/* roulang page: index */
:root{
  --bg-0:#070D17;
  --bg-1:#0B1524;
  --bg-2:#101E33;
  --glass:rgba(255,255,255,.045);
  --glass-strong:rgba(255,255,255,.07);
  --glass-border:rgba(120,190,255,.16);
  --primary:#14C8C0;
  --primary-deep:#0E8F92;
  --accent:#F2A93B;
  --violet:#5B6CFF;
  --text:#EAF2FB;
  --text-2:#A9B8CC;
  --text-3:#6F8098;
  --ink:#06101E;
  --ok:#2ED47A;
  --warn:#F2A93B;
  --danger:#FF5C6A;
  --info:#19B6E8;
  --r-card:16px;
  --r-panel:20px;
  --r-btn:12px;
  --shadow-card:0 8px 24px rgba(4,12,24,.45);
  --shadow-glow:0 0 0 1px rgba(20,200,192,.35),0 8px 30px rgba(20,200,192,.22);
  --container:1200px;
  --pad-x:32px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:linear-gradient(rgba(120,190,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(120,190,255,.05) 1px,transparent 1px);
  background-size:24px 24px;
  -webkit-mask-image:radial-gradient(1100px 640px at 50% 0%,#000 15%,transparent 78%);
  mask-image:radial-gradient(1100px 640px at 50% 0%,#000 15%,transparent 78%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:radial-gradient(680px 420px at 10% -6%,rgba(20,200,192,.09),transparent 70%),
             radial-gradient(560px 380px at 94% 6%,rgba(91,108,255,.07),transparent 72%);
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.site{position:relative;z-index:1}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--pad-x)}
.icon{width:20px;height:20px;flex:none;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.icon-sm{width:16px;height:16px}
.icon-lg{width:26px;height:26px}

/* 顶部信息条 */
.topbar{background:linear-gradient(90deg,rgba(20,200,192,.10),rgba(91,108,255,.08));border-bottom:1px solid rgba(120,190,255,.10)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:36px;font-size:13px;color:var(--text-2)}
.topbar-left{display:flex;align-items:center;gap:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.dot-live{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px rgba(46,212,122,.14);flex:none}
.topbar-link{color:var(--primary);white-space:nowrap;display:inline-flex;align-items:center;gap:6px;transition:gap .2s}
.topbar-link:hover{gap:10px}

/* 导航 */
.site-header{position:sticky;top:0;z-index:70;background:rgba(7,13,23,.80);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--glass-border);transition:box-shadow .25s,background .25s}
.site-header.is-stuck{background:rgba(7,13,23,.94);box-shadow:0 12px 34px rgba(3,9,18,.66)}
.brand-row{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:68px;padding:10px 0}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand-mark{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(20,200,192,.22),rgba(91,108,255,.18));border:1px solid rgba(20,200,192,.38);color:var(--primary);box-shadow:0 0 22px rgba(20,200,192,.18);flex:none}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-name{font-size:17px;font-weight:700;color:var(--text);letter-spacing:.01em;white-space:nowrap}
.brand-sub{font-size:12px;color:var(--text-3);letter-spacing:.06em;white-space:nowrap}
.brand-actions{display:flex;align-items:center;gap:14px}
.icon-btn{width:42px;height:42px;display:grid;place-items:center;border-radius:12px;background:var(--glass);border:1px solid var(--glass-border);color:var(--text-2);cursor:pointer;transition:.22s}
.icon-btn:hover{color:var(--primary);border-color:rgba(20,200,192,.4);background:var(--glass-strong)}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--text-2);transition:color .2s,gap .2s}
.text-link:hover{color:var(--primary);gap:10px}
.nav-toggle{display:none}
.search-panel{max-height:0;overflow:hidden;transition:max-height .3s ease;border-top:1px solid transparent}
.search-panel.is-open{max-height:96px;border-top-color:rgba(120,190,255,.12)}
.search-row{display:flex;gap:12px;align-items:center;padding:14px 0}
.search-row input{flex:1;background:rgba(255,255,255,.04);border:1px solid var(--glass-border);border-radius:12px;padding:12px 16px;font-size:14px;outline:none;transition:.2s}
.search-row input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(20,200,192,.16)}
.channel-row{border-top:1px solid rgba(120,190,255,.10);}
.channel-inner{display:flex;align-items:center;gap:10px;padding:10px 0;overflow-x:auto;scrollbar-width:none}
.channel-inner::-webkit-scrollbar{display:none}
.chip{position:relative;display:inline-flex;align-items:center;gap:7px;padding:9px 16px;border-radius:999px;border:1px solid var(--glass-border);background:transparent;color:var(--text-2);font-size:14px;white-space:nowrap;transition:.22s;cursor:pointer}
.chip:hover{color:var(--text);background:var(--glass)}
.chip.is-active{color:var(--primary);background:rgba(20,200,192,.09);border-color:rgba(20,200,192,.36)}
.chip.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:-11px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--primary),var(--violet));box-shadow:0 0 10px rgba(20,200,192,.6)}

/* 移动抽屉 */
.drawer{position:fixed;inset:0;z-index:90;background:rgba(6,11,20,.97);backdrop-filter:blur(18px);transform:translateX(102%);transition:transform .32s cubic-bezier(.4,0,.2,1);padding:22px;display:flex;flex-direction:column;gap:8px;overflow-y:auto}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--glass-border);margin-bottom:10px}
.drawer-link{display:flex;align-items:center;justify-content:space-between;min-height:52px;padding:0 16px;border-radius:14px;border:1px solid var(--glass-border);background:var(--glass);color:var(--text-2);font-size:15px;transition:.2s}
.drawer-link:hover,.drawer-link.is-active{color:var(--primary);border-color:rgba(20,200,192,.4);background:rgba(20,200,192,.08)}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:0;cursor:pointer;transition:transform .18s ease,box-shadow .24s ease,background .22s ease,color .22s ease,border-color .22s ease}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-deep));color:var(--ink);box-shadow:var(--shadow-glow)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 0 0 1px rgba(20,200,192,.5),0 14px 38px rgba(20,200,192,.34);filter:brightness(1.06)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(20,200,192,.3),0 5px 16px rgba(20,200,192,.2)}
.btn-primary[disabled]{opacity:.45;box-shadow:none;cursor:not-allowed;filter:none}
.btn-ghost{background:var(--glass);border:1px solid var(--glass-border);color:var(--text)}
.btn-ghost:hover{background:var(--glass-strong);border-color:rgba(20,200,192,.42);color:#fff}
.btn-sm{height:38px;padding:0 18px;font-size:14px;border-radius:10px}
.btn-block{width:100%}
.arrow-link{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;transition:gap .2s}
.arrow-link:hover{gap:11px}

/* 通用板块 */
.section{padding:96px 0}
.section-alt{background:linear-gradient(180deg,rgba(11,21,36,.65),rgba(7,13,23,0))}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:38px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.14em;color:var(--primary);text-transform:uppercase;margin-bottom:12px}
.eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--primary),transparent)}
.section-title{font-size:clamp(24px,2.6vw,32px);font-weight:700}
.section-desc{margin-top:12px;color:var(--text-2);font-size:15px;max-width:640px}

/* Hero */
.hero{position:relative;overflow:hidden;padding:72px 0 84px}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.34}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,13,23,.72),rgba(7,13,23,.94) 62%,var(--bg-0))}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr 1fr;gap:52px;align-items:center}
.hero h1{font-size:clamp(30px,4vw,46px);font-weight:700;line-height:1.25}
.hero h1 .hl{color:var(--primary);text-shadow:0 0 28px rgba(20,200,192,.35)}
.hero-sub{margin-top:20px;font-size:19px;color:var(--text-2);line-height:1.8;max-width:620px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-micro{display:flex;flex-wrap:wrap;gap:26px;margin-top:34px;padding-top:26px;border-top:1px solid rgba(120,190,255,.13)}
.micro-item{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text-2)}
.micro-item .icon{color:var(--primary)}
.hero-visual{position:relative;min-height:400px;border-radius:var(--r-panel)}
.hero-photo{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;border-radius:var(--r-panel);opacity:.55}
.hero-visual::before{content:"";position:absolute;inset:0;border-radius:var(--r-panel);background:linear-gradient(160deg,rgba(11,21,36,.45),rgba(7,13,23,.9));z-index:1}
.hero-panel{position:relative;z-index:2;background:var(--glass);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border:1px solid var(--glass-border);border-radius:var(--r-panel);padding:26px;box-shadow:var(--shadow-card)}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:20px}
.panel-title{font-size:15px;font-weight:600;color:var(--text)}
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:8px;font-size:12px;letter-spacing:.04em;background:rgba(46,212,122,.12);color:var(--ok);border:1px solid rgba(46,212,122,.3)}
.badge-accent{background:rgba(242,169,59,.12);color:var(--accent);border-color:rgba(242,169,59,.3)}
.badge-info{background:rgba(25,182,232,.12);color:var(--info);border-color:rgba(25,182,232,.3)}
.meter-row{padding:14px 0;border-bottom:1px dashed rgba(120,190,255,.13)}
.meter-row:last-of-type{border-bottom:0}
.meter-top{display:flex;align-items:baseline;justify-content:space-between;gap:12px;font-size:14px;color:var(--text-2)}
.meter-val{font-size:19px;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums}
.meter-track{margin-top:9px;height:6px;border-radius:4px;background:rgba(120,190,255,.12);overflow:hidden}
.meter-fill{height:100%;border-radius:4px;background:linear-gradient(90deg,var(--primary),var(--violet))}
.panel-note{margin-top:18px;font-size:12px;color:var(--text-3);line-height:1.7}

/* 指标卡 */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.metric{background:var(--glass);border:1px solid var(--glass-border);border-radius:var(--r-card);padding:24px;transition:border-color .22s,transform .22s}
.metric:hover{border-color:rgba(20,200,192,.34);transform:translateY(-3px)}
.metric-icon{color:var(--primary);margin-bottom:14px}
.metric-num{display:flex;align-items:baseline;gap:6px;font-variant-numeric:tabular-nums}
.metric-num strong{font-size:36px;font-weight:700;color:var(--primary);line-height:1.1;letter-spacing:-.02em}
.metric-num span{font-size:14px;color:var(--text-3)}
.metric-label{margin-top:8px;font-size:13px;color:var(--text-2)}
.metric-trend{margin-top:16px;height:4px;border-radius:3px;background:rgba(120,190,255,.12);overflow:hidden}
.metric-trend i{display:block;height:100%;border-radius:3px;background:linear-gradient(90deg,var(--primary),var(--accent))}

/* 服务矩阵 */
.service-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.service-card{position:relative;background:var(--glass);border:1px solid var(--glass-border);border-radius:var(--r-card);padding:26px;transition:transform .22s,border-color .22s,box-shadow .28s;overflow:hidden}
.service-card:hover{transform:translateY(-3px);border-color:rgba(20,200,192,.35);box-shadow:0 12px 34px rgba(20,200,192,.14)}
.service-card h3{font-size:19px;font-weight:600;margin-bottom:10px}
.service-card p{font-size:14px;color:var(--text-2);line-height:1.8}
.service-lead{grid-column:span 6;padding:0;display:flex;flex-direction:column}
.service-lead .media{position:relative;aspect-ratio:16/9;background:linear-gradient(135deg,#101E33,#0B1524);overflow:hidden;border-radius:var(--r-card) var(--r-card) 0 0}
.service-lead .media img{width:100%;height:100%;object-fit:cover}
.service-lead .body{padding:24px 26px 26px}
.service-sm{grid-column:span 3}
.service-guide{grid-column:span 6;display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:14px;border-style:dashed;border-color:rgba(20,200,192,.32);background:linear-gradient(135deg,rgba(20,200,192,.07),rgba(91,108,255,.05))}
.service-guide .icon-lg{color:var(--primary)}
.service-list{margin-top:14px;display:grid;gap:8px}
.service-list li{position:relative;padding-left:18px;font-size:13px;color:var(--text-3)}
.service-list li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:2px;background:var(--primary);opacity:.8}
.card-foot{margin-top:18px}

/* 对比 */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.compare-col{border-radius:var(--r-card);padding:26px;background:var(--glass);border:1px solid var(--glass-border)}
.compare-col.is-alt{border-color:rgba(20,200,192,.32);box-shadow:0 0 0 1px rgba(20,200,192,.12),0 10px 30px rgba(20,200,192,.1)}
.compare-col h3{font-size:17px;margin-bottom:6px}
.compare-col .col-sub{font-size:13px;color:var(--text-3);margin-bottom:20px}
.compare-row{padding:14px 0;border-bottom:1px dashed rgba(120,190,255,.13)}
.compare-row:last-child{border-bottom:0}
.compare-name{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:14px;color:var(--text-2)}
.compare-name b{font-variant-numeric:tabular-nums;color:var(--text)}
.compare-col.is-alt .compare-name b{color:var(--primary)}
.compare-bar{margin-top:9px;height:6px;border-radius:4px;background:rgba(120,190,255,.1);overflow:hidden}
.compare-bar i{display:block;height:100%;border-radius:4px;background:linear-gradient(90deg,rgba(120,190,255,.5),rgba(120,190,255,.25))}
.compare-col.is-alt .compare-bar i{background:linear-gradient(90deg,var(--primary),var(--accent))}

/* 资讯列表 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{display:flex;flex-direction:column;background:var(--glass);border:1px solid var(--glass-border);border-radius:var(--r-card);overflow:hidden;transition:transform .22s,border-color .22s,box-shadow .28s}
.news-card:hover{transform:translateY(-3px);border-color:rgba(20,200,192,.35);box-shadow:0 14px 34px rgba(20,200,192,.13)}
.news-media{position:relative;display:block;aspect-ratio:16/9;background:linear-gradient(135deg,#101E33,#0B1524)}
.news-media img{width:100%;height:100%;object-fit:cover}
.news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-title{font-size:17px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-title a{transition:color .2s}
.news-title a:hover{color:var(--primary)}
.news-desc{font-size:14px;color:var(--text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{margin-top:auto;padding-top:14px;border-top:1px solid rgba(120,190,255,.1);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3)}
.empty-state{grid-column:1/-1;padding:48px 24px;text-align:center;border-radius:var(--r-card);border:1px solid var(--glass-border);background:var(--glass);color:var(--text-2);display:flex;flex-direction:column;align-items:center;gap:14px}
.empty-state .icon{color:var(--primary)}
.img-fail{display:none !important}

/* FAQ */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}
.faq-item{background:var(--glass);border:1px solid var(--glass-border);border-radius:var(--r-card);overflow:hidden;transition:border-color .25s,box-shadow .28s}
.faq-item[open]{border-color:rgba(20,200,192,.45);box-shadow:0 0 0 1px rgba(20,200,192,.18),0 12px 30px rgba(20,200,192,.12)}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;cursor:pointer;font-size:16px;font-weight:600;list-style:none}
.faq-q::-webkit-details-marker{display:none}
.faq-q .icon{color:var(--primary);transition:transform .26s}
.faq-item[open] .faq-q .icon{transform:rotate(45deg)}
.faq-a{padding:0 22px 20px;font-size:14px;color:var(--text-2);line-height:1.85}

/* 表单 */
.form-shell{display:grid;grid-template-columns:1.45fr 1fr;gap:32px;align-items:start}
.form-card{background:var(--glass);border:1px solid var(--glass-border);border-radius:var(--r-panel);padding:32px;backdrop-filter:blur(14px)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.field{display:flex;flex-direction:column;gap:8px}
.field-full{grid-column:1/-1}
.field label{font-size:14px;color:var(--text-2)}
.field input,.field select,.field textarea{width:100%;background:rgba(255,255,255,.04);border:1px solid var(--glass-border);border-radius:12px;padding:13px 16px;font-size:15px;outline:none;transition:border-color .2s,box-shadow .2s,background .2s}
.field textarea{min-height:118px;resize:vertical;line-height:1.8}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(20,200,192,.17);background:rgba(255,255,255,.06)}
.field select option{background:#0B1524;color:var(--text)}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--text-2);line-height:1.75}
.check-row input{width:17px;height:17px;margin-top:3px;accent-color:var(--primary);flex:none}
.form-alert{display:none;margin-bottom:20px;padding:14px 16px;border-radius:12px;border-left:3px solid var(--ok);background:rgba(46,212,122,.1);color:var(--ok);font-size:14px}
.form-alert.is-show{display:block}
.trust-card{background:var(--glass);border:1px solid var(--glass-border);border-radius:var(--r-panel);padding:28px}
.trust-list{display:grid;gap:16px;margin-top:18px}
.trust-list li{display:flex;gap:12px;font-size:14px;color:var(--text-2);line-height:1.8}
.trust-list .icon{color:var(--primary);margin-top:3px}
.contact-block{margin-top:24px;padding-top:22px;border-top:1px solid rgba(120,190,255,.13);display:grid;gap:12px;font-size:14px;color:var(--text-2)}
.contact-block span{display:flex;align-items:center;gap:10px}
.contact-block .icon{color:var(--primary)}

/* 页脚 */
.site-footer{background:linear-gradient(180deg,rgba(11,21,36,.4),rgba(6,11,20,.95));border-top:1px solid var(--glass-border);padding:72px 0 0;margin-top:24px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:48px}
.footer-title{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px}
.footer-links{display:grid;gap:11px;font-size:14px;color:var(--text-2)}
.footer-links a{transition:color .2s}
.footer-links a:hover{color:var(--primary)}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-2);line-height:1.85;max-width:340px}
.footer-bottom{border-top:1px solid rgba(120,190,255,.12);padding:22px 0 30px;display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:13px;color:var(--text-3);flex-wrap:wrap}

/* 响应式 */
@media (max-width:1439px){:root{--container:1200px}}
@media (min-width:1440px){:root{--container:1280px}}
@media (max-width:1024px){
  :root{--pad-x:24px}
  .section{padding:64px 0}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-visual{min-height:340px;order:2}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .service-lead{grid-column:span 12}
  .service-sm{grid-column:span 6}
  .service-guide{grid-column:span 12}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .form-shell{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .faq-grid{grid-template-columns:1fr}
}
@media (max-width:991px){
  .channel-row{display:none}
  .nav-toggle{display:grid}
  .brand-actions .text-link{display:none}
  .compare{grid-template-columns:1fr}
}
@media (max-width:768px){
  :root{--pad-x:18px}
  .section{padding:52px 0}
  .brand-name{font-size:15px;white-space:normal}
  .brand-sub{display:none}
  .hero{padding:52px 0 60px}
  .hero-sub{font-size:17px}
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{width:100%}
  .metrics{grid-template-columns:1fr}
  .service-sm{grid-column:span 12}
  .news-grid{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .form-card,.trust-card{padding:22px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
}
@media (max-width:520px){
  .metric-num strong{font-size:30px}
  .hero-micro{gap:16px}
  .micro-item{font-size:13px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
}

/* roulang page: category1 */
:root{
  --bg-0:#070D17;
  --bg-1:#0B1524;
  --bg-2:#101E33;
  --glass:rgba(255,255,255,.045);
  --glass-strong:rgba(255,255,255,.07);
  --glass-border:rgba(120,190,255,.16);
  --primary:#14C8C0;
  --primary-deep:#0E8F92;
  --accent:#F2A93B;
  --violet:#5B6CFF;
  --text:#EAF2FB;
  --text-2:#A9B8CC;
  --text-3:#6F8098;
  --on-primary:#06101E;
  --ok:#2ED47A;
  --warn:#F2A93B;
  --err:#FF5C6A;
  --info:#19B6E8;
  --r-card:16px;
  --r-panel:20px;
  --r-btn:12px;
  --r-chip:999px;
  --r-badge:8px;
  --sh-card:0 8px 24px rgba(4,12,24,.45);
  --sh-glow:0 0 0 1px rgba(20,200,192,.35), 0 8px 30px rgba(20,200,192,.22);
  --section-y:96px;
  --maxw:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(900px 620px at 10% -12%, rgba(20,200,192,.09), transparent 62%),
    radial-gradient(820px 600px at 94% 6%, rgba(91,108,255,.07), transparent 64%),
    linear-gradient(180deg, rgba(120,190,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,190,255,.05) 1px, transparent 1px);
  background-size:auto,auto,24px 24px,24px 24px;
  background-attachment:fixed,fixed,scroll,scroll;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;line-height:1.32}
h1{font-size:clamp(30px,4vw,46px);letter-spacing:-.01em;line-height:1.25}
h2{font-size:clamp(24px,2.6vw,32px)}
h3{font-size:20px;font-weight:600}
h4{font-size:17px;font-weight:600}
p{margin:0}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.icon{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.icon-lg{width:26px;height:26px}
.icon-sm{width:16px;height:16px}
.sprite{display:none}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 32px}
@media (min-width:1440px){:root{--maxw:1280px}}

/* ============ 顶部信息条 ============ */
.topbar{border-bottom:1px solid rgba(120,190,255,.1);background:rgba(7,13,23,.6)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px;font-size:13px;color:var(--text-3)}
.topbar-inner strong{color:var(--primary);font-weight:600}
.topbar-link{color:var(--text-2);transition:color .2s}
.topbar-link:hover{color:var(--primary)}

/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:80;backdrop-filter:blur(14px);background:rgba(9,17,29,.78);border-bottom:1px solid var(--glass-border);transition:background .3s,box-shadow .3s}
.site-header.is-stuck{background:rgba(9,17,29,.94);box-shadow:0 12px 32px rgba(4,12,24,.55)}
.brand-row{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:68px}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:14px;color:var(--on-primary);background:linear-gradient(135deg,var(--primary),var(--primary-deep));box-shadow:0 6px 20px rgba(20,200,192,.28)}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-size:17px;font-weight:700;color:var(--text);letter-spacing:.01em}
.brand-sub{font-size:12px;color:var(--text-3)}
.header-actions{display:flex;align-items:center;gap:14px}
.icon-btn{display:grid;place-items:center;width:40px;height:40px;border-radius:12px;color:var(--text-2);border:1px solid var(--glass-border);background:var(--glass);transition:color .2s,border-color .2s,background .2s}
.icon-btn:hover{color:var(--primary);border-color:rgba(20,200,192,.4);background:var(--glass-strong)}
.link-quiet{font-size:14px;color:var(--text-2);transition:color .2s}
.link-quiet:hover{color:var(--primary)}
.menu-btn{display:none;place-items:center;width:40px;height:40px;border-radius:12px;border:1px solid var(--glass-border);background:var(--glass);color:var(--text)}
.channel-bar{border-top:1px solid rgba(120,190,255,.1)}
.channel-inner{display:flex;align-items:center;gap:10px;padding-top:10px;padding-bottom:10px;overflow-x:auto;scrollbar-width:none}
.channel-inner::-webkit-scrollbar{display:none}
.chip{position:relative;display:inline-flex;align-items:center;gap:6px;height:36px;padding:0 16px;white-space:nowrap;font-size:14px;color:var(--text-2);border-radius:var(--r-chip);border:1px solid var(--glass-border);background:var(--glass);transition:color .2s,border-color .2s,background .2s}
.chip:hover{color:var(--text);border-color:rgba(20,200,192,.4);background:var(--glass-strong)}
.chip.is-active{color:var(--primary);border-color:rgba(20,200,192,.45);background:rgba(20,200,192,.1)}
.chip.is-active::after{content:"";position:absolute;left:16px;right:16px;bottom:-11px;height:2px;border-radius:2px;background:linear-gradient(90deg,rgba(20,200,192,0),var(--primary),rgba(20,200,192,0));box-shadow:0 0 12px rgba(20,200,192,.7)}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;letter-spacing:.01em;transition:transform .2s,box-shadow .25s,background .25s,border-color .25s,filter .2s}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-primary{color:var(--on-primary);background:linear-gradient(135deg,var(--primary),var(--primary-deep));box-shadow:var(--sh-glow)}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 0 0 1px rgba(20,200,192,.45),0 14px 40px rgba(20,200,192,.32)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(20,200,192,.3),0 6px 18px rgba(20,200,192,.2)}
.btn-ghost{color:var(--primary);background:var(--glass);border:1px solid var(--glass-border)}
.btn-ghost:hover{background:var(--glass-strong);border-color:rgba(20,200,192,.42);transform:translateY(-1px)}
.btn:disabled,.btn.is-loading{opacity:.45;cursor:not-allowed;box-shadow:none;transform:none}
.arrow-link{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:600}
.arrow-link .icon{transition:transform .2s}
.arrow-link:hover .icon{transform:translateX(4px)}

/* ============ Hero ============ */
.page-hero{position:relative;overflow:hidden;min-height:356px;display:flex;align-items:center;background-image:url(/assets/images/backpic/back-1.png);background-size:cover;background-position:center}
.page-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(7,13,23,.95) 0%,rgba(7,13,23,.82) 52%,rgba(7,13,23,.6) 100%)}
.page-hero .container{position:relative;z-index:1;padding-top:52px;padding-bottom:52px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:var(--text-3)}
.crumb .current{color:var(--text-3);max-width:60vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.hero-inner{max-width:760px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;margin-bottom:18px;border-radius:var(--r-chip);font-size:13px;color:var(--primary);background:rgba(20,200,192,.1);border:1px solid rgba(20,200,192,.3)}
.hero-sub{margin-top:16px;font-size:17px;color:var(--text-2);max-width:640px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-meta{display:flex;flex-wrap:wrap;gap:22px;margin-top:26px;font-size:13px;color:var(--text-3)}
.hero-meta span{display:inline-flex;align-items:center;gap:7px}
.hero-meta .icon{color:var(--primary)}

/* ============ 板块 ============ */
.section{padding:var(--section-y) 0}
.section-alt{background:linear-gradient(180deg,rgba(11,21,36,.9),rgba(11,21,36,.35))}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:36px}
.section-head p{margin-top:12px;max-width:720px;font-size:15px;color:var(--text-2)}
.section-title{position:relative;padding-left:16px}
.section-title::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;border-radius:4px;background:linear-gradient(180deg,var(--primary),var(--primary-deep));box-shadow:0 0 14px rgba(20,200,192,.6)}

/* ============ 筛选条 ============ */
.filter-bar{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:16px;border-radius:var(--r-panel);border:1px solid var(--glass-border);background:var(--glass);margin-bottom:34px}
.filter-bar .filter-label{font-size:13px;color:var(--text-3);margin-right:6px}
.filter-chip{height:34px;padding:0 15px;border-radius:var(--r-chip);font-size:14px;color:var(--text-2);border:1px solid var(--glass-border);background:rgba(16,30,51,.6);transition:color .2s,border-color .2s,background .2s}
.filter-chip:hover{color:var(--primary);border-color:rgba(20,200,192,.42);background:rgba(20,200,192,.08)}

/* ============ 卡片网格 ============ */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.g-card{display:flex;flex-direction:column;border-radius:var(--r-card);border:1px solid var(--glass-border);background:var(--glass);overflow:hidden;box-shadow:var(--sh-card);transition:transform .25s,border-color .25s,box-shadow .25s}
.g-card:hover{transform:translateY(-3px);border-color:rgba(20,200,192,.35);box-shadow:0 0 0 1px rgba(20,200,192,.2),0 14px 36px rgba(20,200,192,.16)}
.card-media{position:relative;aspect-ratio:16/9;background:linear-gradient(135deg,var(--bg-2),var(--bg-1));overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.g-card:hover .card-media img{transform:scale(1.04)}
.card-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,13,23,0),rgba(7,13,23,.62))}
.badge{position:absolute;left:12px;top:12px;z-index:2;display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-badge);font-size:12px;color:var(--on-primary);background:linear-gradient(135deg,var(--accent),#d98f22)}
.badge.badge-info{color:#04121c;background:linear-gradient(135deg,var(--primary),var(--primary-deep))}
.card-body{display:flex;flex-direction:column;gap:10px;padding:20px}
.card-body p{font-size:14px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;padding-top:14px;border-top:1px solid rgba(120,190,255,.1);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3)}

/* ============ 图文 + 清单 ============ */
.split{display:grid;grid-template-columns:5fr 6fr;gap:40px;align-items:center}
.figure{position:relative;border-radius:var(--r-panel);overflow:hidden;border:1px solid var(--glass-border);box-shadow:var(--sh-card);aspect-ratio:4/3}
.figure img{width:100%;height:100%;object-fit:cover}
.figure::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,13,23,.05),rgba(7,13,23,.55))}
.figure figcaption{position:absolute;left:18px;right:18px;bottom:16px;z-index:2;font-size:13px;color:var(--text-2)}
.check-list{display:grid;gap:14px;margin-top:26px}
.check-list li{display:flex;gap:12px;padding:16px 18px;border-radius:14px;border:1px solid var(--glass-border);background:var(--glass);transition:border-color .2s,background .2s,transform .2s}
.check-list li:hover{border-color:rgba(20,200,192,.34);background:var(--glass-strong);transform:translateX(3px)}
.check-list .mark{flex:0 0 auto;display:grid;place-items:center;width:26px;height:26px;border-radius:8px;color:var(--on-primary);background:linear-gradient(135deg,var(--primary),var(--primary-deep))}
.check-list strong{display:block;color:var(--text);font-size:15px;font-weight:600;margin-bottom:2px}
.check-list span{font-size:14px;color:var(--text-2)}

/* ============ 步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;counter-reset:step}
.step{position:relative;padding:24px 20px;border-radius:var(--r-card);border:1px solid var(--glass-border);background:var(--glass);transition:border-color .25s,transform .25s}
.step:hover{border-color:rgba(20,200,192,.35);transform:translateY(-3px)}
.step-num{display:inline-grid;place-items:center;width:44px;height:44px;margin-bottom:16px;border-radius:14px;font-size:17px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--on-primary);background:linear-gradient(135deg,var(--primary),var(--primary-deep));box-shadow:0 8px 24px rgba(20,200,192,.25)}
.step h3{font-size:18px;margin-bottom:8px}
.step p{font-size:14px}
.step-line{position:absolute;top:45px;right:-22px;width:22px;height:1px;background:linear-gradient(90deg,rgba(20,200,192,.5),rgba(20,200,192,0))}
.step:last-child .step-line{display:none}

/* ============ 指标 ============ */
.metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.g-metric{padding:22px 20px;border-radius:var(--r-card);border:1px solid var(--glass-border);background:var(--glass)}
.g-metric .metric-top{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.g-metric .metric-top .icon{color:var(--primary)}
.g-metric .metric-num{margin-top:12px;font-size:36px;font-weight:700;line-height:1.1;color:var(--primary);font-variant-numeric:tabular-nums}
.g-metric .metric-num em{font-size:14px;font-style:normal;color:var(--text-2);margin-left:4px}
.g-metric .metric-desc{margin-top:6px;font-size:13px;color:var(--text-3)}
.trend{margin-top:14px;height:6px;border-radius:6px;background:rgba(120,190,255,.12);overflow:hidden}
.trend i{display:block;height:100%;border-radius:6px;background:linear-gradient(90deg,var(--primary),var(--violet))}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.faq{border-radius:var(--r-card);border:1px solid var(--glass-border);background:var(--glass);overflow:hidden;transition:border-color .25s,box-shadow .25s}
.faq[open]{border-color:rgba(20,200,192,.42);box-shadow:0 0 0 1px rgba(20,200,192,.18),0 10px 28px rgba(20,200,192,.12)}
.faq summary{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:18px 20px;font-size:15px;font-weight:600;color:var(--text);cursor:pointer;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary .plus{flex:0 0 auto;display:grid;place-items:center;width:26px;height:26px;border-radius:8px;color:var(--primary);border:1px solid rgba(20,200,192,.32);background:rgba(20,200,192,.08);transition:transform .25s}
.faq[open] summary .plus{transform:rotate(45deg)}
.faq .faq-body{padding:0 20px 20px;font-size:14px;color:var(--text-2)}

/* ============ CTA / 表单 ============ */
.cta-wrap{display:grid;grid-template-columns:6fr 4fr;gap:32px;align-items:start}
.g-panel{padding:28px;border-radius:var(--r-panel);border:1px solid var(--glass-border);background:var(--glass);box-shadow:var(--sh-card)}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1/-1}
.field label{font-size:14px;color:var(--text-2)}
.field input,.field select,.field textarea{width:100%;padding:13px 14px;border-radius:12px;border:1px solid var(--glass-border);background:rgba(16,30,51,.75);color:var(--text);font-size:15px;transition:border-color .2s,box-shadow .2s,background .2s}
.field textarea{min-height:118px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(20,200,192,.22);background:rgba(16,30,51,.95)}
.field .err-text{font-size:13px;color:var(--err);display:none}
.field.is-error input,.field.is-error select,.field.is-error textarea{border-color:var(--err)}
.field.is-error .err-text{display:block}
.agree{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--text-3)}
.agree input{width:18px;height:18px;margin-top:3px;accent-color:var(--primary)}
.form-note{margin-top:14px;font-size:13px;color:var(--text-3)}
.form-alert{display:none;margin-bottom:18px;padding:12px 14px;border-left:3px solid var(--ok);border-radius:10px;background:rgba(46,212,122,.1);color:var(--text);font-size:14px}
.form-alert.is-visible{display:block}
.trust-list{display:grid;gap:14px;margin-top:22px}
.trust-list li{display:flex;gap:12px;font-size:14px;color:var(--text-2)}
.trust-list .icon{flex:0 0 auto;color:var(--primary);margin-top:3px}
.contact-block{margin-top:24px;padding-top:20px;border-top:1px solid rgba(120,190,255,.12);display:grid;gap:8px;font-size:14px;color:var(--text-2)}
.contact-block strong{color:var(--text)}

/* ============ 页脚 ============ */
.site-footer{margin-top:24px;border-top:1px solid var(--glass-border);background:linear-gradient(180deg,rgba(11,21,36,.6),rgba(7,13,23,.95))}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px;padding-top:64px;padding-bottom:44px}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-3);max-width:340px}
.footer-title{margin-bottom:16px;font-size:15px;color:var(--text)}
.footer-links{display:grid;gap:11px;font-size:14px}
.footer-links a{color:var(--text-2);transition:color .2s,transform .2s;display:inline-block}
.footer-links a:hover{color:var(--primary);transform:translateX(3px)}
.footer-links span{color:var(--text-3);font-size:13px}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;padding-top:20px;padding-bottom:28px;border-top:1px solid rgba(120,190,255,.1);font-size:13px;color:var(--text-3)}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  :root{--section-y:80px}
  .split{grid-template-columns:1fr;gap:30px}
}
@media (max-width:991px){
  :root{--section-y:64px}
  .container{padding:0 24px}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .metrics{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .step-line{display:none}
  .cta-wrap{grid-template-columns:1fr}
  .faq-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  .menu-btn{display:grid}
  .link-quiet{display:none}
  .brand-sub{display:none}
  .channel-bar{display:none}
  .site-header.is-open .channel-bar{display:block}
  .channel-inner{flex-direction:column;align-items:stretch;gap:4px;padding-top:8px;padding-bottom:14px}
  .chip{height:48px;justify-content:flex-start;border-color:transparent;background:transparent;font-size:15px}
  .chip.is-active::after{display:none}
  .chip.is-active{background:rgba(20,200,192,.1);border-color:rgba(20,200,192,.32)}
  .page-hero{min-height:320px}
  .page-hero .container{padding-top:38px;padding-bottom:38px}
  .hero-sub{font-size:16px}
  .btn{width:100%}
  .hero-cta{gap:12px}
  .grid-3{grid-template-columns:1fr}
  .metrics{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;padding-top:48px}
  .g-metric .metric-num{font-size:32px}
  .crumb .current{max-width:100%}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .g-panel{padding:20px}
  .topbar-inner{font-size:12px}
  .topbar-link{display:none}
  .hero-meta{gap:14px}
  .filter-bar{padding:12px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root{
  --bg-0:#070D17;
  --bg-1:#0B1524;
  --bg-2:#101E33;
  --glass:rgba(255,255,255,.045);
  --glass-strong:rgba(255,255,255,.07);
  --glass-border:rgba(120,190,255,.16);
  --primary:#14C8C0;
  --primary-deep:#0E8F92;
  --accent:#F2A93B;
  --violet:#5B6CFF;
  --text:#EAF2FB;
  --muted:#A9B8CC;
  --faint:#6F8098;
  --on-primary:#06101E;
  --success:#2ED47A;
  --danger:#FF5C6A;
  --info:#19B6E8;
  --radius-card:16px;
  --radius-panel:20px;
  --radius-btn:12px;
  --shadow-card:0 8px 24px rgba(4,12,24,.45);
  --shadow-glow:0 0 0 1px rgba(20,200,192,.35),0 8px 30px rgba(20,200,192,.22);
  --container:1200px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg-0);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    radial-gradient(880px 520px at 12% -6%,rgba(20,200,192,.10),transparent 62%),
    radial-gradient(760px 480px at 92% 8%,rgba(91,108,255,.08),transparent 60%),
    linear-gradient(rgba(120,190,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,190,255,.05) 1px,transparent 1px);
  background-size:auto,auto,24px 24px,24px 24px;
}
body::after{
  content:"";
  position:fixed;
  top:0;left:0;right:0;height:1px;
  z-index:60;
  background:linear-gradient(90deg,transparent,rgba(20,200,192,.55),transparent);
  pointer-events:none;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:none;cursor:pointer}
ul,ol{padding-left:22px}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text);letter-spacing:-.01em}
p{margin:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
::selection{background:rgba(20,200,192,.32)}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
  position:relative;
  z-index:1;
}
.icon{width:20px;height:20px;flex:0 0 auto;color:currentColor;display:inline-block;vertical-align:middle}
.icon-sm{width:16px;height:16px}
.icon-lg{width:24px;height:24px}
.sprite{display:none}

/* ============ 头部 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(7,13,23,.74);
  border-bottom:1px solid var(--glass-border);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:background .28s ease,box-shadow .28s ease;
}
.site-header.is-stuck{
  background:rgba(7,13,23,.94);
  box-shadow:0 12px 34px rgba(3,8,16,.6);
}
.topline{
  border-bottom:1px solid rgba(120,190,255,.1);
  background:rgba(255,255,255,.02);
}
.topline-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  min-height:36px;
  font-size:13px;
  color:var(--faint);
}
.topline-inner strong{color:var(--muted);font-weight:600}
.topline-inner a{color:var(--primary);display:inline-flex;align-items:center;gap:6px}
.topline-inner a:hover{text-decoration:underline}
.brand-row{
  display:flex;
  align-items:center;
  gap:18px;
  min-height:74px;
}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand-mark{
  width:44px;height:44px;flex:0 0 auto;
  border-radius:13px;
  display:grid;place-items:center;
  color:var(--on-primary);
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  box-shadow:0 0 0 1px rgba(20,200,192,.35),0 8px 22px rgba(20,200,192,.26);
}
.brand-text{display:block;min-width:0}
.brand-name{display:block;font-size:17px;font-weight:700;letter-spacing:-.01em;line-height:1.3;white-space:nowrap}
.brand-sub{display:block;font-size:12px;color:var(--faint);letter-spacing:.04em;line-height:1.5}
.brand-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.icon-btn{
  width:42px;height:42px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--radius-btn);
  border:1px solid var(--glass-border);
  background:var(--glass);
  color:var(--muted);
  transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.icon-btn:hover{color:var(--primary);background:var(--glass-strong);border-color:rgba(20,200,192,.4)}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--primary);
  padding:8px 4px;
}
.text-link .icon{transition:transform .2s ease}
.text-link:hover .icon{transform:translateX(4px)}
.nav-toggle{display:none}
.channel-inner{
  display:flex;
  align-items:center;
  gap:10px;
  padding-top:10px;
  padding-bottom:12px;
  overflow-x:auto;
  scrollbar-width:none;
}
.channel-inner::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;
  position:relative;
  display:inline-flex;
  align-items:center;
  padding:8px 16px;
  border-radius:999px;
  border:1px solid var(--glass-border);
  background:var(--glass);
  color:var(--muted);
  font-size:14px;
  line-height:1.4;
  white-space:nowrap;
  transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.chip:hover{color:var(--text);background:var(--glass-strong);border-color:rgba(20,200,192,.4)}
.chip.is-active{
  color:var(--primary);
  background:rgba(20,200,192,.1);
  border-color:rgba(20,200,192,.45);
}
.chip.is-active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:-1px;
  height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--violet));
  box-shadow:0 0 10px rgba(20,200,192,.6);
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);
  padding:12px 22px;
  font-size:15px;font-weight:600;line-height:1.4;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .22s ease,background .2s ease,border-color .2s ease,filter .2s ease;
}
.btn-primary{
  color:var(--on-primary);
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{
  transform:translateY(-1px);
  filter:brightness(1.06);
  box-shadow:0 0 0 1px rgba(20,200,192,.5),0 14px 38px rgba(20,200,192,.34);
}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(20,200,192,.4),0 4px 14px rgba(20,200,192,.2)}
.btn-ghost{
  color:var(--primary);
  background:var(--glass);
  border-color:var(--glass-border);
}
.btn-ghost:hover{background:var(--glass-strong);border-color:rgba(20,200,192,.45)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn:disabled,.btn[disabled]{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none}
.arrow-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--primary);font-size:14px;font-weight:600;
}
.arrow-link .icon{transition:transform .2s ease}
.arrow-link:hover .icon{transform:translateX(4px)}

/* ============ 通用板块 ============ */
.section{padding:96px 0}
.section-tight{padding:56px 0 0}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:20px;margin-bottom:36px;
}
.section-head h2{font-size:clamp(24px,2.6vw,32px);line-height:1.35}
.section-head .section-sub{margin-top:10px;font-size:15px;color:var(--faint);max-width:640px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;
  border-radius:8px;
  font-size:12px;
  line-height:1.6;
  color:var(--primary);
  background:rgba(20,200,192,.12);
  border:1px solid rgba(20,200,192,.28);
}
.g-panel{
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-panel);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}

/* ============ 面包屑 + 文章头 ============ */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:24px 0 0;
  font-size:13px;color:var(--faint);
}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--primary)}
.crumbs .sep{color:rgba(120,190,255,.3)}
.crumbs .current{
  color:var(--faint);
  max-width:min(60%,520px);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.article-head{padding:26px 0 24px;border-bottom:1px solid var(--glass-border)}
.article-title{
  font-size:clamp(28px,3.6vw,44px);
  line-height:1.28;
  letter-spacing:-.012em;
  max-width:920px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin-top:18px;
  font-size:13px;color:var(--faint);
}
.meta-item{display:inline-flex;align-items:center;gap:6px}
.meta-item .icon{color:rgba(120,190,255,.5)}
.article-cover{
  margin:36px 0 0;
  position:relative;
  border-radius:var(--radius-panel);
  overflow:hidden;
  border:1px solid var(--glass-border);
  box-shadow:var(--shadow-card);
}
.article-cover img{width:100%;height:clamp(200px,32vw,420px);object-fit:cover}
.article-cover::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,13,23,.05),rgba(7,13,23,.72));
}

/* ============ 正文布局 ============ */
.layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:56px;
  align-items:start;
  padding:52px 0 0;
}
.article-body{min-width:0}
.prose{
  max-width:760px;
  font-size:16.5px;
  line-height:1.9;
  color:var(--muted);
  overflow-wrap:break-word;
}
.prose > *:first-child{margin-top:0}
.prose p{margin:0 0 1.25em}
.prose h2{
  position:relative;
  font-size:clamp(22px,2.4vw,28px);
  line-height:1.4;
  margin:48px 0 16px;
  padding-left:16px;
}
.prose h2::before{
  content:"";
  position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--primary),var(--primary-deep));
  box-shadow:0 0 12px rgba(20,200,192,.55);
}
.prose h3{
  position:relative;
  font-size:19px;font-weight:600;line-height:1.55;
  margin:34px 0 12px;
  padding-left:18px;
}
.prose h3::before{
  content:"";
  position:absolute;left:0;top:.62em;
  width:8px;height:8px;border-radius:2px;
  background:var(--accent);
}
.prose h4{font-size:17px;font-weight:600;margin:26px 0 10px}
.prose ul,.prose ol{margin:0 0 1.25em;padding-left:22px}
.prose li{margin-bottom:10px}
.prose li::marker{color:var(--primary)}
.prose blockquote{
  margin:28px 0;
  padding:18px 22px;
  color:var(--text);
  background:var(--glass);
  border-left:3px solid var(--primary);
  border-radius:0 14px 14px 0;
}
.prose blockquote p:last-child{margin-bottom:0}
.prose a{color:var(--primary);border-bottom:1px solid rgba(20,200,192,.35)}
.prose a:hover{border-bottom-color:var(--primary)}
.prose img{border-radius:12px;margin:24px 0}
.prose figure{margin:24px 0}
.prose figcaption{font-size:13px;color:var(--faint);text-align:center;margin-top:8px}
.prose table{
  width:100%;
  border-collapse:collapse;
  margin:24px 0;
  font-size:15px;
  display:block;
  overflow-x:auto;
}
.prose th,.prose td{padding:12px 16px;border-bottom:1px solid var(--glass-border);text-align:left}
.prose th{background:var(--glass-strong);color:var(--text);font-weight:600;white-space:nowrap}
.prose tr:hover td{background:rgba(255,255,255,.03)}
.prose hr{border:none;border-top:1px solid var(--glass-border);margin:36px 0}

/* ============ 文末 ============ */
.tag-list{display:flex;flex-wrap:wrap;gap:10px;margin:44px 0 0}
.tag-list .chip{font-size:13px;padding:7px 14px}
.post-nav{
  display:grid;grid-template-columns:1fr 1fr;gap:16px;
  margin-top:28px;
}
.post-nav a{
  display:block;
  padding:18px 20px;
  border-radius:var(--radius-card);
  background:var(--glass);
  border:1px solid var(--glass-border);
  transition:border-color .2s ease,background .2s ease,transform .2s ease;
}
.post-nav a:hover{border-color:rgba(20,200,192,.45);background:var(--glass-strong);transform:translateY(-2px)}
.post-nav .dir{display:block;font-size:12px;color:var(--faint);margin-bottom:6px}
.post-nav .ttl{display:block;font-size:15px;color:var(--text);line-height:1.6}
.post-nav .next{text-align:right}

/* ============ 空态 ============ */
.empty-state{
  padding:52px 32px;
  text-align:center;
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-panel);
}
.empty-state .empty-icon{
  width:56px;height:56px;margin:0 auto 18px;
  display:grid;place-items:center;
  border-radius:16px;
  color:var(--primary);
  background:rgba(20,200,192,.1);
  border:1px solid rgba(20,200,192,.28);
}
.empty-state h2{font-size:22px;margin-bottom:12px}
.empty-state p{color:var(--faint);font-size:15px;max-width:520px;margin:0 auto 24px}

/* ============ 侧栏 ============ */
.side-col{position:sticky;top:132px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-card);
  padding:20px;
}
.side-title{
  font-size:13px;font-weight:600;color:var(--faint);
  letter-spacing:.08em;margin-bottom:14px;
}
.side-list{display:flex;flex-direction:column;gap:2px}
.side-list a{
  display:flex;align-items:center;gap:10px;
  padding:9px 10px;
  border-radius:10px;
  font-size:14px;color:var(--muted);
  transition:color .2s ease,background .2s ease;
}
.side-list a:hover{color:var(--text);background:var(--glass-strong)}
.side-list .num{
  flex:0 0 auto;
  width:22px;height:22px;
  display:grid;place-items:center;
  border-radius:7px;
  font-size:12px;font-weight:600;
  color:var(--primary);
  background:rgba(20,200,192,.1);
}
.side-cta{text-align:left}
.side-cta p{font-size:14px;color:var(--faint);margin:10px 0 16px;line-height:1.8}
.side-cta .btn{width:100%}

/* ============ 相关推荐 ============ */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.card{
  display:flex;flex-direction:column;
  background:var(--bg-2);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.card:hover{
  transform:translateY(-3px);
  border-color:rgba(20,200,192,.4);
  box-shadow:0 14px 36px rgba(4,12,24,.62),0 0 0 1px rgba(20,200,192,.18);
}
.card-cover{display:block;position:relative;overflow:hidden}
.card-cover img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  transition:transform .4s ease;
}
.card:hover .card-cover img{transform:scale(1.04)}
.card-cover::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 45%,rgba(7,13,23,.6));
}
.card-body{padding:20px;display:flex;flex-direction:column;flex:1}
.card-title{font-size:17px;line-height:1.55;margin:12px 0 10px;font-weight:600}
.card-title a{transition:color .2s ease}
.card-title a:hover{color:var(--primary)}
.card-desc{
  font-size:14px;color:var(--faint);line-height:1.8;
  margin:0 0 18px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  margin-top:auto;
  display:flex;align-items:center;justify-content:space-between;
  gap:12px;font-size:13px;color:var(--faint);
  padding-top:14px;border-top:1px solid rgba(120,190,255,.1);
}

/* ============ 底部 CTA ============ */
.cta-panel{
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  padding:36px 40px;
  border-radius:var(--radius-panel);
  background:
    radial-gradient(600px 220px at 8% 0%,rgba(20,200,192,.14),transparent 62%),
    var(--glass);
  border:1px solid var(--glass-border);
}
.cta-title{font-size:clamp(20px,2.2vw,26px);line-height:1.45}
.cta-panel p{color:var(--faint);font-size:15px;margin-top:10px;max-width:620px}
.cta-actions{display:flex;gap:12px;flex:0 0 auto}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:0;
  background:var(--bg-1);
  border-top:1px solid var(--glass-border);
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.1fr;
  gap:32px;
  padding-top:60px;
  padding-bottom:44px;
}
.footer-brand p{
  margin-top:18px;
  font-size:14px;
  color:var(--faint);
  line-height:1.9;
  max-width:340px;
}
.footer-title{font-size:15px;font-weight:600;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:11px;font-size:14px;color:var(--faint)}
.footer-links a{transition:color .2s ease}
.footer-links a:hover{color:var(--primary)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  border-top:1px solid var(--glass-border);
  padding-top:22px;
  padding-bottom:30px;
  font-size:13px;
  color:var(--faint);
}

/* ============ 响应式 ============ */
@media (min-width:1440px){
  :root{--container:1280px}
}
@media (max-width:1199px){
  .layout{grid-template-columns:minmax(0,1fr);gap:40px}
  .side-col{position:static;order:2}
  .article-body{order:1}
}
@media (max-width:991px){
  .section{padding:64px 0}
  .container{padding:0 24px}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .cta-panel{flex-direction:column;align-items:flex-start;padding:30px 28px}
  .cta-actions{width:100%;flex-wrap:wrap}
}
@media (max-width:860px){
  .brand-row{min-height:68px}
  .brand-name{font-size:16px;white-space:normal}
  .nav-toggle{display:inline-flex}
  .brand-actions .text-link{display:none}
  .channel-inner{
    display:none;
    flex-direction:column;
    align-items:stretch;
    position:absolute;
    top:100%;left:0;right:0;
    max-height:70vh;
    overflow-y:auto;
    padding:16px 24px 22px;
    gap:8px;
    background:rgba(9,17,29,.98);
    border-top:1px solid var(--glass-border);
    border-bottom:1px solid var(--glass-border);
    box-shadow:0 20px 40px rgba(3,8,16,.65);
  }
  .channel-inner.is-open{display:flex}
  .chip{width:100%;min-height:48px;border-radius:12px;justify-content:flex-start}
  .chip.is-active::after{display:none}
}
@media (max-width:767px){
  .section{padding:48px 0}
  .layout{padding-top:36px}
  .article-head{padding:20px 0 18px}
  .related-grid{grid-template-columns:1fr}
  .article-cover{margin-top:26px}
  .prose{font-size:16px}
  .post-nav{grid-template-columns:1fr}
  .post-nav .next{text-align:left}
}
@media (max-width:575px){
  .container{padding:0 16px}
  .topline-inner{justify-content:center}
  .topline-inner .topline-side{display:none}
  .brand-actions .btn{display:none}
  .footer-grid{grid-template-columns:1fr;padding-top:44px}
  .footer-bottom{flex-direction:column}
  .btn{width:100%}
  .cta-actions .btn{width:100%}
  .crumbs .current{max-width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --bg-0:#070D17;--bg-1:#0B1524;--bg-2:#101E33;
  --glass:rgba(255,255,255,.045);--glass-strong:rgba(255,255,255,.07);
  --glass-border:rgba(120,190,255,.16);--line:rgba(120,190,255,.12);
  --primary:#14C8C0;--primary-deep:#0E8F92;--accent:#F2A93B;--violet:#5B6CFF;
  --text:#EAF2FB;--text-2:#A9B8CC;--text-3:#6F8098;--ink:#06101E;
  --ok:#2ED47A;--warn:#F2A93B;--err:#FF5C6A;--info:#19B6E8;
  --r-sm:8px;--r:12px;--r-lg:16px;--r-xl:20px;--r-pill:999px;
  --shadow:0 8px 24px rgba(4,12,24,.45);
  --glow:0 0 0 1px rgba(20,200,192,.35),0 8px 30px rgba(20,200,192,.22);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:130px}
body{
  margin:0;font-family:var(--font);font-size:16px;line-height:1.85;color:var(--text);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(900px 520px at 12% -6%,rgba(20,200,192,.10),transparent 62%),
    radial-gradient(760px 480px at 92% 4%,rgba(91,108,255,.08),transparent 60%),
    linear-gradient(rgba(120,190,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,190,255,.05) 1px,transparent 1px);
  background-size:auto,auto,24px 24px,24px 24px;
  background-attachment:fixed;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--text-2);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--primary)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;letter-spacing:-.01em;line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}
.skip-link{position:absolute;left:-9999px;top:0;z-index:200;background:var(--primary);color:var(--ink);padding:10px 18px;border-radius:0 0 var(--r) 0}
.skip-link:focus{left:0}
.icon{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none}
.icon-sm{width:16px;height:16px}
.icon-lg{width:26px;height:26px}
.icon-sprite{display:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
@media(min-width:1440px){.container{max-width:1280px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,13,23,.74);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--glass-border);
  transition:background .3s ease,box-shadow .3s ease;
}
.site-header.is-stuck{background:rgba(7,13,23,.94);box-shadow:0 12px 32px rgba(4,12,24,.55)}
.brand-row{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-top:14px;padding-bottom:14px}
.brand{display:inline-flex;align-items:center;gap:12px;color:var(--text)}
.brand:hover{color:var(--text)}
.brand-mark{
  width:42px;height:42px;border-radius:var(--r);display:grid;place-items:center;flex:none;
  background:linear-gradient(135deg,rgba(20,200,192,.28),rgba(91,108,255,.22));
  border:1px solid var(--glass-border);color:var(--primary);
  box-shadow:0 0 0 1px rgba(20,200,192,.12),0 6px 18px rgba(20,200,192,.16);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--text)}
.brand-sub{font-size:12px;color:var(--text-3);letter-spacing:.08em}
.brand-actions{display:flex;align-items:center;gap:14px}
.icon-btn{
  width:40px;height:40px;border-radius:50%;display:grid;place-items:center;cursor:pointer;
  background:var(--glass);border:1px solid var(--glass-border);color:var(--text-2);
  transition:border-color .2s ease,color .2s ease,background .2s ease,transform .2s ease;
}
.icon-btn:hover{border-color:rgba(20,200,192,.45);color:var(--primary);background:var(--glass-strong);transform:translateY(-1px)}
.text-link{font-size:14px;color:var(--text-2);padding:6px 2px;border-bottom:1px solid transparent}
.text-link:hover{color:var(--primary);border-bottom-color:rgba(20,200,192,.5)}
.menu-toggle{display:none}
.channel-inner{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  padding-top:12px;padding-bottom:12px;border-top:1px solid rgba(120,190,255,.1);
}
.chip{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:var(--r-pill);
  font-size:14px;color:var(--text-2);background:var(--glass);border:1px solid var(--glass-border);
  position:relative;transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.chip:hover{color:var(--text);background:var(--glass-strong);border-color:rgba(20,200,192,.4)}
.chip.is-active{color:var(--primary);background:rgba(20,200,192,.1);border-color:rgba(20,200,192,.38)}
.chip.is-active::after{
  content:"";position:absolute;left:16px;right:16px;bottom:-1px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--violet));box-shadow:0 0 10px rgba(20,200,192,.7);
}
.nav-drawer{display:none}

/* ---------- buttons ---------- */
.g-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:0 22px;height:46px;border-radius:var(--r);border:1px solid transparent;cursor:pointer;
  font-size:15px;font-weight:600;letter-spacing:.02em;transition:all .22s ease;white-space:nowrap;
}
.g-btn--primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));color:var(--ink);
  box-shadow:0 0 0 1px rgba(20,200,192,.4),0 8px 26px rgba(20,200,192,.26);
}
.g-btn--primary:hover{color:var(--ink);transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 0 0 1px rgba(20,200,192,.5),0 12px 34px rgba(20,200,192,.34)}
.g-btn--primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(20,200,192,.4),0 4px 14px rgba(20,200,192,.22)}
.g-btn--ghost{background:var(--glass);border-color:var(--glass-border);color:var(--primary)}
.g-btn--ghost:hover{background:var(--glass-strong);border-color:rgba(20,200,192,.45);color:var(--primary);transform:translateY(-1px)}
.g-btn--sm{height:38px;padding:0 16px;font-size:14px;border-radius:10px}
.g-btn--block{width:100%}
.g-btn[disabled]{opacity:.45;cursor:not-allowed;box-shadow:none;transform:none;filter:none}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:600}
.link-arrow .icon{transition:transform .22s ease}
.link-arrow:hover{color:var(--primary)}
.link-arrow:hover .icon{transform:translateX(4px)}

/* ---------- hero ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--glass-border)}
.hero-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;opacity:.3;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(7,13,23,.96) 0%,rgba(7,13,23,.82) 48%,rgba(7,13,23,.6) 100%);
}
.hero-inner{position:relative;z-index:2;padding-top:64px;padding-bottom:64px;max-width:860px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px;flex-wrap:wrap}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{opacity:.5}
.breadcrumb .current{color:var(--text-2)}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:var(--r-sm);
  font-size:12px;letter-spacing:.06em;color:var(--primary);
  background:rgba(20,200,192,.1);border:1px solid rgba(20,200,192,.3);
}
.page-hero h1{font-size:clamp(28px,3.6vw,42px);margin:18px 0 16px;line-height:1.28}
.hero-sub{font-size:17px;color:var(--text-2);max-width:680px;line-height:1.9}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}
.hero-metrics{display:flex;gap:32px;flex-wrap:wrap;margin-top:32px;padding-top:24px;border-top:1px solid rgba(120,190,255,.14)}
.hero-metrics li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2)}
.hero-metrics .icon{color:var(--primary)}

/* ---------- sections ---------- */
.section{padding:96px 0}
.section--alt{background:linear-gradient(180deg,rgba(11,21,36,.72),rgba(11,21,36,.32));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:40px;margin-bottom:44px}
.section-head .lead{max-width:660px}
.eyebrow{display:inline-block;font-size:13px;letter-spacing:.14em;color:var(--primary);margin-bottom:12px}
.section-title{font-size:clamp(23px,2.6vw,31px)}
.section-sub{font-size:15px;color:var(--text-2);margin-top:12px;max-width:600px}

/* ---------- split layout ---------- */
.split-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:52px;align-items:start}
.anchor-rail{position:sticky;top:132px;padding:22px;border-radius:var(--r-lg);
  background:var(--glass);border:1px solid var(--glass-border);box-shadow:var(--shadow)}
.rail-title{font-size:12px;letter-spacing:.16em;color:var(--text-3);margin-bottom:14px}
.rail-link{
  display:block;position:relative;padding:10px 12px 10px 16px;border-radius:10px;
  font-size:14px;color:var(--text-2);line-height:1.6;transition:color .2s ease,background .2s ease;
}
.rail-link::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:0;border-radius:3px;background:linear-gradient(180deg,var(--primary),var(--violet));
  transition:height .25s ease;
}
.rail-link:hover{color:var(--text);background:rgba(255,255,255,.04)}
.rail-link.is-active{color:var(--primary);background:rgba(20,200,192,.08)}
.rail-link.is-active::before{height:22px;box-shadow:0 0 10px rgba(20,200,192,.6)}
.rail-note{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);line-height:1.75}

.entry-list{display:block}
.entry{
  display:grid;grid-template-columns:40% minmax(0,1fr);gap:32px;
  padding:34px 0;border-bottom:1px solid var(--line);align-items:start;
}
.entry:first-child{padding-top:0}
.entry:last-child{border-bottom:none}
.entry-media{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--glass-border)}
.entry-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .4s ease}
.entry-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,13,23,0) 40%,rgba(7,13,23,.55))}
.entry:hover .entry-media img{transform:scale(1.04)}
.chip-sm{
  display:inline-flex;align-items:center;height:26px;padding:0 11px;border-radius:var(--r-pill);
  font-size:12px;color:var(--accent);background:rgba(242,169,59,.1);border:1px solid rgba(242,169,59,.28);
}
.entry-body h3{font-size:21px;margin:12px 0 12px;line-height:1.45}
.entry-body p{font-size:15px;color:var(--text-2)}
.tick-list{margin:16px 0 18px;display:flex;flex-direction:column;gap:9px}
.tick-list li{position:relative;padding-left:22px;font-size:14px;color:var(--text-2);line-height:1.75}
.tick-list li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 8px rgba(20,200,192,.75);
}

/* ---------- scene cards ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.scene-card{
  background:var(--glass);border:1px solid var(--glass-border);border-radius:var(--r-lg);
  padding:30px 26px;transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.scene-card:hover{transform:translateY(-3px);border-color:rgba(20,200,192,.4);box-shadow:0 12px 34px rgba(20,200,192,.16)}
.card-icon{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;color:var(--primary);
  background:rgba(20,200,192,.1);border:1px solid rgba(20,200,192,.26);margin-bottom:18px;
}
.scene-card h3{font-size:18px;margin-bottom:10px}
.scene-card p{font-size:14px;color:var(--text-2)}
.scene-card .meta{margin-top:16px;font-size:13px;color:var(--text-3)}

/* ---------- compare ---------- */
.compare-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.compare-card{border-radius:var(--r-xl);padding:32px 30px;background:var(--glass);border:1px solid var(--glass-border)}
.compare-card--base{border-color:rgba(120,190,255,.2)}
.compare-card--plus{border-color:rgba(20,200,192,.42);box-shadow:0 10px 34px rgba(20,200,192,.14)}
.compare-card h3{font-size:20px;margin-bottom:6px}
.compare-card .tagline{font-size:14px;color:var(--text-3);margin-bottom:22px}
.compare-card ul{display:flex;flex-direction:column;gap:14px}
.compare-card li{display:flex;align-items:center;gap:12px;font-size:15px;color:var(--text-2)}
.compare-card li .icon{color:var(--primary)}
.compare-card--base li .icon{color:var(--info)}
.bar{position:relative;height:6px;border-radius:6px;background:rgba(255,255,255,.07);overflow:hidden;margin-top:10px}
.bar span{position:absolute;inset:0 auto 0 0;border-radius:6px;background:linear-gradient(90deg,var(--primary),var(--violet))}
.compare-card--base .bar span{background:linear-gradient(90deg,var(--info),rgba(25,182,232,.35))}
.compare-foot{margin-top:24px;padding-top:18px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3)}

/* ---------- faq ---------- */
.faq-list{max-width:900px}
.faq-item{
  background:var(--glass);border:1px solid var(--glass-border);border-radius:var(--r-lg);
  margin-bottom:14px;overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease;
}
.faq-item[open]{border-color:rgba(20,200,192,.42);box-shadow:0 10px 30px rgba(20,200,192,.13)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;font-size:16px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .icon{color:var(--primary);transition:transform .25s ease}
.faq-item[open] summary .icon{transform:rotate(45deg)}
.faq-body{padding:0 24px 22px;font-size:15px;color:var(--text-2)}

/* ---------- band cta ---------- */
.band-cta{padding:0 0 96px}
.band-inner{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  border-radius:var(--r-xl);padding:34px 38px;
  background:linear-gradient(120deg,rgba(20,200,192,.14),rgba(91,108,255,.12));
  border:1px solid rgba(20,200,192,.34);
}
.band-inner h3{font-size:22px;margin-bottom:8px}
.band-inner p{font-size:14px;color:var(--text-2);max-width:620px}

/* ---------- form ---------- */
.form-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:32px;align-items:start}
.form-card{background:var(--glass);border:1px solid var(--glass-border);border-radius:var(--r-xl);padding:34px;box-shadow:var(--shadow)}
.form-card h3{font-size:21px;margin-bottom:8px}
.form-card .hint{font-size:14px;color:var(--text-3);margin-bottom:26px}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;color:var(--text-2);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;background:rgba(6,16,30,.62);border:1px solid var(--glass-border);border-radius:var(--r);
  padding:12px 14px;color:var(--text);font-size:15px;transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field textarea{min-height:118px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);background:rgba(6,16,30,.85);
  box-shadow:0 0 0 3px rgba(20,200,192,.18);
}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--text-2);margin:6px 0 22px;line-height:1.7}
.check-row input{width:16px;height:16px;margin-top:5px;accent-color:var(--primary)}
.form-ok{
  display:none;margin-top:16px;padding:12px 16px;border-radius:var(--r);font-size:14px;
  color:var(--ok);background:rgba(46,212,122,.1);border-left:3px solid var(--ok);
}
.form-ok.is-visible{display:block}
.trust-card{background:var(--glass);border:1px solid var(--glass-border);border-radius:var(--r-xl);padding:30px}
.trust-card h4{font-size:17px;margin-bottom:16px}
.trust-list{display:flex;flex-direction:column;gap:16px}
.trust-list li{display:flex;gap:12px;font-size:14px;color:var(--text-2);line-height:1.75}
.trust-list .icon{color:var(--primary);margin-top:4px}
.contact-block{margin-top:24px;padding-top:20px;border-top:1px solid var(--line);font-size:14px;color:var(--text-2);display:flex;flex-direction:column;gap:8px}
.contact-block span{color:var(--text-3);font-size:13px}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--glass-border);background:rgba(9,17,30,.8);padding-top:60px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-3);line-height:1.85;max-width:340px}
.footer-title{font-size:15px;margin-bottom:16px;color:var(--text)}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a,.footer-links span{font-size:14px;color:var(--text-3)}
.footer-links a:hover{color:var(--primary)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  border-top:1px solid var(--line);padding-top:22px;padding-bottom:26px;font-size:13px;color:var(--text-3);
}

/* ---------- responsive ---------- */
@media(max-width:1199px){
  .split-layout{grid-template-columns:210px minmax(0,1fr);gap:36px}
}
@media(max-width:991px){
  .container{padding:0 24px}
  .section{padding:64px 0}
  .split-layout{grid-template-columns:minmax(0,1fr);gap:28px}
  .anchor-rail{
    position:static;display:flex;gap:10px;overflow-x:auto;padding:14px;border-radius:var(--r);
    -webkit-overflow-scrolling:touch;
  }
  .rail-title{display:none}
  .rail-link{white-space:nowrap;padding:8px 14px;background:rgba(255,255,255,.04);border-radius:var(--r-pill)}
  .rail-link::before{display:none}
  .rail-link.is-active{background:rgba(20,200,192,.14)}
  .rail-note{display:none}
  .form-grid{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media(max-width:767px){
  html{scroll-padding-top:96px}
  .channel-inner{display:none}
  .menu-toggle{display:grid}
  .text-link{display:none}
  .nav-drawer{display:none;flex-direction:column;padding:10px 0 18px;border-top:1px solid rgba(120,190,255,.1)}
  .nav-drawer.is-open{display:flex}
  .drawer-link{
    display:flex;align-items:center;min-height:48px;padding:0 4px;font-size:15px;color:var(--text-2);
    border-bottom:1px solid rgba(120,190,255,.08);
  }
  .drawer-link.is-active{color:var(--primary)}
  .hero-inner{padding-top:48px;padding-bottom:48px}
  .hero-metrics{gap:18px}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
  .entry{grid-template-columns:minmax(0,1fr);gap:20px;padding:28px 0}
  .entry-media img{aspect-ratio:16/9}
  .scene-grid{grid-template-columns:minmax(0,1fr);gap:18px}
  .compare-grid{grid-template-columns:minmax(0,1fr)}
  .band-inner{padding:26px 24px}
  .form-card,.trust-card{padding:24px}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
}
@media(max-width:575px){
  .container{padding:0 16px}
  body{font-size:16px}
  .brand-name{font-size:15px}
  .brand-sub{display:none}
  .hero-cta .g-btn{width:100%}
  .section{padding:48px 0}
  .band-cta{padding-bottom:48px}
  .band-inner .g-btn{width:100%}
}

/* roulang page: category3 */
/* ===================== 设计变量 ===================== */
:root{
  --bg:#F4F7FB;
  --surface:#FFFFFF;
  --surface-2:#EFF4FA;
  --surface-3:#F7FAFD;
  --text:#0F1B2D;
  --text-2:#54657D;
  --text-3:#8895A7;
  --border:#E2E9F1;
  --border-2:#CFDAE6;
  --primary:#0E8F92;
  --primary-2:#14C8C0;
  --primary-deep:#0B6F72;
  --primary-soft:#E3F6F5;
  --accent:#D9861B;
  --accent-soft:#FCF2E1;
  --violet:#5B6CFF;
  --success:#1F9D62;
  --danger:#DE4A42;
  --radius-xl:24px;
  --radius-lg:18px;
  --radius:14px;
  --radius-sm:10px;
  --shadow-sm:0 2px 6px rgba(15,27,45,.05);
  --shadow:0 12px 30px rgba(15,27,45,.07);
  --shadow-md:0 20px 44px rgba(15,27,45,.10);
  --container:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ===================== 基础 reset ===================== */
*,
*::before,
*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
::selection{background:var(--primary-soft);color:var(--primary-deep);}

/* ===================== 通用布局 ===================== */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}
.section{padding:80px 0;}
.section-alt{background:var(--surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border);}
.section-head{max-width:760px;margin-bottom:36px;}
.section-title{font-size:clamp(24px,2.6vw,32px);color:var(--text);}
.section-sub{margin-top:14px;font-size:16px;color:var(--text-2);line-height:1.85;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;
  border-radius:999px;
  background:var(--primary-soft);
  color:var(--primary-deep);
  font-size:13px;
  font-weight:600;
  letter-spacing:.02em;
}
.divider{height:1px;background:var(--border);border:0;margin:0;}

/* ===================== 图标 ===================== */
.svg-sprite{position:absolute;width:0;height:0;overflow:hidden;}
.icon{
  width:18px;height:18px;
  display:inline-block;
  vertical-align:-3px;
  fill:none;
  stroke:currentColor;
  stroke-width:1.8;
  stroke-linecap:round;
  stroke-linejoin:round;
  flex:none;
}
.icon-sm{width:14px;height:14px;}
.icon-lg{width:22px;height:22px;}
.icon-xl{width:26px;height:26px;}

/* ===================== 顶部信息条 ===================== */
.top-bar{
  background:linear-gradient(90deg,#0B6F72,#0E8F92 55%,#14A8A4);
  color:#EAFBF9;
  font-size:13px;
}
.top-bar-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;min-height:38px;padding-top:4px;padding-bottom:4px;
}
.top-bar-inner .icon{margin-right:6px;}
.top-link{color:#EAFBF9;font-weight:600;display:inline-flex;align-items:center;gap:6px;white-space:nowrap;}
.top-link .icon{transition:transform .22s var(--ease);}
.top-link:hover .icon{transform:translateX(4px);}

/* ===================== 页头与导航 ===================== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
  transition:box-shadow .25s var(--ease),background .25s var(--ease);
}
.site-header.is-stuck{box-shadow:0 10px 30px rgba(15,27,45,.08);}
.nav-top-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;min-height:74px;
}
.brand{display:flex;align-items:center;gap:12px;flex:none;}
.brand-mark{
  width:44px;height:44px;border-radius:13px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  color:#fff;
  box-shadow:0 8px 20px rgba(14,143,146,.28);
  flex:none;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-name{font-size:17px;font-weight:700;color:var(--text);letter-spacing:-.01em;}
.brand-sub{font-size:12px;color:var(--text-3);letter-spacing:.04em;}
.nav-tools{display:flex;align-items:center;gap:14px;}
.icon-btn{
  width:42px;height:42px;border-radius:12px;
  display:grid;place-items:center;
  border:1px solid var(--border);
  background:var(--surface);
  color:var(--text-2);
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.icon-btn:hover{border-color:rgba(14,143,146,.45);color:var(--primary);background:var(--primary-soft);}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--primary);
}
.text-link .icon{transition:transform .22s var(--ease);}
.text-link:hover .icon{transform:translateX(4px);}
.menu-btn{display:none;}

.channel-bar{border-top:1px solid var(--border);}
.channel-inner{
  display:flex;align-items:center;
  gap:10px;
  padding-top:10px;padding-bottom:10px;
  overflow-x:auto;
  scrollbar-width:none;
}
.channel-inner::-webkit-scrollbar{display:none;}
.chip{
  position:relative;
  display:inline-flex;align-items:center;justify-content:center;
  padding:8px 16px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:14px;font-weight:500;
  color:var(--text-2);
  white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.chip:hover{color:var(--primary-deep);background:var(--surface-2);}
.chip.is-active{
  color:var(--primary-deep);
  background:var(--primary-soft);
  border-color:rgba(14,143,146,.22);
  font-weight:600;
}
.chip.is-active::after{
  content:"";
  position:absolute;left:16px;right:16px;bottom:-11px;height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--primary-2));
}

/* ===================== 按钮 ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;
  border-radius:12px;
  font-size:15px;font-weight:600;
  cursor:pointer;
  border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:11px;}
.btn .icon{transition:transform .22s var(--ease);}
.btn:hover .icon{transform:translateX(3px);}
.btn-primary{
  color:#fff;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  box-shadow:0 10px 24px rgba(14,143,146,.28);
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 16px 32px rgba(14,143,146,.34);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 16px rgba(14,143,146,.24);}
.btn-ghost{
  color:var(--primary-deep);
  background:var(--surface);
  border-color:var(--border-2);
}
.btn-ghost:hover{border-color:rgba(14,143,146,.45);background:var(--primary-soft);}
.btn:disabled{opacity:.45;cursor:not-allowed;box-shadow:none;transform:none;}

/* ===================== 面包屑 ===================== */
.crumb-bar{padding-top:22px;}
.crumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3);flex-wrap:wrap;}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--primary);}
.crumb .sep{color:var(--border-2);}
.crumb .current{color:var(--text-3);}

/* ===================== 分类 Hero ===================== */
.cat-hero{
  position:relative;
  padding:34px 0 66px;
  background-image:
    linear-gradient(112deg,rgba(255,255,255,.97) 0%,rgba(255,255,255,.93) 42%,rgba(239,246,250,.80) 100%),
    url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--border);
}
.cat-hero-inner{max-width:800px;}
.cat-hero h1{
  margin-top:18px;
  font-size:clamp(28px,3.6vw,42px);
  line-height:1.28;
  color:var(--text);
}
.cat-hero h1 span{
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.cat-hero-lead{
  margin-top:20px;
  font-size:17px;
  line-height:1.9;
  color:var(--text-2);
  max-width:680px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;
  border-radius:999px;
  background:var(--surface);
  border:1px solid var(--border);
  font-size:13.5px;
  color:var(--text-2);
  box-shadow:var(--shadow-sm);
}
.tag .icon{color:var(--primary);}
.hero-note{
  margin-top:28px;
  display:flex;align-items:flex-start;gap:12px;
  padding:16px 20px;
  border-radius:var(--radius);
  background:rgba(255,255,255,.86);
  border:1px solid var(--border);
  font-size:14px;
  color:var(--text-2);
  max-width:720px;
}
.hero-note .icon{color:var(--accent);margin-top:3px;}

/* ===================== 现象速查卡 ===================== */
.sym-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.sym-card{
  display:flex;flex-direction:column;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:26px 24px;
  box-shadow:var(--shadow-sm);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.sym-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:rgba(14,143,146,.35);}
.sym-icon{
  width:44px;height:44px;border-radius:13px;
  display:grid;place-items:center;
  background:var(--primary-soft);
  color:var(--primary-deep);
  margin-bottom:16px;
}
.sym-card h3{font-size:17px;color:var(--text);}
.sym-card p{margin-top:10px;font-size:14px;color:var(--text-2);line-height:1.8;flex:1;}
.sym-link{
  margin-top:16px;
  display:inline-flex;align-items:center;gap:6px;
  font-size:13.5px;font-weight:600;color:var(--primary);
}
.sym-link .icon{transition:transform .22s var(--ease);}
.sym-link:hover .icon{transform:translateX(4px);}

/* ===================== 流程节点 ===================== */
.flow{display:grid;gap:26px;}
.flow-node{display:grid;grid-template-columns:86px 1fr;gap:20px;}
.flow-rail{position:relative;display:flex;justify-content:center;}
.flow-num{
  width:58px;height:58px;border-radius:18px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  color:#fff;
  font-size:19px;font-weight:700;
  font-variant-numeric:tabular-nums;
  box-shadow:0 12px 26px rgba(14,143,146,.26);
  position:relative;z-index:1;
}
.flow-node:not(:last-child) .flow-rail::after{
  content:"";
  position:absolute;top:64px;bottom:-26px;width:2px;
  border-radius:2px;
  background:linear-gradient(180deg,rgba(20,200,192,.55),rgba(20,200,192,.06));
}
.flow-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-xl);
  padding:28px 32px;
  box-shadow:var(--shadow-sm);
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.flow-card:hover{border-color:rgba(14,143,146,.30);box-shadow:var(--shadow);}
.flow-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.flow-head h3{font-size:21px;color:var(--text);}
.flow-badge{
  padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;
  background:var(--surface-2);color:var(--text-2);
}
.flow-card > p{margin-top:14px;font-size:15.5px;color:var(--text-2);line-height:1.85;}
.flow-points{margin-top:18px;display:grid;gap:10px;}
.flow-points li{
  position:relative;
  padding-left:26px;
  font-size:14.5px;
  color:var(--text-2);
  line-height:1.75;
}
.flow-points li::before{
  content:"";
  position:absolute;left:0;top:9px;
  width:9px;height:9px;border-radius:3px;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
}
.flow-figure{
  margin-top:20px;
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--border);
  background:
    linear-gradient(135deg,#E8F4F4,#F5FAFC);
}
.flow-figure img{width:100%;height:210px;object-fit:cover;}

/* ===================== 对比小卡 ===================== */
.compare{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.compare-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:28px 28px 26px;
  box-shadow:var(--shadow-sm);
}
.compare-card.is-accent{
  border-color:rgba(14,143,146,.34);
  box-shadow:0 18px 40px rgba(14,143,146,.10);
  background:linear-gradient(180deg,#FFFFFF 0%,#F3FBFA 100%);
}
.compare-label{
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 13px;border-radius:999px;
  font-size:12.5px;font-weight:600;
  background:var(--surface-2);color:var(--text-2);
}
.compare-card.is-accent .compare-label{background:var(--primary-soft);color:var(--primary-deep);}
.compare-card h3{margin-top:16px;font-size:19px;color:var(--text);}
.compare-list{margin-top:16px;display:grid;gap:12px;}
.compare-list li{
  display:flex;gap:10px;
  font-size:14.5px;color:var(--text-2);line-height:1.75;
}
.compare-list .icon{color:var(--primary);margin-top:5px;}
.compare-card.is-accent .compare-list .icon{color:var(--accent);}

/* ===================== FAQ ===================== */
.faq-list{display:grid;gap:14px;max-width:900px;}
.faq-item{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  overflow:hidden;
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.faq-item[open]{
  border-color:rgba(14,143,146,.40);
  box-shadow:0 14px 32px rgba(14,143,146,.10);
}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;
  cursor:pointer;
  font-size:16px;font-weight:600;
  color:var(--text);
  list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-plus{
  width:26px;height:26px;border-radius:8px;flex:none;
  display:grid;place-items:center;
  background:var(--primary-soft);
  color:var(--primary-deep);
  font-size:16px;font-weight:700;line-height:1;
  transition:transform .26s var(--ease);
}
.faq-item[open] .faq-plus{transform:rotate(45deg);}
.faq-body{padding:0 24px 22px;font-size:15px;color:var(--text-2);line-height:1.9;}

/* ===================== 反馈表单 ===================== */
.apply-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:24px;align-items:start;}
.form-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-xl);
  padding:32px;
  box-shadow:var(--shadow);
}
.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(--text);margin-bottom:8px;}
.field .hint{font-weight:400;color:var(--text-3);font-size:13px;margin-left:6px;}
.field input[type="text"],
.field input[type="tel"],
.field select,
.field textarea{
  width:100%;
  padding:12px 14px;
  border-radius:12px;
  border:1px solid var(--border-2);
  background:var(--surface-3);
  font-size:15px;
  color:var(--text);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.field textarea{min-height:120px;resize:vertical;line-height:1.75;}
.field input::placeholder,
.field textarea::placeholder{color:#A9B5C4;}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--primary);
  background:#fff;
  box-shadow:0 0 0 3px rgba(14,143,146,.14);
}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--text-2);line-height:1.7;}
.check-row input{width:17px;height:17px;margin-top:4px;accent-color:var(--primary);flex:none;}
.form-actions{margin-top:22px;display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.form-tip{font-size:13px;color:var(--text-3);}

.trust-card{
  background:linear-gradient(180deg,#0F2B31 0%,#0E3B3E 100%);
  border-radius:var(--radius-xl);
  padding:32px;
  color:#CFE7E5;
  box-shadow:var(--shadow-md);
}
.trust-card h3{font-size:20px;color:#fff;}
.trust-card > p{margin-top:12px;font-size:14.5px;color:#9CC3C0;line-height:1.85;}
.trust-list{margin-top:22px;display:grid;gap:14px;}
.trust-list li{display:flex;gap:12px;font-size:14.5px;line-height:1.75;}
.trust-list .icon{color:var(--primary-2);margin-top:4px;}
.trust-contact{
  margin-top:26px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.14);
  display:grid;gap:8px;
  font-size:14px;
  color:#B6D6D4;
}
.trust-contact strong{color:#fff;font-weight:600;}

/* ===================== 页脚 ===================== */
.site-footer{background:#0C1725;color:#93A3B8;}
.footer-grid{
  display:grid;
  grid-template-columns:1.65fr 1fr 1fr 1fr;
  gap:40px;
  padding-top:64px;
  padding-bottom:44px;
}
.site-footer .brand-mark{box-shadow:none;}
.site-footer .brand-name{color:#fff;}
.site-footer .brand-sub{color:#7B8CA3;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:#8DA0B8;max-width:380px;}
.footer-title{font-size:15px;color:#fff;margin-bottom:16px;}
.footer-links{display:grid;gap:2px;}
.footer-links a,
.footer-links span{
  display:block;
  font-size:14px;
  color:#9AAABF;
  padding:6px 0;
  transition:color .2s var(--ease);
}
.footer-links a:hover{color:#4FD8D2;}
.footer-links span{color:#7B8CA3;font-size:13.5px;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.08);
  padding-top:22px;padding-bottom:28px;
  font-size:13px;color:#6F8098;
}

/* ===================== 响应式 ===================== */
@media (max-width:1199px){
  .container{padding-left:24px;padding-right:24px;}
  .sym-grid{grid-template-columns:repeat(2,1fr);}
  .apply-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:991px){
  .section{padding:64px 0;}
  .cat-hero{padding:26px 0 52px;}
  .flow-node{grid-template-columns:70px 1fr;gap:16px;}
  .flow-num{width:52px;height:52px;border-radius:16px;font-size:17px;}
  .flow-node:not(:last-child) .flow-rail::after{top:58px;}
  .apply-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .nav-tools .text-link{display:none;}
}
@media (max-width:860px){
  .menu-btn{display:grid;}
  .channel-bar{display:none;}
  .site-header.menu-open .channel-bar{display:block;border-top:1px solid var(--border);}
  .site-header.menu-open .channel-inner{
    flex-direction:column;align-items:stretch;gap:6px;
    padding-top:10px;padding-bottom:16px;overflow:visible;
  }
  .site-header.menu-open .chip{
    min-height:48px;justify-content:flex-start;
    border-radius:12px;padding:12px 16px;font-size:15px;
  }
  .site-header.menu-open .chip.is-active::after{display:none;}
  .site-header.menu-open .chip.is-active{background:var(--primary-soft);}
}
@media (max-width:768px){
  .sym-grid{grid-template-columns:1fr;}
  .compare{grid-template-columns:1fr;}
  .form-row{grid-template-columns:1fr;}
  .form-card,.trust-card{padding:24px;}
  .flow-card{padding:22px 20px;border-radius:var(--radius-lg);}
  .flow-node{grid-template-columns:56px 1fr;gap:14px;}
  .flow-num{width:44px;height:44px;border-radius:14px;font-size:15px;}
  .flow-node:not(:last-child) .flow-rail::after{top:50px;bottom:-26px;}
  .flow-head h3{font-size:18.5px;}
  .flow-figure img{height:180px;}
  .cat-hero-lead{font-size:16px;}
  .hero-note{font-size:13.5px;padding:14px 16px;}
}
@media (max-width:600px){
  .container{padding-left:16px;padding-right:16px;}
  .nav-top-inner{min-height:66px;gap:12px;}
  .brand-mark{width:40px;height:40px;border-radius:12px;}
  .brand-name{font-size:15.5px;}
  .brand-sub{display:none;}
  .section{padding:48px 0;}
  .section-head{margin-bottom:26px;}
  .top-bar-inner{font-size:12px;}
  .top-bar-inner span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
  .btn{width:100%;}
  .nav-tools .btn{width:auto;}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-top:48px;}
  .footer-brand p{max-width:none;}
  .faq-item summary{font-size:15px;padding:16px 18px;}
  .faq-body{padding:0 18px 18px;font-size:14.5px;}
}
@media (max-width:400px){
  .hero-tags{gap:8px;}
  .tag{font-size:12.5px;padding:6px 12px;}
}