* {
    box-sizing: border-box;
}

:root {
    --bg: #F4FBFF;
    --surface: #FFFFFF;
    --surface-soft: #E8F7FF;
    --primary: #11AEEA;
    --primary-strong: #1688D8;
    --heading: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --border: rgba(17, 174, 234, 0.18);
    --footer: #073A68;
    --footer-text: #EAF8FF;
    --shadow: 0 18px 48px rgba(21, 90, 157, 0.12);
    --radius-xl: 28px;
    --radius-lg: 20px;
    --radius-md: 14px;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-width: 320px;
    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,
a {
    -webkit-tap-highlight-color: transparent;
}

.skip-link {
    position: fixed;
    top: 8px;
    left: 8px;
    z-index: 9999;
    transform: translateY(-160%);
    padding: 10px 14px;
    border-radius: 10px;
    background: var(--footer);
    color: #fff;
}

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

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(16px);
}

.header-inner {
    width: min(100% - 32px, 1360px);
    min-height: 76px;
    margin: 0 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(112px, 10vw, 148px);
    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(5px, 0.65vw, 12px);
    white-space: nowrap;
}

.desktop-nav a {
    position: relative;
    flex: 0 1 auto;
    padding: 9px clamp(4px, 0.45vw, 8px);
    border-radius: 10px;
    color: var(--text);
    font-size: clamp(12px, 0.82vw, 15px);
    font-weight: 700;
    transition: 0.2s ease;
}

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

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

.main-btn,
.secondary-btn {
    display: inline-flex;
    min-height: 44px;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: 999px;
    padding: 10px 22px;
    font-weight: 800;
    line-height: 1;
    transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}

.main-btn {
    background: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%);
    color: #fff;
    box-shadow: 0 10px 26px rgba(22, 136, 216, 0.25);
}

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

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

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

.menu-toggle span {
    display: block;
    width: 21px;
    height: 2px;
    margin: 4px auto;
    border-radius: 2px;
    background: var(--primary-strong);
}

.drawer-backdrop {
    position: fixed;
    inset: 0;
    z-index: 1090;
    background: rgba(7, 58, 104, 0.4);
}

.mobile-drawer {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 1100;
    width: min(86vw, 390px);
    height: 100dvh;
    padding: 22px;
    overflow-y: auto;
    transform: translateX(105%);
    background: #fff;
    box-shadow: -24px 0 60px rgba(7, 58, 104, 0.2);
    transition: transform 0.28s ease;
}

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

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

.drawer-head strong {
    color: var(--primary-strong);
    font-size: 26px;
}

.drawer-close {
    width: 42px;
    height: 42px;
    border: 0;
    border-radius: 12px;
    background: var(--surface-soft);
    color: var(--primary-strong);
    font-size: 28px;
    cursor: pointer;
}

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

.drawer-nav a {
    padding: 12px 14px;
    border-radius: 12px;
    color: var(--text);
    font-weight: 700;
}

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

.drawer-register {
    width: 100%;
}

main {
    display: block;
}

.container {
    width: min(100% - 32px, 1240px);
    margin: 0 auto;
}

.section {
    padding: clamp(56px, 7vw, 92px) 0;
}

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

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

.section-white {
    background: #fff;
}

.section-head {
    max-width: 780px;
    margin-bottom: 30px;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    color: var(--primary);
    font-weight: 800;
    letter-spacing: 0.08em;
}

.eyebrow::before {
    content: "";
    width: 26px;
    height: 3px;
    border-radius: 3px;
    background: linear-gradient(90deg, var(--primary), var(--primary-strong));
}

h1,
h2,
h3 {
    margin: 0 0 14px;
    color: var(--heading);
    line-height: 1.28;
}

h1 {
    font-size: clamp(34px, 5vw, 58px);
}

h2 {
    font-size: clamp(27px, 3.6vw, 42px);
}

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

p {
    margin: 0 0 16px;
}

.lead {
    color: var(--muted);
    font-size: clamp(17px, 1.8vw, 20px);
}

.hero-copy {
    padding: clamp(54px, 7vw, 90px) 0;
}

.hero-copy-inner {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
    gap: clamp(30px, 5vw, 72px);
    align-items: center;
}

.hero-copy .actions,
.actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 24px;
}

.hero-note {
    padding: 28px;
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    background: linear-gradient(145deg, #fff, #edfaff);
    box-shadow: var(--shadow);
}

.hero-note ul,
.clean-list {
    margin: 0;
    padding: 0;
    list-style: none;
}

.hero-note li,
.clean-list li {
    position: relative;
    padding: 9px 0 9px 28px;
    color: var(--text);
}

.hero-note li::before,
.clean-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    top: 9px;
    color: var(--primary-strong);
    font-weight: 900;
}

.carousel-wrap {
    padding: 22px 0 0;
}

.carousel {
    position: relative;
    width: min(100% - 32px, 1360px);
    aspect-ratio: 16 / 6.5;
    min-height: 250px;
    margin: 0 auto;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, #eaf9ff, #fff);
    box-shadow: var(--shadow);
}

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

.carousel-slide {
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.55s ease;
}

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

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

.carousel-arrow {
    position: absolute;
    top: 50%;
    z-index: 4;
    width: 48px;
    height: 48px;
    transform: translateY(-50%);
    border: 1px solid rgba(255, 255, 255, 0.75);
    border-radius: 50%;
    background: rgba(7, 58, 104, 0.55);
    color: #fff;
    font-size: 26px;
    cursor: pointer;
    backdrop-filter: blur(10px);
}

.carousel-arrow:hover {
    background: rgba(7, 58, 104, 0.75);
}

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

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

.carousel-dots {
    position: absolute;
    left: 50%;
    bottom: 16px;
    z-index: 4;
    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, 0.7);
    box-shadow: 0 0 0 1px rgba(7, 58, 104, 0.18);
    cursor: pointer;
}

.carousel-dot.is-active {
    width: 28px;
    border-radius: 99px;
    background: #fff;
}

.grid-2,
.grid-3,
.grid-4,
.grid-5 {
    display: grid;
    gap: 22px;
}

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

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

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

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

.card {
    height: 100%;
    padding: 26px;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--surface);
    box-shadow: 0 14px 34px rgba(21, 90, 157, 0.08);
}

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

.card-link {
    display: inline-flex;
    margin-top: 8px;
    color: var(--primary-strong);
    font-weight: 800;
}

.card-link::after {
    content: "→";
    margin-left: 6px;
}

.media-panel {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(320px, 0.92fr);
    gap: clamp(28px, 5vw, 62px);
    align-items: center;
}

.media-panel.reverse .media-copy {
    order: 2;
}

.media-panel.reverse .media-frame {
    order: 1;
}

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

.media-frame img {
    width: 100%;
    height: auto;
    max-height: 520px;
    object-fit: contain;
}

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 20px 0 0;
}

.tag {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: 7px 13px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--surface-soft);
    color: var(--primary-strong);
    font-size: 14px;
    font-weight: 700;
}

.notice {
    padding: 24px;
    border-left: 4px solid var(--primary);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    background: #fff;
    box-shadow: 0 10px 28px rgba(21, 90, 157, 0.08);
}

.notice strong {
    display: block;
    margin-bottom: 6px;
    color: var(--heading);
}

.review-card {
    position: relative;
    padding: 26px;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: #fff;
}

.review-card::before {
    content: "“";
    position: absolute;
    top: 8px;
    right: 18px;
    color: rgba(17, 174, 234, 0.18);
    font-family: Georgia, serif;
    font-size: 70px;
    line-height: 1;
}

.review-card p {
    position: relative;
    z-index: 1;
}

.review-card strong {
    color: var(--primary-strong);
}

.page-hero {
    padding: clamp(62px, 8vw, 105px) 0;
    background:
        radial-gradient(circle at 88% 10%, rgba(53, 215, 255, 0.24), transparent 30%),
        linear-gradient(135deg, #ffffff 0%, #e8f7ff 100%);
    border-bottom: 1px solid var(--border);
}

.page-hero-inner {
    max-width: 900px;
}

.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 18px;
    color: var(--muted);
    font-size: 14px;
}

.breadcrumb a {
    color: var(--primary-strong);
}

.steps {
    counter-reset: step;
    display: grid;
    gap: 16px;
}

.step {
    position: relative;
    padding: 22px 22px 22px 72px;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: #fff;
}

.step::before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    left: 20px;
    top: 20px;
    width: 34px;
    height: 34px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: linear-gradient(135deg, #35D7FF, #1688D8);
    color: #fff;
    font-weight: 900;
}

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

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

.faq-item button {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 20px 22px;
    border: 0;
    background: #fff;
    color: var(--heading);
    text-align: left;
    font-weight: 800;
    cursor: pointer;
}

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

.faq-item.is-open button::after {
    content: "−";
}

.faq-answer {
    display: none;
    padding: 0 22px 22px;
    color: var(--muted);
}

.faq-item.is-open .faq-answer {
    display: block;
}

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

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

th,
td {
    padding: 16px 18px;
    border-bottom: 1px solid var(--border);
    text-align: left;
    vertical-align: top;
}

th {
    background: var(--surface-soft);
    color: var(--heading);
}

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

.footer-inner {
    width: min(100% - 32px, 1240px);
    margin: 0 auto;
    padding: 58px 0 34px;
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.6fr);
    gap: 50px;
}

.footer-brand strong {
    display: block;
    margin-bottom: 14px;
    color: #fff;
    font-size: 34px;
}

.footer-brand p {
    max-width: 500px;
    color: rgba(234, 248, 255, 0.82);
}

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

.footer-links h2 {
    margin-bottom: 14px;
    color: #fff;
    font-size: 17px;
}

.footer-links a {
    display: block;
    padding: 4px 0;
    color: rgba(234, 248, 255, 0.82);
}

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

.footer-bottom {
    width: min(100% - 32px, 1240px);
    margin: 0 auto;
    padding: 22px 0 30px;
    border-top: 1px solid rgba(234, 248, 255, 0.14);
    color: rgba(234, 248, 255, 0.72);
    font-size: 14px;
}

.footer-bottom p {
    margin-bottom: 6px;
}

@media (max-width: 1180px) {
    .desktop-nav {
        display: none;
    }

    .header-inner {
        min-height: 70px;
    }

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

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

@media (max-width: 980px) {
    .grid-4,
    .grid-5 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .grid-3 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .hero-copy-inner,
    .media-panel {
        grid-template-columns: 1fr;
    }

    .media-panel.reverse .media-copy,
    .media-panel.reverse .media-frame {
        order: initial;
    }

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

@media (max-width: 720px) {
    .header-inner,
    .container,
    .footer-inner,
    .footer-bottom,
    .carousel {
        width: min(100% - 24px, 1240px);
    }

    .header-inner {
        gap: 10px;
    }

    .brand-logo img {
        width: 108px;
    }

    .header-actions .main-btn {
        min-height: 40px;
        padding: 9px 16px;
    }

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

    .carousel-wrap {
        padding-top: 12px;
    }

    .carousel {
        aspect-ratio: 16 / 9;
        min-height: 220px;
        border-radius: 18px;
    }

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

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

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

    .carousel-dots {
        bottom: 10px;
    }

    .grid-2,
    .grid-3,
    .grid-4,
    .grid-5 {
        grid-template-columns: 1fr;
    }

    .card,
    .review-card {
        padding: 22px;
    }

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

@media (max-width: 480px) {
    .carousel {
        min-height: 190px;
    }

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

    .actions {
        flex-direction: column;
    }

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

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}