:root {
    --bg: #F5F7FF;
    --ink: #1F2740;
    --title: #131A35;
    --muted: #66708A;
    --light-muted: #9AA4BA;
    --brand: #5B6CFF;
    --brand-2: #7A5CFF;
    --blue: #00D4FF;
    --deep: #16213E;
    --gold: #FFC857;
    --rose: #D94F70;
    --card: #FFFFFF;
    --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%);
    --radius-xl: 30px;
    --radius-lg: 22px;
    --radius-md: 16px;
}
* { 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; }
img { max-width: 100%; height: auto; object-fit: contain; display: block; }
a { color: var(--brand); text-decoration: none; }
a:hover { color: var(--brand-2); }
button, input, textarea, select { font: inherit; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 12000; background: #fff; color: var(--title); padding: 10px 16px; border-radius: 10px; box-shadow: var(--shadow); }
.skip-link:focus { top: 10px; }
.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; min-height: 72px; margin: 0 auto; padding: 0 24px; display: flex; align-items: center; justify-content: space-between; gap: 22px; }
.site-logo { display: inline-flex; align-items: center; gap: 10px; min-width: max-content; color: #fff; font-weight: 800; letter-spacing: .04em; }
.site-logo:hover { color: #fff; }
.site-logo img { max-height: 44px; width: auto; }
.nav-core { display: flex; align-items: center; justify-content: center; gap: 8px; }
.nav-core a { color: #EEF2FF; padding: 8px 12px; border-radius: 999px; white-space: nowrap; font-size: 15px; }
.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; min-width: max-content; }
.main-btn, .outline-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 10px 22px; border-radius: 999px; font-weight: 700; transition: transform .2s ease, box-shadow .2s ease; }
.main-btn { color: #fff; background: var(--gradient); box-shadow: 0 14px 32px rgba(91,108,255,.22); }
.main-btn:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 18px 38px rgba(91,108,255,.28); }
.outline-btn { color: var(--brand); border: 1px solid var(--line); background: rgba(255,255,255,.76); }
.menu-toggle { width: 42px; height: 42px; padding: 10px; border: 0; border-radius: 13px; background: rgba(255,255,255,.1); cursor: pointer; display: grid; align-content: center; gap: 5px; }
.menu-toggle span { display: block; width: 100%; height: 2px; border-radius: 2px; background: #fff; }
.mobile-menu-toggle { display: none; }
.drawer-overlay { position: fixed; inset: 0; z-index: 10000; background: rgba(7,12,29,.58); opacity: 0; visibility: hidden; transition: .25s ease; }
.drawer-overlay.is-visible { opacity: 1; visibility: visible; }
.site-drawer { position: fixed; top: 0; right: 0; z-index: 10001; width: min(390px, 88vw); height: 100dvh; padding: 24px; background: #fff; box-shadow: -20px 0 50px rgba(9,18,43,.25); transform: translateX(105%); transition: transform .28s ease; overflow-y: auto; }
.site-drawer.is-open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.drawer-brand { display: flex; align-items: center; gap: 10px; color: var(--title); font-weight: 800; }
.drawer-brand img { height: 38px; width: auto; }
.drawer-close { border: 0; background: #EFF2FF; color: var(--title); width: 40px; height: 40px; border-radius: 50%; font-size: 28px; cursor: pointer; }
.drawer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 22px 0; }
.drawer-nav a { color: var(--ink); background: #F6F8FF; border: 1px solid rgba(91,108,255,.1); border-radius: 14px; padding: 11px 13px; }
.drawer-nav a:hover { color: var(--brand); border-color: var(--line); background: #EEF2FF; }
.drawer-note { padding: 18px; border-radius: 18px; color: #EAF7FF; background: linear-gradient(140deg, #16213E, #11182F); }
.drawer-note p { margin: 8px 0 0; color: #C8D1EB; font-size: 14px; }
.container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.section { padding: 80px 0; }
.section-sm { padding: 48px 0; }
.section-head { max-width: 760px; margin-bottom: 30px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-kicker { display: inline-flex; align-items: center; gap: 8px; color: var(--brand); font-size: 14px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.section-kicker::before { content: ""; width: 28px; height: 3px; border-radius: 2px; background: linear-gradient(90deg, var(--gold), var(--blue)); }
h1, h2, h3, .section-title { color: var(--title); line-height: 1.25; margin-top: 0; }
h1 { font-size: clamp(40px, 7vw, 78px); letter-spacing: -.04em; }
h2, .section-title { font-size: clamp(28px, 4vw, 44px); letter-spacing: -.025em; }
h3 { font-size: 22px; }
p { margin: 0 0 1em; }
.lead { color: #49536E; font-size: clamp(17px, 2vw, 20px); }
.hero { position: relative; padding: 76px 0 64px; overflow: hidden; background: radial-gradient(circle at 12% 12%, rgba(122,92,255,.2), transparent 30%), radial-gradient(circle at 88% 24%, rgba(0,212,255,.18), transparent 28%), linear-gradient(145deg, #F8F5FF 0%, #EFF8FF 55%, #FFF7FB 100%); }
.hero::before, .hero::after { content: ""; position: absolute; border-radius: 50%; filter: blur(2px); pointer-events: none; }
.hero::before { width: 210px; height: 210px; left: -70px; bottom: 40px; background: rgba(255,200,87,.18); }
.hero::after { width: 280px; height: 280px; right: -90px; top: -60px; background: rgba(217,79,112,.12); }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.04fr .96fr; gap: 56px; align-items: center; }
.hero-copy h1 { margin-bottom: 12px; }
.hero-subtitle { margin: 0 0 18px; color: var(--brand-2); font-size: clamp(22px, 3vw, 34px); font-weight: 800; }
.hero-copy .lead { max-width: 690px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0; }
.hero-points { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.hero-points span { display: inline-flex; align-items: center; gap: 8px; color: var(--deep); background: rgba(255,255,255,.72); border: 1px solid rgba(91,108,255,.14); border-radius: 999px; padding: 8px 13px; font-size: 14px; }
.hero-visual { position: relative; }
.hero-visual::before { content: ""; position: absolute; inset: 8% 2% -2% 16%; border-radius: 38px; background: var(--gradient); opacity: .2; filter: blur(24px); }
.hero-visual img { position: relative; width: 100%; max-height: 620px; object-fit: contain; filter: drop-shadow(0 25px 32px rgba(30,47,90,.2)); }
.highlight-strip { margin-top: -24px; position: relative; z-index: 2; }
.highlight-grid { display: grid; grid-template-columns: repeat(4, 1fr); background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow); border-radius: var(--radius-xl); overflow: hidden; }
.highlight-item { padding: 24px; }
.highlight-item + .highlight-item { border-left: 1px solid var(--line); }
.highlight-item strong { display: block; color: var(--title); font-size: 18px; margin-bottom: 6px; }
.highlight-item p { margin: 0; color: var(--muted); font-size: 14px; }
.pill-nav { display: flex; gap: 12px; overflow-x: auto; padding: 3px 0 12px; scrollbar-width: thin; }
.pill { min-width: 188px; padding: 15px 17px; border-radius: 18px; background: #fff; border: 1px solid var(--line); box-shadow: 0 10px 24px rgba(25,43,91,.07); }
.pill strong { display: block; color: var(--title); margin-bottom: 4px; }
.pill small { display: block; min-height: 44px; color: var(--muted); line-height: 1.55; }
.pill a { display: inline-block; margin-top: 8px; font-size: 14px; font-weight: 700; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 34px; align-items: center; }
.split.reverse .media { order: -1; }
.media { position: relative; }
.media img { width: 100%; max-height: 520px; padding: 18px; border-radius: 32px; background: linear-gradient(145deg, rgba(91,108,255,.08), rgba(0,212,255,.08)); box-shadow: var(--shadow); }
.copy-card { padding: clamp(26px, 4vw, 46px); background: #fff; border: 1px solid var(--line); border-radius: var(--radius-xl); box-shadow: var(--shadow); }
.copy-card p:last-child { margin-bottom: 0; }
.card-grid { display: grid; gap: 24px; }
.card-grid.two { grid-template-columns: repeat(2, 1fr); }
.card-grid.three { grid-template-columns: repeat(3, 1fr); }
.card-grid.four { grid-template-columns: repeat(4, 1fr); }
.card, .zone-card, .info-card, .review-card { background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow); border-radius: var(--radius-lg); }
.card, .info-card, .review-card { padding: 26px; }
.zone-card { overflow: hidden; }
.zone-card img { width: 100%; aspect-ratio: 16/10; object-fit: contain; background: linear-gradient(145deg, #EEF1FF, #EAFBFF); padding: 16px; }
.zone-card .zone-body { padding: 26px; }
.zone-card ul, .feature-list { margin: 16px 0 0; padding: 0; list-style: none; }
.zone-card li, .feature-list li { position: relative; padding-left: 22px; margin: 9px 0; color: var(--muted); }
.zone-card li::before, .feature-list li::before { content: ""; position: absolute; left: 0; top: .72em; width: 8px; height: 8px; border-radius: 50%; background: linear-gradient(135deg, var(--brand), var(--blue)); }
.text-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 12px; font-weight: 700; }
.text-link::after { content: "→"; transition: transform .2s ease; }
.text-link:hover::after { transform: translateX(4px); }
.dark-section { color: #EDF2FF; background: linear-gradient(145deg, #11182F, #16213E 60%, #141D3B); }
.dark-section h2, .dark-section h3 { color: #fff; }
.dark-section p { color: #C8D1EB; }
.security-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.security-card { display: grid; grid-template-columns: 180px 1fr; gap: 24px; align-items: center; padding: 24px; border: 1px solid rgba(255,255,255,.12); border-radius: 24px; background: rgba(255,255,255,.06); }
.security-card img { width: 100%; max-height: 180px; }
.review-card { position: relative; }
.review-card::before { content: "“"; position: absolute; right: 18px; top: 6px; color: rgba(91,108,255,.12); font: 700 70px Georgia, serif; line-height: 1; }
.review-card p { position: relative; margin: 0; color: #4F5870; }
.review-card strong { display: block; margin-top: 14px; color: var(--title); }
.faq-list { display: grid; gap: 14px; }
details { background: #fff; border: 1px solid var(--line); border-radius: 17px; padding: 0 20px; box-shadow: 0 10px 25px rgba(25,43,91,.06); }
summary { cursor: pointer; color: var(--title); font-weight: 700; padding: 18px 38px 18px 0; list-style: none; position: relative; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 0; top: 14px; color: var(--brand); font-size: 26px; }
details[open] summary::after { content: "−"; }
details p { padding: 0 0 18px; margin: 0; color: var(--muted); }
.notice { padding: 28px; border: 1px solid rgba(255,200,87,.45); border-radius: 24px; background: linear-gradient(135deg, #FFF8E5, #F2F6FF); }
.notice h2, .notice h3 { margin-bottom: 10px; }
.inner-hero { position: relative; padding: 70px 0; overflow: hidden; background: radial-gradient(circle at 14% 20%, rgba(122,92,255,.2), transparent 32%), linear-gradient(135deg, #F8F5FF, #EAF7FF); }
.inner-hero-grid { display: grid; grid-template-columns: 1fr .8fr; gap: 50px; align-items: center; }
.inner-hero h1 { font-size: clamp(38px, 6vw, 64px); margin-bottom: 16px; }
.inner-hero img { width: 100%; max-height: 430px; padding: 18px; border-radius: 30px; background: rgba(255,255,255,.58); box-shadow: var(--shadow); }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; font-size: 14px; color: var(--muted); }
.breadcrumbs a { font-weight: 700; }
.content-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 34px; align-items: start; }
.prose { padding: clamp(26px, 4vw, 44px); background: #fff; border: 1px solid var(--line); border-radius: var(--radius-xl); box-shadow: var(--shadow); }
.prose h2 { margin-top: 40px; font-size: clamp(25px, 3vw, 34px); }
.prose h2:first-child { margin-top: 0; }
.prose h3 { margin-top: 28px; }
.prose p { color: #46516B; }
.prose ul, .prose ol { padding-left: 1.3em; color: #46516B; }
.prose li { margin: 8px 0; }
.sidebar { position: sticky; top: 98px; display: grid; gap: 18px; }
.sidebar-card { padding: 22px; background: #fff; border: 1px solid var(--line); border-radius: 20px; box-shadow: 0 14px 30px rgba(25,43,91,.09); }
.sidebar-card h2, .sidebar-card h3 { font-size: 20px; margin-bottom: 10px; }
.sidebar-card a { display: block; padding: 7px 0; border-bottom: 1px dashed rgba(91,108,255,.16); }
.sidebar-card a:last-child { border-bottom: 0; }
.steps { counter-reset: steps; display: grid; gap: 16px; }
.step { position: relative; padding: 22px 22px 22px 76px; background: #F8F9FF; border: 1px solid rgba(91,108,255,.14); border-radius: 18px; }
.step::before { counter-increment: steps; content: counter(steps); position: absolute; left: 20px; top: 20px; display: grid; place-items: center; width: 38px; height: 38px; border-radius: 50%; color: #fff; font-weight: 800; background: var(--gradient); }
.cta-band { display: flex; align-items: center; justify-content: space-between; gap: 28px; padding: 38px; border-radius: 28px; background: linear-gradient(135deg, #5B6CFF, #7A5CFF 55%, #00BFEA); color: #fff; 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; }
.cta-band .main-btn { background: #fff; color: var(--brand); box-shadow: none; white-space: nowrap; }
.cta-band .main-btn:hover { color: var(--brand-2); }
.site-footer { color: #EEF2FF; background: #0B1024; }
.footer-inner { width: min(1180px, calc(100% - 40px)); margin: 0 auto; padding: 62px 0 40px; display: grid; grid-template-columns: 1.1fr 2fr; gap: 52px; }
.footer-brand p { color: #AAB4CF; max-width: 390px; margin-top: 18px; }
.footer-logo img { max-height: 48px; }
.footer-links { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.footer-links h2 { color: #fff; font-size: 16px; margin-bottom: 13px; }
.footer-links a { display: block; color: #BBC5DD; 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; }
.footer-bottom p { margin: 0; color: #8F9AB5; font-size: 13px; }
.mobile-bottom-nav { display: none; }
@media (max-width: 1060px) {
    .nav-core a:nth-child(5), .nav-core a:nth-child(6) { display: none; }
    .card-grid.four { grid-template-columns: repeat(2, 1fr); }
    .card-grid.three { grid-template-columns: repeat(2, 1fr); }
    .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(--line); }
    .highlight-item:nth-child(n+3) { border-top: 1px solid var(--line); }
    .footer-inner { grid-template-columns: 1fr; }
}
@media (max-width: 820px) {
    .header-inner { min-height: 64px; padding: 0 14px; gap: 10px; }
    .nav-core, .desktop-menu-toggle { display: none; }
    .mobile-menu-toggle { display: grid; }
    .site-logo { position: absolute; left: 50%; transform: translateX(-50%); }
    .site-logo span { display: none; }
    .site-logo img { max-height: 38px; }
    .header-actions { margin-left: auto; }
    .header-cta { min-height: 38px; padding: 7px 14px; font-size: 14px; }
    .hero { padding-top: 52px; }
    .hero-grid, .inner-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: 620px; margin: 0 auto; }
    .split.reverse .media { order: 0; }
    .security-grid { grid-template-columns: 1fr; }
    .sidebar { position: static; grid-template-columns: repeat(2, 1fr); }
    .cta-band { align-items: flex-start; flex-direction: column; }
    .footer-links { grid-template-columns: repeat(2, 1fr); }
    .mobile-bottom-nav { position: fixed; left: 10px; right: 10px; bottom: max(10px, env(safe-area-inset-bottom)); z-index: 9000; display: grid; grid-template-columns: repeat(4, 1fr); padding: 8px; border: 1px solid rgba(91,108,255,.18); border-radius: 20px; background: rgba(255,255,255,.93); backdrop-filter: blur(16px); box-shadow: 0 12px 35px rgba(15,28,65,.18); }
    .mobile-bottom-nav a { display: grid; place-items: center; gap: 1px; color: var(--muted); font-size: 12px; }
    .mobile-bottom-nav span { color: var(--brand); font-size: 18px; }
    body { padding-bottom: 88px; }
}
@media (max-width: 620px) {
    .container { width: min(100% - 28px, 1180px); }
    .section { padding: 58px 0; }
    .hero { padding: 44px 0 52px; }
    .highlight-strip { margin-top: -16px; }
    .highlight-grid, .card-grid.two, .card-grid.three, .card-grid.four, .sidebar { grid-template-columns: 1fr; }
    .highlight-item:nth-child(even) { border-left: 0; }
    .highlight-item + .highlight-item { border-top: 1px solid var(--line); }
    .security-card { grid-template-columns: 1fr; }
    .security-card img { max-width: 220px; margin: 0 auto; }
    .drawer-nav { grid-template-columns: 1fr; }
    .footer-links { grid-template-columns: 1fr 1fr; }
    .footer-inner { padding-top: 48px; }
    .copy-card, .prose { padding: 24px; }
    .cta-band { padding: 28px; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}