/* ntug: command-palette-first developer utilities. Single scheme, system fonts, no external resources. */

:root {
  color-scheme: light;
  --paper: #F7F7F5;
  --surface: #FFFFFF;
  --ink: #111111;
  --ink-2: #3F3F3C;
  --muted: #595955;
  --rule: #D0D0CC;
  --edge: #86867F;
  --code: #EDEDEA;
  --blue: #1D4ED8;
  --blue-deep: #1E40AF;
  --blue-wash: #DCE5FB;
  --ok: #0B6B3A;
  --ok-wash: #E1F1E8;
  --warn: #8A4B00;
  --warn-wash: #F6EAD6;
  --bad: #A1260F;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --sans: "Helvetica Neue", Helvetica, Arial, "Liberation Sans", sans-serif;
  --s1: 4px; --s2: 8px; --s3: 12px; --s4: 16px; --s5: 24px; --s6: 32px; --s7: 48px; --s8: 72px; --s9: 112px;
  --wrap: 1160px;
  --gutter: clamp(16px, 4vw, 40px);
  --shadow-1: 0 1px 1px rgba(17, 17, 17, .05), 0 3px 6px -2px rgba(17, 17, 17, .08), 0 14px 32px -14px rgba(17, 17, 17, .22);
  --shadow-2: 0 1px 1px rgba(17, 17, 17, .06), 0 6px 12px -4px rgba(17, 17, 17, .10), 0 28px 60px -20px rgba(17, 17, 17, .35);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
html.pal-lock { overflow: hidden; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 1.0625rem/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
main { flex: 1 0 auto; width: 100%; }
img, svg { max-width: 100%; }
h1, h2, h3, h4 { font-family: var(--sans); font-weight: 700; letter-spacing: -0.035em; line-height: 1.05; margin: 0; color: var(--ink); }
h1 { font-size: clamp(2.5rem, 1.4rem + 5vw, 5rem); letter-spacing: -0.05em; line-height: .95; }
h2 { font-size: clamp(1.6rem, 1.25rem + 1.6vw, 2.5rem); }
h3 { font-size: 1.125rem; letter-spacing: -0.02em; line-height: 1.25; }
p { margin: 0 0 var(--s4); }
a { color: var(--blue); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--blue-deep); text-decoration-thickness: 2px; }
ul, ol { margin: 0 0 var(--s4); padding-left: 1.25rem; }
li { margin-bottom: var(--s2); }
code, kbd, pre, samp { font-family: var(--mono); }
code { background: var(--code); border-radius: 3px; padding: .08em .35em; font-size: .88em; overflow-wrap: anywhere; }
pre { margin: 0; }
hr { border: 0; border-top: 1px solid var(--rule); }
[hidden] { display: none !important; }

:focus-visible { outline: 3px solid var(--blue); outline-offset: 2px; }
::selection { background: var(--blue); color: #fff; }

.sr-only { position: absolute !important; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; border: 0; }
.skip { position: absolute; left: var(--s4); top: -100px; z-index: 300; background: var(--ink); color: var(--paper); padding: 12px 18px; font: 600 .9375rem var(--mono); border-radius: 0 0 8px 8px; text-decoration: none; }
.skip:focus { top: 0; }
.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }

kbd {
  display: inline-block; min-width: 1.9em; padding: .12em .5em .08em; text-align: center;
  font: 600 .78rem/1.5 var(--mono); color: var(--ink); background: var(--surface);
  border: 1px solid var(--edge); border-bottom-width: 3px; border-radius: 5px; white-space: nowrap;
}

/* ------------------------------------------------------------ header / footer */
.site-head { border-bottom: 1px solid var(--rule); }
.head-row { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: var(--s2) var(--s4); min-height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; font: 700 1.375rem/1 var(--sans); letter-spacing: -0.05em; color: var(--ink); text-decoration: none; }
.brand:hover { color: var(--ink); }
.brand-glyph { display: block; flex: none; }
.nav ul { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 0 var(--s1); list-style: none; margin: 0; padding: 0; }
.nav li { margin: 0; }
.nav a { display: inline-flex; align-items: center; min-height: 44px; padding: 0 10px; font: 500 .875rem var(--mono); color: var(--ink); text-decoration: none; border-bottom: 2px solid transparent; }
.nav a:hover { border-bottom-color: var(--edge); color: var(--ink); }
.nav a[aria-current="page"] { border-bottom-color: var(--blue); font-weight: 700; }
.search-btn { display: inline-flex; align-items: center; gap: var(--s2); min-height: 44px; padding: 0 12px; background: var(--surface); color: var(--ink); border: 1px solid var(--edge); border-radius: 8px; font: 500 .875rem var(--mono); cursor: pointer; box-shadow: 0 1px 0 rgba(17,17,17,.08); }
.search-btn:hover { border-color: var(--ink); background: var(--code); }

.site-foot { margin-top: var(--s9); border-top: 1px solid var(--ink); padding: var(--s6) 0 var(--s5); flex: none; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr auto; gap: var(--s5) var(--s6); align-items: start; }
.foot-brand { font: 700 1.5rem/1 var(--sans); letter-spacing: -0.05em; margin: 0 0 var(--s2); }
.foot-line { font: 400 .9375rem/1.5 var(--mono); color: var(--ink-2); max-width: 36ch; margin: 0; }
.site-foot .nav ul { justify-content: flex-start; }
.foot-mail { margin: 0; font: 600 .9375rem var(--mono); }
.foot-mail a { display: inline-flex; align-items: center; min-height: 44px; }
.foot-base { margin-top: var(--s4); padding-top: var(--s4); border-top: 1px solid var(--rule); }
.foot-base p { margin: 0; font: 400 .8125rem/1.5 var(--mono); color: var(--muted); }

/* ------------------------------------------------------------ shared atoms */
.eyebrow { display: inline-flex; align-items: center; gap: 10px; font: 600 .8125rem var(--mono); letter-spacing: .04em; text-transform: uppercase; color: var(--ink-2); margin: 0 0 var(--s4); }
.eyebrow-mark { width: 10px; height: 10px; background: var(--blue); display: inline-block; }
.lede { font-size: clamp(1.0625rem, .95rem + .5vw, 1.3125rem); line-height: 1.55; color: var(--ink-2); max-width: 62ch; }
.sec { padding-top: var(--s8); }
.sec > h2 { margin-bottom: var(--s4); }
.note { font: 400 .875rem/1.5 var(--mono); color: var(--ink-2); }
.empty { font: 400 .875rem/1.5 var(--mono); color: var(--muted); margin: var(--s2) 0; }
.noscript { font: 500 .9375rem/1.5 var(--mono); color: var(--warn); border-left: 3px solid var(--warn); padding-left: var(--s3); }
.fine { font: 400 .8125rem/1.5 var(--mono); color: var(--muted); margin-top: var(--s5); }
ul.plain { list-style: none; padding: 0; }
ul.plain li { padding-left: 1.25rem; position: relative; }
ul.plain li::before { content: "\203A"; position: absolute; left: 0; color: var(--blue); font: 700 1rem var(--mono); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--s2);
  min-height: 44px; padding: 0 18px; font: 600 .875rem var(--mono); letter-spacing: .01em;
  color: var(--paper); background: var(--ink); border: 1px solid var(--ink); border-radius: 8px;
  cursor: pointer; text-decoration: none; transition: background-color .12s, color .12s, border-color .12s;
  box-shadow: 0 1px 0 rgba(255,255,255,.15) inset, 0 1px 2px rgba(17,17,17,.2);
}
.btn:hover { background: var(--blue); border-color: var(--blue); color: #fff; }
.btn:active { transform: translateY(1px); }
.btn-ghost { background: var(--surface); color: var(--ink); border-color: var(--edge); box-shadow: none; }
.btn-ghost:hover { background: var(--code); color: var(--ink); border-color: var(--ink); }
.btn-sm { min-height: 40px; padding: 0 12px; font-size: .8125rem; }
.btn:disabled { background: var(--code); color: var(--muted); border-color: var(--edge); cursor: not-allowed; }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: var(--s3); margin: var(--s4) 0; }

.field { display: grid; gap: 6px; margin-bottom: var(--s4); min-width: 0; }
.field-inline { margin-bottom: 0; }
label, .lbl { font: 600 .8125rem/1.3 var(--mono); letter-spacing: .02em; color: var(--ink-2); }
.lbl { display: block; margin: var(--s4) 0 var(--s2); }
.field > .lbl { margin: 0; }
.in {
  width: 100%; min-height: 44px; padding: 10px 12px; font: 400 .9375rem/1.5 var(--mono); color: var(--ink);
  background: var(--surface); border: 1px solid var(--edge); border-radius: 8px; box-shadow: inset 0 1px 2px rgba(17,17,17,.06);
}
.in:hover { border-color: var(--ink); }
.in-short { max-width: 9rem; }
textarea.in { resize: vertical; min-height: 7rem; white-space: pre-wrap; overflow-wrap: anywhere; }
textarea.in.tall { min-height: 14rem; }
textarea.in[readonly] { background: var(--code); }
select.in { padding-right: 8px; }
::placeholder { color: var(--muted); opacity: 1; }
.in[aria-invalid="true"] { border-color: var(--bad); border-width: 2px; }
input[type="file"].in { padding: 8px 10px; min-height: 48px; }
input[type="search"] { -webkit-appearance: none; appearance: none; }
.field-err { margin: 0; font: 500 .8125rem/1.4 var(--mono); color: var(--bad); min-height: 0; }

.chk { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; font: 500 .875rem var(--mono); color: var(--ink); letter-spacing: 0; cursor: pointer; }
.chk input { width: 20px; height: 20px; margin: 0; accent-color: var(--blue); flex: none; }
.flagset { border: 0; padding: 0; margin: 0 0 var(--s4); display: flex; flex-wrap: wrap; gap: 0 var(--s5); min-width: 0; }
.flagset legend { padding: 0; margin: 0 0 4px; font: 600 .8125rem var(--mono); color: var(--ink-2); float: left; width: 100%; }

.seg { position: relative; border: 0; padding: 0; margin: 0; min-width: 0; }
.seg legend { padding: 0; margin: 0 0 6px; font: 600 .8125rem var(--mono); color: var(--ink-2); }
.seg input { position: absolute; opacity: 0; width: 1px; height: 1px; margin: 0; }
.seg label { display: inline-flex; align-items: center; min-height: 44px; padding: 0 14px; margin: 0 -1px -1px 0; font: 600 .8125rem var(--mono); color: var(--ink); background: var(--surface); border: 1px solid var(--ink); cursor: pointer; letter-spacing: 0; }
.seg label:hover { background: var(--code); }
.seg input:checked + label { background: var(--ink); color: var(--paper); }
.seg input:checked + label::before { content: "\2713\00a0"; }
.seg input:focus-visible + label { outline: 3px solid var(--blue); outline-offset: 2px; position: relative; z-index: 2; }
.seg label:first-of-type { border-radius: 8px 0 0 8px; }
.seg label:last-of-type { border-radius: 0 8px 8px 0; }

.ctl-row { display: flex; flex-wrap: wrap; align-items: flex-end; gap: var(--s4) var(--s5); margin: 0 0 var(--s4); }

.status { display: flex; align-items: flex-start; gap: 10px; font: 500 .875rem/1.5 var(--mono); padding: 6px 0; min-height: 2.25rem; color: var(--muted); overflow-wrap: anywhere; }
.status .glyph { flex: none; width: 1.3em; text-align: center; font-weight: 700; }
.status-ok { color: var(--ok); }
.status-bad { color: var(--bad); }
.status-warn { color: var(--warn); }
.status-idle { color: var(--muted); }

.kv { display: grid; grid-template-columns: minmax(8rem, 11rem) minmax(0, 1fr); gap: 0; margin: var(--s3) 0; border-top: 1px solid var(--rule); }
.kv dt, .kv dd { margin: 0; padding: 10px 0; border-bottom: 1px solid var(--rule); font: 400 .9375rem/1.5 var(--mono); }
.kv dt { font-weight: 600; color: var(--ink-2); font-size: .8125rem; padding-right: var(--s3); }
.kv dd { overflow-wrap: anywhere; display: flex; flex-wrap: wrap; align-items: center; gap: var(--s2); }
.kv dd code { background: transparent; padding: 0; font-size: .9375rem; }

.table-wrap { max-width: 100%; overflow-x: auto; margin: 0 0 var(--s4); }
.tbl { width: 100%; border-collapse: collapse; font-size: .9375rem; line-height: 1.45; }
.tbl th, .tbl td { text-align: left; vertical-align: top; padding: 10px 12px 10px 0; border-top: 1px solid var(--rule); }
.tbl thead th { font: 600 .75rem var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-2); border-top: 0; border-bottom: 2px solid var(--ink); white-space: nowrap; }
.tbl tbody th { font: 600 .875rem var(--mono); white-space: nowrap; }
.tbl code { white-space: nowrap; }
.tbl td code { white-space: normal; }
.tbl kbd { margin: 1px 0; }

.notes { margin-top: var(--s5); border-top: 1px solid var(--rule); padding-top: var(--s2); }
.notes summary { display: flex; align-items: center; gap: 10px; min-height: 44px; font: 600 .8125rem var(--mono); letter-spacing: .02em; color: var(--ink-2); cursor: pointer; list-style: none; }
.notes summary::-webkit-details-marker { display: none; }
.notes summary::before { content: "\25B8"; display: inline-block; width: 1em; color: var(--blue); }
.notes[open] summary::before { content: "\25BE"; }
.notes summary:hover { color: var(--ink); }
.notes-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--s5); padding: var(--s3) 0 var(--s2); }
.notes-grid h3 { font: 700 .75rem var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-2); margin-bottom: var(--s3); }
.notes-grid ul { padding-left: 1.1rem; margin: 0; font-size: .9375rem; line-height: 1.5; }

/* ------------------------------------------------------------ palette */
.palette { max-width: 860px; margin: var(--s7) auto 0; text-align: left; }
.pal-field {
  display: flex; align-items: center; gap: var(--s3); padding: 0 clamp(14px, 3vw, 24px);
  min-height: clamp(66px, 11vw, 100px); background: var(--surface); border: 1px solid var(--ink);
  border-radius: 16px; box-shadow: var(--shadow-1), inset 0 -3px 0 var(--code);
}
.pal-field:focus-within { outline: 3px solid var(--blue); outline-offset: 3px; box-shadow: var(--shadow-2), inset 0 -3px 0 var(--blue); }
.pal-prompt { font: 700 clamp(1.5rem, 1rem + 2.5vw, 2.75rem)/1 var(--mono); color: var(--blue); flex: none; }
.pal-input {
  flex: 1; min-width: 0; border: 0; background: transparent; outline: none; color: var(--ink);
  font: 500 clamp(1.25rem, .9rem + 2.3vw, 2.5rem)/1.2 var(--mono); letter-spacing: -0.03em; padding: 14px 0;
  text-overflow: ellipsis;
}
.pal-input:focus-visible { outline: none; }
.pal-kbd { flex: none; }
.pal-x { flex: none; min-height: 40px; min-width: 52px; padding: 0 10px; background: var(--code); border: 1px solid var(--edge); border-radius: 6px; font: 600 .75rem var(--mono); color: var(--ink); cursor: pointer; }
.pal-x:hover { border-color: var(--ink); }
.pal-list {
  list-style: none; margin: var(--s3) 0 0; padding: 4px 0; position: relative; max-height: min(52vh, 27rem); overflow-y: auto; overscroll-behavior: contain;
  background: var(--surface); border: 1px solid var(--rule); border-radius: 14px; box-shadow: var(--shadow-1);
}
.palette[data-state="idle"] .pal-list, .palette[data-state="idle"] .pal-foot { display: none; }
.pal-list .grp { padding: 12px 18px 4px; font: 700 .6875rem var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin: 0; }
.opt { position: relative; display: grid; grid-template-columns: 4.25rem minmax(0, 1fr) auto; gap: var(--s3); align-items: center; min-height: 56px; padding: 8px 18px; margin: 0; cursor: pointer; border-top: 1px solid transparent; }
.opt:hover { background: var(--code); }
.opt.is-active { background: var(--code); box-shadow: inset 4px 0 0 var(--blue); }
.opt-tag { justify-self: start; font: 600 .6875rem var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-2); border: 1px solid var(--edge); border-radius: 4px; padding: 1px 6px; }
.opt-main { display: grid; min-width: 0; }
.opt-label { font: 600 1rem/1.35 var(--mono); color: var(--ink); overflow-wrap: anywhere; }
.opt-desc { font: 400 .875rem/1.4 var(--sans); color: var(--muted); }
.opt-go { font: 700 1.125rem var(--mono); color: var(--ink); visibility: hidden; }
.opt.is-active .opt-go { visibility: visible; }
.hit { font-weight: 800; text-decoration: underline; text-decoration-color: var(--blue); text-decoration-thickness: 2px; text-underline-offset: 3px; }
.pal-empty { padding: 20px 18px; margin: 0; font: 400 .9375rem/1.5 var(--mono); color: var(--ink-2); }
.pal-foot { display: flex; flex-wrap: wrap; gap: var(--s2) var(--s5); margin: var(--s3) 4px 0; font: 400 .8125rem var(--mono); color: var(--muted); }
.pal-foot span { display: inline-flex; align-items: center; gap: 6px; }

.pal-overlay { position: fixed; inset: 0; z-index: 200; display: flex; justify-content: center; align-items: flex-start; padding: clamp(12px, 11vh, 120px) var(--gutter) var(--gutter); background: rgba(247, 247, 245, .86); -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px); overflow-y: auto; }
.pal-box { width: 100%; max-width: 720px; }
.pal-box .pal-field { min-height: 68px; }
.pal-box .pal-input { font-size: clamp(1.125rem, 1rem + 1vw, 1.5rem); }
.pal-box .pal-prompt { font-size: 1.5rem; }
.pal-box .pal-list { max-height: min(56vh, 30rem); box-shadow: var(--shadow-2); }

/* ------------------------------------------------------------ launcher */
.launch { position: relative; isolation: isolate; text-align: center; padding: clamp(40px, 8vw, 96px) 0 var(--s7); }
.launch::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='56' height='56'%3E%3Cpath d='M28 24v8M24 28h8' stroke='%23D0D0CC' stroke-width='1'/%3E%3C/svg%3E");
  -webkit-mask-image: radial-gradient(ellipse 70% 80% at 50% 38%, #000 10%, transparent 72%);
  mask-image: radial-gradient(ellipse 70% 80% at 50% 38%, #000 10%, transparent 72%);
}
.launch h1 { margin: 0 auto; max-width: 12ch; }
.launch-sub { margin: var(--s5) 0 0; font: 400 .9375rem/1.8 var(--mono); color: var(--ink-2); }
.launch .noscript { max-width: 860px; margin: var(--s4) auto 0; text-align: left; }

.stage-wrap { padding-top: var(--s5); }
.stage { min-height: 8rem; }
.stage-empty { text-align: center; padding: var(--s6) var(--s4); border: 1px dashed var(--edge); border-radius: 16px; }
.stage-art { display: block; margin: 0 auto var(--s4); width: min(320px, 100%); height: auto; }
.art-frame { fill: var(--surface); stroke: var(--ink); stroke-width: 1.5; }
.art-rule { stroke: var(--rule); stroke-width: 1.5; fill: none; }
.art-dot { fill: var(--rule); }
.art-prompt { stroke: var(--blue); stroke-width: 5; fill: none; stroke-linecap: round; stroke-linejoin: round; }
.art-cursor { fill: var(--ink); }
.stage-msg { font: 700 1.25rem/1.2 var(--sans); letter-spacing: -0.02em; margin: 0 0 var(--s2); }
.stage-hint { max-width: 52ch; margin: 0 auto; color: var(--ink-2); font-size: 1rem; }

.panel { background: var(--surface); border: 1px solid var(--rule); border-top: 3px solid var(--ink); border-radius: 4px 4px 16px 16px; box-shadow: var(--shadow-1); scroll-margin-top: var(--s4); }
.panel-head { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: var(--s4); align-items: start; padding: var(--s5) var(--s5) var(--s4); border-bottom: 1px solid var(--rule); }
.panel-num { font: 700 .875rem var(--mono); color: var(--blue); padding-top: 6px; }
.panel-head h2 { font-size: clamp(1.5rem, 1.1rem + 1.6vw, 2.25rem); }
.panel-sub { margin: 6px 0 0; color: var(--ink-2); font-size: .9375rem; }
.panel-body { padding: var(--s5); }

.tool-cols { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 var(--s6); }
.half { min-width: 0; }
.sub { font: 700 .8125rem var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-2); margin-bottom: var(--s4); padding-bottom: var(--s2); border-bottom: 1px solid var(--rule); }

.flow-sec .lede { margin-bottom: var(--s6); }
.flow { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; counter-reset: none; border-top: 2px solid var(--ink); }
.flow li { position: relative; margin: 0; padding: var(--s5) var(--s5) var(--s5) 0; }
.flow li + li { padding-left: var(--s5); border-left: 1px solid var(--rule); }
.flow-n { display: inline-grid; place-items: center; width: 32px; height: 32px; border: 1px solid var(--ink); border-radius: 50%; font: 700 .875rem var(--mono); margin-bottom: var(--s3); }
.flow h3 { margin-bottom: var(--s2); }
.flow p { margin: 0; color: var(--ink-2); font-size: .9375rem; }
.flow-none h3 { text-decoration: line-through; text-decoration-thickness: 2px; text-decoration-color: var(--bad); }
.flow-x { border-style: dashed; color: var(--bad); border-color: var(--bad); }

.seven { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 var(--s7); }
.seven li { display: grid; align-content: start; margin: 0; padding: var(--s3) 0; border-top: 1px solid var(--rule); }
.seven a { display: inline-flex; align-items: baseline; gap: var(--s3); min-height: 44px; align-items: center; color: var(--ink); text-decoration: none; font: 700 1.25rem var(--sans); letter-spacing: -0.03em; }
.seven a:hover { color: var(--blue); text-decoration: underline; text-decoration-thickness: 2px; }
.seven-n { font: 700 .8125rem var(--mono); color: var(--blue); letter-spacing: 0; }
.seven-d { color: var(--ink-2); font-size: .9375rem; padding-left: 2.2rem; }

.why-sec p { max-width: 64ch; }
.why-sec h2 { margin-bottom: var(--s4); }

/* ------------------------------------------------------------ toolbox */
.tb-top { padding: clamp(40px, 7vw, 88px) 0 var(--s6); border-bottom: 1px solid var(--rule); }
.tb-top h1 { font-size: clamp(3rem, 1rem + 9vw, 9rem); letter-spacing: -0.06em; margin-bottom: var(--s5); }
.tb-actions { display: flex; flex-wrap: wrap; align-items: center; gap: var(--s3); margin-top: var(--s5); }
.tb-hint { margin: 0 0 0 var(--s3); font: 400 .875rem var(--mono); color: var(--ink-2); }
.tb-list { padding-top: var(--s5); }
.tb-item { border-top: 2px solid var(--ink); padding: var(--s3) 0 var(--s5); scroll-margin-top: var(--s4); }
.tb-item:first-child { border-top-width: 2px; }
.tb-h { margin: 0; font-size: 1rem; }
.tb-toggle {
  display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: var(--s4); width: 100%; min-height: 64px;
  background: transparent; border: 0; padding: var(--s2) 0; text-align: left; cursor: pointer; color: var(--ink); font: inherit;
}
.tb-num { font: 700 clamp(1.75rem, 1rem + 3vw, 3.25rem)/1 var(--sans); letter-spacing: -0.06em; color: var(--blue); min-width: 1.7em; }
.tb-name { font: 700 clamp(1.5rem, 1.05rem + 2vw, 2.75rem)/1.05 var(--sans); letter-spacing: -0.045em; }
.tb-state { font: 600 .8125rem var(--mono); padding: 8px 14px; border: 1px solid var(--ink); border-radius: 999px; min-width: 5.5rem; text-align: center; background: var(--surface); }
.tb-state::after { content: " +"; }
.is-open .tb-state { background: var(--ink); color: var(--paper); }
.is-open .tb-state::after { content: " \2212"; }
.tb-toggle:hover .tb-name { text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 6px; }
.tb-toggle:focus-visible { outline-offset: 4px; }
.tb-desc { margin: 0 0 var(--s3); padding-left: calc(clamp(1.75rem, 1rem + 3vw, 3.25rem) * 1.7 + var(--s4)); color: var(--ink-2); max-width: 70ch; }
.tb-panel { background: var(--surface); border: 1px solid var(--rule); border-radius: 4px 4px 16px 16px; padding: var(--s5); margin-top: var(--s3); box-shadow: var(--shadow-1); }
.rules { list-style: none; padding: 0; max-width: 72ch; }
.rules li { padding: var(--s3) 0; border-top: 1px solid var(--rule); margin: 0; }

/* ------------------------------------------------------------ individual tools */
.rx-pat { display: flex; align-items: center; gap: 6px; min-height: 52px; padding: 0 12px; background: var(--surface); border: 1px solid var(--edge); border-radius: 8px; box-shadow: inset 0 1px 2px rgba(17,17,17,.06); }
.rx-pat:hover { border-color: var(--ink); }
.rx-pat:focus-within { outline: 3px solid var(--blue); outline-offset: 2px; border-color: var(--ink); }
.rx-pat input { flex: 1; min-width: 0; border: 0; outline: none; background: transparent; color: var(--ink); font: 500 1.0625rem/1.4 var(--mono); padding: 12px 0; }
.rx-slash { font: 700 1.25rem var(--mono); color: var(--blue); }
.rx-flags { font: 700 1rem var(--mono); color: var(--ink); min-width: 1ch; }
.hl { white-space: pre-wrap; overflow-wrap: anywhere; font: 400 .9375rem/1.8 var(--mono); background: var(--code); border-radius: 8px; padding: 12px 14px; min-height: 3.5rem; max-height: 18rem; overflow: auto; }
.hl .empty { margin: 0; white-space: normal; }
mark { color: var(--ink); background: var(--blue-wash); padding: 1px 0; border-radius: 2px; }
mark.m0 { text-decoration: underline; text-decoration-color: var(--blue); text-decoration-thickness: 2px; text-underline-offset: 3px; }
mark.m1 { background: var(--ok-wash); text-decoration: underline dashed; text-decoration-color: var(--ok); text-decoration-thickness: 2px; text-underline-offset: 3px; }
.zw { display: inline-block; width: 3px; height: 1.25em; background: var(--blue); vertical-align: text-bottom; margin: 0 1px; }
.grp-list { list-style: none; margin: 0; padding: 0; }
.grp-list li { margin: 0 0 4px; font-family: var(--mono); font-size: .875rem; }
.gname { display: inline-block; min-width: 2.6rem; font-weight: 700; color: var(--blue); }
.out { white-space: pre-wrap; overflow-wrap: anywhere; font: 400 .9375rem/1.6 var(--mono); background: var(--code); border-radius: 8px; padding: 12px 14px; min-height: 3rem; max-height: 14rem; overflow: auto; margin-top: var(--s2); }
.snip { font: 500 .875rem/1.4 var(--mono); background: var(--code); color: var(--ink); border-left: 4px solid var(--bad); padding: 10px 14px; border-radius: 4px; overflow-x: auto; margin: var(--s2) 0 var(--s3); white-space: pre; }
.hash-out { display: block; font: 600 clamp(.9375rem, .75rem + 1vw, 1.375rem)/1.5 var(--mono); letter-spacing: .01em; background: var(--code); border-left: 4px solid var(--blue); border-radius: 4px 8px 8px 4px; padding: 16px; overflow-wrap: anywhere; word-break: break-all; }
.uu-list { list-style: none; counter-reset: uu; margin: 0 0 var(--s3); padding: 0; border-top: 1px solid var(--rule); }
.uu-list li { counter-increment: uu; display: grid; grid-template-columns: 2.4rem minmax(0, 1fr) auto; align-items: center; gap: var(--s3); margin: 0; padding: 6px 0; border-bottom: 1px solid var(--rule); }
.uu-list li::before { content: counter(uu); font: 600 .75rem var(--mono); color: var(--muted); text-align: right; }
.uu-list code { background: transparent; font-size: clamp(.875rem, .7rem + .8vw, 1.0625rem); padding: 0; overflow-wrap: anywhere; }
.color-row { display: flex; gap: var(--s2); align-items: center; }
.picker { flex: none; width: 52px; height: 48px; padding: 3px; border: 1px solid var(--edge); border-radius: 8px; background: var(--surface); cursor: pointer; }
.ratio { margin: var(--s4) 0 var(--s2); display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.ratio-n { font: 700 clamp(3rem, 2rem + 4vw, 5rem)/1 var(--sans); letter-spacing: -0.06em; }
.ratio-u { font: 500 1rem var(--mono); color: var(--ink-2); }
.suggest { display: flex; flex-wrap: wrap; align-items: center; gap: var(--s3); font: 400 .9375rem/1.5 var(--mono); min-height: 2.5rem; }
.swatch { width: 28px; height: 28px; border: 1px solid var(--ink); border-radius: 6px; flex: none; }
.ok-note { color: var(--ok); font-weight: 600; }
.ct-prev { border: 1px solid var(--edge); border-radius: 12px; padding: var(--s5); margin-bottom: var(--s4); color: var(--ink); background: var(--paper); }
.ct-prev p { margin: 0 0 var(--s3); }
.ct-big { font: 700 1.5rem/1.2 var(--sans); letter-spacing: -0.02em; }
.ct-body { font: 400 1rem/1.5 var(--sans); }
.ct-ui { margin: 0 !important; }
.ct-chip { display: inline-block; padding: 6px 14px; border: 2px solid currentColor; border-radius: 999px; font: 600 .8125rem var(--mono); }
.res-pass { color: var(--ok); font-weight: 700; white-space: nowrap; }
.res-fail { color: var(--bad); font-weight: 700; white-space: nowrap; }

/* ------------------------------------------------------------ cheatsheets */
.cs-top { padding: clamp(40px, 7vw, 80px) 0 var(--s6); }
.cs-top h1 { margin-bottom: var(--s4); }
.cs-layout { display: grid; grid-template-columns: 11rem minmax(0, 1fr); gap: var(--s7); align-items: start; padding-top: var(--s5); border-top: 1px solid var(--ink); }
.toc { position: sticky; top: var(--s4); padding-top: var(--s4); }
.toc-h { font: 700 .6875rem var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin: 0 0 var(--s2); }
.toc ul { list-style: none; padding: 0; margin: 0; border-left: 1px solid var(--rule); }
.toc li { margin: 0; }
.toc a { display: flex; align-items: center; min-height: 44px; padding: 0 var(--s3); font: 500 .875rem var(--mono); color: var(--ink); text-decoration: none; margin-left: -1px; border-left: 3px solid transparent; }
.toc a:hover { background: var(--code); border-left-color: var(--blue); }
.cs-sec { padding: var(--s5) 0 var(--s7); border-bottom: 1px solid var(--rule); max-width: 880px; }
.cs-sec:last-child { border-bottom: 0; }
.cs-sec h2 { display: flex; align-items: center; gap: var(--s3); margin-bottom: var(--s4); scroll-margin-top: var(--s4); }
.cs-sec h2:focus-visible { outline-offset: 6px; }
.cs-n { display: inline-grid; place-items: center; width: 40px; height: 40px; background: var(--ink); color: var(--paper); border-radius: 8px; font: 700 1rem var(--mono); letter-spacing: 0; flex: none; }
.cs-sec h3 { margin: var(--s6) 0 var(--s3); font: 700 .8125rem var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-2); }
.calc { background: var(--surface); border: 1px solid var(--rule); border-top: 3px solid var(--blue); border-radius: 4px 4px 14px 14px; padding: var(--s5); margin-top: var(--s6); box-shadow: var(--shadow-1); }
.calc h3 { margin-top: 0; }
.chmod-grid { display: grid; grid-template-columns: 5.5rem repeat(3, 56px); gap: 6px; align-items: center; margin-bottom: var(--s4); }
.chmod-col, .chmod-row { font: 600 .75rem var(--mono); color: var(--ink-2); text-transform: uppercase; letter-spacing: .06em; }
.chmod-col { text-align: center; }
.chk-box { position: relative; width: 56px; min-height: 48px; justify-content: center; }
.chk-box input { position: absolute; opacity: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.chk-box > span[aria-hidden] { display: grid; place-items: center; width: 56px; height: 48px; border: 2px dashed var(--edge); border-radius: 8px; background: var(--surface); font: 700 1.25rem var(--mono); color: var(--muted); }
.chk-box input:checked ~ span[aria-hidden] { background: var(--ink); border: 2px solid var(--ink); color: var(--paper); }
.chk-box input:focus-visible ~ span[aria-hidden] { outline: 3px solid var(--blue); outline-offset: 2px; }
.http-ctl { display: grid; gap: var(--s3); margin-bottom: var(--s2); }
.fam { display: flex; flex-wrap: wrap; gap: var(--s2); }
.chip { min-height: 44px; padding: 0 14px; font: 600 .8125rem var(--mono); color: var(--ink); background: var(--surface); border: 1px solid var(--edge); border-radius: 999px; cursor: pointer; }
.chip:hover { border-color: var(--ink); background: var(--code); }
.chip[aria-pressed="true"] { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.chip[aria-pressed="true"]::before { content: "\2713\00a0"; }
.http-tbl td:nth-child(3), .http-tbl td:nth-child(4) { min-width: 14rem; }
.runs { font: 400 .9375rem/1.5 var(--mono); margin: 0 0 var(--s3); }

/* ------------------------------------------------------------ privacy (man page) */
.man-top { padding: clamp(40px, 7vw, 80px) 0 var(--s6); }
.man-top h1 { margin-bottom: var(--s4); }
.man { border-top: 2px solid var(--ink); }
.man-sec { display: grid; grid-template-columns: minmax(10rem, 15rem) minmax(0, 1fr); gap: var(--s4) var(--s6); padding: var(--s6) 0; border-bottom: 1px solid var(--rule); }
.man-sec h2 { font: 700 .875rem/1.3 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink); }
.man-body { max-width: 72ch; min-width: 0; }
.man-body > *:last-child { margin-bottom: 0; }
.steps { padding-left: 1.4rem; }
.steps li { padding-left: .4rem; }

.sc-out .kv { grid-template-columns: minmax(8rem, 12rem) minmax(0, 1fr); }
.sc-out dd { display: block; }

/* ------------------------------------------------------------ contact */
.contact-top { padding: clamp(40px, 7vw, 80px) 0 0; }
.contact-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 540px); gap: var(--s8); align-items: start; }
.contact-copy h1 { margin-bottom: var(--s5); }
.contact-copy h2 { font-size: 1.25rem; margin: var(--s6) 0 var(--s3); letter-spacing: -0.03em; }
.big-mail { font: 700 1em var(--sans); letter-spacing: -0.03em; overflow-wrap: anywhere; }
.composer { background: var(--surface); border: 1px solid var(--rule); border-top: 3px solid var(--ink); border-radius: 4px 4px 16px 16px; padding: var(--s5); box-shadow: var(--shadow-2); }
.composer h2 { font-size: 1.5rem; margin-bottom: var(--s2); }
.comp-lede { color: var(--ink-2); font-size: .9375rem; }
.counter { margin: 0; font: 400 .8125rem var(--mono); color: var(--muted); }
.prev-h { margin: var(--s5) 0 var(--s2); font: 700 .75rem var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-2); }
.mail-prev { white-space: pre-wrap; overflow-wrap: anywhere; font: 400 .875rem/1.6 var(--mono); background: var(--code); border-radius: 8px; padding: 12px 14px; max-height: 16rem; overflow: auto; }

/* ------------------------------------------------------------ motion */
@keyframes pop { from { opacity: 0; transform: scale(.97) translateY(8px); } to { opacity: 1; transform: none; } }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes blink { 0%, 49% { opacity: 1; } 50%, 100% { opacity: 0; } }
.panel { animation: pop .22s cubic-bezier(.2, .8, .2, 1) both; }
.pal-overlay:not([hidden]) { animation: fade .14s ease-out both; }
.pal-overlay:not([hidden]) .pal-box { animation: pop .16s cubic-bezier(.2, .8, .2, 1) both; }
.cursor { animation: blink 1.1s steps(1) infinite; }
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

/* ------------------------------------------------------------ responsive */
@media (max-width: 960px) {
  .cs-layout { grid-template-columns: minmax(0, 1fr); gap: var(--s4); }
  .toc { position: static; padding-top: 0; }
  .toc ul { display: flex; flex-wrap: wrap; border-left: 0; gap: var(--s2); }
  .toc a { border: 1px solid var(--edge); border-radius: 999px; margin: 0; padding: 0 var(--s4); }
  .toc a:hover { border-color: var(--ink); }
  .contact-grid { grid-template-columns: minmax(0, 1fr); gap: var(--s7); }
  .flow { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .flow li:nth-child(3) { padding-left: 0; border-left: 0; }
  .flow li:nth-child(n+3) { border-top: 1px solid var(--rule); }
  .notes-grid { grid-template-columns: minmax(0, 1fr); gap: var(--s4); }
  .foot-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .foot-id { grid-column: 1 / -1; }
}
@media (max-width: 860px) {
  .head-row { grid-template-columns: 1fr auto; }
  .head-row .nav { grid-column: 1 / -1; grid-row: 2; margin: 0 -10px; }
  .nav ul { justify-content: flex-start; }
  .tool-cols { grid-template-columns: minmax(0, 1fr); }
  .man-sec { grid-template-columns: minmax(0, 1fr); gap: var(--s3); }
}
@media (max-width: 720px) {
  .seven { grid-template-columns: minmax(0, 1fr); }
  .http-tbl thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
  .http-tbl, .http-tbl tbody, .http-tbl tr, .http-tbl th, .http-tbl td { display: block; width: 100%; }
  .http-tbl tr { padding: var(--s3) 0; border-top: 1px solid var(--ink); }
  .http-tbl th, .http-tbl td { border: 0; padding: 4px 0; }
  .http-tbl td::before { content: attr(data-label); display: block; font: 700 .6875rem var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
  .http-tbl td:nth-child(3), .http-tbl td:nth-child(4) { min-width: 0; }
  .http-tbl tbody th { font-size: 1.125rem; }
}
@media (max-width: 720px) {
  .stack thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
  .stack, .stack tbody, .stack tr, .stack th, .stack td { display: block; width: 100%; }
  .stack tr { padding: var(--s3) 0; border-top: 1px solid var(--ink); }
  .stack th, .stack td { border: 0; padding: 4px 0; white-space: normal; }
  .stack td::before { content: attr(data-label); display: block; font: 700 .6875rem var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
}
@media (max-width: 600px) {
  .panel-head { grid-template-columns: minmax(0, 1fr) auto; padding: var(--s4); }
  .panel-num { grid-column: 1 / -1; padding: 0; }
  .panel-body, .tb-panel, .calc, .composer { padding: var(--s4); }
  .kv { grid-template-columns: minmax(0, 1fr); }
  .kv dt { border-bottom: 0; padding-bottom: 0; }
  .pal-kbd { display: none; }
  .opt { grid-template-columns: minmax(0, 1fr) auto; }
  .opt-tag { display: none; }
  .tb-toggle { grid-template-columns: auto minmax(0, 1fr); }
  .tb-state { grid-column: 1 / -1; justify-self: start; }
  .tb-desc { padding-left: 0; }
  .flow { grid-template-columns: minmax(0, 1fr); }
  .flow li, .flow li + li { padding: var(--s4) 0; border-left: 0; border-top: 1px solid var(--rule); }
  .flow li:first-child { border-top: 0; }
  .foot-grid { grid-template-columns: minmax(0, 1fr); }
  .search-btn span { display: none; }
  .uu-list li { grid-template-columns: 1.8rem minmax(0, 1fr); }
  .uu-list .btn { grid-column: 2; justify-self: start; }
  .chmod-grid { grid-template-columns: 4.5rem repeat(3, 56px); }
  .tb-actions .tb-hint { margin-left: 0; flex-basis: 100%; }
}

/* ------------------------------------------------------------ reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    animation-duration: 0s !important;
    animation-iteration-count: 1 !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
  .cursor { opacity: 1; }
  .btn:active { transform: none; }
}

/* ------------------------------------------------------------ print */
@media print {
  :root { --paper: #fff; }
  body { background: #fff; color: #000; font-size: 10.5pt; display: block; }
  .skip, .site-head, .site-foot .nav, .pal-overlay, .no-print, .toc, .tb-actions, .search-btn { display: none !important; }
  .site-foot { margin-top: 24pt; border-top: 1px solid #000; }
  a { color: #000; text-decoration: none; }
  .cs-layout { display: block; border-top: 0; }
  .cs-sec { max-width: none; border-bottom: 0; padding-bottom: 12pt; break-inside: auto; }
  .cs-sec h2 { break-after: avoid; }
  .cs-sec h3 { break-after: avoid; }
  .tbl tr { break-inside: avoid; }
  .table-wrap { overflow: visible; }
  h1 { font-size: 28pt; }
  .calc { box-shadow: none; }
}