*{box-sizing:border-box}
html{scroll-behavior:smooth}
:root{
  --bg:#f4f7fb;
  --paper:#ffffff;
  --ink:#0f172a;
  --muted:#64748b;
  --line:#e2e8f0;
  --line2:#cbd5e1;
  --soft:#f8fafc;
  --blue:#0f67ff;
  --blue2:#38bdf8;
  --dark:#0f172a;
  --shadow:0 18px 45px rgba(15,23,42,.08);
  --shadow-sm:0 8px 25px rgba(15,23,42,.06);
  --radius:24px;
  --container:1240px;
}
html,body{margin:0;padding:0}
body{font-family:Inter,"PingFang SC","Microsoft YaHei",Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.72}
a{text-decoration:none;color:inherit}
img{display:block;max-width:100%;height:auto}
button{font:inherit}
.container{width:min(var(--container), calc(100% - 34px));margin:0 auto}
.eyebrow{display:inline-block;color:var(--blue);font-size:12px;font-weight:900;letter-spacing:.16em;text-transform:uppercase}
.section-head{max-width:850px;margin:0 0 26px}
.section-head.center{text-align:center;margin-inline:auto}
.section-head h2,.hero-copy h1,.portal-copy h1,.detail-copy h1{font-size:clamp(40px,5vw,72px);line-height:.96;letter-spacing:-.045em;margin:14px 0}
.section-head p,.lead,.service-card p,.editorial-grid p,.product-body p,.download-card p,.step-grid p,.security-copy p,.security-list span,.article-grid p,.support-main p,.support-side span,.site-show-inner p,.faq-list p,.footer-brand p,.portal-copy p,.portal-cards p,.portal-link p,.detail-copy p,.detail-content p,.detail-content li{margin:0;color:var(--muted)}

.site-header{position:sticky;top:0;z-index:90;background:rgba(255,255,255,.9);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:18px;padding:15px 0;position:relative}
.brand{display:flex;align-items:center;gap:12px;min-width:max-content}
.brand-mark{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:var(--dark);color:#fff;font-weight:900;font-size:22px}
.brand-text{display:flex;flex-direction:column;gap:2px}.brand-text strong{font-size:18px;line-height:1}.brand-text em{font-style:normal;font-size:12px;color:var(--muted);letter-spacing:.08em}
.site-nav{display:flex;gap:16px;margin-left:auto}.site-nav a{font-weight:800;font-size:14px;color:#334155}.site-nav a:hover{color:var(--blue)}
.header-actions{display:flex;gap:10px}.nav-toggle{display:none;margin-left:auto;background:transparent;border:0;padding:0}.nav-toggle i{display:block;width:24px;height:2px;background:var(--ink);margin:5px 0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 18px;border-radius:999px;border:1px solid transparent;font-weight:900;cursor:pointer;transition:.2s ease}.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 14px 28px rgba(15,103,255,.18)}.btn-outline{background:#fff;color:var(--dark);border-color:var(--line2)}.btn-soft{background:#eff6ff;color:var(--blue);border-color:#bfdbfe}.btn-white{background:#fff;color:var(--dark);border-color:var(--line2)}

.hero{padding:48px 0 34px;background:linear-gradient(180deg,#ffffff 0%,#f4f7fb 100%)}
.hero-grid{display:grid;grid-template-columns:.94fr 1.06fr;gap:34px;align-items:center}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:28px 0 0}
.hero-showcase{background:#fff;border:1px solid var(--line);border-radius:32px;box-shadow:var(--shadow);padding:22px;display:grid;gap:16px}
.hero-device{min-height:370px;border-radius:26px;background:linear-gradient(180deg,#eff6ff 0%,#f8fafc 100%);display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:center;padding:22px}
.hero-device img{max-height:330px;margin:auto;filter:drop-shadow(0 20px 30px rgba(15,23,42,.12))}
.hero-device span{display:inline-block;background:#fff;color:var(--blue);font-size:13px;font-weight:900;padding:8px 12px;border-radius:999px;border:1px solid #bfdbfe}
.hero-device strong{display:block;margin-top:12px;font-size:42px;line-height:1;letter-spacing:-.04em}.hero-device p{margin-top:10px;color:var(--muted)}
.hero-mini-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.hero-mini-grid article{background:var(--soft);border:1px solid var(--line);border-radius:20px;padding:14px;text-align:center}.hero-mini-grid img{height:105px;object-fit:contain;margin:0 auto 8px}.hero-mini-grid strong{display:block}.hero-mini-grid span{color:var(--muted);font-size:13px}
.link-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:18px}
.link-strip a,.link-strip button{background:#fff;border:1px solid var(--line);border-radius:20px;padding:16px;text-align:left;box-shadow:var(--shadow-sm);cursor:pointer}.link-strip strong{display:block}.link-strip span{display:block;margin-top:6px;color:var(--muted);font-size:14px;word-break:break-word}

.services,.rich-copy,.products,.compare,.download,.security,.article-zone,.support,.site-show,.faq,.detail-content{padding:38px 0}
.service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.service-card{min-height:300px;background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow-sm);padding:22px;text-align:left;display:flex;flex-direction:column;justify-content:space-between}
.service-card.accent{border-color:#bfdbfe;background:#f8fbff}.service-card small{width:42px;height:42px;border-radius:12px;background:#eff6ff;color:var(--blue);display:grid;place-items:center;font-weight:900}
.service-card h3,.product-body h3,.step-grid h3,.portal-link h3{font-size:28px;line-height:1.06;letter-spacing:-.035em;margin:14px 0 8px}.service-card b{color:var(--blue);word-break:break-all}
.editorial-grid,.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.article-grid{grid-template-columns:1fr 1fr}
.editorial-grid article,.article-grid article{background:#fff;border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow-sm);padding:28px}.editorial-grid h2,.article-grid h2{font-size:clamp(30px,4vw,48px);line-height:1;letter-spacing:-.04em;margin:12px 0}.editorial-grid p+p,.article-grid p+p{margin-top:14px}

.product-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.product-card{display:grid;grid-template-columns:260px 1fr;gap:18px;background:#fff;border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow-sm);padding:20px}
.product-image{background:#f8fafc;border:1px solid var(--line);border-radius:24px;display:flex;align-items:center;justify-content:center;min-height:280px}.product-image img{max-height:235px;object-fit:contain;filter:drop-shadow(0 18px 26px rgba(15,23,42,.10))}
.product-body span{display:inline-block;background:#eff6ff;color:var(--blue);font-size:12px;font-weight:900;padding:7px 11px;border-radius:999px}.product-body ul,.support-tags{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0 0;padding:0;list-style:none}.product-body li,.support-tags span{background:var(--soft);border:1px solid var(--line);border-radius:999px;padding:8px 11px;font-size:13px;color:#334155}.text-link{display:inline-block;margin-top:16px;color:var(--blue);font-weight:900}

.compare-table{background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow-sm);overflow:hidden}
.compare-head,.compare-row{display:grid;grid-template-columns:1.2fr 1fr 1.35fr 1.15fr 1.55fr .65fr;gap:14px;align-items:center;padding:17px 20px}.compare-head{background:var(--dark);color:#fff;font-weight:900}.compare-row{border-top:1px solid var(--line)}.mini-btn{border:1px solid var(--line2);background:#fff;border-radius:999px;padding:9px 12px;cursor:pointer}
.download-grid,.security-grid,.support-grid,.portal-grid,.detail-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:18px;align-items:start}
.download-card,.security-copy,.support-main,.support-side,.portal-copy,.portal-cards,.detail-copy,.detail-image{background:#fff;border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow-sm);padding:28px}
.download-card h2,.security-copy h2,.support-main h2{font-size:clamp(34px,4vw,56px);line-height:1;letter-spacing:-.04em;margin:12px 0}.download-card p+p,.security-copy p+p{margin-top:12px}.download-card .btn{margin-top:22px}
.step-grid,.security-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.step-grid article,.security-list article,.support-side article{background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow-sm);padding:20px}.step-grid strong{font-size:34px;color:var(--blue)}.security-list strong,.support-side strong{display:block;font-size:18px}.security-list span,.support-side span{display:block;margin-top:8px}
.support-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}.support-side{display:grid;gap:12px}.support-side article{box-shadow:none}
.site-show-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;background:#fff;border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow-sm);padding:28px}.site-show-inner h2{font-size:42px;line-height:1;margin:10px 0}.site-show-inner p{max-width:720px}
.faq-list{display:grid;gap:14px;max-width:960px;margin:0 auto}.faq-list details{background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow-sm);padding:18px 20px}.faq-list summary{list-style:none;cursor:pointer;font-weight:900}.faq-list summary::-webkit-details-marker{display:none}.faq-list p{margin-top:10px}

.site-footer{margin-top:26px;background:var(--dark);color:#fff}.footer-grid{display:flex;justify-content:space-between;gap:24px;padding:32px 0}.footer-brand strong{font-size:26px}.footer-brand p{max-width:640px;margin-top:10px;color:#cbd5e1}.footer-links{display:flex;flex-direction:column;gap:8px;align-items:flex-end}.footer-contact{padding:12px 18px;border-radius:999px;background:transparent;color:#fff;border:1px solid rgba(255,255,255,.2);cursor:pointer}
.contact-modal{display:none;position:fixed;inset:0;z-index:120;align-items:center;justify-content:center}.contact-modal.open{display:flex}.contact-mask{position:absolute;inset:0;background:rgba(15,23,42,.6);backdrop-filter:blur(8px)}.contact-panel{position:relative;z-index:2;width:min(440px,calc(100% - 26px));padding:26px;background:#fff;border-radius:28px;box-shadow:0 32px 90px rgba(15,23,42,.22);text-align:center}.modal-close{position:absolute;right:14px;top:10px;background:transparent;border:0;font-size:34px;cursor:pointer}.contact-panel h2{font-size:36px;margin:0 0 8px}.contact-panel p{color:var(--muted);margin:0 0 16px}.qr-box{border-radius:22px;overflow:hidden;border:1px solid var(--line)}.modal-links{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-top:16px}.modal-links a{padding:10px 14px;border-radius:999px;background:var(--soft);border:1px solid var(--line)}
.float-contact{position:fixed;right:18px;bottom:18px;z-index:90;padding:14px 18px;border-radius:999px;border:0;background:var(--blue);color:#fff;font-weight:900;box-shadow:0 16px 34px rgba(37,99,235,.25);cursor:pointer}body.lock{overflow:hidden}

.portal-hero,.detail-hero{padding:50px 0 34px;background:#fff}.portal-copy h1{font-size:clamp(38px,5vw,68px);line-height:.98;letter-spacing:-.045em;margin:12px 0}.portal-cards{display:grid;gap:14px}.portal-cards article,.portal-link{background:#fff;border:1px solid var(--line);border-radius:22px;padding:20px;box-shadow:var(--shadow-sm)}.portal-cards small,.portal-link span{font-size:12px;font-weight:900;color:var(--blue);letter-spacing:.12em;text-transform:uppercase}.portal-cards h2{font-size:28px;line-height:1;margin:8px 0}.portal-cards strong{display:block;margin-top:8px;color:var(--blue);word-break:break-word}.portal-links{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.detail-image{display:flex;align-items:center;justify-content:center;background:linear-gradient(180deg,#eff6ff,#fff)}.detail-image img{max-height:420px;object-fit:contain;filter:drop-shadow(0 22px 30px rgba(15,23,42,.12))}
.detail-copy p+p{margin-top:12px}.detail-content-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.detail-content article{background:#fff;border:1px solid var(--line);border-radius:26px;box-shadow:var(--shadow-sm);padding:26px}.detail-content h2{font-size:32px;line-height:1.08;letter-spacing:-.035em;margin:0 0 12px}.detail-content ol{margin:0;padding-left:20px}.related-links{display:flex;flex-wrap:wrap;gap:10px}.related-links a{padding:10px 14px;border-radius:999px;background:#eff6ff;color:var(--blue);font-weight:900;border:1px solid #bfdbfe}

@media(max-width:1180px){
  .site-nav,.header-actions{display:none}.nav-toggle{display:block}.header-inner.open .site-nav{display:flex;position:absolute;top:72px;left:0;right:0;flex-direction:column;gap:0;background:#fff;border:1px solid var(--line);border-radius:20px;padding:10px;box-shadow:var(--shadow)}.header-inner.open .site-nav a{padding:12px 14px}.header-inner.open .header-actions{display:flex;position:absolute;top:462px;left:0;right:0;background:#fff;border:1px solid var(--line);border-radius:20px;padding:12px;gap:10px;box-shadow:var(--shadow)}
  .hero-grid,.download-grid,.security-grid,.support-grid,.portal-grid,.detail-grid{grid-template-columns:1fr}.link-strip,.service-grid{grid-template-columns:repeat(2,1fr)}.editorial-grid,.article-grid,.product-card,.detail-content-grid{grid-template-columns:1fr}.compare-head{display:none}.compare-row{grid-template-columns:1fr 1fr}.footer-grid,.site-show-inner{flex-direction:column;align-items:flex-start}.footer-links{align-items:flex-start}
}
@media(max-width:760px){
  .container{width:min(var(--container),calc(100% - 24px))}.section-head h2,.hero-copy h1,.portal-copy h1,.detail-copy h1{font-size:40px}.hero-actions,.support-actions,.header-inner.open .header-actions{flex-direction:column}.hero-device{grid-template-columns:1fr;text-align:center}.link-strip,.service-grid,.hero-mini-grid,.step-grid,.security-list,.compare-row,.portal-links{grid-template-columns:1fr}.btn{width:100%}.footer-links{width:100%}.footer-links a,.footer-contact{width:100%;text-align:center}
}