:root{--ink:#20283a;--muted:#727b90;--line:#e6e9f2;--blue:#3b5ccc;--bluewash:#edf1ff;--bg:#f6f7fb;--card:#fff;--green:#1b9c77;--orange:#ed9634;--red:#dc5c68;--star:#8160d6}*{box-sizing:border-box}body{margin:0;background:var(--bg);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);font-size:16px;padding-bottom:88px}#app,#nav{max-width:680px;margin:auto}.top{padding:24px 20px 16px;background:linear-gradient(135deg,#3b5ccc,#6d7de3);color:#fff}.top h1{font-size:22px;margin:6px 0}.eyebrow{font-size:13px;opacity:.82}.topline{display:flex;justify-content:space-between;align-items:center}.pill{background:#ffffff2b;border:1px solid #ffffff40;border-radius:99px;padding:6px 10px;font-size:13px}.content{padding:16px}.card{background:var(--card);border-radius:16px;padding:16px;margin:0 0 14px;box-shadow:0 2px 10px #2535670a}.card h2,.card h3{font-size:17px;margin:0 0 12px}.summary{display:grid;grid-template-columns:repeat(3,1fr);gap:9px}.metric{background:var(--bluewash);padding:11px;border-radius:12px}.metric b{display:block;font-size:20px;color:var(--blue)}.metric span{font-size:12px;color:var(--muted)}.progress{height:8px;background:#e6e9f2;border-radius:99px;overflow:hidden}.progress i{display:block;height:100%;background:var(--blue);border-radius:99px}.task-group{padding:12px 0;border-top:1px solid var(--line)}.task-group:first-of-type{border-top:0}.group-title{display:flex;justify-content:space-between;font-weight:700}.task{display:flex;gap:10px;align-items:center;padding:10px 0;cursor:pointer}.task input{width:20px;height:20px;accent-color:var(--blue)}.task.done span{text-decoration:line-through;color:var(--muted)}.tag{font-size:12px;padding:3px 7px;border-radius:99px;background:#f0f2f7;color:var(--muted);margin-left:auto}.review{border-left:4px solid var(--orange);padding:10px 12px;background:#fff9ef;border-radius:8px;margin-top:8px}.review small{color:var(--muted)}button,.button{background:var(--blue);border:0;color:white;border-radius:10px;padding:11px 14px;font:inherit;cursor:pointer}button.secondary{background:var(--bluewash);color:var(--blue)}button.ghost{background:transparent;color:var(--blue);padding:5px}.row{display:flex;gap:10px;align-items:center}.row>*{flex:1}input,select,textarea{width:100%;font:inherit;border:1px solid var(--line);border-radius:10px;padding:10px;background:#fff}textarea{min-height:76px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.form-grid .wide{grid-column:1/-1}.feelings{display:flex;gap:8px}.feelings button{flex:1;background:#f0f2f7;color:var(--ink);font-size:14px}.feelings button.active{background:var(--blue);color:#fff}.status{display:flex;gap:7px;flex-wrap:wrap}.status button{padding:7px 9px;background:#f0f2f7;color:var(--ink)}.status button.selected{outline:2px solid var(--blue)}.status .mastered{color:var(--green)}.status .familiar{color:var(--orange)}.status .forgotten{color:var(--red)}.status .repeat_error{color:var(--star)}.kitem{padding:11px 0;border-bottom:1px solid var(--line)}.kitem:last-child{border:0}.kmeta{font-size:12px;color:var(--muted);margin-top:5px}.chart{height:130px;display:flex;gap:7px;align-items:end;border-bottom:1px solid var(--line);padding:0 5px}.bar{flex:1;background:linear-gradient(#8190ec,#3b5ccc);border-radius:6px 6px 0 0;position:relative;min-width:20px}.bar span{position:absolute;top:-19px;font-size:11px;color:var(--muted);left:50%;transform:translateX(-50%)}.tabs{display:flex;gap:7px;overflow:auto;margin-bottom:12px}.tabs button{white-space:nowrap;background:#eef0f7;color:var(--ink);padding:8px 11px}.tabs button.active{background:var(--blue);color:#fff}.notice{font-size:13px;color:var(--muted);line-height:1.5;background:#f6f7fb;padding:10px;border-radius:9px}#nav{position:fixed;bottom:0;left:0;right:0;display:flex;background:#fff;border-top:1px solid var(--line);padding:8px max(12px,calc((100vw - 680px)/2 + 12px));z-index:5}#nav button{flex:1;background:transparent;color:var(--muted);font-size:12px;padding:8px 3px}#nav button.active{color:var(--blue);font-weight:700}.empty{text-align:center;color:var(--muted);padding:20px}.small{font-size:13px;color:var(--muted)}.report{line-height:1.75}.badge{display:inline-block;background:#fff3d8;color:#a6670b;padding:5px 9px;border-radius:99px;font-size:13px;margin:2px}.media input{padding:7px}.score{font-size:28px;font-weight:800;color:var(--blue)}@media(min-width:650px){.content{padding:24px}.top{border-radius:0 0 24px 24px}.summary{grid-template-columns:repeat(4,1fr)}}