* {
    box-sizing: border-box;
}

:root {
    --page: #E6EBF2;
    --soft: #F5F7FB;
    --white: #FFFFFF;
    --muted-bg: #EEF2F7;
    --line: #DDE4EE;
    --primary: #289CFF;
    --primary-deep: #249BFF;
    --text: #243447;
    --muted: #66788A;
    --footer: #243447;
    --shadow: 0 14px 36px rgba(56, 92, 138, 0.10);
    --gradient: linear-gradient(180deg, #32D1F6 0%, #27B9F4 35%, #249BFF 100%);
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--page);
    color: var(--text);
    font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    line-height: 1.75;
    padding-top: 92px;
    overflow-x: hidden;
}

body.drawer-open {
    overflow: hidden;
}

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

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

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

button {
    font: inherit;
}

.site-header {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 500;
    background: rgba(245, 247, 251, 0.94);
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 24px rgba(56, 92, 138, 0.10);
}

.header-inner {
    width: min(1460px, calc(100% - 40px));
    min-height: 76px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

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

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

.nav-core {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    white-space: nowrap;
    flex-wrap: nowrap;
}

.nav-core a {
    color: #4E5F7A;
    position: relative;
    font-weight: 700;
    padding: 10px 8px;
    border-radius: 10px;
    transition: 0.2s ease;
}

.nav-core a:hover,
.nav-core a.active {
    color: var(--primary);
    background: rgba(40, 156, 255, 0.07);
}

.nav-core a.active::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: -4px;
    width: 28px;
    height: 3px;
    border-radius: 999px;
    background: var(--primary);
    transform: translateX(-50%);
}

.main-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 24px;
    background: var(--gradient);
    color: #FFFFFF;
    border-radius: 999px;
    border: 0;
    box-shadow: 0 10px 22px rgba(40, 156, 255, 0.24);
    font-weight: 800;
    white-space: nowrap;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.main-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 28px rgba(40, 156, 255, 0.30);
}

.header-register {
    flex: 0 0 auto;
}

.mobile-header {
    display: none;
}

.site-main {
    width: 100%;
}

.layout-shell {
    width: min(1460px, calc(100% - 40px));
    margin: 26px auto 56px;
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 26px;
    align-items: start;
}

.content-column {
    min-width: 0;
}

.side-channel {
    position: sticky;
    top: 108px;
    max-height: calc(100vh - 128px);
    overflow-y: auto;
    padding: 16px;
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(40, 156, 255, 0.14);
    border-radius: 18px;
    box-shadow: 0 14px 32px rgba(56, 92, 138, 0.10);
}

.side-channel-title {
    padding: 4px 10px 12px;
    color: var(--text);
    font-size: 15px;
    font-weight: 800;
}

.side-channel nav {
    display: grid;
    gap: 5px;
}

.side-channel a {
    color: var(--muted);
    border-radius: 12px;
    padding: 8px 10px;
    font-size: 14px;
    transition: 0.2s ease;
}

.side-channel a:hover,
.side-channel a.active {
    color: var(--primary);
    background: rgba(40, 156, 255, 0.10);
    font-weight: 700;
}

.floating-service {
    position: fixed;
    right: 18px;
    top: 42%;
    z-index: 60;
    display: grid;
    gap: 8px;
    width: 64px;
}

.floating-service a,
.floating-service button {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 8px 6px;
    background: #FFFFFF;
    color: var(--primary);
    border: 1px solid rgba(40, 156, 255, 0.16);
    border-radius: 13px;
    box-shadow: 0 14px 30px rgba(56, 92, 138, 0.12);
    font-size: 13px;
    font-weight: 800;
    cursor: pointer;
}

.floating-service .register-link {
    background: var(--gradient);
    color: #FFFFFF;
}

.mobile-drawer,
.drawer-overlay,
.mobile-bottom-nav {
    display: none;
}

.banner-slider {
    width: 100%;
    height: clamp(300px, 31vw, 400px);
    margin: 0 auto 30px;
    border-radius: 24px;
    background: #FFFFFF;
    box-shadow: 0 18px 40px rgba(56, 92, 138, 0.12);
    overflow: hidden;
    position: relative;
    z-index: 1;
}

.banner-slider .slides,
.banner-slider .slide {
    width: 100%;
    height: 100%;
}

.banner-slider .slide {
    display: none;
    margin: 0;
}

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

.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: 0;
    border-radius: 999px;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.88);
    color: var(--primary);
    box-shadow: 0 8px 20px rgba(56, 92, 138, 0.16);
    font-size: 28px;
    line-height: 1;
    cursor: pointer;
}

.slider-arrow:hover {
    background: #FFFFFF;
}

.slider-arrow.prev {
    left: 16px;
}

.slider-arrow.next {
    right: 16px;
}

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

.slider-dots button {
    width: 9px;
    height: 9px;
    padding: 0;
    border-radius: 50%;
    border: 0;
    background: rgba(40, 156, 255, 0.24);
    cursor: pointer;
}

.slider-dots button.active {
    background: var(--primary);
    box-shadow: 0 0 0 4px rgba(40, 156, 255, 0.16);
}

.page-hero,
.section-block,
.card,
.zone-card,
.info-card,
.review-card,
.quick-link,
.notice-card,
.faq-item,
.media-panel {
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(40, 156, 255, 0.16);
    box-shadow: var(--shadow);
}

.page-hero {
    padding: clamp(28px, 4vw, 54px);
    border-radius: 24px;
    margin-bottom: 28px;
    position: relative;
    overflow: hidden;
}

.page-hero::after {
    content: "";
    position: absolute;
    width: 260px;
    height: 260px;
    right: -110px;
    top: -120px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(50, 209, 246, 0.24), rgba(40, 156, 255, 0));
    pointer-events: none;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    padding: 0 13px;
    border-radius: 999px;
    background: rgba(40, 156, 255, 0.10);
    color: var(--primary);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.04em;
}

h1,
h2,
h3,
.section-title {
    color: var(--primary);
    line-height: 1.35;
}

h1 {
    margin: 16px 0 14px;
    font-size: clamp(30px, 4.5vw, 52px);
}

h2 {
    margin-top: 0;
    font-size: clamp(23px, 3vw, 34px);
}

h3 {
    margin-top: 0;
    font-size: 19px;
}

p {
    margin-top: 0;
    color: var(--muted);
}

.lead {
    max-width: 860px;
    font-size: 17px;
    color: #50657B;
}

.hero-actions,
.card-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 22px;
}

.text-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary);
    font-weight: 800;
}

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

.section-block {
    border-radius: 22px;
    padding: clamp(24px, 3vw, 38px);
    margin-bottom: 26px;
}

.section-head {
    display: flex;
    justify-content: space-between;
    align-items: end;
    gap: 20px;
    margin-bottom: 22px;
}

.section-head p {
    max-width: 680px;
    margin-bottom: 0;
}

.intro-media,
.split-media {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
    gap: 28px;
    align-items: center;
}

.intro-media.reverse,
.split-media.reverse {
    grid-template-columns: minmax(280px, 0.85fr) minmax(0, 1.15fr);
}

.intro-media.reverse .media-frame,
.split-media.reverse .media-frame {
    order: -1;
}

.media-frame {
    min-height: 230px;
    padding: 14px;
    border-radius: 20px;
    background: linear-gradient(145deg, #F8FBFF, #EAF3FB);
    border: 1px solid rgba(40, 156, 255, 0.14);
    display: flex;
    align-items: center;
    justify-content: center;
}

.media-frame img {
    width: 100%;
    height: clamp(220px, 25vw, 300px);
    object-fit: contain;
}

.card-grid,
.three-grid,
.two-grid,
.four-grid,
.quick-grid,
.review-grid,
.product-grid {
    display: grid;
    gap: 18px;
}

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

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

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

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

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

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

.card,
.zone-card,
.info-card,
.review-card,
.notice-card,
.media-panel {
    border-radius: 18px;
    padding: 22px;
}

.card p:last-child,
.zone-card p:last-child,
.info-card p:last-child,
.review-card p:last-child,
.notice-card p:last-child {
    margin-bottom: 0;
}

.card:hover,
.quick-link:hover,
.zone-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 18px 42px rgba(56, 92, 138, 0.15);
}

.card,
.quick-link,
.zone-card {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.quick-link {
    min-height: 126px;
    padding: 18px;
    border-radius: 17px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.quick-link strong {
    color: var(--text);
    font-size: 16px;
}

.quick-link span {
    color: var(--muted);
    font-size: 13px;
    line-height: 1.6;
}

.quick-link em {
    color: var(--primary);
    font-style: normal;
    font-size: 13px;
    font-weight: 800;
}

.zone-card img,
.product-image {
    width: 100%;
    height: 170px;
    object-fit: contain;
    background: #F8FBFF;
    border-radius: 14px;
    margin-bottom: 18px;
}

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

.product-strip .zone-card img {
    height: 150px;
}

.pill-list,
.feature-list,
.steps-list {
    margin: 0;
    padding: 0;
    list-style: none;
}

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

.pill-list li {
    padding: 8px 13px;
    border-radius: 999px;
    background: var(--muted-bg);
    color: #50657B;
    font-size: 13px;
    font-weight: 700;
}

.feature-list,
.steps-list {
    display: grid;
    gap: 12px;
}

.feature-list li,
.steps-list li {
    position: relative;
    padding: 13px 15px 13px 42px;
    background: #F7FAFD;
    border-radius: 14px;
    color: var(--muted);
}

.feature-list li::before,
.steps-list li::before {
    position: absolute;
    left: 14px;
    top: 12px;
    width: 21px;
    height: 21px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: rgba(40, 156, 255, 0.12);
    color: var(--primary);
    font-size: 12px;
    font-weight: 900;
}

.feature-list li::before {
    content: "✓";
}

.steps-list {
    counter-reset: step;
}

.steps-list li {
    counter-increment: step;
}

.steps-list li::before {
    content: counter(step);
}

.review-card {
    position: relative;
    padding-top: 30px;
}

.review-card::before {
    content: "“";
    position: absolute;
    left: 18px;
    top: 3px;
    color: rgba(40, 156, 255, 0.25);
    font-size: 44px;
    line-height: 1;
    font-weight: 900;
}

.review-card strong {
    display: block;
    margin-top: 14px;
    color: var(--text);
    font-size: 13px;
}

.faq-list {
    display: grid;
    gap: 12px;
}

.faq-item {
    border-radius: 16px;
    overflow: hidden;
}

.faq-item summary {
    cursor: pointer;
    padding: 17px 20px;
    color: var(--text);
    font-weight: 800;
    list-style: none;
}

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

.faq-item summary::after {
    content: "+";
    float: right;
    color: var(--primary);
    font-size: 22px;
}

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

.faq-item p {
    padding: 0 20px 18px;
    margin: 0;
}

.notice-card {
    background: linear-gradient(145deg, rgba(255,255,255,0.96), rgba(238,244,250,0.96));
}

.notice-card strong {
    color: var(--text);
}

.tag-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
}

.tag-row span {
    border: 1px solid rgba(40, 156, 255, 0.16);
    background: rgba(40, 156, 255, 0.06);
    color: var(--primary);
    border-radius: 999px;
    padding: 6px 10px;
    font-size: 12px;
    font-weight: 700;
}

.compliance-strip {
    background: #DCE7F1;
    border-top: 1px solid rgba(36, 52, 71, 0.08);
}

.compliance-inner {
    width: min(1200px, calc(100% - 40px));
    margin: 0 auto;
    padding: 20px 0;
    display: grid;
    gap: 4px;
    text-align: center;
    color: #4F6378;
    font-size: 14px;
}

.compliance-inner strong {
    color: var(--text);
}

.site-footer {
    background: var(--footer);
    color: #EAF3FF;
}

.footer-grid {
    width: min(1200px, calc(100% - 40px));
    margin: 0 auto;
    padding: 52px 0 34px;
    display: grid;
    grid-template-columns: 1.6fr repeat(3, 1fr);
    gap: 30px;
}

.footer-logo img {
    max-height: 48px;
    filter: brightness(0) invert(1);
}

.footer-brand p {
    max-width: 420px;
    margin-top: 18px;
    color: #BFD0E2;
}

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

.site-footer a:not(.logo) {
    display: block;
    width: fit-content;
    margin: 8px 0;
    color: #C7D7E8;
    font-size: 14px;
}

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

.footer-bottom {
    width: min(1200px, calc(100% - 40px));
    margin: 0 auto;
    padding: 18px 0 24px;
    border-top: 1px solid rgba(234, 243, 255, 0.12);
    display: flex;
    justify-content: space-between;
    gap: 18px;
    color: #9EB4CA;
    font-size: 13px;
}

.footer-bottom a {
    margin: 0 !important;
}

@media (max-width: 1280px) {
    .floating-service {
        display: none;
    }
}

@media (max-width: 1180px) {
    .layout-shell {
        grid-template-columns: minmax(0, 1fr);
        width: min(1100px, calc(100% - 34px));
    }

    .side-channel {
        display: none;
    }

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

@media (max-width: 900px) {
    body {
        padding-top: 74px;
        padding-bottom: 78px;
    }

    .desktop-header {
        display: none;
    }

    .mobile-header {
        display: flex;
        min-height: 66px;
        width: calc(100% - 24px);
        gap: 12px;
    }

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

    .mobile-logo img {
        max-height: 42px;
        max-width: 128px;
    }

    .mobile-register {
        min-height: 38px;
        padding: 0 17px;
        font-size: 14px;
    }

    .menu-toggle {
        width: 42px;
        height: 42px;
        padding: 10px;
        display: grid;
        align-content: center;
        gap: 5px;
        border: 0;
        border-radius: 12px;
        background: #FFFFFF;
        box-shadow: 0 7px 18px rgba(56, 92, 138, 0.10);
        cursor: pointer;
    }

    .menu-toggle span {
        height: 2px;
        width: 100%;
        background: var(--text);
        border-radius: 999px;
    }

    .drawer-overlay {
        display: block;
        position: fixed;
        inset: 0;
        z-index: 9000;
        background: rgba(20, 35, 52, 0.38);
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.25s ease;
    }

    .mobile-drawer {
        display: block;
        position: fixed;
        inset: 0 auto 0 0;
        z-index: 10000;
        width: min(84vw, 320px);
        padding: 18px;
        background: #FFFFFF;
        box-shadow: 18px 0 45px rgba(31, 56, 84, 0.20);
        transform: translateX(-105%);
        transition: transform 0.28s ease;
        overflow-y: auto;
    }

    body.drawer-open .drawer-overlay {
        opacity: 1;
        pointer-events: auto;
    }

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

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

    .drawer-logo img {
        max-height: 44px;
        max-width: 140px;
    }

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

    .drawer-nav {
        display: grid;
        gap: 5px;
        padding: 16px 0;
    }

    .drawer-nav a {
        padding: 11px 13px;
        border-radius: 12px;
        color: var(--muted);
        font-weight: 700;
    }

    .drawer-nav a:hover,
    .drawer-nav a.active {
        color: var(--primary);
        background: rgba(40, 156, 255, 0.10);
    }

    .mobile-bottom-nav {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        position: fixed;
        left: 10px;
        right: 10px;
        bottom: max(8px, env(safe-area-inset-bottom));
        z-index: 800;
        min-height: 62px;
        padding: 6px;
        background: rgba(255, 255, 255, 0.96);
        border: 1px solid rgba(40, 156, 255, 0.14);
        border-radius: 18px;
        box-shadow: 0 12px 34px rgba(56, 92, 138, 0.18);
        backdrop-filter: blur(10px);
    }

    .mobile-bottom-nav a {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 2px;
        color: var(--muted);
        font-size: 12px;
        font-weight: 700;
        border-radius: 12px;
    }

    .mobile-bottom-nav a span {
        font-size: 17px;
        line-height: 1;
    }

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

    .layout-shell {
        width: calc(100% - 24px);
        margin-top: 16px;
    }

    .banner-slider {
        height: clamp(190px, 47vw, 280px);
        border-radius: 18px;
        margin-bottom: 20px;
    }

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

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

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

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

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

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

    .intro-media,
    .split-media,
    .intro-media.reverse,
    .split-media.reverse {
        grid-template-columns: 1fr;
    }

    .intro-media.reverse .media-frame,
    .split-media.reverse .media-frame {
        order: initial;
    }

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

@media (max-width: 620px) {
    .page-hero,
    .section-block {
        padding: 22px 18px;
        border-radius: 18px;
    }

    h1 {
        font-size: 31px;
    }

    .lead {
        font-size: 15px;
    }

    .section-head {
        display: block;
    }

    .three-grid,
    .two-grid,
    .four-grid,
    .review-grid,
    .product-grid,
    .product-strip {
        grid-template-columns: 1fr;
    }

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

    .quick-link {
        min-height: 118px;
        padding: 15px;
    }

    .media-frame {
        min-height: 190px;
    }

    .media-frame img {
        height: 210px;
    }

    .zone-card img,
    .product-strip .zone-card img,
    .product-image {
        height: 145px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        padding-top: 38px;
    }

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

@media (max-width: 420px) {
    .mobile-logo img {
        max-width: 108px;
    }

    .mobile-register {
        padding: 0 13px;
    }

    .banner-slider {
        height: 180px;
    }

    .slider-arrow {
        width: 34px;
        height: 34px;
    }
}