.topic-practice-page{width:min(920px,calc(100% - 32px));margin:32px auto 90px}.topic-practice-top{display:flex;justify-content:space-between;gap:10px;margin-bottom:16px}.topic-practice-card{padding:clamp(20px,4vw,38px);border:1px solid var(--line);border-radius:20px;background:var(--surface);box-shadow:var(--shadow-1)}.topic-practice-title h1{margin:5px 0 18px}.topic-practice-title label{display:block;margin:0 0 6px;color:var(--ink-muted);font-size:13px}.topic-practice-title select{width:min(100%,420px);min-height:44px;padding:8px 12px;border:1px solid var(--line);border-radius:9px;background:var(--surface);color:var(--ink);font:inherit}.topic-practice-modes{display:flex;flex-wrap:wrap;gap:8px;margin:22px 0 16px}.topic-practice-question{display:grid;gap:10px;padding:clamp(14px,3vw,24px);border-radius:14px;background:var(--surface-soft)}.topic-practice-meta{display:flex;justify-content:space-between;gap:10px;color:var(--ink-weak);font-size:12px}.topic-practice-reference{padding:14px;border-left:3px solid var(--accent);border-radius:6px;background:var(--surface);font-size:18px;font-weight:700;line-height:1.6}.topic-practice-question>p{margin:4px 0;color:var(--ink-muted);font-size:14px;line-height:1.65}.topic-practice-question .word-stage{min-height:132px;margin-top:4px;padding:24px 12px;display:flex;align-content:center;align-items:flex-end;justify-content:center;flex-wrap:wrap;gap:18px 10px;border:1px solid #e6eee3;border-radius:14px;background:#f6faf4;cursor:text}.topic-practice-question .growth-word{display:inline-block;min-height:1.35em;padding:2px 2px 7px;border-bottom:3px solid;font-size:clamp(22px,4vw,31px);font-weight:750;line-height:1.15;letter-spacing:-.025em}.topic-practice-question .growth-word.done{color:#26754a;border-color:#26754a}.topic-practice-question .growth-word.blank{color:transparent;border-color:#d4dcd5}.topic-practice-question .growth-word.active{overflow:hidden;color:#315b3d;border-color:#318152;white-space:nowrap}.topic-practice-question .growth-word.active.wrong{color:#a65027;border-color:#a65027}.topic-practice-question .growth-word.active.hint{color:#8a9490;border-bottom-style:dashed}.topic-practice-question .growth-word.hint-all{color:#8a9490;border-color:#b8c7bb;border-bottom-style:dashed}.topic-practice-question .growth-ghost{position:fixed;left:8px;bottom:8px;z-index:-1;width:24px;height:24px;border:0;opacity:.01;font-size:16px}.topic-practice-question .growth-feedback{min-height:42px;padding-top:12px;color:#748078;font-size:13px;line-height:1.5}.topic-practice-question .growth-feedback.error{color:#a65027}.topic-practice-question .growth-feedback.success{color:#17703b}.topic-practice-question .grow-actions{display:flex;align-items:center;justify-content:flex-start;gap:14px;margin-top:5px}.topic-practice-question .grow-shortcut-actions{display:flex;flex-wrap:wrap;gap:8px}.topic-practice-question .shortcut-action{display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:6px;min-width:128px;min-height:64px;padding:10px 12px;border:1px solid #d5e4d5;border-radius:11px;background:#f8fbf6;color:#315b3d;text-align:left;font:inherit;font-size:12px;font-weight:750;cursor:pointer}.topic-practice-question .shortcut-action:disabled{opacity:.5;cursor:not-allowed}.topic-practice-question .shortcut-action .action-name{display:flex;align-items:center;gap:7px}.topic-practice-question .shortcut-action .icon{width:16px;height:16px}.topic-practice-question .shortcut-action .action-shortcut{display:flex;align-items:center;gap:3px;color:#63806b;font-size:10px}.topic-practice-question .shortcut-action kbd{min-width:18px;padding:2px 4px;border:1px solid #cbdccf;border-radius:4px;background:#fff;color:#315b3d;font:inherit;font-size:10px;text-align:center}.topic-practice-actions{display:flex;flex-wrap:wrap;gap:8px}.topic-practice-audio-status{min-height:20px;margin:9px 0 0;color:#688071;font-size:12px;line-height:1.5}.topic-practice-loading{min-height:35vh;display:grid;place-content:center;color:var(--ink-muted)}
.topic-practice-loading .tm-loading{min-height:35vh;gap:14px;user-select:none;animation:tm-load-in .35s ease}.topic-practice-loading .tm-logo{display:flex;align-items:center;color:#1f2937;font-size:21px;font-weight:700;letter-spacing:.02em}.topic-practice-loading .tm-logo i{width:8px;height:8px;margin-left:7px;border-radius:50%;background:var(--green);animation:tm-dot 1.2s ease-in-out infinite}.topic-practice-loading .tm-track{width:168px;height:3px;border-radius:999px;background:var(--line);overflow:hidden}.topic-practice-loading .tm-track b{display:block;width:42%;height:100%;border-radius:999px;background:var(--green);animation:tm-slide 1.15s ease-in-out infinite}.topic-practice-loading .tm-sub{color:var(--muted);font-size:13px;letter-spacing:.05em}@keyframes tm-slide{0%{transform:translateX(-110%)}100%{transform:translateX(360%)}}@keyframes tm-dot{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(1.6);opacity:.5}}@keyframes tm-load-in{from{opacity:0}to{opacity:1}}@media(prefers-reduced-motion:reduce){.topic-practice-loading .tm-track b,.topic-practice-loading .tm-logo i{animation:none}}
@media(max-width:620px){.topic-practice-page{width:min(100% - 20px,920px);margin:16px auto 84px}.topic-practice-top .button{flex:1;min-height:44px}.topic-practice-card{padding:20px 15px}.topic-practice-meta{font-size:11px}.topic-practice-question .word-stage{min-height:150px;padding:22px 8px;gap:16px 8px}.topic-practice-question .growth-word{font-size:24px}.topic-practice-question .grow-shortcut-actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:7px}.topic-practice-question .shortcut-action{width:100%;min-width:0;min-height:64px;padding:9px 11px}.topic-practice-question [data-action="play"]{grid-column:1/-1}.topic-practice-actions .button{flex:1;min-height:44px}}