:root {
  --ink: #17211f;
  --muted: #59645f;
  --paper: #f7f5ef;
  --panel: #ffffff;
  --line: #d9ded6;
  --signal: #2f7c67;
  --signal-dark: #164b40;
  --amber: #c98a2e;
  --blue: #254f73;
  --rose: #b7574c;
  --shadow: 0 24px 70px rgba(23, 33, 31, 0.11);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(90deg, rgba(23, 33, 31, 0.055) 1px, transparent 1px) 0 0 / 44px 44px,
    linear-gradient(0deg, rgba(23, 33, 31, 0.04) 1px, transparent 1px) 0 0 / 44px 44px,
    var(--paper);
}

a {
  color: inherit;
}

.site-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border: 1px solid var(--ink);
  border-radius: 50%;
  background: var(--ink);
  color: var(--paper);
  font-family: Georgia, serif;
  font-size: 15px;
}

.brand-name,
.brand-line {
  display: block;
}

.brand-name {
  font-weight: 720;
}

.brand-line {
  color: var(--muted);
  font-size: 13px;
}

.nav {
  display: flex;
  gap: 8px;
}

.nav a {
  border: 1px solid rgba(23, 33, 31, 0.14);
  border-radius: 999px;
  padding: 10px 14px;
  text-decoration: none;
  font-size: 14px;
  background: rgba(255, 255, 255, 0.54);
}

.nav a:hover,
.nav a:focus-visible,
.button:hover,
.button:focus-visible,
.text-link:hover,
.text-link:focus-visible {
  outline: 3px solid rgba(47, 124, 103, 0.22);
  outline-offset: 3px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
  gap: 42px;
  align-items: center;
  min-height: calc(100vh - 112px);
  padding: 26px 0 64px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--signal-dark);
  font-size: 12px;
  font-weight: 760;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  max-width: 850px;
  margin-bottom: 22px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(44px, 7vw, 82px);
  line-height: 0.96;
  font-weight: 520;
}

h2 {
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.05;
}

.lead {
  max-width: 680px;
  color: var(--muted);
  font-size: 20px;
  line-height: 1.65;
}

.search-context {
  max-width: 640px;
  border-left: 3px solid var(--signal);
  padding-left: 16px;
  color: #40504b;
  font-size: 16px;
  line-height: 1.65;
}

.hero-actions,
.pinpoint-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.platform-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 18px;
}

.platform-badges span,
.platform-badges strong {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  border: 1px solid rgba(23, 33, 31, 0.18);
  border-radius: 999px;
  padding: 6px 10px;
  background: rgba(255, 255, 255, 0.66);
  color: var(--signal-dark);
  font-size: 12px;
  font-weight: 780;
  line-height: 1;
  text-transform: uppercase;
}

.platform-badges strong {
  background: var(--ink);
  color: var(--paper);
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 12px 18px;
  text-decoration: none;
  font-weight: 720;
}

.button.primary {
  background: var(--ink);
  color: var(--paper);
}

.button.secondary {
  border: 1px solid rgba(23, 33, 31, 0.22);
  background: rgba(255, 255, 255, 0.64);
}

.control-room {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(23, 33, 31, 0.16);
  border-radius: 8px;
  background:
    radial-gradient(circle at 20% 15%, rgba(47, 124, 103, 0.2), transparent 24%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.82), rgba(236, 241, 234, 0.92));
  box-shadow: var(--shadow);
  padding: 18px;
}

.room-topline {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid rgba(23, 33, 31, 0.14);
  padding-bottom: 14px;
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
}

.signal-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  padding: 22px 0;
}

.cell {
  aspect-ratio: 1;
  border: 1px solid rgba(23, 33, 31, 0.14);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.7);
}

.cell.active {
  background: linear-gradient(135deg, var(--signal), #92c7b9);
}

.cell.hot {
  background: linear-gradient(135deg, var(--amber), #eec987);
}

.trace-stack {
  display: grid;
  gap: 10px;
}

.trace-stack article,
.writing-preview,
.about-strip,
.principles article,
.pinpoint-panel,
.about-panel,
.about-card,
.article-card {
  border: 1px solid rgba(23, 33, 31, 0.14);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.74);
}

.trace-stack article {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 8px 12px;
  padding: 14px;
}

.trace-stack span {
  grid-row: span 2;
  color: var(--rose);
  font-weight: 760;
}

.trace-stack p {
  margin: 0;
  color: var(--muted);
}

.writing-preview,
.about-strip,
.pinpoint-panel {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: center;
  padding: 28px;
  margin-bottom: 24px;
}

.writing-preview p,
.about-strip p,
.pinpoint-panel p {
  max-width: 660px;
  color: var(--muted);
  line-height: 1.65;
}

.text-link {
  color: var(--signal-dark);
  font-weight: 760;
  text-decoration-thickness: 2px;
  text-underline-offset: 5px;
}

.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 24px 0;
}

.principles article {
  min-height: 170px;
  padding: 20px;
}

.principles span,
.article-card span {
  color: var(--blue);
  font-size: 13px;
  font-weight: 780;
  text-transform: uppercase;
}

.principles p,
.article-card p {
  color: var(--muted);
  line-height: 1.6;
}

.writing-layout,
.about-layout,
.article-layout {
  padding: 48px 0 90px;
}

.page-title {
  max-width: 780px;
  margin-bottom: 34px;
}

.article-list {
  display: grid;
  max-width: 780px;
  gap: 16px;
}

.article-card {
  display: block;
  padding: 24px;
  text-decoration: none;
}

.article-card:hover,
.article-card:focus-visible {
  box-shadow: var(--shadow);
  outline: 3px solid rgba(47, 124, 103, 0.18);
}

.about-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 340px);
  gap: 24px;
  padding: clamp(24px, 5vw, 42px);
}

.about-panel p {
  color: #2b3834;
  font-size: 19px;
  line-height: 1.75;
}

.about-card {
  display: grid;
  align-content: start;
  gap: 12px;
  padding: 18px;
}

.about-card span {
  color: var(--blue);
  font-size: 13px;
  font-weight: 780;
  text-transform: uppercase;
}

.article {
  max-width: 840px;
  margin: 0 auto;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
  padding: clamp(28px, 7vw, 72px);
  box-shadow: var(--shadow);
}

.article h1 {
  font-size: clamp(38px, 6vw, 66px);
}

.article p {
  color: #2b3834;
  font-size: 19px;
  line-height: 1.76;
}

.article h2 {
  margin-top: 44px;
  font-size: clamp(28px, 3vw, 38px);
}

.article-intro {
  color: var(--muted);
  font-size: 23px;
}

.article-meta {
  display: grid;
  gap: 6px;
  margin: 0 0 26px;
  color: var(--muted);
  font-size: 14px;
}

.article-note,
.source-list {
  border-left: 3px solid var(--signal);
  padding: 14px 18px;
  background: rgba(47, 124, 103, 0.08);
}

.source-list {
  margin-top: 40px;
}

.source-list h2 {
  margin-top: 0;
  font-size: 28px;
}

.source-list ul {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.7;
}

.article-footer {
  margin-top: 38px;
}

.site-footer {
  padding: 28px 0 42px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

@media (max-width: 860px) {
  .masthead,
  .writing-preview,
  .about-strip,
  .about-panel,
  .pinpoint-panel {
    align-items: flex-start;
    grid-template-columns: 1fr;
  }

  .masthead {
    flex-direction: column;
  }

  .hero,
  .principles {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }
}

@media (max-width: 520px) {
  .site-shell {
    width: min(100% - 22px, 1180px);
  }

  h1 {
    font-size: 40px;
  }

  .lead,
  .article p {
    font-size: 17px;
  }

  .nav,
  .hero-actions,
  .pinpoint-links {
    width: 100%;
  }

  .button,
  .nav a {
    width: 100%;
  }
}