:root {
    --bg: #ffffff;
    --fg: #1d1d1f;
    --muted: #6e6e73;
    --line: #e5e5ea;
    --accent: #3a5bd9;
    --card: #f5f5f7;
    color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #111114;
        --fg: #f2f2f7;
        --muted: #a1a1aa;
        --line: #2c2c31;
        --accent: #8aa2ff;
        --card: #1c1c21;
    }
}

* {
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--fg);
    font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
}

a {
    color: var(--accent);
    overflow-wrap: anywhere;
}

header,
main,
footer {
    max-width: 760px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 8px 24px;
    padding-top: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--line);
}

.brand {
    color: var(--fg);
    font-weight: 700;
    font-size: 18px;
    text-decoration: none;
}

nav {
    display: flex;
    flex-wrap: wrap;
    gap: 4px 20px;
}

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

nav a:hover,
nav a[aria-current="page"] {
    color: var(--fg);
}

main {
    padding-top: 32px;
    padding-bottom: 48px;
}

h1 {
    font-size: 32px;
    line-height: 1.2;
    margin: 0 0 16px;
}

h2 {
    font-size: 20px;
    line-height: 1.3;
    margin: 36px 0 12px;
}

h3 {
    font-size: 17px;
    margin: 20px 0 8px;
}

p,
ul {
    margin: 0 0 12px;
}

ul {
    padding-left: 24px;
}

li {
    margin-bottom: 6px;
}

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

.hero {
    padding: 48px 0 24px;
    text-align: center;
}

.hero h1 {
    font-size: 44px;
}

.hero p {
    color: var(--muted);
    font-size: 18px;
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.card {
    display: block;
    padding: 20px;
    border-radius: 14px;
    background: var(--card);
    color: var(--fg);
    text-decoration: none;
}

.card strong {
    display: block;
    margin-bottom: 4px;
}

.card span {
    color: var(--muted);
    font-size: 15px;
}

.social {
    margin-top: 40px;
    text-align: center;
}

.social ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.social li {
    margin: 0;
}

.social a {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    min-height: 44px;
    padding: 10px 18px;
    border-radius: 999px;
    background: var(--card);
    color: var(--fg);
    font-weight: 600;
    text-decoration: none;
}

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

.social a:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.social svg {
    width: 20px;
    height: 20px;
    flex: none;
    fill: currentColor;
}

.contact {
    margin-top: 36px;
    padding: 20px;
    border-radius: 14px;
    background: var(--card);
}

.contact h2 {
    margin-top: 0;
}

details {
    border-bottom: 1px solid var(--line);
    padding: 12px 0;
}

summary {
    cursor: pointer;
    font-weight: 600;
}

details > *:not(summary) {
    margin-top: 8px;
}

.support-form {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 24px;
}

.support-form label {
    margin-top: 10px;
    font-weight: 600;
}

.support-form input,
.support-form select,
.support-form textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--bg);
    color: var(--fg);
    font: inherit;
}

.support-form textarea {
    resize: vertical;
}

/* Fields shown only for some categories. `:not([hidden])`, or `display` would win over the
   attribute that hides them. */
.support-form .form-group:not([hidden]) {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.support-form input:focus,
.support-form select:focus,
.support-form textarea:focus {
    outline: 2px solid var(--accent);
    outline-offset: 1px;
}

.support-form button {
    align-self: flex-start;
    margin-top: 8px;
    padding: 10px 28px;
    border: 0;
    border-radius: 10px;
    background: var(--accent);
    color: #ffffff;
    font: inherit;
    font-weight: 600;
    cursor: pointer;
}

@media (prefers-color-scheme: dark) {
    .support-form button {
        color: #111114;
    }
}

.support-form button:disabled {
    opacity: 0.6;
    cursor: default;
}

.counter,
.note {
    color: var(--muted);
    font-size: 14px;
}

.counter {
    text-align: right;
}

.form-status {
    padding: 12px 14px;
    border-radius: 10px;
}

.form-status.error {
    background: rgba(220, 38, 38, 0.12);
    color: #b91c1c;
}

@media (prefers-color-scheme: dark) {
    .form-status.error {
        color: #fca5a5;
    }
}

.form-done {
    padding: 20px;
    margin-bottom: 24px;
    border-radius: 14px;
    background: var(--card);
}

.form-done:focus {
    outline: none;
}

footer {
    padding-top: 20px;
    padding-bottom: 32px;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 14px;
}

footer a {
    color: var(--muted);
}