/* ============================================================
   ClaudeAINews – Main Stylesheet
   ============================================================ */

/* ── CSS Reset ───────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  background: none;
}

/* ── Design Tokens ───────────────────────────────────────── */
:root {
  --color-bg: #F4F3EE;
  --color-surface: #FFFFFF;
  --color-surface-2: #FAF9F6;
  --color-surface-3: #F0EDE6;
  --color-border: #E8E4DC;
  --color-border-hover: #C9C3B8;
  --color-text: #1A1714;
  --color-text-muted: #6B6560;
  --color-text-faint: #B1ADA1;
  --color-accent: #C15F3C;
  --color-accent-hover: #A84E30;
  --color-accent-light: #F5E8E2;
  --color-models: #C15F3C;
  --color-research: #B8722A;
  --color-products: #3D6E9A;
  --color-industry: #2E7A52;
  --color-guides: #8B6B4A;
  --font-sans: 'Plus Jakarta Sans', system-ui, sans-serif;
  --font-serif: 'Source Serif 4', Georgia, serif;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 2px 12px rgba(26,23,20,0.08);
  --shadow-lg: 0 8px 32px rgba(26,23,20,0.12);
  --transition: 0.2s ease;
}

/* ── Layout Utilities ────────────────────────────────────── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Site Header ─────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 32px;
  height: 64px;
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--color-text);
  letter-spacing: -0.02em;
  white-space: nowrap;
  flex-shrink: 0;
}

.logo-icon {
  font-size: 1.4rem;
  color: var(--color-accent);
  line-height: 1;
}

.logo-accent {
  color: var(--color-accent);
}

/* Main nav */
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}

.main-nav a {
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition), background var(--transition);
}

.main-nav a:hover {
  color: var(--color-accent);
  background: var(--color-accent-light);
}

.main-nav a.nav-active {
  color: var(--color-accent);
  background: var(--color-accent-light);
  font-weight: 600;
}

/* Header actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  transition: background var(--transition), color var(--transition);
}

.nav-toggle:hover {
  background: var(--color-surface-3);
  color: var(--color-text);
}

.btn-subscribe {
  display: inline-flex;
  align-items: center;
  padding: 8px 18px;
  background: var(--color-accent);
  color: #fff;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 600;
  transition: background var(--transition), transform var(--transition);
  white-space: nowrap;
}

.btn-subscribe:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
}

/* ── Breaking News Bar ───────────────────────────────────── */
.breaking-bar {
  background: #EDE9E1;
  border-bottom: 1px solid var(--color-border);
  padding: 10px 0;
  overflow: hidden;
}

.breaking-bar .container {
  display: flex;
  align-items: center;
  gap: 12px;
}

.breaking-label {
  flex-shrink: 0;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  padding: 3px 8px;
  border-radius: 4px;
}

.breaking-text {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ── Category Badges ─────────────────────────────────────── */
.category-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.category-badge-inline {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.category-models {
  background: rgba(193,95,60,0.12);
  color: #C15F3C;
  border: 1px solid rgba(193,95,60,0.3);
}

.category-research {
  background: rgba(184,114,42,0.12);
  color: #B8722A;
  border: 1px solid rgba(184,114,42,0.3);
}

.category-products {
  background: rgba(61,110,154,0.12);
  color: #3D6E9A;
  border: 1px solid rgba(61,110,154,0.3);
}

.category-industry {
  background: rgba(46,122,82,0.12);
  color: #2E7A52;
  border: 1px solid rgba(46,122,82,0.3);
}

/* ── Hero Section ────────────────────────────────────────── */
.hero {
  padding: 40px 0 48px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 28px;
  align-items: start;
}

/* Featured article */
.hero-main {
  background: var(--color-surface);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
}

.hero-main:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.hero-image-wrap {
  position: relative;
  border-radius: 12px 12px 0 0;
  overflow: hidden;
}

.hero-img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.hero-main:hover .hero-img {
  transform: scale(1.02);
}

.hero-image-wrap .category-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
}

.hero-main .article-content {
  padding: 24px 28px 28px;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 1.85rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
  margin: 10px 0 12px;
  letter-spacing: -0.02em;
}

.hero-main .article-excerpt {
  font-size: 1rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* Hero sidebar */
.hero-sidebar {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sidebar-article {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow var(--transition), border-color var(--transition);
}

.sidebar-article:hover {
  box-shadow: var(--shadow);
  border-color: var(--color-border-hover);
}

.sidebar-article .article-link {
  display: flex;
  gap: 14px;
  padding: 16px;
  align-items: flex-start;
}

.sidebar-img {
  width: 100px;
  height: 72px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.sidebar-article .article-content {
  flex: 1;
  min-width: 0;
}

.sidebar-article .article-title {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-text);
  margin-top: 4px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ── Article Meta ────────────────────────────────────────── */
.article-link {
  display: block;
  color: inherit;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  color: var(--color-text-faint);
  margin-bottom: 4px;
}

.dot {
  color: var(--color-text-faint);
}

.read-time {
  color: var(--color-text-faint);
}

.author {
  font-weight: 600;
  color: var(--color-text-muted);
}

/* ── Section Headers ─────────────────────────────────────── */
.news-section {
  padding: 16px 0 56px;
}

.section-header {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--color-border);
  position: relative;
}

.section-header::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 48px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
}

.section-title {
  font-family: var(--font-sans);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.section-count {
  font-size: 0.8rem;
  color: var(--color-text-faint);
  font-weight: 500;
}

/* ── Card Grid ───────────────────────────────────────────── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

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

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

/* News Card */
.news-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow var(--transition), border-color var(--transition), transform var(--transition);
  display: flex;
  flex-direction: column;
}

.news-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--color-border-hover);
  transform: translateY(-3px);
  border-left: 3px solid var(--color-accent);
}

.card-image-wrap {
  position: relative;
  border-radius: 12px 12px 0 0;
  overflow: hidden;
  flex-shrink: 0;
}

.card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  transition: transform var(--transition);
}

.news-card:hover .card-img {
  transform: scale(1.03);
}

.card-image-wrap .category-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
}

.news-card .article-content {
  padding: 18px 20px 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.news-card .article-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--color-text);
  margin: 8px 0 10px;
  letter-spacing: -0.01em;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color var(--transition);
}

.news-card:hover .article-title {
  color: var(--color-accent);
}

.news-card .article-excerpt {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--color-border);
}

.card-author {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.card-date {
  font-size: 0.78rem;
  color: var(--color-text-faint);
}

.read-more-link {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--transition);
}

.read-more-link:hover {
  gap: 8px;
}

/* ── Newsletter Section ──────────────────────────────────── */
.newsletter-section {
  padding: 64px 0;
}

.newsletter-card {
  background: linear-gradient(135deg, #FEF4EE 0%, #FAF9F6 60%, #F0EDE6 100%);
  border: 1px solid rgba(193,95,60,0.2);
  border-radius: 20px;
  padding: 56px 48px;
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
  box-shadow: var(--shadow);
}

.newsletter-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.newsletter-desc {
  font-size: 1rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 28px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.newsletter-form {
  display: flex;
  gap: 10px;
  max-width: 440px;
  margin: 0 auto 14px;
}

.newsletter-input {
  flex: 1;
  padding: 12px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: 999px;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--color-text);
  background: var(--color-surface);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.newsletter-input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(193,95,60,0.12);
}

.newsletter-btn {
  padding: 12px 22px;
  background: var(--color-accent);
  color: #fff;
  border-radius: 999px;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 700;
  white-space: nowrap;
  transition: background var(--transition), transform var(--transition);
}

.newsletter-btn:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
}

.newsletter-note {
  font-size: 0.8rem;
  color: var(--color-text-faint);
}

/* ── Site Footer ─────────────────────────────────────────── */
.site-footer {
  background: #2b2a27;
  color: rgba(255,255,255,0.75);
  padding: 56px 0 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  margin-bottom: 40px;
}

.footer-brand .site-logo {
  color: #fff;
  margin-bottom: 14px;
  display: inline-flex;
}

.footer-brand .logo-icon {
  color: var(--color-accent);
}

.footer-brand .logo-accent {
  color: var(--color-accent);
}

.footer-tagline {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.5);
  line-height: 1.6;
  max-width: 300px;
  margin-bottom: 20px;
}

.footer-social {
  display: flex;
  gap: 10px;
}

.footer-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.6);
  transition: background var(--transition), color var(--transition);
  font-size: 0.85rem;
}

.footer-social a:hover {
  background: var(--color-accent);
  color: #fff;
}

.footer-links {
  display: flex;
  gap: 48px;
}

.footer-col h4 {
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.35);
  margin-bottom: 14px;
}

.footer-col a {
  display: block;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.6);
  margin-bottom: 10px;
  transition: color var(--transition);
}

.footer-col a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.3);
}

/* ── Static Pages (models, about) ────────────────────────── */
.static-page {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Page Hero with overlay */
.page-hero {
  position: relative;
  height: 360px;
  overflow: hidden;
  margin-bottom: 0;
}

.page-hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(26,23,20,0.75) 0%, rgba(26,23,20,0.25) 60%, transparent 100%);
  display: flex;
  align-items: flex-end;
  padding: 40px 48px;
}

.page-hero-title {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.03em;
  line-height: 1.1;
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

/* ── Models Page ─────────────────────────────────────────── */
.models-intro {
  padding: 48px 0 16px;
}

.models-intro-text {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 720px;
}

.model-cards-section {
  padding: 32px 0 56px;
}

.model-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 56px;
}

.model-card {
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
  position: relative;
}

.model-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.model-card.recommended {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent);
}

.model-card-header {
  padding: 24px 24px 20px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface-2);
}

.recommended-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  background: var(--color-accent);
  color: #fff;
  border-radius: 999px;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.model-name {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}

.model-tagline {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.model-card-body {
  padding: 20px 24px 24px;
}

.model-specs {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.spec-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.875rem;
}

.spec-row:last-child {
  border-bottom: none;
}

.spec-label {
  color: var(--color-text-muted);
  font-weight: 500;
}

.spec-value {
  color: var(--color-text);
  font-weight: 600;
  text-align: right;
}

.spec-value.accent {
  color: var(--color-accent);
}

.model-cta {
  display: block;
  width: 100%;
  margin-top: 20px;
  padding: 11px;
  background: var(--color-accent-light);
  color: var(--color-accent);
  text-align: center;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 700;
  transition: background var(--transition), color var(--transition);
}

.model-cta:hover {
  background: var(--color-accent);
  color: #fff;
}

/* Benchmark Table */
.benchmark-section {
  padding: 0 0 56px;
}

.benchmark-section .section-header {
  margin-bottom: 24px;
}

.benchmark-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: var(--shadow);
}

.benchmark-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.benchmark-table th {
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 14px 20px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

.benchmark-table td {
  padding: 14px 20px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
  vertical-align: middle;
}

.benchmark-table tr:last-child td {
  border-bottom: none;
}

.benchmark-table tr:hover td {
  background: var(--color-surface-2);
}

.benchmark-table .model-col {
  font-weight: 700;
  font-family: var(--font-serif);
}

.benchmark-table .highlight-row td {
  background: var(--color-accent-light);
  font-weight: 600;
}

.thinking-section {
  padding: 0 0 56px;
}

.thinking-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px 36px;
  box-shadow: var(--shadow);
}

.thinking-card h3 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
}

.thinking-card p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 12px;
}

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

.console-cta {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 24px;
}

.console-cta h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
}

.console-cta p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.console-cta .btn-primary {
  flex-shrink: 0;
  padding: 11px 24px;
  background: var(--color-accent);
  color: #fff;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 700;
  white-space: nowrap;
  transition: background var(--transition), transform var(--transition);
}

.console-cta .btn-primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
}

/* ── About Page ──────────────────────────────────────────── */
.about-content {
  padding: 56px 0;
}

.about-section {
  margin-bottom: 56px;
}

.about-section:last-child {
  margin-bottom: 0;
}

.about-section-title {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-border);
  position: relative;
}

.about-section-title::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 40px;
  height: 2px;
  background: var(--color-accent);
}

.about-text {
  font-size: 1rem;
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: 16px;
}

.about-text:last-child {
  margin-bottom: 0;
}

/* Timeline */
.timeline {
  position: relative;
  padding-left: 24px;
  margin-top: 20px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.timeline-item {
  position: relative;
  margin-bottom: 24px;
  padding-left: 20px;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -24px;
  top: 6px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 2px solid var(--color-bg);
  box-shadow: 0 0 0 2px var(--color-accent);
}

.timeline-year {
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.timeline-event {
  font-size: 0.95rem;
  color: var(--color-text);
  font-weight: 600;
  margin-bottom: 4px;
}

.timeline-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* Principle Cards */
.principle-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 24px;
}

.principle-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  transition: box-shadow var(--transition);
}

.principle-card:hover {
  box-shadow: var(--shadow);
}

.principle-icon {
  font-size: 1.5rem;
  margin-bottom: 12px;
}

.principle-title {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.principle-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

.disclaimer-card {
  background: var(--color-surface-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  text-align: center;
}

/* ── Article Page ────────────────────────────────────────── */
.article-page {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px 24px 64px;
}

.article-breadcrumb {
  font-size: 0.8rem;
  color: var(--color-text-faint);
  margin-bottom: 28px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.article-breadcrumb a {
  color: var(--color-text-muted);
  transition: color var(--transition);
}

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

.article-page-header {
  margin-bottom: 32px;
}

.article-page-header .category-badge {
  margin-bottom: 16px;
}

.article-page-title {
  font-family: var(--font-serif);
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1.15;
  color: var(--color-text);
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.article-page-excerpt {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  font-family: var(--font-serif);
  font-style: italic;
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border);
}

.article-byline {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 0;
}

.byline-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--color-accent);
  font-size: 0.85rem;
  flex-shrink: 0;
}

.author-name {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--color-text);
}

.article-date {
  font-size: 0.8rem;
  color: var(--color-text-faint);
}

.hero-cover {
  margin-bottom: 40px;
  border-radius: var(--radius);
  overflow: hidden;
}

.article-hero-img {
  width: 100%;
  height: 460px;
  object-fit: cover;
  display: block;
}

/* Article Body */
.article-body {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--color-text);
}

.article-body p {
  margin-bottom: 1.5em;
}

.article-body h2 {
  font-family: var(--font-sans);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.02em;
  margin: 2em 0 0.75em;
  line-height: 1.2;
}

.article-body h3 {
  font-family: var(--font-sans);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 1.5em 0 0.5em;
}

.article-body ul,
.article-body ol {
  margin-bottom: 1.5em;
  padding-left: 1.5em;
}

.article-body ul li {
  list-style: disc;
  margin-bottom: 0.4em;
  font-size: 1rem;
  color: var(--color-text-muted);
}

.article-body ol li {
  list-style: decimal;
  margin-bottom: 0.4em;
}

.article-body blockquote {
  margin: 2em 0;
  padding: 20px 24px 20px 28px;
  background: var(--color-surface-2);
  border-left: 4px solid var(--color-accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  color: var(--color-text-muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.article-body blockquote cite {
  display: block;
  margin-top: 10px;
  font-size: 0.8rem;
  font-style: normal;
  font-weight: 700;
  color: var(--color-text-faint);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.callout-box {
  margin: 2em 0;
  background: var(--color-accent-light);
  border: 1px solid rgba(193,95,60,0.25);
  border-radius: var(--radius);
  padding: 24px 28px;
}

.callout-box h4 {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 14px;
}

.callout-box ul {
  padding-left: 0;
  margin-bottom: 0;
}

.callout-box ul li {
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid rgba(193,95,60,0.15);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--color-text);
}

.callout-box ul li:last-child {
  border-bottom: none;
}

.callout-box ul li strong {
  color: var(--color-accent);
  font-weight: 700;
}

.callout-box p {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 0.75em;
}

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

.callout-box code {
  font-family: 'Courier New', monospace;
  font-size: 0.82rem;
  background: rgba(193,95,60,0.08);
  padding: 10px 14px;
  border-radius: 4px;
  color: var(--color-text);
  display: block;
  margin-top: 8px;
  white-space: pre;
  overflow-x: auto;
  line-height: 1.5;
}

/* Article Tags */
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

.article-tag {
  padding: 5px 12px;
  background: var(--color-surface-3);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 0.78rem;
  color: var(--color-text-muted);
  font-weight: 600;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}

.article-tag:hover {
  background: var(--color-accent-light);
  border-color: rgba(193,95,60,0.3);
  color: var(--color-accent);
}

/* Related Section */
.related-section {
  background: var(--color-surface-2);
  border-top: 1px solid var(--color-border);
  padding: 48px 0 64px;
}

/* ── Mobile Responsive ───────────────────────────────────── */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    align-items: flex-start;
    padding: 12px 24px 16px;
    gap: 2px;
    box-shadow: var(--shadow);
    z-index: 99;
  }

  .main-nav.nav-open {
    display: flex;
  }

  .main-nav a {
    width: 100%;
    padding: 10px 12px;
    font-size: 1rem;
  }

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

  .hero-img {
    height: 240px;
  }

  .hero-title {
    font-size: 1.4rem;
  }

  .card-grid,
  .card-grid.two-col,
  .card-grid.three-col {
    grid-template-columns: 1fr;
  }

  .model-cards-grid {
    grid-template-columns: 1fr;
  }

  .principle-cards {
    grid-template-columns: 1fr;
  }

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

  .footer-links {
    flex-wrap: wrap;
    gap: 32px;
  }

  .newsletter-form {
    flex-direction: column;
  }

  .newsletter-card {
    padding: 36px 24px;
  }

  .article-page-title {
    font-size: 1.7rem;
  }

  .article-hero-img {
    height: 240px;
  }

  .page-hero {
    height: 240px;
  }

  .page-hero-overlay {
    padding: 24px;
  }

  .page-hero-title {
    font-size: 1.7rem;
  }

  .benchmark-table th,
  .benchmark-table td {
    padding: 10px 12px;
    font-size: 0.8rem;
  }

  .console-cta {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .breaking-text {
    font-size: 0.78rem;
  }

  .article-body {
    font-size: 1rem;
  }

  .article-body h2 {
    font-size: 1.2rem;
  }
}