/* =========================================================
   1. Design tokens
   ========================================================= */
:root {
  --font-heading: "Sora", sans-serif;
  --font-body: "Sora", sans-serif;
  --font-mono: "Roboto Mono", monospace;

  --space-1: 0.285714rem;
  --space-2: 0.571429rem;
  --space-3: 0.857143rem;
  --space-4: 1.142857rem;
  --space-6: 1.714286rem;
  --space-8: 2.285714rem;
  --space-12: 3.428571rem;
  --space-16: 4.571429rem;

  --radius-sm: 0.428571rem;
  --radius-md: 0.571429rem;
  --radius-lg: 0.714286rem;

  --shadow-sm: 0 1px 3px rgb(0 0 0 / 8%);
  --shadow-md: 0 4px 12px rgb(0 0 0 / 4%);
  --shadow-card: var(--shadow-sm), var(--shadow-md);

  --container-max: 82rem;
  --content-max: 48rem;

  --transition-fast: 160ms ease;
  --transition-base: 220ms ease;

  --color-transparent: transparent;
}

[data-theme="clinic"] {
  --bg-base: #faf7f4;
  --bg-surface: #f5efe8;
  --bg-surface-2: #ede4da;
  --bg-overlay: #ffffff;

  --primary: #c9746a;
  --primary-hover: #b5615a;
  --primary-light: #f2dbd8;
  --primary-text: #ffffff;

  --secondary: #8fa68a;
  --secondary-hover: #759470;
  --secondary-light: #ddeadb;

  --text-primary: #2b2220;
  --text-secondary: #5a4a45;
  --text-muted: #9a8a84;
  --text-on-primary: #ffffff;

  --border: #e2d5cc;
  --border-strong: #c9b8b0;

  --success: #6a9e74;
  --success-light: #d6ead9;

  --warning: #c9955a;
  --warning-light: #f2e0cc;

  --error: #c0574e;
  --error-light: #f2d5d2;

  --info: #7a9eb5;
  --info-light: #d5e5ef;
}

[data-theme="generic"] {
  --bg-base: #f6f8fb;
  --bg-surface: #eef2f7;
  --bg-surface-2: #e4eaf2;
  --bg-overlay: #ffffff;

  --primary: #3d80c4;
  --primary-hover: #2f6aaa;
  --primary-light: #d6e7f7;
  --primary-text: #ffffff;

  --secondary: #e0507a;
  --secondary-hover: #c93f67;
  --secondary-light: #fad6e2;

  --text-primary: #1a2636;
  --text-secondary: #3d5166;
  --text-muted: #7a90a8;
  --text-on-primary: #ffffff;

  --border: #d6dfeb;
  --border-strong: #bccbdb;

  --success: #5c9f90;
  --success-light: #d6ece6;

  --warning: #cc9a57;
  --warning-light: #f7e8d2;

  --error: #d16464;
  --error-light: #f7dddd;

  --info: #568bc8;
  --info-light: #d8e7f7;
}

:root,
[data-theme="clinic"],
[data-theme="generic"] {
  --text-muted-transparent: color-mix(in srgb, var(--text-muted) 50%, transparent);
  --surface-hover: color-mix(in srgb, var(--bg-surface) 92%, var(--text-primary));
  --surface-hover-strong: color-mix(
    in srgb,
    var(--bg-surface-2) 92%,
    var(--text-primary)
  );
  --overlay-hover: color-mix(in srgb, var(--bg-overlay) 92%, var(--text-primary));
  --focus-ring-color: color-mix(in srgb, var(--primary) 40%, transparent);
  --backdrop-color: color-mix(in srgb, var(--text-primary) 22%, transparent);
  --input-placeholder: color-mix(in srgb, var(--text-muted) 86%, transparent);
}

/* =========================================================
   2. Reset and global styles
   ========================================================= */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 7rem;
}

body {
  min-width: 20rem;
  margin: 0;
  overflow-x: hidden;
  color: var(--text-primary);
  background: var(--bg-base);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

button,
input,
textarea,
select {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

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

p,
h1,
h2,
h3,
h4,
ul,
ol,
figure {
  margin-top: 0;
}

h1,
h2,
h3,
h4 {
  color: var(--text-primary);
  font-family: var(--font-heading);
  line-height: 1.18;
  text-wrap: balance;
}

p,
li {
  text-wrap: pretty;
}

:focus-visible {
  outline: 3px solid var(--focus-ring-color);
  outline-offset: 3px;
}

::selection {
  color: var(--text-primary);
  background: var(--primary-light);
}

.container {
  width: min(calc(100% - 2.5rem), var(--container-max));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: var(--space-3);
  left: var(--space-3);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  color: var(--text-on-primary);
  background: var(--primary);
  transform: translateY(-180%);
  transition: transform var(--transition-fast);
}

.skip-link:focus {
  transform: translateY(0);
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
  color: var(--primary-hover);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.eyebrow > span {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 0 0.32rem var(--primary-light);
}

.version {
  display: inline-block;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.015em;
}

.button {
  display: inline-flex;
  min-height: 3.15rem;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.8rem 1.35rem;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1;
  transition:
    color var(--transition-fast),
    background-color var(--transition-fast),
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
}

.button:hover {
  transform: translateY(-2px);
}

.button:active {
  transform: translateY(0) scale(0.98);
}

.button-primary {
  color: var(--text-on-primary);
  background: var(--primary);
  box-shadow: 0 7px 18px rgb(201 116 106 / 22%);
}

.button-primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 9px 22px rgb(201 116 106 / 28%);
}

.button-secondary {
  border-color: var(--border);
  background: var(--bg-overlay);
}

.button-secondary:hover {
  border-color: var(--border-strong);
  background: var(--overlay-hover);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--primary-hover);
  font-size: 0.92rem;
  font-weight: 600;
}

.text-link span {
  transition: transform var(--transition-fast);
}

.text-link:hover span {
  transform: translateX(0.25rem);
}

/* =========================================================
   3. Header and navigation
   ========================================================= */
.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  border-bottom: 1px solid transparent;
  background: rgb(250 247 244 / 94%);
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base);
}

.site-header.is-scrolled {
  border-bottom-color: var(--border);
  box-shadow: 0 3px 14px rgb(43 34 32 / 4%);
}

.header-inner {
  display: flex;
  min-height: 5.7rem;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.brand {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: var(--space-3);
  border-radius: var(--radius-md);
}

.brand-logo {
  width: 3.15rem;
  height: 3.15rem;
  flex: 0 0 auto;
  clip-path: inset(16% round 21%);
  object-fit: cover;
  transform: scale(1.46);
}

.brand-copy {
  display: grid;
  line-height: 1.22;
}

.brand-copy strong {
  font-size: 0.96rem;
  font-weight: 700;
}

.brand-copy span {
  color: var(--text-muted);
  font-size: 0.75rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.site-nav > a {
  padding: 0.72rem 0.92rem;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.86rem;
  font-weight: 500;
  transition:
    color var(--transition-fast),
    background-color var(--transition-fast),
    transform var(--transition-fast);
}

.site-nav > a:hover,
.site-nav > a.is-active {
  color: var(--text-primary);
  background: var(--bg-surface);
}

.site-nav > .header-cta {
  margin-left: var(--space-2);
  border: 1px solid var(--border);
  color: var(--text-primary);
  background: var(--bg-overlay);
}

.site-nav > .header-cta:hover {
  border-color: var(--border-strong);
  background: var(--overlay-hover);
  transform: translateY(-1px);
}

.menu-toggle {
  display: none;
  width: 2.9rem;
  height: 2.9rem;
  padding: 0;
  place-content: center;
  gap: 0.3rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  background: var(--bg-overlay);
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 1.15rem;
  height: 2px;
  border-radius: 1rem;
  background: currentColor;
  transition:
    transform var(--transition-fast),
    opacity var(--transition-fast);
}

.menu-toggle.is-open span:nth-child(1) {
  transform: translateY(0.38rem) rotate(45deg);
}

.menu-toggle.is-open span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.is-open span:nth-child(3) {
  transform: translateY(-0.38rem) rotate(-45deg);
}

/* =========================================================
   4. Home hero
   ========================================================= */
.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(4.5rem, 10vw, 8.5rem) 0 clamp(4rem, 8vw, 7rem);
  border-bottom: 1px solid var(--border);
}

.hero::before,
.hero::after {
  position: absolute;
  border-radius: 50%;
  content: "";
  pointer-events: none;
}

.hero::before {
  width: 26rem;
  height: 26rem;
  top: -15rem;
  right: -6rem;
  border: 1px solid rgb(201 116 106 / 24%);
  box-shadow:
    0 0 0 4rem rgb(242 219 216 / 18%),
    0 0 0 8rem rgb(242 219 216 / 10%);
}

.hero::after {
  width: 8rem;
  height: 8rem;
  bottom: -5rem;
  left: 6%;
  background: var(--secondary-light);
  opacity: 0.48;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  align-items: center;
  gap: clamp(3rem, 8vw, 7rem);
  grid-template-columns: minmax(0, 1.08fr) minmax(22rem, 0.78fr);
}

.hero-copy {
  max-width: 45rem;
}

.hero h1 {
  max-width: 12ch;
  margin-bottom: var(--space-6);
  font-size: clamp(3rem, 7vw, 5.8rem);
  letter-spacing: -0.055em;
}

.hero-lead {
  max-width: 42rem;
  margin-bottom: var(--space-8);
  color: var(--text-secondary);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  line-height: 1.7;
}

.latest-highlight {
  position: relative;
  display: block;
  padding: clamp(1.7rem, 4vw, 2.7rem);
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: calc(var(--radius-lg) * 1.8);
  background: var(--bg-overlay);
  box-shadow: var(--shadow-card);
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-base);
}

.latest-highlight::after {
  position: absolute;
  width: 6.6rem;
  height: 6.6rem;
  right: -2.5rem;
  bottom: -2.5rem;
  border-radius: 50%;
  background: var(--primary-light);
  content: "";
  opacity: 0.6;
}

.latest-highlight:hover {
  border-color: var(--border-strong);
  box-shadow: 0 12px 30px rgb(43 34 32 / 9%);
  transform: translateY(-4px);
}

.latest-highlight-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.latest-highlight time,
.update-card time {
  color: var(--text-muted);
  font-size: 0.8rem;
}

.latest-highlight h2 {
  margin: var(--space-3) 0 var(--space-4);
  font-size: clamp(1.55rem, 3vw, 2.15rem);
  letter-spacing: -0.035em;
}

.latest-highlight p {
  margin-bottom: var(--space-6);
  color: var(--text-secondary);
}

/* =========================================================
   5. Updates list and recent navigation
   ========================================================= */
.updates-section {
  padding: clamp(4.5rem, 9vw, 7.5rem) 0;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}

.section-heading h2 {
  margin-bottom: 0;
  font-size: clamp(2rem, 4.2vw, 3.25rem);
  letter-spacing: -0.045em;
}

.section-heading > p {
  max-width: 25rem;
  margin-bottom: 0.2rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  text-align: right;
}

.updates-layout {
  display: grid;
  align-items: start;
  gap: clamp(2rem, 5vw, 4.5rem);
  grid-template-columns: minmax(0, 1fr) minmax(17rem, 21rem);
}

.updates-list {
  display: grid;
  gap: var(--space-6);
}

.update-card {
  position: relative;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: calc(var(--radius-lg) * 1.5);
  background: var(--bg-overlay);
  box-shadow: var(--shadow-card);
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-base);
}

.update-card::before {
  position: absolute;
  width: 3px;
  top: 1.6rem;
  bottom: 1.6rem;
  left: 0;
  border-radius: 0 1rem 1rem 0;
  background: var(--border);
  content: "";
  transition: background-color var(--transition-fast);
}

.update-card-featured::before {
  background: var(--primary);
}

.update-card:hover {
  border-color: var(--border-strong);
  box-shadow: 0 10px 26px rgb(43 34 32 / 8%);
  transform: translateY(-3px);
}

.update-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.update-card-meta > div {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.badge {
  display: inline-flex;
  min-height: 1.8rem;
  align-items: center;
  padding: 0.3rem 0.72rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 700;
  line-height: 1;
}

.badge-new {
  border-color: rgb(201 116 106 / 18%);
  color: var(--primary-hover);
  background: var(--primary-light);
}

.badge-improvement {
  border-color: rgb(143 166 138 / 22%);
  color: #61785d;
  background: var(--secondary-light);
}

.badge-fix {
  border-color: rgb(122 158 181 / 22%);
  color: #54788f;
  background: var(--info-light);
}

.update-card h3 {
  margin: var(--space-3) 0 var(--space-4);
  font-size: clamp(1.45rem, 3.1vw, 2.15rem);
  letter-spacing: -0.035em;
}

.update-card h3 a {
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
}

.update-card h3 a:hover {
  color: var(--primary-hover);
}

.update-card > p {
  max-width: 46rem;
  margin-bottom: var(--space-6);
  color: var(--text-secondary);
}

.update-points {
  display: grid;
  margin: 0 0 var(--space-6);
  padding: 0;
  gap: var(--space-2);
  color: var(--text-secondary);
  font-size: 0.9rem;
  list-style: none;
}

.update-points li {
  position: relative;
  padding-left: 1.4rem;
}

.update-points li::before {
  position: absolute;
  width: 0.45rem;
  height: 0.45rem;
  top: 0.55rem;
  left: 0;
  border-radius: 50%;
  background: var(--secondary);
  content: "";
}

.recent-panel {
  position: sticky;
  top: 7.3rem;
}

.recent-panel-inner {
  padding: var(--space-6);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius-lg) * 1.5);
  background: var(--bg-surface);
}

.aside-label {
  margin-bottom: var(--space-2);
  color: var(--text-muted);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.recent-panel h2 {
  margin-bottom: var(--space-6);
  font-size: 1.15rem;
}

.release-nav {
  display: grid;
  margin: 0;
  padding: 0;
  gap: var(--space-2);
  list-style: none;
}

.release-nav a {
  display: grid;
  position: relative;
  padding: var(--space-3) var(--space-4);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  background: transparent;
  grid-template-columns: 1fr auto;
  transition:
    border-color var(--transition-fast),
    background-color var(--transition-fast),
    transform var(--transition-fast);
}

.release-nav a:hover,
.release-nav a.is-current {
  border-color: var(--border);
  background: var(--bg-overlay);
  transform: translateX(2px);
}

.release-nav a.is-current::before {
  position: absolute;
  width: 3px;
  top: 0.8rem;
  bottom: 0.8rem;
  left: -1px;
  border-radius: 0 999px 999px 0;
  background: var(--primary);
  content: "";
}

.release-nav span {
  color: var(--primary-hover);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
}

.release-nav time {
  color: var(--text-muted);
  font-size: 0.68rem;
}

.release-nav strong {
  margin-top: var(--space-1);
  color: var(--text-primary);
  font-size: 0.8rem;
  font-weight: 600;
  grid-column: 1 / -1;
}

.recent-note {
  margin: var(--space-6) 0 0;
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.75rem;
}

/* =========================================================
   6. Individual release pages
   ========================================================= */
.release-page {
  padding: clamp(3rem, 7vw, 5.5rem) 0 clamp(5rem, 9vw, 8rem);
}

.breadcrumb {
  margin-bottom: var(--space-12);
  color: var(--text-muted);
  font-size: 0.78rem;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  margin: 0;
  padding: 0;
  gap: var(--space-2);
  list-style: none;
}

.breadcrumb li {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.breadcrumb li:not(:last-child)::after {
  color: var(--border-strong);
  content: "/";
}

.breadcrumb a {
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
}

.breadcrumb a:hover {
  color: var(--primary-hover);
}

.release-layout {
  display: grid;
  align-items: start;
  gap: clamp(2.5rem, 7vw, 6.5rem);
  grid-template-columns: minmax(0, var(--content-max)) minmax(17rem, 20rem);
  justify-content: space-between;
}

.release-article {
  min-width: 0;
}

.release-header {
  margin-bottom: var(--space-12);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid var(--border);
}

.release-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2) var(--space-3);
  margin-bottom: var(--space-6);
}

.release-meta time {
  color: var(--text-muted);
  font-size: 0.8rem;
}

.release-meta time::before {
  margin-right: var(--space-3);
  color: var(--border-strong);
  content: "•";
}

.release-header h1 {
  margin: var(--space-3) 0 var(--space-6);
  font-size: clamp(2.35rem, 6vw, 4.5rem);
  letter-spacing: -0.052em;
}

.release-summary {
  margin-bottom: 0;
  color: var(--text-secondary);
  font-size: clamp(1.05rem, 2vw, 1.22rem);
  line-height: 1.75;
}

.content-note {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  margin: 0 0 var(--space-12);
  padding: var(--space-4) var(--space-6);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
  background: var(--bg-surface);
  font-size: 0.82rem;
}

.content-note::before {
  width: 0.55rem;
  height: 0.55rem;
  flex: 0 0 auto;
  margin-top: 0.42rem;
  border-radius: 50%;
  background: var(--warning);
  content: "";
}

.release-content > section {
  margin-top: var(--space-12);
}

.release-content > section:first-child {
  margin-top: 0;
}

.release-content h2 {
  margin-bottom: var(--space-6);
  font-size: clamp(1.65rem, 3.6vw, 2.25rem);
  letter-spacing: -0.035em;
}

.release-content h3 {
  margin: var(--space-8) 0 var(--space-3);
  font-size: 1.15rem;
}

.release-content p,
.release-content li {
  color: var(--text-secondary);
}

.release-content p {
  margin-bottom: var(--space-6);
}

.release-content ul,
.release-content ol {
  display: grid;
  margin: 0 0 var(--space-6);
  padding-left: 1.25rem;
  gap: var(--space-3);
}

.release-content li::marker {
  color: var(--primary);
  font-weight: 700;
}

.feature-grid {
  display: grid;
  margin: var(--space-8) 0;
  gap: var(--space-4);
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature-card {
  padding: var(--space-6);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-overlay);
  box-shadow: var(--shadow-sm);
}

.feature-card-number {
  display: grid;
  width: 2.25rem;
  height: 2.25rem;
  margin-bottom: var(--space-6);
  place-items: center;
  border-radius: 50%;
  color: var(--primary-hover);
  background: var(--primary-light);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
}

.feature-card h3 {
  margin: 0 0 var(--space-2);
  font-size: 0.95rem;
}

.feature-card p {
  margin: 0;
  font-size: 0.8rem;
  line-height: 1.6;
}

.callout {
  position: relative;
  margin: var(--space-8) 0;
  padding: clamp(1.5rem, 4vw, 2.25rem);
  overflow: hidden;
  border: 1px solid rgb(143 166 138 / 30%);
  border-radius: calc(var(--radius-lg) * 1.4);
  background: var(--secondary-light);
}

.callout::after {
  position: absolute;
  width: 5rem;
  height: 5rem;
  right: -2rem;
  bottom: -2rem;
  border: 1px solid rgb(117 148 112 / 25%);
  border-radius: 50%;
  content: "";
}

.callout-label {
  margin-bottom: var(--space-2);
  color: var(--secondary-hover);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.callout h3 {
  margin: 0 0 var(--space-3);
  font-size: 1.25rem;
}

.callout p:last-child {
  margin-bottom: 0;
}

.release-media {
  margin: var(--space-8) 0;
}

.release-media img {
  width: 100%;
  height: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.release-media figcaption {
  margin-top: var(--space-3);
  color: var(--text-muted);
  font-size: 0.75rem;
  text-align: center;
}

.release-pagination {
  display: grid;
  margin-top: var(--space-16);
  padding-top: var(--space-8);
  border-top: 1px solid var(--border);
  gap: var(--space-4);
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.release-pagination-single {
  max-width: 23rem;
  grid-template-columns: minmax(0, 1fr);
}

.release-pagination a {
  display: grid;
  padding: var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-overlay);
  transition:
    border-color var(--transition-fast),
    transform var(--transition-fast);
}

.release-pagination a:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}

.release-pagination a:last-child {
  text-align: right;
}

.release-pagination span {
  color: var(--text-muted);
  font-size: 0.7rem;
}

.release-pagination strong {
  margin-top: var(--space-1);
  font-size: 0.82rem;
}

/* =========================================================
   7. About and footer
   ========================================================= */
.about-section {
  padding: 0 0 clamp(4.5rem, 9vw, 8rem);
}

.about-card {
  display: grid;
  align-items: center;
  gap: clamp(1.5rem, 5vw, 4.5rem);
  padding: clamp(2rem, 5vw, 4rem);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius-lg) * 2);
  background: var(--bg-surface);
  grid-template-columns: minmax(0, 1fr) minmax(18rem, 0.9fr) auto;
}

.about-card h2 {
  max-width: 18ch;
  margin-bottom: 0;
  font-size: clamp(1.75rem, 3.6vw, 2.65rem);
  letter-spacing: -0.04em;
}

.about-card > p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.site-footer {
  padding: var(--space-8) 0;
  border-top: 1px solid var(--border);
  background: var(--bg-surface);
}

.footer-inner {
  display: grid;
  align-items: center;
  gap: var(--space-6);
  grid-template-columns: auto 1fr auto auto;
}

.brand-footer .brand-logo {
  width: 2.8rem;
  height: 2.8rem;
}

.footer-inner > p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.75rem;
}

.footer-links {
  display: flex;
  gap: var(--space-4);
}

.footer-links a {
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.75rem;
}

.footer-links a:hover {
  color: var(--primary-hover);
}

.not-found {
  display: grid;
  min-height: 100svh;
  padding: var(--space-8);
  place-items: center;
}

.not-found-card {
  width: min(100%, 38rem);
  padding: clamp(2rem, 7vw, 4.5rem);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius-lg) * 2);
  background: var(--bg-overlay);
  box-shadow: var(--shadow-card);
  text-align: center;
}

.not-found-card .brand {
  margin-bottom: var(--space-12);
  text-align: left;
}

.not-found-code {
  display: block;
  margin-bottom: var(--space-3);
  color: var(--primary-hover);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 600;
}

.not-found-card h1 {
  margin-bottom: var(--space-4);
  font-size: clamp(2rem, 6vw, 3.5rem);
  letter-spacing: -0.045em;
}

.not-found-card > p {
  margin-bottom: var(--space-8);
  color: var(--text-secondary);
}

/* =========================================================
   8. Progressive enhancement and responsive behavior
   ========================================================= */
.js .reveal {
  opacity: 0;
  transform: translateY(1rem);
  transition:
    opacity 500ms ease,
    transform 500ms ease;
}

.js .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 68rem) {
  .hero-grid {
    gap: 3.5rem;
    grid-template-columns: minmax(0, 1fr) minmax(19rem, 0.78fr);
  }

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

  .about-card .button {
    width: max-content;
    grid-column: 1 / -1;
  }
}

@media (max-width: 58rem) {
  .hero-grid,
  .updates-layout,
  .release-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-copy {
    max-width: 46rem;
  }

  .hero h1 {
    max-width: none;
  }

  .latest-highlight {
    max-width: 42rem;
  }

  .recent-panel {
    position: static;
  }

  .recent-panel-inner {
    max-width: none;
  }

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

  .release-layout .recent-panel {
    order: -1;
  }

  .release-layout .recent-panel-inner {
    padding: var(--space-4);
  }

  .release-layout .recent-panel h2,
  .release-layout .recent-note {
    display: none;
  }

  .footer-inner {
    grid-template-columns: auto 1fr auto;
  }

  .footer-copyright {
    grid-column: 1 / -1;
  }
}

@media (max-width: 47.99rem) {
  html {
    scroll-padding-top: 6rem;
  }

  .container {
    width: min(calc(100% - 2rem), var(--container-max));
  }

  .header-inner {
    position: relative;
    min-height: 5.1rem;
    flex-wrap: wrap;
  }

  .brand-logo {
    width: 2.9rem;
    height: 2.9rem;
  }

  .site-nav {
    width: 100%;
    padding-bottom: var(--space-4);
    flex-wrap: wrap;
  }

  .site-nav > a {
    flex: 1 1 auto;
    text-align: center;
  }

  .site-nav > .header-cta {
    margin-left: 0;
  }

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

  .js .site-nav {
    position: absolute;
    top: calc(100% - 0.15rem);
    right: 0;
    left: 0;
    display: grid;
    width: auto;
    padding: var(--space-3);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    visibility: hidden;
    background: var(--bg-overlay);
    box-shadow: 0 14px 32px rgb(43 34 32 / 12%);
    opacity: 0;
    transform: translateY(-0.5rem);
    transition:
      visibility var(--transition-fast),
      opacity var(--transition-fast),
      transform var(--transition-fast);
  }

  .js .site-nav[data-open="true"] {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
  }

  .js .site-nav > a {
    width: 100%;
    text-align: left;
  }

  .hero {
    padding-top: 4rem;
  }

  .hero::before {
    width: 20rem;
    height: 20rem;
    top: -13rem;
    right: -10rem;
  }

  .hero-grid {
    gap: var(--space-12);
  }

  .hero h1 {
    font-size: clamp(2.75rem, 14vw, 4.1rem);
  }

  .hero-lead {
    font-size: 1rem;
  }

  .section-heading {
    display: block;
  }

  .section-heading > p {
    margin-top: var(--space-3);
    text-align: left;
  }

  .update-card-meta {
    display: grid;
    align-items: start;
  }

  .update-card-meta time {
    order: -1;
  }

  .about-card,
  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .about-card .button,
  .footer-copyright {
    grid-column: auto;
  }

  .about-card .button {
    width: 100%;
  }

  .footer-links {
    flex-wrap: wrap;
  }

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

  .release-pagination {
    grid-template-columns: minmax(0, 1fr);
  }

  .release-pagination a:last-child {
    text-align: left;
  }
}

@media (max-width: 29rem) {
  .container {
    width: min(calc(100% - 1.5rem), var(--container-max));
  }

  .latest-highlight-top {
    display: grid;
  }

  .release-nav {
    grid-template-columns: minmax(0, 1fr);
  }

  .button {
    width: 100%;
  }

  .release-header h1 {
    font-size: 2.25rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .js .reveal {
    opacity: 1;
    transform: none;
  }
}