:root {
  color-scheme: dark;
  --bg: #080b0f;
  --surface: #0e141b;
  --surface-2: #141c25;
  --card: #101820;
  --text: #f3f7fb;
  --muted: #a9b7c6;
  --soft: #d9e5ef;
  --line: rgba(255, 255, 255, .12);
  --line-strong: rgba(255, 255, 255, .22);
  --brand: #2ad8c9;
  --brand-2: #d8ff61;
  --accent: #ffb454;
  --ink: #061014;
  --danger: #ff6b6b;
  --shadow: 0 18px 42px rgba(0, 0, 0, .26);
  --radius: 8px;
  --container: 1200px;
  --page-pad: clamp(18px, 5vw, 48px);
}

[data-theme=light] {
  color-scheme: light;
  --bg: #f5f7f8;
  --surface: #ffffff;
  --surface-2: #edf3f5;
  --card: #ffffff;
  --text: #101820;
  --muted: #596879;
  --soft: #24313d;
  --line: rgba(16, 24, 32, .13);
  --line-strong: rgba(16, 24, 32, .22);
  --shadow: 0 16px 36px rgba(16, 24, 32, .1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  text-size-adjust: 100%;
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.68;
  background: var(--bg);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(42, 216, 201, .08), transparent 360px),
    linear-gradient(90deg, rgba(255, 180, 84, .06), transparent 44%, rgba(216, 255, 97, .05));
}

a {
  color: inherit;
  text-decoration: none;
}

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

img {
  display: block;
  max-width: 100%;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

:focus-visible {
  outline: 3px solid rgba(42, 216, 201, .58);
  outline-offset: 3px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 180;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand), var(--brand-2), var(--accent));
}

/* Header */
.site-header.nav {
  position: sticky;
  top: 0;
  z-index: 120;
  display: block;
  width: 100%;
  padding: 0 24px;
  background: rgba(7, 11, 16, .96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

[data-theme=light] .site-header.nav {
  background: rgba(255, 255, 255, .96);
}

.site-header .nav-shell {
  position: relative;
  display: grid;
  grid-template-columns: minmax(210px, auto) minmax(340px, 1fr) minmax(250px, 360px) 48px;
  gap: 18px;
  align-items: center;
  width: 100%;
  max-width: var(--container);
  min-height: 76px;
  margin: 0 auto;
  padding: 10px 0;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  color: var(--text);
  font: 900 23px/1 "Space Grotesk", Inter, sans-serif;
  letter-spacing: 0;
  white-space: nowrap;
}

.logo span {
  position: relative;
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  width: 42px;
  height: 42px;
  overflow: hidden;
  color: transparent;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, .86), transparent 25%),
    linear-gradient(135deg, var(--brand), #6ea8ff 54%, var(--brand-2));
  border: 1px solid rgba(255, 255, 255, .34);
  border-radius: var(--radius);
}

.logo span::before {
  content: "";
  position: absolute;
  inset: 9px;
  border: 3px solid var(--ink);
  border-right-color: transparent;
  border-radius: 50%;
  transform: rotate(-28deg);
}

.logo span::after {
  content: "";
  position: absolute;
  right: 9px;
  bottom: 13px;
  width: 15px;
  height: 3px;
  background: var(--ink);
  border-radius: 999px;
}

.logo strong {
  min-width: 0;
  overflow: hidden;
  font: inherit;
  text-overflow: ellipsis;
}

.site-header .nav-links {
  position: static;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-width: 0;
}

.site-header .nav-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 13px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
  line-height: 1;
  border: 1px solid transparent;
  border-radius: var(--radius);
  white-space: nowrap;
}

.site-header .nav-links a:hover,
.site-header .nav-links a.active {
  color: var(--text);
  background: color-mix(in srgb, var(--brand) 12%, transparent);
  border-color: color-mix(in srgb, var(--brand) 38%, var(--line));
}

.nav-search-form {
  display: flex;
  align-items: center;
  width: 100%;
  min-width: 0;
  height: 44px;
  color: var(--muted);
  background: color-mix(in srgb, var(--surface-2) 70%, transparent);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.nav-search-form:focus-within {
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  border-color: color-mix(in srgb, var(--brand) 58%, var(--line));
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand) 15%, transparent);
}

.nav-search-icon {
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin-left: 14px;
  fill: none;
  stroke: currentColor;
}

.nav-search-form input {
  width: 100%;
  min-width: 0;
  height: 100%;
  padding: 0 14px 0 10px;
  color: var(--text);
  font-size: 14px;
  font-weight: 650;
  background: transparent;
  border: 0;
  outline: 0;
}

.nav-search-form input::placeholder,
.searchbox::placeholder,
.hero-search input::placeholder,
.newsletter-form input::placeholder,
.newsletter-page-form input::placeholder {
  color: color-mix(in srgb, var(--muted) 74%, transparent);
}

.theme-toggle,
.menu-toggle {
  display: inline-grid;
  place-items: center;
  width: 48px;
  min-width: 48px;
  height: 48px;
  min-height: 48px;
  padding: 0 !important;
  color: var(--text);
  background: color-mix(in srgb, var(--surface-2) 76%, transparent);
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: none;
  transition: background .18s ease, border-color .18s ease, color .18s ease;
}

.theme,
.menu {
  font: inherit;
}

.theme-toggle:hover,
.menu-toggle:hover {
  color: var(--text);
  background: color-mix(in srgb, var(--brand) 12%, var(--surface-2));
  border-color: color-mix(in srgb, var(--brand) 45%, var(--line));
}

.theme-toggle::before,
.theme-toggle::after {
  content: none !important;
}

.theme-icon {
  display: none;
  width: 21px;
  height: 21px;
  color: currentColor;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
}

html:not([data-theme=light]) .theme-icon-moon,
[data-theme=light] .theme-icon-sun {
  display: block;
}

html:not([data-theme=light]) .theme-toggle {
  color: var(--brand-2);
}

[data-theme=light] .theme-toggle {
  color: #3f566b;
}

.menu-toggle {
  position: relative;
  display: none;
  gap: 0;
  overflow: hidden;
}

.menu-line {
  position: absolute;
  top: 50%;
  left: 50%;
  display: block;
  width: 22px;
  height: 2px;
  background: currentColor;
  border-radius: 999px;
  transform-origin: center;
  transition: transform .18s ease, opacity .18s ease;
}

.menu-line:nth-child(1) {
  transform: translate(-50%, -8px);
}

.menu-line:nth-child(2) {
  transform: translate(-50%, -50%);
}

.menu-line:nth-child(3) {
  transform: translate(-50%, 6px);
}

.menu-toggle[aria-expanded="true"] .menu-line:nth-child(1) {
  transform: translate(-50%, -50%) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-line:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] .menu-line:nth-child(3) {
  transform: translate(-50%, -50%) rotate(-45deg);
}

/* Buttons and shared controls */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 18px;
  color: var(--ink);
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  border: 1px solid transparent;
  border-radius: var(--radius);
  box-shadow: 0 12px 24px rgba(42, 216, 201, .16);
}

.btn:hover {
  color: var(--ink);
  filter: brightness(1.04);
}

.btn.ghost {
  color: var(--text);
  background: rgba(255, 255, 255, .08);
  border-color: var(--line-strong);
  box-shadow: none;
}

.btn.text-link {
  color: var(--text);
  background: transparent;
  border-color: transparent;
  box-shadow: none;
}

.btn.text-link::after {
  content: "->";
  margin-left: 8px;
}

.lead {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  font-size: 20px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--brand);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .11em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 18px;
  height: 2px;
  background: currentColor;
}

.muted {
  color: var(--muted);
}

/* Homepage */
.home-redesign {
  overflow: hidden;
}

.home-featured,
.home-topics,
.newsletter-preferences-section {
  position: relative;
}

.home-hero,
.home-hero-modern,
.evidence-hero {
  position: relative;
  display: grid;
  align-items: end;
  min-height: calc(100svh - 76px);
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero-bg,
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(1.05) contrast(1.04);
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(8, 11, 15, .96), rgba(8, 11, 15, .82) 46%, rgba(8, 11, 15, .45)),
    linear-gradient(0deg, rgba(8, 11, 15, .98), rgba(8, 11, 15, .24) 58%, rgba(8, 11, 15, .72));
}

[data-theme=light] .hero-overlay {
  background:
    linear-gradient(90deg, rgba(245, 247, 248, .98), rgba(245, 247, 248, .86) 50%, rgba(245, 247, 248, .5)),
    linear-gradient(0deg, rgba(245, 247, 248, .98), rgba(245, 247, 248, .32) 58%, rgba(245, 247, 248, .78));
}

.evidence-hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 390px);
  gap: clamp(24px, 5vw, 56px);
  align-items: end;
  width: min(100%, calc(var(--container) + 96px));
  margin: 0 auto;
  padding: clamp(58px, 8vw, 112px) var(--page-pad) clamp(46px, 7vw, 84px);
}

.hero-content {
  position: relative;
}

.hero-kicker-row,
.hero-actions,
.cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 6px 10px;
  color: var(--ink);
  font-size: 12px;
  font-weight: 900;
  background: var(--brand-2);
  border-radius: var(--radius);
}

.hero-copy h1 {
  max-width: 940px;
  margin: 18px 0;
  font: 900 clamp(48px, 6.3vw, 88px)/.94 "Space Grotesk", Inter, sans-serif;
  letter-spacing: 0;
}

.hero-copy .lead {
  color: color-mix(in srgb, var(--soft) 88%, transparent);
}

.hero-search {
  width: min(100%, 780px);
  margin-top: 32px;
}

.evidence-search {
  width: min(100%, 780px);
}

.hero-search label {
  display: block;
  margin-bottom: 8px;
  color: var(--soft);
  font-size: 14px;
  font-weight: 850;
}

.hero-search-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  padding: 8px;
  background: rgba(255, 255, 255, .1);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  backdrop-filter: blur(14px);
}

.hero-search input,
.searchbox {
  width: 100%;
  min-height: 50px;
  padding: 0 16px;
  color: var(--text);
  font-size: 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.hero-actions {
  margin-top: 22px;
}

.hero-brief {
  display: grid;
  gap: 14px;
  padding: 24px;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.hero-brief span,
.workflow-rail span,
.newsletter-card span {
  width: max-content;
  padding: 5px 8px;
  color: var(--ink);
  font-size: 12px;
  font-weight: 950;
  background: var(--brand-2);
  border-radius: var(--radius);
}

.hero-brief h2 {
  margin: 0;
  color: var(--text);
  font: 900 29px/1.08 "Space Grotesk", Inter, sans-serif;
  letter-spacing: 0;
}

.hero-brief ul {
  display: grid;
  gap: 10px;
  margin: 0;
  padding-left: 18px;
  color: var(--soft);
}

.hero-brief a {
  color: var(--brand);
  font-weight: 850;
}

.home-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  width: min(calc(100% - 36px), var(--container));
  margin: 28px auto 0;
  overflow: hidden;
  text-align: center;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.home-stats div {
  min-height: 118px;
  padding: 24px;
  background: color-mix(in srgb, var(--surface) 92%, var(--bg));
}

.home-stats strong {
  display: block;
  margin-bottom: 7px;
  color: var(--text);
  font: 900 34px/1 "Space Grotesk", Inter, sans-serif;
}

.home-stats span {
  color: var(--muted);
  font-size: 14px;
  font-weight: 750;
}

.home-section {
  width: min(calc(100% - 36px), var(--container));
  margin: 0 auto;
  padding: 74px 0;
}

.home-section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 430px);
  gap: 28px;
  align-items: end;
  margin-bottom: 28px;
}

.home-section-head h2,
.home-cta h2 {
  margin: 10px 0 0;
  color: var(--text);
  font: 900 clamp(36px, 4.4vw, 56px)/1 "Space Grotesk", Inter, sans-serif;
  letter-spacing: 0;
}

.home-section-head p,
.home-cta p {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
}

.home-workflow {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.workflow-rail,
.topic-board {
  display: grid;
  gap: 14px;
}

.workflow-rail {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.workflow-rail article,
.topic-board a,
.home-cta {
  background: color-mix(in srgb, var(--surface) 90%, transparent);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.workflow-rail article {
  display: grid;
  gap: 12px;
  padding: 22px;
}

.workflow-rail h3,
.newsletter-card h3 {
  margin: 0;
  color: var(--text);
  font: 850 23px/1.1 "Space Grotesk", Inter, sans-serif;
  letter-spacing: 0;
}

.workflow-rail p,
.newsletter-card p,
.card p,
.article p,
.footer p {
  margin: 0;
  color: var(--muted);
}

.topic-board {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.topic-board a {
  display: grid;
  gap: 14px;
  min-height: 178px;
  padding: 22px;
}

.topic-board span {
  color: var(--brand);
  font: 900 25px/1.05 "Space Grotesk", Inter, sans-serif;
}

.topic-board strong {
  align-self: end;
  color: var(--soft);
  font-size: 14px;
  line-height: 1.45;
}

.home-cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 420px);
  gap: 24px;
  align-items: end;
  margin-bottom: 72px;
  padding: 30px;
  background:
    linear-gradient(135deg, rgba(42, 216, 201, .13), rgba(255, 180, 84, .08) 52%, rgba(216, 255, 97, .1)),
    color-mix(in srgb, var(--surface-2) 86%, transparent);
}

.cta-links {
  display: grid;
  gap: 10px;
}

.cta-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 48px;
  padding: 0 14px;
  color: var(--text);
  font-weight: 850;
  background: color-mix(in srgb, var(--bg) 36%, transparent);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.cta-links a::after {
  content: "->";
  color: var(--brand);
}

/* Sections, grids, and cards */
.section {
  width: min(100%, calc(var(--container) + 96px));
  margin: 0 auto;
  padding: 70px var(--page-pad);
}

main > .section:first-child {
  padding-top: 58px;
  padding-bottom: 44px;
}

.section h1 {
  max-width: 920px;
  margin: 10px 0 14px;
  color: var(--text);
  font: 900 clamp(40px, 5vw, 64px)/1 "Space Grotesk", Inter, sans-serif;
  letter-spacing: 0;
}

.section h2,
.section-head h2 {
  margin: 10px 0 0;
  color: var(--text);
  font: 900 clamp(34px, 4vw, 48px)/1 "Space Grotesk", Inter, sans-serif;
  letter-spacing: 0;
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 430px);
  gap: 28px;
  align-items: end;
  margin-bottom: 28px;
}

.section-head p {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.feature-grid {
  grid-auto-flow: dense;
}

.card {
  display: grid;
  min-width: 0;
  overflow: hidden;
  color: inherit;
  background: color-mix(in srgb, var(--surface) 90%, transparent);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}

.card:hover {
  color: var(--text);
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--brand) 45%, var(--line));
  box-shadow: 0 18px 40px rgba(0, 0, 0, .22);
}

.card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  filter: saturate(1.04) contrast(1.02);
}

.featured-card {
  grid-column: span 2;
  grid-row: span 2;
}

.featured-card img {
  aspect-ratio: 16 / 8;
}

.card-body {
  display: grid;
  gap: 8px;
  padding: 20px;
}

.card h3 {
  margin: 0;
  color: var(--text);
  font: 850 23px/1.12 "Space Grotesk", Inter, sans-serif;
  letter-spacing: 0;
}

.featured-card h3 {
  font-size: 34px;
}

.newsletter-related .card {
  padding: 24px;
}

.newsletter-related .card h3 {
  margin-bottom: 8px;
}

.search-panel {
  width: min(100%, 760px);
  margin-top: 24px;
  padding: 10px;
  background: color-mix(in srgb, var(--surface) 90%, transparent);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

/* Article pages */
.article {
  width: min(100%, calc(var(--container) + 96px));
  margin: 0 auto;
  padding: 38px var(--page-pad) 58px;
}

.breadcrumbs,
.meta {
  color: var(--muted);
  font-size: 14px;
}

.breadcrumbs {
  margin-bottom: 18px;
}

.breadcrumbs a {
  color: var(--soft);
}

.article-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, .85fr);
  gap: 28px;
  align-items: end;
  overflow: hidden;
  margin-bottom: 30px;
  padding: 30px;
  background:
    linear-gradient(135deg, rgba(42, 216, 201, .12), rgba(255, 180, 84, .06) 50%, rgba(216, 255, 97, .08)),
    color-mix(in srgb, var(--surface) 90%, transparent);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.article-hero > :not(.hero-image) {
  position: relative;
  z-index: 1;
  grid-column: 1;
}

.article-hero h1 {
  max-width: 840px;
  margin: 10px 0 0;
  color: var(--text);
  font: 900 clamp(38px, 5vw, 58px)/1 "Space Grotesk", Inter, sans-serif;
  letter-spacing: 0;
}

.article-hero .lead {
  margin-top: 14px;
  color: color-mix(in srgb, var(--soft) 82%, transparent);
}

.article-hero .meta {
  margin-top: 16px;
}

.hero-image {
  position: relative;
  z-index: 1;
  grid-column: 2;
  grid-row: 1 / span 6;
  align-self: stretch;
  margin: 0;
}

.hero-image img {
  width: 100%;
  height: 100%;
  min-height: 280px;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid rgba(255, 255, 255, .16);
  border-radius: var(--radius);
}

.article-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 24px;
  align-items: start;
}

.article-box,
.toc {
  background: color-mix(in srgb, var(--surface) 90%, transparent);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.article-box {
  min-width: 0;
  padding: 30px;
  overflow-x: auto;
}

.article h2 {
  margin: 38px 0 10px;
  color: var(--text);
  font: 850 31px/1.12 "Space Grotesk", Inter, sans-serif;
  letter-spacing: 0;
}

.article h2:first-child {
  margin-top: 0;
}

.article p + p {
  margin-top: 14px;
}

.article ul {
  padding-left: 22px;
}

.article li {
  margin: 8px 0;
}

.fact-list {
  display: grid;
  gap: 10px;
}

.toc {
  position: sticky;
  top: 98px;
  height: max-content;
  padding: 18px;
  box-shadow: none;
}

.toc strong {
  display: block;
  margin-bottom: 8px;
}

.toc a {
  display: block;
  margin: 8px 0;
  color: var(--muted);
  font-size: 14px;
}

.related {
  display: grid;
  gap: 10px;
}

.related a {
  color: var(--brand);
  font-weight: 750;
}

.faq details {
  margin: 12px 0;
  padding: 16px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.table {
  width: 100%;
  border-collapse: collapse;
}

.table th,
.table td {
  padding: 14px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}

.notice {
  padding: 16px 18px;
  color: var(--muted);
  background: color-mix(in srgb, var(--brand) 10%, var(--surface));
  border-left: 4px solid var(--brand);
  border-radius: var(--radius);
}

/* Newsletter page and footer signup */
.newsletter-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, .85fr);
  gap: 26px;
  align-items: stretch;
  width: min(100%, calc(var(--container) + 96px));
  margin: 0 auto;
  padding: 64px var(--page-pad) 38px;
}

.newsletter-copy,
.newsletter-panel,
.newsletter-card,
.newsletter-preferences {
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.newsletter-copy {
  position: relative;
  min-height: 460px;
  overflow: hidden;
  padding: clamp(26px, 4vw, 48px);
}

.newsletter-copy::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(42, 216, 201, .16), transparent 42%),
    linear-gradient(315deg, rgba(255, 180, 84, .14), transparent 46%);
  pointer-events: none;
}

.newsletter-copy > * {
  position: relative;
}

.newsletter-copy h1 {
  max-width: 850px;
  margin: 12px 0 0;
  color: var(--text);
  font: 900 clamp(42px, 6vw, 78px)/.96 "Space Grotesk", Inter, sans-serif;
  letter-spacing: 0;
}

.newsletter-copy .lead {
  margin-top: 18px;
}

.newsletter-panel {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 28px;
  background:
    linear-gradient(180deg, rgba(216, 255, 97, .11), transparent),
    color-mix(in srgb, var(--surface-2) 82%, transparent);
}

.newsletter-panel h2,
.newsletter-preferences h2 {
  margin: 0;
  color: var(--text);
  font: 900 34px/1.08 "Space Grotesk", Inter, sans-serif;
  letter-spacing: 0;
}

.newsletter-form,
.newsletter-page-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  padding: 8px;
  background: color-mix(in srgb, var(--bg) 52%, transparent);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.newsletter-page-form {
  max-width: 680px;
  margin-top: 28px;
}

.newsletter-form input,
.newsletter-page-form input {
  width: 100%;
  min-height: 48px;
  padding: 0 12px;
  color: var(--text);
  background: transparent;
  border: 0;
  outline: 0;
}

.newsletter-form.is-loading {
  opacity: .82;
}

.newsletter-form .btn:disabled {
  cursor: wait;
  opacity: .76;
}

.newsletter-status {
  grid-column: 1 / -1;
  min-height: 20px;
  margin: 0 4px 2px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.35;
}

.newsletter-status[data-state="success"] {
  color: var(--brand);
}

.newsletter-status[data-state="error"] {
  color: #ffb4a3;
}

.newsletter-note {
  max-width: 660px;
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.check-list {
  display: grid;
  gap: 12px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 30px;
  color: var(--soft);
}

.check-list li::before {
  content: "";
  position: absolute;
  top: .55em;
  left: 0;
  width: 14px;
  height: 8px;
  border-left: 3px solid var(--brand);
  border-bottom: 3px solid var(--brand);
  transform: rotate(-45deg);
}

.newsletter-section {
  padding-top: 44px;
}

.newsletter-card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.newsletter-card {
  padding: 24px;
}

.newsletter-card span {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 18px;
  padding: 0;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
}

.newsletter-card p {
  margin-top: 10px;
}

.newsletter-preferences {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 430px);
  gap: 24px;
  align-items: start;
  padding: 28px;
}

.newsletter-preferences p {
  max-width: 620px;
  margin: 12px 0 0;
  color: var(--muted);
}

.preference-form {
  display: grid;
  gap: 10px;
}

.preference-form label {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 46px;
  padding: 10px 12px;
  color: var(--soft);
  background: color-mix(in srgb, var(--bg) 42%, transparent);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.preference-form input {
  width: 18px;
  height: 18px;
  accent-color: var(--brand);
}

/* Footer */
.site-footer.footer {
  display: block;
  padding: 0 var(--page-pad) 26px;
  background:
    linear-gradient(180deg, transparent, rgba(42, 216, 201, .06)),
    color-mix(in srgb, var(--surface) 94%, #000 6%);
  border-top: 1px solid var(--line);
}

[data-theme=light] .site-footer.footer {
  background:
    linear-gradient(180deg, transparent, rgba(42, 216, 201, .08)),
    #eaf0f3;
}

.footer-shell {
  display: grid;
  grid-template-columns: minmax(260px, 1.45fr) repeat(4, minmax(120px, 1fr));
  gap: 30px;
  width: min(100%, var(--container));
  margin: 0 auto;
  padding: 44px 0 30px;
}

.footer-newsletter {
  position: relative;
  display: grid;
  grid-column: 1 / -1;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 480px);
  gap: 24px;
  align-items: end;
  overflow: hidden;
  padding: 28px;
  background:
    linear-gradient(135deg, rgba(42, 216, 201, .15), rgba(216, 255, 97, .09) 54%, rgba(255, 180, 84, .1)),
    color-mix(in srgb, var(--surface-2) 82%, transparent);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.footer-newsletter h2 {
  max-width: 620px;
  margin: 8px 0 0;
  color: var(--text);
  font: 900 34px/1.05 "Space Grotesk", Inter, sans-serif;
  letter-spacing: 0;
}

.footer-newsletter p,
.footer-brand p {
  max-width: 420px;
  margin-top: 12px;
  color: var(--muted);
}

.footer-col h3 {
  margin: 0 0 12px;
  color: var(--text);
  font: 850 17px/1.15 "Space Grotesk", Inter, sans-serif;
  letter-spacing: 0;
}

.footer-col a {
  display: block;
  width: max-content;
  max-width: 100%;
  margin: 9px 0;
  color: var(--muted);
  font-weight: 700;
}

.footer-col a:hover {
  color: var(--brand);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  width: min(100%, var(--container));
  margin: 0 auto;
  padding-top: 18px;
  color: var(--muted);
  font-size: 13px;
  border-top: 1px solid var(--line);
}

/* Ads and utilities */
.ad-slot {
  display: flex;
  align-items: center;
  justify-content: center;
  width: min(100% - 32px, 980px);
  min-height: 104px;
  margin: 26px auto;
  padding: 10px;
  overflow: hidden;
  color: var(--muted);
  background: color-mix(in srgb, var(--surface-2) 74%, transparent);
  border: 1px dashed color-mix(in srgb, var(--brand) 50%, var(--line));
  border-radius: var(--radius);
}

.mobile-only-ad {
  display: none;
}

.adsterra-desktop,
.adsterra-mobile {
  max-width: 100%;
}

.backtop {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 160;
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  color: var(--ink);
  font-size: 0;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  border: 0;
  border-radius: 50%;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity .2s ease, transform .2s ease;
}

.backtop::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 13px;
  height: 13px;
  border-top: 3px solid currentColor;
  border-left: 3px solid currentColor;
  transform: translate(-50%, -35%) rotate(45deg);
}

.backtop.show {
  opacity: 1;
  pointer-events: auto;
  transform: none;
}

/* Responsive */
@media (max-width: 1100px) {
  .site-header .nav-shell {
    grid-template-columns: minmax(180px, auto) minmax(220px, 1fr) 48px 48px;
    max-width: 960px;
    gap: 12px;
  }

  .site-header .nav-links {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    z-index: 130;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 10px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-top: 0;
    border-radius: 0 0 var(--radius) var(--radius);
    box-shadow: var(--shadow);
  }

  [data-theme=light] .site-header .nav-links {
    background: #fff;
  }

  .site-header .nav-links.open {
    display: flex;
  }

  .site-header .nav-links a {
    justify-content: flex-start;
    width: 100%;
    min-height: 44px;
  }

  .menu-toggle {
    display: inline-grid;
  }

  .evidence-hero-content,
  .article-hero,
  .newsletter-hero,
  .footer-newsletter,
  .newsletter-preferences,
  .home-cta {
    grid-template-columns: 1fr;
  }

  .hero-image,
  .article-hero > :not(.hero-image) {
    grid-column: 1;
    grid-row: auto;
  }

  .hero-image img {
    min-height: 260px;
  }

  .footer-shell {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .workflow-rail,
  .topic-board,
  .home-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .grid,
  .grid.three,
  .grid.two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .featured-card {
    grid-column: span 2;
    grid-row: auto;
  }

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

  .toc {
    position: static;
  }

  .newsletter-card-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .site-header.nav {
    padding: 0 12px;
  }

  .site-header .nav-shell {
    grid-template-columns: minmax(0, 1fr) 46px 46px;
    gap: 8px;
    max-width: 680px;
    min-height: 0;
    padding: 8px 0;
  }

  .logo {
    font-size: 19px;
  }

  .logo span {
    width: 38px;
    height: 38px;
  }

  .nav-search-form {
    display: none;
    grid-column: 1 / -1;
    order: 4;
    height: 42px;
    background: var(--surface);
    backdrop-filter: none;
  }

  [data-theme=light] .nav-search-form {
    background: #fff;
  }

  .theme-toggle {
    order: 2;
  }

  .menu-toggle {
    order: 3;
    display: inline-grid;
  }

  .site-header .nav-links {
    top: 100%;
    background: var(--surface);
    backdrop-filter: none;
  }

  .site-header .nav-links.open + .nav-search-form {
    display: flex;
  }

  .home-hero,
  .evidence-hero {
    min-height: auto;
  }

  .evidence-hero-content {
    gap: 22px;
    padding-top: 44px;
    padding-bottom: 38px;
  }

  .hero-copy h1 {
    font-size: 42px;
    line-height: .98;
  }

  .lead {
    font-size: 17px;
  }

  .hero-search-row,
  .newsletter-form,
  .newsletter-page-form {
    grid-template-columns: 1fr;
  }

  .hero-search-row .btn,
  .newsletter-form .btn,
  .newsletter-page-form .btn,
  .preference-form .btn {
    width: 100%;
  }

  .home-stats,
  .workflow-rail,
  .topic-board,
  .grid,
  .grid.three,
  .grid.two {
    grid-template-columns: 1fr;
  }

  .home-section,
  .section {
    padding-top: 50px;
    padding-bottom: 50px;
  }

  .home-section-head,
  .section-head {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .featured-card {
    grid-column: auto;
  }

  .featured-card img,
  .card img,
  .hero-image img {
    aspect-ratio: 16 / 10;
  }

  .featured-card h3,
  .card h3 {
    font-size: 23px;
  }

  .article {
    padding-top: 28px;
    padding-bottom: 42px;
  }

  .article-hero,
  .article-box {
    padding: 22px;
  }

  .article h2 {
    font-size: 27px;
  }

  .newsletter-hero {
    padding-top: 42px;
  }

  .newsletter-copy {
    min-height: auto;
    padding: 28px 22px;
  }

  .footer-shell,
  .footer-newsletter {
    grid-template-columns: 1fr;
  }

  .footer-newsletter,
  .newsletter-preferences,
  .newsletter-panel,
  .newsletter-card {
    padding: 22px;
  }

  .footer-bottom {
    flex-direction: column;
  }

  .desktop-ad {
    display: none;
  }

  .mobile-only-ad {
    display: flex;
    min-height: 270px;
  }

  .backtop {
    right: 14px;
    bottom: 14px;
    width: 46px;
    height: 46px;
  }
}

@media (max-width: 460px) {
  .hero-copy h1,
  .newsletter-copy h1 {
    font-size: 36px;
  }

  .section h1,
  .article-hero h1 {
    font-size: 34px;
  }

  .section h2,
  .section-head h2,
  .home-section-head h2,
  .home-cta h2 {
    font-size: 31px;
  }

  .hero-actions,
  .cta {
    align-items: stretch;
    flex-direction: column;
  }

  .hero-actions .btn,
  .cta .btn {
    width: 100%;
  }

  .logo strong {
    max-width: 150px;
  }
}