/* 开云全站样式 */
:root {
    --bg: #F4FBFF;
    --surface: #FFFFFF;
    --surface-soft: #E8F7FF;
    --primary: #11AEEA;
    --primary-strong: #1688D8;
    --text-deep: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --border: rgba(17, 174, 234, 0.18);
    --footer: #073A68;
    --footer-text: #EAF8FF;
    --gradient: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%);
    --shadow-sm: 0 10px 28px rgba(21, 90, 157, 0.09);
    --shadow-md: 0 18px 52px rgba(21, 90, 157, 0.14);
    --radius-sm: 14px;
    --radius-md: 22px;
    --radius-lg: 30px;
    --header-height: 76px;
    --container: min(100% - 32px, 1360px);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--header-height) + 20px);
}

body {
    margin: 0;
    min-width: 320px;
    overflow-x: hidden;
    background: var(--bg);
    color: var(--text);
    font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK 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,
a {
    -webkit-tap-highlight-color: transparent;
}

.skip-link {
    position: fixed;
    top: 8px;
    left: 8px;
    z-index: 9999;
    transform: translateY(-150%);
    padding: 10px 16px;
    border-radius: 10px;
    background: var(--footer);
    color: #fff;
}

.skip-link:focus {
    transform: translateY(0);
}

.site-header {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 1000;
    height: var(--header-height);
    border-bottom: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 8px 30px rgba(21, 90, 157, 0.06);
    backdrop-filter: blur(14px);
}

.header-shell {
    width: min(100% - 32px, 1360px);
    height: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: clamp(14px, 1.8vw, 30px);
}

.brand-logo,
.drawer-logo,
.footer-logo {
    display: inline-flex;
    align-items: center;
    flex: 0 0 auto;
}

.brand-logo img {
    width: clamp(98px, 8vw, 132px);
    height: 46px;
    object-fit: contain;
}

.desktop-nav {
    min-width: 0;
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(6px, 0.65vw, 14px);
    white-space: nowrap;
}

.desktop-nav a {
    position: relative;
    flex: 0 0 auto;
    padding: 10px clamp(3px, 0.25vw, 6px);
    color: var(--text-deep);
    font-size: clamp(13px, 0.86vw, 15px);
    font-weight: 600;
    line-height: 1;
    transition: color .2s ease;
}

.desktop-nav a::after {
    content: "";
    position: absolute;
    left: 50%;
    right: 50%;
    bottom: 1px;
    height: 2px;
    border-radius: 999px;
    background: var(--gradient);
    transition: left .2s ease, right .2s ease;
}

.desktop-nav a:hover,
.desktop-nav a.is-active {
    color: var(--primary);
}

.desktop-nav a:hover::after,
.desktop-nav a.is-active::after {
    left: 10%;
    right: 10%;
}

.header-actions {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    gap: 10px;
}

.main-btn,
.secondary-btn,
.text-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: 999px;
    font-weight: 700;
    white-space: nowrap;
    transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}

.main-btn {
    min-height: 42px;
    padding: 0 22px;
    background: var(--gradient);
    color: #fff;
    box-shadow: 0 10px 22px rgba(22, 136, 216, 0.25);
}

.main-btn:hover,
.secondary-btn:hover {
    transform: translateY(-2px);
}

.main-btn:hover {
    box-shadow: 0 14px 28px rgba(22, 136, 216, 0.3);
}

.secondary-btn {
    min-height: 42px;
    padding: 0 20px;
    border: 1px solid var(--border);
    background: #fff;
    color: var(--primary-strong);
}

.text-link {
    color: var(--primary-strong);
    font-size: 15px;
}

.text-link::after {
    content: "→";
}

.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border: 1px solid var(--border);
    border-radius: 13px;
    background: #fff;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
}

.menu-toggle span {
    width: 20px;
    height: 2px;
    border-radius: 99px;
    background: var(--text-deep);
}

.drawer-backdrop {
    position: fixed;
    inset: 0;
    z-index: 1090;
    background: rgba(7, 58, 104, 0.45);
    opacity: 0;
    transition: opacity .22s ease;
}

.drawer-backdrop.is-visible {
    opacity: 1;
}

.mobile-drawer {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 1100;
    width: min(88vw, 380px);
    height: 100dvh;
    padding: 22px;
    overflow-y: auto;
    background: #fff;
    box-shadow: -20px 0 60px rgba(7, 58, 104, 0.22);
    transform: translateX(105%);
    transition: transform .24s ease;
}

.mobile-drawer.is-open {
    transform: translateX(0);
}

.drawer-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--border);
}

.drawer-logo img,
.footer-logo img {
    width: 118px;
    height: 48px;
    object-fit: contain;
}

.drawer-close {
    width: 42px;
    height: 42px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--surface-soft);
    color: var(--text-deep);
    font-size: 28px;
    line-height: 1;
    cursor: pointer;
}

.mobile-nav {
    display: grid;
    gap: 8px;
    padding: 18px 0;
}

.mobile-nav a {
    display: flex;
    align-items: center;
    min-height: 46px;
    padding: 0 16px;
    border-radius: 13px;
    color: var(--text-deep);
    font-weight: 650;
}

.mobile-nav a:hover,
.mobile-nav a.is-active {
    background: var(--surface-soft);
    color: var(--primary-strong);
}

.drawer-main-btn {
    width: 100%;
}

.site-main {
    min-height: 60vh;
    padding-top: var(--header-height);
}

.container {
    width: var(--container);
    margin-inline: auto;
}

.section {
    padding: clamp(58px, 7vw, 96px) 0;
}

.section-tight {
    padding: clamp(42px, 5vw, 68px) 0;
}

.section-soft {
    background: var(--surface-soft);
}

.section-white {
    background: #fff;
}

.section-heading {
    max-width: 820px;
    margin: 0 auto clamp(28px, 4vw, 46px);
    text-align: center;
}

.section-heading.align-left {
    max-width: none;
    margin-left: 0;
    text-align: left;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    padding: 0 12px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.78);
    color: var(--primary-strong);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .06em;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1,
h2,
h3 {
    color: var(--text-deep);
    line-height: 1.28;
}

h1 {
    margin-bottom: 18px;
    font-size: clamp(34px, 5vw, 66px);
    letter-spacing: -.04em;
}

h2 {
    margin-bottom: 14px;
    font-size: clamp(28px, 3.5vw, 44px);
    letter-spacing: -.025em;
}

h3 {
    margin-bottom: 10px;
    font-size: clamp(19px, 2vw, 24px);
}

.section-heading p,
.lead,
.hero-copy p {
    color: var(--muted);
    font-size: clamp(16px, 1.4vw, 19px);
}

.page-hero {
    position: relative;
    overflow: hidden;
    padding: clamp(72px, 9vw, 124px) 0 clamp(60px, 7vw, 94px);
    background:
        radial-gradient(circle at 82% 18%, rgba(53, 215, 255, .28), transparent 28%),
        radial-gradient(circle at 18% 80%, rgba(17, 174, 234, .18), transparent 32%),
        linear-gradient(180deg, #ffffff 0%, #eaf8ff 100%);
}

.page-hero::before,
.page-hero::after {
    content: "";
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(17, 174, 234, .18);
}

.page-hero::before {
    width: 360px;
    height: 360px;
    top: -180px;
    right: -80px;
}

.page-hero::after {
    width: 220px;
    height: 220px;
    bottom: -130px;
    left: 8%;
}

.hero-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(320px, .92fr);
    align-items: center;
    gap: clamp(34px, 6vw, 82px);
}

.hero-copy {
    max-width: 760px;
}

.hero-copy .eyebrow {
    margin-bottom: 18px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 26px;
}

.hero-media,
.content-media {
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: #fff;
    box-shadow: var(--shadow-md);
}

.hero-media img,
.content-media img {
    width: 100%;
    height: auto;
    object-fit: contain;
}

.carousel-section {
    padding: clamp(20px, 3vw, 34px) 0 0;
}

.home-carousel {
    position: relative;
    overflow: hidden;
    width: var(--container);
    margin: 0 auto;
    aspect-ratio: 16 / 6.2;
    min-height: 260px;
    border: 1px solid var(--border);
    border-radius: clamp(18px, 2.5vw, 30px);
    background: var(--surface-soft);
    box-shadow: var(--shadow-md);
}

.carousel-track,
.carousel-slide {
    position: absolute;
    inset: 0;
}

.carousel-slide {
    opacity: 0;
    transition: opacity .55s ease;
    pointer-events: none;
}

.carousel-slide.is-active {
    opacity: 1;
    pointer-events: auto;
}

.carousel-slide img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: #fff;
}

.carousel-arrow {
    position: absolute;
    top: 50%;
    z-index: 4;
    width: clamp(42px, 4vw, 54px);
    height: clamp(42px, 4vw, 54px);
    border: 1px solid rgba(255, 255, 255, .68);
    border-radius: 50%;
    background: rgba(7, 58, 104, .55);
    color: #fff;
    font-size: 28px;
    line-height: 1;
    cursor: pointer;
    transform: translateY(-50%);
    backdrop-filter: blur(8px);
}

.carousel-arrow:hover {
    background: rgba(7, 58, 104, .78);
}

.carousel-arrow.prev { left: clamp(10px, 2vw, 24px); }
.carousel-arrow.next { right: clamp(10px, 2vw, 24px); }

.carousel-dots {
    position: absolute;
    left: 50%;
    bottom: clamp(12px, 2vw, 22px);
    z-index: 5;
    display: flex;
    gap: 9px;
    transform: translateX(-50%);
}

.carousel-dot {
    width: 10px;
    height: 10px;
    padding: 0;
    border: 1px solid rgba(255, 255, 255, .9);
    border-radius: 50%;
    background: rgba(7, 58, 104, .45);
    cursor: pointer;
    transition: width .2s ease, border-radius .2s ease, background .2s ease;
}

.carousel-dot.is-active {
    width: 28px;
    border-radius: 999px;
    background: #fff;
}

.content-split {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(320px, .92fr);
    align-items: center;
    gap: clamp(34px, 6vw, 84px);
}

.content-split.reverse .content-media {
    order: -1;
}

.content-copy p {
    color: var(--muted);
}

.check-list,
.plain-list {
    display: grid;
    gap: 12px;
    padding: 0;
    margin: 22px 0 0;
    list-style: none;
}

.check-list li,
.plain-list li {
    position: relative;
    padding-left: 28px;
    color: var(--text);
}

.check-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    top: 0;
    color: var(--primary);
    font-weight: 800;
}

.plain-list li::before {
    content: "";
    position: absolute;
    left: 4px;
    top: .72em;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--gradient);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(16px, 2vw, 24px);
}

.card-grid.four {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.info-card,
.quick-card,
.review-card,
.notice-card,
.stat-card,
.contact-card {
    min-width: 0;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: #fff;
    box-shadow: var(--shadow-sm);
}

.info-card,
.quick-card,
.review-card,
.notice-card,
.contact-card {
    padding: clamp(22px, 2.8vw, 32px);
}

.info-card,
.quick-card {
    transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}

.info-card:hover,
.quick-card:hover {
    transform: translateY(-5px);
    border-color: rgba(17, 174, 234, .36);
    box-shadow: var(--shadow-md);
}

.info-card p,
.quick-card p,
.review-card p,
.notice-card p,
.contact-card p {
    color: var(--muted);
}

.card-kicker {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    margin-bottom: 16px;
    padding: 0 10px;
    border-radius: 999px;
    background: var(--surface-soft);
    color: var(--primary-strong);
    font-size: 13px;
    font-weight: 700;
}

.quick-grid {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 16px;
}

.quick-card {
    display: flex;
    flex-direction: column;
    min-height: 232px;
}

.quick-card .text-link {
    margin-top: auto;
    align-self: flex-start;
}

.media-card-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(18px, 2.4vw, 28px);
}

.media-card {
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: #fff;
    box-shadow: var(--shadow-sm);
}

.media-card img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: contain;
    background: #f8fdff;
}

.media-card-body {
    padding: clamp(22px, 2.6vw, 30px);
}

.media-card-body p {
    color: var(--muted);
}

.feature-band {
    overflow: hidden;
    position: relative;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, #ffffff 0%, #e7f8ff 100%);
    box-shadow: var(--shadow-md);
}

.feature-band-inner {
    display: grid;
    grid-template-columns: minmax(0, 1.12fr) minmax(260px, .88fr);
    align-items: center;
    gap: 34px;
    padding: clamp(28px, 5vw, 64px);
}

.feature-band p {
    color: var(--muted);
}

.feature-band img {
    width: 100%;
    max-height: 360px;
    object-fit: contain;
}

.review-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.review-card {
    display: flex;
    flex-direction: column;
    min-height: 230px;
}

.review-card blockquote {
    margin: 0;
    color: var(--text);
    font-size: 16px;
}

.review-card footer {
    margin-top: auto;
    padding-top: 22px;
    color: var(--primary-strong);
    font-weight: 700;
}

.review-stars {
    margin-bottom: 14px;
    color: var(--primary);
    letter-spacing: .12em;
}

.notice-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
}

.notice-card strong {
    color: var(--text-deep);
}

.steps {
    counter-reset: step;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

.step-card {
    counter-increment: step;
    position: relative;
    min-height: 240px;
    padding: 74px 26px 28px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: #fff;
    box-shadow: var(--shadow-sm);
}

.step-card::before {
    content: counter(step, decimal-leading-zero);
    position: absolute;
    top: 24px;
    left: 26px;
    color: var(--primary);
    font-size: 30px;
    font-weight: 800;
    line-height: 1;
}

.step-card p {
    color: var(--muted);
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

.stat-card {
    padding: 26px;
    text-align: center;
}

.stat-card strong {
    display: block;
    margin-bottom: 6px;
    color: var(--primary-strong);
    font-size: clamp(26px, 4vw, 42px);
}

.stat-card span {
    color: var(--muted);
}

.faq-list {
    display: grid;
    gap: 14px;
    max-width: 980px;
    margin: 0 auto;
}

.faq-item {
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: #fff;
    box-shadow: var(--shadow-sm);
}

.faq-question {
    width: 100%;
    min-height: 68px;
    padding: 18px 58px 18px 22px;
    border: 0;
    background: transparent;
    color: var(--text-deep);
    font-weight: 750;
    text-align: left;
    cursor: pointer;
    position: relative;
}

.faq-question::after {
    content: "+";
    position: absolute;
    top: 50%;
    right: 22px;
    color: var(--primary);
    font-size: 26px;
    line-height: 1;
    transform: translateY(-50%);
}

.faq-question[aria-expanded="true"]::after {
    content: "−";
}

.faq-answer {
    padding: 0 22px 22px;
    color: var(--muted);
}

.faq-answer p:last-child {
    margin-bottom: 0;
}

.legal-panel {
    border: 1px solid rgba(17, 174, 234, .24);
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, #0b4d84 0%, #0878b8 100%);
    color: #eaf8ff;
    box-shadow: var(--shadow-md);
}

.legal-panel-inner {
    padding: clamp(30px, 5vw, 58px);
}

.legal-panel h2,
.legal-panel h3 {
    color: #fff;
}

.legal-panel p,
.legal-panel li {
    color: #eaf8ff;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.contact-card {
    min-height: 230px;
}

.contact-card .main-btn,
.contact-card .secondary-btn {
    margin-top: 12px;
}

.table-wrap {
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: #fff;
    box-shadow: var(--shadow-sm);
}

.info-table {
    width: 100%;
    min-width: 680px;
    border-collapse: collapse;
}

.info-table th,
.info-table td {
    padding: 18px 20px;
    border-bottom: 1px solid var(--border);
    text-align: left;
    vertical-align: top;
}

.info-table th {
    width: 22%;
    background: var(--surface-soft);
    color: var(--text-deep);
}

.info-table td {
    color: var(--muted);
}

.info-table tr:last-child th,
.info-table tr:last-child td {
    border-bottom: 0;
}

.site-footer {
    background: var(--footer);
    color: var(--footer-text);
}

.footer-shell {
    width: var(--container);
    margin: 0 auto;
    display: grid;
    grid-template-columns: minmax(260px, .9fr) minmax(0, 1.5fr);
    gap: clamp(42px, 7vw, 100px);
    padding: clamp(54px, 7vw, 86px) 0;
}

.footer-brand p {
    max-width: 480px;
    margin: 22px 0 0;
    color: rgba(234, 248, 255, .78);
}

.footer-logo img {
    filter: brightness(0) invert(1);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
}

.footer-links h2 {
    margin-bottom: 16px;
    color: #fff;
    font-size: 17px;
}

.footer-links a {
    display: block;
    margin: 9px 0;
    color: rgba(234, 248, 255, .78);
    font-size: 14px;
}

.footer-links a:hover {
    color: #fff;
}

.footer-notice {
    width: var(--container);
    margin: 0 auto;
    padding: 24px 0 34px;
    border-top: 1px solid rgba(234, 248, 255, .14);
    text-align: center;
}

.footer-notice p {
    margin-bottom: 8px;
    color: rgba(234, 248, 255, .72);
    font-size: 13px;
}

@media (max-width: 1179px) {
    .desktop-nav { display: none; }
    .menu-toggle { display: flex; }
    .header-shell { gap: 14px; }
    .brand-logo { margin-right: auto; }
}

@media (max-width: 980px) {
    .hero-grid,
    .content-split,
    .feature-band-inner,
    .footer-shell {
        grid-template-columns: 1fr;
    }

    .content-split.reverse .content-media {
        order: 0;
    }

    .hero-media {
        max-width: 760px;
    }

    .quick-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .card-grid.four,
    .steps,
    .stat-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .card-grid,
    .review-grid,
    .contact-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 720px) {
    :root {
        --header-height: 68px;
        --container: min(100% - 24px, 1360px);
    }

    .header-shell {
        width: min(100% - 24px, 1360px);
    }

    .brand-logo img {
        width: 104px;
        height: 40px;
    }

    .main-btn {
        min-height: 40px;
        padding-inline: 18px;
    }

    .header-actions .main-btn {
        padding-inline: 16px;
    }

    .menu-toggle {
        width: 42px;
        height: 42px;
    }

    .home-carousel {
        aspect-ratio: 16 / 9;
        min-height: 210px;
    }

    .carousel-arrow {
        width: 40px;
        height: 40px;
        font-size: 22px;
    }

    .quick-grid,
    .card-grid,
    .card-grid.four,
    .media-card-grid,
    .review-grid,
    .notice-grid,
    .steps,
    .stat-grid,
    .contact-grid,
    .footer-links {
        grid-template-columns: 1fr;
    }

    .quick-card {
        min-height: 0;
    }

    .feature-band-inner {
        padding: 28px 22px;
    }

    .footer-shell {
        gap: 38px;
    }

    .footer-links {
        gap: 20px;
    }
}

@media (max-width: 420px) {
    .header-actions {
        gap: 7px;
    }

    .header-actions .main-btn {
        min-width: 66px;
        padding-inline: 13px;
        font-size: 14px;
    }

    .menu-toggle {
        width: 40px;
        height: 40px;
    }

    .carousel-arrow {
        display: none;
    }

    .hero-actions {
        display: grid;
    }

    .hero-actions .main-btn,
    .hero-actions .secondary-btn {
        width: 100%;
    }
}