/* ========================================
   高斯曼科技 - 企业官网样式
   白底科技感主题 · 蓝橙点缀 · 响应式设计
   ======================================== */

/* ---------- CSS 变量 ---------- */
:root {
    --c-bg: #ffffff;
    --c-bg-2: #f0f4f9;
    --c-bg-3: #e8edf5;
    --c-surface: rgba(255, 255, 255, 0.72);
    --c-surface-hover: rgba(255, 255, 255, 0.92);
    --c-primary: #2563eb;
    --c-primary-dim: #3b82f6;
    --c-primary-light: #60a5fa;
    --c-primary-glow: rgba(37, 99, 235, 0.18);
    --c-accent: #ff6b1a;
    --c-accent-dim: #f97316;
    --c-accent-glow: rgba(255, 107, 26, 0.15);
    --c-text: #0f172a;
    --c-text-dim: #475569;
    --c-text-muted: #94a3b8;
    --c-border: rgba(37, 99, 235, 0.1);
    --c-border-hover: rgba(37, 99, 235, 0.25);
    --c-border-orange: rgba(255, 107, 26, 0.15);
    --gradient-primary: linear-gradient(135deg, #2563eb 0%, #3b82f6 50%, #60a5fa 100%);
    --gradient-accent: linear-gradient(135deg, #ff6b1a 0%, #f97316 100%);
    --gradient-text: linear-gradient(135deg, #2563eb 0%, #60a5fa 100%);
    --gradient-bg: linear-gradient(180deg, #f0f4f9 0%, #e8edf5 40%, #f5f7fa 70%, #ffffff 100%);
    --shadow-glow: 0 0 30px rgba(37, 99, 235, 0.08);
    --shadow-card: 0 4px 24px rgba(15, 23, 42, 0.06);
    --shadow-hover: 0 8px 40px rgba(37, 99, 235, 0.12);
    --shadow-orange: 0 4px 20px rgba(255, 107, 26, 0.1);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-sans: 'Segoe UI', 'Microsoft YaHei', 'PingFang SC', -apple-system, sans-serif;
}

/* ---------- 基础重置 ---------- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-sans);
    background: var(--c-bg);
    color: var(--c-text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    /* 全页细微纹理：打破纯白单调感 */
    background-image:
        radial-gradient(ellipse 600px 400px at 10% 20%, rgba(37, 99, 235, 0.03) 0%, transparent 100%),
        radial-gradient(ellipse 500px 350px at 90% 60%, rgba(255, 107, 26, 0.02) 0%, transparent 100%);
    background-attachment: fixed;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ---------- 通用容器 ---------- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 90px 0;
    position: relative;
}

/* 区块之间渐变分隔线 */
.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg,
        transparent 0%,
        rgba(37, 99, 235, 0.15) 20%,
        rgba(255, 107, 26, 0.08) 50%,
        rgba(37, 99, 235, 0.15) 80%,
        transparent 100%
    );
}

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

.section-tag {
    display: inline-block;
    font-size: 13px;
    letter-spacing: 3px;
    color: var(--c-primary);
    font-weight: 600;
    margin-bottom: 12px;
    padding: 4px 16px;
    border: 1px solid var(--c-border);
    border-radius: 20px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.06) 0%, rgba(255, 107, 26, 0.02) 100%);
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--c-text);
    margin-bottom: 16px;
}

.section-line {
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--c-primary) 0%, var(--c-accent) 100%);
    margin: 0 auto 16px;
    border-radius: 2px;
}

.section-subtitle {
    color: var(--c-text-dim);
    font-size: 16px;
}

/* ---------- 玻璃拟态 ---------- */
.glass {
    background: var(--c-surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
}

/* ---------- 导航栏 ---------- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 72px;
    z-index: 1000;
    background: #ffffff;
    border-bottom: 1px solid #eef2f7;
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: 0 2px 16px rgba(15, 23, 42, 0.06);
}

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

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

.nav-logo-img {
    height: 38px;
    width: auto;
}

.nav-logo-text {
    font-size: 18px;
    font-weight: 700;
    color: var(--c-text);
    letter-spacing: 1px;
}

.nav-menu {
    display: flex;
    gap: 4px;
}

.nav-link {
    display: block;
    padding: 10px 20px;
    color: var(--c-text-dim);
    font-size: 15px;
    font-weight: 500;
    border-radius: 0;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover {
    color: var(--c-primary);
}

.nav-link.active {
    color: var(--c-accent);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 3px;
    background: var(--c-accent);
    border-radius: 2px;
}

/* ---------- 导航下拉菜单 ---------- */
.nav-dropdown {
    position: relative;
}

.nav-drop-toggle {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-drop-toggle::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 5px solid currentColor;
    opacity: 0.45;
    transition: var(--transition);
}

.nav-dropdown:hover .nav-drop-toggle {
    color: var(--c-accent);
}

.nav-dropdown:hover .nav-drop-toggle::after {
    transform: rotate(180deg);
    opacity: 1;
}

.nav-drop-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: -12px;
    min-width: 170px;
    background: #fff;
    border: 1px solid #eef2f7;
    border-radius: 10px;
    box-shadow: 0 12px 40px rgba(15, 23, 42, 0.1);
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all 0.25s ease;
    z-index: 100;
}

/* 产品中心宽下拉菜单（模仿Victor橙色大下拉） */
.nav-drop-wide {
    min-width: 240px;
    left: 50%;
    margin-left: -120px;
    padding: 8px 0;
    column-count: 1;
}

/* 产品中心hover时下拉菜单带左侧橙色装饰条 */
.nav-dropdown:nth-child(3):hover .nav-drop-menu {
    border-left: 3px solid var(--c-accent);
}

.nav-dropdown:hover .nav-drop-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-drop-menu a {
    display: block;
    padding: 10px 22px;
    font-size: 14px;
    color: var(--c-text-dim);
    text-decoration: none;
    transition: all 0.2s ease;
    position: relative;
}

.nav-drop-menu a:hover {
    color: var(--c-accent);
    background: rgba(255, 107, 26, 0.05);
    padding-left: 26px;
}

.drop-item-disabled {
    position: relative;
    cursor: default;
}

.drop-item-disabled:hover {
    background: transparent !important;
    color: var(--c-text-muted) !important;
    padding-left: 22px !important;
}

.drop-item-disabled::after {
    content: '敬请期待';
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 11px;
    color: var(--c-text-muted);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 6px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--c-text);
    border-radius: 1px;
    transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

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

/* Hero 底部渐变过渡：避免纯白突然跳到灰色区块 */
.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 120px;
    background: linear-gradient(180deg, transparent 0%, var(--c-bg-2) 100%);
    z-index: 1;
}

.hero-bg-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(37, 99, 235, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(37, 99, 235, 0.04) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { background-position: 0 0; }
    100% { background-position: 50px 50px; }
}

.hero-bg-glow {
    position: absolute;
    width: 800px;
    height: 800px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.12) 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: glowPulse 4s ease-in-out infinite;
}

.hero-bg-glow-orange {
    position: absolute;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 107, 26, 0.08) 0%, transparent 70%);
    top: 30%;
    right: 10%;
    animation: glowPulse 5s ease-in-out infinite reverse;
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.6; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 1; transform: translate(-50%, -50%) scale(1.1); }
}

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

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    opacity: 0.4;
    animation: particleFloat linear infinite;
}

.particle-blue {
    background: var(--c-primary);
    box-shadow: 0 0 8px var(--c-primary), 0 0 3px rgba(37, 99, 235, 0.4);
}

.particle-orange {
    background: var(--c-accent);
    box-shadow: 0 0 8px var(--c-accent), 0 0 3px rgba(255, 107, 26, 0.4);
}

@keyframes particleFloat {
    0% { transform: translateY(100vh) translateX(0); opacity: 0; }
    10% { opacity: 0.5; }
    90% { opacity: 0.5; }
    100% { transform: translateY(-10vh) translateX(50px); opacity: 0; }
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    padding: 0 24px;
    animation: heroFadeIn 1s ease-out;
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 18px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.06) 0%, rgba(255, 107, 26, 0.03) 100%);
    border: 1px solid var(--c-border);
    border-radius: 20px;
    color: var(--c-primary);
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 24px;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background: var(--c-accent);
    border-radius: 50%;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(255, 107, 26, 0.4); }
    50% { box-shadow: 0 0 0 8px transparent; }
}

.hero-title {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 24px;
}

.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-title-sub {
    color: var(--c-text);
}

.hero-desc {
    font-size: 16px;
    color: var(--c-text-dim);
    line-height: 1.8;
    margin-bottom: 40px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 60px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: 0 4px 20px rgba(37, 99, 235, 0.25);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(37, 99, 235, 0.35);
}

.btn-outline {
    background: rgba(255, 255, 255, 0.6);
    color: var(--c-text);
    border: 1px solid var(--c-border-hover);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.btn-outline:hover {
    background: rgba(37, 99, 235, 0.08);
    border-color: var(--c-primary);
    box-shadow: var(--shadow-glow);
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
    padding: 20px 32px;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
}

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

.stat-num {
    font-size: 36px;
    font-weight: 800;
    color: var(--c-primary);
    display: inline;
}

.stat-unit {
    font-size: 20px;
    font-weight: 700;
    color: var(--c-primary);
    display: inline;
}

.stat-label {
    font-size: 13px;
    color: var(--c-text-muted);
    margin-top: 4px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: linear-gradient(180deg, transparent 0%, var(--c-border-hover) 50%, transparent 100%);
}

.hero-scroll-hint {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: var(--c-text-muted);
    font-size: 12px;
    animation: scrollHint 2s ease-in-out infinite;
}

@keyframes scrollHint {
    0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.5; }
    50% { transform: translateX(-50%) translateY(8px); opacity: 1; }
}

.scroll-arrow {
    width: 1px;
    height: 30px;
    background: var(--c-text-muted);
    margin: 8px auto 0;
}

/* ---------- 关于我们 ---------- */
.about {
    background: var(--c-bg-2);
    background-image:
        radial-gradient(ellipse 500px 350px at 5% 50%, rgba(37, 99, 235, 0.04) 0%, transparent 100%),
        radial-gradient(ellipse 400px 300px at 95% 80%, rgba(255, 107, 26, 0.03) 0%, transparent 100%);
}

.about-content {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

/* 顶部：公司介绍通栏 */
.about-intro {
    max-width: 860px;
    margin: 0 auto;
    text-align: center;
}

.about-subtitle {
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
}

.about-desc {
    color: var(--c-text-dim);
    font-size: 15px;
    line-height: 1.9;
    margin-bottom: 16px;
    text-align: left;
}

/* 底部：左右对称双列 */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 36px;
    align-items: stretch;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 36px 32px 28px;
    border-radius: var(--radius-lg);
    position: relative;
}

/* 特性卡片顶部发光线 */
.about-features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 24px;
    right: 24px;
    height: 2px;
    background: linear-gradient(90deg, transparent 0%, var(--c-accent) 30%, var(--c-primary) 70%, transparent 100%);
    border-radius: 2px;
    opacity: 0.7;
}

.features-header {
    margin-bottom: 24px;
    text-align: center;
}

.features-title {
    display: block;
    font-size: 20px;
    font-weight: 700;
    color: var(--c-text);
    margin-bottom: 4px;
    letter-spacing: 1px;
}

.features-subtitle {
    font-size: 13px;
    color: var(--c-text-muted);
}

.feature-item {
    display: flex;
    gap: 14px;
    align-items: center;
    padding: 18px 20px;
    border-radius: var(--radius-md);
    transition: var(--transition);
    border: 1px solid transparent;
}

.feature-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.08) 0%, rgba(37, 99, 235, 0.02) 100%);
    border: 1px solid var(--c-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--c-primary);
    flex-shrink: 0;
    transition: var(--transition);
}

.feature-icon-orange {
    background: linear-gradient(135deg, rgba(255, 107, 26, 0.08) 0%, rgba(255, 107, 26, 0.02) 100%);
    border-color: var(--c-border-orange);
    color: var(--c-accent);
}

.feature-item:hover .feature-icon {
    transform: scale(1.1);
    box-shadow: var(--shadow-glow);
}

.feature-item:hover .feature-icon-orange {
    box-shadow: var(--shadow-orange);
}

.feature-item h4 {
    font-size: 15px;
    color: var(--c-text);
    margin-bottom: 4px;
}

.feature-item p {
    font-size: 13px;
    color: var(--c-text-muted);
}

.about-visual {
    position: relative;
    display: flex;
    flex-direction: column;
}

.about-visual > .about-matrix-card {
    flex: 1;
}

.about-card {
    padding: 24px;
    box-shadow: var(--shadow-card);
    position: relative;
    z-index: 2;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(240, 244, 249, 0.9) 100%);
}

.about-card-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--c-border);
    margin-bottom: 20px;
}

.card-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.card-dot.red { background: #ff5f57; }
.card-dot.yellow { background: #febc2e; }
.card-dot.green { background: #28c840; }

.card-title-mini {
    margin-left: 12px;
    font-size: 12px;
    color: var(--c-text-muted);
    letter-spacing: 1px;
}

.data-line {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.data-label {
    font-size: 13px;
    color: var(--c-text-dim);
    width: 80px;
    flex-shrink: 0;
}

.data-bar {
    flex: 1;
    height: 8px;
    background: linear-gradient(90deg, rgba(37, 99, 235, 0.06) 0%, rgba(240, 244, 249, 0.8) 100%);
    border-radius: 4px;
    overflow: hidden;
}

.data-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 4px;
    width: 0;
    transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.data-fill-orange {
    height: 100%;
    background: var(--gradient-accent);
    border-radius: 4px;
    width: 0;
    transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.data-value {
    font-size: 13px;
    color: var(--c-primary);
    font-weight: 600;
    width: 36px;
    text-align: right;
}

.about-glow {
    position: absolute;
    width: 350px;
    height: 350px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.18) 0%, rgba(255, 107, 26, 0.06) 40%, transparent 70%);
    top: -60px;
    right: -60px;
    z-index: 1;
    animation: glowPulse 6s ease-in-out infinite;
}

/* ---------- 产品矩阵卡片（替代进度条） ---------- */
.about-matrix-card {
    padding: 36px 32px 28px;
    border-radius: var(--radius-lg);
    position: relative;
    z-index: 2;
    /* 科技感渐变边框 */
    border: 1px solid rgba(37, 99, 235, 0.12);
    box-shadow:
        0 8px 40px rgba(37, 99, 235, 0.08),
        0 0 0 1px rgba(255, 255, 255, 0.6) inset;
    /* 与左侧about-features等高：flex子项自动拉伸 */
}

/* 矩阵卡片顶部发光线条 */
.about-matrix-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 24px;
    right: 24px;
    height: 2px;
    background: linear-gradient(90deg, transparent 0%, var(--c-primary) 30%, var(--c-accent) 70%, transparent 100%);
    border-radius: 2px;
    opacity: 0.7;
}

.matrix-header {
    margin-bottom: 28px;
    text-align: center;
    position: relative;
}

.matrix-title {
    display: block;
    font-size: 20px;
    font-weight: 700;
    color: var(--c-text);
    margin-bottom: 4px;
    letter-spacing: 1px;
}

.matrix-subtitle {
    font-size: 13px;
    color: var(--c-text-muted);
}

.matrix-grid {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 24px;
}

.matrix-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 22px 18px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.04), rgba(255, 107, 26, 0.02));
    border: 1px solid rgba(37, 99, 235, 0.1);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

/* 科技感：左侧竖线装饰 */
.matrix-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--c-primary) 0%, var(--c-accent) 100%);
    opacity: 0;
    transition: var(--transition);
}

.matrix-item:hover {
    transform: translateX(6px);
    border-color: rgba(37, 99, 235, 0.25);
    box-shadow: 0 6px 24px rgba(37, 99, 235, 0.1);
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.07), rgba(255, 107, 26, 0.03));
}

.matrix-item:hover::before {
    opacity: 1;
}

.matrix-icon {
    flex-shrink: 0;
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.12), rgba(59, 130, 246, 0.06));
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(37, 99, 235, 0.1);
}

.matrix-icon-orange {
    background: linear-gradient(135deg, rgba(255, 107, 26, 0.1), rgba(249, 115, 22, 0.06));
}

.matrix-info {
    flex: 1;
    min-width: 0;
}

.matrix-info h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--c-text);
    margin-bottom: 4px;
}

.matrix-info p {
    font-size: 12.5px;
    color: var(--c-text-muted);
    line-height: 1.65;
    margin: 0;
}

.matrix-count {
    flex-shrink: 0;
    font-size: 13px;
    font-weight: 600;
    color: var(--c-primary);
    background: rgba(37, 99, 235, 0.08);
    padding: 4px 12px;
    border-radius: 10px;
    white-space: nowrap;
}

.matrix-footer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding-top: 22px;
    border-top: 1px solid var(--c-border);
    flex-wrap: wrap;
}

.matrix-tag {
    font-size: 11.5px;
    color: var(--c-text-dim);
    white-space: nowrap;
}

.matrix-divider {
    color: var(--c-border-hover);
    font-size: 11px;
}

/* ---------- 产品中心 ---------- */
.products {
    background: var(--c-bg);
    background-image:
        linear-gradient(rgba(37, 99, 235, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(37, 99, 235, 0.02) 1px, transparent 1px);
    background-size: 60px 60px;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.product-card {
    position: relative;
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
    box-shadow: var(--shadow-card);
}

.product-card:hover {
    transform: translateY(-6px);
    border-color: var(--c-border-hover);
    box-shadow: var(--shadow-hover);
}

.product-img-wrap {
    position: relative;
    overflow: hidden;
    background: #f8fafc;
    min-height: 220px;
    max-height: 300px;
}

.product-img-wrap img {
    width: 100%;
    height: auto;
    object-fit: contain;
    padding: 20px 24px;
    transition: transform 0.5s ease;
    display: block;
}

.product-card:hover .product-img-wrap img {
    transform: scale(1.04);
}

.product-img-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 40%, rgba(240, 244, 249, 0.4) 100%);
    transition: var(--transition);
}

.product-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    padding: 4px 12px;
    background: rgba(37, 99, 235, 0.12);
    border: 1px solid var(--c-border-hover);
    border-radius: 12px;
    font-size: 12px;
    color: var(--c-primary);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.08);
}

.badge-orange {
    background: rgba(255, 107, 26, 0.12);
    border-color: rgba(255, 107, 26, 0.3);
    color: var(--c-accent);
    box-shadow: 0 2px 8px rgba(255, 107, 26, 0.08);
}

.product-body {
    padding: 24px;
}

.product-name {
    font-size: 20px;
    font-weight: 700;
    color: var(--c-text);
    margin-bottom: 4px;
}

.product-model {
    font-size: 13px;
    color: var(--c-primary-dim);
    margin-bottom: 12px;
}

.product-desc {
    font-size: 14px;
    color: var(--c-text-dim);
    line-height: 1.7;
    margin-bottom: 16px;
}

.product-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    padding: 3px 10px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.05) 0%, rgba(240, 244, 249, 0.8) 100%);
    border: 1px solid var(--c-border);
    border-radius: 12px;
    font-size: 12px;
    color: var(--c-text-dim);
}

/* ---------- 应用场景 ---------- */
.scenes {
    background: var(--c-bg-2);
    background-image:
        radial-gradient(ellipse 600px 400px at 50% 20%, rgba(37, 99, 235, 0.05) 0%, transparent 100%),
        radial-gradient(ellipse 400px 300px at 80% 90%, rgba(255, 107, 26, 0.03) 0%, transparent 100%);
}

.scenes-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}

.scene-card {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    border: 1px solid var(--c-border);
    transition: var(--transition);
    box-shadow: var(--shadow-card);
}

.scene-card:hover {
    border-color: var(--c-border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.scene-img-wrap {
    position: relative;
    overflow: hidden;
    min-height: 180px;
    max-height: 260px;
}

.scene-img-wrap img {
    width: 100%;
    height: auto;
    object-fit: contain;
    transition: transform 0.5s ease;
}

.scene-card:hover .scene-img-wrap img {
    transform: scale(1.05);
}

.scene-body {
    padding: 24px;
}

.scene-body h3 {
    font-size: 18px;
    color: var(--c-text);
    margin-bottom: 8px;
}

.scene-body p {
    font-size: 14px;
    color: var(--c-text-dim);
    line-height: 1.7;
}

/* ---------- 下载中心（Victor风格文件列表） ---------- */
.download {
    background: var(--c-bg-2);
}

/* 下载横幅标题 */
.dl-banner {
    text-align: center;
    padding: 50px 0 36px;
    position: relative;
}

.dl-title {
    font-size: 34px;
    font-weight: 700;
    color: var(--c-text);
    letter-spacing: 4px;
    margin-bottom: 8px;
}

.dl-subtitle {
    font-size: 15px;
    color: var(--c-accent);
    letter-spacing: 6px;
    font-weight: 600;
    text-transform: uppercase;
}

/* 面包屑 + 工具栏 */
.dl-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 0;
    border-bottom: 1px solid #e2e8f0;
    margin-bottom: 24px;
    gap: 20px;
    flex-wrap: wrap;
}

.dl-breadcrumb {
    font-size: 14px;
    color: var(--c-text-muted);
    white-space: nowrap;
}

.dl-breadcrumb a {
    color: var(--c-text-dim);
    text-decoration: none;
    transition: color 0.2s;
}

.dl-breadcrumb a:hover {
    color: var(--c-accent);
}

.dl-bc-current {
    color: var(--c-accent);
}

.dl-toolbar-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* 分类筛选下拉 */
.dl-filter-wrap {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 14px;
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    color: var(--c-text-dim);
}

.dl-select {
    border: none;
    background: transparent;
    font-size: 14px;
    color: var(--c-text);
    cursor: pointer;
    outline: none;
    padding-right: 4px;
}

.dl-select:focus {
    outline: none;
}

/* 搜索框 */
.dl-search-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.dl-search-input {
    width: 220px;
    padding: 8px 38px 8px 14px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    font-size: 14px;
    outline: none;
    transition: border-color 0.25s;
    background: #fff;
}

.dl-search-input:focus {
    border-color: var(--c-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.08);
}

.dl-search-icon {
    position: absolute;
    right: 12px;
    pointer-events: none;
}

/* 文件表格 */
.dl-table-wrap {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
    border: 1px solid #eef2f7;
}

.dl-table {
    width: 100%;
    border-collapse: collapse;
}

.dl-table thead th {
    padding: 14px 18px;
    font-size: 13px;
    font-weight: 600;
    color: var(--c-text-dim);
    background: #f8fafc;
    border-bottom: 1px solid #eef2f7;
    white-space: nowrap;
}

.dl-table tbody tr {
    transition: background 0.2s;
    border-bottom: 1px solid #f1f5f9;
}

.dl-table tbody tr:last-child {
    border-bottom: none;
}

.dl-table tbody tr:hover {
    background: rgba(37, 99, 235, 0.02);
}

.dl-table tbody td {
    padding: 16px 18px;
    vertical-align: middle;
}

.dl-center {
    text-align: center;
}

/* 文件图标 */
.dl-file-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #f1f5f9;
    position: relative;
}

.dl-file-icon::after {
    content: '';
    display: block;
}

.dl-icon-pdf::after {
    content: 'PDF';
    font-size: 9px;
    font-weight: 700;
    color: #dc2626;
}

.dl-icon-docx::after {
    content: 'W';
    font-size: 11px;
    font-weight: 700;
    color: #2563eb;
}

/* 文件名链接 */
.dl-filename {
    color: var(--c-text);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
}

.dl-filename:hover {
    color: var(--c-accent);
}

/* 类型标签 */
.dl-tag {
    display: inline-block;
    padding: 3px 10px;
    font-size: 11px;
    font-weight: 600;
    border-radius: 4px;
    background: #fef2f2;
    color: #dc2626;
}

.dl-tag-blue {
    background: #eff6ff;
    color: #2563eb;
}

/* 下载按钮 */
.dl-btn-download {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 6px;
    border: 1px solid #e2e8f0;
    color: var(--c-text-dim);
    transition: all 0.2s;
    text-decoration: none;
}

.dl-btn-download:hover {
    border-color: var(--c-accent);
    color: var(--c-accent);
    background: rgba(255, 107, 26, 0.05);
}

/* 空结果提示 */
.dl-empty {
    padding: 60px 24px;
    text-align: center;
    color: var(--c-text-muted);
    font-size: 14px;
}

/* ---------- 服务支持 ---------- */
.service {
    background: var(--c-bg-2);
    background-image:
        radial-gradient(ellipse 500px 350px at 10% 30%, rgba(37, 99, 235, 0.04) 0%, transparent 100%),
        radial-gradient(ellipse 400px 300px at 90% 70%, rgba(255, 107, 26, 0.03) 0%, transparent 100%);
}

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

.service-card {
    position: relative;
    padding: 32px 24px;
    text-align: center;
    transition: var(--transition);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(240, 244, 249, 0.7) 100%);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
}

.service-card:hover {
    transform: translateY(-4px);
    border-color: var(--c-border-hover);
    box-shadow: var(--shadow-hover);
}

.service-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 18px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.08) 0%, rgba(37, 99, 235, 0.02) 100%);
    border: 1px solid var(--c-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--c-primary);
    transition: var(--transition);
}

.service-icon-orange {
    background: linear-gradient(135deg, rgba(255, 107, 26, 0.08) 0%, rgba(255, 107, 26, 0.02) 100%);
    border-color: var(--c-border-orange);
    color: var(--c-accent);
}

.service-card:hover .service-icon {
    transform: scale(1.1);
    box-shadow: var(--shadow-glow);
}

.service-card:hover .service-icon-orange {
    box-shadow: var(--shadow-orange);
}

.service-card h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--c-text);
    margin-bottom: 10px;
}

.service-card p {
    font-size: 13px;
    color: var(--c-text-dim);
    line-height: 1.75;
}

/* ---------- 企业资质 ---------- */
.qualifications {
    background: var(--c-bg);
    background-image:
        linear-gradient(rgba(37, 99, 235, 0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(37, 99, 235, 0.015) 1px, transparent 1px);
    background-size: 80px 80px;
}

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

.qual-card {
    position: relative;
    padding: 32px 24px;
    text-align: center;
    transition: var(--transition);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(240, 244, 249, 0.7) 100%);
    border: 1px solid var(--c-border);
}

.qual-card:hover {
    border-color: var(--c-border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.qual-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.08) 0%, rgba(37, 99, 235, 0.02) 100%);
    border: 1px solid var(--c-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--c-primary);
    transition: var(--transition);
}

.qual-icon-orange {
    background: linear-gradient(135deg, rgba(255, 107, 26, 0.08) 0%, rgba(255, 107, 26, 0.02) 100%);
    border-color: var(--c-border-orange);
    color: var(--c-accent);
}

.qual-card:hover .qual-icon {
    background: rgba(37, 99, 235, 0.1);
    transform: scale(1.1);
    box-shadow: var(--shadow-glow);
}

.qual-card:hover .qual-icon-orange {
    background: rgba(255, 107, 26, 0.1);
    box-shadow: var(--shadow-orange);
}

.qual-card h3 {
    font-size: 16px;
    color: var(--c-text);
    margin-bottom: 12px;
}

.qual-card p {
    font-size: 13px;
    color: var(--c-text-dim);
    line-height: 1.7;
}

/* ---------- 联系我们 ---------- */
.contact {
    background: var(--c-bg-2);
    background-image:
        radial-gradient(ellipse 500px 350px at 0% 30%, rgba(37, 99, 235, 0.04) 0%, transparent 100%),
        radial-gradient(ellipse 450px 350px at 100% 70%, rgba(255, 107, 26, 0.03) 0%, transparent 100%);
}

.contact-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 48px;
    align-items: start;
}

.contact-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.contact-item {
    display: flex;
    gap: 14px;
    align-items: flex-start;
}

.contact-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1) 0%, rgba(37, 99, 235, 0.03) 100%);
    border: 1px solid var(--c-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--c-primary);
    flex-shrink: 0;
}

.contact-icon-orange {
    background: linear-gradient(135deg, rgba(255, 107, 26, 0.1) 0%, rgba(255, 107, 26, 0.03) 100%);
    border-color: var(--c-border-orange);
    color: var(--c-accent);
}

.contact-item h4 {
    font-size: 15px;
    color: var(--c-text);
    margin-bottom: 4px;
}

.contact-item p {
    font-size: 13px;
    color: var(--c-text-dim);
}

.contact-qr {
    display: flex;
    justify-content: center;
}

.qr-card {
    position: relative;
    padding: 32px;
    text-align: center;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(240, 244, 249, 0.85) 100%);
    border: 1px solid var(--c-border);
}

.qr-img {
    width: 160px;
    height: 160px;
    border-radius: var(--radius-sm);
    margin: 0 auto 16px;
}

.qr-card h4 {
    font-size: 15px;
    color: var(--c-text);
    margin-bottom: 4px;
}

.qr-card p {
    font-size: 13px;
    color: var(--c-text-dim);
}

/* ---------- Footer ---------- */
.footer {
    position: relative;
    background: linear-gradient(180deg, #eef4fb 0%, #dde9f5 100%);
    padding: 0;
    border-top: none;
    overflow: hidden;
}

.footer::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: linear-gradient(180deg,
        rgba(240, 244, 249, 0.6) 0%,
        rgba(238, 244, 251, 0) 100%);
    z-index: 1;
    pointer-events: none;
}

.footer .container {
    position: relative;
    z-index: 2;
    padding-top: 70px;
    padding-bottom: 30px;
    color: #1e3a5f;
}

.footer-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-primary);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 24px;
    margin-bottom: 32px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-logo {
    height: 36px;
}

.footer-brand h3 {
    font-size: 16px;
    color: #1e3a5f;
    margin-bottom: 2px;
}

.footer-brand p {
    font-size: 12px;
    color: #5a7a9a;
    letter-spacing: 0.5px;
}

.footer-links {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.footer-links a {
    font-size: 14px;
    color: #4a6585;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--c-primary);
}

.footer-bottom {
    padding-top: 24px;
    border-top: none;
    text-align: center;
    margin-top: 30px;
}

.footer-bottom .beian-line {
    margin-top: 6px;
    font-size: 13px;
    line-height: 1.8;
    opacity: .72;
}

.footer-bottom .beian-line a {
    color: inherit;
    text-decoration: none;
}

.footer-bottom .beian-line a:hover {
    text-decoration: underline;
}

.footer-bottom p {
    font-size: 13px;
    color: #6a85a3;
}

/* ---------- 返回顶部 ---------- */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, #ffffff 0%, #f0f4f9 100%);
    border: 1px solid var(--c-border-hover);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: var(--shadow-card);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--c-primary);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.08) 0%, rgba(255, 107, 26, 0.04) 100%);
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

/* ---------- 产品弹窗 ---------- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-overlay.show {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    padding: 40px;
    position: relative;
    transform: scale(0.9);
    transition: var(--transition);
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
}

.modal-overlay.show .modal-content {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(37, 99, 235, 0.06);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--c-text-dim);
    cursor: pointer;
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--c-primary);
    background: rgba(37, 99, 235, 0.1);
}

/* ---------- 滚动动画 ---------- */
.fade-in-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   视觉增强 v2 - 丰富非首页区块色彩层次
   蓝橙点缀 · 减少留白单调感
   ======================================== */

/* --- 关于我们：特性项hover --- */
.feature-item:hover {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.05) 0%, rgba(255, 107, 26, 0.02) 100%);
    border-color: var(--c-border);
    transform: translateX(4px);
}

/* --- 产品卡片：顶部渐变条 --- */
.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--c-primary) 0%, var(--c-accent) 100%);
    opacity: 0.5;
    z-index: 3;
    transition: var(--transition);
}

.product-card:hover::before {
    opacity: 1;
    height: 4px;
}

/* 产品名称hover渐变 */
.product-name {
    transition: var(--transition);
}

.product-card:hover .product-name {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 产品图片hover叠加蓝橙色调 */
.product-card:hover .product-img-overlay {
    background:
        linear-gradient(135deg, rgba(37, 99, 235, 0.1) 0%, transparent 40%, rgba(255, 107, 26, 0.06) 100%),
        linear-gradient(180deg, transparent 40%, rgba(240, 244, 249, 0.4) 100%);
}

/* 产品标签hover增强 */
.tag {
    transition: var(--transition);
}

.product-card:hover .tag {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.08) 0%, rgba(255, 107, 26, 0.04) 100%);
    border-color: var(--c-border-hover);
    color: var(--c-primary);
}

/* --- 场景卡片增强 --- */
/* 图片底部蓝调渐变叠加 */
.scene-img-wrap::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(37, 99, 235, 0.15) 100%);
    pointer-events: none;
}

/* 场景标题左侧渐变指示条 */
.scene-body h3 {
    position: relative;
    padding-left: 14px;
}

.scene-body h3::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 20px;
    border-radius: 2px;
    background: linear-gradient(180deg, var(--c-primary) 0%, var(--c-accent) 100%);
}

/* --- 资质卡片增强 --- */
/* 顶部渐变条 */
.qual-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--c-primary) 0%, var(--c-accent) 100%);
    opacity: 0.5;
    transition: var(--transition);
}

.qual-card:hover::before {
    opacity: 1;
}

/* 右上角装饰光斑 */
.qual-card::after {
    content: '';
    position: absolute;
    top: -20px;
    right: -20px;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.06) 0%, transparent 70%);
    transition: var(--transition);
    pointer-events: none;
}

.qual-card:hover::after {
    width: 120px;
    height: 120px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.1) 0%, rgba(255, 107, 26, 0.04) 50%, transparent 70%);
}

/* --- 联系我们增强 --- */
/* 联系项hover渐变背景 */
.contact-item {
    padding: 16px;
    border-radius: var(--radius-md);
    transition: var(--transition);
    border: 1px solid transparent;
}

.contact-item:hover {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.04) 0%, rgba(255, 107, 26, 0.02) 100%);
    border-color: var(--c-border);
    transform: translateY(-2px);
    box-shadow: var(--shadow-card);
}

/* 二维码卡片渐变光晕 */
.qr-card::after {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: calc(var(--radius-md) + 2px);
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.2) 0%, rgba(255, 107, 26, 0.1) 100%);
    opacity: 0;
    z-index: -1;
    transition: var(--transition);
}

.qr-card:hover::after {
    opacity: 1;
}

/* --- 区块装饰光斑 --- */
.products::after {
    content: '';
    position: absolute;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 107, 26, 0.04) 0%, transparent 70%);
    bottom: 10%;
    left: 5%;
    pointer-events: none;
    z-index: 0;
}

.qualifications::after {
    content: '';
    position: absolute;
    width: 250px;
    height: 250px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.04) 0%, transparent 70%);
    top: 30%;
    right: 3%;
    pointer-events: none;
    z-index: 0;
}

/* 确保内容在装饰之上 */
.products .container,
.qualifications .container {
    position: relative;
    z-index: 1;
}

/* ========================================
   科技感增强 v3 - 动态装饰与视觉层次
   ======================================== */

/* --- 全局section角落科技装饰线 --- */
.section::after {
    content: '';
    position: absolute;
    top: 20px;
    right: 20px;
    width: 60px;
    height: 60px;
    pointer-events: none;
    z-index: 0;
    opacity: 0.4;
    background:
        linear-gradient(135deg, transparent 40%, rgba(37, 99, 235, 0.15) 41%, rgba(37, 99, 235, 0.15) 42%, transparent 43%),
        linear-gradient(315deg, transparent 40%, rgba(37, 99, 235, 0.15) 41%, rgba(37, 99, 235, 0.15) 42%, transparent 43%),
        linear-gradient(225deg, transparent 55%, rgba(255, 107, 26, 0.1) 56%, rgba(255, 107, 26, 0.1) 57%, transparent 58%);
}

/* --- about区块额外装饰 --- */
.about::after {
    top: auto;
    bottom: 30px;
    left: 20px;
    right: auto;
    background:
        linear-gradient(45deg, transparent 40%, rgba(37, 99, 235, 0.12) 41%, rgba(37, 99, 235, 0.12) 42%, transparent 43%),
        linear-gradient(135deg, transparent 50%, rgba(255, 107, 26, 0.08) 51%, rgba(255, 107, 26, 0.08) 52%, transparent 53%);
}

/* --- section-title科技感下划线动画 --- */
.section-line {
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--c-primary) 0%, var(--c-accent) 100%);
    margin: 0 auto 16px;
    border-radius: 2px;
    position: relative;
}

.section-line::after {
    content: '';
    position: absolute;
    top: -3px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 9px;
    background: linear-gradient(90deg, transparent 0%, var(--c-primary-glow) 50%, transparent 100%);
    border-radius: 4px;
    filter: blur(4px);
}

/* --- feature-item增强：左侧渐变条 + 图标发光 --- */
.feature-icon {
    position: relative;
}

.feature-icon::after {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: calc(var(--radius-sm) + 4px);
    background: radial-gradient(circle at center, rgba(37, 99, 235, 0.12) 0%, transparent 70%);
    opacity: 0;
    transition: var(--transition);
    z-index: -1;
}

.feature-item:hover .feature-icon::after {
    opacity: 1;
}

/* --- 产品卡片增强：角标发光 + 扫描线动画 --- */
.product-card {
    position: relative;
    overflow: hidden;
}

.product-card::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent 40%,
        rgba(37, 99, 235, 0.03) 45%,
        rgba(37, 99, 235, 0.03) 55%,
        transparent 60%
    );
    transform: rotate(0deg);
    transition: none;
    pointer-events: none;
    z-index: 2;
}

.product-card:hover::after {
    animation: scanLine 1.5s ease-in-out forwards;
}

@keyframes scanLine {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* 产品badge增强脉冲 */
.product-badge {
    animation: badgePulse 3s ease-in-out infinite;
}

@keyframes badgePulse {
    0%, 100% { box-shadow: 0 2px 8px currentColor; }
    50% { box-shadow: 0 2px 16px currentColor, 0 0 12px currentColor; }
}

/* --- 场景卡片增强：底部渐变加深 + 悬浮阴影 --- */
.scene-card {
    position: relative;
    overflow: hidden;
}

.scene-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--c-primary) 0%, var(--c-accent) 100%);
    opacity: 0;
    transition: var(--transition);
    z-index: 3;
}

.scene-card:hover::after {
    opacity: 0.8;
}

/* --- 资质卡片：数字/图标计数动画感 --- */
.qual-icon {
    position: relative;
}

.qual-icon::before {
    content: '';
    position: absolute;
    inset: -6px;
    border-radius: 50%;
    border: 1px dashed rgba(37, 99, 235, 0.2);
    animation: iconRingRotate 12s linear infinite;
}

@keyframes iconRingRotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* --- 联系我们：图标呼吸效果 --- */
.contact-icon {
    position: relative;
}

.contact-icon::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-sm);
    background: inherit;
    opacity: 0;
    animation: contactIconBreathe 3s ease-in-out infinite;
}

@keyframes contactIconBreathe {
    0%, 100% { opacity: 0; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.15); }
}

/* --- Hero区粒子数量和大小增强提示（JS控制）--- */
/* 已通过main.js实现动态粒子 */

/* --- 全局：滚动条美化 --- */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--c-bg-2);
}
::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--c-primary-light), var(--c-primary));
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--c-primary);
}

/* --- 导航栏：简洁风格，无需额外动效 --- */

/* ========================================
   产品详情页专用样式
   ======================================== */

/* --- 产品详情 Hero --- */
.prod-hero {
    position: relative;
    min-height: 420px;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 40%, #1e3a5f 100%);
    padding: 100px 0 60px;
}

.prod-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(37,99,235,0.15) 0%, transparent 60%),
        radial-gradient(circle at 80% 30%, rgba(255,107,26,0.1) 0%, transparent 50%);
}

.prod-hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.prod-hero-info {
    color: #fff;
}

.prod-hero-tag {
    display: inline-block;
    background: var(--gradient-accent);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 14px;
    border-radius: 20px;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

.prod-hero-title {
    font-size: 36px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 8px;
    color: #fff;
}

.prod-hero-model {
    font-size: 15px;
    color: rgba(255,255,255,0.6);
    font-family: 'Consolas', 'Monaco', monospace;
    margin-bottom: 20px;
}

.prod-hero-desc {
    font-size: 15px;
    line-height: 1.8;
    color: rgba(255,255,255,0.75);
    margin-bottom: 28px;
}

.prod-hero-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.prod-hero-img {
    display: flex;
    justify-content: center;
    align-items: center;
}

.prod-hero-img img {
    max-width: 380px;
    max-height: 340px;
    object-fit: contain;
    filter: drop-shadow(0 20px 40px rgba(0,0,0,0.3));
    border-radius: var(--radius-md);
    transition: transform 0.5s ease;
}

.prod-hero-img img:hover {
    transform: scale(1.03);
}

/* --- 产品详情内容区 --- */
.prod-detail {
    padding: 80px 0;
}

.prod-detail-grid {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 36px;
}

.prod-main {}

.prod-sidebar {
    position: sticky;
    top: 90px;
    align-self: start;
}

/* 功能特性卡片 */
.prod-feature-card {
    background: var(--c-bg);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    padding: 32px;
    margin-bottom: 28px;
    transition: all var(--transition);
}

.prod-feature-card:hover {
    box-shadow: var(--shadow-hover);
    border-color: var(--c-primary-light);
}

.prod-feature-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--c-text);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.prod-feature-title svg {
    color: var(--c-primary);
    flex-shrink: 0;
}

.prod-feature-list {
    list-style: none;
}

.prod-feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid rgba(0,0,0,0.04);
    font-size: 14px;
    color: var(--c-text-dim);
    line-height: 1.6;
}

.prod-feature-list li:last-child {
    border-bottom: none;
}

.prod-feature-list li .feat-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--gradient-primary);
    flex-shrink: 0;
    margin-top: 6px;
}

.prod-feature-list li:nth-child(even) .feat-dot {
    background: var(--gradient-accent);
}

/* 技术参数表格 */
.prod-specs {
    background: var(--c-bg);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: 28px;
}

.prod-specs-header {
    background: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
    color: #fff;
    padding: 14px 24px;
    font-size: 16px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.specs-table {
    width: 100%;
    border-collapse: collapse;
}

.specs-table tr:nth-child(even) {
    background: var(--c-bg-2);
}

.specs-table td {
    padding: 12px 20px;
    font-size: 14px;
    border-bottom: 1px solid rgba(0,0,0,0.04);
}

.specs-table td:first-child {
    color: var(--c-text-muted);
    width: 140px;
    font-weight: 500;
    white-space: nowrap;
}

.specs-table td:last-child {
    color: var(--c-text);
}

/* 侧边栏操作卡 */
.sidebar-card {
    background: var(--c-bg);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    padding: 24px;
    margin-bottom: 20px;
}

.sidebar-card-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--c-text);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.sidebar-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    margin-bottom: 10px;
}

.btn-primary-full {
    background: var(--gradient-primary);
    color: #fff;
    border: none;
    box-shadow: 0 4px 14px rgba(37,99,235,0.25);
}
.btn-primary-full:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(37,99,235,0.35); }

.btn-outline-full {
    background: transparent;
    color: var(--c-primary);
    border: 1.5px solid var(--c-primary);
}
.btn-outline-full:hover { background: var(--c-primary); color: #fff; }

.btn-orange-full {
    background: var(--gradient-accent);
    color: #fff;
    border: none;
    box-shadow: 0 4px 14px rgba(255,107,26,0.25);
}
.btn-orange-full:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(255,107,26,0.35); }

/* 相关产品 */
.related-products {
    margin-top: 48px;
}

.related-products-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--c-text);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--c-border);
}

.related-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    margin-bottom: 8px;
}

.related-item:hover {
    background: var(--c-bg-2);
}

.related-item img {
    width: 56px;
    height: 56px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.related-item-info h4 {
    font-size: 13px;
    font-weight: 600;
    color: var(--c-text);
    margin-bottom: 2px;
}

.related-item-info p {
    font-size: 11px;
    color: var(--c-text-muted);
}

/* 面包屑导航 */
.prod-breadcrumb {
    padding: 14px 0;
    background: var(--c-bg-2);
    border-bottom: 1px solid var(--c-border);
}

.prod-breadcrumb .container {
    font-size: 13px;
    color: var(--c-text-muted);
}

.prod-breadcrumb a {
    color: var(--c-primary);
    transition: color 0.2s;
}
.prod-breadcrumb a:hover { color: var(--c-accent); }

/* 应用场景小卡片 */
.prod-scenes {
    background: var(--c-bg);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    padding: 32px;
    margin-bottom: 28px;
}

.prod-scene-item {
    display: flex;
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid rgba(0,0,0,0.04);
}
.prod-scene-item:last-child { border-bottom: none; }

.prod-scene-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    background: var(--c-primary-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--c-primary);
}

.prod-scene-icon.scene-icon-orange {
    background: var(--c-accent-glow);
    color: var(--c-accent);
}

.prod-scene-info h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--c-text);
    margin-bottom: 4px;
}
.prod-scene-info p {
    font-size: 13px;
    color: var(--c-text-dim);
    line-height: 1.6;
}

/* 产品详情页响应式 */
@media (max-width: 1024px) {
    .prod-hero .container { grid-template-columns: 1fr; text-align: center; }
    .prod-hero-img { order: -1; }
    .prod-hero-img img { max-width: 300px; max-height: 280px; }
    .prod-hero-actions { justify-content: center; }
    .prod-detail-grid { grid-template-columns: 1fr; }
    .prod-sidebar { position: static; }
    .related-products { display: grid; grid-template-columns: repeat(2,1fr); gap: 12px; }
}

@media (max-width: 768px) {
    .prod-hero { min-height: auto; padding: 80px 0 40px; }
    .prod-hero-title { font-size: 28px; }
    .prod-detail { padding: 50px 0; }
    .prod-feature-card { padding: 20px; }
    .related-products { grid-template-columns: 1fr; }
}

/* --- 产品卡片可点击链接 --- */
.product-card-link {
    text-decoration: none;
    color: inherit;
    display: block;
}
.product-card-link .product-card {
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.product-card-link:hover .product-card {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
    .products-grid { grid-template-columns: repeat(2, 1fr); }
    .qual-grid { grid-template-columns: repeat(2, 1fr); }
    .service-grid { grid-template-columns: repeat(2, 1fr); }
    .dl-toolbar { flex-direction: column; align-items: stretch; }
    .dl-toolbar-right { justify-content: space-between; }
    .dl-search-input { width: 160px; flex: 1; }
    .about-content { grid-template-columns: 1fr; gap: 40px; }
    .contact-content { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        flex-direction: column;
        padding: 16px;
        border-bottom: 1px solid var(--c-border);
        box-shadow: 0 4px 20px rgba(15, 23, 42, 0.06);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-toggle { display: flex; }

    .hero-title { font-size: 36px; }
    .section-title { font-size: 28px; }
    .section { padding: 80px 0; }

    .products-grid { grid-template-columns: 1fr; }
    .scenes-grid { grid-template-columns: 1fr; }
    .qual-grid { grid-template-columns: 1fr; }
    .service-grid { grid-template-columns: 1fr; }
    .dl-table-wrap { overflow-x: auto; }
    .dl-toolbar-right { flex-direction: column; gap: 8px; }
    .contact-info { grid-template-columns: 1fr; }
    .about-features { grid-template-columns: 1fr; }
    .hero-stats { gap: 12px; }
    .stat-num { font-size: 28px; }
    .hero-actions { flex-direction: column; align-items: center; }
    .btn { width: 100%; max-width: 280px; justify-content: center; }
}

@media (max-width: 480px) {
    .hero-title { font-size: 28px; }
    .hero-desc { font-size: 14px; }
    .stat-divider { display: none; }
    .hero-stats { flex-direction: column; gap: 16px; }
}