:root{--bg: #f4f6fb;--surface: #ffffff;--surface-2: #f8f9fd;--text: #18213a;--text-2: #4a5470;--muted: #6b7491;--line: #e3e7f1;--primary: #2f6fed;--primary-2: #1f56c9;--primary-soft: #e9f0ff;--key: #fff1c9;--key-line: #f2b632;--key-text: #7a4b00;--green: #14915a;--green-soft: #e3f6ec;--red: #d63a3a;--red-soft: #fdeaea;--amber: #f0a020;--vi: #d83a3a;--zh: #c2410c;--radius: 16px;--shadow: 0 1px 2px rgba(24, 33, 58, .04), 0 4px 16px rgba(24, 33, 58, .06);--font: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--font-zh: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;color-scheme:light}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:16px;line-height:1.55;-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit;color:inherit}button{cursor:pointer}button:disabled{cursor:default}:focus-visible{outline:3px solid rgba(47,111,237,.45);outline-offset:2px}.zh-text,[lang=zh-CN]{font-family:var(--font-zh)}.muted{color:var(--muted)}.dot{color:#b5bbcc;margin:0 2px}h1,h2,h3{line-height:1.25;margin:0}.topbar{position:sticky;top:0;z-index:20;background:#ffffffeb;backdrop-filter:saturate(1.4) blur(10px);-webkit-backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line);padding-top:env(safe-area-inset-top)}.topbar-in{max-width:1080px;margin:0 auto;height:60px;padding:0 16px;display:flex;align-items:center;gap:16px}.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;color:var(--text);min-width:0}.brand img{border-radius:9px;flex:none}.brand-name.short{display:none}.brand-name{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.topnav{display:flex;gap:4px;margin-left:12px}.topnav a{display:flex;align-items:center;gap:6px;padding:8px 12px;border-radius:10px;color:var(--text-2);font-weight:600;font-size:15px;white-space:nowrap}.topnav a:hover{background:var(--surface-2)}.topnav a.on{background:var(--primary-soft);color:var(--primary)}.top-actions{margin-left:auto;display:flex;align-items:center;gap:8px;flex:none}.streak-pill{display:inline-flex;align-items:center;gap:4px;padding:4px 10px;border-radius:999px;background:#fff3e2;color:#c25e00;font-weight:700;font-size:14px}.lang-switch{display:flex;background:var(--surface-2);border:1px solid var(--line);border-radius:10px;padding:2px}.lang-switch button{border:0;background:transparent;padding:4px 10px;border-radius:8px;font-weight:700;font-size:13px;color:var(--muted)}.lang-switch button.on{background:var(--surface);color:var(--primary);box-shadow:0 1px 3px #00000014}.icon-btn{border:0;background:transparent;width:40px;height:40px;border-radius:10px;display:grid;place-items:center;color:var(--text-2);flex:none}.icon-btn:hover{background:var(--surface-2)}.main{max-width:820px;margin:0 auto;padding:20px 16px 40px}.page{display:flex;flex-direction:column;gap:16px}.info{background:var(--primary-soft);color:var(--primary-2);border-radius:12px;padding:10px 14px;margin:0;font-weight:500}.info.wide{max-width:788px;margin:16px auto 0}.bottomnav{display:none}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:42px;padding:8px 16px;border-radius:12px;border:1px solid var(--line);background:var(--surface);color:var(--text);font-weight:600;font-size:15px;white-space:nowrap;transition:background .15s,border-color .15s,transform .05s}.btn:hover:not(:disabled){border-color:#c9d0e2;background:var(--surface-2)}.btn:active:not(:disabled){transform:translateY(1px)}.btn:disabled{opacity:.45}.btn.primary{background:var(--primary);border-color:var(--primary);color:#fff}.btn.primary:hover:not(:disabled){background:var(--primary-2);border-color:var(--primary-2)}.btn.success{background:var(--green);border-color:var(--green);color:#fff}.btn.success:hover{background:#0f7a4b}.btn.danger{color:var(--red);border-color:#f3c6c6}.btn.ghost{border-color:transparent;background:transparent;color:var(--primary)}.btn.on{background:var(--primary-soft);border-color:#c5d6fb;color:var(--primary)}.btn.big{min-height:52px;font-size:16px;padding:10px 22px}.btn.small{min-height:34px;padding:4px 12px;font-size:14px}.link{border:0;background:none;color:var(--primary);font-weight:600;padding:4px}.row-btns{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}.day-head{display:flex;flex-direction:column;gap:8px}.day-head-row{display:flex;gap:8px;flex-wrap:wrap}.chip{display:inline-flex;align-items:center;gap:4px;padding:4px 12px;border-radius:999px;background:var(--surface);border:1px solid var(--line);font-size:13px;font-weight:600;color:var(--text-2)}.theme-chip{background:var(--primary-soft);border-color:#cfdcfb;color:var(--primary-2)}.day-head h1{font-size:28px;font-weight:800;display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 12px}.day-no{color:var(--primary)}.day-sub{margin:0;color:var(--text-2);display:flex;align-items:center;flex-wrap:wrap;gap:6px;font-size:15px}.badge-today{background:var(--amber);color:#fff;font-size:12px;font-weight:700;padding:2px 8px;border-radius:999px}.week-strip{display:grid;grid-template-columns:repeat(7,1fr);gap:6px;margin-top:6px}.ws-day{display:flex;flex-direction:column;align-items:center;padding:6px 2px;border-radius:12px;background:var(--surface);border:1px solid var(--line);font-size:12px;color:var(--muted);line-height:1.3}.ws-num{font-weight:800;font-size:16px;color:var(--text)}.ws-mark{height:16px;display:grid;place-items:center;color:#c3c9d8}.ws-day.done .ws-mark{color:var(--green)}.ws-day.locked{opacity:.55}.ws-day.is-today{border-color:var(--amber)}.ws-day.current{background:var(--primary);border-color:var(--primary);color:#dbe6ff}.ws-day.current .ws-num,.ws-day.current .ws-mark{color:#fff}.toolbar{display:flex;gap:8px;flex-wrap:wrap;align-items:center;position:sticky;top:calc(60px + env(safe-area-inset-top));z-index:10;background:var(--bg);padding:8px 0;margin:-8px 0}.tr-toggles{display:flex;align-items:center;gap:4px;margin-left:auto}.tr-label{font-size:13px;font-weight:600;color:var(--muted);margin-right:2px}.tog{border:1px solid var(--line);background:var(--surface);border-radius:10px;padding:6px 10px;font-weight:700;font-size:13px;color:var(--muted);min-height:42px;text-decoration:line-through}.tog.on{color:var(--text);text-decoration:none;border-color:#c9d0e2}.sentences{display:flex;flex-direction:column;gap:14px}.sentence{transition:border-color .2s,box-shadow .2s;scroll-margin-top:140px}.sentence.active{border-color:var(--primary);box-shadow:0 0 0 3px #2f6fed26,var(--shadow)}.sentence-top{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:6px}.num{width:30px;height:30px;border-radius:50%;background:var(--primary-soft);color:var(--primary);font-weight:800;display:grid;place-items:center;font-size:15px;flex:none}.sentence-actions{display:flex;gap:6px}.audio-btn{display:inline-flex;align-items:center;gap:6px;border:1px solid #cfdcfb;background:var(--primary-soft);color:var(--primary);border-radius:999px;padding:6px 12px;font-weight:600;font-size:14px;min-height:38px}.audio-btn.slow{background:#fff6e6;border-color:#f6dcae;color:#b06a00}.audio-btn.playing{background:var(--primary);border-color:var(--primary);color:#fff;animation:pulse 1s ease-in-out infinite}.audio-btn.slow.playing{background:#e08a00;border-color:#e08a00}@keyframes pulse{50%{box-shadow:0 0 0 6px #2f6fed26}}.en{font-size:22px;font-weight:700;line-height:1.4;margin:4px 0 8px;color:var(--text);letter-spacing:-.01em}.en.big{font-size:26px}mark.key{background:linear-gradient(transparent 55%,var(--key) 55%);color:inherit;border-bottom:2px solid var(--key-line);padding:0 1px;cursor:pointer}.trs{display:flex;flex-direction:column;gap:4px}.tr{margin:0;display:flex;gap:8px;align-items:baseline;color:var(--text-2);font-size:16px}.tr.small{font-size:15px;margin-top:4px}.tr-tag{flex:none;font-size:11px;font-weight:800;border-radius:6px;padding:1px 6px;position:relative;top:-1px;font-family:var(--font)}.tr-tag.vi{background:#fdeaea;color:var(--vi)}.tr-tag.zh{background:#fff0e4;color:var(--zh)}.keybox{display:flex;flex-wrap:wrap;align-items:center;gap:6px 10px;margin-top:12px;padding:8px 10px;border-radius:12px;background:#fffaf0;border:1px dashed #f1d39a;font-size:15px}.key-play{display:inline-flex;align-items:center;gap:6px;border:0;background:var(--key);color:var(--key-text);padding:3px 10px;border-radius:8px}.keybox.playing .key-play{background:var(--key-line);color:#fff}.key-mean{color:var(--text-2)}.note{display:flex;gap:8px;align-items:flex-start;margin:10px 0 0;color:var(--muted);font-size:14px}.note svg{flex:none;margin-top:3px;color:var(--amber)}.cover{width:100%;min-height:92px;border:2px dashed #cdd5e6;background:repeating-linear-gradient(-45deg,#f6f8fc,#f6f8fc 10px,#eef2f9 10px,#eef2f9 20px);border-radius:12px;color:var(--text-2);font-weight:600;display:flex;align-items:center;justify-content:center;gap:8px;margin-top:4px}.cover.big{min-height:140px}.done-row{display:flex;justify-content:center;padding:8px 0}.done-row .btn{width:100%;max-width:420px}.done-box{display:flex;align-items:center;gap:8px;color:var(--green);background:var(--green-soft);padding:12px 18px;border-radius:14px}.done-box .link{color:var(--muted);font-weight:500;font-size:14px}.test-banner{display:flex;align-items:center;gap:14px;background:linear-gradient(135deg,#eef3ff,#fff7e8);border-color:#d6e1fb}.test-banner>svg{color:var(--amber);flex:none}.test-banner p{margin:2px 0 0;color:var(--text-2);font-size:14px}.test-banner .btn{margin-left:auto;flex:none}.day-nav{display:flex;justify-content:space-between;gap:8px;align-items:center}.locked-card{text-align:center;display:flex;flex-direction:column;align-items:center;gap:4px;padding:32px 18px;color:var(--text-2)}.locked-card p{margin:4px 0}.locked-card .btn{margin-top:10px}.page-head h1{font-size:26px;font-weight:800;display:flex;align-items:center;gap:10px}.page-head h1 svg{color:var(--primary)}.page-head p{margin:6px 0 0}.section-title{font-size:18px;margin-top:8px}.listen-pick{display:flex;flex-direction:column;gap:14px}.pick-row{display:flex;align-items:center;gap:10px}.pick-label{font-weight:700;color:var(--text-2)}select{flex:1;min-width:0;min-height:42px;border-radius:10px;border:1px solid var(--line);background:var(--surface-2);padding:6px 10px}.day-chips{display:flex;gap:6px;flex-wrap:wrap}.dchip{padding:6px 12px;border-radius:999px;border:1px solid var(--line);background:var(--surface);font-size:14px;font-weight:600;color:var(--text-2)}.dchip.on{background:var(--primary);border-color:var(--primary);color:#fff}.dchip.disabled{opacity:.4}.opts{display:grid;grid-template-columns:1fr 1fr;gap:12px 16px}.opt{display:flex;flex-direction:column;gap:6px}.opt-label{font-size:13px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.02em}.seg{display:flex;background:var(--surface-2);border:1px solid var(--line);border-radius:12px;padding:3px;gap:2px}.seg button{flex:1;border:0;background:transparent;padding:8px 10px;border-radius:9px;font-weight:600;color:var(--text-2);font-size:14px;white-space:nowrap}.seg.small button{padding:6px;font-size:13px}.seg button.on{background:var(--surface);color:var(--primary);box-shadow:0 1px 3px #0000001a}.player{display:flex;flex-direction:column;gap:12px}.player.is-playing{border-color:#c5d6fb}.player-meta{display:flex;justify-content:space-between;font-size:14px;color:var(--muted);font-weight:600}.player-text{min-height:150px;display:flex;flex-direction:column;justify-content:center;text-align:center;align-items:center}.player-text .trs{align-items:center}.player-text .tr{justify-content:center;text-align:center}.player-ctrl{display:flex;justify-content:center;align-items:center;gap:22px}.circle{width:52px;height:52px;border-radius:50%;border:1px solid var(--line);background:var(--surface);display:grid;place-items:center;color:var(--text-2)}.circle.play-main{width:72px;height:72px;background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 6px 18px #2f6fed59}.circle:disabled{opacity:.35}.pbar{height:6px;background:#e7ebf4;border-radius:999px;overflow:hidden;flex:1}.pbar>div{height:100%;background:var(--primary);border-radius:999px;transition:width .3s}.mini-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}.mini-list button{width:100%;display:flex;gap:10px;align-items:center;text-align:left;border:1px solid var(--line);background:var(--surface);border-radius:12px;padding:10px 12px}.mini-list li.on button{border-color:var(--primary);background:var(--primary-soft)}.mini-num{flex:none;width:26px;height:26px;border-radius:50%;background:var(--surface-2);display:grid;place-items:center;font-size:13px;font-weight:700;color:var(--muted)}.mini-en{font-weight:500}.test-list{display:flex;flex-direction:column;gap:10px}.test-row{display:flex;align-items:center;gap:14px;padding:14px 16px}.test-row.current{border-color:#c5d6fb;box-shadow:0 0 0 3px #2f6fed1a,var(--shadow)}.test-row.locked{background:var(--surface-2)}.tw-num{flex:none;width:42px;height:42px;border-radius:12px;background:var(--primary-soft);color:var(--primary);font-weight:800;font-size:18px;display:grid;place-items:center}.test-row.locked .tw-num{background:#eceff6;color:var(--muted)}.tw-body{display:flex;flex-direction:column;min-width:0;flex:1}.tw-theme{color:var(--text-2);font-size:14px}.tw-theme.en-sub{color:var(--muted);font-size:13px}.tw-status{display:flex;flex-direction:column;align-items:flex-end;gap:2px;flex:none}.tw-score{font-size:22px;color:var(--green);line-height:1}.tw-arrow{color:#b5bbcc;flex:none}.pill{display:inline-flex;align-items:center;gap:4px;font-size:13px;font-weight:600;padding:4px 10px;border-radius:999px;background:#eceff6;color:var(--muted);white-space:nowrap}.pill.go{background:var(--green-soft);color:var(--green)}.stars{display:inline-flex;gap:1px;color:#d5dae6}.stars .on{color:var(--amber)}.back-link{color:var(--primary);font-weight:600}.quiz-intro{text-align:center;display:flex;flex-direction:column;align-items:center;gap:10px;padding:28px 20px}.intro-icon{color:var(--primary)}.quiz-intro h1{font-size:26px}.intro-theme{margin:0;color:var(--text-2);font-weight:600}.intro-parts{list-style:none;padding:0;margin:8px 0;text-align:left;display:flex;flex-direction:column;gap:8px;max-width:520px}.intro-parts li{display:flex;gap:10px;align-items:flex-start;background:var(--surface-2);border-radius:12px;padding:10px 12px}.intro-parts svg{flex:none;margin-top:3px;color:var(--primary)}.best-line{font-weight:700;color:var(--green);margin:0}.locked-line{display:flex;align-items:center;gap:6px;color:#a35f00;background:#fff6e6;padding:8px 12px;border-radius:10px;margin:0}.quiz-top{display:flex;align-items:center;gap:12px}.quiz-count{font-weight:700;color:var(--muted);font-size:14px;white-space:nowrap}.quiz-part{margin:0;font-size:13px;font-weight:700;color:var(--primary);text-transform:uppercase;letter-spacing:.03em}.quiz-title{font-size:20px;margin-top:-8px}.q-card{display:flex;flex-direction:column;gap:16px}.listen-prompt{display:flex;justify-content:center;align-items:center;gap:16px;padding:10px 0}.big-play{width:96px;height:96px;border-radius:50%;border:0;background:var(--primary);color:#fff;display:grid;place-items:center;box-shadow:0 8px 22px #2f6fed59}.big-play.playing{animation:pulse 1s ease-in-out infinite;background:var(--primary-2)}.slow-play{width:56px;height:56px;border-radius:50%;border:1px solid #f6dcae;background:#fff6e6;color:#b06a00;display:grid;place-items:center}.slow-play.playing{background:#e08a00;color:#fff}.meaning-prompt,.fill-prompt{text-align:center}.meaning-main{font-size:22px;font-weight:700;margin:6px 0}.meaning-other{color:var(--muted);margin:0}.blank{display:inline-block;min-width:110px;border-bottom:3px solid var(--primary);background:var(--primary-soft);border-radius:6px 6px 0 0;padding:0 6px}.blank.filled{background:var(--green-soft);border-color:var(--green);color:var(--green)}.choices{display:flex;flex-direction:column;gap:10px}.choices.grid2{display:grid;grid-template-columns:1fr 1fr}.choice{display:flex;align-items:center;gap:12px;text-align:left;border:2px solid var(--line);background:var(--surface);border-radius:14px;padding:12px 14px;font-size:17px;font-weight:500;min-height:56px;transition:border-color .15s,background .15s}.choice:hover:not(:disabled){border-color:#a9bff5;background:#f7f9ff}.choice-letter{flex:none;width:28px;height:28px;border-radius:8px;background:var(--surface-2);border:1px solid var(--line);display:grid;place-items:center;font-size:13px;font-weight:800;color:var(--muted);font-family:var(--font)}.choice.right{border-color:var(--green);background:var(--green-soft)}.choice.right .choice-letter{background:var(--green);color:#fff;border-color:var(--green)}.choice.wrong{border-color:var(--red);background:var(--red-soft)}.choice.wrong .choice-letter{background:var(--red);color:#fff;border-color:var(--red)}.choice.dim{opacity:.55}.dictation{display:flex;flex-direction:column;gap:12px}textarea{width:100%;border:2px solid var(--line);border-radius:14px;padding:12px 14px;font-size:18px;resize:vertical;background:var(--surface-2)}textarea:focus{outline:none;border-color:var(--primary);background:var(--surface)}.small-label{margin:0;font-size:13px;font-weight:600}.typed{margin:0 0 8px;font-size:18px}.marked .w-ok{color:var(--green)}.marked .w-miss{color:var(--red);text-decoration:underline wavy;text-underline-offset:4px}.order{display:flex;flex-direction:column;gap:14px}.order-answer{min-height:64px;border:2px dashed #cdd5e6;border-radius:14px;padding:10px;display:flex;flex-wrap:wrap;gap:8px;align-items:center}.order-answer.ok{border-color:var(--green);background:var(--green-soft);border-style:solid}.order-answer.bad{border-color:var(--red);background:var(--red-soft);border-style:solid}.order-ph{color:#b5bbcc;padding-left:6px}.order-pool{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}.wchip{border:1px solid #cbd3e6;border-bottom-width:3px;background:var(--surface);border-radius:12px;padding:8px 14px;font-size:17px;font-weight:600}.wchip.used{visibility:hidden}.wchip.placed{background:var(--primary-soft);border-color:#b8cbf7}.feedback{display:flex;flex-direction:column;gap:4px}.feedback.ok{border-color:#a8dcc0;background:#f4fbf7}.feedback.bad{border-color:#f0b8b8;background:#fff7f7}.fb-title{display:flex;align-items:center;gap:8px;font-weight:800;font-size:18px;margin:0 0 6px}.feedback.ok .fb-title{color:var(--green)}.feedback.bad .fb-title{color:var(--red)}.fb-sentence,.review-top{display:flex;align-items:center;gap:8px}.fb-sentence .en,.review-top .en{font-size:18px;margin:0}.audio-btn:not(:has(span)){padding:6px 9px}.next-btn{margin-top:12px}.result{text-align:center;display:flex;flex-direction:column;align-items:center;gap:6px;padding:28px 20px}.trophy{color:#b5bbcc}.trophy.gold{color:var(--amber)}.score-big{font-size:64px;font-weight:800;color:var(--primary);line-height:1.1}.score-big small{font-size:20px;color:var(--muted)}.result p{margin:0}.result-msg{font-weight:600;margin:6px 0 12px!important}.review-list{display:flex;flex-direction:column;gap:10px}.review{padding:14px 16px}.given{margin:8px 0 0;font-size:14px;color:var(--red)}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.stat{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:12px;display:flex;flex-direction:column;align-items:center;text-align:center;gap:2px}.stat b{font-size:24px;line-height:1.2}.stat b small{font-size:14px;color:var(--muted)}.stat span{font-size:13px;color:var(--muted)}.flame{color:#e8730c}.blue{color:var(--primary)}.green{color:var(--green)}.week-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.week-card{display:flex;flex-direction:column;gap:6px;padding:16px}.week-card.current{border-color:#b8cbf7;box-shadow:0 0 0 3px #2f6fed1a,var(--shadow)}.week-card header{display:flex;justify-content:space-between;align-items:center}.wk-badge{font-size:13px;font-weight:800;color:var(--primary)}.wk-count{font-size:13px;color:var(--muted);font-weight:600}.week-card h3{font-size:17px}.wk-sub{margin:0;color:var(--text-2);font-size:14px}.wk-days{display:grid;grid-template-columns:repeat(8,1fr);gap:4px;margin-top:6px}.wk-day{display:flex;flex-direction:column;align-items:center;gap:1px;padding:4px 0;border-radius:9px;border:1px solid var(--line);font-size:11px;color:var(--muted);line-height:1.2;min-height:52px;justify-content:center}.wk-day .dn{font-weight:800;font-size:14px;color:var(--text)}.wk-day .dotx{width:5px;height:5px;border-radius:50%;background:#cdd3e1}.wk-day.done{background:var(--green-soft);border-color:#b8e2cb;color:var(--green)}.wk-day.locked{opacity:.5}.wk-day.is-today{border-color:var(--amber);box-shadow:inset 0 0 0 1px var(--amber)}.wk-day.test{background:var(--primary-soft);border-color:#cfdcfb;color:var(--primary)}.wk-day.test.done{background:var(--green-soft);color:var(--green)}.wk-day.test .wd{font-size:10px}.modal-bg{position:fixed;top:0;right:0;bottom:0;left:0;background:#141c3066;z-index:50;display:grid;place-items:center;padding:16px}.modal{background:var(--surface);border-radius:20px;width:100%;max-width:480px;max-height:calc(100vh - 32px);overflow:auto;padding:20px;display:flex;flex-direction:column;gap:16px;box-shadow:0 20px 60px #141c3040}.modal-head{display:flex;justify-content:space-between;align-items:center}.modal-head h2{display:flex;align-items:center;gap:8px;font-size:20px}.field{display:flex;flex-direction:column;gap:8px}.field>label{font-weight:700;font-size:14px;color:var(--text-2)}.checks{display:flex;gap:18px}.check{display:flex;align-items:center;gap:6px}.check input{width:18px;height:18px;accent-color:var(--primary)}.date-row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}input[type=date]{min-height:38px;border:1px solid var(--line);border-radius:10px;padding:4px 10px;background:var(--surface-2)}.hint{margin:0;font-size:13px;color:var(--muted)}.modal-foot{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:14px}@media(max-width:860px){.topnav{display:none}.bottomnav{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:30;background:#fffffff5;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom)}.bottomnav a{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;padding:8px 2px 6px;font-size:11.5px;font-weight:600;color:var(--muted)}.bottomnav a.on{color:var(--primary)}.app.in-quiz .bottomnav{display:none}.main{padding-bottom:calc(90px + env(safe-area-inset-bottom))}.app.in-quiz .main{padding-bottom:40px}}@media(max-width:600px){.brand-name.long{display:none}.brand-name.short{display:inline}.topbar-in{height:56px;gap:8px}.toolbar{position:static;margin:0;padding:0}.brand{font-size:15px}.brand img{width:30px;height:30px}.main{padding-top:14px}.day-head h1{font-size:23px}.card{padding:14px}.en{font-size:20px}.en.big{font-size:22px}.audio-btn{padding:6px 10px}.toolbar .btn{flex:1 1 auto;padding:8px 12px}.tr-toggles{margin-left:0}.opts,.week-grid,.choices.grid2{grid-template-columns:1fr}.test-banner{flex-wrap:wrap}.test-banner>div{flex:1;min-width:0}.test-banner .btn{width:100%}.day-nav .btn{padding:8px 10px;font-size:14px}.ws-day{padding:5px 0}.stat{padding:10px 6px}.stat span{font-size:12px}}@media(max-width:380px){.brand-name{display:none}}