:root{--bg:#F5F7FF;--ink:#1F2740;--muted:#66708A;--soft:#9AA4BA;--title:#131A35;--brand:#5B6CFF;--deep:#16213E;--cyan:#00D4FF;--gold:#FFC857;--accent:#7A5CFF;--card:#fff;--border:rgba(91,108,255,.18);--shadow:0 20px 46px rgba(25,43,91,.14);--radius:24px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;line-height:1.75;overflow-x:hidden}body.drawer-open{overflow:hidden}a{color:inherit}img{max-width:100%;height:auto;display:block}.site-header{position:sticky;top:0;width:100%;z-index:9999;background:rgba(12,18,40,.94);backdrop-filter:blur(12px);box-shadow:0 8px 26px rgba(25,43,91,.16)}.header-inner{max-width:1280px;margin:0 auto;min-height:72px;padding:0 24px;display:flex;align-items:center;justify-content:space-between;gap:20px}.site-logo{display:inline-flex;align-items:center;gap:10px;color:#fff;text-decoration:none;white-space:nowrap}.site-logo img{max-height:44px;width:auto}.site-logo strong{font-size:18px;letter-spacing:.02em}.nav-core{display:flex;align-items:center;gap:8px}.nav-core a{color:#EEF2FF;text-decoration:none;border-radius:999px;padding:8px 12px;font-size:15px}.nav-core a:hover,.nav-core a.active{color:#fff;background:rgba(0,212,255,.16)}.header-actions{display:flex;align-items:center;gap:12px}.main-btn,.secondary-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 22px;border-radius:999px;text-decoration:none;font-weight:700;transition:.2s ease}.main-btn{background:linear-gradient(135deg,#5B6CFF 0%,#7A5CFF 48%,#00D4FF 100%);color:#fff;box-shadow:0 14px 32px rgba(91,108,255,.22)}.main-btn:hover{transform:translateY(-2px)}.main-btn.compact{min-height:40px;padding:0 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var(--border);border-radius:18px;box-shadow:var(--shadow);padding:14px 18px;max-width:210px;font-size:13px;color:var(--muted)}.section{padding:74px 0}.section.alt{background:#EEF6FF}.section.soft{background:linear-gradient(180deg,#fff8fd 0%,#f5f7ff 100%)}.section-head{max-width:760px;margin-bottom:30px}.section-title{font-size:clamp(28px,4vw,44px);line-height:1.2;margin:8px 0 12px;color:var(--title)}.section-desc{color:var(--muted);margin:0}.card,.zone-card,.info-card,.review-card,.faq-card{background:#fff;border:1px solid var(--border);box-shadow:var(--shadow);border-radius:var(--radius)}.highlight-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:-28px;position:relative;z-index:3}.info-card{padding:24px}.info-card h3,.zone-card h3{margin:0 0 8px;color:var(--title)}.info-card p,.zone-card p{margin:0;color:var(--muted);font-size:14px}.channel-row{display:flex;flex-wrap:wrap;gap:12px}.channel-pill{flex:1 1 200px;text-decoration:none;background:#fff;border:1px solid var(--border);padding:16px 18px;border-radius:999px;display:flex;align-items:center;gap:10px}.channel-pill strong{color:var(--brand);white-space:nowrap}.channel-pill span{color:var(--muted);font-size:13px}.split{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:stretch}.feature-media{display:grid;grid-template-columns:.9fr 1.1fr;gap:34px;align-items:center}.feature-media.reverse{grid-template-columns:1.1fr .9fr}.content-img{width:100%;border-radius:28px;background:#fff;border:1px solid var(--border);box-shadow:var(--shadow);object-fit:contain}.copy-card{padding:34px}.copy-card p{color:var(--muted)}.mini-list{display:grid;gap:10px;margin:20px 0}.mini-list span{padding:10px 12px;border-radius:14px;background:#F6F8FF;color:#47506a}.text-link{color:var(--brand);font-weight:700;text-decoration:none}.text-link:hover{text-decoration:underline}.three-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.zone-card{overflow:hidden}.zone-card 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h1{font-size:clamp(36px,5vw,58px)}.inner-hero p{color:var(--muted);font-size:16px}.inner-hero img{width:100%;max-height:380px;object-fit:contain;border-radius:28px}.content-section{padding:64px 0}.article-card{padding:34px}.article-card h2{color:var(--title);margin-top:0;font-size:28px}.article-card p{color:var(--muted)}.service-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}.service-item{padding:26px;background:#fff;border:1px solid var(--border);border-radius:20px}.service-item h3{margin-top:0;color:var(--title)}.service-item p{margin-bottom:0;color:var(--muted)}.guide-list{counter-reset:steps;display:grid;gap:14px}.guide-step{position:relative;padding:18px 18px 18px 62px;background:#fff;border:1px solid var(--border);border-radius:18px}.guide-step:before{counter-increment:steps;content:counter(steps);position:absolute;left:18px;top:18px;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:#EEF1FF;color:var(--brand);font-weight:800}.callout{padding:26px 30px;border-radius:22px;background:linear-gradient(135deg,#11182F,#182553);color:#eef2ff}.callout h2,.callout h3{color:#fff;margin-top:0}.callout p{color:#dbe1f2}.breadcrumbs{font-size:13px;color:var(--soft);margin-bottom:10px}.breadcrumbs a{color:var(--brand);text-decoration:none}.site-footer{background:#0B1024;color:#EEF2FF;padding:52px 0 20px;margin-top:40px}.footer-inner{width:min(1180px,calc(100% - 40px));margin:0 auto;display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:32px}.footer-brand p{color:#aeb8d0;max-width:430px}.footer-logo{margin-bottom:12px}.footer-links{display:grid;align-content:start;gap:8px}.footer-links h3{margin:0 0 8px;color:#fff;font-size:15px}.footer-links a{color:#b9c3d9;text-decoration:none;font-size:14px}.footer-links a:hover{color:#fff}.footer-bottom{width:min(1180px,calc(100% - 40px));margin:30px auto 0;border-top:1px solid rgba(255,255,255,.1);padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:#8995ae;font-size:12px}.mobile-tabbar{display:none}.banner-strip{padding:34px;border-radius:28px;background:linear-gradient(135deg,#5B6CFF,#7A5CFF 52%,#00D4FF);color:#fff;display:flex;align-items:center;justify-content:space-between;gap:24px}.banner-strip h2{margin:0;color:#fff}.banner-strip p{margin:6px 0 0;color:#eef2ff}.banner-strip .secondary-btn{white-space:nowrap}.list-clean{padding:0;margin:18px 0;list-style:none;display:grid;gap:10px}.list-clean li{padding-left:22px;position:relative;color:var(--muted)}.list-clean 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@media (max-width:1020px){.nav-core{display:none}.desktop-only{display:none}.mobile-only{display:inline-flex}.hero-grid,.inner-hero-grid,.feature-media,.feature-media.reverse{grid-template-columns:1fr}.hero-visual{max-width:680px;margin:0 auto}.highlight-grid{grid-template-columns:repeat(2,1fr);margin-top:24px}.three-grid,.review-grid{grid-template-columns:repeat(2,1fr)}.footer-inner{grid-template-columns:1.4fr 1fr 1fr}.footer-links:last-child{grid-column:2/4}.inner-hero img{max-height:320px}.floating-note{right:14px}}
@media (max-width:720px){body{padding-bottom:68px}.header-inner{min-height:64px;padding:0 14px;gap:10px}.site-logo strong{display:none}.site-logo img{max-height:38px}.header-actions{gap:8px}.main-btn.compact{min-height:38px;padding:0 13px;font-size:13px}.menu-toggle{width:38px;height:38px}.hero{padding:48px 0 44px}.shell{width:min(100% - 28px,1180px)}.hero h1,.inner-hero h1{font-size:42px}.hero-subtitle{font-size:22px}.hero-actions{align-items:stretch}.hero-actions a{flex:1}.highlight-grid,.split,.security-grid,.three-grid,.review-grid,.service-grid{grid-template-columns:1fr}.section,.content-section{padding:52px 0}.copy-card,.article-card{padding:24px}.channel-pill{border-radius:20px;display:block}.channel-pill strong{display:block;margin-bottom:4px}.footer-inner{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.footer-links:last-child{grid-column:auto}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:6px}.mobile-tabbar{position:fixed;left:10px;right:10px;bottom:10px;z-index:9998;display:grid;grid-template-columns:repeat(4,1fr);background:rgba(12,18,40,.94);backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.1);border-radius:18px;box-shadow:0 16px 38px rgba(10,15,40,.25)}.mobile-tabbar a{text-align:center;color:#eef2ff;text-decoration:none;font-size:12px;padding:10px 4px}.banner-strip{display:block;padding:26px}.banner-strip .secondary-btn{margin-top:18px}.floating-note{position:static;margin-top:10px;max-width:none}.drawer-nav{grid-template-columns:1fr}.inner-hero{padding:42px 0 34px}}