:root {
    --bg: #F5F7FF;
    --ink: #1F2740;
    --title: #131A35;
    --muted: #66708A;
    --soft: #9AA4BA;
    --brand: #5B6CFF;
    --brand2: #7A5CFF;
    --cyan: #00D4FF;
    --gold: #FFC857;
    --deep: #16213E;
    --footer: #0B1024;
    --card: #FFFFFF;
    --line: rgba(91,108,255,.18);
    --shadow: 0 20px 46px rgba(25,43,91,.14);
    --radius: 24px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif; line-height: 1.75; overflow-x: hidden; }
body.drawer-open { overflow: hidden; }
a { color: inherit; }
img { max-width: 100%; height: auto; }
main { min-height: 70vh; }
.container { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.narrow { width: min(880px, calc(100% - 40px)); margin-inline: 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)); margin: 0 auto; min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 22px; }
.site-logo { display: inline-flex; align-items: center; min-width: 112px; }
.site-logo img { width: 112px; max-height: 44px; object-fit: contain; display: block; }
.nav-core { display: flex; align-items: center; justify-content: center; gap: 8px; flex: 1; }
.nav-core a { color: #EEF2FF; text-decoration: none; border-radius: 999px; padding: 8px 12px; 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; }
.main-btn, .secondary-btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px; padding: 0 24px; border-radius: 999px; text-decoration: none; font-weight: 700; transition: transform .2s ease, box-shadow .2s ease; }
.main-btn { background: linear-gradient(135deg,#5B6CFF 0%,#7A5CFF 48%,#00D4FF 100%); color: #fff; box-shadow: 0 14px 32px rgba(91,108,255,.22); }
.main-btn:hover, .secondary-btn:hover { transform: translateY(-2px); }
.compact-btn { min-height: 42px; padding: 0 18px; font-size: 14px; }
.secondary-btn { border: 1px solid var(--line); background: #fff; color: var(--brand); }
.menu-button { width: 42px; height: 42px; border: 1px solid rgba(255,255,255,.16); border-radius: 14px; background: rgba(255,255,255,.08); display: inline-flex; flex-direction: column; justify-content: center; align-items: center; gap: 5px; cursor: pointer; }
.menu-button span { width: 18px; height: 2px; background: #fff; border-radius: 2px; }
.mobile-menu-button { display: none; }
.drawer-overlay { position: fixed; inset: 0; z-index: 10000; background: rgba(4,8,24,.58); opacity: 0; transition: opacity .25s ease; }
.drawer-overlay.show { opacity: 1; }
.site-drawer { position: fixed; top: 0; right: 0; z-index: 10001; width: min(390px, 88vw); height: 100dvh; overflow-y: auto; background: #fff; padding: 24px; box-shadow: -20px 0 60px rgba(5,12,38,.24); transform: translateX(105%); transition: transform .28s ease; }
.site-drawer.open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.drawer-logo img { width: 108px; }
.drawer-close { width: 42px; height: 42px; border: 0; border-radius: 14px; background: #EEF1FF; color: var(--title); font-size: 26px; cursor: pointer; }
.drawer-intro { color: var(--muted); margin: 20px 0; }
.drawer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.drawer-nav a { display: flex; align-items: center; justify-content: space-between; text-decoration: none; padding: 12px 14px; border-radius: 14px; background: #F7F8FF; color: var(--title); border: 1px solid transparent; }
.drawer-nav a:hover, .drawer-nav a.active { border-color: var(--line); color: var(--brand); background: #F0F2FF; }
.drawer-note { margin-top: 20px; padding: 16px; border-radius: 16px; background: #FFF7E5; color: #725620; font-size: 13px; }
.hero { position: relative; overflow: hidden; padding: 78px 0 68px; background: radial-gradient(circle at 15% 15%,rgba(122,92,255,.18),transparent 31%), radial-gradient(circle at 86% 8%,rgba(0,212,255,.18),transparent 34%), linear-gradient(145deg,#F8F4FF 0%,#ECF8FF 52%,#FFF6FA 100%); }
.hero::before, .hero::after { content: ""; position: absolute; border-radius: 50%; filter: blur(2px); pointer-events: none; }
.hero::before { width: 230px; height: 230px; left: -90px; bottom: -90px; background: rgba(255,200,87,.18); }
.hero::after { width: 180px; height: 180px; right: 6%; top: 12%; background: rgba(217,79,112,.10); }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.02fr .98fr; align-items: center; gap: 54px; }
.kicker, .section-kicker { display: inline-flex; align-items: center; gap: 8px; color: var(--brand); font-size: 14px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.kicker::before, .section-kicker::before { content: ""; width: 24px; height: 3px; border-radius: 3px; background: linear-gradient(90deg,var(--gold),var(--cyan)); }
h1, h2, h3, .section-title { color: var(--title); line-height: 1.24; margin-top: 0; }
h1 { font-size: clamp(42px,6vw,82px); margin-bottom: 18px; letter-spacing: -.035em; }
.hero h1 small { display: block; margin-top: 14px; font-size: clamp(24px,3vw,40px); letter-spacing: -.02em; }
.hero-copy { font-size: 18px; color: var(--muted); max-width: 680px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; padding: 0; list-style: none; }
.hero-tags li { padding: 8px 13px; border-radius: 999px; background: rgba(255,255,255,.74); border: 1px solid rgba(91,108,255,.14); color: var(--title); font-size: 14px; }
.hero-visual { position: relative; }
.hero-visual::before { content: ""; position: absolute; inset: 12% 4% 2% 15%; border-radius: 40px; background: linear-gradient(135deg,rgba(91,108,255,.18),rgba(0,212,255,.14)); transform: rotate(5deg); }
.hero-visual img { position: relative; z-index: 1; width: 100%; max-height: 630px; object-fit: contain; filter: drop-shadow(0 28px 40px rgba(25,43,91,.22)); }
.section { padding: 78px 0; }
.section-tight { padding: 44px 0; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 28px; margin-bottom: 30px; }
.section-head h2 { font-size: clamp(30px,4vw,48px); margin-bottom: 8px; }
.section-head p { color: var(--muted); max-width: 680px; margin: 0; }
.card, .zone-card, .info-card, .review-card { background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow); border-radius: var(--radius); }
.highlight-strip { margin-top: -26px; position: relative; z-index: 4; }
.highlight-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 14px; }
.highlight-item { padding: 22px; }
.highlight-item strong { display: block; color: var(--title); font-size: 18px; margin-bottom: 7px; }
.highlight-item p { color: var(--muted); margin: 0; font-size: 14px; }
.pill-grid { display: flex; flex-wrap: wrap; gap: 12px; }
.pill-link { flex: 1 1 210px; min-width: 0; display: block; padding: 16px 18px; border-radius: 18px; background: #fff; border: 1px solid var(--line); text-decoration: none; box-shadow: 0 10px 26px rgba(25,43,91,.07); }
.pill-link strong { display: block; color: var(--brand); margin-bottom: 3px; }
.pill-link span { color: var(--muted); font-size: 13px; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: stretch; }
.media-card { overflow: hidden; display: grid; grid-template-rows: auto 1fr; }
.media-card img { width: 100%; height: 300px; object-fit: contain; background: linear-gradient(145deg,#EEF0FF,#EAFBFF); }
.media-card .card-body { padding: 28px; }
.media-card h3 { font-size: 27px; margin-bottom: 12px; }
.media-card p { color: var(--muted); }
.feature-row { display: grid; grid-template-columns: .92fr 1.08fr; gap: 34px; align-items: center; }
.feature-row.reverse { grid-template-columns: 1.08fr .92fr; }
.feature-row.reverse .feature-image { order: 2; }
.feature-image { padding: 18px; overflow: hidden; }
.feature-image img { width: 100%; max-height: 480px; object-fit: contain; }
.feature-copy h2 { font-size: clamp(31px,4vw,48px); }
.feature-copy p { color: var(--muted); }
.check-list { display: grid; gap: 10px; padding: 0; list-style: none; margin: 22px 0; }
.check-list li { position: relative; padding-left: 28px; color: var(--ink); }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: 1px; color: var(--brand); font-weight: 900; }
.text-link { color: var(--brand); font-weight: 700; text-decoration: none; }
.text-link:hover { text-decoration: underline; }
.triple-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; }
.service-card { padding: 26px; }
.service-card img { width: 100%; height: 210px; object-fit: contain; margin-bottom: 18px; border-radius: 18px; background: #F2F7FF; }
.service-card h3 { font-size: 23px; }
.service-card p { color: var(--muted); }
.security-panel { background: linear-gradient(135deg,#11182F,#16213E 54%,#202D58); color: #EEF2FF; border-radius: 34px; padding: 42px; box-shadow: var(--shadow); }
.security-panel h2, .security-panel h3 { color: #fff; }
.security-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; align-items: center; }
.security-images { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.security-images img { width: 100%; height: 250px; object-fit: contain; border-radius: 22px; background: rgba(255,255,255,.06); }
.security-list { color: #C9D4F2; }
.review-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.review-card { padding: 24px; }
.review-card p { margin-top: 0; color: var(--ink); }
.review-card footer { color: var(--muted); font-size: 14px; }
.faq-list { display: grid; gap: 14px; }
details { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 18px 20px; box-shadow: 0 10px 26px rgba(25,43,91,.06); }
summary { cursor: pointer; color: var(--title); font-weight: 800; }
details p { color: var(--muted); margin-bottom: 0; }
.notice { padding: 26px 30px; border-radius: 24px; background: linear-gradient(135deg,#FFF4D6,#FFF9EC); border: 1px solid rgba(255,200,87,.38); }
.notice h2 { font-size: 25px; }
.notice p { margin-bottom: 0; color: #6E5A2C; }
.cta { padding: 58px 0 80px; }
.cta-box { position: relative; overflow: hidden; border-radius: 34px; padding: 48px; background: linear-gradient(135deg,#5B6CFF,#7A5CFF 48%,#00B6DA); color: #fff; box-shadow: 0 26px 60px rgba(91,108,255,.26); display: flex; align-items: center; justify-content: space-between; gap: 34px; }
.cta-box::after { content: ""; position: absolute; right: -70px; top: -80px; width: 260px; height: 260px; border-radius: 50%; background: rgba(255,255,255,.12); }
.cta-box h2 { color: #fff; font-size: clamp(30px,4vw,48px); margin-bottom: 8px; }
.cta-box p { margin: 0; max-width: 720px; color: #EEF2FF; }
.cta-box .secondary-btn { position: relative; z-index: 1; flex: 0 0 auto; }
.inner-hero { padding: 68px 0; background: radial-gradient(circle at 80% 20%,rgba(0,212,255,.18),transparent 34%), linear-gradient(145deg,#F8F4FF,#EAF7FF); }
.inner-hero-grid { display: grid; grid-template-columns: 1fr .82fr; gap: 46px; align-items: center; }
.inner-hero h1 { font-size: clamp(40px,6vw,68px); margin-bottom: 18px; }
.inner-hero p { color: var(--muted); font-size: 18px; }
.inner-hero img { width: 100%; max-height: 480px; object-fit: contain; filter: drop-shadow(0 24px 34px rgba(25,43,91,.18)); }
.info-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.info-card { padding: 24px; }
.info-card .number { display: inline-flex; width: 38px; height: 38px; align-items: center; justify-content: center; border-radius: 13px; color: #fff; background: linear-gradient(135deg,var(--brand),var(--cyan)); font-weight: 900; margin-bottom: 14px; }
.info-card h3 { margin-bottom: 8px; }
.info-card p { color: var(--muted); margin: 0; }
.article-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 28px; align-items: start; }
.article-card { padding: 34px; }
.article-card h2 { font-size: 32px; }
.article-card p { color: var(--muted); }
.side-card { position: sticky; top: 96px; overflow: hidden; }
.side-card img { width: 100%; max-height: 360px; object-fit: contain; background: #EFF8FF; }
.side-card .card-body { padding: 26px; }
.quote { margin: 0; padding: 28px; border-radius: 22px; background: #F1F3FF; color: var(--title); font-size: 18px; border-left: 5px solid var(--brand); }
.steps { counter-reset: step; display: grid; gap: 14px; }
.step { counter-increment: step; padding: 20px 22px 20px 70px; position: relative; border-radius: 18px; background: #fff; border: 1px solid var(--line); }
.step::before { content: counter(step); position: absolute; left: 20px; top: 20px; width: 34px; height: 34px; display: grid; place-items: center; border-radius: 12px; color: #fff; background: var(--brand); font-weight: 900; }
.step strong { color: var(--title); }
.page-faq { margin-top: 30px; }
.site-footer { background: var(--footer); color: #EEF2FF; padding: 62px 0 0; }
.footer-inner { width: min(1180px,calc(100% - 40px)); margin: 0 auto; display: grid; grid-template-columns: 1.2fr 2fr; gap: 54px; }
.footer-brand img { width: 120px; }
.footer-brand p { color: #AEB9D7; max-width: 430px; }
.footer-links { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; }
.footer-links h2 { color: #fff; font-size: 16px; margin-bottom: 14px; }
.footer-links a { display: block; color: #AEB9D7; text-decoration: none; margin: 9px 0; font-size: 14px; }
.footer-links a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.09); margin-top: 40px; padding: 20px; text-align: center; color: #8995B5; font-size: 13px; }
.mobile-bottom-nav { display: none; }
@media (max-width: 980px) {
    .nav-core { display: none; }
    .mobile-menu-button { display: inline-flex; }
    .desktop-menu-button { display: none; }
    .site-logo { justify-content: center; min-width: 90px; }
    .site-logo img { width: 94px; }
    .header-inner { gap: 12px; }
    .hero-grid, .inner-hero-grid, .feature-row, .feature-row.reverse, .article-grid, .security-grid { grid-template-columns: 1fr; }
    .feature-row.reverse .feature-image { order: 0; }
    .hero { padding-top: 56px; }
    .hero-visual img { max-height: 500px; }
    .highlight-grid { grid-template-columns: 1fr 1fr; }
    .triple-grid, .review-grid, .info-grid { grid-template-columns: 1fr 1fr; }
    .side-card { position: static; }
    .footer-inner { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
    body { padding-bottom: 68px; }
    .container, .narrow { width: min(100% - 28px,1180px); }
    .header-inner { width: calc(100% - 18px); min-height: 64px; }
    .compact-btn { min-height: 38px; padding: 0 13px; font-size: 13px; }
    .menu-button { width: 38px; height: 38px; }
    .hero, .inner-hero { padding: 46px 0; }
    .hero-grid, .inner-hero-grid { gap: 30px; }
    h1 { font-size: 47px; }
    .hero-copy, .inner-hero p { font-size: 16px; }
    .section { padding: 56px 0; }
    .section-head { display: block; }
    .split, .highlight-grid, .triple-grid, .review-grid, .info-grid, .footer-links { grid-template-columns: 1fr; }
    .security-panel, .cta-box, .article-card { padding: 28px 22px; }
    .security-images img { height: 170px; }
    .cta-box { display: block; }
    .cta-box .secondary-btn { margin-top: 22px; }
    .media-card img { height: 230px; }
    .drawer-nav { grid-template-columns: 1fr; }
    .mobile-bottom-nav { position: fixed; z-index: 9000; left: 10px; right: 10px; bottom: max(8px,env(safe-area-inset-bottom)); height: 58px; padding: 6px 8px; border-radius: 20px; background: rgba(11,16,36,.96); box-shadow: 0 12px 32px rgba(5,12,38,.28); display: grid; grid-template-columns: repeat(4,1fr); }
    .mobile-bottom-nav a { color: #AEB9D7; text-decoration: none; display: flex; flex-direction: column; align-items: center; justify-content: center; font-size: 11px; line-height: 1.2; border-radius: 14px; }
    .mobile-bottom-nav a span { font-size: 18px; margin-bottom: 2px; }
    .mobile-bottom-nav a.active { color: #fff; background: rgba(91,108,255,.34); }
}