:root{--bg: #0f1117;--surface: #191d27;--surface-2: #222839;--line: #2c3348;--text: #eef1f7;--muted: #98a2b8;--accent: #7c8cff;--on-accent: #0e1020;--right: #34d399;--on-right: #06281c;--wrong: #f87171;--on-wrong: #3a0d0d;--knob: #eef1f7;--code-bg: #0b0d14;--code-text: #c8d2ea;--backdrop: #0009;--radius: 18px;--pad: 20px;color-scheme:dark}:root[data-theme=light]{--bg: #f4f5f9;--surface: #ffffff;--surface-2: #eceef5;--line: #d8dce7;--text: #161a24;--muted: #5b6477;--accent: #4f5bd5;--on-accent: #ffffff;--right: #0b8457;--on-right: #ffffff;--wrong: #cf3131;--on-wrong: #ffffff;--knob: #ffffff;--code-bg: #f0f2f8;--code-text: #283150;--backdrop: #161a2459;color-scheme:light}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.45 -apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica 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var(--accent);outline-offset:1px}.scroll-page{flex:1;min-height:0;overflow-y:auto;display:flex;flex-direction:column;gap:14px;-webkit-overflow-scrolling:touch}.scroll-page section{display:flex;flex-direction:column;gap:8px}.scroll-page>:last-child{margin-bottom:4px}.deck-list{display:flex;flex-direction:column;gap:10px;list-style:none;margin:0;padding:0}.deck-row{display:flex;align-items:stretch;gap:6px}.deck-row .btn{display:flex;flex-direction:column;gap:3px;min-width:0}.deck-row .deck-name{font-weight:600;font-size:17px;overflow-wrap:anywhere}.deck-row .icon-btn.more{font-size:20px;padding:8px 10px}.deck-row .btn.folder{flex-direction:row;align-items:center;gap:12px}.folder-icon{flex:none;width:22px;height:18px;color:var(--accent)}.folder-text{flex:1;min-width:0;display:flex;flex-direction:column;gap:3px}.chevron{flex:none;color:var(--muted);font-size:20px;line-height:1}.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:0 2px;font-size:13px;color:var(--muted);margin-top:-10px}.crumbs button{background:none;border:0;cursor:pointer;color:var(--accent);padding:3px 4px;border-radius:6px;font-size:13px}.crumbs .sep{opacity:.5;padding:0 1px}.crumbs .here{padding:3px 4px;color:var(--text)}.archive-link{display:flex;align-items:center;gap:10px}.archive-link .grow{flex:1}.archive-group-head{display:flex;align-items:center;gap:8px;justify-content:space-between}.archive-row{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:10px 8px 10px 14px;display:flex;align-items:center;gap:4px}.archive-row .info{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px}.dropzone{border:1.5px dashed var(--line);border-radius:var(--radius);padding:26px 18px;text-align:center;color:var(--muted);transition:border-color .15s ease,background .15s ease}.dropzone.over{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 8%,transparent);color:var(--text)}.dropzone h2{margin:0 0 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var(--line);border-radius:var(--radius);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:24px;gap:14px;overflow:hidden}.face.back{transform:rotateY(180deg);background:var(--surface-2)}.face-label{position:absolute;top:14px;left:16px;font-size:11px;letter-spacing:.09em;text-transform:uppercase;color:var(--muted)}.card-text{font-size:clamp(22px,6vw,30px);font-weight:600;text-align:center;line-height:1.25;letter-spacing:-.01em;white-space:pre-line}.card-text.long{font-size:clamp(17px,4.4vw,21px);font-weight:500}.card-image{max-height:62%;max-width:100%;min-height:0;flex:1 1 auto;object-fit:contain;border-radius:10px}.card-text.caption{font-size:clamp(16px,4.2vw,19px);font-weight:500;color:var(--muted);flex:none}.card-image-missing{font-size:12px;color:var(--muted);border:1px dashed var(--line);border-radius:10px;padding:14px 16px;text-align:center}.verdict-tag{position:absolute;top:18px;padding:6px 12px;border-radius:999px;font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;border:2px solid currentColor;opacity:0;pointer-events:none}.verdict-tag.knew{right:18px;color:var(--right)}.verdict-tag.missed{left:18px;color:var(--wrong)}.controls{display:flex;gap:10px;padding-top:14px}.controls .btn{flex:1;width:auto;text-align:center;font-weight:600;padding:16px 10px}.btn-know{border-color:color-mix(in srgb,var(--right) 35%,transparent);background:color-mix(in srgb,var(--right) 10%,transparent);color:var(--right)}.btn-dont{border-color:color-mix(in srgb,var(--wrong) 35%,transparent);background:color-mix(in srgb,var(--wrong) 10%,transparent);color:var(--wrong)}.hint{text-align:center;font-size:12px;color:var(--muted);padding-top:10px;min-height:18px}.mcq{flex:1;display:flex;flex-direction:column;min-height:0;gap:14px}.mcq .prompt{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);flex:1;min-height:120px;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:24px;gap:14px;position:relative;overflow:hidden}.pick-badge{position:absolute;top:12px;right:14px;font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);border:1.5px solid currentColor;border-radius:999px;padding:3px 9px}.options{display:flex;flex-direction:column;gap:8px}.option{display:flex;align-items:center;gap:12px;border:1px solid var(--line);background:var(--surface-2);border-radius:14px;padding:14px 16px;cursor:pointer;text-align:left;transition:transform .1s ease,background .15s ease,border-color .15s ease}.option:active{transform:scale(.99)}.option .key{flex:none;width:22px;height:22px;border-radius:6px;background:var(--line);font-size:11px;display:grid;place-items:center;color:var(--muted)}.option.picked{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 14%,transparent)}.option.picked .key{background:var(--accent);color:var(--on-accent)}.option.correct{border-color:var(--right);background:color-mix(in srgb,var(--right) 15%,transparent)}.option.correct .key{background:var(--right);color:var(--on-right)}.option.correct.unpicked{border-style:dashed;background:transparent}.option.correct.unpicked .key{background:transparent;color:var(--right);box-shadow:inset 0 0 0 1.5px var(--right)}.option.chosen-wrong{border-color:var(--wrong);background:color-mix(in srgb,var(--wrong) 15%,transparent)}.option.chosen-wrong .key{background:var(--wrong);color:var(--on-wrong)}.option.dimmed{opacity:.45}.options.answered .option{cursor:default}.summary{flex:1;display:flex;flex-direction:column;min-height:0;gap:16px}.score{text-align:center;padding:18px 0 4px}.score .big{font-size:56px;font-weight:700;letter-spacing:-.03em;font-variant-numeric:tabular-nums}.score .big .of{color:var(--muted);font-weight:600}.score .pct{color:var(--muted);font-size:14px;margin-top:2px}.missed-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px;overflow-y:auto;flex:1;min-height:0}.missed-item{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px 14px;display:flex;flex-direction:column;gap:3px}.missed-item .q{font-weight:600}.missed-item .a{color:var(--right);font-size:14px;white-space:pre-line}.missed-item .picked{color:var(--muted);font-size:12px}.missed-item img{max-height:64px;align-self:flex-start;border-radius:6px;margin-bottom:4px}.section-title{font-size:13px;color:var(--muted);text-transform:uppercase;letter-spacing:.07em}.actions{display:flex;flex-direction:column;gap:8px;padding-top:4px}.sheet-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:var(--backdrop);-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);display:flex;align-items:flex-end;justify-content:center;z-index:10;animation:fade .15s ease}.sheet{background:var(--bg);border:1px solid var(--line);border-bottom:0;border-radius:20px 20px 0 0;padding:18px var(--pad) max(20px,env(safe-area-inset-bottom));width:100%;max-width:480px;max-height:92vh;overflow-y:auto;display:flex;flex-direction:column;gap:10px;animation:rise .2s cubic-bezier(.2,.8,.3,1)}.sheet h2{margin:0;font-size:19px;overflow-wrap:anywhere}.sheet-sub{margin:-4px 0 4px}.mode-btn{display:flex;flex-direction:column;gap:3px}.mode-btn .mode-name{font-weight:600}.mode-btn.danger .mode-name{color:var(--wrong)}.chips{display:flex;gap:8px;flex-wrap:wrap}.chip{border:1px solid var(--line);background:var(--surface-2);border-radius:999px;padding:7px 14px;font-size:14px;cursor:pointer}.chip.on{background:var(--accent);border-color:var(--accent);color:var(--on-accent);font-weight:600}.dest-list{list-style:none;margin:0;padding:4px;display:flex;flex-direction:column;gap:2px;max-height:40vh;overflow-y:auto;border:1px solid var(--line);border-radius:14px;background:var(--surface)}.dest{width:100%;display:flex;align-items:center;gap:8px;text-align:left;background:none;border:1px solid transparent;border-radius:10px;padding:9px 10px;cursor:pointer;font-size:15px}.dest:hover{background:var(--surface-2)}.dest.on{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 12%,transparent)}.dest .folder-icon{width:18px;height:15px}.dest .dest-name{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.dest .here-tag{margin-left:auto;flex:none;font-size:12px;color:var(--muted)}@keyframes fade{0%{opacity:0}to{opacity:1}}@keyframes rise{0%{transform:translateY(16px)}to{transform:none}}@media(prefers-reduced-motion:reduce){*{animation-duration:.01ms!important;transition-duration:.01ms!important}}.tabbar{display:flex;gap:4px;flex:none;padding-top:8px;margin-top:4px;border-top:1px solid var(--line)}.tab{flex:1;background:none;border:0;cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:3px;padding:7px 4px;border-radius:10px;font-size:11px;color:var(--muted);transition:color .15s ease,background .15s ease}.tab:hover{color:var(--text)}.tab.on{color:var(--accent);background:color-mix(in srgb,var(--accent) 8%,transparent)}.tab-icon{font-size:15px;line-height:1}.tiles{display:flex;gap:8px}.tile{flex:1;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:14px 12px;text-align:center}.tile-value{font-size:26px;font-weight:700;letter-spacing:-.02em;font-variant-numeric:tabular-nums}.tile-label{font-size:11px;color:var(--muted);margin-top:2px}.activity{display:flex;align-items:flex-end;gap:4px;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px}.activity-bar{flex:1;align-self:flex-end;background:var(--accent);border-radius:3px}.activity-scale{display:flex;justify-content:space-between;font-size:11px;color:var(--muted);padding:0 2px}.activity-bar.idle{background:var(--line)}.plain-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}.stat-row{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px 14px;display:flex;flex-direction:column;gap:5px}.stat-head{display:flex;align-items:baseline;gap:10px}.stat-name{font-weight:600;flex:1}.stat-score{font-variant-numeric:tabular-nums;font-weight:700}.btn-small{padding:9px 12px;font-size:13px;text-align:center;margin-top:3px}.history-row{background:var(--surface);border:1px solid var(--line);border-radius:12px;overflow:hidden}.history-head{width:100%;background:none;border:0;cursor:pointer;display:flex;align-items:center;gap:12px;padding:12px 14px;text-align:left}.history-main{flex:1;display:flex;flex-direction:column;gap:2px;min-width:0}.history-score{font-size:19px;font-weight:700;font-variant-numeric:tabular-nums}.history-score .of{color:var(--muted);font-size:14px;font-weight:600}.history-detail{padding:12px 14px 14px;display:flex;flex-direction:column;gap:10px;border-top:1px solid var(--line)}.missed-list.compact{overflow:visible;flex:none}.missed-list.compact .missed-item{padding:9px 11px}.code{background:var(--code-bg);border:1px solid var(--line);border-radius:12px;padding:12px 14px;margin:0;overflow-x:auto;font-size:12.5px;line-height:1.55;color:var(--code-text);font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}.scroll-page code{background:var(--surface-2);border-radius:5px;padding:1px 5px;font-size:12.5px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}.download-list{display:flex;flex-direction:column;gap:8px;margin:0 14px 12px}.download-list .btn{display:flex;flex-direction:column;gap:3px;text-decoration:none;color:inherit}.icon-btn.small{font-size:13px;padding:6px 10px}.choice-list{display:flex;flex-direction:column;gap:8px}.choice{display:flex;flex-direction:column;gap:3px}.choice.on{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 12%,transparent)}.choice.on .mode-name{color:var(--accent)}.about{display:flex;flex-direction:column;gap:6px}.about details{background:var(--surface);border:1px solid var(--line);border-radius:12px}.about summary{cursor:pointer;padding:12px 14px;font-weight:600;font-size:14px;list-style:none;display:flex;align-items:center;gap:8px}.about summary::-webkit-details-marker{display:none}.about summary:before{content:"▸";color:var(--muted);font-size:11px;transition:transform .15s ease}.about details[open] summary:before{transform:rotate(90deg)}.about details p{margin:0 14px 12px;font-size:13px;line-height:1.55;color:var(--muted)}.about details p+p{margin-top:-4px}.about details strong,.about details em{color:var(--text);font-style:normal}.about details em{font-weight:600}.about details pre.code{margin:0 14px 12px}.prompt-card{margin:0 14px 12px;display:flex;flex-direction:column;gap:8px}.about .prompt-card pre.code{margin:0;white-space:pre-wrap;overflow-wrap:anywhere;max-height:340px;overflow-y:auto}.about .prompt-card p{margin:0}.plan{background:var(--surface-2);border:1px solid var(--line);border-radius:12px;padding:10px 12px;font-size:13px}.plan strong{font-weight:600}.plan .small{display:block;color:var(--muted);margin-top:2px}.major{font-size:13px;letter-spacing:.09em;text-transform:uppercase;color:var(--text);margin:8px 0 -4px;font-weight:700}.major:first-of-type{margin-top:0}.switch-row{display:flex;align-items:center;gap:14px}.switch-text{flex:1;display:flex;flex-direction:column;gap:3px}.switch{flex:none;width:42px;height:25px;border-radius:999px;background:var(--line);position:relative;transition:background .15s 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