:root {
    --bg: #f6f7f9;
    --surface: #fff;
    --text: #1a1d21;
    --muted: #5c6570;
    --accent: #1e5a8c;
    --accent-hover: #164a73;
    --border: #e2e5e9;
    --error: #b42318;
    --success: #0f6d4a;
    --font: system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu, sans-serif;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: var(--font);
    font-size: 1rem;
    line-height: 1.5;
    color: var(--text);
    background: var(--bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.site-header {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

.site-header__inner {
    max-width: 52rem;
    margin: 0 auto;
    padding: 0.75rem 1.25rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: inherit;
}

.brand__logo {
    display: block;
    height: 2.5rem;
    width: auto;
}

.brand__text {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--muted);
}

.nav {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem 1rem;
}

.nav__link {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
}

.nav__link:hover {
    text-decoration: underline;
    color: var(--accent-hover);
}

.nav__link--active {
    color: var(--text);
    text-decoration: underline;
}

.nav__link--muted {
    color: var(--muted);
    font-weight: 400;
}

.main {
    flex: 1;
    max-width: 52rem;
    margin: 0 auto;
    padding: 2rem 1.25rem 3rem;
    width: 100%;
}

.main--wide {
    max-width: 72rem;
}

.site-footer {
    border-top: 1px solid var(--border);
    background: var(--surface);
    padding: 1rem 1.25rem;
    text-align: center;
    font-size: 0.875rem;
    color: var(--muted);
}

.site-footer p {
    margin: 0;
}

.hero h1 {
    margin: 0 0 0.5rem;
    font-size: 1.75rem;
}

.lead {
    font-size: 1.1rem;
    color: var(--muted);
    margin: 0 0 2rem;
}

.lead--tight {
    margin-bottom: 1.25rem;
}

.muted-block {
    color: var(--muted);
    margin: 0 0 1.5rem;
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.25rem 1.5rem;
    margin-bottom: 1.25rem;
}

.card h2 {
    margin-top: 0;
    font-size: 1.15rem;
}

.card--public {
    border-left: 4px solid var(--accent);
}

.card--member {
    border-left: 4px solid #6b4f9a;
}

.card--narrow {
    max-width: 22rem;
    margin-left: auto;
    margin-right: auto;
}

.card--upload {
    max-width: 28rem;
}

.prose h1 {
    margin-top: 0;
}

.meta {
    color: var(--muted);
    font-size: 0.95rem;
}

.resource-list {
    padding-left: 1.25rem;
}

.resource-list li {
    margin-bottom: 0.5rem;
}

.alert {
    padding: 0.75rem 1rem;
    border-radius: 6px;
    margin-bottom: 1rem;
}

.alert--error {
    background: #fef2f2;
    color: var(--error);
    border: 1px solid #fecdca;
}

.alert--success {
    background: #ecfdf5;
    color: var(--success);
    border: 1px solid #a7f3d0;
}

.button {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--accent);
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    font-size: 1rem;
    font-family: inherit;
}

.button:hover {
    border-color: var(--accent);
}

.button--primary {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

.button--primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
}

.form__label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.35rem;
    font-size: 0.9rem;
}

.form__input {
    width: 100%;
    padding: 0.5rem 0.65rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 1rem;
    margin-bottom: 1rem;
    font-family: inherit;
}

.form .button--primary {
    width: 100%;
}

.form__footer {
    margin-top: 1rem;
    font-size: 0.9rem;
}

.form__footer a {
    color: var(--accent);
}

.form__hint {
    margin: -0.5rem 0 0.5rem;
    font-size: 0.875rem;
    color: var(--muted);
}

input[type="file"].form__input {
    padding: 0.35rem 0;
}

.doc-grid {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
    gap: 1.25rem;
}

.doc-card {
    margin: 0;
}

.doc-card__link {
    display: flex;
    flex-direction: column;
    height: 100%;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.doc-card__link:hover {
    border-color: var(--accent);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

.doc-card__thumb-wrap {
    display: block;
    background: var(--bg);
    aspect-ratio: 10 / 7;
    overflow: hidden;
}

.doc-card__thumb {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.doc-card__body {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding: 0.85rem 1rem 1rem;
}

.doc-card__title {
    font-weight: 600;
    font-size: 1rem;
    line-height: 1.3;
}

.doc-card__version {
    font-size: 0.875rem;
    color: var(--muted);
}

.doc-card__cta {
    margin-top: 0.35rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent);
}