* {
    box-sizing: border-box;
}

:root {
    --bg: #E6EBF2;
    --surface: #FFFFFF;
    --surface-soft: #F5F7FB;
    --surface-alt: #EEF2F7;
    --surface-deep: #DDE4EE;
    --primary: #289CFF;
    --nav: #4E5F7A;
    --text: #243447;
    --muted: #66788A;
    --hint: #8A9AAF;
    --border: rgba(40, 156, 255, 0.16);
    --shadow: 0 14px 36px rgba(56, 92, 138, 0.12);
    --header-height: 76px;
}

html {
    scroll-behavior: smooth;
    background: var(--bg);
}

body {
    margin: 0;
    min-width: 320px;
    background: var(--bg);
    color: var(--text);
    font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
    line-height: 1.75;
    overflow-x: hidden;
}

body.drawer-open {
    overflow: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    display: block;
    max-width: 100%;
}

button,
input,
textarea,
select {
    font: inherit;
}

button {
    color: inherit;
}

.container {
    width: min(1180px, calc(100% - 40px));
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 9999;
    background: rgba(245, 247, 251, 0.94);
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 24px rgba(56, 92, 138, 0.10);
}

.header-inner {
    min-height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.logo {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    min-width: 112px;
}

.logo img {
    max-height: 52px;
    width: auto;
}

.nav-wrap {
    flex: 1 1 auto;
    min-width: 0;
    display: flex;
    justify-content: center;
}

.nav {
    display: flex;
    align-items: center;
    gap: clamp(12px, 1.45vw, 22px);
    white-space: nowrap;
    flex-wrap: nowrap;
}

.nav > a,
.nav-trigger {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    min-height: 44px;
    padding: 0;
    border: 0;
    background: transparent;
    color: var(--nav);
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
}

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

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

.nav > a:hover::after,
.nav > a.active::after,
.nav-trigger:hover::after,
.nav-trigger.active::after {
    width: 100%;
}

.header-action {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
}

.main-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 88px;
    min-height: 44px;
    padding: 10px 24px;
    border: 0;
    border-radius: 999px;
    background: linear-gradient(180deg, #32D1F6 0%, #27B9F4 35%, #249BFF 100%);
    color: #FFFFFF;
    box-shadow: 0 10px 24px rgba(36, 155, 255, 0.25);
    font-weight: 700;
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

.main-btn:hover {
    background: linear-gradient(180deg, #48D9F7 0%, #1E90F0 100%);
    transform: translateY(-1px);
    box-shadow: 0 13px 28px rgba(36, 155, 255, 0.31);
}

.dropdown,
.more-dropdown {
    position: relative;
}

.dropdown-menu,
.more-menu {
    position: absolute;
    top: calc(100% + 6px);
    left: 50%;
    min-width: 190px;
    padding: 8px;
    border: 1px solid rgba(40, 156, 255, 0.12);
    border-radius: 14px;
    background: #FFFFFF;
    box-shadow: 0 18px 38px rgba(56, 92, 138, 0.16);
    opacity: 0;
    visibility: hidden;
    transform: translate(-50%, 8px);
    transition: opacity .18s ease, transform .18s ease, visibility .18s ease;
    z-index: 10000;
}

.more-menu {
    left: auto;
    right: 0;
    transform: translateY(8px);
}

.dropdown:hover > .dropdown-menu,
.dropdown:focus-within > .dropdown-menu,
.dropdown.open > .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, 0);
}

.more-dropdown:hover > .more-menu,
.more-dropdown:focus-within > .more-menu,
.more-dropdown.open > .more-menu {
    transform: translateY(0);
}

.dropdown-menu a,
.more-menu a {
    display: block;
    padding: 10px 14px;
    border-radius: 9px;
    color: var(--nav);
    white-space: nowrap;
    font-size: 14px;
}

.dropdown-menu a:hover,
.dropdown-menu a.active,
.more-menu a:hover,
.more-menu a.active {
    color: var(--primary);
    background: rgba(40, 156, 255, 0.08);
}

.mobile-menu-btn {
    display: none;
    width: 42px;
    height: 42px;
    padding: 9px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: #FFFFFF;
    cursor: pointer;
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 2px;
    margin: 4px 0;
    border-radius: 2px;
    background: var(--nav);
}

.mobile-drawer {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 20001;
    width: min(84vw, 320px);
    padding: 18px;
    background: #FFFFFF;
    box-shadow: 20px 0 50px rgba(36, 52, 71, 0.20);
    transform: translateX(-104%);
    transition: transform .24s ease;
    overflow-y: auto;
}

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

.drawer-overlay {
    position: fixed;
    inset: 0;
    z-index: 20000;
    background: rgba(36, 52, 71, 0.46);
    opacity: 0;
    transition: opacity .22s ease;
}

.drawer-overlay.show {
    opacity: 1;
}

.drawer-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(78, 95, 122, 0.12);
}

.drawer-logo img {
    max-height: 44px;
    width: auto;
}

.drawer-close {
    width: 40px;
    height: 40px;
    border: 1px solid var(--border);
    border-radius: 50%;
    background: var(--surface-soft);
    color: var(--nav);
    font-size: 26px;
    line-height: 1;
    cursor: pointer;
}

.drawer-nav {
    display: grid;
    gap: 6px;
    padding: 16px 0 28px;
}

.drawer-nav a {
    padding: 11px 14px;
    border-radius: 10px;
    color: var(--nav);
    font-weight: 700;
}

.drawer-nav a:hover {
    color: var(--primary);
    background: rgba(40, 156, 255, 0.08);
}

.site-main {
    min-height: 60vh;
}

.section-space {
    padding: 36px 0;
}

.soft-section {
    background: rgba(238, 242, 247, 0.78);
}

.section-heading {
    max-width: 780px;
    margin: 0 auto 24px;
    text-align: center;
}

.section-heading h2 {
    margin: 0 0 10px;
    color: var(--primary);
    font-size: clamp(26px, 3.2vw, 40px);
    line-height: 1.25;
}

.section-heading p {
    margin: 0;
    color: var(--muted);
}

.banner-slider {
    position: relative;
    max-width: 1200px;
    aspect-ratio: 16 / 5.3;
    margin: 28px auto 18px;
    border-radius: 22px;
    background: #FFFFFF;
    box-shadow: 0 18px 40px rgba(56, 92, 138, 0.12);
    overflow: hidden;
}

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

.banner-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    pointer-events: none;
    transition: opacity .45s ease;
}

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

.banner-slide img,
.banner-slider img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: #FFFFFF;
}

.banner-caption,
.banner-text,
.slide-title,
.slide-desc,
.slide-content,
.slide-card,
.banner-card {
    display: none !important;
}

.slider-arrow {
    position: absolute;
    top: 50%;
    z-index: 3;
    width: 44px;
    height: 44px;
    border: 1px solid rgba(255, 255, 255, 0.68);
    border-radius: 50%;
    background: rgba(36, 52, 71, 0.40);
    color: #FFFFFF;
    font-size: 26px;
    cursor: pointer;
    transform: translateY(-50%);
    backdrop-filter: blur(6px);
}

.slider-arrow:hover {
    background: rgba(36, 52, 71, 0.64);
}

.slider-prev {
    left: 16px;
}

.slider-next {
    right: 16px;
}

.slider-dots {
    position: absolute;
    left: 50%;
    bottom: 14px;
    z-index: 3;
    display: flex;
    gap: 8px;
    transform: translateX(-50%);
}

.slider-dot {
    width: 10px;
    height: 10px;
    padding: 0;
    border: 1px solid rgba(255, 255, 255, 0.92);
    border-radius: 50%;
    background: rgba(36, 52, 71, 0.36);
    cursor: pointer;
}

.slider-dot.active {
    width: 26px;
    border-radius: 999px;
    background: var(--primary);
}

.welcome-section {
    padding: 28px 0 40px;
}

.welcome-card {
    display: grid;
    grid-template-columns: 1.05fr .95fr;
    gap: 34px;
    align-items: center;
    padding: clamp(24px, 4vw, 48px);
    border: 1px solid var(--border);
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.92);
    box-shadow: var(--shadow);
}

.welcome-copy h1,
.inner-hero h1 {
    margin: 0 0 18px;
    color: var(--primary);
    font-size: clamp(34px, 5vw, 58px);
    line-height: 1.15;
}

.welcome-copy p,
.inner-hero-copy .lead {
    margin: 0 0 22px;
    color: var(--muted);
    font-size: 17px;
}

.welcome-media,
.inner-hero-media,
.media-card {
    border-radius: 20px;
    background: #FFFFFF;
    overflow: hidden;
}

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

.eyebrow {
    margin: 0 0 10px !important;
    color: var(--primary) !important;
    font-weight: 800;
    letter-spacing: .08em;
}

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

.entry-card,
.info-card,
.review-card,
.product-card,
.prose-card,
.media-card,
.compliance-panel {
    border: 1px solid var(--border);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.92);
    box-shadow: 0 14px 36px rgba(56, 92, 138, 0.10);
}

.entry-card,
.info-card,
.product-card {
    padding: 24px;
}

.entry-card h3,
.info-card h3,
.product-card h3,
.step-item h3 {
    margin: 0 0 10px;
    color: var(--primary);
    font-size: 20px;
    line-height: 1.35;
}

.entry-card p,
.info-card p,
.product-card p {
    margin: 0 0 14px;
    color: var(--muted);
}

.card-index {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 28px;
    margin-bottom: 14px;
    border-radius: 999px;
    background: rgba(40, 156, 255, 0.10);
    color: var(--primary);
    font-weight: 800;
}

.text-link {
    color: var(--primary);
    font-weight: 800;
}

.split-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 28px;
    align-items: center;
}

.split-copy {
    padding: 10px 0;
}

.split-copy h2 {
    margin: 0 0 14px;
    color: var(--primary);
    font-size: clamp(28px, 3.2vw, 42px);
    line-height: 1.25;
}

.split-copy p {
    margin: 0 0 14px;
    color: var(--muted);
}

.feature-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
    margin-top: 20px;
}

.feature-item {
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.70);
}

.feature-item strong {
    display: block;
    margin-bottom: 4px;
    color: var(--primary);
}

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

.review-card {
    margin: 0;
    padding: 24px;
}

.review-card p {
    margin: 0 0 14px;
    color: var(--text);
}

.review-card footer {
    color: var(--hint);
    font-size: 14px;
}

.faq-list {
    display: grid;
    gap: 12px;
    max-width: 940px;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid var(--border);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.92);
    box-shadow: 0 10px 26px rgba(56, 92, 138, 0.08);
    overflow: hidden;
}

.faq-item summary {
    position: relative;
    padding: 18px 54px 18px 20px;
    color: var(--text);
    font-weight: 800;
    cursor: pointer;
    list-style: none;
}

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

.faq-item summary::after {
    content: "+";
    position: absolute;
    right: 20px;
    top: 50%;
    color: var(--primary);
    font-size: 24px;
    transform: translateY(-50%);
}

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

.faq-item p {
    margin: 0;
    padding: 0 20px 20px;
    color: var(--muted);
}

.inner-hero {
    padding-top: 42px;
}

.inner-hero-grid {
    display: grid;
    grid-template-columns: 1.04fr .96fr;
    align-items: center;
    gap: 34px;
    min-height: 390px;
    padding: clamp(26px, 4vw, 50px);
    border: 1px solid var(--border);
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.92);
    box-shadow: var(--shadow);
}

.inner-hero-grid:has(.inner-hero-copy:only-child) {
    grid-template-columns: 1fr;
    min-height: auto;
}

.prose-card {
    max-width: 980px;
    margin: 0 auto;
    padding: clamp(24px, 4vw, 42px);
}

.prose-card p {
    margin: 0 0 16px;
    color: var(--muted);
}

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

.step-list {
    display: grid;
    gap: 16px;
    max-width: 980px;
    margin: 0 auto;
}

.step-item {
    display: grid;
    grid-template-columns: 54px 1fr;
    gap: 18px;
    align-items: start;
    padding: 22px;
    border: 1px solid var(--border);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.92);
}

.step-item > span {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(40, 156, 255, 0.12);
    color: var(--primary);
    font-size: 20px;
    font-weight: 800;
}

.step-item p {
    margin: 0;
    color: var(--muted);
}

.compliance-panel {
    padding: clamp(24px, 4vw, 40px);
    background: linear-gradient(135deg, rgba(255,255,255,.96), rgba(238,242,247,.96));
}

.compliance-panel h2 {
    margin: 0 0 12px;
    color: var(--primary);
    font-size: clamp(24px, 3vw, 34px);
}

.compliance-panel p {
    margin: 0 0 12px;
    color: var(--muted);
}

.notice-list {
    display: grid;
    gap: 12px;
    padding: 0;
    list-style: none;
}

.notice-list li {
    position: relative;
    padding-left: 22px;
    color: var(--muted);
}

.notice-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: .75em;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--primary);
}

.site-footer {
    margin-top: 36px;
    background: #243447;
    color: #EAF3FF;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr repeat(3, 1fr);
    gap: 32px;
    padding: 54px 0 34px;
}

.footer-brand img {
    max-height: 50px;
    width: auto;
    margin-bottom: 18px;
}

.footer-brand p {
    max-width: 420px;
    margin: 0;
    color: rgba(234, 243, 255, 0.76);
}

.footer-links {
    display: grid;
    align-content: start;
    gap: 8px;
}

.footer-links h2 {
    margin: 0 0 8px;
    color: #FFFFFF;
    font-size: 17px;
}

.footer-links a {
    color: rgba(234, 243, 255, 0.76);
}

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

.compliance-note {
    padding: 24px 0;
    border-top: 1px solid rgba(234, 243, 255, 0.12);
}

.compliance-note p {
    margin: 0;
    color: rgba(234, 243, 255, 0.72);
    font-size: 14px;
}

.footer-bottom {
    border-top: 1px solid rgba(234, 243, 255, 0.12);
}

.footer-bottom p {
    margin: 0;
    padding: 18px 0;
    color: rgba(234, 243, 255, 0.62);
    font-size: 14px;
}

@media (max-width: 1080px) {
    .nav {
        gap: 12px;
    }

    .nav > a,
    .nav-trigger {
        font-size: 14px;
    }

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

@media (max-width: 900px) {
    :root {
        --header-height: 68px;
    }

    .header-inner {
        gap: 12px;
    }

    .mobile-menu-btn {
        display: block;
        flex: 0 0 auto;
    }

    .nav-wrap {
        display: none;
    }

    .logo {
        position: absolute;
        left: 50%;
        min-width: 0;
        transform: translateX(-50%);
    }

    .logo img {
        max-height: 46px;
        max-width: 120px;
    }

    .header-action .main-btn {
        min-width: 76px;
        min-height: 40px;
        padding: 8px 18px;
    }

    .welcome-card,
    .inner-hero-grid,
    .split-section {
        grid-template-columns: 1fr;
    }

    .inner-hero-grid {
        min-height: auto;
    }

    .welcome-media,
    .inner-hero-media {
        order: -1;
    }

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

@media (max-width: 640px) {
    .container {
        width: min(100% - 24px, 1180px);
    }

    .section-space {
        padding: 28px 0;
    }

    .banner-slider {
        width: calc(100% - 24px);
        aspect-ratio: 16 / 8.2;
        margin: 18px auto 12px;
        border-radius: 16px;
    }

    .slider-arrow {
        width: 38px;
        height: 38px;
        font-size: 22px;
    }

    .slider-prev {
        left: 10px;
    }

    .slider-next {
        right: 10px;
    }

    .slider-dots {
        bottom: 10px;
    }

    .welcome-card,
    .inner-hero-grid {
        gap: 22px;
        padding: 22px;
        border-radius: 18px;
    }

    .welcome-copy h1,
    .inner-hero h1 {
        font-size: clamp(30px, 10vw, 42px);
    }

    .entry-grid,
    .card-grid,
    .review-grid,
    .product-grid,
    .footer-grid,
    .feature-list {
        grid-template-columns: 1fr;
    }

    .entry-card,
    .info-card,
    .product-card,
    .review-card {
        padding: 20px;
    }

    .step-item {
        grid-template-columns: 44px 1fr;
        gap: 14px;
        padding: 18px;
    }

    .step-item > span {
        width: 40px;
        height: 40px;
        font-size: 17px;
    }

    .footer-grid {
        gap: 24px;
        padding-top: 42px;
    }
}

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