:root{--bg-page:#e8e8e8;--bg-frame:#fff;--bg-subtle:#f8f8f8;--bg-muted:#efefef;--bg-dark:#161616;--bg-dark-subtle:#242424;--text-primary:#111;--text-secondary:#555;--text-tertiary:#888;--text-inverted:#fff;--text-inverted-muted:#aaa;--border-light:#e2e2e2;--border-medium:#ccc;--border-dark:#111;--border-dashed:#999;--spine-color:#111;--spine-node:#000;--spine-glow:#e0e0e0;--badge-bg:#111;--badge-text:#fff;--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-mono:ui-monospace, "SF Mono", Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--space-xs:4px;--space-sm:8px;--space-md:16px;--space-lg:24px;--space-xl:32px;--space-xxl:48px}*,:before,:after{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-page);color:var(--text-primary);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;margin:0;padding:0;font-size:14px;line-height:1.5}.shape-nav-bar{color:#fff;z-index:1000;background:#111;border-bottom:2px solid #333;justify-content:space-between;align-items:center;padding:12px 24px;display:flex;position:sticky;top:0}.shape-nav-brand{align-items:center;gap:12px;display:flex}.shape-nav-logo{font-family:var(--font-mono);letter-spacing:.05em;color:#111;background:#fff;border-radius:2px;padding:2px 8px;font-size:13px;font-weight:700}.shape-nav-title{color:#ccc;font-size:13px}.shape-nav-links{align-items:center;gap:8px;display:flex}.shape-nav-link{font-family:var(--font-mono);color:#bbb;background:#222;border:1px solid #444;border-radius:3px;padding:6px 12px;font-size:12px;text-decoration:none;transition:all .15s}.shape-nav-link:hover{color:#fff;background:#333;border-color:#777}.shape-nav-link.active{color:#111;background:#fff;border-color:#fff;font-weight:700}.shape-header-card{border-bottom:1px solid var(--border-medium);background:#fff;margin-bottom:24px;padding:24px 32px}.shape-meta-row{justify-content:space-between;align-items:flex-start;margin-bottom:12px;display:flex}.shape-badge{font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.08em;background:var(--badge-bg);color:var(--badge-text);border-radius:2px;padding:3px 8px;font-size:11px;display:inline-block}.shape-heading{color:var(--text-primary);letter-spacing:-.02em;margin-top:4px;font-size:24px;font-weight:700}.shape-tagline{color:var(--text-secondary);margin-top:2px;font-size:15px}.shape-bet-grid{border-top:1px solid var(--border-light);grid-template-columns:1fr 1fr;gap:20px;margin-top:16px;padding-top:16px;display:grid}.bet-box{background:var(--bg-subtle);border:1px solid var(--border-light);border-radius:4px;padding:14px 16px}.bet-box-title{font-family:var(--font-mono);text-transform:uppercase;color:var(--text-secondary);margin-bottom:6px;font-size:11px;font-weight:700}.bet-box-text{color:var(--text-primary);font-size:13px;line-height:1.45}.dual-viewport-stage{grid-template-columns:minmax(700px,1fr) 420px 340px;align-items:start;gap:24px;max-width:1720px;margin:0 auto;padding:0 24px 64px;display:grid}@media (width<=1400px){.dual-viewport-stage{grid-template-columns:1fr 420px}.annotations-sidebar{order:3;grid-column:1/-1}}@media (width<=1100px){.dual-viewport-stage{grid-template-columns:1fr}}.frame-container{border:1px solid var(--border-medium);background:#fff;border-radius:6px;overflow:hidden;box-shadow:0 4px 20px #0000000f}.frame-header{border-bottom:1px solid var(--border-medium);font-family:var(--font-mono);color:var(--text-secondary);background:#f0f0f0;justify-content:space-between;align-items:center;padding:10px 16px;font-size:12px;display:flex}.frame-dots{gap:6px;display:flex}.frame-dot{background:#ccc;border-radius:50%;width:8px;height:8px}.frame-canvas{background:#fff;position:relative;overflow:visible}.annotations-sidebar{border:1px solid var(--border-medium);background:#fff;border-radius:6px;padding:20px;position:sticky;top:70px}.annotations-title{font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.05em;border-bottom:1px solid var(--border-medium);margin-bottom:14px;padding-bottom:10px;font-size:13px;font-weight:700}.annotation-item{border-bottom:1px dashed var(--border-light);margin-bottom:16px;padding-bottom:14px}.annotation-item:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0}.annotation-header{align-items:center;gap:8px;margin-bottom:4px;display:flex}.note-num{color:#fff;width:20px;height:20px;font-family:var(--font-mono);background:#111;border-radius:50%;justify-content:center;align-items:center;font-size:11px;font-weight:700;display:inline-flex}.note-title{color:var(--text-primary);font-size:13px;font-weight:700}.note-body{color:var(--text-secondary);margin-top:2px;font-size:12px;line-height:1.45}.locked-brand{font-family:var(--font-mono);letter-spacing:.1em;text-transform:uppercase;font-size:13px;font-weight:800}.locked-tagline{color:var(--text-secondary);font-size:11px;font-family:var(--font-mono)}.locked-hero-question{letter-spacing:-.02em;color:var(--text-primary);margin-bottom:8px;font-size:28px;font-weight:700;line-height:1.2}.locked-section-title{letter-spacing:-.01em;color:var(--text-primary);font-size:18px;font-weight:700}.grey-block{background:var(--bg-subtle);border:1px solid var(--border-medium);color:var(--text-secondary);font-size:12px;font-family:var(--font-mono);border-radius:4px;padding:12px 14px;position:relative}.grey-block-dark{color:#ccc;background:#1e1e1e;border:1px solid #333}.grey-block-label{text-transform:uppercase;letter-spacing:.05em;color:var(--text-primary);margin-bottom:4px;font-size:11px;font-weight:700;display:block}.grey-block-dark .grey-block-label{color:#fff}.grey-lines{flex-direction:column;gap:6px;margin-top:8px;display:flex}.grey-line{background:var(--border-light);border-radius:2px;height:8px}.grey-line-short{width:45%}.grey-line-med{width:70%}.grey-line-long{width:90%}.grey-line-full{width:100%}.grey-block-dark .grey-line{background:#333}.sketch-milestone{border:2px solid var(--border-dark);background:#fdfdfd;border-radius:4px;padding:14px;position:relative;box-shadow:2px 2px #00000014}.sketch-tag{font-family:var(--font-mono);text-transform:uppercase;color:#fff;background:#111;border-radius:2px;margin-bottom:6px;padding:2px 6px;font-size:10px;font-weight:700;display:inline-block}.sketch-title{color:#111;margin-bottom:4px;font-size:13px;font-weight:700}.sketch-wireframe-art{border:1px dashed var(--border-medium);height:90px;font-size:11px;font-family:var(--font-mono);color:var(--text-tertiary);background:#fbfbfb;border-radius:2px;flex-direction:column;justify-content:center;align-items:center;gap:4px;margin-top:8px;display:flex}.spine-track-line{background:var(--spine-color);z-index:10;position:absolute}.spine-node-point{background:var(--spine-node);z-index:20;border:3px solid #fff;border-radius:50%;width:14px;height:14px;position:absolute;box-shadow:0 0 0 1px #111}.spine-node-badge{font-family:var(--font-mono);color:#fff;background:#111;border-radius:3px;align-items:center;gap:4px;padding:2px 6px;font-size:10px;font-weight:700;display:inline-flex}.living-mark-pill{font-family:var(--font-mono);border:1px solid var(--border-dark);background:#fff;border-radius:3px;align-items:center;gap:6px;padding:4px 8px;font-size:11px;font-weight:700;display:inline-flex}.living-mark-glyph{font-size:12px}.mark-return-tray{border:1px solid var(--border-dark);background:#f4f4f4;border-radius:4px;padding:10px 12px}.tray-title{font-family:var(--font-mono);text-transform:uppercase;color:var(--text-secondary);align-items:center;gap:4px;margin-bottom:6px;font-size:10px;font-weight:700;display:flex}.tray-chips{flex-wrap:wrap;gap:6px;display:flex}.tray-chip{font-family:var(--font-mono);border:1px solid var(--border-medium);color:var(--text-primary);background:#fff;border-radius:3px;padding:3px 6px;font-size:10px}.sticky-chapter-box{border:1px solid var(--border-dark);background:#fff;border-radius:3px;padding:8px 12px;position:relative}.sticky-label-badge{font-family:var(--font-mono);text-transform:uppercase;color:#fff;background:#333;border-radius:2px;margin-bottom:3px;padding:1px 4px;font-size:9px;display:inline-block}.simulator-box{background:#fafafa;border:2px dashed #444;border-radius:4px;margin:12px 0;padding:14px}.sim-header{justify-content:space-between;align-items:center;margin-bottom:10px;display:flex}.sim-controls{gap:8px;margin-top:8px;display:flex}.sim-btn{font-family:var(--font-mono);border:1px solid var(--border-medium);background:#fff;border-radius:3px;padding:4px 8px;font-size:11px}.sim-btn.active{color:#fff;background:#111;border-color:#111}.mobile-canvas{background:#fff;width:390px;margin:0 auto;padding:16px;font-size:12px}.mobile-canvas .locked-hero-question{font-size:20px}.mobile-canvas .sketch-wireframe-art{height:70px}.mobile-stack-section{border-bottom:1px solid var(--border-light);margin-bottom:24px;padding-bottom:20px;position:relative}.mobile-stack-section:last-child{border-bottom:none}