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

:root {
    --primary: #6C5CE7;
    --primary-dark: #5A4BD1;
    --secondary: #00CEC9;
    --accent: #FD79A8;
    --bg-dark: #0F1020;
    --bg-light: #FAFAFA;
    --text-dark: #2D3436;
    --text-gray: #636E72;
    --text-light: #B2BEC3;
    --white: #FFFFFF;
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-4: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    --gradient-5: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    --shadow-sm: 0 4px 15px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 15px 40px rgba(0, 0, 0, 0.15);
    --radius: 12px;
    --radius-lg: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

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

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-dark);
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--gradient-1);
    color: white;
    font-weight: bold;
    font-size: 16px;
    border-radius: 10px;
}

.logo-text {
    font-size: 20px;
    font-weight: bold;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
}

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

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-1);
    transition: var(--transition);
}

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

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

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    border-radius: 3px;
    transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 6px);
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -6px);
}

.hero {
    min-height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 100px 20px 50px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #0F1020 0%, #1a1a3e 50%, #2d1b69 100%);
}

.gradient-overlay {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(108, 92, 231, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(0, 206, 201, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(253, 121, 168, 0.2) 0%, transparent 50%);
}

.particles {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.particle {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--white);
    max-width: 800px;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
}

.title-line {
    display: block;
}

.title-line.highlight {
    background: var(--gradient-3);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 15px;
}

.hero-desc {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 40px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 15px 40px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-1);
    color: white;
    box-shadow: 0 4px 20px rgba(108, 92, 231, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(108, 92, 231, 0.5);
}

.btn-outline {
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
    background: transparent;
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-3px);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.5);
    font-size: 12px;
    text-align: center;
}

.mouse {
    width: 25px;
    height: 40px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 15px;
    margin: 0 auto 10px;
    position: relative;
}

.wheel {
    width: 3px;
    height: 8px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 3px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

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

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

.section-tag {
    display: inline-block;
    padding: 6px 20px;
    background: rgba(108, 92, 231, 0.1);
    color: var(--primary);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 15px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 800;
    margin-bottom: 15px;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-desc {
    font-size: 1.1rem;
    color: var(--text-gray);
    max-width: 600px;
    margin: 0 auto;
}

.about {
    padding: 100px 0;
    background: var(--bg-light);
}

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

.about-content h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.about-content p {
    color: var(--text-gray);
    margin-bottom: 15px;
    line-height: 1.8;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 30px;
}

.feature-item {
    display: flex;
    gap: 15px;
    padding: 20px;
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.feature-icon {
    font-size: 28px;
    flex-shrink: 0;
}

.feature-item h4 {
    font-size: 1rem;
    margin-bottom: 5px;
}

.feature-item p {
    font-size: 0.9rem;
    margin: 0;
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.stat-card {
    background: white;
    padding: 40px 30px;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.stat-card:nth-child(1) {
    border-top: 4px solid #6C5CE7;
}

.stat-card:nth-child(2) {
    border-top: 4px solid #00CEC9;
}

.stat-card:nth-child(3) {
    border-top: 4px solid #FD79A8;
}

.stat-card:nth-child(4) {
    border-top: 4px solid #FDCB6E;
}

.stat-card:hover {
    transform: translateY(-10px);
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--text-gray);
    font-size: 1rem;
    font-weight: 500;
}

.services {
    padding: 100px 0;
    background: white;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 30px;
}

.service-card {
    background: white;
    padding: 40px 30px;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-1);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

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

.service-icon {
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 20px;
    margin-bottom: 25px;
    transition: var(--transition);
}

.service-icon svg {
    width: 35px;
    height: 35px;
}

.ai-icon {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.java-icon {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
}

.miniapp-icon {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: white;
}

.website-icon {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    color: white;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.service-card > p {
    color: var(--text-gray);
    margin-bottom: 20px;
    line-height: 1.6;
}

.service-features {
    list-style: none;
    margin-bottom: 25px;
}

.service-features li {
    padding: 8px 0;
    color: var(--text-gray);
    display: flex;
    align-items: center;
    gap: 10px;
}

.service-features li::before {
    content: '✓';
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    background: rgba(108, 92, 231, 0.1);
    color: var(--primary);
    border-radius: 50%;
    font-size: 12px;
    font-weight: bold;
}

.service-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.service-link:hover {
    color: var(--primary-dark);
    gap: 5px;
}

.demos {
    padding: 100px 0;
    background: var(--bg-light);
}

.demo-section {
    margin-bottom: 80px;
}

.demo-header {
    text-align: center;
    margin-bottom: 40px;
}

.demo-badge {
    width: 70px;
    height: 70px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    background: var(--gradient-1);
}

.demo-badge.java {
    background: var(--gradient-2);
}

.demo-badge.miniapp {
    background: var(--gradient-3);
}

.demo-badge.website {
    background: var(--gradient-4);
}

.badge-icon {
    font-size: 30px;
}

.demo-header h3 {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.demo-desc {
    color: var(--text-gray);
    max-width: 600px;
    margin: 0 auto;
}

.demo-container {
    max-width: 900px;
    margin: 0 auto;
}

.chat-demo {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.chat-header {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background: var(--gradient-1);
    color: white;
}

.chat-avatar {
    width: 45px;
    height: 45px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

.chat-info h4 {
    font-size: 1rem;
}

.online-status {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.8rem;
    opacity: 0.9;
}

.online-status .dot {
    width: 8px;
    height: 8px;
    background: #00FF00;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.chat-messages {
    padding: 20px;
    min-height: 250px;
    max-height: 350px;
    overflow-y: auto;
    background: #f8f9fa;
}

.message {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.ai-message {
    flex-direction: row;
}

.message-avatar {
    width: 35px;
    height: 35px;
    background: var(--gradient-1);
    color: white;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: bold;
    flex-shrink: 0;
}

.message-content {
    background: white;
    padding: 15px 20px;
    border-radius: 5px 15px 15px 15px;
    box-shadow: var(--shadow-sm);
    max-width: 80%;
}

.message-content p {
    margin-bottom: 8px;
}

.message-content p:last-child {
    margin-bottom: 0;
}

.message-content ul {
    padding-left: 0;
    margin: 10px 0;
    list-style: none;
}

.message-content ul li {
    padding: 5px 0;
}

.user-message {
    flex-direction: row-reverse;
}

.user-message .message-content {
    background: var(--primary);
    color: white;
    border-radius: 15px 5px 15px 15px;
}

.chat-input-area {
    display: flex;
    gap: 10px;
    padding: 20px;
    background: white;
    border-top: 1px solid #eee;
}

.chat-input {
    flex: 1;
    padding: 12px 20px;
    border: 2px solid #eee;
    border-radius: 50px;
    outline: none;
    transition: var(--transition);
    font-size: 1rem;
}

.chat-input:focus {
    border-color: var(--primary);
}

.chat-send {
    width: 45px;
    height: 45px;
    background: var(--gradient-1);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.chat-send:hover {
    transform: scale(1.1);
}

.chat-send svg {
    width: 20px;
    height: 20px;
}

.quick-questions {
    display: flex;
    gap: 10px;
    padding: 0 20px 20px;
    flex-wrap: wrap;
    align-items: center;
}

.quick-label {
    font-size: 0.9rem;
    color: var(--text-gray);
}

.quick-btn {
    padding: 8px 16px;
    background: rgba(108, 92, 231, 0.1);
    color: var(--primary);
    border: none;
    border-radius: 50px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
}

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

.java-demo {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.java-header {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px 30px;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
}

.java-logo {
    font-size: 28px;
}

.java-header span {
    font-size: 1.2rem;
    font-weight: 600;
}

.java-body {
    padding: 30px;
}

.java-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.java-stat {
    background: #f8f9fa;
    padding: 25px;
    border-radius: var(--radius);
    text-align: center;
}

.stat-val {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 5px;
}

.stat-key {
    color: var(--text-gray);
    font-size: 0.9rem;
}

.java-table {
    border: 1px solid #eee;
    border-radius: var(--radius);
    overflow: hidden;
}

.table-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background: #f8f9fa;
    border-bottom: 1px solid #eee;
    font-weight: 600;
}

.table-btn {
    padding: 8px 16px;
    background: var(--gradient-1);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
}

.java-table table {
    width: 100%;
    border-collapse: collapse;
}

.java-table th {
    padding: 15px 20px;
    text-align: left;
    background: #f8f9fa;
    color: var(--text-gray);
    font-weight: 600;
    font-size: 0.9rem;
}

.java-table td {
    padding: 15px 20px;
    border-bottom: 1px solid #eee;
}

.java-table tr:last-child td {
    border-bottom: none;
}

.java-table tbody tr:hover {
    background: rgba(108, 92, 231, 0.05);
}

.status {
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 500;
}

.status.success {
    background: rgba(67, 233, 123, 0.15);
    color: #43e97b;
}

.status.pending {
    background: rgba(79, 172, 254, 0.15);
    color: #4facfe;
}

.status.processing {
    background: rgba(253, 203, 110, 0.15);
    color: #FDCB6E;
}

.phone-frame {
    width: 320px;
    height: 640px;
    background: var(--text-dark);
    border-radius: 40px;
    padding: 10px;
    margin: 0 auto;
    box-shadow: var(--shadow-lg);
    position: relative;
}

.phone-notch {
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 25px;
    background: var(--text-dark);
    border-radius: 20px 20px 0 0;
    z-index: 10;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: white;
    border-radius: 32px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.mini-header {
    padding: 45px 20px 15px;
    text-align: center;
    font-weight: 600;
    font-size: 1.1rem;
    background: white;
}

.mini-banner {
    margin: 0 15px 15px;
    padding: 25px;
    background: var(--gradient-3);
    border-radius: var(--radius);
    color: white;
}

.banner-text h4 {
    font-size: 1.2rem;
    margin-bottom: 5px;
}

.banner-text p {
    opacity: 0.9;
}

.mini-categories {
    display: flex;
    justify-content: space-around;
    padding: 15px;
    background: white;
}

.mini-cat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    cursor: pointer;
}

.cat-icon {
    font-size: 1.5rem;
}

.mini-products {
    flex: 1;
    overflow-y: auto;
    padding: 15px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    background: #f8f9fa;
}

.mini-product {
    background: white;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.product-img {
    width: 100%;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

.gradient-1 {
    background: var(--gradient-1);
}

.gradient-2 {
    background: var(--gradient-2);
}

.gradient-3 {
    background: var(--gradient-3);
}

.gradient-4 {
    background: var(--gradient-4);
}

.product-info {
    padding: 10px;
}

.product-info h5 {
    font-size: 0.9rem;
    margin-bottom: 5px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.price {
    color: #f5576c;
    font-weight: 700;
    font-size: 1rem;
    margin-bottom: 3px;
}

.sold {
    font-size: 0.75rem;
    color: var(--text-light);
}

.mini-tabbar {
    display: flex;
    justify-content: space-around;
    padding: 10px;
    background: white;
    border-top: 1px solid #eee;
}

.tab-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    font-size: 0.75rem;
    color: var(--text-gray);
    cursor: pointer;
}

.tab-item span:first-child {
    font-size: 1.2rem;
}

.tab-item.active {
    color: var(--primary);
}

.website-demo {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.website-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    background: white;
    border-bottom: 1px solid #eee;
}

.web-logo {
    font-weight: 800;
    font-size: 1.2rem;
    color: var(--primary);
}

.web-nav {
    display: flex;
    gap: 30px;
}

.web-nav span {
    color: var(--text-gray);
    cursor: pointer;
    transition: var(--transition);
}

.web-nav span:hover {
    color: var(--primary);
}

.website-banner {
    padding: 60px 30px;
    background: var(--gradient-4);
    color: white;
    text-align: center;
}

.banner-content h4 {
    font-size: 2rem;
    margin-bottom: 10px;
}

.banner-content p {
    margin-bottom: 20px;
    opacity: 0.9;
}

.web-btn {
    padding: 12px 30px;
    background: white;
    color: #43e97b;
    border: none;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.web-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.website-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    padding: 40px 30px;
    background: #f8f9fa;
}

.web-feature {
    text-align: center;
}

.web-feature-icon {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.web-feature h5 {
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.web-feature p {
    color: var(--text-gray);
    font-size: 0.9rem;
}

.website-form {
    padding: 40px 30px;
    background: white;
}

.website-form h5 {
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.website-form input,
.website-form textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 8px;
    margin-bottom: 15px;
    outline: none;
    transition: var(--transition);
    font-family: inherit;
}

.website-form input:focus,
.website-form textarea:focus {
    border-color: var(--primary);
}

.web-btn-primary {
    padding: 12px 30px;
    background: var(--gradient-1);
    color: white;
    border: none;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.web-btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.contact {
    padding: 100px 0;
    background: white;
}

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

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-1);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon svg {
    width: 25px;
    height: 25px;
    color: white;
}

.contact-item h4 {
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.contact-item p {
    color: var(--text-gray);
}

.contact-form {
    background: var(--bg-light);
    padding: 40px;
    border-radius: var(--radius-lg);
}

.contact-form h3 {
    font-size: 1.5rem;
    margin-bottom: 25px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid #eee;
    border-radius: var(--radius);
    outline: none;
    transition: var(--transition);
    font-family: inherit;
    font-size: 1rem;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary);
}

.submit-btn {
    width: 100%;
    padding: 16px;
    background: var(--gradient-1);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.footer {
    background: var(--bg-dark);
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
    font-size: 1.3rem;
    font-weight: bold;
}

.footer-logo .logo-icon {
    background: var(--gradient-1);
}

.footer-left p {
    color: rgba(255, 255, 255, 0.6);
}

.footer h4 {
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.footer ul {
    list-style: none;
}

.footer ul li {
    margin-bottom: 10px;
}

.footer a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: var(--transition);
}

.footer a:hover {
    color: white;
}

.footer-contact p {
    margin-bottom: 10px;
    color: rgba(255, 255, 255, 0.6);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.4);
}

@media (max-width: 992px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }

    .website-features {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 30px;
        gap: 20px;
        transform: translateY(-100%);
        transition: var(--transition);
        box-shadow: var(--shadow-md);
    }

    .nav-menu.active {
        transform: translateY(0);
    }

    .hero {
        padding-top: 120px;
    }

    .about-features {
        grid-template-columns: 1fr;
    }

    .about-stats {
        grid-template-columns: 1fr 1fr;
    }

    .java-stats {
        grid-template-columns: 1fr;
    }

    .java-table {
        overflow-x: auto;
    }

    .java-table table {
        min-width: 500px;
    }

    .website-features {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .phone-frame {
        width: 280px;
        height: 560px;
    }

    .mini-products {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .about-content h3,
    .demo-header h3 {
        font-size: 1.4rem;
    }

    .stat-card {
        padding: 30px 20px;
    }

    .stat-number {
        font-size: 2.5rem;
    }

    .java-stats {
        grid-template-columns: 1fr;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
        padding: 0 20px;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    .phone-frame {
        width: 260px;
        height: 520px;
    }

    .contact-form {
        padding: 25px;
    }
}