:root {
    --bg: #F4FBFF;
    --nav: #FFFFFF;
    --soft: #E8F7FF;
    --card: #FFFFFF;
    --title: #10AEEA;
    --blue: #1688D8;
    --deep: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --border: rgba(16, 174, 234, 0.18);
    --footer: #073A68;
    --shadow: 0 18px 42px rgba(21, 90, 157, 0.11);
    --radius-xl: 28px;
    --radius-lg: 22px;
    --radius-md: 16px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    min-width: 0;
    overflow-x: hidden;
    color: var(--text);
    background: radial-gradient(circle at 10% 0%, rgba(53,215,255,.18), transparent 28rem), var(--bg);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    line-height: 1.75;
}
body.drawer-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
.skip-link { position: fixed; left: 16px; top: -60px; z-index: 2000; padding: 10px 16px; border-radius: 12px; background: #fff; color: var(--deep); box-shadow: var(--shadow); }
.skip-link:focus { top: 12px; }
.site-header { position: sticky; top: 0; z-index: 1000; background: rgba(255,255,255,.94); border-bottom: 1px solid var(--border); backdrop-filter: blur(16px); }
.header-inner { width: min(100% - 32px, 1360px); min-height: 76px; margin: 0 auto; display: flex; align-items: center; gap: clamp(10px, 1.4vw, 22px); }
.brand-logo { flex: 0 0 auto; width: clamp(122px, 11vw, 168px); }
.brand-logo img { width: 100%; height: 48px; object-fit: contain; object-position: left center; }
.desktop-nav { flex: 1; min-width: 0; display: flex; justify-content: center; align-items: center; gap: clamp(5px, .7vw, 13px); }
.desktop-nav a { white-space: nowrap; font-size: clamp(12px, .88vw, 15px); color: #37546c; padding: 8px clamp(3px, .35vw, 7px); border-radius: 999px; transition: .2s ease; }
.desktop-nav a:hover, .desktop-nav a.active { color: var(--deep); background: var(--soft); }
.header-actions { flex: 0 0 auto; display: flex; align-items: center; gap: 10px; }
.main-btn, .secondary-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 22px; border-radius: 999px; font-weight: 700; white-space: nowrap; transition: transform .2s ease, box-shadow .2s ease; }
.main-btn { color: #fff; background: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%); box-shadow: 0 10px 26px rgba(22,136,216,.24); }
.secondary-btn { color: var(--deep); border: 1px solid var(--border); background: #fff; }
.main-btn:hover, .secondary-btn:hover { transform: translateY(-2px); }
.menu-toggle { display: none; width: 44px; height: 44px; padding: 10px; border: 0; border-radius: 14px; background: var(--soft); cursor: pointer; }
.menu-toggle span { display: block; height: 2px; margin: 5px 0; border-radius: 2px; background: var(--deep); }
.mobile-drawer { position: fixed; top: 0; right: 0; z-index: 1200; width: min(88vw, 380px); height: 100dvh; padding: 20px; background: #fff; transform: translateX(105%); transition: transform .24s ease; box-shadow: -20px 0 60px rgba(7,58,104,.18); overflow-y: auto; }
.mobile-drawer.open { transform: translateX(0); }
.drawer-backdrop { position: fixed; inset: 0; z-index: 1100; background: rgba(7,58,104,.34); opacity: 0; transition: opacity .22s ease; }
.drawer-backdrop.visible { opacity: 1; }
.drawer-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 18px; border-bottom: 1px solid var(--border); }
.drawer-logo { width: 150px; }
.drawer-logo img { height: 46px; object-fit: contain; object-position: left center; }
.drawer-close { width: 42px; height: 42px; border: 0; border-radius: 50%; background: var(--soft); color: var(--deep); font-size: 30px; line-height: 1; cursor: pointer; }
.mobile-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin: 18px 0; }
.mobile-nav a { padding: 11px 12px; border: 1px solid var(--border); border-radius: 14px; color: #37546c; background: #fbfeff; }
.mobile-nav a.active { color: var(--deep); background: var(--soft); }
.drawer-register { width: 100%; }
main { min-height: 60vh; }
.container { width: min(100% - 32px, 1200px); margin-inline: auto; }
.hero-shell { padding: 28px 0 8px; }
.carousel { position: relative; width: min(100% - 32px, 1360px); margin: 0 auto; border-radius: var(--radius-xl); overflow: hidden; background: var(--soft); box-shadow: var(--shadow); aspect-ratio: 16 / 6.2; }
.carousel-track { display: flex; height: 100%; transition: transform .55s cubic-bezier(.22,.61,.36,1); }
.carousel-slide { flex: 0 0 100%; min-width: 100%; height: 100%; }
.carousel-slide img { width: 100%; height: 100%; object-fit: contain; background: #eaf9ff; }
.carousel-arrow { position: absolute; top: 50%; z-index: 2; width: 46px; height: 46px; border: 0; border-radius: 50%; transform: translateY(-50%); color: #fff; background: rgba(7,58,104,.62); font-size: 26px; cursor: pointer; }
.carousel-arrow.prev { left: 18px; }
.carousel-arrow.next { right: 18px; }
.carousel-dots { position: absolute; left: 50%; bottom: 16px; z-index: 2; display: flex; gap: 8px; transform: translateX(-50%); }
.carousel-dot { width: 10px; height: 10px; padding: 0; border: 2px solid #fff; border-radius: 50%; background: rgba(255,255,255,.45); cursor: pointer; }
.carousel-dot.active { background: #fff; transform: scale(1.2); }
.page-hero { padding: clamp(56px, 8vw, 96px) 0 34px; }
.page-hero .hero-panel { position: relative; overflow: hidden; padding: clamp(34px, 6vw, 68px); border: 1px solid var(--border); border-radius: var(--radius-xl); background: linear-gradient(135deg, rgba(255,255,255,.98), rgba(232,247,255,.9)); box-shadow: var(--shadow); }
.page-hero .hero-panel::after { content: ""; position: absolute; width: 320px; height: 320px; right: -110px; top: -150px; border-radius: 50%; background: rgba(53,215,255,.17); }
.eyebrow { margin: 0 0 8px; color: var(--blue); font-size: 14px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
h1, h2, h3 { margin-top: 0; line-height: 1.3; color: var(--deep); }
h1 { max-width: 850px; margin-bottom: 16px; font-size: clamp(34px, 5vw, 62px); }
h2 { font-size: clamp(25px, 3vw, 38px); }
h3 { font-size: clamp(18px, 2vw, 23px); }
p { margin-top: 0; }
.hero-lead { max-width: 820px; margin-bottom: 0; color: var(--muted); font-size: clamp(16px, 1.5vw, 19px); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.section { padding: clamp(52px, 7vw, 88px) 0; }
.section.soft { background: linear-gradient(180deg, rgba(232,247,255,.72), rgba(244,251,255,.3)); }
.section-heading { max-width: 820px; margin-bottom: 30px; }
.section-heading p { color: var(--muted); }
.grid-2, .grid-3, .grid-4 { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card { height: 100%; padding: 25px; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--card); box-shadow: 0 12px 32px rgba(21,90,157,.07); }
.card p:last-child { margin-bottom: 0; }
.card-link { display: inline-flex; margin-top: 8px; color: var(--blue); font-weight: 750; }
.card-link::after { content: "→"; margin-left: 6px; }
.feature-row { display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(320px, .88fr); gap: clamp(24px, 4vw, 58px); align-items: center; }
.feature-row.reverse .feature-copy { order: 2; }
.feature-row.reverse .feature-media { order: 1; }
.feature-copy p { color: var(--muted); }
.feature-media { border: 1px solid var(--border); border-radius: var(--radius-xl); overflow: hidden; background: #fff; box-shadow: var(--shadow); }
.feature-media img { width: 100%; max-height: 480px; object-fit: contain; background: #f7fdff; }
.tag-list { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.tag { padding: 7px 12px; border-radius: 999px; color: var(--deep); background: var(--soft); font-size: 14px; }
.notice { padding: 24px; border-left: 4px solid var(--title); border-radius: 0 var(--radius-md) var(--radius-md) 0; background: #fff; box-shadow: 0 10px 26px rgba(21,90,157,.07); }
.notice p:last-child { margin-bottom: 0; }
.steps { counter-reset: step; display: grid; gap: 14px; }
.step { position: relative; padding: 20px 20px 20px 66px; border: 1px solid var(--border); border-radius: var(--radius-md); background: #fff; }
.step::before { counter-increment: step; content: counter(step); position: absolute; left: 18px; top: 18px; display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; color: #fff; background: linear-gradient(135deg, #35D7FF, #1688D8); font-weight: 800; }
.review-card { position: relative; padding-top: 50px; }
.review-card::before { content: "“"; position: absolute; top: 4px; left: 22px; color: #b9ecff; font-size: 68px; font-family: Georgia, serif; line-height: 1; }
.review-role { color: var(--blue); font-weight: 800; }
.faq-list { display: grid; gap: 14px; }
.faq-item { border: 1px solid var(--border); border-radius: var(--radius-md); background: #fff; overflow: hidden; }
.faq-item details { padding: 0 22px; }
.faq-item summary { cursor: pointer; padding: 19px 0; color: var(--deep); font-weight: 800; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; float: right; color: var(--blue); font-size: 22px; }
.faq-item details[open] summary::after { content: "−"; }
.faq-item p { padding-bottom: 20px; color: var(--muted); }
.cta-band { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: clamp(28px, 5vw, 48px); border-radius: var(--radius-xl); color: #fff; background: linear-gradient(135deg, #0e9fdf, #155a9d); box-shadow: var(--shadow); }
.cta-band h2, .cta-band p { color: #fff; }
.cta-band p { margin-bottom: 0; opacity: .9; }
.site-footer { margin-top: 60px; color: #EAF8FF; background: var(--footer); }
.footer-inner { width: min(100% - 32px, 1200px); margin: 0 auto; padding: 56px 0 34px; display: grid; grid-template-columns: 1.1fr 1.9fr; gap: 56px; }
.footer-brand img { width: 170px; height: 52px; margin-bottom: 18px; object-fit: contain; object-position: left center; filter: brightness(0) invert(1); }
.footer-brand p { max-width: 440px; color: rgba(234,248,255,.78); }
.footer-links { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 28px; }
.footer-links h2 { margin-bottom: 12px; color: #fff; font-size: 17px; }
.footer-links a { display: block; padding: 4px 0; color: rgba(234,248,255,.78); }
.footer-bottom { width: min(100% - 32px, 1200px); margin: 0 auto; padding: 22px 0 30px; border-top: 1px solid rgba(234,248,255,.14); color: rgba(234,248,255,.72); font-size: 14px; }
.footer-bottom p { margin: 5px 0; }
@media (max-width: 1179px) {
    .desktop-nav { display: none; }
    .menu-toggle { display: block; }
    .header-inner { min-height: 70px; }
    .brand-logo { margin-right: auto; }
}
@media (max-width: 900px) {
    .carousel { aspect-ratio: 16 / 8; }
    .grid-4 { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .grid-3 { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .feature-row { grid-template-columns: 1fr; }
    .feature-row.reverse .feature-copy, .feature-row.reverse .feature-media { order: initial; }
    .footer-inner { grid-template-columns: 1fr; gap: 34px; }
}
@media (max-width: 640px) {
    .container, .carousel { width: min(100% - 24px, 1200px); }
    .header-inner { width: min(100% - 24px, 1360px); }
    .brand-logo { width: 128px; }
    .brand-logo img { height: 42px; }
    .header-actions .main-btn { min-height: 40px; padding: 0 17px; }
    .carousel { aspect-ratio: 4 / 3; border-radius: 20px; }
    .carousel-arrow { width: 40px; height: 40px; }
    .carousel-arrow.prev { left: 10px; }
    .carousel-arrow.next { right: 10px; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .page-hero { padding-top: 42px; }
    .page-hero .hero-panel { padding: 28px 22px; border-radius: 22px; }
    .card { padding: 21px; }
    .cta-band { align-items: flex-start; flex-direction: column; }
    .footer-links { grid-template-columns: 1fr 1fr; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}