:root {
      --bg: oklch(97% 0.009 115);
      --surface: oklch(100% 0.002 90);
      --surface-2: oklch(93% 0.022 132);
      --fg: oklch(18% 0.025 150);
      --muted: oklch(47% 0.02 145);
      --border: oklch(86% 0.018 128);
      --accent: oklch(42% 0.11 155);
      --accent-soft: oklch(74% 0.08 128);
      --gold: oklch(68% 0.09 74);
      --danger: oklch(48% 0.17 28);
      --success: oklch(45% 0.12 150);
      --display: "Iowan Old Style", "Charter", Georgia, serif;
      --body: "Avenir Next", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
      --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
      --ease: cubic-bezier(0.23, 1, 0.32, 1);
      --shadow: 0 24px 70px color-mix(in oklch, var(--fg) 12%, transparent);
    }

    * { box-sizing: border-box; }
    html { background: var(--bg); scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--fg);
      font: 16px/1.55 var(--body);
      background:
        linear-gradient(180deg, color-mix(in oklch, var(--surface-2) 58%, white), transparent 520px),
        var(--bg);
      text-rendering: optimizeLegibility;
      -webkit-font-smoothing: antialiased;
    }
    body.menu-open { overflow: hidden; }
    a { color: inherit; text-decoration: none; }
    button, input, textarea, select { font: inherit; }
    img { display: block; max-width: 100%; }
    .shell { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 20;
      border-bottom: 1px solid color-mix(in oklch, var(--border) 72%, transparent);
      background: color-mix(in oklch, var(--bg) 88%, transparent);
      backdrop-filter: blur(18px);
    }
    .nav {
      min-height: 74px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }
    .brand {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 700;
      letter-spacing: -0.01em;
    }
    .brand-logo {
      width: clamp(190px, 21vw, 258px);
      height: auto;
      display: block;
    }
    .links {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .links a {
      min-height: 40px;
      display: inline-flex;
      align-items: center;
      padding: 0 13px;
      border-radius: 999px;
      color: var(--muted);
      font-size: 14px;
      font-weight: 560;
      transition: color 180ms var(--ease), background 180ms var(--ease);
    }
    .links a:hover, .links a:focus-visible {
      color: var(--fg);
      background: color-mix(in oklch, var(--surface) 80%, transparent);
      outline: 0;
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .menu-btn {
      display: none;
      width: 44px;
      height: 44px;
      border: 1px solid var(--border);
      border-radius: 999px;
      background: var(--surface);
      color: var(--fg);
      cursor: pointer;
    }
    .menu-btn span,
    .menu-btn::before,
    .menu-btn::after {
      content: "";
      display: block;
      width: 17px;
      height: 1.5px;
      margin: 4px auto;
      border-radius: 999px;
      background: currentColor;
      transition: transform 180ms var(--ease), opacity 160ms var(--ease);
    }
    .menu-open .menu-btn span { opacity: 0; }
    .menu-open .menu-btn::before { transform: translateY(5.5px) rotate(45deg); }
    .menu-open .menu-btn::after { transform: translateY(-5.5px) rotate(-45deg); }

    .btn {
      min-height: 44px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      padding: 0 18px;
      border: 1px solid color-mix(in oklch, var(--fg) 14%, transparent);
      border-radius: 999px;
      background: var(--surface);
      color: var(--fg);
      font-weight: 700;
      letter-spacing: 0.01em;
      cursor: pointer;
      transition: transform 180ms var(--ease), border-color 180ms var(--ease), background 180ms var(--ease);
    }
    .btn:hover { transform: translateY(-1px); border-color: color-mix(in oklch, var(--fg) 28%, transparent); }
    .btn.primary { background: var(--accent); border-color: var(--accent); color: white; }
    .btn.primary:hover { background: color-mix(in oklch, var(--accent) 86%, black); }
    .btn.text { border-color: transparent; background: transparent; padding-inline: 0; }

    .hero {
      padding: clamp(54px, 7vw, 92px) 0 72px;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 0.96fr) minmax(360px, 0.8fr);
      gap: clamp(36px, 6vw, 86px);
      align-items: center;
    }
    .eyebrow {
      width: fit-content;
      display: inline-flex;
      align-items: center;
      gap: 9px;
      margin: 0 0 22px;
      color: var(--accent);
      font: 800 12px/1 var(--mono);
      letter-spacing: 0.08em;
      text-transform: uppercase;
    }
    h1, h2, h3 {
      margin: 0;
      font-family: var(--display);
      font-weight: 520;
      line-height: 1.04;
      letter-spacing: -0.025em;
      text-wrap: balance;
    }
    h1 { max-width: 860px; font-size: clamp(48px, 7.8vw, 92px); }
    h2 { font-size: clamp(34px, 5vw, 62px); }
    h3 { font-size: clamp(25px, 3vw, 35px); }
    .lead {
      max-width: 62ch;
      margin: 26px 0 0;
      color: var(--muted);
      font-size: clamp(18px, 2vw, 22px);
      line-height: 1.48;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 34px;
    }
    .hero-facts {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1px;
      max-width: 780px;
      margin-top: 46px;
      overflow: hidden;
      border: 1px solid var(--border);
      border-radius: 24px;
      background: var(--border);
    }
    .hero-fact {
      min-height: 112px;
      padding: 22px;
      background: var(--surface);
    }
    .hero-fact strong { display: block; margin-bottom: 7px; font-weight: 750; }
    .hero-fact span { color: var(--muted); }

    .photo-stack {
      position: relative;
      min-height: 680px;
      isolation: isolate;
    }
    .photo-card {
      position: absolute;
      overflow: hidden;
      border: 1px solid color-mix(in oklch, white 42%, var(--border));
      border-radius: 34px;
      background: var(--surface);
      box-shadow: var(--shadow);
    }
    .photo-card img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .photo-card.large { inset: 0 58px 116px 0; }
    .photo-card.small {
      right: 0;
      bottom: 0;
      width: min(52%, 270px);
      height: 340px;
      border-radius: 28px;
    }

    .section { padding: clamp(78px, 9vw, 126px) 0; }
    .section.alt {
      border-block: 1px solid var(--border);
      background: color-mix(in oklch, var(--surface) 70%, var(--surface-2));
    }
    .section-head {
      display: grid;
      grid-template-columns: minmax(0, 0.85fr) minmax(270px, 0.45fr);
      gap: 34px;
      align-items: end;
      margin-bottom: 42px;
    }
    .section-copy {
      margin: 0;
      max-width: 48ch;
      color: var(--muted);
      font-size: 17px;
    }

    .course-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 18px;
    }
    .course-card {
      display: flex;
      min-height: 590px;
      flex-direction: column;
      overflow: hidden;
      border: 1px solid var(--border);
      border-radius: 28px;
      background: var(--surface);
      transition: transform 220ms var(--ease), box-shadow 220ms var(--ease), border-color 220ms var(--ease);
    }
    .course-card:hover {
      transform: translateY(-4px);
      border-color: color-mix(in oklch, var(--accent) 35%, var(--border));
      box-shadow: 0 20px 46px color-mix(in oklch, var(--fg) 8%, transparent);
    }
    .course-photo {
      position: relative;
      height: 268px;
      overflow: hidden;
      background: var(--surface-2);
    }
    .course-photo img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 500ms var(--ease);
    }
    .course-card:hover .course-photo img { transform: scale(1.045); }
    .course-body {
      display: flex;
      flex: 1;
      flex-direction: column;
      padding: 26px;
    }
    .course-body p { margin: 18px 0 0; color: var(--muted); }
    .course-body .btn { margin-top: auto; }

    .inside-layout {
      display: grid;
      grid-template-columns: minmax(260px, 0.34fr) minmax(0, 1fr);
      gap: 18px;
      padding: 18px;
      border: 1px solid var(--border);
      border-radius: 30px;
      background: color-mix(in oklch, var(--surface) 68%, var(--surface-2));
    }
    .course-tabs {
      display: grid;
      gap: 10px;
      align-content: start;
    }
    .course-tab {
      min-height: 78px;
      padding: 15px 16px;
      border: 1px solid transparent;
      border-radius: 20px;
      background: transparent;
      color: var(--muted);
      text-align: left;
      cursor: pointer;
      transition: background 180ms var(--ease), border-color 180ms var(--ease), color 180ms var(--ease);
    }
    .course-tab strong, .course-tab span { display: block; color: inherit; }
    .course-tab span { margin-top: 4px; font-size: 13px; }
    .course-tab[aria-selected="true"] {
      border-color: color-mix(in oklch, var(--accent) 32%, var(--border));
      background: var(--surface);
      color: var(--fg);
    }
    .course-panel {
      min-height: 640px;
      padding: clamp(24px, 4vw, 42px);
      border: 1px solid color-mix(in oklch, var(--fg) 9%, transparent);
      border-radius: 24px;
      background: var(--surface);
    }
    .panel-hero {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 230px;
      gap: 26px;
      align-items: start;
      margin-bottom: 28px;
    }
    .panel-hero p {
      max-width: 68ch;
      margin: 16px 0 0;
      color: var(--muted);
      font-size: 18px;
    }
    .panel-summary {
      margin-top: 16px;
      color: var(--muted);
      font-weight: 650;
    }
    .panel-thumb {
      overflow: hidden;
      height: 180px;
      border-radius: 22px;
      border: 1px solid var(--border);
      background: var(--surface-2);
    }
    .panel-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .program-blocks {
      display: grid;
      gap: 14px;
      margin-top: 28px;
    }
    .program-block {
      overflow: hidden;
      border: 1px solid var(--border);
      border-radius: 20px;
      background: color-mix(in oklch, var(--surface-2) 34%, white);
    }
    .program-toggle {
      width: 100%;
      min-height: 68px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      padding: 0 18px 0 22px;
      border: 0;
      background: transparent;
      color: var(--fg);
      text-align: left;
      font-weight: 750;
      cursor: pointer;
    }
    .program-toggle::after {
      content: "+";
      width: 30px;
      height: 30px;
      display: grid;
      place-items: center;
      flex: 0 0 auto;
      border: 1px solid var(--border);
      border-radius: 999px;
      color: var(--muted);
      transition: transform 180ms var(--ease), color 180ms var(--ease);
    }
    .program-block.open .program-toggle::after { transform: rotate(45deg); color: var(--accent); }
    .program-content {
      display: grid;
      grid-template-rows: 0fr;
      transition: grid-template-rows 220ms var(--ease);
    }
    .program-block.open .program-content { grid-template-rows: 1fr; }
    .program-content > div { overflow: hidden; }
    .lesson-list {
      display: grid;
      gap: 10px;
      margin: 0;
      padding: 0 18px 20px 22px;
      list-style: none;
    }
    .lesson-list li {
      display: grid;
      grid-template-columns: 34px 1fr;
      gap: 12px;
      align-items: start;
      padding: 14px;
      border: 1px solid color-mix(in oklch, var(--border) 72%, transparent);
      border-radius: 16px;
      background: var(--surface);
    }
    .lesson-list b {
      min-width: 34px;
      display: grid;
      place-items: center;
      border-radius: 10px;
      background: color-mix(in oklch, var(--surface-2) 68%, white);
      color: var(--accent);
      font: 800 12px/1 var(--mono);
    }
    .lesson-list strong { display: block; margin-bottom: 3px; }
    .lesson-list span { display: block; color: var(--muted); }

    .format-grid {
      display: grid;
      grid-template-columns: minmax(0, 0.75fr) minmax(320px, 0.58fr);
      gap: clamp(30px, 5vw, 66px);
      align-items: start;
    }
    .teacher-card, .contact-card {
      border: 1px solid var(--border);
      border-radius: 30px;
      background: var(--surface);
      box-shadow: var(--shadow);
      overflow: hidden;
    }
    .teacher-card img {
      width: 100%;
      height: 430px;
      object-fit: cover;
      object-position: center 25%;
    }
    .teacher-copy { padding: 26px; }
    .teacher-copy p, .contact-card p { color: var(--muted); }
    .principles {
      display: grid;
      gap: 1px;
      overflow: hidden;
      border: 1px solid var(--border);
      border-radius: 24px;
      background: var(--border);
    }
    .principle {
      display: grid;
      grid-template-columns: 48px 1fr;
      gap: 18px;
      padding: 24px;
      background: var(--surface);
    }
    .num {
      width: 48px;
      height: 48px;
      display: grid;
      place-items: center;
      border-radius: 999px;
      background: color-mix(in oklch, var(--accent) 13%, white);
      color: var(--accent);
      font: 800 13px/1 var(--mono);
      letter-spacing: 0.06em;
    }
    .principle h3 {
      font-family: var(--body);
      font-size: 19px;
      font-weight: 750;
      letter-spacing: 0;
      line-height: 1.25;
    }
    .principle p { margin: 8px 0 0; color: var(--muted); }

    .reviews {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
    }
    .review {
      padding: 24px;
      border: 1px solid var(--border);
      border-radius: 24px;
      background: var(--surface);
    }
    .review blockquote {
      margin: 0;
      color: var(--fg);
      font-family: var(--display);
      font-size: 22px;
      line-height: 1.25;
      letter-spacing: -0.012em;
    }
    .review p { margin: 18px 0 0; color: var(--muted); }

    .signup {
      display: grid;
      grid-template-columns: minmax(0, 1fr);
      gap: clamp(28px, 5vw, 64px);
      align-items: start;
      max-width: 880px;
    }
    .contact-card { padding: clamp(24px, 4vw, 34px); }
    .contact-list {
      display: grid;
      gap: 12px;
      margin: 24px 0 0;
      padding: 0;
      list-style: none;
    }
    .contact-list li {
      padding: 14px 0;
      border-top: 1px solid var(--border);
    }
    .contact-list strong { display: block; font-size: 13px; letter-spacing: 0.02em; }
    .contact-list span { display: block; margin-top: 3px; color: var(--muted); }
    .contact-list a {
      color: var(--fg);
      text-decoration: underline;
      text-decoration-thickness: 1px;
      text-underline-offset: 3px;
    }

    footer {
      padding: 30px 0 44px;
      border-top: 1px solid var(--border);
      color: var(--muted);
      font-size: 14px;
    }
    .footer-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      flex-wrap: wrap;
    }

    @media (max-width: 980px) {
      .hero-grid,
      .section-head,
      .inside-layout,
      .format-grid,
      .signup { grid-template-columns: 1fr; }
      .photo-stack { min-height: 560px; }
      .course-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
      .reviews { grid-template-columns: 1fr; }
      .course-card { min-height: auto; }
      .panel-hero { grid-template-columns: 1fr; }
      .panel-thumb { height: 260px; }
    }
    @media (max-width: 760px) {
      .shell { width: min(100% - 28px, 1180px); }
      .nav { min-height: 68px; }
      .nav-actions .primary { display: none; }
      .menu-btn { display: block; }
      .links {
        position: fixed;
        left: 14px;
        right: 14px;
        top: 78px;
        display: grid;
        gap: 6px;
        padding: 10px;
        border: 1px solid var(--border);
        border-radius: 22px;
        background: var(--surface);
        box-shadow: var(--shadow);
        opacity: 0;
        pointer-events: none;
        transform: translateY(-10px);
        transition: opacity 180ms var(--ease), transform 180ms var(--ease);
      }
      .menu-open .links { opacity: 1; pointer-events: auto; transform: translateY(0); }
      .links a { justify-content: center; min-height: 48px; }
      h1 { font-size: clamp(44px, 13vw, 64px); }
      .hero-facts { grid-template-columns: 1fr; }
      .photo-stack { min-height: 480px; }
      .photo-card.large { inset: 0 0 112px; }
      .photo-card.small { width: 48%; height: 230px; }
      .course-grid { grid-template-columns: 1fr; }
      .course-photo { height: 240px; }
      .course-panel { min-height: 0; }
      .lesson-list li, .principle { grid-template-columns: 1fr; }
      .teacher-card img { height: 340px; }
    }