*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
:root {
    --bg-page: #f7f8fa; --bg-card: #ffffff; --bg-alt: #eef1f6;
    --brand: #2b5ea7; --brand-dark: #234d8a; --brand-light: #eef3fa;
    --accent: #e8873a; --accent-dark: #d4752e;
    --text-primary: #1e2a3a; --text-secondary: #6b7b8d;
    --border: #e4e8ed;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.04); --shadow-md: 0 4px 12px rgba(43,94,167,0.08); --shadow-lg: 0 8px 30px rgba(43,94,167,0.1);
    --radius-card: 12px; --radius-btn: 8px; --radius-tag: 6px; --radius-img: 12px;
    --max-width: 1400px; --section-gap: 100px;
}
html { scroll-behavior: smooth; }
body { font-family: 'Noto Sans SC', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif; font-size: 16px; line-height: 1.8; color: var(--text-primary); background: #ffffff; -webkit-font-smoothing: antialiased; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 40px; }

/* ===== HEADER ===== */
.header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: #ffffff;
    border-bottom: 1px solid var(--border);
    transition: box-shadow 0.3s ease;
}
.header.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.06); }
.header-inner { max-width: var(--max-width); margin: 0 auto; padding: 0 40px; height: 72px; display: flex; align-items: center; justify-content: space-between; }
.logo { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.logo img { height: 40px; width: auto; }
.nav { display: flex; align-items: center; gap: 36px; }
.nav a { text-decoration: none; color: var(--text-primary); font-size: 15px; font-weight: 400; transition: color 0.2s; }
.nav a:hover { color: var(--brand); }
.nav a.active { color: var(--brand); font-weight: 500; }
.lang-switch { display: flex; align-items: center; gap: 8px; margin-left: 12px; padding-left: 20px; border-left: 1px solid var(--border); }
.lang-switch a { font-size: 13px; color: var(--text-secondary); text-decoration: none; transition: color 0.2s; }
.lang-switch a.active { color: var(--brand); font-weight: 500; }
.lang-switch a:hover { color: var(--brand); }

/* ===== HERO (首页专用) ===== */
.hero {
    position: relative; height: 100vh; min-height: 500px;
    overflow: hidden;
    background: #1a2030;
}
.hero-bg {
    position: absolute; inset: 0;
    overflow: hidden;
}
.hero-video {
    position: absolute; top: 50%; left: 50%; min-width: 100%; min-height: 100%; width: auto; height: auto; transform: translate(-50%, -50%); object-fit: cover; z-index: 0;
}
.hero-bg::after { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse at 50% 40%, transparent 0%, rgba(10,15,25,0.3) 100%); z-index: 1; pointer-events: none; }
.hero-inner { position: relative; z-index: 2; text-align: center; max-width: 800px; padding: 0 40px; }
.hero-tag { display: inline-block; font-size: 13px; font-weight: 500; color: rgba(255,255,255,0.6); letter-spacing: 3px; text-transform: uppercase; margin-bottom: 32px; font-family: 'Inter', sans-serif; }
.hero h1 { font-size: 56px; font-weight: 700; line-height: 1.3; letter-spacing: -0.5px; color: #fff; margin-bottom: 20px; }
.hero-desc { font-size: 18px; line-height: 1.8; color: rgba(255,255,255,0.7); margin-bottom: 44px; max-width: 560px; margin-left: auto; margin-right: auto; }
.hero-btns { display: flex; gap: 16px; align-items: center; justify-content: center; }
.hero-scroll { position: absolute; bottom: 36px; left: 50%; transform: translateX(-50%); z-index: 2; display: flex; flex-direction: column; align-items: center; gap: 8px; color: rgba(255,255,255,0.4); font-size: 12px; letter-spacing: 1px; animation: scrollBounce 2s ease-in-out infinite; }
.hero-scroll svg { width: 24px; height: 38px; }
@keyframes scrollBounce { 0%, 100% { transform: translateX(-50%) translateY(0); } 50% { transform: translateX(-50%) translateY(8px); } }

/* ===== PAGE HERO (内页专用) ===== */
.page-hero { margin-top: 72px; padding: 80px 0; background: var(--bg-alt); text-align: center; }
.page-hero h1 { font-size: 42px; font-weight: 700; color: var(--brand); letter-spacing: -0.5px; margin-bottom: 12px; }
.page-hero p { font-size: 16px; color: var(--text-secondary); max-width: 560px; margin: 0 auto; }

/* ===== SECTION COMMON ===== */
.section { padding: var(--section-gap) 0; }
.section-alt { background: var(--bg-alt); }
.section-header { text-align: center; margin-bottom: 60px; }
.section-title { font-size: 36px; font-weight: 700; letter-spacing: -0.5px; color: var(--brand); margin-bottom: 12px; }
.section-title-label { display: inline-block; font-size: 36px; font-weight: 700; letter-spacing: -0.5px; color: var(--brand); background: none; padding: 0; border-radius: 0; margin-bottom: 28px; }
.about-content .section-title-label { text-align: left; }
.section-subtitle { font-size: 16px; color: var(--text-secondary); max-width: 560px; margin: 0 auto; }

/* ===== BUTTONS ===== */
.btn-primary { display: inline-flex; align-items: center; gap: 8px; padding: 14px 32px; background: var(--brand); color: #fff; font-size: 15px; font-weight: 500; border: none; border-radius: var(--radius-btn); cursor: pointer; text-decoration: none; transition: all 0.25s ease; }
.btn-primary:hover { background: var(--brand-dark); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-secondary { display: inline-flex; align-items: center; gap: 8px; padding: 14px 32px; background: transparent; color: var(--brand); font-size: 15px; font-weight: 500; border: 1.5px solid var(--brand); border-radius: var(--radius-btn); cursor: pointer; text-decoration: none; transition: all 0.25s ease; }
.btn-secondary:hover { background: var(--brand-light); transform: translateY(-1px); }
.btn-ghost { display: inline-flex; align-items: center; gap: 8px; padding: 14px 36px; background: transparent; color: #fff; font-size: 15px; font-weight: 500; border: 1.5px solid rgba(255,255,255,0.5); border-radius: 30px; cursor: pointer; text-decoration: none; transition: all 0.3s ease; }
.btn-ghost:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.8); }

/* ===== ABOUT ===== */
.about-inner { display: flex; align-items: center; gap: 80px; }
.about-content { flex: 0 0 50%; }
.about-image { flex: 0 0 50%; }
.about-image img { width: 100%; border-radius: var(--radius-img); box-shadow: var(--shadow-md); object-fit: cover; aspect-ratio: 4/3; }
.about-text { font-size: 15px; line-height: 2; color: var(--text-secondary); margin-bottom: 16px; }
.about-stats { display: flex; gap: 40px; margin-top: 36px; padding-top: 32px; border-top: 1px solid var(--border); }
.stat-item { text-align: left; }
.stat-number { font-size: 40px; font-weight: 700; color: var(--brand); line-height: 1; font-family: 'Inter', sans-serif; }
.stat-number .num-value { display: inline; font-size: 40px; font-weight: 700; }
.stat-number span:not(.num-value) { font-size: 16px; font-weight: 500; }
.stat-label { font-size: 13px; color: var(--text-secondary); margin-top: 6px; }

/* ===== PRODUCTS ===== */
.products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.product-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-card); overflow: hidden; transition: all 0.3s ease; cursor: pointer; position: relative; }
.product-card:hover { border-color: var(--brand); transform: translateY(-3px); box-shadow: var(--shadow-md); }
.product-card-img { width: 100%; aspect-ratio: 1/1; overflow: hidden; background: #fff; }
.product-card-img img { width: 100%; height: 100%; object-fit: contain; transition: transform 0.4s ease; }
.product-card:hover .product-card-img img { transform: scale(1.05); }
.product-card-body { padding: 24px; }
.product-number { font-size: 12px; font-weight: 600; color: var(--brand); font-family: 'Inter', sans-serif; letter-spacing: 1px; margin-bottom: 8px; }
.product-name { font-size: 18px; font-weight: 600; color: var(--text-primary); margin-bottom: 8px; }
.product-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }
.product-card-arrow { position: absolute; top: 20px; right: 20px; width: 36px; height: 36px; background: rgba(255,255,255,0.9); border-radius: 50%; display: flex; align-items: center; justify-content: center; opacity: 0; transform: translate(-8px, 8px); transition: all 0.3s ease; }
.product-card:hover .product-card-arrow { opacity: 1; transform: translate(0, 0); }
.product-card-arrow svg { width: 16px; height: 16px; color: var(--brand); }
.product-card-btn { margin-top: 12px; font-size: 14px; color: var(--brand); font-weight: 500; display: inline-flex; align-items: center; cursor: pointer; }
.products-cta { text-align: center; margin-top: 48px; }

/* ===== CASES (首页轮播) ===== */
.cases-section { padding-bottom: var(--section-gap); }
.cases-fullwidth { position: relative; overflow: hidden; width: 100vw; margin-left: calc(-50vw + 50%); padding: 0 0 60px; }
.cases-viewport { overflow: hidden; width: 100vw; }
.cases-track { display: flex; gap: 10px; transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94); }
.case-slide { min-width: 70vw; width: 70vw; position: relative; aspect-ratio: 21/9; overflow: hidden; cursor: pointer; flex-shrink: 0; }
.case-slide-bg { position: absolute; inset: 0; background-size: cover; background-position: center; transition: transform 0.6s ease; }
.case-slide:hover .case-slide-bg { transform: scale(1.03); }
.case-slide-overlay { position: absolute; inset: 0; background: rgba(0,0,0,0.35); }
.case-slide-content { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); text-align: center; color: #fff; z-index: 2; }
.case-slide-title { font-size: 30px; font-weight: 700; margin-bottom: 16px; letter-spacing: -0.3px; }
.case-slide-divider { width: 32px; height: 2px; background: rgba(255,255,255,0.6); margin: 0 auto 16px; }
.case-slide-tag { display: inline-block; font-size: 14px; font-weight: 400; color: rgba(255,255,255,0.85); letter-spacing: 0.5px; }
.cases-nav-btn { position: absolute; top: 50%; transform: translateY(-50%); width: 44px; height: 44px; border-radius: 50%; border: 1.5px solid rgba(255,255,255,0.5); background: rgba(255,255,255,0.1); backdrop-filter: blur(4px); color: #fff; display: flex; align-items: center; justify-content: center; cursor: pointer; transition: all 0.3s ease; z-index: 10; }
.cases-nav-btn:hover { background: rgba(255,255,255,0.25); border-color: rgba(255,255,255,0.8); }
.cases-nav-btn svg { width: 18px; height: 18px; }
.cases-nav-prev { left: 24px; }
.cases-nav-next { right: 24px; }
.cases-dots { display: flex; justify-content: center; gap: 8px; margin-top: 32px; }
.cases-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--border); border: none; cursor: pointer; transition: all 0.3s ease; padding: 0; }
.cases-dot.active { background: var(--brand); width: 24px; border-radius: 4px; }
.cases-cta { text-align: center; margin-top: 48px; }

/* ===== CASES (内页网格) ===== */
.cases-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.case-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-card); overflow: hidden; transition: all 0.3s ease; }
.case-card:hover { border-color: var(--brand); box-shadow: var(--shadow-md); transform: translateY(-3px); }
.case-card-img { width: 100%; aspect-ratio: 16/9; overflow: hidden; }
.case-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.case-card:hover .case-card-img img { transform: scale(1.05); }
.case-card-body { padding: 28px; }
.case-card-tag { display: inline-block; font-size: 12px; font-weight: 500; color: var(--brand); background: var(--brand-light); padding: 4px 12px; border-radius: 4px; margin-bottom: 12px; }
.case-card-title { font-size: 20px; font-weight: 600; color: var(--text-primary); margin-bottom: 10px; }
.case-card-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* ===== NEWS ===== */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-card); overflow: hidden; transition: all 0.3s ease; }
.news-card:hover { border-color: var(--brand); transform: translateY(-3px); box-shadow: var(--shadow-md); }
.news-card-img { width: 100%; aspect-ratio: 16/9; overflow: hidden; }
.news-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.news-card:hover .news-card-img img { transform: scale(1.05); }
.news-card-body { padding: 24px; }
.news-date { font-size: 13px; color: var(--text-secondary); font-family: 'Inter', sans-serif; margin-bottom: 10px; }
.news-title { font-size: 17px; font-weight: 600; color: var(--text-primary); line-height: 1.5; margin-bottom: 16px; transition: color 0.2s; }
.news-card:hover .news-title { color: var(--brand); }
.news-link { font-size: 14px; color: var(--brand); text-decoration: none; font-weight: 500; display: inline-flex; align-items: center; gap: 4px; transition: gap 0.2s ease; }
.news-link:hover { gap: 8px; }
.news-cta { text-align: center; margin-top: 48px; }

/* ===== FILTER BAR ===== */
.filter-bar { display: flex; justify-content: center; gap: 12px; margin-bottom: 48px; flex-wrap: wrap; }
.filter-btn { padding: 10px 24px; border: 1.5px solid var(--border); border-radius: 30px; background: var(--bg-card); color: var(--text-secondary); font-size: 14px; cursor: pointer; transition: all 0.3s ease; }
.filter-btn:hover, .filter-btn.active { border-color: var(--brand); color: var(--brand); background: var(--brand-light); }

/* ===== CERTIFICATES ===== */
.cert-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.cert-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-card); overflow: hidden; text-align: center; transition: all 0.3s ease; }
.cert-card:hover { border-color: var(--brand); box-shadow: var(--shadow-md); transform: translateY(-3px); }
.cert-card-img { width: 100%; aspect-ratio: 3/4; background: var(--bg-alt); display: flex; align-items: center; justify-content: center; }
.cert-card-img img { width: 100%; height: 100%; object-fit: cover; }
.cert-card-body { padding: 16px; }
.cert-card-name { font-size: 14px; font-weight: 600; color: var(--text-primary); }

/* ===== CERT PAGINATED ===== */
.cert-paginated { position: relative; }
.cert-viewport { overflow: hidden; }
.cert-nav { display: flex; flex-direction: row; align-items: center; justify-content: center; gap: 16px; margin-top: 32px; }
.cert-nav-btn { width: 44px; height: 44px; border-radius: 50%; border: 1.5px solid var(--border); background: var(--bg-card); display: flex; align-items: center; justify-content: center; cursor: pointer; transition: all 0.3s ease; box-shadow: var(--shadow-sm); }
.cert-nav-btn:hover:not(:disabled) { border-color: var(--brand); background: var(--brand-light); }
.cert-nav-btn:disabled { opacity: 0.35; cursor: not-allowed; }
.cert-nav-btn svg { width: 18px; height: 18px; color: var(--text-primary); }
.cert-nav-info { font-size: 14px; color: var(--text-secondary); font-weight: 500; min-width: 48px; text-align: center; }

/* ===== GALLERY PAGINATED ===== */
.gallery-paginated { position: relative; }
.gallery-viewport { overflow: hidden; }
.gallery-nav { display: flex; flex-direction: row; align-items: center; justify-content: center; gap: 16px; margin-top: 32px; }
.gallery-nav-btn { width: 44px; height: 44px; border-radius: 50%; border: 1.5px solid var(--border); background: var(--bg-card); display: flex; align-items: center; justify-content: center; cursor: pointer; transition: all 0.3s ease; box-shadow: var(--shadow-sm); }
.gallery-nav-btn:hover:not(:disabled) { border-color: var(--brand); background: var(--brand-light); }
.gallery-nav-btn:disabled { opacity: 0.35; cursor: not-allowed; }
.gallery-nav-btn svg { width: 18px; height: 18px; color: var(--text-primary); }
.gallery-nav-info { font-size: 14px; color: var(--text-secondary); font-weight: 500; min-width: 48px; text-align: center; }

/* ===== FACTORY ===== */
.factory-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.factory-card { border-radius: var(--radius-img); overflow: hidden; aspect-ratio: 4/3; }
.factory-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.factory-card:hover img { transform: scale(1.05); }

/* ===== CONTACT ===== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; }
.contact-info-list { display: flex; flex-direction: column; gap: 28px; }
.contact-info-item { display: flex; gap: 16px; align-items: flex-start; }
.contact-icon { width: 48px; height: 48px; border-radius: 12px; background: var(--brand-light); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.contact-icon svg { width: 22px; height: 22px; color: var(--brand); }
.contact-info-label { font-size: 13px; color: var(--text-secondary); margin-bottom: 4px; }
.contact-info-value { font-size: 16px; font-weight: 500; color: var(--text-primary); }
.contact-form { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-card); padding: 40px; }
.contact-form h3 { font-size: 22px; font-weight: 700; color: var(--brand); margin-bottom: 28px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; font-weight: 500; color: var(--text-primary); margin-bottom: 8px; }
.form-group input, .form-group textarea { width: 100%; padding: 12px 16px; border: 1px solid var(--border); border-radius: var(--radius-btn); font-size: 15px; font-family: inherit; color: var(--text-primary); background: var(--bg-page); transition: border-color 0.3s ease; outline: none; }
.form-group input:focus, .form-group textarea:focus { border-color: var(--brand); }
.form-group textarea { height: 120px; resize: vertical; }
.btn-submit { display: inline-flex; align-items: center; gap: 8px; padding: 14px 36px; background: var(--brand); color: #fff; font-size: 15px; font-weight: 500; border: none; border-radius: var(--radius-btn); cursor: pointer; transition: all 0.25s ease; width: 100%; justify-content: center; }
.btn-submit:hover { background: var(--brand-dark); transform: translateY(-1px); box-shadow: var(--shadow-md); }

/* ===== FOOTER ===== */
.footer { background: #ffffff; color: var(--text-secondary); padding: 64px 0 0; position: relative; }
.footer::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: var(--brand); }
.footer-inner { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 48px; padding-bottom: 48px; border-bottom: 1px solid var(--border); }
.footer-brand img { height: 36px; margin-bottom: 16px; }
.footer-brand-desc { font-size: 14px; line-height: 1.8; color: var(--text-secondary); }
.footer-col-title { font-size: 15px; font-weight: 600; color: var(--text-primary); margin-bottom: 20px; }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 12px; }
.footer-links a { font-size: 14px; color: var(--text-secondary); text-decoration: none; transition: color 0.2s; }
.footer-links a:hover { color: var(--brand); }
.footer-contact-item { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 14px; font-size: 14px; color: var(--text-secondary); }
.footer-contact-item svg { width: 16px; height: 16px; margin-top: 3px; flex-shrink: 0; color: var(--text-secondary); opacity: 0.6; }
.footer-bottom { padding: 24px 0; display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: var(--text-secondary); opacity: 0.7; }
.footer-bottom a { color: var(--text-secondary); text-decoration: none; }
.footer-bottom a:hover { color: var(--brand); }

/* ===== PAGINATION ===== */
.pagination { display: flex; justify-content: center; align-items: center; gap: 8px; margin-top: 48px; }
.page-btn { padding: 10px 18px; border: 1px solid var(--border); border-radius: var(--radius-btn); background: var(--bg-card); color: var(--text-secondary); font-size: 14px; cursor: pointer; transition: all 0.3s ease; }
.page-btn:hover:not(.disabled):not(.active) { border-color: var(--brand); color: var(--brand); }
.page-btn.active { background: var(--brand); color: #fff; border-color: var(--brand); }
.page-btn.disabled { opacity: 0.4; cursor: not-allowed; }

/* ===== BREADCRUMB ===== */
.breadcrumb { font-size: 14px; color: var(--text-secondary); margin-bottom: 32px; text-align: left; }
.breadcrumb a { color: var(--text-secondary); text-decoration: none; transition: color 0.2s; }
.breadcrumb a:hover { color: var(--brand); }
.breadcrumb-sep { margin: 0 8px; opacity: 0.5; }

/* ===== DETAIL PAGE ===== */
.detail-hero { margin-top: 72px; position: relative; height: 300px; overflow: hidden; }
.detail-hero-bg { position: absolute; inset: 0; background-size: cover; background-position: center; }
.detail-hero-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(30,42,58,0.6), rgba(43,94,167,0.5)); }
.detail-body { padding: var(--section-gap) 0; }
.detail-title { font-size: 32px; font-weight: 700; color: var(--brand); margin-bottom: 8px; letter-spacing: -0.5px; }
.detail-subtitle { font-size: 14px; color: var(--text-secondary); margin-bottom: 32px; font-family: 'Inter', sans-serif; }
.detail-content { max-width: 100%; }
.detail-content p { font-size: 15px; line-height: 2; color: var(--text-secondary); margin-bottom: 20px; }
.detail-divider { height: 3px; background: linear-gradient(90deg, var(--brand), var(--brand-light)); margin: 40px 0; border-radius: 2px; }
.detail-features { display: flex; flex-wrap: wrap; gap: 10px; margin: 24px 0; }
.detail-feature-tag { padding: 6px 16px; background: var(--brand-light); color: var(--brand); font-size: 13px; font-weight: 500; border-radius: 20px; }
.detail-gallery { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin: 32px 0; }
.detail-gallery img { width: 100%; border-radius: var(--radius-img); object-fit: cover; aspect-ratio: 16/10; }
.related-title { font-size: 24px; font-weight: 700; color: var(--brand); margin-bottom: 32px; text-align: center; }
.related-section { padding: var(--section-gap) 0; background: var(--bg-alt); }

/* ===== PRODUCT DETAIL TOP ===== */
.product-detail-top { display: flex; gap: 48px; margin-bottom: 48px; align-items: flex-start; }
.product-carousel { flex: 0 0 50%; position: relative; }
.product-carousel-main { width: 100%; aspect-ratio: 4/3; border-radius: var(--radius-img); overflow: hidden; border: 1px solid #999; }
.product-carousel-main img { width: 100%; height: 100%; object-fit: contain; background: #fff; }
.product-carousel-thumbs { display: flex; gap: 10px; margin-top: 12px; }
.product-carousel-thumb { width: 80px; height: 60px; border-radius: 8px; overflow: hidden; cursor: pointer; border: 2px solid transparent; transition: border-color 0.3s ease; flex-shrink: 0; }
.product-carousel-thumb img { width: 100%; height: 100%; object-fit: cover; }
.product-carousel-thumb.active { border-color: var(--brand); }
.product-carousel-thumb:hover { border-color: var(--brand-light); }
.product-carousel-nav { position: absolute; top: 50%; transform: translateY(-50%); width: 36px; height: 36px; border-radius: 50%; background: rgba(255,255,255,0.9); border: none; cursor: pointer; display: flex; align-items: center; justify-content: center; z-index: 2; transition: all 0.3s ease; }
.product-carousel-nav:hover { background: #fff; box-shadow: var(--shadow-md); }
.product-carousel-nav svg { width: 16px; height: 16px; color: var(--text-primary); }
.product-carousel-prev { left: 12px; }
.product-carousel-next { right: 12px; }
.product-info { flex: 1; }
.product-info-name { font-size: 28px; font-weight: 700; color: var(--text-primary); margin-bottom: 8px; letter-spacing: -0.5px; }
.product-info-name-en { font-size: 14px; color: var(--text-secondary); margin-bottom: 20px; font-family: 'Inter', sans-serif; }
.product-info-desc { font-size: 15px; line-height: 1.8; color: var(--text-secondary); margin-bottom: 24px; }
.product-info-features { margin-bottom: 28px; }
.product-info-features-title { font-size: 14px; font-weight: 600; color: var(--text-primary); margin-bottom: 12px; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .hero h1 { font-size: 44px; }
    .about-inner, .about-content-block, .about-content-block.reverse { flex-direction: column; gap: 48px; }
    .about-content, .about-image, .about-text-col, .about-img-col { flex: 0 0 100%; }
    .products-grid { grid-template-columns: repeat(2, 1fr); }
    .news-grid { grid-template-columns: repeat(2, 1fr); }
    .cases-grid { grid-template-columns: 1fr; }
    .cert-grid { grid-template-columns: repeat(2, 1fr); }
    .factory-grid { grid-template-columns: repeat(2, 1fr); }
    .contact-grid { grid-template-columns: 1fr; gap: 40px; }
    .footer-inner { grid-template-columns: repeat(2, 1fr); }
    .case-slide { min-width: 70vw; width: 70vw; aspect-ratio: 16/9; }
    .case-slide-title { font-size: 24px; }
    .cases-fullwidth { margin-left: 0; width: 100%; }
}
@media (max-width: 768px) {
    .container { padding: 0 20px; }
    .header-inner { padding: 0 20px; }
    .nav { display: none; }
    .hero { height: 100vh; }
    .hero h1 { font-size: 32px; }
    .hero-desc { font-size: 15px; }
    .page-hero { padding: 50px 0; }
    .page-hero h1 { font-size: 28px; }
    .section { padding: 60px 0; }
    .section-title { font-size: 28px; }
    .products-grid, .news-grid, .cert-grid, .factory-grid { grid-template-columns: 1fr; }
    .cert-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-inner { grid-template-columns: 1fr; }
    .about-stats { flex-wrap: wrap; gap: 24px; }
    .cases-fullwidth { margin-left: 0; width: 100%; padding: 0 0 40px; }
    .cases-viewport { width: 100%; }
    .cases-nav-btn { display: none; }
    .case-slide { min-width: 100%; width: 100%; aspect-ratio: 4/3; }
    .case-slide-title { font-size: 18px; }
    .contact-form { padding: 24px; }
    .detail-hero { height: 200px; }
    .detail-title { font-size: 24px; }
    .detail-gallery { grid-template-columns: 1fr; }
    .pagination { flex-wrap: wrap; }
    .page-btn { padding: 8px 12px; font-size: 13px; }
    .product-detail-top { flex-direction: column; gap: 24px; }
    .product-carousel { flex: 0 0 100%; }
}
/* HUWEI_CMS_V3 detail rich media */
.detail-content img,
.detail-content video,
.detail-content figure img,
.detail-content figure video,
.detail-body img,
.detail-body video {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 16px auto;
}
.detail-content figure,
.detail-body figure {
  max-width: 100%;
  margin: 20px 0;
}
.detail-content .cms-video video,
.detail-body .cms-video video {
  width: 100%;
}