:root {
    --bg: #F4FBFF;
    --nav: #FFFFFF;
    --soft: #E8F7FF;
    --card: #FFFFFF;
    --title: #11AEEA;
    --primary: #1688D8;
    --deep: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --border: rgba(17,174,234,.18);
    --gradient: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%);
    --footer: #073A68;
    --footer-text: #EAF8FF;
    --shadow: 0 18px 45px rgba(20,105,156,.12);
    --radius: 22px;
    --header-h: 76px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; padding-top: var(--header-h); background: var(--bg); color: var(--text); font-family: "Microsoft YaHei", "PingFang SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; line-height: 1.75; overflow-x: hidden; }
body.drawer-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; }
.container { width: min(100% - 32px, 1240px); margin-inline: auto; }
.section { padding: clamp(58px, 7vw, 96px) 0; }
.soft-section { background: var(--soft); }
.skip-link { position: fixed; top: 8px; left: 8px; z-index: 9999; transform: translateY(-150%); padding: 10px 16px; border-radius: 10px; background: var(--footer); color: #fff; }
.skip-link:focus { transform: translateY(0); }
.site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; height: var(--header-h); background: rgba(255,255,255,.95); border-bottom: 1px solid var(--border); backdrop-filter: blur(14px); }
.header-inner { width: min(100% - 32px, 1360px); height: 100%; margin-inline: auto; display: flex; align-items: center; gap: clamp(14px, 1.8vw, 26px); min-width: 0; }
.brand-logo { flex: 0 0 auto; display: inline-flex; align-items: center; }
.brand-logo img { width: clamp(96px, 9vw, 132px); height: 44px; object-fit: contain; }
.desktop-nav { flex: 1 1 auto; min-width: 0; display: flex; align-items: center; justify-content: center; gap: clamp(8px, 1.15vw, 18px); white-space: nowrap; }
.desktop-nav a { position: relative; padding: 10px 0; font-size: clamp(13px, .92vw, 15px); font-weight: 700; color: var(--deep); transition: color .2s ease; }
.desktop-nav a::after { content: ""; position: absolute; left: 50%; bottom: 4px; width: 0; height: 2px; border-radius: 999px; background: var(--gradient); transform: translateX(-50%); transition: width .2s ease; }
.desktop-nav a:hover, .desktop-nav a.is-active { color: var(--title); }
.desktop-nav a:hover::after, .desktop-nav a.is-active::after { width: 100%; }
.header-actions { flex: 0 0 auto; display: flex; align-items: center; gap: 12px; }
.main-btn, .ghost-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 10px 22px; border-radius: 999px; font-weight: 800; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; white-space: nowrap; }
.main-btn { color: #fff; background: var(--gradient); box-shadow: 0 10px 24px rgba(22,136,216,.24); }
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 14px 28px rgba(22,136,216,.3); }
.ghost-btn { color: var(--deep); background: #fff; border: 1px solid var(--border); }
.ghost-btn:hover { transform: translateY(-2px); background: var(--soft); }
.text-link { display: inline-flex; align-items: center; gap: 7px; color: var(--primary); font-weight: 800; }
.text-link:hover { color: var(--title); }
.menu-toggle { display: none; width: 46px; height: 46px; border: 1px solid var(--border); border-radius: 14px; background: #fff; padding: 11px; cursor: pointer; }
.menu-toggle span { display: block; width: 100%; height: 2px; margin: 5px 0; border-radius: 99px; background: var(--deep); }
.drawer-overlay { position: fixed; inset: 0; z-index: 1090; background: rgba(7,58,104,.38); backdrop-filter: blur(4px); }
.mobile-drawer { position: fixed; top: 0; right: 0; z-index: 1100; width: min(88vw, 390px); height: 100dvh; padding: 22px; background: #fff; transform: translateX(105%); transition: transform .28s ease; overflow-y: auto; box-shadow: -20px 0 50px rgba(7,58,104,.18); }
.mobile-drawer.is-open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-bottom: 18px; border-bottom: 1px solid var(--border); }
.drawer-logo img { width: 120px; height: 44px; object-fit: contain; }
.drawer-close { width: 42px; height: 42px; border: 0; border-radius: 50%; background: var(--soft); color: var(--deep); font-size: 28px; cursor: pointer; }
.drawer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; padding: 22px 0; }
.drawer-nav a { padding: 12px 14px; border-radius: 12px; background: var(--bg); color: var(--deep); font-weight: 700; text-align: center; }
.drawer-nav a:hover, .drawer-nav a.is-active { color: #fff; background: var(--gradient); }
.drawer-register { width: 100%; }
.home-slider { padding: clamp(24px, 3vw, 42px) 0 0; }
.slider { position: relative; overflow: hidden; border-radius: clamp(18px, 2.2vw, 30px); background: var(--soft); box-shadow: var(--shadow); aspect-ratio: 16 / 6.8; min-height: 260px; }
.slider-track { position: relative; width: 100%; height: 100%; }
.slide { position: absolute; inset: 0; opacity: 0; pointer-events: none; transition: opacity .6s ease; }
.slide.is-active { opacity: 1; pointer-events: auto; }
.slide img { width: 100%; height: 100%; object-fit: contain; background: #eaf8ff; }
.slider-arrow { position: absolute; top: 50%; z-index: 3; width: 46px; height: 46px; border: 1px solid rgba(255,255,255,.8); border-radius: 50%; background: rgba(7,58,104,.45); color: #fff; font-size: 32px; line-height: 1; cursor: pointer; transform: translateY(-50%); backdrop-filter: blur(6px); }
.slider-prev { left: 18px; }
.slider-next { right: 18px; }
.slider-dots { position: absolute; left: 50%; bottom: 18px; z-index: 3; display: flex; gap: 8px; transform: translateX(-50%); }
.slider-dots button { width: 9px; height: 9px; padding: 0; border: 0; border-radius: 50%; background: rgba(255,255,255,.65); cursor: pointer; }
.slider-dots button.is-active { width: 24px; border-radius: 999px; background: #fff; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 12px; color: var(--title); font-size: 14px; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 26px; height: 3px; border-radius: 99px; background: var(--gradient); }
h1, h2, h3 { margin: 0 0 .55em; color: var(--deep); line-height: 1.28; }
h1 { font-size: clamp(34px, 5vw, 62px); letter-spacing: -.035em; }
h2 { font-size: clamp(27px, 3.4vw, 42px); letter-spacing: -.025em; }
h3 { font-size: clamp(19px, 2vw, 24px); }
p { margin: 0 0 1em; }
.lead { color: var(--text); font-size: clamp(17px, 1.6vw, 21px); line-height: 1.85; }
.intro-section { padding-top: clamp(60px, 7vw, 96px); }
.split-layout { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(320px, .92fr); align-items: center; gap: clamp(32px, 6vw, 82px); }
.content-figure, .page-hero__media { margin: 0; overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow); }
.content-figure img, .page-hero__media img { width: 100%; max-height: 520px; object-fit: contain; }
.hero-actions, .cta-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; margin-top: 28px; }
.section-heading { max-width: 760px; margin-bottom: 34px; }
.section-heading p { color: var(--muted); font-size: 17px; }
.card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.quick-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.feature-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.info-card { position: relative; overflow: hidden; padding: 26px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--card); box-shadow: 0 14px 38px rgba(20,105,156,.08); transition: transform .24s ease, box-shadow .24s ease; }
.info-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.info-card p { color: var(--muted); }
.card-image { width: calc(100% + 52px); max-width: none; height: 210px; margin: -26px -26px 22px; object-fit: contain; background: var(--soft); }
.card-label { display: inline-flex; margin-bottom: 12px; padding: 5px 10px; border-radius: 999px; background: var(--soft); color: var(--primary); font-size: 13px; font-weight: 800; }
.multi-column-copy { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 22px; }
.multi-column-copy article, .large-card, .prose-card { padding: clamp(26px, 3vw, 38px); border: 1px solid var(--border); border-radius: var(--radius); background: #fff; box-shadow: 0 14px 38px rgba(20,105,156,.08); }
.app-highlight { background: linear-gradient(180deg, var(--bg), #e8f7ff); }
.two-column-sections, .prose-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 24px; }
.review-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 20px; }
.review-card { margin: 0; padding: 28px; border: 1px solid var(--border); border-radius: var(--radius); background: #fff; box-shadow: 0 14px 36px rgba(20,105,156,.08); }
.review-card p { color: var(--text); font-size: 16px; }
.review-card footer { display: flex; flex-direction: column; gap: 2px; margin-top: 20px; }
.review-card strong { color: var(--deep); }
.review-card span { color: var(--muted); font-size: 14px; }
.stats-panel { display: grid; gap: 16px; }
.stats-panel div { padding: 24px; border: 1px solid var(--border); border-radius: 18px; background: #fff; box-shadow: 0 10px 28px rgba(20,105,156,.08); }
.stats-panel strong, .stats-panel span { display: block; }
.stats-panel strong { color: var(--title); font-size: 22px; }
.stats-panel span { color: var(--muted); }
.faq-list { display: grid; gap: 14px; }
.faq-list details { border: 1px solid var(--border); border-radius: 16px; background: #fff; box-shadow: 0 10px 26px rgba(20,105,156,.06); }
.faq-list summary { position: relative; padding: 20px 56px 20px 22px; color: var(--deep); font-weight: 800; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; right: 22px; top: 50%; color: var(--primary); font-size: 24px; transform: translateY(-50%); }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { padding: 0 22px 22px; color: var(--muted); }
.compact-faq { grid-template-columns: repeat(2, minmax(0,1fr)); }
.center-link { display: flex; justify-content: center; margin-top: 28px; }
.page-hero { position: relative; overflow: hidden; padding-top: clamp(60px, 7vw, 96px); background: radial-gradient(circle at 85% 20%, rgba(53,215,255,.25), transparent 32%), linear-gradient(180deg, #effaff 0%, var(--bg) 100%); }
.page-hero__grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(320px, .95fr); align-items: center; gap: clamp(34px, 6vw, 80px); }
.page-hero__panel { padding: clamp(28px, 4vw, 48px); border: 1px solid var(--border); border-radius: var(--radius); background: rgba(255,255,255,.82); box-shadow: var(--shadow); }
.page-hero__panel strong { display: block; margin-bottom: 10px; color: var(--title); font-size: clamp(24px, 3vw, 34px); }
.page-hero__panel p { color: var(--muted); }
.steps { display: grid; gap: 18px; margin: 0; padding: 0; list-style: none; }
.steps li { display: grid; grid-template-columns: 48px 1fr; gap: 16px; padding: 20px; border: 1px solid var(--border); border-radius: 16px; background: #fff; }
.step-number { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 14px; color: #fff; background: var(--gradient); font-weight: 900; }
.steps h3 { margin-bottom: 4px; font-size: 19px; }
.steps p { margin: 0; color: var(--muted); }
.service-reminder { align-self: stretch; padding: clamp(30px, 4vw, 48px); border-radius: var(--radius); background: var(--footer); color: var(--footer-text); box-shadow: var(--shadow); }
.service-reminder h2 { color: #fff; }
.service-reminder p { color: rgba(234,248,255,.84); }
.service-reminder .text-link { color: #72dfff; }
.compliance-box { display: grid; grid-template-columns: .85fr 1.15fr; gap: 30px; padding: clamp(30px, 4vw, 52px); border: 1px solid rgba(255,255,255,.2); border-radius: var(--radius); background: var(--footer); color: var(--footer-text); box-shadow: var(--shadow); }
.compliance-box h2 { color: #fff; }
.compliance-copy p { color: rgba(234,248,255,.84); }
.cta-box { display: flex; align-items: center; justify-content: space-between; gap: 28px; padding: clamp(30px, 4vw, 52px); border: 1px solid var(--border); border-radius: var(--radius); background: linear-gradient(135deg, #fff 0%, #e8f7ff 100%); box-shadow: var(--shadow); }
.cta-box p { max-width: 720px; color: var(--muted); }
.site-footer { padding: 62px 0 24px; background: var(--footer); color: var(--footer-text); }
.footer-grid { display: grid; grid-template-columns: 1.35fr .75fr .75fr 1fr; gap: 34px; }
.footer-brand img { width: 130px; height: 48px; margin-bottom: 20px; object-fit: contain; filter: brightness(0) invert(1); }
.footer-brand p, .footer-note p { color: rgba(234,248,255,.78); }
.footer-links h2, .footer-note h2 { color: #fff; font-size: 18px; }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { color: rgba(234,248,255,.8); }
.footer-links a:hover { color: #72dfff; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; margin-top: 42px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.15); color: rgba(234,248,255,.65); font-size: 14px; }
@media (max-width: 1180px) {
    .desktop-nav { display: none; }
    .menu-toggle { display: inline-block; }
    .header-inner { justify-content: space-between; }
    .quick-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
    .feature-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
}
@media (max-width: 900px) {
    :root { --header-h: 70px; }
    .split-layout, .page-hero__grid, .compliance-box { grid-template-columns: 1fr; }
    .reverse-mobile figure { order: 2; }
    .card-grid, .review-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .quick-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .multi-column-copy, .footer-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .slider { aspect-ratio: 16 / 8.5; }
    .page-hero__media { max-width: 720px; }
    .cta-box { align-items: flex-start; flex-direction: column; }
}
@media (max-width: 640px) {
    .container, .header-inner { width: min(100% - 24px, 1240px); }
    .header-register { padding-inline: 18px; }
    .brand-logo img { width: 102px; }
    .section { padding: 52px 0; }
    .slider { min-height: 220px; aspect-ratio: 4 / 3; border-radius: 18px; }
    .slider-arrow { width: 40px; height: 40px; font-size: 28px; }
    .slider-prev { left: 10px; }
    .slider-next { right: 10px; }
    .slider-dots { bottom: 12px; }
    .card-grid, .quick-grid, .feature-grid, .review-grid, .multi-column-copy, .two-column-sections, .prose-grid, .compact-faq, .footer-grid { grid-template-columns: 1fr; }
    .info-card { padding: 22px; }
    .card-image { width: calc(100% + 44px); height: 190px; margin: -22px -22px 20px; }
    .drawer-nav { grid-template-columns: 1fr 1fr; }
    .footer-bottom { flex-direction: column; }
    .cta-actions { width: 100%; }
    .cta-actions a { flex: 1; }
}
@media (max-width: 400px) {
    .header-register { padding-inline: 15px; min-height: 42px; }
    .menu-toggle { width: 42px; height: 42px; }
    .drawer-nav { grid-template-columns: 1fr; }
    .slider { min-height: 190px; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}