* {
    box-sizing: border-box;
}

:root {
    --page-bg: #E6EBF2;
    --nav-bg: #F5F7FB;
    --white: #FFFFFF;
    --soft: #EEF2F7;
    --soft-deep: #DDE4EE;
    --blue: #289CFF;
    --blue-deep: #1E90F0;
    --nav-text: #4E5F7A;
    --text: #243447;
    --muted: #66788A;
    --hint: #8A9AAF;
    --footer: #243447;
    --footer-text: #EAF3FF;
    --line: rgba(40, 156, 255, 0.16);
    --shadow: 0 14px 36px rgba(56, 92, 138, 0.12);
    --radius-lg: 24px;
    --radius-md: 18px;
    --radius-sm: 12px;
}

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

body {
    margin: 0;
    background: var(--page-bg);
    color: var(--text);
    font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.75;
    overflow-x: hidden;
}

body.drawer-open {
    overflow: hidden;
}

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

img {
    max-width: 100%;
}

button,
a {
    -webkit-tap-highlight-color: transparent;
}

button {
    font: inherit;
}

.page-width,
.section-shell {
    width: min(1200px, calc(100% - 40px));
    margin-left: auto;
    margin-right: 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 {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    min-height: 72px;
}

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

.logo img {
    display: block;
    width: auto;
    max-width: 156px;
    max-height: 52px;
}

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

.nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    white-space: nowrap;
    flex-wrap: nowrap;
}

.nav > a,
.dropdown-trigger {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    min-height: 72px;
    padding: 0 2px;
    border: 0;
    background: transparent;
    color: var(--nav-text);
    cursor: pointer;
    font-weight: 600;
    transition: color 0.2s ease;
}

.nav > a::after,
.dropdown::after,
.more-dropdown::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 10px;
    width: 0;
    height: 3px;
    border-radius: 999px;
    background: var(--blue);
    transform: translateX(-50%);
    transition: width 0.2s ease;
}

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

.nav > a:hover::after,
.nav > a.active::after,
.dropdown.active::after,
.more-dropdown.active::after {
    width: 24px;
}

.dropdown,
.more-dropdown {
    position: relative;
    display: inline-flex;
    align-items: center;
    min-height: 72px;
}

.dropdown-menu,
.more-menu {
    position: absolute;
    top: calc(100% - 6px);
    left: 50%;
    z-index: 10000;
    min-width: 190px;
    padding: 10px;
    border: 1px solid rgba(40, 156, 255, 0.12);
    border-radius: 14px;
    background: var(--white);
    box-shadow: 0 18px 38px rgba(56, 92, 138, 0.16);
    opacity: 0;
    visibility: hidden;
    transform: translate(-50%, 10px);
    transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s ease;
}

.more-menu {
    left: auto;
    right: 0;
    transform: translateY(10px);
}

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

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

.dropdown-menu a,
.more-menu a {
    display: block;
    padding: 10px 13px;
    border-radius: 10px;
    color: var(--nav-text);
    white-space: nowrap;
    transition: color 0.18s ease, background 0.18s ease;
}

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

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

.main-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 24px;
    border: 0;
    border-radius: 999px;
    background: linear-gradient(180deg, #32D1F6 0%, #27B9F4 35%, #249BFF 100%);
    box-shadow: 0 10px 24px rgba(36, 155, 255, 0.25);
    color: #FFFFFF;
    font-weight: 700;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.main-btn:hover {
    background: linear-gradient(180deg, #48D9F7 0%, #1E90F0 100%);
    box-shadow: 0 14px 28px rgba(36, 155, 255, 0.30);
    transform: translateY(-1px);
}

.header-register {
    min-width: 88px;
}

.menu-toggle {
    display: none;
    width: 42px;
    height: 42px;
    padding: 9px;
    border: 0;
    border-radius: 12px;
    background: rgba(40, 156, 255, 0.09);
    cursor: pointer;
}

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

.mobile-drawer {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 12000;
    width: min(84vw, 320px);
    height: 100dvh;
    padding: 18px;
    background: var(--white);
    box-shadow: 18px 0 42px rgba(36, 52, 71, 0.18);
    overflow-y: auto;
    transform: translateX(-105%);
    transition: transform 0.25s ease;
}

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

.drawer-overlay {
    position: fixed;
    inset: 0;
    z-index: 11000;
    background: rgba(36, 52, 71, 0.52);
    opacity: 0;
    transition: opacity 0.22s ease;
}

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

.drawer-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(40, 156, 255, 0.12);
}

.drawer-logo img {
    width: auto;
    max-width: 138px;
    max-height: 48px;
}

.drawer-close {
    width: 40px;
    height: 40px;
    border: 0;
    border-radius: 12px;
    background: var(--soft);
    color: var(--text);
    cursor: pointer;
    font-size: 28px;
    line-height: 1;
}

.drawer-nav {
    display: grid;
    gap: 6px;
    padding: 16px 0 24px;
}

.drawer-nav a {
    display: flex;
    align-items: center;
    min-height: 44px;
    padding: 8px 12px;
    border-radius: 12px;
    color: var(--nav-text);
    font-weight: 600;
}

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

.site-main {
    min-height: 60vh;
    padding-bottom: 72px;
}

.banner-slider {
    position: relative;
    max-width: 1200px;
    width: calc(100% - 40px);
    margin: 28px auto 36px;
    border: 1px solid rgba(40, 156, 255, 0.12);
    border-radius: 20px;
    background: var(--white);
    box-shadow: 0 18px 40px rgba(56, 92, 138, 0.12);
    overflow: hidden;
}

.banner-slide {
    display: none;
    width: 100%;
}

.banner-slide.active {
    display: block;
}

.banner-slide img {
    display: block;
    width: 100%;
    height: auto;
    background: var(--white);
}

.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: 4;
    width: 44px;
    height: 44px;
    border: 1px solid rgba(255, 255, 255, 0.55);
    border-radius: 50%;
    background: rgba(36, 52, 71, 0.42);
    color: #FFFFFF;
    cursor: pointer;
    font-size: 30px;
    line-height: 1;
    transform: translateY(-50%);
    transition: background 0.2s ease, transform 0.2s ease;
}

.slider-arrow:hover {
    background: rgba(36, 52, 71, 0.72);
    transform: translateY(-50%) scale(1.04);
}

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

.slider-dots {
    position: absolute;
    left: 50%;
    bottom: 16px;
    z-index: 4;
    display: flex;
    gap: 9px;
    transform: translateX(-50%);
}

.slider-dot {
    width: 9px;
    height: 9px;
    padding: 0;
    border: 1px solid rgba(255, 255, 255, 0.95);
    border-radius: 50%;
    background: rgba(36, 52, 71, 0.38);
    cursor: pointer;
}

.slider-dot.active {
    width: 26px;
    border-radius: 999px;
    background: #FFFFFF;
}

.home-welcome,
.subhero,
.content-section,
.split-panel,
.legal-panel {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(300px, 0.95fr);
    align-items: center;
    gap: 42px;
}

.home-welcome,
.subhero {
    margin-top: 36px;
    margin-bottom: 32px;
    padding: 46px;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.92);
    box-shadow: var(--shadow);
}

.subhero {
    margin-top: 34px;
}

.home-welcome h1,
.subhero h1 {
    margin: 12px 0 18px;
    color: var(--blue);
    font-size: clamp(34px, 5vw, 58px);
    line-height: 1.16;
    letter-spacing: -0.04em;
}

.home-welcome p,
.subhero p,
.content-copy p,
.section-heading p,
.info-card p,
.review-card p,
.legal-panel p,
.step-list p {
    color: var(--muted);
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--blue);
    font-size: 14px;
    font-weight: 800;
    letter-spacing: 0.12em;
}

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

.hero-links {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 18px;
    margin-top: 26px;
}

.text-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--blue);
    font-weight: 700;
}

.text-link:hover {
    color: var(--blue-deep);
}

.home-media,
.subhero-media,
.content-media {
    margin: 0;
    min-width: 0;
}

.home-media img,
.subhero-media img,
.content-media img,
.app-media img,
.product-media img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    background: var(--white);
    box-shadow: 0 12px 30px rgba(56, 92, 138, 0.12);
    object-fit: contain;
}

.highlight-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 24px 0 0;
    padding: 0;
    list-style: none;
}

.highlight-list li {
    padding: 7px 12px;
    border: 1px solid rgba(40, 156, 255, 0.15);
    border-radius: 999px;
    background: rgba(40, 156, 255, 0.07);
    color: var(--nav-text);
    font-size: 14px;
    font-weight: 700;
}

.section-block {
    margin-top: 72px;
}

.section-heading {
    max-width: 760px;
    margin-bottom: 28px;
}

.section-heading.compact {
    margin-bottom: 18px;
}

.section-heading h2,
.content-copy h2,
.legal-panel h2 {
    margin: 10px 0 12px;
    color: var(--blue);
    font-size: clamp(27px, 4vw, 40px);
    line-height: 1.25;
}

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

.entry-card,
.info-card,
.review-card,
.product-card,
.trust-card,
.faq-summary-card,
.zone-card {
    position: relative;
    min-width: 0;
    margin: 0;
    padding: 24px;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.92);
    box-shadow: 0 14px 36px rgba(56, 92, 138, 0.10);
}

.entry-card h3,
.info-card h3,
.product-card h3,
.trust-card h3,
.faq-summary-card h3,
.zone-card h3,
.step-list h3 {
    margin: 8px 0 10px;
    color: var(--text);
    font-size: 20px;
    line-height: 1.35;
}

.entry-card p,
.product-card p,
.trust-card p,
.faq-summary-card p,
.zone-card p {
    margin: 0 0 18px;
    color: var(--muted);
}

.card-tag,
.section-index {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 34px;
    min-height: 28px;
    padding: 0 10px;
    border-radius: 999px;
    background: rgba(40, 156, 255, 0.09);
    color: var(--blue);
    font-size: 13px;
    font-weight: 800;
}

.content-section {
    margin-top: 56px;
    padding: 36px;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.78);
}

.content-section.reverse .content-copy {
    order: 2;
}

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

.check-list {
    display: grid;
    gap: 10px;
    margin: 22px 0 0;
    padding: 0;
    list-style: none;
}

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

.check-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    top: 0;
    color: var(--blue);
    font-weight: 900;
}

.soft-panel {
    padding: 36px;
    border: 1px solid rgba(40, 156, 255, 0.12);
    border-radius: var(--radius-lg);
    background: var(--soft);
}

.step-list {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.step-list li {
    display: flex;
    gap: 14px;
    min-width: 0;
    padding: 22px;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.88);
}

.step-list > li > span {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: linear-gradient(180deg, #32D1F6 0%, #249BFF 100%);
    color: #FFFFFF;
    font-weight: 800;
}

.step-list h3,
.step-list p {
    margin-top: 0;
}

.review-card p {
    margin: 0;
    font-size: 16px;
}

.review-card footer {
    margin-top: 18px;
    color: var(--blue);
    font-size: 14px;
    font-weight: 800;
}

.legal-panel {
    margin-top: 72px;
    padding: 34px 38px;
    border: 1px solid rgba(40, 156, 255, 0.18);
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, rgba(255,255,255,0.96), rgba(238,242,247,0.92));
}

.legal-panel h2 {
    margin-bottom: 0;
    font-size: clamp(24px, 3vw, 34px);
}

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

.faq-item {
    border: 1px solid var(--line);
    border-radius: 16px;
    background: rgba(255,255,255,0.92);
    box-shadow: 0 10px 24px rgba(56,92,138,0.07);
    overflow: hidden;
}

.faq-item summary {
    position: relative;
    padding: 20px 54px 20px 22px;
    color: var(--text);
    cursor: pointer;
    font-weight: 800;
    list-style: none;
}

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

.faq-item summary::after {
    content: "+";
    position: absolute;
    right: 22px;
    top: 50%;
    color: var(--blue);
    font-size: 26px;
    transform: translateY(-50%);
}

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

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

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

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

.product-card img {
    display: block;
    width: 100%;
    height: auto;
    background: #FFFFFF;
}

.product-card-body {
    padding: 22px;
}

.app-feature {
    display: grid;
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    align-items: center;
    gap: 36px;
    margin-top: 72px;
    padding: 38px;
    border-radius: var(--radius-lg);
    background: var(--soft-deep);
}

.app-feature-points {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin-top: 20px;
}

.app-feature-points div {
    padding: 14px;
    border-radius: 14px;
    background: rgba(255,255,255,0.75);
    color: var(--nav-text);
    font-weight: 700;
}

.notice-columns {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 18px;
}

.notice-card {
    padding: 28px;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: rgba(255,255,255,0.92);
}

.notice-card h3 {
    color: var(--blue);
}

.site-footer {
    padding: 60px 0 22px;
    background: var(--footer);
    color: var(--footer-text);
}

.footer-inner {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.9fr);
    gap: 70px;
}

.footer-logo img {
    width: auto;
    max-width: 160px;
    max-height: 52px;
    filter: drop-shadow(0 6px 12px rgba(0,0,0,0.18));
}

.footer-brand p {
    max-width: 470px;
    margin: 20px 0 0;
    color: rgba(234, 243, 255, 0.76);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 26px;
}

.footer-links h3 {
    margin: 0 0 14px;
    color: #FFFFFF;
    font-size: 17px;
}

.footer-links a {
    display: block;
    margin: 8px 0;
    color: rgba(234, 243, 255, 0.75);
}

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

.footer-notice {
    display: flex;
    justify-content: space-between;
    gap: 30px;
    margin-top: 38px;
    padding-top: 22px;
    border-top: 1px solid rgba(234, 243, 255, 0.12);
    color: rgba(234, 243, 255, 0.62);
    font-size: 13px;
}

.footer-notice p {
    margin: 0;
}

@media (max-width: 1180px) {
    .nav {
        gap: 12px;
        font-size: 15px;
    }

    .wide-only {
        display: none !important;
    }

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

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

@media (max-width: 920px) {
    .page-width,
    .section-shell,
    .banner-slider {
        width: min(100% - 28px, 760px);
    }

    .header-inner {
        min-height: 64px;
        gap: 12px;
    }

    .nav-wrap {
        display: none;
    }

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

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

    .logo img {
        max-width: 128px;
        max-height: 44px;
    }

    .header-action {
        margin-left: auto;
    }

    .header-register {
        min-width: 76px;
        min-height: 40px;
        padding: 0 18px;
    }

    .home-welcome,
    .subhero,
    .content-section,
    .app-feature,
    .legal-panel,
    .notice-columns {
        grid-template-columns: 1fr;
    }

    .content-section.reverse .content-copy,
    .content-section.reverse .content-media {
        order: initial;
    }

    .home-welcome,
    .subhero {
        padding: 30px;
    }

    .content-section,
    .app-feature,
    .soft-panel,
    .legal-panel {
        padding: 28px;
    }

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

    .footer-inner {
        grid-template-columns: 1fr;
        gap: 36px;
    }
}

@media (max-width: 640px) {
    body {
        font-size: 15px;
    }

    .page-width,
    .section-shell,
    .banner-slider {
        width: calc(100% - 20px);
    }

    .header-inner {
        width: calc(100% - 16px);
    }

    .logo img {
        max-width: 108px;
        max-height: 38px;
    }

    .header-register {
        min-width: 66px;
        min-height: 38px;
        padding: 0 14px;
        font-size: 14px;
    }

    .banner-slider {
        margin-top: 18px;
        margin-bottom: 24px;
        border-radius: 14px;
    }

    .slider-arrow {
        width: 38px;
        height: 38px;
        font-size: 24px;
    }

    .slider-prev { left: 10px; }
    .slider-next { right: 10px; }
    .slider-dots { bottom: 10px; }

    .home-welcome,
    .subhero {
        margin-top: 22px;
        padding: 24px;
        border-radius: 18px;
    }

    .home-welcome h1,
    .subhero h1 {
        font-size: 34px;
    }

    .section-block {
        margin-top: 52px;
    }

    .entry-grid,
    .card-grid,
    .review-grid,
    .product-grid,
    .trust-grid,
    .faq-summary-grid,
    .step-list,
    .app-feature-points,
    .footer-links {
        grid-template-columns: 1fr;
    }

    .content-section,
    .app-feature,
    .soft-panel,
    .legal-panel {
        padding: 22px;
        border-radius: 18px;
    }

    .section-heading h2,
    .content-copy h2,
    .legal-panel h2 {
        font-size: 28px;
    }

    .entry-card,
    .info-card,
    .review-card,
    .product-card,
    .trust-card,
    .faq-summary-card,
    .zone-card {
        padding: 20px;
    }

    .product-card {
        padding: 0;
    }

    .footer-notice {
        flex-direction: column;
    }
}