html { scroll-behavior: auto; }
body { display: block; background-size: 28px 28px; color: #263241; }
.preview-note { background: #263241; color: white; padding: 8px 16px; text-align: center; font-size: 12px; }
.sheet { width: 100%; max-width: 420px; margin: auto; padding: 0 16px 32px; }
a:focus-visible, summary:focus-visible { outline: 3px solid #1f6fae; outline-offset: 4px; }
header { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 8px 0; border-bottom: 1px solid #9aaaac; }
.brand { display: inline-flex; align-items: center; gap: 3px; min-height: 44px; text-decoration: none; color: #263241; font-size: 16px; font-weight: 800; letter-spacing: -.5px; white-space: nowrap; }
.brand em { font-style: normal; background: linear-gradient(transparent 52%, #fae889 52%); }
header nav { display: flex; gap: 12px; font-size: 12px; }
header nav a { display: inline-flex; align-items: center; min-height: 44px; }
main { padding-top: 16px; }
.intro { display: grid; grid-template-columns: 1fr; gap: 16px; margin-bottom: 20px; }
h1 { font-size: 28px; line-height: 1.12; letter-spacing: -.8px; margin: 0 0 8px; }
.intro-copy { font-size: 14px; line-height: 1.45; margin: 0 0 8px; }
.comfort { font-size: 11px; color: #546777; margin: 0; display: flex; flex-wrap: wrap; gap: 6px 14px; }
.starter { border: 1px solid #a69779; background: #fff9e9; box-shadow: 3px 4px 0 #d8ccb3; padding: 14px; }
.starter-label { display: inline-block; background: #fae889; padding: 3px 6px; font-size: 12px; font-weight: 700; margin-bottom: 10px; }
.starter-row { display: flex; gap: 12px; align-items: center; }
.starter img { width: 64px; height: 64px; object-fit: cover; border: 1px solid #aa9b7f; flex-shrink: 0; }
.starter h2 { font-size: 20px; margin: 0 0 5px; }
.starter p { font-size: 13px; line-height: 1.45; margin: 0; }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; margin-top: 12px; }
.primary { display: inline-flex; align-items: center; min-height: 44px; background: #285680; color: #fff !important; padding: 10px 12px; border-radius: 3px; font-size: 13px; font-weight: 650; text-decoration: none; }
.actions > a:not(.primary) { display: inline-flex; align-items: center; min-height: 44px; font-size: 13px; }
.choose { border-top: 1px solid #a9b3af; border-bottom: 1px solid #a9b3af; padding: 12px 0; margin-bottom: 20px; }
.choose p { margin: 0 0 8px; font-size: 13px; font-weight: 700; }
.choose nav { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.choose a { display: flex; align-items: center; justify-content: center; min-height: 44px; font-size: 12px; padding: 7px 4px; background: #fcf7e8; border: 1px solid #b4af9b; border-radius: 3px; text-decoration: none; }
.group { margin: 0 0 28px; }
.group-heading { margin-bottom: 12px; }
.group h2 { font-size: 21px; margin: 0 0 5px; scroll-margin-top: 20px; letter-spacing: -.5px; }
.group-heading p { font-size: 13px; line-height: 1.45; margin: 0; color: #4f6275; }
.puzzles { display: grid; grid-template-columns: 1fr; gap: 12px; }
.puzzle-card { display: grid; grid-template-columns: 80px minmax(0, 1fr); gap: 12px; padding: 12px; background: #fff9e9; border: 1px solid #b4aa94; border-bottom: 3px solid #9e917b; color: #263241; text-decoration: none; align-items: start; }
.puzzle-card:hover { background: #fffdf5; border-color: #285680; }
.puzzle-card img { width: 80px; height: 80px; object-fit: cover; border: 1px solid #b4aa94; }
.puzzle-card h3 { font-size: 19px; margin: 0 0 6px; letter-spacing: -.4px; }
.puzzle-card p { font-size: 14px; line-height: 1.45; margin: 0 0 8px; }
.puzzle-card small { display: block; font-size: 11px; line-height: 1.45; color: #566879; }
.play { display: block; margin-top: 10px; color: #1f6fae; font-size: 13px; font-weight: 750; }
.notebook { padding: 16px; background: #eae3cc; border: 1px solid #b1a387; margin-bottom: 28px; }
.notebook h2 { font-size: 19px; margin: 0 0 8px; }
.notebook p { font-size: 13px; line-height: 1.55; margin: 0; }
.notebook a { display: inline-flex; align-items: center; min-height: 44px; font-size: 14px; margin-top: 8px; }
.guide > h2, .faq > h2 { font-size: 21px; margin: 0 0 14px; }
.guide p { font-size: 14px; line-height: 1.6; margin: 0 0 12px; }
.faq { margin-top: 28px; }
.faq details { border-top: 1px solid #a9b3af; }
.faq summary { min-height: 44px; padding: 13px 0; cursor: pointer; font-size: 14px; font-weight: 650; }
.faq details p { font-size: 14px; line-height: 1.6; margin: 0 0 13px; }
footer { margin-top: 28px; padding-top: 16px; border-top: 1px solid #a9b3af; font-size: 12px; color: #546777; }

/* Homepage uses the same mobile column as the catalog. */
.home-hero { margin-bottom: 24px; }
.home-hero h1 { font-size: 31px; line-height: 1.12; }
.home-hero > p { margin: 12px 0; font-size: 15px; line-height: 1.5; }
.home-hero .actions { align-items: stretch; margin: 16px 0 12px; }
.home-hero .actions a { justify-content: center; }
.home-section { margin: 0 0 28px; }
.home-section > h2 { margin: 0 0 8px; font-size: 21px; line-height: 1.2; }
.home-section > p { margin: 0 0 14px; font-size: 14px; line-height: 1.5; }
.section-link { display: inline-flex; align-items: center; min-height: 44px; font-size: 14px; font-weight: 650; }
.learn-card { display: block; border: 1px solid #b4aa94; background: #fff9e9; padding: 14px; margin: 0 0 12px; color: inherit; text-decoration: none; }
.learn-card h3 { font-size: 18px; margin: 0 0 8px; }
.learn-card p { font-size: 14px; line-height: 1.5; margin: 0; }
.learn-card .play { margin-top: 12px; }
.mindset { background: #eae3cc; padding: 16px; border-left: 3px solid #9e917b; }
.mindset p:last-child { margin-bottom: 0; }

.no-ads { display: inline-block; margin: 0 0 10px; padding: 4px 8px; background: #fae889; color: #263241; font-size: 13px; font-weight: 800; line-height: 1.2; border-radius: 2px; }

.sound-control { top: 0; overflow: auto; margin: 8px 0 0; }
.sound-control a { display: inline-flex; align-items: center; min-height: 44px; }