/* ============================================================
   江苏新智达新能源设备有限公司 - 企业官网样式 v2.0
   设计理念：科技感 · 现代感 · 轻奢工业风 · 玻璃态
   ============================================================ */

/* ---------- CSS 变量 ---------- */
:root {
    --primary: #0066ff;
    --primary-dark: #0044cc;
    --primary-light: #3388ff;
    --accent: #00d4aa;
    --accent-glow: rgba(0, 212, 170, 0.3);
    --dark-bg: #060a14;
    --dark-card: #0c1222;
    --dark-card-hover: #121c32;
    --dark-nav: rgba(6, 10, 20, 0.8);
    --text-primary: #f0f2f5;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    --border: rgba(255, 255, 255, 0.06);
    --border-light: rgba(255, 255, 255, 0.12);
    --glass-bg: rgba(12, 18, 34, 0.72);
    --glass-border: rgba(255, 255, 255, 0.16);
    --gradient-1: linear-gradient(135deg, #0066ff 0%, #00d4aa 100%);
    --gradient-2: linear-gradient(135deg, #0a0e1a 0%, #1a1040 50%, #0a1a2e 100%);
    --gradient-hero: linear-gradient(160deg, #040810 0%, #0a1228 30%, #081820 60%, #040810 100%);
    --gradient-accent: linear-gradient(135deg, #00d4aa 0%, #0066ff 100%);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 60px rgba(0, 102, 255, 0.12), 0 0 120px rgba(0, 212, 170, 0.05);
    --shadow-glow-accent: 0 0 40px rgba(0, 212, 170, 0.2);
    --radius-sm: 8px;
    --radius: 14px;
    --radius-lg: 22px;
    --radius-xl: 28px;
    --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 1240px;
    --nav-height: 76px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

body {
    font-family: "OPPO Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, select, textarea { font-family: inherit; }

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 12px; height: 12px; }
::-webkit-scrollbar-track { background: var(--dark-bg); }
::-webkit-scrollbar-thumb { background: linear-gradient(180deg, var(--primary), var(--accent)); border-radius: 6px; border: 2px solid var(--dark-bg); min-height: 24px; }

/* ---------- Selection ---------- */
::selection {
    background: rgba(0, 102, 255, 0.3);
    color: #fff;
}

/* ==================== 全局装饰背景 ==================== */
body::before {
    content: '';
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background:
        radial-gradient(ellipse 600px 600px at 20% 30%, rgba(0, 102, 255, 0.03) 0%, transparent 70%),
        radial-gradient(ellipse 500px 500px at 80% 70%, rgba(0, 212, 170, 0.02) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
    animation: ambientFloat 20s ease-in-out infinite alternate;
}

@keyframes ambientFloat {
    0% { transform: translate(0, 0) rotate(0deg); }
    100% { transform: translate(-30px, -20px) rotate(2deg); }
}

/* ==================== 导航栏 ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--dark-nav);
    backdrop-filter: blur(24px) saturate(200%);
    -webkit-backdrop-filter: blur(24px) saturate(200%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    transition: all var(--transition);
    height: var(--nav-height);
}

.navbar.scrolled {
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.6);
    border-bottom-color: rgba(255, 255, 255, 0.08);
    background: rgba(6, 10, 20, 0.95);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-img {
    height: 44px;
    width: auto;
    filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.35));
    transition: all var(--transition);
}

.nav-logo:hover .logo-img {
    filter: drop-shadow(0 4px 12px rgba(0, 102, 255, 0.3));
    transform: scale(1.05);
}

.logo-title {
    font-size: clamp(20px, 5vw, 36px);
    font-weight: 600;
    color: var(--text1);
    letter-spacing: 1px;
    white-space: nowrap;
}

.logo-title-img {
    height: 52px;
    width: auto;
    object-fit: contain;
    margin-top: 6px;
    filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.4));
    transition: all var(--transition);
}

.logo-title-svg {
    width: 160px;
    height: 28px;
    overflow: visible;
    filter: drop-shadow(0 2px 8px rgba(0, 102, 255, 0.2));
    transition: all var(--transition);
}

.nav-logo:hover .logo-title-svg {
    filter: drop-shadow(0 4px 12px rgba(0, 102, 255, 0.35));
    transform: scale(1.05);
}

.nav-logo:hover .logo-title-img {
    filter: drop-shadow(0 4px 12px rgba(255, 215, 0, 0.4));
    transform: scale(1.05);
}

.logo-fallback {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 42px;
    height: 42px;
    border-radius: var(--radius-sm);
    background: var(--gradient-1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: #fff;
    box-shadow: 0 4px 16px rgba(0, 102, 255, 0.3);
}

.logo-text {
    font-size: clamp(16px, 3.5vw, 20px);
    font-weight: 700;
    color: #fff;
    letter-spacing: 1px;
    white-space: nowrap;
}
.logo-sub {
    font-size: 12px;
    font-weight: 400;
    color: var(--accent);
    margin-left: 4px;
}

.nav-links {
    display: flex;
    gap: 6px;
}

.nav-link {
    padding: 8px 22px;
    border-radius: 24px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition);
    position: relative;
    letter-spacing: 0.5px;
}

.nav-link:hover,
.nav-link.active {
    color: #fff;
    background: rgba(255, 255, 255, 0.06);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 18px;
    height: 3px;
    border-radius: 2px;
    background: var(--gradient-1);
    box-shadow: 0 0 8px var(--accent-glow);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.btn-message {
    padding: 10px 24px;
    border-radius: 24px;
    font-size: 14px;
    font-weight: 600;
    color: #fff;
    background: var(--gradient-1);
    transition: all var(--transition);
    white-space: nowrap;
    box-shadow: 0 4px 16px rgba(0, 102, 255, 0.25);
    position: relative;
    overflow: hidden;
}

.btn-message::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--transition);
}
.btn-message:hover::before { opacity: 1; }

.btn-message:hover {
    box-shadow: 0 6px 28px rgba(0, 102, 255, 0.4);
    transform: translateY(-2px);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 28px;
}
.menu-toggle span {
    display: block;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: all var(--transition);
}

/* ==================== Hero ==================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-hero);
    overflow: hidden;
    padding-top: var(--nav-height);
}

.particle-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.6;
    z-index: 1;
}

/* Hero 背景轮播 */
.hero-slideshow {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-slide {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 2s ease;
    filter: saturate(0.85) brightness(0.9);
}

.hero-slide.active {
    opacity: 0.5;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(0, 102, 255, 0.06) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 30%, rgba(0, 212, 170, 0.04) 0%, transparent 60%),
        radial-gradient(ellipse at 50% 80%, rgba(0, 102, 255, 0.04) 0%, transparent 60%),
        linear-gradient(180deg, rgba(4, 8, 16, 0.15) 0%, transparent 30%, transparent 70%, rgba(4, 8, 16, 0.35) 100%);
}

/* Hero 装饰光效 */
.hero::before {
    content: '';
    position: absolute;
    top: 15%;
    left: -10%;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 102, 255, 0.08) 0%, transparent 70%);
    z-index: 1;
    animation: heroGlow1 8s ease-in-out infinite alternate;
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 10%;
    right: -5%;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 212, 170, 0.06) 0%, transparent 70%);
    z-index: 1;
    animation: heroGlow2 10s ease-in-out infinite alternate;
    pointer-events: none;
}

@keyframes heroGlow1 {
    0% { transform: translate(0, 0) scale(1); opacity: 0.6; }
    100% { transform: translate(60px, 40px) scale(1.2); opacity: 1; }
}

@keyframes heroGlow2 {
    0% { transform: translate(0, 0) scale(1); opacity: 0.5; }
    100% { transform: translate(-40px, -30px) scale(1.3); opacity: 1; }
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 920px;
    padding: 0 32px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 24px;
    border-radius: 24px;
    font-size: 14px;
    font-weight: 500;
    color: var(--accent);
    background: rgba(0, 212, 170, 0.06);
    border: 1px solid rgba(0, 212, 170, 0.15);
    margin-bottom: 36px;
    animation: fadeInUp 0.6s ease;
    backdrop-filter: blur(8px);
    letter-spacing: 1px;
}

.badge-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--accent);
    animation: pulse 2s infinite;
    box-shadow: 0 0 8px var(--accent);
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.8); }
}

.hero-title {
    font-size: clamp(38px, 6.5vw, 68px);
    line-height: 1.2;
    margin-bottom: 24px;
    animation: fadeInUp 0.6s 0.1s ease both;
    letter-spacing: 2px;
}

.title-line {
    display: block;
    font-weight: 800;
    letter-spacing: 3px;
    background: linear-gradient(180deg, #fff 0%, #b8c4d8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: none;
}

.title-line.accent {
    background: linear-gradient(135deg, #0088ff 0%, #00d4aa 50%, #0088ff 100%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-top: 10px;
    animation: gradientShift 4s ease-in-out infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% center; }
    50% { background-position: 100% center; }
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    letter-spacing: 3px;
    margin-bottom: 52px;
    animation: fadeInUp 0.6s 0.2s ease both;
    font-weight: 300;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    margin-bottom: 52px;
    animation: fadeInUp 0.6s 0.3s ease both;
}

.stat-item {
    text-align: center;
    position: relative;
}

.stat-number {
    font-size: 42px;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.stat-plus {
    font-size: 28px;
    font-weight: 700;
    color: var(--accent);
}

.stat-label {
    display: block;
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 6px;
    letter-spacing: 1px;
}

.stat-highlight {
    position: relative;
}
.stat-highlight::before {
    content: '';
    position: absolute;
    inset: -14px -20px;
    border-radius: 18px;
    background: rgba(0, 212, 170, 0.04);
    border: 1px solid rgba(0, 212, 170, 0.15);
    z-index: -1;
    backdrop-filter: blur(4px);
}

.about-card-float { display: none; }

.hero-buttons {
    display: flex;
    gap: 18px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.6s 0.4s ease both;
}

.btn {
    padding: 16px 40px;
    border-radius: 28px;
    font-size: 16px;
    font-weight: 600;
    transition: all var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 10px;
    position: relative;
    overflow: hidden;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: var(--gradient-1);
    color: #fff;
    box-shadow: 0 6px 30px rgba(0, 102, 255, 0.35);
}
.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
    transition: left 0.6s ease;
}
.btn-primary:hover::before {
    left: 100%;
}
.btn-primary:hover {
    box-shadow: 0 10px 40px rgba(0, 102, 255, 0.5);
    transform: translateY(-3px);
}

.btn-outline {
    border: 1.5px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    backdrop-filter: blur(4px);
}
.btn-outline:hover {
    border-color: rgba(255, 255, 255, 0.4);
    background: rgba(255, 255, 255, 0.06);
    transform: translateY(-3px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* 滚动指示器 */
.scroll-indicator {
    position: absolute;
    bottom: 36px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    font-size: 11px;
    color: var(--text-muted);
    letter-spacing: 3px;
    animation: fadeInUp 0.6s 0.6s ease both;
    text-transform: uppercase;
}

.scroll-mouse {
    width: 24px;
    height: 38px;
    border-radius: 12px;
    border: 2px solid rgba(255, 255, 255, 0.15);
    display: flex;
    justify-content: center;
    padding-top: 8px;
}

.scroll-wheel {
    width: 3px;
    height: 8px;
    border-radius: 2px;
    background: var(--accent);
    animation: scrollWheel 1.5s infinite;
    box-shadow: 0 0 6px var(--accent);
}

@keyframes scrollWheel {
    0% { opacity: 1; transform: translateY(0); }
    100% { opacity: 0; transform: translateY(12px); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==================== 章节通用 ==================== */
section {
    padding: 100px 32px;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 4px;
    color: var(--primary-light);
    text-transform: uppercase;
    margin-bottom: 14px;
    display: block;
    opacity: 0.8;
}

.section-title {
    font-size: clamp(30px, 4.5vw, 48px);
    font-weight: 800;
    letter-spacing: 2px;
    margin-bottom: 22px;
    background: linear-gradient(180deg, #fff 0%, #a0b0c8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
}

.divider-line {
    width: 50px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary-light), transparent);
}

.divider-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 10px var(--accent-glow);
}

/* ==================== 关于我们 ==================== */
.about {
    background: var(--dark-bg);
    position: relative;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse at 25% 20%, rgba(0, 102, 255, 0.04) 0%, transparent 50%),
        radial-gradient(ellipse at 75% 80%, rgba(0, 212, 170, 0.03) 0%, transparent 50%);
}

.about-content {
    max-width: var(--max-width);
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 72px;
    align-items: stretch;
}

.about-visual {
    position: relative;
}

.about-image-wrapper {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    height: 100%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.about-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: relative;
    z-index: 1;
    transition: transform 0.8s ease;
}
.about-image-wrapper:hover .about-img {
    transform: scale(1.03);
}

.about-image-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #0a1628, #102040);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    font-size: 48px;
    color: rgba(255, 255, 255, 0.35);
    position: relative;
    z-index: 2;
}

.about-glow {
    position: absolute;
    inset: 0;
    border-radius: var(--radius-lg);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.08);
    z-index: 2;
    pointer-events: none;
}

/* 关于我们装饰 */
.about-image-wrapper::after {
    content: '';
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 120px;
    height: 120px;
    border-radius: var(--radius-lg);
    border: 2px solid rgba(0, 212, 170, 0.15);
    z-index: 0;
}

.about-card-float { display: none; }

.about-text h3 {
    font-size: 30px;
    font-weight: 800;
    margin-bottom: 8px;
    letter-spacing: 1px;
}

.about-en {
    font-size: 14px;
    color: var(--accent);
    letter-spacing: 1px;
    margin-bottom: 24px;
    font-weight: 500;
}

.about-desc {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 2;
}
.about-desc strong {
    color: var(--accent);
    font-weight: 600;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 28px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 15px;
    color: var(--text-secondary);
    padding: 14px 20px;
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border);
    transition: all var(--transition);
    backdrop-filter: blur(4px);
}
.feature-item:hover {
    border-color: rgba(0, 212, 170, 0.2);
    background: rgba(0, 212, 170, 0.03);
    transform: translateX(6px);
}
.feature-item i {
    color: var(--accent);
    font-size: 18px;
    filter: drop-shadow(0 0 4px var(--accent-glow));
}

/* ---------- 发展历程 ---------- */
.timeline-section {
    max-width: var(--max-width);
    margin: 80px auto 0;
    padding: 48px;
    border-radius: var(--radius-lg);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(12px);
    position: relative;
    z-index: 1;
    overflow: hidden;
}

.timeline-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 102, 255, 0.3), rgba(0, 212, 170, 0.3), transparent);
}

.timeline-section::after {
    content: '';
    position: absolute;
    top: 20px;
    right: 20px;
    width: 60px;
    height: 60px;
    background: url('../images/tf_86_03.png') center/contain no-repeat;
    opacity: 0.12;
    pointer-events: none;
    z-index: 0;
}

.sub-heading {
    text-align: center;
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 52px;
    letter-spacing: 1px;
}
.sub-heading span {
    display: block;
    font-size: 13px;
    font-weight: 400;
    color: var(--text-muted);
    letter-spacing: 3px;
    margin-top: 6px;
}

.timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 24px;
    left: 12.5%;
    right: 12.5%;
    height: 2px;
    background: linear-gradient(90deg, rgba(0,102,255,0.4), rgba(0,212,170,0.4), rgba(0,102,255,0.4));
    border-radius: 1px;
}

.timeline-item {
    text-align: center;
    position: relative;
    padding-top: 48px;
}

.timeline-dot {
    position: absolute;
    top: 14px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--gradient-1);
    border: 3px solid var(--dark-bg);
    box-shadow: 0 0 20px var(--accent-glow), 0 0 40px rgba(0, 102, 255, 0.15);
    z-index: 2;
}

.timeline-card {
    background: rgba(12, 18, 34, 0.85);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 28px 22px;
    transition: all var(--transition);
    backdrop-filter: blur(16px) saturate(150%);
    -webkit-backdrop-filter: blur(16px) saturate(150%);
}
.timeline-card:hover {
    border-color: var(--border-light);
    transform: translateY(-6px);
    box-shadow: var(--shadow-glow);
    background: var(--dark-card-hover);
}

.timeline-year {
    font-size: 14px;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 2px;
}
.timeline-card h4 {
    font-size: 18px;
    margin: 10px 0;
    font-weight: 700;
}
.timeline-card p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ==================== 优势 ==================== */
.advantages {
    background: linear-gradient(180deg, var(--dark-bg) 0%, #080d1a 50%, var(--dark-bg) 100%);
    position: relative;
}
.advantages::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        url('../images/tf_80_03.jpg') repeat;
    opacity: 0.02;
    pointer-events: none;
}

.advantage-cards {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    position: relative;
    z-index: 1;
}

.advantage-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 44px 28px;
    position: relative;
    transition: all var(--transition);
    overflow: hidden;
    backdrop-filter: blur(18px) saturate(160%);
    -webkit-backdrop-filter: blur(18px) saturate(160%);
}

.advantage-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-1);
    opacity: 0;
    transition: opacity var(--transition);
}

.advantage-card::after {
    content: '';
    position: absolute;
    bottom: -40px;
    right: -40px;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: var(--gradient-1);
    opacity: 0.02;
    transition: opacity var(--transition);
}

.advantage-card:hover {
    border-color: var(--border-light);
    transform: translateY(-8px);
    box-shadow: var(--shadow-glow);
    background: var(--dark-card-hover);
}

.advantage-card:hover::before {
    opacity: 1;
}
.advantage-card:hover::after {
    opacity: 0.06;
}

.advantage-card.highlight {
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.1), rgba(0, 212, 170, 0.05));
    border-color: rgba(0, 102, 255, 0.2);
}

.advantage-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius);
    background: rgba(0, 102, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--primary-light);
    margin-bottom: 24px;
    transition: all var(--transition);
    border: 1px solid rgba(0, 102, 255, 0.1);
}
.advantage-icon img {
    width: 32px;
    height: 32px;
    object-fit: contain;
    opacity: 0.65;
    transition: all var(--transition);
}

.advantage-card:hover .advantage-icon {
    background: var(--gradient-1);
    color: #fff;
    box-shadow: 0 8px 28px rgba(0, 102, 255, 0.35);
    border-color: transparent;
    transform: scale(1.05);
}
.advantage-card:hover .advantage-icon img {
    opacity: 1;
}

.advantage-card h3 {
    font-size: 19px;
    font-weight: 700;
    margin-bottom: 14px;
    letter-spacing: 0.5px;
}

.advantage-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.advantage-number {
    position: absolute;
    top: 20px;
    right: 24px;
    font-size: 52px;
    font-weight: 900;
    color: rgba(255, 255, 255, 0.025);
    pointer-events: none;
}

/* ==================== 产品中心 ==================== */
.products {
    background: var(--dark-bg);
}

.product-categories {
    max-width: var(--max-width);
    margin: 0 auto 52px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.cat-btn {
    padding: 10px 24px;
    border-radius: 24px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    transition: all var(--transition);
    display: flex;
    align-items: center;
    gap: 7px;
    backdrop-filter: blur(6px);
    letter-spacing: 0.3px;
}

.cat-btn:hover {
    color: #fff;
    border-color: var(--border-light);
    background: rgba(255, 255, 255, 0.06);
}

.cat-btn.active {
    color: #fff;
    background: var(--gradient-1);
    border-color: transparent;
    box-shadow: 0 4px 20px rgba(0, 102, 255, 0.3);
}

/* 子分类按钮 */
.product-subcategories {
    display: none;
    gap: 8px;
    flex-wrap: wrap;
    max-width: var(--max-width);
    margin: 0 auto 20px;
    padding: 0 12px;
}
.sub-btn {
    padding: 6px 16px;
    border-radius: 16px;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text2);
    transition: all 0.2s;
    font-family: inherit;
}
.sub-btn:hover { color: #fff; border-color: var(--border-light); }
.sub-btn.active {
    color: #fff;
    background: rgba(0, 102, 255, 0.2);
    border-color: var(--primary);
}

/* 产品子分类标签 */
.product-sub-tag {
    display: inline-block;
    font-size: 11px;
    padding: 3px 10px;
    border-radius: 10px;
    background: rgba(0, 212, 170, 0.1);
    color: var(--accent);
    margin-bottom: 8px;
    font-weight: 500;
}

/* 产品空状态 */
.product-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 80px 20px;
    color: var(--text3);
}
.product-empty i {
    font-size: 48px;
    opacity: 0.3;
    margin-bottom: 16px;
}
.product-empty p {
    font-size: 16px;
    margin-top: 12px;
}

/* 产品图片占位符 */
.product-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    color: var(--text3);
    gap: 10px;
    background: linear-gradient(135deg, rgba(0,102,255,0.03), rgba(0,212,170,0.03));
}
.product-placeholder i {
    font-size: 36px;
    opacity: 0.25;
}
.product-placeholder span {
    font-size: 12px;
    opacity: 0.5;
}
.product-card.no-image {
    border-style: dashed;
    border-color: var(--border);
    opacity: 0.7;
}
.product-card.no-image:hover {
    opacity: 1;
    border-color: var(--border-light);
}

.product-grid {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.product-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition);
    cursor: pointer;
    backdrop-filter: blur(16px) saturate(150%);
    -webkit-backdrop-filter: blur(16px) saturate(150%);
}

.product-card:hover {
    border-color: var(--border-light);
    transform: translateY(-8px);
    box-shadow: var(--shadow-glow);
}

.product-image {
    aspect-ratio: 16/10;
    position: relative;
    overflow: hidden;
    background: var(--dark-card);
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s ease;
}

.product-card:hover .product-image img {
    transform: scale(1.08);
}

.product-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(6, 10, 20, 0.6) 100%);
    pointer-events: none;
}

.product-tag {
    position: absolute;
    top: 14px;
    left: 14px;
    padding: 5px 14px;
    border-radius: 14px;
    font-size: 12px;
    font-weight: 600;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--accent);
    z-index: 1;
    letter-spacing: 0.5px;
}

.product-body {
    padding: 24px 26px;
}

.product-body h4 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: 0.5px;
}

.product-body p {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.6;
}

.product-body .product-cat-label {
    display: inline-flex;
    align-items: center;
    font-size: 13px;
    font-weight: 500;
    color: var(--primary-light);
    margin-top: 14px;
    padding: 6px 14px;
    border-radius: 14px;
    background: rgba(0, 102, 255, 0.08);
    border: 1px solid rgba(0, 102, 255, 0.1);
    transition: all var(--transition);
    gap: 4px;
}
.product-card:hover .product-cat-label {
    background: rgba(0, 102, 255, 0.15);
    color: var(--accent);
}

/* ==================== 新闻资讯 ==================== */
.news {
    background: linear-gradient(180deg, var(--dark-bg) 0%, #080d1a 50%, var(--dark-bg) 100%);
}

.news-grid {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.news-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition);
    display: block;
    backdrop-filter: blur(16px) saturate(150%);
    -webkit-backdrop-filter: blur(16px) saturate(150%);
}

.news-card:hover {
    border-color: var(--border-light);
    transform: translateY(-6px);
    box-shadow: var(--shadow-glow);
}

.news-image {
    aspect-ratio: 16/9;
    position: relative;
    overflow: hidden;
    background: var(--dark-card);
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s ease;
}
.news-card:hover .news-image img {
    transform: scale(1.08);
}

.news-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 40%, rgba(6, 10, 20, 0.5) 100%);
    pointer-events: none;
}

.news-image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    color: rgba(255, 255, 255, 0.15);
    background: linear-gradient(135deg, #0a1628, #102040);
}

.news-image-placeholder.accent1 { background: linear-gradient(135deg, #0a1820, #0d3030); }
.news-image-placeholder.accent2 { background: linear-gradient(135deg, #0d0a20, #23104e); }
.news-image-placeholder.accent3 { background: linear-gradient(135deg, #1a0a18, #301828); }
.news-image-placeholder.accent4 { background: linear-gradient(135deg, #0a1a0e, #163020); }

.news-badge {
    position: absolute;
    top: 14px;
    left: 14px;
    padding: 5px 14px;
    border-radius: 14px;
    font-size: 12px;
    font-weight: 600;
    background: rgba(220, 38, 38, 0.25);
    backdrop-filter: blur(12px);
    color: #fca5a5;
    z-index: 1;
    border: 1px solid rgba(220, 38, 38, 0.2);
}

.news-body {
    padding: 24px 24px;
}

.news-date {
    font-size: 12px;
    color: var(--text-muted);
    display: block;
    margin-bottom: 10px;
    letter-spacing: 1px;
}

.news-body h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 14px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    letter-spacing: 0.3px;
}

.news-body p {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 14px;
}

.news-link {
    font-size: 13px;
    font-weight: 600;
    color: var(--primary-light);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all var(--transition);
}

.news-card:hover .news-link {
    gap: 12px;
    color: var(--accent);
}

/* ---- 新闻列表样式（数字+标题） ---- */
.news-list {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0;
}
.news-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 22px 28px;
    border-bottom: 1px solid var(--glass-border);
    transition: all var(--transition);
    text-decoration: none;
    color: inherit;
    background: transparent;
    position: relative;
}
.news-item:first-child {
    border-top: 1px solid var(--glass-border);
}
.news-item:hover {
    background: var(--glass-bg);
    padding-left: 36px;
}
.news-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 0;
    background: var(--gradient-1);
    transition: width 0.3s ease;
}
.news-item:hover::before {
    width: 3px;
}
.news-num {
    font-size: 28px;
    font-weight: 900;
    color: rgba(0, 130, 255, 0.5);
    min-width: 48px;
    text-align: center;
    font-variant-numeric: tabular-nums;
    transition: color var(--transition);
    line-height: 1;
}
.news-item:hover .news-num {
    color: #3d9bff;
}
.news-item-body {
    flex: 1;
    min-width: 0;
}
.news-item-body h4 {
    font-size: 15px;
    font-weight: 600;
    line-height: 1.5;
    margin-bottom: 4px;
    color: var(--text-primary);
    transition: color var(--transition);
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-item:hover .news-item-body h4 {
    color: #fff;
}
.news-item-body p {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-item > .news-date {
    font-size: 12px;
    color: var(--text-muted);
    white-space: nowrap;
    margin-bottom: 0;
}
.news-arrow {
    font-size: 12px;
    color: var(--text-muted);
    transition: all var(--transition);
    margin-left: 4px;
}
.news-item:hover .news-arrow {
    color: var(--accent);
    transform: translateX(4px);
}

@media (max-width: 768px) {
    .news-item { padding: 16px 16px; gap: 14px; }
    .news-item:hover { padding-left: 20px; }
    .news-num { font-size: 22px; min-width: 36px; }
    .news-item-body h4 { font-size: 14px; }
    .news-item > .news-date { display: none; }
}

/* ==================== 合作伙伴 ==================== */
.partners {
    background: var(--dark-bg);
}

.partner-grid {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 16px;
}

.partner-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 20px 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0;
    transition: all var(--transition);
    text-align: center;
    backdrop-filter: blur(16px) saturate(150%);
    -webkit-backdrop-filter: blur(16px) saturate(150%);
    min-height: 90px;
}
.partner-card:hover {
    border-color: var(--border-light);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
    background: var(--dark-card-hover);
}

.partner-initial {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.12), rgba(0, 212, 170, 0.08));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    font-weight: 800;
    color: var(--primary-light);
    transition: all var(--transition);
    border: 1px solid rgba(0, 102, 255, 0.1);
    letter-spacing: 0;
}
.partner-logo-img {
    width: 80px;
    height: 56px;
    object-fit: contain;
    border-radius: 6px;
    transition: all var(--transition);
    filter: brightness(0.9) contrast(1.1);
}
.partner-card:hover .partner-logo-img {
    transform: scale(1.08);
    filter: brightness(1) contrast(1.1);
}
.partner-card:hover .partner-initial {
    background: var(--gradient-1);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 6px 20px rgba(0, 102, 255, 0.3);
    transform: scale(1.08);
}

.partner-name {
    display: none;
}

/* ==================== 核心能力 ==================== */
.capabilities {
    background: linear-gradient(180deg, var(--dark-bg) 0%, #080d1a 50%, var(--dark-bg) 100%);
}

.capa-grid {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.capa-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 40px 30px;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(16px) saturate(150%);
    -webkit-backdrop-filter: blur(16px) saturate(150%);
}
.capa-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-1);
    opacity: 0;
    transition: opacity var(--transition);
}
.capa-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: var(--gradient-1);
    opacity: 0.02;
    transform: translate(30px, 30px);
    transition: opacity var(--transition);
}
.capa-card:hover {
    border-color: var(--border-light);
    transform: translateY(-6px);
    box-shadow: var(--shadow-glow);
}
.capa-card:hover::before { opacity: 1; }
.capa-card:hover::after { opacity: 0.06; }

.capa-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.capa-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-sm);
    background: rgba(0, 102, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: var(--primary-light);
    border: 1px solid rgba(0, 102, 255, 0.08);
    transition: all var(--transition);
}
.capa-card:hover .capa-icon {
    background: var(--gradient-1);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 6px 20px rgba(0, 102, 255, 0.3);
}

.capa-card h3 {
    font-size: 19px;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.capa-card ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.capa-card ul li {
    font-size: 14px;
    color: var(--text-secondary);
    padding-left: 20px;
    position: relative;
    line-height: 1.6;
}
.capa-card ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 6px var(--accent-glow);
}

/* ==================== 荣誉资质 ==================== */
.certificates {
    background: var(--dark-bg);
    position: relative;
}
.certificates::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse at 70% 20%, rgba(0, 102, 255, 0.04) 0%, transparent 50%),
        radial-gradient(ellipse at 30% 80%, rgba(0, 212, 170, 0.03) 0%, transparent 50%);
    pointer-events: none;
}

.cert-grid {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    position: relative;
    z-index: 1;
}

.cert-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 36px 24px;
    text-align: center;
    transition: all var(--transition);
    backdrop-filter: blur(16px) saturate(150%);
    -webkit-backdrop-filter: blur(16px) saturate(150%);
    position: relative;
    overflow: hidden;
}
.cert-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius);
    background: linear-gradient(135deg, rgba(0, 212, 170, 0.03) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--transition);
}
.cert-card:hover::before { opacity: 1; }
.cert-card:hover {
    border-color: var(--border-light);
    box-shadow: var(--shadow-glow);
    transform: translateY(-5px);
}

.cert-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: rgba(0, 212, 170, 0.06);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--accent);
    margin: 0 auto 18px;
    border: 1px solid rgba(0, 212, 170, 0.1);
    transition: all var(--transition);
}
.cert-card:hover .cert-icon {
    background: var(--gradient-accent);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 8px 24px rgba(0, 212, 170, 0.3);
    transform: scale(1.1) rotate(5deg);
}

.cert-card h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: 0.5px;
}

.cert-card p {
    font-size: 13px;
    color: var(--text-muted);
}

/* ==================== CTA Banner ==================== */
.cta-banner {
    background:
        linear-gradient(135deg, rgba(0, 102, 255, 0.06) 0%, rgba(0, 212, 170, 0.04) 100%),
        var(--dark-bg);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.cta-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -20%;
    width: 60%;
    height: 200%;
    background: radial-gradient(ellipse, rgba(0, 102, 255, 0.04) 0%, transparent 70%);
    pointer-events: none;
    animation: ctaGlow 8s ease-in-out infinite alternate;
}

@keyframes ctaGlow {
    0% { transform: translateX(0); }
    100% { transform: translateX(80%); }
}

.cta-content {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.cta-content h2 {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: 1px;
}

.cta-content p {
    font-size: 17px;
    color: var(--text-secondary);
    margin-bottom: 32px;
    line-height: 1.8;
}

.cta-buttons {
    display: flex;
    gap: 18px;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-banner .btn-outline {
    border-color: rgba(0, 102, 255, 0.25);
}
.cta-banner .btn-outline:hover {
    background: rgba(0, 102, 255, 0.08);
    border-color: rgba(0, 102, 255, 0.5);
}

/* ==================== 联系我们 ==================== */
.contact {
    background: var(--dark-bg);
}

.contact-grid {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 52px;
    align-items: start;
}

.contact-info h3 {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 36px;
    letter-spacing: 1px;
}

.contact-items {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-item {
    display: flex;
    gap: 18px;
    padding: 20px 22px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    transition: all var(--transition);
    backdrop-filter: blur(16px) saturate(150%);
    -webkit-backdrop-filter: blur(16px) saturate(150%);
}

.contact-item:hover {
    border-color: var(--border-light);
    background: var(--dark-card-hover);
    transform: translateX(4px);
}

.contact-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    border-radius: var(--radius-sm);
    background: rgba(0, 102, 255, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--primary-light);
    border: 1px solid rgba(0, 102, 255, 0.08);
    transition: all var(--transition);
}
.contact-item:hover .contact-icon {
    background: var(--gradient-1);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 4px 16px rgba(0, 102, 255, 0.25);
}

.contact-text {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.contact-label {
    font-size: 11px;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 2px;
    text-transform: uppercase;
}

.contact-value {
    font-size: 15px;
    color: var(--text-primary);
}
.contact-value small {
    font-size: 15px;
    color: #ffffff;
}

.contact-map {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 76px;
}

.map-container {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-card);
}

.leaflet-map {
    width: 100%;
    min-height: 340px;
    height: 340px;
    z-index: 1;
}

/* Leaflet 深色主题覆盖 */
.leaflet-container {
    background: #0c1222 !important;
    font-family: inherit;
}
.leaflet-tile-pane {
    filter: brightness(0.7) contrast(1.2) saturate(0.3) hue-rotate(180deg) invert(1);
}
.leaflet-control-zoom a {
    background: var(--dark-card) !important;
    color: #fff !important;
    border-color: var(--border) !important;
}
.leaflet-control-zoom a:hover {
    background: var(--dark-card-hover) !important;
}
.leaflet-control-attribution {
    background: rgba(6, 10, 20, 0.8) !important;
    color: var(--text-muted) !important;
    font-size: 10px !important;
}
.leaflet-control-attribution a {
    color: var(--primary-light) !important;
}
.leaflet-popup-content-wrapper {
    background: var(--dark-card) !important;
    color: var(--text-primary) !important;
    border-radius: var(--radius) !important;
    border: 1px solid var(--border-light) !important;
    box-shadow: 0 8px 32px rgba(0,0,0,0.5) !important;
}
.leaflet-popup-tip {
    background: var(--dark-card) !important;
}

/* 地图底部信息覆盖 */
.map-overlay-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 14px 20px;
    background: linear-gradient(180deg, transparent, rgba(6, 10, 20, 0.9));
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    z-index: 10;
    pointer-events: none;
}
.map-overlay-info i {
    color: var(--primary-light);
    font-size: 16px;
    filter: drop-shadow(0 0 4px rgba(0, 102, 255, 0.4));
}

.contact-qr {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 24px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    backdrop-filter: blur(6px);
}
.contact-qr img {
    width: 120px;
    height: 120px;
    border-radius: var(--radius-sm);
    background: #fff;
    padding: 8px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}
.contact-qr span {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* ==================== 页脚 ==================== */
.footer {
    background: #040710;
    border-top: 1px solid var(--border);
    position: relative;
}
.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 102, 255, 0.2), rgba(0, 212, 170, 0.2), transparent);
}

.footer-top {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 72px 32px 44px;
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 44px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 18px;
}

.footer-logo .logo-icon {
    position: relative;
    overflow: hidden;
}
.footer-logo .logo-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

.footer-brand p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 22px;
    color: #fff;
    letter-spacing: 0.5px;
}

.footer-links ul li {
    margin-bottom: 12px;
}
.footer-links ul li a {
    font-size: 14px;
    color: var(--text-secondary);
    transition: all var(--transition);
    position: relative;
    padding-left: 0;
}
.footer-links ul li a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 0;
    height: 1px;
    background: var(--accent);
    transition: width var(--transition);
}
.footer-links ul li a:hover {
    color: var(--accent);
    padding-left: 14px;
}
.footer-links ul li a:hover::before {
    width: 8px;
}

.footer-contact p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.footer-contact p i {
    color: var(--primary-light);
    font-size: 14px;
    width: 16px;
}

.footer-bottom {
    border-top: 1px solid var(--border);
    padding: 22px 32px;
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}
.footer-bottom a {
    color: var(--text-muted);
    transition: color var(--transition);
}
.footer-bottom a:hover {
    color: var(--accent);
}
.footer-bottom .admin-link {
    opacity: 0.35;
}
.footer-bottom .admin-link:hover {
    opacity: 1;
}

/* ==================== 留言弹窗 ==================== */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 2000;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(12px);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-overlay.open {
    display: flex;
}

.modal-container {
    background: var(--dark-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 44px 40px;
    max-width: 560px;
    width: 100%;
    position: relative;
    box-shadow: 0 32px 100px rgba(0, 0, 0, 0.7);
    animation: modalIn 0.4s ease;
    overflow: hidden;
}

.modal-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-1);
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.92) translateY(24px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-close {
    position: absolute;
    top: 18px;
    right: 18px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 16px;
    transition: all var(--transition);
}
.modal-close:hover {
    background: rgba(255,255,255,0.06);
    color: #fff;
    transform: rotate(90deg);
}

.modal-header {
    text-align: center;
    margin-bottom: 32px;
}

.modal-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--gradient-1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: #fff;
    margin: 0 auto 18px;
    box-shadow: 0 8px 28px rgba(0, 102, 255, 0.3);
}

.modal-header h3 {
    font-size: 26px;
    font-weight: 800;
    margin-bottom: 10px;
    letter-spacing: 1px;
}

.modal-header p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.form-row {
    margin-bottom: 18px;
}
.form-row.two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
    letter-spacing: 0.5px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.02);
    color: #fff;
    font-size: 15px;
    transition: all var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.08), 0 0 20px rgba(0, 102, 255, 0.05);
    background: rgba(0, 102, 255, 0.02);
}

.form-group textarea {
    resize: vertical;
    min-height: 110px;
}

.form-group select option {
    background: var(--dark-card);
    color: #fff;
}

.btn-submit {
    width: 100%;
    padding: 16px;
    border-radius: var(--radius);
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    background: var(--gradient-1);
    transition: all var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 20px rgba(0, 102, 255, 0.25);
    position: relative;
    overflow: hidden;
}

.btn-submit::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.12), transparent);
    transition: left 0.5s ease;
}
.btn-submit:hover::before { left: 100%; }

.btn-submit:hover {
    box-shadow: 0 8px 32px rgba(0, 102, 255, 0.45);
    transform: translateY(-2px);
}

/* ==================== 返回顶部 ==================== */
.back-to-top {
    position: fixed;
    bottom: 36px;
    right: 36px;
    z-index: 999;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: #fff;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
    transition: all var(--transition);
    box-shadow: var(--shadow-card);
    backdrop-filter: blur(10px);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--gradient-1);
    border-color: transparent;
    box-shadow: 0 6px 28px rgba(0, 102, 255, 0.4);
    transform: translateY(-4px);
}

/* ==================== 响应式 ==================== */
@media (max-width: 1024px) {
    .about-grid {
        grid-template-columns: 1fr;
    }
    .timeline {
        grid-template-columns: repeat(2, 1fr);
    }
    .timeline::before {
        display: none;
    }
    .advantage-cards {
        grid-template-columns: repeat(2, 1fr);
    }
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .contact-grid {
        grid-template-columns: 1fr;
    }
    .contact-map { margin-top: 0; }
    .partner-grid { grid-template-columns: repeat(3, 1fr); }
    .capa-grid { grid-template-columns: 1fr; }
    .cert-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-top {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    section {
        padding: 80px 20px;
    }

    .nav-links {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: rgba(6, 10, 20, 0.97);
        backdrop-filter: blur(24px);
        flex-direction: column;
        padding: 20px;
        gap: 4px;
        border-bottom: 1px solid var(--border);
        display: none;
    }
    .nav-links.open {
        display: flex;
    }

    .menu-toggle {
        display: flex;
    }

    .hero-stats {
        gap: 24px;
        flex-wrap: wrap;
    }
    .stat-number {
        font-size: 32px;
    }



    .timeline {
        grid-template-columns: 1fr;
    }
    .advantage-cards {
        grid-template-columns: 1fr;
    }
    .product-categories {
        gap: 6px;
    }
    .cat-btn {
        padding: 8px 14px;
        font-size: 12px;
    }
    .product-grid {
        grid-template-columns: 1fr;
    }
    .news-grid {
        grid-template-columns: 1fr;
    }
    .partner-grid { grid-template-columns: repeat(2, 1fr); }
    .cert-grid { grid-template-columns: 1fr; }
    .footer-top {
        grid-template-columns: 1fr;
        gap: 36px;
    }
    .footer-bottom {
        flex-direction: column;
        gap: 8px;
    }
    .btn-message {
        padding: 8px 14px;
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    .hero-stats {
        gap: 16px;
    }
    .stat-item {
        width: 45%;
    }
    .hero-buttons {
        flex-direction: column;
    }
    .form-row.two-col {
        grid-template-columns: 1fr;
    }
}

/* ==================== 光标跟随光效 ==================== */
.cursor-glow {
    position: fixed;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 102, 255, 0.06) 0%, transparent 70%);
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    transition: opacity 0.3s ease;
    opacity: 0;
}

.cursor-glow.active {
    opacity: 1;
}

/* Hero 装饰网格 */
.hero-grid-lines {
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    opacity: 0.03;
    background-image:
        linear-gradient(rgba(255,255,255,0.5) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.5) 1px, transparent 1px);
    background-size: 80px 80px;
    mask-image: radial-gradient(ellipse 60% 60% at 50% 50%, black 0%, transparent 100%);
    -webkit-mask-image: radial-gradient(ellipse 60% 60% at 50% 50%, black 0%, transparent 100%);
}