:root {
    --bg: #F4FBFF;
    --surface: #FFFFFF;
    --soft: #E8F7FF;
    --primary: #10AEEA;
    --primary-strong: #1688D8;
    --deep: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --border: rgba(16, 174, 234, 0.18);
    --footer: #073A68;
    --footer-text: #EAF8FF;
    --gradient: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%);
    --shadow: 0 18px 50px rgba(21, 90, 157, 0.12);
    --shadow-soft: 0 12px 32px rgba(21, 90, 157, 0.09);
    --radius-xl: 28px;
    --radius-lg: 20px;
    --radius-md: 14px;
    --header-height: 76px;
}

* { 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", "Noto Sans CJK SC", Arial, sans-serif;
    line-height: 1.75;
    padding-top: var(--header-height);
}
body.drawer-open { overflow: hidden; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
button { cursor: pointer; }
.container { width: min(100% - 32px, 1180px); margin-inline: auto; }
.section-space { padding: clamp(56px, 7vw, 96px) 0; }
.section-soft { background: var(--soft); }
.section-heading { max-width: 760px; margin-bottom: 34px; }
.section-heading--center { margin-inline: auto; text-align: center; }
.section-heading h2,
.page-hero h1,
.content-block h2,
.compliance-panel h2 {
    color: var(--deep);
    line-height: 1.25;
    margin: 10px 0 14px;
}
.section-heading h2 { font-size: clamp(28px, 4vw, 44px); }
.section-heading p,
.page-hero p,
.content-block p,
.feature-card p,
.info-card p,
.review-card p,
.footer-brand p { color: var(--muted); margin: 0; }
.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-strong);
    font-size: 14px;
    font-weight: 800;
    letter-spacing: .12em;
}
.eyebrow::before {
    content: "";
    width: 22px;
    height: 3px;
    border-radius: 999px;
    background: var(--gradient);
}
.skip-link {
    position: fixed;
    left: 12px;
    top: 8px;
    z-index: 2000;
    transform: translateY(-150%);
    background: var(--deep);
    color: #fff;
    padding: 10px 14px;
    border-radius: 10px;
}
.skip-link:focus { transform: none; }
.site-header {
    position: fixed;
    inset: 0 0 auto;
    z-index: 1000;
    height: var(--header-height);
    background: rgba(255,255,255,.96);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 8px 28px rgba(21, 90, 157, .08);
    backdrop-filter: blur(14px);
}
.header-inner {
    width: min(100% - 32px, 1360px);
    height: 100%;
    margin-inline: 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(112px, 10vw, 142px); height: 48px; object-fit: contain; }
.desktop-nav {
    flex: 1;
    min-width: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(8px, .9vw, 18px);
    overflow: hidden;
}
.desktop-nav a {
    white-space: nowrap;
    color: #36566f;
    font-size: clamp(12px, .84vw, 14px);
    font-weight: 700;
    padding: 8px 0;
    border-bottom: 2px solid transparent;
    transition: color .2s ease, border-color .2s ease;
}
.desktop-nav a:hover,
.desktop-nav a.is-active { color: var(--primary-strong); border-color: var(--primary); }
.header-actions { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.main-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 10px 24px;
    border: 0;
    border-radius: 999px;
    background: var(--gradient);
    color: #fff;
    font-weight: 800;
    box-shadow: 0 10px 24px rgba(22, 136, 216, .22);
    transition: transform .2s ease, box-shadow .2s ease;
}
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(22, 136, 216, .28); }
.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: #fff;
    padding: 11px;
}
.menu-toggle span { display: block; height: 2px; margin: 4px 0; background: var(--deep); border-radius: 99px; }
.drawer-overlay { position: fixed; inset: 0; z-index: 1090; background: rgba(7, 58, 104, .35); }
.mobile-drawer {
    position: fixed;
    z-index: 1100;
    inset: 0 0 0 auto;
    width: min(86vw, 380px);
    padding: 18px;
    background: #fff;
    box-shadow: -24px 0 60px rgba(7, 58, 104, .2);
    transform: translateX(105%);
    transition: transform .28s ease;
    overflow-y: auto;
}
.mobile-drawer.is-open { transform: none; }
.mobile-drawer__top { display: flex; align-items: center; justify-content: space-between; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.drawer-close { border: 0; background: var(--soft); color: var(--deep); width: 42px; height: 42px; border-radius: 50%; font-size: 26px; line-height: 1; }
.mobile-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; padding: 20px 0; }
.mobile-nav a { padding: 12px 14px; border-radius: 12px; background: var(--bg); color: var(--deep); font-weight: 700; }
.mobile-nav a.is-active { background: var(--gradient); color: #fff; }
.drawer-register { width: 100%; }
.page-hero {
    position: relative;
    overflow: hidden;
    background:
        radial-gradient(circle at 90% 20%, rgba(53,215,255,.25), transparent 34%),
        radial-gradient(circle at 10% 80%, rgba(22,136,216,.16), transparent 30%),
        linear-gradient(180deg, #fff 0%, var(--bg) 100%);
}
.page-hero__inner { max-width: 850px; padding: clamp(18px, 3vw, 36px) 0; }
.page-hero h1 { font-size: clamp(34px, 5.6vw, 64px); letter-spacing: -.03em; }
.page-hero p { max-width: 760px; font-size: clamp(16px, 2vw, 20px); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 18px; align-items: center; margin-top: 28px; }
.text-link { color: var(--primary-strong); font-weight: 800; }
.text-link:hover { color: var(--primary); }
.carousel-wrap { padding: 24px 0 0; }
.carousel {
    position: relative;
    width: min(100% - 32px, 1360px);
    margin-inline: auto;
    border-radius: var(--radius-xl);
    overflow: hidden;
    background: #dff5ff;
    box-shadow: var(--shadow);
    aspect-ratio: 16 / 5.6;
    min-height: 230px;
}
.carousel-track { position: relative; width: 100%; height: 100%; }
.carousel-slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity .55s ease; }
.carousel-slide.is-active { opacity: 1; visibility: visible; }
.carousel-slide img { width: 100%; height: 100%; object-fit: contain; background: #eaf8ff; }
.carousel-arrow {
    position: absolute;
    z-index: 4;
    top: 50%;
    transform: translateY(-50%);
    width: 46px;
    height: 46px;
    border: 1px solid rgba(255,255,255,.7);
    border-radius: 50%;
    background: rgba(7,58,104,.54);
    color: #fff;
    font-size: 28px;
    line-height: 1;
}
.carousel-arrow:hover { background: rgba(7,58,104,.8); }
.carousel-arrow--prev { left: 18px; }
.carousel-arrow--next { right: 18px; }
.carousel-dots { position: absolute; z-index: 4; left: 50%; bottom: 14px; transform: translateX(-50%); display: flex; gap: 8px; }
.carousel-dot { width: 10px; height: 10px; border: 0; border-radius: 50%; background: rgba(255,255,255,.62); padding: 0; }
.carousel-dot.is-active { width: 28px; border-radius: 99px; background: #fff; }
.grid-2, .grid-3, .grid-4, .quick-grid, .review-grid { display: grid; gap: 22px; }
.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)); }
.quick-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.review-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.info-card,
.feature-card,
.review-card,
.faq-card,
.content-block,
.notice-card,
.category-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
}
.info-card, .category-card, .notice-card { padding: 26px; }
.info-card h3, .category-card h3, .notice-card h3, .feature-card h3 { color: var(--deep); margin: 0 0 10px; font-size: 21px; }
.info-card p, .category-card p, .notice-card p { color: var(--muted); margin: 0 0 16px; }
.category-card { position: relative; overflow: hidden; }
.category-card::after { content: ""; position: absolute; width: 72px; height: 72px; right: -22px; bottom: -26px; border-radius: 50%; background: var(--soft); }
.feature-card { overflow: hidden; }
.feature-card__media { background: var(--soft); aspect-ratio: 16 / 10; display: grid; place-items: center; overflow: hidden; }
.feature-card__media img { width: 100%; height: 100%; object-fit: contain; }
.feature-card__body { padding: 24px; }
.feature-card__body p { margin-bottom: 16px; }
.content-split { display: grid; grid-template-columns: .95fr 1.05fr; gap: 34px; align-items: center; }
.content-split--reverse { grid-template-columns: 1.05fr .95fr; }
.content-split--reverse .content-media { order: 2; }
.content-media { border-radius: var(--radius-xl); overflow: hidden; background: var(--soft); box-shadow: var(--shadow); }
.content-media img { width: 100%; aspect-ratio: 16 / 10; object-fit: contain; }
.content-block { padding: clamp(28px, 4vw, 48px); }
.content-block h2 { font-size: clamp(28px, 4vw, 42px); }
.content-block ul, .check-list { margin: 22px 0 0; padding: 0; list-style: none; }
.content-block li, .check-list li { position: relative; padding-left: 28px; margin: 10px 0; color: var(--muted); }
.content-block li::before, .check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--primary-strong); font-weight: 900; }
.review-card { margin: 0; padding: 26px; }
.review-card p { font-size: 16px; }
.review-card footer { margin-top: 18px; color: var(--deep); font-weight: 800; }
.compliance-panel {
    display: grid;
    grid-template-columns: .75fr 1.25fr;
    gap: 34px;
    padding: clamp(30px, 5vw, 56px);
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, #dff7ff 0%, #ffffff 52%, #e8f7ff 100%);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}
.compliance-panel__content p { color: var(--muted); margin: 0 0 14px; }
.faq-list { display: grid; gap: 16px; }
.faq-card { overflow: hidden; }
.faq-card summary { cursor: pointer; list-style: none; padding: 22px 58px 22px 24px; position: relative; color: var(--deep); font-weight: 800; }
.faq-card summary::-webkit-details-marker { display: none; }
.faq-card summary::after { content: "+"; position: absolute; right: 24px; top: 50%; transform: translateY(-50%); color: var(--primary-strong); font-size: 24px; }
.faq-card[open] summary::after { content: "−"; }
.faq-card p { margin: 0; padding: 0 24px 24px; color: var(--muted); }
.step-list { counter-reset: step; display: grid; gap: 18px; }
.step-item { counter-increment: step; display: grid; grid-template-columns: 48px 1fr; gap: 18px; align-items: start; padding: 22px; border-radius: var(--radius-lg); background: #fff; border: 1px solid var(--border); box-shadow: var(--shadow-soft); }
.step-item::before { content: counter(step); display: grid; place-items: center; width: 48px; height: 48px; border-radius: 16px; background: var(--gradient); color: #fff; font-weight: 900; }
.step-item h3 { margin: 0 0 6px; color: var(--deep); }
.step-item p { margin: 0; color: var(--muted); }
.notice-strip { padding: 18px 0; background: var(--deep); color: #fff; }
.notice-strip .container { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.notice-strip p { margin: 0; }
.notice-strip a { color: #fff; font-weight: 800; white-space: nowrap; }
.site-footer { background: var(--footer); color: var(--footer-text); padding: 64px 0 22px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 36px; }
.footer-grid h2 { margin: 0 0 16px; font-size: 17px; color: #fff; }
.footer-grid a { display: block; color: rgba(234,248,255,.82); margin: 9px 0; }
.footer-grid a:hover { color: #fff; }
.brand-logo--footer { display: inline-flex !important; margin-bottom: 14px !important; padding: 8px 12px; border-radius: 12px; background: #fff; }
.footer-brand p { color: rgba(234,248,255,.78); max-width: 460px; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; gap: 20px; margin-top: 44px; padding-top: 22px; border-top: 1px solid rgba(234,248,255,.16); }
.footer-bottom p { margin: 0; color: rgba(234,248,255,.68); font-size: 14px; }
.footer-register { color: #fff; font-weight: 800; }
@media (max-width: 1179px) {
    .desktop-nav { display: none; }
    .menu-toggle { display: block; }
    .header-inner { justify-content: space-between; }
}
@media (max-width: 900px) {
    .grid-4, .quick-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .grid-3, .review-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .content-split, .content-split--reverse, .compliance-panel { grid-template-columns: 1fr; }
    .content-split--reverse .content-media { order: initial; }
    .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
    .footer-grid > div:last-child { grid-column: 2 / -1; }
    .carousel { aspect-ratio: 16 / 7; }
}
@media (max-width: 640px) {
    :root { --header-height: 68px; }
    .container, .header-inner, .carousel { width: min(100% - 24px, 1180px); }
    .header-register { min-height: 40px; padding: 8px 18px; }
    .brand-logo img { width: 108px; height: 42px; }
    .carousel { border-radius: 18px; aspect-ratio: 16 / 9; min-height: 190px; }
    .carousel-arrow { width: 40px; height: 40px; font-size: 24px; }
    .carousel-arrow--prev { left: 10px; }
    .carousel-arrow--next { right: 10px; }
    .carousel-dots { bottom: 10px; }
    .grid-2, .grid-3, .grid-4, .quick-grid, .review-grid { grid-template-columns: 1fr; }
    .mobile-nav { grid-template-columns: 1fr 1fr; }
    .page-hero h1 { font-size: 36px; }
    .section-space { padding: 54px 0; }
    .info-card, .category-card, .notice-card, .review-card { padding: 22px; }
    .compliance-panel { padding: 26px; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-grid > div:first-child, .footer-grid > div:last-child { grid-column: 1 / -1; }
    .footer-bottom, .notice-strip .container { align-items: flex-start; flex-direction: column; }
}
@media (max-width: 390px) {
    .header-inner { gap: 8px; }
    .header-register { padding-inline: 14px; }
    .mobile-nav { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}