:root {
  --bg: #F5F7FF;
  --ink: #1F2740;
  --muted: #66708A;
  --soft: #9AA4BA;
  --title: #131A35;
  --primary: #5B6CFF;
  --primary-2: #7A5CFF;
  --cyan: #00D4FF;
  --gold: #FFC857;
  --rose: #D94F70;
  --navy: #16213E;
  --deep: #0B1024;
  --card: #FFFFFF;
  --line: rgba(91,108,255,.18);
  --shadow: 0 20px 46px rgba(25,43,91,.14);
  --radius: 24px;
  --gradient: linear-gradient(135deg, #5B6CFF 0%, #7A5CFF 48%, #00D4FF 100%);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.75;
  overflow-x: hidden;
}
body.drawer-open { overflow: hidden; }
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-2); }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea { font: inherit; }
.container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.narrow { width: min(860px, calc(100% - 40px)); margin: 0 auto; }
.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 { width: min(1280px, calc(100% - 32px)); min-height: 72px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 22px; }
.site-logo { display: inline-flex; align-items: center; gap: 10px; color: #fff; flex: 0 0 auto; }
.site-logo:hover { color: #fff; }
.site-logo img { max-height: 44px; width: auto; object-fit: contain; }
.site-logo strong { font-size: 21px; letter-spacing: .08em; }
.nav-core { display: flex; align-items: center; justify-content: center; gap: 8px; margin-left: auto; }
.nav-core a { color: #EEF2FF; border-radius: 999px; padding: 8px 12px; font-size: 15px; 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; min-height: 48px; padding: 0 24px; border: 0; border-radius: 999px; background: var(--gradient); color: #fff; font-weight: 700; box-shadow: 0 14px 32px rgba(91,108,255,.22); transition: transform .2s ease, box-shadow .2s ease; }
.main-btn:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 18px 40px rgba(91,108,255,.30); }
.compact-btn { min-height: 42px; padding: 0 19px; font-size: 14px; white-space: nowrap; }
.secondary-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 24px; border-radius: 999px; border: 1px solid var(--line); background: rgba(255,255,255,.74); color: var(--title); font-weight: 700; }
.menu-toggle { width: 42px; height: 42px; border: 1px solid rgba(255,255,255,.2); border-radius: 50%; background: rgba(255,255,255,.08); display: inline-flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; cursor: pointer; }
.menu-toggle span { width: 17px; height: 2px; background: #fff; border-radius: 99px; }
.mobile-only { display: none; }
.drawer-overlay { position: fixed; inset: 0; z-index: 10000; background: rgba(7,12,30,.58); opacity: 0; transition: opacity .25s ease; }
.drawer-overlay.is-visible { opacity: 1; }
.site-drawer { position: fixed; top: 0; right: 0; z-index: 10001; width: min(390px, 90vw); height: 100dvh; padding: 24px; background: #fff; box-shadow: -20px 0 60px rgba(11,16,36,.25); transform: translateX(105%); transition: transform .3s ease; overflow-y: auto; }
.site-drawer.is-open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.drawer-brand { display: inline-flex; align-items: center; gap: 9px; color: var(--title); font-weight: 800; font-size: 20px; }
.drawer-brand img { max-height: 40px; width: auto; }
.drawer-close { width: 42px; height: 42px; border: 0; border-radius: 50%; background: #EFF2FF; color: var(--title); font-size: 28px; line-height: 1; cursor: pointer; }
.drawer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.drawer-nav a { padding: 12px 14px; border-radius: 14px; background: #F6F8FF; color: var(--ink); font-weight: 600; }
.drawer-nav a:hover { background: #EEF0FF; color: var(--primary); }
.drawer-note { margin-top: 22px; padding: 18px; border-radius: 18px; background: linear-gradient(145deg, #EFF8FF, #F4F0FF); }
.drawer-note strong { color: var(--title); }
.drawer-note p { margin: 8px 0 0; color: var(--muted); font-size: 14px; }
.hero { position: relative; overflow: hidden; padding: 82px 0 64px; background: radial-gradient(circle at 12% 18%, rgba(122,92,255,.22), transparent 30%), radial-gradient(circle at 88% 18%, rgba(0,212,255,.18), transparent 28%), linear-gradient(160deg, #F9F6FF 0%, #EAF7FF 50%, #FFF7FB 100%); }
.hero::after { content: ""; position: absolute; width: 340px; height: 340px; border-radius: 50%; right: -120px; bottom: -170px; background: rgba(255,200,87,.18); filter: blur(2px); }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.04fr .96fr; align-items: center; gap: 56px; }
.hero-copy h1 { margin: 12px 0 16px; color: var(--title); font-size: clamp(46px, 7vw, 82px); line-height: 1.05; letter-spacing: -.04em; }
.hero-copy h2 { margin: 0 0 18px; color: var(--navy); font-size: clamp(24px, 3.2vw, 42px); line-height: 1.25; }
.hero-copy p { margin: 0; color: var(--muted); font-size: 17px; }
.eyebrow, .section-kicker { display: inline-flex; align-items: center; gap: 8px; color: var(--primary); font-weight: 800; letter-spacing: .08em; font-size: 13px; text-transform: uppercase; }
.eyebrow::before, .section-kicker::before { content: ""; width: 26px; height: 3px; border-radius: 99px; background: var(--gradient); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.hero-points { display: flex; flex-wrap: wrap; gap: 10px; margin: 24px 0 0; padding: 0; list-style: none; }
.hero-points li { padding: 8px 13px; border-radius: 999px; background: rgba(255,255,255,.75); border: 1px solid rgba(91,108,255,.13); color: var(--navy); font-size: 14px; }
.hero-visual { position: relative; }
.hero-visual img { width: 100%; max-height: 560px; object-fit: contain; filter: drop-shadow(0 26px 40px rgba(31,39,64,.18)); }
.hero-float { position: absolute; padding: 13px 16px; border-radius: 16px; background: rgba(255,255,255,.88); box-shadow: var(--shadow); backdrop-filter: blur(10px); font-size: 13px; color: var(--title); }
.float-one { left: -22px; bottom: 18%; }
.float-two { right: 2%; top: 12%; }
.highlight-strip { margin-top: -18px; position: relative; z-index: 4; }
.highlight-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 14px; padding: 18px; border-radius: 26px; background: rgba(255,255,255,.9); border: 1px solid rgba(91,108,255,.13); box-shadow: var(--shadow); backdrop-filter: blur(12px); }
.highlight-item { padding: 13px 16px; border-right: 1px solid #E8ECF8; }
.highlight-item:last-child { border-right: 0; }
.highlight-item strong { display: block; color: var(--title); margin-bottom: 3px; }
.highlight-item span { display: block; color: var(--muted); font-size: 13px; line-height: 1.55; }
.section { padding: 84px 0; }
.section-sm { padding: 54px 0; }
.section-white { background: #fff; }
.section-tint { background: linear-gradient(180deg, #EFF8FF 0%, #F8F7FF 100%); }
.section-dark { background: #11182F; color: #EEF2FF; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 32px; }
.section-head h2, .section-title { margin: 8px 0 0; color: var(--title); font-size: clamp(30px, 4vw, 46px); line-height: 1.18; }
.section-head p { max-width: 620px; margin: 0; color: var(--muted); }
.section-dark .section-head h2, .section-dark .section-title { color: #fff; }
.section-dark .section-head p { color: #B9C2DA; }
.channel-pills { display: flex; flex-wrap: wrap; gap: 11px; }
.channel-pill { flex: 1 1 190px; min-height: 96px; padding: 16px 18px; border-radius: 18px; background: #fff; border: 1px solid var(--line); transition: transform .2s ease, box-shadow .2s ease; }
.channel-pill:hover { transform: translateY(-3px); box-shadow: 0 14px 28px rgba(25,43,91,.10); }
.channel-pill strong { display: block; color: var(--title); margin-bottom: 4px; }
.channel-pill span { color: var(--muted); font-size: 13px; line-height: 1.55; }
.split-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: center; }
.media-card, .card, .zone-card, .info-card, .review-card, .faq-card { background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow); border-radius: var(--radius); overflow: hidden; }
.media-card img, .zone-card img, .app-section img, .content-img { width: 100%; height: auto; object-fit: contain; }
.media-card-body, .card-body { padding: 28px; }
.media-card h3, .card h3 { margin: 0 0 12px; color: var(--title); font-size: 25px; }
.media-card p, .card p { color: var(--muted); }
.text-link { display: inline-flex; align-items: center; gap: 7px; color: var(--primary); font-weight: 700; }
.text-link::after { content: "→"; transition: transform .2s ease; }
.text-link:hover::after { transform: translateX(4px); }
.content-grid-2 { display: grid; grid-template-columns: repeat(2,1fr); gap: 24px; }
.content-grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; }
.content-grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 18px; }
.feature-card { padding: 24px; border-radius: 20px; background: #fff; border: 1px solid var(--line); }
.feature-card .number { display: inline-flex; width: 38px; height: 38px; border-radius: 12px; align-items: center; justify-content: center; background: linear-gradient(135deg, #EEF0FF, #E7FAFF); color: var(--primary); font-weight: 900; }
.feature-card h3 { margin: 16px 0 8px; color: var(--title); font-size: 20px; }
.feature-card p { margin: 0; color: var(--muted); font-size: 14px; }
.list-clean { margin: 18px 0 0; padding: 0; list-style: none; }
.list-clean li { position: relative; padding-left: 24px; margin: 8px 0; color: var(--muted); }
.list-clean li::before { content: ""; position: absolute; left: 0; top: .72em; width: 9px; height: 9px; border-radius: 50%; background: var(--gradient); }
.safety-panel { display: grid; grid-template-columns: .85fr 1.15fr; gap: 32px; align-items: center; padding: 34px; border-radius: 30px; background: linear-gradient(140deg, #151D3A, #202A50); color: #EEF2FF; box-shadow: 0 24px 60px rgba(11,16,36,.24); }
.safety-panel h2 { margin: 8px 0 14px; color: #fff; font-size: clamp(30px,4vw,44px); }
.safety-panel p { color: #C4CCE1; }
.safety-panel img { max-height: 400px; margin: 0 auto; 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: .15em; }
.review-card p { margin: 14px 0 18px; color: var(--ink); }
.review-card small { color: var(--soft); }
.faq-list { display: grid; gap: 13px; }
details { border: 1px solid var(--line); background: #fff; border-radius: 16px; padding: 0 20px; }
summary { padding: 17px 34px 17px 0; cursor: pointer; color: var(--title); font-weight: 700; position: relative; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 2px; top: 12px; font-size: 25px; color: var(--primary); }
details[open] summary::after { content: "−"; }
details p { margin: 0; padding: 0 0 18px; color: var(--muted); }
.notice { padding: 24px 28px; border-radius: 22px; border: 1px solid rgba(255,200,87,.38); background: #FFF8E6; color: #735A1B; }
.notice strong { display: block; color: #5D4713; margin-bottom: 6px; }
.cta-band { display: grid; grid-template-columns: 1fr auto; gap: 28px; align-items: center; padding: 38px; border-radius: 30px; background: linear-gradient(135deg, #5B6CFF 0%, #7A5CFF 55%, #00BDD9 100%); color: #fff; box-shadow: 0 24px 54px rgba(91,108,255,.28); }
.cta-band h2 { margin: 0 0 8px; color: #fff; font-size: clamp(28px,3.5vw,42px); }
.cta-band p { margin: 0; color: rgba(255,255,255,.84); }
.cta-band .secondary-btn { background: #fff; color: var(--primary); border: 0; }
.page-hero { padding: 76px 0 54px; background: radial-gradient(circle at 15% 10%, rgba(122,92,255,.20), transparent 30%), radial-gradient(circle at 88% 20%, rgba(0,212,255,.16), transparent 26%), linear-gradient(160deg,#F9F7FF,#ECF8FF); }
.page-hero-grid { display: grid; grid-template-columns: 1.08fr .92fr; align-items: center; gap: 48px; }
.page-hero h1 { margin: 12px 0 16px; color: var(--title); font-size: clamp(38px,5.5vw,64px); line-height: 1.12; }
.page-hero p { margin: 0; color: var(--muted); font-size: 17px; }
.page-hero img { max-height: 430px; margin: 0 auto; object-fit: contain; filter: drop-shadow(0 22px 35px rgba(31,39,64,.16)); }
.article-section { padding: 72px 0; }
.article-layout { display: grid; grid-template-columns: minmax(0,1fr) 300px; gap: 34px; align-items: start; }
.article-main { display: grid; gap: 24px; }
.prose-card { padding: 30px; border-radius: 24px; background: #fff; border: 1px solid var(--line); box-shadow: 0 16px 40px rgba(25,43,91,.09); }
.prose-card h2 { margin: 0 0 14px; color: var(--title); font-size: 28px; }
.prose-card h3 { margin: 22px 0 8px; color: var(--title); font-size: 20px; }
.prose-card p { margin: 0 0 15px; color: var(--muted); }
.prose-card p:last-child { margin-bottom: 0; }
.side-card { position: sticky; top: 98px; padding: 24px; border-radius: 22px; background: #11182F; color: #fff; }
.side-card h2 { margin: 0 0 12px; color: #fff; font-size: 23px; }
.side-card p { color: #BCC5DD; font-size: 14px; }
.side-card a { display: block; margin-top: 10px; padding: 11px 13px; border-radius: 12px; background: rgba(255,255,255,.08); color: #EEF2FF; }
.side-card a:hover { background: rgba(0,212,255,.16); }
.steps { counter-reset: step; display: grid; gap: 14px; }
.step { position: relative; padding: 20px 20px 20px 68px; border-radius: 18px; background: #F7F8FF; }
.step::before { counter-increment: step; content: counter(step); position: absolute; left: 20px; top: 20px; width: 32px; height: 32px; display: grid; place-items: center; border-radius: 10px; background: var(--gradient); color: #fff; font-weight: 800; }
.step strong { display: block; color: var(--title); }
.step span { color: var(--muted); font-size: 14px; }
.quote-card { padding: 26px; border-radius: 22px; background: linear-gradient(140deg,#EFF8FF,#F5F1FF); border: 1px solid var(--line); }
.quote-card blockquote { margin: 0; color: var(--title); font-size: 18px; }
.quote-card cite { display: block; margin-top: 12px; color: var(--muted); font-style: normal; font-size: 14px; }
.service-table { width: 100%; border-collapse: collapse; overflow: hidden; border-radius: 16px; }
.service-table th, .service-table td { padding: 14px 16px; text-align: left; border-bottom: 1px solid #E9ECF7; vertical-align: top; }
.service-table th { background: #F2F4FF; color: var(--title); }
.service-table td { color: var(--muted); }
.site-footer { background: var(--deep); color: #EEF2FF; padding: 62px 0 22px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr repeat(3,1fr); gap: 36px; }
.footer-brand p { max-width: 420px; color: #AEB8D0; }
.footer-logo { margin-bottom: 16px; }
.site-footer h2 { color: #fff; font-size: 16px; margin: 0 0 14px; }
.site-footer a { display: block; color: #BCC5DD; margin: 8px 0; font-size: 14px; }
.site-footer a:hover { color: #fff; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-top: 42px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.10); }
.footer-bottom p { margin: 0; color: #8994B0; font-size: 13px; }
.footer-bottom div { display: flex; gap: 16px; }
.footer-bottom a { display: inline; margin: 0; }
.mobile-bottom-nav { display: none; }
@media (max-width: 1020px) {
  .nav-core { display: none; }
  .mobile-only { display: inline-flex; }
  .desktop-menu { display: none; }
  .site-logo { margin-right: auto; }
  .hero-grid, .page-hero-grid, .safety-panel { grid-template-columns: 1fr; }
  .hero-copy { text-align: center; }
  .hero-actions, .hero-points { justify-content: center; }
  .hero-visual { max-width: 680px; margin: 0 auto; }
  .float-one { left: 2%; }
  .article-layout { grid-template-columns: 1fr; }
  .side-card { position: static; }
  .content-grid-4 { grid-template-columns: repeat(2,1fr); }
  .footer-grid { grid-template-columns: 1.5fr 1fr 1fr; }
  .footer-grid > div:last-child { grid-column: 2 / 4; }
}
@media (max-width: 760px) {
  body { padding-bottom: 70px; }
  .container, .narrow { width: min(100% - 28px, 1180px); }
  .header-inner { width: calc(100% - 20px); min-height: 64px; gap: 8px; }
  .site-logo strong { display: none; }
  .site-logo img { max-height: 38px; }
  .compact-btn { min-height: 38px; padding: 0 14px; }
  .menu-toggle { width: 38px; height: 38px; }
  .hero { padding: 56px 0 46px; }
  .hero-grid { gap: 30px; }
  .hero-copy h1 { font-size: 50px; }
  .hero-copy h2 { font-size: 28px; }
  .hero-copy p { font-size: 15px; }
  .hero-float { display: none; }
  .highlight-strip { margin-top: 0; padding-top: 14px; }
  .highlight-grid { grid-template-columns: 1fr 1fr; padding: 12px; }
  .highlight-item { border-right: 0; border-bottom: 1px solid #E8ECF8; }
  .highlight-item:nth-last-child(-n+2) { border-bottom: 0; }
  .section, .article-section { padding: 58px 0; }
  .section-sm { padding: 42px 0; }
  .section-head { display: block; }
  .section-head p { margin-top: 12px; }
  .split-grid, .content-grid-2, .content-grid-3, .review-grid { grid-template-columns: 1fr; }
  .content-grid-4 { grid-template-columns: 1fr; }
  .safety-panel { padding: 24px; }
  .cta-band { grid-template-columns: 1fr; padding: 28px; }
  .page-hero { padding: 54px 0 42px; }
  .page-hero-grid { gap: 26px; }
  .article-layout { gap: 20px; }
  .prose-card { padding: 23px; }
  .drawer-nav { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / 3; }
  .footer-grid > div:last-child { grid-column: auto; }
  .footer-bottom { display: block; }
  .footer-bottom div { margin-top: 12px; flex-wrap: wrap; }
  .mobile-bottom-nav { position: fixed; left: 0; right: 0; bottom: 0; z-index: 9000; display: grid; grid-template-columns: repeat(4,1fr); min-height: 64px; padding-bottom: env(safe-area-inset-bottom); background: rgba(255,255,255,.94); border-top: 1px solid rgba(91,108,255,.16); backdrop-filter: blur(12px); box-shadow: 0 -8px 26px rgba(25,43,91,.10); }
  .mobile-bottom-nav a { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; color: var(--muted); font-size: 12px; }
  .mobile-bottom-nav a span { font-size: 19px; line-height: 1; }
  .mobile-bottom-nav a.active { color: var(--primary); font-weight: 700; }
  .service-table { display: block; overflow-x: auto; white-space: nowrap; }
}
@media (max-width: 440px) {
  .header-actions { gap: 6px; }
  .compact-btn { font-size: 13px; padding: 0 12px; }
  .highlight-grid { grid-template-columns: 1fr; }
  .highlight-item { border-bottom: 1px solid #E8ECF8 !important; }
  .highlight-item:last-child { border-bottom: 0 !important; }
  .hero-actions { display: grid; }
  .hero-actions a { width: 100%; }
}