:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --dark: #0f172a;
    --text: #334155;
    --muted: #64748b;
    --light: #f8fafc;
    --border: #e2e8f0;
    --white: #ffffff;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    color: var(--text);
    background: var(--white);
    line-height: 1.6;
}

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

.container {
    width: min(1120px, 92%);
    margin: auto;
}

.site-header {
    background: var(--dark);
    color: var(--white);
    padding: 18px 0;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    font-size: 24px;
    font-weight: 800;
    letter-spacing: 1px;
}

nav {
    display: flex;
    gap: 22px;
    align-items: center;
}

nav a {
    color: #e2e8f0;
    font-size: 15px;
}

.hero {
    background: linear-gradient(135deg, #0f172a, #1e293b);
    color: var(--white);
    padding: 90px 0;
}

.hero-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 50px;
    align-items: center;
}

.hero h1 {
    font-size: clamp(36px, 5vw, 58px);
    line-height: 1.1;
    margin: 15px 0;
}

.hero p {
    font-size: 18px;
    color: #cbd5e1;
}

.badge {
    display: inline-block;
    background: #dbeafe;
    color: #1e40af;
    padding: 6px 12px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 700;
}

.hero-actions {
    display: flex;
    gap: 15px;
    margin-top: 30px;
    flex-wrap: wrap;
}

.btn-primary,
.btn-secondary,
.btn-small {
    display: inline-block;
    border-radius: 8px;
    font-weight: 700;
    transition: 0.2s ease;
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
    padding: 14px 24px;
    border: none;
    cursor: pointer;
}

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

.btn-secondary {
    border: 1px solid #94a3b8;
    color: var(--white);
    padding: 14px 24px;
}

.btn-small {
    background: var(--primary);
    color: var(--white);
    padding: 9px 15px;
}

.hero-card {
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 16px;
    padding: 30px;
}

.hero-card h3 {
    margin-top: 0;
}

.hero-card li {
    margin-bottom: 10px;
}

.section {
    padding: 75px 0;
}

.bg-light {
    background: var(--light);
}

.section h1,
.section h2 {
    color: var(--dark);
}

.section h2 {
    font-size: 36px;
    margin-bottom: 15px;
}

.section-intro {
    max-width: 720px;
    color: var(--muted);
    margin-bottom: 35px;
}

.grid-3,
.grid-2 {
    display: grid;
    gap: 24px;
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.card,
.feature,
.contact-form,
.contact-box {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 26px;
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.05);
}

.card h3,
.feature h3 {
    color: var(--dark);
    margin-top: 0;
}

.cta {
    background: var(--dark);
    color: var(--white);
    text-align: center;
    padding: 70px 0;
}

.cta h2 {
    font-size: 34px;
    margin-top: 0;
}

.cta p {
    color: #cbd5e1;
}

.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 50px;
    align-items: start;
}

.contact-form label {
    display: block;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--dark);
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 13px;
    border: 1px solid var(--border);
    border-radius: 8px;
    margin-bottom: 16px;
    font-size: 15px;
}

.contact-form textarea {
    resize: vertical;
}

.error {
    color: #dc2626;
    font-size: 14px;
    margin-top: -10px;
    margin-bottom: 14px;
}

.alert {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.thank-you {
    max-width: 720px;
    text-align: center;
}

.site-footer {
    background: var(--dark);
    color: #cbd5e1;
    text-align: center;
    padding: 24px 0;
}

@media (max-width: 800px) {
    .hero-content,
    .grid-3,
    .grid-2,
    .contact-layout {
        grid-template-columns: 1fr;
    }

    .nav {
        flex-direction: column;
        gap: 18px;
    }

    nav {
        flex-wrap: wrap;
        justify-content: center;
    }
}