/* ==================== 变量定义 ==================== */
:root {
    /* 主题色 */
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --accent-color: #ec4899;
    
    /* 中性色 */
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --border-color: #e5e7eb;
    
    /* 渐变色 */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* 动画时间 */
    --transition-fast: 150ms;
    --transition-normal: 300ms;
    --transition-slow: 500ms;
}

/* 深色主题 */
[data-theme="dark"] {
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --bg-primary: #111827;
    --bg-secondary: #1f2937;
    --border-color: #374151;
}

/* ==================== 全局样式 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==================== 预加载动画 ==================== */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s, visibility 0.5s;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.thinker-logo-loader {
    text-align: center;
}

.brain-animation {
    font-size: 60px;
    color: var(--primary-color);
    animation: pulse 1.5s ease-in-out infinite;
    margin-bottom: 20px;
}

.loading-text {
    font-size: 24px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: shimmer 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

@keyframes shimmer {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

/* ==================== 导航栏 ==================== */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1rem 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all var(--transition-normal);
}

[data-theme="dark"] .navbar {
    background: rgba(17, 24, 39, 0.95);
}

.navbar.scrolled {
    padding: 0.5rem 0;
    box-shadow: var(--shadow-md);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.nav-brand {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    cursor: pointer;
}

.nav-brand i {
    margin-right: 10px;
    font-size: 1.8rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: color var(--transition-fast);
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width var(--transition-normal);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.theme-switch {
    background: none;
    border: none;
    font-size: 1.2rem;
    color: var(--text-primary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.theme-switch:hover {
    background: var(--bg-secondary);
    transform: rotate(20deg);
}

.nav-burger {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-burger span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: all var(--transition-normal);
}

.nav-burger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-burger.active span:nth-child(2) {
    opacity: 0;
}

.nav-burger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ==================== 英雄区 ==================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.neural-network {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(236, 72, 153, 0.1) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
}

.particle-field {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(2px 2px at 10% 20%, var(--primary-color), transparent),
        radial-gradient(2px 2px at 50% 60%, var(--secondary-color), transparent),
        radial-gradient(1px 1px at 90% 90%, var(--accent-color), transparent);
    background-size: 200px 200px;
    animation: particle-move 30s linear infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    33% { transform: translateY(-20px) rotate(1deg); }
    66% { transform: translateY(20px) rotate(-1deg); }
}

@keyframes particle-move {
    0% { transform: translate(0, 0); }
    100% { transform: translate(-100px, -100px); }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    z-index: 1;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.highlight {
    color: var(--primary-color);
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

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

/* ==================== 按钮样式 ==================== */
.btn {
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all var(--transition-normal);
    text-decoration: none;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.btn-glow {
    animation: glow 2s ease-in-out infinite;
}

@keyframes glow {
    0%, 100% { box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3); }
    50% { box-shadow: 0 4px 25px rgba(99, 102, 241, 0.5); }
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.btn-white {
    background: white;
    color: var(--primary-color);
}

.btn-outline-white {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-outline-white:hover {
    background: white;
    color: var(--primary-color);
}

.btn-block {
    width: 100%;
    justify-content: center;
}

/* ==================== 思维动画 ==================== */
.thinking-animation {
    position: relative;
    width: 400px;
    height: 400px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.orbit {
    position: absolute;
    border: 2px solid rgba(99, 102, 241, 0.2);
    border-radius: 50%;
    animation: rotate 20s linear infinite;
}

.orbit-1 {
    width: 300px;
    height: 300px;
    animation-duration: 15s;
}

.orbit-2 {
    width: 250px;
    height: 250px;
    animation-duration: 12s;
    animation-direction: reverse;
}

.orbit-3 {
    width: 350px;
    height: 350px;
    animation-duration: 18s;
}

.orbit::before {
    content: '';
    position: absolute;
    width: 10px;
    height: 10px;
    background: var(--primary-color);
    border-radius: 50%;
    top: -5px;
    left: 50%;
    transform: translateX(-50%);
    box-shadow: 0 0 20px var(--primary-color);
}

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

.core-brain {
    font-size: 80px;
    color: var(--primary-color);
    filter: drop-shadow(0 0 30px rgba(99, 102, 241, 0.5));
    animation: pulse 2s ease-in-out infinite;
}

/* ==================== 滚动提示 ==================== */
.scroll-hint {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    animation: bounce 2s infinite;
}

.mouse {
    width: 30px;
    height: 50px;
    border: 2px solid var(--text-secondary);
    border-radius: 15px;
    margin: 0 auto 10px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 10px;
    background: var(--text-secondary);
    border-radius: 2px;
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

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

@keyframes scroll {
    0% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(15px); }
}

/* ==================== Section 通用样式 ==================== */
section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

/* ==================== 特性部分 ==================== */
.features {
    background: var(--bg-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.feature-card:hover::before {
    transform: translateX(0);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1rem;
}

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

.tag {
    padding: 4px 12px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
}

/* ==================== 解决方案部分 ==================== */
.solutions {
    background: var(--bg-primary);
}

.solutions-tabs {
    max-width: 1000px;
    margin: 0 auto;
}

.tab-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 12px 24px;
    background: var(--bg-secondary);
    border: none;
    border-radius: 8px;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.tab-btn:hover {
    background: var(--primary-color);
    color: white;
}

.tab-btn.active {
    background: var(--gradient-primary);
    color: white;
}

.tab-pane {
    display: none;
    animation: fadeIn var(--transition-normal);
}

.tab-pane.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.solution-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.solution-text h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.solution-text p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.solution-features {
    list-style: none;
    margin-bottom: 2rem;
}

.solution-features li {
    padding: 0.75rem 0;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.solution-features i {
    color: var(--primary-color);
}

.solution-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-placeholder {
    width: 100%;
    max-width: 400px;
    height: 400px;
    background: var(--gradient-primary);
    border-radius: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 80px;
    color: white;
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.3);
}

/* ==================== 洞察部分 ==================== */
.insights {
    background: var(--bg-secondary);
}

.insights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.insight-card {
    background: var(--bg-primary);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.insight-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.insight-image {
    height: 200px;
    background: var(--gradient-primary);
    position: relative;
    overflow: hidden;
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: flex-end;
    padding: 1rem;
}

.category {
    background: var(--primary-color);
    color: white;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 0.875rem;
    font-weight: 600;
}

.insight-content {
    padding: 1.5rem;
}

.insight-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.insight-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.insight-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.insight-meta span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* ==================== 团队部分 ==================== */
.team {
    background: var(--bg-primary);
}

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

.team-member {
    text-align: center;
    transition: all var(--transition-normal);
}

.team-member:hover {
    transform: translateY(-5px);
}

.member-image {
    position: relative;
    width: 200px;
    height: 200px;
    margin: 0 auto 1rem;
    overflow: hidden;
    border-radius: 50%;
}

.member-image .image-placeholder {
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 60px;
    color: white;
}

.member-socials {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.8);
    padding: 10px;
    display: flex;
    justify-content: center;
    gap: 1rem;
    transform: translateY(100%);
    transition: transform var(--transition-normal);
}

.team-member:hover .member-socials {
    transform: translateY(0);
}

.member-socials a {
    color: white;
    font-size: 1.2rem;
    transition: color var(--transition-fast);
}

.member-socials a:hover {
    color: var(--primary-color);
}

.team-member h4 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.team-member p {
    color: var(--text-secondary);
}

/* ==================== CTA 部分 ==================== */
.cta {
    background: var(--gradient-primary);
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: rotate 30s linear infinite;
}

.cta-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

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

.cta-content p {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
}

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

/* ==================== 联系部分 ==================== */
.contact {
    background: var(--bg-secondary);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    max-width: 1000px;
    margin: 0 auto;
}

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

.info-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.info-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.info-text h4 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.info-text p {
    color: var(--text-secondary);
}

.contact-form {
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group textarea {
    resize: vertical;
    font-family: inherit;
}

/* ==================== 页脚 ==================== */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 20px;
}

.footer-top {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.footer-logo i {
    margin-right: 10px;
}

.footer-brand p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

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

.footer-socials a {
    width: 40px;
    height: 40px;
    background: var(--bg-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.footer-socials a:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-3px);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

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

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

.footer-column li {
    margin-bottom: 0.75rem;
}

.footer-column a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    color: var(--text-secondary);
}

.footer-lang {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
}

.footer-lang select {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 4px 8px;
    color: var(--text-primary);
}

/* ==================== 返回顶部按钮 ==================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 999;
    box-shadow: var(--shadow-lg);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--bg-primary);
        flex-direction: column;
        padding: 2rem;
        transition: left var(--transition-normal);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-burger {
        display: flex;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .thinking-animation {
        width: 300px;
        height: 300px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .solution-detail {
        grid-template-columns: 1fr;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .footer-top {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}