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var(--line-2);padding:2px 0 2px 14px}.bubble.good{border-left-color:var(--good)}.bubble.bad{border-left-color:var(--bad)}.speaker{color:var(--text-3);margin-bottom:2px;font-size:13px;font-weight:600;display:block}.bubble.good .speaker{color:var(--good)}.bubble.bad .speaker{color:var(--bad)}.bubble p{color:var(--text);font-size:16px;line-height:1.6}.stage-question{color:var(--text);font-size:16px;font-weight:600}.choice{text-align:left;border-radius:var(--radius);background:var(--surface);border:1px solid var(--line-2);width:100%;color:var(--text);align-items:flex-start;gap:12px;padding:12px 14px;font-size:15px;line-height:1.5;transition:border-color .15s,background-color .15s,opacity .15s;display:flex}@media (hover:hover){.choice.idle:hover{border-color:var(--accent);background:var(--accent-soft)}}.choice.right{border-color:var(--good);background:var(--good-soft)}.choice.wrong{border-color:var(--bad);background:var(--bad-soft)}.choice.idle-done{opacity:.55}.choice:disabled{cursor:default}.choice-key{background:var(--surface-2);border:1px solid var(--line);width:24px;height:24px;color:var(--text-2);border-radius:4px;flex:none;place-items:center;margin-top:-1px;font-size:13px;font-weight:600;display:grid}.choice.right .choice-key{background:var(--good);border-color:var(--good);color:var(--surface)}.choice.wrong .choice-key{background:var(--bad);border-color:var(--bad);color:var(--surface)}.req-grid{grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));gap:12px;display:grid}.req-grid h3,.tradeoffs h3,.block-title{margin-bottom:8px;font-size:15px}.req-list{color:var(--text-2);margin:0;padding-left:18px;font-size:15px;line-height:1.5}.req-list li{margin:4px 0}.estimates{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);grid-template-columns:repeat(auto-fill,minmax(min(100%,170px),1fr));display:grid;overflow:hidden}.estimate{border-right:1px solid var(--line);border-bottom:1px solid var(--line);margin:0 -1px -1px 0;padding:12px 14px}.estimate-label{color:var(--text-3);font-size:13px}.estimate-value{font-variant-numeric:tabular-nums;margin:2px 0;font-size:17px;font-weight:600}.estimate-math{font-family:var(--mono);color:var(--text-3);font-size:12px}.result{flex-wrap:wrap;align-items:baseline;gap:16px;display:flex}.result-score{letter-spacing:-.03em;font-variant-numeric:tabular-nums;font-size:56px;font-weight:600;line-height:1}.result-score small{color:var(--text-3);letter-spacing:0;font-size:28px;font-weight:500}.filters{flex-direction:column;gap:20px;display:flex}.filter-group h2{margin-bottom:8px;font-size:15px}.deck-summary{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;margin-top:24px;padding:16px;display:flex}.deck-counts{flex-wrap:wrap;gap:24px;display:flex}.deck-count strong{font-variant-numeric:tabular-nums;font-size:24px;font-weight:600;display:block}.deck-count span{color:var(--text-3);font-size:14px}.deck-count.due strong{color:var(--accent)}.session{max-width:720px}.session-head{align-items:center;gap:12px;margin-bottom:16px;display:flex}.flash-stage{perspective:1400px;touch-action:pan-y;position:relative}.flash-card{height:clamp(320px,52dvh,480px);transform-style:preserve-3d;cursor:pointer;position:relative}.app[data-layout=phone-land] .flash-card{height:calc(100dvh - var(--sat) - var(--sab) - 150px);min-height:240px}.flash-face{backface-visibility:hidden;border:1px solid var(--line-2);background:var(--surface);box-shadow:var(--shadow);border-radius:12px;flex-direction:column;justify-content:space-between;gap:16px;padding:24px;display:flex;position:absolute;inset:0;overflow:auto}.flash-face.back{transform:rotateY(180deg)}.flash-prompt{color:var(--text);font-size:22px;font-weight:500;line-height:1.4}.flash-answer{color:var(--text);font-size:20px;font-weight:600;line-height:1.4}.swipe-hint{border-radius:var(--radius-sm);background:var(--surface);pointer-events:none;z-index:3;padding:4px 10px;font-size:14px;font-weight:600;position:absolute;top:16px;transform:translateZ(40px)}.swipe-hint.good{color:var(--good);border:2px solid var(--good);right:16px}.swipe-hint.bad{color:var(--bad);border:2px solid var(--bad);left:16px}.answer-row{justify-content:center;gap:8px;display:flex}.answer-row .btn{flex:1;max-width:220px}.answer-good{color:var(--good);border-color:var(--good)}.answer-bad{color:var(--bad);border-color:var(--bad)}.quiz-q{padding:20px}.quiz-prompt{color:var(--text);font-size:20px;font-weight:500;line-height:1.45}.explain{border-radius:var(--radius);border:1px solid var(--line);padding:12px 16px}.explain.good{background:var(--good-soft);border-color:var(--good)}.explain.bad{background:var(--bad-soft);border-color:var(--bad)}.explain h3{margin-bottom:4px;font-size:15px}.explain.good h3{color:var(--good)}.explain.bad h3{color:var(--bad)}.explain p{color:var(--text);font-size:15px}.kbd-hint{color:var(--text-3);font-size:13px}.app[data-layout=open-land] .quiz-card,.app[data-layout=desktop] .quiz-card{grid-template-columns:1fr 1fr;align-items:start;gap:32px;display:grid}.app[data-layout=open-land] .session,.app[data-layout=desktop] .session{max-width:1100px}.app[data-layout=open-land] .quiz-choices,.app[data-layout=desktop] .quiz-choices{grid-area:1/2/span 2}.app[data-layout=open-land] .quiz-after,.app[data-layout=desktop] .quiz-after{grid-area:2/1}.app[data-layout=open-land] .flash-wrap,.app[data-layout=desktop] .flash-wrap{max-width:640px;margin:0 auto}.stats{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);grid-template-columns:repeat(4,1fr);margin-bottom:32px;display:grid}.stat{border-left:1px solid var(--line);padding:12px 16px}.stat:first-child{border-left:0}.stat strong{font-variant-numeric:tabular-nums;font-size:24px;font-weight:600;line-height:1.2;display:block}.stat span{color:var(--text-3);font-size:14px}.app[data-layout=phone] .stats{grid-template-columns:repeat(2,1fr)}.app[data-layout=phone] .stat:nth-child(3){border-left:0}.app[data-layout=phone] .stat:nth-child(n+3){border-top:1px solid var(--line)}.home-grid{gap:32px;display:grid}.app[data-layout=open-land] .home-grid,.app[data-layout=desktop] .home-grid,.app[data-layout=phone-land] .home-grid{grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);align-items:start}.home-grid h2{margin-bottom:12px}.list{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);overflow:hidden}.list-item{border-top:1px solid var(--line);align-items:center;gap:12px;padding:12px 16px;transition:background-color .15s;display:flex}.list-item:first-child{border-top:0}@media (hover:hover){a.list-item:hover{background:var(--surface-2)}}.list-item .grow{flex:1;min-width:0}.list-item p{-webkit-line-clamp:2;-webkit-box-orient:vertical;font-size:14px;display:-webkit-box;overflow:hidden}.list-item>svg{color:var(--text-3);flex:none}.list-item.primary h3{color:var(--accent)}.mastery-row{grid-template-columns:minmax(120px,.9fr) 2fr 44px;align-items:center;gap:12px;padding:8px 16px;display:grid}.mastery-row span:first-child{font-size:14px;font-weight:500}.mastery-row .pct{color:var(--text-3);text-align:right;font-variant-numeric:tabular-nums;font-size:13px}.mastery-bar{background:var(--surface-3);border-radius:3px;height:6px;position:relative;overflow:hidden}.mastery-bar>div{position:absolute;top:0;bottom:0;left:0}.mastery-bar .seen{background:var(--line-2)}.mastery-bar .known{background:var(--accent)}.mastery-key{color:var(--text-3);border-top:1px solid var(--line);gap:16px;padding:10px 16px;font-size:13px;display:flex}.mastery-key i{vertical-align:-1px;border-radius:2px;width:10px;height:10px;margin-right:6px;display:inline-block}.path{counter-reset:none;margin:0;padding:0;list-style:none}.path-scroll{scrollbar-width:thin;max-height:min(78dvh,900px);overflow-y:auto}.app[data-layout=phone] .path-scroll,.app[data-layout=open-port] .path-scroll{max-height:none}.path li+li .list-item{border-top:1px solid var(--line)}.path .list-item{gap:12px;padding:10px 16px}.path-num{width:26px;height:26px;color:var(--text-3);border:1px solid var(--line-2);font-variant-numeric:tabular-nums;border-radius:50%;flex:none;place-items:center;font-size:13px;font-weight:600;display:grid}.path-item.done .path-num{background:var(--good);border-color:var(--good);color:var(--surface)}.path-item.next .path-num{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}.path-title{min-width:0;color:var(--text-2);flex:1;font-size:15px}.path-item.next .path-title{color:var(--text);font-weight:600}.path-item.done .path-title{color:var(--text)}.path-score{color:var(--text-3);font-variant-numeric:tabular-nums;font-size:13px}.level-section+.level-section{margin-top:40px}.level-section>p{max-width:64ch;margin:-4px 0 16px;font-size:15px}.scenario-card{height:100%;padding:0;display:block;overflow:hidden}.scenario-thumb{pointer-events:none;height:160px}.scenario-thumb .diagram-wrap{border:0;border-bottom:1px solid var(--line);border-radius:0;min-height:0}.scenario-body{flex-direction:column;gap:4px;padding:12px 16px 16px;display:flex}.scenario-body p{font-size:14px}.scenario-meta{color:var(--text-3);justify-content:space-between;gap:8px;font-size:13px;display:flex}.scenario-meta .done{color:var(--good);align-items:center;gap:4px;font-weight:600;display:inline-flex}.wiki-controls{flex-direction:column;gap:12px;margin-bottom:32px;display:flex}.wiki-groups>section+section{margin-top:32px}.wiki-groups h2{margin-bottom:12px;font-size:18px}.concept-card{flex-direction:column;gap:6px;height:100%;display:flex}.concept-card p{font-size:14px}.concept-meta{color:var(--text-3);justify-content:space-between;align-items:center;gap:8px;font-size:13px;display:flex}.concept-meta .read{color:var(--good);align-items:center;gap:4px;font-weight:600;display:inline-flex}.wiki-head{flex-direction:column;gap:8px;margin-bottom:24px;display:flex}.wiki-visual{min-width:0}.app[data-layout=open-land] .wiki-visual,.app[data-layout=desktop] .wiki-visual{align-self:start;position:sticky;top:68px}.app[data-layout=desktop] .wiki-visual{top:32px}.app[data-layout=phone-land] .wiki-split{grid-template-columns:1fr}.wiki-body{min-width:0}.tradeoffs{grid-template-columns:repeat(auto-fit,minmax(min(100%,230px),1fr));gap:12px;display:grid}.tradeoffs .pro h3{color:var(--good)}.tradeoffs .con h3{color:var(--bad)}.numbers{margin:0;padding:0;list-style:none}.numbers li{color:var(--text);border-top:1px solid var(--line);font-variant-numeric:tabular-nums;padding:8px 0;font-size:14px}.numbers li:first-child{border-top:0;padding-top:0}.wiki-nav{border-top:1px solid var(--line);justify-content:space-between;gap:12px;margin-top:8px;padding-top:16px;display:flex}.wiki-nav a{max-width:48%;color:var(--accent);flex-direction:column;gap:2px;font-size:15px;font-weight:500;display:flex}.wiki-nav a span{color:var(--text-3);font-size:13px;font-weight:400}.wiki-nav a.next{text-align:right;margin-left:auto}.anim-frame,.step-player{border-radius:var(--radius);border:1px solid var(--line);background:var(--board);overflow:hidden}.anim{flex-direction:column;display:flex;position:relative}.anim-svg{aspect-ratio:800/480;width:100%;font-family:var(--font);display:block}.app[data-layout=phone-land] .anim-svg{max-height:calc(100dvh - 160px)}.anim-loading{aspect-ratio:800/560}.anim-caption,.step-caption{border-top:1px solid var(--line);background:var(--surface);min-height:72px;padding:12px 16px}.anim-caption p,.step-caption p{color:var(--text);font-size:15px;line-height:1.5}.anim-legend{color:var(--text-2);flex-wrap:wrap;gap:12px;font-size:12px;display:flex;position:absolute;top:12px;left:14px}.anim-legend span{align-items:center;gap:5px;display:inline-flex}.anim-legend i{border-radius:2px;width:10px;height:10px;display:inline-block}.step-stage{height:clamp(240px,42dvh,440px)}.step-stage .diagram-wrap{border:0;border-radius:0}.step-controls{border-top:1px solid var(--line);background:var(--surface);align-items:flex-start;gap:12px;padding:12px 14px 0;display:flex}.step-controls .step-caption{border:0;flex:1;min-height:64px;padding:2px 0 0}.step-count{color:var(--text-3);font-variant-numeric:tabular-nums;margin-right:8px;font-weight:600}.step-dots{background:var(--surface);gap:6px;padding:0 14px 14px;display:flex}.step-dots button{flex:1;padding:6px 0}.step-track{background:var(--surface-3);border-radius:2px;height:4px;display:block;overflow:hidden}.step-fill{background:var(--accent);height:100%;display:block}.settings-section{flex-direction:column;gap:12px;padding:20px;display:flex}.settings-section p{font-size:15px}.sync-code{border-radius:var(--radius);background:var(--surface-2);border:1px solid var(--line);color:var(--text);padding:7px 12px;font-size:16px}.sync-status{color:var(--text-3);align-items:center;gap:6px;font-size:14px;display:inline-flex}.sync-dot{background:var(--text-3);border-radius:50%;width:8px;height:8px}.sync-dot.ok{background:var(--good)}.sync-dot.syncing{background:var(--warn)}.sync-dot.offline{background:var(--bad)}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}.diagram-flag.good{animation:none!important}}