/* 开云全站样式 */
:root {
    --bg: #F4FBFF;
    --surface: #FFFFFF;
    --soft: #E8F7FF;
    --cyan: #11AEEA;
    --blue: #1688D8;
    --deep-blue: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --line: rgba(17, 174, 234, 0.18);
    --footer: #073A68;
    --footer-text: #EAF8FF;
    --gradient: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%);
    --shadow: 0 18px 50px rgba(22, 136, 216, 0.12);
    --shadow-soft: 0 10px 30px rgba(21, 90, 157, 0.08);
    --radius-xl: 28px;
    --radius-lg: 22px;
    --radius-md: 16px;
    --header-height: 76px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    overflow-x: hidden;
    background:
        radial-gradient(circle at 90% 10%, rgba(53, 215, 255, 0.12), transparent 26rem),
        radial-gradient(circle at 5% 38%, rgba(22, 136, 216, 0.08), transparent 24rem),
        var(--bg);
    color: var(--text);
    font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.75;
    -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; }

.container { width: min(100% - 32px, 1180px); margin-inline: auto; }
.skip-link {
    position: fixed;
    top: 8px;
    left: 8px;
    z-index: 9999;
    transform: translateY(-160%);
    padding: 9px 14px;
    border-radius: 10px;
    background: var(--footer);
    color: #fff;
}
.skip-link:focus { transform: translateY(0); }

.site-header {
    position: fixed;
    inset: 0 0 auto;
    z-index: 1000;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.94);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(16px);
    box-shadow: 0 8px 30px rgba(21, 90, 157, 0.06);
}
.header-inner {
    width: min(100% - 32px, 1360px);
    height: 100%;
    margin-inline: auto;
    display: flex;
    align-items: center;
    gap: clamp(14px, 2vw, 30px);
}
.brand-logo { flex: 0 0 auto; display: inline-flex; align-items: center; }
.brand-logo img { width: clamp(106px, 9vw, 140px); max-height: 48px; object-fit: contain; }
.desktop-nav {
    min-width: 0;
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(6px, 0.85vw, 16px);
    overflow: hidden;
}
.desktop-nav a {
    position: relative;
    flex: 0 0 auto;
    padding: 9px clamp(3px, 0.35vw, 8px);
    color: var(--text);
    font-size: clamp(12px, 0.96vw, 15px);
    font-weight: 650;
    white-space: nowrap;
    border-radius: 10px;
    transition: color .2s ease, background .2s ease;
}
.desktop-nav a:hover,
.desktop-nav a.active { color: var(--blue); background: var(--soft); }
.desktop-nav a.active::after {
    content: "";
    position: absolute;
    left: 22%; right: 22%; bottom: 3px;
    height: 2px;
    border-radius: 99px;
    background: var(--gradient);
}
.header-actions { flex: 0 0 auto; display: flex; align-items: center; gap: 10px; }
.main-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 10px 22px;
    border: 0;
    border-radius: 999px;
    background: var(--gradient);
    color: #fff;
    font-weight: 750;
    white-space: nowrap;
    box-shadow: 0 10px 22px rgba(22, 136, 216, 0.22);
    transition: transform .2s ease, box-shadow .2s ease;
}
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 14px 28px rgba(22, 136, 216, 0.28); }
.text-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 9px 18px;
    border: 1px solid rgba(22, 136, 216, .26);
    border-radius: 999px;
    background: #fff;
    color: var(--deep-blue);
    font-weight: 700;
    transition: border-color .2s ease, transform .2s ease;
}
.text-btn:hover { border-color: var(--cyan); transform: translateY(-2px); }
.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    padding: 0;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: var(--soft);
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
}
.menu-toggle span { width: 20px; height: 2px; border-radius: 99px; background: var(--deep-blue); }

.mobile-drawer {
    position: fixed;
    z-index: 1200;
    top: 0; right: 0;
    width: min(88vw, 390px);
    height: 100dvh;
    padding: 20px;
    transform: translateX(105%);
    transition: transform .28s ease;
    background: #fff;
    box-shadow: -20px 0 60px rgba(7, 58, 104, .18);
    overflow-y: auto;
}
.drawer-open .mobile-drawer { transform: translateX(0); }
.drawer-backdrop {
    position: fixed;
    z-index: 1100;
    inset: 0;
    visibility: hidden;
    opacity: 0;
    background: rgba(7, 58, 104, .38);
    backdrop-filter: blur(3px);
    transition: opacity .25s ease, visibility .25s ease;
}
.drawer-open .drawer-backdrop { visibility: visible; opacity: 1; }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.drawer-logo img { width: 128px; max-height: 46px; object-fit: contain; }
.drawer-close { width: 42px; height: 42px; border: 0; border-radius: 14px; background: var(--soft); color: var(--deep-blue); font-size: 28px; line-height: 1; }
.drawer-nav { display: grid; gap: 6px; padding: 18px 0; }
.drawer-nav a { display: flex; align-items: center; justify-content: space-between; padding: 12px 14px; border-radius: 13px; color: var(--text); font-weight: 650; }
.drawer-nav a:hover, .drawer-nav a.active { background: var(--soft); color: var(--blue); }
.drawer-register { width: 100%; }

main { padding-top: var(--header-height); }
.section { padding: clamp(62px, 8vw, 104px) 0; }
.section-tight { padding: clamp(42px, 6vw, 72px) 0; }
.section-soft { background: linear-gradient(180deg, rgba(232, 247, 255, .75), rgba(244, 251, 255, .82)); border-block: 1px solid var(--line); }
.section-heading { max-width: 760px; margin-bottom: 34px; }
.section-heading.center { margin-inline: auto; text-align: center; }
.eyebrow {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    padding: 4px 12px;
    margin-bottom: 12px;
    border-radius: 999px;
    background: var(--soft);
    color: var(--blue);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .08em;
}
h1, h2, h3 { margin: 0; line-height: 1.28; color: var(--deep-blue); }
h1 { font-size: clamp(34px, 5.4vw, 66px); letter-spacing: -.03em; }
h2 { font-size: clamp(28px, 3.7vw, 44px); letter-spacing: -.02em; }
h3 { font-size: clamp(19px, 2vw, 24px); }
p { margin: 0; }
.section-heading p, .page-intro-card > p, .split-copy > p { margin-top: 14px; color: var(--muted); font-size: clamp(15px, 1.4vw, 18px); }
.button-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }

.carousel-section { padding: 24px 0 38px; }
.carousel {
    position: relative;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, #e9f9ff, #fafdff);
    box-shadow: var(--shadow);
}
.carousel-track { position: relative; }
.carousel-slide { position: absolute; inset: 0; opacity: 0; pointer-events: none; transition: opacity .55s ease; }
.carousel-slide:first-child { position: relative; }
.carousel-slide.active { opacity: 1; pointer-events: auto; z-index: 1; }
.carousel-slide img { width: 100%; height: auto; max-height: 620px; object-fit: contain; margin-inline: auto; }
.carousel-arrow {
    position: absolute;
    z-index: 4;
    top: 50%;
    width: 46px;
    height: 46px;
    border: 1px solid rgba(255,255,255,.62);
    border-radius: 50%;
    transform: translateY(-50%);
    background: rgba(7, 58, 104, .48);
    color: #fff;
    font-size: 28px;
    line-height: 1;
    backdrop-filter: blur(8px);
}
.carousel-arrow:hover { background: rgba(22, 136, 216, .82); }
.carousel-arrow.prev { left: 18px; }
.carousel-arrow.next { right: 18px; }
.carousel-dots { position: absolute; z-index: 4; left: 50%; bottom: 16px; transform: translateX(-50%); display: flex; gap: 8px; padding: 8px 10px; border-radius: 999px; background: rgba(7, 58, 104, .28); }
.carousel-dot { width: 9px; height: 9px; padding: 0; border: 0; border-radius: 50%; background: rgba(255,255,255,.62); }
.carousel-dot.active { width: 25px; border-radius: 999px; background: #fff; }

.home-hero { padding: 26px 0 clamp(60px, 8vw, 96px); }
.hero-card {
    position: relative;
    overflow: hidden;
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(260px, .85fr);
    gap: clamp(32px, 6vw, 82px);
    align-items: center;
    padding: clamp(34px, 6vw, 78px);
    border: 1px solid var(--line);
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, rgba(255,255,255,.96), rgba(232,247,255,.92));
    box-shadow: var(--shadow-soft);
}
.hero-card::after { content: ""; position: absolute; width: 330px; height: 330px; right: -130px; top: -150px; border-radius: 50%; background: rgba(53, 215, 255, .14); }
.hero-card p { margin-top: 18px; max-width: 720px; color: var(--muted); font-size: clamp(16px, 1.6vw, 19px); }
.hero-points { display: grid; gap: 14px; position: relative; z-index: 1; }
.hero-point { padding: 18px; border: 1px solid var(--line); border-radius: var(--radius-md); background: rgba(255,255,255,.78); }
.hero-point strong { display: block; color: var(--deep-blue); font-size: 18px; }
.hero-point span { color: var(--muted); font-size: 14px; }

.page-intro { padding: clamp(52px, 7vw, 86px) 0 28px; }
.page-intro-card {
    position: relative;
    overflow: hidden;
    padding: clamp(36px, 7vw, 82px);
    border: 1px solid var(--line);
    border-radius: var(--radius-xl);
    background: linear-gradient(125deg, #ffffff 0%, #ecf9ff 72%, #dcf5ff 100%);
    box-shadow: var(--shadow);
}
.page-intro-card::before { content: ""; position: absolute; width: 280px; height: 280px; right: -90px; bottom: -150px; border-radius: 50%; background: rgba(17,174,234,.12); }
.page-intro-card > * { position: relative; z-index: 1; }
.page-intro-card > p { max-width: 820px; }

.card-grid { display: grid; gap: 20px; }
.cards-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cards-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cards-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.info-card {
    min-width: 0;
    display: flex;
    flex-direction: column;
    padding: 26px;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: rgba(255,255,255,.96);
    box-shadow: var(--shadow-soft);
    transition: transform .25s ease, box-shadow .25s ease;
}
.info-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.info-card p { flex: 1; margin-top: 12px; color: var(--muted); }
.card-tag { align-self: flex-start; margin-bottom: 16px; padding: 4px 10px; border-radius: 999px; background: var(--soft); color: var(--blue); font-size: 12px; font-weight: 800; }
.card-link { display: inline-flex; align-items: center; gap: 8px; margin-top: 20px; color: var(--blue); font-weight: 800; }
.card-link span { transition: transform .2s ease; }
.card-link:hover span { transform: translateX(4px); }

.split { display: grid; grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr); align-items: center; gap: clamp(32px, 6vw, 74px); }
.split-reverse .media-card { order: 2; }
.split-reverse .split-copy { order: 1; }
.media-card { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius-xl); background: #fff; box-shadow: var(--shadow); }
.media-card img { width: 100%; max-height: 560px; object-fit: contain; background: var(--soft); }
.split-copy h2 { margin-top: 2px; }
.split-copy .text-btn { margin-top: 22px; }
.check-list { display: grid; gap: 10px; margin: 22px 0 0; padding: 0; list-style: none; }
.check-list li { position: relative; padding-left: 30px; color: var(--text); }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: 1px; width: 21px; height: 21px; border-radius: 50%; display: grid; place-items: center; background: var(--soft); color: var(--blue); font-size: 12px; font-weight: 900; }

.review-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.review-card { margin: 0; padding: 26px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: #fff; box-shadow: var(--shadow-soft); }
.review-card > p { color: var(--text); font-size: 16px; }
.review-card footer { display: flex; flex-direction: column; margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--line); }
.review-card strong { color: var(--deep-blue); }
.review-card span { color: var(--muted); font-size: 13px; }

.notice-card { display: grid; grid-template-columns: minmax(230px, .7fr) minmax(0, 1.3fr); gap: clamp(26px, 5vw, 66px); padding: clamp(30px, 5vw, 58px); border: 1px solid rgba(17,174,234,.24); border-radius: var(--radius-xl); background: linear-gradient(135deg, #ffffff, #eaf8ff); box-shadow: var(--shadow-soft); }
.notice-copy { display: grid; gap: 12px; color: var(--muted); }

.faq-list { display: grid; gap: 14px; }
.faq-item { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius-md); background: #fff; box-shadow: 0 8px 22px rgba(21,90,157,.05); }
.faq-item summary { position: relative; padding: 20px 56px 20px 22px; list-style: none; color: var(--deep-blue); font-weight: 800; cursor: pointer; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; position: absolute; right: 20px; top: 50%; transform: translateY(-50%); width: 28px; height: 28px; display: grid; place-items: center; border-radius: 50%; background: var(--soft); color: var(--blue); font-size: 20px; }
.faq-item[open] summary::after { content: "−"; }
.faq-item div { padding: 0 22px 20px; color: var(--muted); }

.steps { counter-reset: step; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.step-card { position: relative; padding: 28px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: #fff; }
.step-card::before { counter-increment: step; content: counter(step, decimal-leading-zero); display: inline-flex; margin-bottom: 18px; color: var(--cyan); font-size: 32px; font-weight: 900; line-height: 1; }
.step-card p { margin-top: 10px; color: var(--muted); }

.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius-lg); background: #fff; box-shadow: var(--shadow-soft); }
.info-table { width: 100%; min-width: 680px; border-collapse: collapse; }
.info-table th, .info-table td { padding: 18px 20px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.info-table th { color: var(--deep-blue); background: var(--soft); }
.info-table tr:last-child td { border-bottom: 0; }

.cta-band { padding: clamp(30px, 5vw, 54px); border-radius: var(--radius-xl); background: var(--gradient); color: #fff; box-shadow: 0 22px 52px rgba(22,136,216,.24); }
.cta-band h2, .cta-band h3 { color: #fff; }
.cta-band p { margin-top: 10px; color: rgba(255,255,255,.88); }
.cta-band .text-btn { margin-top: 22px; background: #fff; border-color: #fff; }

.site-footer { padding: 62px 0 24px; background: var(--footer); color: var(--footer-text); }
.footer-grid { display: grid; grid-template-columns: 1.4fr .8fr .8fr; gap: 52px; }
.footer-brand img { width: 142px; max-height: 52px; object-fit: contain; filter: brightness(0) invert(1); }
.footer-brand p { max-width: 560px; margin-top: 18px; color: rgba(234,248,255,.76); }
.footer-links { display: grid; align-content: start; gap: 10px; }
.footer-links h2 { margin-bottom: 8px; color: #fff; font-size: 18px; }
.footer-links a { color: rgba(234,248,255,.78); }
.footer-links a:hover { color: #fff; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: 44px; padding-top: 22px; border-top: 1px solid rgba(234,248,255,.16); color: rgba(234,248,255,.68); font-size: 13px; }
.footer-bottom a { color: #fff; font-weight: 700; }

.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
    .reveal { opacity: 1; transform: none; }
}

@media (max-width: 1180px) {
    .desktop-nav { display: none; }
    .header-inner { justify-content: space-between; }
    .menu-toggle { display: inline-flex; }
}
@media (max-width: 900px) {
    .hero-card, .split, .notice-card { grid-template-columns: 1fr; }
    .split-reverse .media-card, .split-reverse .split-copy { order: initial; }
    .cards-4, .cards-3, .review-grid, .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 640px) {
    :root { --header-height: 68px; }
    .container { width: min(100% - 24px, 1180px); }
    .header-inner { width: min(100% - 24px, 1360px); }
    .brand-logo img { width: 104px; }
    .header-actions .main-btn { min-height: 40px; padding: 8px 16px; }
    .menu-toggle { width: 40px; height: 40px; }
    .carousel-section { padding-top: 14px; }
    .carousel { border-radius: 18px; }
    .carousel-arrow { width: 38px; height: 38px; font-size: 23px; }
    .carousel-arrow.prev { left: 10px; }
    .carousel-arrow.next { right: 10px; }
    .carousel-dots { bottom: 9px; }
    .carousel-dot { width: 7px; height: 7px; }
    .carousel-dot.active { width: 20px; }
    .page-intro { padding-top: 34px; }
    .page-intro-card, .hero-card { padding: 30px 22px; border-radius: 22px; }
    .cards-4, .cards-3, .cards-2, .review-grid, .steps { grid-template-columns: 1fr; }
    .info-card, .review-card { padding: 22px; }
    .section { padding: 58px 0; }
    .section-heading { margin-bottom: 26px; }
    .notice-card { padding: 26px 22px; }
    .footer-grid { grid-template-columns: 1fr; gap: 34px; }
    .footer-brand { grid-column: auto; }
    .footer-bottom { align-items: flex-start; flex-direction: column; }
}