/* ========== CSS Variables ========== */
:root {
    --primary-color: #1e40af;
    --primary-light: #3b82f6;
    --primary-dark: #1e3a8a;
    --accent-color: #f97316;
    --accent-light: #fb923c;
    --accent-warm: #fed7aa;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --text-dark: #1e293b;
    --text-medium: #475569;
    --text-light: #64748b;
    --border-light: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ========== Reset & Base ========== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* ========== Utility Classes ========== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 100px 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.section-subtitle {
    font-size: 1.125rem;
    text-align: center;
    color: var(--text-light);
    margin-bottom: 60px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ========== Icons (CSS-based) ========== */
.icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1em;
    height: 1em;
}

.icon::before {
    font-family: inherit;
    font-weight: normal;
    font-style: normal;
}

/* ========== Navigation ========== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-md);
    padding: 12px 0;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
    position: relative;
    overflow: hidden;
}

.logo-icon::after {
    content: '~';
    font-size: 1.5rem;
    font-weight: bold;
    font-family: Arial, sans-serif;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-link {
    font-weight: 500;
    color: var(--text-medium);
    position: relative;
    padding: 8px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transition: width var(--transition-normal);
}

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

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

.nav-cta {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    padding: 12px 24px;
    border-radius: var(--radius-lg);
    font-weight: 500;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: white;
}

/* Mobile Menu */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;
}

.menu-toggle span {
    display: block;
    width: 28px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
    transition: all var(--transition-normal);
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 7px);
}

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

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -7px);
}

/* ========== Hero Section ========== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #eff6ff 0%, #fff7ed 50%, #fef3c7 100%);
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.5;
    animation: float 20s ease-in-out infinite;
}

.hero-shape:nth-child(1) {
    width: 600px;
    height: 600px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    top: -200px;
    right: -100px;
    animation-delay: 0s;
}

.hero-shape:nth-child(2) {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-light));
    bottom: -100px;
    left: -100px;
    animation-delay: -5s;
}

.hero-shape:nth-child(3) {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--accent-warm), var(--accent-light));
    top: 50%;
    left: 50%;
    animation-delay: -10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(30px, -30px) rotate(5deg); }
    50% { transform: translate(0, -50px) rotate(0deg); }
    75% { transform: translate(-30px, -30px) rotate(-5deg); }
}

.hero-content {
    position: relative;
    z-index: 10;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.hero-text {
    animation: fadeInUp 1s ease forwards;
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: white;
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--primary-color);
    box-shadow: var(--shadow-md);
    margin-bottom: 24px;
}

.hero-badge-icon {
    width: 16px;
    height: 16px;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-light));
    border-radius: 50%;
    position: relative;
}

.hero-badge-icon::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 6px;
    height: 6px;
    background: white;
    border-radius: 50%;
    transform: translate(-50%, -50%);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
    color: var(--text-dark);
}

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

.hero-description {
    font-size: 1.25rem;
    color: var(--text-medium);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 32px;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1rem;
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
    color: white;
}

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

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

.hero-visual {
    position: relative;
    animation: fadeInUp 1s ease 0.3s forwards;
    opacity: 0;
}

.hero-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: 40px;
    box-shadow: var(--shadow-xl);
    position: relative;
}

.hero-card::before {
    content: '';
    position: absolute;
    inset: -3px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: var(--radius-xl);
    z-index: -1;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.stat-item {
    text-align: center;
    padding: 20px;
    background: var(--bg-light);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
}

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

.stat-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    color: white;
    font-size: 1.5rem;
    position: relative;
}

.stat-icon.ai::after { content: 'AI'; font-weight: bold; font-size: 1rem; }
.stat-icon.iot::after { content: 'IoT'; font-weight: bold; font-size: 0.9rem; }
.stat-icon.app::after { content: 'APP'; font-weight: bold; font-size: 0.9rem; }
.stat-icon.edge::after { content: 'Edge'; font-weight: bold; font-size: 0.8rem; }

.stat-item:nth-child(2) .stat-icon {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-light));
}

.stat-item:nth-child(3) .stat-icon {
    background: linear-gradient(135deg, #10b981, #34d399);
}

.stat-item:nth-child(4) .stat-icon {
    background: linear-gradient(135deg, #8b5cf6, #a78bfa);
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-dark);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-light);
    margin-top: 4px;
}

/* ========== Services Section ========== */
.services {
    background: var(--bg-white);
    position: relative;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.service-card {
    background: var(--bg-light);
    border-radius: var(--radius-xl);
    padding: 40px 32px;
    text-align: center;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

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

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

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

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    color: white;
    font-size: 2rem;
    transition: all var(--transition-normal);
    position: relative;
}

/* Service icon symbols */
.service-icon::after {
    font-weight: bold;
    font-size: 1.2rem;
}

.service-card:nth-child(1) .service-icon::after { content: 'AI'; }
.service-card:nth-child(2) .service-icon::after { content: 'IoT'; }
.service-card:nth-child(3) .service-icon::after { content: 'APP'; }
.service-card:nth-child(4) .service-icon::after { content: 'Web'; }

.service-card:nth-child(2) .service-icon {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-light));
}

.service-card:nth-child(3) .service-icon {
    background: linear-gradient(135deg, #10b981, #34d399);
}

.service-card:nth-child(4) .service-icon {
    background: linear-gradient(135deg, #8b5cf6, #a78bfa);
}

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

.service-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.service-description {
    font-size: 0.9375rem;
    color: var(--text-light);
    line-height: 1.7;
}

/* ========== About Section ========== */
.about {
    background: linear-gradient(180deg, var(--bg-light) 0%, var(--bg-white) 100%);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-visual {
    position: relative;
}

.about-image {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: var(--radius-xl);
    padding: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    position: relative;
    overflow: hidden;
}

.about-image::before {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.1'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.about-icon {
    font-size: 8rem;
    color: white;
    position: relative;
    z-index: 1;
    opacity: 0.9;
}

.about-icon::after {
    content: '</>';
    font-family: Consolas, Monaco, 'Courier New', monospace;
    font-weight: bold;
    font-style: normal;
}

.about-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-lg);
    position: absolute;
    bottom: -30px;
    right: -30px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.about-card-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-light));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    position: relative;
}

.about-card-icon::after {
    content: '♥';
    font-size: 1.5rem;
}

.about-card-text {
    font-weight: 600;
    color: var(--text-dark);
}

.about-card-text span {
    display: block;
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--text-light);
}

.about-text h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--text-dark);
}

.about-text h2 span {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-text p {
    font-size: 1.125rem;
    color: var(--text-medium);
    margin-bottom: 32px;
    line-height: 1.8;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.about-feature {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px;
    background: var(--bg-light);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
}

.about-feature:hover {
    background: white;
    box-shadow: var(--shadow-md);
    transform: translateX(5px);
}

.about-feature-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
    flex-shrink: 0;
    position: relative;
}

.about-feature:nth-child(1) .about-feature-icon::after { content: '💡'; font-size: 1.2rem; }
.about-feature:nth-child(2) .about-feature-icon::after { content: '🤝'; font-size: 1.2rem; }
.about-feature:nth-child(3) .about-feature-icon::after { content: '👥'; font-size: 1.2rem; }
.about-feature:nth-child(4) .about-feature-icon::after { content: '🛡️'; font-size: 1.2rem; }

.about-feature:nth-child(2) .about-feature-icon {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-light));
}

.about-feature:nth-child(3) .about-feature-icon {
    background: linear-gradient(135deg, #10b981, #34d399);
}

.about-feature:nth-child(4) .about-feature-icon {
    background: linear-gradient(135deg, #8b5cf6, #a78bfa);
}

.about-feature h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 4px;
}

.about-feature p {
    font-size: 0.875rem;
    color: var(--text-light);
    margin: 0;
    line-height: 1.5;
}

/* ========== Contact Section ========== */
.contact {
    background: var(--bg-white);
    position: relative;
    overflow: hidden;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(135deg, #eff6ff 0%, #fff7ed 100%);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    position: relative;
    z-index: 1;
}

.contact-info {
    padding: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: var(--radius-xl);
    color: white;
}

.contact-info h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.contact-info p {
    opacity: 0.9;
    margin-bottom: 40px;
    line-height: 1.7;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    transition: all var(--transition-normal);
    backdrop-filter: blur(10px);
}

.contact-item:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateX(10px);
}

.contact-item-icon {
    width: 56px;
    height: 56px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
    position: relative;
}

.contact-item-icon::after {
    font-size: 1.5rem;
}

.contact-item:nth-child(2) .contact-item-icon::after { content: '📞'; }
.contact-item:nth-child(3) .contact-item-icon::after { content: '💬'; }
.contact-item:nth-child(4) .contact-item-icon::after { content: '✉️'; }

.contact-item-text h4 {
    font-size: 0.875rem;
    opacity: 0.8;
    font-weight: 400;
    margin-bottom: 4px;
}

.contact-item-text p,
.contact-item-text a {
    font-size: 1.125rem;
    font-weight: 600;
    color: white;
}

.contact-item-text a:hover {
    text-decoration: underline;
}

.contact-form-wrapper {
    background: white;
    border-radius: var(--radius-xl);
    padding: 60px;
    box-shadow: var(--shadow-xl);
}

.contact-form-wrapper h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 32px;
    color: var(--text-dark);
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-medium);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 16px 20px;
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: inherit;
    transition: all var(--transition-fast);
    background: var(--bg-light);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background: white;
    box-shadow: 0 0 0 4px rgba(30, 64, 175, 0.1);
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.btn-submit {
    width: 100%;
    padding: 18px 32px;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-light));
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    position: relative;
}

.btn-submit::before {
    content: '➤';
    margin-right: 8px;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* ========== Footer ========== */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-brand p {
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 24px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
    position: relative;
}

.footer-social a::after {
    font-size: 1.2rem;
}

.footer-social a:nth-child(1)::after { content: '💬'; }
.footer-social a:nth-child(2)::after { content: '✉️'; }
.footer-social a:nth-child(3)::after { content: '📞'; }

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

.footer-links h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: white;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: var(--text-light);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-bottom p {
    color: var(--text-light);
    font-size: 0.875rem;
}

.footer-icp {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-light);
    font-size: 0.875rem;
}

.footer-icp a {
    color: var(--accent-color);
    font-weight: 500;
    transition: color var(--transition-fast);
}

.footer-icp a:hover {
    color: var(--accent-light);
    text-decoration: underline;
}

/* ========== Responsive Design ========== */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 60px;
        text-align: center;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-visual {
        max-width: 500px;
        margin: 0 auto;
    }

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .about-visual {
        order: -1;
    }

    .about-image {
        min-height: 300px;
    }

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

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

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

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: white;
        flex-direction: column;
        justify-content: center;
        gap: 32px;
        padding: 40px;
        box-shadow: var(--shadow-xl);
        transition: right var(--transition-normal);
    }

    .nav-links.active {
        right: 0;
    }

    .nav-link {
        font-size: 1.25rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-description {
        font-size: 1.125rem;
    }

    .section {
        padding: 60px 0;
    }

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

    .services-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .service-card {
        padding: 32px 24px;
    }

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

    .about-card {
        position: relative;
        bottom: 0;
        right: 0;
        margin-top: 24px;
    }

    .contact-info,
    .contact-form-wrapper {
        padding: 40px 24px;
    }

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

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

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

/* ========== Animations ========== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Mobile menu overlay */
.menu-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 999;
}

.menu-overlay.active {
    opacity: 1;
    visibility: visible;
}