/* ============ TOKENS ============ */
  :root {
    --font-display: "Archivo", system-ui, sans-serif;
    --font-serif: "Newsreader", Georgia, serif;
    --font-mono: "JetBrains Mono", ui-monospace, monospace;
    --max: 1240px;
    --pad: clamp(20px, 5vw, 72px);
    --ease: cubic-bezier(0.22, 1, 0.36, 1);
  }
  html[data-theme="light"] {
    --bg: #f4f1ea;
    --paper: #fbfaf6;
    --ink: #16130d;
    --muted: #5c554a;
    --faint: #938b7d;
    --line: #16130d;
    --hair: rgba(22,19,13,0.16);
    --accent: #cc3b1d;
    --accent-2: #1a3a2e;
  }
  html[data-theme="dark"] {
    --bg: #14120d;
    --paper: #1b1811;
    --ink: #f4f1ea;
    --muted: #b6ad9d;
    --faint: #837b6c;
    --line: #f4f1ea;
    --hair: rgba(244,241,234,0.18);
    --accent: #f2653c;
    --accent-2: #6fcaa6;
  }

  * { margin: 0; padding: 0; box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    font-family: var(--font-display);
    background: var(--bg);
    color: var(--ink);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    transition: background 0.5s var(--ease), color 0.5s var(--ease);
  }
  ::selection { background: var(--accent); color: var(--paper); }
  a { color: inherit; text-decoration: none; }
  img { max-width: 100%; display: block; }

  .wrap { max-width: var(--max); margin: 0 auto; padding-inline: var(--pad); }
  .mono { font-family: var(--font-mono); }

  /* ============ NAV ============ */
  header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 50;
    background: color-mix(in srgb, var(--bg) 88%, transparent);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid transparent;
    transition: border-color 0.4s;
  }
  header.scrolled { border-bottom: 1px solid var(--line); }
  nav { display: flex; align-items: center; justify-content: space-between; height: 68px; }
  .brand { font-family: var(--font-display); font-weight: 800; font-size: 1.05rem; letter-spacing: -0.02em; text-transform: uppercase; }
  .nav-links { display: flex; align-items: center; gap: 2px; }
  .nav-links a {
    font-family: var(--font-mono); font-size: 0.76rem; color: var(--muted);
    padding: 8px 12px; position: relative; transition: color 0.2s;
  }
  .nav-links a:hover { color: var(--accent); }
  .nav-tools { display: flex; align-items: center; gap: 10px; }
  .toggle {
    width: 40px; height: 40px; border: 1px solid var(--line); background: transparent; color: var(--ink);
    cursor: pointer; display: grid; place-items: center; transition: background 0.2s, color 0.2s;
  }
  .toggle:hover { background: var(--ink); color: var(--paper); }
  .toggle svg { width: 17px; height: 17px; }
  .toggle .moon { display: none; }
  html[data-theme="dark"] .toggle .moon { display: block; }
  html[data-theme="dark"] .toggle .sun { display: none; }
  .menu-btn { display: none; }

  /* ============ HERO ============ */
  .hero { padding-top: clamp(120px, 16vh, 180px); padding-bottom: clamp(40px, 7vh, 80px); }
  .hero-meta {
    display: flex; justify-content: space-between; align-items: baseline; flex-wrap: wrap; gap: 12px;
    font-family: var(--font-mono); font-size: 0.76rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em;
    padding-bottom: 18px; border-bottom: 1px solid var(--line); margin-bottom: 40px;
  }
  .hero-meta .pulse { color: var(--accent); }
  h1.title {
    font-family: var(--font-display); font-weight: 900;
    font-size: clamp(3rem, 12vw, 9.5rem); line-height: 0.86; letter-spacing: -0.045em;
    text-transform: uppercase;
  }
  h1.title .accent { color: var(--accent); font-family: var(--font-serif); font-weight: 500; font-style: italic; text-transform: none; letter-spacing: -0.01em; }
  .hero-bottom { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin-top: 48px; align-items: end; }
  .hero-sub { font-family: var(--font-serif); font-size: clamp(1.2rem, 2.2vw, 1.6rem); color: var(--muted); line-height: 1.45; max-width: 560px; }
  .hero-cta { display: flex; flex-wrap: wrap; gap: 12px; justify-content: flex-end; }
  .btn {
    font-family: var(--font-mono); font-size: 0.8rem; font-weight: 500; letter-spacing: 0.02em;
    padding: 14px 22px; cursor: pointer; border: 1px solid var(--line);
    transition: background 0.25s var(--ease), color 0.25s, transform 0.25s var(--ease);
    display: inline-flex; align-items: center; gap: 9px; text-transform: uppercase; background: transparent; color: var(--ink);
  }
  .btn svg { width: 15px; height: 15px; }
  .btn-primary { background: var(--ink); color: var(--paper); }
  .btn-primary:hover { background: var(--accent); border-color: var(--accent); transform: translate(-2px,-2px); box-shadow: 4px 4px 0 var(--line); }
  .btn-ghost:hover { background: var(--ink); color: var(--paper); transform: translate(-2px,-2px); box-shadow: 4px 4px 0 var(--accent); }
  .btn-sm { padding: 10px 16px; font-size: 0.72rem; }

  .marquee {
    margin-top: clamp(44px, 7vh, 72px); border-block: 1px solid var(--line); padding-block: 14px;
    overflow: hidden; position: relative; --gap: 36px;
  }
  .marquee-track { display: flex; gap: var(--gap); width: max-content; animation: scroll 46s linear infinite; }
  .marquee:hover .marquee-track { animation-play-state: paused; }
  .marquee-track span {
    font-family: var(--font-display); font-weight: 700; font-size: 0.92rem; color: var(--ink); text-transform: uppercase; letter-spacing: 0.02em;
    display: inline-flex; align-items: center; gap: var(--gap); white-space: nowrap;
  }
  .marquee-track span::after { content: "✦"; color: var(--accent); font-size: 0.7rem; }
  @keyframes scroll { to { transform: translateX(calc(-50% - var(--gap)/2)); } }

  /* ============ SECTION SCAFFOLD ============ */
  section { padding-block: clamp(60px, 9vh, 110px); position: relative; }
  .sec-head { margin-bottom: clamp(36px, 5vh, 56px); }
  .sec-head-row { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; flex-wrap: wrap; margin-bottom: clamp(32px, 4.5vh, 50px); }
  .sec-head-row .sec-head { margin-bottom: 0; }
  .sec-tag { font-family: var(--font-mono); font-size: 0.76rem; color: var(--accent); display: block; margin-bottom: 14px; letter-spacing: 0.06em; }
  .sec-title {
    font-family: var(--font-display); font-weight: 800; text-transform: uppercase;
    font-size: clamp(1.9rem, 5vw, 3.4rem); line-height: 0.98; letter-spacing: -0.03em; max-width: 900px;
  }
  .sec-desc { margin-top: 20px; color: var(--muted); font-size: 1.1rem; font-family: var(--font-serif); max-width: 620px; }

  /* ============ ABOUT ============ */
  .about-grid { display: grid; grid-template-columns: 1.4fr 0.85fr; gap: clamp(30px, 5vw, 72px); align-items: start; border-top: 1px solid var(--line); padding-top: 40px; }
  .about-body p { color: var(--ink); font-family: var(--font-serif); font-size: 1.25rem; line-height: 1.5; margin-bottom: 22px; }
  .about-body p strong { font-weight: 600; font-style: italic; color: var(--accent); }
  .about-card { border: 1px solid var(--line); padding: 0; }
  .about-card h3 { font-family: var(--font-mono); font-size: 0.72rem; color: var(--paper); background: var(--ink); text-transform: uppercase; letter-spacing: 0.1em; padding: 12px 22px; }
  .fact { display: flex; justify-content: space-between; gap: 16px; padding: 13px 22px; border-top: 1px solid var(--hair); }
  .fact .k { color: var(--muted); font-size: 0.92rem; font-family: var(--font-mono); }
  .fact .v { font-family: var(--font-display); font-weight: 600; font-size: 0.92rem; text-align: right; }
  .fact .v.ok { color: var(--accent); }

  /* ============ EXPERIENCE ============ */
  .exp-list { border-top: 1px solid var(--line); }
  .exp-row {
    display: grid; grid-template-columns: 130px 1fr auto; gap: 28px; align-items: baseline;
    padding: 26px 0; border-bottom: 1px solid var(--hair); position: relative;
    transition: padding-left 0.35s var(--ease);
  }
  .exp-row::before { content: ""; position: absolute; left: -20px; top: 0; bottom: -1px; width: 3px; background: var(--accent); transform: scaleY(0); transform-origin: top; transition: transform 0.35s var(--ease); }
  .exp-row:hover { padding-left: 14px; }
  .exp-row:hover::before { transform: scaleY(1); }
  .exp-row.now .exp-when { color: var(--accent); }
  .exp-when { font-family: var(--font-mono); font-size: 0.82rem; color: var(--faint); }
  .exp-role { font-family: var(--font-display); font-size: 1.4rem; font-weight: 700; letter-spacing: -0.02em; }
  .exp-co { color: var(--accent); }
  .exp-p { grid-column: 2 / 3; color: var(--muted); font-family: var(--font-serif); font-size: 1.06rem; margin-top: 8px; max-width: 640px; }
  .exp-idx { font-family: var(--font-mono); font-size: 0.8rem; color: var(--faint); }

  .edu-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0; margin-top: 16px; border: 1px solid var(--line); }
  .edu-card { padding: 26px; border-right: 1px solid var(--hair); border-bottom: 1px solid var(--hair); transition: background 0.3s; }
  .edu-card:hover { background: var(--paper); }
  .edu-card:nth-child(2n) { border-right: none; }
  .edu-when { font-family: var(--font-mono); font-size: 0.74rem; color: var(--accent); letter-spacing: 0.02em; }
  .edu-card h4 { font-family: var(--font-display); font-size: 1.1rem; font-weight: 700; margin: 10px 0 4px; letter-spacing: -0.01em; }
  .edu-card .where { color: var(--muted); font-size: 0.96rem; font-family: var(--font-serif); }
  .edu-card .note { color: var(--faint); font-size: 0.84rem; margin-top: 10px; font-family: var(--font-mono); }
  .creds { display: flex; flex-wrap: wrap; gap: 0; margin-top: 26px; border: 1px solid var(--line); }
  .cred { font-family: var(--font-mono); font-size: 0.76rem; color: var(--ink); padding: 11px 18px; border-right: 1px solid var(--hair); }
  .cred::before { content: "→ "; color: var(--accent); }
  .sub-label { font-family: var(--font-mono); font-size: 0.76rem; color: var(--accent); text-transform: uppercase; letter-spacing: 0.1em; margin: 52px 0 6px; }

  /* ============ SKILLS ============ */
  .skills-list { border-top: 1px solid var(--line); }
  .skill-row {
    display: grid; grid-template-columns: 46px 240px 1fr; gap: 24px; align-items: start;
    padding: 26px 0; border-bottom: 1px solid var(--hair); transition: background 0.3s;
  }
  .skill-row:hover { background: var(--paper); }
  .skill-row .idx { font-family: var(--font-mono); font-size: 0.82rem; color: var(--faint); }
  .skill-row h4 { font-family: var(--font-display); font-size: 1.35rem; font-weight: 700; letter-spacing: -0.02em; text-transform: uppercase; }
  .chips { display: flex; flex-wrap: wrap; gap: 8px; }
  .chip {
    font-family: var(--font-mono); font-size: 0.76rem; color: var(--muted);
    border: 1px solid var(--hair); padding: 5px 11px; transition: border-color 0.2s, color 0.2s, background 0.2s;
  }
  .chip:hover { border-color: var(--accent); color: var(--paper); background: var(--accent); }

  /* ============ PROJECTS ============ */
  .proj-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border: 1px solid var(--line); }
  .proj {
    padding: 26px; border-right: 1px solid var(--hair); border-bottom: 1px solid var(--hair);
    min-height: 200px; display: flex; flex-direction: column; position: relative; transition: background 0.3s;
  }
  .proj:hover { background: var(--paper); }
  .proj-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
  .proj .tag { font-family: var(--font-mono); font-size: 0.7rem; color: var(--accent); text-transform: uppercase; letter-spacing: 0.04em; }
  .proj .status { font-family: var(--font-mono); font-size: 0.68rem; color: var(--faint); display: inline-flex; align-items: center; gap: 6px; text-transform: uppercase; }
  .proj .status .d { width: 6px; height: 6px; border-radius: 50%; background: var(--faint); }
  .proj .status.live .d { background: var(--accent-2); }
  .proj .status.live { color: var(--accent-2); }
  .proj h4 { font-family: var(--font-display); font-size: 1.3rem; font-weight: 700; letter-spacing: -0.02em; margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
  .proj h4 .ext { width: 15px; height: 15px; color: var(--faint); opacity: 0; transform: translate(-3px,3px); transition: opacity 0.3s, transform 0.3s var(--ease), color 0.3s; }
  .proj.linked:hover h4 .ext { opacity: 1; transform: none; color: var(--accent); }
  .proj.linked { cursor: pointer; }
  .proj p { color: var(--muted); font-family: var(--font-serif); font-size: 1rem; line-height: 1.45; margin-bottom: auto; }
  .proj .stack { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; }
  .proj .stack span { font-family: var(--font-mono); font-size: 0.68rem; color: var(--faint); }
  .proj .stack span:not(:last-child)::after { content: "·"; margin-left: 6px; }

  /* ============ ART CTA ============ */
  .art-cta { border: 1px solid var(--line); padding: clamp(30px, 5vw, 56px); display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; background: var(--ink); color: var(--paper); }
  .art-cta h3 { font-family: var(--font-display); font-size: clamp(1.6rem, 3.4vw, 2.5rem); font-weight: 800; text-transform: uppercase; letter-spacing: -0.02em; }
  .art-cta p { color: color-mix(in srgb, var(--paper) 70%, transparent); margin-top: 10px; max-width: 460px; font-family: var(--font-serif); font-size: 1.1rem; }
  .art-cta .btn-primary { background: var(--accent); color: var(--paper); border-color: var(--accent); }
  .art-cta .btn-primary:hover { background: var(--paper); color: var(--ink); border-color: var(--paper); box-shadow: 4px 4px 0 var(--accent); }

  /* ============ CONTACT ============ */
  .contact-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(30px, 5vw, 64px); align-items: start; border-top: 1px solid var(--line); padding-top: 40px; }
  .contact-links { display: flex; flex-direction: column; }
  .clink { display: flex; align-items: center; gap: 16px; padding: 20px 0; border-bottom: 1px solid var(--hair); transition: padding-left 0.3s var(--ease); }
  .clink:first-child { border-top: 1px solid var(--hair); }
  .clink:hover { padding-left: 10px; }
  .clink svg { width: 20px; height: 20px; color: var(--accent); flex-shrink: 0; }
  .clink .ct-k { font-family: var(--font-mono); font-size: 0.7rem; color: var(--faint); text-transform: uppercase; letter-spacing: 0.08em; }
  .clink .ct-v { font-size: 1.05rem; font-weight: 600; }
  .clink .arr { margin-left: auto; color: var(--faint); transition: transform 0.3s var(--ease), color 0.3s; }
  .clink:hover .arr { transform: translate(4px,-4px); color: var(--accent); }

  form { border: 1px solid var(--line); padding: 32px; }
  .field { margin-bottom: 18px; }
  .field label { display: block; font-family: var(--font-mono); font-size: 0.72rem; color: var(--muted); margin-bottom: 8px; text-transform: uppercase; letter-spacing: 0.06em; }
  .field input, .field textarea {
    width: 100%; background: transparent; border: 1px solid var(--line); padding: 13px 15px;
    color: var(--ink); font-family: var(--font-display); font-size: 0.98rem; transition: border-color 0.25s, box-shadow 0.25s;
  }
  .field input:focus, .field textarea:focus { outline: none; border-color: var(--accent); box-shadow: 3px 3px 0 var(--accent); }
  .field textarea { resize: vertical; min-height: 110px; }
  .form-msg { font-family: var(--font-mono); font-size: 0.8rem; color: var(--accent); margin-top: 14px; min-height: 20px; opacity: 0; transition: opacity 0.3s; }
  .form-msg.show { opacity: 1; }

  /* ============ FOOTER ============ */
  footer { border-top: 1px solid var(--line); padding-block: 34px; }
  .foot { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
  .foot .mono { font-size: 0.76rem; color: var(--faint); font-family: var(--font-mono); }
  .dev-credit { font-family: var(--font-mono); font-size: 0.76rem; color: var(--faint); }
  .dev-credit a { color: var(--accent); font-weight: 600; }
  .dev-credit a:hover { text-decoration: underline; }
  .to-top { font-family: var(--font-mono); font-size: 0.76rem; color: var(--muted); display: inline-flex; gap: 8px; align-items: center; cursor: pointer; transition: color 0.25s; text-transform: uppercase; }
  .to-top:hover { color: var(--accent); }

  /* ============ REVEAL ============ */
  .reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
  .reveal.in { opacity: 1; transform: none; }
  .reveal.d1 { transition-delay: 0.07s; }
  .reveal.d2 { transition-delay: 0.14s; }
  .reveal.d3 { transition-delay: 0.21s; }
  @media (prefers-reduced-motion: reduce) {
    .reveal { opacity: 1; transform: none; transition: none; }
    .marquee-track { animation: none; }
    html { scroll-behavior: auto; }
  }

  /* ============ RESPONSIVE ============ */
  @media (max-width: 900px) {
    .about-grid, .contact-grid, .hero-bottom { grid-template-columns: 1fr; }
    .hero-cta { justify-content: flex-start; }
    .edu-grid, .proj-grid { grid-template-columns: 1fr; }
    .edu-card, .proj { border-right: none; }
    .exp-row { grid-template-columns: 100px 1fr; }
    .exp-row .exp-idx { display: none; }
    .exp-p { grid-column: 1 / -1; }
    .skill-row { grid-template-columns: 1fr; gap: 12px; }
    .nav-links { display: none; position: absolute; top: 68px; left: 0; right: 0;
      flex-direction: column; align-items: stretch; gap: 0; padding: 8px var(--pad) 18px;
      background: var(--bg); border-bottom: 1px solid var(--line); }
    .nav-links.open { display: flex; }
    .nav-links a { padding: 12px 0; font-size: 0.9rem; border-bottom: 1px solid var(--hair); }
    .menu-btn { display: grid; }
  }