:root {
  --font-sans: 'Inter', system-ui, sans-serif;
  --font-serif: 'EB Garamond', serif;
  
  /* Impeccable Colors: Tinted neutrals, no pure black/white */
  --color-canvas-white: #fcfcfd; 
  --color-ink-black: #0c0c0e; 
  --color-graphite: #18181b;
  --color-deep-slate: #27272a;
  --color-ash-gray: #71717a;
  --color-button-black: #18181b;
  --color-accent-red: #e11d48; /* Sophisticated rose-red */
  --color-accent-hover: #be123c;
  --color-subtle-cream: #f4f4f5;

  /* Premium multi-layered shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-card: 0 4px 6px -1px rgb(0 0 0 / 0.05), 0 2px 4px -2px rgb(0 0 0 / 0.05);
  --shadow-card-hover: 0 20px 25px -5px rgb(0 0 0 / 0.08), 0 8px 10px -6px rgb(0 0 0 / 0.04);
  --shadow-button: 0 4px 6px -1px rgba(225, 29, 72, 0.2), 0 2px 4px -2px rgba(225, 29, 72, 0.1);
  
  /* Motion & Easing */
  --ease-spring: cubic-bezier(0.175, 0.885, 0.32, 1.05);
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset & Accessibility */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-canvas-white);
  color: var(--color-ink-black);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow-x: hidden;
}

a, button {
  text-decoration: none;
  color: inherit;
  font-family: inherit;
  outline: none;
}

button {
  background: none;
  border: none;
  cursor: pointer;
}

/* Focus states (Accessibility) */
button:focus-visible, a:focus-visible {
  outline: 2px solid var(--color-accent-red);
  outline-offset: 4px;
  border-radius: 4px;
}

ul {
  list-style: none;
}

/* Typography Utility */
.font-serif { font-family: var(--font-serif); }
.italic { font-style: italic; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.tracking-tight { letter-spacing: -0.03em; }

/* Layout Utilities */
.w-full { width: 100%; }
.max-w-1200 { max-width: 1200px; }
.text-accent-red { color: var(--color-accent-red); }

/* Navigation */
.nav-header {
  width: 100%;
  max-width: 1200px;
  padding: 1.5rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 50;
  position: relative;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-icon {
  width: 28px;
  height: 28px;
  color: var(--color-accent-red);
}

.logo-text {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.75rem;
  letter-spacing: -0.03em;
  font-weight: 500;
}

.nav-links {
  display: none;
  align-items: center;
  gap: 2.5rem;
  font-size: 0.95rem;
  font-weight: 500;
}

.nav-links a {
  color: var(--color-ash-gray);
  transition: color 0.3s var(--ease-out-expo);
}

.nav-links a:hover {
  color: var(--color-ink-black);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.login-btn {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-ash-gray);
  transition: color 0.3s var(--ease-out-expo);
  display: none;
}

.login-btn:hover {
  color: var(--color-ink-black);
}

.start-test-btn {
  background-color: var(--color-button-black);
  color: var(--color-canvas-white);
  border-radius: 9999px;
  padding: 0.75rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  transition: all 0.3s var(--ease-out-expo);
  box-shadow: var(--shadow-sm);
}

.start-test-btn:hover {
  background-color: #000;
  transform: translateY(-1px);
}

.start-test-btn:active {
  transform: translateY(1px) scale(0.98);
}

/* Hero Section */
.hero-section {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 8rem 2rem 10rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.hero-badges {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 2rem;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUpStagger 1s var(--ease-out-expo) 0.05s forwards;
}

.hero-badge {
  background-color: rgba(225, 29, 72, 0.08);
  border: 1px solid rgba(225, 29, 72, 0.25);
  color: var(--color-accent-red);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.375rem 1rem;
  border-radius: 9999px;
  letter-spacing: 0.02em;
  transition: all 0.3s var(--ease-out-expo);
}

.hero-badge:hover {
  background-color: var(--color-accent-red);
  color: var(--color-canvas-white);
  transform: scale(1.05);
}

.hero-title {
  font-size: clamp(3rem, 8vw, 5rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 500;
  margin-bottom: 1.5rem;
  max-width: 64rem;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeUpStagger 1s var(--ease-out-expo) forwards;
}

.hero-subtitle {
  font-size: clamp(1.125rem, 3vw, 1.375rem);
  line-height: 1.6;
  color: var(--color-deep-slate);
  margin-bottom: 3.5rem;
  max-width: 48rem;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeUpStagger 1s var(--ease-out-expo) 0.15s forwards;
}

.hero-actions {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeUpStagger 1s var(--ease-out-expo) 0.3s forwards;
}

@media (min-width: 640px) {
  .hero-actions {
    flex-direction: row;
    gap: 1.5rem;
  }
}

.btn-primary {
  background-color: var(--color-accent-red);
  color: var(--color-canvas-white);
  border-radius: 9999px;
  padding: 1.125rem 2.5rem;
  font-size: 1rem;
  font-weight: 600;
  box-shadow: var(--shadow-button);
  transition: all 0.4s var(--ease-out-expo);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 15px -3px rgba(225, 29, 72, 0.3), 0 4px 6px -2px rgba(225, 29, 72, 0.15);
}

.btn-primary:active {
  transform: translateY(1px) scale(0.98);
}

.btn-primary svg {
  transition: transform 0.4s var(--ease-out-expo);
}

.btn-primary:hover svg {
  transform: translateX(4px);
}

.btn-secondary {
  background-color: transparent;
  border: 1px solid #e4e4e7;
  color: var(--color-ink-black);
  border-radius: 9999px;
  padding: 1.125rem 2.5rem;
  font-size: 1rem;
  font-weight: 600;
  transition: all 0.4s var(--ease-out-expo);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.btn-secondary:hover {
  border-color: #d4d4d8;
  background-color: #fafafa;
  transform: translateY(-2px);
}

.btn-secondary:active {
  transform: translateY(1px) scale(0.98);
}

/* About Section */
.about-section {
  width: 100%;
  background-color: var(--color-subtle-cream);
  padding: 8rem 0;
  border-top: 1px solid #e4e4e7;
  border-bottom: 1px solid #e4e4e7;
}

.about-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 4rem;
  align-items: center;
}

@media (min-width: 1024px) {
  .about-container {
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
  }
}

.about-title {
  font-size: clamp(2.5rem, 5vw, 3rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.about-desc {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--color-deep-slate);
  margin-bottom: 2.5rem;
  max-width: 32rem;
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.feature-icon {
  width: 24px;
  height: 24px;
  color: var(--color-accent-red);
  flex-shrink: 0;
}

.feature-text {
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--color-graphite);
}

.about-video {
  width: 100%;
  aspect-ratio: 16 / 9;
  background-color: var(--color-canvas-white);
  border-radius: 2rem;
  padding: 0.5rem;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  border: 1px solid #f4f4f5;
  transition: transform 0.5s var(--ease-spring), box-shadow 0.5s var(--ease-spring);
}

.about-video:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-card-hover);
}

.video-inner {
  position: absolute;
  inset: 0.5rem;
  background-color: #e4e4e7;
  border-radius: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.video-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.85;
  mix-blend-mode: multiply;
  transition: transform 1.2s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.about-video:hover .video-img {
  transform: scale(1.05);
}

.play-btn {
  width: 5rem;
  height: 5rem;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.1);
  z-index: 10;
  transition: transform 0.4s var(--ease-spring);
}

.about-video:hover .play-btn {
  transform: scale(1.15);
}

.play-icon {
  width: 2rem;
  height: 2rem;
  color: var(--color-accent-red);
  transform: translateX(2px);
}

/* Articles Section */
.articles-section {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 8rem 2rem;
}

.articles-header {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  margin-bottom: 4rem;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .articles-header {
    flex-direction: row;
    align-items: flex-end;
  }
}

.articles-title {
  font-size: clamp(2rem, 4vw, 2.5rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.articles-subtitle {
  font-size: 1.25rem;
  color: var(--color-ash-gray);
}

.articles-all-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-accent-red);
  font-weight: 600;
  font-size: 1rem;
  transition: opacity 0.3s;
}

.articles-all-btn:hover {
  opacity: 0.8;
}

.articles-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .articles-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
  }
}

.article-card {
  background-color: var(--color-canvas-white);
  border-radius: 1.5rem;
  padding: 2.5rem;
  border: 1px solid #f4f4f5;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: transform 0.5s var(--ease-spring), box-shadow 0.5s var(--ease-spring), border-color 0.5s ease;
}

.article-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-card-hover);
  border-color: #e4e4e7;
}

.article-date {
  font-size: 0.875rem;
  color: var(--color-ash-gray);
  margin-bottom: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.article-title {
  font-size: 1.75rem;
  line-height: 1.2;
  letter-spacing: -0.02em;
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 500;
  margin-bottom: 1.25rem;
  color: var(--color-ink-black);
}

.article-excerpt {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-deep-slate);
  margin-bottom: 2.5rem;
  flex-grow: 1;
}

.article-read-btn {
  color: var(--color-accent-red);
  font-size: 0.95rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: gap 0.3s var(--ease-out-expo);
  margin-top: auto;
  width: fit-content;
}

.article-card:hover .article-read-btn {
  gap: 0.75rem;
}


/* Test Section */
.test-section {
  width: 100%;
  padding: 8rem 2rem;
  background-color: var(--color-ink-black);
  color: var(--color-canvas-white);
  overflow: hidden;
  position: relative;
}

.test-bg-1 {
  position: absolute;
  top: 0;
  right: 0;
  width: 800px;
  height: 800px;
  background-color: rgba(225, 29, 72, 0.08);
  border-radius: 50%;
  filter: blur(80px);
  transform: translateY(-50%) translateX(33%);
}

.test-bg-2 {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 600px;
  height: 600px;
  background-color: rgba(225, 29, 72, 0.04);
  border-radius: 50%;
  filter: blur(80px);
  transform: translateY(33%) translateX(-25%);
}

.test-container {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.test-icon-wrapper {
  width: 5rem;
  height: 5rem;
  background-color: rgba(225, 29, 72, 0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 2.5rem;
  box-shadow: 0 0 0 1px rgba(225, 29, 72, 0.3);
}

.test-title {
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.1;
  font-weight: 600;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.test-desc {
  font-size: 1.25rem;
  line-height: 1.6;
  color: #a1a1aa;
  margin-bottom: 4rem;
  max-width: 40rem;
}

.test-box {
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 1.5rem;
  padding: 3rem;
  width: 100%;
  text-align: left;
  backdrop-filter: blur(12px);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.test-badge {
  background-color: var(--color-accent-red);
  color: var(--color-canvas-white);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.375rem 1rem;
  border-radius: 9999px;
  display: inline-block;
  margin-bottom: 2rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.test-question {
  font-size: 1.5rem;
  font-weight: 500;
  margin-bottom: 2.5rem;
  line-height: 1.4;
}

.test-options {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 640px) {
  .test-options {
    grid-template-columns: 1fr 1fr;
  }
}

.test-option {
  background-color: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--color-canvas-white);
  border-radius: 1rem;
  padding: 1.25rem;
  text-align: center;
  transition: all 0.3s var(--ease-out-expo);
  font-size: 1rem;
  font-weight: 500;
}

.test-option:hover {
  background-color: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.test-action {
  margin-top: 4rem;
  display: flex;
  justify-content: center;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 3rem;
}

/* Footer */
.footer {
  width: 100%;
  padding: 4rem 2rem;
  border-top: 1px solid #e4e4e7;
  background-color: var(--color-canvas-white);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.footer-container {
  width: 100%;
  max-width: 1200px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
}

@media (min-width: 768px) {
  .footer-container {
    flex-direction: row;
  }
}

.footer-copyright {
  font-size: 0.95rem;
  color: var(--color-ash-gray);
}

.footer-socials {
  display: flex;
  gap: 1.5rem;
}

.footer-socials a {
  color: var(--color-ash-gray);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.3s ease;
}

.footer-socials a:hover {
  color: var(--color-ink-black);
}

/* Scroll Animations */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes fadeUpStagger {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ─── Catalog page ─────────────────────────────────── */

.page-nav {
  width: 100%;
  max-width: 1200px;
  padding: 1.5rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.page-nav-back {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-ash-gray);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.3s ease;
}

.page-nav-back:hover {
  color: var(--color-ink-black);
}

.catalog-hero {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 2rem 3rem;
}

.catalog-hero-label {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent-red);
  margin-bottom: 1rem;
}

.catalog-hero-title {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: 1rem;
}

.catalog-hero-desc {
  font-size: 1.125rem;
  color: var(--color-ash-gray);
  max-width: 36rem;
  line-height: 1.6;
}

.catalog-controls {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

@media (min-width: 768px) {
  .catalog-controls {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.catalog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.filter-btn {
  padding: 0.5rem 1.125rem;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 600;
  border: 1px solid #e4e4e7;
  color: var(--color-ash-gray);
  background: var(--color-canvas-white);
  cursor: pointer;
  transition: all 0.25s ease;
}

.filter-btn:hover {
  border-color: var(--color-ink-black);
  color: var(--color-ink-black);
}

.filter-btn.active {
  background: var(--color-ink-black);
  border-color: var(--color-ink-black);
  color: var(--color-canvas-white);
}

.catalog-search-wrap {
  position: relative;
}

.catalog-search-wrap svg {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: var(--color-ash-gray);
  pointer-events: none;
}

.catalog-search {
  width: 100%;
  padding: 0.625rem 1rem 0.625rem 2.5rem;
  border: 1px solid #e4e4e7;
  border-radius: 9999px;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--color-ink-black);
  background: var(--color-canvas-white);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
  outline: none;
}

.catalog-search:focus {
  border-color: var(--color-accent-red);
  box-shadow: 0 0 0 3px rgba(225, 29, 72, 0.08);
}

.catalog-meta {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem 1.5rem;
  font-size: 0.875rem;
  color: var(--color-ash-gray);
}

.catalog-grid {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem 6rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .catalog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .catalog-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.catalog-card {
  background: var(--color-canvas-white);
  border: 1px solid #f0f0f0;
  border-radius: 1.25rem;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  transition: transform 0.4s var(--ease-spring), box-shadow 0.4s var(--ease-spring), border-color 0.3s ease;
  text-decoration: none;
  color: inherit;
}

.catalog-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
  border-color: #e4e4e7;
}

.catalog-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.catalog-card-category {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent-red);
}

.catalog-card-date {
  font-size: 0.8rem;
  color: var(--color-ash-gray);
  font-weight: 500;
}

.catalog-card-title {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.5rem;
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--color-ink-black);
}

.catalog-card-excerpt {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--color-ash-gray);
  flex-grow: 1;
}

.catalog-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.75rem;
  border-top: 1px solid #f4f4f5;
  margin-top: auto;
}

.catalog-card-read {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-accent-red);
  display: flex;
  align-items: center;
  gap: 0.375rem;
  transition: gap 0.3s ease;
}

.catalog-card:hover .catalog-card-read {
  gap: 0.625rem;
}

.catalog-card-time {
  font-size: 0.8rem;
  color: var(--color-ash-gray);
}

.catalog-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 4rem 2rem;
  color: var(--color-ash-gray);
  font-size: 1rem;
}

/* ─── Article page ─────────────────────────────────── */

.article-page-nav {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  padding: 1.75rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.article-nav-section {
  font-size: 0.875rem;
  color: var(--color-ash-gray);
}

@media (max-width: 480px) {
  .article-nav-section {
    display: none;
  }
}

.logo-subtext {
}

@media (max-width: 768px) {
  .logo-subtext {
    display: none;
  }
}

.article-back-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-ash-gray);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.3s ease;
}

.article-back-link:hover {
  color: var(--color-ink-black);
}

.article-header {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 2rem 3rem;
  border-bottom: 1px solid #f0f0f0;
}

.article-category-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent-red);
  margin-bottom: 1.25rem;
}

.article-headline {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--color-ink-black);
  margin-bottom: 1.5rem;
}

.article-meta-row {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.875rem;
  color: var(--color-ash-gray);
  flex-wrap: wrap;
}

.article-meta-row span {
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

.article-lead {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  padding: 2.5rem 2rem 0;
  font-family: var(--font-serif);
  font-size: 1.375rem;
  line-height: 1.65;
  color: var(--color-graphite);
  font-style: italic;
}

.article-body {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 2rem 5rem;
}

.article-body p {
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--color-graphite);
  margin-bottom: 1.75rem;
}

.article-body h2 {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.875rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--color-ink-black);
  margin: 2.5rem 0 1rem;
  line-height: 1.2;
}

.article-body h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-ink-black);
  margin: 2rem 0 0.75rem;
}

.article-body blockquote {
  border-left: 3px solid var(--color-accent-red);
  margin: 2rem 0;
  padding: 0.25rem 0 0.25rem 1.5rem;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.25rem;
  line-height: 1.6;
  color: var(--color-ink-black);
}

.article-body ul {
  margin: 1.25rem 0 1.75rem 1.25rem;
  list-style: disc;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.article-body ul li {
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--color-graphite);
  padding-left: 0.25rem;
}

.article-body strong {
  font-weight: 600;
  color: var(--color-ink-black);
}

.article-divider {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  border: none;
  border-top: 1px solid #f0f0f0;
}

.article-footer-nav {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  padding: 2.5rem 2rem 5rem;
  display: flex;
  justify-content: center;
}

.article-back-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-accent-red);
  font-weight: 600;
  font-size: 0.9375rem;
  transition: opacity 0.3s ease;
}

.article-back-btn:hover {
  opacity: 0.75;
}

/* Nav desktop visibility */
@media (min-width: 768px) {
  .nav-links { display: flex; }
  .login-btn { display: block; }
}

/* Tests grid styling */
.tests-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  width: 100%;
  max-width: 1000px;
  margin-top: 3rem;
}

@media (min-width: 640px) {
  .tests-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .tests-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.test-card {
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 1.5rem;
  padding: 2.5rem;
  text-align: left;
  backdrop-filter: blur(12px);
  box-shadow: 0 15px 35px -10px rgba(0, 0, 0, 0.3);
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: all 0.4s var(--ease-out-expo);
}

.test-card:hover {
  background-color: rgba(255, 255, 255, 0.06);
  border-color: rgba(225, 29, 72, 0.4);
  transform: translateY(-5px);
  box-shadow: 0 20px 40px -15px rgba(225, 29, 72, 0.2);
}

.test-card-badge {
  background-color: var(--color-accent-red);
  color: var(--color-canvas-white);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  display: inline-block;
  align-self: flex-start;
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.test-card-title {
  font-size: 1.35rem;
  font-weight: 600;
  margin-bottom: 1rem;
  line-height: 1.3;
  color: var(--color-canvas-white);
}

.test-card-desc {
  font-size: 0.95rem;
  line-height: 1.5;
  color: #a1a1aa;
  margin-bottom: 2rem;
  flex-grow: 1;
}

.test-card-btn {
  color: var(--color-accent-red);
  font-size: 0.95rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.3s var(--ease-out-expo);
  margin-top: auto;
  width: fit-content;
}

.test-card:hover .test-card-btn {
  color: var(--color-canvas-white);
  transform: translateX(4px);
}