/* roulang page: index */
:root{
  --c-primary:#175A93;
  --c-primary-deep:#0E3D68;
  --c-primary-soft:#E7F0F9;
  --c-accent:#D98A2B;
  --c-accent-soft:#FDF3E4;
  --c-ink:#0F1B2A;
  --c-ink-2:#46586E;
  --c-ink-3:#8798AC;
  --c-bg:#FFFFFF;
  --c-bg-soft:#F4F8FC;
  --c-line:#E3EAF3;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 4px 14px rgba(16,42,74,.06);
  --sh-2:0 12px 32px rgba(16,42,74,.10);
  --sh-3:0 12px 28px rgba(23,90,147,.28);
  --sp-section:96px;
  --t:.25s ease;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink-2);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{color:var(--c-ink);letter-spacing:-.01em;margin:0}
h1{font-size:clamp(30px,4.2vw,52px);line-height:1.2;font-weight:700}
h2{font-size:clamp(24px,3vw,36px);line-height:1.3;font-weight:700}
h3{font-size:21px;line-height:1.45;font-weight:600}
p{margin:0 0 1em}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--c-primary-deep)}
img{max-width:100%;display:block}
button,input,select,textarea{font-family:inherit;font-size:inherit}
.num,.price-num,.stat-num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
.container{max-width:1200px;padding-left:20px;padding-right:20px}
@media (min-width:1400px){.container{max-width:1280px}}
section{scroll-margin-top:96px}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:10px;
  padding:12px 24px;font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:all var(--t);line-height:1.2;text-align:center}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 18px rgba(23,90,147,.18)}
.btn-primary:hover{background:var(--c-primary-deep);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(23,90,147,.26)}
.btn-outline{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);transform:translateY(-2px)}
.btn-ghost{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.6);color:#fff}
.btn-ghost:hover{background:#fff;color:var(--c-primary-deep)}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:9px}
.btn-block{width:100%}
.btn:focus-visible{outline:3px solid rgba(23,90,147,.35);outline-offset:2px}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1030;
  background:rgba(255,255,255,.62);
  -webkit-backdrop-filter:blur(14px) saturate(160%);
  backdrop-filter:blur(14px) saturate(160%);
  border-bottom:1px solid rgba(255,255,255,.5);
  box-shadow:0 4px 18px rgba(16,42,74,.06);
  transition:background var(--t),box-shadow var(--t),border-color var(--t),padding var(--t);
}
.site-header .nav-wrap{display:flex;align-items:center;gap:24px;height:76px;transition:height var(--t)}
.site-header.is-stuck{
  background:#fff;
  border-bottom:1px solid var(--c-line);
  box-shadow:0 6px 20px rgba(16,42,74,.10);
}
.site-header.is-stuck .nav-wrap{height:64px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--c-primary) 0%,var(--c-primary-deep) 100%);
  color:#fff;font-size:17px;box-shadow:0 6px 16px rgba(23,90,147,.28)}
.brand-text{font-size:17px;font-weight:700;color:var(--c-ink);letter-spacing:-.01em;white-space:nowrap}
.site-header.is-stuck .brand-text{font-size:16px}
.nav-main{display:flex;align-items:center;gap:6px;margin-left:8px;flex:1}
.nav-link{position:relative;padding:9px 14px;font-size:15px;font-weight:500;color:var(--c-ink-2);border-radius:9px}
.nav-link::after{content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;background:var(--c-primary);
  border-radius:2px;transform:scaleX(0);transform-origin:left;transition:transform var(--t)}
.nav-link:hover{color:var(--c-primary)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--c-primary);font-weight:600;background:var(--c-primary-soft)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.icon-btn{width:40px;height:40px;border-radius:11px;border:1px solid var(--c-line);background:#fff;
  color:var(--c-ink-2);display:grid;place-items:center;cursor:pointer;transition:all var(--t)}
.icon-btn:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-soft)}
.burger{display:none;width:42px;height:42px;border-radius:11px;border:1px solid var(--c-line);background:#fff;cursor:pointer}
.burger span{display:block;width:18px;height:2px;background:var(--c-ink);margin:4px auto;border-radius:2px;transition:all var(--t)}
.search-panel{max-height:0;overflow:hidden;transition:max-height var(--t);border-top:1px solid transparent}
.search-panel.is-open{max-height:96px;border-top-color:var(--c-line)}
.search-panel .inner{display:flex;gap:10px;padding:14px 20px;max-width:1200px;margin:0 auto}
.search-panel input{flex:1;height:44px;border-radius:10px;border:1px solid var(--c-line);padding:0 16px;background:#fff;color:var(--c-ink)}
.search-panel input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 4px var(--c-primary-soft)}

/* 移动抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(15,27,42,.42);opacity:0;visibility:hidden;transition:all var(--t);z-index:1040}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);background:#fff;z-index:1050;
  transform:translateX(100%);transition:transform .3s ease;padding:22px 20px;overflow-y:auto;box-shadow:-12px 0 40px rgba(16,42,74,.16)}
body.drawer-open .drawer{transform:translateX(0)}
body.drawer-open .drawer-mask{opacity:1;visibility:visible}
body.drawer-open{overflow:hidden}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer a.drawer-link{display:block;padding:13px 14px;border-radius:11px;color:var(--c-ink);font-weight:500;margin-bottom:6px}
.drawer a.drawer-link:hover,.drawer a.drawer-link.is-active{background:var(--c-primary-soft);color:var(--c-primary)}
.drawer .drawer-cta{margin-top:14px}

/* ---------- Hero ---------- */
.hero{position:relative;padding:150px 0 90px;overflow:hidden;
  background:url("/assets/images/backpic/back-1.webp") center/cover no-repeat}
.hero::before{content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(255,255,255,.96) 0%,rgba(255,255,255,.90) 42%,rgba(231,240,249,.78) 100%)}
.hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:var(--c-accent-soft);color:var(--c-accent);
  border-radius:var(--r-pill);padding:6px 14px;font-size:13px;font-weight:600;margin-bottom:20px}
.hero h1{margin-bottom:18px}
.hero-sub{font-size:17px;color:var(--c-ink-2);max-width:560px;margin-bottom:28px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:32px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;list-style:none;padding:0;margin:0}
.hero-tags a{display:inline-flex;align-items:center;gap:6px;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-pill);padding:7px 15px;font-size:13px;color:var(--c-ink-2);box-shadow:var(--sh-1)}
.hero-tags a:hover{border-color:rgba(23,90,147,.4);color:var(--c-primary);transform:translateY(-1px)}
.hero-visual{position:relative}
.hero-visual .frame{border-radius:var(--r-lg);overflow:hidden;box-shadow:0 20px 48px rgba(16,42,74,.16);border:6px solid #fff}
.hero-visual img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-stats{display:flex;gap:14px;margin-top:18px;flex-wrap:wrap}
.stat-chip{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);padding:12px 16px;flex:1;min-width:130px;box-shadow:var(--sh-1)}
.stat-num{font-size:22px;font-weight:700;color:var(--c-primary);display:block;line-height:1.2}
.stat-label{font-size:13px;color:var(--c-ink-3)}

/* ---------- 通用板块 ---------- */
.section{padding:var(--sp-section) 0}
.section-soft{background:var(--c-bg-soft)}
.section-band{padding:64px 0;background:var(--c-primary-soft)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-label{display:inline-block;font-size:13px;font-weight:700;color:var(--c-primary);
  letter-spacing:.06em;margin-bottom:12px}
.section-head h2{margin-bottom:14px}
.section-head p{font-size:16.5px;color:var(--c-ink-2);margin:0}
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:40px}
.text-link{font-size:14.5px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.text-link i{transition:transform var(--t)}
.text-link:hover i{transform:translateX(3px)}

/* ---------- 卖点 ---------- */
.value-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.value-card{position:relative;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:28px 26px 26px 34px;box-shadow:var(--sh-1);transition:all var(--t)}
.value-card::before{content:"";position:absolute;left:0;top:26px;bottom:26px;width:3px;background:var(--c-primary);border-radius:0 3px 3px 0}
.value-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(23,90,147,.3)}
.value-card.wide{grid-column:span 2;display:grid;grid-template-columns:auto 1fr;gap:24px;align-items:flex-start}
.value-icon{width:46px;height:46px;border-radius:13px;background:var(--c-primary-soft);color:var(--c-primary);
  display:grid;place-items:center;font-size:19px;margin-bottom:16px}
.value-card.wide .value-icon{margin-bottom:0}
.value-card h3{margin-bottom:10px;font-size:20px}
.value-card p{margin:0 0 12px;font-size:15.5px;color:var(--c-ink-2)}
.value-card .text-link{font-size:14px}

/* ---------- 演示 ---------- */
.demo-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;margin-bottom:72px}
.demo-row:last-child{margin-bottom:0}
.demo-row.reverse .demo-media{order:2}
.demo-media{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--c-line);box-shadow:var(--sh-2);background:#fff}
.demo-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .35s ease}
.demo-media:hover img{transform:scale(1.03)}
.demo-body h3{font-size:24px;margin-bottom:14px}
.demo-list{list-style:none;padding:0;margin:0 0 20px}
.demo-list li{position:relative;padding-left:30px;margin-bottom:12px;font-size:15.5px;color:var(--c-ink-2)}
.demo-list li i{position:absolute;left:0;top:5px;color:var(--c-primary);font-size:15px}
.demo-note{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:var(--c-ink-3);
  background:var(--c-bg-soft);border-radius:var(--r-pill);padding:6px 14px}

/* ---------- 证据 ---------- */
.proof-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.proof-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.proof-item{border-left:3px solid var(--c-accent);padding-left:16px}
.proof-item .stat-num{font-size:30px;color:var(--c-ink)}
.proof-item .stat-label{font-size:13.5px}
.quote-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);padding:24px;box-shadow:var(--sh-1);margin-bottom:20px}
.quote-card:last-child{margin-bottom:0}
.quote-card p{font-size:15px;color:var(--c-ink-2);margin-bottom:14px}
.quote-user{display:flex;align-items:center;gap:12px}
.avatar{width:38px;height:38px;border-radius:50%;background:var(--c-primary-soft);color:var(--c-primary);
  display:grid;place-items:center;font-weight:700;font-size:14px}
.quote-user strong{display:block;font-size:14.5px;color:var(--c-ink)}
.quote-user span{font-size:13px;color:var(--c-ink-3)}
.partners{display:flex;flex-wrap:wrap;gap:14px 30px;margin-top:44px;padding-top:28px;border-top:1px dashed var(--c-line)}
.partners span{font-size:14px;color:var(--c-ink-3);font-weight:600;letter-spacing:.02em}

/* ---------- 资讯 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);transition:all var(--t);height:100%}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(23,90,147,.3)}
.news-thumb{position:relative;overflow:hidden;aspect-ratio:16/9;background:var(--c-bg-soft)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.badge-cat{position:absolute;left:12px;top:12px;background:var(--c-accent-soft);color:var(--c-accent);
  font-size:12.5px;font-weight:600;border-radius:var(--r-pill);padding:4px 12px}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.news-title{font-size:17px;line-height:1.55;font-weight:600;color:var(--c-ink);margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card:hover .news-title{color:var(--c-primary)}
.news-excerpt{font-size:14.5px;color:var(--c-ink-2);margin:0 0 16px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:auto;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--c-ink-3)}
.news-meta .sep{width:1px;height:12px;background:var(--c-line)}
.news-meta .arrow{margin-left:auto;color:var(--c-primary)}
.empty-state{border:1px dashed var(--c-line);border-radius:var(--r-md);background:#fff;
  min-height:220px;display:grid;place-items:center;text-align:center;padding:36px 20px}
.empty-state i{font-size:30px;color:var(--c-ink-3);display:block;margin-bottom:12px}
.empty-state p{color:var(--c-ink-3);margin:0 0 16px}

/* ---------- 价格 ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price-card{position:relative;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:32px 26px;display:flex;flex-direction:column;box-shadow:var(--sh-1);transition:all var(--t)}
.price-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.price-card.featured{border:2px solid var(--c-primary);box-shadow:0 18px 40px rgba(23,90,147,.16);transform:translateY(-8px)}
.price-card.featured:hover{transform:translateY(-10px)}
.price-badge{position:absolute;top:-14px;left:26px;background:var(--c-accent);color:#fff;font-size:12.5px;
  font-weight:700;border-radius:var(--r-pill);padding:5px 14px;letter-spacing:.04em}
.price-name{font-size:18px;font-weight:700;color:var(--c-ink);margin-bottom:6px}
.price-desc{font-size:13.5px;color:var(--c-ink-3);margin-bottom:20px}
.price-num{font-size:38px;font-weight:700;color:var(--c-primary);line-height:1}
.price-num small{font-size:14px;font-weight:500;color:var(--c-ink-3);margin-left:6px}
.price-list{list-style:none;padding:0;margin:24px 0 26px;flex:1}
.price-list li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;margin-bottom:12px;color:var(--c-ink-2)}
.price-list li i{font-size:14px;margin-top:5px}
.price-list li .fa-circle-check{color:var(--c-primary)}
.price-list li.off{color:var(--c-ink-3)}
.price-list li .fa-circle-xmark{color:var(--c-ink-3)}
.price-foot{font-size:13px;color:var(--c-ink-3);text-align:center;margin-top:26px}

/* ---------- FAQ ---------- */
.faq .accordion-item{border:1px solid var(--c-line);border-radius:var(--r-md);background:#fff;
  margin-bottom:12px;overflow:hidden;box-shadow:var(--sh-1)}
.faq .accordion-button{display:flex;align-items:center;gap:14px;padding:20px 22px;font-size:16.5px;
  font-weight:600;color:var(--c-ink);background:#fff;box-shadow:none;border:0;width:100%;text-align:left}
.faq .accordion-button::after{display:none}
.faq .accordion-button:not(.collapsed){color:var(--c-primary);background:#fff}
.faq .accordion-button:focus{box-shadow:none;outline:none}
.faq .q-num{font-size:14px;font-weight:700;color:var(--c-primary);flex-shrink:0}
.faq .plus{margin-left:auto;width:26px;height:26px;border-radius:50%;background:var(--c-primary-soft);
  color:var(--c-primary);display:grid;place-items:center;font-size:13px;flex-shrink:0;transition:transform var(--t)}
.faq .accordion-button:not(.collapsed) .plus{transform:rotate(45deg);background:var(--c-primary);color:#fff}
.faq .accordion-body{padding:0 22px 24px 60px;font-size:15.5px;color:var(--c-ink-2)}

/* ---------- 联系 ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:48px;align-items:start}
.info-list{list-style:none;padding:0;margin:26px 0 0}
.info-list li{display:flex;gap:14px;align-items:flex-start;margin-bottom:20px}
.info-list .ic{width:42px;height:42px;border-radius:12px;background:#fff;border:1px solid var(--c-line);
  color:var(--c-primary);display:grid;place-items:center;flex-shrink:0;box-shadow:var(--sh-1)}
.info-list strong{display:block;font-size:14.5px;color:var(--c-ink);margin-bottom:2px}
.info-list span{font-size:14.5px;color:var(--c-ink-2)}
.form-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);padding:30px;box-shadow:var(--sh-2)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--c-ink);margin-bottom:8px}
.field input,.field select,.field textarea{width:100%;border:1px solid var(--c-line);border-radius:10px;
  background:#fff;color:var(--c-ink);padding:0 16px;height:48px;transition:border-color var(--t),box-shadow var(--t)}
.field textarea{height:auto;min-height:120px;padding:14px 16px;line-height:1.7;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 4px var(--c-primary-soft)}
.field input::placeholder,.field textarea::placeholder{color:var(--c-ink-3)}
.check-line{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--c-ink-2);margin-bottom:20px}
.check-line input{width:18px;height:18px;margin-top:3px;flex-shrink:0;accent-color:var(--c-primary)}
.form-hint{font-size:13.5px;color:var(--c-primary);margin-top:14px;display:none}
.form-hint.is-show{display:block}

/* ---------- CTA 窄带 ---------- */
.cta-band{background:var(--c-primary-deep);color:#fff;padding:64px 0;position:relative;overflow:hidden}
.cta-band::after{content:"";position:absolute;right:-80px;top:-60px;width:320px;height:320px;border-radius:50%;
  background:rgba(255,255,255,.06)}
.cta-band .inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{color:#fff;margin-bottom:8px;font-size:clamp(22px,2.6vw,32px)}
.cta-band p{color:rgba(255,255,255,.82);margin:0;font-size:15.5px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-bg-soft);border-top:1px solid var(--c-line);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-about p{font-size:14.5px;color:var(--c-ink-2);margin:0}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col li{margin-bottom:11px}
.footer-col a,.footer-col span{font-size:14.5px;color:var(--c-ink-2)}
.footer-col a:hover{color:var(--c-primary)}
.footer-bottom{margin-top:52px;border-top:1px solid var(--c-line);padding:20px 0;display:flex;
  justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.5px;color:var(--c-ink-3)}
.footer-bottom a{color:var(--c-ink-3)}
.footer-bottom a:hover{color:var(--c-primary)}

/* ---------- 浮动 CTA ---------- */
.float-cta{position:fixed;right:26px;bottom:26px;z-index:1020;display:inline-flex;align-items:center;gap:9px;
  background:var(--c-primary);color:#fff;border-radius:var(--r-pill);padding:14px 24px;font-weight:600;
  box-shadow:var(--sh-3);opacity:0;visibility:hidden;transform:translateY(14px);transition:all var(--t)}
.float-cta.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta:hover{background:var(--c-primary-deep);color:#fff;transform:scale(1.02)}
.mobile-bar{display:none}

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

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--sp-section:80px}
  .hero{padding:132px 0 76px}
  .demo-row{gap:40px}
}
@media (max-width:991px){
  :root{--sp-section:72px}
  .nav-main{display:none}
  .burger{display:block}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero{padding:120px 0 64px}
  .value-grid{grid-template-columns:1fr}
  .value-card.wide{grid-column:span 1;grid-template-columns:1fr}
  .value-card.wide .value-icon{margin-bottom:14px}
  .demo-row{grid-template-columns:1fr;gap:28px;margin-bottom:56px}
  .demo-row.reverse .demo-media{order:0}
  .proof-grid{grid-template-columns:1fr;gap:32px}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .price-grid{grid-template-columns:1fr;gap:28px}
  .price-card.featured{transform:none}
  .price-card.featured:hover{transform:translateY(-2px)}
  .contact-grid{grid-template-columns:1fr;gap:34px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .float-cta{display:none}
  .mobile-bar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:1025;height:56px;
    background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-top:1px solid var(--c-line);
    align-items:center;justify-content:space-between;gap:12px;padding:0 16px;box-shadow:0 -6px 18px rgba(16,42,74,.08)}
  .mobile-bar span{font-size:13.5px;color:var(--c-ink-2)}
  .site-footer{padding-bottom:64px}
}
@media (max-width:767px){
  :root{--sp-section:56px}
  h1{font-size:clamp(30px,7vw,38px)}
  .hero{padding:112px 0 56px}
  .hero-actions .btn{width:100%}
  .news-grid{grid-template-columns:1fr}
  .proof-stats{grid-template-columns:1fr 1fr;gap:18px}
  .proof-item .stat-num{font-size:26px}
  .form-row{grid-template-columns:1fr}
  .form-card{padding:22px 18px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .cta-band{padding:48px 0}
  .faq .accordion-body{padding-left:22px}
}
@media (max-width:520px){
  .container{padding-left:16px;padding-right:16px}
  .brand-text{font-size:15.5px}
  .btn{padding:11px 18px}
  .hero-tags a{font-size:12.5px;padding:6px 12px}
  .price-num{font-size:32px}
  .section-band{padding:48px 0}
}

/* roulang page: category1 */
:root{
  --c-primary:#175A93;
  --c-primary-deep:#0E3D68;
  --c-primary-soft:#E7F0F9;
  --c-accent:#D98A2B;
  --c-accent-soft:#FDF3E4;
  --c-ink:#0F1B2A;
  --c-ink-2:#46586E;
  --c-ink-3:#8798AC;
  --c-bg:#FFFFFF;
  --c-bg-soft:#F4F8FC;
  --c-line:#E3EAF3;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 4px 14px rgba(16,42,74,.06);
  --sh-2:0 12px 32px rgba(16,42,74,.10);
  --sh-3:0 12px 28px rgba(23,90,147,.28);
  --nav-h:76px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:110px;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink-2);
  background:var(--c-bg);
  padding-top:var(--nav-h);
  overflow-x:hidden;
}
h1,h2,h3,h4{color:var(--c-ink);margin:0 0 16px;font-weight:700;line-height:1.3;letter-spacing:-.01em}
h1{font-size:clamp(30px,4.2vw,52px);line-height:1.2}
h2{font-size:clamp(24px,3vw,36px)}
h3{font-size:20px;font-weight:600;line-height:1.45}
h4{font-size:17px;font-weight:600}
p{margin:0 0 1.15em}
a{color:var(--c-primary);text-decoration:none;transition:color .25s ease,background-color .25s ease,border-color .25s ease}
a:hover{color:var(--c-primary-deep)}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button,input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:3px solid rgba(23,90,147,.4);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
.section{padding:96px 0}
.section-head{max-width:800px;margin:0 0 48px}
.section-head p{margin-bottom:0;font-size:17px}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--c-primary);background:var(--c-primary-soft);
  padding:5px 14px;border-radius:var(--r-pill);margin-bottom:18px;
}
.band{background:var(--c-bg-soft);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:10px;font-size:16px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all .25s ease;line-height:1.4;
}
.btn i{font-size:14px}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 16px rgba(23,90,147,.18)}
.btn-primary:hover{background:var(--c-primary-deep);color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(23,90,147,.24)}
.btn-outline{background:transparent;color:var(--c-primary);border-color:rgba(23,90,147,.45)}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);border-color:var(--c-primary)}
.btn-ghost{background:rgba(255,255,255,.7);color:var(--c-primary-deep);border-color:rgba(23,90,147,.25)}
.btn-ghost:hover{background:#fff;color:var(--c-primary-deep);border-color:var(--c-primary)}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:9px}
.btn-block{width:100%}

/* ---------- header / nav ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1040;
  background:rgba(255,255,255,.62);
  -webkit-backdrop-filter:blur(14px) saturate(160%);
  backdrop-filter:blur(14px) saturate(160%);
  border-bottom:1px solid rgba(255,255,255,.5);
  box-shadow:0 2px 12px rgba(16,42,74,.05);
  transition:background-color .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-stuck{background:#fff;border-bottom-color:var(--c-line);box-shadow:0 6px 20px rgba(16,42,74,.09)}
.nav-wrap{display:flex;align-items:center;gap:24px;height:var(--nav-h);transition:height .25s ease}
.site-header.is-stuck .nav-wrap{height:66px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;color:var(--c-ink)}
.brand:hover{color:var(--c-primary)}
.brand-mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--c-primary),var(--c-primary-deep));
  color:#fff;font-size:16px;box-shadow:0 6px 14px rgba(23,90,147,.25);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:-.01em}
.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:500;
  color:var(--c-ink-2);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-link:hover{color:var(--c-primary);background:rgba(231,240,249,.55)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--c-primary);font-weight:600;background:rgba(231,240,249,.75)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.icon-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--c-line);background:rgba(255,255,255,.8);
  color:var(--c-ink-2);display:grid;place-items:center;cursor:pointer;transition:all .25s ease;
}
.icon-btn:hover{color:var(--c-primary);border-color:rgba(23,90,147,.4);background:#fff}
.burger{display:none;width:42px;height:42px;border-radius:11px;border:1px solid var(--c-line);background:rgba(255,255,255,.85);cursor:pointer;padding:0 10px}
.burger span{display:block;height:2px;border-radius:2px;background:var(--c-ink);margin:4px 0;transition:transform .25s ease,opacity .25s ease}
.burger.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.burger.is-open span:nth-child(2){opacity:0}
.burger.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.search-panel{max-height:0;overflow:hidden;transition:max-height .3s ease;border-top:1px solid transparent;background:rgba(255,255,255,.9)}
.search-panel.is-open{max-height:120px;border-top-color:var(--c-line)}
.search-panel .inner{display:flex;gap:12px;max-width:1200px;margin:0 auto;padding:14px 24px}
.search-panel input{
  flex:1;height:46px;border-radius:10px;border:1px solid var(--c-line);padding:0 16px;background:#fff;
}
.search-panel input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 4px var(--c-primary-soft)}
.drawer{
  position:fixed;inset:var(--nav-h) 0 auto 0;z-index:1030;background:#fff;border-bottom:1px solid var(--c-line);
  box-shadow:0 18px 40px rgba(16,42,74,.12);padding:12px 24px 22px;
  transform:translateY(-12px);opacity:0;visibility:hidden;transition:all .25s ease;
}
.drawer.is-open{transform:none;opacity:1;visibility:visible}
.drawer a{display:block;padding:14px 4px;border-bottom:1px solid var(--c-line);font-size:16px;font-weight:500;color:var(--c-ink)}
.drawer a.is-active{color:var(--c-primary);font-weight:700}
.drawer .btn{margin-top:18px}

/* ---------- category hero ---------- */
.cat-hero{
  position:relative;padding:150px 0 84px;
  background-image:
    linear-gradient(115deg,rgba(255,255,255,.97) 0%,rgba(255,255,255,.9) 46%,rgba(231,240,249,.74) 100%),
    url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--c-line);
}
.cat-hero::after{
  content:"";position:absolute;right:-120px;top:-80px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(23,90,147,.12),rgba(23,90,147,0) 68%);pointer-events:none;
}
.cat-hero .container{position:relative;z-index:2;max-width:1040px}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--c-primary-deep);background:rgba(255,255,255,.85);border:1px solid var(--c-line);
  border-radius:var(--r-pill);padding:6px 16px;margin-bottom:22px;
}
.hero-tag i{color:var(--c-accent)}
.cat-hero h1{max-width:900px}
.cat-hero .lede{font-size:18px;max-width:720px;margin:18px 0 30px;color:var(--c-ink-2)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero-meta{display:flex;flex-wrap:wrap;gap:24px;margin-top:34px;padding-top:24px;border-top:1px dashed var(--c-line)}
.hero-meta div{font-size:14px;color:var(--c-ink-3)}
.hero-meta strong{display:block;font-size:20px;color:var(--c-ink);font-weight:700}

/* ---------- subnav ---------- */
.subnav{
  position:sticky;top:var(--nav-h);z-index:1020;background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--c-line);
}
.subnav-inner{display:flex;align-items:center;gap:18px;height:62px;overflow:hidden}
.subnav-label{font-size:13px;font-weight:700;color:var(--c-ink-3);flex-shrink:0;letter-spacing:.04em}
.subnav-links{display:flex;gap:6px;overflow-x:auto;scrollbar-width:none}
.subnav-links::-webkit-scrollbar{display:none}
.subnav-links a{
  white-space:nowrap;font-size:14px;font-weight:500;color:var(--c-ink-2);
  padding:7px 14px;border-radius:var(--r-pill);border:1px solid transparent;
}
.subnav-links a:hover{color:var(--c-primary);background:var(--c-primary-soft);border-color:rgba(23,90,147,.18)}

/* ---------- split layout ---------- */
.split{display:grid;grid-template-columns:1.32fr .92fr;gap:56px;align-items:start}
.split-main p{font-size:16.5px}
.split-side{position:sticky;top:150px}
.sticky-figure{margin:0;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--c-line);box-shadow:var(--sh-1);background:#fff}
.sticky-figure img{width:100%;aspect-ratio:16/10;object-fit:cover}
.sticky-figure figcaption{padding:14px 18px;font-size:13px;color:var(--c-ink-3);border-top:1px solid var(--c-line);background:var(--c-bg-soft)}
.side-note{
  margin-top:20px;padding:22px 24px;border-radius:var(--r-md);
  background:var(--c-accent-soft);border:1px solid #F3DFBE;
}
.side-note h4{margin-bottom:8px;font-size:16px;color:#8A5410}
.side-note p{margin:0;font-size:14px;color:#8A5410;line-height:1.75}

/* ---------- numbered list ---------- */
.num-list{margin-top:12px;border-top:1px solid var(--c-line)}
.num-item{display:flex;gap:18px;padding:20px 4px;border-bottom:1px solid var(--c-line);transition:background-color .25s ease}
.num-item:hover{background:var(--c-bg-soft)}
.num-item .idx{
  flex:0 0 44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:var(--c-primary-soft);color:var(--c-primary);font-weight:700;font-size:15px;
  font-variant-numeric:tabular-nums;
}
.num-item h4{margin:0 0 4px;font-size:16.5px}
.num-item p{margin:0;font-size:15px;color:var(--c-ink-2)}

/* ---------- timeline ---------- */
.timeline{position:relative;margin-top:8px;padding-left:8px}
.timeline::before{content:"";position:absolute;left:27px;top:14px;bottom:14px;width:2px;background:linear-gradient(180deg,var(--c-primary),rgba(23,90,147,.12))}
.tl-item{position:relative;display:flex;gap:26px;padding:0 0 30px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:relative;z-index:2;flex:0 0 56px;height:56px;border-radius:16px;
  display:grid;place-items:center;background:#fff;border:1px solid var(--c-line);
  color:var(--c-primary);font-weight:700;font-size:16px;box-shadow:var(--sh-1);
  font-variant-numeric:tabular-nums;
}
.tl-body{
  flex:1;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:22px 26px;box-shadow:var(--sh-1);transition:all .25s ease;
}
.tl-body:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(23,90,147,.3)}
.tl-body h3{margin-bottom:8px}
.tl-body p{margin:0;font-size:15.5px}

/* ---------- feature grid ---------- */
.feat-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:24px}
.feat-card{
  position:relative;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh-1);transition:all .25s ease;overflow:hidden;
}
.feat-card::before{content:"";position:absolute;left:0;top:24px;bottom:24px;width:3px;border-radius:0 3px 3px 0;background:var(--c-primary);opacity:.85}
.feat-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(23,90,147,.3)}
.feat-card-lg{grid-row:span 2;display:flex;flex-direction:column;justify-content:space-between;padding:34px}
.feat-icon{
  width:48px;height:48px;border-radius:14px;display:grid;place-items:center;
  background:var(--c-primary-soft);color:var(--c-primary);font-size:19px;margin-bottom:18px;
}
.feat-card h3{margin-bottom:10px}
.feat-card p{font-size:15.5px;margin-bottom:0}
.feat-card .mini-list{margin-top:20px;display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-block;font-size:13px;font-weight:600;padding:5px 12px;border-radius:var(--r-pill);
  background:var(--c-accent-soft);color:#96611A;
}
.tag-line{background:var(--c-bg-soft);color:var(--c-ink-2);border:1px solid var(--c-line)}
.feat-media{margin-top:24px;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--c-line)}
.feat-media img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* ---------- stat strip ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);
}
.stat-item{padding:34px 26px;border-right:1px solid var(--c-line);text-align:left}
.stat-item:last-child{border-right:none}
.stat-num{display:block;font-size:clamp(28px,3.4vw,40px);font-weight:700;color:var(--c-primary);line-height:1.1;font-variant-numeric:tabular-nums}
.stat-num small{font-size:15px;font-weight:600;margin-left:6px;color:var(--c-ink-2)}
.stat-label{display:block;margin-top:10px;font-size:14.5px;color:var(--c-ink-3)}
.stat-note{margin-top:18px;font-size:14px;color:var(--c-ink-3)}

/* ---------- faq ---------- */
.faq-wrap{max-width:900px;margin:0 auto}
.accordion-item{
  border:1px solid var(--c-line)!important;border-radius:var(--r-md)!important;
  margin-bottom:12px;overflow:hidden;background:#fff;box-shadow:var(--sh-1);
}
.accordion-button{
  display:flex;align-items:center;gap:16px;width:100%;padding:20px 24px;
  font-size:16.5px;font-weight:600;color:var(--c-ink);background:#fff;border:none;text-align:left;
  transition:background-color .25s ease,color .25s ease;
}
.accordion-button:not(.collapsed){color:var(--c-primary);background:var(--c-primary-soft)}
.accordion-button:focus{box-shadow:0 0 0 4px var(--c-primary-soft);outline:none}
.accordion-button::after{display:none}
.faq-no{font-size:14px;font-weight:700;color:var(--c-primary);font-variant-numeric:tabular-nums;flex-shrink:0}
.acc-plus{
  margin-left:auto;flex-shrink:0;width:28px;height:28px;border-radius:50%;
  display:grid;place-items:center;background:var(--c-bg-soft);color:var(--c-primary);
  transition:transform .25s ease,background-color .25s ease;
}
.accordion-button:not(.collapsed) .acc-plus{transform:rotate(45deg);background:#fff}
.accordion-body{padding:4px 24px 22px 60px;font-size:15.5px;color:var(--c-ink-2)}
.accordion-body p{margin-bottom:0}

/* ---------- cta band ---------- */
.cta-band{background:linear-gradient(120deg,var(--c-primary-soft),#F7FBFE);border-top:1px solid var(--c-line);padding:72px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap}
.cta-inner h2{margin-bottom:8px}
.cta-inner p{margin-bottom:0;max-width:620px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{background:var(--c-bg-soft);border-top:1px solid var(--c-line);padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;color:var(--c-ink)}
.footer-about p{font-size:14.5px;max-width:340px;color:var(--c-ink-2)}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--c-ink)}
.footer-col ul li{margin-bottom:11px;font-size:14.5px;color:var(--c-ink-2)}
.footer-col a{color:var(--c-ink-2)}
.footer-col a:hover{color:var(--c-primary)}
.footer-bottom{
  margin-top:52px;padding:22px 0;border-top:1px solid var(--c-line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:var(--c-ink-3);
}
.footer-bottom a{color:var(--c-ink-3)}
.footer-bottom a:hover{color:var(--c-primary)}

/* ---------- float cta ---------- */
.float-cta{
  position:fixed;right:26px;bottom:26px;z-index:1050;
  display:inline-flex;align-items:center;gap:9px;
  padding:14px 24px;border-radius:var(--r-pill);
  background:var(--c-primary);color:#fff;font-weight:600;font-size:15px;
  box-shadow:var(--sh-3);transform:translateY(16px);opacity:0;visibility:hidden;
  transition:all .3s ease;
}
.float-cta.is-show{transform:none;opacity:1;visibility:visible}
.float-cta:hover{background:var(--c-primary-deep);color:#fff;transform:scale(1.02)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .container{max-width:1140px}
  .split{gap:40px}
}
@media (max-width:992px){
  .nav-main{display:none}
  .burger{display:block}
  .section{padding:72px 0}
  .cat-hero{padding:130px 0 64px}
  .split{grid-template-columns:1fr;gap:34px}
  .split-side{position:static}
  .feat-grid{grid-template-columns:1fr}
  .feat-card-lg{grid-row:auto}
  .stat-strip{grid-template-columns:repeat(2,1fr)}
  .stat-item:nth-child(2){border-right:none}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--c-line)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .subnav{top:66px}
}
@media (max-width:768px){
  body{padding-top:66px;padding-bottom:56px}
  :root{--nav-h:66px}
  .section{padding:60px 0}
  .container{padding:0 18px}
  .cat-hero{padding:118px 0 54px}
  .cat-hero .lede{font-size:16.5px}
  .hero-meta{gap:18px 28px}
  .hero-actions .btn{width:100%}
  .timeline::before{left:21px}
  .tl-dot{flex:0 0 44px;height:44px;font-size:14px;border-radius:13px}
  .tl-item{gap:16px}
  .tl-body{padding:20px}
  .accordion-body{padding:4px 20px 20px 20px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
  .float-cta{
    left:0;right:0;bottom:0;width:100%;border-radius:0;justify-content:center;
    padding:0;height:56px;transform:none;font-size:15px;
  }
  .float-cta.is-show{transform:none}
}
@media (max-width:520px){
  .stat-strip{grid-template-columns:1fr}
  .stat-item{border-right:none;border-bottom:1px solid var(--c-line)}
  .stat-item:last-child{border-bottom:none}
  .num-item{flex-direction:column;gap:10px}
  .brand-text{font-size:16px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *{transition:none!important}
}

/* roulang page: article */
:root{
  --c-primary:#175A93;
  --c-primary-deep:#0E3D68;
  --c-primary-soft:#E7F0F9;
  --c-accent:#D98A2B;
  --c-accent-soft:#FDF3E4;
  --c-ink:#0F1B2A;
  --c-ink-2:#46586E;
  --c-ink-3:#8798AC;
  --c-bg:#FFFFFF;
  --c-bg-soft:#F4F8FC;
  --c-line:#E3EAF3;
  --r-sm:8px;--r-md:14px;--r-lg:20px;--r-pill:999px;
  --sh-1:0 4px 14px rgba(16,42,74,.06);
  --sh-2:0 12px 32px rgba(16,42,74,.10);
  --sh-3:0 12px 28px rgba(23,90,147,.28);
  --nav-h:72px;
  --font: "PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;padding:0;background:var(--c-bg);color:var(--c-ink-2);
  font-family:var(--font);font-size:17px;line-height:1.85;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color .25s ease}
a:hover{color:var(--c-primary-deep)}
h1,h2,h3,h4,h5{margin:0;color:var(--c-ink);font-weight:700;letter-spacing:-.01em;line-height:1.3}
p{margin:0 0 1.1em}
ul,ol{margin:0 0 1.1em;padding-left:1.25em}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
:focus-visible{outline:3px solid rgba(23,90,147,.45);outline-offset:2px;border-radius:6px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:1400px){.container{max-width:1240px}}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1050;
  background:rgba(255,255,255,.62);
  -webkit-backdrop-filter:blur(14px) saturate(160%);
  backdrop-filter:blur(14px) saturate(160%);
  border-bottom:1px solid rgba(255,255,255,.5);
  box-shadow:0 2px 12px rgba(16,42,74,.04);
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-stuck{
  background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--c-line);
  box-shadow:0 6px 20px rgba(16,42,74,.08);
}
.nav-wrap{display:flex;align-items:center;gap:22px;height:var(--nav-h);transition:height .25s ease}
.site-header.is-stuck .nav-wrap{height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(150deg,var(--c-primary),var(--c-primary-deep));
  color:#fff;font-size:17px;box-shadow:0 6px 16px rgba(23,90,147,.28);
}
.brand-text{font-size:19px;font-weight:700;color:var(--c-ink);letter-spacing:-.01em}
.nav-main{display:flex;align-items:center;gap:4px;margin-left:6px}
.nav-link{
  position:relative;padding:8px 14px;font-size:15.5px;font-weight:500;color:var(--c-ink-2);
  border-radius:var(--r-sm);transition:color .25s ease,background .25s ease;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-link:hover{color:var(--c-primary)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--c-primary);background:var(--c-primary-soft)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.icon-btn{
  width:40px;height:40px;border-radius:var(--r-pill);border:1px solid var(--c-line);background:#fff;
  color:var(--c-ink-2);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:.25s ease;
}
.icon-btn:hover{color:var(--c-primary);border-color:rgba(23,90,147,.35);background:var(--c-primary-soft)}
.burger{display:none;width:42px;height:42px;border:1px solid var(--c-line);background:#fff;border-radius:var(--r-sm);cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.burger span{display:block;width:19px;height:2px;border-radius:2px;background:var(--c-ink-2);transition:.25s ease}
.burger.is-on span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.is-on span:nth-child(2){opacity:0}
.burger.is-on span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.search-panel{max-height:0;overflow:hidden;transition:max-height .3s ease;border-top:1px solid transparent;background:rgba(255,255,255,.96)}
.search-panel.is-open{max-height:96px;border-top:1px solid var(--c-line)}
.search-panel .inner{display:flex;gap:10px;max-width:1200px;margin:0 auto;padding:14px 20px}
.search-panel input{
  flex:1;height:48px;border-radius:10px;border:1px solid var(--c-line);padding:0 16px;background:#fff;
  transition:.25s ease;
}
.search-panel input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 4px var(--c-primary-soft)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:10px;font-size:15.5px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;transition:.25s ease;white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 18px rgba(23,90,147,.20)}
.btn-primary:hover{background:var(--c-primary-deep);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(23,90,147,.28)}
.btn-outline{background:transparent;color:var(--c-primary);border-color:var(--c-primary)}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-deep)}
.btn-ghost{background:rgba(255,255,255,.16);color:#fff;border-color:rgba(255,255,255,.6)}
.btn-ghost:hover{background:#fff;color:var(--c-primary-deep)}
.btn-sm{padding:9px 18px;font-size:14.5px}
.btn-block{width:100%}
.btn:active{transform:translateY(0) scale(.99)}

/* ---------- 文章 ---------- */
.article-hero{
  padding:calc(var(--nav-h) + 42px) 0 34px;
  background:linear-gradient(180deg,var(--c-bg-soft) 0%,#fff 100%);
  border-bottom:1px solid var(--c-line);
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--c-ink-3);margin-bottom:20px}
.crumb a{color:var(--c-ink-3)}
.crumb a:hover{color:var(--c-primary)}
.crumb .sep{color:#C3CFDD}
.crumb .current{color:var(--c-ink-2);max-width:46ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;padding:5px 13px;border-radius:var(--r-pill);
  background:var(--c-accent-soft);color:#A8631A;font-size:13px;font-weight:600;
}
.article-hero h1{
  margin:16px 0 18px;font-size:clamp(26px,3.4vw,40px);line-height:1.32;font-weight:700;max-width:20ch;
  letter-spacing:-.01em;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;font-size:14px;color:var(--c-ink-3)}
.article-meta span{display:inline-flex;align-items:center;gap:7px}
.article-meta i{color:var(--c-primary);font-size:13px}
.meta-line{height:1px;background:var(--c-line);margin-top:26px}

.layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;padding:56px 0 72px;align-items:start}
.article-body{max-width:800px;font-size:17px;line-height:1.9;color:var(--c-ink-2)}
.article-body h2{
  font-size:clamp(20px,2.2vw,25px);margin:2em 0 .7em;padding-left:14px;position:relative;line-height:1.45;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:3px;background:var(--c-primary);
}
.article-body h3{font-size:19px;margin:1.7em 0 .6em;color:var(--c-primary-deep)}
.article-body h4{font-size:17px;margin:1.4em 0 .5em}
.article-body p{margin:0 0 1.2em}
.article-body a{color:var(--c-primary);border-bottom:1px solid rgba(23,90,147,.35)}
.article-body a:hover{border-bottom-color:var(--c-primary)}
.article-body ul,.article-body ol{padding-left:1.35em;margin:0 0 1.3em}
.article-body li{margin-bottom:.5em}
.article-body img{border-radius:12px;margin:1.4em 0;box-shadow:var(--sh-1)}
.article-body blockquote{
  margin:1.5em 0;padding:16px 22px;background:var(--c-bg-soft);border-left:4px solid var(--c-primary);
  border-radius:0 var(--r-md) var(--r-md) 0;color:var(--c-ink);font-size:16.5px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body table{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:15px;display:block;overflow-x:auto}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:11px 14px;text-align:left;white-space:nowrap}
.article-body th{background:var(--c-primary-soft);color:var(--c-ink)}
.article-body tbody tr:nth-child(even){background:#FAFCFE}
.article-body pre{
  background:#0F1B2A;color:#E6EEF7;border-radius:var(--r-md);padding:18px 20px;overflow-x:auto;
  font-size:14px;line-height:1.7;margin:1.5em 0;
}
.article-body code{background:var(--c-bg-soft);padding:2px 6px;border-radius:6px;font-size:.92em;color:var(--c-primary-deep)}
.article-body pre code{background:transparent;padding:0;color:inherit}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:2.4em 0}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:13.5px;color:var(--c-ink-3);text-align:center;margin-top:10px}

.notice-empty{
  border:1px dashed var(--c-line);border-radius:var(--r-lg);background:var(--c-bg-soft);
  padding:56px 28px;text-align:center;
}
.notice-empty i{font-size:34px;color:var(--c-ink-3)}
.notice-empty h2{margin:16px 0 10px;font-size:21px;padding:0}
.notice-empty h2::before{display:none}
.notice-empty p{color:var(--c-ink-3);margin-bottom:22px}

.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:40px 0 0;padding-top:26px;border-top:1px solid var(--c-line)}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:var(--r-pill);
  background:var(--c-bg-soft);border:1px solid var(--c-line);color:var(--c-ink-2);font-size:13.5px;
  transition:.25s ease;
}
.tag:hover{background:var(--c-primary-soft);border-color:rgba(23,90,147,.3);color:var(--c-primary-deep)}

.article-nav{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:34px 0 0}
.article-nav a{
  display:block;padding:20px 22px;border:1px solid var(--c-line);border-radius:var(--r-md);background:#fff;
  transition:.25s ease;
}
.article-nav a:hover{border-color:rgba(23,90,147,.3);box-shadow:var(--sh-2);transform:translateY(-2px)}
.article-nav .k{display:block;font-size:13px;color:var(--c-ink-3);margin-bottom:8px}
.article-nav .v{display:block;font-size:16px;font-weight:600;color:var(--c-ink)}

.back-group{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}

/* ---------- 侧栏 ---------- */
.side{position:sticky;top:calc(var(--nav-h) + 24px);display:flex;flex-direction:column;gap:22px}
.side-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);padding:24px;box-shadow:var(--sh-1);
}
.side-card h3{font-size:17px;margin-bottom:14px}
.side-card p{font-size:14.5px;color:var(--c-ink-2);margin-bottom:18px}
.side-list{list-style:none;padding:0;margin:0}
.side-list li{padding:11px 0;border-bottom:1px dashed var(--c-line);font-size:14.5px}
.side-list li:last-child{border-bottom:0;padding-bottom:0}
.side-list a{display:flex;align-items:center;gap:9px;color:var(--c-ink-2)}
.side-list a:hover{color:var(--c-primary)}
.side-list i{color:var(--c-primary);font-size:12px}
.side-card.highlight{background:var(--c-primary-soft);border-color:rgba(23,90,147,.18)}
.side-card.highlight h3{color:var(--c-primary-deep)}
.side-card.highlight p{color:var(--c-ink-2)}

/* ---------- 相关推荐 ---------- */
.related{padding:72px 0;background:var(--c-bg-soft);border-top:1px solid var(--c-line)}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;gap:14px;margin-bottom:34px}
.sec-head h2{font-size:clamp(22px,2.6vw,30px)}
.sec-head p{font-size:15px;color:var(--c-ink-3);margin:8px 0 0;max-width:60ch}
.sec-head .more{margin-left:auto;font-size:15px;font-weight:600;display:inline-flex;align-items:center;gap:8px}
.sec-head .more:hover{gap:12px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card-post{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);transition:.25s ease;height:100%;
}
.card-post:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(23,90,147,.3)}
.card-post .thumb{position:relative;padding-top:56.25%;overflow:hidden;background:var(--c-bg-soft)}
.card-post .thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.card-post:hover .thumb img{transform:scale(1.03)}
.card-post .body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1}
.card-post .badge-cat{align-self:flex-start;margin-bottom:12px}
.card-post h3{font-size:17.5px;line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-post h3 a{color:var(--c-ink)}
.card-post h3 a:hover{color:var(--c-primary)}
.card-post .excerpt{font-size:14.5px;color:var(--c-ink-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:16px}
.card-post .foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13.5px;color:var(--c-ink-3);padding-top:14px;border-top:1px solid var(--c-line)}
.card-post .foot i{color:var(--c-primary)}

/* ---------- CTA 带 ---------- */
.cta-band{padding:64px 0}
.cta-inner{
  background:linear-gradient(135deg,var(--c-primary-soft),#FBFDFF);
  border:1px solid rgba(23,90,147,.16);border-radius:var(--r-lg);
  padding:44px clamp(24px,4vw,56px);
  display:flex;flex-wrap:wrap;align-items:center;gap:26px;
}
.cta-inner h2{font-size:clamp(21px,2.4vw,27px);margin-bottom:10px}
.cta-inner p{margin:0;color:var(--c-ink-2);font-size:16px;max-width:52ch}
.cta-inner .acts{margin-left:auto;display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-bg-soft);border-top:1px solid var(--c-line);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-about p{font-size:14.5px;color:var(--c-ink-2);max-width:38ch;margin:0}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--c-ink)}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col li{margin-bottom:11px;font-size:14.5px;color:var(--c-ink-2)}
.footer-col a{color:var(--c-ink-2);font-size:14.5px}
.footer-col a:hover{color:var(--c-primary)}
.footer-bottom{
  margin-top:48px;border-top:1px solid var(--c-line);padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13.5px;color:var(--c-ink-3);
}
.footer-bottom a{color:var(--c-ink-3)}
.footer-bottom a:hover{color:var(--c-primary)}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:26px;bottom:26px;z-index:1030;
  display:inline-flex;align-items:center;gap:9px;padding:14px 24px;border-radius:var(--r-pill);
  background:var(--c-primary);color:#fff;font-weight:600;font-size:15px;box-shadow:var(--sh-3);
  opacity:0;visibility:hidden;transform:translateY(14px);transition:.3s ease;
}
.float-cta.is-show{opacity:1;visibility:visible;transform:none}
.float-cta:hover{background:var(--c-primary-deep);color:#fff;transform:scale(1.02)}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .layout{grid-template-columns:minmax(0,1fr) 270px;gap:40px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
  .footer-col:last-child{grid-column:span 3}
}
@media (max-width:991px){
  .burger{display:flex}
  .nav-main{
    position:fixed;top:0;right:0;width:min(84vw,330px);height:100vh;background:#fff;
    flex-direction:column;align-items:stretch;gap:0;margin:0;padding:92px 20px 28px;
    transform:translateX(102%);transition:transform .3s ease;box-shadow:-14px 0 40px rgba(16,42,74,.14);
    z-index:1045;overflow-y:auto;
  }
  .nav-main.is-open{transform:none}
  .nav-link{padding:15px 8px;border-bottom:1px solid var(--c-line);border-radius:0;font-size:16px}
  .nav-link::after{display:none}
  .nav-link.is-active{background:transparent;color:var(--c-primary);font-weight:600}
  .layout{grid-template-columns:minmax(0,1fr);gap:34px;padding:44px 0 56px}
  .side{position:static}
  .related{padding:56px 0}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-inner{padding:34px 24px}
  .cta-inner .acts{margin-left:0;width:100%}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-col:last-child{grid-column:span 2}
}
@media (max-width:768px){
  body{font-size:16.5px}
  .article-hero{padding:calc(var(--nav-h) + 30px) 0 26px}
  .article-hero h1{max-width:none}
  .crumb .current{max-width:30ch}
  .article-body{font-size:16.5px;line-height:1.88}
  .article-nav{grid-template-columns:1fr}
  .grid-3{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-col:last-child{grid-column:auto}
  .float-cta{left:0;right:0;bottom:0;border-radius:0;height:56px;justify-content:center;padding:0;transform:translateY(100%)}
  .float-cta.is-show{transform:none}
  .float-cta:hover{transform:none}
  .footer-bottom{padding-bottom:76px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .brand-text{font-size:17px}
  .brand-mark{width:34px;height:34px;border-radius:10px;font-size:15px}
  .search-panel .inner{padding:12px 16px}
  .notice-empty{padding:40px 18px}
  .cta-inner .acts .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --c-primary:#175A93;
  --c-primary-deep:#0E3D68;
  --c-primary-soft:#E7F0F9;
  --c-accent:#D98A2B;
  --c-accent-soft:#FDF3E4;
  --c-ink:#0F1B2A;
  --c-ink-2:#46586E;
  --c-ink-3:#8798AC;
  --c-bg:#FFFFFF;
  --c-bg-soft:#F4F8FC;
  --c-line:#E3EAF3;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 4px 14px rgba(16,42,74,.06);
  --sh-2:0 12px 32px rgba(16,42,74,.10);
  --sh-cta:0 12px 28px rgba(23,90,147,.28);
  --ease:.25s ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--c-ink-2);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{color:var(--c-ink);margin:0;letter-spacing:-.01em;font-weight:700;line-height:1.3;}
p{margin:0;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--c-primary-deep);}
img{max-width:100%;display:block;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--c-ink);}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(255,255,255,.62);
  -webkit-backdrop-filter:blur(14px) saturate(160%);
  backdrop-filter:blur(14px) saturate(160%);
  border-bottom:1px solid rgba(255,255,255,.5);
  box-shadow:0 2px 12px rgba(16,42,74,.05);
  transition:background var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.site-header.is-stuck{
  background:#fff;
  border-bottom-color:var(--c-line);
  box-shadow:0 6px 20px rgba(16,42,74,.08);
}
.nav-wrap{display:flex;align-items:center;gap:28px;height:76px;transition:height var(--ease);}
.site-header.is-stuck .nav-wrap{height:68px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--c-ink);flex:0 0 auto;}
.brand:hover{color:var(--c-ink);}
.brand-mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--c-primary),var(--c-primary-deep));
  color:#fff;font-size:16px;box-shadow:0 4px 12px rgba(23,90,147,.28);
}
.brand-text{font-size:19px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;}
.nav-main{display:flex;align-items:center;gap:6px;margin-left:8px;}
.nav-link{
  position:relative;padding:8px 14px;border-radius:var(--r-sm);
  font-size:15.5px;font-weight:500;color:var(--c-ink-2);white-space:nowrap;
  transition:color var(--ease),background var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--c-primary);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform var(--ease);
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--c-primary);font-weight:600;background:var(--c-primary-soft);}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.icon-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--c-line);
  background:#fff;color:var(--c-ink-2);display:grid;place-items:center;
  cursor:pointer;transition:all var(--ease);
}
.icon-btn:hover{color:var(--c-primary);border-color:rgba(23,90,147,.35);background:var(--c-primary-soft);}
.burger{display:none;width:42px;height:42px;border:1px solid var(--c-line);background:#fff;border-radius:10px;padding:11px 10px;cursor:pointer;}
.burger span{display:block;height:2px;background:var(--c-ink);border-radius:2px;margin-bottom:4px;transition:var(--ease);}
.burger span:last-child{margin-bottom:0;}
.burger.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.burger.is-open span:nth-child(2){opacity:0;}
.burger.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.search-panel{max-height:0;overflow:hidden;transition:max-height var(--ease);background:rgba(255,255,255,.96);border-top:1px solid transparent;}
.search-panel.is-open{max-height:96px;border-top-color:var(--c-line);}
.search-panel .inner{max-width:1200px;margin:0 auto;padding:16px 24px;display:flex;gap:12px;}
.search-panel input{
  flex:1;height:46px;border-radius:10px;border:1px solid var(--c-line);
  padding:0 16px;background:var(--c-bg-soft);transition:all var(--ease);
}
.search-panel input:focus{outline:none;border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 4px var(--c-primary-soft);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:10px;font-size:15.5px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all var(--ease);
  line-height:1.4;white-space:nowrap;
}
.btn-sm{padding:9px 18px;font-size:14.5px;}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 4px 12px rgba(23,90,147,.22);}
.btn-primary:hover{background:var(--c-primary-deep);color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(23,90,147,.28);}
.btn-outline{background:transparent;color:var(--c-primary);border-color:rgba(23,90,147,.45);}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);border-color:var(--c-primary);}
.btn-ghost{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.6);}
.btn-ghost:hover{background:rgba(255,255,255,.26);color:#fff;}
.btn-lg{padding:15px 32px;font-size:16.5px;}

/* ---------- 通用区块 ---------- */
.section{padding:96px 0;}
.section-soft{background:var(--c-bg-soft);}
.section-white{background:#fff;}
.section-band{background:var(--c-primary-soft);padding:64px 0;}
.section-head{max-width:720px;margin-bottom:48px;}
.section-title{font-size:clamp(24px,3vw,36px);margin-bottom:14px;}
.section-sub{color:var(--c-ink-2);font-size:16.5px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--c-primary);background:var(--c-primary-soft);
  padding:5px 14px;border-radius:var(--r-pill);margin-bottom:16px;letter-spacing:.02em;
}

/* ---------- 通栏大卡 Hero ---------- */
.page-hero{padding:120px 0 64px;background:var(--c-bg-soft);}
.hero-card{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  min-height:440px;display:flex;align-items:flex-end;
  box-shadow:0 18px 48px rgba(16,42,74,.16);
}
.hero-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.hero-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(14,61,104,.94) 0%,rgba(23,90,147,.82) 46%,rgba(23,90,147,.34) 100%);
}
.hero-card-body{position:relative;z-index:2;padding:56px;max-width:760px;color:#fff;}
.hero-card-body h1{
  color:#fff;font-size:clamp(30px,4.2vw,50px);line-height:1.2;margin:14px 0 16px;
}
.hero-card-body p{color:rgba(255,255,255,.9);font-size:17px;max-width:620px;}
.hero-chip{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.35);
  color:#fff;font-size:13px;font-weight:600;padding:5px 14px;border-radius:var(--r-pill);
}
.hero-cta{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap;}
.hero-strip{
  display:flex;flex-wrap:wrap;gap:36px;margin-top:26px;
  padding:20px 26px;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-md);box-shadow:var(--sh-1);
}
.hero-strip .item{display:flex;flex-direction:column;gap:2px;}
.hero-strip .v{font-size:22px;font-weight:700;color:var(--c-primary);}
.hero-strip .k{font-size:13.5px;color:var(--c-ink-3);}

/* ---------- 双列信息块 ---------- */
.mod-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.mod-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:28px;box-shadow:var(--sh-1);position:relative;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.mod-card::before{
  content:"";position:absolute;left:0;top:24px;bottom:24px;width:3px;
  background:var(--c-primary);border-radius:0 3px 3px 0;opacity:.9;
}
.mod-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(23,90,147,.3);}
.mod-card .ico{
  width:46px;height:46px;border-radius:12px;display:grid;place-items:center;
  background:var(--c-primary-soft);color:var(--c-primary);font-size:18px;margin-bottom:16px;
}
.mod-card h3{font-size:20px;font-weight:600;margin-bottom:10px;}
.mod-card p{font-size:15.5px;color:var(--c-ink-2);}
.mod-card .link{
  display:inline-flex;align-items:center;gap:6px;margin-top:14px;
  font-size:14.5px;font-weight:600;
}
.mod-card.is-wide{grid-column:span 2;display:grid;grid-template-columns:1.1fr 1fr;gap:32px;align-items:center;background:var(--c-bg-soft);}
.mod-card.is-wide::before{top:32px;bottom:32px;}
.mod-card.is-wide .media{border-radius:var(--r-md);overflow:hidden;aspect-ratio:16/9;}
.mod-card.is-wide .media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.mod-card.is-wide:hover .media img{transform:scale(1.03);}

/* ---------- 数据窄带 ---------- */
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:left;}
.stat-item{padding-left:18px;border-left:3px solid rgba(23,90,147,.28);}
.stat-item .v{font-size:clamp(26px,3vw,36px);font-weight:700;color:var(--c-primary-deep);line-height:1.2;font-variant-numeric:tabular-nums;}
.stat-item .v small{font-size:15px;font-weight:600;margin-left:2px;}
.stat-item .k{font-size:14.5px;color:var(--c-ink-2);margin-top:4px;}

/* ---------- 场景 2+1 ---------- */
.scene-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.scene-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:26px;box-shadow:var(--sh-1);transition:all var(--ease);
}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(23,90,147,.3);}
.scene-card h3{font-size:19px;margin-bottom:10px;display:flex;align-items:center;gap:10px;}
.scene-card h3 .idx{
  font-size:13px;font-weight:700;color:var(--c-accent);
  background:var(--c-accent-soft);padding:2px 9px;border-radius:var(--r-pill);
}
.scene-card p{font-size:15.5px;}
.scene-wide{
  grid-column:span 2;background:var(--c-primary-deep);color:rgba(255,255,255,.86);
  display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center;padding:34px;
}
.scene-wide h3{color:#fff;font-size:22px;margin-bottom:12px;}
.scene-wide p{color:rgba(255,255,255,.82);}
.scene-wide .media{border-radius:var(--r-md);overflow:hidden;aspect-ratio:16/10;}
.scene-wide .media img{width:100%;height:100%;object-fit:cover;}

/* ---------- 对比条 ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.compare-col{
  border-radius:var(--r-md);padding:30px;border:1px solid var(--c-line);background:#fff;
}
.compare-col h3{font-size:20px;margin-bottom:18px;}
.compare-col--brand{
  background:linear-gradient(180deg,var(--c-primary-soft),#fff 78%);
  border-color:rgba(23,90,147,.32);
  box-shadow:0 10px 30px rgba(23,90,147,.10);
  position:relative;
}
.badge-accent{
  display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:700;
  color:#8a5713;background:var(--c-accent-soft);border:1px solid rgba(217,138,43,.35);
  padding:3px 11px;border-radius:var(--r-pill);margin-bottom:12px;
}
.dot-list li,.check-list li{
  position:relative;padding-left:30px;font-size:15.5px;margin-bottom:12px;line-height:1.75;
}
.dot-list li::before{
  content:"";position:absolute;left:6px;top:11px;width:8px;height:8px;border-radius:50%;
  background:var(--c-ink-3);
}
.check-list li::before{
  content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;left:0;top:1px;color:var(--c-primary);font-size:14px;
}
.compare-col--brand .check-list li::before{color:var(--c-accent);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-acc .accordion-item{
  border:1px solid var(--c-line);border-radius:var(--r-md);margin-bottom:12px;
  background:#fff;overflow:hidden;box-shadow:var(--sh-1);
}
.faq-acc .accordion-button{
  background:#fff;color:var(--c-ink);font-size:17px;font-weight:600;
  padding:20px 24px;display:flex;align-items:center;gap:16px;
  border-radius:var(--r-md) !important;box-shadow:none !important;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--c-primary);background:var(--c-primary-soft);}
.faq-acc .accordion-button::after{
  content:"+";background-image:none;width:28px;height:28px;flex:0 0 28px;
  display:grid;place-items:center;font-size:19px;font-weight:400;color:var(--c-primary);
  border:1px solid rgba(23,90,147,.3);border-radius:50%;
  transition:transform var(--ease),background var(--ease);
  margin-left:auto;line-height:1;
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(45deg);background:#fff;}
.faq-num{
  font-size:14px;font-weight:700;color:var(--c-primary);flex:0 0 auto;
  font-variant-numeric:tabular-nums;
}
.faq-acc .accordion-body{
  padding:4px 24px 22px 64px;color:var(--c-ink-2);font-size:15.5px;line-height:1.85;
}

/* ---------- CTA 带 ---------- */
.cta-band{
  background:linear-gradient(120deg,var(--c-primary-soft),#fff 70%);
  border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
  padding:76px 0;
}
.cta-inner{
  display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;
}
.cta-inner h2{font-size:clamp(24px,3vw,34px);margin-bottom:14px;}
.cta-inner p{font-size:16.5px;margin-bottom:26px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-side{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:26px;box-shadow:var(--sh-1);
}
.cta-side li{
  display:flex;gap:12px;align-items:flex-start;padding:11px 0;
  border-bottom:1px dashed var(--c-line);font-size:15.5px;
}
.cta-side li:last-child{border-bottom:none;}
.cta-side i{color:var(--c-primary);margin-top:5px;}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:26px;bottom:26px;z-index:900;
  display:inline-flex;align-items:center;gap:9px;
  background:var(--c-primary);color:#fff;font-weight:600;font-size:15.5px;
  padding:14px 24px;border-radius:var(--r-pill);box-shadow:var(--sh-cta);
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:all var(--ease);
}
.float-cta:hover{background:var(--c-primary-deep);color:#fff;transform:scale(1.02);}
.float-cta.is-show{opacity:1;visibility:visible;transform:translateY(0);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-bg-soft);border-top:1px solid var(--c-line);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding-bottom:44px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-text{font-size:18px;}
.footer-about p{font-size:15px;color:var(--c-ink-2);max-width:340px;}
.footer-col h4{font-size:15.5px;margin-bottom:16px;color:var(--c-ink);}
.footer-col ul li{margin-bottom:10px;font-size:14.5px;color:var(--c-ink-2);}
.footer-col ul li a{color:var(--c-ink-2);}
.footer-col ul li a:hover{color:var(--c-primary);}
.footer-bottom{
  border-top:1px solid var(--c-line);padding:20px 0 26px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:var(--c-ink-3);
}
.footer-bottom a{color:var(--c-ink-3);}
.footer-bottom a:hover{color:var(--c-primary);}

/* ---------- 进入视口动效 ---------- */
.js-on .reveal{opacity:0;transform:translateY(16px);transition:opacity .55s ease,transform .55s ease;}
.js-on .reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (min-width:1400px){
  .container{max-width:1280px;}
}
@media (max-width:1199px){
  .nav-main{gap:0;}
  .nav-link{padding:8px 11px;font-size:15px;}
}
@media (max-width:991px){
  .section{padding:72px 0;}
  .page-hero{padding:104px 0 48px;}
  .nav-main{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;border-bottom:1px solid var(--c-line);
    padding:14px 24px 20px;box-shadow:0 16px 32px rgba(16,42,74,.10);
    display:none;
  }
  .nav-main.is-open{display:flex;}
  .nav-link{padding:12px 12px;font-size:16px;}
  .nav-link::after{display:none;}
  .burger{display:block;}
  .nav-actions .btn-sm{display:none;}
  .hero-card{min-height:380px;}
  .hero-card-body{padding:36px;}
  .mod-grid{grid-template-columns:1fr;}
  .mod-card.is-wide{grid-column:span 1;grid-template-columns:1fr;}
  .stat-row{grid-template-columns:repeat(2,1fr);}
  .scene-grid{grid-template-columns:1fr;}
  .scene-wide{grid-column:span 1;grid-template-columns:1fr;}
  .compare{grid-template-columns:1fr;}
  .cta-inner{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .section-band{padding:48px 0;}
  .brand-text{font-size:17px;}
  .page-hero{padding:96px 0 40px;}
  .hero-card{min-height:330px;border-radius:16px;}
  .hero-card-body{padding:26px 22px;}
  .hero-card-body p{font-size:15.5px;}
  .hero-cta{gap:10px;margin-top:22px;}
  .hero-cta .btn{width:100%;}
  .hero-strip{gap:20px;padding:16px 18px;}
  .hero-strip .v{font-size:19px;}
  .stat-row{grid-template-columns:1fr 1fr;gap:18px;}
  .faq-acc .accordion-button{padding:16px 18px;font-size:16px;}
  .faq-acc .accordion-body{padding:2px 18px 18px 48px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .float-cta{
    right:0;left:0;bottom:0;border-radius:0;justify-content:center;
    padding:16px 20px;font-size:16px;
  }
  .float-cta.is-show{transform:none;}
}
@media (max-width:520px){
  body{font-size:16px;}
  .hero-card-body h1{font-size:30px;}
  .mod-card{padding:22px;}
  .scene-wide{padding:24px;}
  .cta-side{padding:20px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category3 */
:root{
  --c-primary:#175A93;
  --c-primary-deep:#0E3D68;
  --c-primary-soft:#E7F0F9;
  --c-accent:#D98A2B;
  --c-accent-soft:#FDF3E4;
  --c-ink:#0F1B2A;
  --c-ink-2:#46586E;
  --c-ink-3:#8798AC;
  --c-bg:#FFFFFF;
  --c-bg-soft:#F4F8FC;
  --c-line:#E3EAF3;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 4px 14px rgba(16,42,74,.06);
  --sh-2:0 12px 32px rgba(16,42,74,.10);
  --sh-btn:0 12px 28px rgba(23,90,147,.28);
  --ff:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--ff);
  font-size:16.5px;
  line-height:1.85;
  color:var(--c-ink-2);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5{color:var(--c-ink);font-weight:700;letter-spacing:-.01em;margin:0;}
h1{font-size:clamp(30px,4.2vw,50px);line-height:1.22;}
h2{font-size:clamp(24px,3vw,36px);line-height:1.3;}
h3{font-size:21px;line-height:1.4;font-weight:600;}
p{margin:0 0 1em;}
a{color:var(--c-primary);text-decoration:none;transition:color .25s ease;}
a:hover{color:var(--c-primary-deep);}
img{max-width:100%;display:block;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(23,90,147,.45);outline-offset:2px;border-radius:6px;}
.container{max-width:var(--container,1200px);width:100%;margin:0 auto;padding:0 24px;}
@media (min-width:1400px){.container{max-width:1280px;}}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:10px;padding:12px 24px;font-weight:600;font-size:15.5px;border:1px solid transparent;cursor:pointer;transition:all .25s ease;line-height:1.2;}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 18px rgba(23,90,147,.18);}
.btn-primary:hover{background:var(--c-primary-deep);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(23,90,147,.24);}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:rgba(23,90,147,.45);}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);border-color:var(--c-primary);transform:translateY(-2px);}
.btn-outline-light{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.75);}
.btn-outline-light:hover{background:rgba(255,255,255,.95);color:var(--c-primary-deep);}
.btn-sm{padding:9px 18px;font-size:14.5px;border-radius:9px;}
.btn-block{width:100%;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(255,255,255,.62);
  backdrop-filter:blur(14px) saturate(160%);
  -webkit-backdrop-filter:blur(14px) saturate(160%);
  border-bottom:1px solid rgba(255,255,255,.5);
  box-shadow:0 2px 12px rgba(16,42,74,.04);
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-stuck{
  background:#fff;
  border-bottom:1px solid var(--c-line);
  box-shadow:0 6px 20px rgba(16,42,74,.08);
}
.nav-wrap{display:flex;align-items:center;gap:28px;height:76px;transition:height .25s ease;}
.site-header.is-stuck .nav-wrap{height:66px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:11px;
  background:linear-gradient(140deg,var(--c-primary) 0%,#2E7CB8 100%);
  color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:16px;
  box-shadow:0 5px 14px rgba(23,90,147,.28);
}
.brand-text{font-size:18.5px;font-weight:700;color:var(--c-ink);letter-spacing:-.01em;}
.nav-main{display:flex;align-items:center;gap:6px;margin-left:12px;}
.nav-link{
  position:relative;padding:8px 14px;border-radius:9px;font-size:15.5px;font-weight:500;color:var(--c-ink-2);
  transition:color .25s ease,background .25s ease;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-link:hover{color:var(--c-primary);background:rgba(231,240,249,.6);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--c-primary);font-weight:600;background:var(--c-primary-soft);}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.icon-btn{
  width:40px;height:40px;border-radius:11px;border:1px solid var(--c-line);background:#fff;
  color:var(--c-ink-2);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:all .25s ease;
}
.icon-btn:hover{color:var(--c-primary);border-color:rgba(23,90,147,.35);background:var(--c-primary-soft);}
.burger{
  display:none;width:42px;height:42px;border-radius:11px;border:1px solid var(--c-line);background:#fff;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;
}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-ink-2);transition:all .25s ease;}
.burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.burger.is-open span:nth-child(2){opacity:0;}
.burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.search-panel{
  max-height:0;overflow:hidden;transition:max-height .3s ease;background:#fff;border-top:0 solid var(--c-line);
}
.search-panel.is-open{max-height:110px;border-top:1px solid var(--c-line);}
.search-panel .inner{display:flex;gap:12px;padding:16px 24px;max-width:1200px;margin:0 auto;}
.search-panel input[type="search"]{
  flex:1;height:48px;border-radius:10px;border:1px solid var(--c-line);padding:0 16px;background:var(--c-bg-soft);
  transition:all .25s ease;
}
.search-panel input[type="search"]:focus{outline:none;border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 4px var(--c-primary-soft);}
.nav-mask{
  position:fixed;inset:0;background:rgba(15,27,42,.42);opacity:0;visibility:hidden;transition:all .25s ease;z-index:1040;
}
.nav-mask.is-open{opacity:1;visibility:visible;}

/* ---------- 页面头部 ---------- */
.page-hero{
  position:relative;padding:150px 0 72px;overflow:hidden;
  background:linear-gradient(170deg,#F7FBFF 0%,#EAF3FB 55%,#F4F8FC 100%);
}
.page-hero::before{
  content:"";position:absolute;right:-6%;top:-14%;width:56%;height:140%;opacity:.24;
  background:url("/assets/images/backpic/back-3.png") center/cover no-repeat;
  -webkit-mask-image:linear-gradient(100deg,transparent 0%,rgba(0,0,0,.95) 65%);
  mask-image:linear-gradient(100deg,transparent 0%,rgba(0,0,0,.95) 65%);
  filter:blur(1.5px);
}
.page-hero .container{position:relative;z-index:2;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--c-ink-3);margin-bottom:20px;}
.crumb a{color:var(--c-ink-3);}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:#C3CFDD;}
.crumb .current{color:var(--c-primary);font-weight:600;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:6px 15px;border-radius:var(--r-pill);
  background:var(--c-accent-soft);color:#A5671B;font-size:13.5px;font-weight:600;margin-bottom:18px;
}
.page-hero h1{max-width:900px;}
.hero-lead{margin-top:20px;max-width:720px;font-size:17.5px;line-height:1.8;color:var(--c-ink-2);}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--c-line);color:var(--c-ink-2);font-size:13.5px;font-weight:500;
  box-shadow:0 2px 8px rgba(16,42,74,.04);
}
.tag i{color:var(--c-primary);font-size:12px;}

/* ---------- 锚点子导航 ---------- */
.anchor-bar{position:sticky;top:76px;z-index:40;padding:6px 0 0;}
.anchor-nav{
  display:flex;flex-wrap:wrap;gap:8px;padding:10px;background:rgba(255,255,255,.9);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border:1px solid var(--c-line);border-radius:var(--r-pill);box-shadow:var(--sh-1);
}
.anchor-nav a{
  padding:8px 18px;border-radius:var(--r-pill);font-size:14.5px;font-weight:600;color:var(--c-ink-2);
  transition:all .25s ease;
}
.anchor-nav a:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);}

/* ---------- 通用区块 ---------- */
.section{padding:96px 0;}
.section.soft{background:var(--c-bg-soft);}
.section.tight{padding:72px 0;}
.sec-head{max-width:760px;margin-bottom:48px;}
.sec-eyebrow{
  display:inline-block;font-size:13.5px;font-weight:700;letter-spacing:.04em;color:var(--c-primary);
  background:var(--c-primary-soft);padding:5px 14px;border-radius:var(--r-pill);margin-bottom:16px;
}
.sec-head p{margin-top:16px;font-size:16.5px;color:var(--c-ink-2);}

/* ---------- 提示条 ---------- */
.notice-band{
  display:flex;gap:18px;align-items:flex-start;padding:24px 28px;border-radius:var(--r-lg);
  background:var(--c-accent-soft);border:1px solid #F2DFC0;
}
.notice-band .ico{
  flex:0 0 44px;width:44px;height:44px;border-radius:13px;background:#fff;color:var(--c-accent);
  display:inline-flex;align-items:center;justify-content:center;font-size:18px;box-shadow:0 4px 12px rgba(217,138,43,.18);
}
.notice-band h3{font-size:17.5px;margin-bottom:6px;}
.notice-band p{margin:0;font-size:15.5px;color:#7A5A29;}
.notice-band .mini{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px;}
.notice-band .mini span{
  background:#fff;border-radius:var(--r-pill);padding:5px 13px;font-size:13.5px;color:#8A6524;border:1px solid #F2DFC0;
}

/* ---------- 时间线 ---------- */
.timeline{position:relative;max-width:960px;}
.tl-item{position:relative;display:grid;grid-template-columns:68px 1fr;gap:26px;padding-bottom:28px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:33px;top:68px;bottom:0;width:2px;
  background:linear-gradient(180deg,var(--c-line) 0%,rgba(227,234,243,.35) 100%);
}
.tl-item:last-child::before{display:none;}
.tl-mark{
  width:68px;height:68px;border-radius:50%;background:#fff;border:2px solid var(--c-primary-soft);
  color:var(--c-primary);font-weight:700;font-size:19px;font-variant-numeric:tabular-nums;
  display:flex;align-items:center;justify-content:center;box-shadow:var(--sh-1);position:relative;z-index:2;
  transition:all .25s ease;
}
.tl-item:hover .tl-mark{border-color:var(--c-primary);background:var(--c-primary);color:#fff;box-shadow:0 10px 24px rgba(23,90,147,.28);}
.tl-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);padding:26px 28px;
  box-shadow:var(--sh-1);transition:all .25s ease;
}
.tl-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(23,90,147,.3);}
.tl-card h3{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:10px;font-size:19.5px;}
.tl-card h3 .pill{
  font-size:12.5px;font-weight:600;color:var(--c-primary);background:var(--c-primary-soft);
  border-radius:var(--r-pill);padding:3px 11px;
}
.tl-card p{margin:0;font-size:16px;}
.tl-card ul{margin-top:14px;display:grid;gap:8px;}
.tl-card ul li{position:relative;padding-left:22px;font-size:15.5px;color:var(--c-ink-2);}
.tl-card ul li::before{
  content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;font-size:11px;color:var(--c-primary);
  position:absolute;left:0;top:7px;
}

/* ---------- 现象速查卡片 ---------- */
.spot-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.spot-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);padding:26px;
  box-shadow:var(--sh-1);transition:all .25s ease;display:flex;flex-direction:column;
}
.spot-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(23,90,147,.3);}
.spot-card.is-main{grid-column:span 2;}
.spot-ico{
  width:46px;height:46px;border-radius:13px;background:var(--c-primary-soft);color:var(--c-primary);
  display:inline-flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:16px;
}
.spot-card h3{font-size:18.5px;margin-bottom:10px;}
.spot-card p{font-size:15.5px;margin:0;}
.spot-card .meta{
  margin-top:16px;padding-top:14px;border-top:1px dashed var(--c-line);
  font-size:13.5px;color:var(--c-ink-3);display:flex;align-items:center;gap:8px;
}
.spot-card .meta i{color:var(--c-accent);}
.spot-card.is-cta{
  background:linear-gradient(150deg,var(--c-primary) 0%,var(--c-primary-deep) 100%);
  border-color:transparent;justify-content:center;
}
.spot-card.is-cta h3,.spot-card.is-cta p{color:#fff;}
.spot-card.is-cta p{color:rgba(255,255,255,.82);font-size:15px;}
.spot-card.is-cta .spot-ico{background:rgba(255,255,255,.16);color:#fff;}

/* ---------- 双栏内链 ---------- */
.link-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;}
.link-card{
  display:grid;grid-template-columns:190px 1fr;gap:0;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);transition:all .25s ease;color:inherit;
}
.link-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(23,90,147,.3);color:inherit;}
.link-card .thumb{overflow:hidden;height:100%;min-height:170px;}
.link-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease;}
.link-card:hover .thumb img{transform:scale(1.04);}
.link-card .body{padding:24px 26px;display:flex;flex-direction:column;justify-content:center;}
.link-card .body h3{font-size:19px;margin-bottom:10px;}
.link-card .body p{font-size:15px;margin:0;}
.link-card .go{margin-top:14px;font-size:14.5px;font-weight:600;color:var(--c-primary);display:inline-flex;align-items:center;gap:7px;}
.link-card .go i{transition:transform .25s ease;}
.link-card:hover .go i{transform:translateX(4px);}

/* ---------- FAQ ---------- */
.faq-list{max-width:920px;}
.faq-list .accordion-item{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md)!important;
  margin-bottom:12px;overflow:hidden;box-shadow:0 2px 10px rgba(16,42,74,.04);
}
.faq-list .accordion-button{
  background:#fff;color:var(--c-ink);font-weight:600;font-size:17px;padding:20px 24px;
  display:flex;align-items:center;gap:14px;box-shadow:none!important;border:0;
}
.faq-list .accordion-button:not(.collapsed){background:var(--c-primary-soft);color:var(--c-primary-deep);}
.faq-num{
  flex:0 0 auto;font-variant-numeric:tabular-nums;font-weight:700;color:var(--c-primary);
  font-size:15px;letter-spacing:.02em;
}
.faq-q{flex:1;text-align:left;}
.faq-list .accordion-button::after{
  content:"+";background-image:none!important;font-size:22px;font-weight:400;line-height:1;color:var(--c-primary);
  width:22px;height:22px;display:flex;align-items:center;justify-content:center;
  transition:transform .3s ease;transform:rotate(0deg);
}
.faq-list .accordion-button:not(.collapsed)::after{transform:rotate(45deg);}
.faq-list .accordion-body{padding:0 24px 22px 62px;font-size:16px;color:var(--c-ink-2);border-top:0;}

/* ---------- CTA 通带 ---------- */
.cta-band{
  background:linear-gradient(120deg,#E9F2FA 0%,#F6FAFE 60%,#FDF3E4 100%);
  border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
  padding:80px 0;
}
.cta-inner{display:grid;grid-template-columns:1.4fr 1fr;gap:36px;align-items:center;}
.cta-inner h2{max-width:560px;}
.cta-inner p{margin:16px 0 0;max-width:560px;font-size:16.5px;}
.cta-side{display:flex;flex-direction:column;gap:14px;}
.cta-side .row2{display:flex;flex-wrap:wrap;gap:12px;}
.cta-meta{
  display:flex;flex-wrap:wrap;gap:18px;margin-top:8px;font-size:14.5px;color:var(--c-ink-2);
}
.cta-meta span{display:inline-flex;align-items:center;gap:8px;}
.cta-meta i{color:var(--c-primary);}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:26px;bottom:26px;z-index:900;display:inline-flex;align-items:center;gap:9px;
  padding:14px 24px;border-radius:var(--r-pill);background:var(--c-primary);color:#fff;font-weight:600;
  font-size:15px;box-shadow:var(--sh-btn);opacity:0;visibility:hidden;transform:translateY(14px);
  transition:all .3s ease;
}
.float-cta.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{background:var(--c-primary-deep);color:#fff;transform:scale(1.02);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-bg-soft);border-top:1px solid var(--c-line);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-about p{font-size:15px;color:var(--c-ink-2);margin:0;max-width:340px;}
.footer-col h4{font-size:15.5px;margin-bottom:16px;color:var(--c-ink);}
.footer-col ul{display:grid;gap:11px;}
.footer-col li a,.footer-col li span{font-size:15px;color:var(--c-ink-2);}
.footer-col li a:hover{color:var(--c-primary);}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--c-line);padding:22px 0;display:flex;flex-wrap:wrap;
  justify-content:space-between;gap:12px;font-size:13.5px;color:var(--c-ink-3);
}
.footer-bottom a{color:var(--c-ink-3);}
.footer-bottom a:hover{color:var(--c-primary);}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .6s ease,transform .6s ease;}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
  *{animation:none!important;transition:none!important;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .spot-grid{grid-template-columns:repeat(2,1fr);}
  .spot-card.is-main{grid-column:span 2;}
}
@media (max-width:992px){
  .nav-main{
    position:fixed;top:0;right:0;width:min(320px,84vw);height:100vh;background:#fff;z-index:1050;
    flex-direction:column;align-items:stretch;gap:6px;padding:88px 20px 28px;margin:0;
    transform:translateX(100%);transition:transform .3s ease;box-shadow:-10px 0 40px rgba(16,42,74,.14);
    overflow-y:auto;
  }
  .nav-main.is-open{transform:translateX(0);}
  .nav-link{padding:14px 16px;font-size:16px;}
  .nav-link::after{display:none;}
  .burger{display:flex;}
  .nav-actions .btn{display:none;}
  .section{padding:72px 0;}
  .page-hero{padding:130px 0 60px;}
  .anchor-bar{top:66px;}
  .cta-inner{grid-template-columns:1fr;}
  .link-cards{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .section{padding:56px 0;}
  .page-hero{padding:120px 0 48px;}
  .hero-lead{font-size:16px;}
  .spot-grid{grid-template-columns:1fr;}
  .spot-card.is-main{grid-column:span 1;}
  .tl-item{grid-template-columns:52px 1fr;gap:16px;}
  .tl-mark{width:52px;height:52px;font-size:16px;}
  .tl-item::before{left:25px;top:52px;}
  .tl-card{padding:22px;}
  .link-card{grid-template-columns:1fr;}
  .link-card .thumb{min-height:190px;}
  .faq-list .accordion-button{font-size:16px;padding:16px 18px;gap:10px;}
  .faq-list .accordion-body{padding:0 18px 20px 48px;font-size:15.5px;}
  .float-cta{
    left:14px;right:14px;bottom:14px;justify-content:center;border-radius:14px;height:56px;padding:0 18px;
  }
  .footer-grid{grid-template-columns:1fr;}
  .cta-band{padding:64px 0;}
}
@media (max-width:520px){
  .container{padding:0 18px;}
  .hero-tags{gap:8px;}
  .tag{font-size:13px;padding:5px 12px;}
  .cta-side .row2 .btn{width:100%;}
}