:root {
  --color-surface: #f8f8f8;
  --color-surface-alt: #eeeeee;
  --color-surface-deep: #e0e0df;
  --color-ink: #2e312a;
  --color-ink-soft: #5a5f53;
  --color-ink-muted: #767c6f;
  --color-line: #d4d4d3;
  --color-primary: #578127;
  --color-primary-ink: #ffffff;
  --color-primary-soft: #e1e7db;
  --color-accent: #7014eb;
  --color-accent-ink: #ffffff;
  --color-highlight: #e0cff6;
  --color-focus: #6e07f8;
  --color-contrast-surface: #202718;
  --color-contrast-ink: #e6e7e4;
  --color-contrast-line: #4c5145;
  --color-contrast-accent: #a972f3;
  --overlay-scrim: linear-gradient(180deg, rgba(32, 39, 24, 0.35) 0%, rgba(32, 39, 24, 0.72) 55%, rgba(32, 39, 24, 0.92) 100%);
  --font-heading: "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --text-xs: 11.0px;
  --text-sm: 14.7px;
  --text-base: 17px;
  --text-lg: 22.7px;
  --text-xl: 30.2px;
  --text-2xl: 40.3px;
  --text-3xl: 53.7px;
  --text-4xl: 71.5px;
  --text-display: clamp(43px, 8.9vw, 114px);
  --text-figure: clamp(36px, 6.4vw, 82px);
  --weight-heading: 663;
  --weight-body: 400;
  --leading-body: 1.69;
  --leading-heading: 1.18;
  --tracking-heading: 0.001em;
  --radius-sm: 0px;
  --radius-md: 2px;
  --radius-lg: 4px;
  --radius-pill: 4px;
  --border-thin: 1px;
  --border-thick: 1px;
  --shadow-1: none;
  --shadow-2: none;
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-6: 48px;
  --space-8: 64px;
  --container: 1240px;
  --measure: 71ch;
  --gutter: 32px;
  --section-y: 77px;
  --section-y-lg: 108px;
}

/* ============ reset ============ */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 128px;
}

body {
  margin: 0;
  background: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-body);
  line-height: var(--leading-body);
  text-rendering: optimizeLegibility;
}

img, svg, video, canvas, picture { display: block; max-width: 100%; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd { margin: 0; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
strong, b { font-weight: 600; }
::selection { background: var(--color-highlight); color: var(--color-ink); }

:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

/* ============ typography ============ */
h1, h2, h3, h4, h5, h6,
.h1, .h2, .h3, .h4 {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  text-wrap: balance;
}

h1, .h1 { font-size: var(--text-4xl); }
h2, .h2 { font-size: var(--text-3xl); }
h3, .h3 { font-size: var(--text-2xl); }
h4, .h4 { font-size: var(--text-xl); }

.display {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-display);
  line-height: 0.9;
  letter-spacing: -0.03em;
}

.figure-num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: var(--weight-body);
  line-height: 0.92;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--color-accent);
}

.lead {
  max-width: var(--measure);
  font-size: var(--text-lg);
  line-height: 1.45;
  color: var(--color-ink-soft);
}

.label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

.eyebrow {
  display: block;
  font-size: var(--text-xs);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-primary);
  padding-bottom: var(--space-1);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.mono, .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.rule {
  height: var(--border-thin);
  border: 0;
  margin: var(--space-6) 0;
  background: var(--color-line);
}

.divider {
  height: var(--border-thin);
  background: var(--color-line);
  width: 100%;
}

/* ============ layout ============ */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.container--narrow { max-width: 840px; }

.measure { max-width: var(--measure); }

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gutter);
}

.prose { max-width: var(--measure); }
.prose p { margin-bottom: var(--space-3); }
.prose h2 { margin: var(--space-8) 0 var(--space-3); }
.prose h3 { margin: var(--space-6) 0 var(--space-2); }
.prose ul, .prose ol { margin: 0 0 var(--space-3); }
.prose li {
  position: relative;
  padding-left: var(--space-3);
  margin-bottom: var(--space-1);
}
.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 8px;
  height: var(--border-thin);
  background: var(--color-primary);
}

.sticky-panel { position: sticky; top: 136px; align-self: start; }

/* ============ sections ============ */
.section { padding-block: var(--section-y); }
.section--lg { padding-block: var(--section-y-lg); }
.section--tight { padding-block: var(--space-6); }
.section--alt { background: var(--color-surface-alt); }
.section--scale { background: var(--color-surface-deep); }
.section--green { background: var(--color-primary-soft); }

.section--deep {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}
.section--deep .lead { color: color-mix(in srgb, var(--color-contrast-ink) 74%, transparent); }
.section--deep .label { color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent); }
.section--deep .rule,
.section--deep .divider { background: var(--color-contrast-line); }
.section--deep a:hover { color: var(--color-contrast-accent); }

/* ============ split system ============ */
.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  border-top: var(--border-thin) solid var(--color-line);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.split__panel {
  min-width: 0;
  padding: var(--space-4) var(--space-3);
}

@media (min-width: 960px) {
  .split--7-5 { grid-template-columns: 7fr 5fr; }
  .split--5-7 { grid-template-columns: 5fr 7fr; }
  .split--8-4 { grid-template-columns: 8fr 4fr; }
  .split--4-8 { grid-template-columns: 4fr 8fr; }
  .split__panel { padding: var(--space-6) var(--space-6); }
  .split__panel + .split__panel { border-left: var(--border-thin) solid var(--color-line); }
}

.panel--light { background: var(--color-surface); color: var(--color-ink); }
.panel--alt { background: var(--color-surface-alt); color: var(--color-ink); }
.panel--green { background: var(--color-primary-soft); color: var(--color-ink); }

.panel--dark {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-color: var(--color-contrast-line);
}
.panel--dark .label { color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent); }
.panel--dark .lead { color: color-mix(in srgb, var(--color-contrast-ink) 76%, transparent); }
.panel--dark .divider { background: var(--color-contrast-line); }
.panel--dark a:hover { color: var(--color-contrast-accent); }

.panel--airy { padding-block: var(--space-8); }
.panel--airy h2 { font-size: var(--text-3xl); }

.panel--dense {
  font-size: var(--text-sm);
  line-height: 1.6;
  padding-block: var(--space-4);
}
.panel--dense h3, .panel--dense h4 { font-size: var(--text-xl); }
.panel--dense .lead { font-size: var(--text-base); }

/* ============ buttons / links / tags ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  padding: 11px 20px;
  border: var(--border-thin) solid var(--color-ink);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  line-height: 1;
  letter-spacing: 0.06em;
  transition: background-color 200ms ease-out, color 200ms ease-out, border-color 200ms ease-out;
}

.btn-primary {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
}
.btn-primary:hover { background: color-mix(in srgb, var(--color-primary) 82%, var(--color-contrast-surface)); }
.btn-primary:active { background: color-mix(in srgb, var(--color-primary) 70%, var(--color-contrast-surface)); }

.btn-ghost {
  background: transparent;
  border-color: var(--color-line);
  color: var(--color-ink-soft);
}
.btn-ghost:hover { border-color: var(--color-primary); color: var(--color-primary); }

.panel--dark .btn-ghost,
.section--deep .btn-ghost {
  border-color: var(--color-contrast-line);
  color: var(--color-contrast-ink);
}
.panel--dark .btn-ghost:hover,
.section--deep .btn-ghost:hover {
  border-color: var(--color-contrast-accent);
  color: var(--color-contrast-accent);
}

.link-underline {
  border-bottom: var(--border-thin) solid var(--color-primary);
  padding-bottom: 1px;
  transition: color 200ms ease-out, border-color 200ms ease-out;
}
.link-underline:hover { color: var(--color-accent); border-bottom-color: var(--color-accent); }

.tag {
  display: inline-block;
  padding: 3px 8px;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
  white-space: nowrap;
}
.tag--primary { border-color: var(--color-primary); color: var(--color-primary); }
.tag--accent { border-color: var(--color-accent); color: var(--color-accent); }

/* ============ header ============ */
.skip-link {
  position: absolute;
  left: var(--space-2);
  top: -120px;
  z-index: 90;
  padding: 10px var(--space-3);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  transition: top 200ms ease-out;
}
.skip-link:focus { top: var(--space-1); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--color-surface);
  border-bottom: var(--border-thin) solid var(--color-line);
}
.site-header[data-scrolled="true"] { border-bottom-color: var(--color-primary); }

.header-frame {
  display: grid;
  grid-template-columns: clamp(232px, 25%, 312px) minmax(0, 1fr) auto;
  align-items: stretch;
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.header-brand-block {
  display: flex;
  align-items: center;
  min-width: 0;
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding: var(--space-2) var(--space-3);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  min-width: 0;
}

.brand-mark {
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  background: var(--color-primary);
  color: var(--color-primary-ink);
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  line-height: 1;
}

.brand-text { display: flex; flex-direction: column; min-width: 0; }

.brand-name {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1.16;
  letter-spacing: 0.03em;
}

.brand-note {
  font-size: var(--text-xs);
  line-height: 1.45;
  letter-spacing: 0.02em;
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}

.header-nav-block {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--space-1);
  min-width: 0;
  padding: var(--space-2) var(--space-3);
}

.header-utility {
  display: flex;
  flex-wrap: wrap;
  gap: 0 var(--space-2);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
}
.utility-item + .utility-item {
  padding-left: var(--space-2);
  border-left: var(--border-thin) solid var(--color-line);
}

.header-nav-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2) var(--space-4);
}

.site-nav { min-width: 0; }

.nav-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
}

.nav-link {
  position: relative;
  display: inline-block;
  padding: 5px 0;
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--color-ink-soft);
  border-bottom: var(--border-thin) solid transparent;
  transition: color 200ms ease-out, border-color 200ms ease-out;
}
.nav-link:hover { color: var(--color-ink); }
.nav-link[aria-current="page"] {
  color: var(--color-ink);
  border-bottom-color: var(--color-primary);
}
.nav-link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 6px;
  height: 6px;
  background: var(--color-primary);
}

.header-cta { flex: 0 0 auto; }

.nav-toggle {
  display: none;
  align-items: center;
  gap: var(--space-1);
  align-self: center;
  margin-inline-start: var(--space-2);
  padding: 10px var(--space-2);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
  transition: color 200ms ease-out, border-color 200ms ease-out;
}
.nav-toggle[data-active="true"] {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.nav-toggle-bars {
  position: relative;
  display: block;
  width: 16px;
  height: var(--border-thin);
  background: currentColor;
}
.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: var(--border-thin);
  background: currentColor;
}
.nav-toggle-bars::before { top: -5px; }
.nav-toggle-bars::after { top: 5px; }

.nav-toggle-label { line-height: 1; }

.read-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  overflow: hidden;
  background: color-mix(in srgb, var(--color-line) 55%, transparent);
}
.read-progress-bar {
  display: block;
  width: 0;
  height: 100%;
  background: var(--color-accent);
  transition: width 140ms ease-out;
}

.frame-rail { display: none; }

@media (min-width: 1360px) {
  .frame-rail {
    display: block;
    position: fixed;
    top: 0;
    bottom: 0;
    left: calc((100vw - var(--container)) / 2 - 34px);
    width: 16px;
    z-index: 40;
    pointer-events: none;
    background:
      linear-gradient(var(--color-contrast-line), var(--color-contrast-line)) 0 0 / 1px 100% no-repeat,
      repeating-linear-gradient(to bottom, var(--color-line) 0 1px, transparent 1px 28px) 15px 0 / 1px 100% no-repeat;
  }
}

/* ============ footer ============ */
.site-footer {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  font-size: var(--text-sm);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.footer-frame {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) 1fr 0.8fr 0.8fr 1.15fr;
  gap: var(--space-6) var(--space-4);
  max-width: var(--container);
  margin-inline: auto;
  padding: var(--space-8) var(--gutter) var(--space-6);
  border-left: var(--border-thin) solid var(--color-contrast-line);
  border-right: var(--border-thin) solid var(--color-contrast-line);
}

.footer-brand-name {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: 1.1;
  letter-spacing: 0.03em;
}

.footer-brand-note {
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}

.footer-contact { margin-top: var(--space-4); }

.footer-contact-row {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: var(--space-2);
  padding: 6px 0;
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.site-footer .label {
  color: color-mix(in srgb, var(--color-contrast-ink) 52%, transparent);
  line-height: 1.6;
}

.footer-contact-value {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.7;
  word-break: break-all;
  color: var(--color-contrast-accent);
}

.footer-contact dd:not(.footer-contact-value) {
  font-size: var(--text-xs);
  line-height: 1.7;
  color: color-mix(in srgb, var(--color-contrast-ink) 78%, transparent);
}

.footer-col-title {
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-weight: var(--weight-heading);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-contrast-accent);
  padding-bottom: var(--space-1);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}

.footer-list {
  margin-top: var(--space-2);
  display: grid;
  gap: 4px;
}

.footer-link {
  display: inline-block;
  padding: 3px 0;
  font-size: var(--text-sm);
  color: color-mix(in srgb, var(--color-contrast-ink) 82%, transparent);
  border-bottom: var(--border-thin) solid transparent;
  transition: color 200ms ease-out, border-color 200ms ease-out;
}
.footer-link:hover {
  color: var(--color-contrast-ink);
  border-bottom-color: var(--color-contrast-accent);
}

.footer-scale {
  padding-left: var(--space-3);
  border-left: var(--border-thin) solid var(--color-contrast-line);
}
.footer-scale-label { display: block; }

.scale-ticks {
  display: flex;
  align-items: flex-end;
  height: 38px;
  margin-top: var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}
.scale-ticks li {
  position: relative;
  flex: 1 1 0;
  height: 100%;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: 3px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: color-mix(in srgb, var(--color-contrast-ink) 52%, transparent);
}
.scale-ticks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--border-thin);
  background: var(--color-contrast-line);
}
.scale-ticks li:nth-child(even)::before { top: 42%; }

.footer-version {
  margin-top: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: color-mix(in srgb, var(--color-contrast-ink) 70%, transparent);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-2) var(--space-4);
  max-width: var(--container);
  margin-inline: auto;
  padding: var(--space-3) var(--gutter) var(--space-6);
  border-top: var(--border-thin) solid var(--color-contrast-line);
  border-left: var(--border-thin) solid var(--color-contrast-line);
  border-right: var(--border-thin) solid var(--color-contrast-line);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
  font-size: var(--text-xs);
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}
.footer-legal-line { font-family: var(--font-mono); letter-spacing: 0.04em; }
.footer-legal-note { max-width: 54ch; }

/* ============ breadcrumbs ============ */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}
.breadcrumbs li { display: flex; align-items: center; gap: var(--space-1); }
.breadcrumbs li:not(:first-child)::before {
  content: "／";
  color: var(--color-line);
}
.breadcrumbs a:hover { color: var(--color-primary); }
.breadcrumb-current { color: var(--color-ink); }

/* ============ tabs ============ */
.tabs-bar {
  display: flex;
  flex-wrap: wrap;
  border-bottom: var(--border-thin) solid var(--color-line);
}

.tab-btn {
  margin-bottom: -1px;
  padding: 10px var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
  border-bottom: 2px solid transparent;
  transition: color 200ms ease-out, border-color 200ms ease-out;
}
.tab-btn:hover { color: var(--color-ink); }
.tab-btn[aria-selected="true"] {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.tab-panel { padding-top: var(--space-3); }
.tab-panel[hidden] { display: none; }

/* ============ filter chips ============ */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  padding: var(--space-1);
  background: var(--color-surface-deep);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  border: var(--border-thin) solid transparent;
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
  transition: background-color 200ms ease-out, color 200ms ease-out, border-color 200ms ease-out;
}
.chip:hover { background: var(--color-surface); }
.chip[aria-pressed="true"] {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
}

/* ============ timeline ============ */
.timeline {
  display: grid;
  gap: var(--space-4);
  padding-left: var(--space-3);
  border-left: var(--border-thin) solid var(--color-line);
}

.timeline-item { position: relative; }

.timeline-item::before {
  content: "";
  position: absolute;
  left: calc(var(--space-3) * -1 - 4px);
  top: 8px;
  width: 7px;
  height: 7px;
  background: var(--color-primary);
}

.timeline-node {
  display: inline-block;
  width: 7px;
  height: 7px;
  background: var(--color-primary);
}

.timeline-date {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

/* ============ entry cards ============ */
.entry-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(248px, 1fr));
  gap: var(--space-3);
}

.entry-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-3);
  background: var(--color-surface);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  transition: background-color 200ms ease-out, border-color 200ms ease-out;
}
.entry-card:hover {
  background: var(--color-surface-alt);
  border-color: var(--color-primary);
}
.entry-card:hover .entry-title { color: var(--color-accent); }

.entry-index {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.entry-title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: 1.16;
  transition: color 200ms ease-out;
}

.entry-meta {
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

/* ============ data table ============ */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
  font-variant-numeric: tabular-nums;
}
.data-table caption {
  padding-bottom: var(--space-1);
  text-align: left;
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}
.data-table th,
.data-table td {
  padding: var(--space-1) var(--space-2);
  text-align: left;
  vertical-align: top;
  border-bottom: var(--border-thin) solid var(--color-line);
}
.data-table thead th {
  font-weight: var(--weight-body);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-ink-muted);
}
.data-table tbody tr:nth-child(even) { background: var(--color-surface-deep); }
.data-table td.num { text-align: right; font-family: var(--font-mono); color: var(--color-accent); }

/* ============ media ============ */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  background: var(--color-surface-deep);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
}
.media > img,
.media > picture > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.media--16x9 { aspect-ratio: 16 / 9; }
.media--4x3 { aspect-ratio: 4 / 3; }
.media--3x2 { aspect-ratio: 3 / 2; }
.media--1x1 { aspect-ratio: 1 / 1; }
.media--wide { aspect-ratio: 21 / 9; }

.media-scrim {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: var(--overlay-scrim);
}

.media-caption {
  position: absolute;
  left: var(--space-3);
  right: var(--space-3);
  bottom: var(--space-2);
  z-index: 2;
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--color-primary-ink);
}

.media-note {
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

/* ============ index / scrollspy ============ */
.index-list { display: grid; gap: 2px; }

.index-link {
  display: block;
  padding: 8px var(--space-2) 8px var(--space-3);
  border-left: var(--border-thin) solid var(--color-line);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  transition: color 200ms ease-out, border-color 200ms ease-out, background-color 200ms ease-out;
}
.index-link:hover { color: var(--color-ink); }
.index-link[aria-current="true"] {
  color: var(--color-ink);
  border-left-color: var(--color-primary);
  background: var(--color-primary-soft);
}

/* ============ motion ============ */
html[data-js="on"] [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 240ms ease-out, transform 240ms ease-out;
}
html[data-js="on"] [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  html[data-js="on"] [data-reveal] { opacity: 1; transform: none; }
}

/* ============ responsive ============ */
@media (max-width: 1080px) {
  .footer-frame { grid-template-columns: minmax(0, 1.5fr) 1fr 1fr 1fr; }
  .footer-scale {
    grid-column: 1 / -1;
    padding-left: 0;
    padding-top: var(--space-3);
    border-left: 0;
    border-top: var(--border-thin) solid var(--color-contrast-line);
  }
}

@media (max-width: 960px) {
  .header-frame {
    grid-template-columns: minmax(0, 1fr) auto;
    padding-inline: var(--space-3);
  }
  .header-brand-block {
    grid-column: 1;
    grid-row: 1;
    margin-inline-start: calc(var(--space-3) * -1);
    padding: var(--space-2) var(--space-3);
  }
  .nav-toggle {
    display: inline-flex;
    grid-column: 2;
    grid-row: 1;
    margin-inline-start: 0;
  }
  .header-nav-block {
    grid-column: 1 / -1;
    grid-row: 2;
    padding: 0 0 var(--space-3);
  }
  .header-utility { display: none; }
  .header-nav-row {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-2);
  }
  .site-nav {
    display: none;
    padding-top: var(--space-1);
    border-top: var(--border-thin) solid var(--color-line);
  }
  .site-nav[data-open] { display: block; }
  .nav-list { flex-direction: column; align-items: stretch; gap: 0; }
  .nav-link {
    display: block;
    padding: 13px 0;
    font-size: var(--text-base);
    color: var(--color-ink-soft);
    border-bottom: var(--border-thin) solid var(--color-line);
  }
  .nav-link[aria-current="page"] {
    color: var(--color-ink);
    border-bottom-color: var(--color-primary);
  }
  .nav-link[aria-current="page"]::after {
    left: auto;
    right: 0;
    bottom: auto;
    top: 50%;
    transform: translateY(-50%);
  }
  .header-cta { width: 100%; }
  .sticky-panel { position: static; }

  .grid-12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }

  .footer-frame { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 720px) {
  :root { --gutter: 24px; }
  .container { padding-inline: var(--space-3); }
  .header-frame { padding-inline: var(--space-3); }
  .header-brand-block { margin-inline-start: calc(var(--space-3) * -1); }
  .section { padding-block: var(--space-6); }
  .section--lg { padding-block: var(--space-8); }
  .grid-12 { grid-template-columns: 1fr; gap: var(--space-3); }
  .split__panel { padding: var(--space-4) var(--space-3); }
  .entry-grid { grid-template-columns: 1fr; }
  .footer-frame {
    grid-template-columns: 1fr;
    padding-inline: var(--space-3);
    gap: var(--space-4);
  }
  .footer-legal {
    padding-inline: var(--space-3);
    flex-direction: column;
  }
  .footer-contact-row { grid-template-columns: 1fr; gap: 2px; }
  .brand-note { display: none; }
  .brand-name { font-size: var(--text-base); }
}