:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg:#f4f1eb;--phone:#fffdf8;--ink:#191713;--muted:#756f65;--hairline:#e7dfd2;--surface:#fff;--surface-strong:#fbf5ea;--accent:#e99219;--accent-dark:#ad6208;--good:#237852;--good-bg:#e8f4ed;--bad:#b33a35;--bad-bg:#fae8e5;--shadow:0 24px 70px #29201424;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif}*{box-sizing:border-box}body{background:radial-gradient(circle at top left, #e9921917, transparent 28rem), var(--bg);min-width:320px;color:var(--ink);margin:0}button,select,input{font:inherit}button{-webkit-tap-highlight-color:transparent}.app-shell{justify-content:center;min-height:100svh;padding:0;display:flex}.phone-stage{background:var(--phone);flex-direction:column;gap:14px;width:min(100vw,430px);min-height:100svh;padding:18px 16px 104px;display:flex;position:relative;overflow-x:hidden}@media (width>=720px){.app-shell{align-items:center;padding:28px 0}.phone-stage{min-height:844px;max-height:920px;box-shadow:var(--shadow);border:1px solid #1f191114;border-radius:32px}}.topbar{justify-content:space-between;align-items:center;gap:16px;display:flex}.eyebrow,.source-note,.source-path{color:var(--muted);margin:0;font-size:12px;line-height:1.35}.topbar h1{letter-spacing:0;margin:3px 0 0;font-size:24px;line-height:1.05}.icon-button,.action-bar button,.mode-tabs button,.quick-tools button{cursor:pointer;border:0}.icon-button{width:42px;height:42px;color:var(--accent-dark);background:#f4eadb;border-radius:999px;place-items:center;display:grid}.mode-tabs{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;display:grid}.mode-tabs button,.quick-tools button{color:#60584c;white-space:nowrap;background:#f5efe5;border-radius:999px;justify-content:center;align-items:center;gap:5px;min-height:40px;font-size:13px;font-weight:700;display:inline-flex}.mode-tabs button.active,.quick-tools button.on{background:var(--ink);color:#fffaf0}.filters{grid-template-columns:1fr .76fr;gap:10px;display:grid}.select-wrap{border:1px solid var(--hairline);background:var(--surface);border-radius:16px;gap:4px;padding:9px 34px 9px 12px;display:grid;position:relative}.range-pill{border:1px solid var(--hairline);background:var(--surface);border-radius:16px;gap:4px;min-width:0;padding:9px 12px;display:grid}.select-wrap span,.range-pill span{color:var(--muted);font-size:11px;font-weight:700}.range-pill strong{color:var(--ink);text-overflow:ellipsis;white-space:nowrap;font-size:14px;font-weight:900;line-height:1.2;overflow:hidden}.select-wrap select{width:100%;color:var(--ink);appearance:none;background:0 0;border:0;outline:0;font-size:14px;font-weight:800}.select-wrap svg{color:var(--muted);pointer-events:none;position:absolute;bottom:15px;right:12px}.quick-tools{grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;display:grid}.stats-strip{color:var(--muted);grid-template-columns:repeat(4,minmax(0,1fr));gap:5px;font-size:11px;font-weight:800;display:grid}.stats-strip span{background:#f7f1e8;border-radius:12px;justify-content:center;align-items:center;gap:3px;min-width:0;padding:7px 3px;display:flex}.practice-card,.empty-card{border:1px solid var(--hairline);background:linear-gradient(180deg, #ffffffdb, #fffbf3eb), var(--surface);border-radius:26px;flex-direction:column;flex:1;min-height:455px;padding:18px;display:flex;box-shadow:0 16px 42px #33261414}.practice-card.is-correct{border-color:#23785240}.practice-card.is-wrong{border-color:#b33a353d}.card-meta{color:var(--muted);justify-content:space-between;align-items:center;font-size:12px;font-weight:800;display:flex}.card-meta strong{min-width:38px;color:var(--accent-dark);text-align:center;background:#fff2da;border-radius:999px;padding:5px 8px}.word-block{gap:10px;padding:34px 0 24px;display:grid}.word-block h2{color:var(--ink);letter-spacing:0;overflow-wrap:anywhere;text-decoration:underline;-webkit-text-decoration-color:var(--accent);text-decoration-color:var(--accent);text-underline-offset:7px;margin:0;font-family:Georgia,Times New Roman,Songti SC,serif;font-size:clamp(37px,10vw,54px);line-height:1.03;text-decoration-thickness:5px}.word-block p:last-child{color:#5d5549;margin:0;font-size:14px;line-height:1.55}.choices{gap:10px;display:grid}.choices button{border:1px solid var(--hairline);min-height:58px;color:var(--ink);text-align:left;cursor:pointer;background:#fffdfa;border-radius:18px;grid-template-columns:34px 1fr;align-items:center;gap:9px;padding:12px 14px;font-size:17px;font-weight:800;line-height:1.32;display:grid}.choices button span{width:30px;height:30px;color:var(--accent-dark);background:#f4ecde;border-radius:50%;place-items:center;font-size:13px;display:grid}.choices button.correct{background:var(--good-bg);color:var(--good);border-color:#23785261}.choices button.wrong{background:var(--bad-bg);color:var(--bad);border-color:#b33a3557}.choices button:disabled{opacity:1}.dictation-box{gap:10px;display:grid}.dictation-box input{border:1px solid var(--hairline);width:100%;min-height:58px;color:var(--ink);background:#fffdfa;border-radius:18px;outline:0;padding:0 16px;font-size:18px;font-weight:800}.dictation-box button,.primary-button{background:var(--ink);color:#fffaf0;border:0;border-radius:18px;min-height:50px;font-weight:900}.dictation-box button:disabled{background:#d8cfc0}.feedback{background:var(--surface-strong);border:1px solid #f0dcc0;border-radius:18px;margin-top:auto;padding:13px 14px}.feedback strong{color:var(--accent-dark);font-size:15px;line-height:1.4;display:block}.feedback p{color:#5d5549;margin:4px 0 0;font-size:13px;line-height:1.45}.action-bar{z-index:10;width:min(100vw,430px);padding:10px 12px calc(10px + env(safe-area-inset-bottom));border-top:1px solid var(--hairline);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:#fffdf8eb;grid-template-columns:repeat(4,minmax(0,1fr));gap:7px;display:grid;position:fixed;bottom:0;left:50%;transform:translate(-50%)}@media (width>=720px){.action-bar{border:1px solid #1f19110f;border-radius:0 0 32px 32px;bottom:max(28px,50svh - 460px)}}.action-bar button{color:#5c5142;background:#f4eadb;border-radius:16px;place-items:center;gap:3px;min-height:54px;font-size:12px;font-weight:900;display:grid}.action-bar button.active{color:var(--accent-dark);background:#fff1d7}.action-bar button.continue{background:var(--accent);color:#211407}.action-bar button:disabled{opacity:.48}.source-path{text-align:center;white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.inline-error{background:var(--bad-bg);color:var(--bad);border-radius:14px;margin:0;padding:10px 12px;font-size:13px}.center-state,.empty-card{text-align:center;justify-content:center;align-items:center}.center-state{color:var(--muted);gap:12px}.center-state h1,.empty-card h2{color:var(--ink);margin:0}.center-state p,.empty-card p{max-width:280px;color:var(--muted);margin:0;line-height:1.5}.loader{border:3px solid #eadfce;border-top-color:var(--accent);border-radius:50%;width:32px;height:32px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}@media (prefers-reduced-motion:no-preference){.practice-card{animation:.26s both rise}.choices button{transition:transform .16s,border-color .16s,background .16s}.choices button:not(:disabled):active,.action-bar button:not(:disabled):active{transform:scale(.985)}}@keyframes rise{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}