/* roulang page: index */
:root{
  --bg:#060B18;
  --bg-2:#0A1120;
  --glass:rgba(18,28,52,.58);
  --glass-strong:rgba(12,20,40,.88);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.18);
  --brand:#3D6CFF;
  --brand-hover:#5C84FF;
  --cyan:#14D9C6;
  --orange:#FF7A45;
  --text:#EDF3FF;
  --text-2:#9FB0CC;
  --text-3:#6E7E99;
  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;
  --shadow:0 12px 32px rgba(0,0,0,.35);
  --shadow-hover:0 20px 48px rgba(0,0,0,.45);
  --glow:0 8px 30px rgba(20,217,198,.35);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Inter","DIN Alternate","Helvetica Neue",Arial,sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.85;
  color:var(--text);
  background-color:var(--bg);
  background-image:
    radial-gradient(620px 420px at 10% 4%, rgba(61,108,255,.18), transparent 70%),
    radial-gradient(720px 520px at 92% 18%, rgba(20,217,198,.14), transparent 72%),
    radial-gradient(560px 460px at 50% 96%, rgba(61,108,255,.12), transparent 74%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1320px}}
.section{padding:clamp(64px,9vw,120px) 0;position:relative;scroll-margin-top:96px}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:clamp(32px,4vw,44px)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;background:rgba(255,255,255,.05);border:1px solid var(--line);font-size:13px;color:var(--cyan);letter-spacing:.02em}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px rgba(20,217,198,.9)}
.section-title{font-size:clamp(26px,3.4vw,38px);margin-top:18px}
.section-sub{color:var(--text-2);font-size:16px;margin-top:14px;max-width:640px}
.link-arrow{display:inline-flex;align-items:center;gap:8px;color:var(--cyan);font-size:15px;font-weight:600;white-space:nowrap;transition:color .18s var(--ease)}
.link-arrow .arrow{display:inline-block;transition:transform .18s var(--ease)}
.link-arrow:hover{color:#5CEBE0}
.link-arrow:hover .arrow{transform:translateX(3px)}

/* ============ 导航 ============ */
.site-header{position:fixed;top:0;left:0;right:0;z-index:1030;transition:background .25s var(--ease),backdrop-filter .25s var(--ease)}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:transparent;transition:background .25s var(--ease)}
.site-header.is-scrolled{background:rgba(8,14,28,.74);backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%)}
.site-header.is-scrolled::after{background:var(--line)}
.nav-wrap{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:20px;height:76px}
.nav-side{display:flex;align-items:center;gap:28px}
.nav-side.right{justify-content:flex-end}
.nav-link{position:relative;font-size:15px;color:var(--text-2);padding:6px 0;white-space:nowrap;transition:color .18s var(--ease)}
.nav-link:hover{color:var(--text)}
.nav-link.active{color:var(--text)}
.nav-link.active::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;background:var(--cyan)}
.brand{display:inline-flex;align-items:center;gap:10px;justify-self:center;font-size:18px;font-weight:700;color:var(--text);white-space:nowrap;letter-spacing:.01em}
.brand:hover{color:var(--text)}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:11px;background:linear-gradient(135deg,rgba(61,108,255,.4),rgba(20,217,198,.28));border:1px solid var(--line-strong);flex:none}
.btn-nav{padding:10px 20px;border-radius:var(--r-sm);background:linear-gradient(135deg,var(--brand),var(--cyan));color:#fff;font-size:14px;font-weight:600;white-space:nowrap;transition:transform .18s var(--ease),box-shadow .18s var(--ease)}
.btn-nav:hover{transform:translateY(-2px);box-shadow:var(--glow);color:#fff}
.menu-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line-strong);background:rgba(255,255,255,.04);color:var(--text);align-items:center;justify-content:center}
.mobile-drawer{display:none;background:rgba(8,14,28,.97);backdrop-filter:blur(18px);border-top:1px solid var(--line);padding:8px 0 18px}
.mobile-drawer.open{display:block}
.mobile-drawer a{display:block;line-height:48px;font-size:16px;color:var(--text-2);padding:0 24px}
.mobile-drawer a.active,.mobile-drawer a:hover{color:var(--text);background:rgba(255,255,255,.04)}
.mobile-drawer .btn-nav{display:block;text-align:center;margin:12px 24px 0;line-height:44px}

/* ============ 按钮 ============ */
.btn-glow,.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 26px;border-radius:var(--r-sm);font-size:16px;font-weight:600;border:0;cursor:pointer;transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease)}
.btn-glow{background:linear-gradient(135deg,var(--brand),var(--cyan));color:#fff;box-shadow:0 10px 26px rgba(61,108,255,.28)}
.btn-glow:hover{transform:translateY(-2px);box-shadow:var(--glow);color:#fff}
.btn-ghost{background:transparent;border:1px solid var(--line-strong);color:var(--text)}
.btn-ghost:hover{background:rgba(255,255,255,.06);border-color:var(--cyan);transform:translateY(-2px);color:var(--text)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-block{width:100%}

/* ============ Hero ============ */
.hero{position:relative;padding:170px 0 84px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.hero h1{font-size:clamp(30px,5vw,56px);line-height:1.2;margin-top:22px}
.hero-sub{color:var(--text-2);font-size:17px;margin-top:16px;max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-metrics{display:flex;flex-wrap:wrap;margin-top:38px}
.hero-metrics .metric{padding:0 24px;border-left:1px solid var(--line)}
.hero-metrics .metric:first-child{padding-left:0;border-left:0}
.metric-num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:24px;font-weight:700;color:var(--text)}
.metric-label{font-size:13px;color:var(--text-3);margin-top:2px}
.hero-visual{position:relative}
.hero-card{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line-strong);background:var(--glass);backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);box-shadow:var(--shadow)}
.hero-card img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-card::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,11,24,.02) 30%,rgba(6,11,24,.74));pointer-events:none}
.hero-card .hero-card-tag{position:absolute;left:18px;bottom:18px;z-index:2;display:flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;background:rgba(10,17,32,.8);border:1px solid var(--line-strong);font-size:12px;color:var(--text-2)}
.float-card{position:absolute;display:flex;align-items:center;gap:10px;padding:12px 16px;border-radius:14px;background:var(--glass-strong);border:1px solid var(--line-strong);backdrop-filter:blur(14px);font-size:13px;color:var(--text-2);box-shadow:0 12px 30px rgba(0,0,0,.4);z-index:3}
.float-card.fc-1{left:-18px;bottom:38px}
.float-card.fc-2{right:-16px;top:34px}
.status-dot{width:8px;height:8px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 4px rgba(20,217,198,.18);flex:none}
.status-dot.orange{background:var(--orange);box-shadow:0 0 0 4px rgba(255,122,69,.16)}

/* ============ 锚点条 ============ */
.anchor-bar{position:sticky;top:76px;z-index:1020;background:rgba(6,11,24,.82);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.anchor-scroll{display:flex;gap:10px;overflow-x:auto;padding:12px 0;scrollbar-width:none}
.anchor-scroll::-webkit-scrollbar{display:none}
.anchor-pill{display:inline-flex;align-items:center;padding:8px 18px;border-radius:999px;border:1px solid transparent;background:rgba(255,255,255,.04);font-size:14px;color:var(--text-2);white-space:nowrap;transition:all .18s var(--ease)}
.anchor-pill:hover{color:var(--text);background:rgba(255,255,255,.08)}
.anchor-pill.active{border-color:rgba(20,217,198,.6);background:rgba(20,217,198,.12);color:var(--cyan)}

/* ============ 卖点区 ============ */
.point-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.point-list{padding-left:18px}
.point-item{position:relative;display:flex;gap:22px;padding:24px 0;border-bottom:1px solid var(--line)}
.point-item:first-child{padding-top:6px}
.point-item::before{content:"";position:absolute;left:-18px;top:34px;width:3px;height:0;border-radius:3px;background:var(--cyan);transition:height .22s var(--ease)}
.point-item:hover::before{height:34px}
.point-item:first-child::before{top:16px}
.point-num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:42px;line-height:1;font-weight:700;color:rgba(255,255,255,.12);flex:none;transition:color .22s var(--ease)}
.point-item:hover .point-num{color:rgba(20,217,198,.55)}
.point-title{font-size:19px;font-weight:600}
.point-desc{color:var(--text-2);font-size:15px;margin-top:8px}
.point-visual{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line-strong);background:var(--glass);box-shadow:var(--shadow)}
.point-visual img{width:100%;aspect-ratio:4/3;object-fit:cover}
.point-visual .overlay-tag{position:absolute;left:20px;top:20px;padding:7px 14px;border-radius:999px;background:rgba(10,17,32,.78);border:1px solid var(--line-strong);font-size:12px;color:var(--cyan)}
.point-visual .overlay-note{position:absolute;left:20px;right:20px;bottom:20px;padding:16px 18px;border-radius:14px;background:rgba(10,17,32,.82);border:1px solid var(--line);backdrop-filter:blur(12px);font-size:14px;color:var(--text-2)}

/* ============ 演示区 ============ */
.demo-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:44px 0}
.demo-row+.demo-row{border-top:1px solid var(--line)}
.demo-media{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line-strong);background:var(--glass);box-shadow:var(--shadow)}
.demo-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s var(--ease)}
.demo-media:hover img{transform:scale(1.04)}
.demo-row.flip .demo-media{order:2}
.demo-title{font-size:clamp(21px,2.4vw,26px);margin-top:16px}
.demo-text{color:var(--text-2);font-size:16px;margin-top:14px}
.dotted{list-style:none;padding:0;margin:20px 0 0}
.dotted li{position:relative;padding-left:22px;margin-bottom:12px;color:var(--text-2);font-size:15.5px}
.dotted li::before{content:"";position:absolute;left:2px;top:13px;width:7px;height:2px;border-radius:2px;background:var(--cyan)}
.demo-link{margin-top:24px}

/* ============ 证据区 ============ */
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:0;padding:8px 0 40px}
.stat-item{padding:0 28px;border-left:1px solid var(--line)}
.stat-item:first-child{padding-left:0;border-left:0}
.stat-num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:clamp(36px,5vw,58px);font-weight:700;line-height:1.05;color:var(--text)}
.stat-num span{color:var(--orange);font-size:.5em;margin-left:4px;font-weight:600}
.stat-label{color:var(--text-3);font-size:14px;margin-top:10px}
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.quote-card{background:var(--glass);border:1px solid var(--line);border-left:3px solid var(--cyan);border-radius:var(--r-md);padding:26px 26px 22px;backdrop-filter:blur(18px);transition:transform .2s var(--ease),border-color .2s var(--ease)}
.quote-card:hover{transform:translateY(-4px);border-color:rgba(20,217,198,.4)}
.quote-text{font-size:15.5px;color:var(--text-2)}
.quote-from{margin-top:16px;font-size:13px;color:var(--text-3)}
.badge-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.badge-item{display:flex;align-items:center;gap:8px;padding:10px 18px;border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.03);font-size:13px;color:var(--text-3);filter:grayscale(1);transition:all .2s var(--ease)}
.badge-item:hover{filter:grayscale(0);color:var(--text-2);border-color:var(--line-strong)}

/* ============ 最新信息 ============ */
.news-card{display:flex;flex-direction:column;height:100%;background:var(--glass);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;backdrop-filter:blur(18px);transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease)}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(20,217,198,.38)}
.news-thumb{position:relative;overflow:hidden}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .5s var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.badge-pill{position:absolute;left:14px;top:14px;padding:5px 12px;border-radius:999px;background:rgba(10,17,32,.8);border:1px solid var(--line-strong);font-size:11.5px;color:var(--cyan);backdrop-filter:blur(10px)}
.news-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1}
.news-title{font-size:17px;font-weight:600;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-desc{color:var(--text-3);font-size:15px;line-height:1.75;margin-top:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;gap:8px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3)}
.news-meta .arrow{margin-left:auto;color:var(--cyan);transition:transform .18s var(--ease)}
.news-card:hover .news-meta .arrow{transform:translateX(4px)}
.dot{width:3px;height:3px;border-radius:50%;background:var(--text-3);flex:none}
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:60px 24px;background:var(--glass);border:1px dashed var(--line-strong);border-radius:var(--r-lg)}
.empty-icon{width:56px;height:56px;border-radius:16px;display:flex;align-items:center;justify-content:center;border:1px solid var(--line-strong);background:rgba(255,255,255,.04);color:var(--cyan);font-size:22px;margin-bottom:18px}
.empty-text{font-size:16px;color:var(--text-2)}
.empty-sub{font-size:14px;color:var(--text-3);margin-top:8px}
.line-ph{display:block;height:8px;width:220px;border-radius:999px;background:rgba(255,255,255,.05);margin-top:14px}
.line-ph.short{width:140px}

/* ============ 价格 ============ */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.plan-card{position:relative;background:var(--glass);border:1px solid var(--line);border-radius:var(--r-lg);padding:30px 28px 32px;backdrop-filter:blur(18px);transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease)}
.plan-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.plan-card.featured{transform:translateY(-12px);border-color:rgba(20,217,198,.5);box-shadow:0 0 0 1px rgba(20,217,198,.22),0 20px 48px rgba(0,0,0,.45)}
.plan-card.featured:hover{transform:translateY(-16px)}
.plan-flag{position:absolute;right:24px;top:-12px;padding:5px 14px;border-radius:999px;background:linear-gradient(135deg,var(--brand),var(--cyan));font-size:12px;font-weight:600;color:#fff}
.plan-name{font-size:17px;font-weight:600}
.plan-desc{color:var(--text-3);font-size:14px;margin-top:8px}
.plan-price{display:flex;align-items:baseline;gap:6px;margin-top:22px;font-family:var(--font-num);font-variant-numeric:tabular-nums}
.plan-price .value{font-size:38px;font-weight:700;color:var(--orange);line-height:1}
.plan-price .unit{font-size:14px;color:var(--text-3)}
.plan-lines{margin-top:24px;padding-top:22px;border-top:1px solid var(--line)}
.plan-lines li{position:relative;padding-left:26px;margin-bottom:12px;font-size:15px;color:var(--text-2)}
.plan-lines li::before{content:"";position:absolute;left:4px;top:9px;width:10px;height:5px;border-left:2px solid var(--cyan);border-bottom:2px solid var(--cyan);transform:rotate(-45deg)}
.plan-actions{margin-top:26px}

/* ============ FAQ ============ */
.faq-wrap{max-width:920px;margin:0 auto}
.faq-item{background:var(--glass);border:1px solid var(--line);border-radius:14px;margin-bottom:14px;overflow:hidden;backdrop-filter:blur(18px);transition:border-color .2s var(--ease)}
.faq-item.open{border-color:rgba(20,217,198,.36)}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%;padding:20px 24px;background:none;border:0;color:var(--text);font-size:17px;font-weight:500;text-align:left;cursor:pointer}
.faq-q:hover{color:#fff}
.faq-icon{position:relative;width:18px;height:18px;flex:none}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--cyan);border-radius:2px;transition:transform .24s var(--ease),opacity .24s var(--ease)}
.faq-icon::before{left:0;top:8px;width:18px;height:1.5px}
.faq-icon::after{left:8px;top:0;width:1.5px;height:18px}
.faq-item.open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-item.open .faq-icon::before{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a-inner{padding:0 24px 24px;color:var(--text-2);font-size:15px;line-height:1.9}
.faq-a-inner::before{content:"";display:block;height:1px;background:linear-gradient(90deg,rgba(20,217,198,.65),transparent);margin-bottom:16px}

/* ============ 联系 ============ */
.contact-band{background:linear-gradient(135deg,rgba(10,17,32,.92),rgba(20,217,198,.12));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.contact-list{margin-top:26px}
.contact-list li{display:flex;gap:14px;align-items:flex-start;margin-bottom:16px;color:var(--text-2);font-size:15.5px}
.contact-list i{color:var(--cyan);margin-top:6px;flex:none}
.form-card{background:var(--glass);border:1px solid var(--line-strong);border-radius:var(--r-lg);padding:30px;backdrop-filter:blur(18px) saturate(140%);box-shadow:var(--shadow)}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;color:var(--text-2);margin-bottom:8px}
.field-input{width:100%;padding:13px 16px;border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text);font-size:15px;font-family:inherit;outline:none;transition:border-color .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease)}
.field-input::placeholder{color:var(--text-3)}
.field-input:focus{border-color:var(--cyan);background:rgba(255,255,255,.06);box-shadow:0 0 0 4px rgba(20,217,198,.16)}
select.field-input{appearance:none;-webkit-appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 20px) calc(50% - 2px),calc(100% - 14px) calc(50% - 2px);background-size:6px 6px,6px 6px;background-repeat:no-repeat}
select.field-input option{background:#0A1120;color:var(--text)}
textarea.field-input{resize:vertical;min-height:120px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-note{font-size:13px;color:var(--text-3);margin-top:14px;text-align:center}

/* ============ 页脚 ============ */
.site-footer{border-top:1px solid var(--line);background:rgba(6,11,24,.7);padding-top:clamp(48px,6vw,72px)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:44px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--text)}
.footer-desc{color:var(--text-3);font-size:14.5px;line-height:1.9;margin-top:16px;max-width:360px}
.footer-contact{margin-top:20px;font-size:14px;color:var(--text-2)}
.footer-contact span{display:block;margin-bottom:6px}
.footer-title{font-size:15px;font-weight:600;margin-bottom:18px}
.footer-links li{margin-bottom:12px}
.footer-links a{font-size:14.5px;color:var(--text-3);transition:color .18s var(--ease)}
.footer-links a:hover{color:var(--cyan)}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;padding:20px 0;border-top:1px solid var(--line);font-size:13px;color:var(--text-3)}
.to-top{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:50%;border:1px solid var(--line-strong);background:rgba(255,255,255,.04);color:var(--text-2);transition:all .18s var(--ease)}
.to-top:hover{color:var(--cyan);border-color:var(--cyan);transform:translateY(-2px)}

/* ============ 浮动 CTA ============ */
.float-cta{position:fixed;right:28px;bottom:28px;z-index:1040;display:inline-flex;align-items:center;gap:10px;height:48px;padding:0 22px;border-radius:999px;background:rgba(12,20,40,.85);border:1px solid rgba(20,217,198,.5);color:var(--text);font-size:14.5px;font-weight:600;backdrop-filter:blur(14px);box-shadow:0 10px 30px rgba(0,0,0,.4);opacity:0;transform:translateY(14px);pointer-events:none;transition:opacity .28s var(--ease),transform .28s var(--ease),box-shadow .2s var(--ease)}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto}
.float-cta:hover{box-shadow:var(--glow);color:#fff}
.float-cta i{color:var(--cyan)}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .hero{padding-top:150px}
  .point-grid{gap:40px}
  .demo-row{gap:40px}
  .quote-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:991px){
  .nav-wrap{grid-template-columns:auto 1fr auto;height:64px}
  .nav-side{display:none}
  .brand{justify-self:start;font-size:16px}
  .menu-toggle{display:inline-flex}
  .anchor-bar{top:64px}
  .hero{padding:118px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-sub{max-width:none}
  .hero-visual{max-width:620px}
  .float-card.fc-1{left:0}
  .float-card.fc-2{right:0}
  .point-grid{grid-template-columns:1fr}
  .point-visual{order:-1}
  .demo-row{grid-template-columns:1fr;gap:28px}
  .demo-row.flip .demo-media{order:0}
  .stat-row{grid-template-columns:repeat(2,1fr);gap:28px 0}
  .stat-item:nth-child(3){border-left:0;padding-left:0}
  .plan-grid{grid-template-columns:1fr;gap:20px}
  .plan-card.featured{transform:none;order:-1}
  .plan-card.featured:hover{transform:translateY(-4px)}
  .contact-grid{grid-template-columns:1fr;gap:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{font-size:16px}
  .section{padding:56px 0}
  .hero h1{font-size:clamp(30px,7vw,36px)}
  .hero-metrics{flex-wrap:wrap;gap:18px 0}
  .hero-metrics .metric{padding:0 18px}
  .quote-grid{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .float-cta{right:0;left:0;bottom:0;border-radius:0;height:56px;justify-content:center;padding-bottom:env(safe-area-inset-bottom);border-left:0;border-right:0;border-bottom:0}
}
@media (max-width:575px){
  .hero{padding:104px 0 54px}
  .hero-actions .btn-glow,.hero-actions .btn-ghost{width:100%}
  .hero-visual{display:none}
  .stat-row{grid-template-columns:1fr;gap:24px}
  .stat-item{padding-left:0;border-left:0;border-bottom:1px solid var(--line);padding-bottom:18px}
  .stat-item:last-child{border-bottom:0}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .plan-card{padding:26px 22px}
  .form-card{padding:22px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --bg:#060B18;
  --section:#0A1120;
  --glass:rgba(18,28,52,.58);
  --glass-soft:rgba(255,255,255,.04);
  --line:rgba(255,255,255,.08);
  --primary:#3D6CFF;
  --primary-h:#5C84FF;
  --cyan:#14D9C6;
  --orange:#FF7A45;
  --text:#EDF3FF;
  --text-2:#9FB0CC;
  --text-3:#6E7E99;
  --r-card:18px;
  --r-btn:12px;
  --r-img:14px;
  --sh-card:0 12px 32px rgba(0,0,0,.35);
  --sh-hover:0 20px 48px rgba(0,0,0,.45);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Inter","DIN Alternate",ui-monospace,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(680px 420px at 12% -6%,rgba(61,108,255,.16),transparent 62%),
    radial-gradient(620px 420px at 92% 8%,rgba(20,217,198,.12),transparent 60%);
  z-index:0;
}
body>*{position:relative;z-index:1;}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .18s ease-out;}
a:hover{color:var(--cyan);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}
section{scroll-margin-top:96px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  border-bottom:1px solid transparent;
  transition:background .24s ease-out,border-color .24s ease-out,backdrop-filter .24s ease-out;
}
.site-header.scrolled{
  background:rgba(6,11,24,.74);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom-color:var(--line);
}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:24px;
  height:76px;
}
.nav-side{display:flex;align-items:center;gap:26px;}
.nav-side.left{grid-column:1;grid-row:1;justify-self:start;}
.nav-side.right{grid-column:3;grid-row:1;justify-self:end;}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--text-2);
  padding:6px 0;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-2px;
  height:2px;
  border-radius:2px;
  background:var(--cyan);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .2s ease-out;
}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--text);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}
.brand{
  grid-column:2;grid-row:1;
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  letter-spacing:.01em;
  color:var(--text);
  white-space:nowrap;
}
.brand:hover{color:var(--text);}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:34px;border-radius:10px;background:rgba(61,108,255,.14);border:1px solid rgba(61,108,255,.28);}
.nav-toggle{
  display:none;
  grid-column:3;grid-row:1;
  justify-self:end;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:var(--glass-soft);
  cursor:pointer;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  transition:border-color .18s ease-out,background .18s ease-out;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-2);transition:background .18s ease-out;}
.nav-toggle:hover{border-color:rgba(20,217,198,.5);}
.nav-toggle:hover span{background:var(--cyan);}
.nav-drawer{
  position:fixed;
  top:0;right:0;
  width:min(86vw,360px);
  height:100vh;
  padding:88px 22px 36px;
  background:rgba(10,17,32,.97);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-left:1px solid var(--line);
  display:flex;
  flex-direction:column;
  gap:6px;
  transform:translateX(100%);
  transition:transform .26s ease-out;
  z-index:1055;
}
.nav-drawer.open{transform:translateX(0);}
.nav-drawer .nav-link{height:48px;display:flex;align-items:center;padding:0 14px;border-radius:10px;font-size:16px;}
.nav-drawer .nav-link::after{display:none;}
.nav-drawer .nav-link.active{background:rgba(20,217,198,.1);color:var(--cyan);}
.nav-mask{
  position:fixed;inset:0;
  background:rgba(3,6,14,.62);
  opacity:0;visibility:hidden;
  transition:opacity .24s ease-out,visibility .24s ease-out;
  z-index:1050;
}
.nav-mask.show{opacity:1;visibility:visible;}

/* ============ 按钮 ============ */
.rl-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;
  cursor:pointer;
  border:1px solid transparent;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background .18s ease-out,border-color .18s ease-out,color .18s ease-out;
}
.rl-btn-sm{height:38px;padding:0 16px;font-size:14px;}
.rl-btn-primary{
  background:linear-gradient(135deg,var(--primary) 0%,var(--cyan) 100%);
  color:#04121A;
}
.rl-btn-primary:hover{
  color:#04121A;
  transform:translateY(-2px);
  box-shadow:0 8px 30px rgba(20,217,198,.35);
}
.rl-btn-ghost{
  background:transparent;
  border-color:rgba(255,255,255,.18);
  color:var(--text);
}
.rl-btn-ghost:hover{
  background:rgba(255,255,255,.06);
  border-color:rgba(20,217,198,.6);
  color:var(--text);
}
.rl-text-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  color:var(--cyan);
}
.rl-text-link i{transition:transform .18s ease-out;}
.rl-text-link:hover i{transform:translateX(3px);}

/* ============ 文章头部 ============ */
.article-hero{padding:clamp(32px,5vw,60px) 0 0;}
.breadcrumb-line{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:9px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:24px;
}
.breadcrumb-line a{color:var(--text-3);}
.breadcrumb-line a:hover{color:var(--cyan);}
.breadcrumb-line .sep{opacity:.55;}
.breadcrumb-line .current{
  color:var(--text-2);
  max-width:min(100%,520px);
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.article-head h1{
  font-size:clamp(26px,3.6vw,40px);
  line-height:1.32;
  font-weight:700;
  margin-bottom:20px;
  max-width:920px;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
  padding-bottom:22px;
  border-bottom:1px solid var(--line);
  font-size:14px;
  color:var(--text-2);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--text-3);}
.badge-pill{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
  background:rgba(20,217,198,.1);
  border:1px solid rgba(20,217,198,.32);
  color:var(--cyan);
}

/* ============ 正文 ============ */
.article-main{padding:0;}
.article-wrap{
  max-width:780px;
  margin:0 auto;
  padding:clamp(32px,5vw,52px) 0 clamp(40px,6vw,72px);
}
.article-body{
  font-size:17px;
  line-height:1.95;
  color:#DCE6F7;
  word-break:break-word;
}
.article-body p{margin:0 0 20px;}
.article-body h2{
  position:relative;
  font-size:clamp(21px,2.5vw,26px);
  font-weight:700;
  color:var(--text);
  margin:40px 0 18px;
  padding-left:15px;
  line-height:1.45;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.3em;
  width:4px;
  height:1em;
  border-radius:2px;
  background:var(--cyan);
}
.article-body h3{
  font-size:20px;
  font-weight:600;
  color:var(--text);
  margin:28px 0 14px;
  line-height:1.5;
}
.article-body h4{font-size:17px;font-weight:600;color:var(--text);margin:22px 0 12px;}
.article-body ul{margin:0 0 20px;}
.article-body ul li{
  position:relative;
  padding-left:20px;
  margin-bottom:10px;
}
.article-body ul li::before{
  content:"";
  position:absolute;
  left:2px;
  top:.78em;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--cyan);
}
.article-body ol{margin:0 0 20px;counter-reset:rl-ol;}
.article-body ol li{
  position:relative;
  padding-left:28px;
  margin-bottom:10px;
  counter-increment:rl-ol;
}
.article-body ol li::before{
  content:counter(rl-ol);
  position:absolute;
  left:0;
  top:0;
  font-family:var(--font-num);
  font-size:14px;
  font-weight:600;
  color:var(--cyan);
}
.article-body blockquote{
  margin:24px 0;
  padding:18px 22px;
  background:var(--glass);
  border-left:3px solid var(--cyan);
  border-radius:0 var(--r-img) var(--r-img) 0;
  color:var(--text-2);
  font-style:normal;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  border-radius:var(--r-img);
  margin:26px auto;
  border:1px solid var(--line);
}
.article-body figure{margin:26px 0;}
.article-body figcaption{
  text-align:center;
  font-size:13px;
  color:var(--text-3);
  margin-top:10px;
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:24px 0;
  font-size:15px;
}
.article-body th,.article-body td{
  padding:12px 14px;
  border-bottom:1px solid var(--line);
  text-align:left;
  vertical-align:top;
}
.article-body th{color:var(--text);font-weight:600;}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.03);}
.article-body code{
  background:rgba(255,255,255,.09);
  border-radius:6px;
  padding:2px 7px;
  font-family:var(--font-num);
  font-size:15px;
  color:var(--cyan);
}
.article-body pre{
  background:rgba(9,15,30,.9);
  border:1px solid var(--line);
  border-radius:var(--r-img);
  padding:18px 20px;
  overflow-x:auto;
  margin:24px 0;
}
.article-body pre code{background:transparent;padding:0;color:#C9D8F2;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0;}
.article-body a{color:var(--cyan);border-bottom:1px solid rgba(20,217,198,.35);}
.article-body a:hover{border-bottom-color:var(--cyan);}

/* ============ 空态 ============ */
.article-empty{
  text-align:center;
  padding:56px 28px;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-card);
}
.empty-icon{
  width:64px;height:64px;
  margin:0 auto 20px;
  display:flex;align-items:center;justify-content:center;
  border-radius:18px;
  background:rgba(61,108,255,.14);
  border:1px solid rgba(61,108,255,.3);
  color:var(--cyan);
  font-size:24px;
}
.empty-title{font-size:20px;font-weight:700;color:var(--text);margin-bottom:10px;}
.empty-sub{font-size:15px;color:var(--text-2);margin-bottom:26px;}

/* ============ 标签与推荐 ============ */
.article-foot{
  margin-top:44px;
  padding-top:28px;
  border-top:1px solid var(--line);
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;
  align-items:center;
  height:30px;
  padding:0 14px;
  border-radius:999px;
  font-size:13px;
  color:var(--text-2);
  background:var(--glass-soft);
  border:1px solid var(--line);
  transition:border-color .18s ease-out,color .18s ease-out;
}
.tag:hover{border-color:rgba(20,217,198,.5);color:var(--cyan);}

.related{margin-top:48px;}
.related-title{
  font-size:20px;
  font-weight:700;
  color:var(--text);
  margin-bottom:20px;
}
.related-grid{display:grid;grid-template-columns:1fr;gap:14px;}
.related-card{
  display:flex;
  align-items:center;
  gap:16px;
  padding:14px 18px;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  transition:transform .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
}
.related-card:hover{
  transform:translateY(-3px);
  border-color:rgba(20,217,198,.45);
  box-shadow:var(--sh-card);
  color:var(--text);
}
.related-thumb{
  flex:0 0 72px;
  width:72px;height:72px;
  border-radius:12px;
  overflow:hidden;
  background:rgba(255,255,255,.05);
}
.related-thumb img{width:100%;height:100%;object-fit:cover;}
.related-body h3{
  font-size:16px;
  font-weight:600;
  line-height:1.5;
  color:var(--text);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:6px;
}
.related-meta{font-size:13px;color:var(--text-3);}

/* ============ 文末 CTA ============ */
.article-cta{
  margin:0 0 clamp(56px,8vw,88px);
}
.cta-inner{
  display:grid;
  grid-template-columns:1.4fr 1fr;
  align-items:center;
  gap:28px;
  padding:clamp(28px,4vw,44px);
  border-radius:24px;
  border:1px solid rgba(20,217,198,.22);
  background:
    radial-gradient(620px 260px at 0% 0%,rgba(61,108,255,.24),transparent 68%),
    radial-gradient(520px 260px at 100% 100%,rgba(20,217,198,.18),transparent 66%),
    rgba(10,17,32,.86);
}
.cta-inner h2{font-size:clamp(21px,2.6vw,28px);margin-bottom:12px;line-height:1.4;}
.cta-inner p{font-size:15px;color:var(--text-2);max-width:520px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:1040;
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:48px;
  padding:0 20px;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  color:var(--text);
  background:rgba(18,28,52,.74);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(20,217,198,.45);
  box-shadow:0 8px 26px rgba(20,217,198,.18);
  opacity:0;
  visibility:hidden;
  transform:translateY(12px);
  transition:opacity .24s ease-out,transform .24s ease-out,visibility .24s ease-out;
}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{color:var(--text);border-color:var(--cyan);}

/* ============ 页脚 ============ */
.site-footer{
  border-top:1px solid var(--line);
  background:rgba(8,14,28,.75);
  padding:clamp(44px,6vw,72px) 0 24px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr;
  gap:40px;
  padding-bottom:36px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:18px;
  font-weight:700;
  color:var(--text);
  margin-bottom:16px;
}
.footer-desc{
  font-size:14px;
  color:var(--text-2);
  line-height:1.9;
  max-width:440px;
  margin-bottom:20px;
}
.footer-contact{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--text-3);}
.footer-title{
  font-size:14px;
  font-weight:600;
  color:var(--text);
  margin-bottom:18px;
  letter-spacing:.02em;
}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{font-size:14px;color:var(--text-2);}
.footer-links a:hover{color:var(--cyan);}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding-top:22px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}
.to-top{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;height:40px;
  border-radius:50%;
  background:var(--glass-soft);
  border:1px solid var(--line);
  color:var(--text-2);
  transition:border-color .18s ease-out,color .18s ease-out,transform .18s ease-out;
}
.to-top:hover{color:var(--cyan);border-color:rgba(20,217,198,.5);transform:translateY(-2px);}

/* ============ 断点 ============ */
@media (max-width:1199.98px){
  .container{max-width:1080px;}
  .nav-side{gap:20px;}
}
@media (max-width:991.98px){
  .header-inner{grid-template-columns:44px 1fr 44px;height:64px;gap:12px;}
  .nav-side{display:none;}
  .nav-toggle{display:flex;}
  .brand{grid-column:2;grid-row:1;justify-self:center;font-size:16px;}
  .cta-inner{grid-template-columns:1fr;gap:22px;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-grid>div:first-child{grid-column:1 / -1;}
}
@media (max-width:767.98px){
  body{font-size:16px;}
  .article-body{font-size:16.5px;line-height:1.9;}
  .container{padding:0 18px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:575.98px){
  .container{padding:0 16px;}
  .article-head h1{font-size:29px;}
  .article-wrap{padding-top:28px;}
  .float-cta{
    left:0;right:0;bottom:0;
    height:56px;
    border-radius:0;
    justify-content:center;
    border-left:0;border-right:0;border-bottom:0;
    padding-bottom:env(safe-area-inset-bottom);
  }
  .cta-actions .rl-btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:14px;}
  .related-card{flex-direction:column;align-items:flex-start;}
  .related-thumb{width:100%;flex:0 0 auto;height:120px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --bg:#060B18;
  --bg-soft:#0A1120;
  --glass:rgba(18,28,52,.58);
  --glass-strong:rgba(18,28,52,.82);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.18);
  --brand:#3D6CFF;
  --brand-hover:#5C84FF;
  --cyan:#14D9C6;
  --orange:#FF7A45;
  --text:#EDF3FF;
  --muted:#9FB0CC;
  --faint:#6E7E99;
  --radius-card:18px;
  --radius-btn:12px;
  --radius-img:14px;
  --shadow-card:0 12px 32px rgba(0,0,0,.35);
  --shadow-hover:0 20px 48px rgba(0,0,0,.45);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Inter","DIN Alternate","Helvetica Neue",sans-serif;
  --nav-h:72px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;padding:0;background:var(--bg);color:var(--text);
  font-family:var(--font-cn);font-size:17px;line-height:1.85;
  overflow-x:hidden;-webkit-font-smoothing:antialiased;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(620px 420px at 10% 6%,rgba(61,108,255,.16),transparent 70%),
    radial-gradient(560px 380px at 90% 10%,rgba(20,217,198,.13),transparent 72%);
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--cyan);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.25;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}
@media (min-width:1440px){.container{max-width:1320px;}}
.section{position:relative;z-index:1;padding:clamp(64px,9vw,120px) 0;scroll-margin-top:96px;}
.section-soft{background:linear-gradient(180deg,rgba(10,17,32,.0),rgba(10,17,32,.72) 22%,rgba(10,17,32,.72) 78%,rgba(10,17,32,0));}
.sec-head{margin-bottom:clamp(32px,4vw,40px);max-width:760px;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.sec-tag{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;margin-bottom:18px;
  border-radius:999px;border:1px solid var(--line-strong);background:rgba(255,255,255,.04);
  font-size:12px;letter-spacing:.08em;color:var(--cyan);text-transform:uppercase;
}
.sec-tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan);}
.sec-title{font-size:clamp(26px,3.4vw,38px);margin-bottom:14px;}
.sec-lead{color:var(--muted);font-size:16px;max-width:660px;}
.sec-head.center .sec-lead{margin:0 auto;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--radius-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.btn-glow{
  background:linear-gradient(135deg,var(--brand) 0%,var(--cyan) 100%);
  color:#fff;box-shadow:0 8px 24px rgba(61,108,255,.28);
}
.btn-glow:hover{transform:translateY(-2px);color:#fff;box-shadow:0 8px 30px rgba(20,217,198,.35);}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text);}
.btn-ghost:hover{background:rgba(255,255,255,.06);border-color:var(--cyan);color:var(--cyan);}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--cyan);
}
.btn-text i{font-size:12px;transition:transform .18s var(--ease);}
.btn-text:hover i{transform:translateX(3px);}
.btn-sm-nav{height:40px;padding:0 20px;font-size:14px;}

/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:1030;width:100%;
  background:rgba(6,11,24,.55);border-bottom:1px solid transparent;
  transition:background .22s var(--ease),border-color .22s var(--ease),backdrop-filter .22s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(6,11,24,.82);border-bottom-color:var(--line);
  backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);
}
.header-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px;
  height:var(--nav-h);
}
.nav-side{display:flex;align-items:center;gap:28px;}
.nav-side.right{justify-content:flex-end;}
.nav-link{
  position:relative;font-size:15px;color:var(--muted);white-space:nowrap;padding:6px 0;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--cyan);transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--text);}
.nav-link.active::after{transform:scaleX(1);}
.brand{display:flex;align-items:center;gap:10px;justify-self:center;}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:12px;background:rgba(255,255,255,.05);border:1px solid var(--line-strong);}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line-strong);
  background:rgba(255,255,255,.05);color:var(--text);font-size:17px;cursor:pointer;
}
.mobile-nav{border-top:1px solid var(--line);background:var(--glass-strong);backdrop-filter:blur(18px);}
.mobile-nav .m-link{display:block;height:48px;line-height:48px;font-size:15px;color:var(--muted);border-bottom:1px solid var(--line);}
.mobile-nav .m-link.active{color:var(--cyan);}

/* 页面横幅 */
.page-banner{position:relative;z-index:1;overflow:hidden;padding:clamp(56px,8vw,88px) 0 clamp(44px,6vw,64px);min-height:260px;}
.banner-bg{position:absolute;inset:0;background-size:cover;background-position:center top;opacity:.34;}
.banner-veil{
  position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(6,11,24,.55) 0%,rgba(6,11,24,.86) 58%,var(--bg) 100%),
    radial-gradient(700px 420px at 80% 10%,rgba(61,108,255,.22),transparent 70%);
}
.banner-inner{position:relative;z-index:2;}
.breadcrumb-nav{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--faint);margin-bottom:20px;}
.breadcrumb-nav a{color:var(--muted);}
.breadcrumb-nav a:hover{color:var(--cyan);}
.breadcrumb-nav i{font-size:10px;color:var(--faint);}
.pill{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;
  background:rgba(255,255,255,.05);border:1px solid var(--line-strong);font-size:12px;color:var(--cyan);
  letter-spacing:.04em;
}
.pill .dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan);}
.page-banner h1{font-size:clamp(30px,5vw,52px);margin:18px 0 16px;max-width:900px;}
.banner-sub{color:var(--muted);font-size:16px;max-width:620px;}

/* 锚点条 */
.anchor-bar{
  position:sticky;top:var(--nav-h);z-index:1020;
  background:rgba(6,11,24,.78);border-bottom:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
}
.anchor-scroll{display:flex;gap:12px;overflow-x:auto;padding:14px 24px;scrollbar-width:none;}
.anchor-scroll::-webkit-scrollbar{display:none;}
.anchor-pill{
  flex:0 0 auto;height:36px;padding:0 18px;border-radius:999px;font-size:14px;color:var(--muted);
  background:rgba(255,255,255,.04);border:1px solid transparent;display:inline-flex;align-items:center;
  transition:all .18s var(--ease);
}
.anchor-pill:hover{color:var(--text);border-color:var(--line-strong);}
.anchor-pill.active{color:var(--cyan);border-color:var(--cyan);background:rgba(20,217,198,.12);}

/* 核验要点 */
.verify-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(28px,4vw,56px);align-items:start;}
.num-list{display:flex;flex-direction:column;gap:8px;}
.num-list li{
  display:grid;grid-template-columns:88px 1fr;gap:18px;padding:22px 0;border-bottom:1px solid var(--line);
  position:relative;transition:background .18s var(--ease);
}
.num-list li::before{
  content:"";position:absolute;left:-16px;top:26px;bottom:26px;width:3px;border-radius:3px;background:var(--cyan);
  opacity:0;transition:opacity .18s var(--ease);
}
.num-list li:hover::before{opacity:1;}
.num-list .num{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:44px;line-height:1;
  font-weight:700;color:rgba(159,176,204,.28);transition:color .18s var(--ease);
}
.num-list li:hover .num{color:rgba(20,217,198,.55);}
.num-list h3{font-size:19px;margin-bottom:8px;}
.num-list p{color:var(--muted);font-size:15.5px;line-height:1.85;}
.glass-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-card);
  backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);
  transition:box-shadow .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease);
}
.verify-card{position:sticky;top:148px;}
.img-wrap{position:relative;overflow:hidden;border-radius:var(--radius-img);border:1px solid var(--line);}
.img-wrap img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease);}
.img-wrap:hover img{transform:scale(1.04);}
.ratio-16-10{aspect-ratio:16/10;}
.ratio-16-9{aspect-ratio:16/9;}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:rgba(255,255,255,.06);border:1px solid var(--line-strong);
  font-size:11.5px;color:var(--cyan);letter-spacing:.04em;margin:18px 0 12px;
}
.tag.orange{color:var(--orange);}
.verify-card h3{font-size:20px;margin-bottom:14px;}
.dot-list{display:flex;flex-direction:column;gap:12px;}
.dot-list li{position:relative;padding-left:20px;font-size:15px;color:var(--muted);line-height:1.8;}
.dot-list li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;
  background:var(--cyan);box-shadow:0 0 8px rgba(20,217,198,.6);
}

/* 流程 */
.flow-line{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:12px;}
.flow-line::before{
  content:"";position:absolute;top:26px;left:6%;right:6%;height:1px;
  background:linear-gradient(90deg,rgba(61,108,255,.1),rgba(20,217,198,.55),rgba(61,108,255,.1));
}
.flow-step{position:relative;padding-top:64px;}
.flow-step .step-dot{
  position:absolute;top:8px;left:0;width:38px;height:38px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;background:var(--bg-soft);
  border:1px solid rgba(20,217,198,.5);color:var(--cyan);font-family:var(--font-num);font-size:14px;font-weight:700;
  box-shadow:0 0 20px rgba(20,217,198,.18);
}
.flow-step h3{font-size:18px;margin-bottom:10px;}
.flow-step p{color:var(--muted);font-size:15px;line-height:1.8;}

/* 场景卡片 */
.scene-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;}
.scene-card{
  display:block;background:var(--glass);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);
}
.scene-card:nth-child(2){margin-top:52px;}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(20,217,198,.42);}
.scene-body{padding:24px 26px 26px;}
.scene-body h3{font-size:19px;margin-bottom:10px;}
.scene-body p{color:var(--muted);font-size:15px;line-height:1.85;}
.scene-meta{display:flex;align-items:center;justify-content:space-between;margin-top:18px;}
.scene-meta span{font-size:13px;color:var(--faint);}
.scene-meta i{color:var(--cyan);font-size:12px;transition:transform .18s var(--ease);}
.scene-card:hover .scene-meta i{transform:translateX(4px);}

/* 证据 */
.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.stat-item{padding:32px 24px;border-right:1px solid var(--line);}
.stat-item:last-child{border-right:0;}
.stat-num{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;font-weight:700;
  font-size:clamp(32px,4.2vw,50px);line-height:1.1;color:var(--text);
}
.stat-num em{font-style:normal;color:var(--orange);}
.stat-label{font-size:14px;color:var(--muted);margin-top:8px;}
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:48px;}
.quote-card{
  background:var(--glass);border:1px solid var(--line);border-left:3px solid var(--cyan);
  border-radius:14px;padding:24px;
  backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);
}
.quote-card p{font-size:15.5px;color:var(--text);line-height:1.85;}
.quote-card span{display:block;margin-top:16px;font-size:13px;color:var(--faint);}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px;}
.faq-item{
  background:var(--glass);border:1px solid var(--line);border-radius:14px;overflow:hidden;
  backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item:hover{border-color:var(--line-strong);}
.faq-item.open{border-color:rgba(20,217,198,.4);box-shadow:0 12px 32px rgba(0,0,0,.32);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 24px;background:transparent;border:0;color:var(--text);
  font-size:17px;font-weight:500;text-align:left;cursor:pointer;line-height:1.6;
}
.faq-icon{position:relative;flex:0 0 auto;width:20px;height:20px;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--cyan);border-radius:2px;transition:transform .24s var(--ease);
}
.faq-icon::before{left:0;top:9px;width:20px;height:1.6px;}
.faq-icon::after{left:9px;top:0;width:1.6px;height:20px;}
.faq-item.open .faq-icon::after{transform:rotate(90deg);}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .28s var(--ease);}
.faq-item.open .faq-a{grid-template-rows:1fr;}
.faq-a-inner{overflow:hidden;}
.faq-a-inner p{
  padding:0 24px 24px;font-size:15px;line-height:1.9;color:var(--muted);
  border-top:1px solid transparent;
}
.faq-item.open .faq-a-inner p{border-image:linear-gradient(90deg,rgba(20,217,198,.5),rgba(255,255,255,0)) 1;border-top-width:1px;}

/* CTA */
.cta-band{position:relative;z-index:1;padding:clamp(64px,9vw,110px) 0;scroll-margin-top:96px;}
.cta-box{
  position:relative;overflow:hidden;border-radius:24px;border:1px solid rgba(20,217,198,.24);
  background:linear-gradient(135deg,rgba(13,24,48,.94) 0%,rgba(10,30,44,.9) 100%);
  padding:clamp(30px,5vw,56px);display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center;
  box-shadow:0 20px 48px rgba(0,0,0,.42);
}
.cta-box::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(20,217,198,.18),transparent 68%);
}
.cta-box h2{font-size:clamp(24px,3vw,34px);margin-bottom:14px;}
.cta-box p{color:var(--muted);font-size:16px;max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px;}
.info-card{
  position:relative;z-index:2;background:var(--glass);border:1px solid var(--line-strong);
  border-radius:var(--radius-card);padding:26px;
}
.info-card h3{font-size:17px;margin-bottom:16px;}
.info-row{display:flex;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px solid var(--line);font-size:14.5px;}
.info-row:last-of-type{border-bottom:0;}
.info-row span:first-child{color:var(--faint);}
.info-row span:last-child{color:var(--text);}
.info-card .btn{width:100%;margin-top:18px;}

/* 页脚 */
.site-footer{position:relative;z-index:1;border-top:1px solid var(--line);background:rgba(8,14,28,.86);padding:clamp(48px,7vw,76px) 0 24px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;margin-bottom:16px;}
.footer-desc{color:var(--muted);font-size:14.5px;line-height:1.85;max-width:420px;}
.footer-contact{display:flex;flex-direction:column;gap:8px;margin-top:18px;font-size:13.5px;color:var(--faint);}
.footer-title{font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{font-size:14.5px;color:var(--muted);}
.footer-links a:hover{color:var(--cyan);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);font-size:13px;color:var(--faint);
}
.to-top{
  display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;
  background:rgba(255,255,255,.05);border:1px solid var(--line-strong);color:var(--text);
}
.to-top:hover{border-color:var(--cyan);color:var(--cyan);}

/* 浮动 CTA */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:1040;
  display:inline-flex;align-items:center;gap:8px;height:48px;padding:0 22px;border-radius:999px;
  background:rgba(18,28,52,.86);border:1px solid rgba(20,217,198,.5);color:var(--text);
  font-size:14px;font-weight:600;box-shadow:0 10px 30px rgba(0,0,0,.4),0 0 0 4px rgba(20,217,198,.06);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s var(--ease);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta i{color:var(--cyan);}

/* 响应式 */
@media (max-width:1199.98px){
  .verify-card{position:static;}
}
@media (max-width:991.98px){
  .header-inner{display:flex;justify-content:space-between;height:64px;}
  .nav-side{display:none;}
  .brand{justify-self:flex-start;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  :root{--nav-h:64px;}
  .verify-grid{grid-template-columns:1fr;}
  .flow-line{grid-template-columns:repeat(2,1fr);row-gap:36px;}
  .flow-line::before{display:none;}
  .quote-grid{grid-template-columns:1fr;}
  .stats-row{grid-template-columns:repeat(2,1fr);}
  .stat-item:nth-child(2){border-right:0;}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line);}
  .cta-box{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767.98px){
  body{font-size:16px;}
  .scene-grid{grid-template-columns:1fr;}
  .scene-card:nth-child(2){margin-top:0;}
  .num-list li{grid-template-columns:66px 1fr;gap:14px;}
  .num-list .num{font-size:36px;}
  .flow-line{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-actions .btn{width:100%;}
}
@media (max-width:575.98px){
  .container{padding:0 18px;}
  .anchor-scroll{padding:12px 18px;}
  .page-banner h1{font-size:30px;}
  .stat-item{padding:24px 18px;}
  .float-cta{left:0;right:0;bottom:0;height:56px;border-radius:0;justify-content:center;padding:0 18px 6px;}
  .footer-bottom{font-size:12.5px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
  --bg:#060B18;
  --bg-2:#0A1120;
  --glass:rgba(18,28,52,.58);
  --glass-soft:rgba(18,28,52,.4);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.18);
  --primary:#3D6CFF;
  --primary-h:#5C84FF;
  --cyan:#14D9C6;
  --orange:#FF7A45;
  --text:#EDF3FF;
  --muted:#9FB0CC;
  --dim:#6E7E99;
  --radius:18px;
  --radius-sm:12px;
  --radius-xs:10px;
  --shadow:0 12px 32px rgba(0,0,0,.35);
  --shadow-h:0 20px 48px rgba(0,0,0,.45);
  --glow:0 8px 30px rgba(20,217,198,.35);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Inter","DIN Alternate",system-ui,sans-serif;
  --header-h:76px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  padding-top:var(--header-h);
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.85;
  color:var(--text);
  background-color:var(--bg);
  background-image:
    radial-gradient(760px 520px at 12% -6%,rgba(61,108,255,.16),transparent 62%),
    radial-gradient(680px 460px at 92% 6%,rgba(20,217,198,.12),transparent 64%),
    radial-gradient(900px 600px at 50% 108%,rgba(61,108,255,.10),transparent 70%);
  background-attachment:fixed;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--text);text-decoration:none;transition:color .18s ease-out,border-color .18s ease-out,background-color .18s ease-out}
a:hover{color:var(--cyan)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.28}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px}
.container{max-width:1240px !important;padding-left:24px;padding-right:24px;margin:0 auto}
@media (min-width:1440px){.container{max-width:1320px !important}}

/* ---------- 通用组件 ---------- */
.sec{padding:clamp(56px,7vw,96px) 0;position:relative}
.sec-head{max-width:720px;margin-bottom:36px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.tagline{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;color:var(--cyan);
  background:rgba(20,217,198,.08);
  border:1px solid rgba(20,217,198,.24);
  border-radius:999px;padding:6px 14px;margin-bottom:16px;
}
.tagline::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px rgba(20,217,198,.9)}
.sec-title{font-size:clamp(26px,3.4vw,38px);margin-bottom:14px}
.sec-sub{color:var(--muted);font-size:16px;max-width:640px}
.sec-head.center .sec-sub{margin-left:auto;margin-right:auto}

.btn-main,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out,border-color .18s ease-out,color .18s ease-out;
  white-space:nowrap;
}
.btn-main{background:linear-gradient(135deg,var(--primary) 0%,var(--cyan) 130%);color:#04101F}
.btn-main:hover{color:#04101F;transform:translateY(-2px);box-shadow:var(--glow)}
.btn-main:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{background:rgba(255,255,255,.06);border-color:rgba(20,217,198,.6);color:var(--text)}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px}
.link-more{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--cyan)}
.link-more i{font-size:12px;transition:transform .18s ease-out}
.link-more:hover i{transform:translateX(3px)}
.chip{
  display:inline-flex;align-items:center;
  font-size:12px;padding:5px 12px;border-radius:999px;
  background:rgba(18,28,52,.6);border:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(140%);color:var(--muted);
}
.chip.cyan{color:var(--cyan);border-color:rgba(20,217,198,.28)}
.chip.orange{color:var(--orange);border-color:rgba(255,122,69,.3)}

/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1040;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background-color .22s ease-out,border-color .22s ease-out,backdrop-filter .22s ease-out;
}
.site-header.scrolled{
  background:rgba(8,14,28,.72);
  backdrop-filter:blur(18px) saturate(150%);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  gap:24px;min-height:var(--header-h);
}
.nav-side{display:flex;align-items:center;gap:28px}
.nav-side.left{justify-content:flex-start}
.nav-side.right{justify-content:flex-end;gap:22px}
.nav-link{
  position:relative;font-size:15px;color:var(--muted);padding:6px 0;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--cyan);transform:scaleX(0);transform-origin:left;transition:transform .2s ease-out;
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--text)}
.nav-link.active::after{transform:scaleX(1)}
.brand{display:flex;align-items:center;gap:10px;justify-self:center}
.brand-mark{
  width:40px;height:38px;display:grid;place-items:center;border-radius:12px;
  background:linear-gradient(140deg,rgba(61,108,255,.28),rgba(20,217,198,.18));
  border:1px solid var(--line-strong);
}
.brand-text{font-size:18px;font-weight:700;letter-spacing:.01em;white-space:nowrap}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:rgba(18,28,52,.6);border:1px solid var(--line);
  color:var(--text);font-size:16px;
}
.mobile-drawer{
  display:none;
  background:rgba(7,12,26,.96);
  backdrop-filter:blur(18px) saturate(150%);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:12px 24px 20px;
}
.mobile-drawer.open{display:block}
.mobile-drawer a{
  display:flex;align-items:center;min-height:48px;font-size:15px;color:var(--muted);
  border-bottom:1px solid var(--line);
}
.mobile-drawer a:last-of-type{border-bottom:0}
.mobile-drawer a.active{color:var(--cyan)}

/* ---------- 页面横幅 ---------- */
.page-banner{
  position:relative;overflow:hidden;
  min-height:clamp(220px,26vw,262px);
  display:flex;align-items:center;
  border-bottom:1px solid var(--line);
}
.page-banner .banner-bg{
  position:absolute;inset:-6px;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center 28%;
  filter:blur(2px);
  transform:scale(1.04);
}
.page-banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,11,24,.82) 0%,rgba(6,11,24,.9) 52%,rgba(6,11,24,1) 100%);
}
.banner-inner{position:relative;z-index:2;text-align:center;padding:42px 0 46px}
.crumb{font-size:13px;color:var(--dim);margin-bottom:14px}
.crumb a{color:var(--dim)}
.crumb a:hover{color:var(--cyan)}
.crumb span.sep{margin:0 8px;color:rgba(255,255,255,.2)}
.banner-inner h1{
  font-size:clamp(28px,3.8vw,44px);
  margin:14px 0 12px;
  scroll-margin-top:96px;
}
.banner-sub{color:var(--muted);font-size:16px;max-width:660px;margin:0 auto}
.banner-tags{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:22px}

/* ---------- 数据条 ---------- */
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.metric{padding:30px 24px;position:relative}
.metric + .metric::before{
  content:"";position:absolute;left:0;top:22%;bottom:22%;width:1px;background:var(--line);
}
.metric-num{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:clamp(32px,4vw,46px);font-weight:700;line-height:1.1;
  background:linear-gradient(120deg,#EDF3FF 10%,#8FB3FF 90%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.metric-num em{font-style:normal;font-size:15px;color:var(--muted);margin-left:6px;-webkit-text-fill-color:var(--muted)}
.metric-label{font-size:14px;color:var(--muted);margin-top:8px}

/* ---------- 处理节点时间轴 ---------- */
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.tl-item{
  position:relative;padding:26px 22px 24px;
  background:var(--glass);border:1px solid var(--line);
  border-radius:var(--radius);backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow);
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.tl-item::before{
  content:"";position:absolute;left:22px;top:-5px;width:10px;height:10px;border-radius:50%;
  background:var(--cyan);box-shadow:0 0 14px rgba(20,217,198,.85);
}
.tl-item:hover{transform:translateY(-4px);border-color:rgba(20,217,198,.4);box-shadow:var(--shadow-h)}
.tl-num{
  font-family:var(--font-num);font-size:38px;font-weight:700;line-height:1;
  color:rgba(61,108,255,.42);margin-bottom:14px;
}
.tl-item h3{font-size:18px;margin-bottom:8px}
.tl-item p{font-size:15px;color:var(--muted)}

/* ---------- 问答主体 ---------- */
.support-grid{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:32px;align-items:start}
.faq-group{margin-bottom:34px}
.faq-group:last-child{margin-bottom:0}
.group-head{
  display:flex;align-items:center;gap:12px;margin-bottom:16px;
}
.group-head .bar{width:4px;height:20px;border-radius:2px;background:linear-gradient(180deg,var(--primary),var(--cyan))}
.group-head h3{font-size:19px}
.group-head .count{font-size:13px;color:var(--dim);margin-left:auto}
.acc-item{
  background:var(--glass);border:1px solid var(--line);border-radius:14px;
  backdrop-filter:blur(18px) saturate(140%);
  margin-bottom:12px;overflow:hidden;
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.acc-item:hover{border-color:var(--line-strong)}
.acc-item:has(.collapse.show){border-color:rgba(20,217,198,.34);box-shadow:0 0 0 1px rgba(20,217,198,.1),0 18px 42px rgba(0,0,0,.4)}
.acc-btn{
  position:relative;width:100%;text-align:left;background:transparent;border:0;
  color:var(--text);font-size:17px;font-weight:500;line-height:1.6;
  padding:19px 60px 19px 22px;border-radius:14px;
}
.acc-btn:hover{color:#fff}
.acc-btn::before,.acc-btn::after{
  content:"";position:absolute;right:22px;top:50%;width:15px;height:2px;border-radius:2px;
  background:var(--muted);margin-top:-1px;
  transition:transform .22s ease-out,background-color .22s ease-out;
}
.acc-btn::before{transform:rotate(0deg)}
.acc-btn::after{transform:rotate(90deg)}
.acc-btn:not(.collapsed)::before{transform:rotate(45deg);background:var(--cyan)}
.acc-btn:not(.collapsed)::after{transform:rotate(135deg);background:var(--cyan)}
.acc-body{padding:0 22px 22px;font-size:15.5px;color:var(--muted);line-height:1.9}
.acc-divider{height:1px;margin:0 0 16px;background:linear-gradient(90deg,rgba(20,217,198,.55),rgba(61,108,255,.18),transparent)}
.acc-body strong{color:var(--text);font-weight:600}
.acc-body ul{margin-top:10px}
.acc-body li{position:relative;padding-left:18px;margin-bottom:8px}
.acc-body li::before{content:"";position:absolute;left:0;top:12px;width:6px;height:6px;border-radius:50%;background:var(--cyan)}

/* ---------- 侧边信息卡 ---------- */
.side-card{
  position:sticky;top:calc(var(--header-h) + 20px);
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);
  backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow);overflow:hidden;
}
.side-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden}
.side-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.side-card:hover .thumb img{transform:scale(1.04)}
.side-card .thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,11,24,.1),rgba(10,17,32,.85))}
.side-body{padding:22px 24px 24px}
.side-body h3{font-size:19px;margin-bottom:8px}
.side-body .lead{font-size:14.5px;color:var(--muted);margin-bottom:18px}
.side-list li{display:flex;gap:12px;padding:12px 0;border-top:1px solid var(--line);font-size:14.5px;color:var(--muted)}
.side-list li:first-child{border-top:0;padding-top:0}
.side-list i{color:var(--cyan);font-size:13px;margin-top:6px}
.side-list b{display:block;color:var(--text);font-weight:600;font-size:15px;margin-bottom:2px}
.side-actions{display:flex;flex-direction:column;gap:10px;margin-top:20px}
.side-note{
  margin-top:16px;font-size:13px;color:var(--dim);
  padding:12px 14px;border-radius:var(--radius-xs);
  background:rgba(255,255,255,.03);border:1px solid var(--line);
}

/* ---------- 快捷入口 ---------- */
.quick-row{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.quick-item{padding-top:24px;border-top:1px solid var(--line);position:relative}
.quick-item::before{content:"";position:absolute;left:0;top:-1px;width:56px;height:1px;background:var(--cyan)}
.quick-num{font-family:var(--font-num);font-size:34px;font-weight:700;color:rgba(20,217,198,.5);line-height:1;margin-bottom:12px}
.quick-item h3{font-size:18px;margin-bottom:8px}
.quick-item p{font-size:15px;color:var(--muted);margin-bottom:14px}

/* ---------- 联系 / CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:24px;
  border:1px solid var(--line-strong);
  background:
    radial-gradient(620px 320px at 10% 10%,rgba(61,108,255,.3),transparent 66%),
    radial-gradient(560px 320px at 96% 96%,rgba(20,217,198,.22),transparent 68%),
    rgba(10,17,32,.86);
  backdrop-filter:blur(18px) saturate(140%);
  padding:clamp(30px,4vw,48px);
  scroll-margin-top:96px;
}
.cta-band .glow-img{
  position:absolute;right:-40px;bottom:-60px;width:380px;opacity:.14;pointer-events:none;
  filter:blur(1px);
}
.cta-inner{position:relative;display:grid;grid-template-columns:1.4fr 1fr;gap:32px;align-items:center;z-index:2}
.cta-inner h2{font-size:clamp(23px,2.6vw,30px);margin-bottom:12px}
.cta-inner p{color:var(--muted);font-size:15.5px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}
.cta-meta{display:flex;flex-wrap:wrap;gap:16px;margin-top:18px;font-size:13.5px;color:var(--dim)}
.cta-meta span{display:inline-flex;align-items:center;gap:7px}
.cta-meta i{color:var(--cyan);font-size:12px}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:clamp(56px,7vw,96px);
  background:linear-gradient(180deg,rgba(10,17,32,.6),rgba(6,11,24,.95));
  border-top:1px solid var(--line);
  position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(20,217,198,.5),rgba(61,108,255,.4),transparent);
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:36px;
  padding:clamp(44px,6vw,72px) 0 36px;
}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;margin-bottom:14px}
.footer-desc{color:var(--muted);font-size:14.5px;max-width:440px}
.footer-contact{margin-top:16px;display:flex;flex-direction:column;gap:6px;font-size:13.5px;color:var(--dim)}
.footer-title{font-size:15px;font-weight:600;margin-bottom:14px}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14.5px;color:var(--muted)}
.footer-links a:hover{color:var(--cyan)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 0 26px;border-top:1px solid var(--line);
  font-size:13px;color:var(--dim);
}
.to-top{
  width:40px;height:40px;border-radius:50%;display:grid;place-items:center;
  background:rgba(255,255,255,.05);border:1px solid var(--line-strong);color:var(--text);
  transition:background-color .2s ease-out,transform .2s ease-out,border-color .2s ease-out;
}
.to-top:hover{background:rgba(20,217,198,.14);border-color:rgba(20,217,198,.5);transform:translateY(-2px);color:var(--text)}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:1030;
  display:inline-flex;align-items:center;gap:9px;height:48px;padding:0 22px;
  border-radius:999px;font-size:15px;font-weight:600;
  background:rgba(12,20,40,.78);border:1px solid rgba(20,217,198,.45);
  color:var(--text);backdrop-filter:blur(18px) saturate(150%);
  box-shadow:0 10px 30px rgba(0,0,0,.45),0 0 0 1px rgba(20,217,198,.08);
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .24s ease-out,transform .24s ease-out,box-shadow .2s ease-out;
}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto}
.float-cta:hover{box-shadow:var(--glow);color:var(--text)}
.float-cta i{color:var(--cyan)}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .support-grid{grid-template-columns:1fr}
  .side-card{position:static}
}
@media (max-width:991px){
  :root{--header-h:64px}
  .nav-side{display:none}
  .header-inner{grid-template-columns:auto 1fr auto;gap:12px}
  .brand{justify-self:start}
  .nav-toggle{display:grid;place-items:center;justify-self:end}
  .timeline{grid-template-columns:repeat(2,1fr)}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .metric + .metric::before{display:none}
  .metric{border-top:1px solid var(--line)}
  .metric:nth-child(1),.metric:nth-child(2){border-top:0}
  .quick-row{grid-template-columns:1fr;gap:22px}
  .cta-inner{grid-template-columns:1fr}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  body{font-size:16px}
  .sec{padding:56px 0}
  .banner-inner{padding:34px 0 38px}
  .banner-sub{font-size:15px}
  .acc-btn{font-size:16px;padding:17px 54px 17px 18px}
  .acc-body{padding:0 18px 20px;font-size:15px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
}
@media (max-width:575px){
  .container{padding-left:18px;padding-right:18px}
  .timeline{grid-template-columns:1fr}
  .metrics{grid-template-columns:1fr 1fr}
  .metric{padding:22px 16px}
  .metric-num{font-size:30px}
  .cta-band{border-radius:18px;padding:26px 20px}
  .float-cta{
    right:0;left:0;bottom:0;height:56px;border-radius:0;
    justify-content:center;
    border-left:0;border-right:0;border-bottom:0;
    padding-bottom:env(safe-area-inset-bottom);
  }
  .footer-bottom{flex-direction:column;align-items:flex-start;padding-bottom:78px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none !important;animation:none !important}
}