:root {
    --bg: #F4FBFF;
    --surface-soft: #E8F7FF;
    --surface: #FFFFFF;
    --primary: #11AEEA;
    --primary-strong: #1688D8;
    --title: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --border: rgba(17, 174, 234, 0.18);
    --gradient: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%);
    --footer: #073A68;
    --footer-text: #EAF8FF;
    --shadow: 0 18px 48px rgba(18, 116, 174, 0.12);
    --shadow-soft: 0 10px 30px rgba(18, 116, 174, 0.08);
    --radius-lg: 26px;
    --radius-md: 18px;
    --radius-sm: 12px;
    --container: min(100% - 32px, 1360px);
    --header-h: 78px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    min-width: 320px;
    overflow-x: hidden;
    background: var(--bg);
    color: var(--text);
    font-family: "Microsoft YaHei", "PingFang SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.72;
    -webkit-font-smoothing: antialiased;
}
body.drawer-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
.skip-link {
    position: fixed;
    top: -100px;
    left: 16px;
    z-index: 2000;
    padding: 10px 16px;
    border-radius: 10px;
    background: var(--footer);
    color: #fff;
}
.skip-link:focus { top: 12px; }
.site-header {
    position: fixed;
    inset: 0 0 auto;
    z-index: 1000;
    height: var(--header-h);
    background: rgba(255,255,255,.96);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 8px 26px rgba(12, 86, 137, 0.07);
    backdrop-filter: blur(14px);
}
.header-inner {
    width: min(100% - 32px, 1360px);
    height: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: clamp(14px, 2vw, 28px);
}
.brand-logo { flex: 0 0 auto; display: inline-flex; align-items: center; }
.brand-logo img { width: clamp(104px, 9vw, 142px); max-height: 48px; object-fit: contain; }
.desktop-nav {
    flex: 1;
    min-width: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(4px, .75vw, 14px);
}
.desktop-nav a {
    flex: 0 1 auto;
    white-space: nowrap;
    padding: 10px clamp(5px, .55vw, 10px);
    border-radius: 999px;
    color: #31536c;
    font-size: clamp(12px, .9vw, 15px);
    font-weight: 600;
    transition: .2s ease;
}
.desktop-nav a:hover,
.desktop-nav a.active { color: var(--primary-strong); background: var(--surface-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, opacity .2s ease;
}
.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); }
.secondary-btn { color: var(--primary-strong); border: 1px solid var(--border); background: #fff; }
.secondary-btn:hover { transform: translateY(-2px); border-color: rgba(22,136,216,.4); }
.menu-toggle {
    display: none;
    width: 46px;
    height: 46px;
    padding: 11px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: #fff;
}
.menu-toggle span { display: block; width: 100%; height: 2px; margin: 5px 0; border-radius: 10px; background: var(--title); }
.mobile-drawer {
    position: fixed;
    z-index: 1200;
    top: 0;
    right: 0;
    width: min(88vw, 380px);
    height: 100dvh;
    padding: 20px;
    overflow-y: auto;
    transform: translateX(105%);
    transition: transform .28s ease;
    background: #fff;
    box-shadow: -18px 0 60px rgba(4, 57, 102, .18);
}
.drawer-open .mobile-drawer { transform: translateX(0); }
.drawer-overlay {
    position: fixed;
    z-index: 1100;
    inset: 0;
    visibility: hidden;
    opacity: 0;
    background: rgba(5, 44, 76, .45);
    transition: .25s ease;
}
.drawer-open .drawer-overlay { visibility: visible; opacity: 1; }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding-bottom: 18px; border-bottom: 1px solid var(--border); }
.drawer-logo img { width: 118px; max-height: 46px; object-fit: contain; }
.drawer-close { width: 42px; height: 42px; border: 0; border-radius: 50%; background: var(--surface-soft); color: var(--title); font-size: 28px; line-height: 1; }
.mobile-nav { display: grid; gap: 5px; padding: 18px 0; }
.mobile-nav a { padding: 12px 14px; border-radius: 12px; color: var(--text); font-weight: 650; }
.mobile-nav a:hover, .mobile-nav a.active { color: var(--primary-strong); background: var(--surface-soft); }
.drawer-register { width: 100%; }
main { padding-top: var(--header-h); }
.container { width: var(--container); margin-inline: auto; }
.section { padding: clamp(58px, 7vw, 96px) 0; }
.section-tight { padding: clamp(38px, 5vw, 68px) 0; }
.soft-section { background: var(--surface-soft); }
.section-heading { max-width: 760px; margin: 0 auto 34px; text-align: center; }
.eyebrow { display: inline-flex; margin-bottom: 12px; color: var(--primary-strong); font-size: 14px; font-weight: 800; letter-spacing: .12em; }
h1, h2, h3 { margin: 0; color: var(--title); line-height: 1.28; }
h1 { font-size: clamp(34px, 5vw, 64px); letter-spacing: -.03em; }
h2 { font-size: clamp(27px, 3.2vw, 42px); }
h3 { font-size: clamp(19px, 1.8vw, 24px); }
p { margin: 0; }
.lead { margin-top: 18px; color: var(--muted); font-size: clamp(16px, 1.6vw, 19px); }
.page-hero {
    position: relative;
    overflow: hidden;
    padding: clamp(72px, 10vw, 128px) 0 clamp(56px, 8vw, 100px);
    background:
        radial-gradient(circle at 12% 20%, rgba(53,215,255,.25), transparent 28%),
        radial-gradient(circle at 86% 16%, rgba(22,136,216,.18), transparent 30%),
        linear-gradient(180deg, #fff 0%, #eaf8ff 100%);
}
.page-hero::after {
    content: "";
    position: absolute;
    width: 430px;
    height: 430px;
    right: -190px;
    bottom: -230px;
    border: 70px solid rgba(17,174,234,.08);
    border-radius: 50%;
}
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.1fr .9fr; align-items: center; gap: clamp(32px, 6vw, 86px); }
.hero-copy { max-width: 720px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.hero-media,
.content-media {
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: #fff;
    box-shadow: var(--shadow);
}
.hero-media img,
.content-media img { width: 100%; height: auto; max-height: 520px; object-fit: contain; }
.hero-stat-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 32px; }
.hero-stat { padding: 17px; border: 1px solid var(--border); border-radius: 16px; background: rgba(255,255,255,.78); }
.hero-stat strong { display: block; color: var(--primary-strong); font-size: 20px; }
.hero-stat span { display: block; margin-top: 4px; color: var(--muted); font-size: 13px; }
.carousel-wrap { padding: clamp(22px, 4vw, 48px) 0 0; }
.carousel {
    position: relative;
    width: var(--container);
    height: clamp(240px, 38vw, 520px);
    margin: 0 auto;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: clamp(18px, 2.5vw, 30px);
    background: linear-gradient(135deg, #e8f7ff, #fff);
    box-shadow: var(--shadow);
}
.carousel-slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity .55s ease, visibility .55s ease; }
.carousel-slide.is-active { opacity: 1; visibility: visible; }
.carousel-slide img { width: 100%; height: 100%; object-fit: contain; }
.carousel-arrow {
    position: absolute;
    z-index: 3;
    top: 50%;
    width: 46px;
    height: 46px;
    border: 1px solid rgba(255,255,255,.65);
    border-radius: 50%;
    transform: translateY(-50%);
    color: #fff;
    background: rgba(7,58,104,.45);
    backdrop-filter: blur(8px);
    font-size: 26px;
}
.carousel-arrow:hover { background: rgba(7,58,104,.7); }
.carousel-arrow.prev { left: clamp(10px, 2vw, 24px); }
.carousel-arrow.next { right: clamp(10px, 2vw, 24px); }
.carousel-dots { position: absolute; z-index: 3; left: 50%; bottom: 16px; display: flex; gap: 8px; transform: translateX(-50%); }
.carousel-dot { width: 10px; height: 10px; padding: 0; border: 0; border-radius: 50%; background: rgba(255,255,255,.65); box-shadow: 0 1px 5px rgba(0,0,0,.18); }
.carousel-dot.is-active { width: 28px; border-radius: 20px; background: #fff; }
.split { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: clamp(28px, 6vw, 78px); }
.split.reverse .content-media { order: 2; }
.copy-stack { display: grid; gap: 18px; }
.copy-stack ul, .clean-list { margin: 0; padding: 0; list-style: none; }
.copy-stack li, .clean-list li { position: relative; padding-left: 25px; margin: 10px 0; color: var(--muted); }
.copy-stack li::before, .clean-list li::before { content: ""; position: absolute; left: 0; top: .78em; width: 9px; height: 9px; border-radius: 50%; background: var(--gradient); box-shadow: 0 0 0 5px rgba(17,174,234,.1); }
.card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.card-grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.info-card,
.quick-card,
.review-card,
.faq-card,
.notice-card,
.contact-card {
    min-width: 0;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--surface);
    box-shadow: var(--shadow-soft);
}
.info-card { overflow: hidden; }
.info-card .card-body { padding: 24px; }
.info-card img { width: 100%; height: 230px; object-fit: contain; background: #f7fcff; }
.info-card p, .quick-card p, .review-card p, .contact-card p { margin-top: 12px; color: var(--muted); }
.info-card .text-link, .quick-card .text-link { display: inline-flex; margin-top: 18px; color: var(--primary-strong); font-weight: 750; }
.info-card .text-link:hover, .quick-card .text-link:hover { text-decoration: underline; }
.quick-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 16px; }
.quick-card { padding: 22px; transition: transform .2s ease, box-shadow .2s ease; }
.quick-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.quick-icon { display: grid; place-items: center; width: 42px; height: 42px; margin-bottom: 16px; border-radius: 13px; color: #fff; background: var(--gradient); font-weight: 900; }
.feature-list { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; }
.feature-item { padding: 20px; border: 1px solid var(--border); border-radius: 16px; background: rgba(255,255,255,.86); }
.feature-item strong { display: block; margin-bottom: 6px; color: var(--title); font-size: 18px; }
.feature-item span { color: var(--muted); }
.notice-strip { padding: 24px; border: 1px solid var(--border); border-radius: var(--radius-md); background: linear-gradient(135deg, rgba(53,215,255,.12), rgba(22,136,216,.08)); }
.notice-strip h2, .notice-strip h3 { margin-bottom: 10px; }
.notice-strip p { color: var(--muted); }
.timeline { display: grid; gap: 16px; counter-reset: step; }
.timeline-item { position: relative; padding: 22px 22px 22px 72px; border: 1px solid var(--border); border-radius: 16px; background: #fff; }
.timeline-item::before { counter-increment: step; content: counter(step); position: absolute; left: 20px; top: 20px; display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; color: #fff; background: var(--gradient); font-weight: 800; }
.timeline-item p { margin-top: 7px; color: var(--muted); }
.review-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 18px; }
.review-card { padding: 23px; }
.review-card .review-role { display: inline-flex; margin-bottom: 12px; padding: 5px 10px; border-radius: 999px; color: var(--primary-strong); background: var(--surface-soft); font-size: 13px; font-weight: 750; }
.review-card p { margin-top: 0; color: var(--text); }
.review-card small { display: block; margin-top: 14px; color: var(--muted); }
.faq-list { display: grid; gap: 14px; }
details.faq-card { padding: 0 22px; }
details.faq-card summary { position: relative; padding: 20px 44px 20px 0; color: var(--title); font-weight: 750; cursor: pointer; list-style: none; }
details.faq-card summary::-webkit-details-marker { display: none; }
details.faq-card summary::after { content: "+"; position: absolute; right: 0; top: 16px; display: grid; place-items: center; width: 32px; height: 32px; border-radius: 50%; color: var(--primary-strong); background: var(--surface-soft); font-size: 22px; }
details[open].faq-card summary::after { content: "−"; }
details.faq-card p { padding: 0 0 22px; color: var(--muted); }
.policy-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 16px; }
.notice-card { padding: 22px; }
.notice-card h3 { font-size: 19px; }
.notice-card p { margin-top: 10px; color: var(--muted); }
.cta-band { display: flex; align-items: center; justify-content: space-between; gap: 28px; padding: clamp(28px, 5vw, 52px); border-radius: var(--radius-lg); background: linear-gradient(135deg, #0d79bd, #13bce9); color: #fff; box-shadow: var(--shadow); }
.cta-band h2 { color: #fff; }
.cta-band p { margin-top: 10px; color: rgba(255,255,255,.86); }
.cta-band .secondary-btn { flex: 0 0 auto; border: 0; }
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius-md); background: #fff; box-shadow: var(--shadow-soft); }
table { width: 100%; min-width: 680px; border-collapse: collapse; }
th, td { padding: 16px 18px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
th { color: var(--title); background: var(--surface-soft); }
td { color: var(--muted); }
.contact-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 18px; }
.contact-card { padding: 24px; }
.site-footer { margin-top: 0; background: var(--footer); color: var(--footer-text); }
.footer-inner { width: var(--container); margin: 0 auto; padding: 56px 0 40px; display: grid; grid-template-columns: 1.1fr 1.9fr; gap: clamp(40px, 8vw, 110px); }
.footer-brand img { width: 142px; max-height: 50px; object-fit: contain; filter: brightness(0) invert(1); }
.footer-brand p { max-width: 430px; margin-top: 18px; color: rgba(234,248,255,.75); }
.footer-links { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 24px; }
.footer-links h2 { margin-bottom: 16px; color: #fff; font-size: 17px; }
.footer-links a { display: block; margin: 9px 0; color: rgba(234,248,255,.76); }
.footer-links a:hover { color: #fff; }
.footer-bottom { width: var(--container); margin: 0 auto; padding: 22px 0 30px; display: flex; justify-content: space-between; gap: 24px; border-top: 1px solid rgba(255,255,255,.14); color: rgba(234,248,255,.66); font-size: 13px; }
.registration-page { min-height: 100vh; display: grid; place-items: center; padding: 32px; background: var(--bg); }
.registration-card { width: min(100%, 720px); padding: clamp(28px, 6vw, 56px); border: 1px solid var(--border); border-radius: var(--radius-lg); background: #fff; box-shadow: var(--shadow); text-align: center; }
.registration-card h1 { font-size: clamp(32px, 5vw, 52px); }
.registration-card p { margin: 18px 0 26px; color: var(--muted); }

@media (max-width: 1179px) {
    .desktop-nav { display: none; }
    .header-inner { justify-content: space-between; }
    .menu-toggle { display: block; }
    .header-actions .main-btn { padding-inline: 18px; }
    .quick-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
    .card-grid.four { grid-template-columns: repeat(2, minmax(0,1fr)); }
}
@media (max-width: 900px) {
    :root { --header-h: 72px; }
    .hero-grid, .split { grid-template-columns: 1fr; }
    .split.reverse .content-media { order: 0; }
    .hero-media { max-width: 720px; }
    .card-grid, .review-grid, .contact-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .policy-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .footer-inner { grid-template-columns: 1fr; }
    .cta-band { align-items: flex-start; flex-direction: column; }
}
@media (max-width: 640px) {
    :root { --container: min(100% - 24px, 1360px); }
    .header-inner { width: min(100% - 24px, 1360px); }
    .brand-logo img { width: 104px; }
    .header-actions .main-btn { min-height: 42px; padding: 0 16px; }
    .menu-toggle { width: 42px; height: 42px; padding: 10px; }
    .carousel { width: min(100% - 24px, 1360px); height: clamp(210px, 58vw, 330px); }
    .carousel-arrow { width: 40px; height: 40px; font-size: 22px; }
    .hero-stat-row, .feature-list, .quick-grid, .card-grid, .card-grid.four, .review-grid, .policy-grid, .contact-grid { grid-template-columns: 1fr; }
    .quick-grid { gap: 12px; }
    .quick-card { padding: 20px; }
    .footer-links { grid-template-columns: 1fr 1fr; }
    .footer-bottom { flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
}