:root {
    --bg: #F5F7FF;
    --nav: rgba(12,18,40,.94);
    --title: #131A35;
    --primary: #5B6CFF;
    --deep: #16213E;
    --cyan: #00D4FF;
    --gold: #FFC857;
    --rose: #D94F70;
    --purple: #7A5CFF;
    --text: #1F2740;
    --muted: #66708A;
    --soft: #9AA4BA;
    --card: #FFFFFF;
    --border: rgba(91,108,255,.18);
    --shadow: 0 20px 46px rgba(25,43,91,.14);
    --gradient: linear-gradient(135deg, #5B6CFF 0%, #7A5CFF 48%, #00D4FF 100%);
    --max: 1240px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: "Microsoft YaHei", "PingFang SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", 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; }
button, input, textarea { font: inherit; }
main { min-height: 60vh; }
.site-header { position: sticky; top: 0; width: 100%; z-index: 9999; background: var(--nav); backdrop-filter: blur(14px); box-shadow: 0 8px 26px rgba(25,43,91,.16); }
.header-inner { max-width: 1280px; min-height: 72px; margin: 0 auto; padding: 0 20px; display: flex; align-items: center; justify-content: space-between; gap: 22px; }
.site-logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: #fff; font-size: 20px; font-weight: 800; letter-spacing: .5px; white-space: nowrap; }
.site-logo img { width: auto; max-width: 54px; max-height: 44px; object-fit: contain; }
.nav-core { display: flex; align-items: center; justify-content: center; gap: 10px; margin-left: auto; }
.nav-core a { color: #EEF2FF; text-decoration: none; border-radius: 999px; padding: 8px 12px; font-size: 15px; transition: .2s ease; white-space: nowrap; }
.nav-core a:hover, .nav-core a.active { color: #fff; background: rgba(0,212,255,.16); }
.header-actions { display: flex; align-items: center; gap: 10px; }
.main-btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 46px; padding: 10px 22px; border-radius: 999px; background: var(--gradient); color: #fff; text-decoration: none; font-weight: 800; border: 0; box-shadow: 0 14px 32px rgba(91,108,255,.22); transition: transform .2s ease, box-shadow .2s ease; }
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 18px 36px rgba(91,108,255,.3); }
.main-btn.compact { min-height: 40px; padding: 8px 18px; font-size: 14px; }
.secondary-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 10px 20px; border-radius: 999px; color: var(--primary); background: #fff; border: 1px solid var(--border); text-decoration: none; font-weight: 700; }
.menu-toggle { width: 42px; height: 42px; border: 1px solid rgba(255,255,255,.16); background: rgba(255,255,255,.08); border-radius: 50%; cursor: pointer; display: inline-flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; }
.menu-toggle span { width: 17px; height: 2px; border-radius: 4px; background: #fff; }
.mobile-menu-toggle { display: none; }
.drawer-mask { position: fixed; inset: 0; z-index: 10000; background: rgba(8,13,32,.56); opacity: 0; visibility: hidden; transition: .25s; }
.drawer-mask.open { opacity: 1; visibility: visible; }
.site-drawer { position: fixed; top: 0; right: 0; z-index: 10001; width: min(390px, 92vw); height: 100vh; padding: 22px; background: #fff; box-shadow: -20px 0 60px rgba(11,16,36,.24); transform: translateX(105%); transition: transform .28s ease; overflow-y: auto; }
.site-drawer.open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.drawer-brand { display: inline-flex; align-items: center; gap: 10px; color: var(--title); text-decoration: none; font-weight: 800; font-size: 20px; }
.drawer-brand img { max-width: 48px; max-height: 42px; object-fit: contain; }
.drawer-close { border: 0; background: #EEF1FF; color: var(--title); width: 38px; height: 38px; border-radius: 50%; font-size: 25px; cursor: pointer; }
.drawer-intro { color: var(--muted); font-size: 14px; margin: 18px 0; }
.drawer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.drawer-nav a { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 11px 12px; border-radius: 13px; text-decoration: none; color: var(--text); background: #F7F8FF; border: 1px solid transparent; }
.drawer-nav a:hover { border-color: var(--border); color: var(--primary); }
.drawer-btn { width: 100%; margin-top: 20px; }
.container { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }
.section { padding: 78px 0; }
.section-sm { padding: 48px 0; }
.section-soft { background: linear-gradient(180deg, rgba(234,247,255,.78), rgba(245,247,255,.15)); }
.section-dark { background: #11182F; color: #EEF2FF; }
.section-kicker { display: inline-flex; align-items: center; gap: 8px; color: var(--primary); font-size: 13px; font-weight: 800; letter-spacing: 1.2px; text-transform: uppercase; margin-bottom: 10px; }
.section-kicker::before { content: ""; width: 28px; height: 3px; border-radius: 9px; background: linear-gradient(90deg, var(--gold), var(--cyan)); }
h1, h2, h3, .section-title { color: var(--title); line-height: 1.25; margin-top: 0; }
h1 { font-size: clamp(42px, 7vw, 78px); margin-bottom: 18px; letter-spacing: -2px; }
h2 { font-size: clamp(28px, 4vw, 44px); margin-bottom: 16px; }
h3 { font-size: 21px; margin-bottom: 10px; }
p { margin: 0 0 16px; }
.lead { font-size: clamp(17px, 2.2vw, 21px); color: var(--muted); max-width: 780px; }
.text-link { color: var(--primary); text-decoration: none; font-weight: 700; }
.text-link:hover { text-decoration: underline; }
.hero { position: relative; overflow: hidden; padding: 80px 0 70px; background: radial-gradient(circle at 15% 20%, rgba(122,92,255,.17), transparent 30%), radial-gradient(circle at 85% 18%, rgba(0,212,255,.18), transparent 28%), linear-gradient(135deg, #F7F4FF 0%, #EFF8FF 55%, #FFF5FA 100%); }
.hero::after { content: ""; position: absolute; width: 420px; height: 420px; border-radius: 50%; right: -180px; bottom: -240px; background: rgba(255,200,87,.18); filter: blur(2px); }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.02fr .98fr; align-items: center; gap: 58px; }
.hero-copy .eyebrow { display: inline-flex; align-items: center; padding: 7px 13px; border-radius: 999px; color: var(--primary); background: rgba(91,108,255,.09); border: 1px solid var(--border); font-weight: 800; font-size: 13px; margin-bottom: 18px; }
.hero-subtitle { font-size: clamp(23px, 3.2vw, 34px); font-weight: 800; color: var(--deep); margin-bottom: 16px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 26px 0; }
.hero-points { display: flex; flex-wrap: wrap; gap: 10px; padding: 0; margin: 0; list-style: none; }
.hero-points li { padding: 8px 12px; border-radius: 999px; background: rgba(255,255,255,.86); border: 1px solid var(--border); color: var(--muted); font-size: 14px; }
.hero-visual { position: relative; padding: 26px; border-radius: 34px; background: rgba(255,255,255,.62); border: 1px solid rgba(255,255,255,.7); box-shadow: var(--shadow); backdrop-filter: blur(10px); }
.hero-visual img { width: 100%; max-height: 560px; object-fit: contain; border-radius: 24px; }
.floating-card { position: absolute; padding: 12px 15px; border-radius: 16px; background: rgba(17,24,47,.92); color: #fff; box-shadow: 0 16px 34px rgba(17,24,47,.2); font-size: 13px; }
.floating-card.top { top: 18px; right: -18px; }
.floating-card.bottom { left: -18px; bottom: 24px; }
.highlight-strip { position: relative; margin-top: -26px; z-index: 2; }
.highlight-grid { display: grid; grid-template-columns: repeat(4,1fr); background: #fff; border: 1px solid var(--border); border-radius: 24px; box-shadow: var(--shadow); overflow: hidden; }
.highlight-item { padding: 25px; }
.highlight-item + .highlight-item { border-left: 1px solid var(--border); }
.highlight-item strong { display: block; color: var(--title); font-size: 17px; margin-bottom: 5px; }
.highlight-item span { display: block; color: var(--muted); font-size: 14px; line-height: 1.65; }
.channel-pills { display: flex; flex-wrap: wrap; gap: 12px; }
.channel-pill { flex: 1 1 190px; min-height: 82px; padding: 14px 16px; border-radius: 18px; border: 1px solid var(--border); background: rgba(255,255,255,.82); text-decoration: none; transition: .2s; }
.channel-pill:hover { transform: translateY(-3px); background: #fff; box-shadow: 0 14px 30px rgba(25,43,91,.1); }
.channel-pill strong { display: block; color: var(--title); margin-bottom: 2px; }
.channel-pill span { color: var(--muted); font-size: 13px; line-height: 1.55; }
.split { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 56px; }
.split.reverse .media { order: 2; }
.media { border-radius: 28px; background: #fff; border: 1px solid var(--border); box-shadow: var(--shadow); padding: 18px; }
.media img { width: 100%; max-height: 520px; object-fit: contain; border-radius: 20px; }
.copy p { color: var(--muted); }
.check-list { display: grid; gap: 10px; padding: 0; margin: 22px 0; list-style: none; }
.check-list li { position: relative; padding-left: 28px; color: var(--text); }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: 1px; width: 20px; height: 20px; display: grid; place-items: center; border-radius: 50%; background: rgba(91,108,255,.12); color: var(--primary); font-weight: 900; font-size: 12px; }
.card-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; }
.card-grid.two { grid-template-columns: repeat(2,1fr); }
.card, .zone-card, .info-card, .review-card { background: #fff; border: 1px solid var(--border); box-shadow: var(--shadow); border-radius: 22px; }
.card { padding: 24px; }
.card img { width: 100%; max-height: 270px; object-fit: contain; border-radius: 16px; margin-bottom: 18px; background: #F7F8FF; }
.card p { color: var(--muted); }
.card .mini-list { padding-left: 18px; color: var(--muted); margin-bottom: 12px; }
.zone-card { overflow: hidden; display: flex; flex-direction: column; }
.zone-card img { width: 100%; height: 290px; object-fit: contain; background: linear-gradient(135deg,#EEF2FF,#F9F5FF); padding: 16px; }
.zone-card-content { padding: 25px; flex: 1; }
.zone-card-content p { color: var(--muted); }
.stat-row { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; margin-top: 20px; }
.stat { padding: 16px; border-radius: 16px; background: #F6F7FF; }
.stat b { display: block; color: var(--primary); font-size: 20px; }
.stat span { color: var(--muted); font-size: 13px; }
.security-box { display: grid; grid-template-columns: 1fr 1fr; border-radius: 28px; overflow: hidden; background: #11182F; box-shadow: var(--shadow); }
.security-copy { padding: clamp(30px,5vw,58px); }
.security-copy h2, .security-copy h3 { color: #fff; }
.security-copy p, .security-copy li { color: #CDD5F1; }
.security-media { display: grid; grid-template-columns: 1fr 1fr; background: linear-gradient(135deg, rgba(91,108,255,.45), rgba(0,212,255,.2)); padding: 22px; gap: 14px; align-items: center; }
.security-media img { width: 100%; max-height: 330px; object-fit: contain; border-radius: 18px; background: rgba(255,255,255,.88); padding: 10px; }
.review-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.review-card { padding: 22px; }
.review-card p { color: var(--muted); }
.review-meta { display: flex; align-items: center; gap: 10px; margin-top: 16px; }
.avatar { width: 38px; height: 38px; border-radius: 50%; display: grid; place-items: center; color: #fff; background: var(--gradient); font-weight: 800; }
.review-meta b { color: var(--title); }
.faq-list { display: grid; gap: 13px; }
details { background: #fff; border: 1px solid var(--border); border-radius: 18px; padding: 0 20px; box-shadow: 0 10px 26px rgba(25,43,91,.07); }
summary { cursor: pointer; list-style: none; padding: 18px 32px 18px 0; font-weight: 800; color: var(--title); position: relative; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 0; top: 15px; color: var(--primary); font-size: 24px; }
details[open] summary::after { content: "−"; }
details p { color: var(--muted); padding-bottom: 18px; }
.notice { padding: 24px; border-radius: 22px; background: linear-gradient(135deg, #FFF4D6, #EFF8FF); border: 1px solid rgba(255,200,87,.45); }
.notice h3 { margin-bottom: 8px; }
.page-hero { padding: 66px 0 54px; background: radial-gradient(circle at 12% 20%, rgba(122,92,255,.15), transparent 30%), radial-gradient(circle at 86% 25%, rgba(0,212,255,.12), transparent 28%), linear-gradient(135deg,#F8F5FF,#EEF8FF); }
.page-hero-grid { display: grid; grid-template-columns: 1fr .72fr; gap: 44px; align-items: center; }
.page-hero h1 { font-size: clamp(36px,6vw,64px); }
.page-hero img { width: 100%; max-height: 400px; object-fit: contain; border-radius: 26px; background: rgba(255,255,255,.65); padding: 18px; box-shadow: var(--shadow); }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; color: var(--muted); font-size: 14px; margin-bottom: 14px; }
.breadcrumb a { color: var(--primary); text-decoration: none; }
.content-layout { display: grid; grid-template-columns: minmax(0,1fr) 310px; gap: 34px; align-items: start; }
.article { background: #fff; border-radius: 26px; border: 1px solid var(--border); box-shadow: var(--shadow); padding: clamp(24px,4vw,44px); }
.article h2 { font-size: 30px; margin-top: 38px; }
.article h2:first-child { margin-top: 0; }
.article p { color: #4F5871; }
.article ul, .article ol { color: #4F5871; padding-left: 22px; }
.article blockquote { margin: 24px 0; padding: 20px 22px; border-left: 4px solid var(--primary); background: #F5F7FF; border-radius: 0 16px 16px 0; color: var(--muted); }
.sidebar { position: sticky; top: 96px; display: grid; gap: 18px; }
.sidebar-card { background: #fff; border: 1px solid var(--border); border-radius: 20px; padding: 20px; box-shadow: 0 14px 34px rgba(25,43,91,.09); }
.sidebar-card h3 { font-size: 18px; }
.sidebar-card a { display: block; padding: 9px 0; color: var(--muted); text-decoration: none; border-bottom: 1px dashed rgba(91,108,255,.15); }
.sidebar-card a:last-child { border-bottom: 0; }
.sidebar-card a:hover { color: var(--primary); }
.step-list { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; counter-reset: step; }
.step { position: relative; padding: 24px 20px; background: #fff; border: 1px solid var(--border); border-radius: 20px; box-shadow: 0 12px 26px rgba(25,43,91,.08); counter-increment: step; }
.step::before { content: counter(step); display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; color: #fff; background: var(--gradient); font-weight: 800; margin-bottom: 14px; }
.step p { color: var(--muted); font-size: 14px; }
.cta-band { display: flex; align-items: center; justify-content: space-between; gap: 30px; padding: 34px; border-radius: 26px; background: linear-gradient(135deg,#182243,#252A5A 55%,#173E5B); color: #fff; }
.cta-band h2 { color: #fff; margin-bottom: 8px; }
.cta-band p { color: #CBD5F5; margin-bottom: 0; max-width: 760px; }
.site-footer { background: #0B1024; color: #EEF2FF; margin-top: 0; }
.footer-inner { width: min(var(--max),calc(100% - 40px)); margin: 0 auto; display: grid; grid-template-columns: 1.1fr 2fr; gap: 60px; padding: 64px 0 46px; }
.footer-brand p { color: #AEB8D8; max-width: 430px; margin-top: 18px; }
.footer-links { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; }
.footer-links h3 { color: #fff; font-size: 16px; }
.footer-links a { display: block; color: #AEB8D8; text-decoration: none; margin: 8px 0; font-size: 14px; }
.footer-links a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 18px 20px; text-align: center; color: #8F9ABF; font-size: 13px; }
.footer-bottom p { margin: 0; }
.mobile-bottom-nav { display: none; }
@media (max-width: 1020px) {
    .nav-core { display: none; }
    .mobile-menu-toggle { display: inline-flex; }
    .desktop-menu-toggle { display: none; }
    .header-inner { justify-content: space-between; }
    .site-logo { margin-right: auto; }
    .hero-grid, .page-hero-grid, .split, .content-layout { grid-template-columns: 1fr; }
    .hero-copy { text-align: center; }
    .hero-copy .lead { margin-left: auto; margin-right: auto; }
    .hero-actions, .hero-points { justify-content: center; }
    .hero-visual { max-width: 680px; margin: 0 auto; }
    .split.reverse .media { order: 0; }
    .highlight-grid { grid-template-columns: repeat(2,1fr); }
    .highlight-item + .highlight-item { border-left: 0; }
    .highlight-item:nth-child(even) { border-left: 1px solid var(--border); }
    .highlight-item:nth-child(n+3) { border-top: 1px solid var(--border); }
    .card-grid, .review-grid { grid-template-columns: repeat(2,1fr); }
    .step-list { grid-template-columns: repeat(2,1fr); }
    .sidebar { position: static; grid-template-columns: repeat(2,1fr); }
    .footer-inner { grid-template-columns: 1fr; }
}
@media (max-width: 700px) {
    body { padding-bottom: 70px; }
    .header-inner { min-height: 64px; padding: 0 12px; gap: 8px; }
    .site-logo span { font-size: 17px; }
    .site-logo img { max-width: 40px; max-height: 36px; }
    .main-btn.compact { padding: 7px 13px; font-size: 13px; min-height: 36px; }
    .menu-toggle { width: 38px; height: 38px; }
    .site-logo { margin: 0; flex: 1; justify-content: center; }
    .hero { padding-top: 54px; }
    .container { width: min(100% - 26px, var(--max)); }
    .section { padding: 58px 0; }
    h1 { letter-spacing: -1px; }
    .hero-grid { gap: 34px; }
    .hero-visual { padding: 14px; }
    .floating-card { display: none; }
    .highlight-grid { grid-template-columns: 1fr; }
    .highlight-item:nth-child(even) { border-left: 0; }
    .highlight-item:nth-child(n+2) { border-top: 1px solid var(--border); }
    .channel-pill { flex-basis: 100%; }
    .card-grid, .card-grid.two, .review-grid, .security-box, .security-media, .step-list, .sidebar { grid-template-columns: 1fr; }
    .zone-card img { height: auto; max-height: 290px; }
    .security-copy { padding: 30px 24px; }
    .security-media { padding: 16px; }
    .stat-row { grid-template-columns: 1fr; }
    .cta-band { align-items: flex-start; flex-direction: column; padding: 26px; }
    .drawer-nav { grid-template-columns: 1fr; }
    .footer-inner { width: min(100% - 30px,var(--max)); padding: 50px 0 34px; gap: 36px; }
    .footer-links { grid-template-columns: repeat(2,1fr); }
    .mobile-bottom-nav { position: fixed; z-index: 9000; left: 10px; right: 10px; bottom: 8px; height: 58px; border-radius: 20px; padding: 6px; display: grid; grid-template-columns: repeat(4,1fr); background: rgba(11,16,36,.95); backdrop-filter: blur(12px); box-shadow: 0 12px 34px rgba(11,16,36,.28); }
    .mobile-bottom-nav a { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 1px; color: #CDD5F1; text-decoration: none; font-size: 11px; }
    .mobile-bottom-nav a span { color: #fff; font-size: 17px; line-height: 1; }
}