:root{color-scheme:dark;font-family:Helvetica Neue,Helvetica,Arial,system-ui,-apple-system,sans-serif;line-height:1.6;font-weight:400;background:#0a0a0c;color:#e8e8ea;--color-bg-primary: #0a0a0c;--color-bg-secondary: #121216;--color-bg-tertiary: #1a1a1f;--color-border-subtle: rgba(244, 244, 245, .08);--color-border-default: rgba(244, 244, 245, .12);--color-text-primary: #f4f4f5;--color-text-secondary: #a1a1aa;--color-text-muted: #71717a;--color-accent-warm: #d4a574;--color-success: #86efac;--color-error: #fca5a5;--color-info: #93c5fd;--shadow-ambient: 0 20px 60px rgba(0, 0, 0, .45);--shadow-card: 0 4px 24px rgba(0, 0, 0, .35)}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background:radial-gradient(ellipse at 50% 0%,rgba(212,165,116,.06),transparent 55%),radial-gradient(ellipse at 80% 100%,rgba(100,100,110,.08),transparent 40%),linear-gradient(180deg,#0f0f12,#0a0a0c 60%,#08080a)}button,input,textarea{font:inherit}button{touch-action:manipulation}input{font-size:16px}#app{min-height:100vh}.app-shell{min-height:100vh;width:min(100%,42rem);margin:0 auto;padding:20px 16px 48px}@media(min-width:641px){.app-shell{padding:32px 24px 64px}}.panel,.progress-card{padding:20px;border:1px solid var(--color-border-default);border-radius:16px;background:#121216e6;box-shadow:var(--shadow-ambient)}@media(min-width:641px){.panel,.progress-card{padding:24px;border-radius:20px}}.app-header{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:16px;flex-wrap:wrap}@media(max-width:480px){.app-header{flex-direction:column;align-items:stretch}}.shell-title{margin:0;font-size:clamp(1.6rem,5vw,2.4rem);font-weight:700;letter-spacing:-.02em}.progress-card{margin-bottom:16px}.eyebrow{margin:0 0 8px;font-size:.7rem;letter-spacing:.2em;text-transform:uppercase;color:var(--color-accent-warm);font-weight:500}.panel h1,.panel h2{margin:0;line-height:1.2;font-weight:700;letter-spacing:-.01em}.lede{margin:12px 0 0;color:var(--color-text-secondary);font-size:1.05rem}.briefing-copy,.stage-puzzle,.progress-copy,.reward-warning{margin:16px 0 0;color:var(--color-text-secondary)}.field-label{display:block;margin:16px 0 8px;font-size:.875rem;color:var(--color-text-secondary)}input{width:100%;padding:14px 16px;border:1px solid var(--color-border-default);border-radius:12px;background:#0a0a0ce6;color:inherit;transition:border-color .15s ease,box-shadow .15s ease}input:focus{outline:none;border-color:var(--color-accent-warm);box-shadow:0 0 0 3px #d4a57426}.primary-button,.secondary-button{margin-top:16px;padding:14px 20px;border-radius:999px;border:1px solid transparent;background:var(--color-bg-tertiary);color:inherit;cursor:pointer;font-weight:500;transition:transform .1s ease,background .15s ease;min-height:48px}.primary-button:active,.secondary-button:active{transform:scale(.98)}.primary-button{background:var(--color-text-primary);color:var(--color-bg-primary)}.primary-button:hover{background:#fff}.secondary-button{border-color:var(--color-border-default)}.secondary-button:hover{background:#f4f4f514}form .primary-button{width:100%}.inline-button{margin-top:0}.hint-panel{margin-top:20px;padding-top:20px;border-top:1px solid var(--color-border-subtle)}.hint-header{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.hint-header h3{margin:0;font-size:.95rem;font-weight:600}.hint-list{margin:16px 0 0;padding-left:20px;color:var(--color-text-secondary)}.hint-list li{margin-bottom:8px;line-height:1.5}.hint-list li:last-child{margin-bottom:0}.feedback{margin:16px 0 0;padding:12px 16px;border-radius:10px;background:#f4f4f50d;color:var(--color-text-secondary)}.success-feedback{background:#86efac1a;border:1px solid rgba(134,239,172,.2)}.success-feedback:before{content:"[OK] ";font-weight:600}.error-feedback{background:#fca5a51a;border:1px solid rgba(252,165,165,.2)}.error-feedback:before{content:"[X] ";font-weight:600}.status-indicator{display:inline-flex;align-items:center;gap:8px}.status-indicator[data-status=success]:before{content:"[OK] Success:";font-weight:700;color:var(--color-success)}.status-indicator[data-status=error]:before{content:"[X] Error:";font-weight:700;color:var(--color-error)}.solved-card{margin-bottom:16px}.solved-card .eyebrow:before{content:"[DONE] ";color:var(--color-success);font-weight:600}.reward-card-shell{margin-top:20px;padding:16px;border-radius:16px;background:#0a0a0cf2;border:1px solid var(--color-border-subtle)}.reward-card-image{display:block;width:100%;max-width:20rem;margin:0 auto;border-radius:8px}.reward-qr-section{margin-top:20px}.reward-qr-wrap{position:relative;margin-top:12px;display:grid;place-items:center;padding:14px;border-radius:16px;background:#ffffff0f;border:1px dashed var(--color-border-default)}.reward-qr-image{width:min(82vw,280px);height:auto;border-radius:14px;background:#fff;padding:8px}.reward-emoji{position:absolute;font-size:1.3rem}.reward-emoji-a{top:4px;left:8px}.reward-emoji-b{top:4px;right:8px}.reward-emoji-c{bottom:4px;left:8px}.reward-emoji-d{bottom:4px;right:8px}.stage-table{width:100%;border-collapse:collapse;margin:16px 0;font-size:.9rem}.stage-table th,.stage-table td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--color-border-subtle)}.stage-table th{font-weight:600;color:var(--color-text-secondary);font-size:.8rem;text-transform:uppercase;letter-spacing:.05em}.line-list,.block-list{margin:16px 0;padding-left:24px}.line-list li,.block-list li{margin-bottom:8px;line-height:1.6}.stage-detail-block{margin:16px 0;padding:16px;background:#f4f4f508;border-radius:10px;border-left:3px solid var(--color-accent-warm)}.stage-detail-block p{margin:0 0 8px}.stage-detail-block p:last-child{margin-bottom:0}.solved-stack{margin-bottom:16px}.reset-confirm-overlay{position:fixed;inset:0;background:#000000b3;display:flex;align-items:center;justify-content:center;padding:20px;z-index:100}.reset-confirm-dialog{background:var(--color-bg-secondary);border:1px solid var(--color-border-default);border-radius:16px;padding:24px;max-width:360px;width:100%;box-shadow:var(--shadow-ambient)}.reset-confirm-dialog h3{margin:0 0 12px;font-size:1.1rem}.reset-confirm-dialog p{margin:0 0 20px;color:var(--color-text-secondary);font-size:.95rem}.reset-confirm-actions{display:flex;gap:12px}.reset-confirm-actions button{flex:1;margin-top:0}@media(max-width:640px){.app-shell{padding:16px 12px 40px}.app-header,.hint-header{align-items:flex-start}.secondary-button,.inline-button{width:100%}.panel,.progress-card{padding:16px;border-radius:14px}.shell-title{font-size:clamp(1.4rem,6vw,1.9rem)}.stage-table{font-size:.85rem}.stage-table th,.stage-table td{padding:8px}}@media(max-width:400px){.app-shell{padding:12px 10px 32px}.panel,.progress-card{padding:14px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}