:root {
  --bg: #F5F7FF; --ink: #1F2740; --muted: #66708A; --soft: #9AA4BA;
  --title: #131A35; --brand: #5B6CFF; --violet: #7A5CFF; --cyan: #00D4FF;
  --navy: #16213E; --gold: #FFC857; --rose: #D94F70; --card: #FFFFFF;
  --deep: #11182F; --line: rgba(91,108,255,.18); --shadow: 0 20px 46px rgba(25,43,91,.14);
  --gradient: linear-gradient(135deg,#5B6CFF 0%,#7A5CFF 48%,#00D4FF 100%);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; background: var(--bg); color: var(--ink); font-family: "Microsoft YaHei","PingFang SC","Noto Sans CJK SC",Arial,sans-serif; line-height: 1.75; overflow-x: hidden; }
body.drawer-open { overflow: hidden; }
a { color: var(--brand); text-decoration: none; }
a:hover { color: var(--violet); }
img { max-width: 100%; height: auto; display: block; }
button, a { -webkit-tap-highlight-color: transparent; }
.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: 18px; }
.site-logo { display: inline-flex; align-items: center; gap: 10px; color: #fff; flex: 0 0 auto; }
.site-logo img { width: 44px; height: 44px; object-fit: contain; }
.site-logo strong { font-size: 18px; white-space: nowrap; letter-spacing: .5px; }
.nav-core { display: flex; align-items: center; justify-content: center; gap: 8px; min-width: 0; }
.nav-core a { color: #EEF2FF; border-radius: 999px; padding: 8px 12px; white-space: nowrap; font-size: 14px; }
.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; flex: 0 0 auto; }
.main-btn, .ghost-btn { display: inline-flex; justify-content: center; align-items: center; min-height: 46px; padding: 10px 22px; border-radius: 999px; font-weight: 700; transition: transform .2s ease, box-shadow .2s ease; }
.main-btn { background: var(--gradient); color: #fff; box-shadow: 0 14px 32px rgba(91,108,255,.22); }
.main-btn:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 18px 36px rgba(91,108,255,.28); }
.ghost-btn { color: var(--brand); border: 1px solid var(--line); background: rgba(255,255,255,.78); }
.menu-button { width: 44px; height: 44px; border: 0; border-radius: 50%; background: rgba(255,255,255,.1); display: inline-flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; cursor: pointer; }
.menu-button span { width: 19px; height: 2px; border-radius: 2px; background: #fff; }
.mobile-menu { display: none; }
.site-drawer { position: fixed; top: 0; right: 0; z-index: 10002; width: min(390px, 88vw); height: 100vh; background: #fff; transform: translateX(105%); transition: transform .28s ease; box-shadow: -24px 0 60px rgba(10,16,36,.26); overflow-y: auto; }
.site-drawer.open { transform: translateX(0); }
.drawer-overlay { position: fixed; inset: 0; z-index: 10001; background: rgba(8,12,28,.54); opacity: 0; visibility: hidden; transition: .25s ease; }
.drawer-overlay.open { opacity: 1; visibility: visible; }
.drawer-head { position: sticky; top: 0; background: #fff; display: flex; align-items: center; justify-content: space-between; padding: 20px 22px; border-bottom: 1px solid var(--line); font-weight: 800; color: var(--title); }
.drawer-close { width: 40px; height: 40px; border-radius: 50%; border: 0; background: #EFF3FF; color: var(--title); font-size: 28px; line-height: 1; cursor: pointer; }
.drawer-nav { padding: 12px 14px; }
.drawer-nav a { display: flex; align-items: center; justify-content: space-between; padding: 13px 14px; color: var(--ink); border-radius: 14px; }
.drawer-nav a:hover, .drawer-nav a.active { background: #EFF3FF; color: var(--brand); }
.drawer-note { margin: 10px 20px 28px; padding: 16px; border-radius: 16px; background: #FFF8E8; color: #6B5B35; font-size: 13px; }
main { min-height: 60vh; }
.container { width: min(1200px, calc(100% - 40px)); margin: 0 auto; }
.hero { position: relative; padding: 86px 0 72px; overflow: hidden; background: radial-gradient(circle at 13% 16%, rgba(122,92,255,.18), transparent 35%), radial-gradient(circle at 86% 22%, rgba(0,212,255,.18), transparent 34%), linear-gradient(135deg,#F7F2FF 0%,#EFF8FF 54%,#FFF6FC 100%); }
.hero::before,.hero::after { content:""; position:absolute; border-radius:50%; filter: blur(2px); pointer-events:none; }
.hero::before { width: 220px; height: 220px; background: rgba(255,200,87,.16); left: -70px; bottom: -80px; }
.hero::after { width: 170px; height: 170px; background: rgba(217,79,112,.12); right: 7%; top: 18%; }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.02fr .98fr; gap: 54px; align-items: center; }
.eyebrow,.section-kicker { display: inline-flex; align-items: center; gap: 8px; color: var(--brand); font-weight: 800; font-size: 13px; letter-spacing: .12em; text-transform: uppercase; }
.eyebrow::before,.section-kicker::before { content:""; width: 30px; height: 3px; border-radius: 3px; background: linear-gradient(90deg,var(--gold),var(--cyan)); }
h1,h2,h3,.section-title { color: var(--title); line-height: 1.25; margin-top: 0; }
.hero h1 { font-size: clamp(44px,6vw,78px); margin: 16px 0 10px; letter-spacing: -.04em; }
.hero-subtitle { font-size: clamp(22px,3vw,36px); color: var(--navy); font-weight: 800; margin: 0 0 18px; }
.hero-copy { color: var(--muted); font-size: 17px; max-width: 690px; }
.hero-actions { display:flex; flex-wrap:wrap; gap:12px; margin:28px 0 24px; }
.hero-points { display:flex; flex-wrap:wrap; gap:10px; padding:0; margin:0; list-style:none; }
.hero-points li { padding:8px 13px; border-radius:999px; background:rgba(255,255,255,.84); border:1px solid var(--line); color:var(--navy); font-size:13px; box-shadow:0 8px 22px rgba(25,43,91,.07); }
.hero-visual { position: relative; padding: 24px; }
.hero-visual::before { content:""; position:absolute; inset: 7% 0 0 10%; border-radius: 42px; background: linear-gradient(145deg,rgba(91,108,255,.18),rgba(0,212,255,.12)); transform: rotate(5deg); }
.hero-visual img { position:relative; width:100%; max-height:580px; object-fit:contain; filter:drop-shadow(0 30px 40px rgba(25,43,91,.22)); }
.section { padding: 82px 0; }
.section.compact { padding: 54px 0; }
.section-head { display:flex; justify-content:space-between; align-items:end; gap:24px; margin-bottom:30px; }
.section-head > div { max-width: 760px; }
.section-title { font-size: clamp(30px,4vw,46px); margin: 10px 0 12px; letter-spacing:-.025em; }
.section-desc { margin:0; color:var(--muted); }
.card,.zone-card,.info-card,.review-card,.feature-card { background:#fff; border:1px solid var(--line); box-shadow:var(--shadow); border-radius:22px; }
.highlights { margin-top:-30px; position:relative; z-index:4; }
.highlight-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:16px; }
.feature-card { padding:22px; box-shadow:0 14px 32px rgba(25,43,91,.1); }
.feature-card .icon { width:44px; height:44px; display:grid; place-items:center; border-radius:14px; background:linear-gradient(135deg,#EEF0FF,#EAFBFF); color:var(--brand); font-weight:900; margin-bottom:14px; }
.feature-card h3 { margin:0 0 8px; font-size:18px; }
.feature-card p { margin:0; color:var(--muted); font-size:14px; }
.pill-cloud { display:flex; flex-wrap:wrap; gap:12px; }
.channel-pill { flex:1 1 210px; min-height:92px; padding:16px 18px; border-radius:20px; background:#fff; border:1px solid var(--line); }
.channel-pill strong { display:block; color:var(--title); margin-bottom:4px; }
.channel-pill span { display:block; color:var(--muted); font-size:13px; margin-bottom:7px; }
.channel-pill a { font-size:13px; font-weight:700; }
.split { display:grid; grid-template-columns:1fr 1fr; gap:28px; align-items:center; }
.split.reverse .media { order:2; }
.media img,.zone-card img,.app-section img,.content-img { width:100%; height:auto; object-fit:contain; border-radius:22px; }
.media { position:relative; }
.media::after { content:""; position:absolute; inset:auto 8% -5% 8%; height:24%; background:rgba(91,108,255,.16); filter:blur(30px); z-index:-1; }
.copy h2 { font-size:clamp(30px,4vw,44px); margin:10px 0 16px; }
.copy p { color:var(--muted); }
.check-list { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:10px 18px; list-style:none; padding:0; margin:20px 0; }
.check-list li { position:relative; padding-left:24px; color:var(--ink); }
.check-list li::before { content:"✓"; position:absolute; left:0; color:var(--brand); font-weight:900; }
.dual-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:24px; }
.zone-card { overflow:hidden; }
.zone-card .zone-media { aspect-ratio:16/9; background:#EEF3FF; display:flex; align-items:center; justify-content:center; }
.zone-card .zone-media img { width:100%; height:100%; object-fit:contain; }
.zone-body { padding:24px; }
.zone-body h3 { font-size:25px; margin:0 0 10px; }
.zone-body p { color:var(--muted); }
.mini-points { display:grid; gap:9px; margin:16px 0; }
.mini-points span { padding:9px 12px; border-radius:12px; background:#F4F6FF; color:var(--navy); font-size:14px; }
.triple-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
.info-card { padding:20px; overflow:hidden; }
.info-card img { width:100%; aspect-ratio:16/10; object-fit:contain; border-radius:16px; background:#F0F4FF; }
.info-card h3 { margin:18px 0 8px; font-size:22px; }
.info-card p { color:var(--muted); }
.security-panel { display:grid; grid-template-columns:1fr 1fr; gap:0; overflow:hidden; border-radius:30px; background:linear-gradient(145deg,#11182F,#18254D); color:#EAF0FF; box-shadow:var(--shadow); }
.security-panel .security-copy { padding:42px; }
.security-panel h2 { color:#fff; font-size:clamp(30px,4vw,44px); }
.security-panel p { color:#C6D0EA; }
.security-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:12px; margin-top:20px; }
.security-item { padding:14px; border-radius:14px; background:rgba(255,255,255,.08); border:1px solid rgba(255,255,255,.1); }
.security-visual { display:grid; grid-template-columns:1fr 1fr; align-items:center; padding:24px; background:linear-gradient(135deg,rgba(91,108,255,.18),rgba(0,212,255,.1)); }
.security-visual img { width:100%; max-height:360px; object-fit:contain; }
.review-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }
.review-card { padding:22px; }
.review-card .stars { color:var(--gold); letter-spacing:2px; }
.review-card p { color:var(--muted); }
.review-card strong { color:var(--title); }
.faq-list { display:grid; gap:14px; }
details { background:#fff; border:1px solid var(--line); border-radius:18px; padding:0 20px; box-shadow:0 12px 26px rgba(25,43,91,.07); }
summary { cursor:pointer; font-weight:800; color:var(--title); padding:18px 0; list-style:none; }
summary::-webkit-details-marker { display:none; }
details p { margin:0; padding:0 0 20px; color:var(--muted); }
.notice { padding:28px; border-radius:24px; background:linear-gradient(135deg,#FFF7DF,#EEF8FF); border:1px solid rgba(255,200,87,.35); }
.notice h2 { margin-bottom:8px; }
.notice p { margin:0; color:#655D52; }
.inner-hero { padding:70px 0 54px; background:radial-gradient(circle at 12% 20%,rgba(122,92,255,.18),transparent 34%),radial-gradient(circle at 88% 18%,rgba(0,212,255,.16),transparent 30%),linear-gradient(135deg,#F9F4FF,#ECF8FF); }
.inner-hero-grid { display:grid; grid-template-columns:1.05fr .95fr; align-items:center; gap:44px; }
.inner-hero h1 { font-size:clamp(38px,5vw,62px); margin:12px 0 16px; }
.inner-hero p { color:var(--muted); font-size:17px; }
.inner-hero img { width:100%; max-height:430px; object-fit:contain; filter:drop-shadow(0 24px 36px rgba(25,43,91,.18)); }
.article-grid { display:grid; grid-template-columns:minmax(0,1.6fr) minmax(280px,.75fr); gap:28px; align-items:start; }
.article-card { background:#fff; border:1px solid var(--line); border-radius:24px; padding:32px; box-shadow:var(--shadow); }
.article-card h2 { font-size:30px; margin-top:30px; }
.article-card h2:first-child { margin-top:0; }
.article-card p { color:var(--muted); }
.side-stack { display:grid; gap:18px; position:sticky; top:96px; }
.side-card { padding:22px; border-radius:20px; background:#fff; border:1px solid var(--line); box-shadow:0 12px 28px rgba(25,43,91,.09); }
.side-card h3 { margin-bottom:10px; }
.side-card ul { margin:0; padding-left:18px; color:var(--muted); }
.quote-card { padding:22px; border-radius:18px; background:#F2F5FF; border-left:4px solid var(--brand); color:var(--navy); margin:24px 0; }
.faq-page .faq-item { background:#fff; border:1px solid var(--line); border-radius:20px; padding:24px; box-shadow:0 12px 28px rgba(25,43,91,.08); }
.faq-page .faq-item h2 { font-size:22px; margin:0 0 10px; }
.faq-page .faq-item p { margin:0; color:var(--muted); }
.site-footer { background:#0B1024; color:#EEF2FF; padding-top:58px; }
.footer-inner { width:min(1200px,calc(100% - 40px)); margin:0 auto; display:grid; grid-template-columns:1.1fr 2fr; gap:54px; }
.footer-brand p { color:#AAB6D2; max-width:420px; }
.footer-logo { margin-bottom:18px; }
.footer-links { display:grid; grid-template-columns:repeat(4,1fr); gap:22px; }
.footer-links h3 { color:#fff; font-size:15px; margin-bottom:14px; }
.footer-links a { display:block; color:#AAB6D2; margin:8px 0; font-size:14px; }
.footer-links a:hover { color:#fff; }
.footer-bottom { margin-top:40px; border-top:1px solid rgba(255,255,255,.08); padding:20px; text-align:center; color:#8F9AB5; font-size:13px; }
.mobile-bottom-nav { display:none; }
@media (max-width: 1024px) {
  .nav-core { display:none; }
  .mobile-menu { display:inline-flex; order:-1; }
  .desktop-menu { display:none; }
  .site-logo { flex:1; justify-content:center; }
  .header-actions { flex:1; justify-content:flex-end; }
  .header-inner > .mobile-menu { flex:1; justify-content:center; max-width:44px; }
  .hero-grid,.inner-hero-grid,.split,.security-panel,.article-grid { grid-template-columns:1fr; }
  .split.reverse .media { order:0; }
  .highlight-grid { grid-template-columns:repeat(2,1fr); }
  .triple-grid,.review-grid { grid-template-columns:repeat(2,1fr); }
  .side-stack { position:static; grid-template-columns:repeat(2,1fr); }
  .security-visual { min-height:320px; }
  .footer-inner { grid-template-columns:1fr; }
}
@media (max-width: 720px) {
  body { padding-bottom:74px; }
  .header-inner { min-height:64px; padding:0 12px; gap:8px; }
  .site-logo img { width:38px; height:38px; }
  .site-logo strong { display:none; }
  .header-cta { min-height:40px; padding:8px 14px; font-size:13px; }
  .menu-button { width:40px; height:40px; }
  .container { width:min(100% - 28px,1200px); }
  .hero { padding:54px 0 46px; }
  .hero-grid { gap:24px; }
  .hero h1 { font-size:45px; }
  .hero-subtitle { font-size:24px; }
  .hero-copy { font-size:15px; }
  .hero-visual { padding:4px; }
  .hero-visual img { max-height:390px; }
  .highlights { margin-top:0; padding-top:18px; }
  .highlight-grid,.dual-grid,.triple-grid,.review-grid,.security-grid,.side-stack { grid-template-columns:1fr; }
  .section { padding:58px 0; }
  .section.compact { padding:40px 0; }
  .section-head { display:block; }
  .check-list { grid-template-columns:1fr; }
  .security-panel .security-copy { padding:28px 22px; }
  .security-visual { grid-template-columns:1fr 1fr; min-height:240px; }
  .inner-hero { padding:48px 0 38px; }
  .inner-hero-grid { gap:22px; }
  .inner-hero h1 { font-size:38px; }
  .article-card { padding:24px 20px; }
  .footer-inner { width:min(100% - 28px,1200px); gap:34px; }
  .footer-links { grid-template-columns:repeat(2,1fr); }
  .mobile-bottom-nav { position:fixed; left:10px; right:10px; bottom:10px; z-index:9998; display:grid; grid-template-columns:repeat(4,1fr); min-height:58px; padding:7px; border-radius:20px; background:rgba(11,16,36,.95); backdrop-filter:blur(12px); box-shadow:0 14px 34px rgba(7,12,28,.28); }
  .mobile-bottom-nav a { display:flex; flex-direction:column; align-items:center; justify-content:center; gap:2px; color:#B8C3DE; font-size:11px; border-radius:14px; }
  .mobile-bottom-nav a span { font-size:18px; line-height:1; }
  .mobile-bottom-nav a.active { color:#fff; background:rgba(91,108,255,.38); }
}
@media (max-width:420px) {
  .header-cta { padding:8px 11px; }
  .hero-actions .main-btn,.hero-actions .ghost-btn { width:100%; }
  .footer-links { grid-template-columns:1fr 1fr; gap:16px; }
}