/* 开云全站样式 */
:root {
    --bg: #F4FBFF;
    --surface: #FFFFFF;
    --surface-soft: #E8F7FF;
    --title: #11AEEA;
    --primary: #1688D8;
    --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: 0 18px 50px rgba(21, 90, 157, 0.12);
    --shadow-soft: 0 10px 30px rgba(21, 90, 157, 0.08);
    --radius-lg: 28px;
    --radius-md: 20px;
    --radius-sm: 14px;
    --header-height: 78px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

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

button {
    font: inherit;
}

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

h1,
h2,
h3 {
    line-height: 1.3;
}

p:last-child {
    margin-bottom: 0;
}

.skip-link {
    position: fixed;
    top: -80px;
    left: 16px;
    z-index: 2000;
    padding: 10px 16px;
    border-radius: 10px;
    background: var(--primary);
    color: #fff;
    transition: top .2s ease;
}

.skip-link:focus {
    top: 12px;
}

.container {
    width: min(100% - 32px, 1240px);
    margin-inline: auto;
}

.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 26px rgba(21, 90, 157, 0.06);
    backdrop-filter: blur(14px);
}

.header-container {
    width: min(100% - 32px, 1360px);
    height: 100%;
    margin-inline: auto;
    display: flex;
    align-items: center;
    gap: clamp(12px, 1.5vw, 24px);
}

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

.brand-logo img {
    width: clamp(108px, 10vw, 150px);
    max-height: 48px;
    object-fit: contain;
}

.desktop-nav {
    flex: 1;
    min-width: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(6px, .75vw, 14px);
}

.nav-link {
    position: relative;
    flex: 0 0 auto;
    padding: 10px clamp(4px, .35vw, 8px);
    color: var(--text);
    font-size: clamp(13px, .92vw, 15px);
    font-weight: 700;
    white-space: nowrap;
    transition: color .2s ease;
}

.nav-link::after {
    content: "";
    position: absolute;
    left: 50%;
    right: 50%;
    bottom: 3px;
    height: 2px;
    border-radius: 999px;
    background: var(--gradient);
    transition: left .2s ease, right .2s ease;
}

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

.nav-link:hover::after,
.nav-link.is-active::after {
    left: 8px;
    right: 8px;
}

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

.main-btn,
.secondary-btn,
.text-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 44px;
    border-radius: 999px;
    font-weight: 800;
    transition: transform .2s ease, box-shadow .2s ease, opacity .2s ease;
}

.main-btn {
    padding: 10px 22px;
    background: var(--gradient);
    color: #fff;
    box-shadow: 0 10px 24px rgba(22, 136, 216, 0.26);
    white-space: nowrap;
}

.main-btn:hover,
.secondary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 28px rgba(22, 136, 216, 0.25);
}

.secondary-btn {
    padding: 10px 20px;
    border: 1px solid var(--border);
    background: #fff;
    color: var(--deep);
}

.text-link {
    min-height: auto;
    justify-content: flex-start;
    color: var(--primary);
    font-size: 14px;
}

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

.menu-toggle {
    display: none;
    width: 46px;
    height: 46px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--surface-soft);
    cursor: pointer;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
}

.menu-toggle span {
    width: 20px;
    height: 2px;
    border-radius: 999px;
    background: var(--deep);
}

.drawer-overlay {
    position: fixed;
    inset: 0;
    z-index: 1090;
    background: rgba(7, 58, 104, 0.42);
    opacity: 0;
    transition: opacity .22s ease;
}

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

.mobile-drawer {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 1100;
    width: min(88vw, 380px);
    height: 100dvh;
    padding: 22px;
    background: #fff;
    box-shadow: -18px 0 50px rgba(7, 58, 104, 0.2);
    transform: translateX(105%);
    transition: transform .24s ease;
    overflow-y: auto;
}

.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: 138px;
    max-height: 50px;
    object-fit: contain;
}

.drawer-close {
    width: 42px;
    height: 42px;
    border: 0;
    border-radius: 50%;
    background: var(--surface-soft);
    color: var(--deep);
    font-size: 28px;
    line-height: 1;
    cursor: pointer;
}

.mobile-nav {
    display: grid;
    gap: 5px;
    padding: 18px 0;
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 12px 14px;
    border-radius: 12px;
    color: var(--text);
    font-weight: 700;
}

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

.drawer-register {
    width: 100%;
}

main {
    min-height: 60vh;
}

.section {
    padding: clamp(54px, 7vw, 96px) 0;
}

.section-sm {
    padding: clamp(36px, 5vw, 64px) 0;
}

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

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

.section-head {
    max-width: 760px;
    margin-bottom: 32px;
}

.section-head.center {
    margin-inline: auto;
    text-align: center;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    color: var(--primary);
    font-size: 13px;
    font-weight: 900;
    letter-spacing: .12em;
}

.eyebrow::before {
    content: "";
    width: 24px;
    height: 3px;
    border-radius: 999px;
    background: var(--gradient);
}

.section-head h2,
.page-copy h2,
.compliance-box h2 {
    margin-bottom: 14px;
    color: var(--deep);
    font-size: clamp(28px, 4vw, 44px);
}

.section-head p,
.page-copy p {
    color: var(--muted);
}

.page-hero {
    position: relative;
    overflow: hidden;
    padding: clamp(58px, 8vw, 104px) 0;
    background:
        radial-gradient(circle at 88% 18%, rgba(53, 215, 255, .24), transparent 32%),
        radial-gradient(circle at 15% 90%, rgba(22, 136, 216, .14), transparent 30%),
        linear-gradient(180deg, #ffffff 0%, #eefaff 100%);
}

.page-hero::before,
.page-hero::after {
    content: "";
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
}

.page-hero::before {
    width: 260px;
    height: 260px;
    top: -130px;
    right: 4%;
    border: 48px solid rgba(17, 174, 234, .08);
}

.page-hero::after {
    width: 130px;
    height: 130px;
    bottom: -70px;
    left: 7%;
    background: rgba(53, 215, 255, .1);
}

.hero-grid,
.split-layout {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(320px, .9fr);
    align-items: center;
    gap: clamp(30px, 6vw, 74px);
}

.hero-copy h1 {
    margin-bottom: 18px;
    color: var(--deep);
    font-size: clamp(38px, 6vw, 68px);
    letter-spacing: -.03em;
}

.hero-copy .lead {
    max-width: 720px;
    margin-bottom: 26px;
    color: var(--muted);
    font-size: clamp(16px, 1.7vw, 20px);
}

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

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

.hero-image img,
.content-image img {
    width: 100%;
    height: auto;
    max-height: 540px;
    object-fit: contain;
    background: #fff;
}

.carousel-section {
    padding: 24px 0 0;
}

.carousel {
    position: relative;
    overflow: hidden;
    width: min(100% - 32px, 1360px);
    margin-inline: auto;
    aspect-ratio: 21 / 7.6;
    min-height: 260px;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--surface-soft);
    box-shadow: var(--shadow);
}

.carousel-track {
    position: relative;
    width: 100%;
    height: 100%;
}

.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: var(--surface-soft);
}

.carousel-arrow {
    position: absolute;
    top: 50%;
    z-index: 3;
    width: 46px;
    height: 46px;
    border: 1px solid rgba(255,255,255,.72);
    border-radius: 50%;
    background: rgba(7, 58, 104, .58);
    color: #fff;
    font-size: 28px;
    cursor: pointer;
    transform: translateY(-50%);
    backdrop-filter: blur(8px);
}

.carousel-arrow:hover {
    background: rgba(7, 58, 104, .8);
}

.carousel-arrow.prev { left: 18px; }
.carousel-arrow.next { right: 18px; }

.carousel-dots {
    position: absolute;
    left: 50%;
    bottom: 18px;
    z-index: 3;
    display: flex;
    gap: 8px;
    transform: translateX(-50%);
}

.carousel-dot {
    width: 10px;
    height: 10px;
    padding: 0;
    border: 0;
    border-radius: 50%;
    background: rgba(255,255,255,.66);
    box-shadow: 0 0 0 1px rgba(7,58,104,.12);
    cursor: pointer;
    transition: width .2s ease, border-radius .2s ease, background .2s ease;
}

.carousel-dot.is-active {
    width: 30px;
    border-radius: 999px;
    background: #fff;
}

.card-grid,
.quick-grid,
.feedback-grid,
.stats-grid,
.feature-grid,
.step-grid,
.faq-grid {
    display: grid;
    gap: 20px;
}

.card-grid.three,
.feature-grid,
.feedback-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

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

.info-card,
.quick-card,
.feature-card,
.step-card,
.feedback-card,
.stat-card,
.faq-card,
.notice-card {
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: #fff;
    box-shadow: var(--shadow-soft);
}

.info-card,
.feature-card,
.step-card,
.notice-card {
    padding: clamp(22px, 3vw, 30px);
}

.quick-card {
    min-height: 220px;
    padding: 22px;
    display: flex;
    flex-direction: column;
    transition: transform .2s ease, box-shadow .2s ease;
}

.quick-card:hover,
.info-card:hover,
.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.quick-index,
.card-icon,
.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    margin-bottom: 18px;
    border-radius: 14px;
    background: var(--surface-soft);
    color: var(--primary);
    font-weight: 900;
}

.quick-card h3,
.info-card h3,
.feature-card h3,
.step-card h3,
.feedback-card h3,
.faq-card h3,
.notice-card h3 {
    margin-bottom: 10px;
    color: var(--deep);
    font-size: 20px;
}

.quick-card p,
.info-card p,
.feature-card p,
.step-card p,
.feedback-card p,
.faq-card p,
.notice-card p {
    color: var(--muted);
}

.quick-card .text-link {
    margin-top: auto;
}

.product-list {
    display: grid;
    gap: 14px;
    margin: 20px 0 0;
    padding: 0;
    list-style: none;
}

.product-list li {
    position: relative;
    padding-left: 24px;
    color: var(--muted);
}

.product-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: .7em;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--gradient);
}

.pill-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 22px;
}

.pill {
    display: inline-flex;
    padding: 8px 14px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: #fff;
    color: var(--deep);
    font-size: 14px;
    font-weight: 700;
}

.feedback-card {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 24px;
}

.feedback-avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 46px;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: var(--gradient);
    color: #fff;
    font-weight: 900;
}

.feedback-card h3 {
    font-size: 16px;
}

.feedback-card p {
    margin: 0;
    font-size: 15px;
}

.stats-grid {
    margin-top: 28px;
}

.stat-card {
    padding: 24px;
    text-align: center;
}

.stat-card strong {
    display: block;
    color: var(--primary);
    font-size: clamp(26px, 4vw, 42px);
    line-height: 1.2;
}

.stat-card span {
    color: var(--muted);
    font-size: 14px;
}

.timeline {
    position: relative;
    display: grid;
    gap: 18px;
    margin-top: 28px;
}

.timeline-item {
    display: grid;
    grid-template-columns: 46px minmax(0, 1fr);
    gap: 16px;
    align-items: start;
}

.timeline-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: var(--gradient);
    color: #fff;
    font-weight: 900;
    box-shadow: 0 10px 22px rgba(22, 136, 216, .2);
}

.timeline-content {
    padding: 18px 20px;
    border: 1px solid var(--border);
    border-radius: 16px;
    background: #fff;
}

.timeline-content h3 {
    margin-bottom: 6px;
    color: var(--deep);
}

.timeline-content p {
    margin: 0;
    color: var(--muted);
}

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

.info-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 720px;
}

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

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

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

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

.faq-grid {
    grid-template-columns: 1fr 1fr;
}

.faq-card,
details.faq-card {
    padding: 0;
    overflow: hidden;
}

.faq-card summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 22px 24px;
    color: var(--deep);
    font-weight: 800;
    cursor: pointer;
    list-style: none;
}

.faq-card summary::-webkit-details-marker {
    display: none;
}

.faq-card summary::after {
    content: "+";
    flex: 0 0 auto;
    color: var(--primary);
    font-size: 24px;
}

.faq-card[open] summary::after {
    content: "−";
}

.faq-answer {
    padding: 0 24px 22px;
    color: var(--muted);
}

.compliance-section {
    padding-top: 0;
}

.compliance-box {
    padding: clamp(28px, 5vw, 52px);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background:
        linear-gradient(135deg, rgba(232,247,255,.96), rgba(255,255,255,.96)),
        #fff;
    box-shadow: var(--shadow);
}

.compliance-box p {
    max-width: 980px;
    color: var(--muted);
}

.cta-panel {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
    padding: clamp(28px, 5vw, 52px);
    border-radius: var(--radius-lg);
    background: var(--gradient);
    color: #fff;
    box-shadow: var(--shadow);
}

.cta-panel h2 {
    margin-bottom: 10px;
    color: #fff;
    font-size: clamp(26px, 4vw, 42px);
}

.cta-panel p {
    max-width: 760px;
    margin: 0;
    color: rgba(255,255,255,.9);
}

.cta-panel .secondary-btn {
    flex: 0 0 auto;
    border-color: rgba(255,255,255,.62);
}

.site-footer {
    padding: 64px 0 24px;
    background: var(--footer);
    color: var(--footer-text);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr repeat(3, minmax(150px, 1fr));
    gap: 36px;
}

.footer-brand p {
    max-width: 430px;
    margin-top: 20px;
    color: rgba(234,248,255,.74);
}

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

.footer-links {
    display: grid;
    gap: 10px;
}

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

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

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    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: 13px;
}

@media (max-width: 1179px) {
    .desktop-nav {
        display: none;
    }

    .menu-toggle {
        display: inline-flex;
    }

    .header-container {
        justify-content: space-between;
    }

    .brand-logo {
        margin-right: auto;
    }
}

@media (max-width: 1024px) {
    .hero-grid,
    .split-layout {
        grid-template-columns: 1fr;
    }

    .hero-image,
    .content-image {
        max-width: 760px;
    }

    .quick-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

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

    .footer-grid {
        grid-template-columns: 1.4fr repeat(2, 1fr);
    }

    .footer-grid > div:last-child {
        grid-column: 2 / -1;
    }
}

@media (max-width: 760px) {
    :root {
        --header-height: 70px;
        --radius-lg: 22px;
        --radius-md: 17px;
    }

    .container,
    .header-container,
    .carousel {
        width: min(100% - 24px, 1240px);
    }

    .brand-logo img {
        width: 112px;
    }

    .main-btn {
        min-height: 42px;
        padding: 9px 17px;
    }

    .header-actions {
        gap: 8px;
    }

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

    .carousel-section {
        padding-top: 14px;
    }

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

    .carousel-arrow {
        width: 40px;
        height: 40px;
        font-size: 24px;
    }

    .carousel-arrow.prev { left: 10px; }
    .carousel-arrow.next { right: 10px; }

    .carousel-dots {
        bottom: 12px;
    }

    .quick-grid,
    .card-grid.three,
    .feature-grid,
    .feedback-grid,
    .faq-grid {
        grid-template-columns: 1fr;
    }

    .card-grid.four,
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }

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

    .cta-panel,
    .footer-bottom {
        align-items: flex-start;
        flex-direction: column;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }

    .footer-brand {
        grid-column: 1 / -1;
    }

    .footer-grid > div:last-child {
        grid-column: auto;
    }
}

@media (max-width: 520px) {
    .section {
        padding: 52px 0;
    }

    .section-sm {
        padding: 34px 0;
    }

    .page-hero {
        padding: 52px 0 60px;
    }

    .hero-actions {
        display: grid;
        grid-template-columns: 1fr;
    }

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

    .card-grid.four,
    .stats-grid,
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid > div:last-child {
        grid-column: auto;
    }

    .feedback-card {
        padding: 20px;
    }
}

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