-flex;align-items:center;justify-content:center;
    padding:5px 14px;border-radius:999px;font-size:12.5px;font-weight:600;
    border:1px solid rgba(255,255,255,.34);color:#EAFBF7;
    transition:background-color .2s,border-color .2s,color .2s;
  }
  .topbar-btn:hover{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.6);color:#fff;}
  .topbar-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
  @media (max-width:667px){
    .topbar-note{display:none;}
    .topbar-inner{justify-content:space-between;}
  }

  /* ============ 主导航 ============ */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(255,255,255,.94);
    backdrop-filter:saturate(150%) blur(12px);
    -webkit-backdrop-filter:saturate(150%) blur(12px);
    border-bottom:1px solid var(--line);
  }
  .nav-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:70px;}
  .brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
  .brand:focus-visible{outline:2px solid var(--accent);outline-offset:4px;border-radius:10px;}
  .logo-mark{
    display:inline-flex;align-items:center;justify-content:center;
    width:38px;height:38px;border-radius:11px;
    background:var(--brand-light);color:var(--brand-deep);
    flex-shrink:0;
  }
  .logo-text{display:flex;flex-direction:column;line-height:1.15;}
  .logo-name{font-size:17px;font-weight:800;color:var(--brand-deep);letter-spacing:.02em;}
  .logo-sub{font-size:11px;color:var(--ink-soft);letter-spacing:.12em;margin-top:2px;}
  .nav-links{display:none;align-items:center;gap:6px;}
  .nav-link{
    position:relative;padding:8px 14px;border-radius:10px;
    font-size:15px;font-weight:500;color:var(--ink);
    transition:color .2s,background-color .2s;
  }
  .nav-link:hover{color:var(--brand);background:var(--brand-tint);}
  .nav-link:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
  .nav-link.active{color:var(--brand);font-weight:700;}
  .nav-link.active::after{
    content:"";position:absolute;left:14px;right:14px;bottom:2px;
    height:2px;border-radius:2px;background:var(--accent);
  }
  .nav-actions{display:flex;align-items:center;gap:10px;}
  .menu-toggle{
    display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
    width:42px;height:42px;padding:0;border-radius:10px;
    border:1px solid var(--line);background:#fff;cursor:pointer;
    transition:background-color .2s,border-color .2s;
  }
  .menu-toggle:hover{background:var(--brand-tint);border-color:var(--brand-light);}
  .menu-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
  .menu-toggle span{display:block;width:18px;height:2px;margin:0 auto;border-radius:2px;background:var(--brand-deep);transition:transform .2s,opacity .2s;}
  .menu-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
  .menu-toggle.open span:nth-child(2){opacity:0;}
  .menu-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
  .mobile-menu{display:none;border-top:1px solid var(--line);background:#fff;}
  .mobile-menu.open{display:block;}
  .mobile-menu .container{padding-top:10px;padding-bottom:16px;}
  .mobile-menu a{
    display:flex;align-items:center;min-height:44px;padding:0 12px;
    border-radius:12px;font-size:15px;color:var(--ink);font-weight:500;
  }
  .mobile-menu a:hover{background:var(--brand-tint);color:var(--brand);}
  .mobile-menu a.active{color:var(--brand);font-weight:700;background:var(--brand-tint);}
  .mobile-menu a:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
  .mobile-menu .btn{margin-top:10px;width:100%;}
  @media (min-width:1024px){
    .nav-links{display:flex;}
    .menu-toggle{display:none;}
    .nav-actions .btn-sm{display:inline-flex;}
  }
  @media (max-width:1023px){
    .nav-actions .btn-sm{display:none;}
  }

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:13px 24px;border-radius:var(--radius-btn);border:1px solid transparent;
    font-size:15px;font-weight:600;line-height:1;cursor:pointer;
    transition:background-color .2s,color .2s,border-color .2s,box-shadow .2s,transform .2s;
  }
  .btn:active{transform:scale(.98);}
  .btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
  .btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(255,122,69,.26);}
  .btn-primary:hover{background:#f0662b;box-shadow:0 12px 26px rgba(255,122,69,.32);}
  .btn-solid{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(15,140,126,.2);}
  .btn-solid:hover{background:var(--brand-deep);}
  .btn-outline{background:#fff;color:var(--brand-deep);border-color:var(--line);}
  .btn-outline:hover{background:var(--brand-light);border-color:var(--brand-light);}
  .btn-light{background:#fff;color:var(--brand-deep);border-color:#fff;}
  .btn-light:hover{background:var(--brand-light);border-color:var(--brand-light);}
  .btn-ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5);}
  .btn-ghost-light:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.8);}
  .btn-sm{padding:10px 18px;font-size:14px;}
  .btn-block{width:100%;}

  /* ============ 区块通用 ============ */
  .section{padding-top:56px;padding-bottom:56px;}
  @media (min-width:768px){.section{padding-top:80px;padding-bottom:80px;}}
  @media (min-width:1024px){.section{padding-top:104px;padding-bottom:104px;}}
  .section-tight{padding-top:36px;padding-bottom:36px;}
  .section-alt{background:var(--brand-tint);}
  .section-head{max-width:720px;margin-bottom:32px;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:6px;
    padding:5px 12px;border-radius:999px;
    background:var(--brand-light);color:var(--brand-deep);
    font-size:12px;font-weight:600;letter-spacing:.06em;
  }
  .section-head h2{font-size:clamp(22px,2.6vw,30px);margin-top:14px;}
  .section-head p{margin-top:12px;color:var(--ink-soft);font-size:15px;line-height:1.85;}

  /* ============ 面包屑 ============ */
  .breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-soft);flex-wrap:wrap;}
  .breadcrumb a{color:var(--ink-soft);transition:color .2s;}
  .breadcrumb a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
  .breadcrumb a:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;}
  .breadcrumb .sep{color:#9CB8B3;}
  .breadcrumb .current{color:var(--brand-deep);font-weight:600;}

  /* ============ Hero ============ */
  .hero{
    position:relative;overflow:hidden;
    background:linear-gradient(135deg,var(--paper-warm) 0%,#ffffff 58%,var(--brand-tint) 100%);
    padding-top:36px;padding-bottom:48px;
  }
  .hero::after{
    content:"";position:absolute;right:-60px;bottom:-80px;width:420px;height:420px;
    background-image:radial-gradient(circle,var(--brand) 1.6px,transparent 1.7px);
    background-size:18px 18px;opacity:.07;pointer-events:none;
  }
  .hero-copy{position:relative;z-index:2;max-width:800px;margin-top:22px;}
  .hero h1{
    font-size:clamp(28px,4.2vw,46px);
    line-height:1.22;font-weight:800;
    color:var(--brand-deep);margin-top:16px;letter-spacing:.01em;
  }
  .hero-sub{margin-top:16px;font-size:16px;line-height:1.85;color:var(--ink-soft);max-width:640px;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
  .hero-stats{
    display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
    gap:0;margin-top:34px;max-width:520px;
    border-top:1px solid var(--line);padding-top:20px;
  }
  .hero-stats li{padding-right:16px;border-right:1px solid var(--line);}
  .hero-stats li:last-child{border-right:0;}
  .hero-stats li + li{padding-left:18px;}
  .hero-stats strong{display:block;font-size:24px;font-weight:800;color:var(--brand-deep);line-height:1.2;}
  .hero-stats span{font-size:13px;color:var(--ink-soft);}

  /* ============ 横向大图 ============ */
  .banner-wrap{padding-bottom:8px;}
  .banner{
    position:relative;border-radius:16px;overflow:hidden;
    aspect-ratio:21/9;box-shadow:var(--shadow-1);background:var(--brand-light);
  }
  .banner img{width:100%;height:100%;object-fit:cover;}
  .banner-caption{
    position:absolute;left:16px;bottom:16px;
    display:inline-flex;align-items:center;gap:8px;
    padding:8px 14px;border-radius:999px;
    background:rgba(11,79,74,.82);color:#EAFBF7;font-size:13px;font-weight:500;
    backdrop-filter:blur(4px);
  }
  @media (max-width:640px){
    .banner{aspect-ratio:16/9;}
    .banner-caption{left:12px;bottom:12px;font-size:12px;padding:6px 12px;}
  }

  /* ============ 图文两栏 + 目录卡 ============ */
  .overview-grid{display:grid;grid-template-columns:1fr;gap:32px;}
  @media (min-width:1024px){
    .overview-grid{grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:48px;align-items:start;}
  }
  .overview-main h2{font-size:clamp(21px,2.4vw,28px);color:var(--brand-deep);}
  .overview-main h3{
    font-size:18px;margin-top:30px;padding-left:12px;border-left:4px solid var(--brand);
    color:var(--ink);
  }
  .overview-main p{margin-top:14px;font-size:16px;line-height:1.85;color:#25403C;}
  .overview-main p.muted{color:var(--ink-soft);font-size:15px;}
  .point-list{margin-top:18px;display:grid;gap:10px;}
  .point-list li{
    position:relative;padding-left:16px;font-size:15px;line-height:1.8;color:#2C4A46;
    border-left:4px solid var(--brand);padding-top:2px;padding-bottom:2px;
  }
  .point-list li strong{color:var(--brand-deep);}

  .toc-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    padding:24px;box-shadow:var(--shadow-1);
  }
  @media (min-width:1024px){
    .overview-side{position:sticky;top:96px;}
  }
  .toc-title{
    font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--ink-soft);
    text-transform:uppercase;
  }
  .toc-list{margin-top:14px;display:grid;gap:2px;}
  .toc-link{
    display:block;padding:9px 12px;border-left:3px solid transparent;border-radius:8px;
    font-size:14.5px;color:var(--ink-soft);transition:color .2s,background-color .2s,border-color .2s;
  }
  .toc-link:hover{color:var(--brand);background:var(--brand-tint);}
  .toc-link:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
  .toc-link.active{color:var(--brand-deep);font-weight:700;background:var(--brand-tint);border-left-color:var(--accent);}
  .toc-card .btn{margin-top:20px;}
  .toc-note{
    margin-top:14px;font-size:12.5px;line-height:1.7;color:var(--ink-soft);
    padding-top:14px;border-top:1px dashed var(--line);
  }

  /* ============ 功能卡片网格 ============ */
  .feature-grid{display:grid;grid-template-columns:1fr;gap:16px;}
  @media (min-width:640px){.feature-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}}
  @media (min-width:1024px){.feature-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}}
  .feature-card{
    position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    padding:26px 24px;box-shadow:var(--shadow-1);
    transition:transform .2s,box-shadow .2s,border-color .2s;
  }
  .feature-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--brand-light);}
  .feature-card:focus-within{border-color:var(--brand);box-shadow:var(--shadow-2);}
  .feature-num{
    display:inline-flex;align-items:center;justify-content:center;
    width:40px;height:40px;border-radius:11px;
    background:var(--brand-light);color:var(--brand-deep);
    font-size:15px;font-weight:800;font-variant-numeric:tabular-nums;
  }
  .feature-card h3{margin-top:16px;font-size:18px;font-weight:700;color:var(--ink);}
  .feature-card p{margin-top:10px;font-size:14.5px;line-height:1.8;color:var(--ink-soft);}
  .feature-tag{
    display:inline-block;margin-top:16px;padding:4px 10px;border-radius:999px;
    background:var(--brand-tint);color:var(--brand);font-size:12px;font-weight:600;
  }
  .feature-card::after{
    content:"";position:absolute;right:18px;top:18px;width:52px;height:52px;
    background-image:radial-gradient(circle,var(--brand) 1.2px,transparent 1.3px);
    background-size:9px 9px;opacity:.08;pointer-events:none;
  }

  /* ============ 流程 ============ */
  .flow-grid{display:grid;grid-template-columns:1fr;gap:16px;}
  @media (min-width:768px){.flow-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
  @media (min-width:1024px){.flow-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}}
  .flow-step{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    padding:24px 22px;position:relative;transition:box-shadow .2s,transform .2s;
  }
  .flow-step:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
  .flow-step .step-index{
    font-size:13px;font-weight:800;letter-spacing:.16em;color:var(--accent);
    font-variant-numeric:tabular-nums;
  }
  .flow-step h3{margin-top:10px;font-size:17px;color:var(--brand-deep);}
  .flow-step p{margin-top:8px;font-size:14.5px;line-height:1.8;color:var(--ink-soft);}

  /* ============ 反馈 & 数据 ============ */
  .cases-grid{display:grid;grid-template-columns:1fr;gap:24px;}
  @media (min-width:1024px){.cases-grid{grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:40px;align-items:start;}}
  .metrics{background:var(--brand-deep);color:#fff;border-radius:var(--radius-card);padding:30px 26px;position:relative;overflow:hidden;}
  .metrics::after{
    content:"";position:absolute;right:-20px;top:-20px;width:180px;height:180px;
    background-image:radial-gradient(circle,#7FD3C6 1.4px,transparent 1.5px);
    background-size:14px 14px;opacity:.16;pointer-events:none;
  }
  .metrics h3{font-size:18px;color:#EAFBF7;}
  .metric-list{margin-top:20px;display:grid;gap:18px;}
  .metric-list li{display:flex;align-items:baseline;gap:10px;border-bottom:1px solid rgba(255,255,255,.14);padding-bottom:16px;}
  .metric-list li:last-child{border-bottom:0;padding-bottom:0;}
  .metric-list strong{font-size:34px;font-weight:800;color:#fff;line-height:1;font-variant-numeric:tabular-nums;}
  .metric-list .unit{font-size:14px;color:#9FD9CE;}
  .metric-list .desc{font-size:13.5px;color:#CFEDE8;line-height:1.7;}
  .quote-stack{display:grid;gap:16px;}
  .quote-card{
    background:#fff;border:1px solid var(--line);border-left:3px solid var(--accent);
    border-radius:14px;padding:22px 24px;box-shadow:var(--shadow-1);
    transition:box-shadow .2s,transform .2s;
  }
  .quote-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
  .quote-card p{font-size:15px;line-height:1.85;color:#25403C;}
  .quote-meta{display:flex;align-items:center;gap:10px;margin-top:14px;flex-wrap:wrap;}
  .quote-meta .who{font-size:13.5px;font-weight:600;color:var(--brand-deep);}
  .quote-meta .tag{
    padding:3px 10px;border-radius:999px;background:var(--brand-light);
    color:var(--brand);font-size:12px;font-weight:600;
  }
  .cases-media{margin-top:16px;border-radius:14px;overflow:hidden;aspect-ratio:16/9;background:var(--brand-light);}
  .cases-media img{width:100%;height:100%;object-fit:cover;}

  /* ============ FAQ ============ */
  .faq-list{display:grid;gap:10px;max-width:900px;}
  .faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:border-color .2s,box-shadow .2s;}
  .faq-item.open{border-color:var(--brand-light);box-shadow:var(--shadow-1);}
  .faq-q{
    display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;
    padding:18px 20px;background:none;border:0;text-align:left;cursor:pointer;
    font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;
  }
  .faq-q:hover{color:var(--brand);}
  .faq-q:focus-visible{outline:2px solid var(--accent);outline-offset:-2px;}
  .faq-icon{
    flex-shrink:0;width:22px;height:22px;position:relative;color:var(--brand);
    transition:transform .2s;
  }
  .faq-icon::before,.faq-icon::after{
    content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;
  }
  .faq-icon::before{width:14px;height:2px;transform:translate(-50%,-50%);}
  .faq-icon::after{width:2px;height:14px;transform:translate(-50%,-50%);transition:opacity .2s;}
  .faq-item.open .faq-icon{transform:rotate(45deg);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;}
  .faq-a-inner{padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--ink-soft);}

  /* ============ 相关分类 ============ */
  .related-grid{display:grid;grid-template-columns:1fr;gap:14px;}
  @media (min-width:768px){.related-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}}
  .related-card{
    display:flex;align-items:center;justify-content:space-between;gap:14px;
    padding:20px 22px;border-radius:14px;background:#fff;border:1px solid var(--line);
    transition:border-color .2s,box-shadow .2s,transform .2s;
  }
  .related-card:hover{border-color:var(--brand-light);box-shadow:var(--shadow-2);transform:translateY(-2px);}
  .related-card:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
  .related-card .rc-title{font-size:16px;font-weight:700;color:var(--brand-deep);}
  .related-card .rc-desc{font-size:13.5px;color:var(--ink-soft);margin-top:4px;line-height:1.7;}
  .related-card .rc-arrow{color:var(--accent);font-size:18px;flex-shrink:0;transition:transform .2s;}
  .related-card:hover .rc-arrow{transform:translateX(4px);}

  /* ============ CTA ============ */
  .cta-wrap{padding-top:24px;padding-bottom:56px;}
  @media (min-width:768px){.cta-wrap{padding-bottom:80px;}}
  .cta{
    position:relative;overflow:hidden;background:var(--brand-deep);color:#fff;
    border-radius:20px;padding:40px 28px;
  }
  @media (min-width:768px){.cta{padding:56px 48px;}}
  .cta::before{
    content:"";position:absolute;right:-40px;bottom:-60px;width:320px;height:320px;
    background-image:radial-gradient(circle,#7FD3C6 1.6px,transparent 1.7px);
    background-size:16px 16px;opacity:.16;pointer-events:none;
  }
  .cta-inner{position:relative;z-index:2;display:flex;flex-direction:column;gap:24px;}
  @media (min-width:900px){
    .cta-inner{flex-direction:row;align-items:center;justify-content:space-between;gap:40px;}
  }
  .cta h2{font-size:clamp(21px,2.6vw,30px);color:#fff;max-width:620px;line-height:1.35;}
  .cta p{margin-top:12px;font-size:15px;line-height:1.85;color:#B8E4DC;max-width:560px;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex-shrink:0;}

  /* ============ 页脚 ============ */
  .site-footer{
    position:relative;overflow:hidden;background:var(--brand-deep);color:#CFEDE8;
    padding-top:56px;
  }
  @media (min-width:768px){.site-footer{padding-top:72px;}}
  .footer-scales{
    position:absolute;right:-50px;top:-60px;width:340px;height:340px;
    background-image:radial-gradient(circle,#7FD3C6 1.5px,transparent 1.6px);
    background-size:15px 15px;opacity:.1;pointer-events:none;
  }
  .footer-top{
    position:relative;z-index:2;
    display:grid;grid-template-columns:1fr;gap:32px;padding-bottom:40px;
  }
  @media (min-width:768px){.footer-top{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px;}}
  @media (min-width:1024px){.footer-top{grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;}}
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
  .site-footer .logo-mark{background:rgba(255,255,255,.12);color:#7FD3C6;}
  .site-footer .logo-name{color:#fff;font-size:17px;}
  .site-footer .logo-sub{color:#8FCFC5;}
  .footer-about{font-size:14px;line-height:1.85;color:#B8E4DC;max-width:360px;}
  .footer-title{font-size:14px;font-weight:600;color:#7FD3C6;margin-bottom:14px;}
  .footer-links{display:grid;gap:2px;}
  .footer-links a{
    display:inline-block;font-size:14px;color:#CFEDE8;padding:6px 0;
    transition:color .2s;
  }
  .footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
  .footer-links a:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;}
  .footer-contact{display:grid;gap:10px;font-size:14px;line-height:1.8;color:#B8E4DC;}
  .footer-contact strong{color:#EAFBF7;font-weight:600;}
  .footer-bottom{
    position:relative;z-index:2;
    display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
    border-top:1px solid rgba(255,255,255,.14);
    padding-top:18px;padding-bottom:22px;font-size:13px;color:#9FD9CE;
  }
  @media (max-width:767px){
    .footer-top{gap:26px;}
    .footer-title{padding-top:14px;border-top:1px solid rgba(255,255,255,.12);}
    .footer-brand{margin-bottom:12px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px;}
  }

  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;}
    html{scroll-behavior:auto;}
    .feature-card:hover,.flow-step:hover,.quote-card:hover,.related-card:hover{transform:none;}
  }

/* roulang page: category2 */
:root {
    --brand-deep: #0B4F4A;
    --brand: #0F8C7E;
    --brand-light: #E7F5F2;
    --brand-pale: #F2FAF8;
    --accent: #FF7A45;
    --ink: #10211F;
    --ink-soft: #55706B;
    --line: #E1EDEA;
    --paper: #FFFFFF;
    --paper-warm: #F6FBF9;
    --radius-card: 16px;
    --radius-btn: 12px;
    --shadow-sm: 0 6px 20px rgba(11, 79, 74, .07);
    --shadow-lg: 0 14px 32px rgba(11, 79, 74, .14);
    --pad-y: 56px;
  }
  @media (min-width: 768px) { :root { --pad-y: 80px; } }
  @media (min-width: 1024px) { :root { --pad-y: 104px; } }

  *, *::before, *::after { box-sizing: border-box; }
  html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
  body {
    margin: 0;
    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", system-ui, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--ink);
    background: var(--paper-warm);
    -webkit-font-smoothing: antialiased;
    font-variant-numeric: tabular-nums;
  }
  img { display: block; max-width: 100%; height: auto; }
  a { color: inherit; text-decoration: none; }
  button { font: inherit; color: inherit; }
  h1, h2, h3, h4, p, ul, ol, figure { margin: 0; }
  ul, ol { padding: 0; list-style: none; }

  .container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 16px; }
  @media (min-width: 768px) { .container { padding: 0 24px; } }
  @media (min-width: 1024px) { .container { padding: 0 32px; } }

  /* ============ 顶部信息条 ============ */
  .topbar { background: var(--brand-deep); color: #CFEDE8; font-size: 13px; }
  .topbar-inner {
    display: flex; align-items: center; justify-content: space-between;
    gap: 16px; min-height: 36px;
  }
  .topbar-left { display: flex; align-items: center; gap: 10px; min-width: 0; }
  .topbar-domain { font-weight: 600; letter-spacing: .04em; }
  .topbar-divider { width: 1px; height: 12px; background: rgba(207, 237, 232, .4); flex: none; }
  .topbar-hint { color: #A8DCD3; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .topbar-right { display: flex; align-items: center; gap: 12px; flex: none; }
  .topbar-link { color: #CFEDE8; transition: color .2s ease; }
  .topbar-link:hover { color: #fff; text-decoration: underline; text-underline-offset: 3px; }
  .topbar-link:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
  .topbar-btn {
    display: inline-flex; align-items: center; height: 24px; padding: 0 11px;
    border-radius: 999px; border: 1px solid rgba(207, 237, 232, .5);
    font-size: 12px; color: #EAF9F6;
    transition: background .2s ease, border-color .2s ease, color .2s ease;
  }
  .topbar-btn:hover { background: rgba(255, 255, 255, .14); border-color: #fff; color: #fff; }
  .topbar-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
  @media (max-width: 767px) {
    .topbar-hint, .topbar-link { display: none; }
  }

  /* ============ 主导航 ============ */
  .site-header {
    position: sticky; top: 0; z-index: 50;
    background: rgba(255, 255, 255, .94);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line);
  }
  .header-inner {
    position: relative;
    display: flex; align-items: center; justify-content: space-between;
    gap: 20px; min-height: 70px;
  }
  .logo { display: inline-flex; align-items: center; gap: 10px; }
  .logo-mark {
    width: 40px; height: 40px; flex: none;
    border-radius: 12px; background: var(--brand-light); color: var(--brand);
    display: grid; place-items: center;
    transition: background .2s ease, color .2s ease;
  }
  .logo:hover .logo-mark { background: var(--brand); color: #fff; }
  .logo:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 8px; }
  .logo-name { display: block; font-size: 18px; font-weight: 700; letter-spacing: -.01em; line-height: 1.3; }
  .logo-sub { display: block; font-size: 11px; color: var(--ink-soft); letter-spacing: .1em; line-height: 1.3; }

  .nav-links { display: flex; align-items: center; gap: 4px; }
  .nav-link {
    position: relative;
    display: inline-flex; align-items: center; height: 44px; padding: 0 14px;
    border-radius: 10px; font-size: 15px; font-weight: 500; color: var(--ink-soft);
    transition: color .2s ease, background .2s ease;
  }
  .nav-link:hover { color: var(--brand); background: var(--brand-pale); }
  .nav-link:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
  .nav-link.active { color: var(--brand); font-weight: 600; }
  .nav-link.active::after {
    content: ""; position: absolute; left: 14px; right: 14px; bottom: 6px;
    height: 2px; border-radius: 2px; background: var(--accent);
  }
  .nav-cta {
    display: inline-flex; align-items: center; justify-content: center;
    height: 42px; padding: 0 20px; border-radius: var(--radius-btn);
    background: var(--brand); color: #fff; font-size: 14.5px; font-weight: 600;
    transition: background .2s ease, transform .15s ease, box-shadow .2s ease;
    box-shadow: 0 6px 16px rgba(15, 140, 126, .22);
  }
  .nav-cta:hover { background: var(--brand-deep); box-shadow: 0 10px 22px rgba(11, 79, 74, .22); }
  .nav-cta:active { transform: scale(.98); }
  .nav-cta:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

  .menu-toggle {
    display: none; align-items: center; justify-content: center;
    width: 42px; height: 42px; border-radius: 10px;
    border: 1px solid var(--line); background: #fff; color: var(--brand-deep);
    cursor: pointer; transition: background .2s ease, border-color .2s ease;
  }
  .menu-toggle:hover { background: var(--brand-pale); border-color: var(--brand-light); }
  .menu-toggle:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

  @media (max-width: 1023px) {
    .menu-toggle { display: inline-flex; }
    .nav-cta { display: none; }
    .nav-links {
      display: none;
      position: absolute; top: calc(100% + 10px); right: 0;
      width: min(280px, calc(100vw - 32px));
      flex-direction: column; align-items: stretch; gap: 4px;
      background: #fff; border: 1px solid var(--line);
      border-radius: 16px; box-shadow: var(--shadow-lg);
      padding: 10px; z-index: 60;
    }
    .nav-links.is-open { display: flex; }
    .nav-link { height: 44px; justify-content: flex-start; padding: 0 14px; }
    .nav-link.active { background: var(--brand-pale); }
    .nav-link.active::after { display: none; }
  }

  /* ============ 通用按钮 / 标签 ============ */
  .btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    height: 46px; padding: 0 22px; border-radius: var(--radius-btn);
    font-size: 15px; font-weight: 600; border: 1px solid transparent;
    cursor: pointer; white-space: nowrap;
    transition: background .2s ease, color .2s ease, border-color .2s ease, box-shadow .2s ease, transform .15s ease;
  }
  .btn:active { transform: scale(.98); }
  .btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
  .btn-accent { background: var(--accent); color: #fff; box-shadow: 0 10px 22px rgba(255, 122, 69, .26); }
  .btn-accent:hover { background: #F2672E; box-shadow: 0 14px 28px rgba(255, 122, 69, .3); }
  .btn-outline { background: #fff; color: var(--brand-deep); border-color: var(--line); }
  .btn-outline:hover { background: var(--brand-light); border-color: var(--brand); }
  .btn-ghost { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .5); }
  .btn-ghost:hover { background: rgba(255, 255, 255, .14); border-color: #fff; }

  .badge {
    display: inline-flex; align-items: center; height: 26px; padding: 0 12px;
    border-radius: 999px; background: var(--brand-light); color: var(--brand-deep);
    font-size: 12px; font-weight: 600; letter-spacing: .04em;
  }
  .eyebrow {
    display: inline-block; font-size: 12px; font-weight: 700;
    letter-spacing: .16em; color: var(--brand); margin-bottom: 12px;
  }

  /* ============ 板块骨架 ============ */
  .section { padding: var(--pad-y) 0; }
  .section-paper { background: var(--paper); }
  .section-warm { background: var(--paper-warm); }
  .section-tint { background: var(--brand-pale); }
  .section-head { max-width: 720px; margin-bottom: 32px; }
  .section-head h2 {
    font-size: clamp(22px, 2.8vw, 30px); line-height: 1.35;
    font-weight: 700; letter-spacing: -.01em;
  }
  .section-sub { margin-top: 12px; font-size: 15.5px; line-height: 1.85; color: var(--ink-soft); }

  /* ============ 页头 Banner ============ */
  .page-hero {
    position: relative; overflow: hidden;
    background: linear-gradient(155deg, #F2FAF8 0%, #FFFFFF 56%, #EDF8F4 100%);
    border-bottom: 1px solid var(--line);
  }
  .hero-scales {
    position: absolute; right: -40px; bottom: -70px;
    width: 320px; height: 320px; pointer-events: none; opacity: .16;
    background-image: radial-gradient(circle, rgba(15, 140, 126, .55) 1.5px, transparent 1.6px);
    background-size: 16px 16px;
  }
  .hero-inner { position: relative; padding: 40px 0 48px; }
  @media (min-width: 768px) { .hero-inner { padding: 52px 0 60px; } }
  .breadcrumb {
    display: flex; align-items: center; flex-wrap: wrap; gap: 8px;
    font-size: 13px; color: var(--ink-soft); margin-bottom: 16px;
  }
  .breadcrumb a { transition: color .2s ease; }
  .breadcrumb a:hover { color: var(--brand); }
  .breadcrumb a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
  .breadcrumb .sep { color: #B9CFCA; }
  .breadcrumb .current { color: var(--ink-soft); }
  .page-hero h1 {
    font-size: clamp(26px, 3.4vw, 38px); line-height: 1.3;
    font-weight: 800; letter-spacing: -.02em;
    margin-top: 14px; max-width: 880px;
  }
  .hero-lead {
    max-width: 720px; margin-top: 14px;
    font-size: 16px; line-height: 1.9; color: var(--ink-soft);
  }

  /* ============ 要点网格 ============ */
  .point-grid { display: grid; gap: 16px; grid-template-columns: 1fr; }
  @media (min-width: 640px) { .point-grid { grid-template-columns: repeat(2, 1fr); } }
  @media (min-width: 1024px) { .point-grid { grid-template-columns: repeat(3, 1fr); gap: 20px; } }
  .point-card {
    position: relative; overflow: hidden;
    background: var(--paper); border: 1px solid var(--line);
    border-radius: var(--radius-card);
    padding: 24px 22px 24px;
    box-shadow: var(--shadow-sm);
    transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  }
  .point-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: #C9E7E0;
  }
  .point-card::after {
    content: ""; position: absolute; top: -16px; right: -16px;
    width: 96px; height: 96px; pointer-events: none;
    background-image: radial-gradient(circle, rgba(15, 140, 126, .55) 1.4px, transparent 1.5px);
    background-size: 13px 13px; opacity: .14;
  }
  .point-index {
    display: inline-flex; align-items: center; justify-content: center;
    min-width: 36px; height: 26px; padding: 0 10px;
    border-radius: 999px; background: var(--brand-light); color: var(--brand-deep);
    font-size: 12.5px; font-weight: 700; letter-spacing: .06em;
  }
  .point-card h3 { margin-top: 14px; font-size: 17.5px; font-weight: 700; line-height: 1.45; }
  .point-card p { margin-top: 8px; font-size: 14.5px; line-height: 1.8; color: var(--ink-soft); }

  /* ============ 流程区 ============ */
  .split { display: grid; gap: 32px; grid-template-columns: 1fr; }
  @media (min-width: 1024px) {
    .split { grid-template-columns: 5fr 7fr; gap: 56px; align-items: start; }
  }
  .split-title { font-size: clamp(22px, 2.6vw, 28px); line-height: 1.4; font-weight: 700; }
  .split-text { margin-top: 14px; font-size: 15.5px; line-height: 1.9; color: var(--ink-soft); }
  .check-list { margin-top: 22px; display: grid; gap: 12px; }
  .check-list li { position: relative; padding-left: 26px; font-size: 15px; line-height: 1.8; }
  .check-list li::before {
    content: ""; position: absolute; left: 2px; top: 8px;
    width: 11px; height: 6px;
    border-left: 2px solid var(--brand); border-bottom: 2px solid var(--brand);
    transform: rotate(-45deg);
  }
  .step-list { display: grid; gap: 14px; }
  .step-item {
    display: flex; gap: 16px; align-items: flex-start;
    background: var(--paper); border: 1px solid var(--line);
    border-radius: var(--radius-card); padding: 20px;
    box-shadow: var(--shadow-sm);
    transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
  }
  .step-item:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); border-color: #C9E7E0; }
  .step-num {
    flex: none; width: 42px; height: 42px; border-radius: 12px;
    background: var(--brand-deep); color: #fff;
    display: grid; place-items: center;
    font-size: 15px; font-weight: 700;
  }
  .step-item h3 { font-size: 16.5px; font-weight: 700; line-height: 1.5; }
  .step-item p { margin-top: 6px; font-size: 14.5px; line-height: 1.8; color: var(--ink-soft); }

  /* ============ 图文区 ============ */
  .feature-row { display: grid; gap: 28px; grid-template-columns: 1fr; align-items: center; }
  @media (min-width: 1024px) { .feature-row { grid-template-columns: 6fr 6fr; gap: 56px; } }
  .feature-media {
    margin: 0; border-radius: var(--radius-card); overflow: hidden;
    border: 1px solid var(--line); box-shadow: var(--shadow-sm);
    background: var(--brand-light);
  }
  .feature-media img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
  .feature-body h2 { font-size: clamp(22px, 2.6vw, 28px); line-height: 1.4; font-weight: 700; }
  .feature-body p { margin-top: 14px; font-size: 15.5px; line-height: 1.9; color: var(--ink-soft); }
  .dot-list { margin-top: 22px; display: grid; gap: 10px; }
  .dot-list li { position: relative; padding-left: 18px; font-size: 15px; line-height: 1.8; }
  .dot-list li::before {
    content: ""; position: absolute; left: 0; top: 11px;
    width: 7px; height: 7px; border-radius: 50%; background: var(--brand);
  }

  /* ============ 数据带 ============ */
  .stats-band { background: var(--brand-deep); color: #fff; padding: 44px 0; }
  .stats-inner { display: grid; gap: 24px; grid-template-columns: 1fr; }
  @media (min-width: 768px) { .stats-inner { grid-template-columns: repeat(3, 1fr); gap: 32px; } }
  .stat { position: relative; padding-left: 18px; }
  .stat::before {
    content: ""; position: absolute; left: 0; top: 6px; bottom: 6px;
    width: 3px; border-radius: 2px; background: var(--accent);
  }
  .stat-num { font-size: 34px; font-weight: 800; letter-spacing: -.02em; line-height: 1; }
  .stat-unit { font-size: 14px; font-weight: 600; color: #9EDCD2; margin-left: 4px; }
  .stat-label { display: block; margin-top: 8px; font-size: 14px; line-height: 1.7; color: #BFE7E0; }

  /* ============ CTA ============ */
  .cta-band { padding: var(--pad-y) 0; background: var(--paper-warm); }
  .cta-card {
    position: relative; overflow: hidden;
    background: var(--brand-deep);
    border-radius: 20px;
    padding: 40px 24px;
    display: grid; gap: 24px;
  }
  @media (min-width: 768px) {
    .cta-card { padding: 52px 44px; grid-template-columns: 1fr auto; align-items: center; gap: 32px; }
  }
  .cta-card h2 { color: #fff; font-size: clamp(22px, 2.6vw, 28px); line-height: 1.4; font-weight: 700; }
  .cta-card p { margin-top: 12px; color: #BFE7E0; font-size: 15px; line-height: 1.85; max-width: 620px; }
  .cta-actions { display: flex; flex-wrap: wrap; gap: 12px; }
  .cta-wave {
    position: absolute; left: 0; right: 0; bottom: -1px;
    width: 100%; height: 60px; opacity: .1; pointer-events: none;
  }

  /* ============ 页脚 ============ */
  .site-footer {
    position: relative; overflow: hidden;
    background: var(--brand-deep); color: #CFEDE8;
    padding-top: 56px;
  }
  .footer-scales {
    position: absolute; top: -40px; right: -60px;
    width: 280px; height: 280px; pointer-events: none; opacity: .07;
    background-image: radial-gradient(circle, rgba(255, 255, 255, .9) 1.5px, transparent 1.6px);
    background-size: 16px 16px;
  }
  .footer-top {
    display: grid; gap: 32px; grid-template-columns: 1fr;
    padding-bottom: 40px; position: relative;
  }
  @media (min-width: 640px) { .footer-top { grid-template-columns: repeat(2, 1fr); } }
  @media (min-width: 1024px) { .footer-top { grid-template-columns: 1.4fr 1fr 1fr 1.3fr; gap: 40px; } }
  .footer-brand { display: flex; align-items: center; gap: 10px; }
  .footer-brand .logo-mark {
    width: 38px; height: 38px; border-radius: 12px;
    background: rgba(255, 255, 255, .12); color: #9EE0D5;
    display: grid; place-items: center;
  }
  .footer-brand .logo-name { font-size: 17px; font-weight: 700; color: #fff; }
  .footer-brand .logo-sub { color: #8FCFC4; }
  .footer-about { margin-top: 16px; font-size: 14px; line-height: 1.9; color: #A8DCD3; max-width: 36ch; }
  .footer-title { font-size: 14px; font-weight: 600; color: #7FD3C6; margin-bottom: 14px; }
  .footer-links { display: grid; gap: 10px; }
  .footer-links a {
    font-size: 14px; color: #CFEDE8;
    transition: color .2s ease;
    text-underline-offset: 3px;
  }
  .footer-links a:hover { color: #fff; text-decoration: underline; }
  .footer-links a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
  .footer-contact { display: grid; gap: 10px; font-size: 13.5px; line-height: 1.85; color: #A8DCD3; }
  .footer-contact strong { color: #CFEDE8; font-weight: 600; }
  .footer-bottom {
    position: relative;
    padding: 20px 0 28px;
    border-top: 1px solid rgba(207, 237, 232, .18);
    display: flex; flex-wrap: wrap; gap: 10px;
    justify-content: space-between;
    font-size: 13px; color: #8FCFC4;
  }
  @media (max-width: 639px) {
    .footer-title { border-top: 1px solid rgba(207, 237, 232, .16); padding-top: 14px; }
  }

  @media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
      transition: color .01ms linear, background-color .01ms linear, border-color .01ms linear !important;
      transform: none !important;
      animation: none !important;
    }
  }

/* roulang page: category3 */
:root{
    --brand-deep:#0B4F4A;
    --brand:#0F8C7E;
    --brand-light:#E7F5F2;
    --brand-mist:#F2FAF8;
    --accent:#FF7A45;
    --ink:#10211F;
    --ink-soft:#55706B;
    --line:#E1EDEA;
    --paper:#FFFFFF;
    --paper-warm:#F6FBF9;
    --radius-card:16px;
    --radius-btn:12px;
    --shadow-soft:0 6px 20px rgba(11,79,74,.07);
    --shadow-lift:0 14px 32px rgba(11,79,74,.14);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
    background:var(--paper-warm);
    color:var(--ink);
    font-size:16px;
    line-height:1.7;
    -webkit-font-smoothing:antialiased;
  }
  a{color:inherit;text-decoration:none;}
  img{display:block;max-width:100%;}
  button,input{font:inherit;color:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  p{margin:0;}
  :focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}
  .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 16px;}
  @media (min-width:768px){.container{padding:0 24px;}}
  @media (min-width:1024px){.container{padding:0 32px;}}

  /* 顶部信息条 */
  .topbar{background:var(--brand-deep);color:#CFEDE8;font-size:12.5px;line-height:1.5;}
  .topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px;}
  .topbar-left{display:flex;align-items:center;gap:10px;flex-wrap:wrap;min-width:0;}
  .topbar-sep{width:1px;height:12px;background:rgba(207,237,232,.4);flex:none;}
  .topbar-right{display:flex;align-items:center;gap:12px;flex:none;}
  .topbar-link{color:#CFEDE8;border-bottom:1px solid transparent;transition:color .2s,border-color .2s;}
  .topbar-link:hover{color:#fff;border-bottom-color:rgba(255,255,255,.65);}
  .topbar-btn{display:inline-flex;align-items:center;border:1px solid rgba(207,237,232,.45);border-radius:999px;padding:3px 12px;font-size:12px;color:#EAF8F5;transition:background .2s;}
  .topbar-btn:hover{background:rgba(255,255,255,.14);}
  .topbar-hide{display:none;}
  @media (min-width:768px){.topbar-hide{display:inline;}}

  /* 主导航 */
  .site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);}
  .header-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:68px;}
  .logo{display:flex;align-items:center;gap:10px;flex:none;}
  .logo-mark{width:38px;height:38px;border-radius:11px;background:var(--brand-light);color:var(--brand-deep);display:grid;place-items:center;flex:none;}
  .logo-text{display:block;line-height:1.25;}
  .logo-name{display:block;font-size:17px;font-weight:700;letter-spacing:.2px;color:var(--ink);}
  .logo-sub{display:block;font-size:11px;color:var(--ink-soft);letter-spacing:.6px;}
  .header-nav{display:none;position:absolute;left:0;right:0;top:calc(100% + 8px);background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-lift);padding:10px;z-index:60;}
  .header-nav.open{display:block;}
  .nav-links{display:flex;flex-direction:column;align-items:stretch;gap:2px;}
  .nav-link{position:relative;display:flex;align-items:center;min-height:44px;padding:0 14px;font-size:15px;color:var(--ink-soft);border-radius:10px;transition:color .2s,background .2s;}
  .nav-link:hover{color:var(--brand-deep);background:var(--brand-light);}
  .nav-link.active{color:var(--brand-deep);font-weight:600;background:var(--brand-light);}
  .nav-link.active::after{content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;background:var(--accent);border-radius:0 3px 3px 0;}
  .nav-toggle{display:inline-flex;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;padding:0 11px;border:1px solid var(--line);border-radius:12px;background:#fff;cursor:pointer;transition:border-color .2s,background .2s;}
  .nav-toggle span{display:block;height:2px;background:var(--brand-deep);border-radius:2px;transition:transform .2s,opacity .2s;}
  .nav-toggle:hover{border-color:var(--brand);background:var(--brand-light);}
  .nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
  .nav-toggle.is-open span:nth-child(2){opacity:0;}
  .nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
  .header-cta{display:none;}
  @media (min-width:1024px){
    .nav-toggle{display:none;}
    .header-nav{display:block;position:static;border:none;box-shadow:none;padding:0;background:transparent;border-radius:0;}
    .nav-links{flex-direction:row;align-items:center;gap:4px;}
    .nav-link{min-height:auto;padding:8px 12px;font-size:15px;border-radius:10px;}
    .nav-link.active{background:transparent;}
    .nav-link.active::after{left:12px;right:12px;top:auto;bottom:2px;width:auto;height:2px;border-radius:2px;}
    .header-cta{display:inline-flex;}
  }

  /* 按钮 */
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:background .2s,color .2s,border-color .2s,box-shadow .2s,transform .2s;}
  .btn:active{transform:scale(.98);}
  .btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(255,122,69,.28);}
  .btn-primary:hover{background:#F06A34;box-shadow:0 10px 24px rgba(255,122,69,.36);}
  .btn-solid{background:var(--brand);color:#fff;}
  .btn-solid:hover{background:var(--brand-deep);}
  .btn-outline{background:#fff;color:var(--brand-deep);border-color:var(--line);}
  .btn-outline:hover{background:var(--brand-light);border-color:var(--brand);}
  .btn-ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5);}
  .btn-ghost-light:hover{background:rgba(255,255,255,.14);border-color:#fff;}
  .btn-sm{height:38px;padding:0 16px;font-size:13.5px;border-radius:10px;}
  .btn:disabled{opacity:.45;cursor:not-allowed;}

  /* 通用排版 */
  .section{padding:56px 0;}
  @media (min-width:768px){.section{padding:80px 0;}}
  @media (min-width:1024px){.section{padding:104px 0;}}
  .section-alt{background:var(--brand-mist);}
  .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--brand-deep);background:var(--brand-light);border-radius:999px;padding:5px 14px;}
  .h1{font-size:clamp(28px,4vw,42px);line-height:1.22;font-weight:800;letter-spacing:-.01em;margin:16px 0 0;}
  .h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;font-weight:700;margin:0;}
  .h3{font-size:18px;line-height:1.45;font-weight:600;margin:0;}
  .lead{color:var(--ink-soft);font-size:16px;line-height:1.85;margin-top:14px;max-width:58ch;}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:32px;}
  .section-head p{color:var(--ink-soft);font-size:15px;margin-top:10px;max-width:62ch;}
  .link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);transition:color .2s;}
  .link-more:hover{color:var(--accent);}
  .tag{display:inline-flex;align-items:center;font-size:12.5px;font-weight:600;padding:3px 10px;border-radius:999px;background:var(--brand-light);color:var(--brand-deep);}

  /* 面包屑 */
  .crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-soft);padding-top:20px;}
  .crumbs a{transition:color .2s;}
  .crumbs a:hover{color:var(--brand);}
  .crumbs .sep{color:#A9C6C0;}
  .crumbs .current{color:var(--ink-soft);}

  /* Hero */
  .page-hero{position:relative;overflow:hidden;background:linear-gradient(158deg,var(--paper-warm) 0%,#FFFFFF 62%);padding-bottom:8px;}
  .scales-deco{position:absolute;pointer-events:none;background-image:radial-gradient(circle at 7px 7px,rgba(11,79,74,.6) 1.6px,transparent 1.7px);background-size:20px 20px;opacity:.05;}
  .hero-scales{right:-40px;bottom:-20px;width:340px;height:260px;}
  .hero-split{display:grid;grid-template-columns:1fr;gap:36px;align-items:center;padding:28px 0 48px;}
  @media (min-width:1024px){
    .hero-split{grid-template-columns:7fr 5fr;gap:48px;padding:36px 0 64px;}
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
  .metrics{display:flex;flex-wrap:wrap;margin-top:30px;}
  .metric{padding:0 20px;border-left:1px solid var(--line);}
  .metric:first-child{padding-left:0;border-left:none;}
  .metric b{display:block;font-size:24px;font-weight:700;line-height:1.2;color:var(--brand-deep);font-variant-numeric:tabular-nums;}
  .metric span{font-size:13px;color:var(--ink-soft);}
  .hero-media{position:relative;border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-lift);}
  .hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
  .media-chip{position:absolute;left:16px;bottom:16px;background:#fff;border-radius:12px;padding:11px 16px;box-shadow:var(--shadow-soft);font-size:12.5px;color:var(--ink-soft);}
  .media-chip strong{display:block;font-size:20px;font-weight:800;color:var(--brand-deep);font-variant-numeric:tabular-nums;line-height:1.2;}

  /* 价格卡 */
  .plan-grid{display:grid;grid-template-columns:1fr;gap:20px;}
  @media (min-width:768px){.plan-grid{grid-template-columns:repeat(2,1fr);}}
  @media (min-width:1024px){.plan-grid{grid-template-columns:repeat(3,1fr);}}
  .plan{position:relative;display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:28px 24px;box-shadow:var(--shadow-soft);transition:box-shadow .2s,transform .2s,border-color .2s;}
  .plan:hover{box-shadow:var(--shadow-lift);transform:translateY(-2px);border-color:var(--brand-light);}
  .plan-featured{background:var(--brand-deep);border-color:transparent;color:#fff;}
  .plan-featured:hover{border-color:transparent;}
  .plan-flag{position:absolute;top:-13px;right:20px;background:var(--accent);color:#fff;font-size:12px;font-weight:700;padding:4px 12px;border-radius:999px;box-shadow:0 6px 16px rgba(255,122,69,.35);}
  .plan-name{font-size:17px;font-weight:700;margin:0;}
  .plan-desc{font-size:13.5px;color:var(--ink-soft);margin-top:6px;}
  .plan-featured .plan-desc{color:#B9E4DC;}
  .plan-price{margin-top:16px;font-size:36px;font-weight:800;line-height:1.1;color:var(--brand-deep);font-variant-numeric:tabular-nums;}
  .plan-featured .plan-price{color:#fff;}
  .plan-price small{font-size:14px;font-weight:500;color:var(--ink-soft);margin-left:4px;}
  .plan-featured .plan-price small{color:#B9E4DC;}
  .plan-feats{display:grid;gap:11px;margin-top:20px;font-size:14.5px;}
  .plan-feats li{display:flex;gap:9px;align-items:flex-start;line-height:1.6;}
  .plan-feats li::before{content:"";width:16px;height:16px;flex:none;margin-top:5px;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='none' stroke='%230F8C7E' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 10.5l4 4 8-8'/%3E%3C/svg%3E") center/contain no-repeat;}
  .plan-featured .plan-feats li::before{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='none' stroke='%23A9E3D8' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 10.5l4 4 8-8'/%3E%3C/svg%3E");}
  .plan .btn{margin-top:24px;width:100%;}
  .plan-custom{margin-top:20px;display:grid;grid-template-columns:1fr;gap:18px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:26px 24px;box-shadow:var(--shadow-soft);}
  @media (min-width:1024px){.plan-custom{grid-template-columns:1fr auto;padding:28px 32px;}}

  /* 逐项对照 */
  .compare-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:var(--radius-card);}
  .compare{min-width:660px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-soft);}
  .compare-row{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;border-bottom:1px solid var(--line);}
  .compare-row:last-child{border-bottom:none;}
  .compare-cell{padding:15px 18px;border-left:1px solid var(--line);font-size:14.5px;}
  .compare-cell:first-child{border-left:none;color:var(--ink-soft);}
  .compare-head{background:var(--brand-light);}
  .compare-head .compare-cell{font-weight:700;color:var(--brand-deep);font-size:14px;}
  .compare-row:hover:not(.compare-head){background:var(--paper-warm);}
  .cell-strong{font-weight:600;color:var(--brand-deep);}

  /* 问答 */
  .qa-layout{display:grid;grid-template-columns:1fr;gap:32px;}
  @media (min-width:1024px){.qa-layout{grid-template-columns:5fr 7fr;gap:48px;align-items:start;}}
  .qa-side{display:flex;flex-direction:column;gap:22px;}
  @media (min-width:1024px){.qa-side{position:sticky;top:96px;}}
  .qa-side-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-soft);}
  .qa-side-card h3{font-size:15.5px;font-weight:700;margin:0 0 8px;}
  .qa-side-card p{font-size:14px;color:var(--ink-soft);line-height:1.8;}
  .qa-side-media{border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-soft);}
  .qa-side-media img{width:100%;aspect-ratio:16/9;object-fit:cover;}
  .qa-list{display:grid;gap:14px;}
  .qa-item{display:grid;grid-template-columns:auto 1fr;gap:14px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:20px 22px;box-shadow:var(--shadow-soft);transition:border-color .2s,box-shadow .2s;}
  .qa-item:hover{border-color:var(--brand-light);box-shadow:var(--shadow-lift);}
  .qa-num{width:34px;height:34px;display:grid;place-items:center;border-radius:10px;background:var(--brand-light);color:var(--brand-deep);font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;}
  .qa-q{font-size:16.5px;font-weight:700;margin:0;line-height:1.5;}
  .qa-a{margin-top:8px;font-size:15px;line-height:1.85;color:var(--ink-soft);}
  .qa-a strong{color:var(--brand-deep);font-weight:600;}

  /* 相关分类卡 */
  .rel-grid{display:grid;grid-template-columns:1fr;gap:16px;}
  @media (min-width:768px){.rel-grid{grid-template-columns:repeat(3,1fr);}}
  .rel-card{display:flex;align-items:center;justify-content:space-between;gap:14px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 20px;box-shadow:var(--shadow-soft);transition:border-color .2s,background .2s,transform .2s,box-shadow .2s;}
  .rel-card:hover{border-color:var(--brand);background:var(--brand-light);transform:translateY(-2px);box-shadow:var(--shadow-lift);}
  .rel-card strong{display:block;font-size:15.5px;font-weight:700;color:var(--ink);}
  .rel-card span{display:block;font-size:13px;color:var(--ink-soft);margin-top:2px;}
  .rel-arrow{flex:none;color:var(--accent);transition:transform .2s;}
  .rel-card:hover .rel-arrow{transform:translateX(4px);}

  /* CTA */
  .cta-band{position:relative;overflow:hidden;background:var(--brand-deep);border-radius:20px;padding:40px 24px;color:#fff;}
  @media (min-width:768px){.cta-band{padding:52px 44px;}}
  .cta-scales{position:absolute;right:-30px;top:-40px;width:300px;height:240px;pointer-events:none;background-image:radial-gradient(circle at 7px 7px,rgba(127,211,198,.7) 1.7px,transparent 1.8px);background-size:20px 20px;opacity:.12;}
  .cta-inner{position:relative;max-width:660px;}
  .cta-inner h2{font-size:clamp(22px,2.6vw,30px);line-height:1.32;font-weight:700;margin:0;}
  .cta-inner p{margin-top:12px;font-size:15px;line-height:1.85;color:#B9E4DC;}
  .cta-form{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
  .cta-form input{flex:1 1 240px;height:48px;border-radius:12px;border:1px solid rgba(255,255,255,.28);background:rgba(255,255,255,.96);padding:0 16px;font-size:15px;color:var(--ink);transition:border-color .2s,box-shadow .2s;}
  .cta-form input::placeholder{color:#8AA8A3;}
  .cta-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,140,126,.3);}
  .form-tip{margin-top:10px;font-size:13.5px;min-height:20px;}
  .form-tip.err{color:#FFB39B;}
  .form-tip.ok{color:#9CE3D3;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}

  /* 页脚 */
  .site-footer{position:relative;overflow:hidden;background:#0B4F4A;color:#CFEDE8;padding:56px 0 24px;margin-top:0;}
  .footer-scales{position:absolute;top:0;left:0;right:0;height:140px;pointer-events:none;background-image:radial-gradient(circle at 7px 7px,rgba(127,211,198,.6) 1.7px,transparent 1.8px);background-size:20px 20px;opacity:.06;}
  .footer-top{position:relative;display:grid;grid-template-columns:1fr;gap:32px;}
  @media (min-width:768px){.footer-top{grid-template-columns:repeat(2,1fr);gap:36px;}}
  @media (min-width:1024px){.footer-top{grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;}}
  .footer-brand{display:flex;align-items:center;gap:10px;color:#fff;}
  .footer-brand .logo-mark{background:rgba(255,255,255,.12);color:#CFEDE8;}
  .footer-brand .logo-name{display:block;font-size:17px;font-weight:700;color:#fff;}
  .footer-brand .logo-sub{display:block;font-size:11px;color:#9ECFC7;letter-spacing:.6px;}
  .footer-about{margin-top:14px;font-size:14px;line-height:1.85;color:#A9D8D0;max-width:36ch;}
  .footer-title{font-size:14px;font-weight:600;color:#7FD3C6;margin-bottom:14px;}
  @media (max-width:767px){.footer-title{padding-top:18px;border-top:1px solid rgba(127,211,198,.25);}}
  .footer-links{display:grid;gap:10px;font-size:14px;}
  .footer-links a{color:#CFEDE8;width:fit-content;border-bottom:1px solid transparent;transition:color .2s,border-color .2s;}
  .footer-links a:hover{color:#fff;border-bottom-color:rgba(255,255,255,.7);}
  .footer-contact{display:grid;gap:10px;font-size:14px;color:#CFEDE8;line-height:1.75;}
  .footer-contact strong{color:#fff;font-weight:600;}
  .footer-bottom{position:relative;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;margin-top:36px;padding-top:18px;border-top:1px solid rgba(127,211,198,.22);font-size:13px;color:#9ECFC7;}

  @media (prefers-reduced-motion:reduce){
    *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
    html{scroll-behavior:auto;}
    .plan:hover,.rel-card:hover{transform:none;}
  }