* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    background: #E6EBF2;
    color: #243447;
    line-height: 1.75;
}

a {
    color: #289CFF;
    text-decoration: none;
}

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

.site-header {
    position: sticky;
    top: 0;
    z-index: 9999;
    background: #F5F7FB;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 24px rgba(56,92,138,0.10);
}

.desktop-header {
    max-width: 1280px;
    margin: 0 auto;
    min-height: 78px;
    padding: 12px 22px;
    display: grid;
    grid-template-columns: 160px 1fr auto;
    align-items: center;
    gap: 18px;
}

.brand-logo img,
.mobile-logo img,
.drawer-logo img {
    width: 132px;
    height: auto;
    object-fit: contain;
}

.nav {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 4px 14px;
}

.nav a {
    position: relative;
    color: #4E5F7A;
    font-size: 14px;
    font-weight: 700;
    padding: 8px 0;
    white-space: nowrap;
}

.nav a::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 3px;
    height: 2px;
    border-radius: 99px;
    background: #289CFF;
    transform: scaleX(0);
    transition: transform .22s ease;
}

.nav a:hover,
.nav a.active {
    color: #289CFF;
}

.nav a:hover::after,
.nav a.active::after {
    transform: scaleX(1);
}

.main-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 10px 24px;
    border-radius: 999px;
    border: 0;
    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: 800;
    letter-spacing: .02em;
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

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

.header-btn {
    white-space: nowrap;
}

.mobile-header {
    display: none;
    min-height: 66px;
    padding: 10px 16px;
    align-items: center;
    justify-content: space-between;
}

.menu-toggle,
.drawer-close,
.slider-arrow {
    border: 0;
    cursor: pointer;
    font: inherit;
}

.menu-toggle {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    background: #FFFFFF;
    box-shadow: 0 8px 18px rgba(56,92,138,0.12);
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
}

.menu-toggle span {
    width: 20px;
    height: 2px;
    border-radius: 99px;
    background: #4E5F7A;
}

.mobile-register {
    min-height: 38px;
    padding: 8px 18px;
    font-size: 14px;
}

.drawer-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.42);
    opacity: 0;
    visibility: hidden;
    transition: opacity .28s ease, visibility .28s ease;
    z-index: 10000;
}

.mobile-drawer {
    position: fixed;
    top: 0;
    left: 0;
    width: min(84vw, 320px);
    height: 100vh;
    background: #FFFFFF;
    z-index: 10001;
    transform: translateX(-102%);
    transition: transform .3s ease;
    box-shadow: 16px 0 34px rgba(36,52,71,0.18);
    overflow-y: auto;
}

.drawer-open {
    overflow: hidden;
}

.drawer-open .drawer-overlay {
    opacity: 1;
    visibility: visible;
}

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

.drawer-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 18px 12px;
    border-bottom: 1px solid rgba(40,156,255,0.14);
    background: #F5F7FB;
}

.drawer-close {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    background: #FFFFFF;
    color: #4E5F7A;
    font-size: 24px;
    line-height: 1;
    box-shadow: 0 8px 18px rgba(56,92,138,0.10);
}

.drawer-nav {
    padding: 14px;
    display: grid;
    gap: 8px;
}

.drawer-nav a {
    color: #4E5F7A;
    font-weight: 800;
    padding: 13px 14px;
    border-radius: 14px;
    background: #F5F7FB;
    border: 1px solid rgba(40,156,255,0.10);
}

.drawer-nav a.active,
.drawer-nav a:hover {
    color: #289CFF;
    background: #EEF2F7;
    border-color: rgba(40,156,255,0.28);
}

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

.container,
.section,
.page-section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 22px;
}

.banner-slider {
    max-width: 1200px;
    height: clamp(210px, 42vw, 520px);
    margin: 28px auto 36px;
    border-radius: 20px;
    background: #FFFFFF;
    box-shadow: 0 18px 40px rgba(56,92,138,0.12);
    overflow: hidden;
    position: relative;
}

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

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

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

.slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 4;
    width: 44px;
    height: 44px;
    border-radius: 999px;
    background: rgba(255,255,255,.90);
    color: #289CFF;
    box-shadow: 0 10px 24px rgba(56,92,138,.14);
    font-size: 30px;
    line-height: 1;
}

.slider-prev {
    left: 18px;
}

.slider-next {
    right: 18px;
}

.slider-dots {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 16px;
    z-index: 5;
    display: flex;
    justify-content: center;
    gap: 9px;
}

.slider-dot {
    width: 10px;
    height: 10px;
    padding: 0;
    border: 0;
    border-radius: 999px;
    background: rgba(78,95,122,.35);
    cursor: pointer;
}

.slider-dot.active {
    width: 28px;
    background: #289CFF;
}

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

.section {
    margin-bottom: 34px;
}

.section-block,
.page-hero,
.card,
.zone-card,
.info-card,
.review-card,
.faq-item,
.notice-card,
.step-card,
.hero-panel,
.image-card,
.contact-card {
    background: rgba(255,255,255,0.92);
    border: 1px solid rgba(40,156,255,0.16);
    box-shadow: 0 14px 36px rgba(56,92,138,0.10);
    border-radius: 22px;
}

.section-block {
    padding: clamp(24px, 4vw, 42px);
}

.section-head {
    max-width: 760px;
    margin-bottom: 22px;
}

.eyebrow,
.tag,
.number {
    color: #289CFF;
    font-weight: 900;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    font-size: 14px;
    letter-spacing: .08em;
}

h1,
h2,
h3,
.section-title {
    color: #289CFF;
    line-height: 1.25;
    margin: 0 0 14px;
}

h1 {
    font-size: clamp(30px, 5vw, 52px);
    letter-spacing: -.03em;
}

h2 {
    font-size: clamp(24px, 3vw, 34px);
}

h3 {
    font-size: 20px;
}

p {
    margin: 0 0 14px;
}

.lead {
    font-size: 18px;
    color: #243447;
}

.muted {
    color: #66788A;
}

.small-note {
    color: #8A9AAF;
    font-size: 14px;
}

.grid {
    display: grid;
    gap: 20px;
}

.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));
}

.card,
.zone-card,
.info-card,
.review-card,
.faq-item,
.notice-card,
.step-card,
.contact-card {
    padding: 22px;
}

.card h3,
.zone-card h3,
.info-card h3,
.review-card h3,
.faq-item h3,
.notice-card h3,
.step-card h3,
.contact-card h3 {
    margin-bottom: 10px;
}

.text-link {
    display: inline-flex;
    margin-top: 8px;
    color: #289CFF;
    font-weight: 900;
}

.text-link::after {
    content: "›";
    margin-left: 6px;
}

.page-hero {
    max-width: 1200px;
    margin: 28px auto 34px;
    padding: clamp(24px, 4vw, 44px);
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(300px, .95fr);
    gap: 28px;
    align-items: center;
}

.hero-copy .main-btn {
    margin-top: 6px;
}

.hero-visual,
.image-card {
    background: #FFFFFF;
    overflow: hidden;
}

.hero-visual img,
.image-card img,
.content-img,
.zone-card img,
.app-section img {
    width: 100%;
    height: auto;
    object-fit: contain;
    background: #FFFFFF;
    border-radius: 18px;
}

.hero-visual img {
    max-height: 360px;
    margin: 0 auto;
}

.image-card {
    padding: 16px;
}

.page-section {
    margin-bottom: 32px;
}

.page-section .section-block + .section-block {
    margin-top: 20px;
}

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

.list li {
    position: relative;
    padding-left: 28px;
    color: #243447;
}

.list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: .72em;
    width: 10px;
    height: 10px;
    border-radius: 999px;
    background: #289CFF;
    box-shadow: 0 0 0 5px rgba(40,156,255,0.12);
}

.steps {
    counter-reset: step;
}

.step-card {
    position: relative;
}

.step-card::before {
    counter-increment: step;
    content: counter(step, decimal-leading-zero);
    display: inline-flex;
    color: #289CFF;
    font-weight: 900;
    margin-bottom: 8px;
}

.review-card {
    color: #243447;
}

.review-card strong {
    color: #289CFF;
    display: block;
    margin-bottom: 8px;
}

.faq-list {
    display: grid;
    gap: 16px;
}

.faq-item p {
    color: #66788A;
}

.notice-bar {
    max-width: 1200px;
    margin: 0 auto 38px;
    padding: 0 22px;
}

.notice-card {
    background: #DDE4EE;
}

.notice-card p {
    margin-bottom: 0;
}

.product-media {
    display: grid;
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
    gap: 24px;
    align-items: center;
}

.kpi-row {
    display: grid;
    grid-template-columns: repeat(4, minmax(0,1fr));
    gap: 16px;
    margin-top: 20px;
}

.kpi {
    background: #EEF2F7;
    border-radius: 18px;
    padding: 18px;
    border: 1px solid rgba(40,156,255,0.12);
}

.kpi strong {
    display: block;
    color: #289CFF;
    font-size: 26px;
}

.contact-lines {
    display: grid;
    gap: 12px;
}

.contact-line {
    padding: 14px 16px;
    border-radius: 16px;
    background: #F5F7FB;
    color: #243447;
    border: 1px solid rgba(40,156,255,0.12);
}

.contact-line b {
    color: #289CFF;
}

.site-footer {
    background: #243447;
    color: #EAF3FF;
    margin-top: 42px;
}

.footer-wrap {
    max-width: 1200px;
    margin: 0 auto;
    padding: 42px 22px 28px;
    display: grid;
    grid-template-columns: minmax(240px, .85fr) minmax(0, 1.15fr);
    gap: 36px;
}

.footer-brand img {
    width: 138px;
    margin-bottom: 14px;
}

.footer-brand p,
.footer-note p {
    color: #EAF3FF;
    opacity: .88;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, minmax(0,1fr));
    gap: 22px;
}

.footer-links h3 {
    color: #EAF3FF;
    font-size: 17px;
    margin-bottom: 12px;
}

.footer-links a {
    display: block;
    color: #EAF3FF;
    opacity: .86;
    margin: 8px 0;
}

.footer-links a:hover {
    opacity: 1;
    color: #FFFFFF;
}

.footer-note {
    border-top: 1px solid rgba(234,243,255,.16);
    max-width: 1200px;
    margin: 0 auto;
    padding: 18px 22px 24px;
}

.footer-note p {
    margin: 0;
    font-size: 14px;
}

@media (max-width: 1080px) {
    .desktop-header {
        display: none;
    }

    .mobile-header {
        display: flex;
    }

    .grid-4 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

    .page-hero,
    .product-media,
    .footer-wrap {
        grid-template-columns: 1fr;
    }

    .hero-visual {
        order: -1;
    }
}

@media (max-width: 720px) {
    body {
        line-height: 1.72;
    }

    .container,
    .section,
    .page-section,
    .notice-bar {
        padding-left: 16px;
        padding-right: 16px;
    }

    .banner-slider {
        margin: 18px 16px 26px;
        border-radius: 16px;
        height: clamp(190px, 58vw, 330px);
    }

    .slider-arrow {
        width: 38px;
        height: 38px;
        font-size: 26px;
    }

    .slider-prev {
        left: 10px;
    }

    .slider-next {
        right: 10px;
    }

    .slider-dots {
        bottom: 10px;
    }

    .section-block,
    .page-hero {
        border-radius: 18px;
        padding: 22px;
    }

    .page-hero {
        margin: 18px 16px 26px;
    }

    .grid-2,
    .grid-3,
    .grid-4,
    .kpi-row,
    .footer-links {
        grid-template-columns: 1fr;
    }

    .main-btn {
        min-height: 40px;
        padding: 9px 20px;
    }

    .mobile-logo img {
        width: 118px;
    }

    .brand-logo img,
    .drawer-logo img {
        width: 124px;
    }

    .hero-visual img {
        max-height: 260px;
    }

    h1 {
        font-size: 30px;
    }

    h2 {
        font-size: 24px;
    }

    .lead {
        font-size: 16px;
    }
}