:root {
    --ink: #161C26;
    --muted: #5B6573;
    --line: #E1E5EB;
    --bg: #F6F7F9;
    --card: #FFFFFF;
    --accent: #2742C4;
}

* { box-sizing: border-box; }

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

body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: 'Manrope', system-ui, -apple-system, 'Segoe UI', sans-serif;
    font-size: 17px;
    line-height: 1.6;
}

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

.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px; }

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

header.site .wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    min-height: 64px;
}

.app-mark {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--ink);
    text-decoration: none;
    font-weight: 800;
    font-size: 18px;
}

.app-mark img { width: 32px; height: 32px; border-radius: 8px; }

.by { color: var(--muted); font-size: 14px; text-decoration: none; }

main { padding: 40px 0 64px; }

h1 {
    font-family: 'Unbounded', 'Manrope', sans-serif;
    font-weight: 700;
    font-size: 30px;
    line-height: 1.2;
    margin: 0 0 8px;
}

h2 { font-size: 21px; margin: 36px 0 8px; }

h3 { font-size: 17px; margin: 24px 0 4px; }

.meta { color: var(--muted); font-size: 15px; margin: 0 0 24px; }

.summary {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 16px 20px;
    margin: 24px 0;
}

.summary ul { margin: 8px 0 0; padding-left: 20px; }

table {
    width: 100%;
    border-collapse: collapse;
    margin: 12px 0;
    font-size: 15px;
    background: var(--card);
}

th, td {
    text-align: left;
    vertical-align: top;
    border: 1px solid var(--line);
    padding: 10px 12px;
}

th { background: var(--bg); font-weight: 700; }

.table-scroll { overflow-x: auto; }

footer.site {
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 14px;
    padding: 24px 0 40px;
}

footer.site address { font-style: normal; }

footer.site nav { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 12px; }

/* Project page */
.hero { text-align: center; padding: 24px 0 8px; }

.hero > img {
    width: 128px;
    height: 128px;
    border-radius: 29px;
    box-shadow: 0 6px 24px rgba(22, 28, 38, 0.18);
}

.hero h1 { font-size: 40px; margin-top: 24px; }

.lede { font-size: 20px; color: var(--muted); margin: 0 0 8px; }

/* The stores' own badges, as on the home page. */
.stores {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
}
.stores a { display: block; border-radius: 8px; transition: transform .15s; }
.stores a:hover { transform: translateY(-2px); }
.stores img { display: block; height: 44px; width: auto; }

@media (prefers-reduced-motion: reduce) {
    .stores a { transition: none; }
    .stores a:hover { transform: none; }
}

.puzzles {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
    margin: 32px 0;
    padding: 0;
    list-style: none;
}

.puzzles li {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 16px;
}

.puzzles strong { display: block; font-size: 17px; }

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

@media (max-width: 480px) {
    h1 { font-size: 25px; }
    .hero h1 { font-size: 32px; }
    .by { display: none; }
}

/* FAQ: questions that open to their answers */
.faq details {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 14px;
    margin: 8px 0;
}

.faq summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    min-height: 52px;
    padding: 12px 16px;
    font-weight: 700;
    cursor: pointer;
    list-style: none;
}

.faq summary::-webkit-details-marker { display: none; }

.faq summary::after {
    content: '';
    flex: none;
    width: 8px;
    height: 8px;
    border-right: 2px solid var(--muted);
    border-bottom: 2px solid var(--muted);
    transform: rotate(45deg);
    margin-top: -4px;
    transition: transform 0.15s;
}

.faq details[open] summary::after { transform: rotate(-135deg); margin-top: 4px; }

.faq details p { margin: 0; padding: 0 16px 14px; font-size: 16px; }

.faq .more { margin-top: 28px; color: var(--muted); }

/* FAQ: the languages it's written in */
.faq .langs {
    display: flex;
    flex-wrap: wrap;
    gap: 4px 14px;
    margin: -12px 0 24px;
    font-size: 14px;
}

.faq .langs a { color: var(--muted); text-decoration: none; }
.faq .langs a:hover { color: var(--ink); }
.faq .langs a[aria-current] { color: var(--ink); font-weight: 700; }