/* ==========================================================================
   特工18 - 深蓝科技风格样式表
   布局：大卡片网格布局，悬浮阴影效果
   排版：左右分栏，图文交错
   配色：深蓝#0066ff + 科技蓝#00a8ff + 深灰#1a1a2e
   ========================================================================== */

:root {
    --primary-blue: #0066ff;
    --secondary-blue: #003d7a;
    --accent-blue: #00a8ff;
    --light-blue: #dbeafe;
    --dark-bg: #0a0e27;
    --text-primary: #1a1a2e;
    --text-secondary: #4a5568;
    --text-light: #718096;
    --bg-white: #ffffff;
    --bg-light: #f7fafc;
    --gradient-blue: linear-gradient(135deg, #0066ff 0%, #00a8ff 100%);
    --shadow-sm: 0 2px 8px rgba(0, 102, 255, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 102, 255, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 102, 255, 0.16);
    --shadow-xl: 0 12px 48px rgba(0, 102, 255, 0.2);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --space-sm: 16px;
    --space-md: 24px;
    --space-lg: 32px;
    --space-xl: 48px;
    --space-2xl: 64px;
    --space-3xl: 96px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

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

/* 顶部导航 */
.top-nav-tech {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 102, 255, 0.1);
    box-shadow: var(--shadow-sm);
}

.nav-wrapper {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: var(--space-lg);
    height: 72px;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-container img {
    width: 40px;
    height: 40px;
    border-radius: 8px;
}

.logo-text {
    font-size: 20px;
    font-weight: 400;
    color: var(--text-primary);
    letter-spacing: 1px;
}

.logo-text strong {
    font-weight: 900;
    color: var(--primary-blue);
}

.version-badge {
    padding: 4px 8px;
    background: var(--gradient-blue);
    color: white;
    font-size: 11px;
    font-weight: 600;
    border-radius: 4px;
}

.search-box-tech {
    position: relative;
    width: 100%;
    max-width: 480px;
    display: flex;
    align-items: center;
    background: var(--bg-light);
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    padding: 0 var(--space-sm);
    transition: all 0.3s ease;
}

.search-box-tech:focus-within {
    background: white;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.1);
}

.search-icon {
    color: var(--text-light);
}

.search-input-tech {
    flex: 1;
    border: none;
    background: transparent;
    padding: 12px var(--space-sm);
    font-size: 14px;
    color: var(--text-primary);
    outline: none;
}

.search-shortcut {
    padding: 4px 8px;
    background: white;
    border: 1px solid var(--light-blue);
    border-radius: 4px;
    font-size: 11px;
    color: var(--text-light);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.nav-link-tech {
    padding: 8px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
    border-radius: var(--radius-sm);
}

.nav-link-tech:hover {
    color: var(--primary-blue);
    background: var(--light-blue);
}

.download-btn-nav {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--gradient-blue);
    color: white;
    border-radius: var(--radius-md);
    font-weight: 600;
}

.download-btn-nav:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Hero区域 */
.hero-tech {
    padding: 120px var(--space-lg) var(--space-3xl);
    background: linear-gradient(180deg, var(--bg-light) 0%, white 100%);
}

.hero-grid {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
}

.hero-main-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(0, 102, 255, 0.1);
}

.status-bar {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    background: var(--light-blue);
    border-radius: var(--radius-sm);
    font-size: 13px;
}

.status-dot {
    width: 8px;
    height: 8px;
    background: #10b981;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero-badge-tech {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.1) 0%, rgba(0, 168, 255, 0.1) 100%);
    border: 1px solid rgba(0, 102, 255, 0.2);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 600;
    color: var(--primary-blue);
    margin-bottom: var(--space-lg);
}

.title-number-tech {
    display: block;
    font-size: 120px;
    font-weight: 900;
    line-height: 1;
    background: var(--gradient-blue);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: -20px;
}

.title-main {
    display: block;
    font-size: 48px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
    margin-bottom: var(--space-sm);
}

.title-sub {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-light);
    letter-spacing: 3px;
}

.hero-desc-tech {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
}

.stats-grid-tech {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.stat-card-tech {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--bg-light);
    border-radius: var(--radius-md);
    border: 1px solid rgba(0, 102, 255, 0.08);
    transition: all 0.3s ease;
}

.stat-card-tech:hover {
    background: white;
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.stat-icon-tech {
    font-size: 32px;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.stat-number-tech {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.stat-label-tech {
    font-size: 13px;
    color: var(--text-light);
    font-weight: 500;
}

.stat-trend {
    font-size: 12px;
    color: #10b981;
    font-weight: 600;
    margin-top: 4px;
}

.hero-actions-tech {
    display: flex;
    gap: var(--space-md);
}

.btn-primary-tech {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    background: var(--gradient-blue);
    color: white;
    text-decoration: none;
    font-size: 16px;
    font-weight: 600;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.btn-primary-tech:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.btn-secondary-tech {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    background: white;
    color: var(--primary-blue);
    text-decoration: none;
    font-size: 16px;
    font-weight: 600;
    border: 2px solid var(--primary-blue);
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
}

.btn-secondary-tech:hover {
    background: var(--light-blue);
    transform: translateY(-2px);
}

.hero-image-card {
    position: relative;
}

.image-frame-tech {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.image-frame-tech img {
    width: 100%;
    height: auto;
    display: block;
}

.image-overlay-tech {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 102, 255, 0.1) 100%);
}

.image-stats {
    position: absolute;
    bottom: 20px;
    left: 20px;
    right: 20px;
    display: flex;
    gap: 12px;
}

.mini-stat {
    flex: 1;
    padding: 12px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-md);
    text-align: center;
}

.mini-label {
    display: block;
    font-size: 11px;
    color: var(--text-light);
    margin-bottom: 4px;
}

.mini-value {
    display: block;
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-blue);
}

/* 功能模块区域 */
.features-tech {
    padding: var(--space-3xl) var(--space-lg);
    background: white;
}

.section-header-tech {
    max-width: 800px;
    margin: 0 auto var(--space-2xl);
    text-align: center;
}

.section-tag-tech {
    display: inline-block;
    padding: 6px 16px;
    background: var(--light-blue);
    color: var(--primary-blue);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 2px;
    border-radius: 100px;
    margin-bottom: var(--space-md);
}

.section-title-tech {
    font-size: 42px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.section-subtitle-tech {
    font-size: 18px;
    color: var(--text-secondary);
}

.features-grid-tech {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.feature-card-tech {
    background: white;
    border: 2px solid var(--bg-light);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: all 0.3s ease;
}

.feature-card-tech:hover {
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.card-header-tech {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
}

.card-number-tech {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-blue);
    color: white;
    font-size: 18px;
    font-weight: 700;
    border-radius: var(--radius-md);
}

.card-icon-tech {
    font-size: 36px;
}

.card-title-tech {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.card-desc-tech {
    font-size: 15px;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

.card-metrics {
    margin-bottom: var(--space-md);
}

.metric-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.metric-label {
    font-size: 13px;
    color: var(--text-light);
    font-weight: 500;
}

.metric-bar {
    height: 8px;
    background: var(--bg-light);
    border-radius: 100px;
    overflow: hidden;
}

.metric-fill {
    height: 100%;
    background: var(--gradient-blue);
    border-radius: 100px;
    transition: width 1s ease;
}

.metric-value {
    font-size: 14px;
    font-weight: 700;
    color: var(--primary-blue);
}

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

.tag-tech {
    padding: 6px 12px;
    background: var(--light-blue);
    color: var(--primary-blue);
    font-size: 12px;
    font-weight: 600;
    border-radius: 6px;
}

/* 截图展示区域 */
.gallery-tech {
    padding: var(--space-3xl) var(--space-lg);
    background: var(--bg-light);
}

.gallery-grid-tech {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

.gallery-item-tech {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.gallery-item-tech:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.gallery-item-tech img {
    width: 100%;
    height: auto;
    display: block;
}

.gallery-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-lg);
    background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.8) 100%);
    color: white;
}

.gallery-info h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 4px;
}

.gallery-info p {
    font-size: 14px;
    opacity: 0.9;
}

/* 下载区域 */
.download-tech {
    padding: var(--space-3xl) var(--space-lg);
    background: white;
}

.download-grid-tech {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.download-card-tech {
    position: relative;
    background: white;
    border: 2px solid var(--bg-light);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-align: center;
    transition: all 0.3s ease;
}

.download-card-tech:hover {
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.download-card-tech.featured {
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-md);
}

.featured-badge {
    position: absolute;
    top: -12px;
    right: 20px;
    padding: 6px 16px;
    background: var(--gradient-blue);
    color: white;
    font-size: 12px;
    font-weight: 700;
    border-radius: 100px;
}

.platform-badge {
    display: inline-block;
    padding: 4px 12px;
    background: var(--light-blue);
    color: var(--primary-blue);
    font-size: 11px;
    font-weight: 700;
    border-radius: 100px;
    margin-bottom: var(--space-md);
}

.platform-icon-tech {
    font-size: 64px;
    margin-bottom: var(--space-md);
}

.download-card-tech h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.platform-req {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: var(--space-md);
}

.download-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
    padding: var(--space-sm) 0;
    border-top: 1px solid var(--bg-light);
    border-bottom: 1px solid var(--bg-light);
}

.download-stats span {
    font-size: 13px;
    color: var(--text-secondary);
}

.btn-download-tech {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 14px 24px;
    background: var(--gradient-blue);
    color: white;
    text-decoration: none;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
}

.btn-download-tech:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* 页脚 */
.footer-tech {
    padding: var(--space-2xl) var(--space-lg);
    background: var(--dark-bg);
    color: white;
}

.footer-content-tech {
    max-width: 1400px;
    margin: 0 auto var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-brand {
    flex: 1;
}

.footer-logo {
    font-size: 24px;
    font-weight: 400;
    margin-bottom: var(--space-sm);
}

.footer-logo strong {
    font-weight: 900;
    color: var(--accent-blue);
}

.footer-brand p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
}

.footer-links-tech {
    display: flex;
    gap: var(--space-lg);
}

.footer-links-tech a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.footer-links-tech a:hover {
    color: var(--accent-blue);
}

.footer-bottom-tech {
    max-width: 1400px;
    margin: 0 auto;
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom-tech p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
    }

    .features-grid-tech {
        grid-template-columns: repeat(2, 1fr);
    }

    .download-grid-tech {
        grid-template-columns: 1fr;
    }

    .nav-wrapper {
        padding: 0 var(--space-md);
    }
}

@media (max-width: 768px) {
    :root {
        --space-sm: 12px;
        --space-md: 16px;
        --space-lg: 24px;
        --space-xl: 32px;
        --space-2xl: 48px;
        --space-3xl: 64px;
    }

    /* 导航栏优化 */
    .nav-wrapper {
        grid-template-columns: 1fr;
        height: auto;
        padding: 12px 16px;
        gap: 12px;
    }

    .nav-left {
        width: 100%;
    }

    .nav-center {
        display: none;
    }

    .nav-right {
        display: none;
    }

    .logo-container {
        gap: 8px;
    }

    .logo-container img {
        width: 32px;
        height: 32px;
    }

    .logo-text {
        font-size: 16px;
    }

    .version-badge {
        font-size: 10px;
        padding: 2px 6px;
    }

    /* Hero区域优化 */
    .hero-tech {
        padding: 80px 16px 40px;
    }

    .hero-main-card {
        padding: 24px 16px;
    }

    .status-bar {
        flex-wrap: wrap;
        gap: 8px;
        font-size: 12px;
    }

    .hero-badge-tech {
        font-size: 12px;
        padding: 6px 12px;
    }

    .title-number-tech {
        font-size: 60px;
    }

    .title-main {
        font-size: 24px;
    }

    .title-sub {
        font-size: 11px;
        letter-spacing: 1px;
    }

    .hero-desc-tech {
        font-size: 14px;
        line-height: 1.6;
    }

    .stats-grid-tech {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .stat-card-tech {
        padding: 16px;
    }

    .stat-number-tech {
        font-size: 28px;
    }

    .stat-label-tech {
        font-size: 12px;
    }

    .features-grid-tech {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .feature-card-tech {
        padding: 20px 16px;
    }

    .feature-number {
        font-size: 14px;
        width: 32px;
        height: 32px;
    }

    .feature-title-tech {
        font-size: 18px;
    }

    .feature-desc-tech {
        font-size: 14px;
    }

    .gallery-grid-tech {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .download-grid-tech {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .download-card-tech {
        padding: 24px 16px;
    }
}

@media (max-width: 480px) {
    .title-number-tech {
        font-size: 48px;
    }

    .title-main {
        font-size: 20px;
    }

    .hero-desc-tech br {
        display: none;
    }

    .stat-number-tech {
        font-size: 24px;
    }

    .feature-title-tech {
        font-size: 16px;
    }
}