/* pacpad · terminal native. The page is one TUI window: palette, borders,
   tabs and modals come straight from src/ui/theme.rs. */

/* JetBrains Mono (OFL-1.1, see fonts/OFL.txt), subset to Latin, arrows,
   box drawing and block elements so the TUI's lines join up. */
@font-face { font-family: "pp-mono"; src: url(fonts/jetbrains-mono-regular.woff2) format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "pp-mono"; src: url(fonts/jetbrains-mono-bold.woff2) format("woff2"); font-weight: 500 700; font-display: swap; }
@font-face { font-family: "pp-mono"; src: url(fonts/jetbrains-mono-extrabold.woff2) format("woff2"); font-weight: 800; font-display: swap; }

:root {
  --bg: #121211;
  --bg2: #161615;
  --bg3: #1b1a18;
  --sel: #24272b;
  --fg: #ded6c8;
  --d: #a39d91;
  --f: #6b655b;
  --b: #3a3631;
  --b2: #423d37;
  --a: #6193be;
  --g: #769f69;
  --m: #cf8e42;
  --r: #d05a3f;
  --y: #d8ae34;
  --ink: #161615;
  --edge: 10px;
  --bar: 44px;
  --stat: 30px;
  --ease: cubic-bezier(.2, .7, .1, 1);
  --mono: "pp-mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { background: var(--bg); scroll-behavior: smooth; scroll-padding-top: calc(var(--edge) + var(--bar) + 18px); overflow-x: clip; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 15px/1.65 var(--mono);
  font-variant-ligatures: none;
  -webkit-font-smoothing: antialiased;
  padding: var(--edge);
  min-height: 100vh;
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

a { color: var(--a); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
code { font: inherit; color: var(--m); }
b { font-weight: 700; color: var(--fg); }
kbd {
  font: 700 12px/1 var(--mono); display: inline-block; padding: 3px 6px; min-width: 1.9em; text-align: center;
  background: var(--f); color: var(--ink); border-radius: 0; text-indent: 0;
}
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
:focus-visible { outline: 1px solid var(--y); outline-offset: 2px; }
::selection { background: var(--a); color: var(--ink); }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: fixed; left: 20px; top: -60px; z-index: 100; background: var(--y); color: var(--ink); padding: 6px 10px; }
.skip:focus { top: 20px; }

/* colour helpers, shared with the demo grid */
.c-fg { color: var(--fg); } .c-d { color: var(--d); } .c-f { color: var(--f); } .c-b { color: var(--b2); }
.c-a { color: var(--a); } .c-g { color: var(--g); } .c-m { color: var(--m); } .c-r { color: var(--r); }
.c-y { color: var(--y); } .c-ink { color: var(--ink); }
.b-sel { background: var(--sel); } .b-acc { background: var(--a); } .b-grn { background: var(--g); }
.b-red { background: var(--r); } .b-fnt { background: var(--f); } .b-fg { background: var(--fg); }
.B { font-weight: 700; }
.w1 { display: inline-block; width: 1ch; text-align: center; font-style: normal; overflow: visible; }

/* ---------------------------------------------------------------- window edge */
.edge {
  position: fixed; inset: var(--edge); z-index: 40; pointer-events: none;
  border: 1px solid var(--b);
  box-shadow: 0 0 0 calc(var(--edge) + 2px) var(--bg);
}
.edge-ttl, .edge-r { position: absolute; top: -.8em; background: var(--bg); padding: 0 8px; font-size: 13px; line-height: 1.5; }
.edge-ttl { left: 16px; font-weight: 800; letter-spacing: .02em; }
.edge-r { right: 16px; color: var(--f); }

/* ---------------------------------------------------------------- tab bar */
.bar {
  position: sticky; top: var(--edge); z-index: 30;
  display: flex; align-items: center; gap: 16px;
  height: var(--bar); margin: 0 1px; padding: 0 18px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--b);
}
.tabs { position: relative; display: flex; align-items: center; white-space: nowrap; overflow-x: auto; scrollbar-width: none; flex: 1; min-width: 0; height: 100%; }
.tabs::-webkit-scrollbar { display: none; }
.tabs a { position: relative; z-index: 1; color: var(--d); padding: 3px 12px; font-size: 14px; transition: color .25s var(--ease); }
.tabs a:hover { color: var(--fg); text-decoration: none; }
.tabs a .tk { color: var(--f); transition: color .25s; }
.tabs a.on { color: var(--ink); font-weight: 700; }
.tabs a.on .tk { color: var(--ink); }
.tabs i { color: var(--b2); font-style: normal; }
.tab-hl {
  position: absolute; z-index: 0; top: 50%; height: 28px; transform: translateY(-50%);
  left: 0; width: 0; background: var(--a);
  transition: left .42s var(--ease), width .42s var(--ease);
}
.bar-r { display: flex; gap: 18px; align-items: center; white-space: nowrap; font-size: 13px; color: var(--d); }
.lnk { color: var(--d); display: inline-flex; gap: 6px; align-items: center; }
.lnk:hover { color: var(--fg); text-decoration: none; }
.lnk kbd { font-size: 11px; padding: 2px 5px; min-width: 0; }

/* ---------------------------------------------------------------- layout + panes */
main { padding: 34px clamp(16px, 4vw, 56px) calc(var(--stat) + 40px); max-width: 1440px; margin: 0 auto; }
.sec { margin: 0 0 64px; }
.pane {
  position: relative; border: 1px solid var(--b); padding: 30px clamp(16px, 3vw, 34px) 28px;
  transition: border-color .35s var(--ease), box-shadow .35s var(--ease);
}
.pane-ttl, .pane-ttl-r {
  position: absolute; top: 0; transform: translateY(-50%); background: var(--bg);
  padding: 0 8px; font-size: 14px; line-height: 1.4; white-space: nowrap; max-width: calc(100% - 40px); overflow: hidden; text-overflow: ellipsis;
}
.pane-ttl { left: 14px; color: var(--a); font-weight: 700; margin: 0; transition: color .35s; }
.pane-ttl-r { right: 14px; color: var(--f); font-size: 12.5px; }
.pane.focus { border-color: var(--a); box-shadow: 0 0 0 1px color-mix(in srgb, var(--a) 35%, transparent), 0 20px 60px -30px color-mix(in srgb, var(--a) 45%, transparent); }
.pane.focus > .pane-ttl { color: var(--y); }
.red-pane { border-color: color-mix(in srgb, var(--r) 55%, var(--b)); }
.red-pane > .pane-ttl { color: var(--r); }

/* border draw-in: a light sweep runs along the top edge once */
.js .pane::before {
  content: ""; position: absolute; left: -1px; right: -1px; top: -1px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--a) 40%, var(--y) 60%, transparent);
  transform: scaleX(0); transform-origin: left; opacity: 0; pointer-events: none;
}
.js .pane.in::before { animation: sweep 1.1s var(--ease) both; }
@keyframes sweep { 0% { transform: scaleX(0); opacity: 1; } 70% { transform: scaleX(1); opacity: 1; } 100% { transform: scaleX(1); opacity: 0; } }
.js .pane { border-color: transparent; }
.js .pane.in { border-color: var(--b); transition: border-color .9s .15s var(--ease), box-shadow .35s var(--ease); }
.js .pane.in.focus { border-color: var(--a); transition-delay: 0s; }
.js .red-pane.in { border-color: color-mix(in srgb, var(--r) 55%, var(--b)); }

.js .rv { opacity: 0; transform: translateY(14px); transition: opacity .7s var(--ease), transform .7s var(--ease); transition-delay: calc(var(--i, 0) * 70ms); }
.js .rv.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .js .rv { opacity: 1; transform: none; transition: none; }
  .js .pane { border-color: var(--b); }
  .js .pane.in::before { animation: none; }
  .tab-hl { transition: none; }
}

.lead { font-size: clamp(15px, 1.4vw, 17.5px); color: var(--d); max-width: 78ch; margin: 0 0 26px; line-height: 1.7; }
.note { color: var(--d); font-size: 14px; margin: 22px 0 0; }

/* ---------------------------------------------------------------- hero */
.hero { margin-bottom: 40px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); gap: clamp(24px, 4vw, 64px); align-items: center; padding: clamp(16px, 3vw, 40px) 0 clamp(36px, 4vw, 52px); }
.idx { font-size: 13px; color: var(--f); margin: 0; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.idx-bar { display: inline-block; width: 150px; height: 12px; background: var(--b); position: relative; }
.idx-bar span { position: absolute; inset: 0; background: var(--y); transform-origin: left; transform: scaleX(0); }
.idx.in .idx-bar span { animation: fill 1.6s .3s var(--ease) forwards; }
@keyframes fill { to { transform: scaleX(1); } }
.idx-n { color: var(--fg); }
.word { font: 800 clamp(72px, 11.5vw, 172px)/.88 var(--mono); letter-spacing: -.065em; margin: 22px 0 0; }
.word > span:not(.sr) { display: inline-block; }
.word .c-r { text-shadow: 0 0 60px color-mix(in srgb, var(--r) 30%, transparent); }
.word .c-a { text-shadow: 0 0 60px color-mix(in srgb, var(--a) 30%, transparent); }
.sub { font-size: clamp(15px, 1.5vw, 18px); color: var(--d); line-height: 1.7; margin: 28px 0 0; max-width: 60ch; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 32px; }
.btn {
  display: inline-flex; align-items: center; gap: 10px; padding: 9px 14px 9px 9px;
  border: 1px solid var(--b2); color: var(--fg); font-size: 14px;
  transition: border-color .2s, background .2s, transform .2s var(--ease);
}
.btn:hover { border-color: var(--a); text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(1px); }
.btn.pri { background: var(--a); border-color: var(--a); color: var(--ink); font-weight: 700; }
.btn.pri kbd { background: var(--ink); color: var(--a); }
.btn.pri:hover { background: color-mix(in srgb, var(--a) 88%, white); }
.btn.ghost { color: var(--d); }

.qi { padding: 26px 22px 18px; }
.qi-l { margin: 0; font-size: 13.5px; }
.qi-l div { display: grid; grid-template-columns: 15ch minmax(0, 1fr); padding: 3px 0; }
.qi-l dt { color: var(--f); position: relative; }
.qi-l dt::after { content: ":"; position: absolute; right: 1.2ch; }
.qi-l dd { margin: 0; color: var(--fg); overflow-wrap: anywhere; }

/* ---------------------------------------------------------------- demo */
.demo-pane { padding: 26px clamp(10px, 2vw, 26px) 18px; }
.demo { position: relative; container-type: inline-size; background: var(--bg2); outline: none; cursor: pointer; transition: box-shadow .35s var(--ease); }
.demo pre.tui {
  margin: 0; padding: .9em 0; color: var(--fg); white-space: pre; overflow: hidden;
  font: 400 min(19px, calc(100cqw / 57.2))/1.24 var(--mono);
  text-align: center; user-select: none;
}
.demo pre.tui span { display: inline; }
.demo-cover {
  position: absolute; inset: 0; display: flex; align-items: flex-end; justify-content: center; padding-bottom: 18px;
  background: linear-gradient(180deg, transparent 60%, color-mix(in srgb, var(--bg2) 85%, transparent));
  opacity: 0; transition: opacity .3s var(--ease); cursor: pointer;
}
.demo-cover span { background: var(--bg); border: 1px solid var(--y); color: var(--y); padding: 6px 12px 6px 6px; font-size: 13px; display: inline-flex; gap: 8px; align-items: center; transform: translateY(6px); transition: transform .3s var(--ease); }
.demo-cover kbd { background: var(--y); }
.demo:hover .demo-cover, .demo:focus-visible .demo-cover { opacity: 1; }
.demo:hover .demo-cover span { transform: none; }
.demo.driving { cursor: default; box-shadow: 0 0 0 1px var(--y), 0 30px 90px -40px color-mix(in srgb, var(--y) 55%, transparent); }
.demo.driving .demo-cover { display: none; }
.demo-pane.driving { border-color: var(--y) !important; }
.demo-pane.driving > .pane-ttl { color: var(--y); }

.demo-ctl { display: flex; justify-content: space-between; align-items: center; gap: 14px; margin-top: 14px; flex-wrap: wrap; }
.dc-l { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.chip { border: 1px solid var(--b2); padding: 4px 10px; font-size: 12.5px; color: var(--d); display: inline-flex; align-items: center; gap: 8px; transition: border-color .2s, color .2s; }
.chip:hover { border-color: var(--a); color: var(--fg); }
.chip .led { width: 7px; height: 7px; border-radius: 50%; background: var(--f); transition: background .3s, box-shadow .3s; }
.chip[aria-pressed="true"] .led { background: var(--g); box-shadow: 0 0 8px var(--g); animation: blink 1.6s infinite; }
@keyframes blink { 50% { opacity: .4; } }
.dc-mode { font-size: 12.5px; color: var(--f); margin-left: 6px; }
.dc-mode.on { color: var(--y); }
.keyviz { display: flex; gap: 6px; align-items: center; min-height: 26px; justify-content: flex-end; flex: 1; overflow: hidden; }
.keyviz kbd { animation: kin .35s var(--ease) both; transition: opacity .6s, transform .6s; }
.keyviz kbd.auto { background: var(--b2); color: var(--fg); }
.keyviz kbd.you { background: var(--y); color: var(--ink); }
.keyviz kbd.out { opacity: 0; transform: translateY(-8px); }
@keyframes kin { from { opacity: 0; transform: translateY(8px) scale(.85); } }

.touchkeys { display: none; grid-template-columns: repeat(4, 1fr); gap: 6px; margin-top: 12px; }
.touchkeys button { border: 1px solid var(--b2); background: var(--bg3); padding: 7px 0; font-size: 13px; color: var(--fg); touch-action: manipulation; }
.touchkeys button:active { background: var(--a); color: var(--ink); }
@media (pointer: coarse) { .touchkeys { display: grid; } }

/* ---------------------------------------------------------------- tables */
.tbl { overflow-x: auto; border: 1px solid var(--b); }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { text-align: left; font-weight: 400; color: var(--f); padding: 10px 14px; border-bottom: 1px solid var(--b); white-space: nowrap; font-size: 12.5px; text-transform: uppercase; letter-spacing: .06em; }
td { padding: 9px 14px; border-bottom: 1px dashed var(--b); color: var(--d); vertical-align: top; }
tr:last-child td { border-bottom: 0; }
td:first-child { color: var(--fg); }
tbody tr { transition: background .2s; }
tbody tr:hover { background: var(--sel); }
tbody tr:hover td:first-child { box-shadow: inset 2px 0 0 var(--a); }
td kbd { font-size: 11px; padding: 2px 5px; margin-right: 4px; }

/* ---------------------------------------------------------------- why */
.why-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; margin-top: 26px; border: 1px solid var(--b); }
.mini { padding: 18px 20px; border-right: 1px solid var(--b); transition: background .25s; }
.mini:last-child { border-right: 0; }
.mini:hover { background: var(--bg3); }
.mini h3 { font-size: 15px; margin: 0 0 8px; }
.mini p { margin: 0; color: var(--d); font-size: 14px; line-height: 1.65; }

/* ---------------------------------------------------------------- how */
.flow { display: grid; gap: 18px; }
.lane { display: grid; grid-template-columns: 7ch minmax(0, 1fr); align-items: center; gap: 12px; }
.lane-n { font-weight: 700; font-size: 14px; }
.track { position: relative; display: flex; align-items: center; min-width: 0; }
.node {
  position: relative; z-index: 1; flex: none;
  border: 1px solid var(--b2); background: var(--bg); padding: 9px 12px; font-size: 13.5px; color: var(--fg); white-space: nowrap;
  transition: border-color .25s, color .25s, background .25s, transform .25s var(--ease), box-shadow .25s;
}
.node:hover { border-color: var(--a); transform: translateY(-1px); }
.node.lit { border-color: var(--a); box-shadow: 0 0 0 3px color-mix(in srgb, var(--a) 18%, transparent); }
.node.red.lit, .node.red:hover { border-color: var(--r); box-shadow: 0 0 0 3px color-mix(in srgb, var(--r) 20%, transparent); }
.node.on { background: var(--a); border-color: var(--a); color: var(--ink); font-weight: 700; }
.node.red.on { background: var(--r); border-color: var(--r); }
.wire { flex: 1; min-width: 18px; height: 0; border-top: 1px dashed var(--b2); position: relative; }
.wire::after { content: "▶"; position: absolute; right: -3px; top: -.72em; font-size: 9px; color: var(--b2); }
.pkt { position: absolute; z-index: 0; top: 50%; left: 0; width: 8px; height: 8px; margin: -4px 0 0 -4px; border-radius: 50%; background: var(--y); box-shadow: 0 0 10px var(--y); opacity: 0; pointer-events: none; }
.lane[data-lane="write"] .pkt { background: var(--r); box-shadow: 0 0 10px var(--r); }
.lane[data-lane="apps"] .pkt { background: var(--g); box-shadow: 0 0 10px var(--g); }
.flow-det { margin-top: 26px; border: 1px solid var(--b); background: var(--bg2); padding: 18px 20px; min-height: 170px; }
.fd-h { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 8px; }
.fd-t { font-weight: 700; color: var(--fg); }
.fd-b { margin: 0; color: var(--d); max-width: 90ch; font-size: 14.5px; }
.fd-c { margin: 12px 0 0; font: 13px/1.6 var(--mono); color: var(--m); white-space: pre-wrap; overflow-wrap: anywhere; }
.fd-c:empty { display: none; }
.flow-det.swap .fd-b, .flow-det.swap .fd-c, .flow-det.swap .fd-t { animation: swap .4s var(--ease); }
@keyframes swap { from { opacity: 0; transform: translateX(-6px); } }

/* ---------------------------------------------------------------- safety */
.safe-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: clamp(24px, 4vw, 54px); align-items: start; }
.ticks { list-style: none; padding: 0; margin: 0 0 24px; color: var(--d); font-size: 14.5px; }
.ticks li { padding: 5px 0 5px 2.4ch; text-indent: -2.4ch; }
.ticks kbd { font-size: 11px; padding: 2px 5px; min-width: 0; }
.prot td:first-child { color: var(--r); }
.guard { position: sticky; top: calc(var(--edge) + var(--bar) + 30px); }
.gm { position: relative; border: 1px solid var(--r); background: var(--bg2); padding: 28px 22px 18px; font-size: 14px; transition: border-color .3s, box-shadow .3s; }
.gm p { margin: 0 0 4px; }
.gm-t { position: absolute; top: 0; left: 50%; transform: translate(-50%, -50%); background: var(--r); color: var(--ink); font-weight: 700; padding: 1px 10px; white-space: nowrap; }
.gm-w { margin-top: 14px !important; }
.gm-in { display: flex; gap: 10px; align-items: center; margin: 16px 0 18px; flex-wrap: wrap; cursor: text; }
.gm-in input { flex: 1; min-width: 10ch; background: transparent; border: 0; border-bottom: 1px solid var(--b2); color: var(--r); font: 700 15px var(--mono); padding: 3px 0; outline: none; caret-color: var(--r); letter-spacing: .1em; }
.gm-in input:focus { border-bottom-color: var(--r); }
.gm-k { display: flex; gap: 14px; flex-wrap: wrap; }
.kh { display: inline-flex; gap: 8px; align-items: center; color: var(--d); font-size: 13.5px; }
.kk { background: var(--f); color: var(--ink); font-weight: 700; padding: 0 7px; transition: background .25s; }
.kh:disabled { cursor: not-allowed; opacity: .75; }
#guard-ok:not(:disabled) .kk { background: var(--g); }
#guard-ok:not(:disabled) { color: var(--fg); }
.gm.armed { border-color: var(--g); box-shadow: 0 0 0 3px color-mix(in srgb, var(--g) 15%, transparent); }
.gm.shake { animation: shake .4s; }
@keyframes shake { 20%, 60% { transform: translateX(-6px); } 40%, 80% { transform: translateX(6px); } }
.gm-msg { font-size: 13px; margin: 12px 0 0; min-height: 1.6em; transition: color .3s; }

/* ---------------------------------------------------------------- install */
.inst-grid { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: clamp(20px, 3vw, 40px); align-items: start; }
.shell-wrap { border: 1px solid var(--b2); background: var(--bg2); position: relative; }
.shell-wrap::before { content: "bash"; position: absolute; top: 0; left: 12px; transform: translateY(-50%); background: var(--bg); color: var(--f); padding: 0 6px; font-size: 12px; line-height: 1.4; }
.shell { height: 560px; overflow-y: auto; padding: 16px 16px 12px; font-size: 13px; line-height: 1.55; cursor: text; scrollbar-width: thin; scrollbar-color: var(--b2) transparent; }
.sh-row { white-space: pre-wrap; overflow-wrap: anywhere; min-height: 1.55em; }
.sh-line { display: flex; align-items: baseline; white-space: pre; }
.sh-ps1 { flex: none; }
.sh-in { flex: 1; min-width: 0; background: transparent; border: 0; outline: none; color: var(--fg); font: inherit; padding: 0; caret-color: var(--y); }
.sh-caret { display: inline-block; width: .6em; height: 1.1em; vertical-align: -.2em; background: var(--fg); animation: blink 1s steps(1) infinite; }
.sh-try { color: var(--a); border-bottom: 1px dashed color-mix(in srgb, var(--a) 60%, transparent); cursor: pointer; }
.sh-try:hover { text-decoration: none; border-bottom-style: solid; }
.shell-wrap.focus { border-color: var(--y); box-shadow: 0 0 0 1px var(--y); }
.steps { list-style: none; margin: 0 0 22px; padding: 0; display: grid; gap: 14px; }
.steps li { display: grid; grid-template-columns: 28px minmax(0, 1fr); gap: 12px; }
.sn { width: 28px; height: 28px; display: grid; place-items: center; border: 1px solid var(--b2); color: var(--a); font-weight: 700; font-size: 13px; }
.steps b { font-size: 14px; }
.cp { display: flex; justify-content: space-between; gap: 10px; width: 100%; text-align: left; margin-top: 6px; border: 1px solid var(--b); background: var(--bg2); padding: 8px 10px; font-size: 13px; transition: border-color .2s; }
.cp code { color: var(--fg); min-width: 0; overflow-wrap: anywhere; }
.cp .cpi { color: var(--f); flex: none; font-size: 12px; transition: color .2s; }
.cp:hover { border-color: var(--a); }
.cp:hover .cpi { color: var(--a); }
.cp.ok { border-color: var(--g); }
.cp.ok .cpi { color: var(--g); }

/* ---------------------------------------------------------------- keys */
.keys-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; border: 1px solid var(--b); }
.kg { padding: 20px 20px 16px; border-right: 1px solid var(--b); }
.kg:last-child { border-right: 0; }
.kg.site { background: color-mix(in srgb, var(--y) 4%, transparent); }
.kg h3 { font-size: 13px; text-transform: uppercase; letter-spacing: .08em; margin: 0 0 12px; }
.kg h3:not(:first-child) { margin-top: 20px; }
.kg p, .help-cols p { display: flex; flex-wrap: wrap; align-items: center; gap: 4px; margin: 0 0 9px; font-size: 13.5px; }
.kg p span, .help-cols p span { color: var(--d); margin-left: 8px; flex: 1 1 12ch; min-width: 0; }
.kg kbd { transition: background .15s, color .15s, transform .15s var(--ease), box-shadow .15s; }
.kg kbd.hit { background: var(--y); color: var(--ink); transform: translateY(-2px); box-shadow: 0 4px 14px -4px var(--y); }

/* ---------------------------------------------------------------- faq */
.faq { border: 1px solid var(--b); }
.qa { border-bottom: 1px solid var(--b); }
.qa:last-child { border-bottom: 0; }
.q { width: 100%; text-align: left; padding: 14px 18px; font-size: 15px; color: var(--fg); display: flex; gap: 12px; transition: background .2s; }
.q:hover { background: var(--bg3); }
.q .ar { color: var(--a); display: inline-block; transition: transform .3s var(--ease); }
.qa.open .q .ar { transform: rotate(90deg); }
.qa.open .q { background: var(--sel); box-shadow: inset 2px 0 0 var(--a); }
.a { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .4s var(--ease); }
.a > div { overflow: hidden; }
.a p { margin: 0; padding: 4px 18px 18px calc(18px + 2ch); color: var(--d); font-size: 14.5px; max-width: 90ch; }
.a kbd { font-size: 11px; padding: 2px 5px; min-width: 0; }
.qa.open .a { grid-template-rows: 1fr; }

.site-foot { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px 24px; border-top: 1px solid var(--b); padding-top: 18px; color: var(--f); font-size: 12.5px; }
.site-foot a { color: var(--d); }

/* ---------------------------------------------------------------- status line */
.status {
  position: fixed; z-index: 45; left: calc(var(--edge) + 1px); right: calc(var(--edge) + 1px); bottom: calc(var(--edge) + 1px);
  height: var(--stat); display: flex; align-items: center; gap: 14px; padding: 0 12px 0 0;
  background: var(--bg2); border-top: 1px solid var(--b); font-size: 12.5px; color: var(--d); white-space: nowrap; overflow: hidden;
}
.mode { background: var(--a); color: var(--ink); font-weight: 800; padding: 0 12px; height: 100%; display: flex; align-items: center; letter-spacing: .06em; transition: background .3s; }
.mode.m-demo { background: var(--y); }
.mode.m-shell { background: var(--g); }
.mode.m-search { background: var(--m); }
.hints { flex: 1; overflow: hidden; text-overflow: ellipsis; min-width: 0; }
.hints b { color: var(--fg); font-weight: 400; }
.hints .sp { color: var(--b2); margin: 0 6px; }
.pos { color: var(--f); }
.pos #pos-name { color: var(--d); }

/* ---------------------------------------------------------------- overlays */
.ov { position: fixed; inset: 0; z-index: 80; display: grid; place-items: start center; padding: 14vh 16px 16px; background: color-mix(in srgb, var(--bg) 70%, transparent); backdrop-filter: blur(3px); }
.ov[hidden] { display: none; }
.ov.show { animation: ovin .22s var(--ease); }
.ov.show .pal { animation: palin .32s var(--ease); }
@keyframes ovin { from { opacity: 0; } }
@keyframes palin { from { opacity: 0; transform: translateY(-10px) scale(.98); } }
.pal { position: relative; width: min(680px, 100%); background: var(--bg2); border: 1px solid var(--a); padding: 26px 0 0; box-shadow: 0 40px 120px -40px #000; }
.pal-t { position: absolute; top: 0; left: 50%; transform: translate(-50%, -50%); background: var(--a); color: var(--ink); font-weight: 700; padding: 1px 10px; font-size: 14px; }
.pal-in { display: flex; align-items: center; gap: 8px; padding: 0 18px 12px; border-bottom: 1px solid var(--b); font-size: 15px; }
.pal-in input { flex: 1; min-width: 0; background: transparent; border: 0; outline: none; color: var(--fg); font: inherit; caret-color: var(--y); }
.pal-list { list-style: none; margin: 0; padding: 6px 0; max-height: min(52vh, 420px); overflow-y: auto; }
.pal-list li { display: flex; gap: 12px; align-items: baseline; padding: 6px 18px; cursor: pointer; font-size: 14px; position: relative; }
.pal-list li .k { color: var(--f); font-size: 12px; width: 7ch; flex: none; }
.pal-list li .t { color: var(--fg); flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pal-list li .t mark { background: none; color: var(--y); font-weight: 700; }
.pal-list li .h { color: var(--f); font-size: 12px; }
.pal-list li.on { background: var(--sel); }
.pal-list li.on::before { content: "▌"; position: absolute; left: 2px; color: var(--a); }
.pal-list li.empty { color: var(--f); cursor: default; }
.pal-f { display: flex; gap: 18px; padding: 10px 18px; border-top: 1px solid var(--b); color: var(--f); font-size: 12px; flex-wrap: wrap; }
.pal-f kbd { font-size: 10.5px; padding: 2px 5px; min-width: 0; }
.pal-n { margin-left: auto; }
.helpbox { width: min(720px, 100%); }
.help-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 30px; padding: 6px 22px 12px; }
.help-cols h3 { font-size: 13px; text-transform: uppercase; letter-spacing: .08em; margin: 4px 0 12px; }

.toast {
  position: fixed; z-index: 90; left: 50%; bottom: calc(var(--edge) + var(--stat) + 16px); transform: translate(-50%, 20px);
  background: var(--g); color: var(--ink); font-weight: 700; font-size: 13.5px; padding: 6px 14px; opacity: 0; pointer-events: none;
  transition: opacity .25s, transform .35s var(--ease); white-space: nowrap; max-width: calc(100vw - 40px); overflow: hidden; text-overflow: ellipsis;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast.err { background: var(--r); }

/* ---------------------------------------------------------------- boot */
.boot { position: fixed; inset: 0; z-index: 120; background: var(--bg); display: none; padding: clamp(20px, 6vw, 80px); }
.js .boot.on { display: block; }
.boot-log { margin: 0; font: 14px/1.7 var(--mono); color: var(--d); white-space: pre-wrap; }
.boot.out { animation: bootout .6s var(--ease) forwards; }
@keyframes bootout { to { clip-path: inset(0 0 100% 0); } }
.boot .ok { color: var(--g); }

/* ---------------------------------------------------------------- responsive */
@media (max-width: 1100px) {
  .why-grid, .keys-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .mini:nth-child(2n), .kg:nth-child(2n) { border-right: 0; }
  .mini:nth-child(-n+2), .kg:nth-child(-n+2) { border-bottom: 1px solid var(--b); }
}
@media (max-width: 900px) {
  .hero-grid, .safe-grid, .inst-grid { grid-template-columns: minmax(0, 1fr); }
  .guard { position: static; }
  .lane { grid-template-columns: minmax(0, 1fr); gap: 6px; }
  .track { overflow-x: auto; padding: 4px 2px 8px; scrollbar-width: none; }
  .track::-webkit-scrollbar { display: none; }
  .bar-r .hide-s { display: none; }
}
@media (max-width: 640px) {
  :root { --edge: 6px; --bar: 42px; }
  body { font-size: 14px; }
  .edge-r { display: none; }
  .bar { padding: 0 8px; gap: 10px; }
  .tabs a { padding: 3px 8px; font-size: 13px; }
  .tabs a .tk { display: none; }
  .bar-r { gap: 12px; }
  main { padding-top: 26px; }
  .sec { margin-bottom: 48px; }
  .why-grid, .keys-grid { grid-template-columns: minmax(0, 1fr); }
  .mini, .kg { border-right: 0 !important; border-bottom: 1px solid var(--b); }
  .mini:last-child, .kg:last-child { border-bottom: 0; }
  .help-cols { grid-template-columns: 1fr; }
  .shell { height: 400px; font-size: 12px; }
  .pane-ttl-r { display: none; }
  .status .hints { display: none; }
  .status { justify-content: space-between; }
  td, th { padding: 8px 10px; }
  .qi-l div { grid-template-columns: minmax(0, 1fr); }
  .qi-l dt::after { content: none; }
  .ov { padding-top: 8vh; }
  .demo-pane { padding: 22px 8px 12px; }
  .pane { padding: 26px 14px 20px; }
}

/* ---------------------------------------------------------------- editors inside the shell (nano · vim · less) */
.ed { position: absolute; inset: 0; z-index: 5; display: flex; background: var(--bg2); animation: ed-in .18s var(--ease); }
@keyframes ed-in { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }
.ed-scr { margin: 0; flex: 1; min-width: 0; padding: 10px 12px; font: 13px/1.5 var(--mono); font-variant-ligatures: none; font-feature-settings: "calt" 0, "liga" 0; color: var(--fg); white-space: pre; overflow: hidden; cursor: text; user-select: none; }
.ed-in { position: absolute; left: 0; top: 0; width: 1px; height: 1px; opacity: 0; border: 0; padding: 0; resize: none; pointer-events: none; }
.ed .inv { background: var(--fg); color: var(--ink); }
.ed .inv-r { background: var(--r); color: var(--ink); font-weight: 700; }
.ed .cur { background: var(--y); color: var(--ink); }
.ed .B { font-weight: 800; }
.ed .h-k { color: var(--a); }
.ed .h-s { color: var(--g); }
.ed .h-c { color: var(--f); font-style: italic; }
.ed .h-n { color: var(--m); }
.ed .h-p { color: var(--y); }
.ed .h-t { color: #d98c7a; }
.ed .h-v { color: var(--f); }
.ed .hl { background: var(--m); color: var(--ink); }
.ed .nk { cursor: pointer; }
.ed .nk:hover { background: var(--y); }
.ed-x { display: none; position: absolute; top: 6px; right: 8px; z-index: 2; background: var(--b2); color: var(--fg); border: 1px solid var(--b); font: 12px/1 var(--mono); padding: 6px 9px; }
@media (pointer: coarse) { .ed-x { display: block; } }
.shell-wrap.ed-open::before { content: attr(data-prog); color: var(--y); }
.shell-wrap.ed-open .sh-line { visibility: hidden; }
.mode.m-nano, .mode.m-vim, .mode.m-less { background: var(--m); }
.mode.m-vim { background: var(--g); }
@media (max-width: 640px) { .ed-scr { font-size: 11.5px; padding: 8px; } }