:root {
    --red: #C90000;
    --red-dark: #A80000;
    --red-soft: rgba(201, 0, 0, .08);
    --text: #1F2329;
    --muted: #5D6673;
    --soft-text: #8A93A0;
    --line: rgba(201, 0, 0, .12);
    --gray: #F6F7F9;
    --gray-2: #F1F3F6;
    --white: #FFFFFF;
    --footer: #11151C;
    --shadow: 0 12px 30px rgba(18, 28, 45, .08);
    --radius: 18px;
    --header-h: 74px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--white); color: var(--text); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif; line-height: 1.75; padding-top: var(--header-h); }
body.drawer-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, textarea { font: inherit; }
.site-header { position: fixed; inset: 0 0 auto; z-index: 1000; background: rgba(255,255,255,.96); backdrop-filter: blur(10px); border-bottom: 1px solid rgba(201,0,0,.08); }
.header-inner { max-width: 1440px; min-height: var(--header-h); margin: 0 auto; padding: 0 24px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.logo { flex: 0 0 auto; }
.logo img { max-height: 52px; width: auto; }
.nav-core { display: flex; align-items: center; justify-content: center; gap: 10px; white-space: nowrap; flex-wrap: nowrap; min-width: 0; }
.nav-core a { color: var(--text); background: var(--gray); border-radius: 999px; padding: 9px 16px; font-weight: 700; transition: .2s ease; }
.nav-core a:hover, .nav-core a.active { color: var(--red); background: var(--red-soft); }
.main-btn, .light-btn, .ghost-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; border-radius: 999px; padding: 10px 22px; font-weight: 800; border: 1px solid transparent; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.main-btn { background: linear-gradient(180deg, #F12B2B 0%, #C90000 55%, #A80000 100%); color: #fff; box-shadow: 0 10px 20px rgba(201,0,0,.18); }
.main-btn:hover, .light-btn:hover, .ghost-btn:hover { transform: translateY(-1px); }
.header-register { flex: 0 0 auto; min-width: 88px; }
.ghost-btn { color: var(--red); border-color: var(--line); background: #fff; }
.light-btn { background: #fff; color: var(--red); }
.menu-toggle { display: none; width: 42px; height: 42px; border: 0; border-radius: 12px; background: var(--gray); padding: 10px; cursor: pointer; }
.menu-toggle span { display: block; height: 2px; background: var(--text); margin: 4px 0; border-radius: 2px; }
.site-shell { max-width: 1440px; margin: 0 auto; padding: 24px; display: grid; grid-template-columns: 210px minmax(0, 1fr); gap: 28px; }
.side-column { min-width: 0; }
.side-category { position: sticky; top: 96px; background: #fff; border: 1px solid rgba(201,0,0,.1); border-radius: 18px; box-shadow: var(--shadow); padding: 16px; max-height: calc(100vh - 116px); overflow: auto; }
.side-category strong { display: block; color: var(--red); margin: 4px 8px 10px; font-size: 15px; }
.side-category a { display: block; color: var(--text); border-radius: 12px; padding: 8px 10px; margin: 2px 0; font-size: 14px; }
.side-category a:hover, .side-category a.active { color: var(--red); background: var(--red-soft); }
.site-main { min-width: 0; }
.banner-slider { max-width: 1180px; margin: 0 auto 34px; border-radius: 22px; background: #F7F8FA; box-shadow: var(--shadow); overflow: hidden; position: relative; aspect-ratio: 1180/340; min-height: 260px; max-height: 360px; }
.banner-track, .banner-slide { width: 100%; height: 100%; }
.banner-slide { position: absolute; inset: 0; opacity: 0; pointer-events: none; transition: opacity .5s ease; }
.banner-slide.active { opacity: 1; pointer-events: auto; }
.banner-slide img { width: 100%; height: 100%; object-fit: contain; background: #F7F8FA; }
.banner-caption, .banner-text, .slide-title, .slide-desc, .slide-content, .slide-card, .banner-card { display: none !important; }
.slider-arrow { position: absolute; top: 50%; transform: translateY(-50%); width: 44px; height: 44px; border: 0; border-radius: 50%; background: rgba(255,255,255,.88); color: var(--red); font-size: 34px; line-height: 1; cursor: pointer; box-shadow: 0 8px 20px rgba(0,0,0,.1); }
.slider-arrow.prev { left: 18px; }
.slider-arrow.next { right: 18px; }
.slider-dots { position: absolute; left: 50%; bottom: 16px; transform: translateX(-50%); display: flex; gap: 8px; }
.slider-dots button { width: 9px; height: 9px; border: 0; border-radius: 50%; background: rgba(255,255,255,.72); padding: 0; cursor: pointer; box-shadow: 0 0 0 1px rgba(0,0,0,.12); }
.slider-dots button.active { width: 26px; border-radius: 999px; background: var(--red); }
.section-block { margin: 0 auto 34px; padding: 32px; background: #fff; border: 1px solid var(--line); border-radius: 22px; box-shadow: var(--shadow); }
.section-block.soft { background: var(--gray); border-color: transparent; }
.section-heading { display: flex; gap: 16px; align-items: flex-start; margin-bottom: 24px; }
.section-heading h2, .inner-hero h1, .intro-copy h1, .feature-copy h2, .about-brief h2, .security-strip h2, .compliance-banner h2 { color: var(--red); margin: 0; line-height: 1.25; }
.section-heading h2 { font-size: clamp(25px, 3vw, 36px); }
.section-heading p { color: var(--muted); margin: 6px 0 0; }
.section-index { min-width: 48px; height: 30px; padding: 0 10px; display: inline-flex; align-items: center; justify-content: center; border-radius: 999px; background: var(--red-soft); color: var(--red); font-weight: 800; font-size: 13px; }
.eyebrow { display: inline-block; color: var(--red); background: var(--red-soft); border-radius: 999px; padding: 6px 12px; font-weight: 800; font-size: 13px; letter-spacing: .08em; margin-bottom: 12px; }
.home-intro { display: grid; grid-template-columns: minmax(280px, .86fr) minmax(0, 1.14fr); gap: 32px; align-items: center; }
.intro-media img, .feature-media img, .inner-hero-media img { width: 100%; max-height: 300px; object-fit: contain; background: var(--gray); border-radius: 18px; }
.intro-copy h1 { font-size: clamp(34px, 5vw, 56px); }
.intro-copy p { color: var(--muted); margin: 14px 0 0; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 22px; }
.service-summary { margin: 0 auto 34px; display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 14px; padding: 22px; border-radius: 22px; background: linear-gradient(135deg, #E00000, #A80000); color: #fff; box-shadow: 0 16px 34px rgba(201,0,0,.18); }
.service-summary article { padding: 12px; border-right: 1px solid rgba(255,255,255,.18); }
.service-summary article:last-child { border-right: 0; }
.service-summary strong { opacity: .8; }
.service-summary h2 { margin: 4px 0; font-size: 20px; }
.service-summary p { margin: 0; opacity: .9; font-size: 14px; }
.quick-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 14px; }
.quick-grid a { position: relative; min-height: 142px; padding: 20px; border: 1px solid var(--line); border-radius: 18px; background: #fff; transition: .2s ease; }
.quick-grid a:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.quick-grid strong, .split-links b { display: block; color: var(--red); font-size: 18px; }
.quick-grid span, .split-links span { display: block; color: var(--muted); margin-top: 8px; font-size: 14px; }
.quick-grid em { position: absolute; right: 18px; bottom: 16px; color: var(--red); font-style: normal; font-size: 22px; }
.content-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 18px; }
.horizontal-cards { display: grid; grid-template-columns: repeat(5, minmax(180px,1fr)); gap: 14px; overflow-x: auto; padding-bottom: 6px; }
.info-card, .review-card, .card, .zone-card { background: #fff; border: 1px solid rgba(201,0,0,.10); box-shadow: var(--shadow); border-radius: 18px; overflow: hidden; }
.info-card img, .zone-card img, .content-img { width: 100%; height: 190px; max-height: 230px; object-fit: contain; background: #F7F8FA; }
.horizontal-cards .info-card img { height: 150px; }
.card-body { padding: 20px; }
.card-body h3 { margin: 6px 0 8px; color: var(--red); font-size: 20px; }
.card-body p { margin: 0; color: var(--muted); }
.tag { display: inline-flex; padding: 4px 9px; border-radius: 999px; background: var(--red-soft); color: var(--red); font-size: 12px; font-weight: 800; }
.text-link { display: inline-flex; margin-top: 14px; color: var(--red); font-weight: 800; }
.split-links { display: grid; grid-template-columns: repeat(5, minmax(0,1fr)); gap: 14px; }
.split-links a { padding: 18px; border-radius: 16px; border: 1px solid var(--line); background: #fff; }
.app-feature { display: grid; grid-template-columns: 1.2fr .8fr; gap: 30px; align-items: center; }
.feature-copy p { color: var(--muted); }
.security-strip, .compliance-banner { margin: 0 auto 34px; display: grid; grid-template-columns: minmax(0,1fr) minmax(280px,.85fr) auto; gap: 24px; align-items: center; padding: 28px 30px; border-radius: 22px; color: #fff; background: linear-gradient(135deg, #C90000, #7F0000); }
.security-strip span, .compliance-banner span { font-size: 13px; font-weight: 800; opacity: .8; }
.security-strip h2, .compliance-banner h2 { color: #fff; margin-top: 4px; }
.security-strip p, .compliance-banner p { margin: 0; opacity: .92; }
.review-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 16px; }
.review-card { margin: 0; padding: 22px; }
.review-card p { color: var(--muted); margin: 0; }
.review-card footer { color: var(--soft-text); font-size: 13px; margin-top: 14px; }
.review-mark { color: var(--red); font-size: 34px; font-weight: 900; line-height: 1; }
.faq-list { display: grid; gap: 12px; }
.faq-list details { border: 1px solid var(--line); border-radius: 14px; background: #fff; padding: 0 18px; }
.faq-list summary { cursor: pointer; padding: 15px 0; font-weight: 800; color: var(--text); }
.faq-list p { color: var(--muted); margin: 0; padding: 0 0 18px; }
.about-brief { margin: 0 auto 34px; display: flex; gap: 30px; align-items: center; justify-content: space-between; padding: 30px; border: 1px solid var(--line); border-radius: 22px; background: #fff; box-shadow: var(--shadow); }
.about-brief p { color: var(--muted); max-width: 850px; }
.inner-hero { margin: 0 auto 34px; padding: 38px; display: grid; grid-template-columns: minmax(0,1.2fr) minmax(280px,.8fr); align-items: center; gap: 34px; border-radius: 24px; background: linear-gradient(135deg, #fff, #F7F8FA); border: 1px solid var(--line); box-shadow: var(--shadow); }
.inner-hero h1 { font-size: clamp(34px, 5vw, 54px); }
.inner-hero p { color: var(--muted); font-size: 17px; }
.prose-columns { columns: 2 320px; column-gap: 34px; }
.prose-columns p { break-inside: avoid; margin: 0 0 16px; color: var(--muted); }
.step-list { counter-reset: step; list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.step-list li { counter-increment: step; display: flex; gap: 14px; align-items: flex-start; padding: 16px; border-radius: 14px; background: #fff; border: 1px solid var(--line); }
.step-list li span::before { content: counter(step); display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: var(--red); color: #fff; font-weight: 800; }
.step-list p { margin: 2px 0 0; color: var(--muted); }
.site-footer { background: var(--footer); color: #E7ECF3; margin-top: 40px; }
.footer-grid { max-width: 1440px; margin: 0 auto; padding: 48px 24px 34px; display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 34px; }
.footer-grid h2 { color: #fff; font-size: 17px; margin: 0 0 14px; }
.footer-grid a { display: block; color: #E7ECF3; opacity: .86; margin: 8px 0; }
.footer-grid p { opacity: .76; margin: 0; }
.footer-logo img { max-height: 50px; width: auto; margin-bottom: 16px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); text-align: center; padding: 18px 24px; color: rgba(231,236,243,.68); font-size: 13px; }
.mobile-drawer { position: fixed; z-index: 1200; top: 0; bottom: 0; left: 0; width: min(84vw, 320px); background: #fff; transform: translateX(-105%); transition: transform .24s ease; box-shadow: 18px 0 50px rgba(0,0,0,.16); overflow: auto; }
.mobile-drawer.open { transform: translateX(0); }
.drawer-mask { position: fixed; z-index: 1100; inset: 0; background: rgba(17,21,28,.5); opacity: 0; transition: opacity .22s ease; }
.drawer-mask.show { opacity: 1; }
.drawer-head { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 12px 16px; border-bottom: 1px solid #ECEFF3; }
.drawer-logo img { max-height: 46px; width: auto; }
.drawer-close { width: 40px; height: 40px; border: 0; border-radius: 12px; background: var(--gray); color: var(--text); font-size: 28px; cursor: pointer; }
.drawer-nav { padding: 12px; }
.drawer-nav a { display: block; padding: 11px 12px; border-radius: 12px; }
.drawer-nav a.active { color: var(--red); background: var(--red-soft); }
.mobile-bottom-nav { display: none; }
@media (max-width: 1180px) {
    .site-shell { grid-template-columns: 190px minmax(0,1fr); gap: 20px; padding: 20px; }
    .content-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .split-links { grid-template-columns: repeat(3, minmax(0,1fr)); }
    .nav-core { gap: 6px; }
    .nav-core a { padding: 8px 12px; font-size: 14px; }
}
@media (max-width: 980px) {
    :root { --header-h: 68px; }
    .header-inner { min-height: var(--header-h); padding: 0 14px; gap: 12px; }
    .menu-toggle { display: block; flex: 0 0 auto; }
    .nav-core { display: none; }
    .logo { position: absolute; left: 50%; transform: translateX(-50%); }
    .logo img { max-height: 46px; }
    .header-register { min-width: 74px; min-height: 40px; padding: 8px 16px; margin-left: auto; }
    .site-shell { display: block; padding: 18px; }
    .side-column { display: none; }
    .banner-slider { min-height: 0; max-height: none; aspect-ratio: 16/5.8; margin-bottom: 24px; border-radius: 18px; }
    .service-summary { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .service-summary article:nth-child(2) { border-right: 0; }
    .home-intro, .app-feature, .inner-hero { grid-template-columns: 1fr; }
    .inner-hero-media { order: -1; }
    .security-strip, .compliance-banner { grid-template-columns: 1fr; }
    .review-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .footer-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
}
@media (max-width: 640px) {
    body { padding-bottom: 72px; }
    .site-shell { padding: 12px; }
    .section-block, .inner-hero { padding: 22px 18px; margin-bottom: 20px; border-radius: 18px; }
    .banner-slider { aspect-ratio: 16/6.4; min-height: 150px; max-height: 210px; border-radius: 14px; }
    .slider-arrow { width: 36px; height: 36px; font-size: 28px; }
    .slider-arrow.prev { left: 10px; }
    .slider-arrow.next { right: 10px; }
    .slider-dots { bottom: 10px; }
    .home-intro, .inner-hero { gap: 20px; }
    .intro-media img, .feature-media img, .inner-hero-media img { max-height: 230px; }
    .intro-copy h1, .inner-hero h1 { font-size: 34px; }
    .service-summary { grid-template-columns: 1fr; padding: 16px; }
    .service-summary article { border-right: 0; border-bottom: 1px solid rgba(255,255,255,.18); }
    .service-summary article:last-child { border-bottom: 0; }
    .quick-grid, .content-grid, .review-grid, .split-links { grid-template-columns: 1fr; }
    .horizontal-cards { grid-template-columns: repeat(5, minmax(210px, 78vw)); }
    .info-card img, .zone-card img, .content-img { height: 160px; max-height: 190px; }
    .horizontal-cards .info-card img { height: 140px; }
    .section-heading { gap: 10px; }
    .section-heading h2 { font-size: 26px; }
    .about-brief { align-items: flex-start; flex-direction: column; padding: 22px 18px; }
    .footer-grid { grid-template-columns: 1fr; padding: 36px 20px 24px; }
    .mobile-bottom-nav { position: fixed; z-index: 990; left: 0; right: 0; bottom: 0; height: 64px; display: grid; grid-template-columns: repeat(4, 1fr); background: #fff; border-top: 1px solid #E4E7EB; padding-bottom: env(safe-area-inset-bottom); }
    .mobile-bottom-nav a { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; color: var(--muted); font-size: 12px; }
    .mobile-bottom-nav a span { font-size: 15px; font-weight: 800; line-height: 1; }
    .mobile-bottom-nav a.active { color: var(--red); }
    .prose-columns { columns: 1; }
}