/* ============================================
   岐狐GEO - 官网样式
   纯色 · 高大上 · AI行业风格
   ============================================ */

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

:root {
    /* 主色调 - 深邃科技蓝 */
    --color-bg-dark: #0A0E1A;
    --color-bg-dark-2: #0F1626;
    --color-bg-dark-3: #151D30;
    --color-bg-card: #1A2440;
    
    /* 强调色 */
    --color-accent: #2563EB;
    --color-accent-light: #3B82F6;
    --color-accent-cyan: #06B6D4;
    --color-accent-glow: rgba(37, 99, 235, 0.3);
    
    /* 文字色 */
    --color-text-white: #FFFFFF;
    --color-text-light: #E2E8F0;
    --color-text-gray: #94A3B8;
    --color-text-dark: #1E293B;
    --color-text-dark-2: #475569;
    
    /* 背景色 */
    --color-bg-light: #F8FAFC;
    --color-bg-white: #FFFFFF;
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-light: rgba(0, 0, 0, 0.08);
    
    /* 尺寸 */
    --nav-height: 92px;
    --max-width: 1200px;
    --content-width: 1440px;
    
    /* 过渡 */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    background: var(--color-bg-dark);
    color: var(--color-text-light);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

/* ===== Container ===== */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.container-wide {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    z-index: 1000;
    background: rgba(10, 14, 26, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(10, 14, 26, 0.95);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.nav-inner {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 40px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 700;
    color: var(--color-text-white);
    letter-spacing: 1px;
}

.nav-logo .logo-img {
    height: 72px;
    width: auto;
    object-fit: contain;
    filter: brightness(0) invert(1);
    transition: var(--transition);
}

.nav-logo .logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-cyan));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: white;
    font-weight: 900;
}

.nav-logo .logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.nav-logo .logo-text span:last-child {
    font-size: 11px;
    font-weight: 400;
    color: var(--color-text-gray);
    letter-spacing: 2px;
}

@media (max-width: 768px) {
    .nav-logo .logo-img {
        height: 54px;
    }
    .nav-inner {
        padding: 0 20px;
    }
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-menu a {
    padding: 8px 20px;
    font-size: 15px;
    color: var(--color-text-gray);
    border-radius: 6px;
    font-weight: 500;
    position: relative;
}

.nav-menu a:hover {
    color: var(--color-text-white);
}

.nav-menu a.active {
    color: var(--color-text-white);
}

.nav-menu a.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 2px;
    background: var(--color-accent);
    border-radius: 2px;
}

.nav-cta {
    padding: 10px 24px;
    background: var(--color-accent);
    color: white;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
}

.nav-cta:hover {
    background: var(--color-accent-light);
    transform: translateY(-1px);
    box-shadow: 0 4px 20px var(--color-accent-glow);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 4px;
}

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

/* ===== Hero / Banner Carousel ===== */
.hero {
    position: relative;
    width: 100%;
    height: 100vh;
    min-height: 600px;
    overflow: hidden;
    margin-top: 0;
}

.banner-container {
    position: relative;
    width: 100%;
    height: 100%;
}

.banner-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    pointer-events: none;
}

.banner-slide.active {
    opacity: 1;
    pointer-events: auto;
}

/* Banner content area: 1440px wide, centered (1000px padding each side on 3440px) */
.banner-content {
    width: 100%;
    max-width: 1440px;
    padding: 30px 40px;
    text-align: center;
    z-index: 2;
    position: relative;
}

.banner-tag {
    display: inline-block;
    padding: 6px 18px;
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 30px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 28px;
    letter-spacing: 2px;
    backdrop-filter: blur(10px);
}

.banner-title {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 24px;
    letter-spacing: 2px;
}

.banner-title .highlight {
    background: linear-gradient(135deg, var(--color-accent-light), var(--color-accent-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.banner-subtitle {
    font-size: 22px;
    font-weight: 400;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.7);
    max-width: 900px;
    margin: 0 auto 40px;
}

.banner-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-top: 20px;
}

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

.banner-stat-item .stat-number {
    font-size: 48px;
    font-weight: 800;
    color: var(--color-accent-cyan);
    line-height: 1;
}

.banner-stat-item .stat-label {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.6);
    margin-top: 8px;
}

.banner-cta-group {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 40px;
}

.banner-btn {
    padding: 14px 36px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.banner-btn-primary {
    background: var(--color-accent);
    color: white;
    box-shadow: 0 4px 30px var(--color-accent-glow);
}

.banner-btn-primary:hover {
    background: var(--color-accent-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 40px var(--color-accent-glow);
}

.banner-btn-outline {
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
}

.banner-btn-outline:hover {
    border-color: rgba(255, 255, 255, 0.6);
    background: rgba(255, 255, 255, 0.1);
}

/* Banner backgrounds - 纯色 + 装饰图形 */
.banner-bg-1 {
    background: linear-gradient(135deg, #0A0E1A 0%, #0F2851 50%, #0A0E1A 100%);
}

.banner-bg-2 {
    background: linear-gradient(135deg, #0A0E1A 0%, #0D1F3C 40%, #0A1A30 100%);
}

.banner-bg-3 {
    background: linear-gradient(135deg, #0A1525 0%, #102B4E 50%, #0A1525 100%);
}

.banner-bg-4 {
    background: linear-gradient(135deg, #0A0E1A 0%, #0E2240 50%, #0A1A2E 100%);
}

.banner-bg-5 {
    background: linear-gradient(135deg, #0B1020 0%, #122845 50%, #0B1020 100%);
}

/* Decorative shapes for banners */
.banner-decoration {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
}

.banner-decoration::before,
.banner-decoration::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.15;
}

.banner-decoration::before {
    width: 600px;
    height: 600px;
    background: var(--color-accent);
    top: -200px;
    right: -100px;
}

.banner-decoration::after {
    width: 500px;
    height: 500px;
    background: var(--color-accent-cyan);
    bottom: -150px;
    left: -100px;
}

/* Grid pattern overlay */
.banner-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    z-index: 1;
}

/* Carousel controls */
.banner-controls {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 10;
}

.banner-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.banner-dot.active {
    width: 36px;
    border-radius: 5px;
    background: var(--color-accent);
}

.banner-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    transition: var(--transition);
    z-index: 10;
}

.banner-arrow:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
}

.banner-arrow-prev {
    left: 40px;
}

.banner-arrow-next {
    right: 40px;
}

/* Scroll indicator */
.scroll-indicator {
    position: absolute;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    color: rgba(255, 255, 255, 0.4);
    font-size: 13px;
    text-align: center;
    animation: bounce 2s infinite;
}

.scroll-indicator .arrow-down {
    display: block;
    margin-top: 8px;
    font-size: 20px;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

/* ===== Section Common ===== */
.section {
    padding: 100px 0;
    position: relative;
}

.section-light {
    background: var(--color-bg-light);
    color: var(--color-text-dark);
}

.section-dark {
    background: var(--color-bg-dark);
    color: var(--color-text-light);
}

.section-dark-2 {
    background: var(--color-bg-dark-2);
    color: var(--color-text-light);
}

.section-header {
    text-align: center;
    margin-bottom: 70px;
}

.section-tag {
    display: inline-block;
    padding: 6px 18px;
    border-radius: 30px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 2px;
    margin-bottom: 20px;
}

.section-dark .section-tag,
.section-dark-2 .section-tag {
    background: rgba(37, 99, 235, 0.15);
    color: var(--color-accent-light);
    border: 1px solid rgba(37, 99, 235, 0.3);
}

.section-light .section-tag {
    background: rgba(37, 99, 235, 0.1);
    color: var(--color-accent);
    border: 1px solid rgba(37, 99, 235, 0.2);
}

.section-title {
    font-size: 42px;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 20px;
    letter-spacing: 1px;
}

.section-dark .section-title,
.section-dark-2 .section-title {
    color: var(--color-text-white);
}

.section-light .section-title {
    color: var(--color-text-dark);
}

.section-subtitle {
    font-size: 18px;
    line-height: 1.7;
    max-width: 700px;
    margin: 0 auto;
}

.section-dark .section-subtitle,
.section-dark-2 .section-subtitle {
    color: var(--color-text-gray);
}

.section-light .section-subtitle {
    color: var(--color-text-dark-2);
}

/* ===== Cards ===== */
.card-grid {
    display: grid;
    gap: 30px;
}

.card-grid-2 { grid-template-columns: repeat(2, 1fr); }
.card-grid-3 { grid-template-columns: repeat(3, 1fr); }
.card-grid-4 { grid-template-columns: repeat(4, 1fr); }
.card-grid-5 { grid-template-columns: repeat(5, 1fr); }

.card {
    padding: 40px 32px;
    border-radius: 16px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.section-dark .card,
.section-dark-2 .card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
}

.section-light .card {
    background: white;
    border: 1px solid var(--color-border-light);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

.card:hover {
    transform: translateY(-6px);
}

.section-dark .card:hover,
.section-dark-2 .card:hover {
    border-color: rgba(37, 99, 235, 0.4);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.section-light .card:hover {
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
    border-color: rgba(37, 99, 235, 0.2);
}

.card-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-cyan));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 24px;
    color: white;
}

.card-title {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 14px;
}

.section-dark .card-title,
.section-dark-2 .card-title {
    color: var(--color-text-white);
}

.section-light .card-title {
    color: var(--color-text-dark);
}

.card-desc {
    font-size: 15px;
    line-height: 1.7;
}

.section-dark .card-desc,
.section-dark-2 .card-desc {
    color: var(--color-text-gray);
}

.section-light .card-desc {
    color: var(--color-text-dark-2);
}

.card-number {
    font-size: 48px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-accent-light), var(--color-accent-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 16px;
}

/* ===== Stats Section ===== */
.stats-section {
    padding: 80px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    text-align: center;
}

.stat-block .stat-value {
    font-size: 56px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-accent-light), var(--color-accent-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 12px;
}

.stat-block .stat-name {
    font-size: 16px;
    color: var(--color-text-gray);
}

.section-light .stat-block .stat-name {
    color: var(--color-text-dark-2);
}

/* ===== Feature List ===== */
.feature-list {
    list-style: none;
    margin-top: 20px;
}

.feature-list li {
    padding: 8px 0;
    font-size: 15px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.section-dark .feature-list li,
.section-dark-2 .feature-list li {
    color: var(--color-text-gray);
}

.section-light .feature-list li {
    color: var(--color-text-dark-2);
}

.feature-list li::before {
    content: '✓';
    color: var(--color-accent);
    font-weight: 700;
    flex-shrink: 0;
}

/* ===== Process/Steps ===== */
.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    position: relative;
}

.process-grid::before {
    content: '';
    position: absolute;
    top: 35px;
    left: 12%;
    right: 12%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
    z-index: 0;
}

.process-step {
    text-align: center;
    position: relative;
    z-index: 1;
}

.process-number {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: var(--color-bg-dark-2);
    border: 2px solid var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 800;
    color: var(--color-accent-light);
    margin: 0 auto 24px;
    position: relative;
}

.section-light .process-number {
    background: white;
}

.process-step-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

.section-dark .process-step-title,
.section-dark-2 .process-step-title {
    color: var(--color-text-white);
}

.section-light .process-step-title {
    color: var(--color-text-dark);
}

.process-step-desc {
    font-size: 14px;
    line-height: 1.6;
}

.section-dark .process-step-desc,
.section-dark-2 .process-step-desc {
    color: var(--color-text-gray);
}

.section-light .process-step-desc {
    color: var(--color-text-dark-2);
}

/* ===== Table ===== */
.data-table {
    width: 100%;
    border-collapse: collapse;
    border-radius: 12px;
    overflow: hidden;
}

.section-dark .data-table,
.section-dark-2 .data-table {
    background: var(--color-bg-card);
}

.section-light .data-table {
    background: white;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

.data-table thead tr {
    background: var(--color-accent);
}

.data-table th {
    padding: 16px 24px;
    text-align: left;
    font-size: 15px;
    font-weight: 600;
    color: white;
}

.data-table td {
    padding: 16px 24px;
    font-size: 14px;
    line-height: 1.6;
    border-bottom: 1px solid var(--color-border);
}

.section-dark .data-table td,
.section-dark-2 .data-table td {
    color: var(--color-text-gray);
    border-bottom-color: var(--color-border);
}

.section-light .data-table td {
    color: var(--color-text-dark-2);
    border-bottom-color: var(--color-border-light);
}

.data-table tbody tr:hover {
    background: rgba(37, 99, 235, 0.05);
}

.data-table td:first-child {
    font-weight: 600;
}

.section-dark .data-table td:first-child,
.section-dark-2 .data-table td:first-child {
    color: var(--color-text-white);
}

.section-light .data-table td:first-child {
    color: var(--color-text-dark);
}

/* ===== Table ===== */
.data-table {
    width: 100%;
    border-collapse: collapse;
    border-radius: 12px;
    overflow: hidden;
}

.section-dark .data-table,
.section-dark-2 .data-table {
    background: var(--color-bg-card);
}

.section-light .data-table {
    background: white;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

.data-table thead tr {
    background: var(--color-accent);
}

.data-table th {
    padding: 16px 24px;
    text-align: left;
    font-size: 15px;
    font-weight: 600;
    color: white;
}

.data-table td {
    padding: 16px 24px;
    font-size: 14px;
    line-height: 1.6;
    border-bottom: 1px solid var(--color-border);
}

.section-dark .data-table td,
.section-dark-2 .data-table td {
    color: var(--color-text-gray);
    border-bottom-color: var(--color-border);
}

.section-light .data-table td {
    color: var(--color-text-dark-2);
    border-bottom-color: var(--color-border-light);
}

.data-table tbody tr:hover {
    background: rgba(37, 99, 235, 0.05);
}

.data-table td:first-child {
    font-weight: 600;
}

.section-dark .data-table td:first-child,
.section-dark-2 .data-table td:first-child {
    color: var(--color-text-white);
}

.section-light .data-table td:first-child {
    color: var(--color-text-dark);
}

/* AI案例表格增强样式 */
.ai-case-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    border-radius: 16px;
    overflow: hidden;
    font-size: 14px;
    background: rgba(15, 22, 38, 0.6);
    border: 1px solid rgba(37, 99, 235, 0.2);
}

.ai-case-table thead tr {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.9), rgba(6, 182, 212, 0.8));
}

.ai-case-table th {
    padding: 18px 20px;
    text-align: left;
    font-size: 15px;
    font-weight: 600;
    color: white;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.ai-case-table td {
    padding: 16px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    color: var(--color-text-gray);
    vertical-align: top;
}

.ai-case-table tbody tr:hover {
    background: rgba(37, 99, 235, 0.08);
}

.ai-case-table .platform-name {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    color: var(--color-text-white);
}

.ai-case-table .platform-icon {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-cyan));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    color: white;
    font-weight: 700;
}

.ai-case-table .rank-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
}

.rank-badge.positive {
    background: rgba(16, 185, 129, 0.15);
    color: #10B981;
}

.rank-badge.neutral {
    background: rgba(245, 158, 11, 0.15);
    color: #F59E0B;
}

.rank-badge.negative {
    background: rgba(239, 68, 68, 0.15);
    color: #EF4444;
}

.ai-case-table .source-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.ai-case-table .source-tag {
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 12px;
    background: rgba(37, 99, 235, 0.15);
    color: var(--color-accent-light);
    border: 1px solid rgba(37, 99, 235, 0.2);
}

/* ===== AI购物助手专区 ===== */
.ai-commerce-section {
    background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
}

.ai-commerce-section .section-title {
    color: var(--color-text-dark);
}

.ai-commerce-section .section-subtitle {
    color: var(--color-text-dark-2);
    max-width: 760px;
}

.ai-commerce-section .card {
    padding: 36px 28px;
    border-radius: 16px;
}

.ai-commerce-section .card-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-cyan));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 20px;
}

.ai-commerce-summary {
    margin-top: 40px;
    padding: 28px 32px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.08), rgba(6, 182, 212, 0.05));
    border: 1px solid rgba(37, 99, 235, 0.15);
    border-radius: 14px;
    text-align: center;
}

.ai-commerce-summary p {
    font-size: 17px;
    color: var(--color-text-dark);
    margin: 0;
}

.ai-commerce-summary p strong {
    font-weight: 700;
}

.ai-commerce-summary .highlight-text {
    margin-top: 8px;
    font-size: 16px;
    color: var(--color-accent);
    font-weight: 600;
}

/* 产品卡片大图模式 */
.product-hero-card {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(6, 182, 212, 0.05));
    border: 1px solid rgba(37, 99, 235, 0.2);
    border-radius: 20px;
    padding: 40px;
    margin-bottom: 30px;
}

.product-hero-card .product-title-row {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.product-hero-card .product-icon-large {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-cyan));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: white;
}

.product-hero-card h3 {
    font-size: 26px;
    font-weight: 700;
    color: var(--color-text-white);
}

.product-hero-card p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text-gray);
    margin-bottom: 20px;
}

.product-hero-card .feature-grid-mini {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.product-hero-card .feature-item-mini {
    padding: 14px 16px;
    background: rgba(255, 255, 255, 0.04);
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.product-hero-card .feature-item-mini strong {
    color: var(--color-text-white);
    font-size: 14px;
}

.product-hero-card .feature-item-mini span {
    display: block;
    color: var(--color-text-gray);
    font-size: 13px;
    margin-top: 4px;
}

/* ===== CTA Section ===== */
.cta-section {
    padding: 100px 0;
    text-align: center;
    background: linear-gradient(135deg, #0A0E1A 0%, #0F2851 100%);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    width: 800px;
    height: 800px;
    border-radius: 50%;
    background: var(--color-accent);
    filter: blur(150px);
    opacity: 0.1;
    top: -300px;
    left: 50%;
    transform: translateX(-50%);
}

.cta-section .section-title {
    position: relative;
    z-index: 1;
}

.cta-section .section-subtitle {
    position: relative;
    z-index: 1;
    margin-bottom: 40px;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 40px;
    background: var(--color-accent);
    color: white;
    border-radius: 8px;
    font-size: 17px;
    font-weight: 600;
    transition: var(--transition);
    position: relative;
    z-index: 1;
    border: none;
    cursor: pointer;
}

.cta-button:hover {
    background: var(--color-accent-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--color-accent-glow);
}

/* ===== Footer ===== */
.footer {
    background: #060810;
    padding: 70px 0 30px;
    border-top: 1px solid var(--color-border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 50px;
    margin-bottom: 50px;
}

.footer-brand .footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    font-size: 20px;
    font-weight: 700;
    color: var(--color-text-white);
}

.footer-brand .footer-desc {
    font-size: 14px;
    line-height: 1.7;
    color: var(--color-text-gray);
    max-width: 350px;
}

.footer-col h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text-white);
    margin-bottom: 20px;
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a {
    font-size: 14px;
    color: var(--color-text-gray);
}

.footer-col ul li a:hover {
    color: var(--color-accent-light);
}

.footer-contact li {
    font-size: 14px;
    color: var(--color-text-gray);
    margin-bottom: 12px;
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: var(--color-text-gray);
}

/* ===== Page Hero (sub-pages) ===== */
.page-hero {
    padding: 140px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-hero-bg-1 { background: linear-gradient(135deg, #0A0E1A 0%, #0F2851 100%); }
.page-hero-bg-2 { background: linear-gradient(135deg, #0A0E1A 0%, #0D2A48 100%); }
.page-hero-bg-3 { background: linear-gradient(135deg, #0B1020 0%, #122845 100%); }

.page-hero .section-tag {
    margin-bottom: 24px;
}

.page-hero-title {
    font-size: 48px;
    font-weight: 800;
    color: var(--color-text-white);
    line-height: 1.3;
    margin-bottom: 20px;
    letter-spacing: 1px;
}

.page-hero-subtitle {
    font-size: 20px;
    color: rgba(255, 255, 255, 0.6);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ===== Industry Cards (Solutions) ===== */
.industry-card {
    padding: 36px 30px;
    border-radius: 16px;
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.section-dark .industry-card,
.section-dark-2 .industry-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
}

.section-light .industry-card {
    background: white;
    border: 1px solid var(--color-border-light);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

.industry-card:hover {
    transform: translateY(-6px);
    border-color: rgba(37, 99, 235, 0.4);
}

.industry-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    background: rgba(37, 99, 235, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-bottom: 20px;
    color: var(--color-accent-light);
}

.industry-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 16px;
}

.section-dark .industry-title,
.section-dark-2 .industry-title {
    color: var(--color-text-white);
}

.section-light .industry-title {
    color: var(--color-text-dark);
}

.industry-info {
    margin-bottom: 16px;
}

.industry-info p {
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 10px;
}

.section-dark .industry-info p,
.section-dark-2 .industry-info p {
    color: var(--color-text-gray);
}

.section-light .industry-info p {
    color: var(--color-text-dark-2);
}

.industry-info p strong {
    color: var(--color-accent-light);
    font-weight: 600;
    margin-right: 4px;
}

.section-light .industry-info p strong {
    color: var(--color-accent);
}

/* ===== Source System (Products) ===== */
.source-system {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.source-card {
    padding: 40px 32px;
    border-radius: 16px;
    text-align: center;
    position: relative;
    transition: var(--transition);
}

.source-card.level-1 {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.15), rgba(6, 182, 212, 0.1));
    border: 1px solid rgba(37, 99, 235, 0.3);
}

.source-card.level-2 {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
}

.source-card.level-3 {
    background: var(--color-bg-dark-3);
    border: 1px solid var(--color-border);
}

.source-card:hover {
    transform: translateY(-6px);
    border-color: rgba(37, 99, 235, 0.4);
}

.source-level {
    font-size: 14px;
    color: var(--color-accent-light);
    font-weight: 600;
    letter-spacing: 2px;
    margin-bottom: 8px;
}

.source-name {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-text-white);
    margin-bottom: 20px;
}

.source-desc {
    font-size: 15px;
    color: var(--color-text-gray);
    line-height: 1.7;
    margin-bottom: 24px;
}

.source-meta {
    display: flex;
    justify-content: center;
    gap: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--color-border);
}

.source-meta-item {
    text-align: center;
}

.source-meta-item .meta-value {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-accent-cyan);
}

.source-meta-item .meta-label {
    font-size: 12px;
    color: var(--color-text-gray);
    margin-top: 4px;
}

/* ===== Monitoring Metrics ===== */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 40px;
}

.metric-card {
    padding: 28px 24px;
    border-radius: 12px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.section-light .metric-card {
    background: white;
    border: 1px solid var(--color-border-light);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

.metric-card:hover {
    border-color: rgba(37, 99, 235, 0.4);
    transform: translateY(-4px);
}

.metric-name {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
}

.section-dark .metric-name,
.section-dark-2 .metric-name {
    color: var(--color-text-white);
}

.section-light .metric-name {
    color: var(--color-text-dark);
}

.metric-desc {
    font-size: 13px;
    line-height: 1.6;
}

.section-dark .metric-desc,
.section-dark-2 .metric-desc {
    color: var(--color-text-gray);
}

.section-light .metric-desc {
    color: var(--color-text-dark-2);
}

.metric-purpose {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--color-border);
    font-size: 12px;
    color: var(--color-accent-cyan);
    font-weight: 600;
}

/* ===== Contact Page ===== */
.contact-section {
    padding: 80px 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.contact-info h3 {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-text-white);
    margin-bottom: 24px;
}

.contact-info p {
    font-size: 16px;
    color: var(--color-text-gray);
    line-height: 1.8;
    margin-bottom: 30px;
}

.contact-detail {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 24px;
}

.contact-detail-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(37, 99, 235, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--color-accent-light);
    flex-shrink: 0;
}

.contact-detail-text h4 {
    font-size: 14px;
    color: var(--color-text-gray);
    margin-bottom: 6px;
    font-weight: 500;
}

.contact-detail-text p {
    font-size: 18px;
    color: var(--color-text-white);
    font-weight: 600;
    margin: 0;
}

.contact-form {
    padding: 40px;
    border-radius: 16px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
}

.contact-form h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-text-white);
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 14px;
    color: var(--color-text-gray);
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 14px 16px;
    background: var(--color-bg-dark);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    color: var(--color-text-white);
    font-size: 15px;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-submit {
    width: 100%;
    padding: 16px;
    background: var(--color-accent);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.form-submit:hover {
    background: var(--color-accent-light);
    transform: translateY(-1px);
}

/* ===== About Timeline ===== */
.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--color-accent), var(--color-accent-cyan));
}

.timeline-item {
    position: relative;
    padding-bottom: 40px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -48px;
    top: 4px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--color-accent);
    border: 3px solid var(--color-bg-dark);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

.timeline-year {
    font-size: 20px;
    font-weight: 800;
    color: var(--color-accent-cyan);
    margin-bottom: 8px;
}

.timeline-content {
    font-size: 15px;
    line-height: 1.8;
    color: var(--color-text-gray);
}

/* ===== Animation ===== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .card-grid-4 { grid-template-columns: repeat(2, 1fr); }
    .card-grid-5 { grid-template-columns: repeat(3, 1fr); }
    .metrics-grid { grid-template-columns: repeat(2, 1fr); }
    .process-grid { grid-template-columns: repeat(2, 1fr); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .source-system { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .banner-title { font-size: 40px; }
    .banner-subtitle { font-size: 18px; }
    .section-title { font-size: 32px; }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: var(--nav-height);
        left: 0;
        width: 100%;
        background: var(--color-bg-dark-2);
        flex-direction: column;
        padding: 20px;
        gap: 4px;
        border-bottom: 1px solid var(--color-border);
    }
    
    .nav-menu.open {
        display: flex;
    }
    
    .nav-menu a {
        width: 100%;
        padding: 12px 16px;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-cta {
        display: none;
    }
    
    .card-grid-2,
    .card-grid-3,
    .card-grid-4,
    .card-grid-5 { grid-template-columns: 1fr; }
    
    .metrics-grid { grid-template-columns: 1fr; }
    .process-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    
    .banner-title { font-size: 28px; }
    .banner-subtitle { font-size: 15px; }
    .banner-stats { flex-wrap: wrap; gap: 20px; }
    .banner-stat-item .stat-number { font-size: 32px; }
    
    .section { padding: 60px 0; }
    .section-title { font-size: 26px; }
    .page-hero-title { font-size: 30px; }
    
    .banner-arrow { display: none; }
    
/* ===== What is GEO ===== */
.geo-intro-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 50px;
    align-items: center;
    margin-top: 50px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.geo-intro-text {
    text-align: center;
}

.geo-intro-title {
    font-size: 28px;
    font-weight: 800;
    color: var(--color-text-dark);
    margin-bottom: 24px;
    line-height: 1.3;
}

.geo-intro-desc {
    font-size: 15px;
    color: var(--color-text-dark-2);
    line-height: 1.8;
    margin-bottom: 16px;
}

.geo-intro-desc strong {
    color: var(--color-text-dark);
    font-weight: 700;
}

.geo-intro-highlights {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin-top: 28px;
}

.geo-intro-highlight {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    background: white;
    border-radius: 12px;
    border: 1px solid var(--color-border-light);
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-dark);
}

.geo-highlight-num {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-cyan));
    color: white;
    border-radius: 50%;
    font-size: 13px;
    font-weight: 800;
    flex-shrink: 0;
}

.geo-intro-visual {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.06), rgba(6, 182, 212, 0.06));
    border: 1px solid rgba(37, 99, 235, 0.12);
    border-radius: 20px;
    padding: 32px;
}

.geo-chat-bubble {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 18px 20px;
    border-radius: 16px;
    background: white;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
    margin-bottom: 8px;
}

.geo-chat-bubble.ai-bubble {
    border: 1px solid rgba(37, 99, 235, 0.2);
}

.geo-chat-avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 800;
    flex-shrink: 0;
}

.user-bubble .geo-chat-avatar {
    background: var(--color-bg-card);
    color: var(--color-text-dark);
}

.ai-bubble .geo-chat-avatar {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-cyan));
    color: white;
}

.geo-chat-label {
    font-size: 12px;
    color: var(--color-text-gray);
    margin-bottom: 6px;
    font-weight: 600;
}

.geo-chat-text {
    font-size: 14px;
    color: var(--color-text-dark);
    line-height: 1.6;
}

.geo-chat-arrow {
    text-align: center;
    color: var(--color-accent);
    font-size: 22px;
    font-weight: 700;
    margin: 10px 0;
}

.geo-chat-result {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 16px;
}

.geo-result-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 16px;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: 24px;
    font-size: 13px;
    font-weight: 600;
    color: #059669;
}

.geo-result-icon {
    width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #10B981;
    color: white;
    border-radius: 50%;
    font-size: 11px;
}

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

.geo-value-card {
    padding: 30px;
    background: white;
    border-radius: 16px;
    border: 1px solid var(--color-border-light);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
    text-align: center;
}

.geo-value-card h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-text-dark);
    margin: 18px 0 12px;
}

.geo-value-card p {
    font-size: 14px;
    color: var(--color-text-dark-2);
    line-height: 1.7;
}

.geo-value-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    font-weight: 800;
    margin: 0 auto;
}

/* ===== Media Pool ===== */
.media-pool-showcase {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.06);
    border: 1px solid var(--color-border-light);
}

.media-pool-showcase img {
    width: 100%;
    height: auto;
    display: block;
}

.media-pool-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 30px;
    justify-content: center;
}

.media-pool-tag {
    padding: 10px 18px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    background: rgba(37, 99, 235, 0.08);
    color: var(--color-accent);
    border: 1px solid rgba(37, 99, 235, 0.15);
}

.media-pool-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 40px;
}

.media-pool-stat {
    text-align: center;
    padding: 24px;
    border-radius: 14px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
}

.media-pool-stat .stat-value {
    font-size: 32px;
    font-weight: 800;
    color: var(--color-accent-light);
    margin-bottom: 6px;
}

.media-pool-stat .stat-label {
    font-size: 14px;
    color: var(--color-text-gray);
}

/* ===== AI Commerce Loop ===== */
.ai-commerce-loop {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-top: 40px;
}

.ai-commerce-item {
    border-radius: 20px;
    overflow: hidden;
    background: white;
    border: 1px solid var(--color-border-light);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

.ai-commerce-item img {
    width: 100%;
    height: auto;
    display: block;
}

.ai-commerce-item .item-info {
    padding: 24px;
}

.ai-commerce-item .item-info h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-text-dark);
    margin-bottom: 8px;
}

.ai-commerce-item .item-info p {
    font-size: 14px;
    color: var(--color-text-dark-2);
    line-height: 1.7;
}

.ai-commerce-platforms {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-top: 40px;
    flex-wrap: wrap;
}

.ai-commerce-platform {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 24px;
    border-radius: 12px;
    background: white;
    border: 1px solid var(--color-border-light);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
    font-weight: 600;
    color: var(--color-text-dark);
}

.ai-commerce-platform .platform-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-cyan));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 12px;
    font-weight: 700;
}

/* ===== Case Gallery ===== */
.case-gallery {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.case-card {
    border-radius: 20px;
    overflow: hidden;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.case-card:hover {
    transform: translateY(-6px);
    border-color: rgba(37, 99, 235, 0.4);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
}

.case-card .case-header {
    padding: 28px 30px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.15), rgba(6, 182, 212, 0.08));
    border-bottom: 1px solid var(--color-border);
}

.case-card .case-industry {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-accent-cyan);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.case-card .case-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-text-white);
    margin-bottom: 10px;
}

.case-card .case-keyword {
    font-size: 14px;
    color: var(--color-text-gray);
}

.case-card .case-keyword span {
    color: var(--color-accent-light);
    font-weight: 600;
}

.case-card .case-image {
    width: 100%;
    height: auto;
    display: block;
    border-bottom: 1px solid var(--color-border);
}

.case-card .case-body {
    padding: 28px 30px;
}

.case-card .case-platforms {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.case-card .case-platform-tag {
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    background: rgba(37, 99, 235, 0.15);
    color: var(--color-accent-light);
    border: 1px solid rgba(37, 99, 235, 0.2);
}

.case-card .case-desc {
    font-size: 15px;
    color: var(--color-text-gray);
    line-height: 1.7;
    margin-bottom: 20px;
}

.case-card .case-results {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.case-card .case-result {
    text-align: center;
    padding: 16px 10px;
    border-radius: 10px;
    background: rgba(10, 14, 26, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.case-card .case-result .result-value {
    font-size: 20px;
    font-weight: 800;
    color: var(--color-accent-light);
    margin-bottom: 4px;
}

.case-card .case-result .result-label {
    font-size: 12px;
    color: var(--color-text-gray);
}

/* ===== Standards Page ===== */
.standards-toc {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 30px;
}

.standards-toc a {
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    background: rgba(255, 255, 255, 0.08);
    color: var(--color-text-gray);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.standards-toc a:hover {
    background: rgba(37, 99, 235, 0.15);
    color: var(--color-text-white);
    border-color: rgba(37, 99, 235, 0.3);
}

.standards-section {
    scroll-margin-top: calc(var(--nav-height) + 20px);
}

.compliance-table .compliance-good {
    background: rgba(16, 185, 129, 0.08);
    color: #10B981;
}

.compliance-table .compliance-bad {
    background: rgba(239, 68, 68, 0.08);
    color: #EF4444;
}

/* ===== Image Lightbox ===== */
.case-image-link {
    display: block;
    position: relative;
    overflow: hidden;
}

.case-image-link::after {
    content: '🔍 查看大图';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 12px;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
    color: white;
    font-size: 13px;
    font-weight: 600;
    text-align: center;
    opacity: 0;
    transition: var(--transition);
}

.case-image-link:hover::after {
    opacity: 1;
}

.case-image-link:hover img {
    transform: scale(1.02);
}

.case-image-link img {
    transition: var(--transition);
}

@media (max-width: 1024px) {
    .geo-intro-grid,
    .ai-commerce-loop,
    .case-gallery { grid-template-columns: 1fr; }
    .media-pool-stats { grid-template-columns: repeat(2, 1fr); }
    .case-card .case-results { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
    .geo-value-grid { grid-template-columns: 1fr; }
    .geo-intro-highlights { grid-template-columns: 1fr; }
    .media-pool-stats { grid-template-columns: repeat(2, 1fr); }
    .ai-commerce-loop { grid-template-columns: 1fr; }
    .case-gallery { grid-template-columns: 1fr; }
    .case-card .case-results { grid-template-columns: repeat(3, 1fr); }
    .standards-toc a { padding: 8px 14px; font-size: 13px; }
}