:root {
    --bg: #f8fafc;
    --text: #1e293b;
    --muted: #64748b;
    --primary: #2563eb;
    --secondary: #0ea5e9;
    --accent: #8b5cf6;
    --card: #ffffff;
    --border: #e2e8f0;
}
.dark {
    --bg: #0f172a;
    --text: #e2e8f0;
    --muted: #94a3b8;
    --card: #1e293b;
    --border: #334155;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: 'Poppins', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    transition: background 0.3s, color 0.3s;
}
.hero {
    background: linear-gradient(135deg, #1e3a5f 0%, #2563eb 50%, #0ea5e9 100%);
    color: white;
    padding: 100px 20px 80px;
    text-align: center;
}
.hero h1 { font-size: clamp(28px, 5vw, 48px); margin-bottom: 15px; }
.hero p { font-size: 18px; opacity: 0.9; max-width: 700px; margin: 0 auto; }
nav {
    background: var(--card);
    padding: 14px 20px;
    display: flex;
    justify-content: center;
    gap: 20px;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 10;
    flex-wrap: wrap;
}
nav a {
    text-decoration: none;
    color: var(--muted);
    font-weight: 500;
    font-size: 14px;
    transition: color 0.2s;
}
nav a:hover { color: var(--primary); }
.container { max-width: 1000px; margin: auto; padding: 40px 20px; }
section { margin-bottom: 60px; }
h2 { font-size: 28px; margin-bottom: 25px; color: var(--text); }
h3 { font-size: 20px; margin-bottom: 10px; color: var(--primary); }
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 28px;
    margin-bottom: 20px;
    transition: transform 0.2s;
}
.card:hover { transform: translateY(-3px); }
.card p { color: var(--muted); margin-bottom: 10px; }
.grid { display: grid; gap: 20px; }
@media(min-width: 768px) { .grid { grid-template-columns: repeat(2, 1fr); } }
@media(min-width: 1024px) { .grid.three { grid-template-columns: repeat(3, 1fr); } }
.section-image {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 16px;
    margin-bottom: 25px;
}
.ads {
    background: var(--card);
    border: 1px dashed var(--border);
    border-radius: 12px;
    padding: 20px;
    margin: 30px 0;
    text-align: center;
    min-height: 100px;
}
.toggle-btn {
    position: fixed;
    top: 15px;
    right: 15px;
    z-index: 100;
    background: var(--primary);
    color: white;
    border: none;
    padding: 10px 18px;
    border-radius: 10px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}
th, td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}
th { background: var(--primary); color: white; font-weight: 600; }
tr:hover { background: rgba(37, 99, 235, 0.05); }
.faq details {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 18px;
    margin-bottom: 12px;
}
.faq summary {
    font-weight: 600;
    cursor: pointer;
    color: var(--text);
}
.faq details p { margin-top: 10px; color: var(--muted); }
.contact-form {
    display: grid;
    gap: 15px;
    max-width: 500px;
}
.contact-form input, .contact-form textarea {
    padding: 14px;
    border: 1px solid var(--border);
    border-radius: 10px;
    font-size: 15px;
    background: var(--bg);
    color: var(--text);
}
.contact-form button {
    background: var(--primary);
    color: white;
    border: none;
    padding: 14px;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
}
footer {
    background: #0f172a;
    color: #94a3b8;
    text-align: center;
    padding: 30px 20px;
    font-size: 14px;
}