/* roulang page: index */
:root{
  --primary:#0E9F8A;
  --primary-dark:#076B5C;
  --primary-light:#E6F6F2;
  --primary-border:#BFE7DF;
  --amber:#F5A524;
  --ink:#12161A;
  --text:#4E5866;
  --muted:#8A939F;
  --line:#E3E8EC;
  --bg:#F6F8F8;
  --card:#FFFFFF;
  --deep:#08201D;
  --deep-title:#EAF6F3;
  --deep-text:#A9C4BE;
  --success:#16A34A;
  --warn:#D97706;
  --error:#DC2626;
  --r-card:16px;
  --r-btn:10px;
  --r-input:10px;
  --sh-sm:0 1px 2px rgba(18,22,26,.05);
  --sh-md:0 10px 30px rgba(11,59,55,.10);
  --container:1200px;
  --nav-h:68px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:130px;-webkit-text-size-adjust:100%;}
html body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--primary-dark);text-decoration:none;transition:color .2s ease,background-color .2s ease;}
h1,h2,h3,h4{color:var(--ink);margin:0;letter-spacing:0;line-height:1.35;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
input,textarea{font-family:inherit;}
:focus-visible{outline:2px solid var(--amber);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section-head{margin-bottom:44px;}
.section-eyebrow{display:inline-block;font-size:13px;font-weight:600;color:var(--primary-dark);background:var(--primary-light);border:1px solid var(--primary-border);border-radius:999px;padding:4px 14px;margin-bottom:14px;}
.section-title{font-size:clamp(24px,2.6vw,28px);font-weight:700;color:var(--ink);}
.section-desc{margin-top:12px;font-size:16px;line-height:1.85;color:var(--text);max-width:700px;}
.section-more{font-size:15px;font-weight:600;color:var(--primary-dark);border-bottom:1px solid var(--primary-border);padding-bottom:2px;}
.section-more:hover{border-bottom-color:var(--primary-dark);}
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}

/* 顶部导航 */
.site-header{position:fixed;top:0;left:0;right:0;height:var(--nav-h);z-index:60;background:#fff;border-bottom:1px solid transparent;transition:border-color .25s ease,box-shadow .25s ease;}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 2px 14px rgba(18,22,26,.07);}
.nav-inner{max-width:var(--container);margin:0 auto;height:var(--nav-h);padding:0 24px;display:flex;align-items:center;gap:28px;}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{width:38px;height:38px;border-radius:11px;background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);display:grid;place-items:center;color:#fff;font-size:17px;}
.logo-text{display:flex;flex-direction:column;line-height:1.18;}
.logo-main{font-size:18px;font-weight:700;color:var(--ink);}
.logo-sub{font-size:11px;color:var(--muted);}
.nav-main{display:flex;align-items:center;gap:2px;margin-left:auto;}
.nav-link{position:relative;padding:8px 14px;font-size:15px;font-weight:500;color:var(--text);border-radius:8px;transition:color .2s ease,background-color .2s ease;}
.nav-link:hover{color:var(--primary-dark);background:var(--primary-light);}
.nav-link.is-active{color:var(--primary-dark);font-weight:600;}
.nav-link.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;border-radius:2px;background:var(--primary);}
.nav-cta{flex-shrink:0;}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 20px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;white-space:nowrap;transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .15s ease,box-shadow .2s ease;}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 14px rgba(14,159,138,.22);}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-outline{background:#fff;color:var(--primary-dark);border-color:var(--primary);}
.btn-outline:hover{background:var(--primary-light);color:var(--primary-dark);}
.btn-outline:active{transform:translateY(1px);}
.btn-onDark{background:rgba(255,255,255,.10);color:#fff;border-color:rgba(191,231,223,.45);}
.btn-onDark:hover{background:rgba(255,255,255,.20);color:#fff;}
.btn-lg{height:50px;padding:0 26px;font-size:16px;}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none;}

/* Hero */
.hero{position:relative;overflow:hidden;background:var(--deep);padding:calc(var(--nav-h) + 76px) 0 92px;color:var(--deep-text);}
.hero-bg{position:absolute;inset:0;}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.42;}
.hero-shade{position:absolute;inset:0;background:linear-gradient(112deg,rgba(8,32,29,.96) 0%,rgba(8,32,29,.80) 46%,rgba(7,107,92,.58) 100%);}
.hero-arc{position:absolute;width:560px;height:560px;right:-170px;top:-190px;border-radius:50%;border:1px solid rgba(191,231,223,.20);pointer-events:none;}
.hero-arc::after{content:"";position:absolute;inset:60px;border-radius:50%;border:1px solid rgba(191,231,223,.14);}
.hero-dots{position:absolute;left:-40px;bottom:-60px;width:320px;height:240px;background-image:radial-gradient(rgba(191,231,223,.32) 1.4px,transparent 1.4px);background-size:8px 8px;opacity:.55;pointer-events:none;}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.hero-eyebrow{display:inline-block;font-size:13px;font-weight:600;color:#8FE4D3;background:rgba(14,159,138,.20);border:1px solid rgba(143,228,211,.32);border-radius:999px;padding:5px 14px;margin-bottom:18px;}
.hero-title{font-size:clamp(30px,4vw,46px);font-weight:700;line-height:1.25;color:#fff;}
.hero-sub{margin-top:16px;font-size:18px;line-height:1.8;color:var(--deep-text);max-width:520px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.trust-bar{display:flex;align-items:center;flex-wrap:wrap;gap:20px;margin-top:48px;font-size:14px;color:var(--deep-text);}
.trust-bar li+li{border-left:1px solid rgba(191,231,223,.26);padding-left:20px;}
.hero-panel{background:#fff;border-radius:var(--r-card);padding:24px 24px 20px;box-shadow:0 20px 54px rgba(0,0,0,.30);color:var(--text);}
.panel-head{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:700;color:var(--primary-dark);margin-bottom:16px;}
.panel-head i{font-size:15px;}
.flow-list{display:flex;flex-direction:column;gap:14px;}
.flow-list li{display:flex;gap:12px;align-items:flex-start;}
.flow-list li>span{width:26px;height:26px;flex-shrink:0;margin-top:4px;border-radius:50%;background:var(--primary-light);color:var(--primary-dark);font-size:13px;font-weight:700;display:grid;place-items:center;}
.flow-list strong{display:block;font-size:15px;font-weight:600;color:var(--ink);}
.flow-list p{font-size:13px;line-height:1.7;color:var(--muted);}

/* 锚点条 */
.anchor-bar{position:sticky;top:var(--nav-h);z-index:45;background:#fff;border-bottom:1px solid var(--line);}
.anchor-inner{display:flex;gap:8px;overflow-x:auto;padding-top:12px;padding-bottom:12px;scrollbar-width:none;}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-link{padding:6px 15px;border-radius:999px;font-size:14px;color:var(--text);white-space:nowrap;transition:background-color .2s ease,color .2s ease;}
.anchor-link:hover{background:var(--primary-light);color:var(--primary-dark);}
.anchor-link.is-current{background:var(--primary-light);color:var(--primary-dark);font-weight:600;}

/* 卖点 */
.adv-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:24px;}
.adv-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-sm);transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;}
.adv-card:hover{box-shadow:var(--sh-md);transform:translateY(-2px);border-color:var(--primary-border);}
.adv-icon{width:44px;height:44px;border-radius:12px;background:var(--primary-light);color:var(--primary-dark);display:grid;place-items:center;font-size:19px;margin-bottom:18px;}
.adv-card h3{font-size:20px;font-weight:600;margin-bottom:10px;}
.adv-card p{font-size:15px;line-height:1.8;color:var(--text);}
.adv-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.tag{display:inline-block;font-size:12px;font-weight:600;color:var(--primary-dark);background:var(--primary-light);border-radius:8px;padding:4px 10px;}

/* 演示 */
.demo-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.demo-figure{border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-md);background:var(--primary-light);}
.demo-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.timeline{position:relative;padding-left:38px;}
.timeline::before{content:"";position:absolute;left:13px;top:10px;bottom:10px;width:2px;background:var(--primary-border);border-radius:2px;}
.timeline li{position:relative;padding-bottom:26px;}
.timeline li:last-child{padding-bottom:0;}
.timeline li::before{content:"";position:absolute;left:-30px;top:8px;width:12px;height:12px;border-radius:50%;background:#fff;border:3px solid var(--primary);}
.timeline h3{font-size:18px;font-weight:600;margin-bottom:6px;}
.timeline p{font-size:15px;line-height:1.8;color:var(--text);}

/* 证据区 */
.section-deep{background:var(--deep);color:var(--deep-text);position:relative;overflow:hidden;}
.section-deep::after{content:"";position:absolute;right:-120px;bottom:-160px;width:420px;height:420px;border-radius:50%;border:1px solid rgba(191,231,223,.14);pointer-events:none;}
.section-deep .section-title{color:var(--deep-title);}
.section-deep .section-desc{color:var(--deep-text);}
.section-deep .section-eyebrow{background:rgba(14,159,138,.18);border-color:rgba(143,228,211,.28);color:#8FE4D3;}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;z-index:2;}
.stat-num{font-size:clamp(26px,3vw,34px);font-weight:700;color:#fff;line-height:1.2;}
.stat-label{margin-top:8px;font-size:14px;color:var(--deep-text);}
.tag-wall{display:flex;flex-wrap:wrap;gap:12px;margin-top:48px;position:relative;z-index:2;}
.tag-wall span{border:1px solid rgba(191,231,223,.26);border-radius:8px;padding:8px 15px;font-size:14px;color:var(--deep-title);transition:border-color .2s ease,color .2s ease;}
.tag-wall span:hover{border-color:#8FE4D3;color:#8FE4D3;}
.deep-line{height:1px;background:rgba(191,231,223,.16);margin:48px 0 0;}

/* 方案 */
.plan-grid{display:grid;grid-template-columns:repeat(2,1fr) .88fr;gap:24px;align-items:stretch;}
.plan-card{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:28px;display:flex;flex-direction:column;box-shadow:var(--sh-sm);transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;}
.plan-card:hover{box-shadow:var(--sh-md);transform:translateY(-2px);}
.plan-card.is-featured{border-color:var(--primary);box-shadow:var(--sh-md);}
.plan-ribbon{position:absolute;top:-1px;right:22px;background:var(--amber);color:#3A2503;font-size:12px;font-weight:700;border-radius:0 0 8px 8px;padding:4px 12px;}
.plan-name{font-size:18px;font-weight:700;color:var(--ink);}
.plan-note{margin-top:6px;font-size:13px;color:var(--muted);}
.plan-body{margin-top:20px;font-size:15px;line-height:1.8;color:var(--text);}
.plan-list{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
.plan-list li{display:flex;gap:9px;font-size:14px;line-height:1.7;color:var(--text);}
.plan-list i{color:var(--primary);font-size:13px;margin-top:6px;}
.plan-foot{margin-top:24px;padding-top:20px;border-top:1px solid var(--line);}
.plan-side{background:var(--primary-light);border:1px solid var(--primary-border);border-radius:var(--r-card);padding:28px;display:flex;flex-direction:column;gap:14px;}
.plan-side h3{font-size:17px;font-weight:700;color:var(--primary-dark);}
.plan-side p{font-size:14px;line-height:1.8;color:#2C5A52;}
.side-divider{height:1px;background:rgba(14,159,138,.22);}

/* 资讯列表 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-sm);transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;}
.news-card:hover{box-shadow:var(--sh-md);transform:translateY(-2px);border-color:var(--primary-border);}
.news-card__link{display:block;color:inherit;}
.news-card__media{aspect-ratio:16/9;overflow:hidden;background:var(--primary-light);}
.news-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease;}
.news-card:hover .news-card__media img{transform:scale(1.04);}
.news-card__body{padding:20px 22px 22px;}
.badge{display:inline-block;font-size:12px;font-weight:600;color:var(--primary-dark);background:var(--primary-light);border:1px solid var(--primary-border);border-radius:999px;padding:3px 11px;}
.news-card__title{margin-top:12px;font-size:17px;font-weight:600;line-height:1.55;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card__desc{margin-top:10px;font-size:14px;line-height:1.8;color:var(--muted);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-card__meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:16px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);}
.news-card__meta .arrow{color:var(--primary);font-weight:700;transition:transform .25s ease;}
.news-card:hover .news-card__meta .arrow{transform:translateX(4px);}
.empty-state{border:1px dashed var(--primary-border);border-radius:var(--r-card);min-height:200px;background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;text-align:center;padding:36px 24px;}
.empty-state i{font-size:26px;color:var(--primary);}
.empty-state p{font-size:15px;color:var(--muted);}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:960px;}
.faq-item{background:#fff;border:1px solid var(--line);border-left:3px solid transparent;border-radius:12px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;}
.faq-item:hover{border-color:var(--primary-border);border-left-color:var(--primary-border);}
.faq-item.is-open{border-color:var(--primary-border);border-left-color:var(--primary);box-shadow:var(--sh-sm);}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;background:none;border:0;text-align:left;font-size:17px;font-weight:600;color:var(--ink);cursor:pointer;}
.faq-icon{position:relative;width:16px;height:16px;flex-shrink:0;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--primary-dark);border-radius:2px;transition:transform .25s ease,opacity .25s ease;}
.faq-icon::before{left:0;top:7px;width:16px;height:2px;}
.faq-icon::after{left:7px;top:0;width:2px;height:16px;}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-a{display:none;padding:0 22px 20px;font-size:15px;line-height:1.9;color:var(--muted);}
.faq-item.is-open .faq-a{display:block;}

/* 底部 CTA */
.cta-band{position:relative;border-radius:var(--r-card);overflow:hidden;min-height:260px;display:flex;align-items:center;}
.cta-band__bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.cta-band__shade{position:absolute;inset:0;background:linear-gradient(100deg,rgba(8,32,29,.95) 0%,rgba(8,32,29,.80) 50%,rgba(7,107,92,.62) 100%);}
.cta-band__content{position:relative;z-index:2;padding:52px 48px;max-width:720px;color:var(--deep-text);}
.cta-band__content h2{font-size:clamp(22px,2.6vw,28px);color:#fff;font-weight:700;}
.cta-band__content p{margin-top:14px;font-size:16px;line-height:1.85;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}

/* 页脚 */
.site-footer{background:var(--deep);border-top:3px solid var(--amber);padding:64px 0 28px;color:var(--deep-text);}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-mark{width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));display:grid;place-items:center;color:#fff;font-size:16px;}
.footer-name{font-size:17px;font-weight:700;color:var(--deep-title);}
.footer-brand-note{font-size:14px;line-height:1.85;color:var(--deep-text);max-width:340px;}
.footer-title{font-size:14px;font-weight:600;color:var(--deep-title);margin-bottom:16px;}
.footer-link{display:block;font-size:14px;color:var(--deep-text);padding:5px 0;transition:color .2s ease;}
.footer-link:hover{color:#8FE4D3;}
.footer-info{font-size:14px;line-height:1.9;color:var(--deep-text);}
.footer-info strong{display:block;color:var(--deep-title);font-weight:600;margin-bottom:4px;}
.footer-bottom{margin-top:48px;padding-top:22px;border-top:1px solid rgba(191,231,223,.16);display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:12px;color:#7C948F;}

/* 浮动 CTA */
.float-cta{position:fixed;right:32px;bottom:32px;z-index:55;height:48px;padding:0 22px;border-radius:999px;background:var(--primary);color:#fff;font-size:15px;font-weight:600;display:inline-flex;align-items:center;gap:8px;box-shadow:0 12px 28px rgba(11,59,55,.28);opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity .3s ease,transform .3s ease,visibility .3s ease,background-color .2s ease;}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{background:var(--primary-dark);color:#fff;}

/* 移动端底部 Tab */
.tabbar{position:fixed;left:0;right:0;bottom:0;z-index:70;height:60px;display:none;background:#fff;border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom);}
.tab-item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;font-size:11px;color:var(--muted);position:relative;transition:color .2s ease;}
.tab-item i{font-size:22px;line-height:1;}
.tab-item.is-active{color:var(--primary-dark);}
.tab-item.is-active::before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:28px;height:2px;border-radius:2px;background:var(--primary);}

/* 响应式 */
@media (max-width:1279px){
  .hero-grid{gap:40px;}
}
@media (max-width:1023px){
  .section{padding:64px 0;}
  .nav-main,.nav-cta{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero{padding:calc(var(--nav-h) + 52px) 0 64px;}
  .hero-sub{max-width:none;}
  .adv-grid{grid-template-columns:1fr;}
  .demo-grid{grid-template-columns:1fr;gap:36px;}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:28px;}
  .plan-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .tabbar{display:flex;}
  html body{padding-bottom:calc(60px + env(safe-area-inset-bottom));}
  .float-cta{right:16px;left:16px;bottom:calc(72px + env(safe-area-inset-bottom));width:auto;justify-content:center;border-radius:12px;}
  .cta-band__content{padding:40px 28px;}
}
@media (max-width:639px){
  .container{padding:0 16px;}
  .nav-inner{padding:0 16px;gap:12px;}
  .section{padding:48px 0;}
  .hero-title{font-size:clamp(26px,7vw,32px);}
  .hero-sub{font-size:16px;}
  .hero-actions .btn{width:100%;}
  .trust-bar{gap:12px;font-size:13px;}
  .trust-bar li+li{padding-left:12px;}
  .news-grid{grid-template-columns:1fr;}
  .stat-grid{grid-template-columns:1fr 1fr;gap:22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .adv-card,.plan-card,.plan-side{padding:22px;}
  .faq-q{font-size:16px;padding:16px 18px;}
  .faq-a{padding:0 18px 18px;}
  .footer-bottom{flex-direction:column;gap:6px;}
}

/* roulang page: article */
:root{
  --c-primary:#0E9F8A;
  --c-primary-deep:#076B5C;
  --c-primary-soft:#E6F6F2;
  --c-primary-line:#BFE7DF;
  --c-amber:#F5A524;
  --c-ink:#12161A;
  --c-text:#4E5866;
  --c-muted:#8A939F;
  --c-line:#E3E8EC;
  --c-bg:#F6F8F8;
  --c-card:#FFFFFF;
  --c-dark:#08201D;
  --c-dark-title:#EAF6F3;
  --c-dark-text:#A9C4BE;
  --c-success:#16A34A;
  --c-warn:#D97706;
  --c-error:#DC2626;
  --r-card:16px;
  --r-btn:10px;
  --r-tag:8px;
  --sh-card:0 1px 2px rgba(18,22,26,.05);
  --sh-hover:0 10px 30px rgba(11,59,55,.10);
  --font: "PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC","Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;line-height:1.35;letter-spacing:0;}
p{margin:0;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-primary-deep);}
img{max-width:100%;display:block;}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus{outline:none;}
:focus-visible{outline:2px solid var(--c-amber);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.container-narrow{max-width:1140px;}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.96);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{border-bottom-color:#0B3B371A;box-shadow:0 6px 20px rgba(11,59,55,.08);}
.nav-inner{
  max-width:1200px;margin:0 auto;padding:0 24px;height:68px;
  display:flex;align-items:center;gap:28px;
}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--c-ink);}
.logo-mark{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--c-primary),#12B69C);color:#fff;font-size:17px;
  box-shadow:0 4px 12px rgba(14,159,138,.28);
}
.logo-text{display:flex;flex-direction:column;line-height:1.2;}
.logo-main{font-size:18px;font-weight:700;color:var(--c-ink);letter-spacing:0;}
.logo-sub{font-size:11px;color:var(--c-muted);letter-spacing:0;}
.nav-main{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  position:relative;padding:9px 14px;border-radius:9px;font-size:15px;font-weight:600;
  color:var(--c-text);transition:background .2s ease,color .2s ease;
}
.nav-link:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);}
.nav-link.is-active{color:var(--c-primary-deep);background:var(--c-primary-soft);}
.nav-link.is-active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:18px;height:2px;border-radius:2px;background:var(--c-amber);
}
.nav-cta{margin-left:10px;flex:0 0 auto;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  transition:background .2s ease,color .2s ease,transform .15s ease,box-shadow .2s ease;
}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 16px rgba(14,159,138,.22);}
.btn-primary:hover{background:var(--c-primary-deep);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:#fff;color:var(--c-primary-deep);border-color:var(--c-primary-line);}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);transform:translateY(-1px);}
.btn-light{background:#fff;color:var(--c-primary-deep);}
.btn-light:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);}
.btn-link{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-weight:600;}
.btn-link .fa-arrow-right{transition:transform .2s ease;}
.btn-link:hover .fa-arrow-right{transform:translateX(4px);}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none;}

/* 面包屑 */
.breadcrumb-bar{background:#fff;border-bottom:1px solid var(--c-line);}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:nowrap;overflow:hidden;
  padding:14px 0;font-size:14px;color:var(--c-muted);
}
.breadcrumb a{color:var(--c-muted);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:#CBD3D9;}
.breadcrumb .current{
  color:var(--c-primary);font-weight:600;max-width:46ch;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}

/* 文章头部 */
.article-head{
  position:relative;overflow:hidden;background:#fff;
  border-bottom:1px solid var(--c-line);
  padding:52px 0 44px;
}
.article-head::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(14,159,138,.16) 1px,transparent 1px);
  background-size:8px 8px;opacity:.5;pointer-events:none;
  -webkit-mask-image:linear-gradient(90deg,#000 0%,transparent 62%);
  mask-image:linear-gradient(90deg,#000 0%,transparent 62%);
}
.article-head-inner{position:relative;max-width:820px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 12px;
  border-radius:999px;background:var(--c-primary-soft);color:var(--c-primary-deep);
  font-size:13px;font-weight:600;margin-bottom:16px;
}
.eyebrow i{font-size:12px;color:var(--c-amber);}
.article-h1{
  font-size:clamp(26px,3.2vw,36px);font-weight:700;line-height:1.35;color:var(--c-ink);
}
.article-lead{margin-top:14px;font-size:16px;color:var(--c-text);line-height:1.9;}
.article-meta{
  display:flex;align-items:center;gap:18px;flex-wrap:wrap;
  margin-top:22px;padding-top:18px;border-top:1px dashed var(--c-line);
  font-size:13px;color:var(--c-muted);
}
.article-meta .item{display:inline-flex;align-items:center;gap:7px;}
.article-meta .item i{color:var(--c-primary);}
.article-meta .tag{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;
  background:var(--c-primary-soft);color:var(--c-primary-deep);font-weight:600;font-size:12px;
}

/* 正文布局 */
.article-wrap{padding:48px 0 72px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:48px;align-items:start;}
.article-card{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:36px 40px;
}
.article-content{max-width:800px;font-size:17px;line-height:1.9;color:var(--c-text);}
.article-content > * + *{margin-top:1.2em;}
.article-content h2{
  font-size:26px;font-weight:700;color:var(--c-ink);line-height:1.4;
  margin-top:2em;padding-left:14px;position:relative;
}
.article-content h2::before{
  content:"";position:absolute;left:0;top:.32em;width:4px;height:1.05em;
  border-radius:3px;background:var(--c-primary);
}
.article-content h3{font-size:20px;font-weight:600;color:var(--c-ink);margin-top:1.6em;}
.article-content p{line-height:1.9;}
.article-content a{color:var(--c-primary);font-weight:600;text-decoration:underline;text-underline-offset:3px;}
.article-content a:hover{color:var(--c-primary-deep);}
.article-content ul,.article-content ol{padding-left:1.35em;}
.article-content li + li{margin-top:.5em;}
.article-content strong{color:var(--c-ink);}
.article-content blockquote{
  margin:1.6em 0;padding:16px 20px;border-left:3px solid var(--c-primary);
  background:var(--c-primary-soft);border-radius:0 12px 12px 0;color:var(--c-primary-deep);
}
.article-content blockquote p{margin:0;}
.article-content img{border-radius:12px;margin:1.6em auto;height:auto;}
.article-content table{
  width:100%;border-collapse:collapse;font-size:15px;display:block;overflow-x:auto;
  border:1px solid var(--c-line);border-radius:12px;
}
.article-content th,.article-content td{padding:12px 14px;border-bottom:1px solid var(--c-line);text-align:left;}
.article-content th{background:var(--c-primary-soft);color:var(--c-ink);font-weight:600;}
.article-content code{
  background:#F1F5F4;padding:2px 6px;border-radius:6px;font-size:15px;color:var(--c-primary-deep);
}
.article-content hr{border:0;border-top:1px solid var(--c-line);margin:2em 0;}

/* 空态 */
.empty-state{
  min-height:200px;border:1px dashed var(--c-primary-line);border-radius:var(--r-card);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  padding:36px 24px;text-align:center;background:#FBFDFC;
}
.empty-state .ico{
  width:48px;height:48px;border-radius:14px;display:grid;place-items:center;
  background:var(--c-primary-soft);color:var(--c-primary);font-size:19px;
}
.empty-state p{font-size:15px;color:var(--c-muted);}

/* 侧栏 */
.side{position:sticky;top:92px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:22px;
}
.side-title{
  font-size:14px;font-weight:600;color:var(--c-ink);display:flex;align-items:center;gap:8px;
  margin-bottom:14px;
}
.side-title i{color:var(--c-primary);font-size:13px;}
.toc{list-style:none;padding:0;margin:0;border-left:2px solid var(--c-line);}
.toc li{margin:0;}
.toc a{
  display:block;padding:7px 0 7px 14px;margin-left:-2px;border-left:2px solid transparent;
  font-size:14px;color:var(--c-text);line-height:1.6;
}
.toc a:hover{color:var(--c-primary-deep);border-left-color:var(--c-primary-line);background:#FAFDFC;}
.toc a.is-current{color:var(--c-primary-deep);border-left-color:var(--c-primary);font-weight:600;}
.toc-note{font-size:13px;color:var(--c-muted);line-height:1.7;}
.side-cta{
  background:var(--c-dark);border-radius:var(--r-card);padding:24px;color:var(--c-dark-text);
}
.side-cta h4{color:var(--c-dark-title);font-size:17px;font-weight:700;}
.side-cta p{margin:10px 0 18px;font-size:14px;line-height:1.8;color:var(--c-dark-text);}
.side-cta .btn{width:100%;}
.side-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px;}
.side-list a{display:flex;gap:10px;font-size:14px;color:var(--c-text);line-height:1.7;}
.side-list a:hover{color:var(--c-primary-deep);}
.side-list .dot{
  flex:0 0 6px;width:6px;height:6px;border-radius:50%;background:var(--c-primary);margin-top:9px;
}

/* 通用板块 */
.section{padding:64px 0;}
.section-head{max-width:720px;margin-bottom:32px;}
.section-head h2{font-size:28px;font-weight:700;}
.section-head p{margin-top:12px;font-size:16px;color:var(--c-text);}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 10px;border-radius:999px;
  background:var(--c-primary-soft);color:var(--c-primary-deep);font-size:12px;font-weight:600;
}
.badge-amber{background:#FEF3DD;color:#A96A00;}

/* 相关推荐 */
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.rel-card{
  display:flex;flex-direction:column;background:var(--c-card);border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:var(--c-primary-line);}
.rel-thumb{position:relative;aspect-ratio:16/9;background:var(--c-primary-soft);overflow:hidden;}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.rel-card:hover .rel-thumb img{transform:scale(1.04);}
.rel-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rel-body h3{font-size:17px;font-weight:600;line-height:1.6;}
.rel-body p{font-size:14px;line-height:1.8;color:var(--c-muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rel-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--c-muted);padding-top:12px;border-top:1px solid var(--c-line);
}
.rel-foot i{transition:transform .2s ease;color:var(--c-primary);}
.rel-card:hover .rel-foot i{transform:translateX(4px);}

/* 返回栏目长条 */
.back-strip{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  background:var(--c-primary-soft);border:1px solid var(--c-primary-line);
  border-radius:var(--r-card);padding:24px 28px;
}
.back-strip h3{font-size:19px;font-weight:700;}
.back-strip p{margin-top:6px;font-size:14px;color:var(--c-text);}

/* 页脚 */
.site-footer{position:relative;background:var(--c-dark);color:var(--c-dark-text);margin-top:20px;}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--c-amber);
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;
  padding:60px 0 36px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:rgba(14,159,138,.9);color:#fff;font-size:15px;
}
.footer-name{font-size:17px;font-weight:700;color:var(--c-dark-title);}
.footer-brand-note{font-size:14px;line-height:1.9;color:var(--c-dark-text);max-width:34ch;}
.footer-title{font-size:14px;font-weight:600;color:var(--c-dark-title);margin-bottom:14px;}
.footer-link{display:block;font-size:14px;color:var(--c-dark-text);padding:5px 0;}
.footer-link:hover{color:#fff;}
.footer-info{font-size:14px;line-height:1.8;color:var(--c-dark-text);}
.footer-info strong{display:block;color:var(--c-dark-title);font-weight:600;font-size:13px;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  border-top:1px solid rgba(169,196,190,.22);padding:20px 0 28px;font-size:12px;color:#7E9A94;
}

/* 移动端底部 Tab */
.mobile-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;
  background:rgba(255,255,255,.98);border-top:1px solid var(--c-line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -4px 18px rgba(11,59,55,.06);
}
.mobile-tab-inner{display:grid;grid-template-columns:repeat(5,1fr);height:60px;}
.tab-item{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:3px;font-size:11px;color:var(--c-muted);font-weight:600;
}
.tab-item i{font-size:22px;line-height:1;}
.tab-item.is-active{color:var(--c-primary);}
.tab-item.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;border-radius:2px;background:var(--c-amber);
}
.page-bottom-space{display:none;}

@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,1fr) 260px;gap:34px;}
}
@media (max-width:1023px){
  .nav-main{display:none;}
  .nav-cta{display:none;}
  .nav-inner{height:62px;padding:0 16px;justify-content:space-between;}
  .mobile-tab{display:block;}
  .page-bottom-space{display:block;height:76px;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:28px;}
  .side{position:static;}
  .article-card{padding:26px 22px;}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:48px 0 28px;}
  .section{padding:56px 0;}
}
@media (max-width:639px){
  .container{padding:0 16px;}
  .article-h1{font-size:26px;}
  .article-content{font-size:17px;}
  .article-content h2{font-size:22px;}
  .article-content h3{font-size:18px;}
  .rel-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:1fr;}
  .back-strip{padding:20px;flex-direction:column;align-items:flex-start;}
  .breadcrumb .current{max-width:22ch;}
  .section{padding:48px 0;}
}

/* roulang page: category1 */
:root{
  --primary:#0E9F8A;
  --primary-dark:#076B5C;
  --primary-light:#E6F6F2;
  --primary-border:#BFE7DF;
  --accent:#F5A524;
  --ink:#12161A;
  --text:#4E5866;
  --muted:#8A939F;
  --line:#E3E8EC;
  --bg:#F6F8F8;
  --card:#FFFFFF;
  --dark:#08201D;
  --dark-title:#EAF6F3;
  --dark-text:#A9C4BE;
  --success:#16A34A;
  --warn:#D97706;
  --error:#DC2626;
  --r-card:16px;
  --r-btn:10px;
  --r-input:10px;
  --r-tag:8px;
  --sh-1:0 1px 2px rgba(18,22,26,.05);
  --sh-2:0 10px 30px rgba(11,59,55,.10);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC","Inter",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:0}
p{margin:0}
img{max-width:100%;display:block;border-radius:12px}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
body .container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* header */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 2px 14px rgba(18,22,26,.07)}
.nav-inner{max-width:1200px;margin:0 auto;padding:0 24px;height:68px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{width:38px;height:38px;border-radius:12px;background:var(--primary);color:#fff;display:grid;place-items:center;font-size:18px;flex:0 0 auto}
.logo-text{display:flex;flex-direction:column;line-height:1.25}
.logo-main{font-size:18px;font-weight:700;color:var(--ink)}
.logo-sub{font-size:11px;color:var(--muted);letter-spacing:0}
.nav-main{display:flex;align-items:center;gap:4px}
.nav-link{padding:8px 14px;border-radius:8px;font-size:15px;font-weight:500;color:var(--text);transition:background .2s,color .2s}
.nav-link:hover{background:var(--primary-light);color:var(--primary-dark)}
.nav-link.is-active{background:var(--primary-light);color:var(--primary-dark);font-weight:600}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;font-size:15px;font-weight:600;cursor:pointer;transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease}
.btn:active{transform:translateY(1px)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 8px 20px rgba(11,59,55,.16)}
.btn-ghost{background:#fff;border-color:var(--primary);color:var(--primary-dark)}
.btn-ghost:hover{background:var(--primary-light);transform:translateY(-1px)}
.btn-light{background:#fff;color:var(--primary-dark)}
.btn-light:hover{background:var(--primary-light);transform:translateY(-1px)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.6);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.12)}
.btn-text{height:auto;padding:0;color:var(--primary-dark);font-weight:600;border:0;background:none}
.btn-text:hover{color:var(--primary)}

/* banner */
.page-banner{position:relative;overflow:hidden;background-image:linear-gradient(105deg,rgba(8,32,29,.86),rgba(7,107,92,.62)),url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;padding:56px 0 48px}
.page-banner::after{content:"";position:absolute;right:-80px;top:-60px;width:320px;height:320px;border-radius:50%;background:rgba(14,159,138,.22);pointer-events:none}
.banner-inner{position:relative;z-index:1;max-width:800px}
.crumb{display:flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.72);margin-bottom:16px;flex-wrap:wrap}
.crumb a:hover{color:#fff}
.crumb .sep{opacity:.55}
.crumb .current{color:#7FE3D2}
.banner-badge{display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:999px;background:rgba(245,165,36,.16);border:1px solid rgba(245,165,36,.5);color:#FFD79A;font-size:13px;font-weight:600;margin-bottom:16px}
.page-banner h1{font-size:clamp(30px,4vw,46px);line-height:1.25;color:#fff;margin-bottom:14px}
.banner-desc{font-size:16px;line-height:1.85;color:rgba(234,246,243,.86);max-width:660px}
.banner-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.banner-tags span{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-tag);background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);color:#EAF6F3;font-size:13px}

/* layout */
.doc-layout{display:grid;grid-template-columns:minmax(0,1fr) 288px;gap:48px;padding:64px 0 72px;align-items:start}
.content-flow{min-width:0}
.lead-box{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:24px 26px;box-shadow:var(--sh-1);margin-bottom:40px}
.lead-box p{font-size:16px;line-height:1.9;color:var(--text)}
.lead-box p + p{margin-top:12px}

.section-block{margin-bottom:56px}
.section-head{margin-bottom:26px}
.eyebrow{display:inline-block;font-size:13px;font-weight:600;color:var(--primary-dark);background:var(--primary-light);border-radius:999px;padding:4px 12px;margin-bottom:12px}
.section-head h2{font-size:28px;line-height:1.35;margin-bottom:10px}
.section-head p{font-size:15px;color:var(--muted);max-width:640px}

/* steps timeline */
.steps{position:relative;padding-left:52px}
.steps::before{content:"";position:absolute;left:17px;top:10px;bottom:26px;width:2px;background:linear-gradient(180deg,var(--primary),var(--primary-border) 70%,rgba(191,231,223,0))}
.step{position:relative;padding-bottom:34px}
.step:last-child{padding-bottom:0}
.step-num{position:absolute;left:-52px;top:2px;width:36px;height:36px;border-radius:50%;background:#fff;border:2px solid var(--primary);color:var(--primary-dark);display:grid;place-items:center;font-size:14px;font-weight:700;box-shadow:0 0 0 4px var(--bg)}
.step h3{font-size:19px;font-weight:600;margin-bottom:8px;line-height:1.45}
.step p{font-size:15px;line-height:1.85;color:var(--text)}
.step-tips{margin-top:12px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 18px}
.step-tips li{position:relative;padding-left:18px;font-size:14px;line-height:1.8;color:var(--text)}
.step-tips li + li{margin-top:6px}
.step-tips li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--primary)}

/* feature rows */
.feature-row{display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-1);margin-bottom:24px;transition:box-shadow .25s ease,transform .25s ease}
.feature-row:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.feature-row.reverse .feature-media{order:-1}
.feature-media{position:relative;overflow:hidden;border-radius:14px;background:var(--primary-light)}
.feature-media img{width:100%;height:100%;aspect-ratio:4/3;object-fit:cover}
.feature-media .shot-tag{position:absolute;left:12px;bottom:12px;background:rgba(8,32,29,.78);color:#EAF6F3;font-size:12px;padding:4px 10px;border-radius:999px}
.feature-text h3{font-size:20px;font-weight:600;margin-bottom:10px;line-height:1.45}
.feature-text p{font-size:15px;line-height:1.85}
.feature-list{margin-top:14px}
.feature-list li{display:flex;gap:10px;font-size:14px;line-height:1.8;color:var(--text)}
.feature-list li + li{margin-top:8px}
.feature-list i{color:var(--primary);font-size:13px;margin-top:7px}

/* notice card */
.notice-card{display:grid;grid-template-columns:auto 1fr;gap:18px;background:#FFF9EE;border:1px solid #F6E2BC;border-left:4px solid var(--accent);border-radius:14px;padding:22px 24px}
.notice-card .notice-icon{width:40px;height:40px;border-radius:12px;background:rgba(245,165,36,.18);color:#B87708;display:grid;place-items:center;font-size:18px}
.notice-card h3{font-size:18px;font-weight:600;margin-bottom:8px}
.notice-card li{font-size:14px;line-height:1.85;color:#6B5A34}
.notice-card li + li{margin-top:6px}

/* toc */
.side-col{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.toc{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-1)}
.toc-title{font-size:13px;font-weight:600;color:var(--muted);margin-bottom:12px}
.toc a{display:block;font-size:14px;color:var(--text);padding:7px 10px;border-radius:8px;border-left:2px solid transparent;transition:.2s}
.toc a:hover{background:var(--primary-light);color:var(--primary-dark);border-left-color:var(--primary)}
.side-cta{background:var(--dark);border-radius:var(--r-card);padding:22px;color:var(--dark-text)}
.side-cta h4{color:var(--dark-title);font-size:17px;font-weight:600;margin-bottom:8px}
.side-cta p{font-size:14px;line-height:1.8;color:var(--dark-text);margin-bottom:16px}
.side-cta .btn{width:100%}

/* faq */
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:box-shadow .2s ease}
.faq-item[open]{border-left:3px solid var(--primary);box-shadow:var(--sh-2)}
.faq-item summary{list-style:none;cursor:pointer;padding:18px 22px;font-size:17px;font-weight:600;color:var(--ink);display:flex;align-items:center;justify-content:space-between;gap:16px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .sign{flex:0 0 auto;width:22px;height:22px;border-radius:50%;background:var(--primary-light);color:var(--primary-dark);display:grid;place-items:center;font-size:14px;line-height:1;font-weight:600}
.faq-item[open] summary .sign{background:var(--primary);color:#fff}
.faq-item .faq-answer{padding:0 22px 20px;font-size:15px;line-height:1.9;color:var(--muted)}

/* cta bar */
.cta-bar{display:flex;align-items:center;justify-content:space-between;gap:28px;background:linear-gradient(115deg,#0E9F8A,#076B5C);border-radius:var(--r-card);padding:32px 36px;position:relative;overflow:hidden}
.cta-bar::after{content:"";position:absolute;right:-60px;bottom:-70px;width:240px;height:240px;border-radius:50%;background:rgba(255,255,255,.09);pointer-events:none}
.cta-bar h2{color:#fff;font-size:24px;line-height:1.4;margin-bottom:8px}
.cta-bar p{color:rgba(255,255,255,.86);font-size:15px;max-width:660px}
.cta-actions{display:flex;gap:12px;flex:0 0 auto;position:relative;z-index:1}

/* footer */
.site-footer{margin-top:8px;background:var(--dark);border-top:3px solid var(--accent);padding:56px 0 24px;color:var(--dark-text)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-mark{width:34px;height:34px;border-radius:11px;background:var(--primary);color:#fff;display:grid;place-items:center;font-size:16px}
.footer-name{color:var(--dark-title);font-size:17px;font-weight:700}
.footer-brand-note{font-size:14px;line-height:1.85;color:var(--dark-text);max-width:340px}
.footer-title{font-size:14px;font-weight:600;color:#CFE7E2;margin-bottom:14px}
.footer-link{display:block;font-size:14px;color:var(--dark-text);padding:4px 0;transition:color .2s,transform .2s}
.footer-link:hover{color:#fff;transform:translateX(3px)}
.footer-info{font-size:14px;line-height:1.8;color:var(--dark-text)}
.footer-info strong{display:block;color:#CFE7E2;font-weight:600;margin-bottom:2px}
.footer-bottom{margin-top:36px;padding-top:18px;border-top:1px solid rgba(255,255,255,.1);display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:12px;color:rgba(169,196,190,.72)}

/* float cta */
.float-cta{position:fixed;right:32px;bottom:32px;z-index:70;height:48px;padding:0 24px;border-radius:999px;background:var(--primary);color:#fff;font-size:15px;font-weight:600;display:inline-flex;align-items:center;gap:8px;box-shadow:0 12px 26px rgba(11,59,55,.24);opacity:0;visibility:hidden;transform:translateY(12px);transition:.28s ease}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta:hover{background:var(--primary-dark)}

/* mobile tab */
.tabbar{display:none}
@media (max-width:1023px){
  .nav-main{display:none}
  .tabbar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:75;
    height:calc(60px + env(safe-area-inset-bottom));
    padding-bottom:env(safe-area-inset-bottom);
    background:rgba(255,255,255,.98);border-top:1px solid var(--line);
    backdrop-filter:blur(8px);
  }
  .tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;font-size:11px;color:var(--muted);position:relative;transition:color .2s}
  .tabbar a i{font-size:22px;line-height:1}
  .tabbar a.is-active{color:var(--primary-dark)}
  .tabbar a.is-active::before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:28px;height:2px;background:var(--primary);border-radius:2px}
  .float-cta{right:16px;left:16px;bottom:calc(72px + env(safe-area-inset-bottom));width:auto;justify-content:center;border-radius:12px}
  .doc-layout{grid-template-columns:minmax(0,1fr);gap:32px;padding:48px 0 56px}
  .side-col{position:static}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  body{padding-bottom:calc(60px + env(safe-area-inset-bottom))}
  .site-footer{padding-bottom:32px}
}
@media (max-width:767px){
  body .container{padding:0 16px}
  .nav-inner{padding:0 16px;height:64px}
  .logo-sub{display:none}
  .nav-cta{padding:0 12px;font-size:13px}
  .page-banner{padding:40px 0 34px}
  .banner-desc{font-size:15px}
  .section-head h2{font-size:24px}
  .lead-box{padding:20px}
  .feature-row{grid-template-columns:1fr;gap:22px;padding:20px}
  .feature-row.reverse .feature-media{order:0}
  .feature-text h3{font-size:18px}
  .steps{padding-left:44px}
  .step-num{left:-44px;width:32px;height:32px;font-size:13px}
  .steps::before{left:15px}
  .notice-card{grid-template-columns:1fr;gap:12px}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:26px 22px}
  .cta-actions{width:100%;flex-direction:column}
  .cta-actions .btn{width:100%}
  .faq-item summary{font-size:16px;padding:16px 18px}
  .faq-item .faq-answer{padding:0 18px 18px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .site-footer{padding-top:40px}
}

/* roulang page: category2 */
:root{
  --primary:#0E9F8A;
  --primary-dark:#076B5C;
  --primary-soft:#E6F6F2;
  --primary-line:#BFE7DF;
  --amber:#F5A524;
  --ink:#12161A;
  --text:#4E5866;
  --muted:#8A939F;
  --line:#E3E8EC;
  --bg:#F6F8F8;
  --card:#FFFFFF;
  --deep:#08201D;
  --deep-title:#EAF6F3;
  --deep-text:#A9C4BE;
  --success:#16A34A;
  --warning:#D97706;
  --danger:#DC2626;
  --radius-card:16px;
  --radius-btn:10px;
  --shadow-card:0 1px 2px rgba(18,22,26,.05);
  --shadow-hover:0 10px 30px rgba(11,59,55,.10);
  --font-cn:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",Inter,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;}
p{margin:0 0 1.2em;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:0;}
ul{margin:0;padding:0;list-style:none;}
strong{color:var(--ink);}
button{font:inherit;cursor:pointer;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section-soft{background:#FFFFFF;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--primary-dark);
  background:var(--primary-soft);border:1px solid var(--primary-line);
  border-radius:999px;padding:5px 14px;margin-bottom:16px;
}
.section-title{font-size:28px;line-height:1.35;}
.section-desc{margin-top:14px;font-size:16px;color:var(--text);}
.hr-line{height:1px;background:var(--line);border:0;margin:0;}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 18px rgba(8,32,29,.06);}
.nav-inner{
  max-width:1200px;margin:0 auto;padding:0 24px;height:68px;
  display:flex;align-items:center;gap:24px;
}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;}
.logo-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 34px;
  background:linear-gradient(135deg,var(--primary),#0B7A68);
  color:#fff;display:grid;place-items:center;font-size:15px;
}
.logo-main{display:block;font-size:18px;font-weight:700;color:var(--ink);line-height:1.25;}
.logo-sub{display:block;font-size:11px;color:var(--muted);line-height:1.4;}
.nav-main{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;padding:8px 14px;border-radius:8px;
  font-size:15px;color:var(--text);text-decoration:none;
  transition:color .2s ease,background-color .2s ease;
}
.nav-link:hover{color:var(--primary-dark);background:var(--primary-soft);}
.nav-link.is-active{color:var(--primary-dark);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--primary);border-radius:2px;
}
.nav-cta{flex:0 0 auto;}
.nav-cta-mobile{
  display:none;margin-left:auto;width:40px;height:40px;border-radius:10px;
  background:var(--primary);color:#fff;place-items:center;font-size:16px;text-decoration:none;
}

/* 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;text-decoration:none;border:1px solid transparent;
  transition:background-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 1px 2px rgba(11,59,55,.18);}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:#fff;border-color:var(--primary);color:var(--primary-dark);}
.btn-ghost:hover{background:var(--primary-soft);transform:translateY(-1px);}
.btn-light{background:#fff;color:var(--primary-dark);}
.btn-light:hover{background:var(--primary-soft);transform:translateY(-1px);}
.btn-outline-light{background:transparent;border-color:rgba(234,246,243,.5);color:var(--deep-title);}
.btn-outline-light:hover{background:rgba(234,246,243,.12);transform:translateY(-1px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn:focus-visible,a:focus-visible,summary:focus-visible,button:focus-visible{
  outline:2px solid var(--amber);outline-offset:2px;
}

/* 页头 */
.page-hero{
  position:relative;
  min-height:248px;
  display:flex;align-items:center;
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(8,32,29,.90) 0%,rgba(8,32,29,.74) 45%,rgba(7,107,92,.62) 100%);
}
.page-hero::after{
  content:"";position:absolute;right:-40px;top:-60px;width:320px;height:320px;
  border-radius:50%;background:radial-gradient(circle,rgba(14,159,138,.42),transparent 68%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;padding-top:52px;padding-bottom:52px;color:#fff;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(234,246,243,.72);margin-bottom:16px;}
.breadcrumb a{color:rgba(234,246,243,.78);text-decoration:none;}
.breadcrumb a:hover{color:#fff;text-decoration:underline;}
.breadcrumb .sep{color:rgba(234,246,243,.45);}
.breadcrumb .current{color:#EAF6F3;font-weight:600;}
.page-hero h1{
  color:#fff;font-size:clamp(30px,4vw,44px);line-height:1.25;font-weight:700;
}
.page-hero p{
  margin:14px 0 0;max-width:640px;color:#D6EAE5;font-size:16px;line-height:1.8;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px;}
.hero-tag{
  font-size:13px;color:#EAF6F3;border:1px solid rgba(191,231,223,.42);
  background:rgba(255,255,255,.08);border-radius:999px;padding:5px 13px;
}

/* 场景标签条 */
.chip-bar{
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;
  padding:18px 0 0;
}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;color:var(--primary-dark);background:var(--primary-soft);
  border:1px solid var(--primary-line);border-radius:8px;padding:6px 12px;
  text-decoration:none;transition:background-color .2s ease,transform .2s ease;
}
.chip:hover{background:#D6EFE9;transform:translateY(-1px);}
.chip.is-plain{background:#fff;border-color:var(--line);color:var(--text);}

/* 大图卡网格 */
.scene-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:32px;}
.scene-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);text-decoration:none;display:block;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--primary-line);}
.scene-media{position:relative;aspect-ratio:4/3;overflow:hidden;background:#E9EEEE;}
.scene-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease;}
.scene-card:hover .scene-media img{transform:scale(1.04);}
.scene-body{padding:22px 24px 24px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;color:var(--primary-dark);
  background:var(--primary-soft);border:1px solid var(--primary-line);
  border-radius:999px;padding:4px 11px;
}
.badge-amber{color:#8A5A06;background:#FEF3DC;border-color:#F7DCA6;}
.scene-body h3{font-size:20px;font-weight:600;margin:14px 0 8px;line-height:1.45;}
.scene-body p{margin:0;font-size:15px;line-height:1.8;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-foot{
  display:flex;align-items:center;justify-content:space-between;
  margin-top:18px;padding-top:16px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);
}
.card-foot .go{color:var(--primary-dark);font-weight:600;display:inline-flex;align-items:center;gap:6px;transition:gap .2s ease;}
.scene-card:hover .card-foot .go{gap:10px;}

/* 图文亮点 */
.feature-row{
  display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);
  gap:48px;align-items:center;
}
.feature-row + .feature-row{margin-top:72px;}
.feature-row.is-reverse .feature-media{order:2;}
.feature-media{
  border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-card);background:#E9EEEE;
}
.feature-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.feature-copy h2{font-size:28px;line-height:1.35;}
.feature-copy .lead{margin-top:14px;font-size:16px;color:var(--text);}
.point-list{margin-top:22px;display:grid;gap:14px;}
.point-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;line-height:1.8;}
.point-list i{color:var(--primary);font-size:15px;line-height:1.8;flex:0 0 auto;}

/* 路径步骤 */
.steps{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin-top:36px;
}
.step{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:24px 22px;box-shadow:var(--shadow-card);transition:transform .25s ease,box-shadow .25s ease;
}
.step:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.step-num{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:var(--primary-soft);color:var(--primary-dark);font-weight:700;font-size:15px;
  border:1px solid var(--primary-line);margin-bottom:14px;
}
.step h3{font-size:18px;font-weight:600;margin-bottom:8px;}
.step p{margin:0;font-size:15px;line-height:1.8;color:var(--text);}
.step::after{
  content:"";position:absolute;top:40px;right:-11px;width:12px;height:2px;background:var(--primary-line);
}
.step:last-child::after{display:none;}

/* 场景对照 */
.compare-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:32px;}
.compare-card{
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px;
  box-shadow:var(--shadow-card);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.compare-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--primary-line);}
.compare-card h3{font-size:18px;font-weight:600;margin:12px 0 10px;}
.compare-card ul{display:grid;gap:8px;}
.compare-card li{position:relative;padding-left:16px;font-size:15px;line-height:1.8;}
.compare-card li::before{
  content:"";position:absolute;left:0;top:12px;width:6px;height:6px;border-radius:50%;background:var(--primary);
}

/* FAQ */
.faq-wrap{margin-top:32px;border:1px solid var(--line);border-radius:12px;background:#fff;overflow:hidden;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;font-size:17px;font-weight:600;color:var(--ink);
  transition:background-color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:#FAFCFC;}
.faq-item summary .mark{
  flex:0 0 auto;width:24px;height:24px;border-radius:50%;border:1px solid var(--primary-line);
  color:var(--primary-dark);display:grid;place-items:center;font-size:14px;line-height:1;transition:transform .2s ease;
}
.faq-item[open] summary .mark{transform:rotate(45deg);background:var(--primary-soft);}
.faq-item[open]{border-left:3px solid var(--primary);}
.faq-answer{padding:0 22px 22px;font-size:15px;line-height:1.9;color:var(--text);}
.faq-answer p:last-child{margin-bottom:0;}

/* 深色 CTA */
.cta-deep{
  position:relative;background-color:var(--deep);
  background-image:url(/assets/images/backpic/back-3.webp);
  background-size:cover;background-position:center;overflow:hidden;color:var(--deep-title);
}
.cta-deep::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(96deg,rgba(8,32,29,.94),rgba(8,32,29,.82));
}
.cta-deep .container{position:relative;z-index:2;padding-top:72px;padding-bottom:72px;}
.cta-deep .inner{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:40px;align-items:center;}
.cta-deep h2{color:var(--deep-title);font-size:28px;line-height:1.35;}
.cta-deep p{color:var(--deep-text);margin:14px 0 0;font-size:16px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;}
.cta-stats{display:flex;flex-wrap:wrap;gap:32px;margin-top:28px;padding-top:24px;border-top:1px solid rgba(191,231,223,.2);}
.cta-stats .num{font-size:24px;font-weight:700;color:#EAF6F3;font-family:Inter,var(--font-cn);}
.cta-stats .lbl{font-size:13px;color:var(--deep-text);}

/* 页脚 */
.site-footer{background:var(--deep);color:var(--deep-text);border-top:3px solid var(--amber);padding-top:60px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-mark{
  width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,var(--primary),#0B7A68);
  color:#fff;display:grid;place-items:center;font-size:14px;flex:0 0 32px;
}
.footer-name{font-size:17px;font-weight:700;color:var(--deep-title);}
.footer-brand-note{font-size:14px;line-height:1.9;color:var(--deep-text);margin:0;}
.footer-title{font-size:14px;font-weight:600;color:var(--deep-title);margin-bottom:16px;}
.footer-link{display:block;font-size:14px;color:var(--deep-text);text-decoration:none;padding:5px 0;transition:color .2s ease,padding-left .2s ease;}
.footer-link:hover{color:#EAF6F3;padding-left:4px;}
.footer-info{font-size:14px;line-height:1.8;color:var(--deep-text);}
.footer-info strong{display:block;color:var(--deep-title);font-size:13px;font-weight:600;margin-bottom:2px;}
.footer-bottom{
  border-top:1px solid rgba(191,231,223,.16);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12px;color:#7E9C96;
}

/* 底部 Tab */
.mobile-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;
  height:60px;padding-bottom:env(safe-area-inset-bottom);
  background:#fff;border-top:1px solid var(--line);
  box-shadow:0 -4px 16px rgba(8,32,29,.05);
}
.tab-item{
  flex:1;position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
  font-size:11px;color:var(--muted);text-decoration:none;transition:color .2s ease;
}
.tab-item i{font-size:22px;line-height:1;}
.tab-item.is-active{color:var(--primary-dark);font-weight:600;}
.tab-item.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;background:var(--primary);border-radius:0 0 2px 2px;
}

@media (max-width:1279px){
  .container{padding:0 24px;}
}
@media (max-width:1023px){
  .nav-main{display:none;}
  .nav-cta{display:none;}
  .nav-cta-mobile{display:grid;}
  .mobile-tab{display:flex;}
  body{padding-bottom:76px;}
  .section{padding:64px 0;}
  .scene-grid{gap:20px;}
  .feature-row{gap:32px;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .step::after{display:none;}
  .compare-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-deep .inner{grid-template-columns:1fr;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1.2fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .feature-row{grid-template-columns:1fr;}
  .feature-row.is-reverse .feature-media{order:0;}
}
@media (max-width:639px){
  .container{padding:0 16px;}
  .nav-inner{padding:0 16px;gap:12px;}
  .logo-main{font-size:16px;}
  .logo-sub{display:none;}
  .section{padding:48px 0;}
  .section-title{font-size:24px;}
  .page-hero{min-height:220px;}
  .page-hero .container{padding-top:40px;padding-bottom:40px;}
  .scene-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .compare-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;}
  .cta-deep .container{padding-top:52px;padding-bottom:52px;}
  .btn{width:100%;}
  .btn-sm{width:auto;}
}

/* roulang page: category3 */
:root{
  --primary:#0E9F8A;
  --primary-dark:#076B5C;
  --primary-light:#E6F6F2;
  --primary-line:#BFE7DF;
  --amber:#F5A524;
  --ink:#12161A;
  --body:#4E5866;
  --muted:#8A939F;
  --line:#E3E8EC;
  --bg:#F6F8F8;
  --card:#FFFFFF;
  --dark:#08201D;
  --dark-title:#EAF6F3;
  --dark-body:#A9C4BE;
  --ok:#16A34A;
  --radius-card:16px;
  --radius-btn:10px;
  --shadow-card:0 1px 2px rgba(18,22,26,.05);
  --shadow-hover:0 10px 30px rgba(11,59,55,.10);
  --font-cn:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  padding-top:68px;
  background:var(--bg);
  color:var(--body);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--primary-dark);text-decoration:none;transition:color .18s ease,background-color .18s ease}
a:hover{color:var(--primary)}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:0}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--amber);outline-offset:2px;border-radius:6px}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-tight{padding:56px 0}
.section-head{max-width:760px;margin-bottom:40px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--primary-dark);
  background:var(--primary-light);border:1px solid var(--primary-line);
  padding:5px 12px;border-radius:999px;margin-bottom:16px;
}
h1.page-title{font-size:clamp(30px,4vw,46px);font-weight:700;line-height:1.25}
h2.sec-title{font-size:clamp(24px,2.6vw,28px);font-weight:700;line-height:1.35;margin-bottom:12px}
h3.card-title{font-size:20px;font-weight:600;line-height:1.5}
.sec-desc{font-size:16px;line-height:1.85;color:var(--body)}
.muted{color:var(--muted);font-size:13px}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;height:68px;z-index:60;
  background:rgba(255,255,255,.95);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 2px 14px rgba(18,22,26,.07)}
.nav-inner{
  max-width:1200px;margin:0 auto;height:68px;padding:0 24px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:38px;height:38px;border-radius:12px;background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:17px;
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-main{font-size:18px;font-weight:700;color:var(--ink)}
.logo-sub{font-size:11px;color:var(--muted)}
.nav-main{display:flex;align-items:center;gap:2px}
.nav-link{
  display:inline-block;padding:8px 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--body);
}
.nav-link:hover{background:var(--primary-light);color:var(--primary-dark)}
.nav-link.is-active{background:var(--primary-light);color:var(--primary-dark);font-weight:600}
.nav-cta{flex-shrink:0}
.nav-icon-cta{
  display:none;width:40px;height:40px;border-radius:10px;
  align-items:center;justify-content:center;font-size:16px;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:14px 22px;border-radius:var(--radius-btn);
  border:1px solid transparent;transition:all .18s ease;
}
.btn-sm{padding:11px 16px;font-size:14px}
.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn-primary:hover{background:var(--primary-dark);border-color:var(--primary-dark);color:#fff;transform:translateY(-1px)}
.btn-outline{background:#fff;color:var(--primary-dark);border-color:var(--primary-line)}
.btn-outline:hover{background:var(--primary-light);color:var(--primary-dark);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--primary-dark);padding:8px 0;font-weight:600}
.btn-ghost:hover{color:var(--primary);text-decoration:underline;text-underline-offset:4px}
.btn:active{transform:translateY(1px)}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:#fff;border-bottom:1px solid var(--line)}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:14px;color:var(--muted);padding:14px 0;
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--primary-dark)}
.breadcrumb .sep{color:#C7CFD6}
.breadcrumb .current{color:var(--primary-dark);font-weight:600}

/* ---------- 窄幅头图带 ---------- */
.hero-band{position:relative;min-height:240px;display:flex;align-items:flex-end;overflow:hidden}
.hero-band-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.hero-band::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(8,32,29,.92) 0%,rgba(7,107,92,.78) 58%,rgba(14,159,138,.55) 100%);
}
.hero-band-inner{position:relative;z-index:2;padding:44px 0 40px;width:100%}
.hero-band h1{color:#fff}
.band-tag{
  display:inline-block;font-size:12px;font-weight:600;color:#08201D;
  background:var(--amber);padding:4px 10px;border-radius:999px;margin-bottom:14px;
}
.band-sub{color:#D5EDE8;font-size:16px;margin-top:12px;max-width:640px}
.band-meta{display:flex;gap:24px;flex-wrap:wrap;margin-top:22px}
.band-meta span{font-size:13px;color:#A9C4BE}
.band-meta strong{color:#EAF6F3;font-weight:600}

/* ---------- 标签页签 ---------- */
.tabs-shell{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);overflow:hidden;
}
.tab-nav{
  display:flex;gap:4px;padding:10px;border-bottom:1px solid var(--line);
  overflow-x:auto;background:#FBFDFC;scrollbar-width:none;
}
.tab-nav::-webkit-scrollbar{display:none}
.tab-btn{
  flex:0 0 auto;border:1px solid transparent;background:transparent;
  padding:10px 18px;border-radius:10px;font-size:15px;font-weight:600;color:var(--body);
  white-space:nowrap;transition:all .18s ease;
}
.tab-btn:hover{background:var(--primary-light);color:var(--primary-dark)}
.tab-btn.is-active{background:var(--primary);color:#fff;border-color:var(--primary)}
.tab-panel{display:none;padding:24px}
.tab-panel.is-active{display:block}
.panel-note{
  font-size:14px;color:var(--body);background:var(--primary-light);
  border-left:3px solid var(--primary);border-radius:0 10px 10px 0;
  padding:12px 16px;margin-bottom:20px;
}

/* ---------- FAQ 手风琴 ---------- */
.faq-list{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:#fff;border:0;border-left:3px solid transparent;
  padding:18px 20px;text-align:left;font-size:17px;font-weight:600;color:var(--ink);
  transition:background-color .18s ease,border-color .18s ease;
}
.faq-q:hover{background:#FAFCFC}
.faq-item.is-open .faq-q{border-left-color:var(--primary);background:var(--primary-light);color:var(--primary-dark)}
.faq-icon{
  flex:0 0 auto;width:24px;height:24px;border-radius:50%;
  border:1px solid var(--line);color:var(--primary-dark);
  display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600;
  transition:transform .25s ease,background-color .2s ease;
}
.faq-item.is-open .faq-icon{background:var(--primary);color:#fff;border-color:var(--primary);transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;background:#fff}
.faq-item.is-open .faq-a{max-height:520px}
.faq-a-inner{padding:2px 22px 20px 23px;font-size:15px;line-height:1.9;color:var(--body)}
.faq-a-inner p + p{margin-top:10px}
.faq-a-inner .steps{margin-top:10px}
.faq-a-inner .steps li{
  position:relative;padding-left:20px;margin-bottom:6px;font-size:15px;
}
.faq-a-inner .steps li::before{
  content:"";position:absolute;left:4px;top:11px;width:6px;height:6px;border-radius:50%;background:var(--primary);
}

/* ---------- 速查清单 ---------- */
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.check-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-card);transition:all .2s ease;
}
.check-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--primary-line)}
.check-head{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.check-ico{
  width:40px;height:40px;border-radius:12px;background:var(--primary-light);
  color:var(--primary-dark);display:flex;align-items:center;justify-content:center;font-size:16px;flex:0 0 auto;
}
.check-card h3{font-size:18px}
.check-card p{font-size:15px;line-height:1.8;color:var(--body)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.tag{
  font-size:12px;font-weight:600;color:var(--primary-dark);
  background:var(--primary-light);border:1px solid var(--primary-line);
  padding:3px 10px;border-radius:8px;
}

/* ---------- 推荐阅读列表 ---------- */
.read-list{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.read-item{
  display:grid;grid-template-columns:132px 1fr auto;gap:20px;align-items:center;
  padding:20px 0;border-bottom:1px solid var(--line);transition:background-color .18s ease;
}
.read-item:hover{background:#fff}
.read-thumb{
  width:132px;aspect-ratio:16/9;border-radius:12px;overflow:hidden;background:var(--primary-light);
}
.read-thumb img{width:100%;height:100%;object-fit:cover}
.read-body h3{font-size:18px;margin-bottom:6px}
.read-body p{font-size:15px;line-height:1.8;color:var(--body)}
.read-body .read-meta{font-size:13px;color:var(--muted);margin-top:8px}
.read-arrow{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--primary-dark);flex:0 0 auto;
  transition:all .2s ease;
}
.read-item:hover .read-arrow{background:var(--primary);border-color:var(--primary);color:#fff;transform:translateX(4px)}

/* ---------- 浅色描边 CTA ---------- */
.cta-outline{
  background:#fff;border:1px solid var(--primary-line);border-radius:var(--radius-card);
  padding:40px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  box-shadow:var(--shadow-card);
}
.cta-outline h2{font-size:clamp(22px,2.4vw,26px);margin-bottom:10px}
.cta-outline p{font-size:15px;max-width:620px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex:0 0 auto}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);border-top:3px solid var(--amber);padding:56px 0 24px;color:var(--dark-body)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-mark{
  width:34px;height:34px;border-radius:10px;background:var(--primary);
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:15px;
}
.footer-name{font-size:17px;font-weight:700;color:var(--dark-title)}
.footer-brand-note{font-size:14px;line-height:1.85;color:var(--dark-body);max-width:340px}
.footer-title{font-size:14px;font-weight:600;color:var(--dark-title);margin-bottom:14px}
.footer-link{display:block;font-size:14px;color:var(--dark-body);padding:5px 0}
.footer-link:hover{color:#fff}
.footer-info{font-size:14px;color:var(--dark-body);line-height:1.7}
.footer-info strong{display:block;color:var(--dark-title);font-weight:600;font-size:13px}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(169,196,190,.18);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:#7E9A94;
}

/* ---------- 移动端底部 Tab ---------- */
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;
  height:calc(60px + env(safe-area-inset-bottom));
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(255,255,255,.98);border-top:1px solid var(--line);
  box-shadow:0 -2px 14px rgba(18,22,26,.06);
}
.mobile-tabbar-inner{display:flex;height:60px}
.tabbar-item{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--muted);position:relative;
}
.tabbar-item i{font-size:22px;line-height:1}
.tabbar-item.is-active{color:var(--primary-dark)}
.tabbar-item.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:28px;height:2px;background:var(--primary);border-radius:0 0 2px 2px;
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .nav-main{display:none}
  .nav-cta{display:none}
  .nav-icon-cta{display:inline-flex}
  .mobile-tabbar{display:block}
  body{padding-bottom:calc(60px + env(safe-area-inset-bottom))}
  .section{padding:64px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:900px){
  .cta-outline{flex-direction:column;align-items:flex-start;padding:32px}
  .check-grid{grid-template-columns:1fr}
  .read-item{grid-template-columns:104px 1fr;gap:16px}
  .read-thumb{width:104px}
  .read-arrow{display:none}
}
@media (max-width:640px){
  .container{padding:0 16px}
  .section{padding:48px 0}
  .section-tight{padding:40px 0}
  .logo-sub{display:none}
  .hero-band{min-height:210px}
  .hero-band-inner{padding:32px 0 28px}
  .band-sub{font-size:15px;margin-top:10px}
  .tab-panel{padding:16px}
  .faq-q{font-size:16px;padding:16px}
  .faq-a-inner{padding:2px 18px 18px}
  .footer-grid{grid-template-columns:1fr}
  .section-head{margin-bottom:28px}
}
@media (min-width:1024px){
  body{padding-bottom:24px}
}