/* 基础重置 & 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background: #f8fafc;
    color: #0f172a;
    line-height: 1.5;
    scroll-behavior: smooth;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 导航栏 */
.navbar {
    background: rgba(255,255,255,0.96);
    backdrop-filter: blur(8px);
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 50;
    border-bottom: 1px solid #e2e8f0;
}
.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    padding: 16px 24px;
    max-width: 1280px;
    margin: 0 auto;
}
.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #1e3a8a, #3b82f6);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    letter-spacing: -0.3px;
}
.logo p {
    font-size: 0.75rem;
    color: #475569;
    font-weight: 500;
}
.nav-links {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
    list-style: none;
}
.nav-links a {
    text-decoration: none;
    font-weight: 500;
    color: #1e293b;
    transition: color 0.2s;
    font-size: 0.95rem;
}
.nav-links a:hover {
    color: #2563eb;
}

/* 通用区块 */
.section {
    padding: 64px 0;
    border-bottom: 1px solid #e2e8f0;
}
.section:last-child, .no-border {
    border-bottom: none;
}
.section-title {
    font-size: 1.9rem;
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #0f2b5c, #2563eb);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.section-sub {
    color: #475569;
    max-width: 720px;
    margin-bottom: 40px;
    font-size: 1.05rem;
}
.badge {
    background: #e0f2fe;
    color: #0369a1;
    font-size: 0.8rem;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 40px;
    display: inline-block;
    margin-bottom: 20px;
}

/* 卡片网格 */
.grid-2, .grid-3 {
    display: grid;
    gap: 28px;
}
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.card {
    background: white;
    border-radius: 28px;
    padding: 24px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.02), 0 1px 2px rgba(0,0,0,0.05);
    transition: all 0.2s ease;
    border: 1px solid #eef2ff;
}
.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 25px -12px rgba(0,0,0,0.1);
    border-color: #cbdffc;
}
.card-icon {
    font-size: 2rem;
    color: #2563eb;
    margin-bottom: 16px;
}
.card h3 {
    font-size: 1.35rem;
    font-weight: 600;
    margin-bottom: 12px;
}
.card ul {
    margin-left: 20px;
    color: #334155;
}
.stat-number {
    font-size: 2.2rem;
    font-weight: 800;
    color: #0f2b5c;
    line-height: 1.2;
}
.stat-label {
    font-size: 0.85rem;
    color: #475569;
    margin-top: 6px;
}
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 32px; }
hr { margin: 12px 0; }

/* 市场份额进度条 */
.market-share-card {
    background: white;
    border-radius: 28px;
    padding: 24px;
    margin-top: 24px;
    border: 1px solid #eef2ff;
}
.share-item {
    margin-bottom: 20px;
}
.share-label {
    display: flex;
    justify-content: space-between;
    font-weight: 500;
    margin-bottom: 6px;
}
.progress-bar {
    background: #e2e8f0;
    border-radius: 40px;
    height: 10px;
    overflow: hidden;
}
.progress-fill {
    background: #2563eb;
    width: 0%;
    height: 100%;
    border-radius: 40px;
}
.fill-other {
    background: #60a5fa;
}

/* 规格表格 */
.spec-table {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 12px 16px;
    background: #f9f9ff;
    padding: 20px;
    border-radius: 28px;
}
.spec-label {
    font-weight: 600;
    color: #1e293b;
}
.spec-desc {
    color: #334155;
}

/* Hero 区域 */
.hero {
    background: linear-gradient(145deg, #f0f9ff 0%, #e9f0fe 100%);
    border-radius: 2rem;
    margin-top: 32px;
    padding: 48px 40px;
}
.hero-title {
    font-size: 2.6rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 16px;
}
.hero-desc {
    font-size: 1.1rem;
    color: #1e293b;
    max-width: 700px;
    margin-bottom: 24px;
}
.hero-features {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}
.hero-features div {
    background: rgba(255,255,255,0.6);
    padding: 6px 14px;
    border-radius: 40px;
    font-size: 0.9rem;
}

/* 技术趋势卡片 */
.tech-trends {
    margin-top: 16px;
}
.trend-list {
    margin-top: 8px;
}

/* 洞察卡片 */
.insight-card {
    background: #eef2ff;
    border-radius: 28px;
    padding: 24px;
    margin-top: 16px;
}

/* slogan 卡片 */
.slogan-card {
    margin-top: 24px;
    text-align: center;
    background: #ffffff;
    border-radius: 48px;
    padding: 20px;
    border: 1px solid #e2e8f0;
}

/* 标准卡片 */
.standard-card {
    background: linear-gradient(115deg, #f1f5ff, white);
    border-radius: 28px;
    padding: 24px;
}
.standard-content {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 20px;
}
.standard-icon {
    text-align: right;
}
.standard-icon i {
    font-size: 3rem;
    color: #3b82f6;
}
.standard-icon p {
    font-size: 0.85rem;
    color: #475569;
    margin-top: 8px;
}

/* 产品图片画廊（img标签方式） */
.product-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 24px;
}
.gallery-item {
    background: white;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 8px 20px rgba(0,0,0,0.05);
    transition: transform 0.2s;
}
.gallery-item:hover {
    transform: translateY(-5px);
}
.gallery-img {
    width: 100%;
    height: 240px;
    object-fit: cover;
    display: block;
    background-color: #eef2ff;
}
.gallery-caption {
    text-align: center;
    padding: 12px;
    font-weight: 500;
    color: #1e293b;
}
.gallery-note {
    margin-top: 20px;
    text-align: center;
    font-size: 0.85rem;
    color: #64748b;
}

/* 视频展示区 */
.video-container {
    margin-top: 24px;
    text-align: center;
    background: #f1f5f9;
    border-radius: 28px;
    padding: 24px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}
.product-video {
    max-width: 100%;
    max-height: 70vh;
    width: auto;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
    object-fit: contain;
    background-color: #000;
}
.video-caption {
    margin-top: 16px;
    font-size: 0.9rem;
    color: #475569;
}

/* 联系方式区块 */
.contact-section {
    background: linear-gradient(135deg, #f1f5f9 0%, #e6edf5 100%);
    padding: 48px 0;
    border-top: 1px solid #e2e8f0;
    border-bottom: 1px solid #e2e8f0;
}
.contact-wrapper {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 32px;
    background: white;
    border-radius: 32px;
    padding: 32px 40px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.05);
}
.contact-info h3 {
    font-size: 1.6rem;
    margin-bottom: 16px;
    color: #0f172a;
}
.contact-info p {
    margin: 12px 0;
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}
.contact-info a {
    color: #2563eb;
    text-decoration: none;
    font-weight: 500;
}
.contact-info a:hover {
    text-decoration: underline;
}
.copy-btn {
    background: #eef2ff;
    border: none;
    padding: 4px 12px;
    border-radius: 40px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: background 0.2s;
}
.copy-btn:hover {
    background: #d9e6ff;
}
.contact-tip {
    font-size: 0.85rem;
    color: #475569;
    margin-top: 8px;
}
.contact-qr {
    text-align: center;
    min-width: 150px;
}
.qr-placeholder {
    background: #f8fafc;
    border-radius: 20px;
    padding: 16px;
    border: 1px dashed #cbd5e1;
}
.qr-placeholder i {
    font-size: 3rem;
    color: #07c160;
}
.qr-placeholder p {
    margin: 8px 0 4px;
    font-size: 0.9rem;
}
.qr-placeholder small {
    font-size: 0.7rem;
    color: #94a3b8;
}

/* Footer */
footer {
    background: #0f172a;
    color: #cbd5e1;
    padding: 40px 0;
    text-align: center;
    font-size: 0.85rem;
}

/* 响应式 */
@media (max-width: 768px) {
    .grid-2, .grid-3 {
        grid-template-columns: 1fr;
    }
    .nav-container {
        flex-direction: column;
        gap: 12px;
    }
    .nav-links {
        justify-content: center;
        gap: 18px;
    }
    .section {
        padding: 48px 0;
    }
    .section-title {
        font-size: 1.7rem;
    }
    .hero {
        padding: 32px 24px;
    }
    .hero-title {
        font-size: 2rem;
    }
    .standard-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .standard-icon {
        text-align: center;
    }
    .contact-wrapper {
        flex-direction: column;
        text-align: center;
        padding: 24px;
    }
    .contact-info p {
        justify-content: center;
    }
    .product-gallery {
        grid-template-columns: 1fr;
    }
    .product-video {
        max-height: 50vh;
    }
}