/* Open6GE site styles. Design tokens are carried over verbatim from the TOSSI stack so the two sites read as one system. Dark is the default; light is opt-in via the theme toggle, which writes data-theme on . */ :root, html[data-theme="dark"] { --bg: #060b1a; --bg-fade: rgba(6, 11, 26, 0); --header-bg: rgba(6, 11, 26, 0.88); --surface: #0c1424; --surface-2: #0b1222; --hairline: #1d2740; --hairline-2: #16203a; --hairline-3: #111a2e; --ink: #f2f5f9; --ink-2: #cfd8e4; --ink-3: #aab6c6; --ink-4: #94a1b3; --ink-5: #7c8a9d; --accent: #5fc4d6; --accent-hover: #8fdbe8; --accent-ink: #04121a; --accent-pink: #e28aa8; --btn-border: #24314c; --btn-border-hover: #3a4b6d; --card-border-hover: #2f6f80; --logo-bg: #0f4c5c; --logo-border: #1b7f8f; --glow: rgba(27, 127, 143, 0.16); --glow-strong: rgba(27, 127, 143, 0.22); --hero-bg: #030713; --hero-grid: rgba(120, 170, 200, 0.055); --hero-edge: rgba(95, 196, 214, 0.28); --hero-core: rgba(46, 164, 186, 0.30); --hero-mid: rgba(24, 92, 128, 0.26); --hero-scrim: rgba(3, 7, 19, 0.72); --hero-dot: rgba(140, 190, 215, 0.16); --card-bg: #0a1018; --card-plate: #05080d; --card-plate-0: rgba(5, 8, 13, 0); --card-plate-mid: rgba(5, 8, 13, 0.78); --card-ink: #ffffff; --card-ink-2: rgba(255, 255, 255, 0.76); --card-note: rgba(255, 255, 255, 0.8); --card-border: rgba(255, 255, 255, 0.08); --card-shadow: 0 26px 52px -26px rgba(0, 0, 0, 0.62); --card-btn-bg: #ffffff; --card-btn-ink: #0b1220; --card-btn-hover: #e8eef5; --code-bg: #070d18; } html[data-theme="light"] { --bg: #ffffff; --bg-fade: rgba(233, 242, 244, 0); --header-bg: rgba(255, 255, 255, 0.9); --surface: #f7f8fa; --surface-2: #ffffff; --hairline: #e0e4ea; --hairline-2: #e0e4ea; --hairline-3: #e6e9ef; --ink: #15181e; --ink-2: #2c313a; --ink-3: #444b57; --ink-4: #525963; --ink-5: #5c646f; --accent: #0e6577; --accent-hover: #0a4c5a; --accent-ink: #ffffff; --accent-pink: #9e3a5e; --btn-border: #cdd3dc; --btn-border-hover: #98a2b0; --card-border-hover: #0e6577; --logo-bg: #e4f1f4; --logo-border: #0e6577; --glow: rgba(14, 101, 119, 0.09); --glow-strong: rgba(14, 101, 119, 0.11); --hero-bg: #e6f0f3; --hero-grid: rgba(14, 72, 92, 0.075); --hero-edge: rgba(14, 101, 119, 0.35); --hero-core: rgba(14, 101, 119, 0.30); --hero-mid: rgba(20, 108, 138, 0.19); --hero-scrim: rgba(230, 240, 243, 0.90); --hero-dot: rgba(14, 72, 92, 0.2); --card-bg: #ffffff; --card-plate: #ffffff; --card-plate-0: rgba(255, 255, 255, 0); --card-plate-mid: rgba(255, 255, 255, 0.82); --card-ink: #15181e; --card-ink-2: #444b57; --card-note: #525963; --card-border: #dfe4ea; --card-shadow: 0 20px 44px -24px rgba(15, 40, 55, 0.28); --card-btn-bg: #0e6577; --card-btn-ink: #ffffff; --card-btn-hover: #0a4c5a; --code-bg: #f4f6f9; } * { box-sizing: border-box; } html { scroll-behavior: smooth; } html, body { margin: 0; padding: 0; background: var(--bg); } body { font-family: "IBM Plex Sans", system-ui, -apple-system, sans-serif; color: var(--ink-3); -webkit-font-smoothing: antialiased; text-wrap: pretty; } a { color: var(--accent); text-decoration: none; } a:hover { color: var(--accent-hover); text-decoration: underline; } img { max-width: 100%; } [hidden] { display: none !important; } .wrap { max-width: 1180px; margin: 0 auto; padding-inline: 32px; } .wrap--wide { max-width: 1420px; } .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; } .skip-link { position: absolute; top: -60px; left: 12px; z-index: 200; padding: 10px 16px; border-radius: 8px; background: var(--accent); color: var(--accent-ink); font-weight: 600; } .skip-link:focus { top: 12px; text-decoration: none; } /* ---- Header ------------------------------------------------------------ */ .site-header { position: sticky; top: 0; z-index: 100; background: var(--header-bg); backdrop-filter: blur(12px); border-bottom: 1px solid var(--hairline-3); } .site-header__inner { max-width: 1420px; margin: 0 auto; padding: 0 32px; height: 64px; display: flex; align-items: center; gap: 22px; } .brand { display: flex; align-items: center; gap: 11px; flex-shrink: 0; } .brand:hover { text-decoration: none; } .brand__mark { display: grid; place-items: center; width: 32px; height: 32px; border-radius: 8px; background: var(--logo-bg); border: 1px solid var(--logo-border); font-family: "IBM Plex Mono", monospace; font-size: 13px; font-weight: 600; color: var(--accent); letter-spacing: -0.02em; } .brand__name { font-size: 17px; font-weight: 600; color: var(--ink); letter-spacing: -0.01em; } .brand__by { font-size: 11px; color: var(--ink-5); letter-spacing: 0.02em; padding-left: 11px; margin-left: 1px; border-left: 1px solid var(--hairline); } .brand__by a { color: var(--ink-4); } .brand__by a:hover { color: var(--accent); } .nav { display: flex; align-items: center; gap: 4px; margin-left: auto; } .nav a { padding: 8px 12px; border-radius: 7px; font-size: 14.5px; font-weight: 500; color: var(--ink-3); white-space: nowrap; } .nav a:hover { color: var(--ink); background: var(--surface); text-decoration: none; } .nav a[aria-current="page"] { color: var(--accent); font-weight: 600; } .nav__ext::after { content: "↗"; display: inline-block; margin-left: 4px; font-size: 10px; opacity: 0.6; vertical-align: 1px; } .hdr-tools { display: flex; align-items: center; gap: 8px; } .icon-btn { display: grid; place-items: center; width: 34px; height: 34px; padding: 0; border: 1px solid var(--btn-border); border-radius: 8px; background: transparent; color: var(--ink-3); cursor: pointer; transition: border-color .16s ease, color .16s ease; } .icon-btn:hover { border-color: var(--btn-border-hover); color: var(--ink); } .icon-btn svg { width: 17px; height: 17px; } html[data-theme="dark"] .icon-btn .i-sun { display: block; } html[data-theme="dark"] .icon-btn .i-moon { display: none; } html[data-theme="light"] .icon-btn .i-sun { display: none; } html[data-theme="light"] .icon-btn .i-moon { display: block; } .nav-toggle { display: none; } @media (max-width: 1080px) { .site-header__inner { padding: 0 20px; gap: 14px; } .nav a { padding: 8px 9px; font-size: 14px; } .brand__by { display: none; } } @media (max-width: 900px) { .nav-toggle { display: grid; } .nav { order: 3; flex: 1 1 100%; display: none; flex-direction: column; align-items: stretch; gap: 2px; margin: 0; padding: 8px 0 14px; border-top: 1px solid var(--hairline-3); } .nav.is-open { display: flex; } .site-header__inner { flex-wrap: wrap; height: auto; padding-block: 12px; } .hdr-tools { margin-left: auto; } .nav a { padding: 11px 12px; font-size: 15px; } } /* ---- Hero -------------------------------------------------------------- */ .hero { position: relative; overflow: hidden; display: flex; align-items: center; justify-content: center; padding: 84px 32px 72px; background-color: var(--hero-bg); background-image: radial-gradient(38% 34% at 50% 50%, var(--hero-core) 0%, var(--bg-fade) 72%), radial-gradient(78% 68% at 50% 50%, var(--hero-mid) 0%, var(--bg-fade) 76%), repeating-linear-gradient(to right, var(--hero-grid) 0 1px, transparent 1px 64px), repeating-linear-gradient(to bottom, var(--hero-grid) 0 1px, transparent 1px 64px); box-shadow: inset 0 -1px 0 var(--hero-edge); scroll-margin-top: 64px; } .hero--home { min-height: 560px; } .hero--page { min-height: 300px; padding: 66px 32px 58px; } .hero--rings { background-image: radial-gradient(38% 34% at 50% 50%, var(--hero-core) 0%, var(--bg-fade) 72%), radial-gradient(78% 68% at 50% 50%, var(--hero-mid) 0%, var(--bg-fade) 76%), repeating-radial-gradient(circle at 50% 50%, var(--bg-fade) 0 63px, var(--hero-grid) 63px 64px); } .hero__scrim { position: absolute; inset: 0; pointer-events: none; background: linear-gradient(to bottom, var(--hero-bg) 0%, var(--bg-fade) 14%, var(--bg-fade) 84%, var(--hero-bg) 100%), radial-gradient(88% 74% at 50% 50%, var(--bg-fade) 46%, var(--hero-bg) 100%); } /* The home hero keeps the dark ground in both themes: the tower canvas, the glow and the wordmark are all authored against it. Page heroes follow the theme normally. */ .hero--home { --hero-bg: #030713; --bg-fade: rgba(3, 7, 19, 0); --hero-core: rgba(46, 164, 186, 0.30); --hero-mid: rgba(24, 92, 128, 0.26); --hero-grid: rgba(120, 170, 200, 0.055); --hero-scrim: rgba(3, 7, 19, 0.72); --ink: #f2f5f9; --ink-2: #cfd8e4; --ink-3: #aab6c6; --accent: #5fc4d6; --accent-hover: #8fdbe8; --accent-ink: #04121a; --btn-border: #24314c; --btn-border-hover: #3a4b6d; } .hero__inner { position: relative; max-width: 900px; text-align: center; } .hero__inner--left { text-align: left; max-width: 780px; margin-right: auto; } /* Concentric signal rings behind the home wordmark. Pure CSS so the hero carries no third-party runtime and still renders with scripting off. */ .hero__rings { position: absolute; top: 50%; left: 50%; width: min(1100px, 130vw); aspect-ratio: 1; transform: translate(-50%, -50%); pointer-events: none; background: repeating-radial-gradient(circle at 50% 50%, rgba(95, 196, 214, 0.10) 0 1px, transparent 1px 78px); -webkit-mask-image: radial-gradient(circle at 50% 50%, #000 12%, transparent 68%); mask-image: radial-gradient(circle at 50% 50%, #000 12%, transparent 68%); animation: ring-breathe 14s ease-in-out infinite; } @keyframes ring-breathe { 0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: .85; } 50% { transform: translate(-50%, -50%) scale(1.06); opacity: 1; } } .hero__vignette { position: absolute; inset: 0; pointer-events: none; background: radial-gradient(40% 46% at 50% 46%, var(--hero-scrim) 0%, var(--hero-scrim) 60%, var(--bg-fade) 100%); } .eyebrow { display: block; font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 12px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--accent); } .hero__title-img { display: block; width: min(560px, 78vw); height: auto; margin: 0 auto; } .hero h1 { margin: 20px 0 14px; } .hero__lede { margin: 0 auto 22px; max-width: 30ch; font-size: 21px; line-height: 1.4; font-weight: 500; color: var(--ink-2); } .hero__sub { margin: 0 auto; max-width: 46ch; font-size: 20px; line-height: 1.6; color: var(--ink-3); } .hero__inner--left .hero__lede, .hero__inner--left .hero__sub { margin-inline: 0; } .hero__actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 38px; } .hero__inner--left .hero__actions { justify-content: flex-start; } .page-title { margin: 14px 0 14px; font-size: clamp(2rem, 4vw, 2.85rem); line-height: 1.1; letter-spacing: -0.022em; font-weight: 600; color: var(--ink); } /* ---- Buttons ----------------------------------------------------------- */ .btn { display: inline-flex; align-items: center; gap: 8px; padding: 13px 24px; border-radius: 8px; font-size: 15px; font-weight: 500; text-decoration: none; border: 1px solid var(--btn-border); color: var(--ink-2); transition: border-color .16s ease, background .16s ease, color .16s ease; } .btn:hover { border-color: var(--btn-border-hover); color: var(--ink); text-decoration: none; } .btn--primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 600; } .btn--primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: var(--accent-ink); } .btn svg { flex-shrink: 0; } /* ---- Sections ---------------------------------------------------------- */ .section { padding: 76px 0; } .section--tight { padding: 56px 0; } .section--surface { background: var(--surface); border-block: 1px solid var(--hairline-3); } .section__head { max-width: 760px; } .section__head--center { margin-inline: auto; text-align: center; } .section h2.h2 { margin: 14px 0 18px; font-size: clamp(1.9rem, 3.4vw, 2.625rem); line-height: 1.12; letter-spacing: -0.02em; font-weight: 600; color: var(--ink); } .section__head--center h2.h2 { margin-inline: auto; } .lede { margin: 0; font-size: 17.5px; line-height: 1.68; color: var(--ink-3); } .lede + .lede { margin-top: 14px; } .section__head--center .lede { margin-inline: auto; max-width: 68ch; } /* ---- Cards ------------------------------------------------------------- */ .grid { display: grid; gap: 20px; } .grid--2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); } .grid--3 { grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); } .grid--4 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); } /* The home ecosystem grid is a fixed 5 across, as on the reference, stepping down to 3, 2 then 1 so the photo band never gets too narrow to read. */ .grid--tiles { grid-template-columns: repeat(5, minmax(0, 1fr)); } @media (max-width: 1240px) { .grid--tiles { grid-template-columns: repeat(3, minmax(0, 1fr)); } } @media (max-width: 820px) { .grid--tiles { grid-template-columns: repeat(2, minmax(0, 1fr)); } } @media (max-width: 520px) { .grid--tiles { grid-template-columns: 1fr; } } .card { display: flex; flex-direction: column; padding: 24px; border-radius: 14px; background: var(--surface-2); border: 1px solid var(--hairline-2); transition: border-color .18s ease, transform .18s ease; } a.card:hover { border-color: var(--card-border-hover); text-decoration: none; transform: translateY(-2px); } .card__eyebrow { font-family: "IBM Plex Mono", monospace; font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); } .card h3 { margin: 10px 0 8px; font-size: 19px; line-height: 1.25; letter-spacing: -0.01em; font-weight: 600; color: var(--ink); } .card p { margin: 0; font-size: 15px; line-height: 1.6; color: var(--ink-4); } .card h3 + .card__tagline { margin: -2px 0 10px; font-size: 14px; color: var(--accent); } .card__more { margin-top: auto; padding-top: 14px; font-size: 14px; font-weight: 500; color: var(--accent); } /* Image-plate cards used on the home ecosystem grid. A photo band at the top fades into a solid plate that carries the text; the plate overlaps the image so the two read as one surface. */ .tile { position: relative; display: flex; flex-direction: column; overflow: hidden; border-radius: 22px; background: var(--card-bg); border: 1px solid var(--card-border); box-shadow: var(--card-shadow); transition: border-color .18s ease, transform .18s ease; } .tile:hover { border-color: var(--card-border-hover); text-decoration: none; transform: translateY(-3px); } .tile__media { position: relative; flex: 0 0 168px; overflow: hidden; } .tile__img { display: block; width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; } .tile:hover .tile__img { transform: scale(1.04); } /* Fade the foot of the photo into the plate colour. */ .tile__media::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 78px; pointer-events: none; background: linear-gradient(to bottom, var(--card-plate-0) 0%, var(--card-plate-mid) 46%, var(--card-plate) 72%, var(--card-plate) 100%); } .tile__body { position: relative; z-index: 2; display: flex; flex-direction: column; gap: 6px; flex: 1 1 auto; margin-top: -40px; padding: 14px 16px 14px; background: var(--card-plate); } /* The card is one , so its contents stay inline elements and are made block-level here rather than nesting

/

inside a link. */ .tile__title { display: block; font-size: 17px; line-height: 1.22; letter-spacing: -0.01em; font-weight: 600; color: var(--card-ink); } .tile__desc { display: block; font-size: 13px; line-height: 1.5; color: var(--card-ink-2); } .tile__cta { align-self: flex-start; margin-top: auto; padding: 5px 13px; border-radius: 999px; background: transparent; border: 1px solid var(--card-btn-bg); color: var(--card-btn-bg); font-size: 12.5px; font-weight: 600; transition: background .16s ease, color .16s ease; } .tile:hover .tile__cta { background: var(--card-btn-bg); color: var(--card-btn-ink); } /* The card art was authored for a dark ground, so the plate stays dark in the light theme too and the label ink stays white on both. */ html[data-theme="light"] .tile { --card-bg: #0a1018; --card-plate: #05080d; --card-plate-0: rgba(5, 8, 13, 0); --card-plate-mid: rgba(5, 8, 13, 0.78); --card-ink: #ffffff; --card-ink-2: rgba(255, 255, 255, 0.76); --card-btn-bg: #ffffff; --card-btn-ink: #0b1220; border-color: rgba(10, 30, 45, 0.14); } /* ---- Ecosystem wheel --------------------------------------------------- */ /* Two stacked images: the rings rotate, the labels stay upright so they remain readable. The artwork is light ink, so the band it sits on keeps a dark ground in both themes. */ .eco { background: var(--hero-bg); border-block: 1px solid var(--hairline-3); --ink: #f2f5f9; --ink-2: #cfd8e4; --ink-3: #aab6c6; --ink-5: #7c8a9d; --accent: #5fc4d6; } html[data-theme="light"] .eco { --hero-bg: #050a16; background: #050a16; } .wheel { position: relative; width: min(720px, 92vw); aspect-ratio: 1; margin: 8px auto 0; } .wheel img { position: absolute; inset: 0; width: 100%; height: 100%; display: block; } .wheel__rings { animation: wheel-spin 90s linear infinite; transform-origin: 50% 50%; will-change: transform; } .wheel__labels { pointer-events: none; } .wheel__hub { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); font-weight: 700; color: #fff; letter-spacing: -0.01em; font-size: clamp(1.1rem, 3.1vw, 2rem); white-space: nowrap; pointer-events: none; } @keyframes wheel-spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } } @media (max-width: 40rem) { .wheel { width: min(86vw, 420px); } .wheel__labels { transform: scale(.707); } .wheel__hub { font-size: clamp(.8rem, 4.2vw, 1.15rem); } } @media (prefers-reduced-motion: reduce) { .wheel__rings { animation: none; } } /* ---- Chips / pills ----------------------------------------------------- */ .chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; } .chip { padding: 7px 13px; border-radius: 999px; background: var(--surface); border: 1px solid var(--hairline-2); font-size: 13.5px; color: var(--ink-3); } .chip--mono { font-family: "IBM Plex Mono", monospace; font-size: 12.5px; color: var(--ink-4); letter-spacing: 0.01em; } .kicker { margin: 0 0 10px; font-family: "IBM Plex Mono", monospace; font-size: 11.5px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-5); } /* ---- Callout ----------------------------------------------------------- */ /* A pointer out of the page, to a related community or project. Accented down the leading edge so it reads as an aside, not as body copy. */ .callout { margin: 34px 0 0; padding: 22px 24px; border: 1px solid var(--hairline-2); border-left: 3px solid var(--accent); border-radius: 12px; background: var(--surface-2); } .callout__eyebrow { display: block; margin-bottom: 8px; font-family: "IBM Plex Mono", monospace; font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); } .callout h3 { margin: 0 0 8px; font-size: 20px; line-height: 1.25; letter-spacing: -0.01em; font-weight: 600; color: var(--ink); } .callout p { margin: 0 0 16px; font-size: 15.5px; line-height: 1.62; color: var(--ink-3); } .callout .btn { padding: 10px 18px; font-size: 14.5px; } /* ---- Figures ----------------------------------------------------------- */ .figure { margin: 0; } .figure img { display: block; width: 100%; height: auto; border-radius: 14px; border: 1px solid var(--hairline-2); /* The diagrams are authored on white, so they keep a white plate in both themes rather than glowing against the dark page. */ background: #ffffff; padding: 14px; } .figure figcaption { margin-top: 12px; font-size: 14px; line-height: 1.55; color: var(--ink-5); text-align: center; } /* ---- Prose ------------------------------------------------------------- */ /* Pillar body: prose on the left, capability and standards lists on the right, collapsing to one column when there is no room for the aside. */ .split { display: grid; gap: 44px; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); align-items: start; } @media (max-width: 900px) { .split { grid-template-columns: 1fr; gap: 34px; } } .split__aside { position: sticky; top: 88px; } @media (max-width: 900px) { .split__aside { position: static; } } .prose { max-width: 74ch; } .prose p { margin: 0 0 16px; font-size: 16.5px; line-height: 1.72; color: var(--ink-3); } .prose h2 { margin: 40px 0 14px; font-size: 26px; line-height: 1.2; letter-spacing: -0.015em; font-weight: 600; color: var(--ink); } .prose h3 { margin: 30px 0 10px; font-size: 19.5px; line-height: 1.25; font-weight: 600; color: var(--ink); } .prose ul, .prose ol { margin: 0 0 16px; padding-left: 22px; } .prose li { margin-bottom: 8px; font-size: 16.5px; line-height: 1.68; color: var(--ink-3); } .prose strong { color: var(--ink-2); font-weight: 600; } .prose > :first-child { margin-top: 0; } /* ---- Footer ------------------------------------------------------------ */ .site-footer { background: var(--surface); border-top: 1px solid var(--hairline-3); padding: 56px 0 0; } .site-footer__inner { max-width: 1180px; margin: 0 auto; padding: 0 32px; display: grid; gap: 32px; grid-template-columns: minmax(260px, 1.5fr) repeat(auto-fit, minmax(150px, 1fr)); } .site-footer__brand p { margin: 10px 0 0; max-width: 40ch; font-size: 14.5px; line-height: 1.62; color: var(--ink-4); } .site-footer h2 { margin: 0 0 12px; font-size: 12px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-5); } .site-footer ul { margin: 0; padding: 0; list-style: none; } .site-footer li { margin-bottom: 9px; } .site-footer li a { font-size: 14.5px; color: var(--ink-3); } .site-footer li a:hover { color: var(--accent); } .site-footer__bar { max-width: 1180px; margin: 44px auto 0; padding: 20px 32px 26px; border-top: 1px solid var(--hairline-3); display: flex; flex-wrap: wrap; align-items: center; gap: 12px; font-size: 13.5px; color: var(--ink-5); } .site-footer__bar .spacer { margin-left: auto; } /* ---- Motion ------------------------------------------------------------ */ @media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; } }