:root {
  --bg: #F5F7FF; --ink: #1F2740; --title: #131A35; --muted: #66708A; --soft: #9AA4BA;
  --brand: #5B6CFF; --purple: #7A5CFF; --cyan: #00D4FF; --gold: #FFC857; --rose: #D94F70;
  --nav: rgba(12,18,40,.94); --footer: #0B1024; --card: #FFFFFF; --line: rgba(91,108,255,.18);
  --shadow: 0 20px 46px rgba(25,43,91,.14); --radius: 24px; --max: 1240px;
}
* { 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.menu-open { overflow: hidden; }
a { color: inherit; }
img { max-width: 100%; height: auto; display: block; }
button, a { -webkit-tap-highlight-color: transparent; }
.container { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; }
.site-main { min-height: 60vh; }
.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(calc(100% - 40px), 1280px); margin: 0 auto; min-height: 72px; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 32px; }
.site-logo { display: inline-flex; align-items: center; gap: 10px; color: #fff; text-decoration: none; white-space: nowrap; }
.site-logo img { width: auto; max-width: 48px; max-height: 44px; object-fit: contain; }
.site-logo strong { font-size: 20px; letter-spacing: .04em; }
.nav-core { display: flex; justify-content: center; align-items: center; gap: 8px; min-width: 0; }
.nav-core a { color: #EEF2FF; text-decoration: none; border-radius: 999px; padding: 8px 12px; white-space: nowrap; font-size: 15px; transition: .25s ease; }
.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, .secondary-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 24px; border-radius: 999px; font-weight: 700; text-decoration: none; transition: transform .2s ease, box-shadow .2s ease; border: 0; }
.main-btn { background: linear-gradient(135deg, #5B6CFF 0%, #7A5CFF 48%, #00D4FF 100%); color: #fff; box-shadow: 0 14px 32px rgba(91,108,255,.22); }
.secondary-btn { color: var(--brand); background: #fff; border: 1px solid var(--line); box-shadow: 0 12px 30px rgba(25,43,91,.08); }
.main-btn:hover, .secondary-btn:hover { transform: translateY(-2px); }
.compact-btn { min-height: 42px; padding: 0 19px; font-size: 14px; }
.menu-toggle { width: 42px; height: 42px; border: 1px solid rgba(255,255,255,.18); background: rgba(255,255,255,.08); border-radius: 50%; display: inline-grid; place-content: center; gap: 4px; cursor: pointer; }
.menu-toggle span { width: 18px; height: 2px; background: #fff; border-radius: 9px; }
.mobile-only { display: none; }
.drawer-mask { position: fixed; inset: 0; z-index: 10000; background: rgba(7,11,27,.56); opacity: 0; visibility: hidden; transition: .25s ease; }
.drawer-mask.open { opacity: 1; visibility: visible; }
.site-drawer { position: fixed; top: 0; right: 0; z-index: 10001; width: min(390px, 88vw); height: 100dvh; padding: 24px; background: #fff; transform: translateX(105%); transition: transform .3s ease; overflow-y: auto; box-shadow: -20px 0 50px rgba(11,16,36,.2); }
.site-drawer.open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; }
.drawer-brand { display: inline-flex; align-items: center; gap: 10px; color: var(--title); font-weight: 800; text-decoration: none; font-size: 19px; }
.drawer-brand img { width: 42px; max-height: 42px; object-fit: contain; }
.drawer-close { width: 42px; height: 42px; border: 0; border-radius: 50%; background: #EEF1FF; color: var(--title); font-size: 28px; cursor: pointer; }
.drawer-intro { color: var(--muted); margin: 18px 0; }
.drawer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.drawer-nav a { text-decoration: none; color: var(--ink); padding: 12px 14px; border-radius: 14px; background: #F5F7FF; border: 1px solid transparent; }
.drawer-nav a:hover { color: var(--brand); border-color: var(--line); }
.drawer-safe-note { margin-top: 18px; padding: 16px; border-radius: 16px; color: #58627A; background: #FFF7DF; border: 1px solid rgba(255,200,87,.4); font-size: 13px; }
.section-space { padding: 88px 0; }
.soft-section { background: linear-gradient(180deg, rgba(234,247,255,.7), rgba(245,247,255,0)); }
.section-kicker { display: inline-block; color: var(--brand); font-size: 13px; letter-spacing: .15em; font-weight: 800; text-transform: uppercase; }
h1, h2, h3, .section-title { color: var(--title); line-height: 1.25; margin-top: 0; }
h1 { font-size: clamp(42px, 7vw, 78px); letter-spacing: -.04em; margin-bottom: 20px; }
h2 { font-size: clamp(28px, 4vw, 42px); margin-bottom: 18px; }
h3 { font-size: 20px; }
p { margin: 0 0 16px; }
.lead { font-size: 18px; color: #4D5874; max-width: 720px; }
.section-heading { margin-bottom: 36px; max-width: 760px; }
.section-heading.centered { text-align: center; margin-left: auto; margin-right: auto; }
.section-heading p { color: var(--muted); font-size: 17px; }
.hero { position: relative; overflow: hidden; padding: 76px 0 46px; background: radial-gradient(circle at 12% 12%, rgba(255,200,87,.28), transparent 24%), radial-gradient(circle at 84% 20%, rgba(0,212,255,.24), transparent 26%), linear-gradient(135deg, #FAF7FF 0%, #EEF8FF 45%, #F8F1FF 100%); }
.hero:after { content: ""; position: absolute; width: 280px; height: 280px; border-radius: 50%; right: -120px; bottom: -120px; background: rgba(122,92,255,.13); }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 64px; }
.hero-copy h1 span { display: block; font-size: .35em; color: var(--brand); letter-spacing: .12em; margin-bottom: 8px; }
.hero-copy .lead { max-width: 680px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin: 28px 0; }
.hero-points { display: flex; flex-wrap: wrap; gap: 10px; }
.hero-points span { padding: 8px 13px; border-radius: 999px; background: rgba(255,255,255,.72); border: 1px solid rgba(91,108,255,.14); color: #46506B; font-size: 14px; }
.hero-visual { position: relative; }
.hero-visual:before { content: ""; position: absolute; inset: 6% 4% -4% 8%; background: linear-gradient(135deg, rgba(91,108,255,.22), rgba(0,212,255,.16)); border-radius: 36px; transform: rotate(3deg); }
.hero-visual img { position: relative; width: 100%; max-height: 580px; object-fit: contain; filter: drop-shadow(0 28px 36px rgba(25,43,91,.18)); }
.highlight-strip { margin-top: -1px; padding: 0 0 26px; background: linear-gradient(180deg, #F8F1FF 0%, transparent 100%); }
.highlight-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.highlight-item { background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 20px; box-shadow: 0 14px 34px rgba(25,43,91,.08); }
.highlight-item strong { display: block; color: var(--title); font-size: 17px; margin-bottom: 6px; }
.highlight-item p { color: var(--muted); font-size: 14px; margin: 0; }
.channel-cloud { display: flex; gap: 12px; flex-wrap: wrap; }
.channel-pill { flex: 1 1 210px; min-height: 120px; padding: 18px; border-radius: 20px; background: #fff; border: 1px solid var(--line); text-decoration: none; box-shadow: 0 12px 28px rgba(25,43,91,.06); }
.channel-pill strong { display: block; color: var(--title); margin-bottom: 5px; }
.channel-pill span { color: var(--muted); font-size: 14px; }
.split-section { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 58px; }
.media-frame { background: #fff; border: 1px solid var(--line); border-radius: 30px; padding: 18px; box-shadow: var(--shadow); }
.media-frame img { width: 100%; max-height: 480px; object-fit: contain; border-radius: 20px; }
.text-link { color: var(--brand); font-weight: 700; text-decoration: none; }
.feature-list { display: grid; gap: 14px; margin: 24px 0; }
.feature-list div { padding: 15px 17px; background: rgba(255,255,255,.78); border: 1px solid var(--line); border-radius: 16px; }
.feature-list strong { color: var(--title); }
.dual-grid, .triple-grid, .review-grid, .faq-grid { display: grid; gap: 20px; }
.dual-grid { grid-template-columns: repeat(2, 1fr); }
.triple-grid { grid-template-columns: repeat(3, 1fr); }
.card, .zone-card, .info-card, .review-card, .side-card, .faq-item { background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow); border-radius: 22px; }
.zone-card { overflow: hidden; }
.zone-card img { width: 100%; height: 280px; object-fit: contain; background: linear-gradient(135deg, #F0F5FF, #FFF8E8); }
.zone-card-body { padding: 26px; }
.zone-card-body p { color: var(--muted); }
.service-points { padding: 0; margin: 18px 0; list-style: none; display: grid; gap: 9px; }
.service-points li { position: relative; padding-left: 22px; }
.service-points li:before { content: ""; position: absolute; left: 0; top: .65em; width: 8px; height: 8px; border-radius: 50%; background: linear-gradient(135deg, var(--brand), var(--cyan)); }
.info-card { padding: 26px; }
.info-card .mini-icon { width: 46px; height: 46px; border-radius: 15px; display: grid; place-content: center; background: #EEF1FF; color: var(--brand); font-weight: 900; margin-bottom: 18px; }
.info-card p { color: var(--muted); }
.safety-band { padding: 34px; border-radius: 30px; background: linear-gradient(135deg, #11182F, #16213E); color: #EEF2FF; box-shadow: 0 26px 56px rgba(17,24,47,.24); }
.safety-band h2, .safety-band h3 { color: #fff; }
.safety-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 34px; align-items: center; }
.safety-images { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.safety-images img { width: 100%; height: 230px; object-fit: contain; background: #fff; border-radius: 20px; padding: 8px; }
.safety-notes { display: grid; gap: 10px; }
.safety-notes div { padding: 12px 14px; border-radius: 14px; background: rgba(255,255,255,.08); }
.review-grid { grid-template-columns: repeat(3, 1fr); }
.review-card { padding: 25px; }
.review-card p { color: #4F5A76; }
.review-card footer { display: flex; align-items: center; gap: 10px; color: var(--brand); font-weight: 700; }
.review-card footer:before { content: ""; width: 24px; height: 3px; background: var(--gold); border-radius: 9px; }
.faq-grid { grid-template-columns: repeat(2, 1fr); }
.faq-item { padding: 0 22px; box-shadow: 0 12px 30px rgba(25,43,91,.07); }
.faq-item summary { cursor: pointer; list-style: none; padding: 20px 30px 20px 0; color: var(--title); font-weight: 800; position: relative; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:after { content: "+"; position: absolute; right: 0; top: 17px; font-size: 24px; color: var(--brand); }
.faq-item[open] summary:after { content: "–"; }
.faq-item p { padding-bottom: 20px; color: var(--muted); }
.notice-card { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 22px; padding: 30px; border-radius: 26px; background: #FFF7DF; border: 1px solid rgba(255,200,87,.46); }
.notice-card .notice-mark { width: 64px; height: 64px; border-radius: 20px; display: grid; place-content: center; background: var(--gold); color: #3A2C00; font-size: 28px; font-weight: 900; }
.notice-card h2 { font-size: 28px; margin-bottom: 8px; }
.notice-card p { color: #66572B; margin: 0; }
.inner-hero { padding: 70px 0 58px; background: radial-gradient(circle at 20% 10%, rgba(255,200,87,.24), transparent 25%), linear-gradient(135deg, #F8F2FF, #ECF8FF); }
.inner-hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 58px; align-items: center; }
.inner-hero-copy h1 { font-size: clamp(38px, 6vw, 66px); }
.inner-hero-visual { border-radius: 30px; background: rgba(255,255,255,.76); border: 1px solid var(--line); box-shadow: var(--shadow); padding: 18px; }
.inner-hero-visual img { width: 100%; max-height: 480px; object-fit: contain; }
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 42px; align-items: start; }
.article-main { min-width: 0; }
.article-section { position: relative; padding: 0 0 44px 64px; border-left: 1px solid var(--line); }
.article-section:last-child { padding-bottom: 0; }
.section-number { position: absolute; left: -22px; top: 0; width: 44px; height: 44px; border-radius: 50%; display: grid; place-content: center; color: #fff; background: linear-gradient(135deg, var(--brand), var(--purple)); font-size: 13px; font-weight: 800; box-shadow: 0 10px 22px rgba(91,108,255,.22); }
.article-section h2 { font-size: 30px; }
.article-section p { color: #505B76; font-size: 16px; }
.check-list { list-style: none; padding: 0; margin: 22px 0 0; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.check-list li { position: relative; padding: 13px 14px 13px 40px; border-radius: 14px; background: #fff; border: 1px solid var(--line); }
.check-list li:before { content: "✓"; position: absolute; left: 14px; top: 12px; color: var(--brand); font-weight: 900; }
.article-side { display: grid; gap: 20px; position: sticky; top: 98px; }
.side-card { padding: 24px; }
.side-card h2 { font-size: 24px; }
.step-list { counter-reset: steps; list-style: none; padding: 0; display: grid; gap: 12px; }
.step-list li { counter-increment: steps; position: relative; padding-left: 42px; color: #56617B; }
.step-list li:before { content: counter(steps); position: absolute; left: 0; top: 0; width: 28px; height: 28px; border-radius: 10px; display: grid; place-content: center; background: #EEF1FF; color: var(--brand); font-weight: 800; }
.dark-card { background: #11182F; color: #EEF2FF; border-color: rgba(255,255,255,.08); }
.dark-card blockquote { margin: 14px 0; font-size: 18px; color: #fff; }
.dark-card p { color: #AEB7D2; }
.safety-card { background: #FFF7DF; border-color: rgba(255,200,87,.42); }
.safety-card p { color: #66572B; }
.side-links { display: flex; flex-wrap: wrap; gap: 8px; }
.side-links a { color: var(--brand); text-decoration: none; font-weight: 700; font-size: 14px; }
.center-action { text-align: center; margin-top: 30px; }
.footer-cta { padding: 46px 0; background: linear-gradient(135deg, #EEF1FF, #EAFBFF); }
.footer-cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.footer-cta h2 { font-size: clamp(28px, 4vw, 40px); margin-bottom: 8px; }
.footer-cta p { color: var(--muted); margin: 0; }
.site-footer { background: var(--footer); color: #EEF2FF; padding: 58px 0 92px; }
.footer-grid { display: grid; grid-template-columns: 1.7fr repeat(3, 1fr); gap: 34px; }
.footer-brand p { color: #AEB7D2; max-width: 420px; }
.site-footer h3 { color: #fff; font-size: 16px; margin-bottom: 14px; }
.site-footer a { color: #C9D0E5; text-decoration: none; display: block; margin: 8px 0; }
.site-footer a:hover { color: #fff; }
.footer-logo { display: inline-flex !important; margin-bottom: 18px !important; }
.footer-bottom { display: flex; justify-content: space-between; gap: 24px; align-items: center; margin-top: 42px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.1); color: #99A4C0; font-size: 13px; }
.footer-bottom p { margin: 0; }
.footer-bottom div { display: flex; gap: 18px; }
.footer-bottom a { display: inline; margin: 0; }
.mobile-bottom-nav { display: none; }
@media (max-width: 1080px) {
  .header-inner { gap: 18px; }
  .nav-core { gap: 2px; }
  .nav-core a { padding: 8px 8px; font-size: 14px; }
  .hero-grid, .inner-hero-grid, .split-section, .safety-grid { gap: 36px; }
  .article-layout { grid-template-columns: minmax(0, 1fr) 310px; }
}
@media (max-width: 900px) {
  .nav-core, .desktop-menu { display: none; }
  .mobile-only { display: inline-grid; }
  .header-inner { grid-template-columns: 42px 1fr auto; min-height: 66px; gap: 12px; }
  .site-logo { justify-self: center; }
  .site-logo strong { display: none; }
  .site-logo img { max-height: 40px; }
  .hero-grid, .inner-hero-grid, .split-section, .safety-grid { grid-template-columns: 1fr; }
  .hero-copy, .inner-hero-copy { text-align: center; }
  .hero-copy .lead, .inner-hero-copy .lead { margin-left: auto; margin-right: auto; }
  .hero-actions, .hero-points { justify-content: center; }
  .hero-visual img, .inner-hero-visual img { max-height: 440px; }
  .highlight-grid { grid-template-columns: repeat(2, 1fr); }
  .triple-grid, .review-grid { grid-template-columns: repeat(2, 1fr); }
  .article-layout { grid-template-columns: 1fr; }
  .article-side { position: static; grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1.5fr 1fr 1fr; }
  .footer-grid > div:last-child { grid-column: 2 / 4; }
}
@media (max-width: 680px) {
  .container, .header-inner { width: min(calc(100% - 24px), var(--max)); }
  .section-space { padding: 64px 0; }
  .compact-btn { min-height: 38px; padding: 0 14px; font-size: 13px; }
  .hero, .inner-hero { padding-top: 52px; }
  .hero-grid, .inner-hero-grid { gap: 30px; }
  h1 { font-size: 44px; }
  .lead { font-size: 16px; }
  .highlight-grid, .dual-grid, .triple-grid, .review-grid, .faq-grid { grid-template-columns: 1fr; }
  .highlight-item { padding: 17px; }
  .channel-pill { flex-basis: 100%; }
  .zone-card img { height: 230px; }
  .safety-band { padding: 24px 18px; }
  .safety-images img { height: 165px; }
  .notice-card { grid-template-columns: 1fr; text-align: center; }
  .notice-card .notice-mark { margin: 0 auto; }
  .article-section { padding-left: 36px; }
  .section-number { left: -18px; width: 36px; height: 36px; }
  .check-list { grid-template-columns: 1fr; }
  .article-side { grid-template-columns: 1fr; }
  .footer-cta-inner, .footer-bottom { flex-direction: column; align-items: flex-start; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-grid > div:last-child { grid-column: auto; }
  .site-footer { padding-bottom: 118px; }
  .mobile-bottom-nav { position: fixed; left: 10px; right: 10px; bottom: 10px; z-index: 9998; display: grid; grid-template-columns: repeat(4, 1fr); min-height: 62px; padding: 7px; border-radius: 20px; background: rgba(11,16,36,.95); backdrop-filter: blur(14px); box-shadow: 0 15px 34px rgba(11,16,36,.28); }
  .mobile-bottom-nav a { display: flex; flex-direction: column; align-items: center; justify-content: center; color: #DDE3F7; text-decoration: none; font-size: 11px; }
  .mobile-bottom-nav span { font-size: 18px; line-height: 1.1; color: #fff; }
  .drawer-nav { grid-template-columns: 1fr; }
}