:root {
  --bg: #F5F7FF;
  --nav: rgba(12,18,40,0.94);
  --title: #131A35;
  --brand: #5B6CFF;
  --deep: #16213E;
  --cyan: #00D4FF;
  --gold: #FFC857;
  --rose: #D94F70;
  --lavender: #7A5CFF;
  --text: #1F2740;
  --muted: #66708A;
  --soft: #9AA4BA;
  --card: #FFFFFF;
  --footer: #0B1024;
  --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: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; line-height: 1.75; overflow-x: hidden; }
body.drawer-open { overflow: hidden; }
a { color: inherit; }
img { max-width: 100%; height: auto; }
.skip-link { position: fixed; top: -60px; left: 20px; z-index: 12000; background: #fff; color: var(--brand); padding: 10px 16px; border-radius: 12px; }
.skip-link:focus { top: 12px; }
.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% - 36px)); min-height: 72px; margin: 0 auto; 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; min-width: 116px; }
.site-logo img { width: 44px; height: 44px; object-fit: contain; display: block; }
.site-logo strong { font-size: 25px; letter-spacing: .04em; }
.nav-core { display: flex; align-items: center; justify-content: center; gap: 6px; }
.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(0,212,255,0.16); }
.header-actions { display: flex; align-items: center; gap: 12px; min-width: 170px; justify-content: flex-end; }
.main-btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; background: var(--gradient); color: #fff; text-decoration: none; border-radius: 999px; padding: 13px 24px; box-shadow: 0 14px 32px rgba(91,108,255,0.22); font-weight: 700; transition: transform .2s ease, box-shadow .2s ease; }
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 18px 36px rgba(91,108,255,0.3); }
.main-btn.compact { padding: 9px 17px; font-size: 14px; white-space: nowrap; }
.secondary-btn { display: inline-flex; align-items: center; justify-content: center; text-decoration: none; padding: 12px 22px; border: 1px solid rgba(91,108,255,.35); color: var(--brand); border-radius: 999px; font-weight: 700; background: rgba(255,255,255,.78); }
.menu-toggle { width: 42px; height: 42px; border: 1px solid rgba(255,255,255,.18); border-radius: 12px; background: rgba(255,255,255,.08); display: inline-flex; flex-direction: column; justify-content: center; align-items: center; gap: 4px; cursor: pointer; }
.menu-toggle span { width: 18px; height: 2px; background: #fff; border-radius: 2px; }
.mobile-only { display: none; }
.site-drawer { position: fixed; inset: 0 0 0 auto; width: min(390px, 88vw); background: #fff; z-index: 10002; transform: translateX(105%); transition: transform .28s ease; box-shadow: -18px 0 45px rgba(9,17,43,.28); overflow-y: auto; }
.site-drawer.open { transform: translateX(0); }
.drawer-overlay { position: fixed; inset: 0; background: rgba(5,10,30,.55); z-index: 10001; opacity: 0; visibility: hidden; transition: opacity .25s ease; }
.drawer-overlay.open { opacity: 1; visibility: visible; }
.drawer-head { display: flex; align-items: center; justify-content: space-between; padding: 22px; border-bottom: 1px solid #edf0fb; }
.drawer-brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-size: 22px; font-weight: 800; color: var(--title); }
.drawer-brand img { width: 40px; height: 40px; object-fit: contain; }
.drawer-close { border: 0; background: #F2F4FF; width: 40px; height: 40px; border-radius: 12px; font-size: 28px; color: var(--title); cursor: pointer; }
.drawer-nav { padding: 18px 22px; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.drawer-nav a { text-decoration: none; padding: 10px 12px; border-radius: 12px; color: var(--text); background: #F7F8FF; }
.drawer-nav a:hover { color: var(--brand); background: #EEF1FF; }
.drawer-note { margin: 0 22px 24px; padding: 16px; border-radius: 16px; background: #FFF7E2; color: #765A12; font-size: 14px; }
.container { width: min(1200px, calc(100% - 40px)); margin: 0 auto; }
.section { padding: 88px 0; }
.section-sm { padding: 56px 0; }
.section-kicker { color: var(--lavender); text-transform: uppercase; font-weight: 800; letter-spacing: .1em; font-size: 13px; margin-bottom: 8px; }
.section-title, h1, h2, h3 { color: var(--title); line-height: 1.25; }
h1 { font-size: clamp(42px, 7vw, 84px); margin: 0 0 18px; }
h2 { font-size: clamp(28px, 4vw, 44px); margin: 0 0 18px; }
h3 { margin: 0 0 10px; font-size: 21px; }
p { margin: 0 0 18px; }
.lead { font-size: clamp(17px, 2vw, 20px); color: #4D5874; max-width: 760px; }
.hero { position: relative; overflow: hidden; padding: 86px 0 72px; background: radial-gradient(circle at 12% 16%, rgba(0,212,255,.18), transparent 32%), radial-gradient(circle at 92% 16%, rgba(217,79,112,.16), transparent 31%), linear-gradient(140deg, #F7F7FF 0%, #EEF5FF 46%, #FFF1F8 100%); }
.hero::after { content: ""; position: absolute; width: 480px; height: 480px; border-radius: 50%; right: -180px; bottom: -260px; background: rgba(122,92,255,.12); filter: blur(2px); }
.hero-grid { display: grid; grid-template-columns: 1.03fr .97fr; align-items: center; gap: 56px; position: relative; z-index: 1; }
.hero-subtitle { font-size: clamp(24px, 4vw, 40px); font-weight: 800; color: var(--deep); margin-bottom: 20px; }
.hero-copy { color: var(--muted); font-size: 17px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin: 28px 0 26px; }
.hero-points { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-points span { background: rgba(255,255,255,.88); border: 1px solid var(--border); padding: 8px 13px; border-radius: 999px; color: #44506E; font-size: 14px; }
.hero-visual { position: relative; }
.hero-visual img { width: 100%; max-height: 620px; object-fit: contain; filter: drop-shadow(0 28px 45px rgba(23,39,91,.2)); }
.floating-card { position: absolute; border-radius: 18px; padding: 14px 16px; background: rgba(255,255,255,.9); box-shadow: var(--shadow); font-size: 14px; font-weight: 700; color: var(--deep); backdrop-filter: blur(10px); }
.floating-card.one { left: -18px; top: 18%; }
.floating-card.two { right: -14px; bottom: 15%; }
.highlight-strip { margin-top: -26px; position: relative; z-index: 3; }
.highlight-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.card, .zone-card, .info-card, .review-card { background: #fff; border: 1px solid var(--border); box-shadow: var(--shadow); border-radius: 22px; }
.highlight-card { padding: 22px; }
.highlight-card strong { display: block; color: var(--title); margin-bottom: 6px; }
.highlight-card p { color: var(--muted); font-size: 14px; margin: 0; }
.capsule-grid { display: flex; flex-wrap: wrap; gap: 12px; }
.capsule { flex: 1 1 200px; padding: 18px 20px; border-radius: 999px; text-decoration: none; background: #fff; border: 1px solid var(--border); box-shadow: 0 12px 28px rgba(25,43,91,.08); }
.capsule strong { display: block; color: var(--title); }
.capsule small { color: var(--muted); }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 38px; align-items: center; }
.split.reverse .media { order: 2; }
.media img, .content-img { width: 100%; max-height: 520px; object-fit: contain; border-radius: 26px; }
.copy-panel { padding: 12px 0; }
.text-link { display: inline-flex; gap: 6px; align-items: center; color: var(--brand); font-weight: 800; text-decoration: none; }
.text-link:hover { text-decoration: underline; }
.feature-list { display: grid; gap: 12px; margin: 22px 0; }
.feature-item { display: grid; grid-template-columns: 36px 1fr; gap: 12px; }
.feature-icon { width: 36px; height: 36px; border-radius: 12px; display: grid; place-items: center; background: linear-gradient(135deg, rgba(91,108,255,.14), rgba(0,212,255,.16)); color: var(--brand); 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: 22px; }
.zone-card { overflow: hidden; }
.zone-card img { width: 100%; height: 260px; object-fit: contain; background: linear-gradient(140deg, #F2F5FF, #FFF5FA); }
.zone-body { padding: 26px; }
.zone-body p { color: var(--muted); }
.tint-blue { background: linear-gradient(135deg, #EFF8FF, #FFFFFF); }
.tint-gold { background: linear-gradient(135deg, #FFF8E8, #FFFFFF); }
.tint-purple { background: linear-gradient(135deg, #F3F0FF, #FFFFFF); }
.dark-section { background: linear-gradient(135deg, #11182F 0%, #18264C 100%); color: #EAF0FF; }
.dark-section h2, .dark-section h3 { color: #fff; }
.dark-section p { color: #C9D2EB; }
.safety-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.safety-card { padding: 30px; border-radius: 26px; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.13); }
.safety-card img { width: 100%; max-height: 260px; object-fit: contain; margin-bottom: 18px; }
.review-card { padding: 24px; }
.review-card p { color: var(--muted); }
.review-meta { display: flex; justify-content: space-between; align-items: center; color: var(--soft); font-size: 13px; }
.faq-list { display: grid; gap: 14px; }
details { background: #fff; border: 1px solid var(--border); border-radius: 18px; padding: 0 20px; box-shadow: 0 10px 26px rgba(25,43,91,.06); }
summary { cursor: pointer; padding: 18px 0; color: var(--title); font-weight: 800; }
details p { color: var(--muted); padding-bottom: 18px; }
.notice { padding: 24px 28px; border-radius: 22px; background: linear-gradient(135deg, #FFF8E5, #FFF2F7); border: 1px solid rgba(255,200,87,.55); }
.page-hero { padding: 78px 0 62px; background: radial-gradient(circle at 85% 20%, rgba(0,212,255,.14), transparent 30%), linear-gradient(135deg, #F7F7FF, #EEF5FF 52%, #FFF4F8); }
.page-hero-grid { display: grid; grid-template-columns: 1.12fr .88fr; gap: 44px; align-items: center; }
.page-hero h1 { font-size: clamp(38px, 6vw, 66px); }
.page-hero img { width: 100%; max-height: 440px; object-fit: contain; }
.breadcrumbs { font-size: 14px; color: var(--muted); margin-bottom: 14px; }
.breadcrumbs a { color: var(--brand); text-decoration: none; }
.content-section { padding: 70px 0; }
.article-grid { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 34px; align-items: start; }
.article-body { background: #fff; border: 1px solid var(--border); border-radius: 26px; box-shadow: var(--shadow); padding: clamp(26px, 4vw, 48px); }
.article-body h2 { font-size: clamp(25px, 3.5vw, 36px); margin-top: 44px; }
.article-body h2:first-child { margin-top: 0; }
.article-body h3 { margin-top: 26px; }
.article-body p { color: #4E5871; }
.article-body ul { padding-left: 20px; color: #4E5871; }
.sidebar { display: grid; gap: 18px; position: sticky; top: 94px; }
.sidebar-card { padding: 22px; border-radius: 20px; background: #fff; border: 1px solid var(--border); box-shadow: 0 14px 30px rgba(25,43,91,.08); }
.sidebar-card a { display: block; padding: 8px 0; text-decoration: none; color: var(--brand); border-bottom: 1px solid #EEF0F7; }
.sidebar-card a:last-child { border-bottom: 0; }
.cta-band { padding: 34px; border-radius: 26px; background: var(--gradient); color: #fff; display: flex; justify-content: space-between; gap: 24px; align-items: center; }
.cta-band h2 { color: #fff; margin: 0 0 8px; font-size: clamp(26px, 4vw, 38px); }
.cta-band p { margin: 0; color: rgba(255,255,255,.88); }
.cta-band .secondary-btn { background: #fff; border: 0; color: var(--brand); flex: 0 0 auto; }
.site-footer { background: var(--footer); color: #EEF2FF; padding: 66px 0 96px; }
.footer-inner { width: min(1200px, calc(100% - 40px)); margin: 0 auto; display: grid; grid-template-columns: .9fr 2.1fr; gap: 58px; }
.footer-brand p { color: #AEB8D5; }
.footer-logo { margin-bottom: 18px; }
.footer-links { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.footer-links h3 { color: #fff; font-size: 16px; }
.footer-links a { display: block; color: #B9C3DF; text-decoration: none; padding: 5px 0; font-size: 14px; }
.footer-links a:hover { color: #fff; }
.footer-bottom { width: min(1200px, calc(100% - 40px)); margin: 38px auto 0; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.1); color: #95A0C0; font-size: 13px; }
.footer-bottom p { margin-bottom: 6px; }
.mobile-bottom-nav { display: none; }
@media (max-width: 1060px) {
  .nav-core { display: none; }
  .header-inner { min-height: 68px; }
  .mobile-only { display: inline-flex; }
  .desktop-menu { display: none; }
  .site-logo { justify-content: center; min-width: auto; }
  .header-actions { min-width: auto; }
  .hero-grid, .page-hero-grid, .split { grid-template-columns: 1fr; }
  .hero-visual { max-width: 720px; margin: 0 auto; }
  .split.reverse .media { order: 0; }
  .highlight-grid { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .article-grid { grid-template-columns: 1fr; }
  .sidebar { position: static; grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  body { padding-bottom: 72px; }
  .container { width: min(100% - 28px, 1200px); }
  .header-inner { width: min(100% - 20px, 1280px); gap: 8px; }
  .site-logo img { width: 38px; height: 38px; }
  .site-logo strong { font-size: 21px; }
  .header-actions .main-btn { padding: 8px 13px; font-size: 13px; }
  .menu-toggle { width: 38px; height: 38px; }
  .hero { padding: 62px 0 54px; }
  .hero-copy { font-size: 16px; }
  .floating-card { position: static; display: inline-block; margin: 6px 4px 0 0; }
  .highlight-strip { margin-top: 0; padding-top: 18px; }
  .highlight-grid, .grid-2, .grid-3, .grid-4, .safety-grid { grid-template-columns: 1fr; }
  .section { padding: 64px 0; }
  .section-sm { padding: 44px 0; }
  .zone-card img { height: auto; max-height: 340px; }
  .page-hero { padding: 58px 0 48px; }
  .article-body { border-radius: 20px; }
  .sidebar { grid-template-columns: 1fr; }
  .cta-band { flex-direction: column; align-items: flex-start; padding: 26px; }
  .footer-links { grid-template-columns: repeat(2, 1fr); }
  .site-footer { padding-bottom: 40px; }
  .mobile-bottom-nav { position: fixed; z-index: 9000; left: 12px; right: 12px; bottom: max(10px, env(safe-area-inset-bottom)); height: 58px; border-radius: 20px; background: rgba(11,16,36,.95); display: grid; grid-template-columns: repeat(4, 1fr); align-items: center; box-shadow: 0 12px 32px rgba(8,13,33,.3); backdrop-filter: blur(12px); }
  .mobile-bottom-nav a { color: #E9EEFF; text-decoration: none; text-align: center; font-size: 12px; line-height: 1.2; }
  .mobile-bottom-nav span { display: block; color: var(--cyan); font-size: 18px; margin-bottom: 2px; }
}
@media (max-width: 430px) {
  .site-logo strong { display: none; }
  .drawer-nav { grid-template-columns: 1fr; }
  .footer-links { grid-template-columns: 1fr 1fr; gap: 18px; }
}