:root {
  --bg: #F5F7FF;
  --nav: rgba(12,18,40,0.94);
  --title: #131A35;
  --brand: #5B6CFF;
  --deep: #16213E;
  --cyan: #00D4FF;
  --gold: #FFC857;
  --rose: #D94F70;
  --violet: #7A5CFF;
  --text: #1F2740;
  --muted: #66708A;
  --soft: #9AA4BA;
  --card: #FFFFFF;
  --border: rgba(91,108,255,0.18);
  --shadow: 0 20px 46px rgba(25,43,91,0.14);
  --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(--text); 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: inherit; }
img { display: block; max-width: 100%; height: auto; object-fit: contain; }
button, input, textarea { font: inherit; }
.site-main { min-height: 70vh; }
.section-shell { width: min(1200px, calc(100% - 40px)); margin: 0 auto; }
.site-header { position: sticky; top: 0; width: 100%; z-index: 9999; background: var(--nav); backdrop-filter: blur(12px); box-shadow: 0 8px 26px rgba(25,43,91,0.16); }
.header-inner { width: min(1280px, calc(100% - 32px)); margin: 0 auto; min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.site-logo { display: inline-flex; align-items: center; gap: 10px; color: #fff; text-decoration: none; white-space: nowrap; }
.site-logo img { width: auto; max-height: 44px; }
.site-logo strong { font-size: 19px; letter-spacing: .04em; }
.nav-core { display: flex; align-items: center; justify-content: center; gap: 8px; margin-left: auto; }
.nav-core a { color: #EEF2FF; text-decoration: none; border-radius: 999px; padding: 8px 12px; font-size: 15px; transition: .2s ease; }
.nav-core a:hover, .nav-core a.active { color: #fff; background: rgba(0,212,255,0.16); }
.header-actions { display: flex; align-items: center; gap: 10px; }
.main-btn, .ghost-btn { display: inline-flex; align-items: center; justify-content: center; 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: var(--gradient); color: #fff; box-shadow: 0 14px 32px rgba(91,108,255,0.22); }
.main-btn:hover, .ghost-btn:hover { transform: translateY(-2px); }
.main-btn.compact { min-height: 40px; padding: 0 18px; font-size: 14px; }
.ghost-btn { border: 1px solid rgba(91,108,255,.28); color: var(--brand); background: rgba(255,255,255,.82); }
.menu-toggle { width: 42px; height: 42px; border: 0; border-radius: 50%; background: rgba(255,255,255,.1); cursor: pointer; display: inline-grid; place-content: center; gap: 4px; }
.menu-toggle span { display: block; width: 18px; height: 2px; background: #fff; border-radius: 10px; }
.mobile-only { display: none; }
.drawer-mask { position: fixed; inset: 0; z-index: 10000; background: rgba(5,9,23,.58); opacity: 0; visibility: hidden; transition: .25s ease; }
.site-drawer { position: fixed; top: 0; right: 0; z-index: 10001; width: min(390px, 88vw); height: 100vh; background: #fff; padding: 24px; transform: translateX(105%); transition: transform .28s ease; overflow-y: auto; box-shadow: -24px 0 70px rgba(8,15,40,.25); }
.drawer-open .drawer-mask { opacity: 1; visibility: visible; }
.drawer-open .site-drawer { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.drawer-brand { display: inline-flex; align-items: center; gap: 10px; color: var(--title); text-decoration: none; font-weight: 800; font-size: 19px; }
.drawer-brand img { max-height: 42px; }
.drawer-close { width: 42px; height: 42px; border: 0; border-radius: 50%; background: #EEF1FF; color: var(--title); cursor: pointer; font-size: 28px; line-height: 1; }
.drawer-intro { color: var(--muted); font-size: 14px; margin: 20px 0; }
.drawer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.drawer-nav a { text-decoration: none; padding: 12px 14px; border-radius: 14px; background: #F7F8FF; color: var(--title); border: 1px solid rgba(91,108,255,.1); }
.drawer-nav a:hover { color: var(--brand); background: #EFF2FF; }
.drawer-note { margin-top: 20px; padding: 16px; border-radius: 16px; background: #FFF8E5; color: #6F5718; font-size: 13px; }
.home-hero { position: relative; overflow: hidden; padding: 82px 0 68px; background: radial-gradient(circle at 20% 20%, rgba(122,92,255,.15), transparent 34%), radial-gradient(circle at 85% 28%, rgba(0,212,255,.16), transparent 30%), linear-gradient(145deg, #F8F5FF, #EDF9FF); }
.hero-glow { position: absolute; border-radius: 50%; filter: blur(5px); opacity: .6; pointer-events: none; }
.glow-one { width: 260px; height: 260px; background: rgba(255,200,87,.23); left: -80px; bottom: -100px; }
.glow-two { width: 220px; height: 220px; background: rgba(217,79,112,.14); right: -60px; top: 70px; }
.hero-grid { position: relative; display: grid; grid-template-columns: 1.02fr .98fr; align-items: center; gap: 64px; }
.hero-copy h1 { color: var(--title); font-size: clamp(54px, 8vw, 94px); line-height: 1; margin: 18px 0 18px; letter-spacing: -.05em; }
.hero-copy h2 { color: var(--deep); font-size: clamp(25px, 3vw, 40px); line-height: 1.25; margin: 0 0 22px; }
.hero-copy p { color: var(--muted); font-size: 17px; max-width: 680px; }
.hero-badge, .section-kicker, .label { display: inline-flex; align-items: center; gap: 8px; color: var(--violet); font-size: 13px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.hero-badge { padding: 7px 13px; border-radius: 999px; background: rgba(91,108,255,.1); letter-spacing: .06em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.hero-points { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.hero-points span { padding: 7px 12px; border-radius: 999px; background: rgba(255,255,255,.72); color: var(--muted); font-size: 13px; border: 1px solid rgba(91,108,255,.12); }
.hero-visual { position: relative; }
.hero-visual > img { width: 100%; max-height: 590px; }
.floating-card { position: absolute; min-width: 150px; padding: 13px 16px; border-radius: 16px; background: rgba(255,255,255,.9); border: 1px solid rgba(91,108,255,.16); box-shadow: var(--shadow); backdrop-filter: blur(12px); }
.floating-card b, .floating-card small { display: block; }
.floating-card b { color: var(--title); }
.floating-card small { color: var(--muted); margin-top: 2px; }
.card-a { left: -34px; bottom: 18%; }
.card-b { right: -18px; top: 18%; }
.service-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: -24px; position: relative; z-index: 4; }
.service-strip article { display: flex; gap: 12px; padding: 20px; border-radius: 20px; background: #fff; border: 1px solid var(--border); box-shadow: var(--shadow); }
.service-strip article > span { width: 36px; height: 36px; flex: 0 0 auto; display: grid; place-items: center; border-radius: 12px; background: #EFF2FF; color: var(--brand); font-weight: 800; }
.service-strip h2 { margin: 0 0 5px; color: var(--title); font-size: 17px; }
.service-strip p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.65; }
.section-heading { max-width: 760px; margin-bottom: 28px; }
.section-heading h2, .split-copy h2, .security-zone h2, .responsible-banner h2, .about-strip h2, .prose-intro h2, .review-faq-grid h2 { color: var(--title); font-size: clamp(28px, 4vw, 44px); line-height: 1.24; margin: 10px 0 12px; }
.section-heading p, .split-copy p, .prose-intro p { color: var(--muted); }
.channel-wrap, .brand-feature, .media-showcase, .dual-grid, .triple-grid, .security-zone, .reviews-section, .faq-section, .responsible-banner, .about-strip, .prose-intro, .feature-grid, .split-panel, .review-faq-grid, .safety-banner, .faq-page { margin-top: 96px; }
.channel-pills { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
.channel-pills a { display: block; padding: 17px; border-radius: 18px; background: rgba(255,255,255,.78); border: 1px solid rgba(91,108,255,.14); text-decoration: none; transition: .2s ease; }
.channel-pills a:hover { background: #fff; transform: translateY(-3px); box-shadow: 0 16px 34px rgba(25,43,91,.1); }
.channel-pills strong, .channel-pills span { display: block; }
.channel-pills strong { color: var(--title); margin-bottom: 5px; }
.channel-pills span { color: var(--muted); font-size: 12px; line-height: 1.55; }
.split-media { display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: 70px; padding: 56px; border-radius: 34px; background: linear-gradient(135deg, #11182F, #1B2752); color: #fff; box-shadow: var(--shadow); }
.media-frame { border-radius: 26px; background: linear-gradient(145deg, rgba(255,255,255,.08), rgba(0,212,255,.1)); padding: 22px; }
.split-media .split-copy h2, .split-media .split-copy p { color: #fff; }
.split-media .split-copy p { opacity: .78; }
.media-showcase .showcase-grid { display: grid; grid-template-columns: 1.4fr .8fr; gap: 20px; }
.zone-card, .info-card, .review-card, .mini-feature, .feature-panel, .step-list, .faq-list details { background: #fff; border: 1px solid var(--border); box-shadow: var(--shadow); border-radius: 22px; }
.zone-card { overflow: hidden; }
.zone-card img { width: 100%; max-height: 290px; padding: 18px; }
.zone-card > div { padding: 24px; }
.zone-card h3 { color: var(--title); font-size: 23px; margin: 7px 0 10px; }
.zone-card p { color: var(--muted); margin: 0 0 12px; }
.zone-card.large { grid-row: span 2; display: grid; grid-template-rows: auto 1fr; }
.zone-card.large img { max-height: 370px; }
.text-link { color: var(--brand); text-decoration: none; font-weight: 700; }
.dual-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.feature-panel { display: grid; grid-template-columns: .88fr 1.12fr; overflow: hidden; }
.feature-panel img { width: 100%; height: 100%; max-height: 480px; padding: 20px; background: linear-gradient(145deg, #EEF1FF, #EEFBFF); }
.feature-panel > div { padding: 32px; }
.feature-panel h2, .mini-feature h2 { color: var(--title); margin: 8px 0 12px; line-height: 1.25; }
.feature-panel p, .feature-panel li, .mini-feature p { color: var(--muted); }
.feature-panel ul { padding-left: 20px; }
.feature-panel.reverse { grid-template-columns: 1.05fr .95fr; }
.triple-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.mini-feature { overflow: hidden; }
.mini-feature img { width: 100%; max-height: 220px; padding: 16px; background: #F1F5FF; }
.mini-feature > div { padding: 24px; }
.mini-feature a { color: var(--brand); text-decoration: none; font-weight: 700; }
.security-zone { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.security-zone article { display: grid; grid-template-columns: .75fr 1.25fr; gap: 24px; align-items: center; padding: 30px; border-radius: 26px; background: linear-gradient(145deg, #F0F3FF, #fff); border: 1px solid var(--border); }
.security-zone article:nth-child(2) { background: linear-gradient(145deg, #EAFBFF, #fff); }
.security-zone h2 { font-size: 26px; }
.security-zone p { color: var(--muted); }
.review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.review-card { margin: 0; padding: 24px; }
.review-card p { color: var(--text); margin: 0; }
.review-card footer { color: var(--muted); font-size: 13px; margin-top: 16px; }
.faq-list { display: grid; gap: 12px; }
.faq-list.two-col { grid-template-columns: 1fr 1fr; }
.faq-list details { padding: 0 20px; box-shadow: none; }
.faq-list summary { cursor: pointer; color: var(--title); font-weight: 800; padding: 18px 28px 18px 0; position: relative; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary:after { content: '+'; position: absolute; right: 0; top: 15px; color: var(--brand); font-size: 22px; }
.faq-list details[open] summary:after { content: '−'; }
.faq-list details p { color: var(--muted); margin: 0 0 18px; }
.center-link { text-align: center; margin-top: 24px; }
.responsible-banner { display: flex; align-items: center; justify-content: space-between; gap: 34px; padding: 42px; border-radius: 28px; background: linear-gradient(135deg, #FFF4D6, #F1ECFF 55%, #EAFBFF); }
.responsible-banner h2 { font-size: 30px; }
.responsible-banner p { color: var(--muted); margin-bottom: 0; }
.responsible-banner .main-btn { flex: 0 0 auto; }
.responsible-art { width: 180px; max-height: 180px; flex: 0 0 auto; }
.about-strip { display: grid; grid-template-columns: .7fr 1.3fr; align-items: center; gap: 36px; padding-bottom: 96px; }
.about-strip img { max-height: 330px; }
.about-strip p { color: var(--muted); }
.page-hero { display: grid; grid-template-columns: 1.1fr .9fr; align-items: center; gap: 60px; padding-top: 78px; padding-bottom: 60px; }
.page-hero h1 { color: var(--title); font-size: clamp(40px, 6vw, 68px); line-height: 1.12; letter-spacing: -.03em; margin: 14px 0 18px; }
.page-hero p { color: var(--muted); font-size: 17px; max-width: 720px; }
.page-hero-visual { padding: 28px; border-radius: 32px; background: radial-gradient(circle at 75% 20%, rgba(0,212,255,.2), transparent 32%), linear-gradient(145deg, #EEEFFF, #F7FCFF); border: 1px solid var(--border); }
.page-hero-visual img { width: 100%; max-height: 510px; }
.prose-intro { display: grid; grid-template-columns: .65fr 1.35fr; gap: 70px; align-items: start; }
.prose-columns { columns: 2; column-gap: 34px; }
.prose-columns p { break-inside: avoid; margin-top: 0; }
.feature-grid { display: grid; gap: 20px; }
.feature-grid.three { grid-template-columns: repeat(3, 1fr); }
.info-card { padding: 28px; }
.feature-index { display: inline-grid; place-items: center; width: 44px; height: 44px; border-radius: 14px; background: #EEF1FF; color: var(--brand); font-weight: 900; }
.info-card h2 { color: var(--title); font-size: 23px; margin: 18px 0 8px; }
.info-card p { color: var(--muted); margin: 0; }
.split-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.step-list { padding: 12px 26px; }
.step-item { display: grid; grid-template-columns: 54px 1fr; gap: 18px; padding: 22px 0; border-bottom: 1px solid rgba(91,108,255,.12); }
.step-item:last-child { border-bottom: 0; }
.step-item > strong { color: var(--cyan); font-size: 22px; }
.step-item h3 { color: var(--title); margin: 0 0 4px; }
.step-item p { color: var(--muted); margin: 0; font-size: 14px; }
.review-faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 42px; align-items: start; }
.review-stack { display: grid; gap: 14px; }
.safety-banner { display: flex; align-items: center; justify-content: space-between; gap: 36px; padding: 42px; border-radius: 28px; background: #11182F; color: #fff; margin-bottom: 96px; }
.safety-banner h2 { color: #fff; margin: 8px 0 10px; font-size: 30px; }
.safety-banner p { color: rgba(238,242,255,.72); margin: 0; }
.safety-links { display: flex; flex-wrap: wrap; gap: 10px; flex: 0 0 260px; }
.safety-links a { color: #fff; text-decoration: none; padding: 9px 13px; border-radius: 999px; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.12); }
.site-footer { background: #0B1024; color: #EEF2FF; padding: 66px 0 20px; }
.footer-inner { width: min(1200px, calc(100% - 40px)); margin: 0 auto; display: grid; grid-template-columns: 1.7fr repeat(3, 1fr); gap: 54px; }
.footer-brand p { color: rgba(238,242,255,.64); max-width: 430px; }
.footer-logo { margin-bottom: 16px; }
.footer-links { display: grid; align-content: start; gap: 8px; }
.footer-links h2 { color: #fff; font-size: 16px; margin: 0 0 10px; }
.footer-links a { color: rgba(238,242,255,.7); text-decoration: none; font-size: 14px; }
.footer-links a:hover { color: #fff; }
.footer-bottom { width: min(1200px, calc(100% - 40px)); margin: 42px auto 0; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.1); display: flex; justify-content: space-between; gap: 20px; color: rgba(238,242,255,.56); font-size: 13px; }
.mobile-bottom-nav { display: none; }
@media (max-width: 1100px) {
  .nav-core { display: none; }
  .hero-grid, .page-hero { gap: 34px; }
  .service-strip { grid-template-columns: 1fr 1fr; }
  .channel-pills { grid-template-columns: repeat(3, 1fr); }
  .dual-grid, .security-zone { grid-template-columns: 1fr; }
  .feature-panel { grid-template-columns: .75fr 1.25fr; }
}
@media (max-width: 820px) {
  body { padding-bottom: 70px; }
  .header-inner { min-height: 64px; width: calc(100% - 20px); gap: 10px; }
  .mobile-only { display: inline-grid; }
  .desktop-menu { display: none; }
  .site-logo strong { display: none; }
  .site-logo img { max-height: 38px; }
  .header-actions .compact { min-height: 36px; padding: 0 13px; font-size: 12px; }
  .home-hero { padding-top: 54px; }
  .hero-grid, .page-hero, .split-media, .prose-intro, .split-panel, .review-faq-grid { grid-template-columns: 1fr; }
  .hero-visual { max-width: 620px; margin: 0 auto; }
  .card-a { left: 2%; }
  .card-b { right: 1%; }
  .channel-pills { grid-template-columns: 1fr 1fr; }
  .split-media { padding: 28px; gap: 30px; }
  .media-showcase .showcase-grid { grid-template-columns: 1fr 1fr; }
  .zone-card.large { grid-column: 1 / -1; grid-row: auto; }
  .triple-grid, .review-grid, .feature-grid.three { grid-template-columns: 1fr 1fr; }
  .faq-list.two-col { grid-template-columns: 1fr; }
  .prose-columns { columns: 1; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .mobile-bottom-nav { position: fixed; left: 0; right: 0; bottom: 0; z-index: 9998; display: grid; grid-template-columns: repeat(4, 1fr); background: rgba(11,16,36,.96); backdrop-filter: blur(14px); padding: 7px 8px calc(7px + env(safe-area-inset-bottom)); box-shadow: 0 -10px 30px rgba(11,16,36,.16); }
  .mobile-bottom-nav a { display: grid; place-items: center; gap: 1px; color: #EEF2FF; text-decoration: none; font-size: 11px; }
  .mobile-bottom-nav span { font-size: 18px; }
  .safety-banner { margin-bottom: 76px; }
}
@media (max-width: 560px) {
  .section-shell { width: min(100% - 24px, 1200px); }
  .home-hero { padding-top: 42px; }
  .hero-copy h1 { font-size: 54px; }
  .hero-copy h2 { font-size: 26px; }
  .hero-copy p, .page-hero p { font-size: 15px; }
  .hero-actions { display: grid; grid-template-columns: 1fr 1fr; }
  .main-btn, .ghost-btn { padding: 0 15px; min-height: 44px; font-size: 14px; }
  .floating-card { position: static; display: inline-block; min-width: auto; margin: 8px 4px 0 0; }
  .service-strip { grid-template-columns: 1fr; margin-top: 18px; }
  .channel-wrap, .brand-feature, .media-showcase, .dual-grid, .triple-grid, .security-zone, .reviews-section, .faq-section, .responsible-banner, .about-strip, .prose-intro, .feature-grid, .split-panel, .review-faq-grid, .safety-banner, .faq-page { margin-top: 68px; }
  .channel-pills, .media-showcase .showcase-grid, .triple-grid, .review-grid, .feature-grid.three { grid-template-columns: 1fr; }
  .feature-panel, .feature-panel.reverse, .security-zone article { grid-template-columns: 1fr; }
  .feature-panel img { max-height: 330px; }
  .responsible-banner, .safety-banner { align-items: flex-start; flex-direction: column; padding: 28px; }
  .safety-links { flex: 0 0 auto; }
  .about-strip { grid-template-columns: 1fr; padding-bottom: 70px; }
  .page-hero { padding-top: 48px; padding-bottom: 24px; }
  .page-hero h1 { font-size: 40px; }
  .page-hero-visual { padding: 18px; }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; }
  .drawer-nav { grid-template-columns: 1fr 1fr; }
}