:root {
    --primary: #0052ff;
    --primary-dark: #003fcc;
    --text: #1f2937;
    --muted: #4b5563;
    --bg: #eef3f8;
    --card: #ffffff;
    --border: #d8e2ee;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 20px;
    color: var(--text);
    background: linear-gradient(180deg, #f8fbff 0%, var(--bg) 100%);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.65;
}

.max-container {
    max-width: 920px;
    margin: 0 auto;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 32px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.06);
}

header {
    margin-bottom: 26px;
}

h1 {
    margin: 0 0 10px 0;
    color: var(--primary);
    line-height: 1.25;
}

p {
    margin-top: 0;
}

.subtext {
    color: var(--muted);
}

.nav-links {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 14px;
}

.btn-primary,
.btn-secondary {
    display: inline-block;
    padding: 10px 14px;
    border-radius: 9px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.15s ease;
}

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

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

.btn-secondary {
    color: var(--primary);
    border: 1px solid var(--primary);
    background: #fff;
}

.btn-secondary:hover {
    background: #f2f6ff;
}

.faq-item {
    margin-bottom: 22px;
}

.question {
    font-weight: 700;
    color: #111827;
    font-size: 1.12rem;
    margin-bottom: 8px;
    display: block;
}

.answer {
    background: #f9fbff;
    border-left: 4px solid var(--primary);
    padding: 14px 16px;
    border-radius: 8px;
}

.answer p:last-child {
    margin-bottom: 0;
}

.quick-index {
    margin: 0 0 24px 0;
    padding: 12px 14px;
    background: #f7faff;
    border: 1px solid var(--border);
    border-radius: 10px;
}

.quick-index h2 {
    margin: 0 0 8px 0;
    font-size: 1rem;
}

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

.quick-index a {
    color: var(--primary);
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 14px 0 0 0;
}

th,
td {
    border: 1px solid #d6deeb;
    padding: 10px;
    text-align: left;
}

th {
    background: #f1f5fb;
}

strong {
    color: var(--primary);
}

footer {
    text-align: center;
    margin-top: 28px;
    color: #6b7280;
    font-size: 0.85rem;
}

@media (max-width: 640px) {
    body {
        padding: 12px;
    }

    .max-container {
        padding: 20px;
    }

    h1 {
        font-size: 1.45rem;
    }
}