* { box-sizing: border-box; }
:root {
    --red: #C90000;
    --red-dark: #A80000;
    --red-soft: rgba(201,0,0,.08);
    --text: #1F2329;
    --muted: #5D6673;
    --light: #F6F7F9;
    --section: #F1F3F6;
    --border: rgba(201,0,0,.12);
    --shadow: 0 12px 30px rgba(18,28,45,.08);
    --radius: 18px;
}
html { scroll-behavior: smooth; }
body {
    margin: 0;
    background: #FFFFFF;
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
    line-height: 1.75;
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
button { font: inherit; }
.container { width: min(1280px, calc(100% - 36px)); margin-inline: auto; }
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255,255,255,.96);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(201,0,0,.08);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    min-height: 74px;
}
.logo { flex: 0 0 auto; display: inline-flex; align-items: center; }
.logo img { max-height: 52px; width: auto; display: block; }
.nav-core { display: flex; align-items: center; justify-content: center; gap: 18px; white-space: nowrap; flex-wrap: nowrap; flex: 1; }
.nav-core a { color: var(--text); padding: 10px 4px; position: relative; font-weight: 700; }
.nav-core a:hover, .nav-core a.active { color: var(--red); }
.nav-core a.active::after { content: ""; position: absolute; left: 0; right: 0; bottom: -10px; height: 3px; border-radius: 999px; background: var(--red); }
.main-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 10px 24px; background: linear-gradient(180deg, #F12B2B 0%, #C90000 55%, #A80000 100%); color: #fff; border-radius: 999px; font-weight: 800; box-shadow: 0 8px 18px rgba(201,0,0,.2); transition: transform .2s ease, box-shadow .2s ease; }
.main-btn:hover { transform: translateY(-1px); box-shadow: 0 12px 22px rgba(201,0,0,.24); }
.header-register { flex: 0 0 auto; }
.menu-toggle { display: none; width: 42px; height: 42px; border: 0; border-radius: 12px; background: var(--light); padding: 10px; cursor: pointer; }
.menu-toggle span { display: block; height: 2px; background: var(--text); margin: 5px 0; border-radius: 3px; }
.site-layout { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 28px; padding-top: 24px; padding-bottom: 48px; }
.site-main { min-width: 0; }
.side-category { position: sticky; top: 96px; align-self: start; max-height: calc(100vh - 118px); overflow-y: auto; background: #fff; border: 1px solid rgba(201,0,0,.10); border-radius: 18px; box-shadow: var(--shadow); padding: 12px; }
.side-title { padding: 10px 12px 12px; color: var(--red); font-weight: 900; border-bottom: 1px solid var(--border); }
.side-category nav { display: grid; gap: 4px; padding-top: 8px; }
.side-category a { color: var(--text); border-radius: 12px; padding: 8px 12px; font-size: 14px; }
.side-category a:hover, .side-category a.active { color: var(--red); background: var(--red-soft); font-weight: 800; }
.banner-slider { width: 100%; margin: 0 auto 34px; border-radius: 22px; background: #F7F8FA; box-shadow: var(--shadow); overflow: hidden; position: relative; min-height: 260px; max-height: 360px; aspect-ratio: 16/5.5; }
.slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity .45s ease; }
.slide.active { opacity: 1; visibility: visible; }
.slide img { width: 100%; height: 100%; object-fit: contain; background: #F7F8FA; display: block; }
.slider-prev, .slider-next { position: absolute; top: 50%; transform: translateY(-50%); width: 44px; height: 44px; border: 0; border-radius: 50%; background: rgba(17,21,28,.56); color: #fff; font-size: 28px; line-height: 1; cursor: pointer; z-index: 2; }
.slider-prev { left: 16px; }
.slider-next { right: 16px; }
.slider-dots { position: absolute; left: 50%; bottom: 14px; transform: translateX(-50%); display: flex; gap: 8px; z-index: 2; }
.slider-dot { width: 10px; height: 10px; border: 0; border-radius: 50%; padding: 0; background: rgba(255,255,255,.65); cursor: pointer; }
.slider-dot.active { width: 24px; border-radius: 999px; background: #fff; }
.banner-caption, .banner-text, .slide-title, .slide-desc, .slide-content, .slide-card, .banner-card { display: none !important; }
.hero-intro, .page-hero { background: linear-gradient(135deg, #fff 0%, #fff 58%, #fff1f1 100%); border: 1px solid var(--border); border-radius: 24px; padding: clamp(26px, 4vw, 48px); box-shadow: var(--shadow); margin-bottom: 28px; }
.eyebrow { display: inline-block; color: var(--red); font-size: 13px; font-weight: 900; letter-spacing: .08em; margin-bottom: 8px; }
h1, h2, h3, .section-title { color: var(--red); line-height: 1.35; margin-top: 0; }
h1 { font-size: clamp(30px, 4vw, 48px); margin-bottom: 14px; }
h2 { font-size: clamp(23px, 3vw, 32px); }
h3 { font-size: 19px; }
p { margin: 0 0 14px; }
.lead { font-size: 18px; color: var(--muted); max-width: 850px; }
.section { padding: 34px 0; }
.section.alt { background: var(--light); border-radius: 24px; padding-inline: clamp(18px, 3vw, 34px); margin: 10px 0; }
.section-head { display: flex; justify-content: space-between; gap: 20px; align-items: end; margin-bottom: 20px; }
.section-head p { color: var(--muted); max-width: 680px; margin: 0; }
.grid-2, .grid-3, .grid-4 { 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, .summary-card { background: #fff; border: 1px solid rgba(201,0,0,.10); box-shadow: var(--shadow); border-radius: var(--radius); }
.card, .info-card, .review-card, .summary-card { padding: 22px; }
.card p, .info-card p, .review-card p, .summary-card p { color: var(--muted); }
.zone-card { overflow: hidden; }
.zone-card .card-body { padding: 20px; }
.zone-card img, .info-card img, .content-img { max-width: 100%; width: 100%; height: 220px; object-fit: contain; background: #F7F8FA; display: block; border-radius: 14px; }
.product-card img { width: 100%; height: 170px; object-fit: contain; background: #F7F8FA; display: block; }
.text-link { color: var(--red); font-weight: 800; display: inline-flex; align-items: center; gap: 6px; }
.text-link::after { content: "→"; }
.red-summary { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 14px; background: linear-gradient(135deg, #D91313, #A70000); padding: 22px; border-radius: 22px; color: #fff; box-shadow: 0 18px 35px rgba(201,0,0,.2); }
.red-summary .summary-item { padding: 14px; border: 1px solid rgba(255,255,255,.2); border-radius: 15px; background: rgba(255,255,255,.08); }
.red-summary strong { display: block; margin-bottom: 8px; font-size: 17px; }
.split { display: grid; grid-template-columns: 1.1fr .9fr; gap: 28px; align-items: center; }
.split.reverse { grid-template-columns: .9fr 1.1fr; }
.split .content-img { height: 270px; }
.notice { border-left: 4px solid var(--red); background: #FFF5F5; padding: 18px 20px; border-radius: 0 14px 14px 0; color: #4E2530; }
.tag-list { display: flex; flex-wrap: wrap; gap: 10px; margin: 16px 0; }
.tag-list span { background: var(--red-soft); color: var(--red); border: 1px solid var(--border); border-radius: 999px; padding: 7px 13px; font-weight: 800; font-size: 14px; }
.review-card strong { color: var(--text); }
.review-card small { color: #8A93A0; display: block; margin-top: 10px; }
.faq-list { display: grid; gap: 14px; }
.faq-item { padding: 20px 22px; }
.faq-item h3 { margin-bottom: 8px; }
.faq-item p { color: var(--muted); margin-bottom: 0; }
.page-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 22px; }
.outline-btn { display: inline-flex; min-height: 44px; align-items: center; justify-content: center; padding: 10px 22px; border: 1px solid var(--red); color: var(--red); border-radius: 999px; font-weight: 800; }
.breadcrumb { color: #8A93A0; font-size: 14px; margin-bottom: 12px; }
.breadcrumb a { color: var(--red); }
.list-check { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.list-check li { position: relative; padding-left: 24px; color: var(--muted); }
.list-check li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--red); font-weight: 900; }
.table-wrap { overflow-x: auto; }
.info-table { width: 100%; border-collapse: collapse; background: #fff; border-radius: 16px; overflow: hidden; box-shadow: var(--shadow); }
.info-table th, .info-table td { text-align: left; padding: 15px; border-bottom: 1px solid #ECEFF3; }
.info-table th { color: var(--red); background: #FFF6F6; }
.site-footer { background: #11151C; color: #E7ECF3; padding-top: 46px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.4fr; gap: 34px; }
.footer-grid h2 { color: #fff; font-size: 17px; margin-bottom: 14px; }
.footer-grid a { display: block; color: #D8DEE8; margin: 8px 0; }
.footer-grid a:hover { color: #fff; }
.footer-brand p, .footer-note p { color: #AEB7C4; }
.footer-logo { display: inline-block !important; margin-bottom: 14px !important; }
.footer-logo img { height: 48px; width: auto; display: block; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.10); margin-top: 32px; padding: 18px 0 24px; color: #98A2B1; font-size: 14px; }
.mobile-drawer { position: fixed; inset: 0 auto 0 0; width: min(84vw, 320px); background: #fff; z-index: 1300; transform: translateX(-104%); transition: transform .25s ease; box-shadow: 20px 0 40px rgba(0,0,0,.16); overflow-y: auto; }
.mobile-drawer.open { transform: translateX(0); }
.drawer-head { position: sticky; top: 0; background: #fff; display: flex; align-items: center; justify-content: space-between; padding: 16px; border-bottom: 1px solid #ECEFF3; }
.drawer-logo img { max-height: 46px; width: auto; display: block; }
.drawer-close { width: 40px; height: 40px; border: 0; border-radius: 12px; background: var(--light); font-size: 26px; cursor: pointer; }
.drawer-nav { display: grid; padding: 12px; gap: 4px; }
.drawer-nav a { padding: 11px 14px; border-radius: 12px; }
.drawer-nav a:hover, .drawer-nav a.active { color: var(--red); background: var(--red-soft); font-weight: 800; }
.drawer-overlay { position: fixed; inset: 0; background: rgba(15,18,24,.5); z-index: 1200; opacity: 0; transition: opacity .22s ease; }
.drawer-overlay.show { opacity: 1; }
body.drawer-open { overflow: hidden; }
.mobile-bottom-nav { display: none; }

@media (max-width: 1100px) {
    .site-layout { grid-template-columns: 190px minmax(0, 1fr); gap: 20px; }
    .nav-core { gap: 12px; }
    .grid-4 { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
    .footer-note { grid-column: 1 / -1; }
}
@media (max-width: 900px) {
    body { padding-bottom: 72px; }
    .container { width: min(100% - 24px, 760px); }
    .site-header .container { width: calc(100% - 18px); }
    .header-inner { min-height: 64px; gap: 10px; }
    .menu-toggle { display: block; flex: 0 0 auto; }
    .logo { position: absolute; left: 50%; transform: translateX(-50%); }
    .logo img { max-height: 44px; max-width: 132px; }
    .nav-core { display: none; }
    .header-register { min-height: 38px; padding: 8px 16px; font-size: 14px; margin-left: auto; }
    .site-layout { display: block; padding-top: 16px; }
    .side-category { display: none; }
    .banner-slider { min-height: 150px; max-height: 210px; aspect-ratio: 16/7.5; margin-bottom: 22px; border-radius: 16px; }
    .slider-prev, .slider-next { width: 36px; height: 36px; font-size: 22px; }
    .slider-prev { left: 10px; }
    .slider-next { right: 10px; }
    .hero-intro, .page-hero { padding: 24px 20px; border-radius: 18px; }
    h1 { font-size: 31px; }
    .grid-3 { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .split, .split.reverse { grid-template-columns: 1fr; }
    .split .content-img { height: 220px; }
    .red-summary { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-brand { grid-column: 1 / -1; }
    .mobile-bottom-nav { position: fixed; left: 0; right: 0; bottom: 0; display: grid; grid-template-columns: repeat(4,1fr); background: rgba(255,255,255,.97); border-top: 1px solid var(--border); box-shadow: 0 -8px 24px rgba(18,28,45,.10); z-index: 1100; padding-bottom: env(safe-area-inset-bottom); }
    .mobile-bottom-nav a { min-height: 62px; display: flex; align-items: center; justify-content: center; color: var(--muted); font-size: 14px; font-weight: 800; }
    .mobile-bottom-nav a.active { color: var(--red); background: var(--red-soft); }
}
@media (max-width: 620px) {
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .red-summary { grid-template-columns: 1fr; }
    .section { padding: 26px 0; }
    .section.alt { padding-inline: 16px; }
    .section-head { display: block; }
    .zone-card img, .info-card img, .content-img, .split .content-img { height: 190px; }
    .product-card img { height: 155px; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-brand, .footer-note { grid-column: auto; }
    .slider-dots { bottom: 9px; }
    .page-actions { display: grid; }
    .page-actions a { width: 100%; }
}