:root{--paper:#f4efe4;--surface:#fbf8f0;--paper-deep:#eae3d4;--ink:#1e211d;--ink-soft:#4e5047;--muted:#716e63;--faint:#969184;--line:#ddd5c5;--line-soft:#e7e0d2;--cinnabar:#b3452b;--cinnabar-soft:#f3e2da;--jade:#2e6b56;--jade-soft:#e2ede6;--amber:#9c6f24;--amber-soft:#f3e8d2;--serif:"Source Serif Pro", "Source Serif 4", "STSong", "Songti SC", "SimSun", serif;--sans:"Noto Sans SC", "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;--mono:"Source Code Pro", "Cascadia Mono", ui-monospace, Consolas, monospace}*{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}body{background:var(--paper);color:var(--ink);font-family:var(--sans);-webkit-font-smoothing:antialiased;font-size:15px;line-height:1.7}button,input{font:inherit;color:inherit}button{cursor:pointer;touch-action:manipulation}a{color:inherit;text-decoration:none}code{font-family:var(--mono);background:var(--paper-deep);border-radius:3px;padding:1px 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11px;font-size:12px;line-height:1.55;display:flex}.match-item.is-paired{border-color:var(--jade);background:var(--jade-soft)}.match-item.is-sel{border-color:var(--cinnabar);background:var(--cinnabar-soft)}.match-num{font-family:var(--mono);color:var(--cinnabar);flex:none;font-size:9px}.recall-area{border:1px solid var(--line);background:var(--surface);resize:vertical;width:100%;min-height:180px;font-family:var(--serif);color:var(--ink);border-radius:8px;margin-top:22px;padding:14px 16px;font-size:16px;line-height:1.85}.recall-area:focus{outline:2px solid var(--cinnabar-soft);border-color:var(--cinnabar)}.recall-area:disabled{opacity:.92}.recall-tip{font-family:var(--mono);color:var(--faint);margin-top:10px;font-size:9px}.passage{color:#e9e2d2;background:#1b211d;border-radius:8px;margin-top:22px;overflow:hidden}.passage-head{font-family:var(--mono);letter-spacing:.08em;color:#9fa797;border-bottom:1px solid #e9e2d21f;justify-content:space-between;padding:9px 14px;font-size:8.5px;display:flex}.passage pre{font-family:var(--mono);margin:0;padding:16px 18px;font-size:11.5px;line-height:1.8;overflow-x:auto}.sub-q{margin-top:24px}.sub-q-head{font-family:var(--serif);align-items:baseline;gap:9px;font-size:16px;line-height:1.6;display:flex}.sub-q-head span{font-family:var(--mono);color:var(--cinnabar);font-size:9px}.recall-points{border-top:1px solid var(--line-soft);margin-top:24px}.point-row{border-bottom:1px solid var(--line-soft);font-family:var(--serif);gap:12px;padding:10px 0;font-size:16px;line-height:1.6;display:flex}.point-row span{font-family:var(--mono);color:var(--cinnabar);padding-top:4px;font-size:9px}.session-feedback{border:1px solid var(--line);background:var(--surface);border-radius:9px;margin-top:26px;padding:16px 18px}.feedback-line{color:var(--muted);flex-wrap:wrap;align-items:center;gap:9px;font-size:11.5px;display:flex}.feedback-line strong{color:var(--ink);font-weight:600}.feedback-badge{letter-spacing:.03em;border-radius:4px;align-items:center;padding:3px 8px;font-size:10px;display:inline-flex}.feedback-badge.good{color:var(--jade);background:var(--jade-soft)}.feedback-badge.partial{color:var(--amber);background:var(--amber-soft)}.feedback-badge.bad{color:var(--cinnabar);background:var(--cinnabar-soft)}.feedback-badge.self{color:var(--ink-soft);background:var(--paper-deep)}.answer-block,.reference{margin-top:12px}.ref-label{font-family:var(--mono);letter-spacing:.1em;color:var(--faint);margin-bottom:5px;font-size:8.5px}.answer-block p,.reference p{font-family:var(--serif);font-size:14.5px;line-height:1.8}.keyword-row{flex-wrap:wrap;align-items:center;gap:6px;margin-top:8px;font-size:10px;display:flex}.keyword-row em{font-style:normal;font-family:var(--mono);color:var(--faint);font-size:8.5px}.keyword-row span{border:1px solid var(--line);color:var(--muted);border-radius:4px;padding:2px 6px}.explain{border-top:1px solid var(--line-soft);color:var(--ink-soft);margin-top:12px;padding-top:10px;font-size:12px;line-height:1.75}.requeue-note{color:var(--cinnabar);margin-top:10px;font-size:10px}.feedback-error{font-family:var(--mono);color:var(--cinnabar);white-space:pre-wrap;margin-top:10px;font-size:10px}.rating-block{border-top:1px solid var(--line-soft);margin-top:16px;padding-top:14px}.rating-label{color:var(--muted);justify-content:space-between;gap:12px;font-size:10.5px;display:flex}.rating-label span:last-child{color:var(--faint);font-family:var(--mono);font-size:9px}.ratings{grid-template-columns:repeat(4,1fr);gap:7px;margin-top:9px;display:grid}.rating-btn{border:1px solid var(--line);background:var(--paper);border-radius:7px;height:42px;transition:border-color .14s,background .14s}.rating-btn:hover{border-color:var(--cinnabar);background:var(--cinnabar-soft)}.rating-btn strong{color:var(--ink-soft);font-size:11.5px;font-weight:500}.session-foot{z-index:300;background:var(--paper);border-top:1px solid var(--line);position:fixed;bottom:0;left:0;right:0;box-shadow:0 -12px 30px -24px #1e211d59}.session-foot-inner{max-width:760px;padding:11px 24px calc(11px + env(safe-area-inset-bottom));justify-content:space-between;align-items:center;gap:16px;margin:0 auto;display:flex}.session-hint{font-family:var(--mono);color:var(--faint);font-size:9px}.session-foot .btn{min-width:132px}body.has-pwa-banner .session-foot{bottom:calc(54px + env(safe-area-inset-bottom))}.summary-screen{min-height:100dvh}.summary-inner{max-width:760px;padding:46px 24px calc(60px + env(safe-area-inset-bottom));margin:0 auto}.summary-title{font-family:var(--serif);letter-spacing:-.02em;margin-top:8px;font-size:38px;font-weight:500}.summary-lede{color:var(--muted);margin-top:10px;font-size:12.5px;line-height:1.8}.summary-metrics{border-top:1px solid var(--line);border-bottom:1px solid var(--line);grid-template-columns:repeat(3,1fr);margin-top:28px;display:grid}.summary-metrics>div{border-left:1px solid var(--line-soft);padding:14px 0 12px 18px}.summary-metrics>div:first-child{border-left:none;padding-left:0}.summary-metrics span{letter-spacing:.08em;color:var(--muted);font-size:9.5px;display:block}.summary-metrics strong{font-family:var(--serif);font-size:30px;font-weight:600;line-height:1.3}.summary-metrics small{color:var(--muted);margin-left:3px;font-size:10px}.summary-ratings{color:var(--muted);gap:20px;margin-top:16px;font-size:10.5px;display:flex}.summary-ratings div{align-items:baseline;gap:5px;display:flex}.summary-ratings strong{font-family:var(--mono);color:var(--ink);font-size:11px}.summary-list{border-top:1px solid var(--line-soft);margin-top:18px}.summary-row{border-bottom:1px solid var(--line-soft);align-items:center;gap:9px;padding:10px 0;font-size:12px;display:flex}.summary-row>span{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;overflow:hidden}.summary-row em{font-style:normal;font-family:var(--mono);color:var(--faint);font-size:8.5px}.summary-row small{font-family:var(--mono);color:var(--muted);text-align:right;min-width:38px;font-size:8.5px}.summary-dot{background:var(--jade);border-radius:50%;flex:none;width:6px;height:6px}.summary-dot.again{background:var(--cinnabar)}.summary-dot.hard{background:var(--amber)}.summary-dot.good{background:var(--jade)}.summary-dot.easy{background:var(--ink-soft)}.summary-actions{flex-wrap:wrap;gap:9px;margin-top:26px;display:flex}.summary-foot{font-family:var(--mono);color:var(--faint);margin-top:18px;font-size:9px}@media (width<=720px){.today-hero{grid-template-columns:1fr;gap:18px;padding:20px 18px}.today-count strong{font-size:54px}.today-hero-side{grid-template-columns:repeat(3,1fr);gap:4px}.today-mini{text-align:left;padding-left:10px}.today-tip{flex-direction:column;gap:10px;padding:18px}.today-queue,.data-card,.diagnostics-card,.progress-card{padding:18px}.today-tip>p{max-width:none}.tabbar{padding-left:4px;padding-right:4px}.session-top{padding:calc(13px + env(safe-area-inset-top)) 16px 10px;gap:10px}.session-inner{padding:24px 18px 128px}.session-prompt{font-size:24px}.segbar{width:96px}.session-time{min-width:36px}.session-foot-inner{padding-left:18px;padding-right:18px}.session-hint{display:none}.session-foot .btn{width:100%}.summary-inner{padding:32px 18px calc(50px + env(safe-area-inset-bottom))}.summary-title{font-size:31px}.summary-metrics strong{font-size:25px}.match-grid{gap:7px}.match-item{padding:9px 8px;font-size:11px}.ratings{gap:5px}.rating-btn{height:40px}.blank-text{font-size:18px;line-height:3.1}.blank-input{width:min(158px,42vw);height:46px;font-size:18px}.topbar{padding:calc(20px + env(safe-area-inset-top)) 18px 0}.source-pill{display:none}.page{padding:38px 18px calc(64px + env(safe-area-inset-bottom))}h1{font-size:34px}.stats,.plan-counts{grid-template-columns:1fr 1fr}.plan-counts>div:nth-child(3){border-left:none;padding-left:0}.plan-counts>div:nth-child(n+3){border-top:1px solid var(--line-soft)}.plan-id{display:none}.concept-head{flex-direction:column;gap:2px}.field-row{grid-template-columns:1fr}.field input{font-size:16px}.setup-card,.error-card{padding:18px}.debug dl{grid-template-columns:1fr}.debug dt{margin-top:6px}.pwa-banner{padding-left:14px;padding-right:14px}}@media (prefers-reduced-motion:reduce){.spinner{animation:none}.btn{transition:none}}