:root{--bg: #f7f8fa;--surface: #ffffff;--surface-2: #f0f2f5;--text: #1a1d21;--text-2: #5c6470;--text-3: #9aa1ac;--border: #e4e7ec;--primary: #2563eb;--primary-soft: #eff4ff;--green: #16a34a;--amber: #d97706;--red: #dc2626;--radius: 14px;--radius-sm: 9px;--shadow: 0 1px 2px rgba(16,24,40,.05), 0 4px 14px rgba(16,24,40,.06);--shadow-lg: 0 12px 40px rgba(16,24,40,.16);--safe-b: env(safe-area-inset-bottom, 0px)}@media (prefers-color-scheme: dark){:root:not([data-theme=light]){--bg: #0f1115;--surface: #171a1f;--surface-2: #1e2228;--text: #e8eaed;--text-2: #a0a7b3;--text-3: #6b7280;--border: #272c34;--primary: #3b82f6;--primary-soft: #1a2438;--green: #22c55e;--amber: #f59e0b;--red: #ef4444;--shadow: 0 1px 2px rgba(0,0,0,.4);--shadow-lg: 0 12px 40px rgba(0,0,0,.6)}}:root[data-theme=dark]{--bg: #0f1115;--surface: #171a1f;--surface-2: #1e2228;--text: #e8eaed;--text-2: #a0a7b3;--text-3: #6b7280;--border: #272c34;--primary: #3b82f6;--primary-soft: #1a2438;--green: #22c55e;--amber: #f59e0b;--red: #ef4444;--shadow: 0 1px 2px rgba(0,0,0,.4);--shadow-lg: 0 12px 40px rgba(0,0,0,.6)}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Helvetica Neue,Arial,sans-serif;font-size:16px;line-height:1.6;overscroll-behavior-y:none}#app{max-width:560px;margin:0 auto;min-height:100dvh;padding-bottom:calc(92px + var(--safe-b));position:relative}.page{padding:20px 16px 8px;animation:fade .18s ease}@keyframes fade{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}.topbar{display:flex;align-items:center;justify-content:space-between;padding:14px 16px 6px}.topbar h1{font-size:22px;font-weight:700;margin:0;letter-spacing:-.3px}.topbar .sub{font-size:13px;color:var(--text-3);margin-top:2px}.card{background:var(--surface);border-radius:var(--radius);border:1px solid var(--border);padding:16px;box-shadow:var(--shadow)}.card+.card{margin-top:12px}button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:12px 18px;border-radius:var(--radius-sm);background:var(--primary);color:#fff;font-weight:600;font-size:15px;transition:transform .08s,opacity .15s;min-height:46px}.btn:active{transform:scale(.97)}.btn:disabled{opacity:.45}.btn.ghost{background:var(--surface-2);color:var(--text)}.btn.full{width:100%}.btn.sm{padding:8px 13px;min-height:36px;font-size:14px}.tabbar{position:fixed;bottom:0;left:0;right:0;max-width:560px;margin:0 auto;display:flex;background:color-mix(in srgb,var(--surface) 88%,transparent);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-top:1px solid var(--border);padding-bottom:var(--safe-b);z-index:50}.tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;padding:8px 0 6px;text-decoration:none;color:var(--text-3);font-size:11px;gap:2px;transition:color .15s}.tabbar a .ic{font-size:19px;line-height:1}.tabbar a.active{color:var(--primary)}.ring{position:relative;width:88px;height:88px;flex-shrink:0}.ring svg{transform:rotate(-90deg)}.ring .val{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;font-weight:700;font-size:20px}.ring .val small{font-size:10px;color:var(--text-3);font-weight:500}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.stat{text-align:center;padding:12px 6px;background:var(--surface-2);border-radius:var(--radius-sm)}.stat .n{font-size:22px;font-weight:700;letter-spacing:-.5px}.stat .l{font-size:11px;color:var(--text-3);margin-top:2px}.wordcard{background:var(--surface);border-radius:18px;border:1px solid var(--border);padding:28px 20px;text-align:center;min-height:300px;display:flex;flex-direction:column;justify-content:center;box-shadow:var(--shadow)}.wordcard .w{font-size:38px;font-weight:700;letter-spacing:-.8px;word-break:break-word}.wordcard .ipa{font-size:15px;color:var(--text-3);margin-top:6px;font-family:Lucida Sans Unicode,Arial,sans-serif}.wordcard .zh{font-size:19px;margin-top:22px;line-height:1.7}.wordcard .pos{color:var(--primary);font-weight:600}.wordcard .divider{height:1px;background:var(--border);margin:18px auto;width:60%}.spk{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;background:var(--primary-soft);color:var(--primary);font-size:18px;margin-top:10px}.spk:active{transform:scale(.92)}.rootbox{margin-top:16px;padding:12px 14px;background:var(--primary-soft);border-radius:var(--radius-sm);font-size:14px;text-align:left;line-height:1.65}.rootbox .tag{display:inline-block;font-size:11px;padding:1px 7px;border-radius:20px;background:var(--primary);color:#fff;margin-right:6px;vertical-align:1px}.examples{margin-top:14px;text-align:left}.examples .ex{padding:10px 12px;background:color-mix(in srgb,var(--primary) 4%,var(--surface));border-left:3px solid var(--primary);border-radius:0 var(--radius-sm) var(--radius-sm) 0;margin-bottom:8px;line-height:1.6}.examples .ex:last-child{margin-bottom:0}.examples .ex-en{font-size:14.5px;color:var(--text);word-break:break-word}.examples .ex-zh{font-size:13px;color:var(--text-2);margin-top:4px;word-break:break-word}.rate{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:16px}.rate button{padding:14px 8px;border-radius:var(--radius-sm);font-weight:600;font-size:15px;border:1px solid var(--border);background:var(--surface)}.rate button:active{transform:scale(.97)}.rate .forget{color:var(--red);border-color:color-mix(in srgb,var(--red) 30%,var(--border))}.rate .fuzzy{color:var(--amber);border-color:color-mix(in srgb,var(--amber) 30%,var(--border))}.rate .know{color:var(--green);border-color:color-mix(in srgb,var(--green) 30%,var(--border))}.passage{font-size:17px;line-height:1.95;color:var(--text)}.passage p{margin:0 0 14px}.passage .t{cursor:pointer;border-radius:3px;transition:background .12s;padding:1px 0}.passage .t:hover{background:var(--primary-soft)}.passage .t.known{border-bottom:1.5px solid color-mix(in srgb,var(--primary) 35%,transparent)}.passage .t.marked{background:color-mix(in srgb,var(--amber) 22%,transparent);border-radius:3px}.pzh{font-size:14px;color:var(--text-2);line-height:1.8;padding:10px 14px;margin:0 0 16px;border-left:3px solid var(--border);background:var(--surface-2);border-radius:0 8px 8px 0}.sheet-mask{position:fixed;inset:0;background:#0a0c106b;z-index:100;display:flex;align-items:flex-end;justify-content:center;animation:maskin .16s ease}@keyframes maskin{0%{opacity:0}to{opacity:1}}.sheet{width:100%;max-width:560px;background:var(--surface);border-radius:20px 20px 0 0;padding:8px 20px calc(24px + var(--safe-b));box-shadow:var(--shadow-lg);animation:sheetup .22s cubic-bezier(.2,.8,.3,1);max-height:78dvh;overflow-y:auto}@keyframes sheetup{0%{transform:translateY(100%)}to{transform:none}}.sheet .grab{width:36px;height:4px;border-radius:2px;background:var(--border);margin:6px auto 14px}.sheet .hw{font-size:27px;font-weight:700;letter-spacing:-.4px}.sheet .hi{font-size:14px;color:var(--text-3);margin-left:8px;font-family:Lucida Sans Unicode,Arial,sans-serif}.sheet .sense{margin-top:14px}.sheet .sense .p{color:var(--primary);font-weight:600;font-size:14px}.sheet .sense .d{font-size:16px;margin-top:2px}.sheet .ctx{margin-top:14px;padding:10px 13px;background:var(--primary-soft);border-radius:var(--radius-sm);font-size:14px;line-height:1.6}.sheet .warn{font-size:12px;color:var(--text-3);margin-top:10px}.sheet .acts{display:flex;gap:10px;margin-top:18px}.qblock{margin-top:8px}.qno{font-weight:700;color:var(--primary);margin-right:6px}.opts{margin-top:10px;display:flex;flex-direction:column;gap:8px}.opt{display:flex;gap:10px;padding:12px 14px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--surface);font-size:15px;text-align:left;align-items:flex-start;line-height:1.55}.opt .k{flex-shrink:0;width:22px;height:22px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:var(--surface-2);font-size:12px;font-weight:700;color:var(--text-2)}.opt.sel{border-color:var(--primary);background:var(--primary-soft)}.opt.sel .k{background:var(--primary);color:#fff}.opt.right{border-color:var(--green);background:color-mix(in srgb,var(--green) 10%,var(--surface))}.opt.right .k{background:var(--green);color:#fff}.opt.wrong{border-color:var(--red);background:color-mix(in srgb,var(--red) 9%,var(--surface))}.opt.wrong .k{background:var(--red);color:#fff}.explain{margin-top:12px;padding:12px 14px;border-radius:var(--radius-sm);background:var(--surface-2);font-size:14px;line-height:1.7}.explain .lbl{font-weight:700;margin-right:6px}.list{display:flex;flex-direction:column;gap:2px}.row{display:flex;align-items:center;gap:12px;padding:13px 4px;border-bottom:1px solid var(--border);text-decoration:none;color:inherit}.row:last-child{border-bottom:none}.row .arrow{color:var(--text-3);font-size:18px;margin-left:auto}.row .meta{font-size:12px;color:var(--text-3);margin-top:2px}.tabs{display:flex;gap:6px;overflow-x:auto;padding:4px 0 10px;scrollbar-width:none}.tabs::-webkit-scrollbar{display:none}.tabs button{flex-shrink:0;padding:7px 14px;border-radius:20px;font-size:14px;background:var(--surface-2);color:var(--text-2);white-space:nowrap}.tabs button.on{background:var(--primary);color:#fff;font-weight:600}.seg{display:flex;background:var(--surface-2);border-radius:var(--radius-sm);padding:3px}.seg button{flex:1;padding:8px 6px;border-radius:7px;font-size:13.5px;color:var(--text-2);transition:background .15s,color .15s}.seg button.on{background:var(--surface);color:var(--text);font-weight:600;box-shadow:0 1px 3px #00000014}.seg#segJump{flex-wrap:wrap;gap:4px;background:transparent;padding:0}.seg#segJump button{flex:0 1 auto;min-width:96px;padding:8px 12px;border-radius:8px;border:1px solid var(--border);background:var(--surface);font-size:13px;color:var(--text)}.seg#segJump button.on{border-color:var(--primary);background:var(--primary-soft);color:var(--primary)}.bars{display:flex;align-items:flex-end;gap:3px;height:78px}.barcol{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;gap:4px}.bar{width:100%;max-width:22px;border-radius:3px;background:var(--primary);opacity:.78}.bar.zero{background:var(--border);opacity:1}.bar.today{opacity:1}.bl{font-size:9.5px;color:var(--text-3);line-height:1;height:10px}.empty{text-align:center;padding:56px 20px;color:var(--text-3)}.empty .big{font-size:40px;margin-bottom:10px}input[type=text],input[type=number],textarea,select{width:100%;padding:12px 14px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--surface);color:var(--text);font:inherit;font-size:15px;outline:none}input:focus,textarea:focus,select:focus{border-color:var(--primary)}label.field{display:block;margin-bottom:14px}label.field span{display:block;font-size:13px;color:var(--text-2);margin-bottom:6px}.hint{font-size:12.5px;color:var(--text-3);line-height:1.6;margin-top:8px}.toast{position:fixed;left:50%;bottom:calc(84px + var(--safe-b));transform:translate(-50%);background:var(--text);color:var(--bg);padding:9px 18px;border-radius:22px;font-size:14px;z-index:200;animation:fade .18s;white-space:nowrap}.wordbank{display:flex;flex-wrap:wrap;gap:8px}.bankword{padding:6px 12px;border-radius:8px;background:var(--surface-2);font-size:14px}.pitfall{color:var(--text-2)}.pitfall span{color:var(--red)}audio{border-radius:10px}.mode-list{display:flex;flex-direction:column;gap:8px}.mode-card{display:block;width:100%;text-align:left;padding:12px 14px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--surface);font-size:15px;line-height:1.5}.mode-card.on{border-color:var(--primary);background:var(--primary-soft)}.mode-card.on>div:first-child{color:var(--primary)}.chk{flex-shrink:0;width:22px;height:22px;border-radius:50%;border:2px solid var(--border);display:inline-flex;align-items:center;justify-content:center;font-size:13px;color:#fff;font-weight:700;background:transparent;transition:all .15s}.mode-card.on .chk{background:var(--primary);border-color:var(--primary)}.pick-row{display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;padding:10px 12px;margin-bottom:8px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--surface);cursor:pointer;font-size:15px}.pick-row.on{border-color:var(--primary);background:var(--primary-soft)}.pick-row.on .chk{background:var(--primary);border-color:var(--primary)}.chip-row{display:flex;flex-wrap:wrap;gap:8px}.chip{padding:8px 16px;border-radius:999px;border:1px solid var(--border);background:var(--surface);font-size:14.5px;font-weight:600;cursor:pointer;color:var(--text);transition:all .15s;min-width:48px;text-align:center}.chip.on{border-color:var(--primary);background:var(--primary);color:#fff}.choice-opt{cursor:pointer;width:100%}.choice-opt:active{transform:scale(.99)}.choice-opt:disabled{cursor:default;opacity:1}