:root{--surface: #ffffff;--canvas: #f4f2ec;--brand: #1f4d33;--brand-soft: #e9f0eb;--text: #2c2c2a;--secondary: #5f5e5a;--muted: #888780;--border: #dbe4dc;--success: #0f6e56;--success-soft: #e5f2ee;--error: #993c1d;--error-soft: #f7e9e3;--warning: #854f0b;--warning-soft: #f8eedb;--technical: #185fa5;--technical-soft: #e8f1fa;--inset: #f9f8f4;--radius: 12px;color:var(--text);background:var(--canvas);font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-synthesis:none}*{box-sizing:border-box}html{background:var(--canvas)}body{margin:0;min-width:320px;background:var(--canvas);color:var(--text);-webkit-font-smoothing:antialiased}button,input,textarea,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}button{color:inherit}h1,h2,h3,p{margin-top:0}h1{margin-bottom:14px;font-size:clamp(2rem,4vw,3.8rem);line-height:1.04;letter-spacing:-.045em;font-weight:650}h2{margin-bottom:12px;font-size:1.3rem;line-height:1.2;letter-spacing:-.02em}h3{margin-bottom:8px;font-size:1.05rem}p{color:var(--secondary);line-height:1.62}:focus-visible{outline:3px solid color-mix(in srgb,var(--brand) 35%,transparent);outline-offset:3px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.app-shell{min-height:100vh}.top-nav{position:sticky;top:0;z-index:30;display:grid;grid-template-columns:auto 1fr auto;align-items:center;min-height:72px;padding:0 3vw;background:#f4f2ecf5;border-bottom:.5px solid var(--border);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.brand-lockup{display:inline-flex;align-items:center;gap:8px;font-size:1.05rem;font-weight:600;letter-spacing:-.02em}.brand-lockup img{width:42px;height:42px}.desktop-nav{display:flex;justify-content:center;align-items:stretch;gap:clamp(12px,1.5vw,28px);height:72px}.desktop-nav a{position:relative;display:flex;align-items:center;color:var(--secondary);font-size:.86rem;font-weight:550}.desktop-nav a:after{position:absolute;right:0;bottom:0;left:0;height:2px;background:var(--brand);content:"";opacity:0;transform:scaleX(.4);transition:.16s ease}.desktop-nav a:hover,.desktop-nav a.active{color:var(--brand)}.desktop-nav a.active:after{opacity:1;transform:scaleX(1)}.desktop-nav .benchmark-link{color:var(--technical)}.desktop-nav .benchmark-link:after{background:var(--technical)}.utility-nav{display:flex;align-items:center;gap:8px}.utility-nav>a,.utility-nav>button{display:grid;min-width:38px;height:38px;place-items:center;padding:0 10px;border:.5px solid var(--border);border-radius:9px;background:var(--surface);color:var(--secondary);font-size:.68rem;font-weight:700;cursor:pointer}.mobile-menu-button,.mobile-bottom-nav{display:none!important}.app-main{min-height:calc(100vh - 72px)}.page{width:min(1240px,calc(100% - 48px));margin:0 auto;padding:72px 0 96px}.backend-status-strip{display:flex;min-height:28px;align-items:center;gap:18px;margin:-28px 0 32px;color:var(--muted);font-size:.84rem}.backend-status-state{display:inline-flex;align-items:center;gap:9px;color:var(--secondary)}.backend-status-dot{width:8px;height:8px;flex:0 0 8px;border-radius:50%;background:var(--muted)}.backend-status-strip.online .backend-status-dot{background:#3d874d}.backend-status-strip.offline .backend-status-dot{background:var(--error)}.backend-status-strip.waking .backend-status-dot{background:var(--warning);animation:backend-waking-pulse 1.6s ease-in-out infinite}.backend-status-divider{width:1px;height:20px;background:#dedbd2}.backend-wake-note{line-height:1.4}@keyframes backend-waking-pulse{0%,to{opacity:.45;box-shadow:0 0 color-mix(in srgb,var(--warning) 0%,transparent)}50%{opacity:1;box-shadow:0 0 0 5px color-mix(in srgb,var(--warning) 18%,transparent)}}@media(prefers-reduced-motion:reduce){.backend-status-strip.waking .backend-status-dot{animation:none}}.page-header{display:flex;align-items:flex-end;justify-content:space-between;gap:40px;margin-bottom:48px}.page-header>div:first-child{max-width:760px}.page-header h1{max-width:760px}.page-description{max-width:700px;margin-bottom:0;font-size:1.02rem}.page-header.technical .eyebrow,.technical-text{color:var(--technical)}.page-header.technical h1{color:#163d60}.page-actions,.form-actions,.card-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.eyebrow{margin-bottom:10px;color:var(--brand);font-size:.72rem;font-weight:750;letter-spacing:.11em;text-transform:uppercase}.button{display:inline-flex;min-height:42px;align-items:center;justify-content:center;gap:8px;padding:10px 17px;border:.5px solid transparent;border-radius:9px;font-size:.88rem;font-weight:650;cursor:pointer;transition:.15s ease}.button:hover:not(:disabled){transform:translateY(-1px)}.button:disabled{cursor:not-allowed;opacity:.45}.button.primary{background:var(--brand);color:#fff}.button.secondary{background:transparent;border-color:#bdc9bf;color:var(--text)}.button.danger{background:var(--error);color:#fff}.button.technical{background:var(--technical);color:#fff}.button.full{width:100%}.text-button,.text-link{padding:0;border:0;background:transparent;color:var(--brand);font-size:.84rem;font-weight:650;cursor:pointer}.text-button.destructive{color:var(--error)}.confirm-dialog-copy{margin:-4px 0 26px;color:var(--secondary);line-height:1.6}.quick-actions{display:grid;grid-template-columns:repeat(4,1fr);margin-bottom:72px;border-top:.5px solid var(--border);border-bottom:.5px solid var(--border)}.quick-actions a{display:grid;min-height:142px;align-content:center;padding:24px;border-right:.5px solid var(--border)}.quick-actions a:last-child{border-right:0}.quick-actions span{margin-bottom:18px;color:var(--muted);font-size:.7rem;letter-spacing:.1em}.quick-actions strong{margin-bottom:6px;color:var(--text)}.quick-actions small{color:var(--secondary)}.section-block{margin-bottom:56px}.section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:22px}.section-heading h2,.section-heading p{margin-bottom:0}.section-heading.compact{align-items:center}.session-grid,.material-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.session-card,.material-card,.card-panel,.metric-card,.recommendation-card,.progress-summary,.benchmark-run,.methodology-card{background:var(--surface);border:.5px solid var(--border);border-radius:var(--radius)}.session-card,.material-card{display:flex;min-height:245px;flex-direction:column;padding:24px}.session-card h2,.session-card h3,.material-card h2{margin-top:22px}.session-card .button{margin-top:auto}.session-card-controls{display:flex;align-items:center;gap:12px;margin-top:auto;flex-wrap:wrap}.session-card-controls .button{margin-top:0;margin-right:auto}.card-topline{display:flex;min-height:24px;align-items:center;justify-content:space-between;gap:12px;color:var(--muted);font-size:.76rem}.badge{display:inline-flex;min-height:24px;align-items:center;padding:4px 9px;border-radius:999px;font-size:.69rem;font-weight:700;letter-spacing:.02em}.badge.brand{background:var(--brand-soft);color:var(--brand)}.badge.neutral{background:#efeee9;color:var(--secondary)}.badge.warning{background:var(--warning-soft);color:var(--warning)}.badge.technical{background:var(--technical-soft);color:var(--technical)}.score-bar-wrap{display:grid;gap:7px;margin:14px 0 22px;color:var(--muted);font-size:.72rem}.score-bar-track{height:5px;overflow:hidden;border-radius:999px;background:#e8e7e1}.score-bar-fill{display:block;height:100%;border-radius:inherit;background:var(--brand)}.score-bar-fill.tone-success{background:var(--success)}.score-bar-fill.tone-error{background:var(--error)}.score-bar-fill.tone-technical{background:var(--technical)}.home-lower-grid{display:grid;grid-template-columns:.9fr 1.4fr;gap:16px}.recommendation-card,.progress-summary{padding:28px}.recommendation-card{background:var(--brand);border-color:var(--brand)}.recommendation-card h2,.recommendation-card .eyebrow{color:#fff}.recommendation-card p{color:#ffffffb8}.recommendation-card .button{background:#fff;color:var(--brand)}.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:48px}.metric-grid.compact{grid-template-columns:repeat(2,1fr);margin-bottom:0}.metric-card{min-height:132px;padding:20px}.metric-card p{margin-bottom:24px;color:var(--secondary);font-size:.8rem}.metric-card strong{display:block;color:var(--brand);font-size:clamp(1.7rem,3vw,2.5rem);font-weight:650;letter-spacing:-.04em}.metric-card span{display:block;margin-top:8px;color:var(--muted);font-size:.74rem}.metric-card.tone-technical strong{color:var(--technical)}.empty-state{display:grid;min-height:260px;place-items:center;align-content:center;padding:40px;text-align:center}.empty-state p{max-width:430px}.empty-mark{display:grid;width:42px;height:42px;place-items:center;margin-bottom:16px;border:.5px solid var(--border);border-radius:50%;color:var(--brand);font-size:1.4rem}.loading-block{min-height:260px;padding:40px;background:var(--surface);border:.5px solid var(--border);border-radius:var(--radius)}.loading-line{display:block;width:80%;height:18px;margin-bottom:14px;border-radius:6px;background:#eeece5;animation:shimmer 1.4s infinite}.loading-line.short{width:48%}@keyframes shimmer{50%{opacity:.45}}.status-notice{margin-bottom:24px;padding:14px 16px;border:.5px solid;border-radius:9px;font-size:.86rem;line-height:1.5}.status-notice.error{background:var(--error-soft);border-color:#e8c7bb;color:var(--error)}.status-notice.success{background:var(--success-soft);border-color:#bad8cf;color:var(--success)}.status-notice.info{background:var(--technical-soft);border-color:#bfd4e8;color:#164e7f}.modal-backdrop,.drawer-backdrop{position:fixed;z-index:80;inset:0;display:grid;place-items:center;padding:24px;background:#1f2b2370}.modal{width:min(520px,100%);max-height:calc(100vh - 48px);overflow-y:auto;padding:26px;background:var(--surface);border:.5px solid var(--border);border-radius:var(--radius)}.modal-wide{width:min(760px,100%)}.modal-header{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:24px}.modal-header h2{margin-bottom:0}.form-stack{display:grid;gap:18px}.form-stack label,.toolbar label,.form-stack .select-field,.toolbar .select-field,.fill-answer{display:grid;gap:8px;color:var(--secondary);font-size:.78rem;font-weight:650}.file-upload-field{position:relative}.file-upload-dropzone{display:flex;min-height:72px;align-items:center;gap:12px;padding:12px 14px;border:1px dashed #aebfb1;border-radius:10px;background:var(--inset);cursor:pointer;transition:border-color .14s ease,background .14s ease}.file-upload-dropzone:hover,.file-upload-field:focus-within .file-upload-dropzone{border-color:var(--brand);background:var(--brand-soft)}.file-upload-mark{display:grid;width:34px;height:34px;flex:0 0 34px;place-items:center;border-radius:9px;background:var(--brand);color:#fff;font-size:1.15rem;font-weight:500}.file-upload-copy{display:grid;min-width:0;gap:3px}.file-upload-copy strong{overflow:hidden;color:var(--text);font-size:.82rem;text-overflow:ellipsis;white-space:nowrap}.file-upload-copy small{color:var(--muted);font-size:.72rem;font-weight:450}.file-upload-action{margin-left:auto;padding:7px 10px;border:.5px solid var(--border);border-radius:7px;background:var(--surface);color:var(--brand);font-size:.74rem;font-weight:700;white-space:nowrap}.file-upload-input{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;opacity:0}input,textarea,select,.select-trigger{width:100%;padding:11px 12px;border:.5px solid #bdc9bf;border-radius:8px;outline:none;background:var(--surface);color:var(--text)}textarea{resize:vertical;line-height:1.55}input:focus,textarea:focus,select:focus{border-color:var(--brand);box-shadow:0 0 0 3px #1f4d331a}.select-field{position:relative;display:grid;gap:8px;min-width:220px}.select-label{color:var(--secondary);font-size:.78rem;font-weight:650}.select-trigger{display:flex;min-height:44px;align-items:center;justify-content:space-between;gap:16px;text-align:left;cursor:pointer}.select-trigger:hover:not(:disabled){border-color:#9bae9f}.select-trigger.open,.select-trigger:focus-visible{border-color:var(--brand);box-shadow:0 0 0 3px #1f4d331a}.select-trigger:disabled{cursor:not-allowed;opacity:.5}.select-placeholder{color:var(--muted)}.select-chevron{width:8px;height:8px;flex:0 0 8px;border-right:1.5px solid var(--brand);border-bottom:1.5px solid var(--brand);transform:translateY(-2px) rotate(45deg);transition:transform .14s ease}.select-trigger.open .select-chevron{transform:translateY(2px) rotate(225deg)}.select-menu{position:absolute;z-index:60;top:calc(100% + 7px);right:0;left:0;display:grid;max-height:280px;overflow-y:auto;padding:6px;background:var(--surface);border:.5px solid var(--border);border-radius:10px}.select-option{display:flex;width:100%;min-height:42px;align-items:center;justify-content:space-between;gap:14px;padding:10px 11px;border:0;border-radius:7px;background:transparent;color:var(--secondary);font-size:.84rem;text-align:left;cursor:pointer}.select-option:hover,.select-option:focus-visible{background:var(--inset);color:var(--text)}.select-option.selected{background:var(--brand-soft);color:var(--brand);font-weight:650}.select-check{color:var(--brand);font-size:.9rem}.field-note,.muted-copy{margin:0;color:var(--muted);font-size:.78rem}.account-link{display:inline-flex;max-width:220px;overflow:hidden;align-items:center;padding:0;border:0;background:transparent;color:var(--secondary);font-size:.78rem;text-overflow:ellipsis;white-space:nowrap;cursor:pointer}.guest-mode-notice{display:flex;align-items:center;justify-content:space-between;gap:24px;margin:24px 0 32px;padding:20px 24px;border:1px solid var(--line, #d8e1db);border-radius:18px;background:#f1f7f2}.guest-mode-notice p{margin:6px 0 0}.guest-mode-notice .eyebrow{margin:0}@media(max-width:720px){.guest-mode-notice{align-items:flex-start;flex-direction:column}}.account-link:hover{color:var(--brand)}.auth-page{max-width:760px;margin:0 auto}.auth-card{width:min(480px,100%);margin:40px auto 0;padding:28px}.auth-switch{display:flex;justify-content:center;gap:6px;margin-top:22px;color:var(--muted);font-size:.78rem}.form-actions{justify-content:flex-end;margin-top:6px}.study-page{width:min(1500px,calc(100% - 32px));margin:0 auto;padding:24px 0 48px}.study-layout{display:grid;min-height:calc(100vh - 145px);grid-template-columns:260px minmax(0,1fr);overflow:hidden;background:var(--surface);border:.5px solid var(--border);border-radius:var(--radius)}.study-sidebar,.evidence-panel{padding:24px;background:var(--inset)}.study-sidebar{display:flex;flex-direction:column;gap:34px;border-right:.5px solid var(--border)}.study-sidebar h1{font-size:1.55rem}.sidebar-link{margin-top:4px;font-size:.72rem}.study-sidebar section{display:grid;gap:12px}.study-sidebar section h2{margin:0;font-size:.83rem}.sidebar-heading{display:flex;align-items:center;justify-content:space-between}.sidebar-heading button,.recent-question{padding:0;border:0;background:none;color:var(--brand);font-size:.76rem;font-weight:650;text-align:left;cursor:pointer}.material-mini{display:grid;grid-template-columns:auto 1fr;align-items:start;gap:9px;padding:10px 0;border-bottom:.5px solid var(--border)}.material-mini strong,.material-mini small{display:block}.material-mini strong{margin-bottom:4px;font-size:.77rem}.material-mini small{color:var(--muted);font-size:.68rem}.status-dot{display:inline-block;width:7px;height:7px;flex:0 0 7px;margin-top:5px;border-radius:50%;background:var(--muted)}.status-dot.indexed{background:var(--brand)}.status-dot.failed{background:var(--error)}.recent-question{display:-webkit-box;overflow:hidden;color:var(--secondary);font-weight:500;line-height:1.4;-webkit-line-clamp:2;-webkit-box-orient:vertical}.conversation-panel{display:grid;min-width:0;grid-template-rows:auto 1fr auto;background:var(--surface)}.learn-main{display:grid;min-width:0;grid-template-rows:auto 1fr;background:var(--surface)}.learn-mode-tabs{display:flex;gap:6px;padding:12px 18px;background:var(--inset);border-bottom:.5px solid var(--border)}.learn-mode-tabs button{min-width:92px;padding:10px 18px;border:.5px solid transparent;border-radius:8px;background:transparent;color:var(--secondary);font-weight:650;cursor:pointer}.learn-mode-tabs button:hover,.learn-mode-tabs button.active{border-color:var(--border);background:var(--surface);color:var(--brand)}.learn-guide{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-bottom:12px;padding:14px 18px;background:var(--brand-soft);border:.5px solid rgba(31,77,51,.2);border-radius:10px}.learn-guide p,.learn-guide strong{margin:0}.learn-guide strong{font-size:.84rem}.compact-button{min-height:36px;padding:8px 12px}.source-drawer-list{display:grid;gap:12px}.embedded-tool{min-width:0;padding:24px}.practice-layout.embedded{display:block}.practice-layout.embedded .quiz-builder{min-height:0}.flashcard-layout.embedded{grid-template-columns:minmax(240px,.55fr) minmax(360px,1fr)}.flashcard-layout.embedded .flashcard-review{min-height:540px}.conversation-heading,.review-heading,.quiz-active-header{display:flex;align-items:center;justify-content:space-between;gap:20px}.conversation-heading{padding:22px 28px;border-bottom:.5px solid var(--border)}.conversation-heading h2,.conversation-heading p{margin-bottom:0}.message-list{display:flex;max-height:calc(100vh - 320px);flex-direction:column;gap:24px;overflow-y:auto;padding:32px 6vw}.message{max-width:720px}.message.user{align-self:flex-end;padding:15px 18px;border-radius:12px 12px 3px;background:var(--inset)}.message.assistant{align-self:flex-start}.message-role{display:block;margin-bottom:8px;color:var(--muted);font-size:.66rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.message p{margin:0;color:var(--text);white-space:pre-line}.grounding-line{margin-top:10px;padding:0;border:0;background:transparent;color:var(--brand);font-size:.76rem;font-weight:650;cursor:pointer}.answering-state{display:flex;align-items:center;gap:6px;color:var(--muted);font-size:.78rem}.answering-state span{width:5px;height:5px;border-radius:50%;background:var(--brand);animation:pulse 1.2s infinite}.answering-state span:nth-child(2){animation-delay:.15s}.answering-state span:nth-child(3){animation-delay:.3s}@keyframes pulse{50%{opacity:.25}}.question-composer{display:grid;grid-template-columns:1fr auto;gap:10px;padding:18px 24px;border-top:.5px solid var(--border)}.question-composer textarea{min-height:46px;max-height:130px;resize:none}.evidence-panel{display:flex;flex-direction:column;gap:14px;border-left:.5px solid var(--border)}.source-card{background:var(--surface);border:.5px solid var(--border);border-radius:9px}.source-card summary{display:grid;gap:5px;padding:14px;cursor:pointer}.source-card summary span,.source-card summary small{color:var(--muted);font-size:.67rem}.source-card summary strong{font-size:.78rem}.source-card p{max-height:230px;overflow:auto;margin:0;padding:0 14px 14px;color:var(--secondary);font-size:.76rem}.evidence-actions{display:grid;gap:9px;margin-top:auto}.toolbar{display:flex;align-items:flex-end;gap:14px;margin-bottom:26px;padding:18px;background:var(--surface);border:.5px solid var(--border);border-radius:var(--radius)}.toolbar label{min-width:220px}.toolbar .search-field{flex:1}.material-card .card-actions{margin-top:auto;padding-top:20px;border-top:.5px solid var(--border)}.material-content{padding:20px;background:var(--inset);border-radius:9px;color:var(--secondary);white-space:pre-wrap;line-height:1.65}.page-footer-action{display:flex;justify-content:flex-end;margin-top:24px}.practice-layout{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(320px,.75fr);gap:18px}.card-panel{padding:26px}.quiz-builder{min-height:520px}.segmented-control,.filter-chips{display:flex;gap:7px;flex-wrap:wrap}.segmented-control button,.filter-chips button{min-height:36px;padding:8px 12px;border:.5px solid var(--border);border-radius:999px;background:transparent;color:var(--secondary);font-size:.76rem;cursor:pointer}.segmented-control button.active,.filter-chips button.active{border-color:var(--brand);background:var(--brand-soft);color:var(--brand);font-weight:650}.practice-summary{display:grid;align-content:start;gap:18px}.history-mini-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:13px 0;border-bottom:.5px solid var(--border)}.history-mini-row strong,.history-mini-row small{display:block}.history-mini-row small,.history-mini-row>span{margin-top:4px;color:var(--muted);font-size:.72rem}.quiz-active-page{width:min(900px,calc(100% - 48px))}.quiz-active-header h1{font-size:2.2rem}.quiz-active-header>span{color:var(--muted);font-size:.8rem}.quiz-progress{height:5px;margin-bottom:32px;overflow:hidden;border-radius:999px;background:#e6e5df}.quiz-progress span{display:block;height:100%;background:var(--brand);transition:width .2s ease}.question-stack{display:grid;gap:16px}.question-card{padding:26px;background:var(--surface);border:.5px solid var(--border);border-radius:var(--radius)}.question-heading{display:grid;gap:8px;margin-bottom:18px}.question-heading h2{margin:0;font-size:1rem;line-height:1.45}.question-heading span{color:var(--muted);font-size:.68rem;font-weight:650;letter-spacing:.08em;text-transform:uppercase}.answer-options{display:grid;gap:9px}.answer-options label{display:grid;grid-template-columns:auto 1fr;align-items:start;gap:10px;padding:13px;border:.5px solid var(--border);border-radius:8px;cursor:pointer}.answer-options label.selected{border-color:var(--brand);background:var(--brand-soft)}.answer-options input{width:auto;margin-top:3px;accent-color:var(--brand)}.sticky-actions{position:sticky;bottom:20px;display:flex;justify-content:flex-end;gap:10px;width:max-content;margin:28px 0 0 auto;padding:10px;background:#fffffff0;border:.5px solid var(--border);border-radius:11px;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.result-summary-line{display:grid;grid-template-columns:auto 1fr;align-items:center;gap:24px;margin-bottom:38px;padding:26px;background:var(--surface);border:.5px solid var(--border);border-radius:var(--radius)}.result-score{color:var(--brand);font-size:3.4rem;font-weight:650;letter-spacing:-.05em}.result-summary-line p{margin-bottom:0}.result-list{display:grid;gap:12px}.result-row{display:grid;grid-template-columns:90px 1fr;gap:22px;padding:24px;background:var(--surface);border:.5px solid var(--border);border-left-width:4px;border-radius:var(--radius)}.result-row.correct{border-left-color:var(--success);background:var(--success-soft)}.result-row.incorrect{border-left-color:var(--error);background:var(--error-soft)}.result-index{color:var(--success);font-size:.73rem;font-weight:750;text-transform:uppercase}.result-row.incorrect .result-index{color:var(--error)}.explanation{margin-top:14px;padding:12px;background:var(--inset);border-radius:7px;color:var(--secondary);font-size:.84rem;line-height:1.55}.flashcard-layout{display:grid;grid-template-columns:330px minmax(0,1fr);gap:18px}.flashcard-sidebar{display:grid;align-content:start;gap:12px}.flashcard-sidebar hr{width:100%;margin:16px 0;border:0;border-top:.5px solid var(--border)}.set-row{display:grid;gap:5px;padding:12px;border:.5px solid transparent;border-radius:8px;background:transparent;text-align:left;cursor:pointer}.set-row:hover,.set-row.active{border-color:var(--brand);background:var(--brand-soft)}.set-row small{color:var(--muted)}.flashcard-review{display:grid;min-height:620px;align-content:center;padding:40px clamp(20px,6vw,90px);background:var(--surface);border:.5px solid var(--border);border-radius:var(--radius)}.review-heading{margin-bottom:24px}.review-heading h2,.review-heading p{margin-bottom:0}.review-card{display:grid;width:100%;min-height:330px;place-items:center;align-content:center;gap:20px;padding:40px;border:.5px solid var(--border);border-radius:var(--radius);background:var(--inset);color:var(--text);cursor:pointer}.review-card.flipped{background:var(--brand-soft);border-color:var(--brand)}.review-card strong{max-width:640px;font-size:clamp(1.5rem,4vw,2.5rem);line-height:1.3;text-align:center}.review-card small,.card-face-label{color:var(--muted);font-size:.72rem}.review-controls{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:18px;margin-top:22px}.coming-soon{color:var(--muted);font-size:.75rem;text-align:center}.coming-soon span{display:inline-block;margin-left:7px;padding:3px 7px;border-radius:999px;background:#eeede8;font-size:.65rem}.progress-layout{display:grid;grid-template-columns:1.4fr .85fr;gap:18px}.trend-panel{min-width:0}.trend-chart{overflow-x:auto}.trend-chart svg{width:100%;min-width:520px}.chart-grid-line{stroke:#e8e7e1;stroke-width:1}.chart-line{fill:none;stroke:var(--brand);stroke-width:4;stroke-linecap:round;stroke-linejoin:round}.chart-point{fill:var(--surface);stroke:var(--brand);stroke-width:4}.trend-labels{display:grid;grid-template-columns:repeat(auto-fit,minmax(90px,1fr));gap:8px}.trend-labels span{display:grid;color:var(--muted);font-size:.67rem;text-align:center}.trend-labels strong{color:var(--brand);font-size:.9rem}.topic-columns{display:grid;gap:18px}.topic-row{display:grid;grid-template-columns:1fr auto;align-items:start;gap:15px;padding:14px 0;border-bottom:.5px solid var(--border)}.topic-row>div{min-width:0}.topic-row .score-bar-wrap{margin:9px 0 0}.score{font-size:1.1rem;font-weight:650}.success-text{color:var(--success)}.error-text{color:var(--error)}.filter-chips{flex:1}.history-list{overflow:hidden;background:var(--surface);border:.5px solid var(--border);border-radius:var(--radius)}.history-row{display:grid;grid-template-columns:42px minmax(0,1fr) 160px auto;align-items:center;gap:18px;padding:18px 20px;border-bottom:.5px solid var(--border)}.history-actions{display:flex;align-items:center;gap:10px}.history-row:last-child{border-bottom:0}.history-type{display:grid;width:36px;height:36px;place-items:center;border-radius:9px;background:var(--brand-soft);color:var(--brand);font-size:.68rem;font-weight:750}.history-main strong,.history-main span{display:block}.history-main span,.history-metadata{margin-top:4px;color:var(--muted);font-size:.74rem}.benchmark-page{--brand: var(--technical);--brand-soft: var(--technical-soft)}.benchmark-section{margin-top:54px}.benchmark-comparison{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.benchmark-run{padding:26px}.benchmark-run .metric-grid{margin:24px 0}.benchmark-run code,.methodology-card code{color:var(--technical);font-size:.72rem;overflow-wrap:anywhere}.methodology-card{margin-top:16px;padding:26px}.methodology-card dl,.settings-list{margin:0}.methodology-card dl>div,.settings-list>div{display:grid;grid-template-columns:140px 1fr;gap:20px;padding:12px 0;border-bottom:.5px solid var(--border)}.methodology-card dt,.settings-list dt{color:var(--muted);font-size:.76rem}.methodology-card dd,.settings-list dd{margin:0;color:var(--text);font-size:.84rem}.muted-benchmark{padding:30px;background:var(--technical-soft);border-radius:var(--radius)}.settings-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.settings-grid .card-panel:first-child{grid-column:1 / -1}.settings-list dd{display:flex;align-items:center;gap:8px}.mobile-drawer{position:absolute;top:0;right:0;display:grid;width:min(340px,88vw);height:100%;align-content:start;padding:22px;background:var(--surface)}.drawer-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;font-weight:650}.drawer-heading button{border:0;background:none;color:var(--brand)}.mobile-drawer>a{padding:14px 0;border-bottom:.5px solid var(--border)}@media(max-width:1120px){.desktop-nav{gap:12px}.desktop-nav a{font-size:.76rem}.study-layout{grid-template-columns:220px 1fr}.flashcard-layout.embedded{grid-template-columns:1fr}.evidence-panel{grid-column:1 / -1;display:grid;grid-template-columns:repeat(2,1fr);border-top:.5px solid var(--border);border-left:0}.evidence-panel>div:first-child,.evidence-actions{grid-column:1 / -1}}@media(max-width:900px){.desktop-nav,.utility-nav>a{display:none}.mobile-menu-button{display:grid!important}.top-nav{grid-template-columns:1fr auto}.page{width:min(100% - 32px,720px);padding-top:48px}.backend-status-strip{margin-top:-12px}.page-header{display:grid;align-items:start}.quick-actions,.metric-grid,.session-grid,.material-grid{grid-template-columns:repeat(2,1fr)}.quick-actions a:nth-child(2){border-right:0}.quick-actions a:nth-child(-n+2){border-bottom:.5px solid var(--border)}.home-lower-grid,.practice-layout,.progress-layout,.flashcard-layout,.benchmark-comparison{grid-template-columns:1fr}.study-layout{display:block}.study-sidebar,.evidence-panel{border:0;border-bottom:.5px solid var(--border)}.study-sidebar{display:grid;grid-template-columns:repeat(2,1fr)}.study-sidebar>div{grid-column:1 / -1}.message-list{min-height:480px;max-height:none}.evidence-panel{display:grid;grid-template-columns:repeat(2,1fr)}.mobile-bottom-nav{position:fixed;z-index:40;right:0;bottom:0;left:0;display:grid!important;grid-template-columns:repeat(4,1fr);min-height:66px;padding:7px 8px max(7px,env(safe-area-inset-bottom));background:#fffffff5;border-top:.5px solid var(--border);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.mobile-bottom-nav a,.mobile-bottom-nav button{display:grid;place-items:center;gap:3px;border:0;background:none;color:var(--muted);font-size:.63rem}.mobile-bottom-nav a.active{color:var(--brand)}.mobile-nav-mark{display:grid;width:24px;height:24px;place-items:center;border:.5px solid currentColor;border-radius:7px;font-weight:750}.app-main{padding-bottom:70px}.flashcard-review{min-height:520px}}@media(max-width:600px){h1{font-size:2.25rem}.page{width:min(100% - 24px,560px);padding-top:36px}.backend-status-strip{align-items:flex-start;gap:8px 12px;margin-top:-4px;margin-bottom:26px;flex-wrap:wrap}.backend-status-divider{display:none}.backend-wake-note{width:100%;padding-left:17px}.page-header{gap:24px;margin-bottom:34px}.page-actions,.page-actions .button{width:100%}.quick-actions,.metric-grid,.metric-grid.compact,.session-grid,.material-grid,.settings-grid{grid-template-columns:1fr}.quick-actions a{min-height:105px;border-right:0;border-bottom:.5px solid var(--border)}.quick-actions a:last-child{border-bottom:0}.home-lower-grid{display:block}.recommendation-card{margin-bottom:16px}.toolbar{display:grid}.toolbar label{min-width:0}.study-page{width:calc(100% - 16px)}.study-layout{border-radius:9px}.learn-guide{align-items:flex-start}.study-sidebar{display:block}.study-sidebar section{margin-top:24px}.conversation-heading{align-items:flex-start;padding:18px}.learn-mode-tabs{padding:10px}.learn-mode-tabs button{min-width:0;flex:1;padding:9px 8px}.embedded-tool{padding:14px}.conversation-heading .badge{display:none}.message-list{min-height:430px;padding:24px 18px}.question-composer,.evidence-panel{grid-template-columns:1fr}.evidence-panel>*{grid-column:1!important}.quiz-active-page{width:calc(100% - 24px)}.quiz-active-header,.review-heading{align-items:flex-start}.question-card{padding:20px}.sticky-actions{width:100%}.sticky-actions .button{flex:1}.result-summary-line,.result-row{grid-template-columns:1fr}.result-score{font-size:2.8rem}.flashcard-review{min-height:470px;padding:24px 16px}.review-card{min-height:290px;padding:28px 20px}.review-controls{grid-template-columns:repeat(2,1fr)}.coming-soon{grid-column:1 / -1;grid-row:2}.history-row{grid-template-columns:38px 1fr auto;gap:12px}.history-metadata{grid-column:2 / -1}.history-row .button{min-height:36px;padding:7px 10px}.methodology-card dl>div,.settings-list>div{grid-template-columns:1fr;gap:5px}}