:root{color-scheme:light dark;--brand: #0a84ff;--brand-strong: #007aff;--brand-soft: #e4f1ff;--accent: #ff9500;--bg: #f2f2f7;--surface: #ffffff;--surface-2: #f8f8fa;--text: #1c1c1e;--text-secondary: #6e6e73;--border: rgba(60, 60, 67, .18);--danger: #ff3b30;--warning: #ff9500;--ok: #34c759;--hairline: rgba(60, 60, 67, .12);--safe-bottom: env(safe-area-inset-bottom, 0px);--safe-top: env(safe-area-inset-top, 0px);--nav-h: 62px;--tap: 48px;font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;line-height:1.45;font-size:16px;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}@media(prefers-color-scheme:dark){:root{--bg: #000000;--surface: #1c1c1e;--surface-2: #242426;--text: #ffffff;--text-secondary: #98989d;--border: rgba(255, 255, 255, .16);--hairline: rgba(255, 255, 255, .12);--brand: #0a84ff;--brand-strong: #409cff;--brand-soft: #16344f;--accent: #ff9f0a}}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100%;height:100%}body{overscroll-behavior:none;-webkit-tap-highlight-color:transparent;-webkit-text-size-adjust:100%;text-size-adjust:100%}button,input,select,textarea{font:inherit}button{min-height:var(--tap);border-radius:14px;border:1px solid transparent;background:var(--brand);color:#fff;padding:0 14px;cursor:pointer;font-weight:500;transition:opacity .15s ease}button:active:not(:disabled){opacity:.75}button.secondary{background:var(--surface);color:var(--brand);border-color:var(--border)}button.ghost{background:transparent;color:var(--brand);border-color:transparent}button:disabled{opacity:.4;cursor:not-allowed}input[type=text],input[type=search],input[type=password],input[type=number]{min-height:var(--tap);width:100%;border-radius:14px;border:1px solid var(--border);background:var(--surface-2);color:var(--text);padding:0 12px;-webkit-appearance:none;appearance:none}input[type=range]{-webkit-appearance:none;appearance:none;height:4px;border-radius:999px;background:var(--border);outline:none}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:26px;height:26px;border-radius:50%;background:#fff;border:1px solid rgba(0,0,0,.1);box-shadow:0 2px 8px #0003}input[type=checkbox]{width:20px;height:20px;accent-color:var(--brand)}.app-shell{min-height:100%;display:flex;flex-direction:column;padding-top:var(--safe-top);padding-bottom:calc(var(--nav-h) + var(--safe-bottom))}.app-shell.no-nav{padding-bottom:var(--safe-bottom)}.icp-footer{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;font-size:.7rem;color:var(--text-secondary);padding:10px 12px 6px}.app-shell:not(.no-nav) .icp-footer{margin-bottom:calc(var(--nav-h) + var(--safe-bottom))}.icp-footer a{color:inherit;text-decoration:none}.topbar{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;gap:8px;min-height:52px;padding:8px 16px;background:#f2f2f7d1;backdrop-filter:blur(20px) saturate(180%);-webkit-backdrop-filter:blur(20px) saturate(180%);border-bottom:.5px solid var(--hairline)}@media(prefers-color-scheme:dark){.topbar{background:#000000b8}}.topbar h1{margin:0;font-size:1.0625rem;font-weight:700;letter-spacing:.01em}.page{flex:1;padding:12px 16px 20px;overflow:auto}.bottom-nav{position:fixed;left:0;right:0;bottom:0;height:calc(var(--nav-h) + var(--safe-bottom));padding-bottom:var(--safe-bottom);display:grid;grid-template-columns:repeat(3,1fr);background:#f9f9fbd9;backdrop-filter:blur(20px) saturate(180%);-webkit-backdrop-filter:blur(20px) saturate(180%);border-top:.5px solid var(--hairline);z-index:20}@media(prefers-color-scheme:dark){.bottom-nav{background:#161618d1}}.bottom-nav a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;text-decoration:none;color:var(--text-secondary);font-size:.72rem;min-height:var(--nav-h);transition:color .15s ease}.bottom-nav a.active{color:var(--brand);font-weight:600}.card{background:var(--surface);border-radius:18px;padding:16px;box-shadow:0 1px 2px #0000000a,0 8px 24px #0000000d}@media(prefers-color-scheme:dark){.card{box-shadow:0 1px 2px #0006,0 8px 24px #0000004d}}.row{display:flex;gap:10px;align-items:center}.stack{display:flex;flex-direction:column;gap:12px}.muted{color:var(--text-secondary);font-size:.875rem}.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.stat{text-align:center;padding:12px 8px;background:var(--surface);border-radius:14px;box-shadow:0 1px 2px #0000000a}.stat strong{display:block;font-size:1.35rem}.list-item{display:flex;gap:12px;align-items:center;padding:14px 16px;background:var(--surface);border-radius:18px;box-shadow:0 1px 2px #0000000a,0 6px 20px #0000000a}.list-item .grow{flex:1;min-width:0}.progress-bar{height:8px;background:var(--surface-2);border:.5px solid var(--hairline);border-radius:999px;overflow:hidden}.progress-bar>span{display:block;height:100%;background:var(--brand)}.banner{padding:12px 14px;border-radius:14px;background:var(--surface);box-shadow:0 1px 2px #0000000a}.error-box{padding:14px;border-radius:14px;background:color-mix(in srgb,var(--danger) 10%,var(--surface));color:var(--danger);border:.5px solid color-mix(in srgb,var(--danger) 30%,transparent)}.icon-btn{width:var(--tap);min-width:var(--tap);padding:0;background:transparent;color:var(--brand);border:none;font-size:1.1rem}.prompt{font-size:1.6rem;font-weight:700;text-align:center;margin:20px 0;word-break:break-word}.chip{display:inline-block;padding:4px 10px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-size:.78rem;font-weight:600}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:8px}.grid-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px}.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:6px}.segmented{display:flex;background:var(--surface-2);border-radius:12px;padding:3px;gap:2px}.segmented button{flex:1;min-height:38px;border-radius:10px;background:transparent;color:var(--text-secondary);font-size:.875rem;font-weight:500}.segmented button.active{background:var(--surface);color:var(--text);box-shadow:0 1px 4px #0000001f}.stepper{display:inline-flex;align-items:center;gap:10px}.stepper button{min-height:36px;width:36px;padding:0;border-radius:10px;font-size:1.1rem}.stepper-value{min-width:28px;text-align:center;font-weight:600;font-variant-numeric:tabular-nums}@media(orientation:landscape)and (max-height:480px){:root{--nav-h: 52px}.bottom-nav a{flex-direction:row;gap:6px}.topbar{min-height:44px}}.prompt{font-size:clamp(1.4rem,6vw,2rem)}.topbar h1{font-size:clamp(1rem,3.5vw,1.25rem)}@media(min-width:700px){.page{max-width:720px;margin:0 auto;width:100%}}.article-player-bar{position:fixed;bottom:0;left:0;right:0;background:#f9f9fbd9;backdrop-filter:blur(20px) saturate(180%);-webkit-backdrop-filter:blur(20px) saturate(180%);border-top:.5px solid var(--hairline);padding:10px 16px calc(10px + var(--safe-bottom));z-index:20;box-shadow:0 -2px 12px #0000000f}@media(prefers-color-scheme:dark){.article-player-bar{background:#161618d1}}.article-player-bar input[type=range]{width:100%;margin:6px 0}.paragraph-active{background:var(--brand-soft);font-weight:600}