:root {
    --bg: #F4FBFF;
    --surface: #FFFFFF;
    --surface-soft: #E8F7FF;
    --primary: #11AEEA;
    --primary-strong: #1688D8;
    --deep: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --border: rgba(17, 174, 234, 0.18);
    --footer: #073A68;
    --footer-text: #EAF8FF;
    --shadow: 0 18px 46px rgba(21, 90, 157, 0.10);
    --radius-lg: 28px;
    --radius-md: 20px;
    --radius-sm: 14px;
    --container: min(100% - 32px, 1360px);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    padding-top: 80px;
    overflow-x: hidden;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    line-height: 1.75;
    text-rendering: optimizeLegibility;
}
body.drawer-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
button, input, textarea, select { font: inherit; }
.skip-link {
    position: fixed; left: 16px; top: -80px; z-index: 20000;
    padding: 10px 16px; border-radius: 10px; background: var(--deep); color: #fff;
}
.skip-link:focus { top: 12px; }
.site-header {
    position: fixed; inset: 0 0 auto 0; z-index: 10000;
    height: 80px; background: rgba(255,255,255,.96);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 10px 30px rgba(21,90,157,.08);
    backdrop-filter: blur(14px);
}
.header-inner {
    width: min(100% - 32px, 1360px); height: 100%; margin: 0 auto;
    display: flex; align-items: center; gap: clamp(14px, 2vw, 30px); min-width: 0;
}
.site-logo { flex: 0 0 auto; display: inline-flex; align-items: center; }
.site-logo img { width: auto; max-width: 152px; max-height: 52px; }
.desktop-nav {
    flex: 1; min-width: 0; display: flex; align-items: center; justify-content: center;
    gap: clamp(8px, 1vw, 18px); white-space: nowrap;
}
.desktop-nav a {
    position: relative; flex: 0 1 auto; min-width: 0;
    padding: 27px 0 24px; color: var(--text); font-weight: 700;
    font-size: clamp(12px, .92vw, 15px); white-space: nowrap;
    transition: color .2s ease;
}
.desktop-nav a::after {
    content: ""; position: absolute; left: 12%; right: 12%; bottom: 16px;
    height: 3px; border-radius: 999px; background: var(--primary);
    transform: scaleX(0); transition: transform .2s ease;
}
.desktop-nav a:hover, .desktop-nav a.active { color: var(--primary-strong); }
.desktop-nav a:hover::after, .desktop-nav a.active::after { transform: scaleX(1); }
.header-actions { flex: 0 0 auto; display: flex; align-items: center; gap: 10px; }
.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(135deg, #35D7FF 0%, #1688D8 100%);
    color: #fff; font-weight: 800; white-space: nowrap;
    box-shadow: 0 12px 28px rgba(22,136,216,.24);
    transition: transform .2s ease, box-shadow .2s ease;
}
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 16px 34px rgba(22,136,216,.3); }
.menu-toggle {
    display: none; width: 44px; height: 44px; padding: 10px; border: 1px solid var(--border);
    border-radius: 13px; background: var(--surface); cursor: pointer;
}
.menu-toggle span { display: block; height: 2px; margin: 5px 0; background: var(--primary-strong); border-radius: 99px; }
.drawer-overlay {
    position: fixed; inset: 0; z-index: 10001; background: rgba(7,58,104,.48);
    opacity: 0; visibility: hidden; transition: opacity .25s ease, visibility .25s ease;
}
.drawer-open .drawer-overlay { opacity: 1; visibility: visible; }
.mobile-drawer {
    position: fixed; top: 0; right: 0; bottom: 0; z-index: 10002; width: min(86vw, 360px);
    background: #fff; transform: translateX(105%); transition: transform .28s ease;
    overflow-y: auto; box-shadow: -20px 0 50px rgba(7,58,104,.2);
}
.mobile-drawer.is-open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; min-height: 72px; padding: 12px 18px; border-bottom: 1px solid var(--border); }
.drawer-logo img { max-height: 44px; width: auto; }
.drawer-close { width: 40px; height: 40px; border: 0; border-radius: 50%; background: var(--surface-soft); color: var(--primary-strong); font-size: 28px; line-height: 1; cursor: pointer; }
.drawer-nav { display: grid; gap: 8px; padding: 16px; }
.drawer-nav a { padding: 12px 14px; border-radius: 12px; background: #F7FCFF; color: var(--text); font-weight: 700; }
.drawer-nav a:hover { color: var(--primary-strong); background: var(--surface-soft); }
.drawer-action { padding: 0 16px 24px; }
.drawer-action .main-btn { width: 100%; }
.site-main, .page-main, .site-footer .footer-inner, .footer-bottom { width: var(--container); margin-inline: auto; }
.page-main { padding: 30px 0 60px; }
.section { margin: 0 0 34px; }
.section-shell, .hero-panel, .notice-panel, .review-card, .faq-item, .info-card, .feature-card, .category-card, .product-card {
    background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow);
}
.section-shell { padding: clamp(24px, 4vw, 48px); border-radius: var(--radius-lg); }
.section-soft { background: var(--surface-soft); }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 22px; }
.section-head > div { max-width: 820px; }
.eyebrow { display: inline-flex; margin-bottom: 8px; color: var(--primary-strong); font-weight: 800; letter-spacing: .08em; font-size: 13px; }
h1, h2, h3 { margin: 0 0 14px; line-height: 1.3; color: var(--deep); }
h1 { font-size: clamp(32px, 5vw, 58px); }
h2 { font-size: clamp(25px, 3.2vw, 38px); }
h3 { font-size: 20px; }
p { margin: 0 0 14px; }
.lead { font-size: clamp(16px, 1.5vw, 19px); color: var(--muted); }
.text-link { display: inline-flex; color: var(--primary-strong); font-weight: 800; }
.text-link:hover { text-decoration: underline; }
.hero-panel {
    display: grid; grid-template-columns: minmax(0,1.08fr) minmax(300px,.92fr);
    gap: clamp(24px, 4vw, 54px); align-items: center;
    padding: clamp(28px, 5vw, 58px); border-radius: var(--radius-lg); overflow: hidden;
    background: linear-gradient(145deg, #FFFFFF 0%, #E8F7FF 100%);
}
.hero-panel.no-image { grid-template-columns: 1fr; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; margin-top: 22px; }
.media-frame { margin: 0; border-radius: var(--radius-md); overflow: hidden; background: #fff; border: 1px solid var(--border); box-shadow: 0 16px 36px rgba(21,90,157,.1); }
.media-frame img { width: 100%; height: auto; max-height: 520px; object-fit: contain; background: #fff; }
.content-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 18px; }
.content-grid.three { grid-template-columns: repeat(3, minmax(0,1fr)); }
.content-grid.four { grid-template-columns: repeat(4, minmax(0,1fr)); }
.info-card, .feature-card, .category-card, .product-card { padding: 22px; border-radius: var(--radius-md); }
.info-card p, .feature-card p, .category-card p, .product-card p { color: var(--muted); }
.card-number { display: inline-flex; width: 34px; height: 34px; align-items: center; justify-content: center; margin-bottom: 14px; border-radius: 10px; background: var(--surface-soft); color: var(--primary-strong); font-weight: 900; }
.product-card img { width: 100%; max-height: 250px; object-fit: contain; margin-bottom: 18px; border-radius: 14px; background: #fff; }
.split-section { display: grid; grid-template-columns: minmax(0,1fr) minmax(300px,.88fr); gap: 30px; align-items: center; }
.split-section.reverse > :first-child { order: 2; }
.split-section.reverse > :last-child { order: 1; }
.steps { counter-reset: step; display: grid; gap: 14px; }
.step-item { position: relative; padding: 18px 18px 18px 66px; border-radius: 16px; background: #fff; border: 1px solid var(--border); }
.step-item::before { counter-increment: step; content: counter(step); position: absolute; left: 18px; top: 18px; width: 32px; height: 32px; display: grid; place-items: center; border-radius: 10px; background: linear-gradient(135deg,#35D7FF,#1688D8); color:#fff; font-weight:900; }
.notice-panel { padding: 24px; border-radius: var(--radius-md); background: linear-gradient(135deg, #E8F7FF, #FFFFFF); }
.notice-panel strong { color: var(--deep); }
.review-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 18px; }
.review-card { padding: 22px; border-radius: var(--radius-md); }
.review-card strong { display: block; color: var(--primary-strong); margin-bottom: 8px; }
.review-card p { color: var(--muted); }
.faq-list { display: grid; gap: 14px; }
.faq-item { padding: 20px 22px; border-radius: 18px; }
.faq-item h3 { font-size: 18px; }
.faq-item p { color: var(--muted); margin-bottom: 0; }
.compliance-bar { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 12px; margin-top: 20px; }
.compliance-bar span { padding: 13px 14px; border-radius: 13px; background: #fff; border: 1px solid var(--border); color: var(--deep); font-weight: 700; text-align: center; }
.carousel {
    position: relative; width: var(--container); margin: 28px auto 34px; overflow: hidden;
    border-radius: var(--radius-lg); background: #fff; border: 1px solid var(--border); box-shadow: var(--shadow);
}
.carousel-track { position: relative; height: clamp(210px, 39vw, 540px); }
.carousel-slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity .5s ease, visibility .5s ease; }
.carousel-slide.is-active { opacity: 1; visibility: visible; }
.carousel-slide img { width: 100%; height: 100%; object-fit: contain; background: #fff; }
.carousel-arrow { position: absolute; top: 50%; z-index: 3; width: 44px; height: 44px; transform: translateY(-50%); border: 0; border-radius: 50%; background: rgba(255,255,255,.9); color: var(--primary-strong); font-size: 28px; box-shadow: 0 10px 24px rgba(7,58,104,.18); cursor: pointer; }
.carousel-arrow.prev { left: 18px; }
.carousel-arrow.next { right: 18px; }
.carousel-dots { position: absolute; left: 0; right: 0; bottom: 16px; z-index: 3; display: flex; justify-content: center; gap: 8px; }
.carousel-dots button { width: 10px; height: 10px; padding: 0; border: 0; border-radius: 99px; background: rgba(21,90,157,.35); cursor: pointer; }
.carousel-dots button.is-active { width: 28px; background: var(--primary-strong); }
.site-footer { margin-top: 26px; background: var(--footer); color: var(--footer-text); }
.footer-inner { padding: 46px 0 34px; display: grid; grid-template-columns: 1.25fr .7fr .7fr 1.25fr; gap: 30px; }
.footer-brand img { max-width: 150px; max-height: 50px; width: auto; margin-bottom: 16px; }
.footer-brand p, .footer-notice p { color: rgba(234,248,255,.82); }
.footer-group { display: grid; align-content: start; gap: 8px; }
.footer-group h2, .footer-notice h2 { color: #fff; font-size: 17px; }
.footer-group a { color: rgba(234,248,255,.86); }
.footer-group a:hover { color: #fff; }
.footer-bottom { padding: 16px 0 24px; border-top: 1px solid rgba(234,248,255,.14); color: rgba(234,248,255,.72); font-size: 14px; }
@media (max-width: 1180px) {
    body { padding-top: 70px; }
    .site-header { height: 70px; }
    .desktop-nav { display: none; }
    .menu-toggle { display: block; }
    .header-inner { width: min(100% - 24px, 960px); }
    .site-logo img { max-height: 44px; max-width: 140px; }
    .site-main, .page-main, .site-footer .footer-inner, .footer-bottom, .carousel { width: min(100% - 24px, 960px); }
    .hero-panel, .split-section { grid-template-columns: 1fr; }
    .split-section.reverse > :first-child, .split-section.reverse > :last-child { order: initial; }
    .content-grid.four { grid-template-columns: repeat(2,minmax(0,1fr)); }
    .footer-inner { grid-template-columns: repeat(2,minmax(0,1fr)); }
}
@media (max-width: 760px) {
    .page-main { padding-top: 20px; }
    .header-actions .main-btn { min-height: 40px; padding: 0 18px; }
    .section-head { display: block; }
    .content-grid, .content-grid.three, .content-grid.four, .review-grid, .compliance-bar, .footer-inner { grid-template-columns: 1fr; }
    .hero-panel, .section-shell { border-radius: 22px; padding: 22px; }
    .carousel { margin-top: 18px; border-radius: 20px; }
    .carousel-track { height: clamp(180px, 56vw, 340px); }
    .carousel-arrow { width: 38px; height: 38px; font-size: 24px; }
    .carousel-arrow.prev { left: 10px; }
    .carousel-arrow.next { right: 10px; }
}
@media (max-width: 430px) {
    .site-logo img { max-width: 112px; max-height: 38px; }
    .header-actions { gap: 7px; }
    .header-actions .main-btn { padding: 0 14px; min-height: 38px; }
    .menu-toggle { width: 40px; height: 40px; }
    .hero-panel, .section-shell, .info-card, .feature-card, .category-card, .product-card, .review-card, .faq-item, .notice-panel { border-radius: 17px; }
}