/* vmactions.org -- the only stylesheet. * * Rules that must survive edits: * - No external resources. No web fonts, no CDN, no remote images. * - Both themes are first class. Dark follows prefers-color-scheme by * default; [data-theme] on overrides it in BOTH directions. * - Colour carries exactly one meaning at a time: --pass means "this run * succeeded", --debug means "this is the debug path", and --os-* means * "this is that system". Buttons, links and focus rings stay neutral. * - Responsive to 375px. Wide content scrolls inside .scroll-x; the body * never scrolls sideways. */ /* ------------------------------------------------------------ tokens */ :root { color-scheme: light dark; --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif; --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", "Courier New", monospace; --page: 1180px; --radius: 10px; --gap: 20px; /* Light theme -- warm paper, so it does not read as a washed-out dark. */ --ground: #fbfaf7; --surface: #ffffff; --surface-2: #f3f1eb; --ink: #191f24; --ink-dim: #55636f; --rule: #ddd9d0; --pass: #0d6b39; --debug: #8a5200; --shadow: 0 1px 2px rgba(25, 31, 36, .06), 0 8px 24px rgba(25, 31, 36, .06); } @media (prefers-color-scheme: dark) { :root { --ground: #0f1418; --surface: #161d23; --surface-2: #1d262d; --ink: #e7eef4; --ink-dim: #9aabb9; --rule: #2a353e; --pass: #4fd489; --debug: #ffb454; --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px rgba(0, 0, 0, .3); } } /* The toggle must beat the media query in both directions, so both themes * are restated here. Do not "simplify" either block away. */ :root[data-theme="light"] { --ground: #fbfaf7; --surface: #ffffff; --surface-2: #f3f1eb; --ink: #191f24; --ink-dim: #55636f; --rule: #ddd9d0; --pass: #0d6b39; --debug: #8a5200; --shadow: 0 1px 2px rgba(25, 31, 36, .06), 0 8px 24px rgba(25, 31, 36, .06); } :root[data-theme="dark"] { --ground: #0f1418; --surface: #161d23; --surface-2: #1d262d; --ink: #e7eef4; --ink-dim: #9aabb9; --rule: #2a353e; --pass: #4fd489; --debug: #ffb454; --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px rgba(0, 0, 0, .3); } /* System colours. Each was sampled from that project's own site or logo, and * the source is recorded beside the value. Never write one of these from * memory: a new system means going to that project's site, sampling, and * recording where it came from. The two marked DERIVED have no published * palette and must never be presented anywhere as official. * * There are TWO sets, because one set cannot serve both grounds. A colour * picked for a white page disappears on ink, and the reverse. Each set clears * 3:1 against its own surface -- verified by tools/check-contrast.js, which is * how these values were chosen. Only lightness moves between the sets; hue and * saturation are the project's own. * * Light: the project's published value, darkened only where the published * value itself falls under 3:1 on white. * Dark: the value lifted for the ink ground, carried over from * anyvm-org.github.io/assets/style.css. */ :root { --os-freebsd: #ab2b28; /* freebsd.org main.min.css, as published */ --os-openbsd: #e05434; /* openbsd.org --red, as-is */ --os-netbsd: #d43900; /* netbsd.org global.css, as published */ --os-dragonflybsd: #7a9c00; /* logo disc small_logo.png #cfff22, darkened */ --os-midnightbsd: #7d88de; /* DERIVED -- no published palette */ --os-ghostbsd: #009cb5; /* site logo ghostbsd.png, as published */ --os-solaris: #c74634; /* oracle.com, as published */ --os-omnios: #d67800; /* omnios.org app.css #ff8f00, darkened */ --os-openindiana: #6a9e1e; /* oibird.svg #95d834, darkened */ --os-tribblix: #006600; /* tribblix.css, as published */ --os-haiku: #cf7e00; /* haiku-os.org accent #ff9c00, darkened */ --os-hurd: #9b84cb; /* DERIVED -- logo is monochrome */ --os-openeuler: #204bb9; /* official logo png, as published */ --os-blissos: #0080ff; /* blissos.org neon.css, as-is */ } @media (prefers-color-scheme: dark) { :root { --os-freebsd: #e2504a; /* #ab2b28 lifted */ --os-openbsd: #e05434; /* as-is */ --os-netbsd: #f2551b; /* #d43900 lifted */ --os-dragonflybsd: #cfff22; /* as-is */ --os-midnightbsd: #7d88de; /* DERIVED */ --os-ghostbsd: #22bcd4; /* #009cb5 lifted */ --os-solaris: #e05a48; /* #c74634 lifted */ --os-omnios: #ff8f00; /* as-is */ --os-openindiana: #95d834; /* as-is */ --os-tribblix: #3fae3f; /* #006600 lifted hard */ --os-haiku: #ff9c00; /* as-is */ --os-hurd: #a48fd0; /* DERIVED */ --os-openeuler: #5b8cf0; /* #204bb9 lifted */ --os-blissos: #0080ff; /* as-is */ } } :root[data-theme="light"] { --os-freebsd: #ab2b28; --os-openbsd: #e05434; --os-netbsd: #d43900; --os-dragonflybsd: #7a9c00; --os-midnightbsd: #7d88de; --os-ghostbsd: #009cb5; --os-solaris: #c74634; --os-omnios: #d67800; --os-openindiana: #6a9e1e; --os-tribblix: #006600; --os-haiku: #cf7e00; --os-hurd: #9b84cb; --os-openeuler: #204bb9; --os-blissos: #0080ff; } :root[data-theme="dark"] { --os-freebsd: #e2504a; --os-openbsd: #e05434; --os-netbsd: #f2551b; --os-dragonflybsd: #cfff22; --os-midnightbsd: #7d88de; --os-ghostbsd: #22bcd4; --os-solaris: #e05a48; --os-omnios: #ff8f00; --os-openindiana: #95d834; --os-tribblix: #3fae3f; --os-haiku: #ff9c00; --os-hurd: #a48fd0; --os-openeuler: #5b8cf0; --os-blissos: #0080ff; } [data-os="freebsd"] { --os-color: var(--os-freebsd); } [data-os="openbsd"] { --os-color: var(--os-openbsd); } [data-os="netbsd"] { --os-color: var(--os-netbsd); } [data-os="dragonflybsd"] { --os-color: var(--os-dragonflybsd); } [data-os="midnightbsd"] { --os-color: var(--os-midnightbsd); } [data-os="ghostbsd"] { --os-color: var(--os-ghostbsd); } [data-os="solaris"] { --os-color: var(--os-solaris); } [data-os="omnios"] { --os-color: var(--os-omnios); } [data-os="openindiana"] { --os-color: var(--os-openindiana); } [data-os="tribblix"] { --os-color: var(--os-tribblix); } [data-os="haiku"] { --os-color: var(--os-haiku); } [data-os="hurd"] { --os-color: var(--os-hurd); } [data-os="openeuler"] { --os-color: var(--os-openeuler); } [data-os="blissos"] { --os-color: var(--os-blissos); } /* ------------------------------------------------------------ language * * Both languages live in the markup; CSS shows one. The selectors are scoped * to `body` on purpose: carries lang= too, and an unscoped * [lang="en"] rule would hide the entire document. * * They are written [lang="zh"][lang] rather than [lang="zh"] because a single * attribute selector ties with a class, and component rules further down this * file set `display`. The doubled selector outranks them. Do not simplify. */ body [lang="zh"][lang] { display: none; } html[data-lang="zh"] body [lang="zh"][lang] { display: revert; } html[data-lang="zh"] body [lang="en"][lang] { display: none; } /* ------------------------------------------------------------ base */ * { box-sizing: border-box; } html { -webkit-text-size-adjust: 100%; } body { margin: 0; background: var(--ground); color: var(--ink); font-family: var(--sans); font-size: 16px; line-height: 1.65; overflow-x: hidden; } h1, h2, h3 { line-height: 1.25; margin: 0 0 .5em; font-weight: 650; } h1 { font-size: clamp(1.9rem, 1.2rem + 2.6vw, 3.1rem); letter-spacing: -.02em; } h2 { font-size: clamp(1.45rem, 1.1rem + 1.3vw, 2.05rem); letter-spacing: -.015em; } h3 { font-size: 1.05rem; } p { margin: 0 0 1em; } a { color: var(--ink); text-decoration-color: var(--rule); text-underline-offset: 3px; } a:hover { text-decoration-color: currentColor; } code, kbd, pre { font-family: var(--mono); } code { font-size: .875em; background: var(--surface-2); border: 1px solid var(--rule); border-radius: 5px; padding: .08em .38em; white-space: nowrap; } /* Inside a 
 the code is a block, not a token: it keeps its own newlines,
 * loses the inline chrome, and must NOT inherit the nowrap above -- that
 * collapses a whole listing onto one 2000px line and pushes the page sideways. */
pre code {
  white-space: pre;
  background: none;
  border: 0;
  border-radius: 0;
  padding: 0;
  font-size: inherit;
}

:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
  border-radius: 3px;
}

.wrap { max-width: var(--page); margin: 0 auto; padding: 0 24px; }

.section { padding: clamp(48px, 7vw, 88px) 0; border-top: 1px solid var(--rule); }
.section-alt { background: var(--surface); }

.eyebrow {
  font-family: var(--mono);
  font-size: .74rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin: 0 0 .6em;
}

.lede { font-size: 1.08rem; color: var(--ink-dim); max-width: 62ch; }

.note { font-size: .86rem; color: var(--ink-dim); margin-top: .9em; }

.dim { color: var(--ink-dim); }

/* Wide content scrolls in here, never on the body. */
.scroll-x {
  overflow-x: auto;
  overscroll-behavior-x: contain;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--surface);
}

/* ------------------------------------------------------------ nav */

.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--ground) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--rule);
}

.nav-in {
  max-width: var(--page);
  margin: 0 auto;
  padding: 10px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 650;
  letter-spacing: -.01em;
  text-decoration: none;
}

.brand svg { width: 26px; height: 26px; display: block; }

.nav-links { display: flex; gap: 18px; margin-left: auto; }

.nav-links a {
  font-size: .9rem;
  color: var(--ink-dim);
  text-decoration: none;
}

.nav-links a:hover { color: var(--ink); }

.switches { display: flex; gap: 8px; }

.switch {
  font: inherit;
  font-family: var(--mono);
  font-size: .78rem;
  color: var(--ink-dim);
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 999px;
  padding: 4px 11px;
  cursor: pointer;
  line-height: 1.5;
}

.switch:hover { color: var(--ink); border-color: var(--ink-dim); }

@media (max-width: 720px) {
  .nav-links { display: none; }
}

/* ------------------------------------------------------------ hero */

.hero { padding: clamp(40px, 6vw, 76px) 0 clamp(36px, 5vw, 64px); }

.hero h1 { max-width: 18ch; }

.hero .lede { margin-bottom: 28px; }

.hero-cols {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  gap: clamp(20px, 3vw, 40px);
  align-items: start;
  margin-top: 34px;
}

@media (max-width: 900px) {
  .hero-cols { grid-template-columns: minmax(0, 1fr); }
}

/* Code block with a copy button. */

.codeblock {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.codeblock-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--rule);
  background: var(--surface-2);
  font-family: var(--mono);
  font-size: .76rem;
  color: var(--ink-dim);
}

.codeblock pre {
  margin: 0;
  padding: 16px;
  overflow-x: auto;
  font-size: .82rem;
  line-height: 1.6;
  tab-size: 2;
}

.copy {
  margin-left: auto;
  font: inherit;
  font-family: var(--mono);
  font-size: .74rem;
  color: var(--ink-dim);
  background: var(--ground);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 2px 9px;
  cursor: pointer;
}

.copy:hover { color: var(--ink); border-color: var(--ink-dim); }

/* The simulated run. Decorative: aria-hidden in the markup. */

.run {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.run-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--rule);
  background: var(--surface-2);
  font-family: var(--mono);
  font-size: .76rem;
  color: var(--ink-dim);
}

.run-list { list-style: none; margin: 0; padding: 6px 0; }

.run-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 14px;
  font-family: var(--mono);
  font-size: .82rem;
  border-left: 2px solid transparent;
}

.run-list li[data-os] { border-left-color: var(--os-color); }

.run-list .tick {
  width: 15px;
  height: 15px;
  flex: none;
  border-radius: 50%;
  border: 1.5px solid var(--pass);
  color: var(--pass);
  display: grid;
  place-items: center;
  font-size: 9px;
  line-height: 1;
}

.run-list .dur { margin-left: auto; color: var(--ink-dim); font-size: .76rem; }

.run-list li.pending .tick { border-color: var(--ink-dim); color: transparent; }
.run-list li.pending { color: var(--ink-dim); }

/* Counters. */

.stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(20px, 4vw, 52px);
  margin-top: 34px;
  padding-top: 26px;
  border-top: 1px solid var(--rule);
}

.stat-n {
  display: block;
  font-family: var(--mono);
  font-size: clamp(1.8rem, 1.2rem + 2vw, 2.6rem);
  font-weight: 600;
  letter-spacing: -.03em;
  line-height: 1.1;
}

.stat-l {
  font-family: var(--mono);
  font-size: .78rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

html[data-lang="zh"] .stat-l { text-transform: none; letter-spacing: .02em; }

/* ------------------------------------------------------------ diagram */

.diagram { margin: 8px 0 0; }
.diagram svg { width: 100%; height: auto; display: block; }

.how-cols {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(20px, 3vw, 44px);
  align-items: center;
}

@media (max-width: 860px) {
  .how-cols { grid-template-columns: minmax(0, 1fr); }
}

.how-points { list-style: none; margin: 0; padding: 0; }

.how-points li {
  padding: 12px 0;
  border-top: 1px solid var(--rule);
}

.how-points li:first-child { border-top: 0; }

.how-points strong { display: block; }

/* ------------------------------------------------------------ matrix */

.matrix { border-collapse: collapse; width: 100%; font-size: .84rem; }

.matrix th, .matrix td {
  padding: 9px 12px;
  text-align: left;
  border-bottom: 1px solid var(--rule);
  white-space: nowrap;
}

.matrix thead th {
  position: sticky;
  top: 0;
  background: var(--surface-2);
  font-family: var(--mono);
  font-size: .76rem;
  font-weight: 600;
  color: var(--ink-dim);
  z-index: 1;
}

.matrix tbody th {
  font-weight: 600;
  border-left: 3px solid var(--os-color, var(--rule));
}

.matrix tbody tr:last-child th,
.matrix tbody tr:last-child td { border-bottom: 0; }

.matrix .dot {
  display: none;
}

.matrix td.yes code {
  background: transparent;
  border: 0;
  padding: 0;
  margin-right: .5em;
  font-size: .78rem;
  color: var(--ink-dim);
}

.matrix td.no { color: var(--rule); text-align: center; }

.matrix .warn { color: var(--debug); font-family: var(--mono); }

/* ------------------------------------------------------------ cards */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(276px, 1fr));
  gap: var(--gap);
}

.card {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--os-color, var(--rule));
  border-radius: var(--radius);
  padding: 16px 18px;
}

.card h3 { display: flex; align-items: center; gap: 8px; margin-bottom: .35em; }

.card .dot {
  width: 9px;
  height: 9px;
  flex: none;
  border-radius: 50%;
  background: var(--os-color, var(--ink-dim));
}

.card .uses { margin: 0 0 12px; }
.card .uses code { font-size: .78rem; white-space: normal; }

.card dl { margin: 0; font-size: .84rem; }

.card .row {
  display: grid;
  grid-template-columns: 8.5em minmax(0, 1fr);
  gap: 8px;
  padding: 5px 0;
  border-top: 1px solid var(--rule);
}

.card dt { color: var(--ink-dim); font-family: var(--mono); font-size: .76rem; }
.card dd { margin: 0; }

.card dd code { font-size: .76rem; white-space: normal; }

.card .sync {
  display: block;
  font-family: var(--mono);
  font-size: .74rem;
  color: var(--ink-dim);
}

.card .sync code { margin-right: .5em; color: var(--ink); }

.card .links { display: flex; gap: 14px; margin: 14px 0 0; font-size: .82rem; }

html[data-lang="zh"] .card .row { grid-template-columns: 7em minmax(0, 1fr); }

/* ------------------------------------------------------------ features */

.features {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--gap);
}

.feature {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 16px 18px;
}

.feature h3 { font-family: var(--mono); font-size: .88rem; }
.feature p { margin: 0; font-size: .88rem; color: var(--ink-dim); }
.feature.is-debug { border-color: color-mix(in srgb, var(--debug) 45%, var(--rule)); }
.feature.is-debug h3 { color: var(--debug); }

/* ------------------------------------------------------------ skill */

.skill {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(20px, 3vw, 40px);
  align-items: center;
}

@media (max-width: 860px) {
  .skill { grid-template-columns: minmax(0, 1fr); }
}

/* ------------------------------------------------------------ footer */

.footer {
  border-top: 1px solid var(--rule);
  padding: 40px 0;
  font-size: .88rem;
  color: var(--ink-dim);
}

.footer-in {
  max-width: var(--page);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  align-items: center;
}

.footer a { color: var(--ink-dim); }
.footer a:hover { color: var(--ink); }
.footer .spacer { margin-left: auto; }

/* ------------------------------------------------------------ docs */

.docs {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: clamp(24px, 4vw, 56px);
  align-items: start;
  padding: 40px 0 80px;
}

/* A grid item defaults to min-width:auto, so it refuses to shrink below its
 * widest child and overflows the track no matter what the track says. */
.docs > * { min-width: 0; }

@media (max-width: 900px) {
  .docs { grid-template-columns: minmax(0, 1fr); }
  .toc { position: static !important; }
}

.toc { position: sticky; top: 72px; font-size: .86rem; }
.toc ol { list-style: none; margin: 0; padding: 0; }
.toc li { margin: 0 0 2px; }

.toc a {
  display: block;
  padding: 3px 10px;
  color: var(--ink-dim);
  text-decoration: none;
  border-left: 2px solid var(--rule);
}

.toc a:hover { color: var(--ink); }
.toc a.on { color: var(--ink); border-left-color: var(--ink); }

.opt { padding: 20px 0; border-top: 1px solid var(--rule); scroll-margin-top: 76px; }
.opt:first-of-type { border-top: 0; }
.opt h3 { font-family: var(--mono); font-size: 1rem; }

.opt-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  font-family: var(--mono);
  font-size: .76rem;
  color: var(--ink-dim);
  margin: 0 0 .8em;
}

.opt pre {
  margin: 12px 0 0;
  padding: 14px;
  overflow-x: auto;
  font-size: .8rem;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}