/* ============================================
   AISearchLab — Style Sheet
   Theme: Black/White Research Pro
   ============================================ */

/* ── Design Tokens ── */
:root,
[data-theme='light'] {
  --color-bg: #ffffff;
  --color-surface: #f8f8f8;
  --color-surface-2: #f2f2f2;
  --color-border: #e0e0e0;
  --color-divider: #ebebeb;
  --color-text: #0a0a0a;
  --color-text-muted: #666666;
  --color-text-faint: #aaaaaa;
  --color-text-inverse: #ffffff;
  --color-primary: #0a0a0a;
  --color-primary-hover: #333333;
  --color-accent: #0a0a0a;

  --font-display: 'Switzer', 'Helvetica Neue', sans-serif;
  --font-body: 'Inter', 'Helvetica Neue', sans-serif;

  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  --radius-sm: 3px;
  --radius-md: 6px;
  --radius-lg: 10px;
  --radius-full: 9999px;

  --transition: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);

  --content-narrow: 640px;
  --content-default: 1080px;
  --content-wide: 1280px;
}

[data-theme='dark'] {
  --color-bg: #080808;
  --color-surface: #111111;
  --color-surface-2: #1a1a1a;
  --color-border: #222222;
  --color-divider: #1c1c1c;
  --color-text: #f0f0f0;
  --color-text-muted: #888888;
  --color-text-faint: #444444;
  --color-text-inverse: #080808;
  --color-primary: #f0f0f0;
  --color-primary-hover: #cccccc;
  --color-accent: #ffffff;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.6);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    --color-bg: #080808;
    --color-surface: #111111;
    --color-surface-2: #1a1a1a;
    --color-border: #222222;
    --color-divider: #1c1c1c;
    --color-text: #f0f0f0;
    --color-text-muted: #888888;
    --color-text-faint: #444444;
    --color-text-inverse: #080808;
    --color-primary: #f0f0f0;
    --color-primary-hover: #cccccc;
    --color-accent: #ffffff;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.5);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.6);
  }
}

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color 0.3s ease, color 0.3s ease;
}

img, picture, video, canvas, svg { display: block; max-width: 100%; }
ul[role='list'], ol[role='list'] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }

h1, h2, h3, h4, h5, h6 {
  text-wrap: balance;
  line-height: 1.1;
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.02em;
}

p, li { text-wrap: pretty; }

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition), opacity var(--transition);
}

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

:focus-visible {
  outline: 1.5px solid var(--color-text);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

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

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ── Layout ── */
.container {
  width: 100%;
  max-width: var(--content-default);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* ── Typography Utilities ── */
.section-label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.section-title {
  font-size: var(--text-2xl);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: var(--space-12);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-weight: 450;
  letter-spacing: 0.01em;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  white-space: nowrap;
  cursor: pointer;
  text-decoration: none;
}

.btn-sm { font-size: var(--text-xs); padding: var(--space-2) var(--space-4); }
.btn-lg { font-size: var(--text-sm); padding: var(--space-4) var(--space-8); }
.btn-full { width: 100%; justify-content: center; padding: var(--space-4) var(--space-6); font-size: var(--text-sm); }

.btn-primary {
  background: var(--color-text);
  color: var(--color-bg);
  border: 1px solid var(--color-text);
}
.btn-primary:hover {
  background: var(--color-text-muted);
  border-color: var(--color-text-muted);
  opacity: 0.9;
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.btn-ghost:hover {
  color: var(--color-text);
  border-color: var(--color-text-muted);
}

/* ── Navigation ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--color-bg) 90%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition), border-color var(--transition);
}

.nav-inner {
  max-width: var(--content-default);
  margin: 0 auto;
  padding: 0 var(--space-6);
  height: 64px;
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
  color: var(--color-text);
}

.logo-text {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  margin-left: var(--space-4);
}

.nav-links a {
  font-size: var(--text-xs);
  font-weight: 450;
  letter-spacing: 0.02em;
  color: var(--color-text-muted);
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--color-text); }

.nav-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.theme-toggle {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}
.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface);
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  color: var(--color-text);
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: currentColor;
  transition: all var(--transition);
}

.nav-mobile {
  display: none;
  flex-direction: column;
  padding: var(--space-6);
  gap: var(--space-4);
  border-top: 1px solid var(--color-border);
}
.nav-mobile a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding: var(--space-2) 0;
}
.nav-mobile a:hover { color: var(--color-text); }
.nav-mobile.open { display: flex; }

@media (max-width: 768px) {
  .nav-links, .nav-actions .btn-primary { display: none; }
  .nav-hamburger { display: flex; }
  .nav-actions { margin-left: auto; }
}

/* ── Hero ── */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--color-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.4;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding-block: var(--space-24);
  max-width: 800px;
}

.hero-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  width: fit-content;
}

.dot {
  width: 6px;
  height: 6px;
  background: var(--color-text);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero-headline {
  font-size: var(--text-3xl);
  font-weight: 400;
  letter-spacing: -0.04em;
  line-height: 1.0;
  margin-bottom: var(--space-8);
  color: var(--color-text);
}

.hero-sub {
  font-size: var(--text-lg);
  font-weight: 300;
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 600px;
  margin-bottom: var(--space-10);
}

.hero-cta {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-12);
}

.hero-platforms {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.platform-label {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.05em;
}

.platform-list {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.platform-list span {
  font-size: var(--text-xs);
  font-weight: 450;
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
}

.platform-list .divider {
  color: var(--color-text-faint);
  font-weight: 300;
}

/* ── Stats Bar ── */
.stats-bar {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.stats-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-8);
  flex-wrap: wrap;
  gap: var(--space-6);
}

.stat {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.stat-num {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 500;
  letter-spacing: -0.03em;
  color: var(--color-text);
  line-height: 1;
}

.stat-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: 400;
  letter-spacing: 0.02em;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--color-border);
  flex-shrink: 0;
}

@media (max-width: 768px) {
  .stat-divider { display: none; }
  .stats-inner { justify-content: flex-start; }
  .stat { flex: 1 1 calc(50% - var(--space-6)); }
}

/* ── Why Section ── */
.why-section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
  border-bottom: 1px solid var(--color-border);
}

.why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

.why-left h2 {
  font-size: var(--text-2xl);
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1.15;
  position: sticky;
  top: 100px;
}

.why-right {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.why-right p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.75;
}

.why-stat-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  margin-top: var(--space-8);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border);
}

.why-stat {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.why-stat-num {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--color-text);
}

.why-stat-desc {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.5;
}

@media (max-width: 768px) {
  .why-grid { grid-template-columns: 1fr; gap: var(--space-10); }
  .why-left h2 { position: static; }
}

/* ── Products Section ── */
.products-section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
  border-bottom: 1px solid var(--color-border);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
}

.product-card {
  background: var(--color-bg);
  padding: var(--space-10);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  transition: background var(--transition);
}

.product-card:hover { background: var(--color-surface); }

.product-card--featured {
  background: var(--color-surface);
}

.product-num {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--color-text-faint);
}

.product-icon {
  color: var(--color-text-muted);
  margin-top: var(--space-2);
}

.product-card h3 {
  font-size: var(--text-lg);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.product-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  flex: 1;
}

.product-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: auto;
}

.product-tags span {
  font-size: var(--text-xs);
  padding: 3px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
}

.product-link {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-text);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
  transition: opacity var(--transition);
}
.product-link:hover { opacity: 0.6; }

@media (max-width: 900px) {
  .products-grid { grid-template-columns: 1fr; }
}

/* ── Process Section ── */
.process-section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
  border-bottom: 1px solid var(--color-border);
}

.process-steps {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.process-step {
  flex: 1;
  min-width: 180px;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-8);
  border: 1px solid var(--color-border);
}

.step-num {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--color-text-faint);
}

.process-step h4 {
  font-size: var(--text-base);
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.process-step p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
}

.process-arrow {
  align-self: center;
  color: var(--color-text-faint);
  font-size: var(--text-lg);
  font-weight: 300;
  flex-shrink: 0;
  padding-bottom: var(--space-8);
}

@media (max-width: 900px) {
  .process-steps { flex-direction: column; }
  .process-arrow { transform: rotate(90deg); align-self: flex-start; margin-left: var(--space-8); }
}

/* ── Consulting Section ── */
.consulting-section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.consulting-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

.consulting-left {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.consulting-left h2 {
  font-size: var(--text-2xl);
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.consulting-left p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.75;
}

.consulting-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.consulting-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.consulting-list svg {
  flex-shrink: 0;
  margin-top: 3px;
  color: var(--color-text);
}

/* ── Audit Form Card ── */
.audit-form-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: var(--space-10);
  position: sticky;
  top: 100px;
}

.audit-form-card h3 {
  font-size: var(--text-lg);
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-3);
}

.audit-sub {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-8);
}

.audit-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-group label {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  text-transform: uppercase;
}

.form-group input {
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  color: var(--color-text);
  transition: border-color var(--transition);
  outline: none;
}

.form-group input:focus {
  border-color: var(--color-text-muted);
}

.form-group input::placeholder {
  color: var(--color-text-faint);
}

.form-note {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-align: center;
  margin-top: var(--space-2);
}

@media (max-width: 900px) {
  .consulting-inner { grid-template-columns: 1fr; }
  .audit-form-card { position: static; }
}

/* ── About Section ── */
.about-section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
  border-bottom: 1px solid var(--color-border);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-16);
  align-items: start;
}

.about-left h2 {
  font-size: var(--text-2xl);
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1.15;
  position: sticky;
  top: 100px;
}

.about-right {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.about-right p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.75;
}

.about-mission {
  border-left: 2px solid var(--color-text);
  padding-left: var(--space-6);
  font-size: var(--text-base);
  color: var(--color-text);
  font-style: normal;
  font-weight: 400;
  line-height: 1.65;
  margin-top: var(--space-4);
}

@media (max-width: 768px) {
  .about-grid { grid-template-columns: 1fr; gap: var(--space-10); }
  .about-left h2 { position: static; }
}

/* ── Footer ── */
.footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

.footer-inner {
  display: flex;
  gap: var(--space-16);
  padding-block: var(--space-16);
  flex-wrap: wrap;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  min-width: 200px;
  flex: 1;
}

.footer-brand .logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.footer-brand .logo span {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
}

.footer-tagline {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.02em;
}

.footer-links {
  display: flex;
  gap: var(--space-16);
  flex-wrap: wrap;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  min-width: 120px;
}

.footer-col-title {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.footer-col a {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--color-text); }

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-6);
}

.footer-bottom .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-bottom span {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

/* ── Scroll Reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Site Main ── */
.site-main {
  min-height: 60vh;
}

/* ── Page Content ── */
.page-content,
.single-content {
  padding-block: clamp(3rem, 6vw, 6rem);
  max-width: 780px;
}

.page-article__header,
.single-article__header {
  margin-bottom: var(--space-10);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--color-border);
}

.page-article__title,
.single-article__title {
  font-size: var(--text-2xl);
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: var(--space-4);
}

.single-article__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
}

.single-article__excerpt {
  font-size: var(--text-lg);
  font-weight: 300;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-top: var(--space-4);
}

.single-article__source {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-top: var(--space-4);
  word-break: break-all;
}

.single-article__body {
  font-size: var(--text-base);
  line-height: 1.8;
  color: var(--color-text);
}

.single-article__body h2 {
  font-size: var(--text-lg);
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-top: var(--space-10);
  margin-bottom: var(--space-4);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.single-article__body p {
  margin-bottom: var(--space-5);
  color: var(--color-text-muted);
}

.single-article__body ul,
.single-article__body ol {
  margin: var(--space-5) 0;
  padding-left: var(--space-6);
}

.single-article__body li {
  margin-bottom: var(--space-2);
  color: var(--color-text-muted);
}

.single-article__body a {
  color: var(--color-text);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.single-article__footer {
  margin-top: var(--space-12);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border);
}

.page-article__body {
  font-size: var(--text-base);
  line-height: 1.8;
  color: var(--color-text-muted);
}

/* Nav active link */
.nav-links a.current { color: var(--color-text); }