:root {
    --bg: #f8f7f4;
    --bg-card: #efeeeb;
    --bg-accent: #e8e7e3;
    --text: #3d2c27;
    --text-muted: #7a6b65;
    --text-bright: #2a1e1a;
    --accent: #a07d1c;
    --accent-dim: #a07d1c25;
    --border: #dddcd8;
    --slide-shadow: 0 8px 40px rgba(0,0,0,.1), 0 2px 12px rgba(0,0,0,.06);
  }

  * { margin: 0; padding: 0; box-sizing: border-box; }

  html { scroll-behavior: smooth; }

  body {
    background: var(--bg);
    color: var(--text);
    font-family: Arial, "Helvetica Neue", Helvetica, sans-serif;
    font-size: 1.4rem;
    line-height: 1.8rem;
    -webkit-font-smoothing: antialiased;
  }

  /* ── Hero ── */
  .hero {
    min-height: 80vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 80px 24px;
    position: relative;
    overflow: hidden;
  }

  .hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
      radial-gradient(ellipse 60% 50% at 50% 40%, rgba(160,125,28,.07) 0%, transparent 70%),
      radial-gradient(ellipse 80% 60% at 30% 80%, rgba(160,125,28,.04) 0%, transparent 60%);
    pointer-events: none;
  }

  .hero-tag {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 32px;
    opacity: 0;
    animation: fadeUp .8s ease forwards;
  }

  .hero h1 {
    font-family: Arial, "Helvetica Neue", Helvetica, sans-serif;
    font-size: clamp(36px, 5.5vw, 72px);
    font-weight: 700;
    color: var(--text-bright);
    line-height: 1.15;
    max-width: 820px;
    opacity: 0;
    animation: fadeUp .8s ease .15s forwards;
  }

  .hero h1 em {
    font-style: italic;
    color: var(--accent);
  }

  .hero-sub {
    margin-top: 28px;
    font-size: 1.5rem;
    color: var(--text-muted);
    max-width: 560px;
    opacity: 0;
    animation: fadeUp .8s ease .3s forwards;
  }

  .hero-scroll {
    margin-top: 56px;
    opacity: 0;
    animation: fadeUp .8s ease .5s forwards;
  }

  .hero-scroll a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent);
    text-decoration: none;
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    letter-spacing: 1px;
    text-transform: uppercase;
    transition: opacity .3s;
  }

  .hero-scroll a:hover { opacity: .7; }

  .hero-scroll svg {
    animation: bobDown 2s ease-in-out infinite;
  }

  /* ── Sections ── */
  .container {
    max-width: 860px;
    margin: 0 auto;
    padding: 0 24px;
  }

  .section {
    padding: 100px 0;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity .7s ease, transform .7s ease;
  }

  .section.visible {
    opacity: 1;
    transform: translateY(0);
  }

  .section + .section {
    border-top: 1px solid var(--border);
  }

  .section-num {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 20px;
  }

  .section h2 {
    font-family: Arial, "Helvetica Neue", Helvetica, sans-serif;
    font-size: clamp(26px, 3.5vw, 40px);
    font-weight: 700;
    color: var(--text-bright);
    line-height: 1.25;
    margin-bottom: 36px;
  }

  .section p {
    margin-bottom: 20px;
    color: var(--text);
  }

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

  .section strong {
    color: var(--text-bright);
    font-weight: 700;
  }

  /* ── Slide images ── */
  .slide-img {
    margin: 44px 0;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--slide-shadow);
    border: 1px solid var(--border);
    position: relative;
  }

  .slide-img img {
    display: block;
    width: 100%;
    height: auto;
    cursor: zoom-in;
  }

  /* ── Lightbox ── */
  .lightbox {
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: rgba(0,0,0,.85);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity .3s, visibility .3s;
    cursor: zoom-out;
  }

  .lightbox.active {
    opacity: 1;
    visibility: visible;
  }

  .lightbox img {
    max-width: 92vw;
    max-height: 92vh;
    border-radius: 6px;
    box-shadow: 0 12px 60px rgba(0,0,0,.6);
    transform: scale(.92);
    transition: transform .3s ease;
  }

  .lightbox.active img {
    transform: scale(1);
  }

  /* ── Highlight box ── */
  .highlight-box {
    background: var(--bg-card);
    border-left: 3px solid var(--accent);
    padding: 24px 28px;
    margin: 32px 0;
    border-radius: 0 6px 6px 0;
  }

  .highlight-box p {
    color: var(--text-muted);
    font-size: 1.3rem;
    margin-bottom: 12px;
  }

  .highlight-box p:last-child { margin-bottom: 0; }

  /* ── Bullet list ── */
  .custom-list {
    list-style: none;
    margin: 24px 0;
    padding: 0;
  }

  .custom-list li {
    position: relative;
    padding-left: 24px;
    margin-bottom: 16px;
    color: var(--text);
  }

  .custom-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 11px;
    width: 8px;
    height: 2px;
    background: var(--accent);
  }

  /* ── Divider ── */
  .divider {
    display: flex;
    align-items: center;
    gap: 16px;
    margin: 80px 0;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    letter-spacing: 2px;
  }

  .divider::before, .divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
  }

  /* ── Footer ── */
  .footer {
    text-align: center;
    padding: 80px 24px;
    border-top: 1px solid var(--border);
  }

  .footer p {
    color: var(--text-muted);
    font-size: 1.1rem;
  }

  .footer .accent-link {
    color: var(--accent);
    text-decoration: none;
    border-bottom: 1px solid var(--accent-dim);
    transition: border-color .3s;
  }

  .footer .accent-link:hover {
    border-color: var(--accent);
  }

  /* ── Animations ── */
  @keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
  }

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

  /* ── Responsive ── */
  @media (max-width: 600px) {
    body { font-size: 1.2rem; line-height: 1.6rem; }
    .section { padding: 64px 0; }
    .highlight-box { padding: 20px; }
  }