/* 开云全站样式 */
:root {
    --bg: #F4FBFF;
    --surface: #FFFFFF;
    --surface-soft: #E8F7FF;
    --primary: #10AEEA;
    --primary-strong: #1688D8;
    --deep: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --border: rgba(16, 174, 234, 0.18);
    --footer: #073A68;
    --shadow: 0 18px 44px rgba(20, 116, 174, 0.12);
    --radius-lg: 28px;
    --radius-md: 20px;
    --radius-sm: 14px;
    --header-height: 76px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    min-width: 0;
    overflow-x: hidden;
    color: var(--text);
    background: var(--bg);
    font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.75;
}
body.drawer-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
button { cursor: pointer; }
.container { width: min(100% - 32px, 1240px); margin-inline: auto; }
.section { padding: clamp(56px, 7vw, 96px) 0; }
.soft-section { background: linear-gradient(180deg, rgba(232,247,255,.7), rgba(244,251,255,.3)); }
.skip-link { position: fixed; left: 12px; top: -80px; z-index: 9999; background: #fff; padding: 10px 16px; border-radius: 10px; box-shadow: var(--shadow); }
.skip-link:focus { top: 12px; }

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    height: var(--header-height);
    background: rgba(255,255,255,.96);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(16px);
}
.header-inner {
    width: min(100% - 32px, 1360px);
    height: 100%;
    margin-inline: auto;
    display: flex;
    align-items: center;
    gap: clamp(14px, 1.6vw, 24px);
    min-width: 0;
}
.brand-logo { flex: 0 0 auto; width: clamp(102px, 8.5vw, 132px); }
.brand-logo img { width: 100%; height: 42px; object-fit: contain; }
.desktop-nav {
    flex: 1;
    min-width: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(6px, .72vw, 12px);
    white-space: nowrap;
}
.desktop-nav a {
    flex: 0 1 auto;
    padding: 7px 2px;
    font-size: clamp(12px, .86vw, 14px);
    color: #35556f;
    border-bottom: 2px solid transparent;
    transition: .2s ease;
}
.desktop-nav a:hover, .desktop-nav a.active { color: var(--primary-strong); border-bottom-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: 42px;
    padding: 10px 24px;
    border-radius: 999px;
    color: #fff;
    background: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%);
    box-shadow: 0 10px 24px rgba(22,136,216,.22);
    font-weight: 700;
    white-space: nowrap;
    border: 0;
}
.main-btn:hover { transform: translateY(-1px); box-shadow: 0 14px 28px rgba(22,136,216,.28); }
.menu-toggle { display: none; width: 44px; height: 44px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface-soft); padding: 10px; }
.menu-toggle span { display: block; height: 2px; margin: 5px 0; background: var(--deep); border-radius: 999px; }

.drawer-backdrop { position: fixed; inset: 0; z-index: 1090; background: rgba(7,58,104,.35); opacity: 0; visibility: hidden; transition: .25s ease; }
.mobile-drawer { position: fixed; top: 0; right: 0; z-index: 1100; width: min(88vw, 360px); height: 100dvh; background: #fff; transform: translateX(105%); transition: .25s ease; box-shadow: -20px 0 50px rgba(7,58,104,.18); overflow-y: auto; padding: 20px; }
.drawer-open .drawer-backdrop { opacity: 1; visibility: visible; }
.drawer-open .mobile-drawer { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 18px; border-bottom: 1px solid var(--border); }
.drawer-logo { width: 120px; }
.drawer-logo img { height: 42px; object-fit: contain; }
.drawer-close { border: 0; background: var(--surface-soft); color: var(--deep); width: 40px; height: 40px; border-radius: 12px; font-size: 26px; line-height: 1; }
.mobile-drawer nav { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding: 18px 0; }
.mobile-drawer nav a { padding: 11px 12px; border-radius: 12px; color: #35556f; background: #f8fcff; font-size: 14px; }
.mobile-drawer nav a.active { color: #fff; background: linear-gradient(135deg, #35D7FF, #1688D8); }
.drawer-register { width: 100%; }

h1, h2, h3 { margin: 0 0 16px; line-height: 1.28; color: var(--deep); }
h1 { font-size: clamp(34px, 5vw, 64px); letter-spacing: -.02em; }
h2 { font-size: clamp(28px, 3.6vw, 44px); }
h3 { font-size: clamp(20px, 2vw, 25px); }
p { margin: 0 0 16px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 12px; color: var(--primary-strong); font-weight: 800; letter-spacing: .08em; font-size: 13px; }
.eyebrow::before { content: ""; width: 24px; height: 3px; border-radius: 999px; background: linear-gradient(90deg, #35D7FF, #1688D8); }
.lead { max-width: 720px; font-size: clamp(17px, 2vw, 21px); color: var(--muted); }
.text-link { display: inline-flex; align-items: center; gap: 6px; color: var(--primary-strong); font-weight: 700; }
.text-link::after { content: "→"; transition: .2s ease; }
.text-link:hover::after { transform: translateX(4px); }
.hero-actions { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; margin-top: 26px; }

.page-hero { padding-top: clamp(46px, 6vw, 80px); }
.page-hero-grid { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(320px, .92fr); gap: clamp(28px, 5vw, 72px); align-items: center; }
.page-hero-copy { min-width: 0; }
.hero-figure { min-height: 340px; }
.hero-panel { min-height: 360px; border-radius: var(--radius-lg); background: radial-gradient(circle at 20% 20%, rgba(53,215,255,.9), transparent 42%), linear-gradient(135deg, #e9faff, #b7e7ff 48%, #1688d8); display: grid; place-items: center; box-shadow: var(--shadow); color: #fff; text-align: center; }
.hero-panel span { display: block; font-size: clamp(72px, 12vw, 150px); font-weight: 900; line-height: 1; letter-spacing: -.08em; text-shadow: 0 14px 34px rgba(7,58,104,.2); }
.hero-panel small { display: block; margin-top: -32px; font-size: 16px; letter-spacing: .18em; }

.home-carousel-wrap { padding: 24px 0 0; }
.home-carousel { position: relative; width: min(100% - 32px, 1360px); margin-inline: auto; border-radius: var(--radius-lg); overflow: hidden; background: var(--surface-soft); box-shadow: var(--shadow); aspect-ratio: 16 / 6.2; min-height: 280px; }
.carousel-track { height: 100%; display: flex; transition: transform .55s ease; }
.carousel-slide { min-width: 100%; height: 100%; margin: 0; display: grid; place-items: center; background: #eaf8ff; }
.carousel-slide img { width: 100%; height: 100%; object-fit: contain; }
.carousel-btn { position: absolute; top: 50%; transform: translateY(-50%); z-index: 2; width: 46px; height: 46px; border-radius: 50%; border: 1px solid rgba(255,255,255,.75); color: #fff; background: rgba(7,58,104,.45); backdrop-filter: blur(8px); font-size: 26px; line-height: 1; }
.carousel-btn:hover { background: rgba(7,58,104,.68); }
.carousel-btn.prev { left: 18px; }
.carousel-btn.next { right: 18px; }
.carousel-dots { position: absolute; left: 50%; bottom: 16px; transform: translateX(-50%); z-index: 2; display: flex; gap: 8px; }
.carousel-dot { width: 10px; height: 10px; border-radius: 50%; border: 0; background: rgba(255,255,255,.62); padding: 0; }
.carousel-dot.active { width: 28px; border-radius: 999px; background: #fff; }

.section-heading { display: grid; grid-template-columns: minmax(0, .95fr) minmax(280px, .7fr); gap: 30px; align-items: end; margin-bottom: 34px; }
.section-heading > p { color: var(--muted); max-width: 650px; justify-self: end; }
.card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.info-card { min-width: 0; padding: clamp(22px, 3vw, 30px); border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--surface); box-shadow: 0 12px 32px rgba(20,116,174,.08); transition: .2s ease; }
.info-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.info-card p { color: var(--muted); }
.tag { display: inline-flex; margin-bottom: 16px; padding: 5px 11px; border-radius: 999px; color: var(--primary-strong); background: var(--surface-soft); font-weight: 700; font-size: 12px; }

.media-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.media-card { overflow: hidden; border-radius: var(--radius-md); border: 1px solid var(--border); background: var(--surface); box-shadow: 0 12px 32px rgba(20,116,174,.08); }
.media-card figure { margin: 0; aspect-ratio: 16 / 10; background: var(--surface-soft); display: grid; place-items: center; overflow: hidden; }
.media-card figure img { width: 100%; height: 100%; object-fit: contain; }
.media-card-body { padding: 24px; }
.media-card-body p { color: var(--muted); }

.split-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(320px, .9fr); gap: clamp(30px, 5vw, 72px); align-items: center; }
.split-reverse .split-copy { order: 2; }
.split-copy p { color: var(--muted); }
.content-figure { margin: 0; border-radius: var(--radius-lg); overflow: hidden; background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow); display: grid; place-items: center; }
.content-figure img { width: 100%; height: 100%; min-height: 300px; object-fit: contain; }
.soft-panel { min-height: 280px; padding: 40px; border-radius: var(--radius-lg); background: linear-gradient(135deg, #fff, #dff5ff); border: 1px solid var(--border); box-shadow: var(--shadow); display: flex; flex-direction: column; justify-content: center; }
.soft-panel strong { font-size: clamp(34px, 5vw, 58px); color: var(--primary-strong); }
.soft-panel span { color: var(--muted); font-size: 18px; }

.step-list { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.step-list li { display: flex; gap: 18px; padding: 24px; border-radius: var(--radius-md); background: #fff; border: 1px solid var(--border); }
.step-list li > span { flex: 0 0 auto; width: 48px; height: 48px; border-radius: 16px; display: grid; place-items: center; color: #fff; background: linear-gradient(135deg, #35D7FF, #1688D8); font-weight: 900; }
.step-list p { color: var(--muted); margin-bottom: 0; }

.review-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.review-card { margin: 0; padding: 28px; border-radius: var(--radius-md); background: #fff; border: 1px solid var(--border); box-shadow: 0 12px 32px rgba(20,116,174,.08); }
.review-card p { font-size: 16px; color: #35556f; }
.review-card footer { color: var(--primary-strong); font-weight: 800; }

.faq-list { display: grid; gap: 12px; }
.faq-list details { border: 1px solid var(--border); border-radius: 16px; background: #fff; overflow: hidden; }
.faq-list summary { padding: 18px 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: "+"; float: right; color: var(--primary-strong); font-size: 22px; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { margin: 0; padding: 0 22px 20px; color: var(--muted); }

.quick-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 16px; }
.quick-card { padding: 22px; border-radius: 18px; background: #fff; border: 1px solid var(--border); }
.quick-card h3 { font-size: 20px; }
.quick-card p { color: var(--muted); font-size: 14px; }

.notice-list { display: grid; gap: 14px; }
.notice-item { padding: 22px 24px; border-left: 4px solid var(--primary); border-radius: 0 16px 16px 0; background: #fff; box-shadow: 0 8px 24px rgba(20,116,174,.07); }
.notice-item h3 { margin-bottom: 8px; }
.notice-item p { margin-bottom: 0; color: var(--muted); }

.compliance-section { padding-top: 24px; }
.compliance-box { display: grid; grid-template-columns: minmax(280px, .75fr) minmax(0, 1.25fr); gap: 30px; align-items: center; padding: clamp(28px, 4vw, 44px); border-radius: var(--radius-lg); color: #fff; background: linear-gradient(135deg, #0e6ba8, #073A68); box-shadow: var(--shadow); }
.compliance-box h2, .compliance-box .eyebrow { color: #fff; }
.compliance-box p { margin: 0; color: #eaf8ff; }

.site-footer { margin-top: 72px; padding: 68px 0 24px; color: #EAF8FF; background: var(--footer); }
.footer-grid { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 34px; }
.site-footer h2 { color: #fff; font-size: 18px; margin-bottom: 14px; }
.site-footer a { display: block; margin: 8px 0; color: #d8f3ff; }
.site-footer p { color: #c6e7f6; font-size: 14px; }
.footer-brand a { width: 132px; display: block; padding: 8px 12px; border-radius: 14px; background: #fff; margin-bottom: 18px; }
.footer-brand img { height: 42px; object-fit: contain; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; margin-top: 44px; padding-top: 20px; border-top: 1px solid rgba(234,248,255,.15); color: #b9deef; font-size: 13px; }

@media (max-width: 1180px) {
    .desktop-nav { display: none; }
    .header-inner { justify-content: space-between; }
    .menu-toggle { display: block; }
}
@media (max-width: 980px) {
    .page-hero-grid, .split-layout, .section-heading, .compliance-box { grid-template-columns: 1fr; }
    .section-heading > p { justify-self: start; }
    .split-reverse .split-copy { order: initial; }
    .card-grid, .media-grid, .review-grid, .step-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .quick-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
    .footer-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .home-carousel { aspect-ratio: 16 / 7.5; }
}
@media (max-width: 700px) {
    :root { --header-height: 68px; }
    .container, .header-inner, .home-carousel { width: min(100% - 24px, 1240px); }
    .header-inner { gap: 10px; }
    .brand-logo { width: 104px; }
    .header-actions .main-btn { padding-inline: 18px; min-height: 40px; }
    .section { padding: 52px 0; }
    .home-carousel-wrap { padding-top: 14px; }
    .home-carousel { min-height: 210px; aspect-ratio: 4 / 2.5; border-radius: 18px; }
    .carousel-btn { width: 40px; height: 40px; font-size: 22px; }
    .carousel-btn.prev { left: 10px; }
    .carousel-btn.next { right: 10px; }
    .carousel-dots { bottom: 10px; }
    .page-hero { padding-top: 38px; }
    .hero-panel, .hero-figure { min-height: 260px; }
    .card-grid, .media-grid, .review-grid, .step-list, .quick-grid { grid-template-columns: 1fr; }
    .info-card, .review-card { padding: 22px; }
    .step-list li { padding: 20px; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; }
    .mobile-drawer nav { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 430px) {
    .header-actions { gap: 6px; }
    .header-actions .main-btn { padding-inline: 14px; font-size: 14px; }
    .menu-toggle { width: 40px; height: 40px; }
    .mobile-drawer nav { grid-template-columns: 1fr; }
    .carousel-btn { width: 36px; height: 36px; }
}