* {
    box-sizing: border-box;
}

:root {
    --bg: #F4FBFF;
    --surface: #FFFFFF;
    --soft: #E8F7FF;
    --primary: #11AEEA;
    --primary-strong: #1688D8;
    --deep: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --border: rgba(17, 174, 234, 0.18);
    --footer: #073A68;
    --footer-text: #EAF8FF;
    --shadow: 0 18px 45px rgba(21, 90, 157, 0.10);
    --shadow-small: 0 10px 28px rgba(21, 90, 157, 0.08);
    --radius-xl: 28px;
    --radius-lg: 20px;
    --radius-md: 14px;
    --header-height: 76px;
}

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

body {
    margin: 0;
    color: var(--text);
    background: var(--bg);
    font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
    line-height: 1.75;
    overflow-x: hidden;
}

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 {
    color: var(--deep);
    line-height: 1.3;
}

h1 {
    font-size: clamp(2rem, 4vw, 4rem);
    letter-spacing: -0.03em;
}

h2 {
    font-size: clamp(1.65rem, 3vw, 2.7rem);
    letter-spacing: -0.02em;
}

h3 {
    font-size: clamp(1.08rem, 1.8vw, 1.35rem);
}

p {
    color: var(--muted);
}

.skip-link {
    position: fixed;
    top: 8px;
    left: 8px;
    z-index: 9999;
    padding: 10px 14px;
    border-radius: 10px;
    color: #fff;
    background: var(--primary-strong);
    transform: translateY(-140%);
}

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

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

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.96);
    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(12px, 2vw, 28px);
}

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

.brand-logo img {
    width: clamp(108px, 10vw, 148px);
    max-height: 46px;
    object-fit: contain;
}

.desktop-nav {
    min-width: 0;
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: clamp(8px, 1.2vw, 18px);
    overflow: hidden;
}

.desktop-nav a {
    position: relative;
    flex: 0 0 auto;
    color: var(--text);
    font-size: clamp(0.75rem, 0.86vw, 0.95rem);
    font-weight: 600;
    white-space: nowrap;
    transition: color .2s ease;
}

.desktop-nav a::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: -10px;
    width: 0;
    height: 3px;
    border-radius: 999px;
    background: var(--primary);
    transform: translateX(-50%);
    transition: width .2s ease;
}

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

.desktop-nav a.active::after,
.desktop-nav a:hover::after {
    width: 70%;
}

.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;
    min-height: 44px;
    padding: 0 22px;
    border-radius: 999px;
    font-weight: 700;
    transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}

.main-btn {
    color: #fff;
    background: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%);
    box-shadow: 0 10px 24px rgba(22, 136, 216, 0.24);
    white-space: nowrap;
}

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

.secondary-btn {
    color: var(--primary-strong);
    background: #fff;
    border: 1px solid var(--border);
}

.text-link {
    min-height: 0;
    padding: 0;
    color: var(--primary-strong);
    border-radius: 0;
}

.text-link::after {
    content: "→";
    margin-left: 8px;
}

.menu-toggle {
    display: none;
    width: 46px;
    height: 46px;
    padding: 0 12px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--surface);
    cursor: pointer;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    margin: 5px 0;
    border-radius: 999px;
    background: var(--deep);
}

.drawer-backdrop {
    position: fixed;
    inset: 0;
    z-index: 1190;
    background: rgba(7, 58, 104, 0.38);
}

.mobile-drawer {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 1200;
    width: min(88vw, 360px);
    height: 100dvh;
    padding: 22px;
    background: #fff;
    box-shadow: -20px 0 50px rgba(7, 58, 104, 0.18);
    transform: translateX(105%);
    transition: transform .25s ease;
    overflow-y: auto;
}

.mobile-drawer.open {
    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 img,
.footer-brand img {
    width: 132px;
    max-height: 46px;
    object-fit: contain;
}

.drawer-close {
    width: 42px;
    height: 42px;
    border: 0;
    border-radius: 12px;
    color: var(--deep);
    background: var(--soft);
    font-size: 1.8rem;
    line-height: 1;
    cursor: pointer;
}

.drawer-nav {
    display: grid;
    gap: 6px;
    padding: 18px 0;
}

.drawer-nav a {
    padding: 11px 14px;
    border-radius: 12px;
    color: var(--text);
    font-weight: 600;
}

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

.drawer-register {
    width: 100%;
}

main {
    min-height: 60vh;
}

.section {
    padding: clamp(60px, 8vw, 110px) 0;
}

.section-compact {
    padding: clamp(40px, 6vw, 75px) 0;
}

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

.section-heading {
    max-width: 780px;
    margin-bottom: clamp(28px, 4vw, 48px);
}

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

.section-heading h2 {
    margin: 8px 0 14px;
}

.section-heading p {
    margin-bottom: 0;
    font-size: 1.03rem;
}

.section-kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-strong);
    font-size: .86rem;
    font-weight: 800;
    letter-spacing: .08em;
}

.section-kicker::before {
    content: "";
    width: 22px;
    height: 3px;
    border-radius: 999px;
    background: var(--primary);
}

.page-hero {
    padding: clamp(62px, 8vw, 110px) 0;
    background:
        radial-gradient(circle at 85% 20%, rgba(53, 215, 255, 0.20), transparent 30%),
        linear-gradient(180deg, #FFFFFF 0%, #E8F7FF 100%);
}

.page-hero .container {
    display: grid;
    grid-template-columns: minmax(0, 1.12fr) minmax(280px, .88fr);
    align-items: center;
    gap: clamp(28px, 5vw, 72px);
}

.page-hero-copy {
    max-width: 720px;
}

.page-hero h1 {
    margin: 12px 0 18px;
}

.page-hero p {
    font-size: clamp(1rem, 1.5vw, 1.15rem);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 28px;
}

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

.hero-image img,
.content-image img {
    width: 100%;
    height: 100%;
    min-height: 260px;
    object-fit: contain;
}

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

.carousel {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16 / 6.2;
    min-height: 260px;
    border: 1px solid var(--border);
    border-radius: clamp(18px, 3vw, 32px);
    background: #fff;
    box-shadow: var(--shadow);
}

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

.carousel-slide {
    opacity: 0;
    visibility: hidden;
    transition: opacity .45s ease, visibility .45s ease;
}

.carousel-slide.active {
    opacity: 1;
    visibility: visible;
}

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

.carousel-arrow {
    position: absolute;
    top: 50%;
    z-index: 5;
    width: clamp(40px, 4vw, 54px);
    height: clamp(40px, 4vw, 54px);
    border: 1px solid rgba(255,255,255,.75);
    border-radius: 50%;
    color: #fff;
    background: rgba(7, 58, 104, 0.52);
    font-size: clamp(1.25rem, 2vw, 1.8rem);
    transform: translateY(-50%);
    cursor: pointer;
    backdrop-filter: blur(8px);
}

.carousel-arrow.prev { left: 16px; }
.carousel-arrow.next { right: 16px; }

.carousel-dots {
    position: absolute;
    left: 50%;
    bottom: 16px;
    z-index: 5;
    display: flex;
    gap: 9px;
    transform: translateX(-50%);
}

.carousel-dot {
    width: 10px;
    height: 10px;
    padding: 0;
    border: 0;
    border-radius: 50%;
    background: rgba(255,255,255,.72);
    box-shadow: 0 2px 8px rgba(7,58,104,.22);
    cursor: pointer;
}

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

.intro-panel {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(260px, .9fr);
    gap: clamp(24px, 5vw, 64px);
    align-items: center;
    padding: clamp(28px, 5vw, 56px);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    background: #fff;
    box-shadow: var(--shadow-small);
}

.intro-panel h1 {
    margin: 12px 0 18px;
}

.fact-list,
.feature-list,
.link-list {
    margin: 0;
    padding: 0;
    list-style: none;
}

.fact-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.fact-list li {
    padding: 18px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--soft);
}

.fact-list strong {
    display: block;
    margin-bottom: 4px;
    color: var(--deep);
}

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

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

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

.info-card,
.quick-card,
.review-card,
.faq-card,
.notice-card,
.step-card {
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: #fff;
    box-shadow: var(--shadow-small);
}

.info-card,
.quick-card,
.notice-card,
.step-card {
    padding: clamp(22px, 3vw, 32px);
}

.info-card h3,
.quick-card h3,
.notice-card h3,
.step-card h3 {
    margin-bottom: 10px;
}

.info-card p,
.quick-card p,
.notice-card p,
.step-card p {
    margin-bottom: 16px;
}

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

.quick-card {
    min-height: 225px;
    display: flex;
    flex-direction: column;
}

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

.split-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(300px, .9fr);
    gap: clamp(28px, 5vw, 70px);
    align-items: center;
}

.split-layout.reverse .content-image {
    order: -1;
}

.content-copy p:last-child {
    margin-bottom: 0;
}

.feature-list {
    display: grid;
    gap: 13px;
    margin-top: 24px;
}

.feature-list li {
    position: relative;
    padding-left: 30px;
    color: var(--muted);
}

.feature-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    top: 0;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    color: #fff;
    background: var(--primary-strong);
    font-size: .75rem;
    font-weight: 800;
    line-height: 22px;
    text-align: center;
}

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

.review-card {
    position: relative;
    min-height: 210px;
    padding: 30px;
}

.review-mark {
    position: absolute;
    top: 13px;
    right: 22px;
    color: rgba(17,174,234,.18);
    font-size: 4rem;
    font-weight: 900;
    line-height: 1;
}

.review-card p {
    position: relative;
    z-index: 1;
    color: var(--text);
}

.review-card span {
    color: var(--primary-strong);
    font-weight: 800;
}

.faq-list {
    display: grid;
    gap: 14px;
}

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

.faq-card details {
    padding: 0;
}

.faq-card summary {
    position: relative;
    padding: 22px 56px 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: "+";
    position: absolute;
    top: 50%;
    right: 24px;
    color: var(--primary-strong);
    font-size: 1.5rem;
    transform: translateY(-50%);
}

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

.faq-answer {
    padding: 0 24px 22px;
}

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

.compliance-box {
    display: grid;
    grid-template-columns: minmax(250px, .75fr) minmax(0, 1.25fr);
    gap: clamp(22px, 5vw, 60px);
    padding: clamp(28px, 5vw, 56px);
    border: 1px solid rgba(255,255,255,.55);
    border-radius: var(--radius-xl);
    background: rgba(255,255,255,.78);
    box-shadow: var(--shadow-small);
}

.compliance-box h2 {
    margin: 10px 0 0;
}

.compliance-copy p:last-child {
    margin-bottom: 0;
}

.metric-strip {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
}

.metric-item {
    padding: 24px;
    border-radius: var(--radius-lg);
    color: #fff;
    background: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%);
    box-shadow: 0 16px 34px rgba(22, 136, 216, .2);
}

.metric-item strong {
    display: block;
    margin-bottom: 5px;
    font-size: 1.25rem;
}

.metric-item span {
    opacity: .9;
}

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

.step-card .step-number {
    display: inline-flex;
    width: 38px;
    height: 38px;
    margin-bottom: 18px;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: #fff;
    background: var(--primary-strong);
    font-weight: 800;
}

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

.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 {
    color: var(--deep);
    background: var(--soft);
}

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

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

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr .75fr .75fr 1fr;
    gap: clamp(28px, 5vw, 64px);
    padding-top: 60px;
    padding-bottom: 52px;
}

.site-footer h2 {
    margin-bottom: 16px;
    color: #fff;
    font-size: 1rem;
}

.site-footer p,
.site-footer a,
.site-footer span {
    color: rgba(234,248,255,.82);
}

.footer-brand p {
    max-width: 420px;
    margin-top: 20px;
}

.footer-links {
    display: grid;
    align-content: start;
    gap: 9px;
}

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

.footer-bottom {
    border-top: 1px solid rgba(234,248,255,.15);
}

.footer-bottom .container {
    display: flex;
    justify-content: space-between;
    gap: 18px;
    padding-top: 18px;
    padding-bottom: 18px;
    font-size: .9rem;
}

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

    .menu-toggle {
        display: block;
    }

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

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

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

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

@media (max-width: 860px) {
    :root {
        --header-height: 68px;
    }

    .page-hero .container,
    .intro-panel,
    .split-layout,
    .compliance-box {
        grid-template-columns: 1fr;
    }

    .split-layout.reverse .content-image {
        order: 0;
    }

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

    .carousel {
        aspect-ratio: 16 / 8;
    }
}

@media (max-width: 640px) {
    .container,
    .header-inner {
        width: min(100% - 24px, 1240px);
    }

    .header-inner {
        gap: 8px;
    }

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

    .header-actions .main-btn {
        min-height: 40px;
        padding: 0 16px;
    }

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

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

    .carousel {
        min-height: 210px;
        aspect-ratio: 4 / 3;
        border-radius: 18px;
    }

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

    .carousel-arrow.prev { left: 10px; }
    .carousel-arrow.next { right: 10px; }
    .carousel-dots { bottom: 11px; }

    .quick-grid,
    .card-grid,
    .card-grid.two,
    .card-grid.four,
    .review-grid,
    .process-grid,
    .metric-strip,
    .fact-list,
    .footer-grid {
        grid-template-columns: 1fr;
    }

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

    .page-hero,
    .section {
        padding-top: 58px;
        padding-bottom: 58px;
    }

    .intro-panel,
    .compliance-box {
        padding: 24px;
        border-radius: 20px;
    }

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

    .footer-bottom .container {
        flex-direction: column;
    }
}

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