:root {
  --bg: #F5F7FF; --nav: rgba(12,18,40,.94); --title: #131A35; --brand: #5B6CFF;
  --deep: #16213E; --cyan: #00D4FF; --gold: #FFC857; --rose: #D94F70;
  --lavender: #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%);
  --radius: 22px; --max: 1240px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: "PingFang SC","Microsoft YaHei",system-ui,-apple-system,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, a { -webkit-tap-highlight-color: transparent; }
.skip-link { position: fixed; top: 8px; left: 8px; z-index: 12000; transform: translateY(-140%); background: #fff; color: #11182f; padding: 8px 14px; border-radius: 10px; }
.skip-link:focus { transform: none; }
.site-header { position: sticky; top: 0; width: 100%; z-index: 9999; background: var(--nav); backdrop-filter: blur(12px); box-shadow: 0 8px 26px rgba(25,43,91,.16); }
.header-inner { width: min(calc(100% - 32px), var(--max)); margin: 0 auto; min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.site-logo { display: inline-flex; align-items: center; gap: 10px; color: #fff; text-decoration: none; white-space: nowrap; }
.site-logo img { width: 42px; height: 42px; object-fit: contain; }
.site-logo strong { font-size: 18px; letter-spacing: .02em; }
.nav-core { display: flex; align-items: center; justify-content: center; gap: 8px; margin-left: auto; }
.nav-core a { color: #EEF2FF; text-decoration: none; border-radius: 999px; padding: 8px 12px; font-size: 15px; white-space: nowrap; transition: .2s ease; }
.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; min-height: 48px; padding: 12px 24px; background: var(--gradient); color: #fff; text-decoration: none; font-weight: 700; border-radius: 999px; box-shadow: 0 14px 32px rgba(91,108,255,.22); border: 0; 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: 48px; padding: 11px 22px; border: 1px solid rgba(91,108,255,.28); color: var(--brand); background: rgba(255,255,255,.72); border-radius: 999px; text-decoration: none; font-weight: 700; }
.menu-toggle { width: 42px; height: 42px; border: 1px solid rgba(255,255,255,.2); background: rgba(255,255,255,.08); border-radius: 14px; padding: 10px; cursor: pointer; display: inline-grid; align-content: center; gap: 4px; }
.menu-toggle span { height: 2px; width: 100%; background: #fff; border-radius: 2px; }
.mobile-menu-toggle { display: none; }
.drawer-overlay { position: fixed; inset: 0; background: rgba(6,10,25,.52); opacity: 0; pointer-events: none; z-index: 10020; transition: opacity .25s ease; }
.site-drawer { position: fixed; top: 0; right: 0; width: min(390px, 92vw); height: 100dvh; padding: 24px; background: #11182F; color: #EEF2FF; z-index: 10030; transform: translateX(105%); transition: transform .28s ease; overflow-y: auto; box-shadow: -24px 0 70px rgba(5,10,30,.32); }
.drawer-open .drawer-overlay { opacity: 1; pointer-events: auto; }
.drawer-open .site-drawer { transform: none; }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 22px; }
.drawer-close { width: 42px; height: 42px; border: 0; border-radius: 14px; color: #fff; background: rgba(255,255,255,.1); font-size: 28px; cursor: pointer; }
.drawer-nav { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 10px; }
.drawer-nav a { text-decoration: none; color: #EEF2FF; padding: 11px 12px; border: 1px solid rgba(255,255,255,.1); border-radius: 14px; background: rgba(255,255,255,.04); }
.drawer-nav a:hover { background: rgba(0,212,255,.12); }
.drawer-note { margin-top: 20px; padding: 16px; color: #C6CDE2; font-size: 13px; background: rgba(91,108,255,.1); border-radius: 16px; }
main { min-height: 60vh; }
.container { width: min(calc(100% - 32px), var(--max)); margin: 0 auto; }
.section { padding: 86px 0; }
.section-tight { padding: 52px 0; }
.section-head { max-width: 720px; margin-bottom: 34px; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-kicker { display: inline-flex; align-items: center; gap: 8px; color: var(--brand); font-weight: 800; letter-spacing: .08em; font-size: 13px; text-transform: uppercase; }
.section-kicker::before { content: ""; width: 28px; height: 3px; border-radius: 3px; background: var(--gradient); }
h1,h2,h3,.section-title { color: var(--title); line-height: 1.18; margin-top: 0; }
h1 { font-size: clamp(42px, 7vw, 78px); letter-spacing: -.04em; margin-bottom: 18px; }
h2 { font-size: clamp(28px, 4.2vw, 44px); letter-spacing: -.025em; margin-bottom: 16px; }
h3 { font-size: 21px; margin-bottom: 10px; }
p { margin-top: 0; }
.lead { font-size: clamp(18px,2vw,22px); color: var(--muted); }
.muted { color: var(--muted); }
.text-link { color: var(--brand); text-decoration: none; font-weight: 700; }
.text-link:hover { text-decoration: underline; }
.hero { position: relative; overflow: hidden; padding: 76px 0 64px; background: radial-gradient(circle at 85% 14%, rgba(0,212,255,.20), transparent 28%), radial-gradient(circle at 18% 18%, rgba(217,79,112,.12), transparent 28%), linear-gradient(135deg,#F3EEFF 0%,#EAF7FF 52%,#FFF7FC 100%); }
.hero::before,.hero::after { content:""; position:absolute; border-radius:50%; filter: blur(2px); pointer-events:none; }
.hero::before { width: 260px; height: 260px; left: -90px; bottom: -110px; background: rgba(122,92,255,.12); }
.hero::after { width: 200px; height: 200px; right: 8%; top: 9%; border: 1px solid rgba(91,108,255,.18); }
.hero-grid { display: grid; grid-template-columns: 1.02fr .98fr; align-items: center; gap: 56px; position: relative; z-index: 1; }
.hero-copy .eyebrow { display: inline-flex; padding: 7px 13px; margin-bottom: 18px; border-radius: 999px; color: var(--brand); background: rgba(255,255,255,.66); border: 1px solid rgba(91,108,255,.16); font-weight: 800; font-size: 14px; }
.hero-copy h1 span { display: block; color: transparent; background: var(--gradient); -webkit-background-clip: text; background-clip: text; }
.hero-copy .subtitle { font-size: clamp(23px,3vw,36px); color: var(--deep); font-weight: 800; margin-bottom: 20px; }
.hero-copy p { max-width: 680px; color: var(--muted); font-size: 17px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 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,.7); border: 1px solid rgba(91,108,255,.16); color: var(--deep); font-size: 14px; }
.hero-visual { position: relative; padding: 18px; }
.hero-visual::before { content:""; position:absolute; inset: 8% 0 0 8%; border-radius: 36px; background: var(--gradient); opacity: .18; transform: rotate(4deg); }
.hero-visual img { position: relative; width: 100%; max-height: 560px; object-fit: contain; filter: drop-shadow(0 30px 40px rgba(25,43,91,.18)); }
.highlight-strip { margin-top: -1px; background: #fff; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.highlight-grid { display: grid; grid-template-columns: repeat(4,1fr); }
.highlight-item { padding: 26px 24px; border-right: 1px solid var(--border); }
.highlight-item:last-child { border-right: 0; }
.highlight-item strong { display:block; color: var(--title); margin-bottom: 4px; }
.highlight-item p { margin:0; color:var(--muted); font-size:14px; line-height:1.6; }
.pill-nav { display: grid; grid-template-columns: repeat(5,minmax(0,1fr)); gap: 12px; }
.pill-link { padding: 16px; background: rgba(255,255,255,.86); border: 1px solid var(--border); border-radius: 18px; text-decoration: none; transition: .2s ease; }
.pill-link:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(25,43,91,.1); }
.pill-link strong { display:block; color:var(--title); }
.pill-link span { color:var(--muted); font-size:13px; line-height:1.55; }
.split { display:grid; grid-template-columns: 1fr 1fr; align-items:center; gap: 52px; }
.split.reverse .media { order: 2; }
.media { position:relative; }
.media img { width:100%; max-height:520px; object-fit:contain; border-radius: 28px; background: linear-gradient(135deg,#EFF8FF,#FFF4D6); box-shadow: var(--shadow); }
.content p { color:var(--muted); }
.check-list { list-style:none; padding:0; margin:22px 0; display:grid; gap:10px; }
.check-list li { position:relative; padding-left:30px; color:var(--text); }
.check-list li::before { content:"✓"; position:absolute; left:0; top:1px; width:21px; height:21px; display:grid; place-items:center; border-radius:50%; color:#fff; background:var(--gradient); font-size:12px; }
.card-grid { display:grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap:22px; }
.card-grid.two { grid-template-columns: repeat(2,minmax(0,1fr)); }
.card-grid.four { grid-template-columns: repeat(4,minmax(0,1fr)); }
.card,.zone-card,.info-card,.review-card { background:#fff; border:1px solid var(--border); box-shadow:var(--shadow); border-radius:var(--radius); }
.card,.info-card,.review-card { padding:26px; }
.zone-card { overflow:hidden; }
.zone-card img { width:100%; height:260px; object-fit:contain; background:linear-gradient(135deg,#EFF8FF,#FFF7FC); padding:18px; }
.zone-card .zone-body { padding:26px; }
.zone-card p,.card p,.info-card p,.review-card p { color:var(--muted); }
.zone-card .meta,.card .meta { display:flex; flex-wrap:wrap; gap:8px; margin-bottom:14px; }
.tag { display:inline-flex; padding:5px 10px; border-radius:999px; background:#FFF4D6; color:#8A6810; font-size:12px; font-weight:800; }
.dark-zone { background: #11182F; color:#EEF2FF; position:relative; overflow:hidden; }
.dark-zone::before { content:""; position:absolute; width:460px; height:460px; border-radius:50%; right:-180px; top:-220px; background:rgba(0,212,255,.12); }
.dark-zone h2,.dark-zone h3 { color:#fff; }
.dark-zone p { color:#C6CDE2; }
.dark-zone .card { background:rgba(255,255,255,.06); border-color:rgba(255,255,255,.12); box-shadow:none; }
.dark-zone .card p { color:#C6CDE2; }
.security-grid { display:grid; grid-template-columns: .9fr 1.1fr; gap:28px; align-items:stretch; }
.security-media { display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.security-media img { width:100%; height:100%; min-height:280px; object-fit:contain; background:#fff; border-radius:22px; padding:18px; }
.security-copy { padding:34px; border-radius:28px; background:#fff; border:1px solid var(--border); box-shadow:var(--shadow); }
.review-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:20px; }
.review-card { position:relative; }
.review-card::before { content:"“"; position:absolute; right:20px; top:10px; color:rgba(91,108,255,.18); font-size:72px; line-height:1; font-family:Georgia,serif; }
.review-card strong { color:var(--title); }
.faq-list { display:grid; gap:14px; }
details { background:#fff; border:1px solid var(--border); border-radius:18px; padding:0 22px; box-shadow:0 10px 28px rgba(25,43,91,.08); }
summary { list-style:none; cursor:pointer; padding:20px 36px 20px 0; font-weight:800; color:var(--title); position:relative; }
summary::-webkit-details-marker { display:none; }
summary::after { content:"+"; position:absolute; right:0; top:18px; color:var(--brand); font-size:24px; }
details[open] summary::after { content:"−"; }
details p { color:var(--muted); padding-bottom:20px; margin:0; }
.notice { padding:28px; border-radius:24px; background:linear-gradient(135deg,#FFF4D6,#EAF7FF); border:1px solid rgba(255,200,87,.4); }
.notice h2,.notice h3 { margin-bottom:10px; }
.cta-band { padding:46px; display:flex; align-items:center; justify-content:space-between; gap:28px; border-radius:30px; color:#fff; background:var(--gradient); box-shadow:0 24px 50px rgba(91,108,255,.24); }
.cta-band h2 { color:#fff; margin-bottom:8px; }
.cta-band p { color:rgba(255,255,255,.86); margin:0; max-width:740px; }
.cta-band .secondary-btn { color:#fff; border-color:rgba(255,255,255,.42); background:rgba(255,255,255,.12); }
.subhero { padding:72px 0 48px; background:radial-gradient(circle at 82% 18%,rgba(0,212,255,.16),transparent 28%),linear-gradient(135deg,#F3EEFF,#EAF7FF); }
.subhero-grid { display:grid; grid-template-columns:1.05fr .95fr; gap:44px; align-items:center; }
.subhero h1 { font-size:clamp(38px,6vw,64px); }
.subhero img { width:100%; max-height:430px; object-fit:contain; filter:drop-shadow(0 24px 36px rgba(25,43,91,.18)); }
.breadcrumb { display:flex; flex-wrap:wrap; gap:8px; color:var(--muted); font-size:14px; margin-bottom:16px; }
.breadcrumb a { color:var(--brand); text-decoration:none; }
.feature-list { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:18px; }
.feature-list .info-card { box-shadow:0 12px 30px rgba(25,43,91,.09); }
.steps { counter-reset:step; display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:18px; }
.step { counter-increment:step; padding:24px; background:#fff; border-radius:20px; border:1px solid var(--border); }
.step::before { content:counter(step,decimal-leading-zero); display:inline-flex; margin-bottom:12px; color:var(--brand); font-size:25px; font-weight:900; }
.quote-row { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:18px; }
.quote { padding:24px; border-left:4px solid var(--brand); border-radius:0 20px 20px 0; background:#fff; box-shadow:0 12px 30px rgba(25,43,91,.08); color:var(--muted); }
.site-footer { background:#0B1024; color:#EEF2FF; padding:68px 0 26px; }
.footer-inner { width:min(calc(100% - 32px),var(--max)); margin:0 auto; display:grid; grid-template-columns:1.1fr 1.9fr; gap:56px; }
.footer-brand p { color:#AEB7D0; max-width:430px; margin-top:18px; }
.footer-links { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:24px; }
.footer-links h2 { color:#fff; font-size:16px; margin-bottom:14px; }
.footer-links a { display:block; text-decoration:none; color:#AEB7D0; padding:4px 0; font-size:14px; }
.footer-links a:hover { color:#fff; }
.footer-bottom { width:min(calc(100% - 32px),var(--max)); margin:42px auto 0; padding-top:24px; border-top:1px solid rgba(255,255,255,.09); color:#8F99B5; font-size:13px; }
.footer-bottom p { margin-bottom:5px; }
.mobile-bottom-nav { display:none; }
@media (max-width:1080px) {
  .nav-core { gap:2px; }
  .nav-core a { padding:8px 8px; font-size:14px; }
  .pill-nav { grid-template-columns:repeat(3,1fr); }
  .card-grid.four { grid-template-columns:repeat(2,1fr); }
}
@media (max-width:900px) {
  .header-inner { min-height:64px; }
  .nav-core,.desktop-menu-toggle { display:none; }
  .mobile-menu-toggle { display:inline-grid; }
  .site-logo { position:absolute; left:50%; transform:translateX(-50%); }
  .site-logo strong { display:none; }
  .header-actions { margin-left:auto; }
  .hero-grid,.subhero-grid,.split,.security-grid,.footer-inner { grid-template-columns:1fr; }
  .hero { padding-top:52px; }
  .hero-copy { text-align:center; }
  .hero-copy p { margin-inline:auto; }
  .hero-actions,.hero-points { justify-content:center; }
  .hero-visual { max-width:720px; margin-inline:auto; }
  .highlight-grid { grid-template-columns:repeat(2,1fr); }
  .highlight-item:nth-child(2) { border-right:0; }
  .highlight-item:nth-child(-n+2) { border-bottom:1px solid var(--border); }
  .split.reverse .media { order:0; }
  .card-grid,.review-grid,.feature-list,.steps { grid-template-columns:repeat(2,1fr); }
  .footer-brand .site-logo { position:static; transform:none; }
  .footer-brand .site-logo strong { display:inline; }
}
@media (max-width:640px) {
  body { padding-bottom:72px; }
  .header-inner { width:min(calc(100% - 20px),var(--max)); gap:8px; }
  .main-btn.compact { padding:7px 12px; font-size:12px; min-height:36px; }
  .menu-toggle { width:38px; height:38px; }
  .site-logo img { width:38px; height:38px; }
  .section { padding:64px 0; }
  .section-tight { padding:38px 0; }
  .container { width:min(calc(100% - 24px),var(--max)); }
  h1 { font-size:42px; }
  .hero-copy .subtitle { font-size:24px; }
  .hero-copy p { font-size:15px; }
  .highlight-grid,.pill-nav,.card-grid,.card-grid.two,.card-grid.four,.review-grid,.feature-list,.steps,.quote-row,.footer-links { grid-template-columns:1fr; }
  .highlight-item { border-right:0; border-bottom:1px solid var(--border); }
  .highlight-item:last-child { border-bottom:0; }
  .security-media { grid-template-columns:1fr; }
  .security-media img { min-height:220px; }
  .cta-band { padding:30px 24px; align-items:flex-start; flex-direction:column; }
  .zone-card img { height:220px; }
  .drawer-nav { grid-template-columns:1fr; }
  .site-drawer { padding:18px; }
  .mobile-bottom-nav { position:fixed; display:grid; grid-template-columns:repeat(4,1fr); left:10px; right:10px; bottom:calc(8px + env(safe-area-inset-bottom)); z-index:9980; background:rgba(11,16,36,.96); border:1px solid rgba(255,255,255,.1); border-radius:18px; box-shadow:0 16px 36px rgba(5,10,30,.3); backdrop-filter:blur(12px); overflow:hidden; }
  .mobile-bottom-nav a { display:grid; justify-items:center; gap:1px; padding:8px 4px; color:#E8ECFF; text-decoration:none; font-size:11px; }
  .mobile-bottom-nav span { color:#00D4FF; font-size:16px; line-height:1; }
}
@media (max-width: 900px) {
  .drawer-head .site-logo { position: static; left: auto; transform: none; }
  .drawer-head .site-logo strong { display: inline; }
}