/* =============================================
   TIDAL SHIFT — Design Tokens & Component Styles
   Dark editorial. Deep navy/black. Bold type.
   ============================================= */

/* ---- TYPE SCALE ---- */
:root {
  --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);
  --text-hero: clamp(3rem,     0.5rem  + 7vw,    8rem);
}

/* ---- SPACING ---- */
:root {
  --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;
}

/* ---- TIDAL SHIFT PALETTE ----
   Dark editorial: near-black base, deep navy tones,
   electric teal accent, warm off-white text
   ---------------------------------------- */
:root, [data-theme="dark"] {
  /* Surfaces */
  --color-bg:              #0a0c10;
  --color-surface:         #0e1118;
  --color-surface-2:       #131720;
  --color-surface-offset:  #161b25;
  --color-surface-offset-2:#1b2130;
  --color-surface-dynamic: #202840;
  --color-divider:         #1e2535;
  --color-border:          #2a3348;

  /* Text — warm off-white for the dark editorial feel */
  --color-text:            #e8e6df;
  --color-text-muted:      #8892a4;
  --color-text-faint:      #4a5568;
  --color-text-inverse:    #0a0c10;

  /* Primary accent — electric teal */
  --color-primary:         #00d4c8;
  --color-primary-hover:   #00b8ad;
  --color-primary-active:  #009d93;
  --color-primary-highlight: #0d2a28;

  /* Secondary — deep blue for subtle highlights */
  --color-secondary:       #1a4b8c;
  --color-secondary-light: #2d6bc4;

  /* Warm gold — used sparingly for pull quotes / accents */
  --color-gold:            #c9a227;
  --color-gold-hover:      #b08d1e;

  /* Error / Warning */
  --color-error:           #e05c5c;
  --color-warning:         #e07c2c;
  --color-success:         #4caf7d;

  /* Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Shadows */
  --shadow-sm: 0 1px 3px oklch(0 0 0 / 0.4);
  --shadow-md: 0 4px 16px oklch(0 0 0 / 0.5);
  --shadow-lg: 0 12px 40px oklch(0 0 0 / 0.6);

  /* Content widths */
  --content-narrow: 660px;
  --content-default: 960px;
  --content-wide: 1200px;

  /* Fonts */
  --font-display: 'Clash Display', 'Helvetica Neue', sans-serif;
  --font-body:    'Satoshi', 'Helvetica Neue', sans-serif;
}

/* Light mode override */
[data-theme="light"] {
  --color-bg:              #f4f2ed;
  --color-surface:         #f8f6f1;
  --color-surface-2:       #faf9f6;
  --color-surface-offset:  #ede9e1;
  --color-surface-offset-2:#e5e0d6;
  --color-surface-dynamic: #d8d3c8;
  --color-divider:         #ccc7bb;
  --color-border:          #bbb5a8;
  --color-text:            #1a1c22;
  --color-text-muted:      #5c6070;
  --color-text-faint:      #9098aa;
  --color-text-inverse:    #f4f2ed;
  --color-primary:         #007c76;
  --color-primary-hover:   #006560;
  --color-primary-active:  #004e4a;
  --color-primary-highlight: #d0ecea;
  --shadow-sm: 0 1px 3px oklch(0.2 0.01 240 / 0.08);
  --shadow-md: 0 4px 16px oklch(0.2 0.01 240 / 0.1);
  --shadow-lg: 0 12px 40px oklch(0.2 0.01 240 / 0.14);
}

/* System preference fallback */
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --color-bg:              #f4f2ed;
    --color-surface:         #f8f6f1;
    --color-surface-2:       #faf9f6;
    --color-surface-offset:  #ede9e1;
    --color-surface-offset-2:#e5e0d6;
    --color-surface-dynamic: #d8d3c8;
    --color-divider:         #ccc7bb;
    --color-border:          #bbb5a8;
    --color-text:            #1a1c22;
    --color-text-muted:      #5c6070;
    --color-text-faint:      #9098aa;
    --color-text-inverse:    #f4f2ed;
    --color-primary:         #007c76;
    --color-primary-hover:   #006560;
    --color-primary-active:  #004e4a;
    --color-primary-highlight: #d0ecea;
    --shadow-sm: 0 1px 3px oklch(0.2 0.01 240 / 0.08);
    --shadow-md: 0 4px 16px oklch(0.2 0.01 240 / 0.1);
    --shadow-lg: 0 12px 40px oklch(0.2 0.01 240 / 0.14);
  }
}

/* ==============================================
   GLOBAL LAYOUT
   ============================================== */

.container {
  width: 100%;
  max-width: var(--content-default);
  margin-inline: auto;
  padding-inline: clamp(var(--space-4), 5vw, var(--space-12));
}

.container--wide {
  max-width: var(--content-wide);
}

.container--narrow {
  max-width: var(--content-narrow);
}

/* ==============================================
   HEADER / NAV
   ============================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-divider);
  transition: box-shadow var(--transition-interactive),
              transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.site-header--scrolled {
  box-shadow: 0 2px 20px oklch(0 0 0 / 0.4);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  height: 64px;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
  flex-shrink: 0;
}

.nav__logo:hover { opacity: 0.85; }

.nav__wordmark {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-text);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
}

.nav__links a {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.nav__links a:hover { color: var(--color-text); }

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-interactive);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding: var(--space-2) var(--space-5);
  border: 1px solid var(--color-primary);
}

.btn--primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px color-mix(in oklab, var(--color-primary) 30%, transparent);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text-muted);
  padding: var(--space-2) var(--space-3);
  border: 1px solid transparent;
}

.btn--ghost:hover {
  color: var(--color-text);
  border-color: var(--color-border);
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  cursor: pointer;
}

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

/* Mobile nav toggle */
.nav__mobile-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: var(--color-text-muted);
}

@media (max-width: 768px) {
  .nav__links { display: none; }
  .nav__mobile-toggle { display: flex; }
  .nav__links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-divider);
    padding: var(--space-6);
    gap: var(--space-5);
  }
}

/* ==============================================
   HERO — HOMEPAGE
   ============================================== */

.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--color-bg);
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse 80% 60% at 50% 0%, color-mix(in oklab, var(--color-primary) 8%, transparent) 0%, transparent 70%),
    radial-gradient(ellipse 60% 40% at 80% 100%, color-mix(in oklab, var(--color-secondary) 12%, transparent) 0%, transparent 60%),
    linear-gradient(180deg, var(--color-bg) 0%, var(--color-surface) 100%);
  z-index: 0;
}

.hero__grid-overlay {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(var(--color-divider) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-divider) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.15;
  z-index: 0;
}

.hero__content {
  position: relative;
  z-index: 1;
  padding-block: clamp(var(--space-20), 12vw, var(--space-32));
  width: 100%;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-6);
}

.hero__eyebrow::before {
  content: '';
  display: block;
  width: 24px;
  height: 1px;
  background: var(--color-primary);
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 0.95;
  color: var(--color-text);
  max-width: 14ch;
  margin-bottom: var(--space-8);
}

.hero__title em {
  font-style: normal;
  color: var(--color-primary);
}

.hero__tagline {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 400;
  color: var(--color-text-muted);
  max-width: 52ch;
  line-height: 1.6;
  margin-bottom: var(--space-10);
}

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

.hero__scroll-indicator {
  position: absolute;
  bottom: var(--space-10);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-faint);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  z-index: 1;
  animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* ==============================================
   FEATURED FORCES STRIP
   ============================================== */

.forces-strip {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  padding-block: var(--space-8);
}

.forces-strip__inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-1);
}

.force-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-6);
  border-right: 1px solid var(--color-divider);
}

.force-item:last-child { border-right: none; }

.force-item__icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--color-primary-highlight);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--color-primary);
}

.force-item__label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-1);
}

.force-item__title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.3;
}

@media (max-width: 640px) {
  .forces-strip__inner {
    grid-template-columns: 1fr;
  }
  .force-item {
    border-right: none;
    border-bottom: 1px solid var(--color-divider);
  }
  .force-item:last-child { border-bottom: none; }
}

/* ==============================================
   SECTION HEADERS
   ============================================== */

.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-10);
  padding-bottom: var(--space-5);
  border-bottom: 1px solid var(--color-divider);
}

.section-header__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.section-header__link {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  text-decoration: none;
}

.section-header__link:hover { color: var(--color-primary-hover); }

/* ==============================================
   ARTICLE CARDS
   ============================================== */

.articles-section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
}

/* Featured article — full width hero card */
.article-card--featured {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: var(--space-12);
  text-decoration: none;
  color: inherit;
}

.article-card--featured:hover .article-card__image img {
  transform: scale(1.03);
}

.article-card__image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--color-surface-2);
}

.article-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.article-card--featured .article-card__body {
  padding: var(--space-10) var(--space-10);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.article-card__category {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.article-card__category::before {
  content: '';
  display: block;
  width: 16px;
  height: 1px;
  background: currentColor;
}

.article-card__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.article-card--featured .article-card__title {
  font-size: var(--text-xl);
}

.article-card__excerpt {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: var(--space-6);
  max-width: 55ch;
}

.article-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-weight: 500;
  letter-spacing: 0.04em;
}

.article-card__meta-dot {
  width: 3px;
  height: 3px;
  border-radius: var(--radius-full);
  background: var(--color-text-faint);
}

.article-card__read-more {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-top: var(--space-6);
}

.article-card__read-more svg {
  transition: transform var(--transition-interactive);
}

.article-card--featured:hover .article-card__read-more svg {
  transform: translateX(4px);
}

/* Small article cards grid */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.article-card--small {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
}

.article-card--small:hover {
  border-color: var(--color-border);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.article-card--small .article-card__image {
  aspect-ratio: 16/9;
}

.article-card--small .article-card__body {
  padding: var(--space-5) var(--space-5) var(--space-6);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.article-card--small .article-card__title {
  font-size: var(--text-lg);
  margin-bottom: var(--space-3);
  line-height: 1.25;
}

.article-card--small .article-card__excerpt {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  flex: 1;
}

@media (max-width: 900px) {
  .article-card--featured {
    grid-template-columns: 1fr;
  }
  .article-card--featured .article-card__image {
    aspect-ratio: 16/7;
  }
}

@media (max-width: 768px) {
  .articles-grid {
    grid-template-columns: 1fr;
  }
}

/* ==============================================
   MISSION SECTION
   ============================================== */

.mission-section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
}

.mission-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: clamp(var(--space-12), 6vw, var(--space-20));
  align-items: start;
}

.mission__label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.mission__heading {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.1;
  color: var(--color-text);
}

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

.mission__body p {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.75;
  max-width: 68ch;
}

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

.pillar {
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface-2);
}

.pillar__number {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-primary);
  opacity: 0.4;
  line-height: 1;
  margin-bottom: var(--space-2);
}

.pillar__name {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.pillar__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.5;
}

@media (max-width: 768px) {
  .mission-grid {
    grid-template-columns: 1fr;
  }
  .mission__pillars {
    grid-template-columns: 1fr;
  }
}

/* ==============================================
   SUBSCRIBE SECTION
   ============================================== */

.subscribe-section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
  text-align: center;
  position: relative;
  overflow: hidden;
}

.subscribe-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 80% at 50% 50%, 
    color-mix(in oklab, var(--color-primary) 6%, transparent) 0%, transparent 70%);
  pointer-events: none;
}

.subscribe-section__content {
  position: relative;
  z-index: 1;
  max-width: 600px;
  margin: 0 auto;
}

.subscribe-section__label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.subscribe-section__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.1;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.subscribe-section__body {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: var(--space-8);
}

.subscribe-form {
  display: flex;
  gap: var(--space-3);
  max-width: 440px;
  margin: 0 auto;
}

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

.subscribe-form input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--color-primary) 15%, transparent);
}

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

@media (max-width: 480px) {
  .subscribe-form {
    flex-direction: column;
  }
}

/* ==============================================
   FOOTER
   ============================================== */

.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-12) var(--space-8);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
  padding-bottom: var(--space-10);
  border-bottom: 1px solid var(--color-divider);
}

.footer__brand-name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.footer__tagline {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 36ch;
  margin-bottom: var(--space-6);
}

.footer__social {
  display: flex;
  gap: var(--space-3);
}

.footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  text-decoration: none;
}

.footer__social-link:hover {
  color: var(--color-text);
  border-color: var(--color-primary);
  background: var(--color-primary-highlight);
}

.footer__nav-heading {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-4);
}

.footer__nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__nav-links a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
}

.footer__nav-links a:hover { color: var(--color-text); }

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

.footer__copy {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.footer__pplx {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-decoration: none;
}

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

@media (max-width: 768px) {
  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}

/* ==============================================
   ARTICLE PAGE
   ============================================== */

.article-hero {
  padding-block: clamp(var(--space-12), 6vw, var(--space-20)) var(--space-12);
  border-bottom: 1px solid var(--color-divider);
  background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-bg) 100%);
}

.article-hero__category {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-5);
  text-decoration: none;
}

.article-hero__category::before {
  content: '';
  display: block;
  width: 20px;
  height: 1px;
  background: currentColor;
}

.article-hero__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 1.2rem + 3vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.1;
  color: var(--color-text);
  max-width: 18ch;
  margin-bottom: var(--space-6);
}

.article-hero__meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-8);
}

.article-hero__byline {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
}

.article-hero__date {
  font-size: var(--text-sm);
  color: var(--color-text-faint);
}

.article-hero__read-time {
  font-size: var(--text-sm);
  color: var(--color-text-faint);
}

.article-hero__separator {
  width: 3px;
  height: 3px;
  border-radius: var(--radius-full);
  background: var(--color-text-faint);
}

.article-hero__image {
  width: 100%;
  max-height: 520px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  display: block;
}

.article-hero__image-caption {
  margin-top: var(--space-3);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-align: center;
}

/* Article body layout: prose + sticky sidebar */
.article-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: var(--space-12);
  align-items: start;
  padding-block: clamp(var(--space-10), 5vw, var(--space-16));
}

/* Prose */
.article-prose {
  font-family: var(--font-body);
  font-size: clamp(1.0625rem, 0.95rem + 0.3vw, 1.1875rem);
  line-height: 1.78;
  color: var(--color-text);
  max-width: 68ch;
}

.article-prose p {
  margin-bottom: var(--space-6);
  max-width: 68ch;
}

.article-prose h2 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-top: var(--space-12);
  margin-bottom: var(--space-5);
  line-height: 1.15;
}

.article-prose h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-top: var(--space-8);
  margin-bottom: var(--space-4);
}

.article-prose strong {
  font-weight: 700;
  color: var(--color-text);
}

.article-prose em {
  font-style: italic;
  color: var(--color-text-muted);
}

.article-prose blockquote {
  border-left: 3px solid var(--color-primary);
  padding-left: var(--space-6);
  margin: var(--space-8) 0;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-style: italic;
  color: var(--color-text-muted);
  line-height: 1.5;
  max-width: 60ch;
}

.article-prose .pull-quote {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: var(--space-6) var(--space-8);
  margin: var(--space-10) 0;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-style: italic;
  color: var(--color-text);
  line-height: 1.5;
}

.article-prose .section-break {
  text-align: center;
  color: var(--color-text-faint);
  margin: var(--space-10) 0;
  font-size: var(--text-xl);
  letter-spacing: 0.2em;
}

/* Probability bars */
.probability-block {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6) var(--space-8);
  margin: var(--space-10) 0;
}

.probability-block__title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-6);
  font-size: var(--text-xs);
}

.probability-item {
  margin-bottom: var(--space-5);
}

.probability-item:last-child { margin-bottom: 0; }

.probability-item__label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: var(--space-2);
}

.probability-item__name {
  font-size: var(--text-sm);
  color: var(--color-text);
  font-weight: 500;
}

.probability-item__pct {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-primary);
}

.probability-bar {
  height: 4px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.probability-bar__fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  transition: width 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Sidebar */
.article-sidebar {
  position: sticky;
  top: calc(64px + var(--space-6));
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.sidebar-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-5);
}

.sidebar-card__title {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-divider);
}

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

.sidebar-toc a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  display: block;
  transition: all var(--transition-interactive);
  border-left: 2px solid transparent;
}

.sidebar-toc a:hover,
.sidebar-toc a.active {
  color: var(--color-text);
  background: var(--color-surface-2);
  border-left-color: var(--color-primary);
}

.sidebar-subscribe__text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.55;
  margin-bottom: var(--space-4);
}

.sidebar-subscribe__btn {
  width: 100%;
  justify-content: center;
  padding: var(--space-3) var(--space-4);
}

@media (max-width: 900px) {
  .article-layout {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    position: static;
    order: -1;
  }
}

/* ==============================================
   BACK TO TOP / PROGRESS BAR
   ============================================== */

.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  background: var(--color-primary);
  z-index: 100;
  width: 0%;
  transition: width 0.1s linear;
}

/* ==============================================
   PAGE: ABOUT
   ============================================== */

.about-hero {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
  border-bottom: 1px solid var(--color-divider);
}

.about-hero__label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-5);
}

.about-hero__title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--color-text);
  max-width: 16ch;
  margin-bottom: var(--space-6);
}

.about-body {
  padding-block: clamp(var(--space-12), 6vw, var(--space-20));
}

.about-body p {
  font-family: var(--font-body);
  font-size: clamp(1.0625rem, 0.95rem + 0.3vw, 1.1875rem);
  line-height: 1.78;
  color: var(--color-text-muted);
  max-width: 68ch;
  margin-bottom: var(--space-5);
}

.about-body h2 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-top: var(--space-12);
  margin-bottom: var(--space-5);
}

.phase-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
  margin: var(--space-10) 0;
}

.phase-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.phase-card__phase {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.phase-card__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.phase-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

@media (max-width: 768px) {
  .phase-grid { grid-template-columns: 1fr; }
}

/* ==============================================
   UTILITY
   ============================================== */

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

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

/* Reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

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