:root {
    --page-bg: #F0F3FA;
    --sky: #D8F7FF;
    --nav-bg: #EAFBFF;
    --soft-bg: #F5FDFF;
    --white: #FFFFFF;
    --blue: #27A9E8;
    --blue-deep: #167BB8;
    --text: #1D2B36;
    --muted: #5D7280;
    --light-text: #8194A0;
    --footer: #063B5C;
    --footer-text: #EAFBFF;
    --card: rgba(255,255,255,0.88);
    --border: rgba(39,169,232,0.22);
    --shadow: 0 14px 36px rgba(16,126,180,0.14);
    --btn: linear-gradient(180deg, #52C8FF 0%, #27A9E8 55%, #168BD0 100%);
    --btn-hover: linear-gradient(180deg, #63D2FF 0%, #1597D8 100%);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    background: var(--page-bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    line-height: 1.8;
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
.site-header {
    position: sticky;
    top: 0;
    z-index: 9999;
    background: #EAFBFF;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 24px rgba(16,126,180,0.14);
}
.desktop-nav-wrap {
    width: min(1240px, calc(100% - 36px));
    margin: 0 auto;
    min-height: 76px;
    display: flex;
    align-items: center;
    gap: 22px;
}
.brand-logo img { width: 136px; max-height: 52px; object-fit: contain; }
.nav {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 4px;
    white-space: nowrap;
}
.nav a {
    color: #167BB8;
    font-weight: 700;
    font-size: 15px;
    padding: 10px 12px;
    border-radius: 13px;
    transition: all .2s ease;
}
.nav a:hover,
.nav a.active {
    color: #27A9E8;
    background: linear-gradient(180deg, rgba(39,169,232,0.14), rgba(39,169,232,0.04));
    box-shadow: inset 0 -2px 0 #27A9E8, 0 10px 22px rgba(39,169,232,0.16);
}
.main-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 10px 24px;
    border-radius: 999px;
    background: var(--btn);
    color: #FFFFFF;
    box-shadow: 0 10px 24px rgba(39,169,232,0.28);
    font-weight: 800;
    border: 0;
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.main-btn:hover { background: var(--btn-hover); transform: translateY(-1px); box-shadow: 0 14px 28px rgba(39,169,232,0.32); }
.header-btn { flex: 0 0 auto; }
.mobile-topbar { display: none; }
.menu-toggle,
.drawer-close,
.slider-arrow,
.slider-dot { border: 0; cursor: pointer; font-family: inherit; }
.menu-toggle {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: #FFFFFF;
    box-shadow: 0 8px 20px rgba(16,126,180,0.12);
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
}
.menu-toggle span { width: 21px; height: 2px; background: #167BB8; border-radius: 8px; }
.drawer-mask {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.42);
    z-index: 9998;
    opacity: 0;
    visibility: hidden;
    transition: opacity .25s ease, visibility .25s ease;
}
.mobile-drawer {
    position: fixed;
    top: 0;
    left: 0;
    width: min(84vw, 320px);
    height: 100vh;
    background: #F5FDFF;
    z-index: 10000;
    transform: translateX(-104%);
    transition: transform .28s ease;
    box-shadow: 22px 0 42px rgba(6,59,92,0.18);
    overflow-y: auto;
}
.drawer-open { overflow: hidden; }
.drawer-open .drawer-mask { 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(39,169,232,0.18);
}
.drawer-logo img { width: 132px; max-height: 52px; object-fit: contain; }
.drawer-close {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: #EAFBFF;
    color: #167BB8;
    font-size: 26px;
    line-height: 1;
}
.drawer-nav { padding: 14px; display: grid; gap: 8px; }
.drawer-nav a {
    color: #167BB8;
    padding: 12px 14px;
    border-radius: 14px;
    font-weight: 750;
    background: rgba(255,255,255,0.62);
    border: 1px solid rgba(39,169,232,0.12);
}
.drawer-nav a.active { color: #27A9E8; background: rgba(39,169,232,0.13); box-shadow: inset 3px 0 0 #27A9E8; }
main { min-height: 70vh; }
.container { width: min(1200px, calc(100% - 36px)); margin: 0 auto; }
.banner-slider {
    width: min(1200px, calc(100% - 36px));
    margin: 28px auto 36px;
    border-radius: 20px;
    background: #F5FDFF;
    box-shadow: 0 18px 40px rgba(16,126,180,0.14);
    overflow: hidden;
    position: relative;
    min-height: clamp(260px, 42vw, 520px);
}
.slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    pointer-events: none;
    transition: opacity .5s ease;
    display: grid;
    grid-template-columns: minmax(0, 1fr);
}
.slide.active { opacity: 1; pointer-events: auto; }
.slide img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: #F5FDFF;
}
.slide-copy {
    position: absolute;
    left: clamp(20px, 5vw, 64px);
    bottom: clamp(22px, 5vw, 58px);
    width: min(520px, 78%);
    padding: clamp(18px, 3vw, 30px);
    border-radius: 22px;
    background: rgba(245,253,255,0.88);
    box-shadow: 0 14px 34px rgba(16,126,180,0.18);
    border: 1px solid rgba(39,169,232,0.18);
}
.slide-copy span,
.kicker,
.tag { color: #27A9E8; font-weight: 800; letter-spacing: .04em; }
.slide-copy h1,
.slide-copy h2 { margin: 8px 0 10px; color: #27A9E8; font-size: clamp(28px, 4vw, 52px); line-height: 1.16; }
.slide-copy p { margin: 0; color: #1D2B36; }
.slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    color: #FFFFFF;
    background: rgba(39,169,232,0.82);
    box-shadow: 0 10px 24px rgba(39,169,232,0.28);
    font-size: 26px;
    z-index: 2;
}
.slider-prev { left: 18px; }
.slider-next { right: 18px; }
.slider-dots {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 9px;
    z-index: 3;
}
.slider-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(22,123,184,0.28);
    padding: 0;
}
.slider-dot.active { width: 28px; border-radius: 999px; background: #27A9E8; }
.section { padding: 58px 0; }
.section-soft { background: linear-gradient(180deg, rgba(216,247,255,0.64), rgba(245,253,255,0.82)); }
.section-white { background: rgba(255,255,255,0.48); }
.section-head { margin: 0 auto 28px; max-width: 840px; text-align: center; }
h1, h2, h3, .section-title { color: #27A9E8; }
h1 { font-size: clamp(34px, 5vw, 58px); line-height: 1.15; margin: 0 0 18px; }
h2, .section-title { font-size: clamp(26px, 3.4vw, 38px); line-height: 1.25; margin: 0 0 14px; }
h3 { font-size: 21px; margin: 0 0 10px; }
p { margin: 0 0 14px; }
.lead { color: #5D7280; font-size: 18px; }
.small-text { color: #8194A0; font-size: 14px; }
.hero-page {
    padding: 52px 0 36px;
    background: radial-gradient(circle at top left, #D8F7FF 0%, #F5FDFF 42%, #F0F3FA 100%);
}
.hero-grid,
.two-col,
.app-layout,
.brand-entry {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(300px, .95fr);
    gap: 30px;
    align-items: center;
}
.hero-copy,
.card,
.zone-card,
.info-card,
.review-card,
.faq-item,
.notice-box,
.timeline-item {
    background: rgba(255,255,255,0.88);
    border: 1px solid rgba(39,169,232,0.22);
    box-shadow: 0 14px 36px rgba(16,126,180,0.12);
    border-radius: 22px;
}
.hero-copy { padding: clamp(24px, 4vw, 44px); }
.hero-actions { display: flex; gap: 18px; align-items: center; flex-wrap: wrap; margin-top: 20px; }
.text-link { color: #27A9E8; font-weight: 800; border-bottom: 1px solid rgba(39,169,232,0.36); }
.text-link:hover { color: #1597D8; }
.tag-row { display: flex; gap: 10px; flex-wrap: wrap; margin: 18px 0; }
.tag-row span,
.pill { display: inline-flex; padding: 7px 12px; border-radius: 999px; background: rgba(39,169,232,0.12); color: #27A9E8; font-weight: 800; font-size: 14px; }
.visual-card { border-radius: 24px; background: #F5FDFF; border: 1px solid rgba(39,169,232,0.22); box-shadow: var(--shadow); overflow: hidden; padding: 14px; }
.visual-card img,
.content-img,
.zone-card img,
.app-section img,
.image-panel img {
    width: 100%;
    height: auto;
    max-height: 420px;
    object-fit: contain;
    background: #F5FDFF;
    border-radius: 18px;
}
.image-panel { padding: 12px; border-radius: 22px; background: #F5FDFF; border: 1px solid rgba(39,169,232,0.2); box-shadow: var(--shadow); }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.card,
.zone-card,
.info-card,
.review-card,
.faq-item,
.notice-box,
.timeline-item { padding: 24px; }
.card-number { display: inline-flex; width: 38px; height: 38px; align-items: center; justify-content: center; border-radius: 14px; background: rgba(39,169,232,0.12); color: #27A9E8; font-weight: 900; margin-bottom: 12px; }
.zone-card img { margin-bottom: 16px; max-height: 210px; }
.info-list { display: grid; gap: 14px; margin: 0; padding: 0; list-style: none; }
.info-list li { padding-left: 18px; position: relative; color: #5D7280; }
.info-list li::before { content: ''; position: absolute; left: 0; top: .72em; width: 7px; height: 7px; border-radius: 50%; background: #27A9E8; }
.review-card strong { display: block; color: #27A9E8; margin-bottom: 8px; }
.faq-list { display: grid; gap: 16px; }
.faq-item h3 { font-size: 18px; }
.notice-box { background: linear-gradient(180deg, rgba(234,251,255,0.94), rgba(255,255,255,0.9)); }
.notice-box p:last-child { margin-bottom: 0; }
.footer-reminder { margin-top: 20px; padding: 20px; border-radius: 18px; background: rgba(39,169,232,0.1); color: #5D7280; }
.timeline { display: grid; gap: 18px; counter-reset: steps; }
.timeline-item { position: relative; padding-left: 70px; }
.timeline-item::before { counter-increment: steps; content: counter(steps); position: absolute; left: 22px; top: 24px; width: 34px; height: 34px; border-radius: 12px; display: flex; align-items: center; justify-content: center; background: rgba(39,169,232,0.12); color: #27A9E8; font-weight: 900; }
.site-footer { background: #063B5C; color: #EAFBFF; padding: 48px 0 24px; }
.footer-inner { width: min(1200px, calc(100% - 36px)); margin: 0 auto; display: grid; grid-template-columns: 1.1fr 1.5fr; gap: 34px; align-items: start; }
.footer-brand img { width: 150px; max-height: 60px; object-fit: contain; margin-bottom: 16px; }
.footer-brand p { color: rgba(234,251,255,0.84); margin: 0; }
.footer-links { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.footer-links h3 { color: #EAFBFF; font-size: 17px; }
.footer-links a { display: block; color: rgba(234,251,255,0.82); margin: 8px 0; }
.footer-links a:hover { color: #FFFFFF; }
.footer-note { width: min(1200px, calc(100% - 36px)); margin: 30px auto 0; padding-top: 20px; border-top: 1px solid rgba(234,251,255,0.18); color: rgba(234,251,255,0.84); font-size: 14px; }
.footer-note p { margin: 0; }
@media (max-width: 1100px) {
    .nav a { font-size: 14px; padding: 9px 8px; }
    .desktop-nav-wrap { gap: 12px; width: min(100% - 24px, 1240px); }
}
@media (max-width: 920px) {
    .desktop-nav-wrap { display: none; }
    .mobile-topbar {
        min-height: 68px;
        padding: 0 14px;
        display: grid;
        grid-template-columns: 48px 1fr auto;
        align-items: center;
        gap: 10px;
        background: #EAFBFF;
    }
    .mobile-logo { justify-self: center; }
    .mobile-logo img { width: 132px; max-height: 50px; object-fit: contain; }
    .header-btn { min-height: 38px; padding: 8px 18px; }
    .hero-grid,
    .two-col,
    .app-layout,
    .brand-entry,
    .footer-inner { grid-template-columns: 1fr; }
    .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .banner-slider { width: calc(100% - 24px); margin-top: 18px; min-height: 420px; }
    .slide-copy { width: calc(100% - 28px); left: 14px; bottom: 52px; }
    .slider-arrow { width: 38px; height: 38px; font-size: 22px; }
}
@media (max-width: 620px) {
    .container { width: calc(100% - 24px); }
    .section { padding: 42px 0; }
    .grid-2,
    .grid-3,
    .grid-4 { grid-template-columns: 1fr; }
    .banner-slider { min-height: 520px; border-radius: 18px; }
    .slide { align-items: start; }
    .slide img { height: 58%; }
    .slide-copy { bottom: 48px; padding: 18px; }
    .slider-prev { left: 10px; }
    .slider-next { right: 10px; }
    .hero-page { padding-top: 30px; }
    .hero-copy, .card, .zone-card, .info-card, .review-card, .faq-item, .notice-box { padding: 20px; }
    .footer-links { grid-template-columns: 1fr; }
    .timeline-item { padding-left: 58px; }
    .timeline-item::before { left: 16px; }
}