/* ===================================
   Cognalyze.cn - AI Agent 虚拟社会平台
   现代化设计样式表
   =================================== */

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

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --accent: #f472b6;
    --accent-dark: #ec4899;
    --bg-dark: #0a0a1a;
    --bg-darker: #050510;
    --bg-card: rgba(255, 255, 255, 0.02);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);
    --border: rgba(255, 255, 255, 0.08);
    --glow: rgba(99, 102, 241, 0.4);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
}

/* 动态背景 */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.bg-animation::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(244, 114, 182, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(99, 102, 241, 0.08) 0%, transparent 40%);
    animation: bgRotate 60s linear infinite;
}

@keyframes bgRotate {
    0% { transform: rotate(0deg) scale(1); }
    50% { transform: rotate(180deg) scale(1.1); }
    100% { transform: rotate(360deg) scale(1); }
}

/* 浮动粒子 */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--primary);
    border-radius: 50%;
    opacity: 0.3;
    animation: float 20s infinite ease-in-out;
}

.particle:nth-child(odd) {
    background: var(--accent);
}

@keyframes float {
    0%, 100% { transform: translateY(0) translateX(0); opacity: 0.3; }
    25% { transform: translateY(-100px) translateX(50px); opacity: 0.6; }
    50% { transform: translateY(-50px) translateX(-30px); opacity: 0.3; }
    75% { transform: translateY(-150px) translateX(20px); opacity: 0.5; }
}

/* 导航栏 */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1rem 2rem;
    background: rgba(10, 10, 26, 0.7);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: all 0.3s ease;
}

nav.scrolled {
    padding: 0.7rem 2rem;
    background: rgba(10, 10, 26, 0.95);
}

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

.logo {
    font-size: 1.6rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    cursor: pointer;
    transition: transform 0.3s;
}

.logo:hover {
    transform: scale(1.05);
}

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

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transition: width 0.3s;
}

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

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

.nav-cta {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    padding: 0.7rem 1.8rem;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.5);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: 0.3s;
}

/* 主页英雄区 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 8rem 2rem 4rem;
    position: relative;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 1000px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.2rem;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(244, 114, 182, 0.1));
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 100px;
    font-size: 0.85rem;
    color: var(--primary-light);
    margin-bottom: 2rem;
    animation: fadeInUp 0.8s ease;
}

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

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.5); opacity: 0.5; }
}

.hero h1 {
    font-size: clamp(2.8rem, 7vw, 5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.8s ease 0.1s both;
}

.hero h1 .gradient {
    background: linear-gradient(135deg, var(--primary), var(--accent), var(--primary));
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientMove 5s ease infinite;
}

@keyframes gradientMove {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.5rem);
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-cta {
    display: flex;
    gap: 1.2rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.3s both;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    padding: 1.1rem 2.8rem;
    border-radius: 14px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 15px 50px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    padding: 1.1rem 2.8rem;
    border-radius: 14px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    border: 2px solid var(--border);
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.btn-secondary:hover {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
    transform: translateY(-4px);
}

/* Agent 示意图 */
.hero-illustration {
    margin-top: 4rem;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-graphic {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.hero-node {
    width: 100px;
    height: 100px;
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    transition: all 0.4s;
    position: relative;
}

.hero-node:hover {
    transform: translateY(-10px) scale(1.1);
    border-color: var(--primary);
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.3);
}

.hero-node span {
    font-size: 0.7rem;
    margin-top: 0.3rem;
    color: var(--text-muted);
}

.hero-connector {
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 2px;
    animation: connectorPulse 2s infinite;
}

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

/* 滚动指示器 */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-indicator svg {
    width: 30px;
    height: 30px;
    stroke: var(--text-muted);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-15px); }
    60% { transform: translateX(-50%) translateY(-7px); }
}

/* 通用区块样式 */
.section {
    padding: 8rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.section.alt-bg {
    background: linear-gradient(180deg, var(--bg-darker), var(--bg-dark));
    margin: 0;
    max-width: 100%;
}

.section-header {
    text-align: center;
    margin-bottom: 5rem;
}

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.2rem;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(244, 114, 182, 0.05));
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 100px;
    font-size: 0.8rem;
    color: var(--primary-light);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 1.5rem;
}

.section-header h2 {
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto;
}

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

/* 愿景卡片 */
.vision-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.vision-card {
    background: linear-gradient(135deg, var(--bg-card), rgba(99, 102, 241, 0.03));
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 3rem 2rem;
    text-align: center;
    transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}

.vision-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transition: transform 0.5s;
}

.vision-card:hover::before {
    transform: scaleX(1);
}

.vision-card:hover {
    transform: translateY(-10px);
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3);
}

.vision-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(244, 114, 182, 0.2));
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    transition: all 0.4s;
}

.vision-card:hover .vision-icon {
    transform: scale(1.1) rotate(5deg);
}

.vision-card h3 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.vision-card p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.8;
}

/* 解决方案流程 */
.solution-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin: 3rem 0;
    padding: 2.5rem;
    background: linear-gradient(135deg, var(--bg-card), rgba(99, 102, 241, 0.05));
    border-radius: 24px;
    border: 1px solid var(--border);
}

.flow-step {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 1rem 1.5rem;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(99, 102, 241, 0.05));
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 14px;
    font-weight: 500;
    transition: all 0.3s;
    cursor: pointer;
}

.flow-step:hover {
    transform: scale(1.05);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.25), rgba(99, 102, 241, 0.1));
}

.flow-step .number {
    width: 28px;
    height: 28px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
}

.flow-arrow {
    color: var(--primary);
    font-size: 1.5rem;
    animation: arrowPulse 1.5s infinite;
}

@keyframes arrowPulse {
    0%, 100% { opacity: 0.5; transform: translateX(0); }
    50% { opacity: 1; transform: translateX(3px); }
}

.solution-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.feature-card {
    background: linear-gradient(135deg, var(--bg-card), rgba(99, 102, 241, 0.03));
    border: 1px solid var(--border);
    border-radius: 28px;
    padding: 2.5rem;
    position: relative;
    overflow: hidden;
    transition: all 0.4s;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
}

.feature-card:hover {
    transform: translateY(-8px);
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
}

.feature-card h3 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.feature-card h3 .icon {
    font-size: 1.5rem;
}

.feature-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 1rem;
}

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

.feature-list li {
    padding: 0.7rem 0;
    color: var(--text-muted);
    font-size: 0.95rem;
    display: flex;
    align-items: flex-start;
    gap: 0.8rem;
    transition: all 0.3s;
}

.feature-list li:hover {
    color: var(--text-secondary);
    padding-left: 0.5rem;
}

.feature-list li::before {
    content: '→';
    color: var(--primary);
    font-weight: 600;
}

/* 架构图 */
.architecture {
    margin: 4rem 0;
    padding: 3rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 24px;
}

.architecture h3 {
    text-align: center;
    font-size: 1.3rem;
    margin-bottom: 2rem;
    color: var(--text-secondary);
}

.arch-diagram {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    align-items: center;
}

.arch-layer {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.arch-node {
    padding: 1rem 1.5rem;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(244, 114, 182, 0.05));
    border: 1px solid var(--border);
    border-radius: 12px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s;
    cursor: pointer;
}

.arch-node:hover {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(244, 114, 182, 0.1));
    border-color: var(--primary);
    transform: scale(1.05);
}

.arch-node.highlight {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-color: transparent;
    color: white;
}

.arch-connector-v {
    width: 2px;
    height: 30px;
    background: linear-gradient(to bottom, var(--primary), var(--accent));
    opacity: 0.5;
}

/* 优势卡片 */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.advantage-card {
    background: linear-gradient(135deg, var(--bg-card), rgba(99, 102, 241, 0.03));
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 2.5rem;
    text-align: center;
    transition: all 0.4s;
}

.advantage-card:hover {
    transform: translateY(-8px);
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.2);
}

.advantage-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(244, 114, 182, 0.2));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

.advantage-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.advantage-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.8;
}

/* 应用场景 */
.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
}

.scenario-card {
    background: linear-gradient(135deg, var(--bg-card), rgba(99, 102, 241, 0.03));
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 2.5rem 2rem;
    text-align: center;
    transition: all 0.4s;
}

.scenario-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary);
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.2);
}

.scenario-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(244, 114, 182, 0.2));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
}

.scenario-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.scenario-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.8;
}

/* 联系表单 */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-form {
    background: linear-gradient(135deg, var(--bg-card), rgba(99, 102, 241, 0.03));
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 2.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text-primary);
    font-family: inherit;
    transition: all 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.05);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.full-width {
    width: 100%;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, var(--bg-card), rgba(99, 102, 241, 0.03));
    border: 1px solid var(--border);
    border-radius: 16px;
    transition: all 0.3s;
}

.info-item:hover {
    border-color: rgba(99, 102, 241, 0.3);
    transform: translateY(-2px);
}

.info-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(244, 114, 182, 0.2));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.info-item h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.3rem;
}

.info-item p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

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

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-logo h3 {
    font-size: 1.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

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

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-section h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

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

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

.footer-section a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s;
}

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

.footer-bottom {
    max-width: 1400px;
    margin: 0 auto;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.beian-box {
    margin-top: 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.65rem;
}

.beian-link {
    color: #ffffff;
    font-size: 1rem;
    font-weight: 700;
    text-decoration: underline;
    text-underline-offset: 4px;
}

.beian-link:hover {
    color: var(--primary-light);
}

.record-note {
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.6;
}

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

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(10, 10, 26, 0.95);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 2rem;
        border-top: 1px solid var(--border);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-cta {
        display: none;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-graphic {
        gap: 1rem;
    }
    
    .hero-node {
        width: 80px;
        height: 80px;
        font-size: 1.5rem;
    }
    
    .hero-node span {
        font-size: 0.6rem;
    }
    
    .hero-connector {
        width: 40px;
    }
    
    .solution-flow {
        flex-direction: column;
        align-items: stretch;
    }
    
    .flow-arrow {
        transform: rotate(90deg);
    }
    
    .contact-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .section {
        padding: 6rem 1rem;
    }
    
    .hero {
        padding: 6rem 1rem 4rem;
    }
    
    .vision-grid,
    .solution-features,
    .advantages-grid,
    .scenarios-grid {
        grid-template-columns: 1fr;
    }
}