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

body {
    font-family: Arial, Helvetica, sans-serif;
    background: #f7f8fc;
    color: #1f2937;
    line-height: 1.6;
}

a {
    text-decoration: none;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

.site-header {
    background: #ffffff;
    border-bottom: 1px solid #e5e7eb;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 0;
}

.logo a {
    font-size: 24px;
    font-weight: 700;
    color: #111827;
}

.header-actions {
    display: flex;
    align-items: center;
}

.btn {
    display: inline-block;
    padding: 10px 18px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    transition: 0.2s ease;
}

.btn-admin {
    background: #111827;
    color: #ffffff;
}

.btn-admin:hover {
    background: #000000;
}

.btn-primary {
    background: #2563eb;
    color: #ffffff;
}

.btn-primary:hover {
    background: #1d4ed8;
}

.btn-outline {
    border: 1px solid #cbd5e1;
    color: #111827;
    background: #ffffff;
}

.btn-outline:hover {
    background: #f1f5f9;
}

.hero {
    padding: 100px 0 80px;
    background: linear-gradient(to right, #eff6ff, #ffffff);
    text-align: center;
}

.hero-content h1 {
    font-size: 42px;
    margin-bottom: 16px;
    color: #0f172a;
}

.hero-content p {
    font-size: 18px;
    color: #475569;
    max-width: 720px;
    margin: 0 auto 30px;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.features {
    padding: 70px 0;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}

.feature-card {
    background: #ffffff;
    padding: 24px;
    border-radius: 14px;
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}

.feature-card h3 {
    margin-bottom: 10px;
    font-size: 20px;
    color: #111827;
}

.feature-card p {
    color: #64748b;
}

.site-footer {
    padding: 24px 0;
    text-align: center;
    background: #111827;
    color: #ffffff;
    margin-top: 30px;
}