:root {
  --bg: #F5F7FF;
  --ink: #1F2740;
  --title: #131A35;
  --muted: #66708A;
  --soft: #9AA4BA;
  --primary: #5B6CFF;
  --primary-2: #7A5CFF;
  --cyan: #00D4FF;
  --gold: #FFC857;
  --rose: #D94F70;
  --deep: #16213E;
  --nav: rgba(12,18,40,.94);
  --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%);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: "Microsoft YaHei", "PingFang SC", 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; }
button, a { -webkit-tap-highlight-color: transparent; }
.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(1280px, calc(100% - 36px)); min-height: 72px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 22px; }
.site-logo, .drawer-brand, .footer-logo { display: inline-flex; align-items: center; gap: 10px; color: #fff; }
.site-logo img { max-height: 44px; width: auto; display: block; }
.site-logo strong { font-size: 20px; letter-spacing: .5px; }
.nav-core { display: flex; align-items: center; gap: 8px; white-space: nowrap; }
.nav-core a { color: #EEF2FF; border-radius: 999px; padding: 8px 12px; 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, .outline-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 24px; 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,.3); }
.main-btn.compact { min-height: 40px; padding: 0 18px; font-size: 14px; }
.outline-btn { color: var(--primary); border: 1px solid rgba(91,108,255,.35); background: rgba(255,255,255,.8); }
.menu-toggle { width: 42px; height: 42px; border: 0; border-radius: 50%; background: rgba(255,255,255,.1); display: inline-flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; cursor: pointer; }
.menu-toggle span { width: 18px; height: 2px; border-radius: 2px; background: #fff; }
.mobile-menu-toggle { display: none; }
.drawer-overlay { position: fixed; inset: 0; background: rgba(5,8,20,.58); opacity: 0; visibility: hidden; z-index: 10000; transition: .25s ease; }
.site-drawer { position: fixed; top: 0; right: 0; width: min(390px, 92vw); height: 100dvh; padding: 24px; background: #11182F; color: #EEF2FF; transform: translateX(105%); z-index: 10001; overflow-y: auto; transition: transform .3s ease; box-shadow: -24px 0 60px rgba(0,0,0,.28); }
.drawer-open .drawer-overlay { 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 img, .footer-logo img { width: 42px; max-height: 42px; object-fit: contain; }
.drawer-brand span { font-weight: 800; font-size: 20px; }
.drawer-close { border: 0; background: rgba(255,255,255,.1); color: #fff; width: 42px; height: 42px; border-radius: 50%; font-size: 26px; cursor: pointer; }
.drawer-intro { color: #AEB8D5; margin: 18px 0; }
.drawer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.drawer-nav a { display: flex; justify-content: space-between; align-items: center; color: #EEF2FF; background: rgba(255,255,255,.055); padding: 12px 14px; border-radius: 14px; }
.drawer-nav a:hover, .drawer-nav a.active { background: rgba(91,108,255,.28); color: #fff; }
.drawer-safe-note { margin-top: 20px; padding: 16px; border-radius: 18px; background: rgba(0,212,255,.08); color: #C9D6F5; font-size: 13px; }
.site-main { min-height: 65vh; }
.shell { width: min(1200px, calc(100% - 36px)); margin: 0 auto; }
.section { padding: 84px 0; }
.section.tight { padding: 56px 0; }
.section-kicker { display: inline-flex; align-items: center; gap: 8px; color: var(--primary); font-size: 13px; font-weight: 800; letter-spacing: 1px; text-transform: uppercase; }
.section-kicker::before { content: ""; width: 28px; height: 3px; border-radius: 3px; background: linear-gradient(90deg, var(--gold), var(--cyan)); }
.section-title, h1, h2, h3 { color: var(--title); line-height: 1.25; }
.section-title { font-size: clamp(28px, 4vw, 44px); margin: 12px 0 18px; }
.section-lead { max-width: 760px; color: var(--muted); font-size: 17px; margin: 0; }
.hero { position: relative; overflow: hidden; background: radial-gradient(circle at 10% 10%, rgba(122,92,255,.2), transparent 34%), radial-gradient(circle at 90% 20%, rgba(0,212,255,.18), transparent 32%), linear-gradient(135deg,#F6F2FF 0%,#EAF7FF 55%,#FFF3FA 100%); }
.hero::before, .hero::after { content: ""; position: absolute; border-radius: 50%; filter: blur(2px); pointer-events: none; }
.hero::before { width: 260px; height: 260px; right: -80px; top: 60px; background: rgba(91,108,255,.08); }
.hero::after { width: 160px; height: 160px; left: 7%; bottom: -60px; background: rgba(217,79,112,.08); }
.hero-inner { width: min(1240px, calc(100% - 36px)); margin: 0 auto; min-height: 680px; display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 54px; padding: 72px 0 82px; position: relative; z-index: 1; }
.hero-copy h1 { font-size: clamp(54px, 8vw, 92px); margin: 0 0 8px; letter-spacing: -3px; background: linear-gradient(135deg,#131A35 10%,#5B6CFF 52%,#D94F70 100%); -webkit-background-clip: text; color: transparent; }
.hero-copy h2 { font-size: clamp(26px, 4vw, 42px); margin: 0 0 22px; }
.hero-copy p { color: #4D5873; font-size: 17px; max-width: 680px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 24px; }
.hero-points { display: flex; flex-wrap: wrap; gap: 10px; }
.hero-points span { background: rgba(255,255,255,.78); border: 1px solid var(--line); border-radius: 999px; padding: 8px 14px; font-weight: 700; color: var(--deep); box-shadow: 0 10px 24px rgba(25,43,91,.08); }
.hero-visual { position: relative; }
.hero-visual::before { content: ""; position: absolute; inset: 8% 8%; border-radius: 50%; background: radial-gradient(circle, rgba(91,108,255,.25), transparent 65%); filter: blur(24px); }
.hero-visual img { position: relative; width: 100%; max-height: 580px; object-fit: contain; filter: drop-shadow(0 28px 42px rgba(29,39,83,.22)); }
.highlight-strip { margin-top: -34px; position: relative; z-index: 3; }
.highlight-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 14px; }
.highlight-item { background: rgba(255,255,255,.94); border: 1px solid var(--line); border-radius: 20px; padding: 22px; box-shadow: var(--shadow); }
.highlight-item b { display: block; color: var(--title); margin-bottom: 8px; font-size: 17px; }
.highlight-item p { margin: 0; color: var(--muted); font-size: 14px; }
.capsule-wrap { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.capsule-link { flex: 1 1 210px; padding: 15px 17px; border: 1px solid var(--line); border-radius: 999px; background: #fff; box-shadow: 0 12px 28px rgba(25,43,91,.07); }
.capsule-link strong { display: block; color: var(--title); }
.capsule-link small { color: var(--muted); }
.card, .zone-card, .info-card, .review-card { background: var(--card); border: 1px solid var(--line); box-shadow: var(--shadow); border-radius: 22px; }
.split-feature { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: center; }
.split-feature.reverse .visual { order: 2; }
.visual img, .content-img, .zone-card img, .app-section img { width: 100%; max-height: 470px; object-fit: contain; display: block; }
.feature-copy { padding: 30px; }
.feature-copy h2 { font-size: clamp(30px,4vw,46px); margin: 8px 0 18px; }
.feature-copy p { color: var(--muted); }
.feature-list { display: grid; gap: 10px; margin: 22px 0; }
.feature-list div { display: flex; gap: 10px; align-items: flex-start; }
.feature-list i { width: 24px; height: 24px; flex: 0 0 24px; border-radius: 50%; background: linear-gradient(135deg,rgba(91,108,255,.15),rgba(0,212,255,.2)); color: var(--primary); font-style: normal; text-align: center; line-height: 24px; font-weight: 900; }
.grid-2 { display: grid; grid-template-columns: repeat(2,1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; }
.zone-card { overflow: hidden; }
.zone-card img { height: 240px; padding: 16px; background: linear-gradient(135deg,#EEF3FF,#F6FBFF); }
.zone-body { padding: 26px; }
.zone-body h3 { font-size: 26px; margin: 0 0 12px; }
.zone-body p { color: var(--muted); }
.mini-points { margin: 16px 0; padding: 0; list-style: none; display: grid; gap: 8px; }
.mini-points li { position: relative; padding-left: 18px; color: #4E5870; }
.mini-points li::before { content: ""; position: absolute; width: 7px; height: 7px; border-radius: 50%; left: 0; top: .72em; background: var(--cyan); }
.text-link { font-weight: 800; }
.dark-panel { background: linear-gradient(135deg,#11182F,#182348); color: #EEF2FF; border-radius: 32px; padding: 48px; box-shadow: 0 24px 58px rgba(10,18,44,.24); }
.dark-panel h2, .dark-panel h3 { color: #fff; }
.dark-panel p { color: #C3CCE4; }
.security-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.security-card { background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.12); border-radius: 22px; padding: 24px; }
.security-card img { width: 100%; height: 250px; object-fit: contain; }
.review-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; margin-top: 30px; }
.review-card { padding: 24px; }
.review-card p { color: #535F78; margin-top: 0; }
.review-card strong { color: var(--title); }
.faq-list { display: grid; gap: 14px; margin-top: 28px; }
details { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 18px 20px; box-shadow: 0 10px 26px rgba(25,43,91,.07); }
summary { cursor: pointer; font-weight: 800; color: var(--title); }
details p { color: var(--muted); margin: 12px 0 0; }
.notice-panel { background: linear-gradient(135deg,#FFF4D6,#EFF8FF); border: 1px solid rgba(255,200,87,.38); border-radius: 28px; padding: 34px; }
.notice-panel h2 { margin-top: 0; }
.inner-hero { background: radial-gradient(circle at 85% 20%,rgba(0,212,255,.14),transparent 32%), radial-gradient(circle at 10% 10%,rgba(122,92,255,.16),transparent 35%), linear-gradient(135deg,#F6F2FF,#EBF9FF); }
.inner-hero .shell { min-height: 490px; display: grid; grid-template-columns: 1.02fr .98fr; align-items: center; gap: 42px; padding: 70px 0; }
.inner-hero h1 { font-size: clamp(40px,6vw,68px); margin: 10px 0 18px; }
.inner-hero p { color: var(--muted); font-size: 17px; }
.inner-hero img { width: 100%; max-height: 390px; object-fit: contain; filter: drop-shadow(0 24px 34px rgba(25,43,91,.16)); }
.breadcrumbs { font-size: 14px; color: var(--soft); }
.breadcrumbs a { color: var(--primary); }
.content-layout { display: grid; grid-template-columns: minmax(0,1fr) 320px; gap: 30px; align-items: start; }
.article-card { padding: 36px; }
.article-card h2 { font-size: 30px; margin: 38px 0 14px; }
.article-card h2:first-child { margin-top: 0; }
.article-card p { color: #4F5A73; margin: 0 0 18px; }
.article-card ul { padding-left: 22px; color: #4F5A73; }
.article-card li { margin: 7px 0; }
.side-stack { display: grid; gap: 18px; position: sticky; top: 96px; }
.side-card { padding: 24px; }
.side-card h3 { margin-top: 0; font-size: 20px; }
.side-card p { color: var(--muted); font-size: 14px; }
.side-card a { display: block; padding: 9px 0; border-bottom: 1px solid rgba(91,108,255,.1); font-weight: 700; }
.side-card a:last-child { border-bottom: 0; }
.steps { counter-reset: step; display: grid; gap: 14px; margin: 22px 0; }
.step { counter-increment: step; display: grid; grid-template-columns: 40px 1fr; gap: 14px; align-items: start; padding: 17px; border-radius: 16px; background: #F7F9FF; border: 1px solid rgba(91,108,255,.12); }
.step::before { content: counter(step); width: 40px; height: 40px; display: grid; place-items: center; border-radius: 50%; color: #fff; background: var(--gradient); font-weight: 800; }
.step strong { color: var(--title); display: block; }
.quote-box { margin: 28px 0; padding: 24px; border-left: 4px solid var(--primary); border-radius: 0 18px 18px 0; background: #F2F5FF; color: #4E5870; }
.faq-grid { display: grid; gap: 16px; }
.faq-item { padding: 24px; }
.faq-item h2 { font-size: 21px; margin: 0 0 10px; }
.faq-item p { color: var(--muted); margin: 0; }
.contact-cards { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; margin-top: 28px; }
.contact-card { padding: 24px; }
.contact-card h3 { margin: 0 0 10px; }
.site-footer { background: #0B1024; color: #EEF2FF; padding: 64px 0 26px; }
.footer-grid { width: min(1200px, calc(100% - 36px)); margin: 0 auto; display: grid; grid-template-columns: 1.5fr repeat(3,1fr); gap: 32px; }
.footer-grid h2 { color: #fff; font-size: 16px; margin: 0 0 14px; }
.footer-grid p { color: #AEB8D5; max-width: 420px; }
.footer-grid section > a:not(.footer-logo) { display: block; color: #C7D1EC; margin: 8px 0; }
.footer-bottom { width: min(1200px, calc(100% - 36px)); margin: 34px auto 0; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.1); display: flex; justify-content: space-between; gap: 24px; align-items: center; color: #8F9AB8; font-size: 13px; }
.footer-bottom div { display: flex; gap: 16px; }
.footer-bottom a { color: #C7D1EC; }
.mobile-bottom-nav { display: none; }
@media (max-width: 980px) {
  .nav-core { display: none; }
  .mobile-menu-toggle { display: inline-flex; }
  .site-logo strong { display: none; }
  .hero-inner, .inner-hero .shell, .split-feature, .content-layout { grid-template-columns: 1fr; }
  .hero-inner { padding-top: 54px; text-align: center; }
  .hero-copy p { margin-left: auto; margin-right: auto; }
  .hero-actions, .hero-points { justify-content: center; }
  .hero-visual img { max-height: 430px; }
  .highlight-grid, .grid-4 { grid-template-columns: repeat(2,1fr); }
  .grid-3, .review-grid, .contact-cards { grid-template-columns: 1fr 1fr; }
  .split-feature.reverse .visual { order: initial; }
  .side-stack { position: static; grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1.3fr 1fr 1fr; }
  .footer-grid section:last-child { grid-column: 2 / 4; }
}
@media (max-width: 680px) {
  body { padding-bottom: 72px; }
  .header-inner { width: calc(100% - 20px); min-height: 64px; gap: 8px; }
  .desktop-menu-toggle { display: none; }
  .site-logo img { max-height: 38px; }
  .main-btn.compact { min-height: 36px; padding: 0 14px; font-size: 13px; }
  .menu-toggle { width: 38px; height: 38px; }
  .shell, .hero-inner, .inner-hero .shell, .footer-grid, .footer-bottom { width: calc(100% - 24px); }
  .hero-inner { min-height: auto; padding: 44px 0 70px; gap: 26px; }
  .hero-copy h1 { font-size: 54px; letter-spacing: -2px; }
  .hero-copy h2 { font-size: 28px; }
  .hero-copy p { font-size: 15px; }
  .highlight-strip { margin-top: -22px; }
  .highlight-grid, .grid-2, .grid-3, .grid-4, .review-grid, .contact-cards, .security-grid, .side-stack { grid-template-columns: 1fr; }
  .section { padding: 62px 0; }
  .section.tight { padding: 42px 0; }
  .feature-copy, .article-card { padding: 24px; }
  .dark-panel { padding: 28px 20px; border-radius: 24px; }
  .zone-card img { height: 210px; }
  .inner-hero .shell { min-height: auto; padding: 52px 0; }
  .inner-hero h1 { font-size: 42px; }
  .drawer-nav { grid-template-columns: 1fr; }
  .site-drawer { padding: 20px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid section:first-child, .footer-grid section:last-child { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .mobile-bottom-nav { position: fixed; left: 0; right: 0; bottom: 0; z-index: 9000; height: 64px; padding-bottom: env(safe-area-inset-bottom); display: grid; grid-template-columns: repeat(4,1fr); background: rgba(11,16,36,.96); border-top: 1px solid rgba(255,255,255,.1); backdrop-filter: blur(10px); }
  .mobile-bottom-nav a { display: flex; flex-direction: column; align-items: center; justify-content: center; color: #AEB8D5; font-size: 11px; line-height: 1.2; }
  .mobile-bottom-nav a span { font-size: 18px; margin-bottom: 3px; }
  .mobile-bottom-nav a.active { color: #fff; background: rgba(91,108,255,.18); }
}