:root{
  --bg:#f5f9ff;
  --bg-soft:#eef5ff;
  --card:#ffffff;
  --text:#132745;
  --muted:#5f728e;
  --line:#dbe7f6;
  --line-2:#cfe0f5;
  --blue:#0a63d5;
  --blue-2:#1681f4;
  --navy:#0d2447;
  --shadow:0 18px 40px rgba(13,36,71,.08);
  --shadow-lg:0 28px 60px rgba(13,36,71,.14);
  --radius:28px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--text);background:#fff;line-height:1.7}
a{text-decoration:none;color:inherit}
img{display:block;max-width:100%;height:auto}
button{font:inherit}
.container{width:min(1180px,calc(100% - 36px));margin:0 auto}

.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.86);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.nav-wrap{min-height:78px;display:flex;align-items:center;gap:18px}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand-icon{width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,var(--blue),#27a3ff);color:#fff;display:grid;place-items:center;font-weight:950;box-shadow:0 12px 26px rgba(10,99,213,.25)}
.brand-text b{display:block;color:var(--navy);font-size:18px;line-height:1.1}
.brand-text em{display:block;font-style:normal;color:#74859e;font-size:12px;margin-top:2px}
.nav{display:flex;gap:20px;margin-left:auto;align-items:center}
.nav a{font-weight:800;color:#334b68;position:relative}
.nav a::after{content:"";position:absolute;left:0;bottom:-8px;width:0;height:2px;background:var(--blue);border-radius:999px;transition:.25s}
.nav a:hover::after{width:100%}
.nav-actions{display:flex;gap:10px;align-items:center}
.menu{display:none;margin-left:auto;background:transparent;border:0;padding:0;cursor:pointer}
.menu i{display:block;width:26px;height:2px;background:var(--navy);margin:5px 0;border-radius:999px}

.btn{border:0;border-radius:999px;padding:12px 18px;font-weight:900;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;white-space:nowrap;transition:.25s ease;gap:8px}
.btn:hover{transform:translateY(-2px)}
.primary{background:linear-gradient(135deg,var(--blue),var(--blue-2));color:#fff;box-shadow:0 16px 32px rgba(10,99,213,.26)}
.dark{background:var(--navy);color:#fff}
.white{background:#fff;color:var(--blue);border:1px solid #d5e6fb}
.ghost{background:#edf6ff;color:var(--blue)}
.big{padding:14px 22px}

.hero{padding:56px 0 42px;background:radial-gradient(circle at top right,rgba(48,168,255,.16),transparent 32%),linear-gradient(180deg,#f7fbff,#fff)}
.hero-grid{display:grid;grid-template-columns:1fr .92fr;gap:44px;align-items:center}
.refined-grid{gap:54px}
.crumb{display:flex;gap:8px;flex-wrap:wrap;color:#69809b;font-size:14px;margin-bottom:20px}
.crumb a{color:#315f99}
.tag{display:inline-flex;width:max-content;background:#eaf4ff;color:var(--blue);border-radius:999px;padding:7px 14px;font-size:13px;font-weight:950;letter-spacing:.02em;margin:0}
.tag.light{background:rgba(255,255,255,.14);color:#fff}
.hero h1,.subpage-head h1{font-size:clamp(42px,6vw,74px);line-height:1.02;letter-spacing:-.05em;color:var(--navy);margin:18px 0}
.lead{font-size:19px;color:#48607d;margin:0;max-width:700px}
.lead.centered{text-align:center;margin-inline:auto}
.hero-buttons{display:flex;flex-wrap:wrap;gap:12px;margin:30px 0}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.stats article{background:#fff;border:1px solid var(--line);border-radius:22px;padding:18px;box-shadow:0 10px 26px rgba(13,36,71,.06)}
.stats strong{display:block;color:var(--blue);font-size:22px;line-height:1.25}
.stats span{font-size:14px;color:#64768f;word-break:break-all}
.hero-visual-wrap{position:relative;padding:18px}
.hero-main-frame{border-radius:34px;overflow:hidden;box-shadow:var(--shadow-lg);border:1px solid var(--line);background:#fff}
.hero-main-frame img{aspect-ratio:1.25/1;object-fit:cover}
.hero-float{position:absolute;background:rgba(255,255,255,.95);border:1px solid var(--line);border-radius:22px;padding:14px 16px;box-shadow:var(--shadow);backdrop-filter:blur(10px)}
.hero-float span{display:block;font-size:12px;font-weight:900;color:#6b7d95;letter-spacing:.05em;text-transform:uppercase}
.hero-float strong{display:block;font-size:18px;color:var(--navy);margin-top:4px}
.hero-float-a{left:-8px;bottom:78px}
.hero-float-b{right:0;top:28px}

.brand-strip{padding:18px 0;background:#fff;border-bottom:1px solid #e4edf8}
.strip-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:10px}
.strip-grid span{background:#f6faff;border:1px solid var(--line);border-radius:999px;text-align:center;padding:10px;font-weight:900;color:#36516f;font-size:14px}

.section{padding:92px 0}
.soft{background:var(--bg)}
.section-head{text-align:center;margin:0 auto 34px;max-width:760px}
.section-head.left{text-align:left;margin-left:0}
.section-head h2{font-size:clamp(32px,4vw,50px);line-height:1.12;color:var(--navy);margin:14px 0 0;letter-spacing:-.04em}
.center-button{text-align:center;margin-top:28px}

.service-grid,.check-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.service-grid article,.check-grid article,.product,.security-card,.faq-list details{background:#fff;border:1px solid var(--line);border-radius:26px;padding:24px;box-shadow:0 12px 30px rgba(13,36,71,.06)}
.service-grid i{font-style:normal;display:grid;place-items:center;width:46px;height:46px;border-radius:16px;background:#eaf4ff;color:var(--blue);font-weight:950;margin-bottom:16px}
.service-grid h3,.check-grid h3,.product h3{margin:0 0 8px;color:var(--navy);font-size:22px}
.service-grid p,.check-grid p,.product p{margin:0;color:#5b6f89}
.official-showcase{background:linear-gradient(180deg,#fff 0%,#f8fbff 100%)}
.official-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.official-card{background:#fff;border:1px solid var(--line);border-radius:30px;padding:22px;box-shadow:var(--shadow)}
.browser-top{display:flex;gap:8px;padding-bottom:16px}
.browser-top span{width:10px;height:10px;border-radius:50%;background:#d7e4f5}
.official-card .browser-top{border-bottom:1px solid #edf3fb;margin-bottom:18px}
.official-content{display:flex;justify-content:space-between;align-items:flex-end;gap:20px}
.mini-label{font-size:12px;letter-spacing:.08em;color:#7590b0;text-transform:uppercase;font-weight:900;margin:0 0 8px}
.official-card h3{font-size:30px;line-height:1.15;margin:0 0 12px;color:var(--navy)}
.site-domain{display:block;color:var(--blue);font-size:18px;word-break:break-all}
.official-tags,.entry-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.official-tags span,.entry-tags span{background:#eef6ff;border:1px solid #d9e7fa;border-radius:999px;padding:8px 12px;color:#3b5880;font-weight:800;font-size:14px}
.official-primary{background:linear-gradient(180deg,#fff 0%,#f7fbff 100%)}
.official-secondary{background:linear-gradient(180deg,#fff 0%,#fbfdff 100%)}

.product-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:24px}
.refined-product{padding:18px}
.product-image-shell{padding:12px;border-radius:24px;background:linear-gradient(180deg,#f5f9ff,#ffffff);border:1px solid #edf3fb;margin-bottom:16px}
.product img{border-radius:20px;aspect-ratio:1.35/1;object-fit:cover}
.compare-wrap{background:#fff;border:1px solid var(--line);border-radius:28px;box-shadow:0 14px 36px rgba(13,36,71,.08);overflow:auto}
.compare-table{width:100%;border-collapse:collapse;min-width:860px}
.compare-table th{background:var(--navy);color:#fff;text-align:left;padding:18px}
.compare-table td{padding:18px;border-bottom:1px solid #e5edf7;color:#445b76}
.compare-table tr:last-child td{border-bottom:0}
.mini{border:0;background:#eaf4ff;color:var(--blue);border-radius:999px;padding:8px 14px;font-weight:900;cursor:pointer}

.download{padding:84px 0;background:linear-gradient(135deg,#071a3d,#0a63d5 70%,#35aaff);color:#fff}
.download-card{display:flex;justify-content:space-between;gap:24px;align-items:center}
.download h2{font-size:clamp(34px,4vw,54px);line-height:1.1;margin:14px 0}
.download p:not(.tag){font-size:18px;color:rgba(255,255,255,.86);margin:0}
.refined-download{padding:24px 0}

.check{background:#fff}
.flow-layout{display:grid;grid-template-columns:1fr 1fr;gap:42px;align-items:center}
.decorative-frame{padding:14px;border-radius:32px;background:linear-gradient(180deg,#f7fbff,#ffffff);border:1px solid var(--line);box-shadow:var(--shadow)}
.flow-img img{border-radius:24px;box-shadow:0 24px 56px rgba(13,36,71,.12)}
.steps{display:grid;gap:14px}
.steps article{display:grid;grid-template-columns:48px 1fr;gap:12px;background:#fff;border:1px solid var(--line);border-radius:22px;padding:18px;box-shadow:0 10px 26px rgba(13,36,71,.05)}
.steps span{grid-row:1/3;width:42px;height:42px;border-radius:14px;background:#eaf4ff;color:var(--blue);display:grid;place-items:center;font-weight:950}
.steps h3{margin:0;color:var(--navy)}
.steps p{grid-column:2;margin:0;color:#5b6f89}

.support-grid,.faq-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:36px;align-items:start}
.support-list{display:flex;flex-wrap:wrap;gap:10px;margin:10px 0 24px}
.support-list span{background:#fff;border:1px solid var(--line);border-radius:999px;padding:10px 14px;font-weight:800;color:#385473}
.support-actions{display:flex;gap:12px;flex-wrap:wrap}
.security-card h3{font-size:28px;line-height:1.2;margin:0 0 14px;color:var(--navy)}
.security-card ul{margin:0;padding-left:20px;color:#4a607b}
.security-card-refined{background:linear-gradient(180deg,#ffffff,#f7fbff)}

.faq-list{display:grid;gap:14px}
.faq-list details{padding:0 20px}
.faq-list summary{list-style:none;padding:18px 4px;cursor:pointer;font-weight:950;color:var(--navy);position:relative;padding-right:28px}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:'+';position:absolute;right:0;top:16px;font-size:22px;color:#7c93ae}
.faq-list details[open] summary::after{content:'−'}
.faq-list p{margin:0;padding:0 4px 18px;color:#5b6f89}

.final-cta{padding:80px 0;background:#fff}
.final-card{border-radius:34px;background:linear-gradient(135deg,var(--navy),var(--blue));color:#fff;padding:42px;display:flex;align-items:center;justify-content:space-between;gap:22px;box-shadow:0 24px 56px rgba(13,36,71,.18)}
.final-card h2{font-size:34px;line-height:1.2;margin:0;max-width:680px}
.final-actions{display:flex;gap:12px;flex-wrap:wrap}

.subpage-hero{padding-bottom:12px}
.subpage-head{text-align:center;max-width:900px}
.subpage-head .crumb{justify-content:center}
.site-entry-section{padding-top:40px}
.entry-grid{display:grid;gap:22px}
.entry-card{display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:34px;background:#fff;border:1px solid var(--line);border-radius:34px;padding:28px;box-shadow:var(--shadow)}
.entry-card + .entry-card{margin-top:22px}
.entry-card-primary{background:linear-gradient(135deg,#ffffff,#f7fbff)}
.entry-card-secondary{background:linear-gradient(135deg,#fbfdff,#f5f9ff)}
.entry-copy h2{font-size:40px;line-height:1.1;margin:0 0 12px;color:var(--navy)}
.entry-visual{display:flex;justify-content:center}
.browser-mock{width:100%;max-width:480px;background:#fff;border:1px solid var(--line);border-radius:26px;padding:16px;box-shadow:0 18px 42px rgba(13,36,71,.08)}
.browser-mock-dark{background:linear-gradient(180deg,#f7fbff,#ffffff)}
.browser-body{padding:10px 2px 4px}
.browser-pill{height:18px;border-radius:999px;background:#e7f0fc;width:45%;margin-bottom:18px}
.browser-pill.long{width:62%}
.browser-layout{height:130px;border-radius:20px;background:linear-gradient(180deg,#f0f6ff,#dfeeff);margin-bottom:14px}
.browser-layout.one{height:60px}
.browser-layout.two{display:grid;grid-template-columns:1fr 1fr;gap:12px;position:relative}
.browser-layout.two::before,.browser-layout.two::after{content:"";display:block;height:100%;border-radius:20px;background:linear-gradient(180deg,#ecf4ff,#d9e9ff)}
.browser-layout.three{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;position:relative;height:110px}
.browser-layout.three::before,.browser-layout.three::after,.browser-layout.three.dark::before{content:"";display:block;height:100%;border-radius:18px;background:linear-gradient(180deg,#e8f3ff,#d3e6ff)}
.browser-layout.dark{background:linear-gradient(180deg,#eaf3ff,#d8e9ff)}
.quick-actions-block{margin-top:28px}
.quick-action-card{background:linear-gradient(135deg,var(--navy),var(--blue));padding:28px;border-radius:30px;box-shadow:var(--shadow-lg)}
.quick-action-card h3{margin:0 0 18px;color:#fff;font-size:28px}
.quick-action-row{display:flex;gap:12px;flex-wrap:wrap}
.quick-action-card .white{background:#fff;color:var(--blue)}

footer{background:#06152f;color:#dce8ff;padding:52px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:36px}
footer b{font-size:24px}
footer p{color:#adc0dd;margin:10px 0}
footer a,.footer-btn{display:block;color:#dbe8ff;margin:8px 0;background:transparent;border:0;padding:0;text-align:left;cursor:pointer}

.modal{display:none;position:fixed;inset:0;z-index:100}
.modal.open{display:block}
.modal-bg{position:absolute;inset:0;background:rgba(6,21,47,.62);backdrop-filter:blur(6px)}
.modal-box{position:relative;margin:9vh auto 0;width:min(420px,calc(100% - 40px));background:#fff;border-radius:30px;padding:28px;box-shadow:0 30px 80px rgba(0,0,0,.3);text-align:center}
.close{position:absolute;top:12px;right:14px;border:0;background:#f0f5fb;width:34px;height:34px;border-radius:50%;font-size:24px;cursor:pointer}
.modal-box h2{margin:8px 0 18px;color:var(--navy)}
.qr-box{height:260px;border:2px dashed #c9d8eb;border-radius:22px;background:#f8fbff;margin-bottom:16px}
.modal-actions{display:flex;gap:10px}
.modal-actions a{flex:1;background:#eaf4ff;color:var(--blue);border-radius:14px;padding:10px;font-weight:900}
.float{position:fixed;right:22px;bottom:22px;z-index:45;border:0;border-radius:999px;background:var(--blue);color:#fff;padding:14px 18px;font-weight:950;box-shadow:0 16px 34px rgba(10,99,213,.32);cursor:pointer}
.lock{overflow:hidden}

@media (max-width:1100px){
  .nav,.nav-actions{display:none}
  .menu{display:block}
  .site-header.show .nav,.site-header.show .nav-actions{display:flex}
  .site-header.show .nav-wrap{flex-wrap:wrap;padding:16px 0;align-items:flex-start}
  .site-header.show .nav{width:100%;order:3;flex-direction:column;border-top:1px solid var(--line);padding-top:14px;margin-left:0}
  .site-header.show .nav-actions{order:4;width:100%;flex-wrap:wrap}
  .hero-grid,.flow-layout,.support-grid,.faq-grid,.official-grid,.entry-card{grid-template-columns:1fr}
  .service-grid,.check-grid{grid-template-columns:repeat(2,1fr)}
  .strip-grid,.product-cards{grid-template-columns:repeat(3,1fr)}
  .final-card,.download-card,.official-content{display:block}
  .official-content .btn{margin-top:18px}
  .final-actions{margin-top:22px}
  .hero-float-a{left:10px;bottom:20px}
  .hero-float-b{right:10px;top:10px}
}

@media (max-width:760px){
  .container{width:min(100% - 28px,1180px)}
  .section{padding:64px 0}
  .hero{padding:36px 0 34px}
  .hero h1,.subpage-head h1{font-size:42px}
  .lead{font-size:16px}
  .stats,.service-grid,.strip-grid,.product-cards,.check-grid,.official-grid{grid-template-columns:1fr}
  .entry-copy h2{font-size:32px}
  .final-card{padding:28px}
  .final-card h2{font-size:28px}
  .footer-grid{grid-template-columns:1fr}
  .download-card .btn{margin-top:22px}
  .hero-buttons .btn,.final-actions .btn,.quick-action-row .btn{width:100%}
  .modal-actions{flex-direction:column}
  .quick-action-card{padding:22px}
  .hero-float{position:static;margin-top:12px}
  .hero-visual-wrap{padding:0}
}

.qr-box.has-qr{height:auto;border:0;background:#fff;padding:8px}
.qr-box.has-qr img{width:100%;height:auto;border-radius:18px}