@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap");

:root {
  --at-bg: #f6f1e7;
  --at-surface: #fbf8f0;
  --at-surface-alt: #efe8d8;
  --at-ink: #1f1b14;
  --at-muted: #6b6155;
  --at-faint: #a89c89;
  --at-rule: #d9cfba;
  --at-accent: #00824e;
  --at-accent-ink: #005b37;
  --at-accent-soft: #dbeede;
  --at-warn: #a8550e;
  --at-warn-soft: #f5e3cf;
  --at-sans: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, sans-serif;
  --at-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, monospace;
  --at-s1: 4px;
  --at-s2: 8px;
  --at-s3: 12px;
  --at-s4: 16px;
  --at-s5: 24px;
  --at-s6: 32px;
  --at-s7: 48px;
  --at-s8: 64px;
  --at-r-sm: 3px;
  --at-r: 4px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --at-bg: #161412;
    --at-surface: #1e1b17;
    --at-surface-alt: #25221c;
    --at-ink: #ece5d4;
    --at-muted: #8a8275;
    --at-faint: #5c554a;
    --at-rule: #2e2a23;
    --at-accent: #3fd687;
    --at-accent-ink: #7be0a9;
    --at-accent-soft: #1a2b22;
    --at-warn: #e4a26a;
    --at-warn-soft: #2c2218;
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  background: var(--at-bg);
  color: var(--at-ink);
}

body {
  font-family: var(--at-sans);
  font-size: 17px;
  line-height: 1.65;
  font-feature-settings: "ss01";
}

h1,
h2,
h3,
h4,
h5,
h6,
.gh-head-logo,
.gh-card-title,
.gh-article-title,
.gh-pagehead-title {
  color: var(--at-ink);
  font-family: var(--at-sans);
  font-weight: 600;
  letter-spacing: 0;
}

h1 {
  font-size: 44px;
  line-height: 1.08;
}

h2 {
  margin-top: 2em;
  font-size: 28px;
  line-height: 1.15;
}

h3 {
  margin-top: 1.6em;
  font-size: 21px;
  line-height: 1.2;
}

a {
  color: var(--at-accent-ink);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  background: var(--at-accent-soft);
}

img {
  max-width: 100%;
  height: auto;
}

.gh-site,
.gh-viewport,
.site-main {
  background: var(--at-bg);
}

.site-header,
.site-main,
.site-footer {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
}

.gh-head,
.site-header {
  background: var(--at-surface);
  border-bottom: 1px solid var(--at-rule);
}

.site-header {
  margin-top: var(--at-s5);
  border: 1px solid var(--at-rule);
  border-radius: var(--at-r);
}

.site-header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--at-s5);
  padding: 20px 28px;
  border-bottom: 1px solid var(--at-rule);
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--at-ink);
  text-decoration: none;
}

.site-brand:hover,
.site-title:hover,
.post-card a:hover,
.site-nav a:hover,
.gh-head-menu a:hover,
.nav a:hover {
  background: transparent;
}

.site-brand-mark,
.gh-head-logo::before {
  display: inline-flex;
  width: 22px;
  height: 22px;
  align-items: center;
  justify-content: center;
  border-radius: var(--at-r);
  background: var(--at-ink);
  color: var(--at-bg);
  font-family: var(--at-mono);
  font-size: 11px;
  font-weight: 600;
}

.gh-head-logo::before {
  margin-right: 10px;
  content: "HM";
  vertical-align: middle;
}

.site-title {
  color: var(--at-ink);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.1;
  text-decoration: none;
}

.site-kicker,
.site-description,
.gh-card-excerpt,
.gh-article-excerpt,
.gh-pagehead-description,
.gh-foot,
.gh-foot a {
  color: var(--at-muted);
}

.site-kicker {
  margin-left: 4px;
  font-family: var(--at-mono);
  font-size: 11px;
}

.site-description {
  max-width: 640px;
  margin: var(--at-s3) 0 0;
  font-size: 17px;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--at-s5);
  margin-top: 0;
}

.site-nav a,
.gh-head-menu a,
.nav a {
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  color: var(--at-muted);
  font-family: var(--at-mono);
  font-size: 13px;
  text-decoration: none;
}

.site-nav a:hover,
.gh-head-menu a:hover,
.nav a:hover,
.gh-head-menu a.active,
.nav-current a {
  border-color: var(--at-ink);
  color: var(--at-ink);
}

.site-status-row {
  display: flex;
  justify-content: space-between;
  gap: var(--at-s4);
  padding: 14px 28px;
  color: var(--at-muted);
  font-family: var(--at-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
}

.site-status-row span:first-child::before {
  content: "-> ";
}

.home-launch-state {
  margin: var(--at-s7) 0 var(--at-s5);
  padding: var(--at-s7) 0 var(--at-s6);
  border-bottom: 1px solid var(--at-rule);
}

.home-launch-state h1 {
  max-width: 720px;
  margin: var(--at-s2) 0 0;
  font-size: 72px;
  line-height: 0.98;
}

.post-feed {
  display: grid;
  gap: var(--at-s5);
  padding: var(--at-s6) 0;
}

.post-card,
.gh-card,
.kg-bookmark-card,
.kg-product-card {
  border: 1px solid var(--at-rule);
  border-radius: var(--at-r);
  background: var(--at-surface);
  color: var(--at-ink);
}

.post-card {
  padding: 20px 22px;
}

.post-card a {
  color: inherit;
  text-decoration: none;
}

.post-card h2 {
  margin: var(--at-s2) 0;
  font-size: 26px;
  line-height: 1.12;
}

.post-card p {
  max-width: 720px;
  margin: 0;
  color: var(--at-muted);
}

.post-card-meta {
  display: inline-block;
  margin-top: var(--at-s4);
}

.post-full {
  margin: var(--at-s7) 0;
  padding: var(--at-s7) min(8vw, 80px);
  border: 1px solid var(--at-rule);
  border-radius: var(--at-r);
  background: var(--at-surface);
}

.post-header,
.gh-article-header {
  max-width: 760px;
  margin-bottom: var(--at-s6);
}

.post-header::after,
.gh-article-header::after {
  display: block;
  width: 100%;
  height: 1px;
  margin: 36px 0 0;
  background: var(--at-rule);
  content: "";
}

.post-header h1 {
  margin: 0;
  font-size: clamp(36px, 7vw, 56px);
  line-height: 1.05;
}

.post-content,
.gh-content {
  max-width: 760px;
  font-size: 17px;
}

.post-content p,
.gh-content p,
article p {
  font-size: 17px;
  line-height: 1.65;
}
.post-content .kg-width-wide {
  width: min(1100px, calc(100vw - 48px));
  max-width: none;
  margin-right: auto;
  margin-left: 50%;
  transform: translateX(-50%);
}

.post-content .kg-width-full {
  width: 100vw;
  max-width: none;
  margin-right: 0;
  margin-left: 50%;
  transform: translateX(-50%);
}

.post-content .kg-width-full img,
.post-content .kg-width-full video {
  width: 100%;
}

.post-content p:first-of-type,
.gh-content p:first-of-type,
article > p:first-of-type {
  font-size: 19px;
  font-weight: 500;
}

.post-meta,
.gh-article-meta,
.post-card-meta,
time,
.byline {
  color: var(--at-muted);
  font-family: var(--at-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.eyebrow,
.field-note {
  color: var(--at-accent-ink);
  font-family: var(--at-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

code,
kbd,
samp {
  padding: 1px 6px;
  border-radius: var(--at-r-sm);
  background: var(--at-surface-alt);
  font-family: var(--at-mono);
  font-size: 0.86em;
}

pre {
  overflow-x: auto;
  padding: 20px 22px;
  border: 1px solid var(--at-rule);
  border-radius: var(--at-r);
  background: var(--at-surface);
  font-family: var(--at-mono);
  font-size: 13.5px;
  line-height: 1.7;
}

pre code {
  padding: 0;
  background: transparent;
  font-size: inherit;
}

figure.terminal-frame,
.terminal-frame {
  margin: 1.6em 0;
  padding: 14px;
  border: 1px solid var(--at-rule);
  border-radius: var(--at-r);
  background: var(--at-surface);
}

.terminal-frame pre {
  margin: 0;
  border-color: #2e2a23;
  background: #16140f;
  color: #d8d0bd;
}

blockquote {
  margin: 1.6em 0;
  padding: 4px 0 4px 20px;
  border-left: 2px solid var(--at-rule);
  color: var(--at-muted);
  font-style: normal;
}

hr {
  margin: 2em 0;
  border: 0;
  border-top: 1px solid var(--at-rule);
}

table {
  width: 100%;
  overflow: hidden;
  border: 1px solid var(--at-rule);
  border-collapse: collapse;
  border-radius: var(--at-r);
  background: var(--at-surface);
  font-family: var(--at-mono);
  font-size: 13px;
}

th {
  padding: 12px 18px;
  border-bottom: 1px solid var(--at-rule);
  color: var(--at-muted);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-align: left;
  text-transform: uppercase;
}

td {
  padding: 12px 18px;
  border-top: 1px solid var(--at-rule);
  color: var(--at-muted);
}

td:first-child {
  color: var(--at-ink);
  font-weight: 600;
}

tr:hover td {
  background: var(--at-accent-soft);
}

.kg-callout-card,
.stream-disclosure {
  padding: 16px 20px;
  border-radius: var(--at-r);
  font-family: var(--at-sans);
  font-size: 14.5px;
  line-height: 1.55;
}

.kg-callout-card-grey {
  border: 1px solid var(--at-rule);
  background: var(--at-surface);
  color: var(--at-ink);
}

.kg-callout-card-yellow {
  border: 1px solid #e6c89a;
  background: var(--at-warn-soft);
  color: var(--at-warn);
}

.kg-callout-card-green,
.stream-disclosure-automated {
  border: 1px solid #bcdcc6;
  background: var(--at-accent-soft);
  color: var(--at-accent-ink);
}

.kg-callout-card-pink,
.stream-disclosure-learning {
  border: 1px solid var(--at-rule);
  background: var(--at-surface);
  color: var(--at-muted);
}

.post-card-tags a,
.post-tags a,
.gh-article-tag {
  display: inline-block;
  padding: 4px 10px;
  border: 1px solid var(--at-rule);
  border-radius: 100px;
  color: var(--at-muted);
  font-family: var(--at-mono);
  font-size: 12px;
  text-decoration: none;
}

.post-card-tags a::before,
.gh-article-tag::before {
  margin-right: 1px;
  color: var(--at-faint);
  content: "#";
}

button,
.gh-button,
input[type="submit"] {
  padding: 12px 22px;
  border: 0;
  border-radius: var(--at-r-sm);
  background: var(--at-ink);
  color: var(--at-bg);
  cursor: pointer;
  font-family: var(--at-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
}

input[type="email"],
input[type="text"] {
  padding: 12px 14px;
  border: 1px solid var(--at-rule);
  border-radius: var(--at-r-sm);
  background: var(--at-bg);
  color: var(--at-ink);
  font-family: var(--at-mono);
  font-size: 13px;
}

input:focus {
  outline: 2px solid var(--at-accent);
  outline-offset: -2px;
}

.comparison {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 1.5em 0;
}

.comparison .card {
  padding: 20px 22px;
  border: 1px solid var(--at-rule);
  border-radius: var(--at-r);
  background: var(--at-surface);
}

.comparison .card strong,
.comparison .card h3 {
  display: block;
  margin: 0 0 var(--at-s2);
  font-family: var(--at-mono);
  font-size: 18px;
}

.comparison .card .verdict {
  color: var(--at-accent-ink);
  font-family: var(--at-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.post-afterword {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(260px, 1fr);
  gap: var(--at-s5);
  max-width: 760px;
  margin-top: var(--at-s7);
}

.post-tags-panel,
.post-author-panel,
.site-footer-panel {
  border: 1px solid var(--at-rule);
  border-radius: var(--at-r);
  background: var(--at-surface);
}

.post-tags-panel {
  padding: 20px 24px;
}

.post-tags-panel .field-note {
  margin: 0 0 var(--at-s4);
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.post-author-panel {
  display: flex;
  align-items: center;
  gap: var(--at-s4);
  padding: 20px 24px;
}

.post-author-panel img,
.post-author-mark {
  width: 56px;
  height: 56px;
  flex: 0 0 56px;
  border: 1px solid var(--at-rule);
  border-radius: 50%;
  background: var(--at-surface-alt);
}

.post-author-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--at-muted);
  font-family: var(--at-mono);
  font-size: 14px;
}

.post-author-panel p {
  margin: 0;
  font-weight: 600;
}

.post-author-panel span {
  display: block;
  margin-top: var(--at-s1);
  color: var(--at-muted);
  font-family: var(--at-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.archive-header {
  max-width: 760px;
  margin: var(--at-s7) 0 var(--at-s5);
  padding-bottom: var(--at-s5);
  border-bottom: 1px solid var(--at-rule);
}

.archive-header h1 {
  margin: var(--at-s2) 0;
}

.archive-header p:last-child {
  margin: 0;
  color: var(--at-muted);
}

.site-footer,
.gh-foot {
  padding: var(--at-s5) 0 var(--at-s7);
  border-top: 1px solid var(--at-rule);
  color: var(--at-muted);
  font-family: var(--at-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
}

.site-footer-panel {
  padding: 28px 32px;
}

.site-footer-panel p {
  margin: 0;
}

.site-footer-panel p + p {
  margin-top: var(--at-s3);
}

.site-footer-links {
  font-family: var(--at-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
}

.logged {
  color: var(--at-muted);
  font-family: var(--at-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

/* Temporary launch state: keep membership/newsletter UI hidden until SMTP,
   content pages, and the publishing workflow are ready. */
.gh-navigation-members,
.gh-header .gh-form,
.gh-footer-signup,
.nav-sign-up,
[data-portal="signin"],
[data-portal="signup"],
[data-members-form] {
  display: none !important;
}

@media (max-width: 720px) {
  body {
    font-size: 16px;
  }

  h1,
  .post-header h1 {
    font-size: 36px;
  }

  h2 {
    font-size: 25px;
  }

  .site-header-top,
  .site-status-row,
  .post-afterword {
    display: grid;
    grid-template-columns: 1fr;
  }

  .site-nav {
    gap: var(--at-s3);
  }

  .site-kicker,
  .site-status-row span:last-child {
    display: none;
  }

  .post-full {
    padding: var(--at-s5);
  }

  .comparison {
    grid-template-columns: 1fr;
  }
}