:root {
    --primary: #FF4757;
    --primary-dark: #FF6B81;
    --bg: #1E1E2E;
    --card-bg: #28293D;
    --text: #F1F2F6;
    --text-muted: #A4B0BE;
    --border: #3F4152;
}

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

body {
    font-family: 'Inter', 'Noto Sans SC', sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    background: rgba(30, 30, 46, 0.9);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--primary);
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a:not(.btn-secondary) {
    color: var(--text-muted);
    transition: color 0.3s;
}

.nav-links a:not(.btn-secondary):hover {
    color: var(--text);
}

/* Buttons */
.btn-primary {
    background-color: var(--primary);
    color: white;
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    transition: transform 0.2s, box-shadow 0.2s;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255, 71, 87, 0.4);
}

.btn-secondary {
    background-color: var(--card-bg);
    color: var(--text);
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    border: 1px solid var(--border);
    transition: background 0.2s;
}

.btn-secondary:hover {
    background-color: #32344a;
}

.btn-text {
    color: var(--text-muted);
    font-weight: 600;
}

.btn-text:hover {
    color: var(--text);
}

/* Hero */
.hero {
    text-align: center;
    padding: 8rem 2rem;
    background: radial-gradient(circle at center, #2d2e42 0%, #1e1e2e 70%);
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.highlight {
    color: var(--primary);
    background: linear-gradient(120deg, rgba(255, 71, 87, 0.2) 0%, rgba(255, 71, 87, 0) 100%);
}

.subtitle {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 3rem;
}

.cta-group {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    align-items: center;
}

/* Features */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    padding: 5rem 10%;
}

.feature-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid var(--border);
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}

.feature-card p {
    color: var(--text-muted);
}

/* Pricing */
.pricing {
    padding: 5rem 10%;
    text-align: center;
}

.pricing h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.pricing-grid {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.plan-card {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 16px;
    border: 1px solid var(--border);
    width: 350px;
    text-align: left;
    position: relative;
}

.plan-card.featured {
    border-color: var(--primary);
    box-shadow: 0 0 30px rgba(255, 71, 87, 0.1);
}

.tag {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
}

.plan-header {
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 1.5rem;
}

.price {
    font-size: 2.5rem;
    font-weight: 800;
    margin-top: 0.5rem;
}

.period {
    font-size: 1rem;
    color: var(--text-muted);
    font-weight: 400;
}

.features-list {
    list-style: none;
    margin-bottom: 2.5rem;
}

.features-list li {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.full-width {
    width: 100%;
}

.guarantee {
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 1rem;
}

/* Footer */
.footer {
    background: #161622;
    padding: 4rem 10% 2rem;
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-col h4 {
    margin-bottom: 1.5rem;
    color: var(--text);
}

.footer-col a {
    display: block;
    color: var(--text-muted);
    margin-bottom: 0.8rem;
    font-size: 0.9rem;
}

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

.copyright {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.8rem;
    border-top: 1px solid var(--border);
    padding-top: 2rem;
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .navbar {
        flex-direction: column;
        gap: 1rem;
    }
}