:root {
  color-scheme: light dark;
  --font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --transition-duration: 0.3s;
  --radius-xl: 28px;
  --radius-lg: 22px;
}

html {
  font-family: var(--font-family);
  min-height: 100%;
  scroll-behavior: smooth;
}

html[data-theme='light'] {
  --bg-body: radial-gradient(circle at 0% 20%, rgba(59, 130, 246, 0.18) 0%, rgba(241, 245, 249, 0.08) 55%),
    linear-gradient(125deg, #f8fafc 0%, #fdf2f8 40%, #eef2ff 100%);
  --surface: rgba(255, 255, 255, 0.85);
  --surface-muted: rgba(255, 255, 255, 0.65);
  --surface-border: rgba(15, 23, 42, 0.08);
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --link-color: #4338ca;
  --brand-accent: #4f46e5;
  --badge-bg: rgba(99, 102, 241, 0.12);
  --badge-border: rgba(99, 102, 241, 0.25);
  --input-background: rgba(255, 255, 255, 0.8);
  --input-border: rgba(148, 163, 184, 0.35);
  --input-placeholder: #94a3b8;
  --shadow-xl: 0 30px 80px -45px rgba(15, 23, 42, 0.25);
  --footer-border: rgba(15, 23, 42, 0.08);
  --button-bg: linear-gradient(135deg, #4f46e5, #7c3aed 60%, #38bdf8);
}

html[data-theme='dark'] {
  --bg-body: radial-gradient(circle at 10% 10%, rgba(79, 70, 229, 0.35) 0%, rgba(15, 23, 42, 0.9) 45%),
    linear-gradient(135deg, #020617 0%, #0f172a 55%, #1e1b4b 100%);
  --surface: rgba(15, 23, 42, 0.72);
  --surface-muted: rgba(15, 23, 42, 0.55);
  --surface-border: rgba(148, 163, 184, 0.25);
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --link-color: #a5b4fc;
  --brand-accent: #6366f1;
  --badge-bg: rgba(79, 70, 229, 0.28);
  --badge-border: rgba(129, 140, 248, 0.4);
  --input-background: rgba(15, 23, 42, 0.72);
  --input-border: rgba(148, 163, 184, 0.35);
  --input-placeholder: #64748b;
  --shadow-xl: 0 40px 110px -55px rgba(2, 6, 23, 0.85);
  --footer-border: rgba(148, 163, 184, 0.25);
  --button-bg: linear-gradient(135deg, #6366f1, #7c3aed 55%, #38bdf8);
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg-body);
  color: var(--text-primary);
  transition: background 0.6s ease, color var(--transition-duration) ease;
}

a {
  color: var(--link-color);
  text-decoration: none;
  transition: color var(--transition-duration) ease, opacity 0.3s ease;
}

a:hover,
a:focus-visible {
  opacity: 0.9;
}

.site-wrapper {
  position: relative;
  z-index: 1;
  max-width: 1024px;
  margin: 0 auto;
  padding: clamp(32px, 4vw, 56px) clamp(20px, 4vw, 44px) 80px;
}

.site-header {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding: clamp(24px, 4vw, 36px);
  background: linear-gradient(140deg, rgba(255, 255, 255, 0.9) 0%, rgba(255, 255, 255, 0.72) 60%, rgba(236, 233, 254, 0.7) 100%);
  border: 1px solid var(--surface-border);
  border-radius: 34px;
  box-shadow: var(--shadow-xl);
  backdrop-filter: blur(18px);
}

.site-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.12) 0%, rgba(14, 165, 233, 0.08) 45%, rgba(168, 85, 247, 0.14) 100%);
  opacity: var(--header-overlay, 1);
  pointer-events: none;
}

.site-header::after {
  content: '';
  position: absolute;
  top: -80px;
  right: 60px;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle at center, rgba(99, 102, 241, 0.18), transparent 65%);
  filter: blur(40px);
  pointer-events: none;
}

html[data-theme='dark'] .site-header {
  background: linear-gradient(140deg, rgba(15, 23, 42, 0.86) 0%, rgba(15, 23, 42, 0.74) 55%, rgba(30, 64, 175, 0.68) 100%);
  border-color: rgba(148, 163, 184, 0.25);
}

html[data-theme='dark'] .site-header::before {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.32) 0%, rgba(14, 165, 233, 0.14) 40%, rgba(168, 85, 247, 0.26) 100%);
}

.site-header__top,
.site-header__bottom {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.site-header__bottom {
  gap: 20px;
}

.site-header__tagline {
  margin: 0;
  max-width: 480px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 600;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 8px 18px;
  border-radius: 999px;
  text-decoration: none;
  color: inherit;
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(148, 163, 184, 0.22);
  box-shadow: 0 18px 60px -45px rgba(15, 23, 42, 0.65);
  transition: transform var(--transition-duration) ease, border-color var(--transition-duration) ease, background var(--transition-duration) ease, box-shadow var(--transition-duration) ease;
}

.brand:hover,
.brand:focus-visible {
  border-color: rgba(99, 102, 241, 0.4);
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 22px 60px -42px rgba(79, 70, 229, 0.45);
  transform: translateY(-1px);
}

.brand__icon {
  height: 58px;
  width: 58px;
  border-radius: 20px;
  box-shadow: 0 18px 45px -28px rgba(15, 23, 42, 0.45);
  flex-shrink: 0;
}

.brand__label {
  display: flex;
  flex-direction: column;
  gap: 2px;
  line-height: 1.1;
}

.brand__title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
}

.brand__subtitle {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

html[data-theme='dark'] .brand {
  background: rgba(15, 23, 42, 0.7);
  border-color: rgba(99, 102, 241, 0.26);
}

html[data-theme='dark'] .brand__icon {
  box-shadow: 0 18px 45px -30px rgba(14, 116, 144, 0.55);
}

html[data-theme='dark'] .brand__title {
  color: #e2e8f0;
}

html[data-theme='dark'] .brand__subtitle {
  color: #94a3b8;
}

@media (max-width: 639px) {
  .brand {
    padding: 6px 14px;
    gap: 12px;
  }

  .brand__icon {
    height: 52px;
    width: 52px;
  }

  .brand__title {
    font-size: 1rem;
  }

  .brand__subtitle {
    font-size: 0.65rem;
    letter-spacing: 0.12em;
  }
}

.beta-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.68rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  font-weight: 700;
  color: #4338ca;
  background: rgba(226, 232, 255, 0.72);
  border: 1px solid rgba(165, 180, 252, 0.8);
  box-shadow: 0 12px 30px -20px rgba(79, 70, 229, 0.6);
}

html[data-theme='dark'] .beta-badge {
  color: #c7d2fe;
  background: rgba(30, 41, 93, 0.6);
  border-color: rgba(129, 140, 248, 0.5);
}

.site-header__actions {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
}

.site-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 999px;
  font-weight: 600;
  color: var(--text-secondary);
  border: 1px solid transparent;
  transition: color var(--transition-duration) ease, background-color var(--transition-duration) ease, border-color var(--transition-duration) ease;
}

.site-nav__link svg {
  width: 14px;
  height: 14px;
  color: rgba(99, 102, 241, 0.7);
  transition: transform var(--transition-duration) ease;
}

.site-nav__link:hover,
.site-nav__link:focus-visible {
  color: var(--brand-accent);
  background: rgba(99, 102, 241, 0.1);
  border-color: rgba(99, 102, 241, 0.2);
}

.site-nav__link:hover svg,
.site-nav__link:focus-visible svg {
  transform: translateX(3px);
}

.site-nav__link.is-active {
  color: var(--brand-accent);
  background: rgba(99, 102, 241, 0.14);
  border-color: rgba(99, 102, 241, 0.3);
}

@media (max-width: 960px) {
  .site-header__bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-nav {
    justify-content: flex-start;
  }
}

@media (max-width: 560px) {
  .brand__text-upper {
    letter-spacing: 0.35em;
  }

  .brand__text-lower {
    font-size: 1.6rem;
  }

  .site-header__tagline {
    font-size: 0.9rem;
  }

  .beta-badge {
    display: none;
  }
}

.theme-toggle {
  border: 1px solid var(--surface-border);
  background: var(--surface-muted);
  color: var(--text-primary);
  border-radius: 999px;
  padding: 8px 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  transition: all var(--transition-duration) ease;
  box-shadow: 0 18px 45px -30px rgba(15, 23, 42, 0.6);
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  border-color: rgba(99, 102, 241, 0.4);
}

.theme-toggle__icon {
  font-size: 1rem;
  display: none;
}

html[data-theme='light'] .theme-toggle__icon--moon {
  display: inline;
}

html[data-theme='dark'] .theme-toggle__icon--sun {
  display: inline;
}

.theme-toggle__label {
  font-size: 0.65rem;
  letter-spacing: 0.36em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

@media (max-width: 640px) {
  .theme-toggle__label {
    display: none;
  }
}

.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;
}

.page-title {
  font-size: clamp(2.2rem, 4vw, 2.9rem);
  margin: 72px 0 12px;
  font-weight: 800;
}

.page-subtitle {
  font-size: 1rem;
  max-width: 720px;
  color: var(--text-secondary);
  margin: 0 0 36px;
}

.content-card {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-xl);
  padding: clamp(28px, 4vw, 40px);
  box-shadow: var(--shadow-xl);
  backdrop-filter: blur(18px);
  margin-bottom: 28px;
}

.content-card:last-of-type {
  margin-bottom: 0;
}

.content-card h2,
.content-card h3 {
  margin-top: 0;
  margin-bottom: 16px;
  font-size: 1.4rem;
}

.content-card p,
.content-card li,
.content-card dd {
  color: var(--text-secondary);
  line-height: 1.7;
}

.content-card dl {
  margin: 0;
}

.content-card dt {
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 18px;
}

.content-card dt:first-of-type {
  margin-top: 0;
}

.content-card dd {
  margin: 6px 0 0;
}

.content-card ul,
.content-card ol {
  padding-left: 20px;
  margin: 0 0 12px;
}

.content-card li {
  margin-bottom: 12px;
}

.content-card li:last-of-type {
  margin-bottom: 0;
}

form {
  display: grid;
  gap: 18px;
}

label {
  font-weight: 600;
  color: var(--text-primary);
}

input,
textarea {
  width: 100%;
  border-radius: 18px;
  border: 1px solid var(--input-border);
  background: var(--input-background);
  color: var(--text-primary);
  padding: 12px 16px;
  font-size: 1rem;
  transition: border var(--transition-duration) ease, box-shadow var(--transition-duration) ease;
}

input:focus-visible,
textarea:focus-visible {
  outline: none;
  border-color: rgba(99, 102, 241, 0.55);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

input::placeholder,
textarea::placeholder {
  color: var(--input-placeholder);
}

button.primary-button {
  justify-self: flex-start;
  border: none;
  border-radius: 16px;
  padding: 12px 20px;
  font-weight: 600;
  color: #fff;
  cursor: pointer;
  background: var(--button-bg);
  box-shadow: 0 22px 40px -25px rgba(79, 70, 229, 0.7);
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
}

button.primary-button:hover,
button.primary-button:focus-visible {
  transform: translateY(-1px);
  filter: brightness(1.05);
}

details {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  box-shadow: var(--shadow-xl);
  backdrop-filter: blur(18px);
  margin-bottom: 18px;
}

details:last-of-type {
  margin-bottom: 0;
}

summary {
  list-style: none;
  position: relative;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  padding-right: 24px;
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  content: '+';
  position: absolute;
  right: 0;
  top: 0;
  font-weight: 700;
  color: var(--brand-accent);
}

details[open] summary::after {
  content: '−';
}

details p {
  margin-top: 16px;
  margin-bottom: 0;
  color: var(--text-secondary);
}

.site-footer {
  margin-top: 72px;
  padding-top: 32px;
  border-top: 1px solid var(--footer-border);
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  align-items: flex-start;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.6);
  border-radius: 28px;
  padding: 24px clamp(20px, 4vw, 32px);
  box-shadow: 0 24px 70px -50px rgba(15, 23, 42, 0.6);
}

html[data-theme='dark'] .site-footer__inner {
  background: rgba(15, 23, 42, 0.6);
}

.site-footer__copy {
  max-width: 440px;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.site-footer__copy strong {
  display: block;
  font-size: 1.05rem;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.site-footer__nav {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 12px;
  font-weight: 600;
  color: var(--text-secondary);
}

.site-footer__nav a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: color var(--transition-duration) ease, background-color var(--transition-duration) ease, border-color var(--transition-duration) ease;
}

.site-footer__nav a:hover,
.site-footer__nav a:focus-visible {
  color: var(--brand-accent);
  background: rgba(99, 102, 241, 0.1);
  border-color: rgba(99, 102, 241, 0.15);
}

/* Archive page layout */
  .badge--faded {
    background: linear-gradient(135deg, rgba(129, 140, 248, 0.12), rgba(14, 165, 233, 0.12));
    border: 1px solid rgba(129, 140, 248, 0.25);
    color: var(--brand-accent);
  }

  .archive-hero {
    margin-top: clamp(24px, 6vw, 48px);
    padding: clamp(28px, 6vw, 60px);
    border-radius: calc(var(--radius-xl) + 16px);
    background: linear-gradient(135deg, rgba(51, 102, 255, 0.08), rgba(13, 148, 136, 0.1)), var(--surface);
    border: 1px solid rgba(148, 163, 184, 0.2);
    box-shadow: 0 40px 90px -60px rgba(79, 70, 229, 0.45);
    overflow: hidden;
    position: relative;
  }

  .archive-hero__inner {
    display: grid;
    gap: clamp(26px, 6vw, 48px);
    align-items: center;
  }

  @media (min-width: 960px) {
    .archive-hero__inner {
      grid-template-columns: minmax(0, 2fr) minmax(220px, 1fr);
    }
  }

  .archive-hero__copy {
    display: flex;
    flex-direction: column;
    gap: clamp(16px, 3vw, 24px);
    max-width: 640px;
  }

  .archive-hero__title {
    margin: 0;
    font-size: clamp(2rem, 4.5vw, 2.8rem);
    line-height: 1.1;
    font-weight: 800;
    color: var(--text-primary);
  }

  .archive-hero__lede {
    margin: 0;
    font-size: clamp(1rem, 2.2vw, 1.2rem);
    color: var(--text-secondary);
    max-width: 54ch;
  }

  .archive-hero__stats {
    display: grid;
    gap: clamp(12px, 3vw, 18px);
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  }

  .archive-hero__stat {
    padding: clamp(14px, 2.8vw, 18px);
    border-radius: calc(var(--radius-lg) + 6px);
    background: rgba(255, 255, 255, 0.65);
    border: 1px solid rgba(148, 163, 184, 0.2);
    box-shadow: 0 28px 60px -48px rgba(79, 70, 229, 0.4);
  }

  .archive-hero__stat dt {
    margin: 0;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.22em;
    color: var(--text-secondary);
  }

  .archive-hero__stat dd {
    margin: 6px 0 0;
    font-size: clamp(1.25rem, 3vw, 1.8rem);
    font-weight: 700;
    color: var(--text-primary);
  }

  .archive-hero__visual {
    position: relative;
    min-height: clamp(200px, 32vw, 280px);
    display: grid;
    place-items: center;
  }

  .archive-hero__orb {
    position: absolute;
    border-radius: 50%;
    opacity: 0.75;
  }

  .archive-hero__orb--primary {
    width: clamp(160px, 26vw, 240px);
    height: clamp(160px, 26vw, 240px);
    background: radial-gradient(circle at 30% 30%, rgba(129, 140, 248, 0.48), rgba(129, 140, 248, 0));
    transform: translate(-20%, -10%);
  }

  .archive-hero__orb--secondary {
    width: clamp(140px, 24vw, 220px);
    height: clamp(140px, 24vw, 220px);
    background: radial-gradient(circle at 70% 70%, rgba(45, 212, 191, 0.4), rgba(45, 212, 191, 0));
    transform: translate(30%, 10%);
  }

  .archive-hero__tagline {
    position: relative;
    padding: 14px 22px;
    border-radius: calc(var(--radius-lg) + 10px);
    background: rgba(15, 23, 42, 0.85);
    color: #fff;
    font-weight: 700;
    font-size: 0.95rem;
    text-align: center;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    box-shadow: 0 24px 70px -40px rgba(15, 23, 42, 0.6);
  }

  .archive-controls {
    margin-top: clamp(28px, 6vw, 48px);
  }

  .archive-controls__inner {
    display: grid;
    gap: clamp(18px, 4vw, 28px);
    padding: clamp(20px, 5vw, 32px);
    border-radius: calc(var(--radius-xl) + 8px);
    background: var(--surface);
    border: 1px solid var(--surface-border);
    box-shadow: var(--shadow-xl);
  }

  .archive-controls__header h2 {
    margin: 0;
    font-size: clamp(1.4rem, 3vw, 1.8rem);
    font-weight: 700;
    color: var(--text-primary);
  }

  .archive-controls__header p {
    margin: 6px 0 0;
    color: var(--text-secondary);
  }

  .archive-filters__group {
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  .archive-label {
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.22em;
    color: var(--text-secondary);
  }

  .archive-field {
    display: flex;
    flex-direction: column;
    gap: 8px;
    position: relative;
  }

  .archive-field input[type="number"],
  .archive-field input[type="date"] {
    width: 100%;
    padding: 14px 18px;
    border-radius: 18px;
    border: 1px solid var(--input-border);
    background: var(--input-background);
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color var(--transition-duration) ease, box-shadow var(--transition-duration) ease;
  }

  .archive-field input:focus {
    outline: none;
    border-color: var(--brand-accent);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.18);
  }

  .archive-field__hint {
    font-size: 0.78rem;
    color: var(--text-secondary);
  }

  .archive-filters__actions {
    display: flex;
    align-items: center;
    justify-content: flex-start;
  }

  .button--secondary {
    background: rgba(129, 140, 248, 0.14);
    color: var(--brand-accent);
    border: 1px solid rgba(129, 140, 248, 0.25);
  }

  .button--secondary:hover,
  .button--secondary:focus-visible {
    background: rgba(99, 102, 241, 0.18);
    color: var(--brand-accent);
    box-shadow: 0 20px 40px -24px rgba(79, 70, 229, 0.45);
  }

  .archive-controls__helper {
    margin: 0;
    font-size: 0.85rem;
    color: var(--text-secondary);
  }

  .archive-results {
    margin-top: clamp(28px, 6vw, 52px);
  }

  .archive-results__header {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
  }

  .archive-results__header h2 {
    margin: 0;
    font-size: clamp(1.4rem, 3vw, 1.8rem);
    font-weight: 700;
  }

  .archive-results__count {
    margin: 0;
    font-weight: 600;
    color: var(--text-secondary);
  }

  .archive-results__status {
    margin-top: clamp(16px, 3vw, 22px);
    padding: 16px 20px;
    border-radius: 18px;
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.18);
    color: var(--brand-accent);
    font-weight: 600;
  }
  .archive-filters {
    display: grid;
    gap: clamp(18px, 3vw, 24px);
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    align-items: end;
    margin: 0;
    padding: 0;
    background: transparent;
    border: none;
    box-shadow: none;
  }

.archive-filters label {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-weight: 600;
  color: var(--text-secondary);
}

  .archive-filters .button {
    align-self: flex-start;
    transition: transform var(--transition-duration) ease, box-shadow var(--transition-duration) ease;
  }

  .archive-filters .button:hover,
  .archive-filters .button:focus-visible {
    transform: translateY(-1px);
    box-shadow: 0 14px 30px -20px rgba(79, 70, 229, 0.45);
    outline: none;
  }


  .archive-list {
    list-style: none;
    display: grid;
    gap: clamp(20px, 4vw, 32px);
    margin: clamp(24px, 5vw, 40px) 0 0;
    padding: 0;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  }

.archive-item {
  margin: 0;
  position: relative;
}

  .archive-card {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: clamp(18px, 3vw, 24px);
    padding: clamp(22px, 3vw, 28px);
    border-radius: calc(var(--radius-xl) + 6px);
    background: linear-gradient(160deg, rgba(255, 255, 255, 0.95) 0%, rgba(240, 249, 255, 0.9) 50%, rgba(250, 245, 255, 0.95) 100%);
    border: 1px solid rgba(148, 163, 184, 0.28);
    box-shadow: 0 34px 70px -52px rgba(79, 70, 229, 0.48);
    color: var(--text-primary);
    transition: transform 0.24s ease, border-color 0.25s ease, box-shadow 0.25s ease, outline-color 0.25s ease, background 0.25s ease;
    overflow: hidden;
  }

  .archive-card::before {
    content: '';
    position: absolute;
    inset: -60% 40% auto -40%;
    height: 200%;
    background: radial-gradient(circle at 20% 20%, rgba(129, 140, 248, 0.32), rgba(129, 140, 248, 0));
    opacity: 0.6;
    pointer-events: none;
    transition: transform 0.35s ease, opacity 0.35s ease;
  }

  .archive-card:hover,
  .archive-card:focus-within {
    transform: translateY(-6px);
    border-color: rgba(99, 102, 241, 0.45);
    box-shadow: 0 42px 90px -56px rgba(79, 70, 229, 0.55);
    background: linear-gradient(160deg, rgba(255, 255, 255, 0.97) 0%, rgba(235, 245, 255, 0.92) 50%, rgba(245, 238, 255, 0.97) 100%);
    outline: none;
  }

  .archive-card:hover::before,
  .archive-card:focus-within::before {
    transform: translate(-10%, -6%);
    opacity: 0.8;
  }

  .archive-card:focus-visible {
    outline: 2px solid rgba(99, 102, 241, 0.5);
    outline-offset: 2px;
  }

  .archive-card[data-selected="true"] {
    border-color: rgba(99, 102, 241, 0.58);
    box-shadow: 0 50px 110px -70px rgba(79, 70, 229, 0.6);
  }

  .archive-card__header {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: clamp(14px, 3vw, 20px);
  }

  .archive-card__top {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    align-items: center;
    justify-content: space-between;
  }

  .archive-card__meta {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
  }

  .archive-card__number {
    font-size: clamp(1.5rem, 3.8vw, 2.4rem);
    font-weight: 800;
    color: var(--brand-accent);
    background: linear-gradient(120deg, rgba(99, 102, 241, 0.85), rgba(56, 189, 248, 0.85));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  .archive-card__date {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 0.82rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-secondary);
  }

  .archive-card__weekday {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--text-secondary);
  }

  .archive-card__calendar {
    font-size: 0.98rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: var(--text-primary);
  }

.archive-card__actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

  .archive-card__badge {
    padding: 4px 10px;
    font-size: 0.62rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    background: rgba(129, 140, 248, 0.14);
    border: 1px solid rgba(129, 140, 248, 0.4);
    border-radius: 999px;
    color: var(--brand-accent);
  }

  .archive-card__permalink {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 999px;
    border: 1px solid rgba(148, 163, 184, 0.3);
    background: rgba(255, 255, 255, 0.8);
    color: var(--text-secondary);
    transition: color var(--transition-duration) ease, border-color var(--transition-duration) ease, background var(--transition-duration) ease;
  }

  .archive-card__permalink:hover,
  .archive-card__permalink:focus-visible {
    color: var(--brand-accent);
    border-color: rgba(99, 102, 241, 0.45);
    background: rgba(99, 102, 241, 0.12);
    outline: none;
  }

.archive-card__permalink svg {
  width: 16px;
  height: 16px;
}

  .archive-card__title {
    margin: 0;
    font-size: clamp(1.2rem, 3vw, 1.6rem);
    font-weight: 700;
  }

.archive-card__title-link {
  color: inherit;
  text-decoration: none;
  position: relative;
  transition: color var(--transition-duration) ease;
}

.archive-card__title-link::after {
  content: '';
  position: absolute;
  inset: auto 0 -2px 0;
  height: 2px;
  background: linear-gradient(90deg, rgba(99, 102, 241, 0), rgba(99, 102, 241, 0.7), rgba(99, 102, 241, 0));
  opacity: 0;
  transform: scaleX(0.75);
  transition: opacity var(--transition-duration) ease, transform var(--transition-duration) ease;
}

.archive-card__title-link:hover,
.archive-card__title-link:focus-visible {
  color: var(--brand-accent);
  outline: none;
}

.archive-card__title-link:hover::after,
.archive-card__title-link:focus-visible::after {
  opacity: 1;
  transform: scaleX(1);
}

  .archive-card__difficulty {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
  }

  .archive-card__difficulty-label {
    display: inline-flex;
    align-items: center;
    padding: 6px 14px;
    border-radius: 999px;
    background: rgba(99, 102, 241, 0.14);
    border: 1px solid rgba(99, 102, 241, 0.28);
    font-size: 0.74rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--brand-accent);
  }

  .archive-card__details {
    margin: 0;
    padding: 0;
    border-radius: calc(var(--radius-lg) + 4px);
    border: 1px solid rgba(99, 102, 241, 0.18);
    background: rgba(99, 102, 241, 0.08);
    overflow: hidden;
    transition: border-color var(--transition-duration) ease, background var(--transition-duration) ease, padding var(--transition-duration) ease;
  }

  .archive-card__details[open] {
    background: rgba(99, 102, 241, 0.12);
    border-color: rgba(99, 102, 241, 0.32);
    padding: 10px 14px 14px;
  }

.archive-card__summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0;
  padding: 14px 18px;
  cursor: pointer;
  background: transparent;
  color: inherit;
  outline: none;
  transition: background var(--transition-duration) ease, color var(--transition-duration) ease;
}

.archive-card__summary::-webkit-details-marker {
  display: none;
}

.archive-card__summary:hover,
.archive-card__summary:focus-visible {
  background: rgba(99, 102, 241, 0.18);
}

.archive-card__summary-text {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1 1 240px;
}

.archive-card__summary-label {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-primary);
}

.archive-card__summary-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  width: 100%;
}

.archive-card__summary-tags:empty {
  display: none;
}

.archive-card__chip {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(148, 163, 184, 0.35);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.archive-card__summary-icon {
  width: 32px;
  height: 32px;
  border-radius: 999px;
  border: 1px solid rgba(99, 102, 241, 0.18);
  display: grid;
  place-items: center;
  color: var(--brand-accent);
  margin-left: auto;
  flex-shrink: 0;
  transition: transform var(--transition-duration) ease, background var(--transition-duration) ease, border-color var(--transition-duration) ease;
}

.archive-card__summary-icon::before {
  content: '\25BC';
  font-size: 0.7rem;
  transition: transform var(--transition-duration) ease;
}

.archive-card__details[open] .archive-card__summary-icon {
  background: rgba(99, 102, 241, 0.2);
  border-color: rgba(99, 102, 241, 0.28);
}

.archive-card__details[open] .archive-card__summary-icon::before {
  transform: rotate(180deg);
}

.archive-card__solutions {
  padding: clamp(16px, 3vw, 22px);
  display: grid;
  gap: clamp(16px, 3vw, 20px);
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  align-items: stretch;
  background: rgba(255, 255, 255, 0.55);
}

.archive-card__empty {
  margin: 0;
  padding: 12px 14px;
  border-radius: var(--radius-lg);
  border: 1px dashed var(--surface-border);
  background: var(--surface-muted);
  color: var(--text-secondary);
  font-weight: 600;
  text-align: center;
  font-size: 0.85rem;
}

.archive-group {
  padding: 16px;
  border-radius: calc(var(--radius-md) + 6px);
  border: 1px solid rgba(148, 163, 184, 0.28);
  background: rgba(248, 250, 252, 0.85);
  display: grid;
  gap: 12px;
  transition: border-color var(--transition-duration) ease, background var(--transition-duration) ease, transform 0.2s ease;
}

.archive-group__header {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: var(--text-primary);
}

.archive-group__marker {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  background: currentColor;
  opacity: 0.85;
}

.archive-group__title {
  margin: 0;
}

.archive-group__words {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.archive-group__words li {
  padding: 8px 12px;
  border-radius: 10px;
  border: 1px solid rgba(148, 163, 184, 0.22);
  background: rgba(148, 163, 184, 0.16);
  color: var(--text-secondary);
  font-weight: 600;
}

.archive-card__footer {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

@media (max-width: 720px) {
  .archive-card {
    padding: clamp(18px, 6vw, 26px);
    gap: clamp(16px, 4vw, 22px);
  }

  .archive-card__meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .archive-card__summary {
    flex-direction: column;
    gap: 14px;
  }

  .archive-card__summary-icon {
    align-self: flex-end;
  }
}

@media (min-width: 960px) {
  .archive-card__summary {
    align-items: center;
  }
}

.archive-group--yellow {
  background: linear-gradient(135deg, rgba(253, 230, 138, 0.35), rgba(255, 255, 255, 0.85));
  border-color: rgba(251, 191, 36, 0.45);
}

.archive-group--yellow {
  border-color: rgba(234, 179, 8, 0.35);
  background: linear-gradient(135deg, rgba(254, 240, 138, 0.4), rgba(255, 255, 255, 0.8));
}

.archive-group--yellow .archive-group__marker {
  background: rgba(234, 179, 8, 0.9);
}

.archive-group--yellow .archive-group__words li {
  background: rgba(250, 204, 21, 0.18);
  border-color: rgba(234, 179, 8, 0.32);
}

.archive-group--green {
  border-color: rgba(34, 197, 94, 0.35);
  background: linear-gradient(135deg, rgba(134, 239, 172, 0.35), rgba(255, 255, 255, 0.8));
}

.archive-group--green .archive-group__marker {
  background: rgba(34, 197, 94, 0.9);
}

.archive-group--green .archive-group__words li {
  background: rgba(74, 222, 128, 0.18);
  border-color: rgba(34, 197, 94, 0.32);
}

.archive-group--blue {
  border-color: rgba(37, 99, 235, 0.35);
  background: linear-gradient(135deg, rgba(147, 197, 253, 0.35), rgba(255, 255, 255, 0.8));
}

.archive-group--blue .archive-group__marker {
  background: rgba(37, 99, 235, 0.9);
}

.archive-group--blue .archive-group__words li {
  background: rgba(96, 165, 250, 0.18);
  border-color: rgba(37, 99, 235, 0.32);
}

.archive-group--purple {
  border-color: rgba(124, 58, 237, 0.35);
  background: linear-gradient(135deg, rgba(196, 181, 253, 0.35), rgba(255, 255, 255, 0.8));
}

.archive-group--purple .archive-group__marker {
  background: rgba(124, 58, 237, 0.9);
}

.archive-group--purple .archive-group__words li {
  background: rgba(167, 139, 250, 0.18);
  border-color: rgba(124, 58, 237, 0.32);
}

html[data-theme='dark'] .archive-hero {
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.18), rgba(14, 165, 233, 0.12)), rgba(15, 23, 42, 0.95);
  border-color: rgba(99, 102, 241, 0.2);
  box-shadow: 0 40px 90px -50px rgba(79, 70, 229, 0.4);
}

html[data-theme='dark'] .archive-hero__stat {
  background: rgba(15, 23, 42, 0.85);
  border-color: rgba(129, 140, 248, 0.35);
  box-shadow: 0 28px 60px -44px rgba(79, 70, 229, 0.45);
}

html[data-theme='dark'] .archive-hero__lede,
html[data-theme='dark'] .archive-controls__header p,
html[data-theme='dark'] .archive-results__count,
html[data-theme='dark'] .archive-controls__helper {
  color: var(--text-secondary);
}

html[data-theme='dark'] .archive-controls__inner {
  background: rgba(15, 23, 42, 0.92);
  border-color: rgba(99, 102, 241, 0.22);
  box-shadow: 0 36px 70px -52px rgba(15, 23, 42, 0.7);
}

html[data-theme='dark'] .archive-field input[type="number"],
html[data-theme='dark'] .archive-field input[type="date"] {
  background: rgba(15, 23, 42, 0.88);
  border-color: rgba(99, 102, 241, 0.25);
  color: var(--text-primary);
}

html[data-theme='dark'] .archive-field input:focus {
  box-shadow: 0 0 0 4px rgba(129, 140, 248, 0.22);
}

html[data-theme='dark'] .button--secondary {
  background: rgba(99, 102, 241, 0.22);
  border-color: rgba(129, 140, 248, 0.4);
  color: #c7d2fe;
}

html[data-theme='dark'] .button--secondary:hover,
html[data-theme='dark'] .button--secondary:focus-visible {
  background: rgba(99, 102, 241, 0.32);
  box-shadow: 0 24px 50px -30px rgba(79, 70, 229, 0.55);
}

html[data-theme='dark'] .archive-results__status {
  background: rgba(99, 102, 241, 0.24);
  border-color: rgba(129, 140, 248, 0.35);
  color: #c7d2fe;
}

html[data-theme='dark'] .archive-card {
  background: linear-gradient(160deg, rgba(23, 37, 84, 0.96) 0%, rgba(30, 58, 138, 0.9) 50%, rgba(76, 29, 149, 0.92) 100%);
  border-color: rgba(129, 140, 248, 0.25);
  box-shadow: 0 40px 90px -60px rgba(14, 116, 144, 0.5);
}

html[data-theme='dark'] .archive-card::before {
  background: radial-gradient(circle at 20% 20%, rgba(99, 102, 241, 0.5), rgba(99, 102, 241, 0));
}

html[data-theme='dark'] .archive-card:hover,
html[data-theme='dark'] .archive-card:focus-within {
  border-color: rgba(129, 140, 248, 0.45);
  box-shadow: 0 60px 120px -70px rgba(99, 102, 241, 0.6);
}

html[data-theme='dark'] .archive-card:focus-visible {
  outline-color: rgba(129, 140, 248, 0.7);
}

html[data-theme='dark'] .archive-card[data-selected="true"] {
  border-color: rgba(129, 140, 248, 0.58);
}

html[data-theme='dark'] .archive-card__permalink {
  background: rgba(15, 23, 42, 0.88);
  border-color: rgba(148, 163, 184, 0.32);
  color: var(--text-secondary);
}

html[data-theme='dark'] .archive-card__permalink:hover,
html[data-theme='dark'] .archive-card__permalink:focus-visible {
  background: rgba(79, 70, 229, 0.25);
  border-color: rgba(129, 140, 248, 0.45);
  color: #c7d2fe;
}

html[data-theme='dark'] .archive-card__badge {
  background: rgba(129, 140, 248, 0.25);
  border-color: rgba(129, 140, 248, 0.45);
  color: #c7d2fe;
}

html[data-theme='dark'] .archive-card__difficulty-label {
  background: rgba(129, 140, 248, 0.25);
  border-color: rgba(129, 140, 248, 0.45);
  color: #c7d2fe;
}

html[data-theme='dark'] .archive-card__details[open] {
  background: rgba(79, 70, 229, 0.15);
  border-color: rgba(129, 140, 248, 0.35);
}

html[data-theme='dark'] .archive-card__summary {
  background: rgba(79, 70, 229, 0.12);
  color: var(--text-secondary);
}

html[data-theme='dark'] .archive-card__summary:hover,
html[data-theme='dark'] .archive-card__summary:focus-visible {
  background: rgba(129, 140, 248, 0.28);
  color: #c7d2fe;
}

html[data-theme='dark'] .archive-card__chip {
  background: rgba(129, 140, 248, 0.25);
  border-color: rgba(129, 140, 248, 0.45);
  color: #c7d2fe;
}

html[data-theme='dark'] .archive-card__summary-icon {
  border-color: rgba(129, 140, 248, 0.35);
  color: #c7d2fe;
}

html[data-theme='dark'] .archive-cta {\n  background: rgba(129, 140, 248, 0.22);\n  border-color: rgba(129, 140, 248, 0.4);\n  color: #c7d2fe;\n}\n\nhtml[data-theme='dark'] .archive-card:hover .archive-cta,\nhtml[data-theme='dark'] .archive-card:focus-within .archive-cta {\n  background: rgba(129, 140, 248, 0.35);\n  box-shadow: 0 26px 60px -38px rgba(79, 70, 229, 0.6);\n}\n\nhtml[data-theme='dark'] .archive-group {
  background: rgba(15, 23, 42, 0.84);
  border-color: rgba(129, 140, 248, 0.28);
}

html[data-theme='dark'] .archive-group__words li {
  background: rgba(30, 41, 59, 0.9);
  border-color: rgba(99, 102, 241, 0.28);
  color: var(--text-secondary);
}

html[data-theme='dark'] .archive-group--yellow {
  background: linear-gradient(135deg, rgba(234, 179, 8, 0.18), rgba(15, 23, 42, 0.92));
  border-color: rgba(234, 179, 8, 0.35);
}

html[data-theme='dark'] .archive-group--green {
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.18), rgba(15, 23, 42, 0.92));
  border-color: rgba(34, 197, 94, 0.35);
}

html[data-theme='dark'] .archive-group--blue {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.2), rgba(15, 23, 42, 0.92));
  border-color: rgba(37, 99, 235, 0.35);
}

html[data-theme='dark'] .archive-group--purple {
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.2), rgba(15, 23, 42, 0.92));
  border-color: rgba(124, 58, 237, 0.35);
}

.archive-rating {
  display: flex;
  gap: 8px;
  align-items: center;
}

.archive-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.35);
  transition: background var(--transition-duration) ease, transform var(--transition-duration) ease;
}

.archive-dot.is-active {
  background: var(--brand-accent);
  transform: scale(1.05);
}

.archive-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 999px;
  font-weight: 700;
  color: var(--brand-accent);
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.25);
  transition: transform var(--transition-duration) ease, box-shadow var(--transition-duration) ease, background var(--transition-duration) ease;
}

.archive-cta::after {
  content: '\2192';
  font-size: 0.9rem;
  transition: transform var(--transition-duration) ease;
}

.archive-card:hover .archive-cta,
.archive-card:focus-within .archive-cta {
  background: rgba(99, 102, 241, 0.2);
  box-shadow: 0 20px 40px -32px rgba(79, 70, 229, 0.45);
}

.archive-card:hover .archive-cta::after,
.archive-card:focus-within .archive-cta::after {
  transform: translateX(4px);
}

.archive-empty {
  padding: clamp(24px, 4vw, 36px);
  border-radius: var(--radius-xl);
  border: 1px dashed var(--surface-border);
  background: var(--surface-muted);
  color: var(--text-secondary);
  text-align: center;
  font-weight: 600;
}

.site-footer__legal {
  display: block;
  margin-top: 18px;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

@media (max-width: 640px) {
  .site-footer__inner {
    flex-direction: column;
  }

  .site-footer__nav {
    justify-content: flex-start;
  }
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 16px;
  border-radius: 999px;
  background: var(--badge-bg);
  border: 1px solid var(--badge-border);
  text-transform: uppercase;
  letter-spacing: 0.28em;
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--brand-accent);
}

@media (max-width: 768px) {
  .page-title {
    margin-top: 56px;
  }
}

@media (max-width: 540px) {
  .site-header {
    padding: 16px 18px;
  }

  .brand-badge {
    height: 44px;
    width: 44px;
  }

  .site-nav {
    gap: 14px;
  }
}