@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&family=Space+Grotesk:wght@400;500;600;700&family=Libre+Baskerville:ital,wght@0,400;0,700;1,400&display=swap');
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:root[data-mode=light]{--bg:#faf9ff;--surface:#fff;--raised:#f0eef8;--text:#20202d;--muted:#686879;--line:#dfdce9;--accent:#6740d9;--solid:#6c43ed;--tint:#ece6fc;--shadow:0 24px 80px #2420350c;color-scheme:light}
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@media(min-width:1500px){.hero{padding-top:85px;min-height:640px}}
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/* 02 / Signal: a spare, phosphor-green command interface. */
:root[data-concept=signal]{--bg:#090f0c;--surface:#101a14;--raised:#17271d;--text:#e4f6e9;--muted:#94ad9b;--line:#2a4132;--accent:#a7ed98;--solid:#b0ed83;--on-solid:#101b0d;--tint:#1a2a1a;--round:3px;--hero-font:'IBM Plex Mono',monospace;--art-filter:hue-rotate(179deg) saturate(.65)}
:root[data-concept=signal][data-mode=light]{--bg:#f3f7f2;--surface:#fff;--raised:#e8efe7;--text:#18291c;--muted:#526858;--line:#c9d7ca;--accent:#247140;--solid:#286d3d;--on-solid:#fff;--tint:#e3eedc}
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/* 03 / Atlas: a compact blue research workspace. */
:root[data-concept=atlas]{--bg:#0b1320;--surface:#111d2e;--raised:#19283d;--text:#eaf3ff;--muted:#98aac1;--line:#2b3b52;--accent:#82b7ff;--solid:#4b8dea;--on-solid:#071426;--tint:#182e4d;--round:9px;--art-filter:hue-rotate(-34deg)}
:root[data-concept=atlas][data-mode=light]{--bg:#f4f7fc;--surface:#fff;--raised:#eaf0f8;--text:#192d48;--muted:#59708d;--line:#d2deed;--accent:#2862bb;--solid:#2e69ca;--on-solid:#fff;--tint:#e4eefe}
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/* 04 / Commons: a confident orange editorial identity. */
:root[data-concept=commons]{--bg:#191612;--surface:#211d18;--raised:#30281f;--text:#fbf2e7;--muted:#b5a797;--line:#4a3c2e;--accent:#ffac70;--solid:#f88c48;--on-solid:#22170e;--tint:#352418;--round:2px;--hero-font:'Libre Baskerville',Georgia,serif;--art-filter:hue-rotate(103deg) saturate(.7)}
:root[data-concept=commons][data-mode=light]{--bg:#fffdf8;--surface:#fff;--raised:#f6f0e5;--text:#27211b;--muted:#716454;--line:#ded3c3;--accent:#b74c1f;--solid:#bb4b1b;--on-solid:#fff;--tint:#ffedda}
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