:root {
    --page-bg: #EAF2FB;
    --surface: #FFFFFF;
    --soft-1: #F4F8FF;
    --soft-2: #EDF5FF;
    --soft-3: #E1ECF8;
    --primary: #2FA8F7;
    --primary-light: #45C7FF;
    --primary-deep: #137CD8;
    --title: #137CD8;
    --text: #24364F;
    --muted: #5D718A;
    --line: rgba(47,168,247,0.14);
    --footer: #102B46;
    --footer-text: #EAF6FF;
    --shadow: 0 18px 48px rgba(36, 74, 117, 0.12);
    --radius: 28px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; max-width: 100%; overflow-x: hidden; }
html { scroll-behavior: smooth; }
body {
    min-height: 100vh;
    background: var(--page-bg);
    color: var(--text);
    font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    line-height: 1.75;
}
a, button { touch-action: manipulation; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
img { display: block; max-width: 100%; height: auto; }
body.drawer-open { overflow-y: hidden; }
.skip-link {
    position: fixed;
    left: 14px;
    top: -60px;
    z-index: 12000;
    background: #fff;
    color: var(--primary-deep);
    padding: 10px 14px;
    border-radius: 10px;
}
.skip-link:focus { top: 10px; }

.desktop-header {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 9000;
    height: 76px;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
}
.nav-wrap {
    max-width: 1240px;
    height: 100%;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 190px minmax(0, 1fr) 110px;
    align-items: center;
    gap: 20px;
}
.brand-logo img, .mobile-logo img, .drawer-logo img, .footer-brand img { object-fit: contain; }
.brand-logo img { width: 154px; max-height: 52px; }
.core-nav { display: flex; align-items: center; justify-content: center; gap: 8px; white-space: nowrap; }
.core-nav a {
    position: relative;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    padding: 0 16px;
    border-radius: 999px;
    color: var(--muted);
    font-weight: 700;
}
.core-nav a:hover { color: var(--primary-deep); background: var(--soft-2); }
.core-nav a.is-active { color: var(--primary-deep); }
.core-nav a.is-active::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 4px;
    width: 24px;
    height: 3px;
    border-radius: 999px;
    background: var(--primary);
    transform: translateX(-50%);
}
.main-btn {
    min-width: 88px;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    background: linear-gradient(135deg, #45C7FF 0%, #2FA8F7 48%, #137CD8 100%);
    color: #FFFFFF;
    border-radius: 999px;
    box-shadow: 0 12px 26px rgba(19,124,216,0.18);
    font-weight: 800;
    border: 0;
}
.main-btn:hover { transform: translateY(-1px); box-shadow: 0 14px 30px rgba(19,124,216,0.25); }

.channel-bar {
    position: fixed;
    left: 0;
    right: 0;
    top: 76px;
    z-index: 8800;
    height: 54px;
    display: flex;
    align-items: center;
    background: rgba(244,248,255,0.94);
    border-bottom: 1px solid var(--line);
}
.channel-scroll {
    max-width: 1240px;
    width: 100%;
    margin: 0 auto;
    padding: 7px 24px;
    display: flex;
    gap: 8px;
    overflow-x: auto;
    scrollbar-width: thin;
}
.channel-scroll a {
    flex: 0 0 auto;
    padding: 7px 13px;
    border-radius: 999px;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.2;
    white-space: nowrap;
}
.channel-scroll a:hover, .channel-scroll a.is-active { background: #fff; color: var(--primary-deep); box-shadow: 0 8px 20px rgba(36,74,117,0.08); }
.mobile-header { display: none; }
.drawer-mask, .mobile-drawer, .mobile-bottom-nav { display: none; }

.site-main { padding-top: 130px; }
.page-shell { max-width: 1240px; margin: 0 auto; padding: 34px 24px 82px; }
.section { margin-top: 28px; }
.section-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 34px;
}
.section-soft { background: var(--soft-1); }
.section-heading { margin-bottom: 22px; }
.eyebrow {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    padding: 5px 12px;
    border-radius: 999px;
    background: var(--soft-2);
    color: var(--primary-deep);
    font-size: 14px;
    font-weight: 800;
}
h1, h2, h3 { margin: 0; line-height: 1.35; color: var(--title); }
h1 { margin-top: 12px; font-size: clamp(32px, 5vw, 54px); }
h2 { font-size: clamp(25px, 3.6vw, 38px); }
h3 { font-size: 21px; }
p { margin: 12px 0 0; }
.lead { max-width: 820px; color: var(--muted); font-size: 18px; }
.text-link { display: inline-flex; margin-top: 14px; color: var(--primary-deep); font-weight: 800; }
.text-link::after { content: " →"; }
.text-link:hover { color: var(--primary); }

.hero-inner, .split-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(300px, .95fr);
    gap: 34px;
    align-items: center;
}
.hero-visual, .content-visual {
    border-radius: 24px;
    overflow: hidden;
    background: var(--soft-3);
    min-height: 260px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.hero-visual img, .content-visual img { width: 100%; height: 100%; object-fit: contain; }

.banner-slider {
    position: relative;
    z-index: 1;
    overflow: hidden;
    background: #fff;
    border-radius: 34px;
    box-shadow: var(--shadow);
    aspect-ratio: 16 / 6.4;
    min-height: 260px;
}
.slides { position: relative; width: 100%; height: 100%; }
.slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity .45s ease, visibility .45s ease;
}
.slide.is-active { opacity: 1; visibility: visible; }
.slide img { width: 100%; height: 100%; object-fit: contain; background: #fff; }
.slider-prev, .slider-next {
    position: absolute;
    z-index: 2;
    top: 50%;
    width: 46px;
    height: 46px;
    border: 0;
    border-radius: 50%;
    transform: translateY(-50%);
    background: rgba(255,255,255,0.9);
    color: var(--primary-deep);
    cursor: pointer;
    box-shadow: 0 10px 24px rgba(16,43,70,.16);
}
.slider-prev { left: 18px; }
.slider-next { right: 18px; }
.slider-dots {
    position: absolute;
    z-index: 2;
    left: 50%;
    bottom: 16px;
    transform: translateX(-50%);
    display: flex;
    gap: 9px;
}
.slider-dot {
    width: 12px;
    height: 12px;
    padding: 0;
    border: 2px solid rgba(255,255,255,.9);
    border-radius: 50%;
    background: rgba(19,124,216,.35);
    cursor: pointer;
}
.slider-dot.is-active { width: 30px; border-radius: 999px; background: var(--primary-deep); }

.quick-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.quick-card, .info-card, .review-card, .faq-item {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 22px;
    padding: 24px;
}
.quick-card { min-height: 190px; display: flex; flex-direction: column; }
.quick-card p { color: var(--muted); flex: 1; }
.info-strip {
    border-radius: 24px;
    padding: 24px 28px;
    background: linear-gradient(135deg, #F4F8FF 0%, #E1ECF8 100%);
    border: 1px solid var(--line);
    color: var(--muted);
}
.info-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.info-card p, .review-card p, .faq-item p { color: var(--muted); }
.two-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.three-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.media-card {
    overflow: hidden;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 24px;
}
.media-card img { width: 100%; aspect-ratio: 16 / 9; object-fit: contain; background: var(--soft-2); }
.media-card .card-body { padding: 24px; }
.media-card p { color: var(--muted); }
.point-list { margin: 16px 0 0; padding: 0; list-style: none; display: grid; gap: 9px; }
.point-list li { position: relative; padding-left: 20px; color: var(--muted); }
.point-list li::before { content: ""; position: absolute; left: 0; top: .72em; width: 8px; height: 8px; border-radius: 50%; background: var(--primary); }
.review-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.faq-list { display: grid; gap: 14px; }
.faq-item h3 { font-size: 19px; }
.notice-box {
    padding: 22px 24px;
    border-radius: 20px;
    border-left: 4px solid var(--primary);
    background: var(--soft-2);
    color: var(--muted);
}

.floating-service {
    position: fixed;
    z-index: 8000;
    right: 18px;
    top: 50%;
    width: 116px;
    transform: translateY(-50%);
    display: grid;
    gap: 8px;
    padding: 12px;
    border-radius: 22px;
    background: rgba(255,255,255,.95);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
}
.floating-service > a:not(.main-btn), .floating-service button {
    min-height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    border: 0;
    background: var(--soft-1);
    color: var(--primary-deep);
    font-weight: 700;
    cursor: pointer;
}
.floating-service .main-btn { min-width: 0; padding-inline: 10px; }

.site-footer { background: var(--footer); color: var(--footer-text); }
.footer-grid {
    max-width: 1240px;
    margin: 0 auto;
    padding: 54px 24px 34px;
    display: grid;
    grid-template-columns: 1.6fr repeat(3, 1fr);
    gap: 36px;
}
.footer-brand img { width: 160px; max-height: 58px; filter: brightness(0) invert(1); }
.site-footer h2 { color: #fff; font-size: 18px; margin-bottom: 12px; }
.site-footer p { color: rgba(234,246,255,.78); font-size: 14px; }
.site-footer a { display: block; margin-top: 8px; color: rgba(234,246,255,.88); }
.site-footer a:hover { color: #fff; }
.footer-bottom {
    max-width: 1240px;
    margin: 0 auto;
    padding: 20px 24px 28px;
    display: flex;
    align-items: center;
    gap: 20px;
    border-top: 1px solid rgba(255,255,255,.12);
    color: rgba(234,246,255,.72);
}
.footer-bottom a { margin-top: 0; }

@media (max-width: 1360px) {
    .floating-service { display: none; }
}
@media (max-width: 980px) {
    .nav-wrap { grid-template-columns: 160px minmax(0, 1fr) 96px; padding-inline: 16px; gap: 10px; }
    .core-nav a { padding-inline: 11px; font-size: 14px; }
    .quick-grid, .three-grid, .review-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .info-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 768px) {
    .desktop-header, .channel-bar, .floating-service { display: none; }
    .mobile-header {
        position: fixed;
        inset: 0 0 auto 0;
        z-index: 9000;
        height: 68px;
        display: grid;
        grid-template-columns: 54px minmax(0, 1fr) 82px;
        align-items: center;
        gap: 10px;
        padding: 0 12px;
        background: rgba(255,255,255,.96);
        backdrop-filter: blur(14px);
        border-bottom: 1px solid var(--line);
    }
    .menu-toggle, .drawer-close {
        width: 44px;
        height: 44px;
        border: 0;
        border-radius: 14px;
        background: var(--soft-2);
        color: var(--primary-deep);
        cursor: pointer;
        font-size: 24px;
    }
    .mobile-logo { display: flex; justify-content: center; min-width: 0; }
    .mobile-logo img { width: 132px; max-height: 44px; }
    .mobile-register { min-width: 76px; min-height: 44px; padding: 8px 14px; position: relative; z-index: 1; }
    .drawer-mask {
        position: fixed;
        inset: 0;
        z-index: 9990;
        display: none;
        visibility: hidden;
        pointer-events: none;
        background: rgba(16,43,70,.42);
    }
    .drawer-mask.is-open { display: block; visibility: visible; pointer-events: auto; }
    .mobile-drawer {
        position: fixed;
        z-index: 10000;
        inset: 0 auto 0 0;
        width: min(86vw, 360px);
        display: flex;
        flex-direction: column;
        background: #fff;
        transform: translateX(-105%);
        transition: transform .28s ease;
        box-shadow: 24px 0 54px rgba(16,43,70,.22);
        overflow-y: auto;
        overscroll-behavior: contain;
    }
    .mobile-drawer.is-open { transform: translateX(0); }
    .drawer-head {
        position: sticky;
        top: 0;
        z-index: 2;
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 14px 16px;
        background: #fff;
        border-bottom: 1px solid var(--line);
    }
    .drawer-logo img { width: 145px; max-height: 50px; }
    .drawer-links { padding: 12px 14px 110px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
    .drawer-links a {
        min-height: 46px;
        display: flex;
        align-items: center;
        padding: 10px 13px;
        border-radius: 14px;
        background: var(--soft-1);
        color: var(--muted);
        font-weight: 700;
    }
    .drawer-links a.is-active { background: var(--soft-3); color: var(--primary-deep); }
    .site-main { padding-top: 68px; }
    .page-shell { padding: 20px 14px 98px; }
    .section-card { padding: 24px 18px; border-radius: 22px; }
    .hero-inner, .split-grid, .two-grid, .three-grid, .quick-grid, .review-grid, .info-grid { grid-template-columns: 1fr; }
    .hero-visual, .content-visual { min-height: 200px; }
    .banner-slider { min-height: 190px; aspect-ratio: 16 / 8.8; border-radius: 24px; }
    .slider-prev, .slider-next { width: 44px; height: 44px; }
    .slider-prev { left: 8px; }
    .slider-next { right: 8px; }
    .footer-grid { grid-template-columns: 1fr; padding: 42px 18px 28px; }
    .footer-bottom { padding: 18px 18px 92px; flex-wrap: wrap; }
    .mobile-bottom-nav {
        position: fixed;
        z-index: 8500;
        left: 10px;
        right: 10px;
        bottom: max(10px, env(safe-area-inset-bottom));
        min-height: 62px;
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 6px;
        padding: 7px;
        border-radius: 22px;
        background: rgba(255,255,255,.96);
        border: 1px solid var(--line);
        box-shadow: 0 14px 40px rgba(16,43,70,.2);
        backdrop-filter: blur(14px);
    }
    .mobile-bottom-nav a {
        min-height: 48px;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 15px;
        color: var(--primary-deep);
        font-weight: 800;
    }
    .mobile-bottom-nav a:active { background: var(--soft-2); }
}

@media (max-width: 420px) {
    .mobile-header { grid-template-columns: 48px minmax(0, 1fr) 76px; }
    .mobile-logo img { width: 116px; }
    .mobile-register { min-width: 72px; padding-inline: 10px; }
    h1 { font-size: 31px; }
    .drawer-links { grid-template-columns: 1fr 1fr; }
    .banner-slider { min-height: 175px; }
}