/* ============================================================
       CSS CUSTOM PROPERTIES
       ============================================================ */
    :root {
      /* Brand Colors */
      --blue-deep: #0700dd;
      --blue-medium: #1565c0;
      --blue-light: #42a5f5;
      --amber: #ff8c00;
      --amber-light: #ffb300;
      --golden: #ffc107;
      --violet: #7c3aed;
      --violet-light: #9c27b0;

      /* Theme Colors (Dark default) */
      --color-bg: #0d1117;
      --color-surface: #161b22;
      --color-border: #30363d;
      --color-text: #e6edf3;
      --color-text-secondary: #8b949e;
      --color-heading: #ffffff;
      --color-link: #42a5f5;
      --color-link-hover: #90caf9;
      --color-code-bg: #1a1f2b;
      --color-code-text: #e6edf3;

      /* Functional Colors */
      --success: #22c55e;
      --warning: #f59e0b;
      --error: #ef4444;
      --info: #3b82f6;

      /* Gradients */
      --gradient-main: linear-gradient(135deg, #0700dd 0%, #7c3aed 50%, #ff8c00 100%);
      --gradient-amber: linear-gradient(135deg, #ff8c00 0%, #ffb300 100%);
      --gradient-subtle: linear-gradient(180deg, rgba(7, 0, 221, 0.08) 0%, transparent 100%);

      /* Typography */
      --font-heading: 'Space Grotesk', 'Noto Sans Arabic', system-ui, -apple-system, sans-serif;
      --font-body: 'Noto Sans Arabic', 'Tahoma', 'Arial', sans-serif;
      --font-code: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;

      /* Spacing */
      --space-xs: 0.25rem;
      --space-sm: 0.5rem;
      --space-md: 1rem;
      --space-lg: 1.5rem;
      --space-xl: 2rem;
      --space-2xl: 3rem;
      --space-3xl: 4rem;
      --space-4xl: 6rem;

      /* Layout */
      --max-width-content: 780px;
      --max-width-page: 1200px;
      --max-width-wide: 1400px;

      /* Radius */
      --radius-sm: 4px;
      --radius-md: 8px;
      --radius-lg: 16px;
      --radius-full: 9999px;

      /* Shadows */
      --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
      --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.4);
      --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
      --glow-amber: 0 0 20px rgba(255, 140, 0, 0.3);
      --glow-amber-strong: 0 0 40px rgba(255, 140, 0, 0.4), 0 0 80px rgba(255, 140, 0, 0.15);
      --glow-blue: 0 0 20px rgba(7, 0, 221, 0.3);
      --glow-golden: 0 0 20px rgba(255, 193, 7, 0.4), 0 0 40px rgba(255, 193, 7, 0.15);

      /* Transitions */
      --transition-fast: 150ms ease-in-out;
      --transition-medium: 300ms ease-in-out;
      --transition-slow: 500ms ease-in-out;
    }

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

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

    body {
      font-family: var(--font-body);
      font-size: 1.125rem;
      line-height: 1.8;
      color: var(--color-text);
      background-color: var(--color-bg);
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
      overflow-x: hidden;
    }

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

    a {
      color: var(--color-link);
      text-decoration: none;
      transition: color var(--transition-fast);
    }

    a:hover {
      color: var(--color-link-hover);
    }

    :focus-visible {
      outline: 2px solid var(--amber);
      outline-offset: 3px;
    }

    ::selection {
      background: rgba(255, 140, 0, 0.3);
      color: var(--color-heading);
    }

    /* ============================================================
       SKIP LINK
       ============================================================ */
    .skip-link {
      position: absolute;
      top: -100%;
      right: var(--space-md);
      background: var(--amber);
      color: #000;
      padding: var(--space-sm) var(--space-md);
      border-radius: var(--radius-sm);
      font-family: var(--font-heading);
      font-weight: 600;
      font-size: 0.875rem;
      z-index: 1000;
      transition: top var(--transition-fast);
    }

    .skip-link:focus {
      top: var(--space-md);
    }

    /* ============================================================
       TYPOGRAPHY
       ============================================================ */
    h1, h2, h3, h4 {
      font-family: var(--font-heading);
      color: var(--color-heading);
      line-height: 1.3;
      letter-spacing: -0.01em;
    }

    h1 {
      font-size: clamp(2rem, 5vw, 2.75rem);
      font-weight: 700;
    }

    h2 {
      font-size: clamp(1.6rem, 4vw, 2.25rem);
      font-weight: 600;
      margin-bottom: var(--space-lg);
    }

    h3 {
      font-size: clamp(1.2rem, 3vw, 1.5rem);
      font-weight: 600;
      margin-bottom: var(--space-md);
    }

    h4 {
      font-size: 1.25rem;
      font-weight: 500;
      margin-bottom: var(--space-sm);
    }

    p {
      margin-bottom: var(--space-lg);
    }

    strong {
      font-weight: 600;
      color: var(--color-heading);
    }

    blockquote {
      border-right: 3px solid var(--amber);
      border-left: none;
      padding: var(--space-md) var(--space-xl) var(--space-md) 0;
      margin: var(--space-xl) 0;
      font-style: normal;
      color: var(--color-text);
      background: rgba(255, 140, 0, 0.04);
      border-radius: var(--radius-md) 0 0 var(--radius-md);
    }

    blockquote p:last-child {
      margin-bottom: 0;
    }

    code {
      font-family: var(--font-code);
      font-size: 0.9em;
      background: var(--color-code-bg);
      color: var(--amber-light);
      padding: 0.15em 0.4em;
      border-radius: var(--radius-sm);
      direction: ltr;
    }

    /* ============================================================
       LAYOUT UTILITIES
       ============================================================ */
    .container {
      max-width: var(--max-width-content);
      margin: 0 auto;
      padding: 0 var(--space-xl);
    }

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

    .section {
      padding: var(--space-4xl) 0;
    }

    .section--surface {
      background-color: var(--color-surface);
    }

    .section-label {
      font-family: var(--font-heading);
      font-weight: 600;
      font-size: 0.8125rem;
      text-transform: uppercase;
      letter-spacing: 0.1em;
      color: var(--amber);
      margin-bottom: var(--space-md);
      display: block;
    }

    .section-title {
      margin-bottom: var(--space-2xl);
    }

    .gradient-text {
      background: var(--gradient-main);
      -webkit-background-clip: text;
      background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .text-amber {
      color: var(--amber);
    }

    .text-secondary {
      color: var(--color-text-secondary);
    }

    .text-center {
      text-align: center;
    }

    /* ============================================================
       HEADER / NAVIGATION
       ============================================================ */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(13, 17, 23, 0.85);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--color-border);
      padding: var(--space-md) 0;
    }

    .nav-inner {
      max-width: var(--max-width-page);
      margin: 0 auto;
      padding: 0 var(--space-xl);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: var(--space-lg);
    }

    .nav-logo {
      display: flex;
      align-items: center;
      gap: var(--space-sm);
      text-decoration: none;
    }

    .nav-logo img {
      width: 36px;
      height: 36px;
    }

    .nav-logo-text {
      font-family: var(--font-heading);
      font-weight: 700;
      font-size: 1.125rem;
      color: var(--amber);
      text-transform: uppercase;
      letter-spacing: 0.04em;
    }

    .nav-links {
      display: none;
      list-style: none;
      gap: var(--space-lg);
      align-items: center;
      flex-direction: row-reverse;
    }

    .nav-links a {
      font-family: var(--font-heading);
      font-weight: 500;
      font-size: 0.875rem;
      color: var(--color-text-secondary);
      transition: color var(--transition-fast);
    }

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

    .nav-cta {
      font-family: var(--font-heading);
      font-weight: 600;
      font-size: 0.875rem;
      color: #000 !important;
      background: var(--gradient-amber);
      padding: 0.5rem 1.25rem;
      border-radius: var(--radius-full);
      text-decoration: none;
      transition: box-shadow var(--transition-fast), transform var(--transition-fast);
      white-space: nowrap;
    }

    .nav-cta:hover {
      box-shadow: var(--glow-amber);
      transform: translateY(-1px);
      color: #000 !important;
    }

    @media (min-width: 768px) {
      .nav-links {
        display: flex;
      }
    }

    /* ============================================================
       HERO SECTION
       ============================================================ */
    .hero {
      position: relative;
      padding: var(--space-4xl) 0;
      text-align: center;
      overflow: hidden;
      min-height: 90vh;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .hero::before {
      content: '';
      position: absolute;
      top: -40%;
      left: 50%;
      transform: translateX(-50%);
      width: 800px;
      height: 800px;
      background: radial-gradient(circle, rgba(255, 140, 0, 0.1) 0%, rgba(124, 58, 237, 0.06) 40%, transparent 70%);
      border-radius: 50%;
      pointer-events: none;
    }

    .hero::after {
      content: '';
      position: absolute;
      bottom: -20%;
      left: 50%;
      transform: translateX(-50%);
      width: 600px;
      height: 600px;
      background: radial-gradient(circle, rgba(7, 0, 221, 0.08) 0%, transparent 70%);
      border-radius: 50%;
      pointer-events: none;
    }

    .hero-content {
      position: relative;
      z-index: 1;
      max-width: 720px;
      margin: 0 auto;
      padding: 0 var(--space-xl);
    }

    .hero-logo {
      width: clamp(180px, 30vw, 300px);
      height: auto;
      margin: 0 auto var(--space-xl);
      filter: drop-shadow(0 0 30px rgba(255, 140, 0, 0.2));
    }

    .hero-brand {
      font-family: var(--font-heading);
      font-weight: 700;
      font-size: clamp(2rem, 6vw, 3.5rem);
      color: var(--amber);
      text-transform: uppercase;
      letter-spacing: 0.06em;
      margin-bottom: var(--space-lg);
      line-height: 1;
    }

    .hero-tagline {
      font-family: var(--font-body);
      font-weight: 700;
      font-size: clamp(1.4rem, 3.5vw, 2rem);
      color: var(--color-heading);
      margin-bottom: var(--space-lg);
      line-height: 1.4;
    }

    .hero-sub {
      font-family: var(--font-body);
      font-size: clamp(1rem, 2vw, 1.125rem);
      color: var(--color-text-secondary);
      max-width: 600px;
      margin: 0 auto var(--space-2xl);
      line-height: 1.8;
    }

    .hero-cta {
      display: inline-block;
      font-family: var(--font-heading);
      font-weight: 600;
      font-size: 1.125rem;
      color: #000;
      background: var(--gradient-amber);
      padding: 1rem 2.5rem;
      border-radius: var(--radius-full);
      text-decoration: none;
      transition: box-shadow var(--transition-medium), transform var(--transition-fast);
      box-shadow: var(--glow-amber);
    }

    .hero-cta:hover {
      box-shadow: var(--glow-amber-strong);
      transform: translateY(-2px);
      color: #000;
    }

    .hero-beta-note {
      margin-top: var(--space-lg);
      font-family: var(--font-heading);
      font-size: 0.8125rem;
      color: var(--color-text-secondary);
      letter-spacing: 0.05em;
    }

    /* ============================================================
       CONTENT SECTIONS
       ============================================================ */
    .prose {
      max-width: var(--max-width-content);
      margin: 0 auto;
    }

    .prose p {
      margin-bottom: var(--space-lg);
    }

    .prose h3 {
      margin-top: var(--space-2xl);
    }

    /* ============================================================
       PILLARS SECTION
       ============================================================ */
    .pillars-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: var(--space-xl);
      margin-top: var(--space-2xl);
    }

    .pillar-card {
      background: var(--color-bg);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      padding: var(--space-xl) var(--space-xl) var(--space-lg);
      transition: border-color var(--transition-medium), box-shadow var(--transition-medium);
      position: relative;
      text-align: right;
    }

    .pillar-card:hover {
      border-color: rgba(255, 140, 0, 0.3);
      box-shadow: 0 0 30px rgba(255, 140, 0, 0.06);
    }

    .pillar-number {
      font-family: var(--font-heading);
      font-weight: 700;
      font-size: 0.75rem;
      color: var(--amber);
      background: rgba(255, 140, 0, 0.1);
      border: 1px solid rgba(255, 140, 0, 0.2);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 2rem;
      height: 2rem;
      border-radius: var(--radius-full);
      margin-bottom: var(--space-md);
    }

    .pillar-title {
      font-family: var(--font-body);
      font-weight: 600;
      font-size: 1.25rem;
      color: var(--color-heading);
      margin-bottom: var(--space-sm);
    }

    .pillar-card p {
      color: var(--color-text-secondary);
      font-size: 1rem;
      line-height: 1.75;
      margin-bottom: 0;
    }

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

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

    /* ============================================================
       LADDER SECTION
       ============================================================ */
    .ladder-list {
      list-style: none;
      margin-top: var(--space-2xl);
      position: relative;
    }

    .ladder-list::before {
      content: '';
      position: absolute;
      right: 1.5rem;
      left: auto;
      top: 0;
      bottom: 0;
      width: 2px;
      background: linear-gradient(180deg, var(--blue-deep), var(--violet), var(--amber));
      border-radius: 1px;
    }

    .ladder-item {
      position: relative;
      padding-right: 4rem;
      padding-left: 0;
      padding-bottom: var(--space-2xl);
    }

    .ladder-item:last-child {
      padding-bottom: 0;
    }

    .ladder-rung {
      position: absolute;
      right: 0;
      left: auto;
      top: 0;
      width: 3rem;
      height: 3rem;
      border-radius: var(--radius-full);
      background: var(--color-surface);
      border: 2px solid var(--color-border);
      display: flex;
      align-items: center;
      justify-content: center;
      font-family: var(--font-heading);
      font-weight: 700;
      font-size: 0.875rem;
      color: var(--amber);
      z-index: 1;
      transition: border-color var(--transition-medium), box-shadow var(--transition-medium);
    }

    .ladder-item:hover .ladder-rung {
      border-color: var(--amber);
      box-shadow: var(--glow-amber);
    }

    .ladder-reaction {
      font-family: var(--font-body);
      font-weight: 600;
      font-size: 1.125rem;
      color: var(--color-heading);
      margin-bottom: var(--space-sm);
    }

    .ladder-item p {
      color: var(--color-text-secondary);
      font-size: 1rem;
      line-height: 1.75;
    }

    @media (min-width: 768px) {
      .ladder-list::before {
        right: 1.75rem;
      }
      .ladder-item {
        padding-right: 5rem;
      }
      .ladder-rung {
        width: 3.5rem;
        height: 3.5rem;
      }
    }

    /* ============================================================
       DIFFERENCE SECTION
       ============================================================ */
    .diff-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: var(--space-lg);
      margin-top: var(--space-2xl);
    }

    .diff-card {
      background: var(--color-surface);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      padding: var(--space-xl);
      text-align: right;
    }

    .diff-not {
      font-family: var(--font-body);
      font-weight: 600;
      font-size: 0.875rem;
      color: var(--color-text-secondary);
      letter-spacing: 0.02em;
      margin-bottom: var(--space-xs);
    }

    .diff-is {
      font-family: var(--font-body);
      font-weight: 600;
      font-size: 1.125rem;
      color: var(--amber);
      margin-bottom: var(--space-sm);
    }

    .diff-card p {
      font-size: 1rem;
      color: var(--color-text-secondary);
      line-height: 1.75;
      margin-bottom: 0;
    }

    @media (min-width: 768px) {
      .diff-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    /* ============================================================
       LESSONS / CURRICULUM
       ============================================================ */
    .lessons-intro {
      margin-bottom: var(--space-2xl);
    }

    .lessons-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: var(--space-md);
    }

    .lesson-card {
      background: var(--color-surface);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      padding: var(--space-md) var(--space-lg);
      display: flex;
      align-items: center;
      gap: var(--space-md);
      transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
      position: relative;
      overflow: hidden;
      text-align: right;
      flex-direction: row-reverse;
    }

    .lesson-card:hover {
      border-color: rgba(255, 140, 0, 0.2);
    }

    .lesson-card--advanced {
      border-color: rgba(255, 193, 7, 0.3);
      background: linear-gradient(135deg, var(--color-surface) 0%, rgba(255, 193, 7, 0.04) 100%);
    }

    .lesson-card--advanced:hover {
      border-color: rgba(255, 193, 7, 0.5);
      box-shadow: var(--glow-golden);
    }

    .lesson-number {
      font-family: var(--font-heading);
      font-weight: 700;
      font-size: 0.8125rem;
      color: var(--color-text-secondary);
      background: rgba(255, 255, 255, 0.05);
      min-width: 2.25rem;
      height: 2.25rem;
      border-radius: var(--radius-full);
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }

    .lesson-card--advanced .lesson-number {
      color: var(--golden);
      background: rgba(255, 193, 7, 0.1);
      border: 1px solid rgba(255, 193, 7, 0.2);
    }

    .lesson-title {
      font-family: var(--font-body);
      font-weight: 500;
      font-size: 0.9375rem;
      color: var(--color-text);
      flex: 1;
      line-height: 1.5;
    }

    .lesson-badges {
      display: flex;
      gap: var(--space-sm);
      align-items: center;
      flex-shrink: 0;
    }

    /* Badges */
    .badge {
      font-family: var(--font-heading);
      font-weight: 600;
      font-size: 0.625rem;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      padding: 0.2em 0.6em;
      border-radius: var(--radius-sm);
      white-space: nowrap;
      line-height: 1.6;
    }

    .badge--beta {
      color: var(--amber);
      background: rgba(255, 140, 0, 0.1);
      border: 1px solid rgba(255, 140, 0, 0.25);
    }

    .badge--free {
      color: var(--success);
      background: rgba(34, 197, 94, 0.1);
      border: 1px solid rgba(34, 197, 94, 0.25);
    }

    .badge--advanced {
      color: var(--golden);
      background: rgba(255, 193, 7, 0.12);
      border: 1px solid rgba(255, 193, 7, 0.3);
      box-shadow: 0 0 8px rgba(255, 193, 7, 0.1);
    }

    .lesson-lock {
      color: var(--color-text-secondary);
      font-size: 0.875rem;
      opacity: 0.5;
      flex-shrink: 0;
    }

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

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

    /* ============================================================
       THE MODEL SECTION (Free for Everyone)
       Hero "$0" card in the spotlight + two balanced secondary cards.
       Logical properties used for RTL-friendliness.
       ============================================================ */
    .model-philosophy {
      text-align: center;
      max-width: 640px;
      margin-inline: auto;
      margin-block-end: var(--space-3xl);
    }

    /* Stack: hero on its own row, secondary cards in a row beneath.
       Card count never tied to a fixed column template -> no crooked grid. */
    .model-grid {
      display: flex;
      flex-direction: column;
      gap: var(--space-lg);
      max-width: 960px;
      margin-inline: auto;
    }

    /* Shared card base */
    .model-card {
      background: var(--color-surface);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      padding: var(--space-xl);
      display: flex;
      flex-direction: column;
      transition: border-color var(--transition-medium), box-shadow var(--transition-medium), transform var(--transition-medium);
    }

    .model-card:hover {
      transform: translateY(-2px);
    }

    /* --- HERO: the free method, in the spotlight --- */
    .model-card--hero {
      text-align: center;
      align-items: center;
      border-color: var(--amber);
      box-shadow: var(--glow-amber);
      background: linear-gradient(180deg, rgba(255, 140, 0, 0.07) 0%, var(--color-surface) 100%);
      padding-block: var(--space-2xl);
    }

    .model-card--hero:hover {
      box-shadow: var(--glow-amber-strong);
    }

    .model-card--hero .model-label {
      color: var(--amber-light);
    }

    .model-amount {
      font-family: var(--font-heading);
      font-weight: 700;
      font-size: clamp(3rem, 8vw, 4.5rem);
      line-height: 1;
      color: var(--amber);
      margin-block: var(--space-xs) var(--space-md);
      direction: ltr;
    }

    .model-card--hero .model-desc {
      color: var(--color-text);
      font-size: 1.0625rem;
      max-width: 52ch;
      margin-inline: auto;
    }

    /* --- SECONDARY: two balanced supporting cards --- */
    .model-secondary {
      display: grid;
      grid-template-columns: 1fr;
      gap: var(--space-lg);
      align-items: stretch;
    }

    .model-card--secondary {
      height: 100%;
    }

    /* Fixed-height label slot keeps headers aligned whether the
       title wraps to 1 or 2 lines (no luck-based alignment). */
    .model-label {
      font-family: var(--font-heading);
      font-weight: 600;
      font-size: 0.8125rem;
      text-transform: uppercase;
      letter-spacing: 0.06em;
      color: var(--color-text-secondary);
      margin: 0;
    }

    .model-card--secondary .model-label {
      min-height: 2.4em;
      display: flex;
      align-items: center;
    }

    .model-kicker {
      font-family: var(--font-heading);
      font-weight: 700;
      font-size: 1.5rem;
      line-height: 1.2;
      color: var(--color-heading);
      margin-block: var(--space-xs) var(--space-md);
    }

    .model-desc {
      font-size: 0.9375rem;
      color: var(--color-text-secondary);
      line-height: 1.6;
      margin: 0;
    }

    /* Note pinned to the card bottom so secondary cards stay aligned. */
    .model-note {
      font-family: var(--font-heading);
      font-size: 0.75rem;
      color: var(--color-text-secondary);
      margin-block-start: auto;
      padding-block-start: var(--space-md);
      border-block-start: 1px solid var(--color-border);
    }

    .model-card--secondary .model-note {
      margin-block-start: var(--space-md);
    }

    .model-card--secondary .model-desc {
      flex: 1 1 auto;
    }

    .model-footer {
      text-align: center;
      margin-block-start: var(--space-2xl);
    }

    .model-footer p {
      color: var(--color-text-secondary);
      font-size: 1rem;
    }

    @media (min-width: 768px) {
      .model-secondary {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    /* ============================================================
       FAQ SECTION
       ============================================================ */
    .faq-list {
      max-width: var(--max-width-content);
      margin: var(--space-2xl) auto 0;
    }

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

    .faq-item:first-child {
      border-top: 1px solid var(--color-border);
    }

    .faq-item summary {
      font-family: var(--font-body);
      font-weight: 600;
      font-size: 1.0625rem;
      color: var(--color-heading);
      padding: var(--space-lg) 0;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: var(--space-md);
      list-style: none;
      transition: color var(--transition-fast);
      text-align: right;
    }

    .faq-item summary::-webkit-details-marker {
      display: none;
    }

    .faq-item summary::before {
      content: '+';
      font-family: var(--font-heading);
      font-weight: 500;
      font-size: 1.5rem;
      color: var(--color-text-secondary);
      flex-shrink: 0;
      transition: color var(--transition-fast), transform var(--transition-fast);
      line-height: 1;
      order: -1;
    }

    .faq-item summary::after {
      display: none;
    }

    .faq-item[open] summary::before {
      content: '\2212';
      color: var(--amber);
    }

    .faq-item summary:hover {
      color: var(--amber);
    }

    .faq-answer {
      padding: 0 0 var(--space-lg);
      font-size: 1rem;
      color: var(--color-text-secondary);
      line-height: 1.8;
      text-align: right;
    }

    .faq-answer p {
      margin-bottom: var(--space-md);
    }

    .faq-answer p:last-child {
      margin-bottom: 0;
    }

    /* ============================================================
       WAITLIST SECTION
       ============================================================ */
    .waitlist {
      text-align: center;
      position: relative;
      overflow: hidden;
    }

    .waitlist::before {
      content: '';
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      width: 600px;
      height: 600px;
      background: radial-gradient(circle, rgba(255, 140, 0, 0.06) 0%, transparent 70%);
      border-radius: 50%;
      pointer-events: none;
    }

    .waitlist-content {
      position: relative;
      z-index: 1;
    }

    .waitlist h2 {
      color: var(--color-heading);
    }

    .waitlist-sub {
      max-width: 560px;
      margin: 0 auto var(--space-2xl);
      color: var(--color-text-secondary);
    }

    .waitlist-form {
      display: flex;
      flex-direction: column;
      gap: var(--space-md);
      max-width: 420px;
      margin: 0 auto;
    }

    .waitlist-form label {
      position: absolute;
      width: 1px;
      height: 1px;
      overflow: hidden;
      clip: rect(0 0 0 0);
      white-space: nowrap;
    }

    .waitlist-form input {
      font-family: var(--font-body);
      font-size: 1rem;
      padding: 0.875rem 1.25rem;
      border-radius: var(--radius-md);
      border: 1px solid var(--color-border);
      background: var(--color-surface);
      color: var(--color-text);
      outline: none;
      transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
      text-align: right;
    }

    .waitlist-form input::placeholder {
      color: var(--color-text-secondary);
      text-align: right;
    }

    .waitlist-form input:focus {
      border-color: var(--amber);
      box-shadow: 0 0 0 3px rgba(255, 140, 0, 0.15);
    }

    .waitlist-form button {
      font-family: var(--font-body);
      font-weight: 600;
      font-size: 1.0625rem;
      color: #000;
      background: var(--gradient-amber);
      border: none;
      padding: 1rem 2rem;
      border-radius: var(--radius-md);
      cursor: pointer;
      transition: box-shadow var(--transition-medium), transform var(--transition-fast);
      box-shadow: var(--glow-amber);
    }

    .waitlist-form button:hover {
      box-shadow: var(--glow-amber-strong);
      transform: translateY(-1px);
    }

    .waitlist-form button:focus-visible {
      outline: 2px solid var(--amber-light);
      outline-offset: 3px;
    }

    .waitlist-privacy {
      margin-top: var(--space-lg);
      font-size: 0.8125rem;
      color: var(--color-text-secondary);
    }

    /* ============================================================
       FOOTER
       ============================================================ */
    .site-footer {
      border-top: 1px solid var(--color-border);
      padding: var(--space-2xl) 0;
      text-align: center;
    }

    .footer-brand {
      font-family: var(--font-heading);
      font-weight: 700;
      font-size: 1rem;
      color: var(--amber);
      text-transform: uppercase;
      letter-spacing: 0.04em;
      margin-bottom: var(--space-xs);
    }

    .footer-tagline {
      font-size: 0.875rem;
      color: var(--color-text-secondary);
      margin-bottom: var(--space-lg);
    }

    .footer-creator {
      font-size: 0.875rem;
      color: var(--color-text-secondary);
      margin-bottom: var(--space-md);
    }

    .footer-links {
      display: flex;
      justify-content: center;
      gap: var(--space-lg);
      margin-bottom: var(--space-lg);
      flex-wrap: wrap;
    }

    .footer-links a {
      font-family: var(--font-heading);
      font-weight: 500;
      font-size: 0.875rem;
      color: var(--color-text-secondary);
    }

    .footer-links a:hover {
      color: var(--amber);
    }

    .footer-copy {
      font-size: 0.8125rem;
      color: var(--color-text-secondary);
      opacity: 0.7;
    }

    /* ============================================================
       SEPARATOR FLOURISH
       ============================================================ */
    .section-divider {
      width: 60px;
      height: 3px;
      background: var(--gradient-main);
      border-radius: 2px;
      margin: 0 auto var(--space-2xl);
    }

    .section-divider--right {
      margin-right: 0;
      margin-left: auto;
    }

    /* ============================================================
       REDUCED MOTION
       ============================================================ */
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
      }
      html {
        scroll-behavior: auto;
      }
    }

    /* ============================================================
       PRINT STYLES
       ============================================================ */
    @media print {
      .site-header, .hero::before, .hero::after, .waitlist, .nav-cta {
        display: none;
      }
      body {
        background: white;
        color: #1f2328;
      }
      h1, h2, h3, h4 {
        color: #1f2328;
      }
      a {
        color: #0969da;
      }
      a[href]::after {
        content: ' (' attr(href) ')';
        font-size: 0.8em;
        color: #656d76;
      }
    }

    /* ============================================================
       RTL Overrides for Arabic
       ============================================================ */
    [dir="rtl"] {
      text-align: right;
    }

    [dir="rtl"] blockquote {
      border-left: none;
      border-right: 4px solid var(--amber);
      padding-left: 0;
      padding-right: 1.5rem;
      margin-left: 0;
      margin-right: 0;
    }

    [dir="rtl"] .nav-links {
      flex-direction: row-reverse;
    }

    [dir="rtl"] details summary {
      text-align: right;
    }

    [dir="rtl"] .lesson-card {
      text-align: right;
    }

    [dir="rtl"] .pillar-card {
      text-align: right;
    }

    [dir="rtl"] .section-divider--right {
      margin-left: auto;
      margin-right: 0;
    }

    [dir="rtl"] .diff-card {
      text-align: right;
    }

    [dir="rtl"] .ladder-item {
      padding-right: 4rem;
      padding-left: 0;
    }

    [dir="rtl"] .ladder-rung {
      right: 0;
      left: auto;
    }

    [dir="rtl"] .ladder-list::before {
      right: 1.5rem;
      left: auto;
    }

    @media (min-width: 768px) {
      [dir="rtl"] .ladder-list::before {
        right: 1.75rem;
        left: auto;
      }
      [dir="rtl"] .ladder-item {
        padding-right: 5rem;
        padding-left: 0;
      }
    }

    /* ============================================================
       LANGUAGE BAR
       ============================================================ */
    .lang-bar {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 0.25rem;
      padding: 0.4rem 1rem;
      background: var(--color-surface);
      border-bottom: 1px solid var(--color-border);
      flex-wrap: wrap;
    }
    .lang-bar a {
      color: var(--color-text-secondary);
      text-decoration: none;
      font-family: var(--font-heading);
      font-size: 0.75rem;
      font-weight: 500;
      padding: 0.2rem 0.5rem;
      border-radius: 4px;
      transition: color 0.2s, background 0.2s;
      letter-spacing: 0.02em;
    }
    .lang-bar a:hover {
      color: var(--color-text);
      background: rgba(255, 140, 0, 0.1);
    }
    .lang-bar a:focus-visible {
      outline: 2px solid var(--amber);
      outline-offset: 2px;
    }
    .lang-bar a.active {
      color: var(--amber);
      background: rgba(255, 140, 0, 0.15);
      font-weight: 700;
    }
    .lang-bar-sep {
      color: var(--color-border);
      font-size: 0.6rem;
      user-select: none;
    }
    .footer-lang-bar {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 0.4rem;
      padding: 1rem 0 0.5rem;
      flex-wrap: wrap;
    }
    .footer-lang-bar a {
      color: var(--color-text-secondary);
      text-decoration: none;
      font-family: var(--font-heading);
      font-size: 0.8rem;
      font-weight: 500;
      padding: 0.25rem 0.6rem;
      border-radius: 4px;
      border: 1px solid transparent;
      transition: all 0.2s;
    }
    .footer-lang-bar a:hover {
      color: var(--color-text);
      border-color: var(--color-border);
    }
    .footer-lang-bar a:focus-visible {
      outline: 2px solid var(--amber);
      outline-offset: 2px;
    }
    .footer-lang-bar a.active {
      color: var(--amber);
      border-color: var(--amber);
      font-weight: 700;
    }
    [dir="rtl"] .lang-bar,
    [dir="rtl"] .footer-lang-bar {
      direction: ltr;
    }

    /* ============================================================
       CONTENT IMAGES
       ============================================================ */
    .section-image {
      width: 100%;
      max-width: 780px;
      margin: 2rem auto;
      border-radius: 12px;
      display: block;
      opacity: 0.9;
    }
    .section-image--wide {
      max-width: 960px;
    }
    .section-image--bg {
      position: absolute;
      top: 0; left: 0; width: 100%; height: 100%;
      object-fit: cover;
      opacity: 0.15;
      z-index: 0;
      border-radius: 0;
    }
    .waitlist { position: relative; overflow: hidden; }
    .waitlist > .container { position: relative; z-index: 1; }
    @media (max-width: 640px) {
      .section-image { border-radius: 8px; margin: 1.5rem auto; }
    }


/* ===== T-CSS-CONTACT (multipage spec W3.5): generic /contact/ form styling, scoped to #contact-form ===== */
#contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  max-width: 560px;
}
#contact-form label {
  display: block;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-heading);
  margin-bottom: var(--space-xs);
}
#contact-form input,
#contact-form textarea {
  font-family: var(--font-body);
  font-size: 1rem;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  padding: 0.875rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
#contact-form textarea {
  min-height: 8rem;
  resize: vertical;
}
#contact-form input::placeholder,
#contact-form textarea::placeholder {
  color: var(--color-text-secondary);
}
#contact-form input:focus,
#contact-form textarea:focus {
  border-color: var(--amber);
  box-shadow: 0 0 0 3px rgba(255, 140, 0, 0.15);
}
#contact-form button[type="submit"] {
  align-self: flex-start;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.0625rem;
  color: #000;
  background: var(--gradient-amber);
  border: none;
  border-radius: var(--radius-md);
  padding: 0.875rem 2rem;
  cursor: pointer;
  transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}
#contact-form button[type="submit"]:hover {
  box-shadow: var(--glow-amber-strong);
  transform: translateY(-1px);
}
#contact-form .form-result {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  min-height: 1.25rem;
}

/* T-CSS-CONTACT RTL extras (ar only) */
[dir="rtl"] #contact-form label,
[dir="rtl"] #contact-form input,
[dir="rtl"] #contact-form textarea { text-align: right; }
[dir="rtl"] #contact-form button[type="submit"] { align-self: flex-end; }


/* ===== T-CSS-WAITLIST (multipage spec W3.5): waitlist new fields (select / consent / result) ===== */
.waitlist-form select {
  font-family: var(--font-body);
  font-size: 1rem;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  padding: 0.875rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.waitlist-form select:focus {
  border-color: var(--amber);
  box-shadow: 0 0 0 3px rgba(255, 140, 0, 0.15);
}
.waitlist-consent {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  text-align: left;
}
.waitlist-consent input[type="checkbox"] {
  margin-top: 0.2rem;
  width: 1rem;
  height: 1rem;
  flex: 0 0 auto;
  accent-color: var(--amber);
}
.waitlist-consent a {
  color: var(--color-link);
  text-decoration: underline;
}
.waitlist-consent a:hover { color: var(--color-link-hover); }
.waitlist-result {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  min-height: 1.25rem;
}

/* T-CSS-WAITLIST RTL extras (ar only) */
[dir="rtl"] .waitlist-form select { text-align: right; }
[dir="rtl"] .waitlist-consent { text-align: right; }
[dir="rtl"] .waitlist-consent { flex-direction: row-reverse; }


/* ===== T-CSS-SENT (multipage spec W3.5): Option C no-JS reveal ===== */
#sent { display: none; }
#sent:target { display: block; }
#waitlist-sent { display: none; }
#waitlist-sent:target { display: block; }
.form-sent,
.waitlist-sent {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--success);
  background: rgba(34, 197, 94, 0.08);
  border: 1px solid rgba(34, 197, 94, 0.3);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  margin-top: var(--space-md);
}