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

:root {
    --primary-color: #3b82f6;
    --primary-dark: #1e40af;
    --primary-light: #dbeafe;
    --secondary-color: #8b5cf6;
    --text-dark: #0f172a;
    --text-gray: #475569;
    --text-light: #94a3b8;
    --bg-light: #f8fafc;
    --bg-lighter: #f1f5f9;
    --white: #ffffff;
    --border: #e2e8f0;
    --success: #10b981;
}

body {
    font-family: 'Segoe UI', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
}

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

header {
    background: var(--white);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
}

.logo {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 10px;
    letter-spacing: -0.5px;
}

.logo svg {
    width: 24px;
    height: 24px;
    stroke-width: 2.5;
}

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

.nav-links a {
    text-decoration: none;
    color: var(--text-gray);
    font-weight: 500;
    font-size: 15px;
    transition: color 0.3s ease;
    position: relative;
}

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

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

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

.hero {
    position: relative;
    overflow: hidden;
    padding: 120px 20px;
    text-align: center;
    color: var(--white);
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 50%, #06b6d4 100%);
    z-index: 0;
}

.hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
}

.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 56px;
    font-weight: 800;
    margin-bottom: 20px;
    letter-spacing: -1px;
    line-height: 1.2;
}

.subtitle {
    font-size: 18px;
    margin-bottom: 40px;
    opacity: 0.95;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 14px 32px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: 2px solid transparent;
    font-size: 16px;
    cursor: pointer;
}

.btn-primary {
    background: var(--white);
    color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(255, 255, 255, 0.2);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(255, 255, 255, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border-color: var(--white);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
}

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

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

section {
    padding: 100px 20px;
}

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

h2 {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--text-dark);
    letter-spacing: -1px;
}

.section-header p {
    font-size: 16px;
    color: var(--text-light);
    max-width: 500px;
    margin: 0 auto;
}

.features {
    background: linear-gradient(180deg, var(--bg-light) 0%, var(--white) 100%);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.feature-card {
    background: var(--white);
    padding: 40px 32px;
    border-radius: 16px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    border: 2px solid var(--border);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.1);
    border-color: var(--primary-light);
}

.card-icon {
    font-size: 52px;
    margin-bottom: 24px;
    display: inline-block;
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.6;
    font-size: 15px;
}

.pricing {
    background: linear-gradient(180deg, var(--white) 0%, var(--bg-light) 100%);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
    max-width: 1100px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--white);
    border: 2px solid var(--border);
    border-radius: 16px;
    padding: 48px 40px;
    text-align: center;
    position: relative;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 50px rgba(59, 130, 246, 0.15);
}

.pricing-card.featured {
    border-color: var(--primary-color);
    border-width: 2px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.05) 0%, var(--white) 100%);
}

.pricing-card.featured:hover {
    box-shadow: 0 30px 60px rgba(59, 130, 246, 0.2);
}

.badge {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 8px 24px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.pricing-card h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.plan-desc {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 24px;
}

.price {
    font-size: 52px;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.price span {
    font-size: 16px;
    color: var(--text-light);
    font-weight: 500;
}

.features-list {
    list-style: none;
    margin-bottom: 32px;
    text-align: left;
}

.features-list li {
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
    color: var(--text-gray);
    font-size: 15px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.features-list li:last-child {
    border-bottom: none;
}

.check {
    color: var(--primary-color);
    font-weight: 700;
}

.contact {
    background: linear-gradient(180deg, var(--bg-light) 0%, var(--white) 100%);
}

.contact-form {
    max-width: 650px;
    margin: 0 auto;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 24px;
}

.form-group {
    width: 100%;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid var(--border);
    border-radius: 10px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: var(--white);
    color: var(--text-dark);
    font-family: inherit;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: var(--text-light);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.contact-form textarea {
    margin-bottom: 24px;
    resize: vertical;
}

.contact-form button {
    width: 100%;
    cursor: pointer;
    font-size: 16px;
}

footer {
    background: linear-gradient(135deg, var(--text-dark) 0%, #0f2f5f 100%);
    color: var(--white);
    text-align: center;
    padding: 40px 20px;
}

.footer-content {
    opacity: 0.9;
}

@media (max-width: 768px) {
    section {
        padding: 60px 20px;
    }

    .hero {
        padding: 80px 20px;
    }

    .hero h1 {
        font-size: 40px;
        font-weight: 800;
    }

    .subtitle {
        font-size: 16px;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: stretch;
    }

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

    .nav-links {
        gap: 20px;
        font-size: 14px;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    h2 {
        font-size: 32px;
    }

    .section-header p {
        font-size: 15px;
    }

    .pricing-grid,
    .feature-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .pricing-card,
    .feature-card {
        padding: 32px 24px;
    }
}