:root {
    --bg: #fff8f3;
    --surface: #ffffff;
    --surface-2: #fff4ec;
    --text: #2c1d16;
    --muted: #6f625b;
    --line: #f1ddd2;
    --brand: #ff6c2f;
    --brand-soft: rgba(255, 108, 47, 0.1);
    --accent: #e75b20;
    --danger-soft: #fff4f2;
    --shadow: 0 18px 50px rgba(106, 58, 33, 0.08);
    --radius: 18px;
    --max: 980px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(255, 108, 47, 0.1), transparent 24%),
        radial-gradient(circle at top right, rgba(255, 108, 47, 0.06), transparent 18%),
        var(--bg);
    line-height: 1.65;
}

a {
    color: var(--accent);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.page {
    width: min(calc(100% - 32px), var(--max));
    margin: 0 auto;
    padding: 28px 0 60px;
}

.topbar {
    position: sticky;
    top: 0;
    z-index: 10;
    backdrop-filter: blur(10px);
    background: rgba(255, 248, 243, 0.82);
    border-bottom: 1px solid rgba(241, 221, 210, 0.9);
}

.topbar-inner {
    width: min(calc(100% - 32px), var(--max));
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 14px 0;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.brand-badge {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, var(--brand), var(--accent));
    color: #fff;
    box-shadow: var(--shadow);
    font-weight: 800;
}

.nav {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.nav a {
    padding: 9px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.75);
    border: 1px solid var(--line);
    color: var(--text);
    font-size: 14px;
}

.nav a:hover {
    text-decoration: none;
    background: #fff7f2;
    border-color: rgba(255, 108, 47, 0.2);
}

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

.hero {
    padding: 28px;
    margin-top: 18px;
}

.hero .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 12px;
    border-radius: 999px;
    background: var(--brand-soft);
    color: var(--brand);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.hero h1 {
    margin: 14px 0 10px;
    font-size: clamp(30px, 5vw, 44px);
    line-height: 1.1;
    letter-spacing: -0.04em;
}

.hero p {
    margin: 0;
    max-width: 760px;
    color: var(--muted);
    font-size: 16px;
}

.meta-row {
    margin-top: 18px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.meta-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--surface-2);
    color: var(--muted);
    font-size: 14px;
}

.panel {
    margin-top: 18px;
    padding: 22px;
}

.panel h2,
.content h2 {
    margin: 0 0 14px;
    font-size: 24px;
    line-height: 1.2;
    letter-spacing: -0.03em;
}

.toc {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 12px;
}

.toc a {
    display: block;
    padding: 14px 16px;
    background: var(--surface-2);
    border: 1px solid var(--line);
    border-radius: 14px;
    color: var(--text);
    font-weight: 600;
}

.toc a small {
    display: block;
    color: var(--muted);
    font-weight: 500;
    margin-top: 3px;
}

.toc a:hover {
    text-decoration: none;
    border-color: rgba(255, 108, 47, 0.22);
    background: #fff7f2;
}

.notice-card {
    margin-top: 18px;
    padding: 18px 20px;
    background: linear-gradient(180deg, #fff, #fff8f4);
}

.notice-card strong {
    display: block;
    margin-bottom: 6px;
}

.notice-card p {
    margin: 0;
    color: var(--muted);
}

.content {
    margin-top: 18px;
}

.section-card {
    padding: 24px;
    margin-bottom: 16px;
}

.section-number {
    display: inline-flex;
    min-width: 36px;
    height: 36px;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: var(--brand-soft);
    color: var(--brand);
    font-weight: 800;
    margin-bottom: 12px;
}

.section-card h3 {
    margin: 0 0 10px;
    font-size: 22px;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.section-card p {
    margin: 0 0 12px;
    color: var(--text);
}

.section-card ul,
.section-card ol {
    margin: 10px 0 0 0;
    padding-left: 22px;
}

.section-card li {
    margin: 8px 0;
}

.section-card strong {
    color: #261912;
}

.section-card em {
    color: var(--muted);
}

.inline-note {
    margin-top: 12px;
    padding: 12px 14px;
    border-left: 4px solid var(--accent);
    background: #fff6f0;
    border-radius: 12px;
    color: var(--muted);
}

.summary-box {
    margin-top: 12px;
    display: grid;
    gap: 10px;
}

.summary-item {
    padding: 12px 14px;
    background: var(--surface-2);
    border: 1px solid var(--line);
    border-radius: 12px;
}

.footer {
    color: var(--muted);
    text-align: center;
    font-size: 14px;
    padding: 26px 0 6px;
}

.codeish {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
    font-size: 0.95em;
}

.list-tight li {
    margin: 6px 0;
}

@media (max-width: 720px) {
    .topbar-inner {
        align-items: flex-start;
        flex-direction: column;
    }

    .hero,
    .panel,
    .section-card,
    .notice-card {
        padding: 18px;
    }

    .nav {
        gap: 8px;
    }
}

@media print {
    .topbar {
        display: none;
    }

    body {
        background: #fff;
    }

    .page {
        width: 100%;
        padding: 0;
    }

    .hero,
    .panel,
    .section-card,
    .notice-card {
        box-shadow: none;
        border-color: #ddd;
    }
}