/* 夏清珩科技 - 暗黑科技风网站样式 */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: rgba(18, 18, 26, 0.8);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);
    --accent-cyan: #00d4ff;
    --accent-purple: #a855f7;
    --accent-pink: #ec4899;
    --accent-blue: #3b82f6;
    --gradient-1: linear-gradient(135deg, #00d4ff 0%, #a855f7 50%, #ec4899 100%);
    --gradient-2: linear-gradient(90deg, #00d4ff 0%, #3b82f6 100%);
    --font-display: 'Space Grotesk', sans-serif;
    --font-body: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.3);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
    --border-subtle: rgba(255, 255, 255, 0.1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* 动态背景 */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.5;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: var(--accent-cyan);
    top: -200px;
    right: -200px;
    animation-delay: 0s;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: var(--accent-purple);
    bottom: -150px;
    left: -150px;
    animation-delay: -7s;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: var(--accent-pink);
    top: 50%;
    left: 50%;
    animation-delay: -14s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.9); }
}

.grid-overlay {
    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: 50px 50px;
    mask-image: linear-gradient(to bottom, transparent 0%, black 20%, black 80%, transparent 100%);
}

/* 导航 */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1rem 0;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--text-primary);
}

.logo-symbol {
    font-size: 1.8rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-2);
    transition: width 0.3s ease;
}

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

.nav-link:hover::after {
    width: 100%;
}

.nav-link.cta {
    background: var(--gradient-2);
    color: white;
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
}

.nav-link.cta::after {
    display: none;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 8rem 2rem 4rem;
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
}

.hero-content {
    flex: 1;
    max-width: 700px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 100px;
    font-size: 0.875rem;
    color: var(--accent-cyan);
    margin-bottom: 2rem;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--accent-cyan);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

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

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 6vw, 5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.title-line {
    display: block;
}

.title-line.highlight {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    margin-bottom: 4rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 12px;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gradient-2);
    color: white;
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.5);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
}

.hero-stats {
    display: flex;
    gap: 3rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-num, .stat-suffix {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* Hero Visual - Tech Sphere */
.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 500px;
}

.tech-sphere {
    position: relative;
    width: 400px;
    height: 400px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.sphere-ring {
    position: absolute;
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 50%;
    animation: rotate 20s linear infinite;
}

.ring-1 {
    width: 300px;
    height: 300px;
    animation-duration: 15s;
    border-color: rgba(0, 212, 255, 0.4);
}

.ring-2 {
    width: 380px;
    height: 380px;
    animation-duration: 25s;
    animation-direction: reverse;
    border-color: rgba(168, 85, 247, 0.3);
}

.ring-3 {
    width: 460px;
    height: 460px;
    animation-duration: 35s;
    border-color: rgba(236, 72, 153, 0.2);
}

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

.sphere-core {
    font-size: 6rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: glow 3s ease-in-out infinite alternate;
}

@keyframes glow {
    from { filter: drop-shadow(0 0 20px rgba(0, 212, 255, 0.5)); }
    to { filter: drop-shadow(0 0 40px rgba(236, 72, 153, 0.5)); }
}

/* Section Headers */
.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 4rem;
    padding: 0 2rem;
}

.section-tag {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    color: var(--accent-cyan);
    margin-bottom: 1rem;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: 1rem;
}

.section-desc {
    color: var(--text-secondary);
    font-size: 1.125rem;
}

/* Services Section */
.services {
    padding: 6rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 1.5rem;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 20px;
    padding: 2rem;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-1);
    opacity: 0;
    transition: opacity 0.4s ease;
}

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

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

.service-card.featured {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(168, 85, 247, 0.1) 100%);
    border-color: rgba(0, 212, 255, 0.3);
}

.card-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--accent-pink);
    color: white;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.25rem 0.75rem;
    border-radius: 100px;
}

.card-icon {
    width: 60px;
    height: 60px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.card-icon svg {
    width: 28px;
    height: 28px;
    color: var(--accent-cyan);
}

.service-card h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.service-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    list-style: none;
}

.tech-tags li {
    padding: 0.35rem 0.75rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-subtle);
    border-radius: 6px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Tech Stack Marquee */
.tech-stack {
    padding: 4rem 0;
    overflow: hidden;
}

.tech-marquee {
    position: relative;
}

.tech-marquee::before,
.tech-marquee::after {
    content: '';
    position: absolute;
    top: 0;
    width: 150px;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

.tech-marquee::before {
    left: 0;
    background: linear-gradient(to right, var(--bg-primary), transparent);
}

.tech-marquee::after {
    right: 0;
    background: linear-gradient(to left, var(--bg-primary), transparent);
}

.marquee-track {
    display: flex;
    gap: 3rem;
    animation: marquee 30s linear infinite;
}

@keyframes marquee {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

.tech-item {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--text-muted);
    white-space: nowrap;
    opacity: 0.6;
    transition: opacity 0.3s;
}

.tech-item:hover {
    opacity: 1;
    color: var(--accent-cyan);
}

/* Solutions Section */
.solutions {
    padding: 6rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.solutions-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.solution-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.4s ease;
}

.solution-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
}

.solution-visual {
    position: relative;
    height: 150px;
    background: linear-gradient(135deg, rgba(255,255,255,0.05) 0%, transparent 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.solution-glow {
    position: absolute;
    width: 200px;
    height: 200px;
    background: var(--accent);
    filter: blur(60px);
    opacity: 0.2;
    border-radius: 50%;
}

.solution-icon {
    font-size: 3rem;
    position: relative;
    z-index: 1;
}

.solution-content {
    padding: 1.5rem;
}

.solution-content h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.solution-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.solution-link {
    color: var(--accent-cyan);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.solution-link:hover {
    color: var(--accent-purple);
}

/* Process Section */
.process {
    padding: 6rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.process-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.step {
    text-align: center;
    max-width: 200px;
}

.step-num {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 700;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.step h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.step p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.step-arrow {
    font-size: 1.5rem;
    color: var(--text-muted);
}

/* CTA Section */
.cta-section {
    position: relative;
    padding: 8rem 2rem;
    overflow: hidden;
}

.cta-bg {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    pointer-events: none;
}

.cta-orb {
    width: 100%;
    height: 100%;
    background: var(--gradient-1);
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.2;
    animation: pulse-glow 4s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% { transform: scale(1); opacity: 0.2; }
    50% { transform: scale(1.1); opacity: 0.3; }
}

.cta-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1rem;
}

.cta-content p {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: 2rem;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-glow {
    background: var(--gradient-2);
    color: white;
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.4);
}

.btn-glow:hover {
    box-shadow: 0 0 50px rgba(0, 212, 255, 0.6);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-subtle);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.05);
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-subtle);
    padding: 4rem 2rem 2rem;
}

.footer-grid {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand .logo {
    margin-bottom: 1rem;
}

.footer-desc {
    color: var(--text-secondary);
    max-width: 300px;
    margin-bottom: 1.5rem;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all 0.3s;
}

.social-link:hover {
    background: rgba(0, 212, 255, 0.2);
    transform: translateY(-2px);
}

.footer-links h4 {
    font-family: var(--font-display);
    font-size: 1rem;
    margin-bottom: 1rem;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s;
}

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

.footer-contact h4 {
    font-family: var(--font-display);
    font-size: 1rem;
    margin-bottom: 1rem;
}

.footer-contact p {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.footer-bottom {
    max-width: 1400px;
    margin: 0 auto;
    padding-top: 2rem;
    border-top: 1px solid var(--border-subtle);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.footer-bottom a {
    color: var(--text-muted);
}

/* Responsive */
@media (max-width: 1024px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 7rem;
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-visual {
        display: none;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .process-steps {
        flex-direction: column;
    }
    
    .step-arrow {
        transform: rotate(90deg);
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

/* Scroll animations */
.service-card, .solution-card {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease forwards;
}

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

/* Hover effects */
.service-card:hover .card-icon {
    transform: scale(1.1);
    background: rgba(0, 212, 255, 0.2);
}

.card-icon {
    transition: all 0.3s ease;
}

/* Cases Section */
.cases {
    padding: 6rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 1.5rem;
}

.case-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.4s ease;
}

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

.case-visual {
    height: 180px;
    position: relative;
    background: linear-gradient(135deg, rgba(0,212,255,0.2) 0%, rgba(168,85,247,0.2) 100%);
}

.case-overlay {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: rgba(0, 0, 0, 0.6);
    padding: 0.5rem 1rem;
    border-radius: 100px;
    backdrop-filter: blur(10px);
}

.case-category {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-cyan);
}

.case-content {
    padding: 1.5rem;
}

.case-content h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    margin-bottom: 0.75rem;
}

.case-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.case-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.case-tags span {
    padding: 0.3rem 0.75rem;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 6px;
    font-size: 0.75rem;
    color: var(--accent-cyan);
}

/* Team Section */
.team {
    padding: 6rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.team-member {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 20px;
    padding: 2rem;
    text-align: center;
    transition: all 0.4s ease;
}

.team-member:hover {
    transform: translateY(-4px);
    border-color: rgba(168, 85, 247, 0.3);
}

.member-avatar {
    width: 80px;
    height: 80px;
    background: var(--gradient-1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 2rem;
    font-weight: 700;
}

.team-member h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
}

.member-role {
    color: var(--accent-cyan);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.member-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Blog Section */
.blog {
    padding: 6rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.blog-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 20px;
    padding: 2rem;
    transition: all 0.4s ease;
}

.blog-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 212, 255, 0.3);
}

.blog-date {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

.blog-card h3 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.blog-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.blog-link {
    color: var(--accent-cyan);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
}

.blog-link:hover {
    color: var(--accent-purple);
}

/* 案例卡片视觉优化 */
.case-1 { background: linear-gradient(135deg, #1a365d 0%, #2c5282 50%, #00d4ff33 100%); }
.case-2 { background: linear-gradient(135deg, #553c9a 0%, #6b46c1 50%, #a855f733 100%); }
.case-3 { background: linear-gradient(135deg, #065f46 0%, #059669 50%, #4ecdc433 100%); }
.case-4 { background: linear-gradient(135deg, #7c2d12 0%, #c2410c 50%, #f9731633 100%); }
.case-5 { background: linear-gradient(135deg, #86198f 0%, #c026d3 50%, #ec489933 100%); }
.case-6 { background: linear-gradient(135deg, #1e40af 0%, #3b82f6 50%, #60a5fa33 100%); }

.case-visual::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100'%3E%3Cdefs%3E%3Cpattern id='grid' width='10' height='10' patternUnits='userSpaceOnUse'%3E%3Cpath d='M 10 0 L 0 0 0 10' fill='none' stroke='rgba(255,255,255,0.1)' stroke-width='0.5'/%3E%3C/pattern%3E%3C/defs%3E%3Crect width='100' height='100' fill='url(%23grid)'/%3E%3C/svg%3E");
    opacity: 0.5;
}

.case-visual::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background: rgba(255,255,255,0.1);
    border-radius: 20px;
    backdrop-filter: blur(10px);
}

.case-1::after { content: '🏦'; font-size: 40px; display: flex; align-items: center; justify-content: center; }
.case-2::after { content: '🤖'; font-size: 40px; display: flex; align-items: center; justify-content: center; }
.case-3::after { content: '🏥'; font-size: 40px; display: flex; align-items: center; justify-content: center; }
.case-4::after { content: '🏭'; font-size: 40px; display: flex; align-items: center; justify-content: center; }
.case-5::after { content: '🛒'; font-size: 40px; display: flex; align-items: center; justify-content: center; }
.case-6::after { content: '⛓️'; font-size: 40px; display: flex; align-items: center; justify-content: center; }

/* ===== 性能优化 ===== */
/* 图片懒加载占位 */
img {
    opacity: 0;
    transition: opacity 0.3s ease;
}
img.loaded {
    opacity: 1;
}

/* 减少重绘 */
.service-card, .case-card, .team-member, .blog-card {
    will-change: transform;
    transform: translateZ(0);
}

/* ===== 加载动画 ===== */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 99999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

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

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

.loader-logo {
    width: 80px;
    height: 80px;
    margin: 0 auto 1rem;
    animation: loaderPulse 1.5s ease-in-out infinite;
}

@keyframes loaderPulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(0.9); opacity: 0.7; }
}

.loader-text {
    font-family: var(--font-display);
    color: var(--accent-cyan);
    font-size: 1.2rem;
    letter-spacing: 4px;
}

/* ===== 滚动进度条 ===== */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: var(--gradient-1);
    z-index: 10001;
    transition: width 0.1s linear;
}

/* ===== 增强的悬停效果 ===== */
.service-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    transition: left 0.5s ease;
}

.service-card:hover::after {
    left: 100%;
}

/* ===== 打字机效果 ===== */
.typewriter {
    overflow: hidden;
    border-right: 2px solid var(--accent-cyan);
    white-space: nowrap;
    animation: typing 3s steps(20) 1s forwards, blink 0.7s step-end infinite;
    width: 0;
}

@keyframes typing {
    to { width: 100%; }
}

@keyframes blink {
    50% { border-color: transparent; }
}

/* ===== 视差滚动背景 ===== */
.parallax-layer {
    position: absolute;
    width: 120%;
    height: 120%;
    left: -10%;
    top: -10%;
    will-change: transform;
}

/* ===== 鼠标跟随光效 ===== */
.cursor-glow {
    position: fixed;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(0,212,255,0.15) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
    transform: translate(-50%, -50%);
    transition: opacity 0.3s ease;
}

/* ===== 图片占位符优化 ===== */
.case-visual {
    position: relative;
    overflow: hidden;
}

.case-visual .case-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 3rem;
    z-index: 2;
    filter: drop-shadow(0 4px 20px rgba(0,0,0,0.3));
}

/* ===== 平滑过渡优化 ===== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ===== 响应式字体优化 ===== */
@media (max-width: 768px) {
    :root {
        --font-display: 'Noto Sans SC', sans-serif;
    }
}