@font-face {
    font-family: 'Inter';
    src: url('fonts/inter-v20-latin-regular.woff2') format('woff2');
    font-weight: 400;
    font-style: normal;
    font-display: optional;
  }
  @font-face {
    font-family: 'Inter';
    src: url('fonts/inter-v20-latin-600.woff2') format('woff2');
    font-weight: 600;
    font-style: normal;
    font-display: optional;
  }
  @font-face {
    font-family: 'Playfair Display';
    src: url('fonts/playfair-display-v40-latin-700.woff2') format('woff2');
    font-weight: 700;
    font-style: normal;
    font-display: optional;
  }

  :root {
    --bg: #f3f3f7;
    --bg2: #ebebee;
    --bg3: #e4e4e4;
    --accent: #0066cc;
    --accent2: #1a7add;
    --text: #191a1f;
    --muted: #66656a;
    --border: rgba(1,1,8,0.1);
    --border-accent: rgba(0,102,204,0.3);
    --mono: 'Inter', sans-serif;
    --sans: 'Playfair Display', serif;
  }

  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--mono);
    line-height: 1.7;
    overflow-x: hidden;
    font-size: 1rem;
    -webkit-font-smoothing: antialiased;
  }

  .skip-link {
    position: fixed; top: 1rem; left: 1rem; z-index: 200;
    transform: translateY(-160%);
    padding: 0.65rem 1rem;
    background: var(--accent); color: #ffffff;
    font-size: 0.78rem; font-weight: 600;
    text-decoration: none; transition: transform 0.2s;
  }
  .skip-link:focus { transform: translateY(0); }

  body::before {
    content: '';
    position: fixed; inset: 0;
    background-image:
      linear-gradient(rgba(0,102,204,0.05) 1px, transparent 1px),
      linear-gradient(90deg, rgba(0,102,204,0.05) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none; z-index: 0;
  }

  /* NAV */
  nav {
    position: fixed; top: 0; left: 0; right: 0;
    z-index: 100;
    display: flex; align-items: center; justify-content: space-between;
    padding: 1.2rem 3rem;
    background: rgba(248,248,250,0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
  }
  .nav-logo {
    font-family: var(--sans); font-weight: 800; font-size: 1.05rem;
    letter-spacing: 0.05em; color: var(--text); text-decoration: none; flex-shrink: 0;
  }
  .nav-logo span { color: var(--accent); }
  .nav-links { display: flex; gap: 1.8rem; list-style: none; }
  .nav-links a {
    color: var(--muted); text-decoration: none;
    font-size: 0.7rem; letter-spacing: 0.12em;
    text-transform: uppercase; transition: color 0.2s; white-space: nowrap;
  }
  .nav-links a:hover,
  .nav-links a[aria-current="page"] { color: var(--accent); }
  a:focus-visible, button:focus-visible {
    outline: 3px solid #0066cc; outline-offset: 4px; border-radius: 8px;
  }
  .nav-cta {
    background: var(--accent) !important; color: #ffffff !important;
    padding: 0.5rem 1.1rem !important; border-radius: 4px;
    transition: opacity 0.2s, transform 0.15s !important; white-space: nowrap;
  }
  .nav-cta:hover { opacity: 0.88 !important; transform: translateY(-1px); }

  section { position: relative; z-index: 1; }

  /* HERO */
  #hero {
    min-height: 100vh;
    display: flex; align-items: center;
    padding: 8rem 3rem 6rem;
    max-width: 1100px; margin: 0 auto;
  }
  .hero-inner {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 4rem; align-items: center; width: 100%;
  }
  .hero-tag {
    font-size: 0.68rem; letter-spacing: 0.22em;
    text-transform: uppercase; color: var(--accent);
    margin-bottom: 1.5rem;
    display: flex; align-items: center; gap: 0.8rem;
  }
  .hero-tag::before {
    content: ''; display: block; width: 24px; height: 1px; background: var(--accent);
  }
  h1 {
    font-family: var(--sans);
    font-size: clamp(2.2rem, 4.5vw, 3.6rem);
    font-weight: 800; line-height: 1.05;
    letter-spacing: -0.02em; color: var(--text); margin-bottom: 1.5rem;
  }
  h1 em { font-style: normal; color: var(--accent); }
  .hero-desc {
    font-size: 0.9rem; color: var(--muted);
    max-width: 44ch; margin-bottom: 2rem; line-height: 1.8;
  }
  .hero-ctas { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
  .btn-primary {
    display: inline-flex; align-items: center; gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--accent); color: #ffffff;
    font-family: var(--mono); font-size: 0.8rem; font-weight: 500;
    text-decoration: none; letter-spacing: 0.04em;
    transition: opacity 0.2s, transform 0.15s;
  }
  .btn-primary:hover { opacity: 0.85; transform: translateY(-1px); }
  .btn-outline {
    display: inline-flex; align-items: center; gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: 1px solid var(--border-accent); color: var(--accent);
    font-family: var(--mono); font-size: 0.8rem;
    text-decoration: none; letter-spacing: 0.04em;
    transition: background 0.2s, transform 0.15s;
  }
  .btn-outline:hover { background: rgba(0,102,204,0.07); transform: translateY(-1px); }
  .hero-topics {
    font-size: 0.72rem; color: var(--muted); letter-spacing: 0.04em; line-height: 1.9;
  }

  /* STATS BAR */
  .stats-bar {
    background: var(--bg2);
    border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
    padding: 2rem 3rem; max-width: 1100px; margin: 0 auto;
  }
  .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; }
  .stat { text-align: center; }
  .stat-num {
    font-family: var(--sans); font-size: 2rem; font-weight: 800;
    color: var(--accent); line-height: 1; margin-bottom: 0.4rem;
  }
  .stat-label { font-size: 0.68rem; color: var(--muted); letter-spacing: 0.12em; text-transform: uppercase; }

  /* SECTION COMMON */
  .section-tag {
    font-size: 0.7rem; letter-spacing: 0.2em; text-transform: uppercase;
    color: var(--accent); margin-bottom: 1rem;
    display: flex; align-items: center; gap: 0.8rem;
  }
  .section-tag::before {
    content: ''; display: block; width: 24px; height: 1px; background: var(--accent);
  }
  h2 {
    font-family: var(--sans); font-size: clamp(1.8rem, 3vw, 2.6rem);
    font-weight: 700; line-height: 1.15; margin-bottom: 1rem; letter-spacing: -0.02em;
  }
  .section-intro {
    font-size: 0.88rem; color: var(--muted); line-height: 1.9; max-width: 68ch; margin-bottom: 3rem;
  }

  /* BUILT FOR */
  #built-for { max-width: 1100px; margin: 0 auto; padding: 5rem 3rem; border-bottom: 1px solid var(--border); }
  .built-for-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; margin-top: 2.5rem; }
  .built-for-card { background: var(--bg); border: 1px solid var(--border); padding: 1.8rem; }
  .built-for-card h3 {
    font-family: var(--sans); font-size: 0.95rem; font-weight: 600; color: var(--text); margin-bottom: 0.7rem;
  }
  .built-for-card p { font-size: 0.78rem; color: var(--muted); line-height: 1.8; }

  /* CHECKLISTS */
  #checklists {
    background: var(--bg2);
    border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
    padding: 7rem 3rem;
  }
  .checklists-inner { max-width: 1100px; margin: 0 auto; }
  .checklists-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; margin-top: 3rem; }
  .checklist-card {
    background: var(--bg); border: 1px solid var(--border); padding: 2rem;
    display: flex; flex-direction: column;
    transition: border-color 0.25s, transform 0.2s;
  }
  .checklist-card:hover { border-color: var(--border-accent); transform: translateY(-2px); }
  .checklist-card h3 {
    font-family: var(--sans); font-size: 1.05rem; font-weight: 600;
    color: var(--text); margin-bottom: 0.8rem; line-height: 1.3;
  }
  .checklist-card p { font-size: 0.78rem; color: var(--muted); line-height: 1.8; flex: 1; margin-bottom: 1.5rem; }
  .checklist-card a {
    color: var(--accent); font-size: 0.72rem; letter-spacing: 0.08em; text-decoration: none; align-self: flex-start;
  }
  .checklist-card a:hover { text-decoration: underline; }

  /* FEATURED TOOLS */
  #tools { max-width: 1100px; margin: 0 auto; padding: 7rem 3rem; }

  #work-with-me { max-width: 1100px; margin: 0 auto; padding: 6rem 3rem; }
  .workwith-card { max-width: 720px; margin: 0 auto; text-align: center; background: #eef4fc; border: 1px solid var(--border-accent); padding: 2.6rem 2rem; }
  .workwith-card h2 { font-family: var(--sans); font-size: clamp(1.4rem, 3vw, 1.9rem); font-weight: 800; margin-bottom: 0.8rem; }
  .workwith-card p { color: var(--muted); font-size: 0.9rem; line-height: 1.8; max-width: 60ch; margin: 0 auto 1.6rem; }
  .workwith-card .btn-primary { display: inline-block; }
  .workwith-links { margin-top: 1.2rem; margin-bottom: 0; font-size: 0.8rem; color: var(--muted); }
  .workwith-links a { color: var(--accent); text-decoration: none; }
  .workwith-links a:hover { text-decoration: underline; }
  .tools-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; margin-top: 3rem; }
  .tool-card {
    background: var(--bg2); border: 1px solid var(--border); padding: 1.8rem;
    transition: border-color 0.25s; text-decoration: none; display: block; color: inherit;
  }
  .tool-card:hover { border-color: var(--border-accent); }
  .tool-header { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 0.8rem; }
  .tool-name { font-family: var(--sans); font-size: 0.95rem; font-weight: 600; color: var(--text); }
  .tool-lang { font-size: 0.65rem; padding: 0.2rem 0.5rem; border: 1px solid var(--border); color: var(--muted); letter-spacing: 0.06em; }
  .tool-desc { font-size: 0.78rem; color: var(--muted); line-height: 1.8; margin-bottom: 0.9rem; }
  .tool-use-case {
    font-size: 0.7rem; color: var(--muted);
    border-left: 2px solid var(--border-accent); padding-left: 0.7rem;
    line-height: 1.7; margin-bottom: 1rem; font-style: italic;
  }
  .tool-link { font-size: 0.72rem; color: var(--accent); letter-spacing: 0.08em; }

  /* PRODUCT LAB */
  #product-lab {
    background: var(--bg2);
    border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
    padding: 7rem 3rem;
  }
  .product-lab-inner { max-width: 1100px; margin: 0 auto; }
  .product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; margin-top: 3rem; }
  .product-card {
    background: var(--bg); border: 1px solid var(--border); padding: 2rem;
    display: flex; flex-direction: column;
  }
  .product-card h3 {
    font-family: var(--sans); font-size: 1.05rem; font-weight: 600;
    color: var(--text); margin-bottom: 0.5rem; line-height: 1.3;
  }
  .status-pill {
    display: inline-block; margin: 0 0 1rem;
    padding: 0.25rem 0.6rem;
    border: 1px solid var(--border-accent); color: var(--accent);
    font-size: 0.65rem; letter-spacing: 0.08em; text-transform: uppercase;
  }
  .product-card p { font-size: 0.78rem; color: var(--muted); line-height: 1.8; flex: 1; margin-bottom: 1.5rem; }
  .product-card a {
    color: var(--accent); font-size: 0.72rem; letter-spacing: 0.08em; text-decoration: none; align-self: flex-start;
  }
  .product-card a:hover { text-decoration: underline; }

  /* SECURITY AREAS */
  #categories { max-width: 1100px; margin: 0 auto; padding: 7rem 3rem; }
  .categories-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; margin-top: 3rem; }
  .category-card {
    background: var(--bg2); border: 1px solid var(--border); padding: 2rem;
    transition: border-color 0.25s, transform 0.2s; cursor: default;
  }
  .category-card:hover { border-color: var(--border-accent); transform: translateY(-2px); }
  .card-icon { font-size: 1.5rem; margin-bottom: 1.2rem; filter: grayscale(0.3); }
  .card-title { font-family: var(--sans); font-size: 1rem; font-weight: 600; margin-bottom: 0.75rem; color: var(--text); }
  .card-desc { font-size: 0.78rem; color: var(--muted); line-height: 1.8; }

  /* ABOUT */
  #about {
    background: var(--bg2);
    border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
    padding: 7rem 3rem;
  }
  .about-inner { max-width: 1100px; margin: 0 auto; }
  .about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: start; }
  .about-text p { color: var(--muted); font-size: 0.88rem; line-height: 1.9; margin-bottom: 1.2rem; }
  .about-text p strong { color: var(--text); font-weight: 500; }
  .principles-list { margin-top: 2rem; display: flex; flex-wrap: wrap; gap: 0.5rem; }
  .principle {
    font-size: 0.7rem; padding: 0.35rem 0.75rem;
    border: 1px solid var(--border); color: var(--muted); letter-spacing: 0.06em;
  }
  .skills-panel { display: flex; flex-direction: column; gap: 1rem; }
  .skill-group-label {
    font-size: 0.68rem; letter-spacing: 0.15em; text-transform: uppercase;
    color: var(--muted); margin-top: 0.5rem; margin-bottom: 0.25rem;
  }
  .skill-list { display: flex; flex-wrap: wrap; gap: 0.4rem; }
  .skill-badge {
    font-size: 0.7rem; padding: 0.3rem 0.65rem;
    background: var(--bg3); border: 1px solid var(--border); color: var(--text); letter-spacing: 0.04em;
  }
  .skill-badge.accent { border-color: var(--border-accent); color: #00478f; background: #eef4fc; }

  /* LATEST POSTS */
  #latest-posts { max-width: 1100px; margin: 0 auto; padding: 7rem 3rem; }
  .posts-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; margin-top: 3rem; }
  .post-snippet {
    background: var(--bg2); border: 1px solid var(--border); padding: 1.8rem;
    text-decoration: none; color: inherit; display: block;
    transition: border-color 0.25s, transform 0.2s;
  }
  .post-snippet:hover { border-color: var(--border-accent); transform: translateY(-2px); }
  .post-snippet-date {
    font-size: 0.65rem; color: var(--muted); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 0.7rem;
  }
  .post-snippet h3 {
    font-family: var(--sans); font-size: 0.95rem; font-weight: 600;
    color: var(--text); line-height: 1.3; margin-bottom: 0.7rem;
  }
  .post-snippet p { font-size: 0.75rem; color: var(--muted); line-height: 1.8; margin-bottom: 1rem; }
  .post-snippet-link { font-size: 0.7rem; color: var(--accent); letter-spacing: 0.08em; }
  .posts-row-footer { margin-top: 2rem; text-align: center; }
  .posts-row-footer a { font-size: 0.78rem; color: var(--accent); letter-spacing: 0.08em; text-decoration: none; }
  .posts-row-footer a:hover { text-decoration: underline; }

  /* UPDATES */
  #updates {
    border-top: 1px solid var(--border); padding: 7rem 3rem;
    text-align: center; background: var(--bg2);
  }
  .updates-inner { max-width: 560px; margin: 0 auto; }
  .updates-sub { font-size: 0.85rem; color: var(--muted); margin-bottom: 2.5rem; line-height: 1.8; }
  .updates-form { display: flex; flex-direction: column; gap: 0.85rem; margin-bottom: 1rem; text-align: left; }
  .updates-form input,
  .updates-form select {
    width: 100%; padding: 0.7rem 1rem;
    background: var(--bg); border: 1px solid var(--border);
    color: var(--text); font-family: var(--mono); font-size: 0.82rem;
    outline: none; transition: border-color 0.2s;
    -webkit-appearance: none; appearance: none;
  }
  .updates-form input:focus,
  .updates-form select:focus { border-color: var(--border-accent); }
  .updates-form button {
    width: 100%; padding: 0.75rem;
    background: var(--accent); color: #ffffff;
    font-family: var(--mono); font-size: 0.82rem; font-weight: 600;
    letter-spacing: 0.05em; border: none; cursor: pointer;
    transition: opacity 0.2s, transform 0.15s;
  }
  .updates-form button:hover { opacity: 0.88; transform: translateY(-1px); }
  .updates-status { font-size: 0.85rem; line-height: 1.7; margin-bottom: 1rem; color: var(--accent); font-weight: 600; }
  .updates-status.is-error { color: #c0392b; }
  .updates-note { font-size: 0.7rem; color: var(--muted); line-height: 1.7; margin-bottom: 2.5rem; }
  .social-links {
    display: flex; justify-content: center; flex-wrap: wrap; gap: 0.8rem; margin-top: 2.5rem;
  }
  .social-link {
    display: inline-flex; align-items: center; gap: 0.5rem;
    padding: 0.6rem 1.2rem; border: 1px solid var(--border);
    color: var(--muted); font-size: 0.75rem; text-decoration: none;
    letter-spacing: 0.08em; transition: border-color 0.2s, color 0.2s;
  }
  .social-link:hover { border-color: var(--border-accent); color: var(--accent); }

  /* FOOTER */
  .divider { height: 1px; background: var(--border); max-width: 1100px; margin: 0 auto; }
  footer {
    border-top: 1px solid var(--border); padding: 2rem 3rem;
    display: flex; justify-content: space-between; align-items: center;
    max-width: 1100px; margin: 0 auto; font-size: 0.72rem; color: var(--muted);
  }
  footer a { color: var(--muted); text-decoration: none; }
  footer a:hover { color: var(--accent); }

  ::-webkit-scrollbar { width: 4px; }
  ::-webkit-scrollbar-track { background: var(--bg); }
  ::-webkit-scrollbar-thumb { background: rgba(0,102,204,0.3); border-radius: 2px; }

  @media (max-width: 768px) {
    nav { padding: 1rem 1.5rem; }
    .nav-links { display: none; }
    #hero { padding: 8rem 1.5rem 5rem; }
    #built-for, #tools, #categories, #latest-posts { padding-left: 1.5rem; padding-right: 1.5rem; }
    .about-inner { padding: 0 1.5rem; }
    .stats-bar { padding: 1.5rem; }
    #checklists, #product-lab, #about, #work-with-me { padding: 4rem 1.5rem; }
    #updates { padding: 4rem 1.5rem; }
    .hero-inner, .about-grid { grid-template-columns: 1fr; gap: 3rem; }
    .hero-image-col { order: -1; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .checklists-grid, .tools-grid, .product-grid, .categories-grid, .built-for-grid, .posts-row { grid-template-columns: 1fr; }
    footer { padding: 2rem 1.5rem; flex-direction: column; gap: 0.5rem; text-align: center; }
  }

  @media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
      animation-duration: 0.01ms !important;
      animation-iteration-count: 1 !important;
      scroll-behavior: auto !important;
      transition-duration: 0.01ms !important;
    }
  }

/* Utility classes — converted from inline style attributes to satisfy strict CSP (style-src 'self'). */
.u-flex-center{display:flex;align-items:center;justify-content:center;}
.u-hero-pic{display:block;width:100%;max-width:480px;aspect-ratio:768/512;}
.u-img-block{width:100%;height:auto;display:block;}
.u-jc-center{justify-content:center;}
.u-hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0;}