:root {
  --bg: #F5F7FF;
  --nav: rgba(12,18,40,0.94);
  --title: #131A35;
  --primary: #5B6CFF;
  --deep: #16213E;
  --cyan: #00D4FF;
  --gold: #FFC857;
  --rose: #D94F70;
  --violet: #7A5CFF;
  --text: #1F2740;
  --muted: #66708A;
  --soft: #9AA4BA;
  --card: #FFFFFF;
  --dark-card: #11182F;
  --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; min-width: 320px; overflow-x: hidden; 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; }
body.drawer-open { overflow: hidden; }
a { color: inherit; }
img { display: block; max-width: 100%; height: auto; }
button, input, textarea, select { font: inherit; }
main { display: block; }
.container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.section { padding: 88px 0; }
.section-sm { padding: 58px 0; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 34px; }
.section-head.center { max-width: 760px; margin-left: auto; margin-right: auto; text-align: center; display: block; }
.section-kicker { display: inline-flex; align-items: center; gap: 8px; color: #B77B00; font-weight: 800; letter-spacing: .08em; font-size: 14px; text-transform: uppercase; }
.section-kicker::before { content: ""; width: 24px; height: 3px; border-radius: 999px; background: var(--gradient); }
h1, h2, h3, h4, .section-title { color: var(--title); line-height: 1.28; margin-top: 0; }
h1 { font-size: clamp(42px, 6vw, 76px); letter-spacing: -.04em; }
h2 { font-size: clamp(30px, 4vw, 46px); letter-spacing: -.025em; }
h3 { font-size: 22px; }
p { margin: 0 0 1em; }
.lead { font-size: clamp(17px, 2vw, 20px); color: var(--muted); }
.muted { color: var(--muted); }
.text-link { color: var(--primary); font-weight: 800; text-decoration: none; }
.text-link:hover { text-decoration: underline; }
.main-btn, .ghost-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 25px; border-radius: 999px; text-decoration: none; font-weight: 800; transition: transform .22s ease, box-shadow .22s ease, opacity .22s ease; }
.main-btn { color: #fff; background: var(--gradient); box-shadow: 0 14px 32px rgba(91,108,255,.22); }
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 18px 38px rgba(91,108,255,.3); }
.main-btn.compact { min-height: 42px; padding: 0 18px; font-size: 14px; white-space: nowrap; }
.ghost-btn { color: var(--primary); border: 1px solid var(--border); background: rgba(255,255,255,.72); }
.button-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.card, .zone-card, .info-card, .review-card, .faq-item, .feature-card, .service-card { background: var(--card); border: 1px solid var(--border); box-shadow: var(--shadow); border-radius: 22px; }
.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% - 32px)); margin: 0 auto; min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.site-logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: #fff; white-space: nowrap; }
.site-logo img { width: auto; max-height: 44px; object-fit: contain; }
.site-logo strong { font-size: 20px; letter-spacing: -.02em; }
.nav-core { display: flex; align-items: center; justify-content: center; gap: 4px; }
.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; }
.menu-toggle { width: 42px; height: 42px; border: 1px solid rgba(255,255,255,.18); border-radius: 14px; background: rgba(255,255,255,.08); color: #fff; 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: currentColor; }
.mobile-menu-toggle { display: none; }
.drawer-overlay { position: fixed; inset: 0; z-index: 10000; background: rgba(5,9,25,.6); opacity: 0; transition: opacity .22s ease; }
.drawer-overlay.is-visible { opacity: 1; }
.site-drawer { position: fixed; right: 0; top: 0; z-index: 10001; width: min(390px, 90vw); height: 100dvh; overflow-y: auto; padding: 24px; background: #fff; transform: translateX(105%); transition: transform .28s ease; box-shadow: -20px 0 50px rgba(8,14,38,.25); }
.site-drawer.is-open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.drawer-brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--title); font-weight: 900; font-size: 20px; }
.drawer-brand img { max-height: 42px; width: auto; }
.drawer-close { border: 0; background: #EEF2FF; color: var(--title); width: 42px; height: 42px; border-radius: 50%; font-size: 28px; line-height: 1; cursor: pointer; }
.drawer-intro { color: var(--muted); margin: 22px 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: #F4F6FF; color: var(--title); font-weight: 700; }
.drawer-nav a:hover { color: var(--primary); background: #EBEEFF; }
.drawer-note { margin-top: 20px; padding: 16px; border-radius: 16px; background: #FFF8E6; color: #6B5423; font-size: 14px; }
.hero { position: relative; overflow: hidden; padding: 86px 0 74px; background: radial-gradient(circle at 15% 10%, rgba(122,92,255,.2), transparent 28%), radial-gradient(circle at 82% 20%, rgba(0,212,255,.18), transparent 30%), linear-gradient(150deg, #F7F3FF 0%, #EDF9FF 55%, #FFF7FB 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; bottom: -100px; background: rgba(255,200,87,.18); }
.hero::after { width: 120px; height: 120px; left: 8%; bottom: 4%; background: rgba(217,79,112,.1); }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.02fr .98fr; gap: 60px; align-items: center; }
.hero-copy h1 span { display: block; margin-top: 12px; font-size: .48em; color: var(--violet); letter-spacing: -.02em; }
.hero-copy .lead { max-width: 720px; }
.hero-points { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.hero-points span { padding: 8px 13px; border-radius: 999px; background: rgba(255,255,255,.74); border: 1px solid rgba(91,108,255,.16); color: var(--deep); font-weight: 700; }
.hero-visual { position: relative; }
.hero-visual::before { content: ""; position: absolute; inset: 8% -3% -4% 7%; border-radius: 36px; background: var(--gradient); opacity: .13; filter: blur(2px); transform: rotate(2deg); }
.hero-visual img { position: relative; width: 100%; height: auto; object-fit: contain; border-radius: 34px; box-shadow: 0 28px 68px rgba(31,44,95,.22); }
.hero-float { position: absolute; left: -30px; bottom: 24px; z-index: 2; max-width: 230px; padding: 15px 17px; border-radius: 18px; background: rgba(17,24,47,.9); color: #fff; box-shadow: 0 18px 40px rgba(13,19,45,.26); }
.hero-float strong { display: block; color: var(--cyan); }
.highlight-strip { position: relative; z-index: 2; margin-top: -24px; }
.highlight-grid { display: grid; grid-template-columns: repeat(4,1fr); overflow: hidden; border-radius: 24px; background: #11182F; box-shadow: 0 22px 54px rgba(16,25,59,.25); }
.highlight-item { padding: 24px; color: #DDE5FF; border-right: 1px solid rgba(255,255,255,.08); }
.highlight-item:last-child { border-right: 0; }
.highlight-item h3 { color: #fff; margin-bottom: 7px; font-size: 18px; }
.highlight-item p { margin: 0; color: #B8C3E4; font-size: 14px; }
.channel-cloud { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }
.channel-pill { min-width: 176px; flex: 1 1 190px; max-width: 250px; padding: 17px 18px; border-radius: 18px; background: #fff; border: 1px solid var(--border); text-decoration: none; transition: transform .2s ease, box-shadow .2s ease; }
.channel-pill:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.channel-pill strong { display: block; color: var(--title); }
.channel-pill small { display: block; margin-top: 5px; color: var(--muted); line-height: 1.55; }
.media-split { display: grid; grid-template-columns: 1fr 1fr; gap: 52px; align-items: center; }
.media-split.reverse .media-copy { order: 2; }
.media-split.reverse .media-visual { order: 1; }
.media-visual img, .content-img, .zone-card img, .app-section img { width: 100%; height: auto; object-fit: contain; border-radius: 26px; box-shadow: var(--shadow); }
.media-copy ul, .feature-card ul { margin: 18px 0 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.media-copy li, .feature-card li { position: relative; padding-left: 24px; color: var(--muted); }
.media-copy li::before, .feature-card li::before { content: "✓"; position: absolute; left: 0; color: var(--primary); font-weight: 900; }
.dual-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 26px; }
.triple-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.zone-card { overflow: hidden; }
.zone-card img { border-radius: 0; box-shadow: none; aspect-ratio: 16 / 10; background: #EEF2FF; }
.zone-card-body { padding: 28px; }
.zone-card .mini-list { display: grid; gap: 10px; margin: 20px 0; }
.zone-card .mini-list span { display: block; padding: 10px 12px; background: #F6F7FF; border-radius: 12px; color: var(--muted); }
.security-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.security-card { position: relative; overflow: hidden; padding: 30px; border-radius: 24px; background: #11182F; color: #DDE5FF; }
.security-card h3 { color: #fff; }
.security-card img { width: 42%; max-width: 210px; margin-left: auto; border-radius: 18px; object-fit: contain; }
.security-card .security-copy { max-width: 70%; }
.security-card a { color: var(--cyan); font-weight: 800; }
.review-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; }
.review-card { padding: 24px; }
.review-card blockquote { margin: 0 0 18px; color: var(--text); }
.review-meta { display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: 14px; }
.review-avatar { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 50%; background: var(--gradient); color: #fff; font-weight: 900; }
.faq-list { display: grid; gap: 14px; }
.faq-item { padding: 0; overflow: hidden; box-shadow: 0 10px 26px rgba(25,43,91,.08); }
.faq-item summary { cursor: pointer; padding: 20px 24px; color: var(--title); font-weight: 900; list-style: none; display: flex; justify-content: space-between; gap: 18px; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; color: var(--primary); font-size: 23px; }
.faq-item[open] summary::after { content: "−"; }
.faq-answer { padding: 0 24px 22px; color: var(--muted); }
.notice-band { border-radius: 28px; padding: 38px; background: linear-gradient(135deg, #FFF4D6, #EFF8FF 52%, #F6EEFF); border: 1px solid rgba(255,200,87,.38); }
.notice-band h2 { font-size: clamp(28px, 3.6vw, 40px); }
.inner-hero { padding: 74px 0; background: radial-gradient(circle at 10% 15%, rgba(122,92,255,.18), transparent 30%), radial-gradient(circle at 90% 5%, rgba(0,212,255,.16), transparent 28%), linear-gradient(150deg, #F9F6FF, #EDF9FF); }
.inner-hero-grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: 54px; align-items: center; }
.inner-hero h1 { font-size: clamp(38px, 5vw, 62px); margin-bottom: 18px; }
.inner-hero img { width: 100%; object-fit: contain; border-radius: 28px; box-shadow: var(--shadow); }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; color: var(--muted); font-size: 14px; }
.breadcrumb a { color: var(--primary); text-decoration: none; }
.prose { max-width: 880px; }
.prose p { color: #4D5874; font-size: 17px; }
.feature-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; }
.feature-card { padding: 27px; box-shadow: 0 16px 36px rgba(25,43,91,.1); }
.feature-icon { width: 48px; height: 48px; border-radius: 15px; display: grid; place-items: center; margin-bottom: 18px; background: linear-gradient(135deg, #EEF0FF, #EAFBFF); color: var(--primary); font-weight: 900; }
.steps { counter-reset: step; display: grid; grid-template-columns: repeat(4,1fr); gap: 18px; }
.step { counter-increment: step; padding: 24px; border-radius: 20px; background: #fff; border: 1px solid var(--border); }
.step::before { content: counter(step, decimal-leading-zero); display: inline-flex; margin-bottom: 16px; color: var(--violet); font-size: 28px; font-weight: 900; }
.step h3 { font-size: 19px; }
.quote-panel { display: grid; grid-template-columns: .85fr 1.15fr; gap: 34px; align-items: center; padding: 34px; border-radius: 28px; background: #11182F; color: #E5EAFF; }
.quote-panel img { width: 100%; max-height: 340px; object-fit: contain; border-radius: 20px; }
.quote-panel h2 { color: #fff; }
.quote-panel blockquote { margin: 0 0 18px; font-size: 19px; }
.service-note-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 22px; }
.service-card { padding: 26px; box-shadow: 0 12px 30px rgba(25,43,91,.08); }
.contact-form { display: grid; gap: 16px; }
.contact-form label { display: grid; gap: 8px; color: var(--title); font-weight: 800; }
.contact-form input, .contact-form textarea, .contact-form select { width: 100%; border: 1px solid var(--border); border-radius: 14px; padding: 13px 15px; background: #fff; color: var(--text); outline: none; }
.contact-form textarea { min-height: 150px; resize: vertical; }
.contact-form input:focus, .contact-form textarea:focus, .contact-form select:focus { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(91,108,255,.1); }
.site-footer { background: #0B1024; color: #EEF2FF; padding: 64px 0 0; }
.footer-inner { width: min(1180px, calc(100% - 40px)); margin: 0 auto; display: grid; grid-template-columns: 1.1fr 2fr; gap: 56px; }
.footer-logo { display: inline-flex; align-items: center; gap: 10px; color: #fff; text-decoration: none; font-size: 22px; font-weight: 900; }
.footer-logo img { max-height: 48px; width: auto; }
.footer-brand p { color: #AEB9D9; max-width: 460px; margin-top: 18px; }
.footer-links { display: grid; grid-template-columns: repeat(4,1fr); gap: 26px; }
.footer-links h3 { color: #fff; font-size: 16px; margin-bottom: 14px; }
.footer-links a { display: block; color: #AEB9D9; text-decoration: none; margin: 8px 0; font-size: 14px; }
.footer-links a:hover { color: var(--cyan); }
.footer-bottom { margin-top: 44px; padding: 20px; border-top: 1px solid rgba(255,255,255,.08); text-align: center; color: #97A4CB; font-size: 13px; }
.footer-bottom p { margin: 0; }
.mobile-bottom-nav { display: none; }
@media (max-width: 1080px) {
  .nav-core { display: none; }
  .mobile-menu-toggle { display: inline-flex; }
  .desktop-menu-toggle { display: none; }
  .hero-grid, .inner-hero-grid { gap: 34px; }
  .review-grid { grid-template-columns: repeat(2,1fr); }
  .footer-inner { grid-template-columns: 1fr; }
}
@media (max-width: 820px) {
  .section { padding: 68px 0; }
  .hero { padding-top: 58px; }
  .hero-grid, .inner-hero-grid, .media-split, .dual-grid, .security-panel, .quote-panel { grid-template-columns: 1fr; }
  .media-split.reverse .media-copy, .media-split.reverse .media-visual { order: initial; }
  .hero-visual { max-width: 620px; margin: 0 auto; }
  .hero-float { left: 12px; bottom: 12px; }
  .highlight-grid { grid-template-columns: repeat(2,1fr); }
  .highlight-item:nth-child(2) { border-right: 0; }
  .highlight-item:nth-child(-n+2) { border-bottom: 1px solid rgba(255,255,255,.08); }
  .triple-grid, .feature-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2,1fr); }
  .quote-panel img { max-height: 280px; }
  .footer-links { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 600px) {
  body { padding-bottom: 74px; }
  .container, .footer-inner { width: min(100% - 28px, 1180px); }
  .header-inner { width: calc(100% - 20px); min-height: 64px; gap: 8px; }
  .site-logo strong { display: none; }
  .site-logo img { max-height: 38px; max-width: 120px; }
  .main-btn.compact { min-height: 38px; padding: 0 13px; font-size: 13px; }
  .menu-toggle { width: 38px; height: 38px; border-radius: 12px; }
  h1 { font-size: 42px; }
  .hero { padding: 44px 0 58px; }
  .hero-grid { gap: 30px; }
  .hero-copy h1 span { font-size: .44em; }
  .hero-float { position: static; margin-top: 12px; max-width: none; }
  .highlight-strip { margin-top: -18px; }
  .highlight-grid { grid-template-columns: 1fr; }
  .highlight-item { border-right: 0; border-bottom: 1px solid rgba(255,255,255,.08); }
  .highlight-item:last-child { border-bottom: 0; }
  .section { padding: 56px 0; }
  .section-head { align-items: flex-start; flex-direction: column; margin-bottom: 26px; }
  .channel-pill { max-width: none; flex-basis: 100%; }
  .review-grid, .steps, .service-note-grid { grid-template-columns: 1fr; }
  .notice-band { padding: 28px 22px; }
  .security-card .security-copy { max-width: 100%; }
  .security-card img { width: 58%; margin-top: 18px; }
  .drawer-nav { grid-template-columns: 1fr; }
  .site-drawer { left: 0; right: auto; transform: translateX(-105%); }
  .site-drawer.is-open { transform: translateX(0); }
  .mobile-bottom-nav { position: fixed; left: 0; right: 0; bottom: 0; z-index: 9500; display: grid; grid-template-columns: repeat(4,1fr); min-height: 64px; padding-bottom: env(safe-area-inset-bottom); background: rgba(11,16,36,.96); backdrop-filter: blur(14px); border-top: 1px solid rgba(255,255,255,.08); }
  .mobile-bottom-nav a { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; color: #DDE5FF; text-decoration: none; font-size: 12px; }
  .mobile-bottom-nav span { color: var(--cyan); font-size: 18px; line-height: 1; }
  .footer-links { gap: 18px; }
}