:root {
    --bg: #F5F7FF;
    --nav: rgba(12,18,40,.94);
    --title: #131A35;
    --primary: #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: 24px;
    --shell: 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.menu-open { overflow: hidden; }
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--lavender); }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea { font: inherit; }
button { cursor: pointer; }
.shell { width: min(calc(100% - 40px), var(--shell)); margin-inline: auto; }
.skip-link { position: fixed; left: 12px; top: -60px; background: #fff; padding: 10px 16px; border-radius: 10px; z-index: 12000; }
.skip-link:focus { top: 12px; }
.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% - 40px), 1280px); margin: 0 auto; min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.site-logo, .footer-logo { display: inline-flex; align-items: center; gap: 10px; color: #fff; font-weight: 800; white-space: nowrap; }
.site-logo img { width: 44px; height: 44px; object-fit: contain; }
.nav-core { display: flex; align-items: center; justify-content: center; gap: 6px; flex: 1; }
.nav-core a { color: #EEF2FF; padding: 8px 12px; border-radius: 999px; 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; justify-content: center; align-items: center; min-height: 46px; padding: 11px 22px; color: #fff; font-weight: 700; border-radius: 999px; background: var(--gradient); 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 38px rgba(91,108,255,.32); }
.compact-btn { min-height: 42px; padding: 9px 18px; }
.full-btn { width: 100%; }
.menu-toggle { width: 44px; height: 44px; border: 1px solid rgba(255,255,255,.18); border-radius: 14px; background: rgba(255,255,255,.08); display: inline-flex; flex-direction: column; align-items: center; justify-content: center; gap: 5px; }
.menu-toggle span { width: 19px; height: 2px; background: #fff; border-radius: 2px; }
.mobile-menu-toggle { display: none; }
.drawer-overlay { position: fixed; inset: 0; z-index: 10010; background: rgba(6,10,28,.58); opacity: 0; transition: opacity .25s ease; }
.drawer-overlay.is-visible { opacity: 1; }
.site-drawer { position: fixed; z-index: 10020; top: 0; right: 0; width: min(390px, 92vw); height: 100dvh; padding: 24px; background: #fff; box-shadow: -30px 0 60px rgba(7,16,48,.22); transform: translateX(105%); transition: transform .28s ease; overflow-y: auto; }
.site-drawer.is-open { transform: translateX(0); }
.drawer-head { display: flex; justify-content: space-between; align-items: center; padding-bottom: 18px; border-bottom: 1px solid var(--border); color: var(--title); }
.drawer-close { width: 42px; height: 42px; border-radius: 50%; border: 0; background: #EEF0FF; color: var(--deep); font-size: 28px; line-height: 1; }
.drawer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; padding: 22px 0; }
.drawer-nav a { padding: 12px 14px; background: #F5F7FF; border: 1px solid var(--border); border-radius: 14px; color: var(--text); font-weight: 600; }
.drawer-nav a:hover { color: var(--primary); border-color: var(--primary); }
.drawer-note { padding: 18px; border-radius: 18px; background: linear-gradient(145deg,#EEF2FF,#EAFBFF); color: var(--muted); }
.drawer-note p { margin-top: 0; }
.hero { position: relative; overflow: hidden; padding: 76px 0 58px; background: radial-gradient(circle at 10% 10%,rgba(122,92,255,.18),transparent 34%), radial-gradient(circle at 90% 8%,rgba(0,212,255,.18),transparent 34%), linear-gradient(135deg,#F9F5FF 0%,#EEF6FF 54%,#FFF7FC 100%); }
.hero::before, .hero::after { content: ""; position: absolute; border-radius: 50%; filter: blur(4px); opacity: .52; }
.hero::before { width: 240px; height: 240px; background: rgba(91,108,255,.13); left: -90px; bottom: -80px; }
.hero::after { width: 180px; height: 180px; background: rgba(255,200,87,.16); right: 8%; top: 12%; }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.02fr .98fr; align-items: center; gap: 56px; }
.eyebrow, .section-kicker { display: inline-flex; align-items: center; gap: 8px; color: var(--primary); font-weight: 800; letter-spacing: .08em; font-size: 14px; text-transform: uppercase; }
.eyebrow::before, .section-kicker::before { content: ""; width: 24px; height: 3px; border-radius: 99px; background: var(--gradient); }
h1, h2, h3, .section-title { color: var(--title); line-height: 1.25; }
h1 { margin: 14px 0 16px; font-size: clamp(44px, 6vw, 76px); letter-spacing: -.04em; }
.hero-subtitle { margin: 0 0 20px; font-size: clamp(22px, 2.5vw, 34px); color: var(--deep); font-weight: 750; }
.hero-copy { max-width: 700px; color: var(--muted); font-size: 17px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.secondary-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 10px 20px; border: 1px solid var(--border); border-radius: 999px; background: rgba(255,255,255,.76); color: var(--deep); font-weight: 700; }
.hero-points { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; padding: 0; list-style: none; }
.hero-points li { padding: 8px 12px; border-radius: 999px; background: rgba(255,255,255,.82); border: 1px solid var(--border); font-size: 14px; color: var(--muted); }
.hero-visual { position: relative; padding: 20px; }
.hero-visual::before { content: ""; position: absolute; inset: 8% 0 0 8%; border-radius: 34px; background: var(--gradient); opacity: .15; transform: rotate(5deg); }
.hero-visual img { position: relative; z-index: 1; width: 100%; object-fit: contain; filter: drop-shadow(0 30px 40px rgba(25,43,91,.2)); }
.highlight-strip { margin-top: -1px; background: #fff; border-block: 1px solid var(--border); }
.highlight-grid { display: grid; grid-template-columns: repeat(4,1fr); }
.highlight-item { padding: 24px 22px; border-right: 1px solid var(--border); }
.highlight-item:last-child { border-right: 0; }
.highlight-item strong { display: block; color: var(--title); margin-bottom: 5px; font-size: 17px; }
.highlight-item p { margin: 0; color: var(--muted); font-size: 14px; }
.section { padding: 84px 0; }
.section-sm { padding: 58px 0; }
.section-alt { background: #fff; }
.section-deep { color: #EEF2FF; background: linear-gradient(135deg,#11182F,#16213E); }
.section-deep h2, .section-deep h3 { color: #fff; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 30px; margin-bottom: 34px; }
.section-head > div { max-width: 760px; }
.section-title { margin: 10px 0 12px; font-size: clamp(30px,4vw,48px); }
.section-intro { margin: 0; color: var(--muted); font-size: 17px; }
.channel-pills { display: flex; flex-wrap: wrap; gap: 12px; }
.channel-pill { flex: 1 1 205px; min-height: 112px; padding: 18px; border: 1px solid var(--border); border-radius: 20px; background: #fff; box-shadow: 0 10px 30px rgba(25,43,91,.07); }
.channel-pill strong { display: block; color: var(--title); margin-bottom: 5px; }
.channel-pill span { display: block; color: var(--muted); font-size: 14px; }
.channel-pill a { display: inline-block; margin-top: 8px; font-weight: 700; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 34px; align-items: center; }
.split.reverse .media-panel { order: -1; }
.copy-panel p { color: var(--muted); }
.media-panel, .card, .zone-card, .info-card, .review-card { background: #fff; border: 1px solid var(--border); box-shadow: var(--shadow); border-radius: var(--radius); }
.media-panel { padding: 18px; }
.media-panel img, .zone-card img, .content-img, .app-section img { width: 100%; height: auto; object-fit: contain; border-radius: 18px; }
.feature-list { display: grid; gap: 12px; padding: 0; margin: 22px 0; list-style: none; }
.feature-list li { position: relative; padding-left: 28px; color: var(--muted); }
.feature-list li::before { content: "✓"; position: absolute; left: 0; top: 0; width: 20px; height: 20px; border-radius: 50%; color: #fff; background: var(--gradient); display: grid; place-items: center; font-size: 12px; }
.cards-2, .cards-3, .cards-4 { display: grid; gap: 24px; }
.cards-2 { grid-template-columns: repeat(2,1fr); }
.cards-3 { grid-template-columns: repeat(3,1fr); }
.cards-4 { grid-template-columns: repeat(4,1fr); }
.zone-card, .info-card, .review-card, .card { padding: 24px; overflow: hidden; }
.zone-card img { margin-bottom: 20px; aspect-ratio: 16/10; }
.zone-card h3, .info-card h3, .card h3 { margin: 0 0 10px; font-size: 23px; }
.zone-card p, .info-card p, .review-card p, .card p { color: var(--muted); }
.text-link { font-weight: 750; color: var(--primary); }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0; }
.tag { padding: 6px 10px; border-radius: 999px; background: #FFF4D6; color: #8B6812; font-size: 13px; font-weight: 700; }
.safety-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.safety-panel { padding: 28px; border-radius: 24px; background: linear-gradient(145deg,#EFF8FF,#fff); border: 1px solid var(--border); }
.safety-panel:last-child { background: linear-gradient(145deg,#F8F2FF,#fff); }
.safety-panel img { max-height: 300px; margin: 0 auto 18px; object-fit: contain; }
.review-card { position: relative; }
.review-card::before { content: "“"; position: absolute; right: 22px; top: 6px; color: rgba(91,108,255,.16); font: 700 76px 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 20px; box-shadow: 0 8px 24px rgba(25,43,91,.06); }
summary { cursor: pointer; padding: 18px 34px 18px 0; color: var(--title); font-weight: 750; list-style: none; position: relative; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 0; top: 16px; font-size: 24px; color: var(--primary); }
details[open] summary::after { content: "−"; }
details p { margin: 0 0 20px; color: var(--muted); }
.notice-box { padding: 30px; border-radius: 24px; background: linear-gradient(135deg,#FFF4D6,#FFF9EA); border: 1px solid rgba(255,200,87,.45); }
.notice-box h2 { margin-top: 0; }
.inner-hero { padding: 64px 0 52px; background: radial-gradient(circle at 80% 0,rgba(0,212,255,.17),transparent 36%), radial-gradient(circle at 15% 35%,rgba(122,92,255,.16),transparent 34%), linear-gradient(140deg,#F6F4FF,#EEF8FF); }
.inner-hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 46px; }
.inner-hero h1 { font-size: clamp(40px,5vw,64px); }
.inner-hero p { color: var(--muted); font-size: 18px; }
.inner-hero img { max-height: 460px; width: 100%; object-fit: contain; filter: drop-shadow(0 26px 42px rgba(25,43,91,.18)); }
.prose { max-width: 920px; margin-inline: auto; }
.prose h2 { margin-top: 42px; font-size: 30px; }
.prose p { color: var(--muted); font-size: 16.5px; }
.step-list { counter-reset: step; display: grid; gap: 16px; }
.step { counter-increment: step; padding: 22px 22px 22px 72px; background: #fff; border: 1px solid var(--border); border-radius: 18px; position: relative; }
.step::before { content: counter(step); position: absolute; left: 20px; top: 20px; width: 36px; height: 36px; display: grid; place-items: center; border-radius: 50%; color: #fff; background: var(--gradient); font-weight: 800; }
.step h3 { margin: 0 0 6px; font-size: 19px; }
.step p { margin: 0; }
.cta-band { padding: 34px; border-radius: 28px; background: linear-gradient(125deg,#5B6CFF,#7A5CFF 55%,#00BFE9); color: #fff; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.cta-band h2 { color: #fff; margin: 0 0 8px; }
.cta-band p { margin: 0; opacity: .88; }
.cta-band .secondary-btn { background: #fff; border: 0; color: var(--primary); white-space: nowrap; }
.site-footer { padding: 62px 0 18px; background: #0B1024; color: #EEF2FF; }
.footer-grid { display: grid; grid-template-columns: 1.6fr repeat(3,1fr); gap: 34px; }
.footer-grid h2 { color: #fff; font-size: 17px; margin: 0 0 14px; }
.footer-grid a { display: block; color: #C9D1EC; padding: 5px 0; }
.footer-grid a:hover { color: #fff; }
.footer-brand p { color: #AEB8D5; max-width: 390px; }
.footer-logo img { width: 44px; height: 44px; object-fit: contain; }
.footer-bottom { margin-top: 38px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.12); display: flex; justify-content: space-between; gap: 24px; color: #98A4C8; font-size: 14px; }
.footer-bottom p { margin: 0; max-width: 820px; }
.footer-bottom div { display: flex; gap: 16px; white-space: nowrap; }
.footer-bottom a { color: #C9D1EC; }
.mobile-bottom-nav { display: none; }
@media (max-width: 1100px) {
    .nav-core { display: none; }
    .mobile-menu-toggle { display: inline-flex; }
    .desktop-menu-toggle { display: none; }
    .header-inner { display: grid; grid-template-columns: 46px 1fr auto; }
    .site-logo { justify-self: center; }
    .cards-4 { grid-template-columns: repeat(2,1fr); }
    .footer-grid { grid-template-columns: 1.4fr repeat(3,1fr); }
}
@media (max-width: 860px) {
    .hero { padding-top: 54px; }
    .hero-grid, .inner-hero-grid, .split, .safety-grid { grid-template-columns: 1fr; }
    .hero-visual { max-width: 650px; margin-inline: auto; }
    .split.reverse .media-panel { order: 0; }
    .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); }
    .cards-3 { grid-template-columns: 1fr 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-brand { grid-column: 1/-1; }
    .section { padding: 68px 0; }
}
@media (max-width: 620px) {
    .shell, .header-inner { width: min(calc(100% - 28px), var(--shell)); }
    .header-inner { min-height: 64px; gap: 8px; }
    .site-logo span { display: none; }
    .site-logo img { width: 40px; height: 40px; }
    .compact-btn { min-height: 38px; padding: 8px 13px; font-size: 13px; }
    .menu-toggle { width: 40px; height: 40px; }
    .hero { padding: 44px 0 36px; }
    h1 { font-size: 44px; }
    .hero-subtitle { font-size: 23px; }
    .hero-copy, .section-intro, .inner-hero p { font-size: 16px; }
    .hero-actions { display: grid; grid-template-columns: 1fr 1fr; }
    .hero-actions a { width: 100%; }
    .highlight-grid, .cards-2, .cards-3, .cards-4 { grid-template-columns: 1fr; }
    .highlight-item { border-right: 0; border-bottom: 1px solid var(--border); }
    .highlight-item:last-child { border-bottom: 0; }
    .section { padding: 56px 0; }
    .section-sm { padding: 42px 0; }
    .section-head { display: block; }
    .section-title { font-size: 32px; }
    .zone-card, .info-card, .review-card, .card { padding: 20px; }
    .cta-band { padding: 26px; display: block; }
    .cta-band .secondary-btn { margin-top: 18px; width: 100%; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
    .footer-bottom { display: block; padding-bottom: 76px; }
    .footer-bottom div { margin-top: 12px; flex-wrap: wrap; }
    .mobile-bottom-nav { position: fixed; z-index: 9800; left: 10px; right: 10px; bottom: max(10px,env(safe-area-inset-bottom)); display: grid; grid-template-columns: repeat(4,1fr); padding: 8px; border: 1px solid rgba(91,108,255,.16); border-radius: 20px; background: rgba(255,255,255,.93); backdrop-filter: blur(14px); box-shadow: 0 16px 40px rgba(25,43,91,.2); }
    .mobile-bottom-nav a { display: grid; justify-items: center; gap: 1px; color: var(--muted); font-size: 12px; }
    .mobile-bottom-nav span { font-size: 19px; color: var(--primary); }
    .site-footer { padding-bottom: 14px; }
    .drawer-nav { grid-template-columns: 1fr; }
}