/* ===== Reset & Base ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --bg-alt: #f1f5f9;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --accent-1: #f97316;
    --accent-2: #ea580c;
    --accent-green: #059669;
    --accent-orange: #ea580c;
    --accent-purple: #7c3aed;
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    --glass-bg: rgba(255,255,255,0.9);
    --nav-height: 68px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.06);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.08);
    --shadow-card: 0 1px 4px rgba(0,0,0,0.04), 0 4px 16px rgba(0,0,0,0.04);
    --transition: all 0.25s ease;
}

html { scroll-behavior: smooth; }

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Inter', 'Noto Sans SC', -apple-system, sans-serif;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

/* ===== Typography ===== */
h1, h2, h3, h4 { font-weight: 700; line-height: 1.25; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); }
h3 { font-size: 1.2rem; }
h4 { font-size: 1.05rem; }

/* ===== Section ===== */
.section {
    padding: 80px 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.section-alt {
    background: var(--bg-alt);
}

.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-title {
    font-weight: 800;
    margin-bottom: 12px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: "";
    display: block;
    width: 48px;
    height: 3px;
    background: var(--accent-1);
    border-radius: 2px;
    margin: 12px auto 0;
}

.section-desc {
    color: var(--text-secondary);
    font-size: 1.05rem;
    max-width: 520px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ===== Navbar ===== */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--nav-height);
    z-index: 1000;
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.navbar-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0;
    margin-left: -12px;

}

.logo-icon { flex-shrink: 0; }

.logo-text {
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--accent-1);
    padding-left: 0;
}

.nav-links { display: flex; gap: 2px; }

.nav-link {
    padding: 8px 18px;
    border-radius: 8px;
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
}

.nav-link:hover { color: var(--accent-1); background: rgba(249,115,22,0.05); }
.nav-link.active { color: var(--accent-1); background: rgba(249,115,22,0.08); font-weight: 600; }
/*手机移动端配置*/
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.mobile-menu-btn span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

.mobile-menu-btn.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.mobile-menu-btn.active span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 0 24px;
    background: linear-gradient(160deg, #f0f4ff 0%, #ffffff 40%, #f8fafc 70%, #eef2ff 100%);
}

.hero-particles {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-particles span {
    position: absolute;
    width: 3px;
    height: 3px;
    background: var(--accent-1);
    border-radius: 50%;
    animation: particle-float linear infinite;
    opacity: 0.12;
}

@keyframes particle-float {
    0% { transform: translateY(100vh) scale(0); opacity: 0; }
    10% { opacity: 0.12; }
    90% { opacity: 0.12; }
    100% { transform: translateY(-10vh) scale(1); opacity: 0; }
}

.hero-content {
    position: relative;
    text-align: center;
    max-width: 780px;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--accent-1);
    background: rgba(249,115,22,0.06);
    border: 1px solid rgba(249,115,22,0.12);
    margin-bottom: 24px;
}

.pulse-dot {
    width: 6px; height: 6px;
    background: var(--accent-1);
    border-radius: 50%;
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(249,115,22,0.3); }
    50% { opacity: 0.5; box-shadow: 0 0 0 8px rgba(249,115,22,0); }
}

.hero-title {
    margin-bottom: 20px;
    font-weight: 900;
    letter-spacing: -0.03em;
    line-height: 1.1;
    color: var(--text-primary);
}

.hero-title .gradient-text {
    background: linear-gradient(135deg, var(--accent-1), #ea580c);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 36px;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 30px;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    outline: none;
}

.btn-primary {
    background: var(--accent-1);
    color: #fff;
    box-shadow: 0 4px 14px rgba(249,115,22,0.25);
}

.btn-primary:hover {
    background: var(--accent-2);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(249,115,22,0.35);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-outline:hover {
    border-color: var(--accent-1);
    color: var(--accent-1);
    background: rgba(249,115,22,0.03);
}

.scroll-indicator {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    color: var(--text-muted);
    font-size: 0.78rem;
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

/* ===== Categories ===== */
.categories-section {
    background: var(--bg-secondary);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.category-card {
    position: relative;
    padding: 36px 28px;
    border-radius: var(--radius-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.category-card:hover {
    transform: translateY(-4px);
    border-color: rgba(249,115,22,0.15);
    box-shadow: var(--shadow-md);
}

.category-icon-wrapper {
    width: 72px;
    height: 72px;
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

.category-card h3 {
    margin-bottom: 8px;
    font-weight: 700;
    color: var(--text-primary);
}

.category-card p {
    color: var(--text-secondary);
    font-size: 0.88rem;
    line-height: 1.6;
    margin-bottom: 12px;
}

.category-arrow {
    display: inline-flex;
    color: var(--accent-1);
    opacity: 0;
    transform: translateX(-8px);
    transition: var(--transition);
}

.category-card:hover .category-arrow {
    opacity: 1;
    transform: translateX(0);
}

/* ===== Featured Products ===== */
.featured-section {
    background: var(--bg-alt);
}

.featured-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.featured-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    min-height: 360px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    box-shadow: var(--shadow-card);
}

.featured-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.featured-card-content { position: relative; z-index: 2; }
 
.featured-category {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-1);
    background: rgba(249,115,22,0.06);
    margin-bottom: 10px;
}

.featured-name {
    font-size: 1.4rem;
    font-weight: 800;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.featured-subtitle {
    color: var(--text-secondary);
    margin-bottom: 14px;
    font-size: 0.92rem;
}

.featured-specs {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 18px;
}

.spec-tag {
    padding: 3px 10px;
    border-radius: 6px;
    font-size: 0.76rem;
    background: var(--bg-alt);
    color: var(--text-muted);
    border: 1px solid var(--border-color);
}

.featured-learn-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--accent-1);
    opacity: 0.8;
    transition: var(--transition);
}

.featured-card:hover .featured-learn-more { opacity: 1; gap: 10px; }

/* Featured card background images and overlay */
.featured-card img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.featured-overlay {
    position: absolute;
    inset: 0;
    z-index: 1;
    background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.2) 40%, rgba(0,0,0,0.05) 70%, transparent 100%);
}


.featured-card-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 36px;
    z-index: 2;
}

.featured-card-content .featured-category {
    background: rgba(255,255,255,0.15);
    color: #fff;
}

.featured-card-content .featured-name {
    color: #fff;
}

.featured-card-content .featured-subtitle {
    color: rgba(255,255,255,0.8);
}

.featured-card-content .spec-tag {
    background: rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.7);
    border-color: rgba(255,255,255,0.15);
}

.featured-card-content .featured-learn-more {
    color: #fff;
}

/* ===== Stats ===== */
.stats-section {
    background: var(--bg-secondary);
    padding: 60px 24px;
}

.stats-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.stat-item {
    text-align: center;
    padding: 32px 20px;
    border-radius: var(--radius-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.stat-number {
    font-size: 2.6rem;
    font-weight: 900;
    color: var(--accent-1);
}

.stat-plus {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--accent-1);
}

.stat-label {
    color: var(--text-muted);
    margin-top: 6px;
    font-size: 0.88rem;
}

/* ===== Tech Section ===== */
.tech-section { background: var(--bg-secondary); }

.tech-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.tech-card {
    padding: 32px 24px;
    border-radius: var(--radius-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.tech-card:hover {
    transform: translateY(-3px);
    border-color: rgba(249,115,22,0.12);
    box-shadow: var(--shadow-md);
}

.tech-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(249,115,22,0.04);
    border: 1px solid rgba(249,115,22,0.08);
    margin-bottom: 16px;
}

.tech-card h4 {
    margin-bottom: 6px;
    font-size: 1rem;
}

.tech-card p {
    color: var(--text-secondary);
    font-size: 0.88rem;
    line-height: 1.6;
}

/* ===== CTA ===== */
.cta-section {
    text-align: center;
    padding: 100px 24px;
    background: linear-gradient(135deg, var(--accent-1), #ea580c);
}

.cta-content {
    max-width: 560px;
    margin: 0 auto;
}

.cta-content h2 {
    margin-bottom: 12px;
    color: #fff;
}

.cta-content p {
    color: rgba(255,255,255,0.8);
    margin-bottom: 32px;
    font-size: 1.05rem;
}

.cta-actions {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-section .btn-primary {
    background: #fff;
    color: var(--accent-1);
    box-shadow: 0 4px 14px rgba(0,0,0,0.15);
}

.cta-section .btn-primary:hover {
    background: #f8fafc;
    transform: translateY(-1px);
}

.cta-section .btn-outline {
    color: #fff;
    border-color: rgba(255,255,255,0.3);
}

.cta-section .btn-outline:hover {
    border-color: #fff;
    background: rgba(255,255,255,0.05);
}

/* ===== Footer ===== */
.footer {
    background: #0f172a;
    padding: 60px 24px 28px;
}

.footer-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 36px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
}

.footer-logo-icon { flex-shrink: 0; }

.footer-brand-name {
    font-size: 1.1rem;
    font-weight: 800;
    color: #fff;
}

.footer-desc {
    color: #64748b;
    font-size: 0.88rem;
    line-height: 1.6;
}

.footer-col { display: flex; flex-direction: column; gap: 10px; }

.footer-col h4 {
    font-size: 0.92rem;
    margin-bottom: 2px;
    font-weight: 600;
    color: #e2e8f0;
}

.footer-col a, .footer-addr {
    color: #64748b;
    font-size: 0.85rem;
    transition: var(--transition);
}

.footer-col a:hover { color: #94a3b8; }

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.06);
    display: flex;
    justify-content: space-between;
    color: #475569;
    font-size: 0.8rem;
}

/* ===== Page Banner ===== */
.page-banner {
    position: relative;
    padding: 120px 24px 60px;
    text-align: center;
    overflow: hidden;
    background: linear-gradient(160deg, #f0f4ff, #ffffff, #f8fafc);
}

.page-banner-content { position: relative; z-index: 2; }

.page-banner h1 {
    font-weight: 900;
    margin-bottom: 10px;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.page-banner p {
    color: var(--text-secondary);
    font-size: 1.05rem;
}

/* ===== Products Filter ===== */
.filter-section { padding-top: 0; padding-bottom: 36px; }

.filter-bar {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: center;
}

.filter-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 22px;
    border-radius: 50px;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    cursor: pointer;
}

.filter-btn:hover {
    color: var(--text-primary);
    border-color: #cbd5e1;
}

.filter-btn.active {
    color: var(--accent-1);
    background: rgba(249,115,22,0.06);
    border-color: rgba(249,115,22,0.2);
}

/* ===== Product Grid ===== */
.product-grid-section { background: var(--bg-alt); }

.product-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.product-card {
    display: flex;
    flex-direction: column;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    min-height: 280px;
    background: var(--bg-card);
    box-shadow: var(--shadow-sm);
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.product-card-visual {
    position: relative;
    height: 320px;
    overflow: hidden;
}

.product-card-placeholder {
}

.product-card-info {
}

.product-card-category {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.73rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.product-card-info h3 {
    font-size: 1.05rem;
    margin-bottom: 3px;
}

.product-card-info > p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 10px;
}

.product-card-specs { display: flex; gap: 6px; flex-wrap: wrap; }

.spec-dot {
    font-size: 0.74rem;
    color: var(--text-muted);
}

.spec-dot::before {
    content: "· ";
}

/* Product Card Overlay */
.product-card-overlay {
    position: absolute;
    inset: 0;
    z-index: 1;
    background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.2) 40%, rgba(0,0,0,0.05) 70%, transparent 100%);
}


.product-card-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 24px;
    z-index: 2;
}

.product-card-content .product-card-category {
    background: rgba(255,255,255,0.15);
    color: #fff;
}

.product-card-content h3 {
    font-size: 1.05rem;
    margin-bottom: 3px;
    color: #fff;
}

.product-card-content > p {
    color: rgba(255,255,255,0.8);
    font-size: 0.85rem;
    margin-bottom: 10px;
}

.product-card-content .spec-dot {
    color: rgba(255,255,255,0.65);
}

.product-card-content .spec-dot::before {
    color: rgba(255,255,255,0.8);
}

/* Product images */
.product-card-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.detail-product-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 24px;
}

.detail-product-overlay {
    position: absolute;
    inset: 0;
    border-radius: 24px;
    z-index: 1;
    background: linear-gradient(135deg, rgba(0,0,0,0.3) 0%, rgba(0,0,0,0.1) 50%, transparent 100%);
}

.category-icon-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 18px;
}

/* ===== Empty State ===== */
.empty-state { text-align: center; padding: 80px 20px; }
.empty-state svg { margin-bottom: 16px; }
.empty-state h3 { margin-bottom: 6px; }
.empty-state p { color: var(--text-secondary); }

/* ===== Product Detail ===== */
.product-detail-hero {
    padding: 120px 24px 60px;
    background: var(--bg-secondary);
}

.product-detail-hero-inner {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.product-detail-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 32px;
}

.product-detail-breadcrumb a { color: var(--text-secondary); transition: var(--transition); }
.product-detail-breadcrumb a:hover { color: var(--accent-1); }

.product-detail-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.product-detail-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.detail-product-placeholder {
    width: 100%;
    max-width: 380px;
    aspect-ratio: 1;
    border-radius: 24px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-alt);
    border: 1px solid var(--border-color);
}

.detail-category {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    background: rgba(249,115,22,0.06);
    color: var(--accent-1);
    margin-bottom: 12px;
}

.product-detail-info h1 { margin-bottom: 6px; }

.detail-subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 18px;
}

.detail-desc {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 24px;
    font-size: 0.92rem;
}

.detail-specs, .detail-features { margin-bottom: 20px; }

.detail-specs h4, .detail-features h4 {
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.specs-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.spec-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.88rem;
    color: var(--text-primary);
}

.spec-item svg { flex-shrink: 0; }

.features-list { display: flex; flex-direction: column; gap: 8px; }

.feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.88rem;
    color: var(--text-secondary);
}

.feature-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--accent-1);
    flex-shrink: 0;
}

.detail-actions {
    display: flex;
    gap: 12px;
    margin-top: 28px;
}

/* ===== Related Products ===== */
.related-section {
    padding-top: 40px;
    padding-bottom: 80px;
    background: var(--bg-alt);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.related-card {
    padding: 28px 24px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    background: var(--bg-card);
    box-shadow: var(--shadow-sm);
}

.related-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.related-card h4 {
    margin-bottom: 4px;
    font-size: 1rem;
}

.related-card p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 14px;
}

.related-arrow {
    color: var(--accent-1);
    font-size: 1.1rem;
    transition: var(--transition);
}

.related-card:hover .related-arrow { margin-left: 6px; }

/* ===== About ===== */
.about-intro { padding-top: 60px; }

.about-intro-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 50px;
    align-items: center;
}

.about-desc {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 14px;
    font-size: 0.92rem;
}

.about-stats-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-top: 28px;
}

.about-stat {
    text-align: center;
    padding: 18px 10px;
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
}

.about-stat-num {
    display: block;
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--accent-1);
    margin-bottom: 2px;
}

.about-stat-label {
    font-size: 0.76rem;
    color: var(--text-muted);
}

.about-visual-placeholder {
    width: 100%;
    aspect-ratio: 1;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-alt);
    border: 1px solid var(--border-color);
}

/* ===== Values ===== */
.values-section { background: var(--bg-alt); }

.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.value-card {
    padding: 28px 24px;
    border-radius: var(--radius-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.value-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.value-number {
    font-size: 2rem;
    font-weight: 900;
    color: rgba(249,115,22,0.08);
    margin-bottom: 12px;
    line-height: 1;
}

.value-card h4 {
    margin-bottom: 6px;
    font-size: 1rem;
}

.value-card p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.6;
}

/* ===== R&D Section ===== */
.rd-section { background: var(--bg-secondary); }

.rd-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.rd-item {
    padding: 28px 24px;
    border-radius: var(--radius-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.rd-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.rd-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: 2px solid;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 14px;
}

.rd-item h4 {
    margin-bottom: 4px;
    font-size: 0.95rem;
}

.rd-item p {
    color: var(--text-secondary);
    font-size: 0.82rem;
    line-height: 1.5;
}

/* ===== Contact ===== */
.contact-section { background: var(--bg-alt); }

.contact-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.contact-card {
    padding: 28px 20px;
    border-radius: var(--radius-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.contact-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.contact-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(249,115,22,0.04);
    border: 1px solid rgba(249,115,22,0.08);
    margin: 0 auto 14px;
}

.contact-card h4 {
    margin-bottom: 6px;
    font-size: 0.95rem;
}

.contact-card a, .contact-card span {
    color: var(--text-secondary);
    font-size: 0.88rem;
    transition: var(--transition);
}

.contact-card a:hover { color: var(--accent-1); }

/* ===== AOS Animation ===== */
[data-aos] {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

[data-aos].aos-animate {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .featured-grid { grid-template-columns: 1fr; }
    .about-intro-grid { grid-template-columns: 1fr; }
    .about-visual-placeholder { max-width: 280px; margin: 0 auto; }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: var(--nav-height);
        left: 0; right: 0;
        background: var(--bg-card);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 12px;
        gap: 2px;
        transform: translateY(-100%);
        opacity: 0;
        transition: var(--transition);
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
    }
    .nav-links.open {
        transform: translateY(0);
        opacity: 1;
    }
    .nav-link { padding: 12px 16px; font-size: 0.95rem; }
    .mobile-menu-btn { display: flex; }

    .section { padding: 48px 20px; }

    .categories-grid { grid-template-columns: 1fr; gap: 14px; }
    .featured-grid { grid-template-columns: 1fr; }
    .featured-card { min-height: 240px; padding: 24px; }
    .featured-card-image { right: 12px; }
    .product-placeholder { width: 80px; height: 80px; }

    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .stat-number { font-size: 2rem; }

    .tech-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
    .tech-card { padding: 20px 16px; }

    .product-grid { grid-template-columns: 1fr; }
    .filter-bar { gap: 6px; }
    .filter-btn { padding: 7px 14px; font-size: 0.8rem; }

    .product-detail-layout { grid-template-columns: 1fr; gap: 32px; }
    .product-detail-hero { padding: 100px 20px 40px; }
    .specs-list { grid-template-columns: 1fr; }

    .related-grid { grid-template-columns: 1fr; }

    .about-stats-row { grid-template-columns: repeat(2, 1fr); }
    .values-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
    .contact-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
    .rd-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }

    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .footer-bottom { flex-direction: column; gap: 6px; text-align: center; }

    .cta-section { padding: 60px 20px; }
}

@media (max-width: 480px) {
    .values-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .rd-grid { grid-template-columns: 1fr; }
    .tech-grid { grid-template-columns: 1fr; }
    .hero-actions { flex-direction: column; align-items: center; }
    .cta-actions { flex-direction: column; align-items: center; }
    .detail-actions { flex-direction: column; }
}


/* ===== Hero Carousel ===== */
.hero {
    position: relative;
    min-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 0 24px;
    background: #0a0e27;
}

.hero-slides {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-slide {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0;
    transition: opacity 0.8s ease;
}

.hero-slide.active {
    opacity: 1;
}

/* 透明度覆盖层 – 可调 */
.hero-overlay {
    position: absolute;
    inset: 0;
    z-index: 1;
    background: rgba(0,0,0,0.35);
    pointer-events: none;
}

/* Hero 内容在深色背景上 */
.hero .hero-content { z-index: 3; }
.hero .hero-subtitle { color: rgba(255,255,255,0.7); }
.hero .hero-badge {
    color: rgba(255,255,255,0.9);
    background: rgba(255,255,255,0.08);
    border-color: rgba(255,255,255,0.15);
}
.hero .hero-title { color: #fff; }
.hero .pulse-dot { background: #fff; }
@keyframes pulse-dot-white {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(255,255,255,0.4); }
    50% { opacity: 0.6; box-shadow: 0 0 0 8px rgba(255,255,255,0); }
}
.hero .pulse-dot { animation: pulse-dot-white 2s ease-in-out infinite; }
.hero .btn-outline {
    color: #fff;
    border-color: rgba(255,255,255,0.25);
}
.hero .btn-outline:hover {
    border-color: #fff;
    background: rgba(255,255,255,0.05);
}
.hero .scroll-indicator { color: rgba(255,255,255,0.4); z-index: 3; }

/* 箭头按钮 */
.hero-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 5;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.15);
    background: rgba(255,255,255,0.06);
    color: rgba(255,255,255,0.6);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.25s ease;
    backdrop-filter: blur(8px);
}
.hero-arrow:hover {
    background: rgba(255,255,255,0.12);
    color: #fff;
    border-color: rgba(255,255,255,0.3);
}
.hero-arrow-prev { left: 24px; }
.hero-arrow-next { right: 24px; }

/* 指示点 */
.hero-dots {
    position: absolute;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 5;
    display: flex;
    gap: 10px;
}
.hero-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: 1.5px solid rgba(255,255,255,0.3);
    background: transparent;
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 0;
}
.hero-dot.active {
    background: #fff;
    border-color: #fff;
    transform: scale(1.2);
}
.hero-dot:hover {
    border-color: rgba(255,255,255,0.6);
}

/* 移除旧的 hero-bg */
.hero-bg { display: none; }

@media (max-width: 768px) {
    .hero-arrow { width: 40px; height: 40px; }
    .hero-arrow-prev { left: 12px; }
    .hero-arrow-next { right: 12px; }
    .hero-dots { bottom: 64px; }
}