.nav-link {
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--sans);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ink-2);
  padding: 0.5rem 1rem;
  border-radius: 6px;
  transition: background 0.15s, color 0.15s;
  letter-spacing: 0.02em;
  text-decoration: none;
  display: inline-block;
}

.nav-link:hover {
  background: var(--paper-2);
  color: var(--ink);
}

  :root {
    --ink: #1a1a18;
    --ink-2: #3d3d38;
    --ink-3: #7a7a72;
    --paper: #f5f2eb;
    --paper-2: #ede9df;
    --paper-3: #e3ddd1;
    --accent: #c84b2f;
    --accent-2: #e8a87c;
    --gold: #b8952a;
    --border: rgba(26,26,24,0.12);
    --serif: 'Playfair Display', Georgia, serif;
    --sans: 'DM Sans', system-ui, sans-serif;
    --nav-h: 64px;
  }

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

  html { scroll-behavior: smooth; }

  body {
    font-family: var(--sans);
    background: var(--paper);
    color: var(--ink);
    line-height: 1.7;
    min-height: 100vh;
  }

  /* NAV */
  nav {
    position: sticky; top: 0; z-index: 100;
    height: var(--nav-h);
    background: var(--paper);
    border-bottom: 1px solid var(--border);
    display: flex; align-items: center;
    padding: 0 5vw;
    gap: 2rem;
    backdrop-filter: blur(8px);
  }

  .nav-logo {
    font-family: var(--serif);
    font-size: 1.35rem;
    font-weight: 900;
    letter-spacing: -0.5px;
    color: var(--ink);
    text-decoration: none;
    flex-shrink: 0;
    cursor: pointer;
  }
  .nav-logo span { color: var(--accent); }

  .nav-links {
    display: flex; gap: 0.25rem;
    margin-left: auto;
    list-style: none;
  }

  .nav-links button {
    background: none; border: none; cursor: pointer;
    font-family: var(--sans); font-size: 0.875rem; font-weight: 500;
    color: var(--ink-2);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: background 0.15s, color 0.15s;
    letter-spacing: 0.02em;
  }
  .nav-links button:hover { background: var(--paper-2); color: var(--ink); }
  .nav-links button.active { background: var(--ink); color: var(--paper); }

  /* PAGES */
  .page { display: none; }
  .page.active { display: block; }

  /* ===== LANDING PAGE ===== */
  .hero {
    min-height: calc(100vh - var(--nav-h));
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
  }

  .hero-left {
    padding: 6vw 5vw 4vw;
    display: flex; flex-direction: column; justify-content: center;
    border-right: 1px solid var(--border);
  }

  .hero-tag {
    font-size: 0.7rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 1.5rem;
  }

  .hero-title {
    font-family: var(--serif);
    font-size: clamp(2.8rem, 5vw, 4.5rem);
    font-weight: 900;
    line-height: 1.05;
    letter-spacing: -1.5px;
    margin-bottom: 1.5rem;
  }

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

  .hero-sub {
    font-size: 1.05rem;
    color: var(--ink-2);
    line-height: 1.75;
    max-width: 440px;
    margin-bottom: 2.5rem;
  }

  .hero-cta-row { display: flex; gap: 1rem; flex-wrap: wrap; }

  .btn-primary {
    background: var(--ink); color: var(--paper);
    border: none; cursor: pointer;
    font-family: var(--sans); font-weight: 500; font-size: 0.9rem;
    padding: 0.75rem 1.75rem; border-radius: 6px;
    transition: opacity 0.15s;
    letter-spacing: 0.01em;
  }
  .btn-primary:hover { opacity: 0.8; }

  .btn-ghost {
    background: none; color: var(--ink);
    border: 1px solid var(--border); cursor: pointer;
    font-family: var(--sans); font-weight: 500; font-size: 0.9rem;
    padding: 0.75rem 1.75rem; border-radius: 6px;
    transition: background 0.15s;
  }
  .btn-ghost:hover { background: var(--paper-2); }

  .hero-right {
    padding: 4vw;
    display: flex; flex-direction: column; justify-content: center;
    gap: 1rem;
    background: var(--paper-2);
  }

  .featured-card {
    background: var(--paper);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1.25rem 1.5rem;
    cursor: pointer;
    transition: transform 0.18s, box-shadow 0.18s;
    position: relative;
    overflow: hidden;
  }
  .featured-card::before {
    content: '';
    position: absolute; left: 0; top: 0; bottom: 0;
    width: 4px; background: var(--accent);
    border-radius: 10px 0 0 10px;
  }
  .featured-card:hover { transform: translateX(4px); box-shadow: 0 4px 20px rgba(0,0,0,0.08); }

  .fc-tag {
    font-size: 0.65rem; letter-spacing: 0.12em; text-transform: uppercase;
    color: var(--accent); font-weight: 600; margin-bottom: 0.4rem;
  }
  .fc-name { font-family: var(--serif); font-size: 1.1rem; font-weight: 700; margin-bottom: 0.2rem; }
  .fc-company { font-size: 0.8rem; color: var(--ink-3); margin-bottom: 0.5rem; }
  .fc-preview { font-size: 0.82rem; color: var(--ink-2); line-height: 1.6; }

  .stats-row {
    display: grid; grid-template-columns: repeat(3, 1fr);
    gap: 0;
    border-top: 1px solid var(--border);
    margin-top: 2rem;
  }
  .stat-item {
    padding: 2rem 5vw;
    border-right: 1px solid var(--border);
  }
  .stat-item:last-child { border-right: none; }
  .stat-num { font-family: var(--serif); font-size: 2.5rem; font-weight: 900; color: var(--accent); }
  .stat-label { font-size: 0.8rem; color: var(--ink-3); letter-spacing: 0.05em; margin-top: 0.2rem; }

  /* ===== SEARCH PAGE (Founder & Company) ===== */
  .search-page { padding: 4rem 5vw; max-width: 1100px; margin: 0 auto; }

  .search-header { margin-bottom: 2.5rem; }
  .search-header h2 {
    font-family: var(--serif); font-size: 2rem; font-weight: 900;
    letter-spacing: -0.5px; margin-bottom: 0.5rem;
  }
  .search-header p { color: var(--ink-2); font-size: 0.95rem; }

  .search-bar-wrap {
    display: flex; gap: 0.75rem; align-items: center;
    margin-bottom: 2rem;
  }

  .search-input {
    flex: 1;
    font-family: var(--sans); font-size: 1rem;
    padding: 0.85rem 1.25rem;
    border: 1.5px solid var(--border);
    border-radius: 8px;
    background: var(--paper);
    color: var(--ink);
    outline: none;
    transition: border-color 0.15s;
  }
  .search-input:focus { border-color: var(--ink); }

  .search-btn {
    background: var(--accent); color: #fff;
    border: none; cursor: pointer;
    font-family: var(--sans); font-weight: 500; font-size: 0.9rem;
    padding: 0.85rem 1.75rem; border-radius: 8px;
    transition: opacity 0.15s; white-space: nowrap;
  }
  .search-btn:hover { opacity: 0.85; }
  .search-btn:disabled { opacity: 0.5; cursor: not-allowed; }

  .filter-row {
    display: flex; gap: 0.5rem; flex-wrap: wrap; margin-bottom: 2rem;
  }
  .filter-chip {
    font-size: 0.78rem; font-family: var(--sans); font-weight: 500;
    padding: 0.4rem 0.9rem;
    border: 1px solid var(--border); border-radius: 20px;
    background: none; cursor: pointer; color: var(--ink-2);
    transition: all 0.15s;
  }
  .filter-chip:hover, .filter-chip.active {
    background: var(--ink); color: var(--paper); border-color: var(--ink);
  }

  .result-area {
    min-height: 300px;
    border: 1px solid var(--border); border-radius: 10px;
    background: var(--paper-2);
    display: flex; align-items: center; justify-content: center;
  }

  .result-placeholder {
    text-align: center; color: var(--ink-3); padding: 3rem;
  }
  .result-placeholder svg { margin-bottom: 1rem; opacity: 0.3; }
  .result-placeholder p { font-size: 0.9rem; }

  .loading-wrap { text-align: center; padding: 3rem; }
  .spinner {
    width: 36px; height: 36px; border: 3px solid var(--border);
    border-top-color: var(--accent); border-radius: 50%;
    animation: spin 0.8s linear infinite; margin: 0 auto 1rem;
  }
  @keyframes spin { to { transform: rotate(360deg); } }
  .loading-wrap p { color: var(--ink-3); font-size: 0.9rem; }

  /* ANALYSIS ARTICLE */
  .analysis-wrap { background: var(--paper); padding: 0; border-radius: 10px; overflow: hidden; }

  .analysis-header {
    background: var(--ink); color: var(--paper);
    padding: 2.5rem 3rem;
    position: relative; overflow: hidden;
  }
  .analysis-header::after {
    content: '';
    position: absolute; right: -40px; top: -40px;
    width: 200px; height: 200px;
    border-radius: 50%;
    background: rgba(255,255,255,0.04);
  }
  .ah-tag { font-size: 0.7rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--accent-2); margin-bottom: 0.75rem; }
  .ah-name { font-family: var(--serif); font-size: 2.5rem; font-weight: 900; line-height: 1.1; }
  .ah-company { font-family: var(--serif); font-size: 1.1rem; font-style: italic; color: rgba(245,242,235,0.6); margin-top: 0.5rem; }

  .analysis-body { padding: 2.5rem 3rem; }

  .section-block { margin-bottom: 2.5rem; }
  .section-block h3 {
    font-family: var(--serif); font-size: 1.2rem; font-weight: 700;
    color: var(--ink); margin-bottom: 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--accent);
    display: inline-block;
  }
  .section-block p { color: var(--ink-2); font-size: 0.95rem; line-height: 1.8; }
  .section-block ul { color: var(--ink-2); font-size: 0.95rem; line-height: 1.8; padding-left: 1.25rem; }
  .section-block li { margin-bottom: 0.4rem; }

  .quote-block {
    border-left: 4px solid var(--accent);
    padding: 0.75rem 1.25rem;
    background: var(--paper-2);
    border-radius: 0 6px 6px 0;
    margin: 0.75rem 0;
    font-style: italic;
    color: var(--ink-2);
    font-size: 0.92rem;
  }

  .lessons-grid {
    display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem;
  }
  .lesson-card {
    background: var(--paper-2); border: 1px solid var(--border);
    border-radius: 8px; padding: 1rem 1.1rem;
  }
  .lesson-num { font-family: var(--serif); font-size: 1.4rem; font-weight: 900; color: var(--accent); }
  .lesson-text { font-size: 0.85rem; color: var(--ink-2); line-height: 1.6; margin-top: 0.3rem; }

  .back-btn {
    background: none; border: 1px solid var(--border); cursor: pointer;
    font-family: var(--sans); font-size: 0.85rem; color: var(--ink-2);
    padding: 0.5rem 1rem; border-radius: 6px;
    margin-bottom: 1.5rem; display: flex; align-items: center; gap: 0.5rem;
    transition: background 0.15s;
  }
  .back-btn:hover { background: var(--paper-2); }

  /* ===== BLOG PAGE ===== */
  .blog-page { padding: 4rem 5vw; max-width: 1100px; margin: 0 auto; }

  .blog-header { margin-bottom: 2rem; }
  .blog-header h2 {
    font-family: var(--serif); font-size: 2rem; font-weight: 900;
    letter-spacing: -0.5px; margin-bottom: 0.5rem;
  }

  .blog-toolbar {
    display: flex; gap: 0.75rem; flex-wrap: wrap;
    align-items: center; margin-bottom: 2rem;
  }

  .blog-sort select {
    font-family: var(--sans); font-size: 0.85rem;
    padding: 0.5rem 0.9rem;
    border: 1px solid var(--border); border-radius: 6px;
    background: var(--paper); color: var(--ink); cursor: pointer;
    outline: none;
  }

  .blog-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1.25rem;
  }

  .blog-card {
    background: var(--paper); border: 1px solid var(--border);
    border-radius: 10px; overflow: hidden;
    cursor: pointer; transition: transform 0.18s, box-shadow 0.18s;
  }
  .blog-card:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(0,0,0,0.09); }

  .bc-stripe { height: 4px; background: var(--accent); }
  .bc-body { padding: 1.25rem 1.4rem; }
  .bc-industry {
    font-size: 0.65rem; letter-spacing: 0.12em; text-transform: uppercase;
    color: var(--accent); font-weight: 600; margin-bottom: 0.5rem;
  }
  .bc-title { font-family: var(--serif); font-size: 1.05rem; font-weight: 700; line-height: 1.35; margin-bottom: 0.5rem; }
  .bc-meta { font-size: 0.78rem; color: var(--ink-3); display: flex; gap: 1rem; }
  .bc-reads::before { content: '👁 '; }

  /* RESPONSIVE */
  @media (max-width: 768px) {
    .hero { grid-template-columns: 1fr; }
    .hero-right { display: none; }
    .stats-row { grid-template-columns: 1fr; }
    .stat-item { border-right: none; border-bottom: 1px solid var(--border); }
    .lessons-grid { grid-template-columns: 1fr; }
    .analysis-body, .analysis-header { padding: 1.5rem; }
  }

  :root {
    --ink:     #1a1a18;
    --ink-2:   #3d3d38;
    --ink-3:   #8a8a82;
    --paper:   #f5f2eb;
    --paper-2: #ede9df;
    --paper-3: #e3ddd1;
    --accent:  #c84b2f;
    --accent-l:#f0cec6;
    --gold:    #b8952a;
    --border:  rgba(26,26,24,0.11);
    --serif:   'Playfair Display', Georgia, serif;
    --sans:    'DM Sans', system-ui, sans-serif;
    --sidebar: 240px;
    --nav-h:   60px;
  }
  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body { font-family: var(--sans); background: var(--paper); color: var(--ink); line-height: 1.6; }

  /* ── NAV ── */
  nav {
    position: sticky; top: 0; z-index: 200;
    height: var(--nav-h);
    background: var(--paper);
    border-bottom: 1px solid var(--border);
    display: flex; align-items: center;
    padding: 0 2rem; gap: 1.5rem;
  }
  .logo {
    font-family: var(--serif); font-size: 1.25rem; font-weight: 900;
    color: var(--ink); text-decoration: none; letter-spacing: -0.5px;
    white-space: nowrap;
  }
  .logo span { color: var(--accent); }

  /* search trigger in nav */
  .nav-search-btn {
    flex: 1; max-width: 420px;
    display: flex; align-items: center; gap: 0.6rem;
    background: var(--paper-2); border: 1px solid var(--border);
    border-radius: 8px; padding: 0.5rem 1rem;
    cursor: text; color: var(--ink-3); font-size: 0.875rem;
    font-family: var(--sans);
  }
  .nav-search-btn svg { flex-shrink: 0; }

  .nav-right { margin-left: auto; display: flex; gap: 0.5rem; }
  .nav-btn {
    background: none; border: 1px solid var(--border);
    border-radius: 6px; padding: 0.4rem 1rem;
    font-family: var(--sans); font-size: 0.82rem; font-weight: 500;
    cursor: pointer; color: var(--ink-2); transition: background 0.15s;
    text-decoration: none; display: inline-flex; align-items: center;
  }
  .nav-btn:hover { background: var(--paper-2); }
  .nav-btn.home { background: var(--ink); color: var(--paper); border-color: var(--ink); }
  .nav-btn.home:hover { opacity: 0.85; }

  /* ── LAYOUT ── */
  .shell { display: flex; min-height: calc(100vh - var(--nav-h)); }

  /* ── SIDEBAR ── */
  aside {
    width: var(--sidebar); flex-shrink: 0;
    border-right: 1px solid var(--border);
    padding: 2rem 0;
    position: sticky; top: var(--nav-h);
    height: calc(100vh - var(--nav-h));
    overflow-y: auto;
  }
  .aside-section { margin-bottom: 2rem; }
  .aside-label {
    font-size: 0.65rem; letter-spacing: 0.14em; text-transform: uppercase;
    color: var(--ink-3); font-weight: 600;
    padding: 0 1.5rem; margin-bottom: 0.6rem;
  }
  .aside-link {
    display: block; padding: 0.5rem 1.5rem;
    font-size: 0.875rem; color: var(--ink-2);
    cursor: pointer; transition: background 0.12s, color 0.12s;
    text-decoration: none; border-left: 2px solid transparent;
  }
  .aside-link:hover { background: var(--paper-2); color: var(--ink); }
  .aside-link.active {
    background: var(--paper-2); color: var(--ink); font-weight: 500;
    border-left-color: var(--accent);
  }

  /* ── MAIN ── */
  main { flex: 1; padding: 2.5rem 3rem; min-width: 0; }

  .main-header { margin-bottom: 2rem; }
  .main-tag {
    font-size: 0.7rem; letter-spacing: 0.15em; text-transform: uppercase;
    color: var(--accent); font-weight: 600; margin-bottom: 0.4rem;
  }
  .main-title {
    font-family: var(--serif); font-size: 2.6rem; font-weight: 900;
    letter-spacing: -1px; line-height: 1;
  }

  .divider { height: 1px; background: var(--border); margin: 1.5rem 0; }

  /* ── FOUNDER GRID ── */
  .founders-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
  }

  .founder-card {
    border-radius: 10px; overflow: hidden;
    cursor: pointer; position: relative;
    aspect-ratio: 1 / 1;
    transition: transform 0.2s, box-shadow 0.2s;
    text-decoration: none;
  }
  .founder-card:hover { transform: scale(1.03); box-shadow: 0 12px 32px rgba(0,0,0,0.18); }

  .fc-bg {
    width: 100%; height: 100%;
    display: flex; align-items: center; justify-content: center;
    position: relative; overflow: hidden;
  }
  /* logo / initials inside card */
  .fc-initials {
    font-family: var(--serif); font-size: 3rem; font-weight: 900;
    line-height: 1; position: relative; z-index: 1;
  }
  .fc-photo {
    width: 100%; height: 100%; object-fit: cover;
    position: absolute; inset: 0; z-index: 0;
  }

  /* gradient overlay at bottom */
  .fc-overlay {
    position: absolute; inset: 0; z-index: 2;
    background: linear-gradient(to top, rgba(0,0,0,0.72) 0%, rgba(0,0,0,0) 55%);
  }
  .fc-info {
    position: absolute; bottom: 0; left: 0; right: 0; z-index: 3;
    padding: 0.75rem 0.9rem;
  }
  .fc-label {
    font-size: 0.62rem; letter-spacing: 0.1em; text-transform: uppercase;
    font-weight: 600; color: rgba(255,255,255,0.7); margin-bottom: 0.15rem;
  }
  .fc-name {
    font-family: var(--serif); font-size: 1.05rem; font-weight: 700;
    color: #fff; line-height: 1.2;
  }
  .fc-company { font-size: 0.72rem; color: rgba(255,255,255,0.65); margin-top: 0.15rem; }

  /* ── SEARCH OVERLAY ── */
  .search-overlay {
    display: none; position: fixed; inset: 0; z-index: 500;
    background: rgba(20,20,18,0.6); backdrop-filter: blur(4px);
    align-items: flex-start; justify-content: center; padding-top: 80px;
  }
  .search-overlay.open { display: flex; }

  .search-box {
    background: var(--paper); border-radius: 12px;
    width: 100%; max-width: 600px;
    box-shadow: 0 24px 64px rgba(0,0,0,0.25);
    overflow: hidden;
  }
  .search-input-row {
    display: flex; align-items: center; gap: 0.75rem;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border);
  }
  .search-input-row svg { color: var(--ink-3); flex-shrink: 0; }
  .search-real-input {
    flex: 1; border: none; background: none; outline: none;
    font-family: var(--sans); font-size: 1rem; color: var(--ink);
  }
  .search-real-input::placeholder { color: var(--ink-3); }
  .search-close {
    background: none; border: 1px solid var(--border); border-radius: 5px;
    font-size: 0.75rem; padding: 0.2rem 0.5rem; cursor: pointer;
    color: var(--ink-3); font-family: var(--sans);
  }

  .search-results { max-height: 420px; overflow-y: auto; }
  .search-section-label {
    font-size: 0.65rem; letter-spacing: 0.13em; text-transform: uppercase;
    color: var(--ink-3); font-weight: 600;
    padding: 0.75rem 1.25rem 0.4rem;
  }
  .search-item {
    display: flex; align-items: center; gap: 1rem;
    padding: 0.65rem 1.25rem; cursor: pointer;
    transition: background 0.12s; text-decoration: none;
  }
  .search-item:hover { background: var(--paper-2); }
  .si-thumb {
    width: 44px; height: 44px; border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0; font-family: var(--serif); font-weight: 900;
    font-size: 1rem; color: #fff;
  }
  .si-info { flex: 1; min-width: 0; }
  .si-name { font-size: 0.9rem; font-weight: 500; color: var(--ink); }
  .si-meta { font-size: 0.78rem; color: var(--ink-3); }
  .si-tag {
    font-size: 0.65rem; letter-spacing: 0.08em; text-transform: uppercase;
    color: var(--accent); border: 1px solid var(--accent-l);
    border-radius: 4px; padding: 0.15rem 0.45rem;
    white-space: nowrap; font-weight: 600;
  }

  .search-industry-grid {
    display: grid; grid-template-columns: repeat(4,1fr); gap: 0.5rem;
    padding: 0.75rem 1.25rem 1.25rem;
  }
  .ind-chip {
    background: var(--paper-2); border: 1px solid var(--border);
    border-radius: 6px; padding: 0.5rem 0.6rem;
    font-size: 0.8rem; font-weight: 500; color: var(--ink-2);
    cursor: pointer; text-align: center;
    transition: background 0.12s, color 0.12s;
    font-family: var(--sans);
  }
  .ind-chip:hover { background: var(--ink); color: var(--paper); }

  /* ── EMPTY STATE ── */
  .empty-state {
    grid-column: 1/-1; text-align: center; padding: 4rem 2rem;
    color: var(--ink-3);
  }
  .empty-state svg { margin-bottom: 1rem; opacity: 0.3; }
  .empty-state p { font-size: 0.9rem; }

  /* ── HOW TO ADD ── */
  .how-to-banner {
    margin-top: 3rem;
    background: var(--ink); color: var(--paper);
    border-radius: 12px; padding: 1.75rem 2rem;
    display: flex; gap: 2rem; align-items: flex-start;
  }
  .how-to-banner h3 {
    font-family: var(--serif); font-size: 1.15rem; font-weight: 700;
    margin-bottom: 0.6rem;
  }
  .how-to-banner ol { padding-left: 1.2rem; font-size: 0.875rem; line-height: 1.9; color: rgba(245,242,235,0.8); }
  .how-to-banner ol li strong { color: var(--accent-l); }
  .how-to-banner code {
    font-size: 0.8rem; background: rgba(255,255,255,0.1);
    border-radius: 4px; padding: 0.1rem 0.4rem;
    font-family: 'Courier New', monospace; color: #ffd8a8;
  }
  .ht-icon { font-size: 2.5rem; flex-shrink: 0; opacity: 0.6; }

  /* responsive */
  @media (max-width: 700px) {
    aside { display: none; }
    main { padding: 1.5rem; }
    .founders-grid { grid-template-columns: repeat(2,1fr); }
    .search-industry-grid { grid-template-columns: repeat(2,1fr); }
    .how-to-banner { flex-direction: column; gap: 1rem; }
  }