:root {
  --ink: #202020;
  --muted: #5b5b56;
  --paper: #ffffff;
  --panel: #f5f5f2;
  --line: #d8d8d2;
  --yellow: #ffc919;
  --disclosure: #fff5cb;
  --focus: #202020;
  color-scheme: light;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, "Avenir Next", "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.6;
  font-weight: 400;
}

a { color: var(--ink); }

a:hover { color: var(--ink); }

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.skip {
  position: absolute;
  left: 1rem;
  top: -4rem;
  background: var(--ink);
  color: white;
  padding: 0.5rem 0.8rem;
  z-index: 5;
}

.skip:focus { top: 1rem; }

.site-bar {
  width: min(1280px, calc(100% - 40px));
  margin: 0 auto;
}

.wrap {
  width: min(1280px, calc(100% - 40px));
  margin: 0 auto;
  padding: 48px 0 64px;
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}

.brand-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 28px;
  min-height: 128px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 20px;
  text-decoration: none;
  color: inherit;
  flex: none;
}

.logo {
  width: 132px;
  height: 99px;
  object-fit: contain;
  display: block;
}

.tagline {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.4;
  width: 112px;
}

.tagline span { display: block; }

.mobile-tagline { display: none; }

.primary-nav, .article-nav { justify-self: center; }

.account-actions { justify-self: end; }

.primary-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 28px;
}

.primary-nav a,
.back-link,
.account-actions .text-action {
  color: var(--ink);
  text-decoration: none;
  font-size: 15px;
  font-weight: 400;
}

.back-link { font-size: 15px; }
.article-nav { display: flex; align-items: center; }
.article-nav .mobile-tagline { display: none; }

.account-actions {
  display: flex;
  align-items: center;
  gap: 24px;
  flex: none;
}

.account-actions form { margin: 0; }

.account-actions .text-action,
.account-actions button.text-action {
  background: transparent;
  border: 0;
  color: var(--ink);
  padding: 0;
  min-height: 0;
  border-radius: 0;
  font-size: 14px;
  font-weight: 400;
  cursor: pointer;
}

.button, button, input[type="submit"] {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  min-height: 48px;
  border: 1px solid var(--yellow);
  background: var(--yellow);
  color: var(--ink);
  border-radius: 6px;
  padding: 14px 20px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
}

.button img { display: block; width: 18px; height: 18px; }

.button.secondary, button.secondary, input[type="submit"].secondary {
  background: var(--paper);
  border-color: var(--ink);
}

.button.teal { background: var(--ink); border-color: var(--ink); color: white; }

h1, h2, h3 {
  font-family: Inter, "Avenir Next", "Segoe UI", sans-serif;
  font-weight: 700;
  letter-spacing: 0;
  line-height: 1.15;
  color: var(--ink);
}

h1 { font-size: 44px; line-height: 1.1; margin: 0 0 16px; }

h2 { font-size: 28px; margin: 0 0 12px; }

h3 { font-size: 22px; margin: 0 0 8px; }

.eyebrow, .kicker {
  display: block;
  margin: 0 0 12px;
  color: var(--muted);
  font-family: "IBM Plex Mono", "Courier New", monospace;
  font-size: 12px;
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: 0;
  text-transform: uppercase;
}

.lede { font-size: 20px; line-height: 1.6; color: var(--muted); max-width: 40rem; }

.actions, .inline-form, .stack { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }

.grid, .stat-grid, .card-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  margin: 32px 0;
}

.card, .stat-grid article, .panel {
  background: var(--panel);
  border: 0;
  border-radius: 12px;
  padding: 32px;
  box-shadow: none;
}

.stat-grid strong { display: block; font-size: 40px; font-weight: 700; line-height: 1.1; }

label { display: block; font-weight: 600; margin-top: 16px; }

input[type="email"], input[type="text"], input[type="password"], input[type="number"], textarea, select {
  width: min(100%, 32rem);
  padding: 12px 14px;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: white;
  font: inherit;
  color: inherit;
}

textarea { min-height: 8rem; }

.flash { padding: 16px 20px; border-radius: 6px; margin: 0 0 16px; }
.flash.notice { background: var(--disclosure); border: 1px solid var(--yellow); }
.flash.alert { background: #fff5cb; border: 1px solid var(--ink); }

.legal-banner, .quote {
  background: var(--disclosure);
  border: 1px solid var(--yellow);
  border-radius: 6px;
  padding: 24px;
  color: var(--ink);
}

table { width: 100%; border-collapse: collapse; overflow: auto; display: block; background: white; border: 1px solid var(--line); border-radius: 12px; }
th, td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
th {
  font-family: "IBM Plex Mono", "Courier New", monospace;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0;
  text-transform: uppercase;
  color: var(--muted);
}

.tag {
  display: inline-block;
  border-radius: 100px;
  padding: 6px 10px;
  background: var(--yellow);
  color: var(--ink);
  font-family: "IBM Plex Mono", "Courier New", monospace;
  font-size: 11px;
  font-weight: 500;
}

.tag.ai { background: var(--disclosure); }
.tag.human { background: var(--panel); }

.site-footer {
  border-top: 1px solid var(--line);
  padding: 40px 0;
  background: var(--paper);
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.footer-signoff {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
  line-height: 1.2;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 24px;
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 14px;
}

.footer-links a { text-decoration: underline; text-underline-offset: 2px; }

.footer-rule {
  height: 1px;
  background: var(--line);
  border: 0;
  margin: 32px 0;
}

.footer-note {
  margin: 0;
  max-width: 850px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}

.admin-bar { background: var(--ink); color: white; }
.admin-bar a { color: white; }
.admin-bar .wrap { display: flex; justify-content: space-between; gap: 1rem; padding: 16px 0; flex-wrap: wrap; }
.admin-bar button.secondary { background: transparent; color: white; border-color: white; }

.message { white-space: pre-wrap; }

.home-intro { padding: 64px 0; }
.home-intro-grid {
  display: flex;
  align-items: center;
  gap: 48px;
}
.home-copy { width: 640px; flex: none; display: flex; flex-direction: column; gap: 24px; }
.home-copy .kicker, .home-copy h1, .home-copy .lede, .home-note { margin: 0; }
.home-copy h1 {
  font-size: 76px;
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -3.5px;
}
.home-copy .lede { font-size: 20px; max-width: none; }
.home-actions { display: flex; gap: 12px; align-items: center; }
.home-note {
  font-family: "IBM Plex Mono", "Courier New", monospace;
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted);
}

.sample-panel {
  flex: 1;
  min-width: 0;
  background: var(--panel);
  border-radius: 12px;
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.sample-head, .panel-id, .step-id, .join-band, .discovery-intro, .footer-nav, .section-split {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.sample-head strong { font-size: 16px; font-weight: 600; }
.sample-badge, .reply-chip {
  display: inline-flex;
  align-items: center;
  border-radius: 100px;
  background: var(--yellow);
  color: var(--ink);
  font-family: "IBM Plex Mono", "Courier New", monospace;
  font-size: 11px;
  font-weight: 500;
  line-height: 1;
  padding: 6px 10px;
  white-space: nowrap;
}
.reply-chip { border-radius: 6px; font-weight: 400; background: var(--panel); }
.reply-chip.hot { background: var(--yellow); }
.sample-mail {
  background: white;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
}
.sample-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--ink);
  color: white;
  padding: 14px 20px;
  font-family: "IBM Plex Mono", "Courier New", monospace;
  font-size: 12px;
}
.sample-body { padding: 24px; display: flex; flex-direction: column; gap: 24px; }
.sample-meta { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.5; }
.sample-meta p { margin: 0 0 6px; }
.sample-meta p:last-child { margin: 0; }
.rule { height: 1px; background: var(--line); border: 0; margin: 0; }
.sample-message {
  margin: 0;
  font-family: "IBM Plex Mono", "Courier New", monospace;
  font-size: 26px;
  font-weight: 500;
  line-height: 1.35;
}
.sample-caption, .mono {
  margin: 0;
  font-family: "IBM Plex Mono", "Courier New", monospace;
  font-size: 11px;
  line-height: 1.5;
  color: var(--muted);
}
.sample-aside { margin: 0; color: var(--muted); font-size: 16px; line-height: 1.5; }

.principle-row, .discovery-cards {
  display: flex;
  gap: 16px;
  align-items: stretch;
}
.principle-row { padding-bottom: 64px; }
.principle, .discovery-card {
  flex: 1;
  min-width: 0;
  border-radius: 12px;
}
.principle { padding: 32px; display: flex; flex-direction: column; gap: 24px; background: var(--panel); }
.principle.ink { background: var(--ink); color: white; }
.principle.ink p { color: white; }
.panel-id img { display: block; }
.panel-kicker {
  margin: 0;
  font-family: "IBM Plex Mono", "Courier New", monospace;
  font-size: 10px;
  color: var(--muted);
}
.principle.ink .panel-kicker { color: white; }
.principle h2 { font-size: 28px; line-height: 1.15; margin: 0 0 12px; }
.principle.ink h2 { color: white; }
.principle p { margin: 0; font-size: 17px; color: var(--muted); }
.principle p + p { margin-top: 12px; }

.turn-section { padding: 16px 0 64px; display: flex; flex-direction: column; gap: 32px; }
.turn-intro h2 { font-size: 44px; line-height: 1.1; margin: 0; max-width: 760px; }
.turn-intro .kicker { margin-bottom: 12px; }
.text-link { font-size: 15px; font-weight: 500; text-decoration: underline; text-underline-offset: 2px; white-space: nowrap; }
.turn-steps { display: flex; gap: 32px; }
.turn-step { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 20px; }
.step-rule { height: 2px; background: var(--ink); border: 0; margin: 0; }
.step-no {
  margin: 0;
  font-family: "IBM Plex Mono", "Courier New", monospace;
  font-size: 14px;
  color: var(--muted);
}
.turn-step h3 { font-size: 24px; margin: 0 0 12px; }
.turn-step p { margin: 0; color: var(--muted); font-size: 17px; }
.limits {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: var(--panel);
  border-radius: 6px;
  padding: 24px;
}
.limits span {
  font-family: "IBM Plex Mono", "Courier New", monospace;
  font-size: 12px;
  color: var(--muted);
}
.limits strong { font-size: 16px; font-weight: 600; line-height: 1.5; }

.disclosure { padding-bottom: 64px; }
.disclosure-panel {
  display: flex;
  gap: 64px;
  background: var(--disclosure);
  border: 1px solid var(--yellow);
  border-radius: 12px;
  padding: 40px;
}
.disclosure-panel h2 { font-size: 40px; line-height: 1.1; margin: 0; width: 344px; flex: none; }
.disclosure-copy { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 24px; }
.disclosure-copy p { margin: 0; font-size: 20px; line-height: 1.6; }

.explore { display: flex; flex-direction: column; gap: 48px; padding-bottom: 64px; }
.discovery-title { width: 440px; flex: none; }
.discovery-title h2 { font-size: 40px; line-height: 1.12; margin: 0; }
.discovery-copy { flex: 1; display: flex; flex-direction: column; gap: 12px; align-items: flex-start; }
.discovery-copy p { margin: 0; color: var(--muted); }
.discovery-card {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 24px;
  background: white;
}
.discovery-card h3 { margin: 0 0 8px; font-size: 22px; }
.discovery-card h3 a { text-decoration: none; }
.discovery-card p { margin: 0; color: var(--muted); font-size: 15px; }
.join-band {
  background: var(--ink);
  color: white;
  border-radius: 12px;
  padding: 40px;
}
.join-band h2 { color: white; font-size: 40px; line-height: 1.1; margin: 0 0 12px; }
.join-band p { margin: 0; font-size: 16px; line-height: 1.5; }

.article-page { padding: 64px 0 80px; }
.article-layout {
  display: flex;
  align-items: flex-start;
  gap: 80px;
}
.contents { width: 240px; flex: none; display: flex; flex-direction: column; gap: 16px; }
.contents ol { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 16px; }
.contents a { display: flex; gap: 12px; text-decoration: none; font-size: 14px; line-height: 1.5; }
.contents a span {
  font-family: "IBM Plex Mono", "Courier New", monospace;
  font-size: 11px;
  color: var(--muted);
  flex: none;
}
.contents-inline { display: none; }
.contents-help { display: flex; flex-direction: column; gap: 12px; padding-top: 20px; border-top: 1px solid var(--line); }
.contents-help p { margin: 0; color: var(--muted); font-size: 14px; }
.article { width: min(720px, 100%); display: flex; flex-direction: column; gap: 32px; }
.article h1 { font-size: 64px; line-height: 1.05; margin: 0; }
.article-intro { display: flex; flex-direction: column; gap: 20px; }
.article-intro p { margin: 0; color: var(--muted); font-size: 17px; line-height: 1.65; }
.draft-notice {
  background: var(--disclosure);
  border: 1px solid var(--yellow);
  border-radius: 6px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.draft-notice p { margin: 0; font-size: 17px; line-height: 1.6; }
.draft-label {
  margin: 0;
  font-family: "IBM Plex Mono", "Courier New", monospace;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.5;
}
.policy-sections { display: flex; flex-direction: column; gap: 32px; }
.policy-section { display: flex; flex-direction: column; gap: 16px; }
.policy-section h2 {
  display: flex;
  gap: 16px;
  align-items: baseline;
  font-size: 26px;
  line-height: 1.2;
  margin: 8px 0 0;
}
.policy-section h2 span {
  font-family: "IBM Plex Mono", "Courier New", monospace;
  font-size: 12px;
  font-weight: 400;
  color: var(--muted);
}
.policy-section p { margin: 0; font-size: 17px; line-height: 1.65; }
.policy-section ul { margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 12px; }
.policy-section li { display: flex; gap: 12px; font-size: 17px; line-height: 1.65; }
.article-end { border-top: 1px solid var(--line); padding-top: 16px; }
.article-end a { font-weight: 600; font-size: 15px; text-decoration: none; }

@media (max-width: 1199px) {
  .brand-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    min-height: 0;
    align-items: center;
    padding: 12px 0 0;
    gap: 16px 20px;
  }
  .contents { display: none; }
  .contents-inline {
    display: flex;
    width: auto;
    background: var(--panel);
    border-radius: 12px;
    padding: 20px;
  }
  .brand { width: auto; }
  .brand .tagline { display: none; }
  .logo { width: 104px; height: 78px; }
  .mobile-tagline {
    display: block;
    width: 100%;
    margin: 16px 0 8px;
    font-size: 14px;
    color: var(--muted);
  }
  .primary-nav {
    order: 3;
    width: 100%;
    gap: 12px 20px;
    padding-bottom: 16px;
  }
  .article-nav {
    order: 3;
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    padding-bottom: 16px;
  }
  .article-nav .mobile-tagline { display: block; }
  .back-link { margin-left: 0; }
  .home-intro { padding: 40px 0; }
  .home-intro-grid, .principle-row, .turn-steps, .disclosure-panel, .discovery-intro, .discovery-cards, .article-layout, .join-band, .footer-nav, .limits, .section-split {
    flex-direction: column;
    align-items: stretch;
  }
  .join-band .button { width: 100%; }
  .home-copy { width: auto; }
  .home-copy h1 { font-size: 48px; letter-spacing: -2px; }
  .home-copy .lede, .disclosure-copy p { font-size: 18px; }
  .home-actions { flex-direction: column; align-items: stretch; }
  .home-actions .button { width: 100%; }
  .sample-panel { padding: 20px; }
  .sample-message { font-size: 22px; }
  .principle-row, .disclosure, .explore { padding-bottom: 48px; }
  .principle, .sample-panel { padding: 24px; }
  .turn-intro h2, .disclosure-panel h2, .discovery-title h2, .join-band h2 { font-size: 32px; width: auto; }
  .principle h2 { font-size: 26px; }
  .discovery-title { width: auto; }
  .article-page { padding: 40px 0 64px; }
  .article h1 { font-size: 48px; }
  .contents { width: auto; }
  .footer-nav { align-items: flex-start; }
  h1 { font-size: 32px; }
}