:root {
    --bg: #ffffff;
    --bg-soft: #f1f1f4;
    --bg-elevated: #f7f7f7;
    --bg-elevated-2: #ededed;
    --ink: #0f1115;
    --ink-soft: #2a2e36;
    --muted: #6b7280;
    --line: #ececec;
    --line-strong: #d6d6d6;
    --accent: #1591d6;
    --accent-soft: #e9f4fb;
    --highlight: #b9a7ff;
    --highlight-soft: #f3efff;
    --chip-bg: #f6f6f7;
    --tile-bg: #ffffff;
    --tile-border: rgba(15, 17, 21, 0.08);
    --shadow-card: rgba(15, 17, 21, 0.05);
    --shadow-card-strong: rgba(15, 17, 21, 0.08);
    color-scheme: light;
  }
  [data-theme="dark"] {
    --bg: #0f1115;
    --bg-soft: #1c1c1e;
    --bg-elevated: #1f2126;
    --bg-elevated-2: #16181c;
    --ink: #f5f6f8;
    --ink-soft: #d0d2d8;
    --muted: #9ca0aa;
    --line: rgba(255, 255, 255, 0.08);
    --line-strong: rgba(255, 255, 255, 0.18);
    --accent: #58a6ff;
    --accent-soft: rgba(88, 166, 255, 0.14);
    --highlight: #b9a7ff;
    --highlight-soft: rgba(185, 167, 255, 0.12);
    --chip-bg: #1c1e23;
    --tile-bg: #23272F;
    --tile-border: transparent;
    --shadow-card: rgba(0, 0, 0, 0.4);
    --shadow-card-strong: rgba(0, 0, 0, 0.55);
    color-scheme: dark;
  }
  html { transition: background 220ms ease, color 220ms ease; }
  body { transition: background 220ms ease, color 220ms ease; }

  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: 'Inter', 'Pretendard Variable', 'Pretendard', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 15px;
    line-height: 1.6;
    word-break: keep-all;
    -webkit-font-smoothing: antialiased;
  }
  a { color: inherit; text-decoration: none; }
  a:hover { color: var(--accent); }

  /* TOPBAR — name + tagline + nav, replaces hero */
  .topbar {
    position: sticky;
    top: 0;
    z-index: 50;
    background: color-mix(in srgb, var(--bg) 85%, transparent);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--line);
  }
  .topbar-inner {
    max-width: 1080px;
    margin: 0 auto;
    padding: 14px 32px;
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 32px;
    align-items: center;
  }
  .brand {
    display: flex;
    flex-direction: column;
    gap: 1px;
    line-height: 1.15;
  }
  .brand .name {
    font-size: 15px;
    font-weight: 800;
    letter-spacing: -0.01em;
  }
  .brand .tag {
    font-size: 11px;
    font-weight: 500;
    color: var(--muted);
    letter-spacing: 0.04em;
  }
  .nav {
    display: flex;
    flex-wrap: wrap;
    gap: 28px;
    justify-content: center;
    font-size: 13px;
    font-weight: 600;
    color: var(--ink-soft);
  }
  .nav a {
    padding: 6px 0;
    position: relative;
  }
  .nav .resume-link {
    color: var(--accent) !important;
    font-weight: 700;
    white-space: nowrap;
  }
  .nav a::after {
    content: '';
    position: absolute;
    left: 0; right: 0; bottom: 0;
    height: 2px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform 180ms ease;
  }
  .nav a:hover::after { transform: scaleX(1); }
  .tools {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 12px;
    color: var(--muted);
  }
  .icon-btn {
    width: 32px; height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: background 180ms ease, color 180ms ease;
  }
  .icon-btn:hover {
    background: var(--accent-soft);
    color: var(--accent);
  }
  .icon-btn svg { width: 16px; height: 16px; }
  .theme-toggle {
    background: transparent;
    border: none;
    color: var(--muted);
    cursor: pointer;
    padding: 0;
  }
  .theme-toggle:hover { color: var(--accent); }
  .theme-toggle .theme-icon-moon { display: none; }
  [data-theme="dark"] .theme-toggle .theme-icon-sun { display: none; }
  [data-theme="dark"] .theme-toggle .theme-icon-moon { display: inline-block; }

  .language-toggle {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 28px;
    padding: 3px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: var(--card);
    color: var(--muted);
    cursor: pointer;
    transition: border-color 0.16s ease, background 0.16s ease;
  }

  .language-toggle:hover {
    border-color: color-mix(in srgb, var(--accent) 35%, var(--line));
    background: color-mix(in srgb, var(--accent) 8%, var(--card));
  }

  .language-toggle-track {
    position: relative;
    display: block;
    width: 100%;
    height: 100%;
    border-radius: inherit;
  }

  .language-toggle-thumb {
    position: absolute;
    top: 0;
    left: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border-radius: 999px;
    background: var(--muted);
    color: var(--bg);
    box-shadow: 0 4px 10px rgba(15, 23, 42, 0.12);
    transition: transform 0.18s ease, background 0.18s ease, color 0.18s ease;
  }

  .language-toggle-thumb svg {
    width: 13px;
    height: 13px;
  }

  .language-toggle[aria-pressed="true"] .language-toggle-thumb {
    transform: translateX(18px);
    background: var(--accent);
    color: #fff;
  }

  /* MAIN */
  main {
    max-width: 1080px;
    margin: 0 auto;
    padding: 56px 32px 120px;
  }

  section {
    margin-bottom: 96px;
  }
  .section-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-bottom: 28px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--line);
  }
  .section-head h2 {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    margin: 0;
    color: var(--ink);
  }
  .section-head .count {
    font-size: 12px;
    color: var(--muted);
  }
  .subhead {
    font-size: 14px;
    font-weight: 700;
    color: var(--ink-soft);
    margin: 32px 0 16px;
    letter-spacing: -0.01em;
  }

  /* ABOUT */
  .about-hero {
    text-align: center;
    padding: 12px 0 4px;
  }
  .about-name {
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin: 0 0 8px;
    color: var(--ink);
    line-height: 1.15;
  }
  .about-role {
    font-size: 15px;
    color: var(--muted);
    font-weight: 400;
    margin: 0 0 14px;
    letter-spacing: -0.005em;
  }
  .about-meta {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 24px;
    color: var(--muted);
    font-size: 13px;
  }
  .about-meta-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }
  .about-meta-item svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
  }
  .about-meta a {
    transition: color 180ms ease;
  }
  .about-meta a:hover { color: var(--accent); }
  .about-greeting {
    text-align: center;
    margin-top: 36px;
    padding-top: 28px;
    border-top: 1px solid var(--line);
  }
  .about-greeting p {
    font-size: 15px;
    line-height: 1.7;
    color: var(--ink-soft);
    margin: 0 0 6px;
  }
  .about-greeting .lead {
    font-size: 16px;
    color: var(--ink);
    font-weight: 500;
  }

  /* SKILLS — iMessage panel + tab-driven conversation */
  .chat-app {
    max-width: 540px;
    margin: 0 auto;
    border: 1px solid var(--line);
    border-radius: 22px;
    overflow: hidden;
    background: var(--bg);
    box-shadow: 0 12px 32px rgba(15, 17, 21, 0.05);
    transition: border-color 220ms ease, transform 220ms ease, box-shadow 220ms ease;
  }
  .chat-app:hover,
  .chat-app:focus-within {
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 18px 40px rgba(21, 145, 214, 0.12);
  }
  .chat-app-header {
    position: relative;
    padding: 12px 14px;
    background: linear-gradient(to bottom, var(--bg-elevated), var(--bg-elevated-2));
    border-bottom: 1px solid var(--line);
    text-align: center;
  }
  .window-traffic {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    gap: 6px;
  }
  .window-traffic span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    box-shadow: inset 0 0 0 0.5px rgba(0, 0, 0, 0.1);
  }
  .window-traffic .red { background: #ff5f57; }
  .window-traffic .yellow { background: #ffbd2e; }
  .window-traffic .green { background: #28ca41; }
  .chat-app-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--ink-soft);
    letter-spacing: -0.01em;
  }
  .chat-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    padding: 10px 12px;
    border-bottom: 1px solid var(--line);
    justify-content: center;
  }
  .chat-tab {
    background: transparent;
    border: 1px solid var(--line);
    padding: 4px 11px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 600;
    color: var(--muted);
    cursor: pointer;
    transition: background 180ms ease, color 180ms ease, border-color 180ms ease;
  }
  .chat-tab:hover {
    border-color: var(--accent);
    color: var(--accent);
  }
  .chat-tab.active {
    background: var(--accent);
    color: #ffffff;
    border-color: var(--accent);
  }
  .chat-thread {
    padding: 16px 14px 18px;
    min-height: 180px;
    max-height: 360px;
    overflow-y: auto;
    scroll-behavior: smooth;
  }
  .chat-thread::-webkit-scrollbar { width: 4px; }
  .chat-thread::-webkit-scrollbar-track { background: transparent; }
  .chat-thread::-webkit-scrollbar-thumb {
    background: var(--line-strong);
    border-radius: 2px;
  }
  .chat-conversation {
    display: none;
    flex-direction: column;
    gap: 4px;
  }
  .chat-conversation.active {
    display: flex;
    animation: chatFadeUp 320ms cubic-bezier(0.32, 0.72, 0, 1) both;
  }
  /* All-view — flat icon grid (no bubbles) */
  .all-skills-view {
    display: none;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    padding: 12px 8px;
  }
  .all-skills-view.active {
    display: flex;
    animation: chatFadeUp 320ms cubic-bezier(0.32, 0.72, 0, 1) both;
  }
  .all-skills-view .chat-icon {
    width: 40px;
    height: 40px;
  }
  @keyframes chatFadeUp {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
  }
  .chat-row {
    display: flex;
    margin-bottom: 6px;
  }
  .chat-row.user { justify-content: flex-end; }
  .chat-row.bot { justify-content: flex-start; margin-bottom: 14px; }
  .chat-bubble {
    padding: 10px 14px;
    border-radius: 18px;
    max-width: 78%;
    font-size: 14px;
    line-height: 1.4;
    transition: transform 240ms cubic-bezier(0.32, 0.72, 0, 1),
                box-shadow 240ms ease;
  }
  .chat-row.user .chat-bubble {
    background: linear-gradient(180deg,
                  var(--accent),
                  color-mix(in srgb, var(--accent) 84%, #000));
    color: #ffffff;
    border-bottom-right-radius: 5px;
    font-weight: 600;
    box-shadow: 0 2px 8px color-mix(in srgb, var(--accent) 30%, transparent),
                0 1px 2px rgba(15, 17, 21, 0.06);
  }
  .chat-row.bot .chat-bubble {
    background: var(--bg-soft);
    color: var(--ink);
    border-bottom-left-radius: 5px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 12px 14px;
    box-shadow: 0 1px 3px rgba(15, 17, 21, 0.05),
                inset 0 0 0 0.5px rgba(15, 17, 21, 0.04);
  }
  .chat-app:hover .chat-row.user .chat-bubble {
    transform: translateY(-1px);
    box-shadow: 0 4px 14px color-mix(in srgb, var(--accent) 38%, transparent),
                0 1px 2px rgba(15, 17, 21, 0.08);
  }
  .chat-app:hover .chat-row.bot .chat-bubble {
    box-shadow: 0 2px 6px rgba(15, 17, 21, 0.07),
                inset 0 0 0 0.5px rgba(15, 17, 21, 0.04);
  }
  .chat-icon {
    width: 36px;
    height: 36px;
    border-radius: 7px;
    transition: transform 180ms ease, box-shadow 180ms ease;
  }
  /* Transparent-source icons (HF, LangChain) get a wrapper tile — white in light, dark navy in dark */
  .chat-icon.is-tiled {
    background: var(--tile-bg);
    border: 1px solid var(--tile-border);
    padding: 5px;
    box-sizing: border-box;
  }
  .chat-icon:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 4px 10px rgba(15, 17, 21, 0.18);
  }
  .chat-typing {
    display: inline-flex;
    gap: 3px;
    align-items: center;
    padding: 14px 16px;
  }
  .chat-typing span {
    width: 6px;
    height: 6px;
    background: var(--muted);
    border-radius: 50%;
    opacity: 0.5;
    animation: typing 1.2s infinite ease-in-out;
  }
  .chat-typing span:nth-child(2) { animation-delay: 0.15s; }
  .chat-typing span:nth-child(3) { animation-delay: 0.3s; }
  @keyframes typing {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.5; }
    30% { transform: translateY(-4px); opacity: 1; }
  }
  .brand-icon {
    height: 36px !important;
    width: 36px !important;
    padding: 6px;
    border-radius: 8px;
    background: var(--chip-bg);
    border: 1px solid var(--line);
    object-fit: contain;
    transition: transform 180ms ease, border-color 180ms ease;
  }
  .brand-icon:hover {
    transform: translateY(-2px);
    border-color: var(--accent);
  }
  .skills-icons img {
    max-width: 100%;
    height: auto;
  }
  .skills-tags {
    margin-top: 12px;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
  }
  .chip {
    background: var(--chip-bg);
    color: var(--ink-soft);
    padding: 5px 11px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
    border: 1px solid var(--line);
  }
  .chip.accent {
    background: var(--accent-soft);
    color: var(--accent);
    border-color: transparent;
  }

  /* PROJECT GRID — Sol-namoo / Jane Choi style 2-column */
  .project-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  /* PROJECT CARD — vertical layout (title on top, thumb below, content next) */
  .project {
    display: flex;
    flex-direction: column;
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: 14px;
    cursor: pointer;
    background: var(--bg);
    transition: border-color 280ms ease, transform 320ms cubic-bezier(0.32, 0.72, 0, 1), box-shadow 280ms ease;
  }
  /* Reorder: title first → thumb → rest */
  .project .project-title { order: -2; margin-bottom: 4px; }
  .project .project-meta { order: -1; margin-bottom: 12px; }
  .project .project-thumb { order: 0; margin-bottom: 14px; margin-top: 0; }
  .project .project-desc { order: 1; }
  .project .key-achievements { order: 2; }
  .project .stack-row { order: 3; }
  .project .project-arrow { order: 4; }
  .project:hover {
    border-color: var(--accent);
    transform: translateY(-6px);
    box-shadow: 0 24px 48px rgba(15, 17, 21, 0.10), 0 4px 12px rgba(15, 17, 21, 0.04);
  }
  .project-arrow {
    margin-top: auto;
    align-self: flex-end;
    color: var(--muted);
    font-size: 16px;
    opacity: 0;
    transform: translateX(-4px);
    transition: opacity 280ms ease, transform 320ms cubic-bezier(0.32, 0.72, 0, 1), color 280ms ease;
  }
  .project:hover .project-arrow {
    opacity: 1;
    transform: translateX(8px);
    color: var(--accent);
  }
  .project-thumb img {
    transition: transform 520ms cubic-bezier(0.32, 0.72, 0, 1);
  }
  .project:hover .project-thumb img {
    transform: scale(1.06);
  }

  .project-thumb {
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, var(--accent-soft), var(--highlight-soft));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    color: var(--muted);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.06em;
    margin-bottom: 16px;
  }
  .project-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
  }

  .project-title {
    font-size: 17px;
    font-weight: 700;
    letter-spacing: -0.01em;
    margin: 0 0 4px;
  }
  .project-meta {
    font-size: 12px;
    color: var(--muted);
    margin-bottom: 10px;
  }
  .project-desc {
    font-size: 13px;
    color: var(--ink-soft);
    margin-bottom: 12px;
    line-height: 1.55;
  }
  .key-achievements {
    margin: 12px 0 14px;
  }
  .key-achievements .label {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 4px;
  }
  .key-achievements ul {
    margin: 0;
    padding-left: 14px;
    font-size: 12px;
  }
  .key-achievements li {
    margin: 2px 0;
    color: var(--ink-soft);
  }
  .stack-row {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
  }
  .global-badge {
    display: inline-block;
    background: var(--highlight-soft);
    color: #6f5fc7;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.08em;
    padding: 2px 8px;
    border-radius: 4px;
    margin-left: 8px;
    vertical-align: middle;
  }
  .oss-badge {
    display: inline-block;
    background: rgba(34, 197, 94, 0.12);
    color: #16a34a;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.08em;
    padding: 2px 8px;
    border-radius: 4px;
    margin-left: 8px;
    vertical-align: middle;
  }

  /* COMPACT PROJECT LIST */
  .project-list-compact { display: flex; flex-direction: column; }
  .project-row {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 24px;
    padding: 12px 0;
    border-bottom: 1px solid var(--line);
    transition: padding-left 180ms ease;
  }
  .project-row:hover { padding-left: 8px; }
  .project-row .row-title { font-size: 14px; font-weight: 600; }
  .project-row .row-desc { font-size: 13px; color: var(--muted); margin-top: 2px; }
  .project-row .row-metric { font-size: 12px; color: var(--accent); font-weight: 700; white-space: nowrap; }

  /* EXPERIENCE + EDUCATION */
  .exp-row, .edu-row {
    display: grid;
    grid-template-columns: 1fr 180px;
    gap: 28px;
    padding: 20px 0;
    border-bottom: 1px solid var(--line);
  }
  .exp-row:last-child, .edu-row:last-child { border-bottom: none; }
  .exp-role {
    font-size: 16px;
    font-weight: 700;
    color: var(--ink);
    letter-spacing: -0.01em;
    margin-bottom: 4px;
  }
  .exp-company {
    font-size: 13px;
    color: var(--ink-soft);
    font-weight: 500;
    margin-bottom: 6px;
  }
  .exp-desc {
    font-size: 13px;
    color: var(--ink-soft);
    margin: 6px 0 10px;
    line-height: 1.55;
  }
  .exp-list {
    margin: 0;
    padding-left: 14px;
    font-size: 13px;
    color: var(--ink-soft);
  }
  .exp-list li { margin: 3px 0; }
  .exp-meta, .edu-meta {
    font-size: 12px;
    color: var(--muted);
    text-align: right;
    letter-spacing: 0.02em;
    line-height: 1.5;
  }
  .edu-degree {
    font-size: 15px;
    font-weight: 700;
    color: var(--ink);
    letter-spacing: -0.005em;
  }
  .edu-school {
    font-size: 13px;
    color: var(--ink-soft);
    margin-top: 3px;
  }
  .edu-extra {
    font-size: 12px;
    color: var(--muted);
    margin-top: 6px;
  }
  .edu-highlights {
    margin: 10px 0 0;
    padding-left: 14px;
    font-size: 13px;
    color: var(--ink-soft);
    line-height: 1.55;
  }
  .edu-highlights li { margin: 4px 0; }
  @media (max-width: 720px) {
    .exp-row, .edu-row { grid-template-columns: 1fr; gap: 6px; }
    .exp-meta, .edu-meta { text-align: left; }
  }

  /* ACTIVITIES */
  .activity-row {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 20px;
    padding: 10px 0;
    border-bottom: 1px solid var(--line);
    font-size: 14px;
  }
  .activity-row:last-child { border-bottom: none; }
  .activity-row .when { color: var(--muted); font-size: 12px; }

  /* CONTACT — horizontal icon row */
  .contact-row-h {
    display: flex;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
  }
  .contact-btn {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: var(--chip-bg);
    color: var(--ink-soft);
    border: 1px solid transparent;
    transition: background 200ms ease, color 200ms ease, transform 200ms ease, border-color 200ms ease;
    cursor: pointer;
  }
  .contact-btn:hover {
    background: var(--accent-soft);
    color: var(--accent);
    transform: translateY(-3px);
    border-color: var(--accent);
  }
  .contact-btn svg {
    width: 20px;
    height: 20px;
  }
  .contact-loc {
    text-align: center;
    color: var(--muted);
    font-size: 12px;
    margin-top: 16px;
    letter-spacing: 0.04em;
  }

  footer {
    margin-top: 80px;
    padding-top: 24px;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 12px;
    text-align: center;
  }

  /* MODAL — project detail */
  .modal-backdrop {
    position: fixed;
    inset: 0;
    z-index: 100;
    background: rgba(15, 17, 21, 0);
    backdrop-filter: blur(0px);
    pointer-events: none;
    transition: background 280ms ease, backdrop-filter 280ms ease;
  }
  .modal-backdrop.open {
    background: rgba(15, 17, 21, 0.45);
    backdrop-filter: blur(12px);
    pointer-events: auto;
  }
  .modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -48%) scale(0.96);
    z-index: 101;
    width: min(92vw, 880px);
    max-height: 88vh;
    background: var(--bg);
    border-radius: 20px;
    box-shadow: 0 32px 80px rgba(15, 17, 21, 0.18);
    overflow-y: auto;
    opacity: 0;
    pointer-events: none;
    transition: opacity 280ms cubic-bezier(0.32, 0.72, 0, 1),
                transform 320ms cubic-bezier(0.32, 0.72, 0, 1);
  }
  .modal.open {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
    pointer-events: auto;
  }
  .modal-close {
    position: sticky;
    top: 16px;
    margin-left: auto;
    margin-right: 16px;
    width: 36px; height: 36px;
    background: color-mix(in srgb, var(--bg) 92%, transparent);
    color: var(--ink);
    border: 1px solid var(--line);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 2;
    transition: background 180ms ease, transform 180ms ease;
    float: right;
  }
  .modal-close:hover {
    background: var(--accent-soft);
    transform: rotate(90deg);
  }
  /* Code blocks adapt to theme */
  .modal-content pre {
    background: var(--bg-elevated);
    color: var(--ink);
    padding: 12px;
    border-radius: 8px;
    font-size: 13px;
    overflow-x: auto;
    border: 1px solid var(--line);
  }
  [data-theme="dark"] .modal-content pre {
    background: var(--bg-elevated-2);
  }
  .modal-content code {
    background: color-mix(in srgb, var(--ink) 8%, transparent);
    color: var(--ink);
  }
  .modal-content {
    padding: 56px 64px 64px;
  }
  .modal h1 {
    font-size: 32px;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin: 0 0 8px;
    overflow-wrap: break-word;
    word-break: keep-all;
  }
  .modal-content code {
    font-family: ui-monospace, SFMono-Regular, monospace;
    font-size: 0.92em;
    background: rgba(0,0,0,0.04);
    padding: 1px 6px;
    border-radius: 4px;
    word-break: break-all;
    overflow-wrap: anywhere;
  }
  .modal-content pre {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    max-width: 100%;
  }
  .modal-content pre code {
    background: transparent;
    padding: 0;
    word-break: normal;
    overflow-wrap: normal;
    white-space: pre;
  }
  .modal-content p,
  .modal-content li {
    overflow-wrap: anywhere;
    word-break: break-word;
  }
  .modal .modal-meta {
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 32px;
  }
  .modal h3 {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--muted);
    margin: 32px 0 12px;
  }
  .modal p, .modal li {
    font-size: 14px;
    color: var(--ink-soft);
    line-height: 1.7;
  }
  .modal ul {
    padding-left: 18px;
    margin: 0;
  }
  .modal-section + .modal-section {
    margin-top: 28px;
  }
  .modal-arch-image {
    width: 100%;
    border-radius: 12px;
    margin: 12px 0;
    border: 1px solid var(--line);
  }
  .modal-links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
  }
  .modal-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 14px;
    border: 1px solid var(--line);
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--ink-soft);
    transition: border-color 180ms ease, color 180ms ease, background 180ms ease;
  }
  .modal-link:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-soft);
  }

  body.modal-open { overflow: hidden; }

  /* Load more — minimalist hairline divider style */
  .collapsible {
    max-height: 0;
    overflow: hidden;
    transition: max-height 600ms cubic-bezier(0.32, 0.72, 0, 1);
  }
  .collapsible.is-open {
    max-height: 4000px;
  }
  .load-more-btn {
    display: flex;
    align-items: center;
    gap: 14px;
    margin: 28px auto 0;
    padding: 8px 0;
    background: transparent;
    border: 0;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--muted);
    cursor: pointer;
    transition: color 220ms ease;
  }
  .load-more-btn::before,
  .load-more-btn::after {
    content: '';
    width: 36px;
    height: 1px;
    background: var(--line-strong);
    transition: width 280ms ease, background 280ms ease;
  }
  .load-more-btn:hover {
    color: var(--accent);
  }
  .load-more-btn:hover::before,
  .load-more-btn:hover::after {
    width: 56px;
    background: var(--accent);
  }
  .load-more-btn .arrow {
    display: inline-block;
    transition: transform 280ms cubic-bezier(0.32, 0.72, 0, 1);
    font-size: 10px;
  }
  .load-more-btn[aria-expanded="true"] .arrow {
    transform: rotate(180deg);
  }
  /* When collapsible opens, stagger reveal child rows */
  .collapsible.is-open .project-row {
    animation: chatFadeUp 480ms cubic-bezier(0.32, 0.72, 0, 1) both;
  }
  .collapsible.is-open .project-row:nth-child(1) { animation-delay: 0ms; }
  .collapsible.is-open .project-row:nth-child(2) { animation-delay: 60ms; }
  .collapsible.is-open .project-row:nth-child(3) { animation-delay: 120ms; }
  .collapsible.is-open .project-row:nth-child(4) { animation-delay: 180ms; }
  .collapsible.is-open .project-row:nth-child(5) { animation-delay: 240ms; }
  .collapsible.is-open .project-row:nth-child(6) { animation-delay: 300ms; }
  .collapsible.is-open .project-row:nth-child(n+7) { animation-delay: 360ms; }

  /* Project filter row */
  .filter-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 4px 0 24px;
  }
  .filter-chip {
    appearance: none;
    border: 1px solid var(--line);
    background: var(--bg);
    color: var(--ink-soft);
    padding: 7px 14px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: background 160ms ease, color 160ms ease, border-color 160ms ease;
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }
  .filter-chip:hover {
    background: var(--accent-soft);
    color: var(--accent);
    border-color: var(--accent-soft);
  }
  /* Pastel active state — soft bg + matching darker text */
  .filter-chip.active {
    background: #ede9fe;
    color: #5b21b6;
    border-color: #ddd6fe;
  }
  .filter-chip.active[data-filter="all"]         { background: #f1f5f9; color: #334155; border-color: #e2e8f0; }
  .filter-chip.active[data-filter="agent"]       { background: #dbeafe; color: #1d4ed8; border-color: #bfdbfe; }
  .filter-chip.active[data-filter="llm"]         { background: #dcfce7; color: #15803d; border-color: #bbf7d0; }
  .filter-chip.active[data-filter="multimodal"]  { background: #fce7f3; color: #be185d; border-color: #fbcfe8; }
  .filter-chip.active[data-filter="cv"]          { background: #ffedd5; color: #c2410c; border-color: #fed7aa; }
  .filter-chip.active[data-filter="edge"]        { background: #fef3c7; color: #b45309; border-color: #fde68a; }
  .filter-chip.active[data-filter="rag"]         { background: #cffafe; color: #0e7490; border-color: #a5f3fc; }
  .filter-chip.active[data-filter="voice"]       { background: #f3e8ff; color: #7e22ce; border-color: #e9d5ff; }
  .filter-chip.active[data-filter="oss"]         { background: #e0e7ff; color: #4338ca; border-color: #c7d2fe; }
  .filter-chip.active[data-filter="fullstack"]   { background: #ccfbf1; color: #115e59; border-color: #99f6e4; }
  /* Hover — show category color hint without committing */
  .filter-chip[data-filter="all"]:hover:not(.active)        { color: #334155; border-color: #cbd5e1; }
  .filter-chip[data-filter="agent"]:hover:not(.active)      { color: #1d4ed8; border-color: #bfdbfe; }
  .filter-chip[data-filter="llm"]:hover:not(.active)        { color: #15803d; border-color: #bbf7d0; }
  .filter-chip[data-filter="multimodal"]:hover:not(.active) { color: #be185d; border-color: #fbcfe8; }
  .filter-chip[data-filter="cv"]:hover:not(.active)         { color: #c2410c; border-color: #fed7aa; }
  .filter-chip[data-filter="edge"]:hover:not(.active)       { color: #b45309; border-color: #fde68a; }
  .filter-chip[data-filter="rag"]:hover:not(.active)        { color: #0e7490; border-color: #a5f3fc; }
  .filter-chip[data-filter="voice"]:hover:not(.active)      { color: #7e22ce; border-color: #e9d5ff; }
  .filter-chip[data-filter="oss"]:hover:not(.active)        { color: #4338ca; border-color: #c7d2fe; }
  .filter-chip[data-filter="fullstack"]:hover:not(.active)  { color: #115e59; border-color: #99f6e4; }
  .filter-num {
    font-size: 11px;
    opacity: 0.7;
    font-variant-numeric: tabular-nums;
  }
  .project[data-hidden] {
    display: none;
  }

  /* SCROLL FADE-UP — sections + cards reveal on viewport entry */
  .reveal {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 600ms cubic-bezier(0.32, 0.72, 0, 1),
                transform 600ms cubic-bezier(0.32, 0.72, 0, 1);
    will-change: opacity, transform;
  }
  .reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
  }
  /* staggered children — applied to direct children of .reveal-stagger */
  .reveal-stagger > * {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 500ms cubic-bezier(0.32, 0.72, 0, 1),
                transform 500ms cubic-bezier(0.32, 0.72, 0, 1);
  }
  .reveal-stagger.is-visible > * {
    opacity: 1;
    transform: translateY(0);
  }
  .reveal-stagger.is-visible > *:nth-child(1) { transition-delay: 0ms; }
  .reveal-stagger.is-visible > *:nth-child(2) { transition-delay: 60ms; }
  .reveal-stagger.is-visible > *:nth-child(3) { transition-delay: 120ms; }
  .reveal-stagger.is-visible > *:nth-child(4) { transition-delay: 180ms; }
  .reveal-stagger.is-visible > *:nth-child(5) { transition-delay: 240ms; }
  .reveal-stagger.is-visible > *:nth-child(6) { transition-delay: 300ms; }
  .reveal-stagger.is-visible > *:nth-child(7) { transition-delay: 360ms; }
  .reveal-stagger.is-visible > *:nth-child(8) { transition-delay: 420ms; }
  @media (prefers-reduced-motion: reduce) {
    .reveal, .reveal-stagger > * {
      opacity: 1 !important;
      transform: none !important;
      transition: none !important;
    }
  }

  /* OPEN SOURCE — logo row */
  .oss-row {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    justify-content: center;
    max-width: 500px;
    margin: 0 auto;
    padding: 8px 0;
  }
  .oss-item {
    position: relative;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: var(--chip-bg);
    border: 1px solid var(--line);
    transition: transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
    cursor: pointer;
  }
  .oss-item:hover {
    transform: translateY(-3px);
    border-color: var(--accent);
    box-shadow: 0 10px 24px rgba(15, 17, 21, 0.07);
  }
  .oss-item img {
    width: 32px;
    height: 32px;
    object-fit: contain;
  }
  .oss-item.is-pending {
    opacity: 0.65;
  }
  .oss-item.is-pending::after {
    content: '⏳';
    position: absolute;
    top: -6px;
    right: -6px;
    font-size: 12px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 50%;
    width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .oss-item.is-merged::after {
    content: '✓';
    position: absolute;
    top: -6px;
    right: -6px;
    font-size: 10px;
    font-weight: 700;
    background: #10b981;
    color: #ffffff;
    border-radius: 50%;
    width: 16px;
    height: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .oss-legend {
    display: flex;
    gap: 18px;
    justify-content: center;
    margin-top: 18px;
    font-size: 11px;
    color: var(--muted);
  }
  .oss-legend span::before {
    margin-right: 4px;
    font-weight: 700;
  }
  .oss-legend .merged::before { content: '✓'; color: #10b981; }
  .oss-legend .pending::before { content: '⏳'; }

  /* Icon tooltip — single element, follows mouse */
  .icon-tooltip {
    position: absolute;
    background: #1f2937;
    color: #ffffff;
    padding: 5px 10px;
    border-radius: 7px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.02em;
    white-space: nowrap;
    pointer-events: none;
    opacity: 0;
    transform: translate(-50%, -8px);
    transition: opacity 150ms ease, transform 150ms ease;
    z-index: 200;
    box-shadow: 0 4px 12px rgba(15,17,21,0.18);
  }
  .icon-tooltip.visible {
    opacity: 1;
    transform: translate(-50%, -12px);
  }
  .icon-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 4px solid transparent;
    border-top-color: #1f2937;
  }

  /* CERTIFICATIONS — logo row + dropdown panel */
  .cert-row {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    justify-content: center;
    padding: 8px 0;
  }
  .cert-item {
    position: relative;
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: var(--chip-bg);
    border: 1px solid var(--line);
    transition: transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease, background 220ms ease;
    cursor: pointer;
    padding: 0;
    font: inherit;
    color: inherit;
  }
  .cert-item:hover {
    transform: translateY(-3px);
    border-color: var(--accent);
    box-shadow: 0 10px 24px rgba(15, 17, 21, 0.07);
  }
  .cert-item.active {
    border-color: var(--accent);
    background: var(--accent-soft);
    box-shadow: 0 10px 24px rgba(15, 17, 21, 0.07);
  }
  .cert-item img {
    width: 34px;
    height: 34px;
    object-fit: contain;
  }
  .cert-text-logo {
    font-size: 9px;
    font-weight: 700;
    text-align: center;
    line-height: 1.15;
    color: var(--ink-soft);
    padding: 4px;
  }
  .cert-count-badge {
    position: absolute;
    top: -7px;
    right: -7px;
    font-size: 10px;
    font-weight: 700;
    background: var(--ink);
    color: var(--bg);
    border-radius: 999px;
    min-width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 5px;
    border: 2px solid var(--bg);
  }
  .cert-panel {
    margin-top: 18px;
    background: var(--bg-elevated);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 320ms ease, opacity 200ms ease, padding 320ms ease;
  }
  .cert-panel.open {
    max-height: 900px;
    opacity: 1;
    padding: 18px 20px;
  }
  .cert-panel-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 10px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--line);
  }
  .cert-panel-issuer {
    font-weight: 700;
    font-size: 14px;
    color: var(--ink);
  }
  .cert-panel-count {
    font-size: 12px;
    color: var(--muted);
  }
  .cert-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
  }
  .cert-list-row {
    display: grid;
    grid-template-columns: 78px 1fr;
    gap: 14px;
    font-size: 13px;
    padding: 6px 0;
    border-bottom: 1px dashed var(--line);
  }
  .cert-list-row:last-child { border-bottom: none; }
  .cert-list-row .cert-date {
    color: var(--muted);
    font-size: 12px;
    font-variant-numeric: tabular-nums;
  }
  .cert-list-row .cert-name { color: var(--ink-soft); }

  /* AWARDS — featured cards + collapsible full list */
  .awards-featured {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 14px;
    margin-bottom: 22px;
  }
  .award-featured {
    background: var(--bg-elevated);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 16px 18px;
    transition: transform 200ms ease, border-color 200ms ease, box-shadow 200ms ease;
  }
  .award-featured:hover {
    transform: translateY(-2px);
    border-color: var(--accent);
    box-shadow: 0 10px 22px rgba(15, 17, 21, 0.06);
  }
  .award-featured .award-tier {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: var(--accent);
    text-transform: uppercase;
    margin-bottom: 6px;
  }
  .award-featured .award-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--ink);
    line-height: 1.4;
    margin-bottom: 6px;
  }
  .award-featured .award-meta {
    font-size: 12px;
    color: var(--muted);
    line-height: 1.45;
  }
  .awards-toggle {
    display: block;
    margin: 0 auto;
    background: none;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 8px 18px;
    font-size: 12px;
    font-weight: 600;
    color: var(--muted);
    cursor: pointer;
    transition: border-color 200ms ease, color 200ms ease;
  }
  .awards-toggle:hover {
    border-color: var(--accent);
    color: var(--accent);
  }
  .awards-list {
    margin-top: 18px;
    display: none;
  }
  .awards-list.open { display: block; }
  .awards-year { margin-bottom: 18px; }
  .awards-year-label {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--muted);
    text-transform: uppercase;
    margin-bottom: 6px;
    padding-bottom: 4px;
    border-bottom: 1px solid var(--line);
  }
  .award-row {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 16px;
    padding: 8px 0;
    border-bottom: 1px solid var(--line);
    font-size: 13px;
  }
  .award-row:last-child { border-bottom: none; }
  .award-row .award-row-title { color: var(--ink-soft); }
  .award-row .award-row-issuer { color: var(--muted); font-size: 12px; margin-top: 2px; }
  .award-row .award-row-tier {
    font-size: 11px;
    font-weight: 700;
    white-space: nowrap;
    color: var(--accent);
    letter-spacing: 0.04em;
    align-self: start;
  }

  /* ABOUT — subtle dot grid background */
  .about {
    position: relative;
    overflow: hidden;
    isolation: isolate;
  }
  .about::before {
    content: '';
    position: absolute;
    inset: -40px;
    background-image: radial-gradient(circle, var(--ink) 1px, transparent 1.4px);
    background-size: 22px 22px;
    opacity: 0.045;
    pointer-events: none;
    z-index: -1;
    -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 45%, #000 30%, transparent 80%);
            mask-image: radial-gradient(ellipse 70% 60% at 50% 45%, #000 30%, transparent 80%);
  }
  [data-theme="dark"] .about::before { opacity: 0.10; }

  /* FLOATING ACTION BAR */
  .fab-stack {
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: 60;
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: flex-end;
    opacity: 0;
    transform: translateY(12px);
    pointer-events: none;
    transition: opacity 280ms ease, transform 280ms cubic-bezier(0.32, 0.72, 0, 1);
  }
  .fab-stack.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
  .fab-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: 999px;
    background: var(--ink);
    color: var(--bg);
    font-size: 12px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    text-decoration: none;
    box-shadow: 0 8px 22px rgba(15, 17, 21, 0.18);
    transition: transform 200ms ease, background 200ms ease;
  }
  .fab-btn:hover {
    transform: translateY(-2px);
    background: var(--accent);
    color: #fff;
  }
  .fab-btn svg { width: 14px; height: 14px; stroke: currentColor; fill: none; stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; }
  .fab-btn.fab-icon-only { padding: 12px; }

  /* SECTION PROGRESS RAIL */
  .section-rail {
    position: fixed;
    left: 28px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 50;
    display: flex;
    flex-direction: column;
    gap: 14px;
  }
  .rail-dot {
    position: relative;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--line-strong);
    border: none;
    padding: 0;
    cursor: pointer;
    transition: background 280ms ease, height 320ms cubic-bezier(0.32, 0.72, 0, 1), width 280ms ease, border-radius 280ms ease;
  }
  .rail-dot:hover { background: var(--accent); }
  .rail-dot.active {
    background: var(--accent);
    height: 22px;
    border-radius: 4px;
  }
  .rail-dot::after {
    content: attr(data-label);
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%) translateX(-4px);
    background: var(--ink);
    color: var(--bg);
    font-size: 11px;
    font-weight: 600;
    padding: 4px 8px;
    border-radius: 6px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 200ms ease, transform 200ms ease;
  }
  .rail-dot:hover::after {
    opacity: 1;
    transform: translateY(-50%) translateX(0);
  }
  @media (max-width: 1100px) { .section-rail { display: none; } }

  /* COMMAND PALETTE */
  .cmd-overlay {
    position: fixed;
    inset: 0;
    z-index: 200;
    background: rgba(15, 17, 21, 0);
    backdrop-filter: blur(0px);
    -webkit-backdrop-filter: blur(0px);
    pointer-events: none;
    transition: background 220ms ease, backdrop-filter 220ms ease;
  }
  .cmd-overlay.open {
    background: rgba(15, 17, 21, 0.42);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    pointer-events: auto;
  }
  .cmd-palette {
    position: fixed;
    top: 16%;
    left: 50%;
    transform: translateX(-50%) translateY(-8px) scale(0.96);
    width: min(92vw, 600px);
    max-height: 64vh;
    z-index: 201;
    background: var(--bg);
    border: 1px solid var(--line);
    border-radius: 14px;
    box-shadow: 0 24px 64px rgba(15, 17, 21, 0.25);
    overflow: hidden;
    opacity: 0;
    pointer-events: none;
    transition: opacity 220ms ease, transform 240ms cubic-bezier(0.32, 0.72, 0, 1);
    display: flex;
    flex-direction: column;
  }
  .cmd-palette.open {
    opacity: 1;
    transform: translateX(-50%) translateY(0) scale(1);
    pointer-events: auto;
  }
  .cmd-input-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 18px;
    border-bottom: 1px solid var(--line);
  }
  .cmd-input-wrap svg { width: 16px; height: 16px; color: var(--muted); flex-shrink: 0; }
  .cmd-input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    font: inherit;
    font-size: 15px;
    color: var(--ink);
  }
  .cmd-input::placeholder { color: var(--muted); }
  .cmd-results { overflow-y: auto; flex: 1; padding: 6px; }
  .cmd-group-label {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
    padding: 10px 12px 4px;
  }
  .cmd-result {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 8px;
    cursor: pointer;
    color: var(--ink);
    font-size: 14px;
    transition: background 120ms ease;
  }
  .cmd-result:hover, .cmd-result.active { background: var(--bg-elevated); }
  .cmd-result-meta { margin-left: auto; font-size: 11px; color: var(--muted); }
  .cmd-result-icon {
    width: 22px;
    height: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--muted);
    flex-shrink: 0;
    font-size: 12px;
  }
  .cmd-empty { padding: 24px; text-align: center; font-size: 13px; color: var(--muted); }
  .cmd-hint {
    display: flex;
    justify-content: space-between;
    padding: 8px 16px;
    border-top: 1px solid var(--line);
    font-size: 11px;
    color: var(--muted);
  }
  .cmd-key {
    display: inline-block;
    padding: 1px 6px;
    border: 1px solid var(--line);
    border-radius: 4px;
    background: var(--bg-elevated);
    font-family: ui-monospace, SF Mono, Menlo, monospace;
    font-size: 10px;
    margin: 0 2px;
  }

  /* PLACEHOLDER style — empty shell distinguishable */
  .placeholder {
    color: var(--muted);
    font-style: italic;
  }

  @media (max-width: 720px) {
    .topbar-inner { grid-template-columns: 1fr; gap: 8px; padding: 12px 20px; }
    .nav { gap: 14px 18px; justify-content: flex-start; }
    .tools { justify-content: flex-start; }
    main { padding: 40px 20px 80px; }
    .project-grid { grid-template-columns: 1fr; }
    .skills-grid { grid-template-columns: 1fr; }
    .activity-row, .contact-row { grid-template-columns: 1fr; gap: 4px; }
    .modal-content { padding: 40px 28px 48px; }
    .modal h1 { font-size: 24px; }
  }