:root {
    --bg: #f6f9fc;
    --panel: #ffffff;
    --text: #172033;
    --muted: #667085;
    --line: #e7edf5;
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --success-bg: #ecfdf3;
    --success-text: #166534;
    --danger-bg: #fef2f2;
    --danger-text: #991b1b;
    --shadow: 0 20px 50px rgba(15, 23, 42, 0.08);
    --radius: 18px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top right, rgba(37, 99, 235, 0.12), transparent 28%),
        linear-gradient(180deg, #f8fbff 0%, #ffffff 100%);
}

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

.page-shell { min-height: 100vh; }
.container {
    width: 100%;
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero {
    padding: 64px 0 40px;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 32px;
    align-items: center;
    min-height: 78vh;
}

.badge {
    display: inline-block;
    padding: 10px 14px;
    border-radius: 999px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 18px;
}

.hero h1 {
    margin: 0 0 20px;
    font-size: 56px;
    line-height: 1.06;
    letter-spacing: -0.02em;
}

.hero h1 span { color: var(--primary); display: block; }
.lead {
    font-size: 20px;
    line-height: 1.7;
    color: var(--muted);
    max-width: 720px;
    margin-bottom: 28px;
}

.features-mini {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.mini-card,
.card-box,
.panel {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.mini-card {
    padding: 18px;
}

.mini-card strong {
    display: block;
    margin-bottom: 8px;
    font-size: 17px;
}

.mini-card p,
.card-box p,
.section-header p,
.cta-box p,
.muted,
.form-note {
    color: var(--muted);
    line-height: 1.7;
}

.panel {
    padding: 32px;
}

.panel h2 {
    margin-top: 0;
    margin-bottom: 8px;
    font-size: 30px;
}

.form-group { margin-bottom: 18px; }
label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 700;
}

input {
    width: 100%;
    border: 1px solid #d6dfeb;
    border-radius: 12px;
    min-height: 52px;
    padding: 0 16px;
    font-size: 16px;
    outline: none;
    transition: border-color .2s ease, box-shadow .2s ease;
}

input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

.hidden-field {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 54px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 700;
    padding: 0 22px;
    border: none;
    cursor: pointer;
    transition: transform .15s ease, background .2s ease, color .2s ease;
}

.btn-primary {
    width: 100%;
    background: var(--primary);
    color: #fff;
}

.btn-primary:hover { background: var(--primary-dark); }
.btn-secondary {
    background: transparent;
    color: var(--primary);
    border: 1px solid rgba(37, 99, 235, 0.25);
}

.btn-primary:hover,
.btn-secondary:hover {
    transform: translateY(-1px);
}

.form-note {
    text-align: center;
    margin: 14px 0 0;
    font-size: 14px;
}

.alert {
    border-radius: 12px;
    padding: 14px 16px;
    margin-bottom: 18px;
    border: 1px solid transparent;
}

.alert ul {
    margin: 0;
    padding-left: 18px;
}

.alert-success {
    background: var(--success-bg);
    color: var(--success-text);
    border-color: #c7f0d7;
}

.alert-danger {
    background: var(--danger-bg);
    color: var(--danger-text);
    border-color: #f4caca;
}

.section {
    padding: 42px 0 72px;
}

.section-header {
    max-width: 880px;
    text-align: center;
    margin-bottom: 34px;
}

.section-header h2,
.cta-box h2 {
    font-size: 38px;
    margin: 0 0 14px;
}

.cards-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.card-box {
    padding: 28px;
}

.card-box h3 {
    margin-top: 0;
    margin-bottom: 12px;
    font-size: 22px;
}

.section-alt {
    padding-top: 0;
}

.cta-box {
    text-align: center;
    background: #f8fbff;
    border: 1px solid var(--line);
    border-radius: calc(var(--radius) + 4px);
    padding: 44px 24px;
}

@media (max-width: 1024px) {
    .hero h1 { font-size: 46px; }
    .grid-2,
    .features-mini,
    .cards-3 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .hero { padding-top: 40px; }
    .hero h1 { font-size: 34px; }
    .lead { font-size: 18px; }
    .panel,
    .card-box,
    .mini-card,
    .cta-box { padding: 22px; }
    .section-header h2,
    .cta-box h2 { font-size: 30px; }
}