.topic-sub{margin-top:4px}.topic-search{margin-top:24px}.sd-topic-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:12px;gap:12px;margin-top:16px}.sd-topic-tile{display:flex;flex-direction:column;align-items:center;gap:8px;padding:16px 8px;background:var(--sd-card);border:1px solid rgb(var(--sd-border-rgb)/.6);border-radius:var(--sd-radius-lg);box-shadow:var(--sd-shadow-hair);transition:border-color var(--sd-dur-fast) var(--sd-ease-standard),background-color var(--sd-dur-fast) var(--sd-ease-standard),box-shadow var(--sd-dur-fast) var(--sd-ease-standard),transform var(--sd-dur-instant) var(--sd-ease-standard)}.sd-topic-tile:hover{box-shadow:var(--sd-shadow-lift)}.sd-topic-tile:active{transform:scale(.98)}.sd-topic-tile.is-active{border-color:var(--sd-primary);background:var(--sd-accent)}.sd-topic-tile.is-active .sd-topic-tile__label{color:var(--sd-accent-fg)}.sd-topic-tile__emoji{font-size:22px;line-height:1}.sd-topic-tile__label{font-size:12px;line-height:1.4;letter-spacing:.02em;font-weight:500;color:var(--sd-muted-fg)}.topic-custom{margin-top:20px}.topic-difficulty{margin-top:24px}.topic-levels{margin-top:12px}.topic-ctas{margin-top:32px}