:root{
  --blue:#2563eb;
  --blue-2:#0ea5e9;
  --ink:#0f172a;
  --slate:#475569;
  --muted:#94a3b8;
  --bg:#ffffff;
  --bg-alt:#f6f9ff;
  --line:#e6ecf5;
  --radius:16px;
  --shadow:0 10px 30px rgba(37,99,235,.08);
  --shadow-lg:0 20px 50px rgba(37,99,235,.16);
  --maxw:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,system-ui,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
img{max-width:100%}

/* ===== 按钮 ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:999px;font-weight:600;font-size:15px;
  border:1.5px solid transparent;cursor:pointer;transition:.25s;white-space:nowrap}
.btn--primary{background:linear-gradient(135deg,var(--blue),var(--blue-2));color:#fff;
  box-shadow:0 8px 20px rgba(37,99,235,.35)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(37,99,235,.45)}
.btn--ghost{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.5)}
.btn--ghost:hover{background:rgba(255,255,255,.24)}
.btn--light{background:#fff;color:var(--blue)}
.btn--light:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(0,0,0,.18)}
.btn--lg{padding:14px 30px;font-size:16px}

/* ===== 导航 ===== */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;transition:.3s;
  background:rgba(255,255,255,0);}
.nav.scrolled{background:rgba(255,255,255,.92);backdrop-filter:blur(12px);
  box-shadow:0 4px 20px rgba(15,23,42,.06)}
.nav__inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:#fff;transition:.3s}
.nav.scrolled .brand{color:var(--ink)}
.brand__logo{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--blue),var(--blue-2));color:#fff;font-size:18px}
.nav__menu{display:flex;gap:30px}
.nav__menu a{color:rgba(255,255,255,.9);font-weight:500;font-size:15px;transition:.2s;position:relative}
.nav.scrolled .nav__menu a{color:var(--slate)}
.nav__menu a:hover{color:#fff}
.nav.scrolled .nav__menu a:hover{color:var(--blue)}
.nav__actions{display:flex;gap:12px;align-items:center}
.nav.scrolled .btn--ghost{background:rgba(37,99,235,.08);color:var(--blue);border-color:transparent}
.nav.scrolled .btn--ghost:hover{background:rgba(37,99,235,.16)}
.nav__toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer}
.nav__toggle span{width:24px;height:2px;background:#fff;border-radius:2px;transition:.3s}
.nav.scrolled .nav__toggle span{background:var(--ink)}

/* ===== Hero ===== */
.hero{position:relative;padding:150px 0 90px;color:#fff;overflow:hidden}
.hero__bg{position:absolute;inset:0;z-index:-1;
  background:linear-gradient(135deg,#1e3a8a 0%,#2563eb 45%,#0ea5e9 100%)}
.hero__bg::after{content:"";position:absolute;inset:0;
  background:radial-gradient(900px 500px at 80% -10%,rgba(255,255,255,.25),transparent 60%),
            radial-gradient(700px 400px at 10% 110%,rgba(14,165,233,.5),transparent 60%)}
.hero__inner{display:grid;grid-template-columns:1.1fr .9fr;gap:50px;align-items:center}
.hero__badge{display:inline-block;padding:6px 16px;border-radius:999px;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.3);
  font-size:13px;font-weight:600;margin-bottom:22px}
.hero__title{font-size:46px;line-height:1.2;font-weight:800;letter-spacing:-.5px}
.hero__subtitle{font-size:17px;margin:22px 0 32px;color:rgba(255,255,255,.92);max-width:520px}
.hero__subtitle strong{color:#fff}
.hero__cta{display:flex;gap:16px;flex-wrap:wrap}
.hero__stats{display:flex;gap:40px;margin-top:50px}
.stat b{display:block;font-size:34px;font-weight:800}
.stat span{font-size:14px;color:rgba(255,255,255,.85)}

/* Hero 模拟器 */
.hero__media{display:flex;justify-content:center}
.mockup{width:320px;background:#fff;border-radius:22px;box-shadow:var(--shadow-lg);overflow:hidden;
  transform:perspective(1000px) rotateY(-12deg) rotateX(4deg);transition:.4s}
.mockup:hover{transform:perspective(1000px) rotateY(0) rotateX(0)}
.mockup__bar{display:flex;gap:7px;padding:14px 16px;background:#f1f5f9}
.mockup__bar i{width:11px;height:11px;border-radius:50%;background:#cbd5e1}
.mockup__bar i:nth-child(1){background:#ff6058}.mockup__bar i:nth-child(2){background:#ffbd2e}.mockup__bar i:nth-child(3){background:#28c840}
.mockup__body{padding:24px}
.mockup__row{display:flex;align-items:center;gap:12px;padding:14px;border:1px solid var(--line);
  border-radius:12px;margin-bottom:12px;color:var(--ink);font-weight:600}
.dot{width:12px;height:12px;border-radius:50%}
.dot--blue{background:var(--blue)}.dot--green{background:#10b981}.dot--orange{background:#f59e0b}
.mockup__qr{margin-top:8px;height:120px;border-radius:12px;display:grid;place-items:center;
  background:repeating-conic-gradient(#0f172a 0 25%,#fff 0 50%) 50%/22px 22px;
  color:#fff;font-weight:800;font-size:18px;text-shadow:0 1px 4px rgba(0,0,0,.4);
  position:relative}
.mockup__qr::after{content:"";position:absolute;inset:0;background:rgba(15,23,42,.35);border-radius:12px}
.mockup__qr{position:relative}
.mockup__qr span{}
.mockup__qr{color:#fff}

/* ===== 通用 section ===== */
.section{padding:90px 0}
.section--alt{background:var(--bg-alt)}
.section__head{text-align:center;max-width:720px;margin:0 auto 56px}
.section__tag{display:inline-block;color:var(--blue);font-weight:700;font-size:14px;
  letter-spacing:1px;margin-bottom:14px}
.section__title{font-size:34px;font-weight:800;letter-spacing:-.5px}
.section__desc{color:var(--slate);font-size:17px;margin-top:14px}

/* ===== 卡片 ===== */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px 26px;
  transition:.3s}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.card__icon{width:58px;height:58px;border-radius:14px;display:grid;place-items:center;font-size:28px;
  background:color-mix(in srgb,var(--c) 14%,#fff);margin-bottom:18px}
.card h3{font-size:19px;margin-bottom:10px}
.card p{color:var(--slate);font-size:15px}

/* ===== 多端入口 ===== */
.entries{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.entry{background:#fff;border-radius:var(--radius);padding:30px 24px;border:1px solid var(--line);
  position:relative;overflow:hidden;transition:.3s}
.entry:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.entry__num{font-size:40px;font-weight:800;color:var(--line);position:absolute;top:14px;right:20px}
.entry h4{font-size:18px;margin-bottom:8px;position:relative}
.entry p{color:var(--slate);font-size:14px;position:relative}

/* ===== 方案 ===== */
.solutions{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.solution{border-radius:var(--radius);overflow:hidden;background:#fff;border:1px solid var(--line);
  transition:.3s}
.solution:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.solution__img{height:160px;background:var(--g);display:grid;place-items:center;color:#fff;
  font-size:26px;font-weight:800;letter-spacing:2px}
.solution__body{padding:26px 24px}
.solution__body h3{font-size:19px;margin-bottom:10px}
.solution__body p{color:var(--slate);font-size:15px;margin-bottom:14px}
.link{color:var(--blue);font-weight:600}

/* ===== 服务支持 / 下载中心 ===== */
.support-group{margin-bottom:42px}
.support-group__title{font-size:20px;font-weight:800;margin-bottom:18px;
  padding-left:14px;border-left:4px solid var(--blue)}
.downloads{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.dl{display:flex;align-items:center;gap:16px;background:#fff;border:1px solid var(--line);
  border-radius:14px;padding:20px 22px;transition:.25s}
.dl:hover{box-shadow:var(--shadow);transform:translateY(-3px);border-color:transparent}
.dl__icon{width:50px;height:50px;border-radius:12px;background:var(--bg-alt);
  display:grid;place-items:center;font-size:26px;flex-shrink:0}
.dl__info{flex:1;min-width:0}
.dl__info h4{font-size:16px;margin-bottom:4px}
.dl__info p{font-size:13px;color:var(--muted)}
.btn--ghost-dark{background:rgba(37,99,235,.08);color:var(--blue);border-color:transparent}
.btn--ghost-dark:hover{background:rgba(37,99,235,.16)}
.support-note{text-align:center;color:var(--slate);font-size:15px;margin-top:8px}
@media (max-width:640px){.downloads{grid-template-columns:1fr}}

/* ===== 案例 ===== */
.cases{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.case{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;
  transition:.3s}
.case:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.case blockquote{font-size:16px;color:var(--ink);line-height:1.7;position:relative;padding-left:18px}
.case blockquote::before{content:"“";position:absolute;left:-4px;top:-10px;font-size:42px;color:var(--blue);opacity:.3}
.case figcaption{margin-top:18px;display:flex;flex-direction:column;gap:2px}
.case figcaption b{font-size:15px}
.case figcaption span{font-size:13px;color:var(--muted)}

/* ===== 合作伙伴 ===== */
.partners{display:grid;grid-template-columns:repeat(6,1fr);gap:18px}
.partner{background:#fff;border:1px solid var(--line);border-radius:12px;height:84px;
  display:grid;place-items:center;font-weight:700;color:var(--slate);transition:.3s}
.partner:hover{color:var(--blue);border-color:var(--blue);transform:translateY(-3px)}

/* ===== CTA ===== */
.cta{padding:90px 0;background:linear-gradient(135deg,#1e3a8a,#2563eb)}
.cta__inner{text-align:center;color:#fff}
.cta h2{font-size:34px;font-weight:800}
.cta p{margin:14px 0 30px;font-size:17px;color:rgba(255,255,255,.9)}
.cta__form{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.cta__form input{padding:14px 20px;border-radius:999px;border:0;width:220px;font-size:15px;outline:none}

/* ===== 页脚 ===== */
.footer{background:#0f172a;color:#cbd5e1;padding:60px 0 0}
.footer__inner{display:grid;grid-template-columns:1.3fr 2fr;gap:40px;padding-bottom:40px}
.footer__brand .brand{color:#fff;margin-bottom:14px}
.footer__brand p{color:#94a3b8;font-size:14px}
.footer__cols{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.footer__cols h5{color:#fff;margin-bottom:14px;font-size:15px}
.footer__cols a{display:block;color:#94a3b8;font-size:14px;margin-bottom:9px;transition:.2s}
.footer__cols a:hover{color:#fff}
.footer__bar{border-top:1px solid rgba(255,255,255,.08);padding:18px 0;color:#64748b;font-size:13px}

/* ===== 响应式 ===== */
@media (max-width:980px){
  .hero__inner{grid-template-columns:1fr;text-align:center}
  .hero__subtitle{margin-left:auto;margin-right:auto}
  .hero__cta,.hero__stats{justify-content:center}
  .hero__media{display:none}
  .cards,.entries,.solutions,.cases{grid-template-columns:repeat(2,1fr)}
  .partners{grid-template-columns:repeat(3,1fr)}
  .footer__inner{grid-template-columns:1fr}
}
@media (max-width:640px){
  .nav__menu{position:fixed;top:72px;left:0;right:0;flex-direction:column;gap:0;
    background:#fff;box-shadow:0 12px 30px rgba(0,0,0,.1);padding:10px 24px;
    transform:translateY(-130%);transition:.3s}
  .nav__menu.open{transform:translateY(0)}
  .nav__menu a{padding:14px 0;color:var(--slate)!important;border-bottom:1px solid var(--line)}
  .nav__actions{display:none}
  .nav__toggle{display:flex}
  .hero__title{font-size:34px}
  .hero__stats{gap:24px}
  .cards,.entries,.solutions,.cases,.partners{grid-template-columns:1fr}
  .section{padding:60px 0}
  .section__title{font-size:26px}
}

/* ===== 在线体验门户（2026-08-27）===== */
.hero__hint{margin-top:16px;font-size:13.5px;color:rgba(255,255,255,.78)}
.svc-status{display:inline-flex;align-items:center;gap:8px;margin-top:10px;
  font-size:13px;color:var(--muted)}
.svc-status--notice{display:block;margin:0 0 22px;padding:12px 16px;border-radius:12px;
  background:#fff8e6;border:1px solid #ffe1a6;color:#8a5b00;font-size:14px}
.svc-status--notice .link{color:#b45309;font-weight:700;text-decoration:underline}
.portal-status{position:absolute;top:18px;right:18px;width:12px;height:12px;border-radius:50%;
  background:var(--muted);box-shadow:0 0 0 4px rgba(148,163,184,.15);transition:.3s}
.portal-status.is-online{background:#10b981;box-shadow:0 0 0 4px rgba(16,185,129,.18);animation:pulse 2s infinite}
.portal-status.is-offline{background:#ef4444;box-shadow:0 0 0 4px rgba(239,68,68,.15)}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.55}}
.portals{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:8px}
.portal-card{position:relative;display:flex;flex-direction:column;gap:12px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;
  box-shadow:var(--shadow);transition:.28s}
a.portal-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:rgba(37,99,235,.35)}
.portal-card h3{font-size:19px}
.portal-card p{color:var(--slate);font-size:14.5px}
.portal-card code{background:var(--bg-alt);border:1px solid var(--line);
  border-radius:6px;padding:1px 7px;font-size:13px;color:var(--blue)}
.portal-tag{display:inline-block;font-size:11px;font-style:normal;font-weight:600;margin-left:6px;
  padding:2px 9px;border-radius:999px;vertical-align:2px;
  background:rgba(37,99,235,.09);color:var(--blue)}
.portal-tag--primary{background:rgba(16,185,129,.12);color:#059669}
.portal-tag--dev{background:rgba(245,158,11,.14);color:#b45309}
.portal-feats{list-style:none;display:flex;flex-direction:column;gap:7px;font-size:13.5px;color:var(--slate)}
.portal-feats li::before{content:"✓";margin-right:8px;color:#10b981;font-weight:700}
.portal-btn{margin-top:auto;align-self:flex-start}
.portal-footnote{margin-top:auto;font-size:12.5px;color:var(--muted)}
@media (max-width:980px){
  .portals{grid-template-columns:1fr}
}

/* ===== 平台实时数据（2026-08-27）===== */
.live-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;margin-top:8px}
.live-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 16px;text-align:center;box-shadow:var(--shadow);transition:.28s}
.live-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.live-item b{display:block;font-size:34px;line-height:1.2;color:var(--blue);
  font-variant-numeric:tabular-nums}
.live-item span{font-size:13px;color:var(--muted)}
.live-updated{text-align:center;margin-top:18px;font-size:12.5px;color:var(--muted)}
@media (max-width:980px){.live-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.live-grid{grid-template-columns:1fr}}

/* ===== 服务健康横幅（2026-08-27）===== */
.svc-banner{background:var(--ink);padding:14px 0}
.svc-banner__inner{display:flex;align-items:center;flex-wrap:wrap;gap:18px 26px;
  font-size:13px;color:#cbd5e1}
.svc-banner__title{font-weight:700;color:#fff;letter-spacing:2px}
.svc-banner__item{display:inline-flex;align-items:center;gap:7px}
.svc-banner__item--meta{color:#94a3b8}
.svc-banner__item .portal-status{position:static;width:9px;height:9px;
  box-shadow:0 0 0 3px rgba(255,255,255,.08)}
.svc-banner__version{margin-left:auto;font-size:12px;color:#94a3b8;
  font-variant-numeric:tabular-nums}
@media (max-width:760px){
  .svc-banner__inner{gap:10px 16px;font-size:12px}
  .svc-banner__version{margin-left:0;width:100%}
}