:root {
  --bg: #F5F7FF;
  --nav: rgba(12,18,40,.94);
  --title: #131A35;
  --brand: #5B6CFF;
  --deep: #16213E;
  --cyan: #00D4FF;
  --gold: #FFC857;
  --rose: #D94F70;
  --lavender: #7A5CFF;
  --text: #1F2740;
  --muted: #66708A;
  --soft: #9AA4BA;
  --card: #FFFFFF;
  --dark-card: #11182F;
  --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%);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-height: 100%; background: var(--bg); color: var(--text); font-family: "Microsoft YaHei", "PingFang SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; line-height: 1.75; overflow-x: hidden; }
body.menu-open { overflow: hidden; }
a { color: inherit; }
img { max-width: 100%; height: auto; }
button, a { -webkit-tap-highlight-color: transparent; }
.container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.skip-link { position: fixed; top: -100px; left: 16px; z-index: 12000; background: #fff; color: var(--title); padding: 10px 16px; border-radius: 10px; }
.skip-link:focus { top: 10px; }
.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 { max-width: 1280px; margin: 0 auto; min-height: 72px; padding: 0 24px; display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.site-logo, .drawer-brand { display: inline-flex; align-items: center; gap: 10px; color: #fff; text-decoration: none; white-space: nowrap; }
.site-logo img { width: 42px; max-height: 44px; object-fit: contain; display: block; }
.site-logo strong { font-size: 20px; letter-spacing: .02em; }
.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; 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; align-items: center; justify-content: center; min-height: 44px; padding: 10px 22px; background: var(--gradient); color: #fff; border-radius: 999px; box-shadow: 0 14px 32px rgba(91,108,255,.22); text-decoration: none; font-weight: 700; transition: transform .2s ease, box-shadow .2s ease; }
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 18px 34px rgba(91,108,255,.3); }
.secondary-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 10px 22px; border: 1px solid var(--border); color: var(--brand); background: #fff; border-radius: 999px; text-decoration: none; font-weight: 700; }
.menu-toggle { width: 44px; height: 44px; border: 1px solid rgba(255,255,255,.18); border-radius: 14px; background: rgba(255,255,255,.06); display: inline-flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; cursor: pointer; }
.menu-toggle span { display: block; width: 19px; height: 2px; background: #fff; border-radius: 2px; }
.mobile-menu-toggle { display: none; }
.drawer-overlay { position: fixed; inset: 0; background: rgba(5,8,20,.58); backdrop-filter: blur(3px); z-index: 10000; opacity: 0; visibility: hidden; transition: .25s ease; }
.drawer-overlay.is-open { opacity: 1; visibility: visible; }
.site-drawer { position: fixed; top: 0; right: 0; width: min(390px, 88vw); height: 100dvh; z-index: 10001; background: #fff; box-shadow: -24px 0 70px rgba(9,16,45,.25); transform: translateX(105%); transition: transform .28s ease; padding: 22px; overflow-y: auto; }
.site-drawer.is-open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 15px; padding-bottom: 18px; border-bottom: 1px solid var(--border); }
.drawer-brand { color: var(--title); font-weight: 800; font-size: 19px; }
.drawer-brand img { width: 40px; height: 40px; object-fit: contain; }
.drawer-close { width: 40px; height: 40px; border: 0; background: #EEF2FF; color: var(--title); border-radius: 12px; font-size: 25px; cursor: pointer; }
.drawer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; padding: 22px 0; }
.drawer-nav a { text-decoration: none; color: var(--text); background: #F7F8FF; border: 1px solid var(--border); border-radius: 14px; padding: 12px 14px; }
.drawer-nav a:hover { background: #EEF1FF; color: var(--brand); }
.drawer-note { border-radius: 20px; padding: 18px; background: linear-gradient(135deg,#EFF8FF,#F2EEFF); border: 1px solid var(--border); }
.drawer-note strong { color: var(--title); }
.drawer-note p { margin: 8px 0 0; font-size: 14px; color: var(--muted); }
.hero { position: relative; overflow: hidden; padding: 82px 0 70px; background: radial-gradient(circle at 10% 10%,rgba(0,212,255,.17),transparent 30%), radial-gradient(circle at 88% 16%,rgba(217,79,112,.14),transparent 26%), linear-gradient(135deg,#F7F1FF 0%,#ECF8FF 48%,#FFF7FC 100%); }
.hero::after { content: ""; position: absolute; width: 440px; height: 440px; right: -190px; bottom: -230px; border-radius: 50%; background: rgba(91,108,255,.11); }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.02fr .98fr; align-items: center; gap: 54px; }
.hero-copy { max-width: 650px; }
.eyebrow, .section-kicker { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 14px; color: var(--brand); font-size: 14px; font-weight: 800; letter-spacing: .08em; }
.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: 1.28; }
h1 { margin: 0 0 18px; font-size: clamp(42px, 6vw, 76px); letter-spacing: -.04em; }
.hero-subtitle { margin: 0 0 18px; font-size: clamp(22px, 3vw, 32px); color: var(--deep); font-weight: 800; }
.hero-copy p { margin: 0; color: var(--muted); font-size: 17px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.hero-points { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.hero-points span { background: rgba(255,255,255,.78); border: 1px solid var(--border); color: var(--deep); padding: 7px 12px; border-radius: 999px; font-size: 14px; }
.hero-visual { position: relative; }
.hero-visual img { width: 100%; max-height: 570px; object-fit: contain; filter: drop-shadow(0 28px 40px rgba(39,52,110,.2)); }
.floating-note { position: absolute; right: -10px; bottom: 16px; width: 220px; padding: 16px; border: 1px solid rgba(255,255,255,.8); background: rgba(255,255,255,.88); backdrop-filter: blur(12px); border-radius: 20px; box-shadow: var(--shadow); }
.floating-note strong { display: block; color: var(--title); }
.floating-note span { font-size: 13px; color: var(--muted); }
.section { padding: 78px 0; }
.section-soft { background: linear-gradient(180deg,#F2F7FF 0%,#F8F6FF 100%); }
.section-dark { background: #10172E; color: #E8EDFF; }
.section-dark h2,.section-dark h3 { color: #fff; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 30px; margin-bottom: 34px; }
.section-head h2 { margin: 0; font-size: clamp(30px, 4vw, 48px); }
.section-head p { max-width: 620px; margin: 0; color: var(--muted); }
.card,.zone-card,.info-card,.review-card { background: #fff; border: 1px solid var(--border); box-shadow: var(--shadow); border-radius: 22px; }
.card { padding: 28px; }
.card h3 { margin: 0 0 12px; font-size: 22px; }
.card p { margin: 0; color: var(--muted); }
.card .text-link { display: inline-flex; margin-top: 16px; color: var(--brand); font-weight: 700; text-decoration: none; }
.highlights { margin-top: -34px; position: relative; z-index: 2; }
.highlight-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; }
.highlight-card { padding: 24px; min-height: 176px; background: rgba(255,255,255,.96); border: 1px solid var(--border); box-shadow: var(--shadow); border-radius: 22px; }
.highlight-card strong { display: block; color: var(--title); font-size: 19px; margin-bottom: 8px; }
.highlight-card p { margin: 0; color: var(--muted); font-size: 15px; }
.channel-wrap { display: flex; flex-wrap: wrap; gap: 12px; }
.channel-pill { flex: 1 1 205px; display: block; padding: 14px 16px; border-radius: 18px; background: #fff; border: 1px solid var(--border); text-decoration: none; box-shadow: 0 10px 22px rgba(25,43,91,.08); }
.channel-pill strong { display: block; color: var(--title); }
.channel-pill span { display: block; color: var(--muted); font-size: 13px; margin-top: 3px; }
.split { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 46px; }
.split.reverse .content-visual { order: 2; }
.content-visual img,.zone-card img,.app-section img,.hero-visual img { max-width: 100%; height: auto; object-fit: contain; }
.content-visual { border-radius: 30px; padding: 22px; background: linear-gradient(135deg,#EAF7FF,#F1EDFF); border: 1px solid var(--border); }
.content-copy h2 { margin: 0 0 18px; font-size: clamp(30px,4vw,46px); }
.content-copy h3 { font-size: 24px; margin: 24px 0 10px; }
.content-copy p { color: var(--muted); margin: 0 0 16px; }
.feature-list { display: grid; gap: 12px; margin: 22px 0; padding: 0; list-style: none; }
.feature-list li { position: relative; padding-left: 28px; color: var(--text); }
.feature-list li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--brand); font-weight: 900; }
.dual-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.zone-card { overflow: hidden; }
.zone-card .zone-image { display: flex; align-items: center; justify-content: center; min-height: 260px; background: linear-gradient(145deg,#EEF8FF,#F7EEFF); padding: 20px; }
.zone-card .zone-image img { max-height: 300px; }
.zone-card .zone-body { padding: 28px; }
.zone-card h3 { margin: 0 0 12px; font-size: 28px; }
.zone-card p { color: var(--muted); margin: 0 0 14px; }
.mini-points { display: grid; gap: 8px; margin: 18px 0 0; padding: 0; list-style: none; }
.mini-points li { padding: 10px 12px; border-radius: 12px; background: #F7F8FF; color: var(--deep); }
.triple-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; }
.info-card { overflow: hidden; }
.info-card img { width: 100%; height: 210px; object-fit: contain; padding: 16px; background: linear-gradient(135deg,#EFF8FF,#F8F2FF); }
.info-card .info-body { padding: 24px; }
.info-card h3 { margin: 0 0 10px; font-size: 24px; }
.info-card p { margin: 0; color: var(--muted); }
.security-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.security-card { display: grid; grid-template-columns: 170px 1fr; gap: 24px; align-items: center; padding: 26px; border-radius: 24px; background: #fff; border: 1px solid var(--border); box-shadow: var(--shadow); }
.security-card img { width: 100%; max-height: 170px; object-fit: contain; }
.security-card h3 { margin: 0 0 10px; font-size: 24px; }
.security-card p { margin: 0; color: var(--muted); }
.review-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.review-card { padding: 24px; }
.review-card p { margin: 0 0 16px; color: var(--text); }
.review-card span { color: var(--muted); font-size: 14px; }
.faq-list { display: grid; gap: 14px; }
details { background: #fff; border: 1px solid var(--border); border-radius: 18px; padding: 18px 20px; box-shadow: 0 12px 28px rgba(25,43,91,.07); }
summary { color: var(--title); font-weight: 800; cursor: pointer; }
details p { margin: 12px 0 0; color: var(--muted); }
.notice-box { padding: 28px; border-radius: 24px; background: linear-gradient(135deg,#FFF4D6,#EFF8FF); border: 1px solid rgba(255,200,87,.45); }
.notice-box h2 { margin-top: 0; }
.notice-box p { margin-bottom: 0; color: var(--muted); }
.page-hero { padding: 68px 0 56px; background: radial-gradient(circle at 12% 0,rgba(0,212,255,.14),transparent 32%), radial-gradient(circle at 92% 10%,rgba(122,92,255,.16),transparent 28%), linear-gradient(135deg,#F8F2FF,#ECF8FF); }
.page-hero-grid { display: grid; grid-template-columns: 1fr .82fr; align-items: center; gap: 44px; }
.page-hero h1 { font-size: clamp(38px,5vw,62px); margin-bottom: 18px; }
.page-hero p { font-size: 17px; color: var(--muted); margin: 0; }
.page-hero img { width: 100%; max-height: 430px; object-fit: contain; filter: drop-shadow(0 24px 36px rgba(36,48,102,.18)); }
.breadcrumb { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; color: var(--muted); font-size: 14px; }
.breadcrumb a { color: var(--brand); text-decoration: none; }
.article-section { padding: 64px 0; }
.article-grid { display: grid; grid-template-columns: minmax(0,1.2fr) minmax(280px,.8fr); gap: 32px; align-items: start; }
.article-main { display: grid; gap: 22px; }
.article-card { background: #fff; border: 1px solid var(--border); border-radius: 24px; box-shadow: var(--shadow); padding: 30px; }
.article-card h2 { margin: 0 0 14px; font-size: 30px; }
.article-card h3 { margin: 22px 0 10px; font-size: 22px; }
.article-card p { margin: 0 0 14px; color: var(--muted); }
.article-card p:last-child { margin-bottom: 0; }
.article-side { position: sticky; top: 96px; display: grid; gap: 18px; }
.side-card { background: #fff; border: 1px solid var(--border); border-radius: 22px; padding: 24px; box-shadow: 0 16px 34px rgba(25,43,91,.1); }
.side-card h2,.side-card h3 { margin-top: 0; }
.side-card p { color: var(--muted); }
.side-card img { width: 100%; max-height: 240px; object-fit: contain; }
.steps { counter-reset: step; display: grid; gap: 14px; padding: 0; list-style: none; }
.steps li { counter-increment: step; display: grid; grid-template-columns: 42px 1fr; gap: 12px; align-items: start; }
.steps li::before { content: counter(step); display: inline-flex; align-items: center; justify-content: center; width: 42px; height: 42px; border-radius: 14px; color: #fff; background: var(--gradient); font-weight: 800; }
.quote { border-left: 4px solid var(--brand); padding: 8px 0 8px 18px; color: var(--text); }
.service-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; }
.service-item { padding: 18px; border-radius: 18px; background: #F7F8FF; border: 1px solid var(--border); }
.service-item strong { display: block; color: var(--title); margin-bottom: 6px; }
.service-item span { color: var(--muted); font-size: 14px; }
.compliance-band { background: #EAF7FF; border-top: 1px solid rgba(0,212,255,.2); }
.compliance-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; padding: 28px 0; }
.compliance-grid div { display: grid; grid-template-columns: 52px 1fr; gap: 12px; align-items: start; }
.compliance-grid span { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; border-radius: 14px; background: #fff; color: var(--brand); font-weight: 900; border: 1px solid var(--border); }
.compliance-grid p { margin: 0; color: var(--muted); font-size: 14px; }
.site-footer { background: #0B1024; color: #EEF2FF; padding: 58px 0 20px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr repeat(3,1fr); gap: 36px; }
.footer-brand a { display: inline-flex; align-items: center; gap: 10px; color: #fff; text-decoration: none; font-size: 22px; }
.footer-brand img { width: 46px; height: 46px; object-fit: contain; }
.footer-brand p { color: #AEB8D6; max-width: 380px; }
.site-footer h2 { color: #fff; font-size: 16px; margin: 0 0 14px; }
.site-footer .footer-grid > div:not(.footer-brand) a { display: block; color: #C5CDEA; text-decoration: none; margin: 8px 0; }
.site-footer a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; gap: 28px; align-items: center; margin-top: 38px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.1); color: #9AA6C8; font-size: 13px; }
.footer-bottom p { margin: 0; }
.footer-bottom div { display: flex; flex-wrap: wrap; gap: 14px; }
.footer-bottom a { color: #C5CDEA; text-decoration: none; }
.mobile-bottom-nav { display: none; }
@media (max-width: 1020px) {
  .nav-core { display: none; }
  .hero-grid,.page-hero-grid,.split,.article-grid { grid-template-columns: 1fr; }
  .hero-copy { max-width: none; }
  .hero-visual { max-width: 720px; margin: 0 auto; }
  .article-side { position: static; grid-template-columns: 1fr 1fr; }
  .highlight-grid { grid-template-columns: 1fr 1fr; }
  .triple-grid,.review-grid { grid-template-columns: 1fr 1fr; }
  .security-panel { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1.5fr 1fr 1fr; }
  .footer-grid > div:last-child { grid-column: 2 / 4; }
}
@media (max-width: 760px) {
  body { padding-bottom: calc(72px + env(safe-area-inset-bottom)); }
  .container { width: min(100% - 28px, 1180px); }
  .header-inner { min-height: 64px; padding: 0 12px; gap: 8px; }
  .mobile-menu-toggle { display: inline-flex; order: 1; }
  .site-logo { order: 2; position: absolute; left: 50%; transform: translateX(-50%); }
  .site-logo strong { display: none; }
  .site-logo img { width: 39px; height: 39px; }
  .header-actions { order: 3; margin-left: auto; }
  .desktop-menu-toggle { display: none; }
  .header-cta { min-height: 38px; padding: 8px 14px; font-size: 13px; }
  .site-drawer { left: 0; right: auto; transform: translateX(-105%); width: min(360px,90vw); }
  .hero { padding: 54px 0 50px; }
  h1 { font-size: 44px; }
  .hero-grid { gap: 30px; }
  .floating-note { position: static; width: 100%; margin-top: 14px; }
  .section,.article-section { padding: 54px 0; }
  .section-head { display: block; }
  .section-head p { margin-top: 12px; }
  .highlight-grid,.dual-grid,.triple-grid,.review-grid,.service-grid,.compliance-grid,.footer-grid,.article-side { grid-template-columns: 1fr; }
  .highlights { margin-top: 0; padding-top: 22px; }
  .split.reverse .content-visual { order: 0; }
  .security-card { grid-template-columns: 1fr; }
  .security-card img { max-height: 220px; }
  .article-card { padding: 24px; }
  .page-hero { padding: 48px 0 40px; }
  .page-hero-grid { gap: 26px; }
  .footer-grid > div:last-child { grid-column: auto; }
  .footer-bottom { display: block; }
  .footer-bottom div { margin-top: 12px; }
  .mobile-bottom-nav { position: fixed; left: 0; right: 0; bottom: 0; z-index: 9000; display: grid; grid-template-columns: repeat(4,1fr); min-height: 64px; padding-bottom: env(safe-area-inset-bottom); background: rgba(255,255,255,.96); backdrop-filter: blur(14px); border-top: 1px solid var(--border); box-shadow: 0 -10px 30px rgba(25,43,91,.12); }
  .mobile-bottom-nav a { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; text-decoration: none; color: var(--muted); font-size: 12px; }
  .mobile-bottom-nav span { color: var(--brand); font-size: 18px; line-height: 1; }
}
@media (max-width: 420px) {
  .drawer-nav { grid-template-columns: 1fr; }
  .hero-actions { display: grid; }
  .hero-actions a { width: 100%; }
  .header-cta { padding-inline: 11px; }
}