@import"https://fonts.googleapis.com/css2?family=DM+Sans:wght@300;400;500;600;700;800&display=swap";.entry-screen{justify-content:center;padding:var(--space-xl) var(--space-lg)}.entry-card{display:flex;flex-direction:column;gap:var(--space-lg);max-width:520px;width:100%;box-shadow:var(--shadow-lg);position:relative;overflow:hidden}.entry-card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--accent) 0%,var(--accent-hover) 50%,var(--accent) 100%)}.entry-logo{font-family:var(--font-body);font-size:1rem;font-weight:800;letter-spacing:.25em;color:var(--accent);text-transform:uppercase;display:inline-flex;align-items:center;gap:var(--space-sm)}.entry-logo:before{content:"";width:28px;height:28px;border-radius:var(--radius-sm);background:linear-gradient(135deg,var(--accent) 0%,var(--accent-hover) 100%);box-shadow:0 4px 12px var(--accent-soft)}.entry-title{font-size:2.2rem;font-weight:800;margin-top:0;letter-spacing:-.02em;line-height:1.15;background:linear-gradient(135deg,var(--text-primary) 0%,var(--accent) 130%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}[data-theme=high-contrast] .entry-title,[data-theme=yellow-black] .entry-title{background:none;-webkit-text-fill-color:var(--text-primary);color:var(--text-primary)}.entry-subtitle{font-size:.85rem;color:var(--text-muted);margin-top:calc(-1 * var(--space-md));font-weight:600;letter-spacing:.15em;text-transform:uppercase}.entry-description{font-size:1rem;color:var(--text-secondary);line-height:1.7}.entry-form{display:flex;flex-direction:column;gap:var(--space-md)}.entry-label{font-size:.78rem;font-weight:700;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.12em}.entry-input{font-size:1.5rem;letter-spacing:.25em;text-align:center;font-weight:700;font-family:var(--font-body)}.entry-input.input-error{border-color:var(--error)}.entry-error{color:var(--error);font-size:.95rem;font-weight:500}.entry-hint{color:var(--text-muted);font-size:.9rem}.entry-btn{width:100%;justify-content:center;font-size:1.05rem;padding:16px;margin-top:var(--space-sm);min-height:56px}.entry-footer{font-size:.9rem;color:var(--text-muted);text-align:center;border-top:1px solid var(--border);padding-top:var(--space-lg)}.entry-link{color:var(--accent);text-decoration:underline}.entry-link:hover{color:var(--accent-hover)}.profile-screen{justify-content:flex-start;padding:var(--space-xl) var(--space-lg);max-width:800px}.profile-container{width:100%;display:flex;flex-direction:column;gap:var(--space-xl)}.profile-header{display:flex;flex-direction:column;gap:var(--space-md)}.profile-title{font-size:2.1rem;font-weight:800;letter-spacing:-.02em;background:linear-gradient(135deg,var(--text-primary) 0%,var(--accent) 120%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}[data-theme=high-contrast] .profile-title,[data-theme=yellow-black] .profile-title{background:none;-webkit-text-fill-color:var(--text-primary);color:var(--text-primary)}.profile-title:focus{outline:none}.profile-subtitle{font-size:1rem;color:var(--text-secondary);max-width:580px;line-height:1.7}.profile-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--space-md)}@media (max-width: 600px){.profile-grid{grid-template-columns:1fr}}.profile-card{cursor:pointer;display:flex;flex-direction:column;gap:var(--space-sm);padding:var(--space-lg);border:2px solid var(--border-strong, var(--border));border-radius:var(--radius-lg);background:var(--bg-surface);transition:transform var(--transition-fast),border-color var(--transition),background var(--transition),box-shadow var(--transition);-webkit-user-select:none;user-select:none;position:relative;overflow:hidden;box-shadow:var(--shadow-sm)}.profile-card:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(135deg,var(--accent-soft) 0%,transparent 60%);opacity:0;transition:opacity var(--transition);pointer-events:none}.profile-card:hover{border-color:var(--text-muted);transform:translateY(-2px);box-shadow:var(--shadow-md)}.profile-card:focus-visible{outline:3px solid var(--border-focus);outline-offset:3px}.profile-card--selected{border-color:var(--accent);background:var(--bg-elevated);box-shadow:var(--shadow-md),0 0 0 4px var(--accent-soft)}.profile-card--selected:before{opacity:1}.profile-card-header{display:flex;align-items:center;gap:var(--space-sm);position:relative}.profile-card-indicator{display:inline-flex;align-items:center;justify-content:center;font-size:.85rem;width:22px;height:22px;border-radius:50%;border:2px solid var(--text-muted);color:transparent;line-height:1;flex-shrink:0;transition:all var(--transition)}.profile-card--selected .profile-card-indicator{background:var(--accent);border-color:var(--accent);color:var(--bg)}.profile-card-label{font-family:var(--font-display);font-size:1.25rem;font-weight:700;color:var(--text-primary);letter-spacing:-.01em}.profile-card--selected .profile-card-label{color:var(--accent)}.profile-card-description{font-size:.95rem;color:var(--text-secondary);font-weight:500;line-height:1.5;position:relative}.profile-card-detail{font-size:.88rem;color:var(--text-muted);line-height:1.6;position:relative}.profile-actions{display:flex;flex-direction:column;gap:var(--space-md);align-items:flex-start}.profile-btn{min-width:280px;justify-content:center}.profile-selected-note{font-size:.9rem;color:var(--text-secondary)}.profile-selected-note strong{color:var(--accent)}.session-screen{min-height:100vh;display:flex;flex-direction:column;width:100%;padding:0}.session-loading{justify-content:flex-start;align-items:stretch;color:var(--text-secondary);padding-top:var(--space-2xl);gap:var(--space-xl);max-width:100%;width:100%;padding-left:var(--space-xl);padding-right:var(--space-xl)}.session-loading-text{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skeleton-stack{display:flex;flex-direction:column;gap:var(--space-xl);width:100%}.skeleton-row{display:flex;gap:var(--space-md);align-items:center}.skeleton-row--controls{margin-top:var(--space-2xl)}.skeleton{background:var(--bg-elevated);border-radius:var(--radius-sm);position:relative;overflow:hidden}.skeleton:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(90deg,transparent 0%,var(--accent-soft) 50%,transparent 100%);animation:skeleton-shimmer 1.6s ease-in-out infinite}@keyframes skeleton-shimmer{0%{transform:translate(-100%)}to{transform:translate(100%)}}.skeleton-bar{height:8px;border-radius:999px;width:30%}.skeleton-chip{height:32px;width:80px;border-radius:var(--radius-sm)}.skeleton-chip--sm{width:120px}.skeleton-card{height:180px;border-radius:var(--radius-lg);padding:var(--space-xl);display:flex;flex-direction:column;gap:var(--space-md);justify-content:center}.skeleton-card .skeleton{background:#ffffff0a}[data-theme=light] .skeleton-card .skeleton{background:#0000000f}.skeleton-line{height:18px;border-radius:var(--radius-sm);width:100%}.skeleton-line--lg{width:75%}.skeleton-line--md{width:55%}.skeleton-btn{flex:1;height:64px;border-radius:var(--radius-md)}@media (prefers-reduced-motion: reduce){.skeleton:after{animation:none!important;background:var(--accent-soft);opacity:.5}}.session-header{padding:0;background:var(--bg);z-index:10;border-bottom:1px solid var(--border);display:flex;flex-direction:column;gap:0;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.session-progress-bar{height:4px;background:var(--bg-elevated);border-radius:0;overflow:hidden;position:relative}.session-progress-fill{height:100%;background:linear-gradient(90deg,var(--accent) 0%,var(--accent-hover) 100%);border-radius:0;transition:width .6s cubic-bezier(.16,1,.3,1);box-shadow:0 0 12px var(--accent-soft);position:relative;overflow:hidden}.session-progress-fill:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(90deg,transparent 0%,rgba(255,255,255,.25) 50%,transparent 100%);animation:progress-shine 2.4s ease-in-out infinite}@keyframes progress-shine{0%{transform:translate(-100%)}to{transform:translate(100%)}}[data-theme=high-contrast] .session-progress-fill:after,[data-theme=yellow-black] .session-progress-fill:after{display:none}.session-meta{display:flex;align-items:center;gap:var(--space-md);font-size:.9rem;flex-wrap:wrap;padding:var(--space-md) var(--space-2xl)}.session-counter{font-weight:700;color:var(--text-primary);font-variant-numeric:tabular-nums;font-size:1rem;background:var(--bg-elevated);padding:4px 12px;border-radius:var(--radius-sm);border:1px solid var(--border)}.session-topic{color:var(--text-secondary);font-size:.85rem;font-weight:500;text-transform:uppercase;letter-spacing:.08em}.session-speaking{color:var(--accent);font-size:.85rem;font-weight:600;animation:pulse 1.2s ease-in-out infinite;background:var(--accent-soft);padding:4px 12px;border-radius:999px}.session-quit-btn{margin-left:auto;font-size:.85rem;padding:6px 14px;min-height:34px;color:var(--text-muted);border-color:var(--border-strong, var(--border));font-weight:500}.session-quit-btn:hover:not(:disabled){color:var(--error);border-color:var(--error);background:var(--error-soft)}@keyframes pulse{0%,to{opacity:1}50%{opacity:.4}}.quit-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000bf;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);display:flex;align-items:center;justify-content:center;z-index:100;padding:var(--space-lg);animation:overlay-fade .2s ease}@keyframes overlay-fade{0%{opacity:0}to{opacity:1}}.quit-dialog{background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:var(--space-xl);max-width:440px;width:100%;display:flex;flex-direction:column;gap:var(--space-lg);box-shadow:var(--shadow-lg);animation:dialog-pop .28s cubic-bezier(.16,1,.3,1)}@keyframes dialog-pop{0%{opacity:0;transform:scale(.92) translateY(8px)}to{opacity:1;transform:scale(1) translateY(0)}}.quit-dialog h2{font-size:1.3rem}.quit-dialog p{color:var(--text-secondary);font-size:.95rem;line-height:1.6}.quit-dialog-btns{display:flex;gap:var(--space-md)}.quit-dialog-btns .btn{flex:1;justify-content:center}.session-body{flex:1;padding:var(--space-lg) var(--space-2xl);display:flex;flex-direction:column;gap:var(--space-xl)}.math-expression-block{display:flex;flex-direction:column;gap:var(--space-md)}.math-katex{font-size:1.5rem;color:var(--text-primary);overflow-x:auto;padding:var(--space-md) 0;text-align:center}.math-katex .katex-display{margin:0}.math-spoken{font-size:1.1rem;color:var(--text-secondary);line-height:1.6;font-weight:500}.hint-content{flex:1;display:flex;flex-direction:column;gap:var(--space-sm);padding-top:2px}.hint-injection{font-size:.88rem;color:var(--text-muted);line-height:1.6;padding:var(--space-sm) var(--space-md);background:var(--bg-elevated);border-left:3px solid var(--accent);border-radius:var(--radius-sm);font-style:italic}.hint-output{font-size:1.1rem;font-weight:700;color:var(--accent);line-height:1.5;padding:var(--space-sm) var(--space-md);background:var(--accent-soft);border-radius:var(--radius-sm);display:inline-block}.problem-block{display:flex;flex-direction:column;gap:var(--space-md);padding:var(--space-xl) var(--space-xl) var(--space-xl) calc(var(--space-xl) + 4px);background:var(--bg-surface);border:none;border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);position:relative;overflow:hidden}.problem-block:before{content:"";position:absolute;top:0;left:0;width:4px;height:100%;background:linear-gradient(180deg,var(--accent) 0%,var(--accent-hover) 100%)}.problem-statement{font-family:var(--font-display);font-size:1.85rem;font-weight:600;line-height:1.5;color:var(--text-primary);letter-spacing:-.01em}.problem-statement:focus{outline:none}.problem-read-btn{align-self:flex-start;font-size:.88rem;font-weight:600;padding:8px 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var(--border);display:flex;flex-direction:column;gap:var(--space-md);background:var(--bg)}.controls-row{display:flex;gap:var(--space-md);align-items:center}.control-btn{flex:1;justify-content:center;flex-direction:column;gap:4px;padding:18px 12px;font-size:1.05rem;min-height:64px}.control-btn-meta{font-size:.72rem;opacity:.7;font-weight:500;letter-spacing:.04em}.control-btn-placeholder{flex:1}.keyboard-guide{display:flex;gap:var(--space-md);flex-wrap:wrap;font-size:.78rem;color:var(--text-muted);padding-top:var(--space-sm);border-top:1px dashed var(--border)}.keyboard-guide span{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-sm);font-weight:500}@media (max-width: 768px){.session-screen,.session-header{padding:0}.session-meta{padding:var(--space-md) var(--space-lg)}.session-body{padding:var(--space-xl) var(--space-lg)}.session-controls{padding:var(--space-lg) var(--space-lg) var(--space-xl)}.session-meta{gap:var(--space-sm);row-gap:var(--space-sm)}.session-counter{font-size:.95rem;padding:3px 10px}.session-topic{font-size:.78rem;flex:1 1 100%;order:5}.session-profile-selector{padding:3px 8px}.session-profile-label{font-size:.72rem}.control-btn{padding:14px 8px;font-size:.95rem;min-height:56px}.problem-block{padding:var(--space-lg)}.problem-statement{font-size:1.45rem}}@media (max-width: 480px){.session-screen,.session-header{padding:0}.session-meta{padding:var(--space-sm) var(--space-md)}.session-body{padding:var(--space-lg) var(--space-md)}.session-controls{padding:var(--space-md) var(--space-md) var(--space-lg)}.session-header{padding:var(--space-sm) 0;gap:var(--space-sm)}.session-meta{gap:6px}.session-counter{font-size:.88rem;padding:3px 8px}.session-quit-btn{padding:5px 10px;font-size:.8rem}.problem-block{padding:var(--space-md)}.problem-statement{font-size:1.25rem}.hint-item{padding:var(--space-md);gap:var(--space-sm)}.hint-text{font-size:.98rem}.controls-row{gap:var(--space-sm);flex-wrap:wrap}.control-btn{padding:12px 8px;font-size:.9rem;min-height:52px}.keyboard-guide{font-size:.72rem;gap:6px}.keyboard-guide span{padding:2px 6px}}.session-profile-selector{display:flex;align-items:center;gap:6px;padding:4px 10px;background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-md)}.session-profile-label{font-size:.78rem;color:var(--text-muted);white-space:nowrap;text-transform:uppercase;letter-spacing:.06em;font-weight:600}.session-profile-select{font-family:var(--font-body);font-size:.88rem;font-weight:600;padding:4px 8px;background:transparent;color:var(--accent);border:none;border-radius:var(--radius-sm);cursor:pointer;min-height:30px;transition:color var(--transition)}.session-profile-select:hover{color:var(--accent-hover)}.session-profile-select:focus{outline:2px solid var(--border-focus);outline-offset:2px}.complete-screen{justify-content:center;padding:var(--space-xl) var(--space-lg)}.complete-card{display:flex;flex-direction:column;gap:var(--space-lg);max-width:540px;width:100%;text-align:center;align-items:center;box-shadow:var(--shadow-lg);position:relative;overflow:hidden}.complete-card:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--accent) 0%,var(--accent-hover) 100%)}.complete-icon{width:84px;height:84px;border-radius:50%;background:linear-gradient(135deg,var(--accent) 0%,var(--accent-hover) 100%);color:var(--bg);font-size:2.4rem;display:flex;align-items:center;justify-content:center;font-weight:700;box-shadow:0 8px 32px var(--accent-soft),0 0 0 8px var(--accent-soft);animation:complete-pop .6s cubic-bezier(.16,1,.3,1)}@keyframes complete-pop{0%{opacity:0;transform:scale(.5) rotate(-15deg)}60%{opacity:1;transform:scale(1.1) rotate(5deg)}to{opacity:1;transform:scale(1) rotate(0)}}.complete-title{font-size:2.2rem;font-weight:800;letter-spacing:-.02em}.complete-title:focus{outline:none}.complete-message{font-size:1.1rem;color:var(--text-secondary)}.complete-next{font-size:1rem;color:var(--text-secondary);line-height:1.7;background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-md);padding:var(--space-lg);width:100%;text-align:left}.complete-next strong{color:var(--text-primary)}.complete-btn{width:100%;justify-content:center;font-size:1.05rem;padding:16px}.complete-alt{font-size:.85rem;color:var(--text-muted);word-break:break-all;text-align:center}.complete-link{color:var(--accent);text-decoration:underline;word-break:break-all}.complete-link:hover{color:var(--accent-hover)}.complete-footer{width:100%;border-top:1px solid var(--border);padding-top:var(--space-lg);display:flex;flex-direction:column;gap:var(--space-sm)}.complete-footer p{font-size:.9rem;color:var(--text-muted);text-align:center}.complete-pid{font-size:.85rem!important;color:var(--text-muted)}.complete-pid strong{color:var(--text-secondary);font-variant-numeric:tabular-nums}.a11y-bar{position:sticky;top:0;z-index:50;width:100%;background:var(--bg-elevated);border-bottom:1px solid var(--border);display:flex;align-items:center;gap:var(--space-sm);padding:8px var(--space-2xl);flex-wrap:wrap;min-height:48px;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);box-shadow:var(--shadow-sm)}.a11y-group{display:flex;align-items:center;gap:4px}.a11y-divider{width:1px;height:20px;background:var(--border);margin:0 var(--space-xs)}.a11y-btn{font-family:var(--font-body);font-size:.82rem;font-weight:600;padding:5px 12px;min-height:32px;border:1px solid var(--border-strong, var(--border));border-radius:var(--radius-md);background:var(--bg-surface);color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast);white-space:nowrap}.a11y-btn:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}.a11y-btn:focus-visible{outline:2px solid var(--border-focus);outline-offset:2px}.a11y-size-label{font-size:.78rem;color:var(--text-secondary);min-width:36px;text-align:center;font-variant-numeric:tabular-nums;font-weight:600}.a11y-theme-group{position:relative}.a11y-theme-btn{gap:4px}.a11y-theme-menu{position:absolute;top:calc(100% + 6px);left:0;background:var(--bg-surface);border:1px solid var(--border-strong, var(--border));border-radius:var(--radius-md);list-style:none;min-width:200px;z-index:100;box-shadow:var(--shadow-md);overflow:hidden;animation:menu-pop .18s cubic-bezier(.16,1,.3,1)}@keyframes menu-pop{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.a11y-theme-option{padding:10px 16px;font-size:.9rem;color:var(--text-secondary);cursor:pointer;transition:background var(--transition)}.a11y-theme-option:hover{background:var(--bg-elevated);color:var(--text-primary)}.a11y-theme-option--active{color:var(--accent);background:var(--bg-elevated)}.a11y-theme-option:focus-visible{outline:2px solid var(--border-focus);outline-offset:-2px}.a11y-mic-btn{transition:all var(--transition)}.a11y-mic-btn--active{color:var(--accent);border-color:var(--accent);animation:mic-pulse 2s ease-in-out infinite}@keyframes mic-pulse{0%,to{opacity:1}50%{opacity:.6}}.a11y-no-voice{font-size:.78rem;color:var(--text-muted)}.a11y-last-command{font-size:.78rem;color:var(--accent);margin-left:var(--space-xs)}.a11y-shortcuts{margin-left:auto;display:flex;gap:var(--space-sm);font-size:.72rem;color:var(--text-muted);align-items:center}.a11y-shortcuts span{cursor:help;padding:3px 8px;background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-sm);font-weight:500;transition:color var(--transition-fast),border-color var(--transition-fast)}.a11y-shortcuts span:hover{color:var(--text-secondary);border-color:var(--text-muted)}@media (max-width: 600px){.a11y-shortcuts{display:none}.a11y-bar{padding:6px var(--space-md)}}:root{--bg: #0d0d0d;--bg-surface: #181818;--bg-elevated: #242424;--text-primary: #f5f2eb;--text-secondary: #b8b1a4;--text-muted: #a89f93;--accent: #e8c547;--accent-hover: #f0d060;--accent-soft: rgba(232, 197, 71, .12);--border: #2e2e2e;--border-strong: #3a3a3a;--border-focus: #e8c547;--error: #e05c5c;--error-soft: rgba(224, 92, 92, .12);--success: #5cb85c;--font-display: "DM Sans", system-ui, sans-serif;--font-body: "DM Sans", system-ui, sans-serif;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 16px;--space-xs: 4px;--space-sm: 8px;--space-md: 16px;--space-lg: 24px;--space-xl: 40px;--space-2xl: 64px;--shadow-sm: 0 2px 8px rgba(0, 0, 0, .25);--shadow-md: 0 8px 24px rgba(0, 0, 0, .35);--shadow-lg: 0 16px 48px rgba(0, 0, 0, .45);--transition: .2s ease;--transition-fast: .12s ease}[data-theme=light]{--bg: #f7f4ee;--bg-surface: #ffffff;--bg-elevated: #ede8de;--text-primary: #1a1612;--text-secondary: #2e2925;--text-muted: #5a5550;--accent: #b86a14;--accent-hover: #9d590f;--accent-soft: rgba(184, 106, 20, .14);--border: #d4cec2;--border-strong: #b8b0a0;--border-focus: #b86a14;--error: #c64545;--error-soft: rgba(198, 69, 69, .12);--shadow-sm: 0 2px 8px rgba(60, 40, 20, .1);--shadow-md: 0 10px 30px rgba(60, 40, 20, .14);--shadow-lg: 0 20px 56px rgba(60, 40, 20, .2)}[data-theme=high-contrast]{--bg: #000000;--bg-surface: #000000;--bg-elevated: #111111;--text-primary: #ffffff;--text-secondary: #ffffff;--text-muted: #cccccc;--accent: #ffff00;--accent-hover: #ffff66;--border: #ffffff;--border-focus: #ffff00}[data-theme=yellow-black]{--bg: #000000;--bg-surface: #111100;--bg-elevated: #1a1a00;--text-primary: #ffff00;--text-secondary: #ffdd00;--text-muted: #aa9900;--accent: #ffffff;--accent-hover: #ffffcc;--border: #555500;--border-focus: #ffffff}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:18px;-webkit-text-size-adjust:100%}body{font-family:var(--font-body);background:var(--bg);color:var(--text-primary);line-height:1.6;min-height:100vh;transition:background var(--transition),color var(--transition);background-image:radial-gradient(circle at 15% -10%,var(--accent-soft) 0%,transparent 45%),radial-gradient(circle at 100% 110%,var(--accent-soft) 0%,transparent 50%);background-attachment:fixed}[data-theme=high-contrast] body,[data-theme=yellow-black] body{background-image:none}.app{min-height:100vh;display:flex;flex-direction:column}*:focus-visible{outline:3px solid var(--border-focus);outline-offset:3px;border-radius:var(--radius-sm)}h1,h2,h3{font-family:var(--font-body);font-weight:700;line-height:1.2;color:var(--text-primary);letter-spacing:-.01em}h1{font-size:2.4rem}h2{font-size:1.8rem}h3{font-size:1.3rem}p{color:var(--text-secondary);line-height:1.7}.btn{font-family:var(--font-body);font-size:1rem;font-weight:600;padding:14px 28px;border-radius:var(--radius-md);border:2px solid transparent;cursor:pointer;transition:transform var(--transition-fast),background var(--transition),border-color var(--transition),box-shadow var(--transition),color var(--transition);display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);text-decoration:none;min-height:52px;letter-spacing:.01em;position:relative;will-change:transform}.btn:active:not(:disabled){transform:translateY(1px)}.btn-primary{background:var(--accent);color:var(--bg);border-color:var(--accent);box-shadow:0 4px 16px var(--accent-soft)}.btn-primary:hover:not(:disabled){background:var(--accent-hover);border-color:var(--accent-hover);transform:translateY(-1px);box-shadow:0 6px 20px var(--accent-soft)}.btn-secondary{background:transparent;color:var(--text-primary);border-color:var(--border-strong, var(--border))}.btn-secondary:hover:not(:disabled){border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}.btn-danger{background:var(--error);color:#fff;border-color:var(--error);box-shadow:0 4px 16px var(--error-soft)}.btn-danger:hover:not(:disabled){background:#c44848;border-color:#c44848;transform:translateY(-1px)}.btn:disabled{opacity:1;cursor:not-allowed;box-shadow:none;background:var(--bg-elevated);color:var(--text-muted);border-color:var(--border);transform:none}.btn-primary:disabled,.btn-secondary:disabled,.btn-danger:disabled{background:var(--bg-elevated);color:var(--text-muted);border-color:var(--border)}.btn:disabled:hover{transform:none;box-shadow:none}.input{font-family:var(--font-body);font-size:1.1rem;padding:14px 18px;background:var(--bg-surface);color:var(--text-primary);border:2px solid var(--border-strong, var(--border));border-radius:var(--radius-md);width:100%;transition:border-color var(--transition),box-shadow var(--transition),background var(--transition);min-height:52px}.input:hover:not(:disabled){border-color:var(--text-muted)}.input:focus{outline:none;border-color:var(--border-focus);box-shadow:0 0 0 4px var(--accent-soft)}.input::placeholder{color:var(--text-muted)}.screen{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--space-xl) var(--space-lg);max-width:680px;margin:0 auto;width:100%}.card{background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:var(--space-xl);width:100%;box-shadow:var(--shadow-md)}::selection{background:var(--accent);color:var(--bg)}::-moz-selection{background:var(--accent);color:var(--bg)}kbd{display:inline-flex;align-items:center;justify-content:center;font-family:var(--font-body);font-size:.78em;font-weight:700;min-width:22px;height:22px;padding:0 6px;background:var(--bg-elevated);color:var(--text-primary);border:1px solid var(--border-strong, var(--border));border-bottom-width:2px;border-radius:var(--radius-sm);box-shadow:0 1px #0003;line-height:1;vertical-align:middle;letter-spacing:.02em}.btn-primary kbd{background:#0000002e;color:var(--bg);border-color:#00000047}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}.btn:hover:not(:disabled),.profile-card:hover{transform:none!important}.session-progress-fill:after,.session-speaking,.a11y-mic-btn--active{animation:none!important}}*{scrollbar-width:thin;scrollbar-color:var(--border-strong, var(--border)) transparent}*::-webkit-scrollbar{width:10px;height:10px}*::-webkit-scrollbar-track{background:transparent}*::-webkit-scrollbar-thumb{background:var(--border-strong, var(--border));border-radius:999px;border:2px solid var(--bg)}*::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.skip-link{position:absolute;top:-100px;left:var(--space-md);background:var(--accent);color:var(--bg);padding:var(--space-sm) var(--space-md);border-radius:var(--radius-md);font-weight:600;z-index:9999;transition:top var(--transition)}.skip-link:focus{top:var(--space-md)}.error-boundary{justify-content:center}.error-boundary-card{display:flex;flex-direction:column;gap:var(--space-lg);max-width:540px;width:100%;text-align:center;align-items:center;box-shadow:var(--shadow-lg);position:relative;overflow:hidden}.error-boundary-card:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--error)}.error-boundary-icon{width:72px;height:72px;border-radius:50%;background:var(--error-soft);color:var(--error);font-size:2.4rem;font-weight:800;display:flex;align-items:center;justify-content:center;border:2px solid var(--error)}.error-boundary-title{font-size:1.8rem;font-weight:800;letter-spacing:-.01em}.error-boundary-message{font-size:1rem;color:var(--text-secondary);line-height:1.7}.error-boundary-actions{display:flex;gap:var(--space-md);width:100%;margin-top:var(--space-sm)}.error-boundary-actions .btn{flex:1;justify-content:center}.error-boundary-help{font-size:.9rem;color:var(--text-muted);border-top:1px solid var(--border);padding-top:var(--space-lg);width:100%}.error-boundary-link{color:var(--accent);text-decoration:underline}.error-boundary-link:hover{color:var(--accent-hover)}