:root {
    --bg: #F4FBFF;
    --surface: #FFFFFF;
    --surface-soft: #E8F7FF;
    --primary: #10AEEA;
    --primary-dark: #1688D8;
    --deep: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --border: rgba(16, 174, 234, 0.18);
    --shadow: 0 18px 48px rgba(21, 90, 157, 0.12);
    --radius-lg: 28px;
    --radius-md: 20px;
    --radius-sm: 14px;
    --header-h: 76px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    overflow-x: hidden;
    background: var(--bg);
    color: var(--text);
    font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}
body.drawer-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, textarea { font: inherit; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 9999; background: var(--deep); color: white; padding: 10px 16px; border-radius: 10px; }
.skip-link:focus { top: 12px; }
.site-header { position: sticky; top: 0; z-index: 1000; height: var(--header-h); background: rgba(255,255,255,.96); border-bottom: 1px solid var(--border); backdrop-filter: blur(14px); }
.header-inner { width: min(100% - 32px, 1360px); height: 100%; margin: 0 auto; display: flex; align-items: center; gap: clamp(12px, 1.6vw, 24px); min-width: 0; }
.brand-logo { flex: 0 0 auto; display: inline-flex; align-items: center; }
.brand-logo img { width: clamp(120px, 11vw, 168px); height: auto; object-fit: contain; }
.desktop-nav { flex: 1; min-width: 0; display: flex; justify-content: center; align-items: center; gap: clamp(5px, .72vw, 12px); overflow: hidden; }
.desktop-nav a { white-space: nowrap; font-size: clamp(12px, .88vw, 14px); color: var(--muted); padding: 9px clamp(4px, .42vw, 8px); border-radius: 10px; transition: .2s ease; }
.desktop-nav a:hover, .desktop-nav a.active { color: var(--primary-dark); background: var(--surface-soft); }
.header-actions { flex: 0 0 auto; display: flex; align-items: center; gap: 10px; }
.main-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 10px 22px; border: 0; border-radius: 999px; background: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%); color: #fff; font-weight: 700; box-shadow: 0 10px 24px rgba(22,136,216,.23); transition: transform .2s ease, box-shadow .2s ease; white-space: nowrap; }
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 14px 28px rgba(22,136,216,.3); }
.text-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 9px 20px; border: 1px solid var(--border); border-radius: 999px; color: var(--deep); background: #fff; font-weight: 700; }
.menu-toggle { display: none; width: 44px; height: 44px; border: 1px solid var(--border); background: #fff; border-radius: 13px; padding: 10px; cursor: pointer; }
.menu-toggle span { display: block; height: 2px; margin: 5px 0; background: var(--deep); border-radius: 2px; }
.drawer-backdrop { position: fixed; inset: 0; z-index: 1090; background: rgba(7,58,104,.34); opacity: 0; transition: opacity .22s ease; }
.drawer-backdrop.show { opacity: 1; }
.mobile-drawer { position: fixed; top: 0; right: 0; z-index: 1100; width: min(88vw, 380px); height: 100dvh; padding: 18px; background: #fff; transform: translateX(105%); transition: transform .25s ease; box-shadow: -24px 0 60px rgba(7,58,104,.2); overflow-y: auto; }
.mobile-drawer.open { transform: translateX(0); }
.drawer-head { display: flex; justify-content: space-between; align-items: center; padding-bottom: 14px; border-bottom: 1px solid var(--border); }
.drawer-logo img { width: 138px; height: auto; object-fit: contain; }
.drawer-close { width: 42px; height: 42px; border-radius: 12px; border: 1px solid var(--border); background: var(--surface-soft); color: var(--deep); font-size: 25px; cursor: pointer; }
.drawer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding: 18px 0; }
.drawer-nav a { padding: 11px 12px; border-radius: 12px; background: var(--bg); color: var(--text); font-size: 14px; }
.drawer-nav a.active { background: var(--surface-soft); color: var(--primary-dark); font-weight: 700; }
.drawer-register { width: 100%; }
main { min-height: 65vh; }
.section-shell { width: min(100% - 32px, 1200px); margin-inline: auto; }
.section-block { padding: clamp(42px, 7vw, 86px) 0; }
.section-heading { max-width: 760px; margin-bottom: 26px; }
.section-heading.center { margin-inline: auto; text-align: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--primary-dark); font-size: 13px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 22px; height: 3px; border-radius: 99px; background: linear-gradient(90deg, #35D7FF, #1688D8); }
h1, h2, h3 { margin: 0; color: var(--deep); line-height: 1.28; }
h1 { font-size: clamp(34px, 5.2vw, 68px); letter-spacing: -.035em; }
h2 { font-size: clamp(26px, 3.6vw, 44px); letter-spacing: -.02em; }
h3 { font-size: clamp(18px, 2vw, 23px); }
p { margin: 0; }
.section-heading p, .page-hero-copy > p { margin-top: 14px; color: var(--muted); font-size: clamp(15px, 1.7vw, 18px); }
.breadcrumb { width: min(100% - 32px, 1200px); margin: 22px auto 0; display: flex; gap: 9px; color: var(--muted); font-size: 13px; }
.breadcrumb a { color: var(--primary-dark); }
.page-hero { margin-top: 28px; margin-bottom: 28px; padding: clamp(28px, 5vw, 62px); border-radius: var(--radius-lg); background: linear-gradient(135deg, #fff 0%, #E8F7FF 100%); border: 1px solid var(--border); display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(280px, .92fr); gap: clamp(26px, 5vw, 64px); align-items: center; box-shadow: var(--shadow); overflow: hidden; }
.page-hero-copy { min-width: 0; }
.page-hero-copy h1 { margin-top: 10px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.page-hero-media { margin: 0; padding: 14px; border-radius: 24px; background: rgba(255,255,255,.75); border: 1px solid var(--border); }
.page-hero-media img { width: 100%; max-height: 420px; object-fit: contain; border-radius: 16px; }
.carousel-shell { width: min(100% - 32px, 1360px); margin: 22px auto 0; position: relative; border-radius: 28px; overflow: hidden; background: var(--surface-soft); box-shadow: var(--shadow); border: 1px solid var(--border); }
.carousel-track { display: flex; transition: transform .55s cubic-bezier(.22,.7,.26,1); }
.carousel-slide { flex: 0 0 100%; min-width: 0; background: var(--surface-soft); }
.carousel-slide img { width: 100%; height: clamp(230px, 46vw, 620px); object-fit: contain; }
.carousel-arrow { position: absolute; top: 50%; transform: translateY(-50%); z-index: 2; width: 46px; height: 46px; border: 1px solid rgba(255,255,255,.7); border-radius: 50%; background: rgba(7,58,104,.66); color: #fff; font-size: 25px; cursor: pointer; }
.carousel-arrow.prev { left: 16px; }
.carousel-arrow.next { right: 16px; }
.carousel-dots { position: absolute; left: 50%; bottom: 15px; transform: translateX(-50%); z-index: 3; display: flex; gap: 8px; }
.carousel-dot { width: 9px; height: 9px; border: 0; border-radius: 99px; background: rgba(255,255,255,.68); padding: 0; cursor: pointer; transition: .2s ease; }
.carousel-dot.active { width: 28px; background: #fff; }
.intro-panel { padding: clamp(42px, 7vw, 82px) 0 26px; display: grid; grid-template-columns: 1fr auto; gap: 28px; align-items: end; }
.intro-panel .copy { max-width: 810px; }
.intro-panel h1 { margin-top: 10px; }
.intro-panel p { color: var(--muted); font-size: 18px; margin-top: 15px; }
.quick-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.quick-card, .info-card, .review-card, .faq-item, .content-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md); box-shadow: 0 14px 34px rgba(21,90,157,.07); }
.quick-card { padding: 22px; display: flex; flex-direction: column; min-height: 220px; }
.quick-index { width: 38px; height: 38px; display: grid; place-items: center; margin-bottom: 16px; border-radius: 12px; background: var(--surface-soft); color: var(--primary-dark); font-weight: 800; }
.quick-card p, .info-card p, .content-card p { color: var(--muted); margin-top: 10px; }
.card-link { margin-top: auto; padding-top: 18px; color: var(--primary-dark); font-weight: 700; }
.card-link::after { content: " →"; }
.content-split { display: grid; grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr); gap: clamp(22px, 4vw, 50px); align-items: center; }
.content-split.reverse .media-card { order: 2; }
.media-card { margin: 0; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 16px; box-shadow: var(--shadow); }
.media-card img { width: 100%; max-height: 480px; object-fit: contain; border-radius: 18px; }
.copy-stack > * + * { margin-top: 15px; }
.copy-stack p { color: var(--muted); }
.pill-list { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 20px; }
.pill { padding: 7px 12px; background: var(--surface-soft); color: var(--deep); border-radius: 999px; font-size: 13px; font-weight: 700; }
.info-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.info-card { padding: 24px; }
.info-card .number { display: inline-grid; place-items: center; width: 40px; height: 40px; border-radius: 12px; background: var(--surface-soft); color: var(--primary-dark); font-weight: 800; margin-bottom: 16px; }
.product-band { background: linear-gradient(180deg, rgba(232,247,255,.86), rgba(244,251,255,.4)); border-block: 1px solid var(--border); }
.review-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.review-card { padding: 24px; }
.review-mark { font-size: 48px; line-height: .8; color: var(--primary); opacity: .45; }
.review-card p { color: var(--text); margin: 10px 0 18px; }
.review-card strong { color: var(--deep); font-size: 14px; }
.compliance-panel { margin-top: 18px; margin-bottom: 72px; padding: clamp(28px, 4vw, 44px); border-radius: var(--radius-lg); background: #073A68; color: #EAF8FF; display: grid; grid-template-columns: .7fr 1.3fr; gap: 30px; align-items: start; }
.compliance-panel h2 { color: #fff; margin-top: 8px; }
.compliance-panel .eyebrow { color: #9EEAFF; }
.compliance-panel .eyebrow::before { background: #35D7FF; }
.compliance-copy { display: grid; gap: 12px; color: #D9F3FF; }
.faq-list { display: grid; gap: 14px; }
.faq-item { padding: 22px 24px; }
.faq-item h3 { font-size: 18px; }
.faq-item p { color: var(--muted); margin-top: 9px; }
.notice-list { display: grid; gap: 12px; padding: 0; list-style: none; margin: 20px 0 0; }
.notice-list li { position: relative; padding-left: 25px; color: var(--muted); }
.notice-list li::before { content: "✓"; position: absolute; left: 0; color: var(--primary-dark); font-weight: 800; }
.contact-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.contact-card { padding: 28px; border-radius: var(--radius-md); background: #fff; border: 1px solid var(--border); }
.contact-card p { color: var(--muted); margin-top: 10px; }
.site-footer { margin-top: 70px; background: #073A68; color: #EAF8FF; }
.footer-inner { width: min(100% - 32px, 1200px); margin: 0 auto; padding: 54px 0 38px; display: grid; grid-template-columns: 1fr 1.5fr; gap: 60px; }
.footer-brand img { width: 150px; height: auto; object-fit: contain; filter: brightness(0) invert(1); }
.footer-brand p { max-width: 430px; margin-top: 16px; color: #CBEFFF; }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.footer-links h3 { color: #fff; font-size: 16px; margin-bottom: 10px; }
.footer-links a { display: block; color: #CBEFFF; padding: 4px 0; font-size: 14px; }
.footer-links a:hover { color: #fff; }
.footer-notice { border-top: 1px solid rgba(234,248,255,.15); padding: 20px max(16px, calc((100vw - 1200px)/2)); display: flex; justify-content: space-between; gap: 30px; color: #B9E8FA; font-size: 12px; }
@media (max-width: 1179px) {
    .desktop-nav { display: none; }
    .header-inner { justify-content: space-between; }
    .menu-toggle { display: block; }
}
@media (max-width: 900px) {
    .quick-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .info-grid, .review-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .page-hero, .content-split, .compliance-panel, .footer-inner { grid-template-columns: 1fr; }
    .content-split.reverse .media-card { order: 0; }
    .page-hero-media img { max-height: 360px; }
    .footer-inner { gap: 34px; }
}
@media (max-width: 640px) {
    :root { --header-h: 68px; }
    .header-inner, .section-shell, .breadcrumb, .carousel-shell { width: min(100% - 24px, 1200px); }
    .brand-logo img { width: 118px; }
    .header-register { min-height: 40px; padding: 8px 16px; }
    .menu-toggle { width: 40px; height: 40px; }
    .carousel-shell { margin-top: 14px; border-radius: 18px; }
    .carousel-slide img { height: clamp(190px, 58vw, 330px); }
    .carousel-arrow { width: 38px; height: 38px; font-size: 20px; }
    .carousel-arrow.prev { left: 9px; }
    .carousel-arrow.next { right: 9px; }
    .intro-panel { grid-template-columns: 1fr; align-items: start; }
    .quick-grid, .info-grid, .review-grid, .contact-grid { grid-template-columns: 1fr; }
    .quick-card { min-height: auto; }
    .page-hero { padding: 24px; border-radius: 20px; margin-top: 18px; }
    .page-hero-copy h1 { font-size: 38px; }
    .section-block { padding: 48px 0; }
    .footer-links { grid-template-columns: 1fr 1fr; }
    .footer-notice { flex-direction: column; gap: 8px; }
    .drawer-nav { grid-template-columns: 1fr 1fr; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}