:root {
    --primary: #4F46E5; /* Indigo */
    --primary-hover: #4338CA;
    --dark: #111827;
    --light: #F9FAFB;
    --border: #E5E7EB;
    --text-main: #374151;
    --text-muted: #6B7280;
    --radius: 8px;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--light);
    color: var(--text-main);
    line-height: 1.6;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

a {
    text-decoration: none;
    color: var(--primary);
}

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

/* Header */
.site-header {
    background: #fff;
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
    letter-spacing: -0.5px;
}

.main-nav ul {
    list-style: none;
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.main-nav a {
    color: var(--text-main);
    font-weight: 500;
    transition: color 0.2s;
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    font-weight: 600;
    transition: all 0.2s;
    cursor: pointer;
    text-align: center;
    border: 1px solid transparent;
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1.1rem;
}

.btn-primary {
    background: var(--primary);
    color: #fff !important;
}

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

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

.btn-outline:hover {
    background: var(--primary);
    color: #fff !important;
}

/* Hero Section */
.hero {
    padding: 6rem 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
}

.hero h1 {
    font-size: 3.5rem;
    color: var(--dark);
    line-height: 1.2;
    margin-bottom: 1rem;
    letter-spacing: -1px;
}

.hero .subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto 2rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* Feature Grid */
.features {
    padding: 4rem 0;
}

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

.feature-card {
    background: #fff;
    padding: 2rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.feature-card h3 {
    margin-bottom: 1rem;
    color: var(--dark);
}

/* Footer */
.site-footer {
    text-align: center;
    padding: 2rem 0;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    margin-top: 4rem;
}