/* ============================================================================ Bulletin — marketing site Signal design system. Tokens mirrored from the design lead's signal-style-guide.html (11 Aug 2026); this file is the marketing-site copy, deliberately duplicated rather than imported across repos. Three layers, same as the product: 1 primitives — OKLCH ramps on Radix step semantics 2a brand semantic — theme-able 2b safety semantic — LOCKED; descends from its own primitives so no theme can reach it. This site only uses the audience ramp. ========================================================================== */ @font-face { font-family: "Inter"; font-style: normal; font-weight: 100 900; font-display: swap; src: url("/fonts/inter-latin.woff2") format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; } @font-face { font-family: "Inter"; font-style: normal; font-weight: 100 900; font-display: swap; src: url("/fonts/inter-latin-ext.woff2") format("woff2"); unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; } :root { /* ── LAYER 1 · PRIMITIVES ───────────────────────────────────────────── */ --neutral-1: oklch(99.2% 0.002 255); --neutral-2: oklch(98.0% 0.004 255); --neutral-3: oklch(95.7% 0.006 255); --neutral-4: oklch(93.6% 0.008 255); --neutral-5: oklch(91.2% 0.010 255); --neutral-6: oklch(88.4% 0.012 255); --neutral-7: oklch(84.0% 0.014 255); --neutral-8: oklch(76.5% 0.018 255); --neutral-9: oklch(64.5% 0.022 255); --neutral-11: oklch(47.5% 0.021 255); --neutral-12: oklch(21.0% 0.016 255); --accent-1: oklch(99.3% 0.004 265); --accent-2: oklch(98.2% 0.010 265); --accent-3: oklch(96.0% 0.022 265); --accent-6: oklch(86.5% 0.074 265); --accent-9: oklch(48.0% 0.205 265); --accent-10: oklch(43.0% 0.195 265); --accent-12: oklch(28.0% 0.110 265); /* LOCKED primitives — these names appear in no theme block. */ --safe-grey-7: oklch(83.5% 0.004 255); --safe-grey-11: oklch(47.0% 0.006 255); /* ── LAYER 2A · BRAND SEMANTIC ─────────────────────────────────────── */ --ground: var(--neutral-2); --surface: var(--neutral-1); --surface-sunken: var(--neutral-3); --line-soft: var(--neutral-5); --line: var(--neutral-6); --line-strong: var(--neutral-8); --ink: var(--neutral-12); --ink-2: var(--neutral-11); --ink-3: var(--neutral-9); --accent: var(--accent-9); --accent-hover: var(--accent-10); --accent-active: var(--accent-12); --accent-tint: var(--accent-3); --accent-line: var(--accent-6); --accent-ink: #fff; --focus-ring: var(--accent-9); /* ── LAYER 2B · SAFETY SEMANTIC ── LOCKED ──────────────────────────── */ --safety-office-fg: var(--safe-grey-11); --safety-office-line: var(--safe-grey-7); /* ── shape, depth, motion ──────────────────────────────────────────── */ --r-sm: 5px; --r-md: 7px; --r-lg: 11px; --r-pill: 999px; --e1: 0 1px 2px rgba(12, 17, 22, .08); --e2: 0 2px 10px -3px rgba(12, 17, 22, .12); --e3: 0 12px 32px -12px rgba(12, 17, 22, .28); --dur-state: 120ms; --ease: cubic-bezier(.2, .6, .3, 1); /* ── type ──────────────────────────────────────────────────────────── */ --font-sans: "Inter", ui-sans-serif, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace; --measure-answer: 68ch; /* ── space ── 4px base, eight steps, nothing between ───────────────── */ --s-1: 4px; --s-2: 8px; --s-3: 12px; --s-4: 16px; --s-5: 24px; --s-6: 32px; --s-7: 48px; --s-8: 64px; --wrap: 1080px; color-scheme: light; } /* OKLCH fallback. Layer 1 only — the semantic layers above are unchanged, so a browser without oklch() gets the same system in sRGB rather than a different design. Values are the sRGB conversions of the primitives above. */ @supports not (color: oklch(50% 0 0)) { :root { --neutral-1: #fbfcfe; --neutral-2: #f7f9fb; --neutral-3: #eef1f5; --neutral-4: #e6eaef; --neutral-5: #dee2e9; --neutral-6: #d4d9e1; --neutral-7: #c5cbd4; --neutral-8: #abb3be; --neutral-9: #858f9b; --neutral-11: #545d68; --neutral-12: #131920; --accent-1: #fbfdff; --accent-2: #f6f9ff; --accent-3: #ebf2ff; --accent-6: #bbd3ff; --accent-9: #224dcf; --accent-10: #193fb8; --accent-12: #0d225e; --safe-grey-7: #c7c9cb; --safe-grey-11: #595b5e; } } /* ── reset ──────────────────────────────────────────────────────────────── */ *, *::before, *::after { box-sizing: border-box; } html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; } @media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } } body { margin: 0; background: var(--ground); color: var(--ink); font-family: var(--font-sans); font-size: 16px; line-height: 1.55; -webkit-font-smoothing: antialiased; font-feature-settings: "cv05", "ss03"; } h1, h2, h3, p, ul, blockquote, figure { margin: 0; } ul { padding: 0; list-style: none; } a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; } a:hover { color: var(--accent-hover); } :focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 2px; border-radius: 2px; } .skip { position: absolute; left: -9999px; top: var(--s-2); background: var(--surface); color: var(--ink); padding: var(--s-2) var(--s-4); border: 1px solid var(--line-strong); border-radius: var(--r-md); z-index: 10; } .skip:focus { left: var(--s-4); } .wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 var(--s-5); } .nowrap { white-space: nowrap; } /* The header is sticky, so anchored sections have to clear it. */ [id] { scroll-margin-top: 76px; } /* ── type ramp ──────────────────────────────────────────────────────────── */ h1 { font-size: clamp(34px, 5.2vw, 52px); line-height: 1.08; letter-spacing: -.028em; font-weight: 650; max-width: 19ch; } h2 { font-size: clamp(25px, 3.1vw, 33px); line-height: 1.18; letter-spacing: -.02em; font-weight: 650; max-width: 26ch; } h3 { font-size: 18.5px; line-height: 1.4; letter-spacing: -.008em; font-weight: 650; } .eyebrow { font-size: 12.5px; line-height: 1.4; letter-spacing: .13em; text-transform: uppercase; font-weight: 700; color: var(--ink-3); margin-bottom: var(--s-3); } .lead { font-size: clamp(18.5px, 2.1vw, 21px); line-height: 1.5; letter-spacing: -.008em; color: var(--ink); max-width: 40ch; margin-top: var(--s-4); } .sub { font-size: 16px; line-height: 1.6; color: var(--ink-2); max-width: 46ch; margin-top: var(--s-4); } .section-lead { font-size: 18px; line-height: 1.6; color: var(--ink-2); max-width: 58ch; margin-top: var(--s-4); } /* ── header ─────────────────────────────────────────────────────────────── */ .site-head { position: sticky; top: 0; z-index: 5; background: var(--ground); background: color-mix(in oklab, var(--ground) 88%, transparent); backdrop-filter: saturate(140%) blur(8px); border-bottom: 1px solid var(--line-soft); } .head-inner { display: flex; align-items: center; justify-content: space-between; gap: var(--s-4); min-height: 60px; } .wordmark { font-size: 20px; font-weight: 650; letter-spacing: -.03em; color: var(--ink); text-decoration: none; line-height: 1; } .wordmark-sm { font-size: 17px; } .head-nav { display: flex; align-items: center; gap: var(--s-5); } .head-nav > a:not(.btn) { font-size: 14.5px; font-weight: 550; color: var(--ink-2); text-decoration: none; } .head-nav > a:not(.btn):hover { color: var(--ink); } /* ── button ─────────────────────────────────────────────────────────────── */ .btn { display: inline-flex; align-items: center; gap: var(--s-2); font-family: inherit; font-size: 15px; font-weight: 600; line-height: 1.35; padding: 9px 16px; border-radius: var(--r-md); border: 1px solid var(--line-strong); color: var(--ink-2); background: var(--surface); box-shadow: var(--e1); text-decoration: none; white-space: nowrap; transition: background var(--dur-state) var(--ease), color var(--dur-state) var(--ease); } .btn-primary { background: var(--accent); color: var(--accent-ink); border-color: transparent; } .btn-primary:hover { background: var(--accent-hover); color: var(--accent-ink); } .btn-sm { font-size: 14px; padding: 6px 12px; } .btn-lg { font-size: 16.5px; padding: 12px 22px; } /* ── hero ───────────────────────────────────────────────────────────────── */ .hero { padding: clamp(var(--s-7), 7vw, 96px) 0 clamp(var(--s-7), 6vw, 80px); } .hero-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: clamp(var(--s-6), 5vw, var(--s-8)); align-items: center; } .cta-row { display: flex; align-items: center; flex-wrap: wrap; gap: var(--s-4); margin-top: var(--s-6); } .cta-note { font-size: 14.5px; color: var(--ink-3); max-width: 30ch; } /* ── specimen card — the product's own atom, drawn honestly ─────────────── */ .specimen figcaption { margin-top: var(--s-3); font-size: 13.5px; line-height: 1.5; color: var(--ink-3); max-width: 46ch; } .card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); box-shadow: var(--e2); padding: var(--s-5); } .card-q { font-size: 14.5px; font-weight: 600; color: var(--ink-2); padding-bottom: var(--s-3); margin-bottom: var(--s-4); border-bottom: 1px solid var(--line-soft); } .card-a { font-size: 18.5px; line-height: 1.62; letter-spacing: -.005em; max-width: var(--measure-answer); } .card-a strong { font-weight: 650; } .card-a-none { color: var(--ink); font-weight: 650; } .card-note { margin-top: var(--s-2); font-size: 14.5px; color: var(--ink-2); } .card-src { display: flex; gap: var(--s-2); align-items: flex-start; margin-top: var(--s-4); font-size: 14px; color: var(--ink-2); } .src-n { font-family: var(--font-mono); font-size: 12px; color: var(--ink-3); border: 1px solid var(--line); border-radius: 4px; padding: 0 5px; line-height: 1.6; flex: none; margin-top: 2px; } .src-date { display: block; font-size: 12.5px; color: var(--ink-3); } .card-foot { margin-top: var(--s-4); padding-top: var(--s-3); border-top: 1px solid var(--line-soft); } .card-quiet { box-shadow: var(--e1); } /* audience chip — LOCKED safety layer; never gets its own row */ .aud { display: inline-flex; align-items: center; gap: 5px; font-size: 12.5px; font-weight: 660; letter-spacing: .03em; line-height: 1.6; border-radius: var(--r-pill); padding: 2px 10px; white-space: nowrap; } .aud-office { color: var(--safety-office-fg); border: 1px solid var(--safety-office-line); background: transparent; } /* ── bands ──────────────────────────────────────────────────────────────── */ .band { padding: clamp(var(--s-7), 6vw, 88px) 0; border-top: 1px solid var(--line-soft); } .band-tint { background: var(--accent-tint); border-top-color: var(--accent-line); } .band-cta { background: var(--surface); } /* No inline styles anywhere: the CSP in deploy/nginx.conf is `style-src 'self'`, which blocks style attributes as well as