/* xssh.io: the app icon as a system. Navy tile, two strokes, one teal cursor. */
@font-face {
  font-family: "Schibsted Grotesk";
  src: url(/fonts/schibsted-latin.woff2) format("woff2-variations");
  font-weight: 400 900;
  font-display: swap;
  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: "Schibsted Grotesk";
  src: url(/fonts/schibsted-latin-ext.woff2) format("woff2-variations");
  font-weight: 400 900;
  font-display: swap;
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, 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;
}
/* Commit Mono, subset to ASCII, Latin-1, punctuation, arrows and box drawing. */
@font-face {
  font-family: "Commit Mono";
  src: url(/fonts/commit-mono-400.woff2) format("woff2");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "Commit Mono";
  src: url(/fonts/commit-mono-600.woff2) format("woff2");
  font-weight: 600;
  font-display: swap;
}

:root {
  color-scheme: dark;
  --bg: #090e22;
  --bg-2: #0c1330;
  --panel: #111a3c;
  --panel-2: #172150;
  --well: #060a1a;
  --line: rgba(165, 180, 252, 0.12);
  --line-2: rgba(165, 180, 252, 0.22);
  --line-3: rgba(165, 180, 252, 0.34);
  --hover: rgba(165, 180, 252, 0.08);
  --code-bg: rgba(165, 180, 252, 0.1);
  --bar: rgba(9, 14, 34, 0.84);
  --btn-hover: #1d2960;
  --scroll: #2a3566;
  --fg: #e8ecf9;
  --fg-2: #a7b1d4;
  --fg-3: #8590b8;
  --prose: #d3d9f0;
  --code-fg: #e4e9ff;
  --cyan: #67e8f9;
  --lav: #c4b5fd;
  --sky: #93c5fd;
  --teal: #2dd4bf;
  --teal-hi: #5eead4;
  --on-teal: #04211d;
  --teal-soft: rgba(45, 212, 191, 0.14);
  --select: rgba(103, 232, 249, 0.28);
  --shadow-1: 0 18px 40px -24px rgba(0, 0, 0, 0.8);
  --shadow-2: 0 40px 80px -36px rgba(0, 0, 0, 0.85), 0 12px 24px -12px rgba(0, 0, 0, 0.5);
  --r: 14px;
  --r-s: 10px;
  --sans: "Schibsted Grotesk", ui-sans-serif, system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: "Commit Mono", ui-monospace, "Cascadia Mono", Consolas, "PingFang SC", "Microsoft YaHei", monospace;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 80px; scrollbar-color: var(--scroll) var(--bg); }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 400 16px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
::selection { background: var(--select); color: var(--fg); }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; border-radius: 6px; }
a { color: var(--cyan); text-decoration: none; text-underline-offset: 3px; }
a:hover { text-decoration: underline; }
code, pre, kbd { font-family: var(--mono); font-variant-ligatures: none; }
img, svg { display: block; }
h1, h2, h3 { margin: 0; font-weight: 680; text-wrap: balance; }
p { margin: 0; text-wrap: pretty; }
ul, ol { margin: 0; padding: 0; }
.dim { color: var(--fg-3); }
.label { display: block; margin-bottom: 8px; color: var(--fg-3); font-size: 13px; font-weight: 500; }

.wrap { width: 100%; max-width: 1180px; margin: 0 auto; padding-inline: 32px; }
.skip { position: absolute; left: -9999px; top: 8px; z-index: 10; padding: 8px 12px; background: var(--teal); color: var(--on-teal); border-radius: 8px; }
.skip:focus { left: 8px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }

/* Header */
.top {
  position: sticky; top: 0; z-index: 5;
  background: var(--bar);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.top-in { display: flex; align-items: center; gap: 14px; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--fg); font-weight: 650; font-size: 18px; letter-spacing: -0.01em; }
.brand:hover { text-decoration: none; }
.brand.small { font-size: 15px; gap: 8px; }
.ver { padding: 2px 8px; border: 1px solid var(--line-2); border-radius: 999px; color: var(--fg-2); font: 400 12px/1.5 var(--mono); }
.ver:hover { color: var(--fg); border-color: var(--fg-3); text-decoration: none; }
.nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav a { display: inline-flex; align-items: center; gap: 7px; height: 36px; padding: 0 12px; border-radius: 9px; color: var(--fg-2); font-size: 15px; font-weight: 500; }
.nav a:hover { color: var(--fg); background: var(--hover); text-decoration: none; }
.nav a[aria-current="page"] { color: var(--fg); background: var(--hover); }
.nav .lang { border: 1px solid var(--line-2); margin-left: 6px; }

/* Buttons */
.btn, .copy {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 40px; padding: 0 14px;
  border: 1px solid var(--line-2); border-radius: var(--r-s);
  background: var(--panel-2); color: var(--fg);
  font: 500 14px/1 var(--sans); white-space: nowrap; cursor: pointer;
  transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease);
}
.btn:hover, .copy:hover { background: var(--btn-hover); border-color: var(--line-3); text-decoration: none; }
.btn .dim { font-family: var(--mono); font-size: 12.5px; }
.btn.primary, .copy.primary { background: var(--teal); border-color: transparent; color: var(--on-teal); font-weight: 600; }
.btn.primary:hover, .copy.primary:hover { background: var(--teal-hi); }
.copy.ghost { height: 32px; padding: 0 10px; background: transparent; border-color: transparent; color: var(--fg-3); font-size: 13px; }
.copy.ghost:hover { background: var(--hover); color: var(--fg); }
.copy.ghost.done { color: var(--teal); }
.copy .i { display: inline-flex; }
.more { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 500; }

/* The cursor from the icon: a lit teal bar after the last letter. */
.cursor {
  display: inline-block;
  width: 0.5em; height: 0.13em;
  margin-left: 0.14em;
  border-radius: 0.04em;
  background: var(--teal);
  vertical-align: baseline;
  animation: blink 1.1s steps(1, end) 0.6s 5;
}
@keyframes blink { 50% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) {
  .cursor { animation: none; }
  .btn, .copy { transition: none; }
}

/* Code */
.codeline {
  display: flex; align-items: center; gap: 8px;
  min-width: 0; padding: 4px 4px 4px 14px;
  background: var(--well); border: 1px solid var(--line); border-radius: var(--r-s);
}
.codeline code { flex: 1; min-width: 0; overflow-x: auto; white-space: nowrap; font-size: 14px; line-height: 32px; color: var(--fg); scrollbar-width: none; }
.codeline .ps { color: var(--fg-3); }

.term { margin: 0; background: var(--well); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; min-width: 0; }
.term figcaption { padding: 10px 16px; border-bottom: 1px solid var(--line); color: var(--fg-3); font: 400 12.5px/1.4 var(--mono); }
.term pre { margin: 0; padding: 16px 18px 18px; overflow-x: auto; font-size: 13.5px; line-height: 1.75; color: var(--fg); }
.term .ps { color: var(--teal); }
.term .out { color: var(--fg-3); }
.st { color: var(--cyan); }
.st.st-done { color: var(--teal); }
.st.st-waiting { color: var(--lav); }
.st.st-tui { color: var(--sky); }
.st.st-quiet, .st.st-disconnected { color: var(--fg-2); }

/* Hero */
.hero { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 56px; align-items: center; padding-top: 88px; padding-bottom: 104px; }
.hero h1 { font-size: clamp(2.5rem, 5vw, 3.9rem); line-height: 1.04; letter-spacing: -0.03em; font-weight: 700; }
.lede { margin-top: 22px; max-width: 60ch; color: var(--fg-2); font-size: 18px; line-height: 1.65; }
.ask { margin-top: 34px; }
.ask-box {
  display: flex; align-items: center; gap: 12px;
  padding: 8px 8px 8px 18px;
  background: var(--panel); border: 1px solid var(--line-2); border-radius: var(--r);
  box-shadow: var(--shadow-1);
}
.ask-box code { flex: 1; min-width: 0; font-size: 15px; line-height: 1.5; color: var(--fg); overflow-wrap: anywhere; }
.ask-box .copy { height: 42px; padding: 0 18px; }
.alts { display: grid; grid-template-columns: minmax(0, 1fr); gap: 18px; margin-top: 22px; }
.dl-row { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.meta { margin-top: 26px; color: var(--fg-3); font-size: 14px; }
.hero-art .term { box-shadow: var(--shadow-2); }

/* Sections */
.head { max-width: 720px; margin-bottom: 36px; }
.head h2 { font-size: clamp(1.75rem, 3vw, 2.35rem); line-height: 1.15; letter-spacing: -0.02em; }
.head p { margin-top: 12px; color: var(--fg-2); font-size: 17px; }
.head p code { color: var(--fg); font-size: 0.88em; overflow-wrap: anywhere; }
.head .fmt { margin-top: 14px; }
.head .fmt code { display: inline-block; padding: 6px 12px; background: var(--well); border: 1px solid var(--line); border-radius: var(--r-s); font-size: 14px; }
.block { padding-top: 112px; }
.band { padding: 96px 0; background: var(--bg-2); border-block: 1px solid var(--line); }

.compare { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 24px; }
.case { display: flex; flex-direction: column; min-width: 0; }
.case .term { flex: 1; }
.case p { margin-top: 16px; color: var(--fg-2); font-size: 15px; max-width: 54ch; }
.case.bad .term pre { color: var(--fg-2); }
.case.good figcaption { color: var(--teal); }

.cmds { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); column-gap: 56px; margin: 0; }
.cmd { padding: 18px 0; border-top: 1px solid var(--line); min-width: 0; }
.cmd dt code { color: var(--fg); font-size: 14.5px; overflow-wrap: anywhere; }
.cmd dt .x { color: var(--fg-3); }
.cmd dd { margin: 6px 0 0; color: var(--fg-2); font-size: 15px; }

.states { list-style: none; border-top: 1px solid var(--line); }
.state { display: grid; grid-template-columns: 150px minmax(0, 320px) minmax(0, 1fr); gap: 24px; align-items: baseline; padding: 16px 0; border-bottom: 1px solid var(--line); }
.state .name { display: inline-flex; align-items: center; gap: 10px; font-weight: 560; }
.state code { font-size: 14px; overflow-wrap: anywhere; }
.state .mean { color: var(--fg-2); font-size: 15px; }
.dot { width: 8px; height: 8px; border-radius: 50%; flex: none; background: var(--fg-3); }
.s-done { background: var(--teal); }
.s-waiting { background: var(--lav); }
.s-running { background: var(--cyan); }
.s-tui { background: var(--sky); }
.s-quiet { background: var(--fg-3); }
.s-disconnected { background: transparent; border: 1.5px solid var(--fg-3); }

.keys { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 56px; align-items: center; }
.checks { list-style: none; display: grid; gap: 14px; }
.checks li { display: flex; gap: 12px; color: var(--fg-2); }
.checks svg { flex: none; margin-top: 4px; color: var(--teal); }
.keys .term pre { white-space: pre-wrap; overflow-wrap: anywhere; }

.steps { list-style: none; display: grid; gap: 28px; max-width: 820px; }
.step { display: grid; grid-template-columns: 32px minmax(0, 1fr); gap: 18px; }
.step .num { display: grid; place-items: center; width: 32px; height: 32px; border: 1px solid var(--line-2); border-radius: 50%; color: var(--teal); font: 600 14px/1 var(--mono); }
.step h3 { font-size: 18px; line-height: 32px; }
.step p { margin: 2px 0 12px; color: var(--fg-2); }
.agents { margin-top: 40px; max-width: 820px; color: var(--fg-3); font-size: 14px; }
.agents span { color: var(--fg-2); font-weight: 500; margin-right: 4px; }

/* Footer */
.foot { margin-top: 128px; border-top: 1px solid var(--line); }
.foot-in { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; padding-top: 28px; padding-bottom: 40px; color: var(--fg-3); font-size: 14px; }
.foot nav { display: flex; gap: 20px; margin-left: auto; flex-wrap: wrap; }
.foot nav a { color: var(--fg-2); }
.foot nav a:hover { color: var(--fg); }

/* Inner pages */
.page { padding-top: 64px; }
.page.narrow { max-width: 900px; }
.page-head { margin-bottom: 36px; }
.page-head h1 { font-size: clamp(2.1rem, 4vw, 2.9rem); line-height: 1.1; letter-spacing: -0.03em; }
.page-head p { margin-top: 12px; max-width: 64ch; color: var(--fg-2); font-size: 17px; }
.page-head p.dim { color: var(--fg-3); font-size: 15px; }

.install { margin-bottom: 40px; }
.install .dim { margin-top: 10px; font-size: 14px; }
.release { padding: 28px; background: var(--panel); border: 1px solid var(--line); border-radius: 18px; }
.release + .release { margin-top: 24px; }
.release-head { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 20px; }
.release-head h2 { font: 600 26px/1.2 var(--mono); letter-spacing: -0.02em; }
.release-head time { margin-left: auto; font: 14px var(--mono); }
.pill { padding: 3px 10px; border-radius: 999px; background: var(--teal-soft); color: var(--teal); font-size: 12.5px; font-weight: 600; }
.file { padding: 20px; background: var(--bg); border: 1px solid var(--line); border-radius: var(--r); }
.file-main { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.fname { font-size: 15px; color: var(--fg); }
.file-main .dim { margin-top: 4px; font-size: 14px; }
.facts { margin: 20px 0 0; display: grid; grid-template-columns: minmax(0, 1fr); gap: 16px; }
.facts dt { margin-bottom: 6px; color: var(--fg-3); font-size: 13px; font-weight: 500; }
.facts dd { margin: 0; min-width: 0; }
.hash { display: flex; align-items: center; gap: 8px; }
.hash code { min-width: 0; overflow-wrap: anywhere; font-size: 13.5px; color: var(--fg-2); }
.release h3 { margin-top: 24px; font-size: 15px; color: var(--fg-2); font-weight: 560; }
.notes { margin-top: 10px; padding-left: 20px; display: grid; gap: 6px; color: var(--fg-2); font-size: 15px; }
.notes li::marker { color: var(--fg-3); }

.nf { text-align: center; padding-top: 120px; display: grid; justify-items: center; gap: 14px; }
.code404 { font: 600 clamp(4rem, 12vw, 7rem)/1 var(--mono); letter-spacing: -0.04em; color: var(--fg); }
.nf p:not(.code404) { color: var(--fg-2); margin-bottom: 10px; }

/* Docs */
.docs { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 64px; align-items: start; }
.toc nav { position: sticky; top: 88px; max-height: calc(100vh - 110px); overflow-y: auto; padding-bottom: 24px; scrollbar-width: thin; }
.toc ol { list-style: none; display: grid; gap: 2px; margin-bottom: 18px; }
.toc a:not(.more) { display: block; padding: 5px 10px; border-radius: 7px; color: var(--fg-2); font-size: 14px; line-height: 1.4; }
.toc a:not(.more):hover { color: var(--fg); background: var(--hover); text-decoration: none; }
.toc .more { padding-left: 10px; font-size: 13.5px; }
.prose { max-width: 76ch; font-size: 15.5px; line-height: 1.7; color: var(--prose); }
.prose > :first-child { margin-top: 0; }
.prose h2 { margin: 56px 0 16px; padding-top: 28px; border-top: 1px solid var(--line); font-size: 24px; line-height: 1.25; letter-spacing: -0.02em; color: var(--fg); }
.prose h3 { margin: 32px 0 10px; font-size: 18px; color: var(--fg); }
.prose p, .prose ul, .prose ol, .prose pre, .prose table, .prose blockquote { margin: 0 0 16px; }
.prose ul, .prose ol { padding-left: 22px; }
.prose li + li { margin-top: 4px; }
.prose li::marker { color: var(--fg-3); }
.prose strong { color: var(--fg); font-weight: 600; }
.prose :not(pre) > code { padding: 0.1em 0.36em; border-radius: 5px; background: var(--code-bg); color: var(--code-fg); font-size: 0.88em; overflow-wrap: break-word; }
.prose code.nb { white-space: nowrap; }
.prose pre { padding: 14px 16px; background: var(--well); border: 1px solid var(--line); border-radius: 12px; overflow-x: auto; font-size: 13.5px; line-height: 1.65; color: var(--fg); }
.prose table { display: block; overflow-x: auto; border-collapse: collapse; font-size: 14.5px; }
.prose th, .prose td { padding: 8px 14px 8px 0; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.prose th { color: var(--fg); font-weight: 600; }
.prose blockquote { padding-left: 16px; border-left: 1px solid var(--line-2); color: var(--fg-2); }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 32px 0; }

/* CJK: no negative tracking, looser leading. */
:lang(zh) h1, :lang(zh) h2 { letter-spacing: 0; word-break: keep-all; }
:lang(zh) .hero h1 { line-height: 1.18; }
:lang(zh) .head h2 { line-height: 1.3; }

@media (max-width: 1000px) {
  .hero { grid-template-columns: minmax(0, 1fr); gap: 48px; padding-top: 56px; padding-bottom: 80px; }
  .keys { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .state { grid-template-columns: 130px minmax(0, 1fr); }
  .state .mean { grid-column: 2; }
  .docs { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .toc { order: 0; }
  .toc nav { position: static; max-height: none; padding: 16px; background: var(--panel); border: 1px solid var(--line); border-radius: var(--r); }
  .toc ol { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
}
@media (max-width: 720px) {
  .wrap { padding-inline: 16px; }
  .top-in { gap: 10px; height: 58px; }
  .nav { gap: 0; }
  .nav a { padding: 0 9px; font-size: 14.5px; }
  .nav .gh, .ver { display: none; }
  .hero { padding-top: 40px; }
  .lede { font-size: 16.5px; }
  .ask-box { flex-direction: column; align-items: stretch; padding: 14px; }
  .ask-box .copy { width: 100%; }
  .compare, .cmds { grid-template-columns: minmax(0, 1fr); }
  .block { padding-top: 80px; }
  .band { padding: 72px 0; }
  .state { grid-template-columns: minmax(0, 1fr); gap: 6px; }
  .state .mean { grid-column: auto; }
  .release { padding: 18px; }
  .file { padding: 16px; }
  .release-head time { margin-left: 0; }
  .foot nav { margin-left: 0; }
  .term pre { font-size: 12.5px; white-space: pre-wrap; overflow-wrap: anywhere; }
}

/* Touch: every control at least 44px tall. */
@media (pointer: coarse) {
  .nav a { height: 44px; min-width: 44px; justify-content: center; }
  .brand { min-height: 44px; }
  .copy.ghost { height: 40px; min-width: 44px; }
  .codeline { padding-block: 2px; }
  .ask-box .copy, .btn { height: 46px; }
  .more { min-height: 44px; }
  .foot nav a { display: inline-flex; align-items: center; min-height: 44px; }
  .toc a:not(.more) { padding-block: 11px; }
}