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linear-gradient(135deg, rgba(48, 74, 134, .16), rgba(109, 90, 126, .1) 52%, rgba(255, 255, 255, .72));--tb-wash-card: linear-gradient(145deg, rgba(48, 74, 134, .09), rgba(109, 90, 126, .05) 55%, rgba(255, 255, 255, .74));--tb-content-max: 1280px;--tb-brief-measure: 42rem}[data-theme=dark]{--tb-bg-canvas: #080a12;--tb-bg-elevated: #111625;--tb-bg-subtle: #1b2234;--tb-bg-soft: #151b2b;--tb-fg-primary: #f8fafc;--tb-fg-secondary: #c6cad5;--tb-fg-muted: #9ba3b4;--tb-fg-faint: #70798d;--tb-accent: #91b4ff;--tb-accent-hover: #b7ccff;--tb-accent-soft: rgba(145, 180, 255, .16);--tb-accent-contrast: #071022;--tb-tertiary: #d2b8df;--tb-border: rgba(248, 250, 252, .11);--tb-border-strong: rgba(248, 250, 252, .19);--tb-wash-hero: linear-gradient(135deg, rgba(145, 180, 255, .18), rgba(210, 184, 223, .1) 52%, rgba(17, 22, 37, .72));--tb-wash-card: linear-gradient(145deg, rgba(145, 180, 255, .13), rgba(210, 184, 223, .07) 55%, rgba(17, 22, 37, 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