/* 开云全站样式 */
:root {
    --bg: #F4FBFF;
    --surface: #FFFFFF;
    --surface-soft: #E8F7FF;
    --primary: #10AEEA;
    --primary-deep: #1688D8;
    --heading: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --border: rgba(16, 174, 234, 0.18);
    --shadow: 0 18px 50px rgba(20, 108, 165, 0.11);
    --shadow-soft: 0 12px 30px rgba(20, 108, 165, 0.08);
    --radius-xl: 28px;
    --radius-lg: 20px;
    --radius-md: 14px;
    --header-height: 76px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    overflow-x: hidden;
    background: var(--bg);
    color: var(--text);
    font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}
body.drawer-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
main { min-height: 60vh; padding-top: calc(var(--header-height) + 24px); }

.skip-link {
    position: fixed;
    top: 8px;
    left: 8px;
    z-index: 2000;
    padding: 10px 16px;
    border-radius: 10px;
    background: #073A68;
    color: #fff;
    transform: translateY(-150%);
}
.skip-link:focus { transform: translateY(0); }

.section-shell {
    width: min(100% - 32px, 1240px);
    margin-inline: auto;
}
.content-section { padding: clamp(64px, 8vw, 104px) 0; }
.content-section--tint { background: linear-gradient(180deg, rgba(232,247,255,.78), rgba(244,251,255,.55)); }

.site-header {
    position: fixed;
    inset: 0 0 auto;
    z-index: 1000;
    height: var(--header-height);
    border-bottom: 1px solid var(--border);
    background: rgba(255,255,255,.96);
    box-shadow: 0 8px 28px rgba(21,90,157,.07);
    backdrop-filter: blur(16px);
}
.header-inner {
    width: min(100% - 32px, 1360px);
    height: 100%;
    margin-inline: auto;
    display: flex;
    align-items: center;
    gap: clamp(14px, 2vw, 30px);
    min-width: 0;
}
.brand-logo { flex: 0 0 auto; display: inline-flex; align-items: center; }
.brand-logo img { width: clamp(108px, 9vw, 142px); max-height: 48px; object-fit: contain; }
.desktop-nav {
    flex: 1 1 auto;
    min-width: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(7px, .8vw, 14px);
    overflow: hidden;
}
.desktop-nav a {
    position: relative;
    flex: 0 0 auto;
    padding: 8px 2px;
    white-space: nowrap;
    color: #35556e;
    font-size: clamp(12px, .84vw, 14px);
    font-weight: 700;
    transition: color .2s ease;
}
.desktop-nav a::after {
    content: "";
    position: absolute;
    left: 50%;
    right: 50%;
    bottom: 2px;
    height: 2px;
    border-radius: 999px;
    background: var(--primary);
    transition: left .2s ease, right .2s ease;
}
.desktop-nav a:hover, .desktop-nav a.is-active { color: var(--primary-deep); }
.desktop-nav a:hover::after, .desktop-nav a.is-active::after { left: 0; right: 0; }
.header-actions { flex: 0 0 auto; display: flex; align-items: center; gap: 10px; }
.main-btn, .text-btn, .ghost-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 10px 22px;
    border-radius: 999px;
    font-weight: 800;
    line-height: 1.2;
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.main-btn {
    border: 0;
    background: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%);
    color: #fff;
    box-shadow: 0 10px 24px rgba(22,136,216,.24);
}
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(22,136,216,.3); }
.header-register { min-width: 78px; padding-inline: 20px; }
.text-btn { border: 1px solid var(--border); background: #fff; color: var(--primary-deep); }
.text-btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-soft); }
.ghost-btn { border: 1px solid rgba(255,255,255,.55); color: #fff; background: rgba(255,255,255,.09); }
.ghost-btn:hover { background: rgba(255,255,255,.16); }
.menu-toggle { display: none; width: 44px; height: 44px; border: 1px solid var(--border); border-radius: 13px; background: var(--surface-soft); padding: 10px; }
.menu-toggle span { display: block; height: 2px; margin: 4px 0; border-radius: 9px; background: var(--primary-deep); }

.drawer-overlay {
    position: fixed;
    inset: 0;
    z-index: 1090;
    background: rgba(4,35,62,.42);
    opacity: 0;
    pointer-events: none;
    transition: opacity .25s ease;
}
.mobile-drawer {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 1100;
    width: min(88vw, 380px);
    height: 100dvh;
    padding: 18px;
    background: #fff;
    box-shadow: -20px 0 50px rgba(7,58,104,.18);
    transform: translateX(104%);
    transition: transform .28s ease;
    overflow-y: auto;
}
.drawer-open .drawer-overlay { opacity: 1; pointer-events: auto; }
.drawer-open .mobile-drawer { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.drawer-logo img { width: 128px; max-height: 46px; object-fit: contain; }
.drawer-close { width: 40px; height: 40px; border: 0; border-radius: 12px; background: var(--surface-soft); color: var(--heading); font-size: 28px; line-height: 1; }
.drawer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding: 18px 0; }
.drawer-nav a { padding: 11px 12px; border: 1px solid transparent; border-radius: 12px; color: #35556e; font-weight: 700; white-space: nowrap; }
.drawer-nav a:hover, .drawer-nav a.is-active { background: var(--surface-soft); border-color: var(--border); color: var(--primary-deep); }
.drawer-register { width: 100%; }

.home-carousel {
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    background: #eaf8ff;
    box-shadow: var(--shadow);
}
.carousel-track { position: relative; aspect-ratio: 16 / 6.2; min-height: 270px; }
.carousel-slide { position: absolute; inset: 0; opacity: 0; pointer-events: none; transition: opacity .55s ease; }
.carousel-slide.is-active { opacity: 1; pointer-events: auto; }
.carousel-slide img { width: 100%; height: 100%; object-fit: contain; background: #eaf8ff; }
.carousel-arrow {
    position: absolute;
    top: 50%;
    z-index: 3;
    width: 46px;
    height: 46px;
    border: 1px solid rgba(255,255,255,.65);
    border-radius: 50%;
    background: rgba(7,58,104,.42);
    color: #fff;
    font-size: 34px;
    line-height: 1;
    transform: translateY(-50%);
    backdrop-filter: blur(8px);
}
.carousel-arrow--prev { left: 18px; }
.carousel-arrow--next { right: 18px; }
.carousel-dots { position: absolute; z-index: 3; left: 50%; bottom: 18px; display: flex; gap: 8px; transform: translateX(-50%); }
.carousel-dot { width: 9px; height: 9px; padding: 0; border: 1px solid rgba(255,255,255,.9); border-radius: 999px; background: rgba(7,58,104,.36); transition: width .2s ease, background .2s ease; }
.carousel-dot.is-active { width: 28px; background: #fff; }

.brand-welcome { margin-top: clamp(68px, 8vw, 108px); margin-bottom: clamp(64px, 8vw, 104px); }
.split-section { display: grid; grid-template-columns: minmax(0, 1.04fr) minmax(320px, .96fr); align-items: center; gap: clamp(34px, 6vw, 76px); }
.split-section--reverse { grid-template-columns: minmax(320px, .96fr) minmax(0, 1.04fr); }
.split-copy { min-width: 0; }
.split-copy h1, .split-copy h2, .page-intro h1, .section-heading h2, .cta-panel h2, .compliance-panel h2 {
    margin: 10px 0 18px;
    color: var(--heading);
    font-size: clamp(32px, 4.6vw, 58px);
    line-height: 1.16;
    letter-spacing: -.04em;
}
.split-copy h2, .section-heading h2, .cta-panel h2, .compliance-panel h2 { font-size: clamp(28px, 3.5vw, 44px); }
.split-copy p, .page-intro p, .section-heading p { color: var(--muted); font-size: clamp(16px, 1.35vw, 18px); }
.split-copy p + p { margin-top: 10px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--primary-deep); font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 24px; height: 3px; border-radius: 99px; background: linear-gradient(90deg, var(--primary), var(--primary-deep)); }
.eyebrow--light { color: #fff; }
.eyebrow--light::before { background: #fff; }
.intro-actions, .cta-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.split-media { margin: 0; padding: 18px; border: 1px solid var(--border); border-radius: var(--radius-xl); background: linear-gradient(145deg, #fff, #eaf8ff); box-shadow: var(--shadow); }
.split-media img { width: 100%; max-height: 520px; border-radius: calc(var(--radius-xl) - 10px); object-fit: contain; }

.page-intro {
    min-height: 430px;
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(300px, .92fr);
    align-items: center;
    gap: clamp(30px, 6vw, 72px);
    padding: clamp(48px, 7vw, 86px);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    background:
        radial-gradient(circle at 92% 10%, rgba(53,215,255,.24), transparent 34%),
        linear-gradient(145deg, #fff 0%, #edf9ff 100%);
    box-shadow: var(--shadow);
}
.page-intro:not(:has(.page-intro__media)) { grid-template-columns: minmax(0, 760px); justify-content: center; text-align: center; }
.page-intro:not(:has(.page-intro__media)) .intro-actions { justify-content: center; }
.page-intro__media { margin: 0; }
.page-intro__media img { width: 100%; max-height: 360px; object-fit: contain; border-radius: var(--radius-lg); }

.section-heading { max-width: 760px; margin: 0 auto 36px; text-align: center; }
.section-heading h2 { margin-bottom: 12px; }
.section-heading p { margin: 0; }
.card-grid { display: grid; gap: 20px; }
.card-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card-grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.info-card { min-width: 0; overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--surface); box-shadow: var(--shadow-soft); transition: transform .22s ease, box-shadow .22s ease; }
.info-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.info-card__media { padding: 12px 12px 0; }
.info-card__media img { width: 100%; aspect-ratio: 16 / 10; border-radius: 14px; object-fit: contain; background: var(--surface-soft); }
.info-card__body { padding: 22px; }
.info-card h3 { margin: 0 0 10px; color: var(--heading); font-size: 21px; line-height: 1.35; }
.info-card p { margin: 0; color: var(--muted); }
.mini-label { display: inline-block; margin-bottom: 10px; padding: 4px 9px; border-radius: 999px; background: var(--surface-soft); color: var(--primary-deep); font-size: 12px; font-weight: 800; }
.card-link { display: inline-flex; align-items: center; gap: 7px; margin-top: 16px; color: var(--primary-deep); font-weight: 800; }
.card-link span { transition: transform .2s ease; }
.card-link:hover span { transform: translateX(4px); }

.feature-row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.feature-panel { overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius-xl); background: #fff; box-shadow: var(--shadow-soft); }
.feature-panel img { width: 100%; aspect-ratio: 16 / 9; object-fit: contain; background: var(--surface-soft); }
.feature-panel > div { padding: 26px; }
.feature-panel h2 { margin: 10px 0; color: var(--heading); font-size: 25px; line-height: 1.3; }
.feature-panel p { color: var(--muted); }
.dual-panels { display: grid; grid-template-columns: 1.12fr .88fr; gap: 24px; }
.large-card { overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius-xl); background: #fff; box-shadow: var(--shadow-soft); }
.large-card img { width: 100%; aspect-ratio: 16 / 7; object-fit: contain; background: var(--surface-soft); }
.large-card > div, .large-card--text { padding: clamp(26px, 4vw, 44px); }
.large-card h2 { margin: 10px 0; color: var(--heading); font-size: clamp(28px, 3vw, 40px); line-height: 1.2; }
.large-card p { color: var(--muted); }
.check-list { display: grid; gap: 10px; padding: 0; margin: 24px 0; list-style: none; }
.check-list li { position: relative; padding-left: 28px; color: #38566d; font-weight: 700; }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--primary); font-weight: 900; }

.prose-grid, .notice-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.prose-grid article, .notice-grid article, .faq-grid article { padding: clamp(22px, 3vw, 32px); border: 1px solid var(--border); border-radius: var(--radius-lg); background: #fff; box-shadow: var(--shadow-soft); }
.prose-grid h3, .notice-grid h3, .faq-grid h3 { margin: 0 0 10px; color: var(--heading); font-size: 21px; }
.prose-grid p, .notice-grid p, .faq-grid p { margin: 0; color: var(--muted); }
.steps-list { display: grid; max-width: 900px; margin: 0 auto; padding: 0; list-style: none; gap: 16px; }
.steps-list li { display: grid; grid-template-columns: 54px minmax(0, 1fr); gap: 18px; padding: 22px; border: 1px solid var(--border); border-radius: var(--radius-lg); background: #fff; box-shadow: var(--shadow-soft); }
.step-number { width: 54px; height: 54px; display: grid; place-items: center; border-radius: 16px; background: linear-gradient(135deg, #35D7FF, #1688D8); color: #fff; font-size: 20px; font-weight: 900; }
.steps-list h3 { margin: 2px 0 6px; color: var(--heading); }
.steps-list p { margin: 0; color: var(--muted); }

.review-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.review-card { position: relative; margin: 0; padding: 28px; border: 1px solid var(--border); border-radius: var(--radius-lg); background: #fff; box-shadow: var(--shadow-soft); }
.review-card::before { content: "“"; position: absolute; top: 4px; right: 20px; color: rgba(16,174,234,.16); font-size: 72px; font-weight: 900; line-height: 1; }
.review-card p { position: relative; margin: 0 0 18px; color: #39576d; }
.review-card footer { color: var(--primary-deep); font-weight: 900; }

.faq-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.section-link { margin-top: 28px; text-align: center; }
.faq-list { display: grid; gap: 18px; }
.faq-item { display: grid; grid-template-columns: 64px minmax(0, 1fr); gap: 20px; padding: clamp(24px, 4vw, 38px); border: 1px solid var(--border); border-radius: var(--radius-lg); background: #fff; box-shadow: var(--shadow-soft); }
.faq-index { width: 58px; height: 58px; display: grid; place-items: center; border-radius: 18px; background: var(--surface-soft); color: var(--primary-deep); font-weight: 900; }
.faq-item h2 { margin: 0 0 10px; color: var(--heading); font-size: clamp(20px, 2.2vw, 27px); }
.faq-item p { margin: 0; color: var(--muted); }

.compliance-panel { display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(28px, 6vw, 70px); margin-top: clamp(64px, 8vw, 104px); margin-bottom: clamp(64px, 8vw, 104px); padding: clamp(32px, 5vw, 58px); border: 1px solid var(--border); border-radius: var(--radius-xl); background: #fff; box-shadow: var(--shadow); }
.compliance-panel h2 { margin-bottom: 0; }
.compliance-copy p { margin: 0; color: var(--muted); }
.compliance-copy p + p { margin-top: 12px; }
.cta-panel { display: flex; align-items: center; justify-content: space-between; gap: 30px; margin-bottom: clamp(64px, 8vw, 104px); padding: clamp(32px, 5vw, 58px); border-radius: var(--radius-xl); background: linear-gradient(135deg, #0d9edc, #0c5fa8); color: #fff; box-shadow: 0 24px 60px rgba(7,58,104,.24); }
.cta-panel h2 { color: #fff; margin-bottom: 10px; }
.cta-panel p { max-width: 720px; margin: 0; color: rgba(255,255,255,.84); }
.main-btn--light { background: #fff; color: var(--primary-deep); box-shadow: none; }

.stat-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.stat-list article { padding: 24px 14px; border: 1px solid var(--border); border-radius: var(--radius-lg); background: #fff; text-align: center; box-shadow: var(--shadow-soft); }
.stat-list strong { display: block; color: var(--primary-deep); font-size: 34px; line-height: 1.1; }
.stat-list span { color: var(--muted); font-size: 14px; }
.quote-panel { display: grid; place-items: center; min-height: 270px; padding: 44px; border-radius: var(--radius-xl); background: linear-gradient(145deg, #0b7fc2, #0b4e8b); color: #fff; box-shadow: var(--shadow); }
.quote-panel p { margin: 0; max-width: 560px; font-size: clamp(24px, 3vw, 36px); font-weight: 800; line-height: 1.45; }
.quote-panel--wide { min-height: auto; text-align: center; }

.site-footer { background: #073A68; color: #EAF8FF; }
.footer-inner { width: min(100% - 32px, 1240px); margin-inline: auto; display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: clamp(28px, 5vw, 68px); padding: 64px 0 44px; }
.footer-brand img { width: 138px; max-height: 52px; object-fit: contain; filter: brightness(0) invert(1); }
.footer-brand p, .footer-column p { color: rgba(234,248,255,.72); }
.footer-column { display: flex; flex-direction: column; align-items: flex-start; gap: 9px; }
.footer-column h2 { margin: 0 0 8px; font-size: 17px; }
.footer-column a { color: rgba(234,248,255,.82); }
.footer-column a:hover { color: #fff; }
.footer-bottom { width: min(100% - 32px, 1240px); margin-inline: auto; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 22px 0; border-top: 1px solid rgba(234,248,255,.14); }
.footer-bottom p { margin: 0; color: rgba(234,248,255,.66); font-size: 14px; }
.footer-register { color: #fff; font-weight: 900; }

@media (max-width: 1180px) {
    .desktop-nav { display: none; }
    .menu-toggle { display: block; }
    .header-inner { justify-content: space-between; }
}

@media (max-width: 980px) {
    .card-grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .card-grid--3, .review-grid, .feature-row, .prose-grid, .notice-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .split-section, .split-section--reverse, .page-intro { grid-template-columns: 1fr; }
    .split-section--reverse .split-media { order: 2; }
    .page-intro { padding: 44px; }
    .page-intro__media { max-width: 620px; margin-inline: auto; }
    .dual-panels { grid-template-columns: 1fr; }
    .compliance-panel { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1.4fr 1fr 1fr; }
    .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 720px) {
    :root { --header-height: 68px; --radius-xl: 22px; }
    main { padding-top: calc(var(--header-height) + 16px); }
    .section-shell, .header-inner { width: min(100% - 22px, 1240px); }
    .header-register { min-width: 68px; padding-inline: 16px; }
    .brand-logo img { width: 108px; }
    .carousel-track { aspect-ratio: 16 / 9; min-height: 210px; }
    .carousel-arrow { width: 40px; height: 40px; font-size: 29px; }
    .carousel-arrow--prev { left: 10px; }
    .carousel-arrow--next { right: 10px; }
    .carousel-dots { bottom: 12px; }
    .page-intro { min-height: auto; padding: 34px 24px; }
    .page-intro h1, .split-copy h1 { font-size: clamp(30px, 10vw, 44px); }
    .content-section { padding: 58px 0; }
    .brand-welcome { margin-top: 58px; margin-bottom: 58px; }
    .card-grid--3, .card-grid--4, .review-grid, .feature-row, .prose-grid, .notice-grid, .faq-grid { grid-template-columns: 1fr; }
    .info-card__body { padding: 20px; }
    .steps-list li { grid-template-columns: 46px minmax(0, 1fr); padding: 18px; gap: 14px; }
    .step-number { width: 46px; height: 46px; border-radius: 14px; }
    .faq-item { grid-template-columns: 1fr; gap: 12px; }
    .faq-index { width: 50px; height: 50px; }
    .cta-panel { align-items: flex-start; flex-direction: column; }
    .cta-actions { width: 100%; }
    .cta-actions a { flex: 1; }
    .stat-list { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1fr 1fr; padding-top: 48px; }
    .footer-brand { grid-column: 1 / -1; }
    .footer-bottom { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 430px) {
    .header-actions { gap: 7px; }
    .header-register { min-width: 62px; padding-inline: 14px; font-size: 14px; }
    .menu-toggle { width: 42px; height: 42px; }
    .drawer-nav { grid-template-columns: 1fr; }
    .carousel-track { min-height: 180px; }
    .intro-actions > *, .cta-actions > * { width: 100%; }
    .footer-inner { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}