:root{
    --ink:#10151F;
    --ink-soft:#4A5160;
    --paper:#F2F1EA;
    --paper-dim:#E9E7DC;
    --line:#D7D3C7;
    --navy-line:#2A3648;
    --verify:#1E7A5C;
    --verify-bg:#E4EFE9;
    --flag:#B54708;
    --flag-bg:#F5E9DE;
    --display:'Fraunces', serif;
    --body:'IBM Plex Sans', sans-serif;
    --mono:'IBM Plex Mono', monospace;
  }
  *{box-sizing:border-box; margin:0; padding:0;}
  html{scroll-behavior:smooth;}
  body{
    background:var(--paper);
    color:var(--ink);
    font-family:var(--body);
    line-height:1.5;
    -webkit-font-smoothing:antialiased;
  }
  @media (prefers-reduced-motion: reduce){
    *{animation-duration:0.01ms !important; transition-duration:0.01ms !important;}
  }
  a{color:inherit;}
  .wrap{max-width:1120px; margin:0 auto; padding:0 32px;}
  .eyebrow{
    font-family:var(--mono);
    font-size:12px;
    letter-spacing:0.14em;
    text-transform:uppercase;
    color:var(--ink-soft);
  }

  /* ---------- NAV ---------- */
  nav{
    position:sticky; top:0; z-index:50;
    background:rgba(242,241,234,0.92);
    backdrop-filter:blur(6px);
    border-bottom:1px solid var(--line);
  }
  .nav-inner{
    display:flex; align-items:center; justify-content:space-between;
    padding:18px 32px;
    max-width:1120px; margin:0 auto;
  }
  .wordmark{
    font-family:var(--display);
    font-weight:600;
    font-size:19px;
    letter-spacing:-0.01em;
  }
  .wordmark span{color:var(--verify);}
  .nav-links{display:flex; gap:28px; list-style:none; align-items:center;}
  .nav-links a{
    font-family:var(--mono);
    font-size:13px;
    text-decoration:none;
    color:var(--ink-soft);
    transition:color 0.15s ease;
  }
  .nav-links a:hover, .nav-links a:focus-visible{color:var(--ink);}
  .nav-cta{
    font-family:var(--mono);
    font-size:13px;
    background:var(--ink);
    color:var(--paper) !important;
    padding:9px 16px;
    border-radius:2px;
    text-decoration:none;
  }
  .nav-cta:hover{background:var(--verify);}
  .nav-toggle{display:none;}

  /* ---------- HERO ---------- */
  .hero{
    position:relative;
    padding:96px 0 72px;
    background:var(--ink);
    color:var(--paper);
    overflow:hidden;
    border-bottom:1px solid var(--navy-line);
  }
  .hero::before{
    content:"";
    position:absolute; inset:0;
    background:
      radial-gradient(560px 360px at 82% 20%, rgba(30,122,92,0.16), transparent 60%),
      radial-gradient(480px 320px at 15% 85%, rgba(181,71,7,0.10), transparent 60%);
    animation:driftBg 16s ease-in-out infinite alternate;
    pointer-events:none;
  }
  @keyframes driftBg{
    0%{ transform:translate(0,0) scale(1); }
    100%{ transform:translate(-2%,2%) scale(1.06); }
  }
  .hero-watermark{
    position:absolute;
    right:-40px; bottom:-60px;
    font-family:var(--display);
    font-weight:600;
    font-size:280px;
    color:#FFFFFF;
    opacity:0.035;
    letter-spacing:-0.02em;
    line-height:1;
    pointer-events:none;
    animation:floatSlow 10s ease-in-out infinite alternate;
  }
  @keyframes floatSlow{
    0%{ transform:translateY(0); }
    100%{ transform:translateY(-14px); }
  }
  .hero-grid{
    position:relative; z-index:1;
    display:grid;
    grid-template-columns:1.1fr 0.9fr;
    gap:64px;
    align-items:center;
  }
  .hero-copy > *{
    opacity:0; transform:translateY(16px);
    animation:heroUp 0.7s ease forwards;
  }
  .hero-copy .eyebrow{animation-delay:0.05s;}
  .hero-copy h1{animation-delay:0.15s;}
  .hero-copy .lede{animation-delay:0.28s;}
  .hero-copy .hero-quote{animation-delay:0.35s;}
  .hero-copy .byline{animation-delay:0.42s;}
  .hero-copy .cta-row{animation-delay:0.5s;}
  @keyframes heroUp{
    to{opacity:1; transform:translateY(0);}
  }
  .hero .eyebrow{color:#9BA3B4;}
  .hero h1{
    font-family:var(--display);
    font-weight:500;
    font-size:clamp(34px, 4.4vw, 54px);
    line-height:1.06;
    letter-spacing:-0.01em;
    margin:18px 0 22px;
    color:var(--paper);
  }
  .hero h1 em{font-style:italic; font-weight:400; color:#E8A468;}
  .hero p.lede{
    font-size:17px;
    color:#C7CCD6;
    max-width:46ch;
    margin-bottom:30px;
  }
  .byline{
    font-family:var(--mono);
    font-size:13px;
    color:#9BA3B4;
    margin-bottom:30px;
  }
  .byline strong{color:var(--paper); font-weight:500;}
  .hero-quote{
    font-family:var(--display);
    font-style:italic;
    font-size:19px;
    line-height:1.4;
    margin-bottom:26px;
    color:#DCE0E8;
    border-left:2px solid #E8A468;
    padding-left:16px;
  }
  .hero-quote em{color:#E8A468; font-style:italic;}
  .hero .btn-ghost{border-color:#4A5164; color:var(--paper);}
  .hero .btn-ghost:hover{background:var(--paper); color:var(--ink);}
  .hero .btn-primary{background:var(--verify); color:var(--ink);}
  .hero .btn-primary:hover{background:#6FD6AB;}
  .cta-row{display:flex; gap:14px; flex-wrap:wrap;}
  .btn{
    font-family:var(--mono);
    font-size:13.5px;
    padding:13px 22px;
    border-radius:2px;
    text-decoration:none;
    display:inline-flex;
    align-items:center;
    gap:8px;
    transition:transform 0.15s ease, background 0.15s ease;
  }
  .btn-primary{background:var(--ink); color:var(--paper);}
  .btn-primary:hover{background:var(--verify); transform:translateY(-1px);}
  .btn-ghost{border:1px solid var(--ink); color:var(--ink);}
  .btn-ghost:hover{background:var(--ink); color:var(--paper);}

  /* ---------- COMPARISON PANEL (signature element, animated) ---------- */
  .compare{
    position:relative;
    background:#0B0F17;
    border:1px solid var(--navy-line);
    border-radius:4px;
    padding:20px;
    font-family:var(--mono);
    font-size:12.5px;
    box-shadow:0 30px 70px -24px rgba(0,0,0,0.55);
    opacity:0; transform:translateY(16px) scale(0.98);
    animation:heroUp 0.7s ease forwards;
    animation-delay:0.32s;
    overflow:hidden;
  }
  .scan-beam{
    position:absolute;
    top:0; left:0;
    width:2px; height:100%;
    background:linear-gradient(180deg, transparent, rgba(111,214,171,0.85), transparent);
    box-shadow:0 0 16px 2px rgba(111,214,171,0.5);
    animation:scanAcross 4.5s ease-in-out infinite;
    z-index:2;
  }
  @keyframes scanAcross{
    0%{ left:0%; opacity:0; }
    8%{ opacity:1; }
    48%{ left:100%; opacity:1; }
    56%{ opacity:0; }
    100%{ left:100%; opacity:0; }
  }
  .compare-row{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:14px;
  }
  .compare-card{
    border-radius:3px;
    padding:16px 14px;
    min-height:200px;
    display:flex;
    flex-direction:column;
    gap:10px;
  }
  .compare-card.unverified{
    background:#241812;
    border:1px solid #3D2A1C;
  }
  .compare-card.verified{
    background:#122019;
    border:1px solid #1E3A2C;
  }
  .compare-label{
    font-size:10.5px;
    letter-spacing:0.08em;
    text-transform:uppercase;
    display:flex; align-items:center; gap:6px;
  }
  .unverified .compare-label{color:#E8A468;}
  .verified .compare-label{color:#6FD6AB;}
  .blob-line{
    height:8px; border-radius:2px;
    background:#4A3A2C;
    opacity:0.7;
    animation:pulseFlag 2.4s ease-in-out infinite;
  }
  .blob-line:nth-child(2){animation-delay:0.1s;}
  .blob-line:nth-child(3){animation-delay:0.25s;}
  .blob-line:nth-child(4){animation-delay:0.4s;}
  .blob-line:nth-child(5){animation-delay:0.55s;}
  @keyframes pulseFlag{
    0%, 100%{ opacity:0.55; }
    50%{ opacity:0.9; }
  }
  .blob-line.short{width:65%;}
  .blob-line.shorter{width:40%;}
  .code-line{
    color:#9FE8C6; font-size:11.5px; line-height:1.7; white-space:pre;
    overflow:hidden; white-space:nowrap;
    width:0;
    animation:typeIn 0.5s steps(30, end) forwards;
    animation-delay:calc(var(--i, 0) * 0.35s + 0.6s);
  }
  .compare-card.verified:hover .code-line, .compare-card.verified .code-line{
    animation-iteration-count:1;
  }
  @keyframes typeIn{
    from{ width:0; }
    to{ width:100%; }
  }
  .code-line .k{color:#6FD6AB;}
  .code-line .s{color:#E8C88A;}
  .code-line .c{color:#5A7A6C;}
  .compare-label .dot{
    display:inline-block; width:6px; height:6px; border-radius:50%;
    background:currentColor;
    animation:blink 1.6s ease-in-out infinite;
  }
  @keyframes blink{
    0%, 100%{ opacity:1; }
    50%{ opacity:0.25; }
  }
  .compare-foot{
    text-align:center;
    font-size:11px;
    color:#7A7568;
    margin-top:14px;
    letter-spacing:0.04em;
  }

  /* ---------- STAT STRIP ---------- */
  .stats{
    border-bottom:1px solid var(--line);
    background:var(--paper-dim);
  }
  .stats-grid{
    display:grid;
    grid-template-columns:repeat(5, 1fr);
    padding:0;
  }
  .stat-cell{
    padding:26px 20px;
    border-left:1px solid var(--line);
    text-align:center;
  }
  .stat-cell:first-child{border-left:none;}
  .stat-num{
    font-family:var(--mono);
    font-weight:500;
    font-size:clamp(20px,2.4vw,28px);
    color:var(--ink);
  }
  .stat-label{
    font-size:11.5px;
    color:var(--ink-soft);
    margin-top:6px;
    line-height:1.4;
  }

  /* ---------- SECTION SCAFFOLD ---------- */
  section{padding:88px 0;}
  section.tight{padding:72px 0;}
  .section-head{margin-bottom:48px; max-width:62ch;}
  .section-head h2{
    font-family:var(--display);
    font-weight:500;
    font-size:clamp(26px,3vw,36px);
    letter-spacing:-0.01em;
    margin-top:10px;
  }
  .section-head p{color:var(--ink-soft); margin-top:14px; font-size:16px;}
  .section-head h2 em{font-style:italic; font-weight:400; color:var(--flag);}
  .divider{border:none; border-top:1px solid var(--line);}

  /* ---------- ABOUT / PARTS ---------- */
  .parts{
    display:grid;
    grid-template-columns:repeat(4, 1fr);
    gap:1px;
    background:var(--line);
    border:1px solid var(--line);
  }
  .field-notes{
    display:grid;
    grid-template-columns:repeat(5, 1fr);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    margin:40px 0 56px;
  }
  .field-note{
    padding:20px 18px;
    border-left:1px solid var(--line);
  }
  .field-note:first-child{border-left:none;}
  .field-note-label{
    font-family:var(--mono);
    font-size:11px;
    letter-spacing:0.06em;
    text-transform:uppercase;
    color:var(--ink-soft);
    margin-bottom:6px;
  }
  .field-note-value{
    font-family:var(--display);
    font-size:16.5px;
    font-weight:500;
    line-height:1.3;
  }
  .book-story{max-width:66ch; margin-bottom:8px;}
  .book-story p{color:var(--ink-soft); font-size:16px; margin-bottom:14px;}
  .book-story strong{color:var(--ink); font-weight:500;}
  .part-card{
    background:var(--paper);
    padding:28px 22px;
  }
  .part-num{
    font-family:var(--mono);
    font-size:12px;
    color:var(--verify);
  }
  .part-name{
    font-family:var(--display);
    font-size:20px;
    font-weight:500;
    margin:10px 0 12px;
  }
  .part-chapters{
    list-style:none;
    font-size:13.5px;
    color:var(--ink-soft);
  }
  .part-chapters li{
    padding:6px 0;
    border-top:1px solid var(--line);
  }
  .part-chapters li:first-child{border-top:none;}

  /* ---------- FRAMEWORK ---------- */
  .framework{
    background:var(--ink);
    color:var(--paper);
  }
  .framework .eyebrow{color:#8B93A3;}
  .framework .section-head h2{color:var(--paper);}
  .framework .section-head p{color:#B7BDC9;}
  .fw-grid{
    display:grid;
    grid-template-columns:0.95fr 1.05fr;
    gap:56px;
    align-items:start;
  }
  .fw-copy p{color:#C7CCD6; font-size:15.5px; margin-bottom:16px; max-width:48ch;}
  .fw-copy strong{color:var(--paper); font-weight:500;}
  .code-block{
    background:#0B0F17;
    border:1px solid var(--navy-line);
    border-radius:4px;
    padding:24px;
    font-family:var(--mono);
    font-size:13px;
    line-height:1.85;
    overflow-x:auto;
  }
  .code-block .k{color:#7FB8E0;}
  .code-block .fn{color:#6FD6AB;}
  .code-block .s{color:#E8C88A;}
  .code-block .c{color:#5A6376;}
  .code-block .tag{color:#D89BD8;}

  /* ---------- FOREWORD QUOTE ---------- */
  .foreword{
    background:var(--paper-dim);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
  }
  .foreword blockquote{
    font-family:var(--display);
    font-style:italic;
    font-weight:400;
    font-size:clamp(22px,2.6vw,30px);
    line-height:1.45;
    max-width:52ch;
    color:var(--ink);
  }
  .foreword cite{
    display:block;
    font-family:var(--mono);
    font-style:normal;
    font-size:13px;
    color:var(--ink-soft);
    margin-top:24px;
  }

  /* ---------- AUTHOR ---------- */
  .author-grid{
    display:grid;
    grid-template-columns:220px 1fr;
    gap:48px;
    align-items:start;
  }
  .author-photo{
    width:220px;
    border-radius:4px;
    overflow:hidden;
    box-shadow:0 24px 60px -18px rgba(16,21,31,0.35);
  }
  .author-photo img{
    width:100%; display:block;
    filter:grayscale(100%) contrast(1.05);
  }
  .author-copy p{color:var(--ink-soft); font-size:15.5px; margin-bottom:14px; max-width:60ch;}
  .cred-list{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:10px 24px;
    margin-top:22px;
    font-family:var(--mono);
    font-size:13px;
    color:var(--ink-soft);
  }
  .cred-list li{padding-left:16px; position:relative;}
  .cred-list li::before{
    content:"§";
    position:absolute; left:0; color:var(--verify);
  }

  /* ---------- FAQ ---------- */
  .faq-item{
    border-top:1px solid var(--line);
    padding:22px 0;
  }
  .faq-item:last-child{border-bottom:1px solid var(--line);}
  .faq-q{
    display:flex; justify-content:space-between; align-items:center;
    cursor:pointer;
    font-family:var(--body);
    font-weight:500;
    font-size:16px;
    list-style:none;
  }
  .faq-q::-webkit-details-marker{display:none;}
  .faq-q .plus{
    font-family:var(--mono);
    color:var(--verify);
    font-size:18px;
    transition:transform 0.2s ease;
  }
  details[open] .plus{transform:rotate(45deg);}
  .faq-a{
    color:var(--ink-soft);
    font-size:15px;
    max-width:64ch;
    margin-top:12px;
    line-height:1.6;
  }

  /* ---------- CTA BAND ---------- */
  .cta-band{
    background:var(--ink);
    color:var(--paper);
    text-align:center;
    padding:80px 0;
  }
  .cta-inner{
    display:grid;
    grid-template-columns:400px 1fr;
    gap:64px;
    align-items:center;
    text-align:left;
  }

  .cta-band .eyebrow{color:#8B93A3;}
  .cta-band h2{
    font-family:var(--display);
    font-weight:500;
    font-size:clamp(28px,3.6vw,42px);
    margin:14px 0 30px;
    max-width:20ch;
  }
  .cta-band .cta-row{justify-content:flex-start;}
  .cta-band .btn-primary{background:var(--verify); color:var(--ink);}
  .cta-band .btn-primary:hover{background:#6FD6AB;}
  .cta-band .btn-ghost{border-color:#4A5164; color:var(--paper);}
  .cta-band .btn-ghost:hover{background:var(--paper); color:var(--ink);}

  /* ---------- FOOTER ---------- */
  /* ---------- CONTACT FORM ---------- */
  .contact-form{
    display:grid;
    gap:16px;
    max-width:560px;
  }
  .contact-form label{
    font-family:var(--mono);
    font-size:12px;
    letter-spacing:0.04em;
    text-transform:uppercase;
    color:var(--ink-soft);
    display:block;
    margin-bottom:6px;
  }
  .contact-form input, .contact-form textarea{
    width:100%;
    background:var(--paper-dim);
    border:1px solid var(--line);
    border-radius:2px;
    padding:12px 14px;
    font-family:var(--body);
    font-size:15px;
    color:var(--ink);
    resize:vertical;
  }
  .contact-form input:focus, .contact-form textarea:focus{
    outline:none;
    border-color:var(--verify);
  }
  .contact-form button{
    justify-self:start;
  }

  /* ---------- LEGAL PAGES ---------- */
  .legal{
    background:var(--paper-dim);
    border-top:1px solid var(--line);
  }
  .legal .section-head{max-width:none;}
  .legal-date{
    font-family:var(--mono);
    font-size:12.5px;
    color:var(--ink-soft);
    margin-top:8px;
  }
  .legal-body{max-width:70ch;}
  .legal-body h3{
    font-family:var(--display);
    font-weight:500;
    font-size:19px;
    margin:32px 0 10px;
  }
  .legal-body h3:first-child{margin-top:0;}
  .legal-body p{color:var(--ink-soft); font-size:15px; margin-bottom:10px;}
  .legal-body ul{
    margin:6px 0 14px 20px;
    color:var(--ink-soft);
    font-size:15px;
  }
  .legal-body li{margin-bottom:4px;}
  .legal-body a{color:var(--verify); text-decoration:underline;}

  footer{padding:44px 0; border-top:1px solid var(--line);}
  .footer-inner{
    display:flex; justify-content:space-between; align-items:center;
    flex-wrap:wrap; gap:16px;
    font-family:var(--mono); font-size:12px; color:var(--ink-soft);
  }
  .footer-inner a{text-decoration:none;}
  .footer-inner a:hover{color:var(--ink);}

  /* ---------- REVEAL ANIMATION ---------- */
  .reveal{
    opacity:0; transform:translateY(14px);
    transition:opacity 0.6s ease, transform 0.6s ease;
  }
  .reveal.in{opacity:1; transform:translateY(0);}

  /* ---------- RESPONSIVE ---------- */
  @media (max-width: 880px){
    .nav-links{display:none;}
    .hero-grid{grid-template-columns:1fr; gap:40px;}
    .stats-grid{grid-template-columns:repeat(2,1fr);}
    .stat-cell:nth-child(3){border-left:none;}
    .parts{grid-template-columns:1fr;}
    .field-notes{grid-template-columns:repeat(2,1fr);}
    .field-note{border-left:none; border-top:1px solid var(--line);}
    .field-note:nth-child(odd){border-left:none;}
    .fw-grid{grid-template-columns:1fr;}
    .author-grid{grid-template-columns:1fr;}
    .author-photo{width:140px; margin:0 auto;}
    .cred-list{grid-template-columns:1fr;}
    .cta-inner{grid-template-columns:1fr; text-align:center;}
    .book-mockup{max-width:220px; margin:0 auto;}
    .cta-band .cta-row{justify-content:center;}
  }

  /* ---------- 3D BOOK MOCKUP (front/back flip) ---------- */
  .book-mockup{
    perspective:1800px;
    width:100%;
    max-width:340px;
    margin:0 auto;
    cursor:pointer;
    -webkit-tap-highlight-color:transparent;
  }
  .book-mockup-3d{
    position:relative;
    width:100%;
    transform-style:preserve-3d;
    transform:rotateY(-30deg) rotateX(1deg);
    transition:transform 0.7s cubic-bezier(0.2,0.7,0.3,1);
  }
  .book-mockup:hover .book-mockup-3d{
    transform:rotateY(-16deg) rotateX(1deg);
  }
  .book-mockup.flipped .book-mockup-3d{
    transform:rotateY(-150deg) rotateX(1deg);
  }
  .book-mockup.flipped:hover .book-mockup-3d{
    transform:rotateY(-164deg) rotateX(1deg);
  }
  .book-face{
    width:100%;
    backface-visibility:hidden;
    -webkit-backface-visibility:hidden;
  }
  .book-face-back{
    position:absolute;
    top:0; left:0;
    transform:rotateY(180deg);
  }
  .book-cover-img{
    position:relative;
    width:100%;
    display:block;
    border-radius:2px 5px 5px 2px;
    box-shadow:2px 2px 0 rgba(255,255,255,0.04) inset, 0 34px 80px -20px rgba(0,0,0,0.65);
    z-index:2;
  }
  .book-pages{
    position:absolute;
    top:1.4%;
    bottom:1.4%;
    right:-16px;
    width:16px;
    background:repeating-linear-gradient(
      to bottom,
      #EDEBE0 0px, #EDEBE0 1px,
      #DAD7C8 1.4px, #DAD7C8 2px
    );
    transform:rotateY(90deg);
    transform-origin:left center;
    border-radius:0 3px 3px 0;
    box-shadow:inset -2px 0 4px rgba(0,0,0,0.15);
  }
  .book-spine{
    position:absolute;
    top:0.6%;
    bottom:0.6%;
    left:-9px;
    width:9px;
    transform:rotateY(-90deg);
    transform-origin:right center;
    border-radius:2px 0 0 2px;
    overflow:hidden;
    box-shadow:inset 2px 0 6px rgba(0,0,0,0.35);
  }
  .book-spine img{
    width:100%;
    height:100%;
    object-fit:cover;
    display:block;
  }
  .book-shadow{
    width:78%;
    height:22px;
    margin:14px auto 0;
    background:radial-gradient(ellipse at center, rgba(0,0,0,0.32), transparent 70%);
    filter:blur(2px);
  }
  .book-flip-hint{
    text-align:center;
    font-family:var(--mono);
    font-size:11.5px;
    letter-spacing:0.04em;
    color:#8B93A3;
    margin-top:18px;
  }
  .book-flip-hint svg{vertical-align:-2px; margin-right:5px;}