/* ETCA / editorial technology system
   Swiss grid, content-first hierarchy and motion with reduced-motion fallbacks. */

:root {
  --etca-canvas: #efefe8;
  --etca-surface: #fafaf5;
  --etca-surface-2: #e7e8df;
  --etca-ink: #11130f;
  --etca-muted: #60665d;
  --etca-line: #cbd0c5;
  --etca-accent: #c8ff3d;
  --etca-accent-ink: #11170a;
  --etca-hero: #101410;
  --etca-hero-ink: #f1f4e9;
  --etca-code: #101511;
  --etca-code-line: #2b342c;
  --etca-radius: 4px;
  --etca-shell: 1280px;
  --etca-reading: 820px;
  --etca-ease: cubic-bezier(.16, 1, .3, 1);
  --etca-ease-in: cubic-bezier(.7, 0, .84, 0);
  --body-bg-color: var(--etca-canvas);
  --content-bg-color: var(--etca-surface);
  --card-bg-color: var(--etca-surface-2);
  --text-color: var(--etca-ink);
  --link-color: #335c18;
  --link-hover-color: #17290c;
  --theme-color: var(--etca-surface);
  --highlight-background: var(--etca-code);
  --highlight-foreground: #e8eee3;
}

[data-theme="dark"] {
  --etca-canvas: #0e100f;
  --etca-surface: #161916;
  --etca-surface-2: #1c211d;
  --etca-ink: #f0f2e9;
  --etca-muted: #a3aa9f;
  --etca-line: #353b34;
  --etca-accent: #c8ff3d;
  --etca-accent-ink: #101509;
  --etca-hero: #080b09;
  --etca-hero-ink: #f4f6ee;
  --etca-code: #090d0a;
  --etca-code-line: #273029;
  --body-bg-color: var(--etca-canvas);
  --content-bg-color: var(--etca-surface);
  --card-bg-color: var(--etca-surface-2);
  --text-color: var(--etca-ink);
  --link-color: #c8ff3d;
  --link-hover-color: #e2ff96;
  --theme-color: var(--etca-surface);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--etca-canvas);
  color: var(--etca-ink);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", Inter, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: -.01em;
  overflow-x: clip;
}

.skip-link {
  background: var(--etca-accent);
  color: var(--etca-accent-ink);
  font-size: 13px;
  font-weight: 800;
  left: 16px;
  padding: 11px 16px;
  position: fixed;
  top: 12px;
  transform: translateY(-150%);
  transition: transform .2s var(--etca-ease);
  z-index: 3000;
}
.skip-link:focus { color: var(--etca-accent-ink); transform: translateY(0); }

::selection {
  background: var(--etca-accent);
  color: var(--etca-accent-ink);
}

a,
button,
[role="button"] {
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

a {
  border: 0;
}

a:focus-visible,
button:focus-visible,
[role="button"]:focus-visible,
input:focus-visible {
  outline: 3px solid var(--etca-accent);
  outline-offset: 3px;
}

.headband,
.sidebar,
.sidebar-toggle,
.github-corner {
  display: none !important;
}

/* Header */
.main {
  display: block;
  max-width: none;
  min-height: calc(100vh - 220px);
  width: 100%;
}

header.header {
  background: color-mix(in srgb, var(--etca-canvas) 88%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--etca-line) 70%, transparent);
  backdrop-filter: blur(18px) saturate(1.2);
  -webkit-backdrop-filter: blur(18px) saturate(1.2);
  position: sticky;
  top: 0;
  transition: background-color .25s ease, border-color .25s ease;
  z-index: 1000;
}

header.header.is-scrolled {
  background: color-mix(in srgb, var(--etca-canvas) 96%, transparent);
  border-bottom-color: var(--etca-line);
}

.header-inner {
  align-items: center;
  background: transparent;
  border-radius: 0;
  box-shadow: none;
  display: flex;
  gap: 36px;
  height: 72px;
  margin: 0 auto;
  max-width: var(--etca-shell);
  padding: 0 24px;
  width: 100%;
}

.site-brand-container {
  align-items: center;
  background: transparent;
  display: flex;
  flex: 0 0 auto;
  padding: 0;
}

.site-meta {
  padding: 0;
}

.etca-brand {
  align-items: center;
  color: var(--etca-ink);
  display: inline-flex;
  gap: 11px;
  padding: 0;
  text-decoration: none;
}

.etca-brand:hover {
  color: var(--etca-ink);
}

.etca-brand-mark {
  align-items: center;
  display: flex;
  height: 40px;
  justify-content: center;
  overflow: visible;
  width: 40px;
}

.etca-brand-symbol {
  color: var(--etca-ink);
  display: block;
  height: 40px;
  margin: 0;
  overflow: visible;
  transition: color .24s var(--etca-ease), transform .24s var(--etca-ease);
  width: 40px;
}

.etca-brand-symbol__frame {
  fill: transparent;
  stroke: currentColor;
  stroke-width: 2px;
}

.etca-brand-symbol__e {
  fill: currentColor;
}

.etca-brand-symbol__signal {
  fill: var(--etca-accent);
}

.etca-brand:hover .etca-brand-symbol {
  transform: rotate(-4deg) scale(1.04);
}

.etca-brand-copy {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.etca-brand-copy strong {
  font-family: Arial, sans-serif;
  font-size: 18px;
  font-weight: 900;
  letter-spacing: .14em;
}

.etca-brand-copy small {
  color: var(--etca-muted);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 8px;
  font-weight: 600;
  letter-spacing: .11em;
  margin-top: 6px;
  white-space: nowrap;
}

.site-nav {
  display: block;
  flex: 1 1 auto;
  margin: 0;
  padding: 0;
}

.main-menu {
  align-items: center;
  display: flex;
  gap: 1px;
  justify-content: flex-end;
  margin: 0;
  padding: 0;
}

.menu .menu-item {
  display: block;
  margin: 0;
}

.menu .menu-item a {
  color: var(--etca-muted);
  display: flex;
  font-size: 12px;
  font-weight: 650;
  gap: 0;
  letter-spacing: .02em;
  line-height: 1;
  padding: 15px 10px;
  position: relative;
  text-align: left;
  transition: color .2s ease;
  white-space: nowrap;
}

.menu .menu-item a::after {
  background: var(--etca-accent);
  bottom: 7px;
  content: "";
  height: 2px;
  left: 10px;
  position: absolute;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .25s var(--etca-ease);
  width: calc(100% - 20px);
}

.menu .menu-item a:hover,
.menu .menu-item a.menu-item-active {
  background: transparent;
  color: var(--etca-ink);
}

.menu .menu-item a:hover::after,
.menu .menu-item a.menu-item-active::after {
  transform: scaleX(1);
  transform-origin: left;
}

.menu .menu-item i,
.menu .menu-item .badge,
.main-menu .menu-item-active::after {
  display: none;
}

.menu .menu-item-search i {
  display: inline-block;
  font-size: 13px;
  width: 16px;
}

.menu .menu-item-search a::after {
  display: none;
}

.site-nav-toggle,
.site-nav-right {
  display: none;
}

.etca-header-actions {
  align-items: center;
  display: flex;
  flex: 0 0 auto;
  gap: 2px;
}

/* Theme utilities */
.tool-buttons {
  align-items: center;
  background: color-mix(in srgb, var(--etca-surface) 94%, transparent);
  border: 1px solid var(--etca-line);
  bottom: 18px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, .08);
  display: flex;
  gap: 2px;
  padding: 4px;
  position: fixed;
  right: 18px;
  z-index: 900;
}

.tool-buttons > .button,
.tool-buttons > .back-to-top {
  align-items: center;
  background: transparent;
  border: 0;
  border-radius: 0;
  bottom: auto;
  color: var(--etca-muted);
  cursor: pointer;
  display: flex;
  height: 40px;
  justify-content: center;
  line-height: 1;
  opacity: 1;
  padding: 0;
  position: static;
  right: auto;
  transform: none;
  transition: background-color .2s ease, color .2s ease;
  visibility: visible;
  width: 40px;
}

.tool-buttons > .button:hover,
.tool-buttons > .back-to-top:hover,
.tool-buttons > .back-to-top.back-to-top-on {
  background: var(--etca-ink);
  color: var(--etca-surface);
}

.tool-buttons .back-to-top span {
  display: none;
}

.etca-weather {
  flex: 0 0 auto;
}

.etca-weather-button {
  align-items: center;
  background: transparent;
  border: 0;
  border-left: 1px solid var(--etca-line);
  color: var(--etca-ink);
  cursor: pointer;
  display: flex;
  font: inherit;
  gap: 9px;
  min-height: 44px;
  min-width: 154px;
  padding: 0 10px;
  text-align: left;
  transition: background-color .2s ease, color .2s ease;
}

.etca-weather-button:hover {
  background: var(--etca-surface-2);
}

.etca-weather-button:focus-visible {
  outline: 2px solid var(--etca-ink);
  outline-offset: 2px;
}

.etca-weather-icon {
  align-items: center;
  color: var(--etca-ink);
  display: flex;
  flex: 0 0 24px;
  font-size: 15px;
  justify-content: center;
  width: 24px;
}

.etca-weather[data-state="loading"] .etca-weather-icon i {
  animation: etca-weather-pulse 1.2s ease-in-out infinite;
}

.etca-weather[data-state="error"] .etca-weather-icon {
  color: var(--etca-muted);
}

.etca-weather-copy {
  align-items: center;
  display: flex;
  gap: 8px;
  min-width: 0;
}

.etca-weather-meta {
  color: var(--etca-muted);
  display: block;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 9px;
  letter-spacing: .04em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.etca-weather-copy strong {
  font-family: Arial, sans-serif;
  font-size: 17px;
  letter-spacing: -.04em;
  line-height: 1;
  white-space: nowrap;
}

@keyframes etca-weather-pulse {
  50% { opacity: .45; transform: translateY(-2px); }
}

.reading-progress-bar {
  background: transparent;
  height: 2px;
}

.reading-progress-bar::before {
  background: var(--etca-accent);
}

/* App shell */
.main-inner {
  border-radius: 0;
  margin: 0 auto;
  padding: 56px 24px 88px;
  width: min(100%, var(--etca-shell));
}

.main-inner > .post-block,
.main-inner > .flinks-block,
.main-inner > .tabs-comment,
.main-inner > .comments,
.main-inner > .post-comments,
.main-inner > .pagination {
  background: var(--etca-surface);
  border: 1px solid var(--etca-line);
  border-radius: var(--etca-radius);
  box-shadow: none;
}

.main-inner > .post-block:not(:first-child),
.main-inner > .flinks-block:not(:first-child),
.main-inner > .comments:not(:first-child),
.main-inner > .post-comments:not(:first-child) {
  margin-top: 24px;
}

.post-block,
.flinks-block,
.comments,
.post-comments {
  padding: clamp(28px, 6vw, 74px);
}

.post-content {
  margin: 0 auto;
  max-width: 920px;
}

.post-header {
  border-bottom: 1px solid var(--etca-line);
  margin-bottom: 42px;
  padding-bottom: 32px;
  text-align: left;
}

.post-title {
  color: var(--etca-ink);
  font-family: Arial, "Noto Sans SC", "PingFang SC", sans-serif;
  font-size: clamp(34px, 5.5vw, 66px);
  font-weight: 900;
  letter-spacing: -.065em;
  line-height: 1.03;
  margin: 0;
  text-align: left;
}

.post-title-link {
  background: none;
  color: inherit;
}

.post-title-link::before {
  display: none;
}

.post-title-link:hover {
  color: color-mix(in srgb, var(--etca-ink) 65%, #5f7f19);
}

.post-meta-container {
  color: var(--etca-muted);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 11px;
  letter-spacing: .04em;
  margin-top: 20px;
  text-align: left;
  text-transform: uppercase;
}

.post-meta-item-icon {
  color: var(--etca-muted);
}

.post-body {
  color: var(--etca-ink);
  font-family: inherit;
  font-size: 16px;
  line-height: 1.86;
  text-align: left !important;
}

.post-body > p,
.post-body > ul,
.post-body > ol,
.post-body > blockquote { max-width: 76ch; }
.post-body > p:first-child { font-size: 1.06em; }
.post-body hr { border-color: var(--etca-line); margin: 3.2em 0; }
.post-nav { border-color: var(--etca-line); }
.post-nav-item a { min-height: 44px; }

.post-body h1,
.post-body h2,
.post-body h3,
.post-body h4,
.post-body h5,
.post-body h6 {
  border: 0;
  color: var(--etca-ink);
  font-family: Arial, "Noto Sans SC", "PingFang SC", sans-serif;
  font-weight: 800;
  letter-spacing: -.045em;
  line-height: 1.22;
  scroll-margin-top: 100px;
}

.post-body h1 { font-size: 2.15rem; margin: 2.1em 0 .75em; }
.post-body h2 { font-size: 1.72rem; margin: 2.25em 0 .7em; padding-top: .2em; }
.post-body h3 { font-size: 1.28rem; margin: 1.9em 0 .55em; }
.post-body h4 { font-size: 1.08rem; }

.post-body h2::before {
  background: var(--etca-accent);
  content: "";
  display: inline-block;
  height: .68em;
  margin-right: .38em;
  width: .18em;
}

.post-body a {
  border-bottom: 1px solid currentColor;
  color: var(--link-color);
  text-decoration: none;
  text-underline-offset: 3px;
}

.post-body a:hover {
  color: var(--link-hover-color);
}

.post-body img {
  background: transparent;
  border: 0;
  border-radius: 6px;
  box-shadow: 0 14px 38px color-mix(in srgb, var(--etca-ink) 10%, transparent);
  height: auto;
}

.post-body img[src$=".svg"],
.post-body img[src*=".svg?"],
.post-body img[src*="/logo/" i],
.post-body img[src*="/imgs/" i],
.post-body img[alt*="logo" i],
.post-body img[alt*="标志"] {
  border-radius: 0;
  box-shadow: none;
}

.post-body blockquote {
  background: var(--etca-surface-2);
  border: 0;
  border-left: 5px solid var(--etca-accent);
  color: var(--etca-ink);
  font-size: 1.04em;
  margin: 2em 0;
  padding: 20px 24px;
}

.post-body code {
  background: var(--etca-surface-2);
  border: 1px solid color-mix(in srgb, var(--etca-line) 75%, transparent);
  border-radius: 3px;
  color: var(--etca-ink);
  font-family: "JetBrains Mono", "Cascadia Code", Consolas, monospace;
  font-size: .88em;
  padding: .14em .38em;
}

.post-body pre {
  font-family: "JetBrains Mono", "Cascadia Code", Consolas, monospace;
}

/* Chroma: isolate syntax code from inline-code and table styles.
   This explicitly fixes light-theme white blocks inside highlighted code. */
.post-body .highlight {
  background: var(--etca-code) !important;
  border: 1px solid var(--etca-code-line);
  border-radius: 10px;
  box-shadow: none;
  color: #e8eee3;
  margin: 2em 0;
  overflow: hidden;
  position: relative;
}

.post-body .highlight > .code-header {
  background: #161c17;
  border-bottom: 1px solid var(--etca-code-line);
  color: #b6c0b5;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 11px;
  letter-spacing: .08em;
  min-height: 38px;
  padding: 6px 10px;
  text-transform: uppercase;
}

.post-body .highlight > .code-header::before {
  background: var(--etca-accent);
  box-shadow: none;
  height: 7px;
  margin-left: 4px;
  width: 7px;
}

.post-body .highlight .chroma,
.post-body .highlight pre,
.post-body .highlight code,
.post-body .highlight table,
.post-body .highlight tbody,
.post-body .highlight tr,
.post-body .highlight td,
.post-body .highlight .lntable,
.post-body .highlight .lntd {
  background-color: transparent !important;
  background-image: none !important;
  border: 0 !important;
  border-radius: 0 !important;
  box-shadow: none !important;
  color: inherit;
}

.post-body .highlight code {
  display: inline;
  font-size: inherit;
  padding: 0 !important;
}

.post-body .highlight pre {
  margin: 0;
  padding: 12px 0;
}

.post-body .highlight table,
.post-body .highlight .lntable {
  border-collapse: collapse;
  display: table;
  margin: 0;
  overflow: visible;
  width: 100%;
}

.post-body .highlight .lntd {
  padding: 0 !important;
}

.post-body .highlight .lntd:first-child {
  background: #0b0f0c !important;
  border-right: 1px solid var(--etca-code-line) !important;
  color: #6f7c70;
  min-width: 48px;
  width: 48px;
}

.post-body .highlight .lntd:last-child {
  background: var(--etca-code) !important;
}

.post-body .highlight .copy-btn {
  background: transparent !important;
  color: #bdc8bc !important;
}

.post-body table:not(.lntable) {
  border: 1px solid var(--etca-line);
  border-collapse: collapse;
  display: table;
  margin: 1.7em 0;
  overflow: hidden;
  width: 100%;
}

.post-body table:not(.lntable) th {
  background: var(--etca-ink);
  color: var(--etca-surface);
  font-weight: 700;
}

.post-body table:not(.lntable) th,
.post-body table:not(.lntable) td {
  border-color: var(--etca-line);
  padding: 11px 14px;
}

.post-button .btn,
.post-button a {
  background: var(--etca-ink);
  border: 1px solid var(--etca-ink);
  border-radius: 0;
  color: var(--etca-surface);
  font-weight: 700;
  padding: 11px 18px;
}

.post-footer {
  border-top-color: var(--etca-line);
  color: var(--etca-muted);
}

.pagination {
  border-top: 0;
  margin-top: 24px;
  padding: 10px;
}

.pagination .page-number.current {
  background: var(--etca-ink);
  border-radius: 0;
  color: var(--etca-surface);
}

/* Homepage */
.main-inner.etca-home {
  max-width: 1360px;
  padding: 24px 24px 100px;
}

.home-hero {
  background: var(--etca-hero);
  color: var(--etca-hero-ink);
  display: grid;
  grid-template-columns: 52px repeat(11, minmax(0, 1fr));
  grid-template-rows: minmax(590px, 1fr) auto;
  min-height: min(820px, calc(100svh - 96px));
  overflow: hidden;
  position: relative;
}

.hero-grid-lines {
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, .055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, .04) 1px, transparent 1px);
  background-size: calc(100% / 12) 100%, 100% 88px;
  inset: 0;
  pointer-events: none;
  position: absolute;
}

.hero-rail {
  align-items: center;
  border-right: 1px solid rgba(255, 255, 255, .14);
  display: flex;
  gap: 23px;
  grid-column: 1;
  grid-row: 1 / 3;
  justify-content: center;
  position: relative;
  writing-mode: vertical-rl;
  z-index: 2;
}

.hero-rail span {
  color: #9da69a;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .18em;
}

.home-hero-copy {
  align-self: center;
  grid-column: 2 / 8;
  grid-row: 1;
  max-width: 760px;
  padding: 70px 44px 64px;
  position: relative;
  z-index: 3;
}

.home-eyebrow,
.section-index {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .13em;
  margin: 0;
  text-transform: uppercase;
}

.home-eyebrow {
  align-items: center;
  color: #aeb7aa;
  display: flex;
  gap: 10px;
  margin-bottom: 42px;
}

.status-dot {
  background: var(--etca-accent);
  box-shadow: 0 0 0 4px rgba(200, 255, 61, .12);
  display: inline-block;
  height: 7px;
  width: 7px;
}

.home-hero h1 {
  color: var(--etca-hero-ink);
  font-family: Arial, "Noto Sans SC", "PingFang SC", sans-serif;
  font-size: clamp(64px, 7.2vw, 112px);
  font-weight: 900;
  letter-spacing: -.085em;
  line-height: .88;
  margin: 0;
  text-transform: uppercase;
}

.hero-title-line {
  display: block;
  overflow: hidden;
  padding-bottom: .08em;
}

.hero-title-line > span {
  display: block;
  transform: translateY(0);
}

.hero-title-accent {
  color: var(--etca-accent);
  margin-left: clamp(10px, 4vw, 76px);
}

.etca-js .home-hero:not(.is-ready) .hero-title-line > span,
.etca-js .home-hero:not(.is-ready) [data-hero-kicker],
.etca-js .home-hero:not(.is-ready) [data-hero-copy] {
  opacity: 0;
  transform: translateY(110%);
}

.home-hero.is-ready .hero-title-line > span {
  transition: opacity .75s ease, transform .9s var(--etca-ease);
}

.home-hero.is-ready .hero-title-line:nth-child(2) > span {
  transition-delay: 90ms;
}

.home-hero.is-ready [data-hero-kicker],
.home-hero.is-ready [data-hero-copy] {
  opacity: 1;
  transform: translateY(0);
  transition: opacity .65s ease 180ms, transform .8s var(--etca-ease) 180ms;
}

.hero-copy-bottom {
  display: grid;
  gap: 28px;
  grid-template-columns: minmax(0, 390px);
  margin-top: 42px;
}

.home-hero-lead {
  color: #b8c0b5;
  font-size: 15px;
  line-height: 1.78;
  margin: 0;
}

.home-hero-actions {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 23px;
}

.etca-button {
  --mag-x: 0px;
  --mag-y: 0px;
  align-items: center;
  border: 1px solid transparent;
  border-radius: 0;
  cursor: pointer;
  display: inline-flex;
  font-size: 13px;
  font-weight: 750;
  gap: 18px;
  justify-content: center;
  line-height: 1;
  min-height: 50px;
  padding: 0 20px;
  text-decoration: none;
  transform: translate3d(var(--mag-x), var(--mag-y), 0);
  transition: background-color .2s ease, color .2s ease, transform .35s var(--etca-ease);
}

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

.etca-button-primary:hover {
  background: #dcff83;
  color: var(--etca-accent-ink);
}

.etca-button i {
  font-size: 11px;
  transition: transform .25s var(--etca-ease);
}

.etca-button:hover i {
  transform: translateX(4px);
}

.etca-inline-link {
  border-bottom: 1px solid currentColor;
  color: inherit;
  font-size: 12px;
  font-weight: 650;
  padding-bottom: 3px;
  text-decoration: none;
}

.etca-inline-link:hover {
  color: var(--etca-accent);
}

.home-hero-art {
  --pointer-x: 0;
  --pointer-y: 0;
  align-self: stretch;
  border-left: 1px solid rgba(255, 255, 255, .14);
  grid-column: 8 / 13;
  grid-row: 1;
  overflow: hidden;
  position: relative;
  transform: translate3d(calc(var(--pointer-x) * 8px), calc(var(--pointer-y) * 8px), 0);
  transition: transform .6s var(--etca-ease);
  z-index: 2;
}

.hero-art-word {
  color: transparent;
  font-family: Arial, sans-serif;
  font-size: clamp(76px, 9vw, 146px);
  font-weight: 900;
  left: 50%;
  letter-spacing: -.09em;
  opacity: .2;
  position: absolute;
  top: 50%;
  transform: translate(-50%, -54%) rotate(-90deg);
  -webkit-text-stroke: 1px #dbe4d7;
  white-space: nowrap;
}

.hero-scan-line {
  background: linear-gradient(90deg, transparent, var(--etca-accent), transparent);
  box-shadow: 0 0 28px rgba(200, 255, 61, .3);
  height: 1px;
  left: 8%;
  opacity: .7;
  position: absolute;
  right: 8%;
  top: 21%;
  animation: etca-scan 5s var(--etca-ease) infinite;
}

.hero-orbit {
  border: 1px solid rgba(255, 255, 255, .18);
  border-radius: 50%;
  left: 50%;
  position: absolute;
  top: 50%;
}

.hero-orbit-a {
  height: 330px;
  margin: -165px 0 0 -165px;
  width: 330px;
  animation: etca-orbit 18s linear infinite;
}

.hero-orbit-b {
  height: 440px;
  margin: -220px 0 0 -220px;
  opacity: .5;
  width: 440px;
  animation: etca-orbit 29s linear infinite reverse;
}

.hero-orbit span {
  background: var(--etca-accent);
  height: 8px;
  left: 50%;
  position: absolute;
  top: -4px;
  width: 8px;
}

.hero-logo-core {
  align-items: center;
  background: rgba(240, 242, 233, .96);
  border: 0;
  border-radius: 50%;
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, .14),
    0 18px 80px rgba(0, 0, 0, .36),
    0 0 70px rgba(204, 255, 0, .09);
  display: flex;
  height: 220px;
  justify-content: center;
  left: 50%;
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 220px;
  animation: etca-float 6s var(--etca-ease) infinite alternate;
}

.hero-logo-core::before {
  border: 1px solid var(--etca-accent);
  border-radius: 50%;
  content: "";
  inset: 15px;
  opacity: .28;
  position: absolute;
}

.hero-logo-core .institution-mark {
  clip-path: circle(49% at 50% 50%);
  height: 158px;
  margin: 0;
  object-fit: contain;
  position: relative;
  width: 158px;
}

.hero-code-card {
  background: rgba(12, 16, 13, .86);
  border: 1px solid rgba(255, 255, 255, .2);
  bottom: 54px;
  color: #dce4d8;
  display: flex;
  flex-direction: column;
  gap: 8px;
  left: 30px;
  padding: 15px 17px;
  position: absolute;
}

.code-card-label,
.hero-coordinate {
  color: #7e897e;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 8px;
  letter-spacing: .11em;
}

.hero-code-card code {
  background: none;
  color: var(--etca-accent);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 11px;
}

.hero-coordinate {
  position: absolute;
  writing-mode: vertical-rl;
}

.hero-coordinate-a { right: 18px; top: 26px; }
.hero-coordinate-b { right: 18px; bottom: 28px; }

.home-hero-stats {
  border-top: 1px solid rgba(255, 255, 255, .14);
  display: grid;
  grid-column: 2 / 13;
  grid-row: 2;
  grid-template-columns: repeat(3, 1fr);
  z-index: 3;
}

.hero-stat {
  align-items: end;
  border-right: 1px solid rgba(255, 255, 255, .14);
  display: flex;
  gap: 13px;
  min-height: 92px;
  padding: 21px 28px;
}

.hero-stat:last-child {
  border-right: 0;
}

.hero-stat strong {
  color: var(--etca-hero-ink);
  font-family: Arial, sans-serif;
  font-size: 31px;
  font-weight: 900;
  letter-spacing: -.06em;
  line-height: 1;
}

.hero-stat span {
  color: #8f998d;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 8px;
  letter-spacing: .09em;
  line-height: 1.35;
  max-width: 86px;
}

.home-ticker {
  border-bottom: 1px solid var(--etca-line);
  border-top: 1px solid var(--etca-line);
  margin-top: 16px;
  overflow: hidden;
  padding: 13px 0;
}

.home-ticker-track {
  align-items: center;
  animation: etca-ticker 26s linear infinite;
  display: flex;
  flex-shrink: 0;
  gap: 28px;
  min-width: max-content;
  width: max-content;
}

.home-ticker-track span {
  color: var(--etca-muted);
  font-family: Arial, sans-serif;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .12em;
}

.home-ticker-track i {
  background: var(--etca-accent);
  display: block;
  height: 7px;
  transform: rotate(45deg);
  width: 7px;
}

.home-manifesto {
  border-bottom: 1px solid var(--etca-line);
  display: grid;
  gap: 44px;
  grid-template-columns: repeat(12, 1fr);
  padding: 132px 0 122px;
}

.section-index {
  color: var(--etca-muted);
  grid-column: 1 / 4;
  padding-top: 12px;
}

.home-manifesto > div {
  grid-column: 4 / 13;
}

.home-manifesto h2,
.home-section-heading h2,
.home-cta h2 {
  color: var(--etca-ink);
  font-family: Arial, "Noto Sans SC", "PingFang SC", sans-serif;
  font-size: clamp(48px, 7vw, 92px);
  font-weight: 900;
  letter-spacing: -.075em;
  line-height: .98;
  margin: 0;
  scroll-margin-top: 100px;
}

.home-manifesto h2 em {
  color: var(--etca-muted);
  font-family: ui-serif, "Songti SC", STSong, serif;
  font-weight: 500;
}

.home-manifesto > div > p {
  color: var(--etca-muted);
  font-size: 15px;
  line-height: 1.85;
  margin: 42px 0 0 auto;
  max-width: 560px;
}

.home-section {
  border-bottom: 1px solid var(--etca-line);
  padding: 116px 0 124px;
}

.home-section-heading {
  align-items: end;
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(12, 1fr);
  margin-bottom: 58px;
}

.home-section-heading .section-index {
  grid-column: 1 / 4;
}

.home-section-heading h2 {
  font-size: clamp(44px, 6vw, 76px);
  grid-column: 4 / 10;
}

.home-section-heading > p:not(.section-index),
.home-section-heading > .etca-inline-link {
  align-self: end;
  color: var(--etca-muted);
  font-size: 13px;
  grid-column: 10 / 13;
  line-height: 1.7;
  margin: 0 0 5px;
}

.home-section-heading > .etca-inline-link {
  color: var(--etca-ink);
  justify-self: start;
}

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

.home-feature-card {
  --tilt-x: 0deg;
  --tilt-y: 0deg;
  --glow-x: 50%;
  --glow-y: 50%;
  background: var(--etca-surface);
  border: 1px solid var(--etca-line);
  color: var(--etca-ink);
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-rows: auto 1fr;
  min-height: 310px;
  overflow: hidden;
  padding: 26px;
  position: relative;
  text-decoration: none;
  transform: perspective(900px) rotateX(var(--tilt-x)) rotateY(var(--tilt-y));
  transform-style: preserve-3d;
  transition: border-color .25s ease, color .25s ease, transform .45s var(--etca-ease);
}

.home-feature-card::before {
  background: radial-gradient(circle at var(--glow-x) var(--glow-y), rgba(200, 255, 61, .13), transparent 32%);
  content: "";
  inset: 0;
  opacity: 0;
  pointer-events: none;
  position: absolute;
  transition: opacity .25s ease;
}

.home-feature-card:hover {
  border-color: var(--etca-ink);
  color: var(--etca-ink);
}

.home-feature-card:hover::before {
  opacity: 1;
}

.feature-activities { grid-column: span 7; }
.feature-achievements { grid-column: span 5; background: var(--etca-ink); border-color: var(--etca-ink); color: var(--etca-surface); }
.feature-question-bank { grid-column: span 5; }
.feature-resources { grid-column: span 7; background: var(--etca-accent); border-color: var(--etca-accent); color: var(--etca-accent-ink); }

.feature-achievements:hover { color: var(--etca-surface); border-color: var(--etca-accent); }
.feature-resources:hover { color: var(--etca-accent-ink); border-color: var(--etca-ink); }
.feature-achievements::before,
.feature-resources::before { display: none; }

.feature-number {
  color: currentColor;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .09em;
  opacity: .6;
  position: relative;
}

.feature-icon {
  align-items: center;
  border: 1px solid currentColor;
  display: flex;
  font-size: 15px;
  height: 42px;
  justify-content: center;
  margin-left: auto;
  opacity: .82;
  position: relative;
  width: 42px;
}

.feature-arrow {
  align-self: end;
  font-size: 12px;
  grid-column: 3;
  grid-row: 2;
  opacity: .75;
  position: relative;
  transition: transform .25s var(--etca-ease);
}

.home-feature-card:hover .feature-arrow {
  transform: translate(3px, -3px);
}

.home-feature-card > div {
  align-self: end;
  grid-column: 1 / 3;
  grid-row: 2;
  position: relative;
}

.home-feature-card h3 {
  color: inherit;
  font-family: Arial, "Noto Sans SC", "PingFang SC", sans-serif;
  font-size: clamp(32px, 4vw, 54px);
  font-weight: 900;
  letter-spacing: -.065em;
  line-height: .98;
  margin: 0 0 20px;
}

.home-feature-card p {
  color: inherit;
  font-size: 12px;
  line-height: 1.65;
  margin: 0;
  max-width: 380px;
  opacity: .66;
}

.home-journal-heading > .etca-inline-link {
  align-self: end;
}

.home-journal-layout {
  display: grid;
  gap: 32px;
  grid-template-columns: 7fr 5fr;
}

.journal-feature {
  min-width: 0;
}

.journal-feature-media {
  align-items: center;
  aspect-ratio: 1.55;
  background:
    radial-gradient(circle at 74% 24%, rgba(200, 255, 61, .85), transparent 22%),
    var(--etca-ink);
  color: var(--etca-accent);
  display: flex;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.journal-feature-media::after {
  background-image: linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px), linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px);
  background-size: 40px 40px;
  content: "";
  inset: 0;
  position: absolute;
}

.journal-feature-media img {
  height: 100%;
  margin: 0;
  object-fit: cover;
  position: relative;
  transition: transform .7s var(--etca-ease), filter .4s ease;
  width: 100%;
  z-index: 1;
}

.journal-feature:hover .journal-feature-media img {
  filter: saturate(.85) contrast(1.05);
  transform: scale(1.035);
}

.journal-media-type {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: clamp(54px, 9vw, 116px);
  font-weight: 800;
  letter-spacing: -.1em;
  position: relative;
  z-index: 1;
}

.journal-media-index {
  background: var(--etca-accent);
  bottom: 0;
  color: var(--etca-accent-ink);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 9px;
  font-weight: 700;
  left: 0;
  letter-spacing: .09em;
  padding: 9px 12px;
  position: absolute;
  z-index: 2;
}

.journal-feature-copy {
  padding-top: 22px;
}

.journal-meta {
  color: var(--etca-muted);
  display: flex;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 9px;
  gap: 20px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.journal-feature h3 {
  font-family: Arial, "Noto Sans SC", "PingFang SC", sans-serif;
  font-size: clamp(28px, 3vw, 42px);
  font-weight: 850;
  letter-spacing: -.055em;
  line-height: 1.12;
  margin: 16px 0 11px;
}

.journal-feature h3 a {
  color: var(--etca-ink);
}

.journal-feature h3 a:hover {
  color: color-mix(in srgb, var(--etca-ink) 65%, #5f7f19);
}

.journal-feature-copy > p {
  color: var(--etca-muted);
  font-size: 12px;
  line-height: 1.75;
  margin: 0;
  max-width: 620px;
}

.journal-list {
  border-top: 1px solid var(--etca-line);
}

.journal-row {
  border-bottom: 1px solid var(--etca-line);
}

.journal-row > a {
  align-items: center;
  color: var(--etca-ink);
  display: grid;
  gap: 18px;
  grid-template-columns: 52px 1fr 22px;
  min-height: 102px;
  padding: 18px 4px;
  position: relative;
  text-decoration: none;
}

.journal-row > a::before {
  background: var(--etca-accent);
  bottom: 0;
  content: "";
  left: 0;
  position: absolute;
  top: 0;
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform .3s var(--etca-ease);
  width: 3px;
}

.journal-row > a:hover::before {
  transform: scaleY(1);
  transform-origin: top;
}

.journal-row-date {
  color: var(--etca-muted);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 9px;
}

.journal-row-main {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.journal-row-main strong {
  font-size: 14px;
  font-weight: 700;
  line-height: 1.45;
}

.journal-row-main small {
  color: var(--etca-muted);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 8px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.journal-row-arrow {
  font-size: 11px;
  transition: transform .25s var(--etca-ease);
}

.journal-row > a:hover .journal-row-arrow {
  transform: translateX(5px);
}

.home-cta {
  background: var(--etca-hero);
  color: var(--etca-hero-ink);
  display: grid;
  gap: 30px;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  margin-top: 16px;
  min-height: 490px;
  overflow: hidden;
  padding: clamp(44px, 7vw, 84px);
  position: relative;
}

.home-cta .section-index {
  color: #8f998d;
  grid-column: 1 / 4;
}

.home-cta h2 {
  align-self: center;
  color: var(--etca-hero-ink);
  grid-column: 4 / 11;
  grid-row: 1 / 3;
  position: relative;
  z-index: 2;
}

.home-cta .etca-button {
  align-self: end;
  grid-column: 10 / 13;
  grid-row: 2;
  justify-self: end;
  position: relative;
  z-index: 2;
}

.cta-watermark {
  bottom: -10%;
  color: transparent;
  font-family: Arial, sans-serif;
  font-size: clamp(150px, 29vw, 400px);
  font-weight: 900;
  left: 2%;
  letter-spacing: -.1em;
  line-height: .75;
  opacity: .12;
  pointer-events: none;
  position: absolute;
  -webkit-text-stroke: 1px var(--etca-hero-ink);
}

/* Scroll reveal: content remains visible if JS or IntersectionObserver is unavailable. */
.etca-motion-ready [data-reveal] {
  opacity: 0;
  transform: translate3d(0, 34px, 0);
  transition: opacity .65s ease var(--reveal-delay, 0ms), transform .85s var(--etca-ease) var(--reveal-delay, 0ms);
}

.etca-motion-ready [data-reveal].is-revealed {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

.etca-motion-ready [data-reveal][data-tilt] {
  opacity: 0;
  transform: perspective(900px) rotateX(var(--tilt-x)) rotateY(var(--tilt-y)) translate3d(0, 34px, 0);
}

.etca-motion-ready [data-reveal][data-tilt].is-revealed {
  opacity: 1;
  transform: perspective(900px) rotateX(var(--tilt-x)) rotateY(var(--tilt-y)) translate3d(0, 0, 0);
}

/* Question bank */
.qb-intro {
  background: var(--etca-surface-2);
  border-left: 4px solid var(--etca-accent);
  color: var(--etca-muted);
  margin-bottom: 32px;
  padding: 20px 23px;
}

.qb-subjects-grid {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(auto-fill, minmax(245px, 1fr));
  margin-top: 28px;
}

.qb-subject-card,
.qb-paper-item {
  background: var(--etca-surface);
  border: 1px solid var(--etca-line);
  border-radius: 0;
  color: var(--etca-ink);
  transition: background-color .2s ease, border-color .2s ease, transform .25s var(--etca-ease);
}

.qb-subject-card {
  align-items: center;
  display: flex;
  gap: 14px;
  min-height: 88px;
  padding: 17px;
  text-decoration: none;
}

.qb-subject-card:hover,
.qb-paper-item:hover {
  background: var(--etca-surface-2);
  border-color: var(--etca-ink);
  color: var(--etca-ink);
  transform: translateY(-2px);
}

.qb-subject-icon,
.qb-paper-icon {
  align-items: center;
  background: var(--etca-accent);
  color: var(--etca-accent-ink);
  display: flex;
  flex: 0 0 auto;
  height: 42px;
  justify-content: center;
  width: 42px;
}

.qb-subject-info,
.qb-paper-info,
.qb-paper-detail {
  flex: 1;
  min-width: 0;
}

.qb-subject-name,
.qb-paper-title,
.qb-section-title {
  color: var(--etca-ink);
  font-weight: 750;
  margin: 0;
}

.qb-subject-name { font-size: 14px; line-height: 1.4; }
.qb-subject-count,
.qb-section-meta,
.qb-paper-type { color: var(--etca-muted); font-size: 10px; }
.qb-subject-count { margin: 4px 0 0; }
.qb-subject-arrow { color: var(--etca-line); }
.qb-subject-card:hover .qb-subject-arrow { color: var(--etca-ink); }
.qb-back-bar { margin-bottom: 22px; }
.qb-back-link,
.qb-breadcrumb a { color: var(--link-color); font-size: 12px; }

.qb-papers-header {
  border-bottom: 1px solid var(--etca-line);
  margin-bottom: 18px;
  padding-bottom: 15px;
}

.qb-section-title { font-size: 24px; }
.qb-section-meta { margin: 4px 0 0; }
.qb-papers-list { display: flex; flex-direction: column; gap: 8px; }

.qb-paper-item {
  align-items: center;
  display: flex;
  gap: 16px;
  justify-content: space-between;
  padding: 14px 16px;
}

.qb-paper-info { align-items: center; display: flex; gap: 13px; }
.qb-paper-title { font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.qb-paper-type { background: var(--etca-surface-2); display: inline-block; margin-top: 3px; padding: 1px 6px; }
.qb-paper-actions { flex: 0 0 auto; }

.qb-btn {
  align-items: center;
  border: 1px solid transparent;
  border-radius: 0;
  cursor: pointer;
  display: inline-flex;
  font-size: 11px;
  font-weight: 700;
  gap: 6px;
  justify-content: center;
  line-height: 1.3;
  min-height: 42px;
  padding: 9px 14px;
  text-decoration: none;
  transition: background-color .2s ease, border-color .2s ease, color .2s ease;
}

.qb-btn-primary { background: var(--etca-ink); color: var(--etca-surface); }
.qb-btn-primary:hover { background: var(--etca-accent); color: var(--etca-accent-ink); }
.qb-btn-secondary { background: var(--etca-surface); border-color: var(--etca-line); color: var(--etca-ink); }
.qb-btn-secondary:hover { background: var(--etca-surface-2); border-color: var(--etca-ink); color: var(--etca-ink); }

.qb-breadcrumb {
  align-items: center;
  color: var(--etca-muted);
  display: flex;
  flex-wrap: wrap;
  font-size: 11px;
  gap: 7px;
  margin-bottom: 16px;
}

.qb-breadcrumb-sep { color: var(--etca-line); }
.qb-paper-title-main { font-size: clamp(28px, 4vw, 48px); margin-bottom: 20px; }
.qb-paper-toolbar { display: flex; flex-wrap: wrap; gap: 8px; }

.qb-iframe-wrapper {
  background: #fff;
  border: 1px solid var(--etca-line);
  border-radius: 0;
  overflow: hidden;
  width: 100%;
}

#qb-paper-iframe { border: 0; display: block; min-height: 80vh; width: 100%; }

/* Search and footer */
.search-pop-overlay {
  background: rgba(7, 9, 8, .72);
  backdrop-filter: blur(12px);
}

.search-popup {
  background: var(--etca-surface);
  border: 1px solid var(--etca-line);
  border-radius: 0;
  box-shadow: none;
}

.search-header,
.search-result-container {
  border-color: var(--etca-line);
}

.search-input {
  color: var(--etca-ink);
}

.footer {
  background: transparent;
  color: var(--etca-muted);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 10px;
  letter-spacing: .03em;
  padding: 0 24px 36px;
}

.footer-inner {
  border-top: 1px solid var(--etca-line);
  margin: 0 auto;
  max-width: var(--etca-shell);
  padding: 28px 0 0;
  text-align: left;
  width: auto;
}

.footer a { color: var(--etca-muted); }
.footer a:hover { color: var(--etca-ink); }
.etca-footer-grid { display: grid; gap: 56px; grid-template-columns: 1.25fr 1fr .85fr; padding: 54px 0 46px; }
.etca-footer-brand > a { align-items: center; color: var(--etca-ink); display: inline-flex; font-size: 20px; gap: 10px; letter-spacing: .08em; }
.etca-footer-brand .etca-brand-symbol { height: 42px; padding: 0; width: 42px; }
.etca-footer-brand > p { color: var(--etca-muted); font-family: inherit; font-size: 13px; line-height: 1.7; margin: 24px 0 0; max-width: 390px; }
.etca-footer-nav > p, .etca-footer-meta > p { color: var(--etca-muted); font-size: 9px; letter-spacing: .16em; margin: 0 0 20px; }
.etca-footer-nav ul { display: grid; gap: 7px 22px; grid-template-columns: 1fr 1fr; list-style: none; margin: 0; padding: 0; }
.etca-footer-nav a { display: inline-flex; font-family: inherit; font-size: 13px; min-height: 30px; }
.etca-footer-meta { border-left: 1px solid var(--etca-line); padding-left: 32px; }
.etca-footer-meta strong { align-items: center; color: var(--etca-ink); display: flex; font-family: inherit; font-size: 15px; gap: 10px; }
.etca-footer-meta strong span { background: var(--etca-accent); border: 1px solid #739c20; border-radius: 50%; height: 9px; width: 9px; }
.etca-footer-meta > a { align-items: center; border-bottom: 1px solid var(--etca-line); display: flex; font-family: inherit; font-size: 12px; justify-content: space-between; margin-top: 32px; min-height: 44px; }
.etca-footer-bottom { align-items: center; border-top: 1px solid var(--etca-line); display: flex; flex-wrap: wrap; gap: 8px 22px; justify-content: space-between; padding: 22px 0 0; }
.etca-footer-support { margin-left: auto; }
.footer .beian { margin-top: 12px; }

@keyframes etca-orbit {
  to { transform: rotate(360deg); }
}

@keyframes etca-float {
  from { transform: translate(-50%, -52%); }
  to { transform: translate(-50%, -48%); }
}

@keyframes etca-scan {
  0%, 100% { opacity: 0; transform: translateY(-80px); }
  20%, 75% { opacity: .75; }
  60% { transform: translateY(380px); }
}

@keyframes etca-ticker {
  to { transform: translateX(-50%); }
}

@media (max-width: 1100px) {
  .header-inner { gap: 18px; }
  .etca-brand-copy small { display: none; }
  .menu .menu-item a { padding-inline: 8px; }
  .etca-weather-button { min-width: 64px; }
  .etca-weather-meta { display: none; }
  .home-hero-copy { padding-inline: 30px; }
  .hero-orbit-a { height: 280px; margin: -140px 0 0 -140px; width: 280px; }
  .hero-orbit-b { height: 380px; margin: -190px 0 0 -190px; width: 380px; }
  .hero-logo-core { height: 190px; width: 190px; }
  .hero-logo-core .institution-mark { height: 136px; width: 136px; }
}

@media (max-width: 900px) {
  .header-inner {
    flex-wrap: wrap;
    gap: 0;
    height: auto;
    min-height: 66px;
    padding: 0 18px;
  }

  .site-brand-container {
    flex: 1 1 auto;
    min-height: 66px;
    order: 1;
    width: auto;
  }

  .site-nav-toggle,
  .site-nav-right { display: flex; }
  .etca-header-actions { order: 2; }

  .site-nav-toggle .toggle,
  .site-nav-right .toggle {
    align-items: center;
    background: transparent;
    border: 0;
    color: var(--etca-ink);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    font: inherit;
    height: 44px;
    justify-content: center;
    padding: 0;
    width: 44px;
  }

  .site-nav-toggle .toggle .toggle-line {
    background: var(--etca-ink) !important;
    height: 2px;
    margin: 2px 0;
    width: 19px;
  }

  .site-nav {
    flex-basis: 100%;
    max-height: 0;
    order: 3;
    overflow: hidden;
    transition: max-height .32s var(--etca-ease), padding .32s var(--etca-ease);
  }

  .site-nav-on .site-nav {
    max-height: 520px;
    padding-bottom: 14px;
  }

  .main-menu {
    align-items: stretch;
    display: grid;
    gap: 0;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .menu .menu-item a {
    border-bottom: 1px solid var(--etca-line);
    font-size: 13px;
    min-height: 48px;
    padding: 17px 12px;
  }

  .menu .menu-item a::after { bottom: -1px; left: 12px; width: 30px; }
  .menu .menu-item-search { display: none; }

  .main-inner { padding: 34px 18px 68px; }
  .main-inner.etca-home { padding: 18px 18px 80px; }

  .home-hero {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    grid-template-rows: auto 430px auto;
    min-height: 0;
  }

  .hero-rail { display: none; }
  .home-hero-copy { grid-column: 1 / 13; grid-row: 1; max-width: 760px; padding: 64px 34px 42px; }
  .home-hero-art { border-left: 0; border-top: 1px solid rgba(255,255,255,.14); grid-column: 1 / 13; grid-row: 2; }
  .home-hero-stats { grid-column: 1 / 13; grid-row: 3; }
  .hero-copy-bottom { grid-template-columns: minmax(0, 500px); }
  .hero-code-card { bottom: 26px; }
  .hero-coordinate-a { top: 18px; }

  .home-manifesto { padding: 92px 0 88px; }
  .home-manifesto .section-index { grid-column: 1 / 4; }
  .home-manifesto > div { grid-column: 4 / 13; }
  .home-section { padding: 88px 0 94px; }
  .home-feature-card { min-height: 290px; }
  .home-journal-layout { grid-template-columns: 1fr; }
  .journal-list { margin-top: 18px; }
  .home-cta { min-height: 430px; }
  .home-cta h2 { grid-column: 3 / 12; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  .header-inner { padding: 0 12px; }
  .etca-brand-mark { height: 38px; width: 38px; }
  .etca-brand-symbol { height: 38px; width: 38px; }
  .main-inner { padding: 20px 12px 54px; }
  .main-inner.etca-home { padding: 10px 10px 60px; }

  .home-hero { grid-template-rows: auto 330px auto; }
  .home-hero-copy { padding: 45px 22px 34px; }
  .home-eyebrow { font-size: 8px; margin-bottom: 30px; }
  .home-hero h1 { font-size: clamp(48px, 15vw, 65px); line-height: .94; }
  .hero-title-accent { margin-left: 0; }
  .hero-copy-bottom { gap: 24px; margin-top: 28px; }
  .home-hero-lead { font-size: 14px; }
  .home-hero-actions { align-items: flex-start; flex-direction: column; gap: 18px; }
  .etca-button { min-height: 48px; }

  .hero-orbit-a { height: 220px; margin: -110px 0 0 -110px; width: 220px; }
  .hero-orbit-b { height: 290px; margin: -145px 0 0 -145px; width: 290px; }
  .hero-logo-core { height: 150px; width: 150px; }
  .hero-logo-core .institution-mark { height: 106px; width: 106px; }
  .hero-code-card { bottom: 16px; left: 14px; padding: 11px 12px; }
  .hero-code-card code { font-size: 9px; }
  .hero-coordinate { display: none; }

  .hero-stat { align-items: flex-start; flex-direction: column; gap: 5px; min-height: 92px; padding: 18px 14px; }
  .hero-stat strong { font-size: 25px; }
  .home-ticker { margin-top: 10px; }

  .home-manifesto,
  .home-section-heading {
    display: block;
  }

  .section-index,
  .home-manifesto .section-index,
  .home-section-heading .section-index {
    display: block;
    margin-bottom: 30px;
    padding: 0;
  }

  .home-manifesto { padding: 76px 4px 72px; }
  .home-manifesto h2,
  .home-section-heading h2,
  .home-cta h2 { font-size: clamp(40px, 12vw, 55px); }
  .home-manifesto > div > p { font-size: 14px; margin-top: 30px; }
  .home-section { padding: 72px 4px 78px; }
  .home-section-heading { margin-bottom: 36px; }
  .home-section-heading h2 { margin-bottom: 24px; }
  .home-section-heading > p:not(.section-index) { font-size: 13px; }

  .home-feature-grid { display: block; }
  .home-feature-card { margin-bottom: 10px; min-height: 255px; padding: 22px; transform: none; }
  .home-feature-card h3 { font-size: 36px; }
  .home-journal-layout { gap: 24px; }
  .journal-feature h3 { font-size: 28px; }
  .journal-row > a { grid-template-columns: 44px 1fr 18px; min-height: 98px; }

  .home-cta { display: block; margin-top: 10px; min-height: 430px; padding: 42px 24px; }
  .home-cta h2 { margin-top: 70px; }
  .home-cta .etca-button { margin-top: 42px; }

  .post-block,
  .flinks-block,
  .comments,
  .post-comments { padding: 28px 18px; }
  .post-header { margin-bottom: 30px; padding-bottom: 24px; }
  .post-title { font-size: 36px; }
  .post-body { font-size: 16px; line-height: 1.8; }
  .post-body table:not(.lntable) { display: block; overflow-x: auto; }
  .post-body .highlight { margin-inline: -8px; }
  .post-body .highlight .lntd:first-child { min-width: 40px; width: 40px; }

  .qb-subjects-grid { grid-template-columns: 1fr; }
  .qb-paper-item { align-items: flex-start; flex-direction: column; }
  .qb-paper-actions { display: flex; justify-content: flex-end; width: 100%; }
  .qb-paper-toolbar { align-items: stretch; flex-direction: column; }
  .qb-btn { width: 100%; }

  .tool-buttons { bottom: 10px; right: 10px; }
  .etca-weather-button { min-width: 60px; padding-inline: 8px; }
  .tool-buttons #goto-comments,
  .tool-buttons #goto-i18n-translate { display: none; }
  .footer { padding-inline: 16px; }
  .etca-footer-grid { gap: 38px; grid-template-columns: 1fr 1fr; }
  .etca-footer-brand { grid-column: 1 / 3; }
  .etca-footer-meta { padding-left: 24px; }
  .etca-footer-bottom { align-items: flex-start; flex-direction: column; }
  .etca-footer-support { margin-left: 0; }
}

@media (max-width: 640px) {
  .etca-footer-grid { display: block; padding: 42px 0 34px; }
  .etca-footer-brand, .etca-footer-nav, .etca-footer-meta { margin-bottom: 40px; }
  .etca-footer-meta { border-left: 0; border-top: 1px solid var(--etca-line); padding: 32px 0 0; }
  .etca-footer-nav ul { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media print {
  header.header, .tool-buttons, .etca-weather, .reading-progress-bar, .footer, .post-nav { display: none !important; }
  .main-inner, .main-inner > .post-block { border: 0; max-width: none; padding: 0; }
  .post-body { color: #111; font-size: 11pt; }
  .post-body a { color: #111; text-decoration: underline; }
}

@media (prefers-reduced-motion: reduce) {
  .etca-weather-button, .etca-weather-icon i { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
  }
  .etca-motion-ready [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }
  .etca-js .home-hero:not(.is-ready) .hero-title-line > span,
  .etca-js .home-hero:not(.is-ready) [data-hero-kicker],
  .etca-js .home-hero:not(.is-ready) [data-hero-copy] {
    opacity: 1 !important;
    transform: none !important;
  }
}

/* ================================================================
   ABOUT + ACTIVITIES / content-driven editorial pages
   ================================================================ */

.main-inner.etca-page-shell {
  max-width: none;
  padding: 18px 18px 110px;
  width: 100%;
}

.etca-page-shell .section-index {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .19em;
  text-transform: uppercase;
}

.story-hero {
  background: var(--etca-hero);
  color: var(--etca-hero-ink);
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  grid-template-rows: minmax(640px, 76vh) auto;
  margin: 0 auto;
  max-width: var(--etca-shell);
  min-height: 760px;
  overflow: hidden;
  position: relative;
}

.story-hero-grid {
  background-image:
    linear-gradient(rgba(255,255,255,.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.055) 1px, transparent 1px);
  background-size: 56px 56px;
  inset: 0;
  mask-image: linear-gradient(90deg, #000 30%, transparent 88%);
  opacity: .75;
  pointer-events: none;
  position: absolute;
}

.story-hero::before {
  background: var(--etca-accent);
  content: "";
  height: 5px;
  left: 0;
  position: absolute;
  top: 0;
  width: 100%;
  z-index: 3;
}

.story-hero-copy {
  display: flex;
  flex-direction: column;
  grid-column: 1 / 8;
  grid-row: 1;
  justify-content: space-between;
  min-width: 0;
  padding: 70px 44px 54px;
  position: relative;
  z-index: 2;
}

.story-kicker {
  align-items: center;
  color: #aab3a7;
  display: flex;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 9px;
  font-weight: 700;
  gap: 10px;
  letter-spacing: .17em;
  margin: 0;
}

.story-kicker span {
  background: var(--etca-accent);
  border-radius: 50%;
  box-shadow: 0 0 0 5px rgba(200,255,61,.12);
  height: 6px;
  width: 6px;
}

.story-hero h1 {
  color: var(--etca-hero-ink);
  font-family: Arial, "Noto Sans SC", sans-serif;
  font-size: clamp(72px, 8.2vw, 126px);
  font-weight: 900;
  letter-spacing: -.075em;
  line-height: .82;
  margin: auto 0;
  text-transform: uppercase;
}

.story-title-line {
  display: block;
  overflow: hidden;
  padding: .05em .08em .08em 0;
}

.story-title-line > span {
  display: block;
  transform-origin: left bottom;
}

.story-title-line.is-accent > span {
  color: var(--etca-accent);
  font-family: Georgia, "Noto Serif SC", serif;
  font-style: italic;
  font-weight: 500;
  letter-spacing: -.08em;
  margin-left: .28em;
}

.story-hero-summary {
  align-items: end;
  border-top: 1px solid rgba(255,255,255,.18);
  display: grid;
  gap: 24px;
  grid-template-columns: minmax(0, 1fr) auto;
  padding-top: 24px;
}

.story-hero-summary p {
  color: #d9dfd4;
  font-size: 15px;
  line-height: 1.75;
  margin: 0;
  max-width: 520px;
}

.story-hero-summary small {
  color: #758075;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 8px;
  letter-spacing: .11em;
  white-space: nowrap;
}

.story-stats {
  border-top: 1px solid rgba(255,255,255,.16);
  display: grid;
  grid-column: 1 / 13;
  grid-row: 2;
  grid-template-columns: repeat(3, 1fr);
  min-height: 112px;
  position: relative;
  z-index: 4;
}

.story-stat {
  align-items: center;
  border-right: 1px solid rgba(255,255,255,.16);
  display: flex;
  gap: 16px;
  justify-content: center;
  padding: 22px;
}

.story-stat:last-child { border-right: 0; }
.story-stat strong { color: var(--etca-hero-ink); font-size: 30px; font-weight: 900; letter-spacing: -.05em; }
.story-stat span { color: #879087; font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 8px; letter-spacing: .12em; text-transform: uppercase; }

.about-signal,
.activity-scope {
  border-left: 1px solid rgba(255,255,255,.15);
  grid-column: 8 / 13;
  grid-row: 1;
  overflow: hidden;
  position: relative;
  transform: translate3d(calc(var(--pointer-x, 0) * 5px), calc(var(--pointer-y, 0) * 5px), 0);
  transition: transform .55s var(--etca-ease);
  z-index: 1;
}

.about-signal::before,
.activity-scope::before {
  background: radial-gradient(circle at 50% 50%, rgba(200,255,61,.14), transparent 54%);
  content: "";
  inset: 0;
  position: absolute;
}

.about-signal-map {
  fill: none;
  height: min(92%, 560px);
  left: 50%;
  position: absolute;
  stroke: rgba(255,255,255,.19);
  stroke-width: 1;
  top: 50%;
  transform: translate(-50%, -50%);
  width: min(92%, 560px);
}

.about-signal-map > circle:first-child { stroke: rgba(200,255,61,.5); stroke-dasharray: 3 10; }
.about-signal-map > circle:nth-child(2) { stroke-dasharray: 1 7; }
.about-signal-map .signal-node { fill: var(--etca-accent); stroke: none; transform-box: fill-box; transform-origin: center; }
.signal-node-a { animation: etca-node-pulse 2.4s ease-in-out infinite; }
.signal-node-b { animation: etca-node-pulse 2.4s .8s ease-in-out infinite; }
.signal-node-c { animation: etca-node-pulse 2.4s 1.6s ease-in-out infinite; }

@keyframes etca-node-pulse {
  0%, 100% { opacity: .45; transform: scale(.72); }
  50% { opacity: 1; transform: scale(1.3); }
}

.about-signal-mark {
  align-items: center;
  background: var(--etca-accent);
  border-radius: 50%;
  box-shadow: 0 0 0 18px rgba(200,255,61,.07), 0 0 80px rgba(200,255,61,.15);
  display: flex;
  height: 148px;
  justify-content: center;
  left: 50%;
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 148px;
}

.about-signal-mark .etca-brand-symbol { color: #11170a; height: 86px; width: 86px; }
.about-signal-mark .etca-brand-symbol__signal { fill: #11170a; }

.about-signal-label,
.scope-coordinate {
  color: #747f74;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 8px;
  letter-spacing: .13em;
  position: absolute;
}
.about-signal-label.label-a { left: 24px; top: 25px; }
.about-signal-label.label-b { right: 24px; top: 25px; }
.about-signal-label.label-c { bottom: 25px; right: 24px; }

.page-story-section,
.page-story-cta,
.about-principles {
  margin-left: auto;
  margin-right: auto;
  max-width: var(--etca-shell);
}

.page-story-section { padding: 132px 12px 140px; }

.page-story-heading {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  margin-bottom: 82px;
}

.page-story-heading .section-index { grid-column: 1 / 4; margin: 12px 0 0; }
.page-story-heading h2 {
  color: var(--etca-ink);
  font-family: Arial, "Noto Sans SC", sans-serif;
  font-size: clamp(52px, 6vw, 88px);
  font-weight: 900;
  grid-column: 4 / 13;
  letter-spacing: -.065em;
  line-height: .98;
  margin: 0;
}

.page-story-heading.split-heading h2 { grid-column: 5 / 13; }

.about-origin-layout {
  display: grid;
  gap: 72px;
  grid-template-columns: repeat(12, minmax(0, 1fr));
}

.about-origin-copy { grid-column: 1 / 5; padding-right: 24px; }
.about-origin-copy > span {
  border-bottom: 1px solid var(--etca-line);
  display: block;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .15em;
  margin-bottom: 28px;
  padding-bottom: 14px;
  text-transform: uppercase;
}

.page-prose p { color: var(--etca-muted); font-size: 15px; line-height: 1.9; margin: 0 0 1.4em; }
.page-prose p:first-child { color: var(--etca-ink); font-size: 19px; line-height: 1.65; }

.about-timeline { grid-column: 5 / 13; padding-left: 54px; position: relative; }
.about-timeline-progress { background: var(--etca-line); bottom: 18px; left: 0; position: absolute; top: 18px; width: 2px; }
.about-timeline-progress span { background: var(--etca-accent); display: block; height: calc(var(--story-progress, 0) * 100%); transition: height .15s linear; width: 100%; }

.about-timeline-item {
  border-top: 1px solid var(--etca-line);
  display: grid;
  gap: 28px;
  grid-template-columns: 92px 1fr;
  min-height: 154px;
  padding: 28px 0;
  position: relative;
  transition: color .4s ease, opacity .4s ease;
}

.about-timeline-item::before {
  background: var(--etca-canvas);
  border: 2px solid var(--etca-line);
  border-radius: 50%;
  content: "";
  height: 12px;
  left: -61px;
  position: absolute;
  top: 35px;
  transition: background .3s ease, border-color .3s ease, transform .3s ease;
  width: 12px;
}
.about-timeline-item.is-story-active::before { background: var(--etca-accent); border-color: var(--etca-accent); transform: scale(1.25); }
.about-timeline-item time { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 12px; font-weight: 800; letter-spacing: .08em; }
.about-timeline-item h3 { color: var(--etca-ink); font-size: 25px; letter-spacing: -.04em; margin: 0 0 10px; }
.about-timeline-item p { color: var(--etca-muted); font-size: 14px; margin: 0; max-width: 560px; }

.about-values { border-top: 1px solid var(--etca-line); }
.about-values-grid { display: grid; gap: 10px; grid-template-columns: repeat(3, 1fr); }
.about-value-card {
  --tilt-x: 0deg;
  --tilt-y: 0deg;
  background: var(--etca-surface);
  border: 1px solid var(--etca-line);
  display: flex;
  flex-direction: column;
  min-height: 430px;
  overflow: hidden;
  padding: 30px;
  position: relative;
  transform: perspective(900px) rotateX(var(--tilt-x)) rotateY(var(--tilt-y));
  transition: border-color .3s ease, transform .25s ease, background .3s ease;
}
.about-value-card::after { background: radial-gradient(circle at var(--glow-x,50%) var(--glow-y,50%), rgba(200,255,61,.16), transparent 42%); content: ""; inset: 0; opacity: 0; pointer-events: none; position: absolute; transition: opacity .3s ease; }
.about-value-card:hover { border-color: color-mix(in srgb, var(--etca-accent) 70%, var(--etca-line)); }
.about-value-card:hover::after { opacity: 1; }
.about-value-card header { display: flex; justify-content: space-between; position: relative; z-index: 1; }
.about-value-card header span { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 11px; font-weight: 800; }
.about-value-card header small { color: var(--etca-muted); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 8px; letter-spacing: .13em; }
.about-value-card h3 { color: var(--etca-ink); font-family: Georgia, "Noto Serif SC", serif; font-size: clamp(60px, 6vw, 92px); font-style: italic; font-weight: 500; letter-spacing: -.08em; line-height: .9; margin: auto 0 34px; position: relative; z-index: 1; }
.about-value-card p { border-top: 1px solid var(--etca-line); color: var(--etca-muted); font-size: 14px; margin: 0; padding-top: 20px; position: relative; z-index: 1; }

.about-principles { background: var(--etca-ink); color: var(--etca-canvas); overflow: hidden; }
.about-principles-track { align-items: center; animation: etca-ticker 30s linear infinite; display: flex; min-height: 88px; white-space: nowrap; width: max-content; }
.about-principles span { font-family: Arial, sans-serif; font-size: 20px; font-weight: 900; letter-spacing: -.02em; padding: 0 30px; }
.about-principles i { background: var(--etca-accent); border-radius: 50%; height: 7px; width: 7px; }

.about-capabilities { padding-bottom: 150px; }
.about-capability-grid { border-left: 1px solid var(--etca-line); border-top: 1px solid var(--etca-line); display: grid; grid-template-columns: repeat(2, 1fr); }
.about-capability-card {
  align-items: start;
  border-bottom: 1px solid var(--etca-line);
  border-right: 1px solid var(--etca-line);
  display: grid;
  gap: 24px;
  grid-template-columns: 54px 1fr;
  min-height: 240px;
  padding: 34px;
  transition: background .3s ease;
}
.about-capability-card:hover { background: var(--etca-surface); }
.capability-icon { align-items: center; background: var(--etca-ink); color: var(--etca-canvas); display: flex; height: 48px; justify-content: center; width: 48px; }
.capability-icon i { font-size: 17px; }
.about-capability-card h3 { color: var(--etca-ink); font-size: 25px; letter-spacing: -.04em; margin: 3px 0 12px; }
.about-capability-card p { color: var(--etca-muted); font-size: 14px; margin: 0; }
.about-capability-card ul { display: flex; flex-wrap: wrap; gap: 7px; grid-column: 2; list-style: none; margin: 10px 0 0; padding: 0; }
.about-capability-card li { border: 1px solid var(--etca-line); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 7px; letter-spacing: .11em; padding: 5px 8px; }

/* Activities */
.activity-scope-ring { border: 1px solid rgba(255,255,255,.22); border-radius: 50%; left: 50%; position: absolute; top: 50%; }
.activity-scope-ring.ring-a { animation: etca-orbit 20s linear infinite; height: 360px; margin: -180px; width: 360px; }
.activity-scope-ring.ring-b { border-color: rgba(200,255,61,.43); border-style: dashed; height: 246px; margin: -123px; width: 246px; animation: etca-orbit 14s linear infinite reverse; }
.activity-scope-axis { background: rgba(255,255,255,.15); left: 50%; position: absolute; top: 50%; }
.activity-scope-axis.axis-x { height: 1px; transform: translateX(-50%); width: 88%; }
.activity-scope-axis.axis-y { height: 88%; transform: translateY(-50%); width: 1px; }
.activity-scope-core { align-items: center; background: var(--etca-accent); border-radius: 50%; color: #11170a; display: flex; flex-direction: column; height: 168px; justify-content: center; left: 50%; position: absolute; top: 50%; transform: translate(-50%,-50%); width: 168px; }
.activity-scope-core strong { font-size: 35px; font-weight: 900; letter-spacing: -.06em; line-height: 1; }
.activity-scope-core span { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 7px; letter-spacing: .13em; margin-top: 8px; }
.scope-dot { background: var(--etca-accent); border-radius: 50%; height: 9px; position: absolute; width: 9px; }
.scope-dot.dot-a { left: calc(50% - 4px); top: calc(50% - 184px); }
.scope-dot.dot-b { left: calc(50% + 116px); top: calc(50% + 114px); }
.scope-dot.dot-c { left: calc(50% - 126px); top: calc(50% + 114px); }
.scope-coordinate.coordinate-a { left: 22px; top: 24px; }
.scope-coordinate.coordinate-b { bottom: 24px; right: 22px; }

.activity-heading { align-items: end; }
.activity-heading .page-prose { grid-column: 9 / 13; }
.activity-heading .page-prose p:first-child { font-size: 15px; }

.activity-filter-bar {
  align-items: center;
  backdrop-filter: blur(16px);
  background: color-mix(in srgb, var(--etca-canvas) 92%, transparent);
  border-bottom: 1px solid var(--etca-line);
  border-top: 1px solid var(--etca-line);
  display: flex;
  gap: 22px;
  justify-content: space-between;
  margin-bottom: 34px;
  padding: 14px 0;
  position: sticky;
  top: 72px;
  z-index: 30;
}
.activity-filter-list { display: flex; flex-wrap: wrap; gap: 7px; }
.activity-filter { background: transparent; border: 1px solid var(--etca-line); color: var(--etca-muted); cursor: pointer; font-size: 12px; font-weight: 700; min-height: 42px; padding: 8px 17px; transition: background .25s ease, border-color .25s ease, color .25s ease; }
.activity-filter:hover { border-color: var(--etca-ink); color: var(--etca-ink); }
.activity-filter.is-active { background: var(--etca-ink); border-color: var(--etca-ink); color: var(--etca-canvas); }
.activity-result-count { color: var(--etca-muted); flex: 0 0 auto; font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 8px; letter-spacing: .1em; margin: 0; text-transform: uppercase; }

.activity-track-grid { display: grid; gap: 10px; grid-auto-flow: dense; grid-template-columns: repeat(12, minmax(0,1fr)); }
.activity-track-card {
  --tilt-x: 0deg;
  --tilt-y: 0deg;
  background: var(--etca-surface);
  border: 1px solid var(--etca-line);
  display: flex;
  flex-direction: column;
  grid-column: span 4;
  min-height: 470px;
  overflow: hidden;
  padding: 27px;
  position: relative;
  transform: perspective(900px) rotateX(var(--tilt-x)) rotateY(var(--tilt-y));
  transition: opacity .2s ease, transform .25s ease, border-color .25s ease, background .25s ease;
}
.activity-track-card:nth-child(1), .activity-track-card:nth-child(2) { grid-column: span 6; min-height: 430px; }
.activity-track-card:nth-child(6), .activity-track-card:nth-child(7) { grid-column: span 6; min-height: 430px; }
.activity-track-card:hover { background: color-mix(in srgb, var(--etca-surface) 88%, var(--etca-accent)); border-color: color-mix(in srgb, var(--etca-accent) 70%, var(--etca-line)); }
.activity-track-card[hidden] { display: none; }
.activity-track-card.is-filtering-out { opacity: 0; transform: scale(.965); }
.activity-track-card.is-filtering-in { animation: activity-card-in .38s var(--etca-ease) both; }
@keyframes activity-card-in { from { opacity: 0; transform: translateY(18px) scale(.98); } to { opacity: 1; transform: none; } }
.activity-track-card header { align-items: center; border-bottom: 1px solid var(--etca-line); display: flex; justify-content: space-between; padding-bottom: 17px; }
.activity-track-number { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 11px; font-weight: 800; }
.activity-track-cadence { color: var(--etca-muted); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 7px; letter-spacing: .11em; }
.activity-track-icon { align-items: center; background: var(--etca-ink); color: var(--etca-canvas); display: flex; height: 54px; justify-content: center; margin: 34px 0 auto; width: 54px; }
.activity-track-icon i { font-size: 18px; }
.activity-track-card > small { color: var(--etca-muted); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 7px; letter-spacing: .12em; margin-top: 30px; }
.activity-track-card h3 { color: var(--etca-ink); font-family: Arial, "Noto Sans SC", sans-serif; font-size: clamp(34px, 3.4vw, 52px); font-weight: 900; letter-spacing: -.065em; line-height: 1; margin: 7px 0 16px; }
.activity-track-card > p { color: var(--etca-muted); font-size: 13px; margin: 0 0 22px; }
.activity-track-card ul { border-top: 1px solid var(--etca-line); display: grid; gap: 7px; grid-template-columns: repeat(2,1fr); list-style: none; margin: 0; padding: 17px 0 0; }
.activity-track-card li { color: var(--etca-muted); font-size: 10px; padding-left: 12px; position: relative; }
.activity-track-card li::before { background: var(--etca-accent); content: ""; height: 5px; left: 0; position: absolute; top: .65em; width: 5px; }

.activity-process { border-top: 1px solid var(--etca-line); }
.activity-process-list { border-top: 1px solid var(--etca-line); list-style: none; margin: 0 0 0 33.333%; padding: 0; }
.activity-process-list li { align-items: start; border-bottom: 1px solid var(--etca-line); display: grid; gap: 36px; grid-template-columns: 76px 1fr; min-height: 154px; padding: 30px 0; transition: padding .3s var(--etca-ease); }
.activity-process-list li:hover { padding-left: 18px; }
.activity-process-list > li > span { color: var(--etca-muted); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 10px; font-weight: 800; }
.activity-process-list h3 { color: var(--etca-ink); font-size: 28px; letter-spacing: -.045em; margin: 0 0 8px; }
.activity-process-list p { color: var(--etca-muted); font-size: 14px; margin: 0; max-width: 600px; }

.page-story-cta {
  background: var(--etca-ink);
  color: var(--etca-canvas);
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(12,minmax(0,1fr));
  min-height: 560px;
  overflow: hidden;
  padding: 56px;
  position: relative;
}
.page-story-cta::after { border: 1px solid color-mix(in srgb, var(--etca-accent) 62%, transparent); border-radius: 50%; content: ""; height: 480px; position: absolute; right: -120px; top: -150px; width: 480px; }
.page-story-cta > .section-index { color: color-mix(in srgb, var(--etca-canvas) 60%, transparent); grid-column: 1 / 4; margin: 8px 0 0; position: relative; z-index: 1; }
.page-story-cta > div { align-self: end; grid-column: 4 / 12; position: relative; z-index: 1; }
.page-story-cta h2 { color: var(--etca-canvas); font-family: Arial, "Noto Sans SC", sans-serif; font-size: clamp(58px, 7vw, 102px); font-weight: 900; letter-spacing: -.07em; line-height: .9; margin: 0; }
.page-story-cta > div > p { color: color-mix(in srgb, var(--etca-canvas) 70%, transparent); font-size: 15px; margin: 35px 0 30px; max-width: 560px; }

.etca-js .story-hero:not(.is-ready) .story-title-line > span { opacity: 0; transform: translateY(115%) skewY(5deg); }
.etca-js .story-hero:not(.is-ready) [data-hero-kicker],
.etca-js .story-hero:not(.is-ready) [data-hero-copy] { opacity: 0; transform: translateY(20px); }
.story-hero.is-ready .story-title-line > span { opacity: 1; transform: none; transition: opacity .55s ease, transform .9s var(--etca-ease); }
.story-hero.is-ready .story-title-line:nth-child(2) > span { transition-delay: .1s; }
.story-hero.is-ready [data-hero-kicker] { opacity: 1; transform: none; transition: opacity .5s .08s ease, transform .7s .08s var(--etca-ease); }
.story-hero.is-ready [data-hero-copy] { opacity: 1; transform: none; transition: opacity .55s .24s ease, transform .75s .24s var(--etca-ease); }

@media (max-width: 980px) {
  .main-inner.etca-page-shell { padding: 14px 14px 90px; }
  .story-hero { grid-template-rows: auto 470px auto; }
  .story-hero-copy { grid-column: 1 / 13; min-height: 650px; padding: 64px 36px 46px; }
  .about-signal, .activity-scope { border-left: 0; border-top: 1px solid rgba(255,255,255,.15); grid-column: 1 / 13; grid-row: 2; }
  .story-stats { grid-row: 3; }
  .page-story-section { padding: 105px 8px 115px; }
  .page-story-heading h2, .page-story-heading.split-heading h2 { grid-column: 4 / 13; }
  .about-origin-copy { grid-column: 1 / 6; }
  .about-timeline { grid-column: 6 / 13; }
  .about-values-grid { grid-template-columns: 1fr; }
  .about-value-card { min-height: 330px; }
  .about-value-card h3 { margin-top: 80px; }
  .activity-heading .page-prose { grid-column: 4 / 13; margin-top: 20px; }
  .activity-track-card, .activity-track-card:nth-child(n) { grid-column: span 6; min-height: 450px; }
  .activity-process-list { margin-left: 25%; }
}

@media (max-width: 640px) {
  .main-inner.etca-page-shell { padding: 10px 10px 64px; }
  .story-hero { grid-template-rows: auto 330px auto; min-height: 0; }
  .story-hero-copy { min-height: 540px; padding: 46px 22px 34px; }
  .story-hero h1 { font-size: clamp(50px, 15vw, 66px); line-height: .88; }
  .story-title-line.is-accent > span { margin-left: 0; }
  .story-hero-summary { align-items: start; display: flex; flex-direction: column; gap: 16px; }
  .story-hero-summary p { font-size: 13px; }
  .story-stats { min-height: 95px; }
  .story-stat { align-items: flex-start; flex-direction: column; gap: 4px; padding: 14px 10px; }
  .story-stat strong { font-size: 21px; }
  .story-stat span { font-size: 6px; }
  .about-signal-map { height: 330px; width: 330px; }
  .about-signal-mark { height: 105px; width: 105px; }
  .about-signal-mark .etca-brand-symbol { height: 62px; width: 62px; }
  .activity-scope-ring.ring-a { height: 250px; margin: -125px; width: 250px; }
  .activity-scope-ring.ring-b { height: 174px; margin: -87px; width: 174px; }
  .activity-scope-core { height: 116px; width: 116px; }
  .activity-scope-core strong { font-size: 25px; }
  .scope-dot { display: none; }

  .page-story-section { padding: 78px 4px 86px; }
  .page-story-heading { display: block; margin-bottom: 46px; }
  .page-story-heading .section-index { margin: 0 0 28px; }
  .page-story-heading h2 { font-size: clamp(42px, 12vw, 56px); }
  .about-origin-layout { display: block; }
  .about-origin-copy { padding: 0; }
  .about-timeline { margin-top: 58px; padding-left: 34px; }
  .about-timeline-item { gap: 16px; grid-template-columns: 62px 1fr; min-height: 145px; }
  .about-timeline-item::before { left: -40px; }
  .about-timeline-item h3 { font-size: 21px; }
  .about-value-card { min-height: 315px; padding: 23px; }
  .about-value-card h3 { font-size: 58px; margin: auto 0 28px; }
  .about-capability-grid { display: block; border: 0; }
  .about-capability-card { border-left: 1px solid var(--etca-line); grid-template-columns: 48px 1fr; min-height: 220px; padding: 25px 20px; }
  .about-capability-card ul { grid-column: 1 / 3; }
  .about-principles-track { min-height: 72px; }
  .about-principles span { font-size: 16px; padding: 0 21px; }

  .activity-heading .page-prose { margin-top: 30px; }
  .activity-filter-bar { align-items: stretch; display: block; margin-inline: -4px; padding: 12px 4px; position: static; }
  .activity-filter-list { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 6px; scrollbar-width: none; }
  .activity-filter-list::-webkit-scrollbar { display: none; }
  .activity-filter { flex: 0 0 auto; font-size: 11px; min-height: 40px; padding: 7px 14px; }
  .activity-result-count { margin-top: 10px; }
  .activity-track-grid { display: block; }
  .activity-track-card, .activity-track-card:nth-child(n) { margin-bottom: 10px; min-height: 430px; padding: 23px; transform: none; }
  .activity-track-card h3 { font-size: 38px; }
  .activity-process-list { margin: 0; }
  .activity-process-list li { gap: 18px; grid-template-columns: 42px 1fr; min-height: 145px; }
  .activity-process-list li:hover { padding-left: 0; }

  .page-story-cta { display: block; min-height: 520px; padding: 38px 24px; }
  .page-story-cta > .section-index { margin: 0; }
  .page-story-cta > div { margin-top: 100px; }
  .page-story-cta h2 { font-size: clamp(48px, 13vw, 62px); }
  .page-story-cta::after { height: 300px; right: -150px; width: 300px; }
}

@media (prefers-reduced-motion: reduce) {
  .etca-js .story-hero:not(.is-ready) .story-title-line > span,
  .etca-js .story-hero:not(.is-ready) [data-hero-kicker],
  .etca-js .story-hero:not(.is-ready) [data-hero-copy] { opacity: 1 !important; transform: none !important; }
  .about-principles-track, .activity-scope-ring, .signal-node { animation: none !important; }
}

/* Content platform / newsroom, outcomes, resources and contact */
.main-inner.content-platform-shell {
  max-width: var(--etca-shell);
  padding: 24px 24px 110px;
}

.platform-hero {
  background: var(--etca-hero);
  color: var(--etca-hero-ink);
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  min-height: 650px;
  overflow: hidden;
  position: relative;
}

.platform-hero-grid {
  background-image: linear-gradient(rgba(255,255,255,.065) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.065) 1px, transparent 1px);
  background-size: 88px 88px;
  inset: 0;
  pointer-events: none;
  position: absolute;
}

.platform-hero-copy {
  align-self: center;
  grid-column: 1 / 9;
  padding: 76px 5.5vw;
  position: relative;
  z-index: 1;
}

.platform-hero-copy .story-kicker { color: var(--etca-accent); }
.platform-hero-copy h1 {
  color: var(--etca-hero-ink);
  font-family: Arial, "Noto Sans SC", sans-serif;
  font-size: clamp(64px, 7.4vw, 112px);
  font-weight: 900;
  letter-spacing: -.075em;
  line-height: .88;
  margin: 42px 0 36px;
  max-width: 960px;
}
.platform-hero-copy > p:last-child { color: rgba(241,244,233,.68); font-size: 17px; line-height: 1.75; margin: 0; max-width: 610px; }

.platform-hero-index {
  align-self: end;
  border-left: 1px solid rgba(255,255,255,.15);
  grid-column: 9 / 13;
  min-height: 100%;
  padding: 76px 42px 52px;
  position: relative;
  z-index: 1;
}
.platform-hero-index span { color: var(--etca-accent); display: block; font-family: Arial, sans-serif; font-size: clamp(92px, 9vw, 148px); font-weight: 900; letter-spacing: -.09em; line-height: .8; margin-top: 170px; }
.platform-hero-index small { display: block; font-family: monospace; font-size: 10px; letter-spacing: .2em; margin-top: 30px; }
.platform-hero-index p { border-top: 1px solid rgba(255,255,255,.15); color: rgba(241,244,233,.5); font-family: monospace; font-size: 10px; margin: 90px 0 0; padding-top: 18px; text-transform: uppercase; }

.platform-section { border-bottom: 1px solid var(--etca-line); padding: 120px 8px 130px; }
.platform-section-heading { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); margin-bottom: 70px; }
.platform-section-heading .story-kicker { grid-column: 1 / 4; }
.platform-section-heading h2 { font-family: Arial, "Noto Sans SC", sans-serif; font-size: clamp(48px, 5.4vw, 78px); font-weight: 900; grid-column: 4 / 13; letter-spacing: -.065em; line-height: .94; margin: 0; }

.news-lead-grid { display: grid; gap: 14px; grid-template-columns: 1.15fr .85fr; }
.news-lead-card { background: var(--etca-ink); color: var(--etca-canvas); display: flex; flex-direction: column; justify-content: space-between; min-height: 610px; overflow: hidden; padding: 34px; position: relative; text-decoration: none; }
.news-lead-card::after { background: var(--etca-accent); bottom: 0; content: ""; height: 7px; left: 0; position: absolute; transform: scaleX(.16); transform-origin: left; transition: transform .5s var(--etca-ease); width: 100%; }
.news-lead-card:hover { color: var(--etca-canvas); }
.news-lead-card:hover::after { transform: scaleX(1); }
.news-card-meta { align-items: center; display: flex; font-family: monospace; font-size: 10px; justify-content: space-between; letter-spacing: .12em; opacity: .62; }
.news-sequence { color: var(--etca-accent); font-family: monospace; font-size: 10px; letter-spacing: .16em; }
.news-lead-card h3 { color: inherit; font-size: clamp(42px, 4.5vw, 68px); letter-spacing: -.06em; line-height: .98; margin: 22px 0; }
.news-lead-card p { color: inherit; max-width: 610px; }
.news-card-arrow { align-items: center; border: 1px solid rgba(255,255,255,.3); border-radius: 50%; display: flex; height: 48px; justify-content: center; margin-left: auto; width: 48px; }
.news-list { border-top: 1px solid var(--etca-line); }
.news-list-row { align-items: start; border-bottom: 1px solid var(--etca-line); color: var(--etca-ink); display: grid; gap: 20px; grid-template-columns: 58px 1fr 22px; min-height: 148px; padding: 24px 4px; text-decoration: none; transition: padding .25s var(--etca-ease), background .25s ease; }
.news-list-row:hover { background: color-mix(in srgb, var(--etca-accent) 12%, transparent); color: var(--etca-ink); padding-inline: 14px; }
.news-list-row time { font-family: monospace; font-size: 11px; }
.news-list-row h3 { font-size: 22px; line-height: 1.25; margin: 0 0 10px; }
.news-list-row p { color: var(--etca-muted); font-size: 13px; line-height: 1.55; margin: 0; }
.bulletin-grid { display: grid; gap: 12px; grid-template-columns: repeat(2, 1fr); margin-left: 25%; }
.bulletin-card { border: 1px solid var(--etca-line); min-height: 300px; padding: 30px; }
.bulletin-card > p:first-child { display: flex; font-family: monospace; font-size: 10px; justify-content: space-between; letter-spacing: .12em; }
.bulletin-card > p:first-child span { color: var(--etca-muted); }
.bulletin-card h3 { font-size: 32px; letter-spacing: -.04em; margin: 78px 0 18px; }
.bulletin-card > p:last-child { color: var(--etca-muted); margin: 0; }
.channel-grid, .service-grid { display: grid; gap: 1px; grid-template-columns: repeat(3, 1fr); }
.channel-card, .service-grid article { background: var(--etca-surface-2); min-height: 270px; padding: 30px; }
.channel-card > i, .service-grid article > i { color: #4b741e; font-size: 28px; }
[data-theme="dark"] .channel-card > i, [data-theme="dark"] .service-grid article > i { color: var(--etca-accent); }
.channel-card h3, .service-grid h3 { font-size: 25px; margin: 70px 0 16px; }
.channel-card p, .service-grid p { color: var(--etca-muted); font-size: 14px; margin: 0; }

.outcome-orbit { align-items: center; display: flex; flex-direction: column; grid-column: 9 / 13; justify-content: center; overflow: hidden; position: relative; z-index: 1; }
.outcome-ring { border: 1px solid rgba(255,255,255,.18); border-radius: 50%; left: 50%; position: absolute; top: 50%; }
.outcome-ring.ring-a { height: 410px; margin: -205px; width: 410px; }
.outcome-ring.ring-b { border-color: rgba(200,255,61,.4); border-style: dashed; height: 270px; margin: -135px; width: 270px; }
.outcome-orbit b { color: var(--etca-accent); font-size: 44px; letter-spacing: -.05em; position: relative; }
.outcome-orbit small { font-family: monospace; font-size: 9px; letter-spacing: .18em; margin-top: 14px; position: relative; text-align: center; }
.outcome-stats { grid-column: 1 / 13; grid-row: 2; }
.outcome-stats > div { align-items: baseline; border-right: 1px solid rgba(255,255,255,.15); display: flex; gap: 14px; padding: 22px 28px; }
.outcome-stats strong { color: var(--etca-accent); font-size: 28px; }
.outcome-stats span { color: rgba(241,244,233,.55); font-family: monospace; font-size: 9px; letter-spacing: .1em; text-transform: uppercase; }
.platform-filter-bar { align-items: center; border-block: 1px solid var(--etca-line); display: flex; justify-content: space-between; margin-bottom: 24px; padding: 12px 0; }
.platform-filter-list { display: flex; gap: 8px; }
.platform-filter, .resource-filter { background: transparent; border: 1px solid var(--etca-line); color: var(--etca-muted); cursor: pointer; font-size: 12px; font-weight: 700; min-height: 44px; padding: 9px 18px; }
.platform-filter.is-active, .resource-filter.is-active { background: var(--etca-ink); border-color: var(--etca-ink); color: var(--etca-canvas); }
.platform-result-count { color: var(--etca-muted); font-family: monospace; font-size: 11px; margin: 0; }
.outcome-grid { display: grid; gap: 10px; grid-template-columns: repeat(4, 1fr); }
.outcome-card { border: 1px solid var(--etca-line); min-height: 390px; padding: 25px; transition: background .25s ease, border-color .25s ease, transform .3s var(--etca-ease); }
.outcome-card:hover { background: var(--etca-surface-2); border-color: var(--etca-ink); transform: translateY(-5px); }
.outcome-card-top { align-items: center; display: flex; font-family: monospace; font-size: 11px; justify-content: space-between; }
.outcome-card-top i { color: #4b741e; font-size: 22px; }
[data-theme="dark"] .outcome-card-top i { color: var(--etca-accent); }
.outcome-eyebrow { color: var(--etca-muted); font-family: monospace; font-size: 9px; letter-spacing: .12em; margin: 82px 0 12px; text-transform: uppercase; }
.outcome-card h3 { font-size: 26px; letter-spacing: -.04em; line-height: 1.15; margin: 0 0 20px; }
.outcome-card > strong { color: #365b13; display: block; font-size: 18px; margin-bottom: 10px; }
[data-theme="dark"] .outcome-card > strong { color: var(--etca-accent); }
.outcome-card > p:last-child { color: var(--etca-muted); font-size: 13px; margin: 0; }
.outcome-principles ol { list-style: none; margin: 0 0 0 25%; padding: 0; }
.outcome-principles li { align-items: start; border-top: 1px solid var(--etca-line); display: grid; gap: 30px; grid-template-columns: 80px 1fr; min-height: 190px; padding: 32px 0; }
.outcome-principles li > span { font-family: monospace; font-size: 11px; }
.outcome-principles h3 { font-size: 42px; margin: 0 0 12px; }
.outcome-principles p { color: var(--etca-muted); margin: 0; max-width: 580px; }

.platform-hero-contact { min-height: 570px; }
.contact-status { align-self: end; border-left: 1px solid rgba(255,255,255,.15); grid-column: 9 / 13; min-height: 100%; padding: 390px 42px 48px; position: relative; z-index: 1; }
.contact-status > span { background: #ffb84d; border-radius: 50%; display: inline-block; height: 11px; margin-bottom: 20px; width: 11px; }
.contact-status.is-open > span { animation: etca-node-pulse 2.4s ease-in-out infinite; background: var(--etca-accent); box-shadow: 0 0 0 7px rgba(200,255,61,.12); }
.contact-status strong { font-size: 20px; }
.contact-status p { color: rgba(241,244,233,.55); font-family: monospace; font-size: 10px; margin: 8px 0 0; }
.contact-channel-grid { display: grid; gap: 10px; grid-template-columns: repeat(4, 1fr); }
.contact-channel-card { border: 1px solid var(--etca-line); display: flex; flex-direction: column; min-height: 340px; padding: 26px; }
.contact-channel-card > i { color: #4b741e; font-size: 25px; }
[data-theme="dark"] .contact-channel-card > i { color: var(--etca-accent); }
.contact-channel-card > p { color: var(--etca-muted); font-family: monospace; font-size: 10px; letter-spacing: .1em; margin: 64px 0 8px; text-transform: uppercase; }
.contact-channel-card h3 { font-size: 24px; margin: 0 0 auto; overflow-wrap: anywhere; }
.contact-channel-action { align-items: center; background: none; border: 0; border-top: 1px solid var(--etca-line); color: var(--etca-ink); cursor: pointer; display: flex; font: inherit; font-size: 12px; justify-content: space-between; min-height: 48px; padding: 14px 0 0; text-align: left; text-decoration: none; width: 100%; }
.contact-channel-action:hover { color: #365b13; }
[data-theme="dark"] .contact-channel-action:hover { color: var(--etca-accent); }
.join-steps { list-style: none; margin: 0 0 0 25%; padding: 0; }
.join-steps li { border-top: 1px solid var(--etca-line); display: grid; gap: 28px; grid-template-columns: 70px 1fr; min-height: 165px; padding: 28px 0; }
.join-steps li > span { font-family: monospace; font-size: 11px; }
.join-steps h3 { font-size: 30px; margin: 0 0 10px; }
.join-steps p { color: var(--etca-muted); margin: 0; max-width: 680px; }
.service-hours { border: 1px solid var(--etca-line); display: grid; grid-template-columns: 1fr 1fr; margin-top: 12px; }
.service-hours > div { display: flex; flex-direction: column; gap: 8px; min-height: 120px; padding: 26px; }
.service-hours > div + div { border-left: 1px solid var(--etca-line); }
.service-hours span { color: var(--etca-muted); font-family: monospace; font-size: 9px; letter-spacing: .12em; }
.faq-list { margin-left: 25%; }
.faq-list details { border-top: 1px solid var(--etca-line); }
.faq-list details:last-child { border-bottom: 1px solid var(--etca-line); }
.faq-list summary { align-items: center; cursor: pointer; display: grid; font-size: 21px; font-weight: 700; gap: 18px; grid-template-columns: 50px 1fr 24px; list-style: none; min-height: 92px; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary span { font-family: monospace; font-size: 10px; font-weight: 400; }
.faq-list summary i { transition: transform .25s var(--etca-ease); }
.faq-list details[open] summary i { transform: rotate(45deg); }
.faq-list details > p { color: var(--etca-muted); margin: 0 40px 28px 68px; max-width: 660px; }

.resource-radar { align-items: center; display: flex; flex-direction: column; grid-column: 9 / 13; justify-content: center; overflow: hidden; position: relative; z-index: 1; }
.resource-radar span { border: 1px solid rgba(255,255,255,.16); border-radius: 50%; height: 130px; position: absolute; width: 130px; }
.resource-radar span:nth-child(2) { height: 270px; width: 270px; }
.resource-radar span:nth-child(3) { border-color: rgba(200,255,61,.35); border-style: dashed; height: 410px; width: 410px; }
.resource-radar b { color: var(--etca-accent); font-size: 48px; letter-spacing: -.06em; position: relative; }
.resource-radar small { font-family: monospace; font-size: 9px; letter-spacing: .16em; margin-top: 8px; position: relative; text-align: center; }
.resource-search-panel { background: var(--etca-surface-2); margin-bottom: 24px; padding: 24px; }
.resource-search-panel > label, .qb-search-panel > label { display: block; font-size: 12px; font-weight: 700; margin-bottom: 9px; }
.resource-search-box, .qb-search-box { align-items: center; background: var(--etca-surface); border: 1px solid var(--etca-line); display: grid; gap: 12px; grid-template-columns: 24px 1fr auto; min-height: 60px; padding: 0 18px; }
.resource-search-box:focus-within, .qb-search-box:focus-within { border-color: var(--etca-ink); box-shadow: 0 0 0 3px color-mix(in srgb, var(--etca-accent) 55%, transparent); }
.resource-search-box input, .qb-search-box input { background: transparent; border: 0; color: var(--etca-ink); font: inherit; font-size: 16px; height: 56px; outline: 0; width: 100%; }
.resource-search-box kbd { border: 1px solid var(--etca-line); border-radius: 3px; color: var(--etca-muted); font-family: monospace; padding: 1px 7px; }
.resource-filter-row { align-items: center; display: flex; gap: 16px; justify-content: space-between; margin-top: 16px; }
.resource-filter-list { display: flex; flex: 1; gap: 7px; max-width: 100%; min-width: 0; overflow-x: auto; padding: 3px 0 8px; scrollbar-width: thin; width: 100%; }
.resource-filter { flex: 0 0 auto; font-size: 11px; }
.resource-filter-row > p { color: var(--etca-muted); flex: 0 0 auto; font-family: monospace; font-size: 10px; margin: 0; }
.resource-group { border-top: 1px solid var(--etca-line); padding: 38px 0 62px; }
.resource-group-title { align-items: baseline; display: flex; font-size: clamp(28px, 3vw, 42px); gap: 14px; letter-spacing: -.04em; margin: 0 0 28px; }
.resource-group-count { color: var(--etca-muted); font-family: monospace; font-size: 10px; font-weight: 400; }
.resource-group ul { margin: 0; padding-left: 0; }
.resource-group li { border-bottom: 1px solid color-mix(in srgb, var(--etca-line) 70%, transparent); list-style: none; overflow-wrap: anywhere; padding: 13px 8px 13px 22px; position: relative; word-break: break-word; }
.resource-group li::before { background: #4b741e; content: ""; height: 5px; left: 3px; position: absolute; top: 24px; width: 5px; }
[data-theme="dark"] .resource-group li::before { background: var(--etca-accent); }
.resource-group li li { margin-left: 18px; }
.resource-group a { font-weight: 700; overflow-wrap: anywhere; text-decoration-thickness: 1px; text-underline-offset: 3px; word-break: break-word; }
.resource-group p { color: var(--etca-muted); }
.resource-empty, .qb-empty-state, .platform-empty { border: 1px dashed var(--etca-line); padding: 64px 24px; text-align: center; }
.resource-empty i, .qb-empty-state i, .platform-empty i { color: #4b741e; font-size: 30px; }
.resource-source[hidden] { display: none !important; }

.qb-search-panel { background: var(--etca-surface-2); margin: 28px 0; padding: 22px; }
.qb-search-panel > p { color: var(--etca-muted); font-family: monospace; font-size: 10px; margin: 12px 0 0; }
.qb-search-box { grid-template-columns: 24px 1fr; }
.qb-subject-card[hidden] { display: none !important; }
.qb-empty-state h2 { font-size: 26px; margin: 18px 0 7px; }
.qb-empty-state p { color: var(--etca-muted); margin: 0; }
.qb-btn { min-height: 44px; }

.main-inner.archive-platform { max-width: var(--etca-shell); padding: 24px 24px 100px; }
.archive-platform-header { background: var(--etca-hero); color: var(--etca-hero-ink); min-height: 430px; padding: 70px 6vw; position: relative; }
.archive-platform-header .story-kicker { color: var(--etca-accent); }
.archive-platform-header h1 { color: inherit; font-family: Arial, "Noto Sans SC", sans-serif; font-size: clamp(66px, 8vw, 118px); font-weight: 900; letter-spacing: -.075em; line-height: .9; margin: 62px 0 22px; }
.archive-platform-header > p:last-of-type { color: rgba(241,244,233,.62); margin: 0; }
.archive-platform-header > div { align-items: baseline; bottom: 48px; display: flex; gap: 12px; position: absolute; right: 6vw; }
.archive-platform-header strong { color: var(--etca-accent); font-size: 48px; letter-spacing: -.06em; }
.archive-platform-header span { font-family: monospace; font-size: 9px; letter-spacing: .12em; }
.archive-platform-list { background: transparent; box-shadow: none; margin: 0; padding: 90px 6vw; }

.platform-cta { margin-top: 0; }
.platform-cta > div { align-self: end; }
.platform-cta > div > p { margin: 0 0 20px; }
.platform-cta .etca-button { align-self: end; grid-column: 10 / 13; justify-self: end; position: relative; z-index: 2; }

@media (max-width: 980px) {
  .main-inner.content-platform-shell { padding: 14px 14px 90px; }
  .platform-hero-copy { grid-column: 1 / 13; min-height: 600px; padding: 70px 38px; }
  .platform-hero-index, .outcome-orbit, .contact-status, .resource-radar { border-left: 0; border-top: 1px solid rgba(255,255,255,.15); grid-column: 1 / 13; min-height: 330px; padding: 48px 38px; }
  .platform-hero-index span { margin-top: 0; }
  .platform-hero-index p { margin-top: 50px; }
  .outcome-stats { grid-row: auto; }
  .news-lead-grid { grid-template-columns: 1fr; }
  .news-lead-card { min-height: 520px; }
  .bulletin-grid, .outcome-principles ol, .join-steps, .faq-list { margin-left: 0; }
  .outcome-grid, .contact-channel-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .main-inner.content-platform-shell { padding: 10px 10px 66px; }
  .platform-hero { display: block; min-height: 0; }
  .platform-hero-copy { min-height: 520px; padding: 48px 22px 38px; }
  .platform-hero-copy h1 { font-size: clamp(50px, 15vw, 66px); margin: 34px 0 28px; }
  .platform-hero-copy > p:last-child { font-size: 14px; }
  .platform-hero-index, .outcome-orbit, .contact-status, .resource-radar { min-height: 280px; padding: 38px 22px; }
  .platform-hero-index span { font-size: 92px; }
  .outcome-stats { display: grid; grid-template-columns: repeat(3, 1fr); }
  .outcome-stats > div { align-items: flex-start; flex-direction: column; gap: 3px; padding: 15px 10px; }
  .outcome-stats strong { font-size: 22px; }
  .outcome-stats span { font-size: 7px; }
  .platform-section { padding: 78px 4px 88px; }
  .platform-section-heading { display: block; margin-bottom: 44px; }
  .platform-section-heading .story-kicker { margin-bottom: 28px; }
  .platform-section-heading h2 { font-size: clamp(40px, 12vw, 54px); }
  .news-lead-card { min-height: 470px; padding: 24px; }
  .news-list-row { min-height: 130px; }
  .bulletin-grid, .channel-grid, .service-grid, .outcome-grid, .contact-channel-grid, .service-hours { display: block; }
  .bulletin-card, .channel-card, .service-grid article, .outcome-card, .contact-channel-card { margin-bottom: 9px; }
  .bulletin-card { min-height: 270px; padding: 24px; }
  .outcome-card { min-height: 350px; }
  .platform-filter-bar { align-items: stretch; display: block; }
  .platform-filter-list { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 8px; }
  .platform-filter { flex: 0 0 auto; min-height: 44px; }
  .platform-result-count { margin-top: 8px; }
  .outcome-principles li, .join-steps li { gap: 14px; grid-template-columns: 46px 1fr; }
  .outcome-principles h3 { font-size: 34px; }
  .contact-channel-card { min-height: 290px; }
  .service-hours > div + div { border-left: 0; border-top: 1px solid var(--etca-line); }
  .faq-list summary { font-size: 17px; gap: 10px; grid-template-columns: 32px 1fr 20px; min-height: 84px; }
  .faq-list details > p { margin: 0 20px 28px 42px; }
  .resource-search-panel, .qb-search-panel { padding: 16px; }
  .resource-search-box kbd { display: none; }
  .resource-filter-row { align-items: stretch; display: block; }
  .resource-filter-list { contain: inline-size; }
  .resource-filter-row > p { margin-top: 7px; }
  .resource-group { padding-block: 32px 48px; }
  .resource-group li { padding-right: 0; }
  .activity-filter { min-height: 44px; }
  .etca-brand { min-height: 44px; }
  .platform-cta .etca-button { margin-top: 30px; }
  .main-inner.archive-platform { padding: 10px 10px 66px; }
  .archive-platform-header { min-height: 420px; padding: 48px 22px; }
  .archive-platform-header h1 { font-size: 58px; margin-top: 80px; }
  .archive-platform-header > div { bottom: 38px; left: 22px; right: auto; }
  .archive-platform-list { padding: 64px 16px; }
}

@media (prefers-reduced-motion: reduce) {
  .contact-status.is-open > span { animation: none; }
  .news-lead-card::after, .outcome-card, .faq-list summary i { transition: none; }
}