* { box-sizing: border-box; }
:root {
    --red: #C90000;
    --red-dark: #A80000;
    --red-soft: rgba(201, 0, 0, 0.08);
    --text: #1F2329;
    --muted: #5D6673;
    --subtle: #8A93A0;
    --line: rgba(201, 0, 0, 0.12);
    --panel: #FFFFFF;
    --soft: #F6F7F9;
    --section: #F1F3F6;
    --shadow: 0 12px 30px rgba(18, 28, 45, 0.08);
    --radius: 18px;
}
html { scroll-behavior: smooth; }
body {
    margin: 0;
    padding-top: 74px;
    background: #FFFFFF;
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    line-height: 1.75;
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
button, input, textarea, select { font: inherit; }
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(201, 0, 0, 0.08);
}
.header-inner {
    width: min(1320px, calc(100% - 32px));
    min-height: 74px;
    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; display: block; }
.nav-core { display: flex; align-items: center; justify-content: center; gap: 10px; white-space: nowrap; flex-wrap: nowrap; }
.nav-core a { color: var(--text); background: var(--soft); border-radius: 999px; padding: 10px 16px; font-weight: 700; line-height: 1; transition: .2s ease; }
.nav-core a:hover, .nav-core a.active { color: var(--red); background: var(--red-soft); }
.main-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 10px 22px;
    border-radius: 999px;
    background: linear-gradient(180deg, #F12B2B 0%, #C90000 55%, #A80000 100%);
    color: #FFFFFF;
    font-weight: 800;
    box-shadow: 0 8px 18px rgba(201, 0, 0, .22);
    transition: transform .2s ease, box-shadow .2s ease;
}
.main-btn:hover { transform: translateY(-1px); box-shadow: 0 11px 24px rgba(201, 0, 0, .28); }
.header-register { flex: 0 0 auto; }
.menu-toggle { display: none; width: 42px; height: 42px; border: 0; border-radius: 12px; background: var(--soft); padding: 10px; cursor: pointer; }
.menu-toggle span { display: block; height: 2px; margin: 5px 0; background: var(--text); border-radius: 2px; }
.site-shell {
    width: min(1320px, calc(100% - 32px));
    margin: 0 auto;
    display: grid;
    grid-template-columns: 210px minmax(0, 1fr);
    gap: 28px;
    align-items: start;
}
.side-category {
    position: sticky;
    top: 96px;
    margin: 24px 0 42px;
    max-height: calc(100vh - 120px);
    overflow: auto;
    background: #FFFFFF;
    border: 1px solid rgba(201, 0, 0, 0.10);
    border-radius: 18px;
    box-shadow: var(--shadow);
    padding: 14px;
}
.side-title { padding: 6px 10px 10px; color: var(--red); font-weight: 900; font-size: 15px; }
.side-category nav { display: grid; gap: 4px; }
.side-category a { color: var(--text); border-radius: 12px; padding: 8px 10px; font-size: 14px; line-height: 1.45; }
.side-category a:hover, .side-category a.active { color: var(--red); background: var(--red-soft); }
.site-main { min-width: 0; padding-bottom: 30px; }
.banner-slider {
    width: 100%;
    margin: 24px auto 34px;
    border-radius: 22px;
    background: #F7F8FA;
    box-shadow: var(--shadow);
    overflow: hidden;
    position: relative;
    min-height: 260px;
    height: clamp(260px, 31vw, 360px);
    max-height: 360px;
}
.banner-track, .banner-slide { width: 100%; height: 100%; }
.banner-slide { position: absolute; inset: 0; opacity: 0; pointer-events: none; transition: opacity .45s ease; }
.banner-slide.active { opacity: 1; pointer-events: auto; }
.banner-slider img { width: 100%; height: 100%; object-fit: contain; background: #F7F8FA; display: block; }
.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;
    margin-top: -22px;
    border: 0;
    border-radius: 50%;
    background: rgba(17, 21, 28, .64);
    color: #FFFFFF;
    font-size: 28px;
    cursor: pointer;
}
.slider-prev { left: 16px; }
.slider-next { right: 16px; }
.slider-dots { position: absolute; left: 50%; bottom: 14px; z-index: 3; display: flex; gap: 9px; transform: translateX(-50%); }
.slider-dot { width: 10px; height: 10px; border: 0; padding: 0; border-radius: 50%; background: rgba(255,255,255,.62); box-shadow: 0 1px 6px rgba(0,0,0,.24); cursor: pointer; }
.slider-dot.active { background: var(--red); }
.page-hero {
    margin: 24px 0 28px;
    padding: clamp(28px, 5vw, 58px);
    border-radius: 24px;
    background: linear-gradient(135deg, #FFFFFF 0%, #F7F8FA 58%, #FFF0F0 100%);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
}
.page-hero .eyebrow { color: var(--red); font-weight: 900; letter-spacing: .08em; }
h1, h2, h3, .section-title { color: var(--red); line-height: 1.28; }
h1 { margin: 8px 0 16px; font-size: clamp(30px, 4.5vw, 52px); }
h2 { font-size: clamp(24px, 3vw, 34px); margin: 0 0 14px; }
h3 { font-size: 19px; margin: 0 0 8px; }
p { margin: 0 0 14px; }
.lead { max-width: 850px; color: var(--muted); font-size: 18px; }
.hero-actions, .inline-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 20px; }
.text-link { display: inline-flex; align-items: center; min-height: 42px; padding: 9px 16px; border: 1px solid var(--line); border-radius: 999px; color: var(--red); font-weight: 800; background: #FFFFFF; }
.section { padding: 38px 0; }
.section.soft { margin: 20px 0; padding: 34px; border-radius: 22px; background: var(--soft); }
.section-head { display: flex; justify-content: space-between; gap: 20px; align-items: end; margin-bottom: 20px; }
.section-head p { max-width: 720px; color: var(--muted); margin: 0; }
.grid-2, .grid-3, .grid-4 { display: grid; gap: 18px; }
.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 {
    background: #FFFFFF;
    border: 1px solid rgba(201, 0, 0, 0.10);
    box-shadow: var(--shadow);
    border-radius: 18px;
}
.card, .info-card, .review-card { padding: 22px; }
.zone-card { overflow: hidden; }
.zone-card .card-body { padding: 20px; }
.zone-card img, .info-card img, .content-img { max-width: 100%; height: auto; max-height: 230px; object-fit: contain; display: block; margin: 0 auto; }
.product-card img { width: 100%; height: 170px; object-fit: contain; background: #F7F8FA; display: block; }
.card p, .zone-card p, .info-card p, .review-card p { color: var(--muted); }
.card-link { color: var(--red); font-weight: 800; }
.summary-strip { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; overflow: hidden; border-radius: 20px; background: #D83A3A; box-shadow: var(--shadow); }
.summary-item { padding: 26px; color: #FFFFFF; background: linear-gradient(155deg, #DC2525, #B50000); }
.summary-item h3 { color: #FFFFFF; }
.summary-item p { color: rgba(255,255,255,.86); margin: 0; }
.quick-links { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.quick-link { padding: 18px; border: 1px solid var(--line); border-radius: 16px; background: #FFFFFF; transition: .2s ease; }
.quick-link:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.quick-link strong { display: block; color: var(--red); margin-bottom: 6px; }
.quick-link span { color: var(--muted); font-size: 14px; }
.media-row { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(260px, .9fr); gap: 24px; align-items: center; }
.media-row.reverse { grid-template-columns: minmax(260px, .9fr) minmax(0, 1.1fr); }
.media-row.reverse .media-copy { order: 2; }
.media-row.reverse .media-visual { order: 1; }
.media-visual { background: #F7F8FA; border-radius: 18px; border: 1px solid rgba(31,35,41,.06); padding: 18px; min-height: 220px; display: grid; place-items: center; }
.media-visual img { width: 100%; max-height: 280px; object-fit: contain; }
.horizontal-cards { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(230px, 28%); gap: 16px; overflow-x: auto; padding: 4px 2px 18px; scroll-snap-type: x mandatory; }
.horizontal-cards .zone-card { scroll-snap-align: start; }
.notice { padding: 20px 22px; border-left: 4px solid var(--red); border-radius: 12px; background: #FFF5F5; color: var(--muted); }
.list-clean { padding: 0; margin: 0; list-style: none; display: grid; gap: 10px; }
.list-clean li { position: relative; padding-left: 20px; color: var(--muted); }
.list-clean li::before { content: ""; position: absolute; left: 0; top: .72em; width: 8px; height: 8px; border-radius: 50%; background: var(--red); }
.review-card { position: relative; }
.review-card::before { content: "“"; position: absolute; right: 16px; top: 4px; color: rgba(201,0,0,.12); font-size: 64px; line-height: 1; font-weight: 900; }
.review-card strong { color: var(--text); }
.faq-list { display: grid; gap: 12px; }
details { border: 1px solid var(--line); border-radius: 14px; background: #FFFFFF; padding: 16px 18px; }
summary { cursor: pointer; color: var(--text); font-weight: 800; }
details p { color: var(--muted); margin: 12px 0 0; }
.contact-form { display: grid; gap: 14px; }
.contact-form label { display: grid; gap: 7px; font-weight: 800; color: var(--text); }
.contact-form input, .contact-form select, .contact-form textarea { width: 100%; border: 1px solid rgba(31,35,41,.15); border-radius: 12px; padding: 12px 14px; background: #FFFFFF; color: var(--text); }
.contact-form textarea { min-height: 130px; resize: vertical; }
.site-footer { margin-top: 40px; background: #11151C; color: #E7ECF3; }
.footer-grid { width: min(1320px, calc(100% - 32px)); margin: 0 auto; display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 32px; padding: 52px 0 36px; }
.footer-grid h2 { color: #FFFFFF; font-size: 18px; }
.footer-grid a { display: block; color: #D7DDE5; margin: 8px 0; }
.footer-grid p { color: #AEB8C6; }
.footer-brand img { max-height: 52px; width: auto; margin-bottom: 14px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); text-align: center; color: #9DA8B7; padding: 16px; font-size: 14px; }
.mobile-drawer { position: fixed; inset: 0 auto 0 0; z-index: 1200; width: min(84vw, 320px); padding: 16px; background: #FFFFFF; box-shadow: 18px 0 40px rgba(0,0,0,.18); transform: translateX(-105%); transition: transform .22s ease; overflow-y: auto; }
.mobile-drawer.open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-bottom: 12px; border-bottom: 1px solid rgba(31,35,41,.08); }
.drawer-logo img { max-height: 46px; width: auto; }
.drawer-close { width: 40px; height: 40px; border: 0; border-radius: 50%; background: var(--soft); color: var(--text); font-size: 28px; cursor: pointer; }
.drawer-nav { display: grid; gap: 4px; padding: 14px 0; }
.drawer-nav a { padding: 10px 12px; border-radius: 10px; }
.drawer-nav a.active, .drawer-nav a:hover { color: var(--red); background: var(--red-soft); }
.drawer-overlay { position: fixed; inset: 0; z-index: 1100; background: rgba(17,21,28,.48); opacity: 0; transition: opacity .22s ease; }
.drawer-overlay.show { opacity: 1; }
body.drawer-open { overflow: hidden; }
.mobile-bottom-nav { display: none; }

@media (max-width: 1120px) {
    .site-shell { grid-template-columns: 180px minmax(0, 1fr); gap: 20px; }
    .nav-core a { padding: 9px 13px; }
    .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 920px) {
    body { padding-top: 66px; }
    .nav-core, .side-category { display: none; }
    .menu-toggle { display: block; flex: 0 0 auto; }
    .header-inner { min-height: 66px; width: min(100% - 20px, 1320px); gap: 10px; }
    .logo { margin-right: auto; margin-left: auto; }
    .logo img { max-height: 44px; }
    .header-register { min-height: 38px; padding: 8px 16px; }
    .site-shell { width: min(100% - 20px, 1320px); display: block; }
    .site-main { padding-bottom: 82px; }
    .summary-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .quick-links, .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .media-row, .media-row.reverse { grid-template-columns: 1fr; }
    .media-row.reverse .media-copy, .media-row.reverse .media-visual { order: initial; }
    .horizontal-cards { grid-auto-columns: minmax(230px, 70%); }
    .mobile-bottom-nav {
        position: fixed;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 900;
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        background: #FFFFFF;
        border-top: 1px solid rgba(31,35,41,.12);
        padding-bottom: env(safe-area-inset-bottom);
        box-shadow: 0 -8px 24px rgba(18,28,45,.08);
    }
    .mobile-bottom-nav a { min-height: 58px; display: grid; place-items: center; align-content: center; gap: 1px; color: var(--muted); font-size: 12px; }
    .mobile-bottom-nav span { font-weight: 900; line-height: 1; }
    .mobile-bottom-nav a.active { color: var(--red); }
}
@media (max-width: 640px) {
    body { padding-top: 62px; }
    .header-inner { min-height: 62px; }
    .logo img { max-height: 40px; }
    .main-btn { padding: 8px 15px; min-height: 38px; }
    .banner-slider { min-height: 150px; height: 48vw; max-height: 210px; margin: 16px 0 24px; border-radius: 16px; }
    .slider-arrow { width: 36px; height: 36px; margin-top: -18px; font-size: 22px; }
    .slider-prev { left: 8px; }
    .slider-next { right: 8px; }
    .page-hero { margin: 16px 0 22px; padding: 24px 20px; border-radius: 18px; }
    .lead { font-size: 16px; }
    .section { padding: 28px 0; }
    .section.soft { padding: 24px 18px; border-radius: 18px; }
    .section-head { display: block; }
    .grid-2, .grid-3, .grid-4, .quick-links, .summary-strip { grid-template-columns: 1fr; }
    .card, .info-card, .review-card { padding: 18px; }
    .zone-card img, .info-card img, .content-img { max-height: 190px; }
    .product-card img { height: 145px; }
    .media-visual { min-height: 170px; padding: 12px; }
    .media-visual img { max-height: 210px; }
    .horizontal-cards { grid-auto-columns: minmax(220px, 88%); }
    .footer-grid { grid-template-columns: 1fr; gap: 22px; padding: 38px 0 26px; }
}