/* ============================================================
   RUNE — docs landing (Markline-framed)
   steel.dev cool near-black × 8-color categorical palette.
   Spectral display · Hanken Grotesk UI · JetBrains Mono data.
   ============================================================ */

:root {
  --bg:          #0f0f0f;
  --bg-2:        #0b0b0b;
  --surface:     #161616;
  --surface-2:   #1d1d1f;
  --surface-3:   #252528;
  --inset:       #0a0a0a;

  --border:        #262628;
  --border-strong: #34343a;
  --border-faint:  #1b1b1d;
  --rail:          #1f1f22;

  --text:    #ededef;
  --text-2:  #b3b3bc;
  --text-3:  #7d7d88;
  --text-4:  #54545d;

  --accent:      #9e8cfc;
  --accent-2:    #b8acff;
  --accent-dim:  rgba(158, 140, 252, 0.14);
  --accent-line: rgba(158, 140, 252, 0.34);

  /* steel.dev 8-color categorical palette */
  --c-green:  #30a46c;
  --c-pink:   #d6409f;
  --c-orange: #f76809;
  --c-tan:    #daa16e;
  --c-purple: #9e8cfc;
  --c-red:    #e5484d;
  --c-yellow: #f6d908;
  --c-cyan:   #67ddfd;

  --green:  #30a46c;
  --cyan:   #67ddfd;
  --amber:  #daa16e;
  --red:    #e5484d;

  --sans:  "Hanken Grotesk", ui-sans-serif, system-ui, sans-serif;
  --serif: "Spectral", Georgia, serif;
  --mono:  "JetBrains Mono", ui-monospace, monospace;

  --maxw: 1180px;
  --pad: 40px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
::selection { background: var(--accent-dim); color: var(--accent-2); }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

::-webkit-scrollbar { width: 11px; height: 11px; }
::-webkit-scrollbar-thumb { background: #34302b; border-radius: 8px; border: 3px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: #423d36; }

/* ---------- ruled page frame (Oxide rails) ---------- */
.page {
  position: relative;
  background:
    radial-gradient(circle at 1px 1px, rgba(255,255,255,0.022) 1px, transparent 0);
  background-size: 26px 26px;
}
.rails {
  max-width: var(--maxw);
  margin: 0 auto;
  border-left: 1px solid var(--rail);
  border-right: 1px solid var(--rail);
}
.section { position: relative; border-bottom: 1px solid var(--border-faint); }
.inner { padding: 0 var(--pad); }

/* section eyebrow / number tag sitting on the rail */
.sec-head {
  display: flex; align-items: baseline; gap: 16px;
  padding: 22px var(--pad) 0;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--text-3);
}
.sec-head .num { color: var(--accent-2); }
.sec-head .ln { flex: 1; height: 1px; background: var(--border-faint); align-self: center; }

.eyebrow {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--text-3); font-weight: 500;
}
.eyebrow .dot { color: var(--accent); }

/* display type */
.display {
  font-family: var(--serif); font-weight: 400; letter-spacing: -0.02em;
  line-height: 1.02; color: var(--text); text-wrap: balance;
}
.display em { font-style: italic; color: var(--accent-2); }
h2.title {
  font-family: var(--serif); font-weight: 400; letter-spacing: -0.018em;
  font-size: clamp(28px, 3.6vw, 44px); line-height: 1.06; margin: 0; color: var(--text);
  text-wrap: balance;
}
h2.title em { font-style: italic; color: var(--accent-2); }
.lede { color: var(--text-2); font-size: 16.5px; line-height: 1.7; max-width: 60ch; text-wrap: pretty; }
.mono { font-family: var(--mono); }

/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 84%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-in {
  max-width: var(--maxw); margin: 0 auto; height: 58px;
  display: flex; align-items: center; gap: 24px; padding: 0 var(--pad);
}
.brand { display: flex; align-items: baseline; gap: 0; font-family: var(--serif); font-size: 23px; letter-spacing: -0.01em; }
.brand .dot { color: var(--accent); font-weight: 600; }
.brand .tag { margin-left: 11px; align-self: center; font-family: var(--mono); font-size: 10px; letter-spacing: .14em; text-transform: uppercase; color: var(--text-3); border: 1px solid var(--border-strong); border-radius: 5px; padding: 2px 6px; }
.nav-links { display: flex; gap: 4px; margin-left: 8px; }
.nav-links a { font-size: 13.5px; color: var(--text-2); padding: 6px 11px; border-radius: 7px; transition: color .14s, background .14s; font-weight: 500; }
.nav-links a:hover { color: var(--text); background: var(--surface-2); }
.nav-right { margin-left: auto; display: flex; align-items: center; gap: 10px; }

.kbtn {
  display: flex; align-items: center; gap: 9px; background: var(--surface); border: 1px solid var(--border);
  border-radius: 8px; padding: 6px 10px 6px 11px; color: var(--text-3); font-size: 13px; cursor: pointer;
  font-family: var(--sans); transition: border-color .14s; min-width: 168px; white-space: nowrap;
}
.kbtn .ktxt { flex: 1; text-align: left; }
.kbtn:hover { border-color: var(--border-strong); }
.kbtn kbd { margin-left: auto; font-family: var(--mono); font-size: 10px; color: var(--text-3); border: 1px solid var(--border-strong); border-radius: 4px; padding: 1px 5px; }

.gh { display: flex; align-items: center; gap: 8px; font-family: var(--mono); font-size: 12.5px; color: var(--text-2); border: 1px solid var(--border); border-radius: 8px; padding: 6px 11px; transition: border-color .14s, color .14s; }
.gh:hover { border-color: var(--border-strong); color: var(--text); }
.gh b { color: var(--text); font-weight: 600; }

/* buttons */
.btn {
  display: inline-flex; align-items: center; gap: 9px; font-family: var(--sans);
  font-size: 14px; font-weight: 600; padding: 9px 17px; border-radius: 9px; cursor: pointer;
  border: 1px solid var(--border-strong); background: var(--surface-2); color: var(--text);
  transition: background .15s, border-color .15s, transform .05s; white-space: nowrap;
}
.btn:hover { background: var(--surface-3); border-color: #46413a; }
.btn:active { transform: translateY(1px); }
.btn.sm { font-size: 13px; padding: 7px 13px; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #18141f; }
.btn.primary:hover { background: var(--accent-2); }
.btn.ghost { background: transparent; border-color: var(--border); color: var(--text-2); }
.btn.ghost:hover { color: var(--text); background: var(--surface-2); }
.btn .arr { transition: transform .18s; }
.btn:hover .arr { transform: translateX(3px); }

/* ============================================================
   HERO
   ============================================================ */
.hero { padding: 64px var(--pad) 60px; position: relative; }
.hero-grid { display: block; }
.hero h1 { font-size: clamp(40px, 5.6vw, 72px); margin: 18px 0 0; }
.hero .lede { margin-top: 22px; }
.hero-cta { display: flex; gap: 12px; margin-top: 30px; flex-wrap: wrap; }

.install {
  margin-top: 26px; display: flex; align-items: center; gap: 0;
  background: var(--inset); border: 1px solid var(--border); border-radius: 10px; overflow: hidden; max-width: 460px;
}
.install code { flex: 1; font-family: var(--mono); font-size: 13px; color: var(--text-2); padding: 12px 15px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.install code .pr { color: var(--accent-2); }
.install .copy { border: none; border-left: 1px solid var(--border); background: var(--surface-2); color: var(--text-3); padding: 0 14px; align-self: stretch; cursor: pointer; display: flex; align-items: center; transition: color .14s, background .14s; }
.install .copy:hover { color: var(--text); background: var(--surface-3); }
.install .copy.done { color: var(--green); }
.hero-meta { margin-top: 13px; font-family: var(--mono); font-size: 11.5px; color: var(--text-4); display: flex; gap: 16px; flex-wrap: wrap; }
.hero-meta span { display: inline-flex; align-items: center; gap: 7px; }
.hero-meta i { width: 5px; height: 5px; border-radius: 50%; background: var(--accent); display: inline-block; }

/* terminal */
.term {
  background: var(--bg-2); border: 1px solid var(--border-strong); border-radius: 12px; overflow: hidden;
  box-shadow: 0 30px 80px -30px rgba(0,0,0,.7), 0 2px 0 0 rgba(255,255,255,.02) inset;
}
.term-bar { display: flex; align-items: center; gap: 8px; padding: 11px 14px; border-bottom: 1px solid var(--border); background: var(--surface); }
.term-bar .dots { display: flex; gap: 6px; }
.term-bar .dots i { width: 11px; height: 11px; border-radius: 50%; background: var(--surface-3); }
.term-bar .ttl { margin-left: 6px; font-family: var(--mono); font-size: 11.5px; color: var(--text-3); }
.term-body { padding: 16px 18px; font-family: var(--mono); font-size: 13px; line-height: 1.75; min-height: 320px; }
.tl { white-space: pre-wrap; word-break: break-word; }
.tl .pr { color: var(--accent-2); }
.tl .cm { color: var(--text); }
.tl .ok { color: var(--green); }
.tl .arrw { color: var(--cyan); }
.tl .dim { color: var(--text-3); }
.tl .warn { color: var(--amber); }
.cursor { display: inline-block; width: 8px; height: 15px; background: var(--accent); vertical-align: -2px; margin-left: 2px; animation: blink 1.05s steps(2) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* ============================================================
   RUNS-ON STRIP
   ============================================================ */
.strip { display: flex; align-items: center; gap: 26px; padding: 20px var(--pad); flex-wrap: wrap; }
.strip .lbl { font-family: var(--mono); font-size: 11px; letter-spacing: .16em; text-transform: uppercase; color: var(--text-4); white-space: nowrap; }
.strip .chips { display: flex; gap: 10px; flex-wrap: wrap; }
.chip { font-family: var(--mono); font-size: 12px; color: var(--text-2); border: 1px solid var(--border); border-radius: 7px; padding: 5px 11px; background: var(--surface); }

/* ============================================================
   PILLARS
   ============================================================ */
.pillars { display: grid; grid-template-columns: repeat(4, 1fr); }
.pillar { padding: 30px 26px 34px; border-left: 1px solid var(--border-faint); }
.pillar:first-child { border-left: none; }
.pillar .pn { font-family: var(--mono); font-size: 11px; color: var(--accent-2); letter-spacing: .1em; }
.pillar h3 { font-family: var(--serif); font-weight: 500; font-size: 21px; margin: 14px 0 9px; letter-spacing: -0.01em; }
.pillar p { color: var(--text-2); font-size: 13.5px; margin: 0; line-height: 1.6; }

/* ============================================================
   SECTION SCAFFOLD
   ============================================================ */
.block { padding: 56px var(--pad) 60px; }
.block-head { max-width: 64ch; margin-bottom: 38px; }
.block-head .title { margin-top: 14px; }
.block-head .lede { margin-top: 16px; }

/* concept grid */
.concepts { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--border-faint); border-left: 1px solid var(--border-faint); }
.concept { border-right: 1px solid var(--border-faint); border-bottom: 1px solid var(--border-faint); padding: 22px 20px 24px; cursor: pointer; transition: background .15s; position: relative; min-height: 168px; display: flex; flex-direction: column; }
.concept:hover { background: var(--surface); }
.concept .c-ico { color: var(--text-3); margin-bottom: 16px; transition: color .15s; }
.concept:hover .c-ico { color: var(--accent-2); }
.concept .c-name { font-family: var(--mono); font-size: 13.5px; font-weight: 600; color: var(--text); }
.concept .c-desc { color: var(--text-3); font-size: 12.5px; margin-top: 7px; line-height: 1.55; }
.concept .c-arr { margin-top: auto; color: var(--text-4); font-family: var(--mono); font-size: 11px; display: flex; align-items: center; gap: 6px; transition: color .15s, gap .15s; }
.concept:hover .c-arr { color: var(--accent-2); gap: 9px; }

/* ============================================================
   CLI SHOWCASE (split + tabs)
   ============================================================ */
.split { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 48px; align-items: start; }
.split.rev { grid-template-columns: 1.15fr 0.85fr; }
.feat-list { display: flex; flex-direction: column; gap: 4px; margin-top: 22px; }
.feat { display: flex; gap: 13px; padding: 11px 0; border-bottom: 1px solid var(--border-faint); }
.feat:last-child { border-bottom: none; }
.feat .fk { font-family: var(--mono); font-size: 12.5px; color: var(--accent-2); flex: none; width: 92px; }
.feat .fv { color: var(--text-2); font-size: 13.5px; }
.feat .fv b { color: var(--text); font-weight: 600; }

.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--border); padding: 0 6px; background: var(--surface); border-radius: 12px 12px 0 0; border: 1px solid var(--border-strong); border-bottom: none; }
.tabs button { font-family: var(--mono); font-size: 12px; font-weight: 500; color: var(--text-3); background: none; border: none; padding: 11px 13px; cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -1px; transition: color .14s; }
.tabs button:hover { color: var(--text-2); }
.tabs button.on { color: var(--text); border-bottom-color: var(--accent); }
.codewell {
  background: var(--bg-2); border: 1px solid var(--border-strong); border-top: none; border-radius: 0 0 12px 12px;
  font-family: var(--mono); font-size: 12.5px; line-height: 1.8; padding: 16px 18px; overflow-x: auto; min-height: 230px;
}
.codewell .pane { display: none; }
.codewell .pane.on { display: block; }
.codewell .cl { white-space: pre; }

/* code token colors */
.t-pr { color: var(--accent-2); }
.t-cmd { color: var(--text); }
.t-flag { color: var(--cyan); }
.t-ok { color: var(--green); }
.t-dim { color: var(--text-3); }
.t-key { color: var(--cyan); }
.t-str { color: var(--green); }
.t-num { color: var(--accent-2); }
.t-warn { color: var(--amber); }
.t-com { color: var(--text-4); }

/* runeset file card */
.filecard { background: var(--bg-2); border: 1px solid var(--border-strong); border-radius: 12px; overflow: hidden; }
.filecard .fc-bar { display: flex; align-items: center; gap: 10px; padding: 10px 15px; border-bottom: 1px solid var(--border); background: var(--surface); font-family: var(--mono); font-size: 12px; color: var(--text-2); }
.filecard .fc-bar .fname { color: var(--text); }
.filecard .fc-bar .badge { margin-left: auto; font-size: 10.5px; color: var(--text-3); border: 1px solid var(--border-strong); border-radius: 5px; padding: 2px 7px; }
.filecard pre { margin: 0; padding: 17px 19px; font-family: var(--mono); font-size: 12.5px; line-height: 1.8; overflow-x: auto; color: var(--text-2); }

/* ============================================================
   DEPLOY-ANYWHERE
   ============================================================ */
.providers { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--border-faint); border-left: 1px solid var(--border-faint); margin-top: 30px; }
.prov { border-right: 1px solid var(--border-faint); border-bottom: 1px solid var(--border-faint); padding: 24px 22px; }
.prov .pv-name { font-family: var(--mono); font-size: 13.5px; color: var(--text); font-weight: 600; }
.prov .pv-mod { font-family: var(--mono); font-size: 11.5px; color: var(--accent-2); margin-top: 8px; }
.prov .pv-sub { color: var(--text-3); font-size: 12px; margin-top: 6px; }

/* ============================================================
   COMPARISON TABLE
   ============================================================ */
.cmp { width: 100%; border-collapse: collapse; margin-top: 26px; font-size: 13.5px; }
.cmp th, .cmp td { text-align: left; padding: 13px 18px; border-bottom: 1px solid var(--border-faint); }
.cmp thead th { font-family: var(--mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--text-3); font-weight: 500; border-bottom: 1px solid var(--border); }
.cmp thead th.rune { color: var(--accent-2); }
.cmp td.cap { color: var(--text-2); }
.cmp td.rune { color: var(--text); font-weight: 500; background: linear-gradient(90deg, var(--accent-dim), transparent); }
.cmp td .yes { color: var(--green); }
.cmp td .no { color: var(--text-4); }
.cmp td .mono { font-family: var(--mono); font-size: 12px; color: var(--text-3); }
.cmp tbody tr:hover td { background: var(--surface); }
.cmp tbody tr:hover td.rune { background: linear-gradient(90deg, var(--accent-dim), var(--surface)); }
.cmp-note { font-family: var(--mono); font-size: 10.5px; color: var(--text-4); margin-top: 14px; }

/* ============================================================
   ARCHITECTURE
   ============================================================ */
.arch { display: grid; grid-template-columns: 1fr; gap: 0; margin-top: 30px; border: 1px solid var(--border); border-radius: 14px; overflow: hidden; background: var(--bg-2); }
.arch-row { display: grid; grid-template-columns: 150px 1fr; border-bottom: 1px solid var(--border-faint); }
.arch-row:last-child { border-bottom: none; }
.arch-side { padding: 20px 22px; border-right: 1px solid var(--border-faint); background: var(--surface); }
.arch-side .as-k { font-family: var(--mono); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--text-3); }
.arch-side .as-v { font-family: var(--mono); font-size: 13px; color: var(--accent-2); margin-top: 6px; }
.arch-main { padding: 18px 22px; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.node { font-family: var(--mono); font-size: 12.5px; padding: 9px 13px; border: 1px solid var(--border-strong); border-radius: 8px; background: var(--surface); color: var(--text-2); }
.node.accent { border-color: var(--accent-line); background: var(--accent-dim); color: var(--accent-2); }
.node.cyan { border-color: rgba(103,221,253,.28); color: var(--cyan); }
.arch-arrow { color: var(--text-4); font-family: var(--mono); }

/* ============================================================
   API THREE-PANE TEASER
   ============================================================ */
.threepane { display: grid; grid-template-columns: 200px 1fr 240px; border: 1px solid var(--border-strong); border-radius: 14px; overflow: hidden; margin-top: 30px; background: var(--bg-2); min-height: 360px; }
.tp-nav { border-right: 1px solid var(--border); padding: 14px 10px; font-size: 12.5px; }
.tp-grp { font-family: var(--mono); font-size: 10px; letter-spacing: .12em; text-transform: uppercase; color: var(--text-4); padding: 12px 10px 6px; }
.tp-ep { display: flex; align-items: center; gap: 8px; padding: 6px 10px; border-radius: 6px; color: var(--text-2); cursor: pointer; transition: background .12s, color .12s; }
.tp-ep:hover { background: var(--surface); color: var(--text); }
.tp-ep.on { background: var(--accent-dim); color: var(--accent-2); }
.verb { font-family: var(--mono); font-size: 9.5px; font-weight: 700; padding: 2px 5px; border-radius: 4px; flex: none; width: 34px; text-align: center; }
.verb.post { background: rgba(92,201,142,.14); color: var(--green); }
.verb.get  { background: rgba(103,221,253,.14); color: var(--cyan); }
.verb.del  { background: rgba(229,132,138,.14); color: var(--red); }
.tp-mid { padding: 20px 22px; border-right: 1px solid var(--border); }
.tp-mid .ep-title { font-family: var(--mono); font-size: 15px; color: var(--text); font-weight: 600; }
.tp-mid .ep-url { font-family: var(--mono); font-size: 12px; color: var(--text-3); margin-top: 8px; word-break: break-all; }
.tp-mid .ep-desc { color: var(--text-2); font-size: 13px; margin: 16px 0; line-height: 1.6; }
.tp-mid .ep-ph { font-family: var(--mono); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; color: var(--text-4); margin: 18px 0 10px; }
.param { display: grid; grid-template-columns: 1fr auto; gap: 4px 12px; padding: 9px 0; border-bottom: 1px solid var(--border-faint); }
.param .pk { font-family: var(--mono); font-size: 12.5px; color: var(--text); }
.param .pk .req { color: var(--red); margin-left: 5px; font-size: 10px; }
.param .pt { font-family: var(--mono); font-size: 11px; color: var(--accent-2); }
.param .pd { grid-column: 1 / -1; color: var(--text-3); font-size: 12px; }
.tp-right { padding: 16px 16px; background: var(--inset); }
.tp-right .rq-bar { display: flex; gap: 6px; margin-bottom: 12px; }
.tp-right .rq-bar span { font-family: var(--mono); font-size: 11px; color: var(--text-3); border: 1px solid var(--border); border-radius: 5px; padding: 3px 8px; cursor: pointer; }
.tp-right .rq-bar span.on { color: var(--accent-2); border-color: var(--accent-line); background: var(--accent-dim); }
.tp-right pre { margin: 0; font-family: var(--mono); font-size: 11.5px; line-height: 1.7; color: var(--text-2); white-space: pre-wrap; word-break: break-word; }
.tp-right .resp { margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--border); }
.tp-right .resp .status { font-family: var(--mono); font-size: 11px; color: var(--green); margin-bottom: 8px; }

/* ============================================================
   COMMUNITY
   ============================================================ */
.community { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--border-faint); border-left: 1px solid var(--border-faint); margin-top: 30px; }
.cstat { border-right: 1px solid var(--border-faint); border-bottom: 1px solid var(--border-faint); padding: 28px 24px; }
.cstat .cv { font-family: var(--serif); font-size: 40px; letter-spacing: -0.02em; color: var(--text); line-height: 1; }
.cstat .ck { font-family: var(--mono); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--text-3); margin-top: 12px; }

/* ============================================================
   CTA
   ============================================================ */
.cta { padding: 90px var(--pad) 96px; text-align: center; position: relative; }
.cta .display { font-size: clamp(38px, 5vw, 64px); }
.cta .install { margin: 32px auto 0; }
.cta .cta-btns { display: flex; gap: 13px; justify-content: center; margin-top: 26px; flex-wrap: wrap; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer { border-top: 1px solid var(--border); }
.footer-in { max-width: var(--maxw); margin: 0 auto; padding: 50px var(--pad) 30px; display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr 1fr; gap: 32px; }
.footer .f-brand .brand { margin-bottom: 14px; }
.footer .f-brand p { color: var(--text-3); font-size: 13px; max-width: 30ch; }
.footer .f-col h4 { font-family: var(--mono); font-size: 10.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--text-4); margin: 0 0 14px; font-weight: 500; }
.footer .f-col a { display: block; color: var(--text-2); font-size: 13px; padding: 4px 0; transition: color .13s; }
.footer .f-col a:hover { color: var(--text); }
.footer-base { max-width: var(--maxw); margin: 0 auto; padding: 18px var(--pad) 40px; border-top: 1px solid var(--border-faint); display: flex; align-items: center; gap: 14px; font-family: var(--mono); font-size: 11.5px; color: var(--text-4); flex-wrap: wrap; }
.footer-base .built { margin-left: auto; }
.footer-base .built a { color: var(--text-3); }
.footer-base .built a:hover { color: var(--accent-2); }

/* ============================================================
   ⌘K PALETTE
   ============================================================ */
.cmdk-scrim { position: fixed; inset: 0; background: rgba(8,7,6,0.6); backdrop-filter: blur(3px); z-index: 100; display: none; }
.cmdk-scrim.open { display: block; animation: fade .15s ease; }
@keyframes fade { from { opacity: 0; } }
.cmdk { position: fixed; top: 14vh; left: 50%; transform: translateX(-50%); width: min(620px, 92vw); z-index: 101; background: var(--surface); border: 1px solid var(--border-strong); border-radius: 14px; box-shadow: 0 40px 90px -20px rgba(0,0,0,.7); overflow: hidden; display: none; }
.cmdk.open { display: block; animation: pop .18s cubic-bezier(.2,.7,.2,1); }
@keyframes pop { from { opacity: 0; transform: translateX(-50%) translateY(-8px); } }
.cmdk-in { display: flex; align-items: center; gap: 12px; padding: 15px 18px; border-bottom: 1px solid var(--border); }
.cmdk-in input { flex: 1; background: none; border: none; outline: none; color: var(--text); font-family: var(--sans); font-size: 15px; }
.cmdk-in .esc { font-family: var(--mono); font-size: 10px; color: var(--text-3); border: 1px solid var(--border-strong); border-radius: 4px; padding: 2px 6px; }
.cmdk-list { max-height: 52vh; overflow-y: auto; padding: 8px; }
.cmdk-grp { font-family: var(--mono); font-size: 10px; letter-spacing: .12em; text-transform: uppercase; color: var(--text-4); padding: 12px 12px 6px; }
.cmdk-item { display: flex; align-items: center; gap: 12px; padding: 9px 12px; border-radius: 8px; cursor: pointer; color: var(--text-2); }
.cmdk-item .ci-ico { color: var(--text-4); flex: none; }
.cmdk-item .ci-name { font-size: 13.5px; color: var(--text); }
.cmdk-item .ci-sub { margin-left: auto; font-family: var(--mono); font-size: 11px; color: var(--text-4); }
.cmdk-item.sel, .cmdk-item:hover { background: var(--accent-dim); }
.cmdk-item.sel .ci-ico, .cmdk-item:hover .ci-ico { color: var(--accent-2); }
.cmdk-empty { padding: 30px; text-align: center; color: var(--text-3); font-size: 13px; }

/* reveal on scroll */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s ease, transform .6s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: none; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1000px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .pillars, .concepts, .providers, .community { grid-template-columns: repeat(2, 1fr); }
  .split, .split.rev { grid-template-columns: 1fr; gap: 32px; }
  .threepane { grid-template-columns: 1fr; }
  .threepane .tp-nav, .threepane .tp-mid { border-right: none; border-bottom: 1px solid var(--border); }
  .footer-in { grid-template-columns: 1fr 1fr; }
  .nav-links { display: none; }
}
@media (max-width: 600px) {
  :root { --pad: 20px; }
  .pillars, .concepts, .providers, .community { grid-template-columns: 1fr; }
  .pillar { border-left: none; border-top: 1px solid var(--border-faint); }
  .pillar:first-child { border-top: none; }
  .kbtn { min-width: 0; }
  .kbtn .ktxt, .gh span.ghl { display: none; }
  .cmp { font-size: 12px; }
  .cmp th, .cmp td { padding: 10px 10px; }
}

/* ============================================================
   STEEL CATEGORICAL ACCENTS
   Purple leads (CTA / links / hero); the rest of the 8-color
   palette is spread across categorical surfaces, steel-style.
   ============================================================ */

/* Concept grid — one palette color per concept icon (8 concepts, 8 colors) */
.concept:nth-child(1) .c-ico { color: var(--c-green); }
.concept:nth-child(2) .c-ico { color: var(--c-cyan); }
.concept:nth-child(3) .c-ico { color: var(--c-tan); }
.concept:nth-child(4) .c-ico { color: var(--c-purple); }
.concept:nth-child(5) .c-ico { color: var(--c-yellow); }
.concept:nth-child(6) .c-ico { color: var(--c-pink); }
.concept:nth-child(7) .c-ico { color: var(--c-orange); }
.concept:nth-child(8) .c-ico { color: var(--c-red); }
/* keep the categorical hue on hover (override the generic accent hover) */
.concept:hover .c-ico { filter: brightness(1.18) saturate(1.1); }

/* Pillars — number markers cycle the palette */
.pillar:nth-child(1) .pn { color: var(--c-green); }
.pillar:nth-child(2) .pn { color: var(--c-cyan); }
.pillar:nth-child(3) .pn { color: var(--c-pink); }
.pillar:nth-child(4) .pn { color: var(--c-orange); }

/* Hero meta dots — green / cyan / pink */
.hero-meta span:nth-child(1) i { background: var(--c-green); }
.hero-meta span:nth-child(2) i { background: var(--c-cyan); }
.hero-meta span:nth-child(3) i { background: var(--c-pink); }

/* Community stat figures — palette per stat */
.cstat:nth-child(1) .cv { color: var(--c-green); }
.cstat:nth-child(2) .cv { color: var(--c-purple); }
.cstat:nth-child(3) .cv { color: var(--c-orange); }
.cstat:nth-child(4) .cv { color: var(--c-cyan); }

/* Architecture control-plane nodes pick up palette variety */
.arch-row:nth-child(1) .node.accent:nth-child(2) { color: var(--c-green); border-color: color-mix(in srgb, var(--c-green) 34%, transparent); background: color-mix(in srgb, var(--c-green) 12%, transparent); }
.arch-row:nth-child(1) .node.accent:nth-child(3) { color: var(--c-yellow); border-color: color-mix(in srgb, var(--c-yellow) 34%, transparent); background: color-mix(in srgb, var(--c-yellow) 12%, transparent); }

/* ============================================================
   HERO AURA
   Warm gradient bloom behind the hero, in the steel palette.
   Drop a real image at /hero-aura.jpg and it layers on top of
   the CSS fallback automatically (cover); blended onto the dark
   canvas via screen + a radial mask so it melts into #0f0f0f.
   ============================================================ */
.hero { overflow: hidden; }
.hero-grid { position: relative; z-index: 1; }
.hero-aura {
  position: absolute; z-index: 0; pointer-events: none;
  left: 0; right: 0; bottom: 0; height: 66%;   /* short bottom strip */
  background:
    url("/hero-aura.jpg") center 250% / cover no-repeat,
    radial-gradient(90% 80% at 50% 100%, rgba(247, 104, 9, 0.42), transparent 62%),
    radial-gradient(60% 70% at 32% 108%, rgba(246, 217, 8, 0.30), transparent 60%),
    radial-gradient(60% 70% at 70% 108%, rgba(214, 64, 159, 0.28), transparent 60%);
  filter: blur(6px) saturate(1.2) contrast(1.03);
  opacity: 0.9;
  mix-blend-mode: screen;
  /* cover shows the warm CENTER band of the image; fade up into the dark */
  -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 52%);
          mask-image: linear-gradient(180deg, transparent 0%, #000 52%);
}
@media (max-width: 1000px) { .hero-aura { height: 58%; opacity: 0.7; } }