* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
    scroll-behavior: smooth;
}

:root {
    --primary: #00D4FF;
    --secondary: #7B61FF;
    --accent: #00FFB3;
    --dark: #050816;
    --darker: #020617;
    --card: rgba(15, 23, 42, 0.6);
    --card-border: rgba(148, 163, 184, 0.1);
    --text-primary: #F8FAFC;
    --text-secondary: #94A3B8;
    --glass: rgba(15, 23, 42, 0.8);
    --chip-gold: #FFD700;
    --chip-orange: #FF6B35;
    --circuit-blue: #0066FF;
}

body {
    background: var(--dark);
    color: var(--text-primary);
    overflow-x: hidden;
    min-height: 100vh;
}

/* 背景动画效果 */
.bg-gradient {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
}

.bg-gradient::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 20% 50%, rgba(0, 212, 255, 0.08) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(123, 97, 255, 0.06) 0%, transparent 40%),
                radial-gradient(circle at 40% 80%, rgba(0, 255, 179, 0.04) 0%, transparent 45%);
    animation: bgFloat 20s ease-in-out infinite;
}

@keyframes bgFloat {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(2%, 2%) rotate(1deg); }
    50% { transform: translate(-1%, 3%) rotate(-1deg); }
    75% { transform: translate(1%, -2%) rotate(2deg); }
}

/* 粒子效果 */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--primary);
    border-radius: 50%;
    opacity: 0.3;
    animation: particleFloat 15s linear infinite;
}

@keyframes particleFloat {
    0% { transform: translateY(100vh) scale(0); opacity: 0; }
    10% { opacity: 0.3; }
    90% { opacity: 0.3; }
    100% { transform: translateY(-100vh) scale(1); opacity: 0; }
}

/* 导航栏 */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 20px 6%;
    background: rgba(5, 8, 22, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(148, 163, 184, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

nav.scrolled {
    padding: 15px 6%;
    background: rgba(5, 8, 22, 0.9);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    -webkit-text-fill-color: #000;
}

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

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    padding: 10px 18px;
    border-radius: 10px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.nav-links a::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transform: translateX(-50%);
    transition: width 0.3s ease;
}

.nav-links a:hover {
    color: var(--text-primary);
    background: rgba(148, 163, 184, 0.08);
}

.nav-links a:hover::before {
    width: 60%;
}

.nav-links a.active {
    color: var(--primary);
    background: rgba(0, 212, 255, 0.1);
}

.nav-links a.active::before {
    width: 60%;
}

/* 导航按钮 */
.nav-cta {
    padding: 10px 24px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #000;
    border: none;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
}

.nav-expand-btn {
    background: transparent;
    border: 1px solid rgba(148, 163, 184, 0.2);
    color: var(--text-secondary);
    padding: 10px;
    border-radius: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.nav-expand-btn:hover {
    background: rgba(148, 163, 184, 0.1);
    border-color: var(--primary);
    color: var(--primary);
}

.menu-toggle {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    margin: 6px 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 2px;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: translateX(20px);
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* 页面加载效果 */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--darker);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.page-loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-content {
    text-align: center;
}

.loader-circle {
    width: 80px;
    height: 80px;
    border: 3px solid rgba(148, 163, 184, 0.1);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
    position: relative;
}

.loader-circle::before {
    content: '';
    position: absolute;
    top: 5px;
    left: 5px;
    right: 5px;
    bottom: 5px;
    border: 3px solid rgba(148, 163, 184, 0.1);
    border-top-color: var(--secondary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite reverse;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loader-text {
    font-size: 16px;
    color: var(--text-secondary);
    letter-spacing: 2px;
}

/* Hero Banner */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 140px 6% 80px;
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 900px;
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 100px;
    font-size: 13px;
    color: var(--primary);
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-badge-dot {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

.hero-title {
    font-size: 64px;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    background: linear-gradient(135deg, #fff 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-title span {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 600px;
    margin: 0 auto 40px;
    animation: fadeInUp 0.8s ease 0.6s both;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    animation: fadeInUp 0.8s ease 0.8s both;
}

.btn {
    padding: 16px 36px;
    border-radius: 12px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #000;
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 40px rgba(0, 212, 255, 0.4);
}

.btn-secondary {
    background: rgba(148, 163, 184, 0.1);
    color: var(--text-primary);
    border: 1px solid rgba(148, 163, 184, 0.2);
}

.btn-secondary:hover {
    background: rgba(148, 163, 184, 0.15);
    border-color: var(--primary);
    transform: translateY(-3px);
}

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

/* 滚动动画 */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    animation: bounce 2s ease-in-out infinite;
}

.scroll-indicator span {
    font-size: 12px;
    color: var(--text-secondary);
    letter-spacing: 2px;
    text-transform: uppercase;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-right: 2px solid var(--text-secondary);
    border-bottom: 2px solid var(--text-secondary);
    transform: rotate(45deg);
}

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

/* 通用Section样式 */
.section {
    padding: 120px 6%;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-label {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--primary);
    margin-bottom: 16px;
}

.section-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
    background: linear-gradient(135deg, #fff 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-desc {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.8;
}

/* 卡片样式 */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 1400px;
    margin: 0 auto;
}

@media (max-width: 1024px) {
    .cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .cards-grid {
        grid-template-columns: 1fr;
    }
}

.card {
    background: var(--card);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 40px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
    opacity: 0;
    transition: opacity 0.4s ease;
}

.card:hover {
    transform: translateY(-8px);
    border-color: rgba(0, 212, 255, 0.3);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3);
}

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

.card-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(123, 97, 255, 0.1));
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: 24px;
    transition: all 0.4s ease;
}

.card:hover .card-icon {
    transform: scale(1.1) rotate(5deg);
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(123, 97, 255, 0.2));
}

.card-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

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

/* 图片展示卡片 */
.image-card {
    background: var(--card);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.image-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3);
}

.image-card img {
    width: 100%;
    height: 240px;
    object-fit: cover;
    transition: transform 0.6s ease;
}

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

.image-card-content {
    padding: 30px;
}

.image-card-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.image-card-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 滚动渐入动画 */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 双列布局 */
.two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.two-col-img img {
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3);
}

.two-col-content h3 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 20px;
}

.two-col-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 15px;
    margin-bottom: 16px;
}

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

.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}

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

.feature-icon {
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    flex-shrink: 0;
    color: #000;
}

.feature-text {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 统计数字展示 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.stat-item {
    text-align: center;
    padding: 40px 30px;
    background: var(--card);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    transition: all 0.4s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
    border-color: rgba(0, 212, 255, 0.3);
}

.stat-number {
    font-size: 48px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

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

/* Footer */
footer {
    background: rgba(2, 6, 23, 0.8);
    border-top: 1px solid rgba(148, 163, 184, 0.1);
    padding: 60px 6% 30px;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand {
    max-width: 320px;
}

.footer-brand .logo {
    margin-bottom: 20px;
}

.footer-brand .logo img {
    height: 28px;
    max-width: 180px;
    object-fit: contain;
}

/* 轮播图样式 */
.carousel {
    position: relative;
    width: 100%;
    height: 600px;
    overflow: hidden;
}

.carousel-inner {
    position: relative;
    width: 100%;
    height: 100%;
}

.carousel-item {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease;
}

.carousel-item.active {
    opacity: 1;
}

.carousel-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.carousel-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(2, 6, 23, 0.85), rgba(2, 6, 23, 0.6));
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-controls {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 15px;
    z-index: 10;
}

.carousel-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.carousel-dot.active {
    background: var(--primary);
    width: 36px;
    border-radius: 6px;
}

.carousel-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: rgba(0, 0, 0, 0.4);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 24px;
    cursor: pointer;
    z-index: 10;
    transition: all 0.3s ease;
}

.carousel-arrow:hover {
    background: var(--primary);
}

.carousel-arrow.prev {
    left: 30px;
}

.carousel-arrow.next {
    right: 30px;
}

/* 页面轮播背景 */
.page-carousel-bg {
    position: relative;
    height: 500px;
    overflow: hidden;
}

.page-carousel-bg .carousel-item {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1.5s ease;
}

.page-carousel-bg .carousel-item.active {
    opacity: 1;
}

.page-carousel-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.page-carousel-bg .carousel-overlay {
    background: linear-gradient(135deg, rgba(2, 6, 23, 0.85), rgba(2, 6, 23, 0.5));
}

@media (max-width: 768px) {
    .carousel {
        height: 400px;
    }
    
    .page-carousel-bg {
        height: 350px;
    }
    
    .carousel-arrow {
        width: 40px;
        height: 40px;
        font-size: 18px;
    }
    
    .carousel-arrow.prev {
        left: 15px;
    }
    
    .carousel-arrow.next {
        right: 15px;
    }
}

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

.footer-section h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-section a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    padding: 8px 0;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    border-top: 1px solid rgba(148, 163, 184, 0.1);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    color: var(--text-secondary);
    font-size: 13px;
}

.footer-social {
    display: flex;
    gap: 16px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(148, 163, 184, 0.1);
    border: 1px solid rgba(148, 163, 184, 0.2);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-social a:hover {
    background: rgba(0, 212, 255, 0.1);
    border-color: var(--primary);
    color: var(--primary);
}

/* 页面Banner */
.page-banner {
    padding: 180px 6% 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-banner h1 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 16px;
    background: linear-gradient(135deg, #fff 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-banner p {
    font-size: 16px;
    color: var(--text-secondary);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .two-col {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    nav {
        padding: 15px 5%;
    }
    
    nav .logo {
        font-size: 16px;
        gap: 8px;
    }
    
    nav .logo img {
        height: 32px;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: rgba(5, 8, 22, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 100px 30px 40px;
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        align-items: flex-start;
        gap: 0;
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .nav-links a {
        padding: 16px 0;
        width: 100%;
        font-size: 16px;
        border-bottom: 1px solid rgba(148, 163, 184, 0.1);
    }
    
    .nav-cta {
        display: none;
    }
    
    .hero {
        padding: 120px 5% 60px;
        min-height: auto;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-subtitle {
        font-size: 15px;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .section {
        padding: 80px 5%;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .cards-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-number {
        font-size: 36px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .page-banner {
        padding: 140px 5% 60px;
    }
    
    .page-banner h1 {
        font-size: 32px;
    }
}

@media (max-width: 480px) {
    nav .logo {
        font-size: 14px;
        gap: 6px;
    }
    
    nav .logo img {
        height: 28px;
    }
}

/* ===== 云计算和AI芯片风格 ===== */
.chip-card {
    position: relative;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.05), rgba(123, 97, 255, 0.05));
    border: 1px solid rgba(255, 215, 0, 0.2);
    border-radius: 20px;
    overflow: hidden;
}
.chip-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0, 212, 255, 0.03) 2px, rgba(0, 212, 255, 0.03) 4px),
        repeating-linear-gradient(90deg, transparent, transparent 2px, rgba(123, 97, 255, 0.03) 2px, rgba(123, 97, 255, 0.03) 4px);
    pointer-events: none;
}
.chip-card:hover {
    border-color: rgba(255, 215, 0, 0.4);
    box-shadow: 0 0 40px rgba(255, 215, 0, 0.1);
}

.circuit-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(90deg, rgba(0, 212, 255, 0.1) 1px, transparent 1px),
        linear-gradient(rgba(0, 212, 255, 0.1) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.5;
    pointer-events: none;
    animation: circuit-flow 20s linear infinite;
}
@keyframes circuit-flow {
    0% { background-position: 0 0; }
    100% { background-position: 40px 40px; }
}

.ai-chip-glow {
    position: relative;
}
.ai-chip-glow::after {
    content: '';
    position: absolute;
    top: -1px;
    left: -1px;
    right: -1px;
    bottom: -1px;
    background: linear-gradient(45deg, var(--primary), var(--secondary), var(--accent), var(--primary));
    background-size: 400% 400%;
    border-radius: 22px;
    z-index: -1;
    animation: glow-border 4s ease infinite;
    opacity: 0.3;
}
@keyframes glow-border {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.cloud-particle {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle, var(--primary), transparent);
    opacity: 0.1;
    filter: blur(20px);
    animation: cloud-float 8s ease-in-out infinite;
}
@keyframes cloud-float {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-20px) scale(1.1); }
}

.data-stream {
    position: absolute;
    top: 0;
    width: 2px;
    height: 100%;
    background: linear-gradient(to bottom, transparent, var(--primary), transparent);
    animation: data-flow 2s linear infinite;
    opacity: 0.3;
}
@keyframes data-flow {
    0% { transform: translateY(-100%); }
    100% { transform: translateY(100%); }
}

.tech-feature-img {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 212, 255, 0.15);
    position: relative;
}
.tech-feature-img img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.5s ease;
}
.tech-feature-img:hover img {
    transform: scale(1.05);
}
.tech-feature-img::before {
    content: '';
    position: absolute;
    inset: 0;
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 16px;
    pointer-events: none;
}

/* ===== 点击加载动画 ===== */
.click-overlay {
    position: fixed;
    inset: 0;
    background: rgba(2, 6, 23, 0.95);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}
.click-overlay.active {
    opacity: 1;
    pointer-events: all;
}
.click-loader {
    width: 80px;
    height: 80px;
    position: relative;
}
.click-loader-ring {
    position: absolute;
    inset: 0;
    border: 3px solid transparent;
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: click-spin 1s linear infinite;
}
.click-loader-ring:nth-child(2) {
    inset: 8px;
    border-top-color: var(--secondary);
    animation-delay: 0.15s;
}
.click-loader-ring:nth-child(3) {
    inset: 16px;
    border-top-color: var(--accent);
    animation-delay: 0.3s;
}
@keyframes click-spin {
    100% { transform: rotate(360deg); }
}
.click-loader-text {
    margin-top: 20px;
    color: var(--text-primary);
    font-size: 16px;
    letter-spacing: 2px;
    text-transform: uppercase;
}
.click-loader-dots::after {
    content: '';
    animation: dots 1.5s steps(4, end) infinite;
}
@keyframes dots {
    0%, 20% { content: ''; }
    40% { content: '.'; }
    60% { content: '..'; }
    80%, 100% { content: '...'; }
}

/* ===== Logo样式 ===== */
nav .logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
}
nav .logo img {
    height: 40px;
    width: auto;
}
nav.expanded .logo img {
    height: 52px;
}

/* ===== 特色内容区块 ===== */
.feature-section {
    padding: 100px 6%;
}
.feature-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 60px;
    max-width: 1400px;
    margin: 0 auto;
}
.feature-item {
    display: flex;
    flex-direction: column;
    gap: 24px;
}
.feature-item.reverse {
    flex-direction: column-reverse;
}
@media (max-width: 1024px) {
    .feature-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

/* ===== 时间轴样式 ===== */
.timeline-container {
    position: relative;
    padding: 20px 0;
}

.timeline-line {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    height: 100%;
    background: linear-gradient(180deg, var(--primary), var(--secondary), var(--accent));
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    margin-bottom: 60px;
    display: flex;
    align-items: center;
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-dot {
    width: 20px;
    height: 20px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    position: relative;
    z-index: 2;
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.4);
    flex-shrink: 0;
}

.timeline-dot::before {
    content: '';
    position: absolute;
    width: 34px;
    height: 34px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 50%;
    top: -7px;
    left: -7px;
    z-index: -1;
}

.timeline-content {
    width: 45%;
    background: var(--card);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 25px 30px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    position: relative;
}

.timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 60px rgba(0, 212, 255, 0.15);
    border-color: rgba(0, 212, 255, 0.3);
}

.timeline-content .period {
    display: inline-block;
    padding: 6px 16px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(123, 97, 255, 0.2));
    color: var(--primary);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 12px;
}

.timeline-content h4 {
    font-size: 22px;
    color: var(--text-primary);
    margin-bottom: 10px;
    font-weight: 700;
}

.timeline-content p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 15px;
}

@media (max-width: 768px) {
    .timeline-line {
        left: 20px;
    }
    
    .timeline-item {
        flex-direction: row !important;
        padding-left: 50px;
    }
    
    .timeline-content {
        width: 100%;
    }
    
    .timeline-dot {
        margin-right: 0;
    }
}

/* 首页风险保障体系 - 一行4个卡片 */
.homepage-risk-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 1400px;
    margin: 0 auto;
}

@media (max-width: 1024px) {
    .homepage-risk-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .homepage-risk-grid {
        grid-template-columns: 1fr;
    }
}

/* 关于我们页面 - 一行4个卡片 */
.about-page-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 1400px;
    margin: 0 auto;
}

@media (max-width: 1024px) {
    .about-page-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .about-page-grid {
        grid-template-columns: 1fr;
    }
}