/* ============================================================
   LENTAVIX — Editorial Learning Grid
   style.css | Version 1.0
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,600;0,700;1,400;1,600&family=Inter:wght@300;400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

/* ============================================================
   CSS CUSTOM PROPERTIES
   ============================================================ */
:root {
  /* Color palette */
  --color-ink:        #0f0f0f;
  --color-ink-mid:    #2a2a2a;
  --color-ink-soft:   #555555;
  --color-paper:      #f7f5f0;
  --color-paper-warm: #ede9e1;
  --color-rule:       #d4cfc5;
  --color-accent:     #c0392b;
  --color-accent-mid: #a93226;
  --color-white:      #ffffff;

  /* Typography */
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans:  'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:  'IBM Plex Mono', 'Courier New', monospace;

  /* Spacing scale */
  --space-xs:  4px;
  --space-sm:  8px;
  --space-md:  16px;
  --space-lg:  24px;
  --space-xl:  40px;
  --space-2xl: 64px;
  --space-3xl: 96px;
  --space-4xl: 128px;

  /* Layout */
  --container: 1280px;
  --gutter:    24px;

  /* Transitions */
  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --dur: 0.22s;
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
  list-style: none;
}

button, input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* ============================================================
   TYPOGRAPHY SCALE
   ============================================================ */
.t-display {
  font-family: var(--font-serif);
  font-size: clamp(48px, 7vw, 96px);
  font-weight: 700;
  line-height: 1.0;
  letter-spacing: -0.02em;
}

.t-headline {
  font-family: var(--font-serif);
  font-size: clamp(32px, 4vw, 56px);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.015em;
}

.t-title {
  font-family: var(--font-serif);
  font-size: clamp(22px, 2.5vw, 32px);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.t-subtitle {
  font-family: var(--font-serif);
  font-size: clamp(18px, 2vw, 24px);
  font-weight: 400;
  font-style: italic;
  line-height: 1.35;
  color: var(--color-ink-soft);
}

.t-body-lg {
  font-family: var(--font-sans);
  font-size: 18px;
  font-weight: 400;
  line-height: 1.7;
}

.t-body {
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 400;
  line-height: 1.65;
  color: var(--color-ink-mid);
}

.t-caption {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
}

.t-label {
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
}

/* ============================================================
   LAYOUT UTILITIES
   ============================================================ */
.container {
  max-width: var(--container);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.section {
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-3xl);
}

.section--sm {
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-2xl);
}

.section--lg {
  padding-top: var(--space-4xl);
  padding-bottom: var(--space-4xl);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--gutter);
}

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

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gutter);
}

.grid-asym {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--gutter);
}

.grid-asym--rev {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--gutter);
}

.flex-row {
  display: flex;
  flex-direction: row;
}

.flex-col {
  display: flex;
  flex-direction: column;
}

.items-center { align-items: center; }
.items-start  { align-items: flex-start; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

.rule {
  border: none;
  border-top: 1px solid var(--color-rule);
}

.rule--dark {
  border-top-color: var(--color-ink);
}

/* ============================================================
   HEADER / NAVIGATION
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-paper);
  border-bottom: 1px solid var(--color-rule);
}

.header-inner {
  display: flex;
  align-items: stretch;
  height: 64px;
}

.header-logo {
  display: flex;
  align-items: center;
  padding-right: var(--space-xl);
  border-right: 1px solid var(--color-rule);
  flex-shrink: 0;
}

.header-logo a {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-ink);
}

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

.header-nav {
  display: flex;
  align-items: center;
  flex: 1;
  padding-left: var(--space-xl);
}

.header-nav ul {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.header-nav a {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-ink-mid);
  position: relative;
  transition: color var(--dur) var(--ease);
}

.header-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 100%;
  height: 1px;
  background-color: var(--color-accent);
  transition: right var(--dur) var(--ease);
}

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

.header-nav a:hover::after {
  right: 0;
}

.header-nav a.active {
  color: var(--color-ink);
}

.header-nav a.active::after {
  right: 0;
}

.header-actions {
  display: flex;
  align-items: center;
  padding-left: var(--space-lg);
  border-left: 1px solid var(--color-rule);
  gap: var(--space-md);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: var(--space-sm);
}

.hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--color-ink);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.mobile-menu {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-paper);
  z-index: 99;
  padding: var(--space-2xl) var(--gutter);
  overflow-y: auto;
}

.mobile-menu.open {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.mobile-menu a {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 600;
  color: var(--color-ink);
  border-bottom: 1px solid var(--color-rule);
  padding-bottom: var(--space-md);
  display: block;
  transition: color var(--dur) var(--ease);
}

.mobile-menu a:hover {
  color: var(--color-accent);
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 12px 24px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: background-color var(--dur) var(--ease),
              color var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              transform var(--dur) var(--ease);
  text-decoration: none;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn--primary {
  background-color: var(--color-ink);
  color: var(--color-white);
  border-color: var(--color-ink);
}

.btn--primary:hover {
  background-color: var(--color-ink-mid);
  border-color: var(--color-ink-mid);
  color: var(--color-white);
}

.btn--accent {
  background-color: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}

.btn--accent:hover {
  background-color: var(--color-accent-mid);
  border-color: var(--color-accent-mid);
  color: var(--color-white);
}

.btn--outline {
  background-color: transparent;
  color: var(--color-ink);
  border-color: var(--color-ink);
}

.btn--outline:hover {
  background-color: var(--color-ink);
  color: var(--color-white);
}

.btn--ghost {
  background-color: transparent;
  color: var(--color-ink-soft);
  border-color: var(--color-rule);
}

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

.btn--sm {
  padding: 8px 16px;
  font-size: 11px;
}

.btn--lg {
  padding: 16px 36px;
  font-size: 14px;
}

/* ============================================================
   HERO — EDITORIAL COLUMNS
   ============================================================ */
.hero {
  border-bottom: 1px solid var(--color-rule);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  min-height: 80vh;
  align-items: stretch;
}

.hero-col {
  border-right: 1px solid var(--color-rule);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-2xl) var(--space-xl);
}

.hero-col:last-child {
  border-right: none;
}

.hero-col--main {
  grid-column: span 2;
  background-color: var(--color-ink);
  color: var(--color-white);
  position: relative;
  overflow: hidden;
  justify-content: flex-start;
  padding-top: var(--space-4xl);
}

.hero-col--main .hero-bg {
  position: absolute;
  inset: 0;
  object-fit: cover;
  width: 100%;
  height: 100%;
  opacity: 0.25;
  filter: grayscale(60%);
  mix-blend-mode: luminosity;
}

.hero-col--main .hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
  padding: var(--space-3xl) var(--space-2xl);
}

.hero-col--main .t-display {
  color: var(--color-white);
  margin-bottom: var(--space-lg);
}

.hero-col--main .t-body-lg {
  color: rgba(255,255,255,0.75);
  margin-bottom: var(--space-2xl);
  max-width: 480px;
}

.hero-col--main .hero-meta {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  border-top: 1px solid rgba(255,255,255,0.15);
  padding-top: var(--space-lg);
}

.hero-col--main .hero-meta-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.hero-col--main .hero-meta-item .num {
  font-family: var(--font-serif);
  font-size: 36px;
  font-weight: 700;
  color: var(--color-white);
  line-height: 1;
}

.hero-col--main .hero-meta-item .lbl {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
}

.hero-sidebar {
  background-color: var(--color-paper-warm);
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding: var(--space-2xl) var(--space-xl);
  gap: var(--space-2xl);
}

.hero-sidebar-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.hero-sidebar-section .t-caption {
  border-bottom: 1px solid var(--color-rule);
  padding-bottom: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.hero-news-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-rule);
}

.hero-news-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.hero-news-item .news-title {
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-ink);
  transition: color var(--dur) var(--ease);
}

.hero-news-item:hover .news-title {
  color: var(--color-accent);
}

.hero-news-item .news-meta {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-ink-soft);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ============================================================
   TICKER / BREAKING LINE
   ============================================================ */
.ticker-bar {
  background-color: var(--color-ink);
  color: var(--color-white);
  overflow: hidden;
  white-space: nowrap;
  padding: var(--space-sm) 0;
}

.ticker-inner {
  display: inline-flex;
  gap: 0;
  animation: ticker 40s linear infinite;
}

.ticker-inner span {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0 var(--space-xl);
}

.ticker-inner .sep {
  color: var(--color-accent);
  padding: 0;
}

@keyframes ticker {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ============================================================
   SECTION HEADER / EDITORIAL LABEL
   ============================================================ */
.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  border-bottom: 1px solid var(--color-ink);
  padding-bottom: var(--space-md);
  margin-bottom: var(--space-2xl);
}

.section-header h2 {
  font-family: var(--font-serif);
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.section-header .section-link {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
  transition: color var(--dur) var(--ease);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  white-space: nowrap;
}

.section-header .section-link:hover {
  color: var(--color-accent);
}

.section-header .section-link::after {
  content: '→';
  font-style: normal;
}

/* ============================================================
   COURSE CARDS — EDITORIAL GRID
   ============================================================ */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--color-rule);
  border-left: 1px solid var(--color-rule);
}

.course-card {
  border-right: 1px solid var(--color-rule);
  border-bottom: 1px solid var(--color-rule);
  display: flex;
  flex-direction: column;
  background-color: var(--color-white);
  transition: background-color var(--dur) var(--ease);
}

.course-card:hover {
  background-color: var(--color-paper-warm);
}

.course-card__image {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  display: block;
  filter: grayscale(20%);
  transition: filter var(--dur) var(--ease), transform 0.4s var(--ease);
}

.course-card:hover .course-card__image {
  filter: grayscale(0%);
}

.course-card__body {
  padding: var(--space-xl) var(--space-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.course-card__category {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.course-card__title {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  line-height: 1.25;
  color: var(--color-ink);
}

.course-card:hover .course-card__title {
  color: var(--color-accent);
}

.course-card__desc {
  font-size: 13px;
  color: var(--color-ink-soft);
  line-height: 1.6;
  flex: 1;
}

.course-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  border-top: 1px solid var(--color-rule);
  background-color: var(--color-paper);
}

.course-card__meta {
  display: flex;
  gap: var(--space-lg);
}

.course-card__meta-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.course-card__meta-item .meta-val {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-ink);
}

.course-card__meta-item .meta-key {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
}

.course-card__arrow {
  width: 32px;
  height: 32px;
  border: 1.5px solid var(--color-rule);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--color-ink-soft);
  transition: all var(--dur) var(--ease);
}

.course-card:hover .course-card__arrow {
  background-color: var(--color-ink);
  border-color: var(--color-ink);
  color: var(--color-white);
}

/* Featured large course card */
.course-card--featured {
  grid-column: span 2;
  flex-direction: row;
}

.course-card--featured .course-card__image {
  width: 55%;
  aspect-ratio: auto;
  min-height: 320px;
  object-fit: cover;
  flex-shrink: 0;
}

.course-card--featured .course-card__body {
  padding: var(--space-2xl) var(--space-xl);
}

.course-card--featured .course-card__title {
  font-size: 26px;
}

/* ============================================================
   ARTICLE / BLOG CARDS
   ============================================================ */
.articles-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.article-row {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  gap: var(--space-xl);
  align-items: start;
  padding: var(--space-xl) 0;
  border-bottom: 1px solid var(--color-rule);
  transition: background-color var(--dur) var(--ease);
}

.article-row:hover {
  background-color: var(--color-paper-warm);
  padding-left: var(--space-md);
  padding-right: var(--space-md);
  margin-left: calc(-1 * var(--space-md));
  margin-right: calc(-1 * var(--space-md));
  border-radius: 2px;
}

.article-row__num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-ink-soft);
  letter-spacing: 0.05em;
  padding-top: 4px;
}

.article-row__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.article-row__category {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.article-row__title {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  line-height: 1.25;
  color: var(--color-ink);
  transition: color var(--dur) var(--ease);
}

.article-row:hover .article-row__title {
  color: var(--color-accent);
}

.article-row__excerpt {
  font-size: 13px;
  color: var(--color-ink-soft);
  line-height: 1.6;
  max-width: 560px;
}

.article-row__date {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-ink-soft);
  letter-spacing: 0.05em;
  white-space: nowrap;
  padding-top: 4px;
}

/* Grid article cards */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--color-rule);
  border-left: 1px solid var(--color-rule);
}

.article-card {
  border-right: 1px solid var(--color-rule);
  border-bottom: 1px solid var(--color-rule);
  padding: var(--space-xl) var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  background-color: var(--color-white);
  transition: background-color var(--dur) var(--ease);
  cursor: pointer;
}

.article-card:hover {
  background-color: var(--color-paper-warm);
}

.article-card__image {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
  display: block;
  margin-bottom: var(--space-sm);
  filter: grayscale(15%);
  transition: filter 0.4s var(--ease);
}

.article-card:hover .article-card__image {
  filter: grayscale(0%);
}

.article-card__category {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.article-card__title {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-ink);
  transition: color var(--dur) var(--ease);
}

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

.article-card__excerpt {
  font-size: 13px;
  color: var(--color-ink-soft);
  line-height: 1.6;
  flex: 1;
}

.article-card__meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--color-rule);
  padding-top: var(--space-md);
}

.article-card__meta .date {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-ink-soft);
  letter-spacing: 0.05em;
}

.article-card__meta .read-time {
  font-size: 11px;
  color: var(--color-ink-soft);
}

/* ============================================================
   INSTRUCTOR CARD
   ============================================================ */
.instructor-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  padding: var(--space-xl);
  background-color: var(--color-white);
  border: 1px solid var(--color-rule);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.instructor-card:hover {
  border-color: var(--color-ink);
  transform: translateY(-2px);
}

.instructor-card__photo {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  object-position: top center;
  filter: grayscale(30%);
  transition: filter 0.4s var(--ease);
}

.instructor-card:hover .instructor-card__photo {
  filter: grayscale(0%);
}

.instructor-card__name {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-ink);
}

.instructor-card__role {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.instructor-card__bio {
  font-size: 13px;
  color: var(--color-ink-soft);
  line-height: 1.65;
}

/* ============================================================
   TESTIMONIAL / QUOTE BLOCK
   ============================================================ */
.quote-block {
  position: relative;
  padding: var(--space-2xl);
  border-left: 3px solid var(--color-accent);
  background-color: var(--color-paper-warm);
}

.quote-block__mark {
  font-family: var(--font-serif);
  font-size: 80px;
  line-height: 0.7;
  color: var(--color-accent);
  opacity: 0.2;
  position: absolute;
  top: var(--space-lg);
  left: var(--space-xl);
  user-select: none;
}

.quote-block__text {
  font-family: var(--font-serif);
  font-size: 22px;
  font-style: italic;
  line-height: 1.5;
  color: var(--color-ink);
  position: relative;
  z-index: 1;
  margin-bottom: var(--space-lg);
}

.quote-block__author {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.quote-block__author .name {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-ink);
}

.quote-block__author .position {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
}

/* Testimonial card grid */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--gutter);
}

.testimonial-card {
  padding: var(--space-2xl);
  background-color: var(--color-white);
  border: 1px solid var(--color-rule);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  transition: border-color var(--dur) var(--ease);
}

.testimonial-card:hover {
  border-color: var(--color-ink-mid);
}

.testimonial-card__stars {
  color: var(--color-accent);
  font-size: 14px;
  letter-spacing: 2px;
}

.testimonial-card__text {
  font-family: var(--font-serif);
  font-size: 16px;
  font-style: italic;
  line-height: 1.6;
  color: var(--color-ink-mid);
  flex: 1;
}

.testimonial-card__author {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  border-top: 1px solid var(--color-rule);
  padding-top: var(--space-md);
}

.testimonial-card__author img {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  object-position: top;
  filter: grayscale(30%);
}

.testimonial-card__author .info .name {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-ink);
}

.testimonial-card__author .info .role {
  font-size: 12px;
  color: var(--color-ink-soft);
}

/* ============================================================
   STATS ROW
   ============================================================ */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--color-rule);
  border-left: 1px solid var(--color-rule);
}

.stat-item {
  border-right: 1px solid var(--color-rule);
  border-bottom: 1px solid var(--color-rule);
  padding: var(--space-2xl) var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.stat-item__number {
  font-family: var(--font-serif);
  font-size: 52px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-ink);
}

.stat-item__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
}

.stat-item__desc {
  font-size: 13px;
  color: var(--color-ink-soft);
  line-height: 1.55;
  margin-top: var(--space-sm);
}

/* ============================================================
   FEATURES / METHODOLOGY
   ============================================================ */
.features-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.feature-item {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: var(--space-xl);
  padding: var(--space-xl) 0;
  border-bottom: 1px solid var(--color-rule);
  align-items: start;
}

.feature-item__number {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 400;
  color: var(--color-rule);
  line-height: 1.2;
}

.feature-item__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.feature-item__title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
  color: var(--color-ink);
  line-height: 1.25;
}

.feature-item__text {
  font-size: 14px;
  color: var(--color-ink-soft);
  line-height: 1.65;
}

/* ============================================================
   SPLIT SECTION (IMAGE + TEXT)
   ============================================================ */
.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 520px;
  border-top: 1px solid var(--color-rule);
  border-bottom: 1px solid var(--color-rule);
}

.split-section__media {
  overflow: hidden;
  position: relative;
}

.split-section__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: grayscale(20%);
  transition: filter 0.6s var(--ease);
}

.split-section:hover .split-section__media img {
  filter: grayscale(0%);
}

.split-section__content {
  padding: var(--space-3xl) var(--space-2xl);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--space-xl);
  border-left: 1px solid var(--color-rule);
}

.split-section--rev .split-section__content {
  border-left: none;
  border-right: 1px solid var(--color-rule);
  order: -1;
}

/* ============================================================
   FAQ
   ============================================================ */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.faq-item {
  border-bottom: 1px solid var(--color-rule);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-lg) 0;
  cursor: pointer;
  gap: var(--space-xl);
}

.faq-question h3 {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--color-ink);
  line-height: 1.3;
  transition: color var(--dur) var(--ease);
}

.faq-question:hover h3 {
  color: var(--color-accent);
}

.faq-toggle {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border: 1.5px solid var(--color-rule);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--color-ink-soft);
  transition: all var(--dur) var(--ease);
  user-select: none;
}

.faq-item.open .faq-toggle {
  background-color: var(--color-ink);
  border-color: var(--color-ink);
  color: var(--color-white);
  transform: rotate(45deg);
}

.faq-answer {
  display: none;
  padding: 0 0 var(--space-lg) 0;
  max-width: 680px;
}

.faq-answer p {
  font-size: 14px;
  color: var(--color-ink-soft);
  line-height: 1.7;
}

.faq-item.open .faq-answer {
  display: block;
}

/* ============================================================
   CONTACT FORM
   ============================================================ */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-4xl);
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xl);
}

.contact-info-block {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.contact-info-block .label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
  margin-bottom: var(--space-xs);
}

.contact-info-block .value {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--color-ink);
  line-height: 1.3;
}

.contact-info-block .value a {
  color: inherit;
  transition: color var(--dur) var(--ease);
}

.contact-info-block .value a:hover {
  color: var(--color-accent);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

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

.form-group label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  background-color: var(--color-white);
  border: 1.5px solid var(--color-rule);
  border-radius: 0;
  color: var(--color-ink);
  font-size: 14px;
  transition: border-color var(--dur) var(--ease);
  appearance: none;
  -webkit-appearance: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-ink);
}

.form-group textarea {
  resize: vertical;
  min-height: 140px;
  line-height: 1.6;
}

.form-group select {
  cursor: pointer;
}

.form-success {
  display: none;
  padding: var(--space-2xl);
  background-color: var(--color-paper-warm);
  border: 1.5px solid var(--color-ink);
  text-align: center;
  flex-direction: column;
  gap: var(--space-md);
  align-items: center;
}

.form-success.visible {
  display: flex;
}

.form-success__icon {
  width: 48px;
  height: 48px;
  border: 2px solid var(--color-ink);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.form-success__title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
  color: var(--color-ink);
}

.form-success__text {
  font-size: 14px;
  color: var(--color-ink-soft);
  max-width: 400px;
  line-height: 1.6;
}

/* ============================================================
   PAGE HEADER (inner pages)
   ============================================================ */
.page-header {
  padding: var(--space-3xl) 0 var(--space-2xl);
  border-bottom: 1px solid var(--color-ink);
}

.page-header__eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
  margin-bottom: var(--space-md);
}

.page-header__title {
  font-family: var(--font-serif);
  font-size: clamp(38px, 5vw, 68px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--color-ink);
  max-width: 800px;
}

.page-header__desc {
  margin-top: var(--space-lg);
  font-size: 17px;
  color: var(--color-ink-soft);
  line-height: 1.7;
  max-width: 620px;
}

/* ============================================================
   BREADCRUMB
   ============================================================ */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-rule);
}

.breadcrumb a,
.breadcrumb span {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--color-ink-soft);
}

.breadcrumb a {
  transition: color var(--dur) var(--ease);
}

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

.breadcrumb .sep {
  color: var(--color-rule);
}

.breadcrumb .current {
  color: var(--color-ink);
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background-color: var(--color-ink);
  color: var(--color-white);
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-3xl);
  padding-bottom: var(--space-3xl);
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.footer-logo {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-white);
}

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

.footer-tagline {
  font-size: 14px;
  color: rgba(255,255,255,0.55);
  line-height: 1.65;
  max-width: 280px;
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-contact a,
.footer-contact span {
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  transition: color var(--dur) var(--ease);
}

.footer-contact a:hover {
  color: var(--color-white);
}

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.35);
  margin-bottom: var(--space-lg);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.footer-col ul li a {
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  transition: color var(--dur) var(--ease);
}

.footer-col ul li a:hover {
  color: var(--color-white);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-xl);
  gap: var(--space-md);
  flex-wrap: wrap;
}

.footer-bottom__left {
  font-family: var(--font-mono);
  font-size: 11px;
  color: rgba(255,255,255,0.3);
  letter-spacing: 0.05em;
}

.footer-bottom__links {
  display: flex;
  gap: var(--space-xl);
}

.footer-bottom__links a {
  font-family: var(--font-mono);
  font-size: 11px;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.05em;
  transition: color var(--dur) var(--ease);
}

.footer-bottom__links a:hover {
  color: var(--color-white);
}

/* ============================================================
   POLICY PAGES
   ============================================================ */
.policy-content {
  max-width: 760px;
  margin: 0 auto;
  padding: var(--space-3xl) 0 var(--space-4xl);
}

.policy-content h2 {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  color: var(--color-ink);
  margin-top: var(--space-3xl);
  margin-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-rule);
  padding-bottom: var(--space-sm);
}

.policy-content h3 {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--color-ink);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
}

.policy-content p {
  font-size: 15px;
  color: var(--color-ink-mid);
  line-height: 1.75;
  margin-bottom: var(--space-md);
}

.policy-content ul,
.policy-content ol {
  padding-left: var(--space-xl);
  margin-bottom: var(--space-md);
}

.policy-content ul { list-style: disc; }
.policy-content ol { list-style: decimal; }

.policy-content li {
  font-size: 15px;
  color: var(--color-ink-mid);
  line-height: 1.7;
  margin-bottom: var(--space-sm);
}

.policy-content a {
  color: var(--color-accent);
  text-decoration: underline;
}

.policy-content a:hover {
  color: var(--color-accent-mid);
}

.policy-meta {
  background-color: var(--color-paper-warm);
  border: 1px solid var(--color-rule);
  padding: var(--space-lg) var(--space-xl);
  margin-bottom: var(--space-2xl);
  display: flex;
  gap: var(--space-2xl);
  flex-wrap: wrap;
}

.policy-meta-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.policy-meta-item .meta-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
}

.policy-meta-item .meta-value {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-ink);
}

/* ============================================================
   ABOUT PAGE — MISSION BLOCK
   ============================================================ */
.mission-block {
  background-color: var(--color-ink);
  color: var(--color-white);
  padding: var(--space-4xl) 0;
}

.mission-block .t-headline {
  color: var(--color-white);
  max-width: 700px;
}

.mission-grid {
  display: grid;
  grid-template-columns: 1fr 2px 1fr;
  gap: var(--space-2xl);
  margin-top: var(--space-3xl);
}

.mission-divider {
  background-color: rgba(255,255,255,0.1);
  align-self: stretch;
}

.mission-col h3 {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: var(--space-md);
}

.mission-col p {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  line-height: 1.7;
}

/* ============================================================
   COURSE SINGLE PAGE
   ============================================================ */
.course-hero {
  background-color: var(--color-ink);
  color: var(--color-white);
  padding: var(--space-3xl) 0;
  position: relative;
  overflow: hidden;
}

.course-hero__bg {
  position: absolute;
  inset: 0;
  object-fit: cover;
  width: 100%;
  height: 100%;
  opacity: 0.15;
  filter: grayscale(50%);
}

.course-hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: var(--space-3xl);
  align-items: start;
}

.course-hero__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.course-hero__category {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.course-hero__title {
  font-family: var(--font-serif);
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--color-white);
}

.course-hero__desc {
  font-size: 16px;
  color: rgba(255,255,255,0.7);
  line-height: 1.7;
  max-width: 560px;
}

.course-hero__instructor {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255,255,255,0.15);
}

.course-hero__instructor img {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  filter: grayscale(20%);
}

.course-hero__instructor .name {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-white);
}

.course-hero__instructor .role {
  font-size: 12px;
  color: rgba(255,255,255,0.5);
}

.course-card-sidebar {
  background-color: var(--color-white);
  border: 1.5px solid var(--color-rule);
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  color: var(--color-ink);
  position: sticky;
  top: 80px;
}

.course-card-sidebar__title {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-ink);
}

.course-sidebar-features {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  border-top: 1px solid var(--color-rule);
  border-bottom: 1px solid var(--color-rule);
  padding: var(--space-lg) 0;
}

.course-sidebar-feature {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.course-sidebar-feature .feat-key {
  font-size: 13px;
  color: var(--color-ink-soft);
}

.course-sidebar-feature .feat-val {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-ink);
}

.course-curriculum {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.curriculum-module {
  border-bottom: 1px solid var(--color-rule);
}

.curriculum-module-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-lg) 0;
  cursor: pointer;
  gap: var(--space-md);
}

.curriculum-module-header h3 {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 600;
  color: var(--color-ink);
  display: flex;
  gap: var(--space-md);
  align-items: center;
}

.curriculum-module-header h3 .mod-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-ink-soft);
  font-style: normal;
  min-width: 28px;
}

.curriculum-module-meta {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-ink-soft);
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.curriculum-lessons {
  display: none;
  padding: 0 0 var(--space-lg) 0;
  flex-direction: column;
  gap: var(--space-sm);
}

.curriculum-module.open .curriculum-lessons {
  display: flex;
}

.curriculum-lesson {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) var(--space-md);
  background-color: var(--color-paper-warm);
}

.curriculum-lesson .lesson-name {
  font-size: 13px;
  color: var(--color-ink-mid);
  display: flex;
  gap: var(--space-md);
  align-items: center;
}

.curriculum-lesson .lesson-name::before {
  content: '○';
  color: var(--color-rule);
  font-size: 10px;
}

.curriculum-lesson .lesson-dur {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-ink-soft);
}

/* ============================================================
   BLOG / ARTICLES PAGE
   ============================================================ */
.blog-hero-row {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 0;
  border-bottom: 1px solid var(--color-rule);
}

.blog-hero-main {
  border-right: 1px solid var(--color-rule);
  display: flex;
  flex-direction: column;
}

.blog-hero-main img {
  width: 100%;
  aspect-ratio: 16/8;
  object-fit: cover;
  filter: grayscale(15%);
  transition: filter 0.5s var(--ease);
}

.blog-hero-main:hover img {
  filter: grayscale(0%);
}

.blog-hero-main__body {
  padding: var(--space-2xl);
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.blog-hero-side {
  display: flex;
  flex-direction: column;
}

.blog-hero-side-item {
  padding: var(--space-xl);
  border-bottom: 1px solid var(--color-rule);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  flex: 1;
  transition: background-color var(--dur) var(--ease);
  cursor: pointer;
}

.blog-hero-side-item:hover {
  background-color: var(--color-paper-warm);
}

.blog-hero-side-item:last-child {
  border-bottom: none;
}

/* ============================================================
   TAGS / CATEGORIES FILTER
   ============================================================ */
.filter-bar {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--color-rule);
  margin-bottom: var(--space-2xl);
}

.filter-tag {
  padding: 6px 14px;
  border: 1.5px solid var(--color-rule);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
  cursor: pointer;
  transition: all var(--dur) var(--ease);
  background: none;
}

.filter-tag:hover,
.filter-tag.active {
  background-color: var(--color-ink);
  border-color: var(--color-ink);
  color: var(--color-white);
}

/* ============================================================
   SCROLLBAR
   ============================================================ */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--color-paper); }
::-webkit-scrollbar-thumb { background: var(--color-rule); }
::-webkit-scrollbar-thumb:hover { background: var(--color-ink-soft); }

/* ============================================================
   UTILITY
   ============================================================ */
.text-accent  { color: var(--color-accent); }
.text-muted   { color: var(--color-ink-soft); }
.text-center  { text-align: center; }
.mt-sm  { margin-top: var(--space-sm); }
.mt-md  { margin-top: var(--space-md); }
.mt-lg  { margin-top: var(--space-lg); }
.mt-xl  { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }
.mb-sm  { margin-bottom: var(--space-sm); }
.mb-md  { margin-bottom: var(--space-md); }
.mb-lg  { margin-bottom: var(--space-lg); }
.mb-xl  { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

/* ============================================================
   RESPONSIVE — TABLET (≤ 1024px)
   ============================================================ */
@media (max-width: 1024px) {
  :root { --gutter: 20px; }

  .hero-grid { grid-template-columns: 1fr; min-height: auto; }
  .hero-col--main { grid-column: span 1; }
  .hero-sidebar { display: none; }

  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .courses-grid { grid-template-columns: repeat(2, 1fr); }
  .course-card--featured { grid-column: span 2; flex-direction: column; }
  .course-card--featured .course-card__image { width: 100%; min-height: 240px; }

  .articles-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-2xl); }
  .contact-layout { grid-template-columns: 1fr; gap: var(--space-2xl); }
  .split-section { grid-template-columns: 1fr; min-height: auto; }
  .split-section__media { aspect-ratio: 16/7; }
  .split-section--rev .split-section__content { order: 0; }
  .split-section__content { border-left: none; border-top: 1px solid var(--color-rule); padding: var(--space-2xl) var(--gutter); }
  .course-hero__inner { grid-template-columns: 1fr; }
  .mission-grid { grid-template-columns: 1fr; }
  .mission-divider { display: none; }

  .header-nav { display: none; }
  .hamburger { display: flex; }
  .header-actions .btn { display: none; }
}

/* ============================================================
   POLICY PAGES LAYOUT
   ============================================================ */
.policy-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 64px;
  align-items: start;
}

.policy-toc {
  position: sticky;
  top: 100px;
  background-color: var(--color-paper-warm);
  border: 1px solid var(--color-rule);
  padding: 28px 24px;
}

.toc-link {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--color-ink-soft);
  text-decoration: none;
  letter-spacing: 0;
  text-transform: none;
  transition: color 0.2s;
  line-height: 1.5;
}
.toc-link:hover {
  color: var(--color-accent);
}

.policy-body {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.policy-section {
  padding: 40px 0;
  border-bottom: 1px solid var(--color-rule);
}
.policy-section:first-child {
  padding-top: 0;
}
.policy-section:last-child {
  border-bottom: none;
}

.policy-section h2 {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 400;
  color: var(--color-ink);
  margin: 0 0 20px 0;
  line-height: 1.3;
}

.policy-section h3 {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-ink);
  margin: 28px 0 12px 0;
}

.policy-section p {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-ink-soft);
  margin: 0 0 16px 0;
}
.policy-section p:last-child {
  margin-bottom: 0;
}

.policy-section ul {
  padding-left: 20px;
  margin: 0 0 16px 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.policy-section ul li {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.65;
  color: var(--color-ink-soft);
}
.policy-section ul li strong {
  color: var(--color-ink);
  font-weight: 600;
}
.policy-section a {
  color: var(--color-accent);
  text-decoration: underline;
}
.policy-section a:hover {
  color: var(--color-ink);
}

/* Cookie table */
.cookie-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-family: var(--font-sans);
  font-size: 13px;
}
.cookie-table thead tr {
  border-bottom: 2px solid var(--color-ink);
}
.cookie-table th {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
  padding: 10px 12px;
}
.cookie-table td {
  padding: 12px 12px;
  border-bottom: 1px solid var(--color-rule);
  vertical-align: top;
  color: var(--color-ink-soft);
  line-height: 1.5;
}
.cookie-table td code {
  font-family: var(--font-mono);
  font-size: 12px;
  background-color: var(--color-paper-warm);
  padding: 2px 6px;
  color: var(--color-ink);
  white-space: nowrap;
}
.cookie-table tbody tr:hover td {
  background-color: var(--color-paper-warm);
}

@media (max-width: 900px) {
  .policy-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .policy-toc {
    position: static;
  }
  .cookie-table {
    font-size: 12px;
  }
  .cookie-table th,
  .cookie-table td {
    padding: 8px 8px;
  }
}

/* ============================================================
   RESPONSIVE — MOBILE (≤ 640px)
   ============================================================ */
@media (max-width: 640px) {
  :root { --gutter: 16px; }
  .section { padding-top: var(--space-2xl); padding-bottom: var(--space-2xl); }
  .section--lg { padding-top: var(--space-3xl); padding-bottom: var(--space-3xl); }

  .grid-2 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .courses-grid { grid-template-columns: 1fr; }
  .course-card--featured { flex-direction: column; grid-column: span 1; }
  .articles-grid { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .form-row { grid-template-columns: 1fr; }
  .article-row { grid-template-columns: 40px 1fr; }
  .article-row__date { display: none; }
  .blog-hero-row { grid-template-columns: 1fr; }
  .blog-hero-main { border-right: none; border-bottom: 1px solid var(--color-rule); }
  .section-header { flex-direction: column; align-items: flex-start; gap: var(--space-sm); }
  .hero-col--main .hero-content { padding: var(--space-2xl) var(--gutter); }
}