*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
  :root {
    --ink: #0f0f0e;
    --ink-mid: #3d3c38;
    --ink-muted: #7a7870;
    --rule: #d4d0c8;
    --accent: #1a3a2e;
    --accent-warm: #c8431a;
    --bg: #f5f2eb;
    --card: #eeeae0;
  }
  html, body { width: 100%; background: var(--bg); }
  body { font-family: 'Instrument Sans', sans-serif; color: var(--ink); }

  .container {
    max-width: 1350px;
    margin: 0 auto;
    padding: 0 50px;
    width: 100%;
    position: relative;
  }

  nav { border-bottom: 1px solid var(--rule); }
  .nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 0;
  }
  .nav-name {
    font-family: 'DM Mono', monospace;
    font-size: 14px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink-muted);
    text-decoration: none;
  }
  .nav-links { display: flex; gap: 32px; }
  .nav-links a {
    font-family: 'DM Mono', monospace;
    font-size: 14px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink-muted);
    text-decoration: none;
  }
  .nav-links a:hover { color: var(--accent-warm); }
  .nav-links a.active { color: var(--accent); }

  .page-header-section { border-bottom: 1px solid var(--rule); }
  .page-header-inner { padding: 80px 0 64px; }
  .page-label { font-family: 'DM Mono', monospace; font-size: 13px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-muted); margin-bottom: 14px; }
  .page-title { font-family: 'DM Serif Display', serif; font-size: 52px; line-height: 1.05; color: var(--ink); letter-spacing: -0.02em; }
  .page-title em { font-style: italic; color: var(--accent); }

  .project-section { border-bottom: 1px solid var(--rule); padding: 80px 0; }
  .project-section:last-child { border-bottom: none; }
  
  .project-content { max-width: 960px; }

  .project-eyebrow { font-family: 'DM Mono', monospace; font-size: 13px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent-warm); margin-bottom: 12px; }
  .project-title { font-family: 'DM Serif Display', serif; font-size: 38px; line-height: 1.1; color: var(--ink); margin-bottom: 10px; letter-spacing: -0.01em; }
  .project-stack { font-family: 'DM Mono', monospace; font-size: 14px; color: var(--ink-muted); margin-bottom: 28px; letter-spacing: 0.03em; }
  .project-overview { font-size: 18px; line-height: 1.7; color: var(--ink-mid); margin-bottom: 40px; border-left: 3px solid var(--accent-warm); padding-left: 20px; }

  .sub-label { font-family: 'DM Mono', monospace; font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); margin-bottom: 16px; display: flex; align-items: center; gap: 14px; }
  .sub-label::after { content: ''; flex: 1; height: 1px; background: var(--rule); }

  .steps { margin-bottom: 40px; }
  .step { display: flex; gap: 20px; margin-bottom: 14px; align-items: flex-start; }
  .step-num { font-family: 'DM Mono', monospace; font-size: 13px; color: var(--accent-warm); background: #f0ece2; border: 1px solid var(--rule); width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 2px; }
  .step-text { font-size: 17px; color: var(--ink-mid); line-height: 1.55; }
  code { font-family: 'DM Mono', monospace; font-size: 15px; background: #e8e4da; padding: 2px 6px; border-radius: 3px; }

  .defs { margin-bottom: 40px; }
  .def-item { margin-bottom: 14px; display: flex; gap: 16px; }
  .def-num { font-family: 'DM Mono', monospace; font-size: 13px; color: var(--ink-muted); flex-shrink: 0; padding-top: 3px; }
  .def-text { font-size: 17px; color: var(--ink-mid); line-height: 1.55; }

  .limitations { margin-bottom: 40px; }
  .limitations ul { list-style: none; padding: 0; }
  .limitations ul li { font-size: 16px; color: var(--ink-muted); padding-left: 20px; position: relative; margin-bottom: 8px; line-height: 1.6; }
  .limitations ul li::before { content: '—'; position: absolute; left: 0; color: var(--rule); }
  .limitation-note { margin-top: 14px; font-size: 16px; font-style: italic; color: var(--accent); padding-left: 20px; }

  .queries { margin-bottom: 40px; }
  .queries ol { list-style: none; padding: 0; counter-reset: q; }
  .queries ol li { counter-increment: q; font-size: 17px; color: var(--ink-mid); padding-left: 36px; position: relative; margin-bottom: 10px; line-height: 1.55; }
  .queries ol li::before { content: counter(q, decimal-leading-zero); position: absolute; left: 0; font-family: 'DM Mono', monospace; font-size: 13px; color: var(--accent-warm); top: 3px; }

  .run-block { background: var(--accent); border-radius: 6px; padding: 28px 32px; margin-bottom: 40px; }
  .run-block .sub-label { color: #9ab8a8; }
  .run-block .sub-label::after { background: #2d5c46; }
  .run-step { display: flex; gap: 16px; margin-bottom: 12px; align-items: flex-start; }
  .run-num { font-family: 'DM Mono', monospace; font-size: 13px; color: #9ab8a8; flex-shrink: 0; padding-top: 3px; }
  .run-text { font-size: 16px; color: #d4e8dd; line-height: 1.55; font-family: 'DM Mono', monospace; }
  .run-text code { background: rgba(255,255,255,0.08); padding: 2px 8px; border-radius: 3px; color: #c8f0d8; }

  .two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 40px; }
  .info-block { background: var(--card); border: 1px solid var(--rule); border-radius: 6px; padding: 20px 24px; }
  .info-block-title { font-family: 'DM Mono', monospace; font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-muted); margin-bottom: 14px; }
  .info-block p { font-size: 16px; color: var(--ink-mid); margin-bottom: 10px; line-height: 1.5; }
  .info-block ul { list-style: none; padding: 0; }
  .info-block ul li { font-size: 16px; color: var(--ink-mid); padding-left: 18px; position: relative; margin-bottom: 8px; line-height: 1.5; }
  .info-block ul li::before { content: '—'; position: absolute; left: 0; color: var(--rule); }
  .info-block a { font-size: 15px; color: var(--accent); text-decoration: none; font-family: 'DM Mono', monospace; word-break: break-all; }
  .info-block a:hover { color: var(--accent-warm); }

  .findings-wrap { margin-bottom: 40px; }
  .findings-table { width: 100%; border-collapse: collapse; font-size: 16px; }
  .findings-table thead tr { border-bottom: 2px solid var(--accent); }
  .findings-table th { font-family: 'DM Mono', monospace; font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-muted); padding: 12px 16px; text-align: left; font-weight: 500; }
  .findings-table td { padding: 14px 16px; color: var(--ink-mid); border-bottom: 1px solid var(--rule); }
  .findings-table tr:last-child td { border-bottom: none; }
  .drop-rate { font-family: 'DM Mono', monospace; font-weight: 500; color: var(--accent-warm); }
  .bar-cell { width: 200px; }
  .bar-bg { background: #e5e0d4; border-radius: 2px; height: 8px; width: 100%; }
  .bar-fill { background: var(--accent-warm); border-radius: 2px; height: 8px; }
  .findings-note { font-size: 15px; color: var(--ink-muted); margin-top: 14px; font-style: italic; }

  .iphone-wrap {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    margin-bottom: 48px;
  }
  .iphone-shell {
    width: 224px;
    height: 460px;
    background: #161616;
    border-radius: 46px;
    border: 7px solid #252525;
    box-shadow:
      0 0 0 1px #0a0a0a,
      0 28px 64px rgba(0,0,0,0.32),
      inset 0 0 0 1px #333;
    position: relative;
    flex-shrink: 0;
    overflow: hidden;
  }

  .iphone-island {
    position: absolute;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    width: 90px;
    height: 26px;
    background: #0a0a0a;
    border-radius: 20px;
    z-index: 3;
  }
  .iphone-screen {
    width: 100%;
    height: 100%;
    border-radius: 40px;
    background: #0d0d0d;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
  }
  .iphone-screen video,
  .iphone-screen img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  .iphone-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 60px 24px 40px;
    text-align: center;
    height: 100%;
  }
  .iphone-placeholder-icon {
    width: 44px;
    height: 44px;
    border: 1.5px dashed #333;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .iphone-placeholder-label {
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: #333;
    line-height: 1.8;
  }
  .iphone-caption {
    font-family: 'DM Mono', monospace;
    font-size: 11px;
    color: var(--ink-muted);
    letter-spacing: 0.08em;
    margin-top: 16px;
    opacity: 0.7;
  }

  .feature-list { margin-bottom: 40px; }
  .feature-list ul { list-style: none; padding: 0; }
  .feature-list ul li { font-size: 17px; color: var(--ink-mid); padding-left: 20px; position: relative; margin-bottom: 10px; line-height: 1.55; }
  .feature-list ul li::before { content: '—'; position: absolute; left: 0; color: var(--accent-warm); }

  .footer-section { border-top: 1px solid var(--rule); }
  .footer-inner { padding: 32px 0; display: flex; justify-content: space-between; align-items: center; }
  .footer-copy { font-family: 'DM Mono', monospace; font-size: 13px; color: var(--ink-muted); letter-spacing: 0.06em; }
  .footer-links { display: flex; gap: 24px; }
  .footer-links a { font-family: 'DM Mono', monospace; font-size: 13px; color: var(--ink-muted); text-decoration: none; letter-spacing: 0.06em; }
  .footer-links a:hover { color: var(--accent-warm); }

  html, body { min-height: 100vh; }

  .hero-section { border-bottom: 1px solid var(--rule); overflow: hidden; }
  .hero-inner { padding: 100px 0 90px; }
  
  .hero-num {
    font-family: 'DM Serif Display', serif;
    font-size: 320px;
    line-height: 0.85;
    color: transparent;
    -webkit-text-stroke: 1px var(--rule);
    position: absolute;
    right: 50px;
    top: 24px;
    pointer-events: none;
    user-select: none;
    letter-spacing: -0.04em;
  }
  .hero-label {
    font-family: 'DM Mono', monospace;
    font-size: 13px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--ink-muted);
    margin-bottom: 28px;
    display: flex;
    align-items: center;
    gap: 14px;
  }
  .hero-label::before { content: ''; width: 40px; height: 1px; background: var(--accent-warm); }
  .hero-name {
    font-family: 'DM Serif Display', serif;
    font-size: 120px;
    line-height: 0.95;
    color: var(--ink);
    letter-spacing: -0.03em;
    margin-bottom: 10px;
    position: relative;
    z-index: 1;
  }
  .hero-name em { font-style: italic; color: var(--accent); display: block; }
  .hero-tagline {
    font-size: 19px;
    line-height: 1.6;
    color: var(--ink-mid);
    max-width: 600px;
    margin-top: 32px;
    margin-bottom: 44px;
    position: relative;
    z-index: 1;
  }
  .hero-tagline strong { color: var(--ink); font-weight: 600; }
  .hero-actions { display: flex; gap: 16px; position: relative; z-index: 1; }
  
  .btn-primary {
    font-family: 'DM Mono', monospace;
    font-size: 14px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--bg);
    background: var(--accent);
    padding: 14px 28px;
    text-decoration: none;
    border-radius: 2px;
  }
  .btn-primary:hover { background: #0f2219; }
  .btn-secondary {
    font-family: 'DM Mono', monospace;
    font-size: 14px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink-mid);
    background: transparent;
    padding: 14px 28px;
    text-decoration: none;
    border: 1px solid var(--rule);
    border-radius: 2px;
  }
  .btn-secondary:hover { border-color: var(--ink-muted); color: var(--ink); }

  .stats-section { border-bottom: 1px solid var(--rule); }
  .stats-inner { display: grid; grid-template-columns: repeat(3, 1fr); }
  .stat { padding: 36px 40px; border-right: 1px solid var(--rule); }
  .stat:first-child { padding-left: 0; }
  .stat:last-child { border-right: none; padding-right: 0; }
  .stat-num { font-family: 'DM Serif Display', serif; font-size: 50px; color: var(--ink); letter-spacing: -0.02em; line-height: 1; margin-bottom: 6px; }
  .stat-num em { font-style: italic; color: var(--accent-warm); }
  .stat-label { font-family: 'DM Mono', monospace; font-size: 13px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-muted); }

  .section-header { display: flex; align-items: baseline; justify-content: space-between; padding: 48px 0 28px; }
  .section-header-label { font-family: 'DM Mono', monospace; font-size: 13px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); display: flex; align-items: center; gap: 12px; }
  .section-header-label::after { content: ''; width: 48px; height: 1px; background: var(--rule); }
  .section-header-link { font-family: 'DM Mono', monospace; font-size: 13px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-muted); text-decoration: none; }
  .section-header-link:hover { color: var(--accent-warm); }

  .projects-section { border-top: 1px solid var(--rule); }
  .project-teasers { display: grid; grid-template-columns: 1fr 1fr; }
  
  .teaser { padding: 40px 40px 48px; border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule); position: relative; text-decoration: none; display: block; }
  .teaser:nth-child(odd) { padding-left: 0; }
  .teaser:nth-child(even) { border-right: none; padding-right: 0; }
  .teaser:hover { background: var(--card); }
  
  .teaser-num { font-family: 'DM Mono', monospace; font-size: 13px; color: var(--accent-warm); letter-spacing: 0.1em; margin-bottom: 14px; }
  .teaser-title { font-family: 'DM Serif Display', serif; font-size: 28px; color: var(--ink); line-height: 1.15; margin-bottom: 12px; letter-spacing: -0.01em; }
  .teaser-desc { font-size: 16px; color: var(--ink-muted); line-height: 1.6; margin-bottom: 20px; }
  .teaser-stack { font-family: 'DM Mono', monospace; font-size: 12px; color: var(--ink-muted); letter-spacing: 0.04em; }
  
  .teaser-arrow { position: absolute; bottom: 40px; right: 40px; font-family: 'DM Mono', monospace; font-size: 22px; color: var(--rule); }
  .teaser:nth-child(even) .teaser-arrow { right: 0; }
  .teaser:hover .teaser-arrow { color: var(--accent-warm); }

  /* ── WALKTHROUGH PAGE ── */

  html { scroll-behavior: smooth; }

  .wt-page-header { border-bottom: 1px solid var(--rule); padding: 80px 0 64px; }
  .wt-page-title { font-family: 'DM Serif Display', serif; font-size: 52px; line-height: 1.05; color: var(--ink); letter-spacing: -0.02em; margin-bottom: 16px; }
  .wt-page-title em { font-style: italic; color: var(--accent); }
  .wt-page-subtitle { font-size: 18px; line-height: 1.65; color: var(--ink-mid); max-width: 560px; }

  .wt-jump-nav { padding: 24px 0; border-bottom: 1px solid var(--rule); }
  .wt-jump-nav-inner { display: flex; gap: 8px; flex-wrap: wrap; }
  .wt-jump-link {
    font-family: 'DM Mono', monospace;
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--ink-muted);
    border: 1px solid var(--rule);
    padding: 6px 14px;
    border-radius: 2px;
    text-decoration: none;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
  }
  .wt-jump-link:hover {
    background: var(--accent);
    color: var(--bg);
    border-color: var(--accent);
  }

  .wt-section { padding: 80px 0; border-bottom: 1px solid var(--rule); }
  .wt-section:last-of-type { border-bottom: none; }

  .wt-eyebrow {
    font-family: 'DM Mono', monospace;
    font-size: 13px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent-warm);
    margin-bottom: 12px;
  }
  .wt-title {
    font-family: 'DM Serif Display', serif;
    font-size: 38px;
    line-height: 1.1;
    color: var(--ink);
    letter-spacing: -0.01em;
    margin-bottom: 8px;
  }
  .wt-title em { font-style: italic; color: var(--accent); }
  .wt-stack {
    font-family: 'DM Mono', monospace;
    font-size: 13px;
    color: var(--ink-muted);
    letter-spacing: 0.04em;
    margin-bottom: 24px;
  }
  .wt-intro {
    font-size: 18px;
    line-height: 1.7;
    color: var(--ink-mid);
    max-width: 680px;
    margin-bottom: 56px;
    border-left: 3px solid var(--accent-warm);
    padding-left: 20px;
  }

  .shot-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
    margin-bottom: 64px;
  }
  .shot-block.reverse { direction: rtl; }
  .shot-block.reverse > * { direction: ltr; }
  .shot-block.full { grid-template-columns: 1fr; }
  .shot-block.full .shot-text { max-width: 680px; }

  .shot-frame {
    background: #1e1e1a;
    border-radius: 4px;
    overflow: hidden;
    aspect-ratio: 16 / 10;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    position: relative;
    border: 1px solid #2e2e28;
  }
  .shot-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top left;
    display: block;
  }

  .shot-placeholder-num {
    font-family: 'DM Serif Display', serif;
    font-size: 52px;
    color: #2e2e28;
    font-style: italic;
    line-height: 1;
  }
  .shot-placeholder-label {
    font-family: 'DM Mono', monospace;
    font-size: 11px;
    letter-spacing: 0.08em;
    color: #3a3a34;
  }
  .shot-placeholder-hint {
    position: absolute;
    bottom: 10px;
    left: 0; right: 0;
    text-align: center;
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    color: #2e2e28;
    letter-spacing: 0.06em;
  }

  .shot-label {
    font-family: 'DM Mono', monospace;
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent-warm);
    margin-bottom: 10px;
  }
  .shot-heading {
    font-family: 'DM Serif Display', serif;
    font-size: 24px;
    font-weight: 400;
    line-height: 1.2;
    color: var(--ink);
    margin-bottom: 14px;
  }
  .shot-heading em { font-style: italic; color: var(--accent); }
  .shot-body {
    font-size: 16px;
    color: var(--ink-mid);
    line-height: 1.65;
  }
  .shot-body + .shot-body { margin-top: 12px; }

  .shot-stat {
    margin-top: 24px;
    padding: 16px 20px;
    background: var(--card);
    border: 1px solid var(--rule);
    border-left: 3px solid var(--accent);
    border-radius: 0 4px 4px 0;
    font-family: 'DM Mono', monospace;
    font-size: 13px;
    color: var(--ink-muted);
    letter-spacing: 0.02em;
  }
  .shot-stat strong {
    display: block;
    font-family: 'DM Serif Display', serif;
    font-size: 28px;
    font-style: italic;
    color: var(--accent-warm);
    margin-bottom: 4px;
    font-weight: 400;
  }

  .wt-back {
    margin-top: 56px;
    padding-top: 32px;
    /* border-top: 1px solid var(--rule); */
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  .wt-back a {
    font-family: 'DM Mono', monospace;
    font-size: 13px;
    letter-spacing: 0.06em;
    color: var(--ink-muted);
    text-decoration: none;
    text-transform: uppercase;
  }
  .wt-back a:hover { color: var(--accent-warm); }

  /* ── RESPONSIVE ── */
  @media (max-width: 768px) {
    .container { padding: 0 24px; }
    .page-header-inner { padding: 60px 0 40px; }
    .page-title { font-size: 40px; }
    .project-title { font-size: 32px; }
    .project-overview { font-size: 16px; }
    .two-col { grid-template-columns: 1fr; gap: 16px; }
    .findings-wrap { overflow-x: auto; padding-bottom: 8px; }
    .findings-table { min-width: 550px; }
    .iphone-wrap { align-items: center; }
    .iphone-caption { text-align: center; }
    .nav-inner { flex-direction: column; gap: 16px; padding: 20px 0; }
    .footer-inner { flex-direction: column; gap: 16px; align-items: flex-start; }
    .hero-num { display: none; }
    .hero-name { font-size: 58px; }
    .hero-inner { padding: 60px 0 50px; }
    .hero-tagline { font-size: 16px; margin-top: 20px; margin-bottom: 32px; }
    .hero-actions { flex-direction: column; }
    .hero-section { overflow: hidden; position: relative; }
    .btn-primary, .btn-secondary { text-align: center; }
    .stats-inner { grid-template-columns: 1fr; }
    .stat { border-right: none; border-bottom: 1px solid var(--rule); padding: 24px 0; }
    .stat:last-child { border-bottom: none; }
    .project-teasers { grid-template-columns: 1fr; }
    .teaser { padding: 32px 0; border-right: none; }
    .teaser-arrow { right: 0; }

    /* walkthrough responsive */
    .wt-page-title { font-size: 40px; }
    .wt-title { font-size: 28px; }
    .wt-intro { font-size: 16px; }
    .shot-block,
    .shot-block.reverse { grid-template-columns: 1fr; direction: ltr; }
    .shot-block.reverse > * { direction: ltr; }
    .wt-back { flex-direction: column; gap: 16px; align-items: flex-start; }
  }