:root{--header-height: 82px;color-scheme:light;--bg: #f8fafc;--surface: #ffffff;--surface-2: #f1f5f9;--surface-3: #eaf8f5;--text: #0f172a;--muted: #64748b;--line: #e2e8f0;--brand: #0f766e;--brand-strong: #115e59;--accent: #14b8a6;--focus: #0f766e;--action-bg: #0f766e;--action-hover: #115e59;--tint-text: #0f766e;--error-text: #b91c1c;--explanatory: #596a80;--shadow: 0 12px 45px rgba(15,23,42,.045)}:root[data-theme=dark]{color-scheme:dark;--bg: #091221;--surface: #101e31;--surface-2: #17283e;--surface-3: #123e42;--text: #edf6fc;--muted: #a2b3c7;--line: #26384e;--brand: #1b998c;--brand-strong: #117d75;--accent: #38d8c6;--focus: #38d8c6;--action-bg: #117d75;--action-hover: #0f766e;--tint-text: #38d8c6;--error-text: #ff9292;--explanatory: #a2b3c7;--shadow: 0 18px 55px rgba(0,0,0,.17)}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-height) + 12px)}body{margin:0;background:var(--bg);color:var(--text);font:400 15px/1.6 DM 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