/*
 * riera.co.uk — Portfolio System
 * Variation A · Neutral — Inter throughout, graphite accent
 * Shared design tokens used across the ecosystem.
 */

:root {
  --accent-h: 220;
  --accent-c: 0.02;
  --accent-l: 28%;

  --paper:   oklch(99% 0.002 250);
  --paper-2: oklch(97% 0.003 250);
  --ink:     oklch(18% 0.01 260);
  --ink-2:   oklch(38% 0.008 260);
  --ink-3:   oklch(58% 0.006 260);
  --line:    oklch(90% 0.006 250);
  --line-2:  oklch(82% 0.008 250);

  --accent:      oklch(var(--accent-l) var(--accent-c) var(--accent-h));
  --accent-2:    oklch(calc(var(--accent-l) - 6%) var(--accent-c) var(--accent-h));
  --accent-wash: oklch(var(--accent-l) var(--accent-c) var(--accent-h) / 0.06);

  --font-display: "Inter", "Helvetica Neue", system-ui, sans-serif;
  --font-body:    "Inter", "Helvetica Neue", system-ui, sans-serif;
  --font-mono:    "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --display-tracking: -0.022em;
  --display-weight: 500;
  --body-tracking: -0.005em;
  --radius: 2px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 15.5px;
  line-height: 1.55;
  letter-spacing: var(--body-tracking);
  color: var(--ink);
  background: var(--paper);
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3, h4, p, ul, ol, figure { margin: 0; }
a { color: inherit; text-decoration: none; }
ul { padding: 0; list-style: none; }
button { font: inherit; }

.mono { font-family: var(--font-mono); }

.label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 40px);
}

/* ─── Top chrome ─── */
.chrome-top {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in oklab, var(--paper) 92%, transparent);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.chrome-top .inner {
  max-width: 1200px; margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 40px);
  height: 54px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.brand .mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 22px; height: 22px;
  border: 1px solid var(--ink);
  border-radius: 2px;
  font-size: 0.64rem;
  font-weight: 600;
  letter-spacing: 0;
}
.brand .sub {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-3);
  font-weight: 400;
}

.chrome-nav { display: flex; gap: 22px; align-items: center; }
.chrome-nav a {
  font-size: 0.84rem;
  color: var(--ink-2);
  transition: color 160ms;
}
.chrome-nav a:hover { color: var(--ink); }

.switch-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px;
  border: 1px solid var(--line-2);
  border-radius: 3px;
  background: transparent;
  color: var(--ink-2);
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 450;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  transition: color 160ms, border-color 160ms, background 160ms;
}
.switch-btn:hover { color: var(--ink); border-color: var(--ink-2); }
.switch-btn .kbd {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--ink-3);
  border-left: 1px solid var(--line-2);
  padding-left: 8px;
  margin-left: 2px;
}

/* ─── Switcher (⌘K site index) ─── */
.switcher {
  position: fixed; inset: 0; z-index: 80;
  background: color-mix(in oklab, var(--paper) 60%, transparent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: none;
  align-items: flex-start; justify-content: center;
  padding-top: 12vh;
}
.switcher.open { display: flex; animation: fade 140ms ease; }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }

.switcher-card {
  width: min(780px, 92vw);
  background: var(--paper);
  border: 1px solid var(--line-2);
  border-radius: 4px;
  overflow: hidden;
  box-shadow: 0 24px 64px -24px oklch(0% 0 0 / 0.18);
}
.switcher-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 18px;
  border-bottom: 1px solid var(--line);
}
.switcher-head .title {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--ink-2);
}
.switcher-head .close {
  background: none; border: none; color: var(--ink-3);
  cursor: pointer;
  font-family: var(--font-mono); font-size: 0.74rem;
}
.switcher-list { padding: 6px 0; max-height: 62vh; overflow: auto; }
.switch-row {
  display: grid;
  grid-template-columns: 40px 1fr auto;
  align-items: center;
  gap: 18px;
  padding: 12px 18px;
  cursor: pointer;
  border-left: 2px solid transparent;
  transition: background 140ms, border-color 140ms;
}
.switch-row:hover, .switch-row.is-focus {
  background: var(--paper-2);
  border-left-color: var(--accent);
}
.switch-row.is-current .row-url { color: var(--ink); font-weight: 500; }
.row-num {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--ink-3);
}
.row-body .row-title {
  font-size: 0.94rem;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: -0.005em;
}
.row-body .row-desc {
  font-size: 0.82rem;
  color: var(--ink-2);
  margin-top: 2px;
}
.row-url {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-2);
  white-space: nowrap;
}

/* ─── Hero ─── */
.hero {
  padding: clamp(70px, 11vh, 130px) 0 clamp(50px, 7vh, 80px);
  border-bottom: 1px solid var(--line);
}
.hero-head {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 40px;
  align-items: baseline;
  padding-bottom: 52px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 52px;
}
.hero-head .label { padding-top: 8px; }
.hero-h1 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4.6vw, 3.6rem);
  line-height: 1.1;
  letter-spacing: var(--display-tracking);
  font-weight: var(--display-weight);
  max-width: 22ch;
  text-wrap: balance;
  color: var(--ink);
}
.hero-meta {
  display: grid;
  grid-template-columns: 200px 1fr 1fr;
  gap: 40px;
}
.hero-meta .deck {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--ink-2);
  max-width: 42ch;
  text-wrap: pretty;
}
.hero-meta .deck strong { color: var(--ink); font-weight: 500; }

.signal-list {
  display: grid; gap: 10px;
  align-content: start;
}
.signal-row {
  display: grid; grid-template-columns: 130px 1fr;
  gap: 20px;
  font-size: 0.88rem;
  color: var(--ink);
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}
.signal-row:last-child { border-bottom: none; }
.signal-row .k {
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 0.76rem;
}

/* ─── Sections ─── */
.section { padding: clamp(56px, 8vh, 96px) 0; }
.section + .section { border-top: 1px solid var(--line); }

.sec-head {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 40px;
  margin-bottom: clamp(28px, 4.5vh, 48px);
  align-items: baseline;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
}
.sec-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  letter-spacing: var(--display-tracking);
  font-weight: var(--display-weight);
  line-height: 1.15;
  max-width: 28ch;
  color: var(--ink);
  text-wrap: balance;
}

/* ─── Directory ─── */
.directory { border-top: 1px solid var(--ink); }
.dir-row {
  display: grid;
  grid-template-columns: 40px 1fr 2fr 110px 28px;
  gap: 24px;
  align-items: baseline;
  padding: 22px 4px;
  border-bottom: 1px solid var(--line);
  position: relative;
  transition: padding 220ms;
}
.dir-row::after {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0;
  width: 0; background: var(--accent);
  transition: width 220ms ease;
}
.dir-row:hover::after { width: 2px; }
.dir-row:hover { padding-left: 14px; }
.dir-row:hover .dir-arrow { transform: translateX(4px); color: var(--ink); }
.dir-num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-3);
}
.dir-url {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  color: var(--ink);
  letter-spacing: -0.01em;
  font-weight: 500;
}
.dir-title-row { display: flex; flex-direction: column; gap: 4px; }
.dir-title {
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.3;
  color: var(--ink);
}
.dir-desc {
  font-size: 0.88rem;
  color: var(--ink-2);
  line-height: 1.5;
  max-width: 52ch;
}
.dir-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.dir-arrow {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--ink-3);
  transition: transform 180ms, color 180ms;
  justify-self: end;
}

/* ─── Prose ─── */
.prose {
  display: grid;
  grid-template-columns: 200px 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.prose-col p {
  font-size: 0.98rem;
  color: var(--ink-2);
  line-height: 1.65;
  margin-bottom: 1em;
  text-wrap: pretty;
  max-width: 52ch;
}
.prose-col p:last-child { margin-bottom: 0; }
.prose-col p strong { color: var(--ink); font-weight: 500; }

/* ─── Practice table ─── */
.practice {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 40px;
  align-items: start;
}
.practice-table { border-top: 1px solid var(--ink); }
.practice-row {
  display: grid;
  grid-template-columns: 80px 1fr 120px 40px;
  gap: 24px;
  padding: 22px 4px;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
  position: relative;
  transition: padding 220ms;
}
.practice-row::after {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0;
  width: 0; background: var(--accent);
  transition: width 220ms;
}
.practice-row:hover::after { width: 2px; }
.practice-row:hover { padding-left: 14px; }
.practice-phase {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-3);
}
.practice-title {
  font-size: 1rem;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: -0.005em;
}
.practice-desc {
  font-size: 0.88rem;
  color: var(--ink-2);
  line-height: 1.5;
  margin-top: 4px;
  max-width: 58ch;
}
.practice-price {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--ink);
  font-weight: 500;
  justify-self: end;
  white-space: nowrap;
}
.practice-price .u { color: var(--ink-3); font-weight: 400; }
.practice-row .practice-arrow {
  font-family: var(--font-mono);
  color: var(--ink-3);
  justify-self: end;
  font-size: 0.9rem;
}

/* ─── Contact ─── */
.contact {
  padding: clamp(56px, 8vh, 96px) 0;
  border-top: 1px solid var(--line);
}
.contact .inner {
  display: grid;
  grid-template-columns: 200px 1fr 1fr;
  gap: 40px;
  align-items: baseline;
}
.contact h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  letter-spacing: var(--display-tracking);
  font-weight: var(--display-weight);
  line-height: 1.15;
  max-width: 18ch;
}
.contact-links {
  display: flex; flex-direction: column;
  border-top: 1px solid var(--line);
}
.contact-link {
  display: grid;
  grid-template-columns: 100px 1fr auto;
  gap: 20px;
  align-items: center;
  padding: 14px 2px;
  border-bottom: 1px solid var(--line);
  transition: color 160ms, padding 220ms, background 160ms;
  position: relative;
}
.contact-link::after {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 0;
  background: var(--accent);
  transition: width 220ms;
}
.contact-link:hover::after { width: 2px; }
.contact-link:hover { padding-left: 14px; }
.contact-link .k {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--ink-3);
}
.contact-link .v {
  font-size: 0.94rem;
  color: var(--ink);
  letter-spacing: -0.005em;
}
.contact-link .a {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-3);
}
.contact-link:hover .a { color: var(--ink); }

/* ─── Stat strip ─── */
.stat-strip {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  margin-top: 44px;
}
.stat-cell {
  padding: 22px 20px 20px;
  border-right: 1px solid var(--line);
}
.stat-cell:last-child { border-right: none; }
.stat-cell .n {
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-weight: var(--display-weight);
  letter-spacing: -0.02em;
  line-height: 1;
  display: block;
  margin-bottom: 8px;
  color: var(--ink);
}
.stat-cell .n .u {
  font-size: 0.56em;
  color: var(--ink-3);
  font-family: var(--font-mono);
  margin-left: 4px;
  font-weight: 400;
}
.stat-cell .l {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--ink-3);
}

/* ─── Panels ─── */
.panel-row {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.panel {
  padding: 26px 28px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.panel:nth-child(2n) { border-right: none; }
.panel:nth-last-child(-n+2) { border-bottom: none; }
.panel h3 {
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: -0.005em;
  margin-bottom: 8px;
  color: var(--ink);
}
.panel p { font-size: 0.92rem; color: var(--ink-2); line-height: 1.6; max-width: 48ch; }
.panel .tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--ink-3);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 12px;
  display: block;
}

/* ─── Timeline ─── */
.tl { border-top: 1px solid var(--ink); }
.tl-row {
  display: grid; grid-template-columns: 160px 1fr; gap: 40px;
  padding: 22px 4px;
  border-bottom: 1px solid var(--line);
}
.tl-date { font-family: var(--font-mono); font-size: 0.82rem; color: var(--ink-2); }
.tl-body h4 {
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: -0.005em;
  margin-bottom: 2px;
  color: var(--ink);
}
.tl-body .org {
  font-size: 0.84rem;
  color: var(--ink-3);
  margin-bottom: 10px;
  font-family: var(--font-mono);
}
.tl-body p { font-size: 0.92rem; color: var(--ink-2); line-height: 1.6; max-width: 62ch; }

/* ─── Terminal ─── */
.terminal {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  overflow: hidden;
}
.terminal .head {
  padding: 10px 16px;
  border-bottom: 1px solid var(--line);
  display: flex; justify-content: space-between; color: var(--ink-3);
  font-size: 0.7rem;
}
.terminal .body { padding: 18px; line-height: 1.75; color: var(--ink-2); }
.terminal .prompt { color: var(--accent); }
.terminal .comment { color: var(--ink-3); }
.terminal .op { color: var(--ink); }

/* ─── kbd-grid ─── */
.kbd-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.kbd-card {
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 22px;
}
.kbd-card:nth-child(3n) { border-right: none; }
.kbd-card:nth-last-child(-n+3) { border-bottom: none; }
.kbd-card code {
  font-family: var(--font-mono); font-size: 0.78rem;
  color: var(--ink);
  display: block; margin-bottom: 10px;
  font-weight: 500;
}
.kbd-card p { font-size: 0.88rem; color: var(--ink-2); line-height: 1.55; }

/* ─── Ingest flow ─── */
.ingest {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 0;
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  margin-top: 10px;
}
.ingest-node {
  padding: 18px 16px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink);
  border-right: 1px solid var(--line);
  position: relative;
}
.ingest-node:last-child { border-right: none; }
.ingest-node::before {
  content: attr(data-idx);
  display: block;
  font-size: 0.68rem; color: var(--ink-3);
  margin-bottom: 8px;
}

/* ─── Sub-site hero ─── */
.sub-hero {
  padding: clamp(60px, 9vh, 110px) 0 clamp(44px, 6vh, 72px);
  border-bottom: 1px solid var(--line);
}
.sub-head-grid {
  display: grid; grid-template-columns: 200px 1fr; gap: 40px;
  padding-bottom: 40px; border-bottom: 1px solid var(--line); margin-bottom: 40px;
  align-items: baseline;
}
.sub-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.2vw, 3.2rem);
  line-height: 1.12;
  letter-spacing: var(--display-tracking);
  font-weight: var(--display-weight);
  max-width: 24ch;
  text-wrap: balance;
  color: var(--ink);
}
.sub-hero .meta-grid {
  display: grid; grid-template-columns: 200px 1fr 1fr; gap: 40px;
  align-items: start;
}
.sub-hero .deck {
  font-size: 1rem;
  color: var(--ink-2);
  max-width: 52ch;
  line-height: 1.62;
  text-wrap: pretty;
}

/* ─── Audit form ─── */
.audit-form-wrapper {
  margin-top: 60px;
  padding-top: 60px;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 40px;
  align-items: start;
}
.audit-form { display: grid; gap: 18px; }
.audit-form .form-intro {
  font-size: 0.92rem;
  color: var(--ink-2);
  margin-bottom: 14px;
  max-width: 54ch;
  line-height: 1.6;
}
.audit-form .form-intro a { color: var(--ink); border-bottom: 1px solid var(--line-2); }
.audit-form .form-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.field { display: grid; gap: 6px; }
.field > span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.field input, .field select, .field textarea {
  font-family: var(--font-body);
  font-size: 0.94rem;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line-2);
  border-radius: 2px;
  padding: 10px 12px;
  transition: border-color 160ms;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.field textarea { min-height: 110px; resize: vertical; line-height: 1.55; }
.field.field--inline {
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 10px;
}
.field.field--inline span {
  text-transform: none;
  font-family: var(--font-body);
  font-size: 0.88rem;
  color: var(--ink-2);
  letter-spacing: -0.005em;
}

.btn-submit {
  justify-self: start;
  padding: 12px 24px;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: -0.005em;
  border: none;
  border-radius: 2px;
  cursor: pointer;
  transition: background 160ms;
}
.btn-submit:hover { background: var(--accent); }
.btn-submit:disabled { opacity: 0.5; cursor: progress; }

.form-status {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 10px 12px;
  border-left: 2px solid var(--line-2);
  color: var(--ink-2);
}
.form-status.is-success { border-left-color: var(--accent); color: var(--ink); }
.form-status.is-error   { border-left-color: oklch(48% 0.14 25); color: var(--ink); }
.form-status:empty { display: none; }

/* ─── Footer ─── */
.chrome-footer {
  border-top: 1px solid var(--line);
  padding: 44px 0 32px;
  background: var(--paper-2);
}
.chrome-footer .inner {
  max-width: 1200px; margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 40px);
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 40px;
}
.foot-brand {
  display: flex; flex-direction: column; gap: 8px;
  font-size: 0.84rem;
  color: var(--ink-2);
}
.foot-brand .line { font-weight: 500; color: var(--ink); }
.foot-brand .stamp {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--ink-3);
  margin-top: 10px;
}

.foot-family-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 14px;
}
.foot-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px 24px;
}
.foot-link {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 6px;
  align-items: baseline;
  padding: 8px 0;
  border-bottom: 1px solid transparent;
  transition: color 160ms, border-color 160ms;
  position: relative;
}
.foot-link:hover { color: var(--ink); border-bottom-color: var(--line-2); }
.foot-link .u {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink);
  letter-spacing: -0.005em;
}
.foot-link .d { font-size: 0.76rem; color: var(--ink-3); }
.foot-link.is-current .u { color: var(--ink); }
.foot-link.is-current::before {
  content: ""; display: inline-block; width: 4px; height: 4px;
  background: var(--accent); border-radius: 50%;
  position: absolute; margin-left: -12px; margin-top: 16px;
}

.foot-bottom {
  grid-column: 1 / -1;
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 24px;
  margin-top: 28px;
  border-top: 1px solid var(--line);
  font-size: 0.78rem;
  color: var(--ink-3);
}
.foot-bottom .mono { color: var(--ink-2); }

/* ─── Responsive ─── */
@media (max-width: 960px) {
  .hero-head,
  .hero-meta,
  .sec-head,
  .prose,
  .practice,
  .contact .inner,
  .chrome-footer .inner,
  .sub-head-grid,
  .sub-hero .meta-grid,
  .audit-form-wrapper {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .dir-row { grid-template-columns: 40px 1fr auto; gap: 16px; }
  .dir-row .dir-url, .dir-row .dir-tag { display: none; }
  .practice-row { grid-template-columns: 1fr auto; gap: 10px; }
  .practice-row .practice-phase, .practice-row .practice-arrow { display: none; }
  .panel-row, .kbd-grid { grid-template-columns: 1fr; }
  .panel, .kbd-card { border-right: none; }
  .stat-strip { grid-template-columns: repeat(2, 1fr); }
  .stat-cell:nth-child(2) { border-right: none; }
  .stat-cell:nth-child(1),
  .stat-cell:nth-child(2) { border-bottom: 1px solid var(--line); }
  .foot-grid { grid-template-columns: repeat(2, 1fr); }
  .chrome-nav { display: none; }
  .ingest { grid-template-columns: 1fr; }
  .ingest-node { border-right: none; border-bottom: 1px solid var(--line); }
  .ingest-node:last-child { border-bottom: none; }
  .tl-row { grid-template-columns: 1fr; gap: 6px; }
  .audit-form .form-row { grid-template-columns: 1fr; }
}

/* ---------- Tool-specific: i2e generator form ---------- */

.tool-panel {
  border: 1px solid var(--line);
  background: var(--paper);
}
.tool-panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 22px;
  border-bottom: 1px solid var(--line);
  background: var(--paper-2);
}
.tool-form {
  padding: 22px;
  display: grid;
  gap: 18px;
}
.tool-field {
  display: grid;
  gap: 6px;
}
.tool-field-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.tool-field-hint {
  color: var(--ink-3);
  text-transform: none;
  letter-spacing: 0;
  font-style: italic;
}
.tool-field-help {
  font-size: 0.82rem;
  color: var(--ink-2);
  line-height: 1.5;
}
.tool-field input[type="text"],
.tool-field input[type="password"],
.tool-field select,
.tool-field textarea {
  font: inherit;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  padding: 10px 12px;
  border: 1px solid var(--line-2);
  background: var(--paper);
  color: var(--ink);
  border-radius: var(--radius);
  transition: border-color 150ms ease, background 150ms ease;
}
.tool-field input[type="file"] {
  font: inherit;
  font-size: 0.85rem;
  padding: 10px 12px;
  border: 1px dashed var(--line-2);
  background: var(--paper-2);
  color: var(--ink-2);
  border-radius: var(--radius);
  cursor: pointer;
}
.tool-field input[type="file"]::file-selector-button {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 6px 12px;
  margin-right: 12px;
  border: 1px solid var(--line-2);
  background: var(--paper);
  color: var(--ink);
  cursor: pointer;
}
.tool-field textarea {
  resize: vertical;
  min-height: 90px;
  line-height: 1.55;
}
.tool-field input:focus,
.tool-field select:focus,
.tool-field textarea:focus {
  outline: none;
  border-color: var(--ink);
  background: var(--paper);
}
.tool-field-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.tool-field-row-2 { grid-template-columns: 1fr 1fr; }
.tool-subgroup {
  display: grid;
  gap: 14px;
  padding: 16px;
  border: 1px solid var(--line);
  background: var(--paper-2);
  border-radius: var(--radius);
}
.upload-state {
  padding: 14px 16px;
  border: 1px solid var(--line);
  background: var(--paper-2);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--ink-2);
}
.upload-state p { margin: 0; }
.upload-state.has-preview {
  border-color: var(--ink);
  color: var(--ink);
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.upload-state.has-preview img {
  max-width: 120px;
  max-height: 90px;
  border: 1px solid var(--line);
  background: var(--paper);
}
.hidden { display: none !important; }
.tool-callout {
  padding: 12px 16px;
  border-left: 2px solid var(--ink);
  background: var(--accent-wash);
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--ink-2);
}
.tool-callout strong { color: var(--ink); font-weight: 500; }
.tool-btn-primary {
  padding: 12px 18px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: var(--radius);
  transition: background 150ms ease, color 150ms ease;
}
.tool-btn-primary:hover { background: var(--paper); color: var(--ink); }
.tool-btn-primary:disabled { opacity: 0.4; cursor: not-allowed; }
.tool-btn-secondary {
  padding: 8px 14px;
  border: 1px solid var(--line-2);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: var(--radius);
}
.tool-btn-secondary:hover { border-color: var(--ink); }
.status-pill {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 10px;
  border: 1px solid var(--line-2);
  color: var(--ink-2);
  border-radius: var(--radius);
}
.status-pill.busy { border-color: var(--ink); color: var(--ink); }
.status-pill.success { border-color: var(--ink); color: var(--ink); background: var(--accent-wash); }
.status-pill.error { border-color: #a33; color: #a33; }
.result-shell {
  padding: 22px;
  min-height: 180px;
}
.result-shell.empty {
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px dashed var(--line-2);
  margin: 22px;
  background: var(--paper-2);
  padding: 40px;
}
.empty-copy {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--ink-3);
  margin: 0;
  text-align: center;
}
.result-shell code,
.result-shell pre {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--ink);
}

@media (max-width: 760px) {
  .tool-field-row,
  .tool-field-row-2 { grid-template-columns: 1fr; }
  .tool-form { padding: 16px; }
}