@font-face{font-family:Open Sans;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/open-sans-latin-400-normal-Bk63H6sG.woff2) format("woff2"),url(/assets/open-sans-latin-400-normal-DKniycaP.woff) format("woff")}@font-face{font-family:Open Sans;font-style:normal;font-display:swap;font-weight:600;src:url(/assets/open-sans-latin-600-normal-Cp4N6AwT.woff2) format("woff2"),url(/assets/open-sans-latin-600-normal-C3dWW5mx.woff) format("woff")}@font-face{font-family:Open Sans;font-style:normal;font-display:swap;font-weight:700;src:url(/assets/open-sans-latin-700-normal-CceUhp2e.woff2) format("woff2"),url(/assets/open-sans-latin-700-normal-CZCQA30i.woff) format("woff")}@font-face{font-family:Ubuntu Mono;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/ubuntu-mono-latin-400-normal-l4cqI2xd.woff2) format("woff2"),url(/assets/ubuntu-mono-latin-400-normal-DpWeehTz.woff) format("woff")}@font-face{font-family:Ubuntu Mono;font-style:normal;font-display:swap;font-weight:700;src:url(/assets/ubuntu-mono-latin-700-normal-nUYOZNIl.woff2) format("woff2"),url(/assets/ubuntu-mono-latin-700-normal-g9eDMPsO.woff) format("woff")}:root{--bg-primary: #303230;--bg-secondary: #363836;--bg-elevated: #3b3d3b;--bg-hover: #404240;--border: #464946;--border-strong: #5b5f5b;--text-primary: #d8dad7;--text-secondary: #afb2ae;--text-dim: #81857f;--text-bright: #f1f2ef;--accent: #d9b64c;--accent-hover: #e5c45d;--accent-dim: rgba(217, 182, 76, .13);--success: #7ecf82;--success-dim: rgba(126, 207, 130, .14);--error: #f06292;--error-dim: rgba(240, 98, 146, .14);--warning: #ffb74d;--warning-dim: rgba(255, 183, 77, .14);--brand-primary: var(--accent);--primary-color: var(--accent);--border-color: var(--border);--brand-danger: var(--error);--font-ui: "Open Sans", Arial, sans-serif;--font-mono: "Ubuntu Mono", "SFMono-Regular", Consolas, monospace;--speed: .15s;color-scheme:dark}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:15px;background:var(--bg-primary);scrollbar-color:var(--border-strong) transparent}body{min-width:320px;min-height:100vh;background:var(--bg-primary);color:var(--text-primary);font-family:var(--font-ui);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.5}#root{display:flex;flex-direction:column;min-height:100vh;min-height:100dvh}::-webkit-scrollbar{width:4px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border)}input,textarea,select{font-family:var(--font-ui);font-size:.9rem;background:transparent;border:none;border-bottom:1px solid var(--border);color:var(--text-primary);padding:.5rem 0;outline:none;width:100%;transition:border-color var(--speed)}input:focus,textarea:focus,select:focus{border-bottom-color:var(--accent)}input::placeholder,textarea::placeholder{color:var(--text-dim)}textarea{resize:vertical;border:1px solid var(--border);padding:.75rem;border-radius:2px;background:var(--bg-secondary)}textarea:focus{border-color:var(--text-dim);outline:none}.hard-mode-input{width:100%;font-family:var(--font-mono);font-size:1.25rem;padding:1rem;text-align:center;border-bottom:2px solid var(--border);border-radius:0;transition:border-color var(--speed)}.hard-mode-input:focus{border-color:var(--accent)}select{background:var(--bg-secondary);border:1px solid var(--border);border-radius:2px;padding:.45rem .5rem;cursor:pointer;-webkit-appearance:auto;-moz-appearance:auto;appearance:auto}select:focus{border-color:var(--accent)}label{display:block;font-size:.7rem;text-transform:uppercase;letter-spacing:.08em;color:var(--text-secondary);margin-bottom:.3rem;font-weight:600}button,.btn{font-family:var(--font-ui);font-size:.8rem;font-weight:600;border:none;border-radius:2px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;padding:.5rem 1rem;font-size:.85rem;font-weight:500;gap:.4rem;transition:background-color var(--speed),border-color var(--speed),color var(--speed),opacity var(--speed),transform var(--speed);-webkit-user-select:none;user-select:none;background:transparent;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.04em}button:hover{color:var(--text-bright)}button:active{transform:scale(.97)}button:disabled{cursor:not-allowed;opacity:.52;transform:none}button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,[role=button]:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.btn-primary{background:var(--accent);color:#111}.btn-primary:hover{background:var(--accent-hover);color:#111!important}.btn-secondary{background:var(--bg-secondary);color:var(--text-primary);border:1px solid var(--border)}.btn-secondary:hover{border-color:var(--text-secondary);color:var(--text-bright)}.btn-danger{background:var(--bg-primary);border:1px solid var(--error-dim);color:var(--error)}.btn-danger:hover{background:var(--error-dim)}.btn-toggle{background:var(--bg-secondary);border:1px solid var(--border);color:var(--text-secondary);padding:.4rem .8rem}.btn-toggle.active{background:var(--accent);color:#111;border-color:var(--accent)}.btn-almost{background:var(--bg-primary);border:1px solid var(--warning-dim);color:var(--warning)}.btn-almost:hover{background:var(--warning-dim)}.btn-success{background:var(--bg-primary);border:1px solid var(--success-dim);color:var(--success)}.btn-success:hover{background:var(--success-dim)}.btn-ghost{color:var(--text-dim);background:transparent}.btn-ghost:hover{color:var(--text-primary);background:var(--bg-hover)}.app-header{display:flex;justify-content:space-between;align-items:center;position:sticky;top:0;z-index:80;padding:0 1.5rem;min-height:48px;border-bottom:1px solid var(--border);flex-shrink:0;background:var(--bg-primary)}.app-logo{display:flex;align-items:center;gap:.6rem;cursor:pointer;text-decoration:none;padding:.45rem .55rem;margin-left:-.55rem;text-transform:none;letter-spacing:0}.app-logo-mark{color:var(--accent);font-family:var(--font-mono);font-weight:700;font-size:.9rem}.app-logo-text{font-weight:600;font-size:.85rem;color:var(--text-primary);letter-spacing:-.02em}.header-nav{display:flex;gap:.5rem;align-items:center}.app-main{flex:1;display:flex;flex-direction:column;min-width:0}.view-loading{flex:1;display:grid;place-items:center;color:var(--text-dim);font-family:var(--font-mono);font-size:.8rem}.sync-icon{display:inline-flex;font-size:1rem}.sync-icon.spinning{animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.user-btn{padding:.2rem}.user-avatar{width:24px;height:24px;border-radius:50%;display:block}.user-avatar-fallback{width:24px;height:24px;border-radius:50%;background:var(--accent-dim);color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:.7rem;font-weight:700}.sync-status{font-size:.65rem;color:var(--text-dim);font-family:var(--font-mono);white-space:nowrap;padding-right:.5rem}.user-menu-wrap{position:relative}.user-menu-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:90}.user-menu{position:absolute;top:calc(100% + 8px);right:0;background:var(--bg-elevated);border:1px solid var(--border);border-radius:2px;min-width:200px;z-index:100;overflow:hidden;box-shadow:0 10px 28px #00000040}.user-menu-info{padding:.75rem;display:flex;flex-direction:column;gap:.15rem}.user-menu-name{font-size:.8rem;font-weight:600;color:var(--text-bright)}.user-menu-email{font-size:.65rem;color:var(--text-dim);font-family:var(--font-mono)}.user-menu-divider{height:1px;background:var(--border)}.user-menu-item{display:flex;width:100%;padding:.6rem .75rem;font-size:.75rem;color:var(--text-secondary);background:transparent;border:none;border-radius:0;text-transform:none;letter-spacing:0;cursor:pointer;transition:background var(--speed)}.user-menu-item:hover{background:var(--bg-hover);color:var(--text-bright)}.user-menu-item.danger:hover{background:var(--error-dim);color:var(--error)}.dash{max-width:880px;width:100%;margin:0 auto;padding:clamp(1.75rem,5vw,3.25rem) 1.5rem 4rem}.dash-top{display:flex;justify-content:space-between;align-items:center;gap:1.5rem;margin-bottom:1.5rem}.dash-title{display:flex;align-items:baseline;gap:.8rem;min-width:0}.dash-heading{color:var(--text-bright);font-size:1.05rem;line-height:1.3;letter-spacing:0;font-weight:600}.dash-intro{color:var(--text-dim);font-size:.75rem}.dash-actions{display:flex;gap:.35rem}.dash-action{min-height:30px;padding:.35rem .65rem;border:1px solid var(--border);border-radius:2px;background:var(--bg-secondary);color:var(--text-secondary);font-size:.72rem;font-weight:400;text-transform:none;letter-spacing:0}.dash-action:hover{border-color:var(--border-strong);background:var(--bg-hover);color:var(--text-bright)}.dash-summary{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));padding:.8rem 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border);margin-bottom:2.25rem}.summary-item{display:flex;align-items:baseline;gap:.45rem;min-width:0;padding:0 .8rem;border-left:1px solid var(--border);color:var(--text-dim)}.summary-item:first-child{padding-left:0;border-left:0}.summary-item strong{font-family:var(--font-mono);font-size:1.08rem;font-weight:400;color:var(--text-primary);letter-spacing:0}.summary-item strong.lit{color:var(--accent)}.summary-item span{overflow:hidden;font-size:.7rem;white-space:nowrap;text-overflow:ellipsis}.deck-section-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:.45rem;color:var(--text-dim);font-family:var(--font-mono);font-size:.72rem}.deck-section-title{font-size:inherit;text-transform:none;letter-spacing:0;color:var(--text-secondary);font-weight:600}.deck-list{display:flex;flex-direction:column;border-top:1px solid var(--border);overflow:visible}.deck-row{position:relative;display:flex;justify-content:space-between;align-items:center;gap:1.5rem;min-height:76px;padding:.9rem 0;border-bottom:1px solid var(--border);transition:background-color var(--speed)}.deck-row.menu-open{z-index:20}.deck-row:hover{background:#ffffff06}.deck-info{display:flex;flex-direction:column;gap:.24rem;min-width:0;flex:1}.deck-name-line{display:flex;align-items:center;gap:.7rem;min-width:0}.deck-name{font-size:.9rem;font-weight:600;color:var(--text-bright);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;word-break:break-word}.deck-due{flex-shrink:0;color:var(--accent);font-family:var(--font-mono);font-size:.74rem}.deck-desc{max-width:580px;overflow:hidden;font-size:.74rem;color:var(--text-dim);white-space:nowrap;text-overflow:ellipsis;word-break:break-word}.deck-meta{color:var(--text-dim);font-family:var(--font-mono);font-size:.72rem}.deck-right{display:flex;align-items:center;flex-shrink:0}.deck-btns{display:flex;align-items:center;gap:.25rem}.deck-study{min-width:90px;min-height:34px;border:1px solid var(--border-strong);border-left:3px solid var(--accent);border-radius:2px;color:var(--text-primary);background:var(--bg-secondary);font-family:var(--font-mono);font-size:.78rem;font-weight:400;text-transform:none;letter-spacing:0}.deck-study:hover{border-color:var(--accent);color:var(--text-bright);background:var(--bg-hover)}.deck-menu-wrap{position:relative}.deck-menu-button{width:34px;height:34px;padding:0;border-radius:2px;color:var(--text-dim);font-size:1.1rem;letter-spacing:0}.deck-menu-button:hover{color:var(--text-primary);background:var(--bg-hover)}.deck-menu-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:10}.deck-menu{position:absolute;top:calc(100% + .4rem);right:0;z-index:11;display:flex;flex-direction:column;width:180px;max-width:calc(100vw - 2rem);padding:.35rem;border:1px solid var(--border);border-radius:2px;background:var(--bg-secondary);box-shadow:0 10px 28px #00000047}.deck-menu button{min-height:38px;justify-content:flex-start;padding:.48rem .6rem;border-radius:3px;color:var(--text-secondary);text-transform:none;letter-spacing:0}.deck-menu button:hover{color:var(--text-bright);background:var(--bg-hover)}.deck-menu button.danger:hover{color:var(--error);background:var(--error-dim)}.empty-state{text-align:left;padding:3rem 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border);color:var(--text-dim)}.empty-state h3{font-size:1rem;font-weight:600;color:var(--text-primary);margin-bottom:.4rem}.empty-state p{font-size:.8rem;color:var(--text-dim)}.empty-actions{display:flex;gap:.5rem;margin-top:1.25rem}.ingest{max-width:880px;width:100%;margin:0 auto;padding:2rem 1.5rem}.ingest-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:2rem}.ingest-head h1{font-size:.8rem;text-transform:uppercase;letter-spacing:.1em;font-weight:600;color:var(--text-secondary)}.ingest-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:2.5rem}.ingest-section{display:flex;flex-direction:column;gap:1rem}.ingest-section h3{font-size:.7rem;text-transform:uppercase;letter-spacing:.08em;color:var(--text-secondary);font-weight:600;padding-bottom:.4rem;border-bottom:1px solid var(--border)}.ingest-section p{font-size:.8rem;color:var(--text-dim);line-height:1.5}.prompt-display{background:var(--bg-secondary);border:1px solid var(--border);border-radius:2px;padding:.75rem;font-family:var(--font-mono);font-size:.7rem;color:var(--text-secondary);max-height:130px;overflow-y:auto;white-space:pre-wrap;line-height:1.6}.ingest-feedback{display:flex;align-items:center;gap:.4rem;font-size:.8rem;padding:.5rem 0}.ingest-feedback.ok{color:var(--success)}.ingest-feedback.err{color:var(--error);background:var(--error-dim);padding:.5rem .75rem;border-radius:2px}.dropzone{display:grid;place-items:center;min-height:120px;padding:1.25rem;border:1px dashed var(--border-strong);border-radius:2px;color:var(--text-secondary);text-align:center;cursor:pointer;transition:background-color var(--speed),border-color var(--speed),color var(--speed)}.dropzone:hover,.dropzone.active{border-color:var(--accent);background:var(--accent-dim);color:var(--text-primary)}.preview-wrap{margin-top:2.5rem;border-top:1px solid var(--border);padding-top:1.5rem}.preview-wrap h3{font-size:.65rem;text-transform:uppercase;letter-spacing:.1em;color:var(--text-dim);font-weight:600;margin-bottom:1rem}.preview-table{width:100%;border-collapse:collapse;font-size:.8rem}.preview-table th{padding:.5rem .5rem .5rem 0;text-align:left;color:var(--text-dim);font-weight:600;font-size:.65rem;text-transform:uppercase;letter-spacing:.08em;border-bottom:1px solid var(--border)}.preview-table td{padding:.5rem .5rem .5rem 0;border-bottom:1px solid var(--bg-hover);vertical-align:top}.preview-table td:first-child{font-family:var(--font-mono);color:var(--text-secondary)}.preview-table td:nth-child(2){font-family:var(--font-mono);color:var(--text-primary);font-weight:500}.preview-table td:nth-child(3){color:var(--text-dim);font-style:italic;font-size:.75rem}.arena{max-width:680px;width:100%;margin:0 auto;padding:1.5rem 1.5rem 2rem;flex:1;display:flex;flex-direction:column}.arena-bar{display:flex;justify-content:space-between;align-items:center;margin-bottom:.75rem}.arena-bar-left,.arena-bar-right{display:flex;align-items:center;gap:.6rem}.arena-counter{font-family:var(--font-mono);font-size:.8rem;color:var(--text-secondary)}.arena-score{font-family:var(--font-mono);font-size:.8rem;font-weight:500}.arena-score.ok{color:var(--success)}.arena-score.ko{color:var(--error)}.progress-track{width:100%;height:2px;background:var(--border);margin-bottom:0}.progress-fill{height:100%;background:var(--accent);transition:width .2s ease}.card-zone{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;cursor:pointer;padding:2rem 0;-webkit-user-select:none;user-select:none;min-height:260px}.card-side-label{font-size:.6rem;text-transform:uppercase;letter-spacing:.12em;color:var(--text-dim);font-weight:600;margin-bottom:1.5rem}.card-text{font-family:var(--font-mono);font-size:1.5rem;line-height:1.7;color:var(--text-primary);text-align:center;max-width:90%;word-break:break-word}.card-text.answer{color:var(--accent)}.card-hint{margin-top:2rem;font-size:.7rem;color:var(--text-dim);display:flex;align-items:center;gap:.3rem}.card-context{margin-top:1.25rem;font-size:.8rem;color:var(--text-dim);font-style:italic;text-align:center;max-width:80%;line-height:1.5;border-top:1px solid var(--border);padding-top:1rem;word-break:break-word}.rating-row{display:flex;gap:.75rem;margin-top:2rem;width:100%;max-width:300px}.rating-row button{flex:1;justify-content:center}.kbd-hud{display:flex;flex-direction:column;align-items:center;gap:.5rem;padding:1.5rem 0 .5rem;border-top:1px solid var(--border);margin-top:auto}.kbd-hud-label{font-size:.55rem;text-transform:uppercase;letter-spacing:.12em;color:var(--text-dim);font-weight:600}.kbd-row{display:flex;gap:.4rem}.kbd-key{font-family:var(--font-mono);font-size:.7rem;font-weight:500;color:var(--text-dim);background:var(--bg-secondary);border:1px solid var(--border);border-bottom-width:2px;border-radius:3px;padding:.25rem .5rem;min-width:2rem;height:1.6rem;display:inline-flex;align-items:center;justify-content:center;gap:.3rem;transition:all var(--speed)}.kbd-key.pressed{background:var(--accent);color:#111;border-color:var(--accent);transform:translateY(1px);border-bottom-width:1px}.kbd-action{font-size:.6rem;color:var(--text-dim);font-family:var(--font-ui);text-transform:uppercase;letter-spacing:.04em}.session-done{text-align:center;display:flex;flex-direction:column;align-items:center;gap:1rem}.session-done h2{font-size:1.1rem;font-weight:600;color:var(--text-primary)}.session-done p{font-size:.85rem;color:var(--text-secondary);max-width:400px}.session-stats{display:flex;gap:2rem;margin:.5rem 0 1rem}.session-stat{display:flex;flex-direction:column;align-items:center}.session-stat .num{font-family:var(--font-mono);font-size:1.8rem;font-weight:500;line-height:1.2}.session-stat .num.ok{color:var(--success)}.session-stat .num.ko{color:var(--error)}.session-stat .lbl{font-size:.6rem;text-transform:uppercase;letter-spacing:.08em;color:var(--text-dim);font-weight:600}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000bf;display:flex;align-items:center;justify-content:center;z-index:100;padding:1rem}.modal-content{background:var(--bg-elevated);border:1px solid var(--border);border-radius:2px;width:100%;max-width:400px;padding:1.5rem;display:flex;flex-direction:column;gap:1.25rem;box-shadow:0 14px 44px #00000059}.modal-content h3{font-size:.85rem;font-weight:500;white-space:nowrap}.flex-between{display:flex;justify-content:space-between;align-items:center}.card-compare{display:flex;flex-direction:column;align-items:center;gap:1.5rem;width:100%}.card-compare-side{display:flex;flex-direction:column;align-items:center;width:100%}.card-compare-divider{width:50px;height:2px;background:var(--border)}.card-text.dim{color:var(--text-dim);font-size:1.2rem}.breakdown-section{margin-bottom:2.5rem;padding-bottom:1.5rem;border-bottom:1px solid var(--border)}.breakdown-bar{display:flex;width:100%;height:4px;background:var(--bg-hover);border-radius:2px;overflow:hidden;margin-bottom:.75rem}.breakdown-segment{height:100%;transition:width .3s ease}.breakdown-segment.new{background:#4fc3f7}.breakdown-segment.learning{background:#ffb74d}.breakdown-segment.mastered{background:var(--success)}.breakdown-legend{display:flex;gap:1.5rem;margin-top:1rem;flex-wrap:wrap;font-size:.65rem;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em;font-weight:600}.breakdown-legend-item{display:flex;align-items:center;gap:.35rem}.dot{width:8px;height:8px;border-radius:50%}.dot.new{background:#4fc3f7}.dot.learning{background:#ffb74d}.dot.mastered{background:var(--success)}.deck-mastery-pct{font-family:var(--font-mono);font-size:1rem;color:var(--text-dim);font-weight:500;margin-left:1rem}.deck-mastery-bar{display:flex;height:3px;width:100%;background:var(--bg-hover);border-radius:1.5px;overflow:hidden;margin-top:.5rem}.app-footer{border-top:1px solid var(--border);padding:1rem 1.5rem;display:flex;justify-content:center;align-items:center;gap:1rem;flex-wrap:wrap;text-align:center;font-size:.7rem;color:var(--text-dim)}.app-footer nav{display:flex;gap:.8rem}.app-footer a{color:var(--text-secondary);text-decoration:none}.app-footer a:hover{color:var(--accent)}.landing{width:min(1040px,100%);margin:0 auto;padding:clamp(3rem,8vw,7rem) 1.5rem 4rem}.landing-hero{max-width:780px;padding-bottom:clamp(3rem,8vw,6rem)}.landing-kicker,.landing-section-head>span{display:inline-block;margin-bottom:1rem;color:var(--accent);font-family:var(--font-mono);font-size:.72rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase}.landing-hero h1{max-width:760px;color:var(--text-bright);font-size:clamp(2.6rem,8vw,5.8rem);line-height:.98;letter-spacing:-.065em}.landing-hero h1 span{display:block;color:var(--text-secondary)}.landing-lead{max-width:640px;margin-top:2rem;color:var(--text-secondary);font-size:clamp(1rem,2vw,1.18rem);line-height:1.75}.landing-actions{display:flex;align-items:center;gap:1.2rem;margin-top:2.25rem;color:var(--text-dim);font-size:.78rem}.landing-cta{min-height:48px;padding-inline:1.5rem}.landing-workflow{padding:clamp(2rem,5vw,3.5rem);border:1px solid var(--border);border-radius:2px;background:linear-gradient(145deg,rgba(244,196,78,.04),transparent 45%),var(--bg-secondary)}.landing-section-head{display:grid;grid-template-columns:.65fr 1.35fr;gap:2rem;align-items:start}.landing-section-head h2{max-width:620px;color:var(--text-bright);font-size:clamp(1.5rem,4vw,2.4rem);line-height:1.15;letter-spacing:-.035em}.landing-steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem;margin-top:3rem}.landing-step{min-height:190px;padding:1.25rem;border-top:1px solid var(--border-strong)}.landing-step-number{color:var(--accent);font-family:var(--font-mono);font-size:.7rem}.landing-step h3{margin-top:2.5rem;color:var(--text-primary);font-size:1.05rem}.landing-step p{margin-top:.65rem;color:var(--text-secondary);font-size:.88rem;line-height:1.65}.landing-trust{display:flex;justify-content:space-between;gap:1rem;padding:2rem 0;color:var(--text-dim);font-size:.72rem;letter-spacing:.04em;text-transform:uppercase}@media(max-width:768px){html{font-size:14px}.app-header{padding:0 1rem}.dash,.ingest{padding:1.5rem 1rem}.ingest-grid{grid-template-columns:1fr;gap:2rem}.arena{padding:1rem 1rem 1.5rem}.card-text{font-size:1.25rem}.modal-overlay{padding:1rem}.modal-content{max-width:100%}.preview-wrap{overflow-x:auto}.preview-table{min-width:500px}.landing-section-head{grid-template-columns:1fr;gap:.5rem}.landing-steps{grid-template-columns:1fr;margin-top:2rem}.landing-step{min-height:0}.landing-step h3{margin-top:1.5rem}}@media(max-width:520px){.app-header{min-height:48px;padding:0 .75rem}.header-nav{gap:.15rem}.sync-status,.app-logo-text{display:none}.dash{padding-top:1.15rem}.dash-top{flex-wrap:wrap;align-items:flex-start;gap:.75rem;margin-bottom:1rem}.dash-title{width:100%}.dash-actions{width:100%;gap:.35rem}.dash-action{flex:1;min-height:38px}.dash-summary{grid-template-columns:repeat(2,minmax(0,1fr));padding:0;margin-bottom:1.75rem}.summary-item{min-height:46px;padding:.65rem .75rem;border-bottom:1px solid var(--border)}.summary-item:first-child{padding-left:.75rem}.summary-item:nth-child(odd){border-left:0}.summary-item:nth-child(n+3){border-bottom:0}.deck-row{flex-direction:column;align-items:flex-start;gap:.6rem;padding:.75rem 0}.deck-row:hover{margin:0;padding-left:0;padding-right:0}.deck-right{width:100%;justify-content:stretch}.deck-btns{width:100%}.deck-study{flex:1;min-height:42px}.deck-menu-button{width:44px;height:44px}.deck-menu{top:calc(100% + .5rem);right:0;width:min(220px,calc(100vw - 2rem))}.deck-menu button{min-height:44px;font-size:.9rem}.deck-name{white-space:normal}.card-text{font-size:1.1rem;max-width:100%}.card-context{max-width:100%;font-size:.75rem}.card-zone{padding:1.5rem 0;min-height:200px}.card-hint{font-size:.65rem}.rating-row{max-width:100%}.rating-row button{padding:.6rem .5rem;min-height:44px}.kbd-hud{display:none}.session-stat .num{font-size:1.4rem}.prompt-display{max-height:100px;font-size:.65rem}.ingest-head h1{font-size:.7rem}.landing{padding:3rem 1rem 2rem}.landing-hero h1{letter-spacing:-.05em}.landing-actions{align-items:flex-start;flex-direction:column}.landing-workflow{padding:1.25rem}.landing-trust{display:grid;grid-template-columns:1fr 1fr}}@media(max-width:360px){.dash-intro{display:none}}@media(max-width:400px){html{font-size:14px}.app-header{min-height:48px}.app-logo-text{font-size:.8rem}.header-nav button{min-height:40px;font-size:.68rem;padding:.3rem .48rem}.dash{padding:1rem .75rem}.dash-summary{margin-bottom:1.75rem}.deck-btns button{min-height:44px;padding:.35rem .6rem}.arena{padding:.75rem .75rem 1rem}.arena-bar{gap:.3rem}.card-text{font-size:1rem;line-height:1.6}.modal-overlay{padding:.5rem}.modal-content{padding:1.25rem}.app-footer{padding:.75rem;font-size:.6rem}}@media(hover:none)and (pointer:coarse){button,.btn{min-height:44px;padding:.5rem .75rem}.deck-btns button{min-height:40px;min-width:40px}.rating-row button{min-height:48px;font-size:.85rem}.kbd-hud{display:none}.card-zone{cursor:default;-webkit-tap-highlight-color:transparent}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}.deck-tags{display:flex;flex-wrap:wrap;gap:.35rem;margin-top:.25rem}.deck-tag{color:var(--text-dim);font-size:.6rem;padding:0;text-transform:uppercase;letter-spacing:.05em}.deck-tag+.deck-tag:before{content:"·";padding-right:.35rem}.deck-lang-badge{display:inline-flex;align-items:center;font-size:.65rem;color:var(--text-dim)}.deck-lang-badge:after{content:"·";padding-left:.35rem}