:root {
    --paper:   #F3EEE4;
    --paper2:  #ECE6D9;
    --paper3:  #E5DDD0;
    --ink:     #1C1A16;
    --ink2:    #4A4744;
    --ink3:    #8B8580;
    --line:    rgba(28,26,22,0.10);
    --line2:   rgba(28,26,22,0.06);
    /* brand accents */
    --c-wknds: #1C1A16;
    --c-atl:   #D4471F;
    --c-mah:   #3d6b52;
  }
  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body {
    background: var(--paper);
    color: var(--ink);
    font-family: "DM Sans", system-ui, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

  /* NAV */
  nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    display: flex; align-items: center; justify-content: space-between;
    padding: 24px 48px;
    transition: background .35s ease, padding .3s ease, border-color .3s ease;
    border-bottom: 1px solid transparent;
  }
  nav.stuck {
    background: rgba(243,238,228,0.92);
    backdrop-filter: blur(14px);
    padding: 15px 48px;
    border-color: var(--line);
  }
  .nav-logo {
    font-family: "DM Sans", sans-serif;
    font-size: 13px; font-weight: 600;
    letter-spacing: 0.18em; text-transform: uppercase;
    color: var(--ink); text-decoration: none;
  }
  .nav-links {
    display: flex; align-items: center; gap: 30px;
    list-style: none;
    font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink2);
  }
  .nav-links a { text-decoration: none; color: inherit; transition: color .2s; }
  .nav-links a:hover { color: var(--ink); }

  /* HERO */
  .hero {
    min-height: 100vh;
    display: flex; flex-direction: column; justify-content: flex-end;
    padding: 120px 48px 88px;
    border-bottom: 1px solid var(--line);
  }
  .hero-tag {
    font-family: "JetBrains Mono", monospace;
    font-size: 11px; font-weight: 500;
    letter-spacing: 0.22em; text-transform: uppercase;
    color: var(--ink3); margin-bottom: 32px;
  }
  .hero h1 {
    font-family: "DM Serif Display", Georgia, serif;
    font-weight: 400;
    font-size: clamp(48px, 8.5vw, 120px);
    line-height: 0.94; letter-spacing: -0.02em;
    max-width: 14ch;
  }
  .hero h1 em { font-style: italic; }
  .hero-desc {
    margin-top: 44px;
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 24px; max-width: 900px;
  }
  .hero-desc p {
    font-size: 17px; line-height: 1.65; color: var(--ink2); font-weight: 300;
  }
  .hero-desc p b { color: var(--ink); font-weight: 500; }
  .hero-brands {
    margin-top: 56px;
    display: flex; align-items: center; gap: 28px; flex-wrap: wrap;
  }
  .hero-brand-chip {
    font-size: 11.5px; font-weight: 500; letter-spacing: 0.12em; text-transform: uppercase;
    color: var(--ink3); text-decoration: none;
    display: flex; align-items: center; gap: 9px;
    transition: color .2s;
  }
  .hero-brand-chip:hover { color: var(--ink); }
  .chip-dot {
    width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0;
  }

  /* INTRO */
  .intro {
    padding: 96px 48px;
    display: grid; grid-template-columns: 5fr 7fr;
    gap: 80px; align-items: start;
    border-bottom: 1px solid var(--line);
  }
  .intro-label {
    font-family: "JetBrains Mono", monospace;
    font-size: 11px; font-weight: 500; letter-spacing: 0.22em; text-transform: uppercase;
    color: var(--ink3); padding-top: 6px;
  }
  .intro-body h2 {
    font-family: "DM Serif Display", serif;
    font-size: clamp(28px, 3.2vw, 44px);
    font-weight: 400; line-height: 1.12; letter-spacing: -0.01em;
    margin-bottom: 24px;
  }
  .intro-body h2 em { font-style: italic; }
  .intro-body p {
    font-size: 16.5px; line-height: 1.72; color: var(--ink2); font-weight: 300;
    max-width: 60ch;
  }
  .intro-body p + p { margin-top: 14px; }
  .intro-body p b { color: var(--ink); font-weight: 500; }

  /* FIRM BLOCKS */
  .firm {
    display: grid; grid-template-columns: 1fr 1fr;
    border-bottom: 1px solid var(--line);
  }
  .firm-info {
    padding: 80px 48px;
    border-right: 1px solid var(--line);
    display: flex; flex-direction: column;
  }
  .firm-badge {
    display: inline-flex; align-items: center; gap: 10px;
    margin-bottom: 36px;
  }
  .firm-dot {
    width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0;
  }
  .firm-badge-label {
    font-family: "JetBrains Mono", monospace;
    font-size: 11px; font-weight: 500; letter-spacing: 0.2em; text-transform: uppercase;
    color: var(--ink3);
  }
  .firm-name {
    font-family: "DM Serif Display", serif;
    font-size: clamp(36px, 5vw, 64px);
    font-weight: 400; line-height: 1.0; letter-spacing: -0.02em;
    margin-bottom: 10px;
  }
  .firm-tagline {
    font-family: "DM Serif Display", serif;
    font-style: italic;
    font-size: clamp(18px, 2.2vw, 26px);
    font-weight: 400; line-height: 1.25; letter-spacing: -0.01em;
    color: var(--ink2);
    margin-bottom: 32px;
  }
  .firm-desc {
    font-size: 15.5px; line-height: 1.7; color: var(--ink2); font-weight: 300;
    max-width: 54ch; flex: 1;
  }
  .firm-desc b { color: var(--ink); font-weight: 500; }
  .firm-link {
    margin-top: 44px;
    display: inline-flex; align-items: center; gap: 10px;
    font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase;
    color: var(--ink); text-decoration: none; font-weight: 500;
    border-bottom: 1px solid var(--ink);
    padding-bottom: 3px;
    width: fit-content;
    transition: opacity .2s;
  }
  .firm-link:hover { opacity: 0.6; }
  .firm-link svg { flex-shrink: 0; }

  /* services panel */
  .firm-services {
    padding: 80px 48px;
    background: var(--paper2);
    display: flex; flex-direction: column; justify-content: space-between;
    gap: 40px;
  }
  .services-label {
    font-family: "JetBrains Mono", monospace;
    font-size: 10.5px; font-weight: 500; letter-spacing: 0.22em; text-transform: uppercase;
    color: var(--ink3); margin-bottom: 28px;
  }
  .service-list { list-style: none; flex: 1; }
  .service-list li {
    display: flex; align-items: baseline; gap: 16px;
    padding: 13px 0; border-bottom: 1px solid var(--line2);
    font-size: 15px; color: var(--ink2); font-weight: 300;
  }
  .service-list li:first-child { border-top: 1px solid var(--line2); }
  .service-list li .si {
    font-family: "JetBrains Mono", monospace;
    font-size: 10px; color: var(--ink3); flex-shrink: 0; letter-spacing: 0.04em;
    padding-top: 2px;
  }
  .firm-accent-bar {
    height: 3px; width: 48px; border-radius: 2px; margin-top: 8px;
  }

  /* accent bars per firm */
  .firm-wknds .firm-accent-bar { background: var(--c-wknds); }
  .firm-atl   .firm-accent-bar { background: var(--c-atl); }
  .firm-mah   .firm-accent-bar { background: var(--c-mah); }
  .firm-wknds .firm-dot { background: var(--c-wknds); }
  .firm-atl   .firm-dot { background: var(--c-atl); }
  .firm-mah   .firm-dot { background: var(--c-mah); }

  /* CLOSING */
  .closing {
    padding: 96px 48px;
    display: grid; grid-template-columns: 5fr 7fr;
    gap: 80px; align-items: end;
    border-bottom: 1px solid var(--line);
  }
  .closing-left h2 {
    font-family: "DM Serif Display", serif;
    font-size: clamp(28px, 3.2vw, 44px);
    font-weight: 400; line-height: 1.12; letter-spacing: -0.01em;
  }
  .closing-left h2 em { font-style: italic; }
  .closing-right p {
    font-size: 16.5px; line-height: 1.72; color: var(--ink2); font-weight: 300;
  }
  .closing-right p + p { margin-top: 14px; }
  .closing-right p b { color: var(--ink); font-weight: 500; }
  .closing-links {
    margin-top: 36px; display: flex; flex-direction: column; gap: 14px;
  }
  .closing-link {
    display: inline-flex; align-items: center; gap: 10px;
    font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase;
    color: var(--ink); text-decoration: none; font-weight: 500;
    border-bottom: 1px solid var(--line);
    padding-bottom: 3px; width: fit-content;
    transition: border-color .2s;
  }
  .closing-link:hover { border-color: var(--ink); }

  /* FOOTER */
  footer {
    padding: 36px 48px;
    display: flex; align-items: center; justify-content: space-between;
    gap: 24px; flex-wrap: wrap;
  }
  .foot-brand {
    font-size: 12px; font-weight: 600;
    letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink3);
  }
  .foot-right {
    display: flex; align-items: center; gap: 24px;
    font-size: 11.5px; letter-spacing: 0.06em; color: var(--ink3);
  }
  .foot-right a { text-decoration: none; color: inherit; transition: color .2s; }
  .foot-right a:hover { color: var(--ink); }

  .hero-cities {
    margin-top: 32px;
    font-family: "JetBrains Mono", monospace;
    font-size: 11px; font-weight: 400; letter-spacing: 0.22em; text-transform: uppercase;
    color: var(--ink3);
  }
  /* thesis diagram */
  .thesis-diagram {
    position: sticky; top: 140px;
    padding-top: 6px;
  }
  .td-group { position: relative; }
  .td-root {
    display: flex; align-items: center; gap: 10px;
    margin-bottom: 0;
  }
  .td-dot {
    width: 10px; height: 10px; border-radius: 50%;
    background: var(--ink); flex-shrink: 0;
    animation: td-pulse 3s ease-in-out infinite;
  }
  @keyframes td-pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(28,26,22,0.25); }
    50%       { box-shadow: 0 0 0 6px rgba(28,26,22,0); }
  }
  .td-name {
    font-family: "JetBrains Mono", monospace;
    font-size: 11px; font-weight: 500;
    letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink);
  }
  .td-lines {
    display: block; width: 2px; height: 80px; margin-left: 4px; flex-shrink: 0;
  }
  .td-firms {
    display: flex; flex-direction: column; gap: 0;
    border-left: 1.5px solid var(--line); margin-left: 4px;
    padding-left: 0;
  }
  .td-firm {
    display: flex; flex-direction: column;
    padding: 16px 0 16px 22px;
    border-bottom: 1px solid var(--line2);
    position: relative;
    opacity: 0;
    transform: translateX(-8px);
    animation: td-slidein .5s ease forwards;
  }
  .td-firm:last-child { border-bottom: none; }
  .td-firm::before {
    content: "";
    position: absolute; left: -1px; top: 50%;
    transform: translateY(-50%);
    width: 18px; height: 1.5px;
    background: var(--line);
  }
  .td-tick {
    position: absolute; left: -5px; top: 50%;
    transform: translateY(-50%);
    width: 8px; height: 8px; border-radius: 50%;
    flex-shrink: 0;
    background: var(--paper); border: 1.5px solid;
  }
  .td-wknds .td-tick { border-color: var(--c-wknds); }
  .td-atl  .td-tick { border-color: var(--c-atl);   }
  .td-mah  .td-tick { border-color: var(--c-mah);   }
  .td-firm:nth-child(1) { animation-delay: .2s; }
  .td-firm:nth-child(2) { animation-delay: .4s; }
  .td-firm:nth-child(3) { animation-delay: .6s; }
  @keyframes td-slidein {
    to { opacity: 1; transform: translateX(0); }
  }
  .td-firm-label {
    font-size: 14px; font-weight: 600; color: var(--ink); line-height: 1.2;
  }
  .td-firm-sub {
    font-family: "JetBrains Mono", monospace;
    font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase;
    color: var(--ink3); margin-top: 4px;
  }
  .td-caption {
    margin-top: 28px;
    font-size: 12.5px; color: var(--ink3); line-height: 1.6;
    font-weight: 300; max-width: 28ch;
    border-top: 1px solid var(--line2); padding-top: 16px;
  }

  /* reveal */
  .rev { opacity: 0; transform: translateY(18px); transition: opacity .85s ease, transform .85s ease; }
  .rev.in { opacity: 1; transform: none; }
  .rev.d1 { transition-delay: .08s; }
  .rev.d2 { transition-delay: .16s; }
  .rev.d3 { transition-delay: .24s; }
  .rev.d4 { transition-delay: .32s; }

  @media (max-width: 1024px) {
    .firm { grid-template-columns: 1fr; }
    .firm-info { border-right: none; border-bottom: 1px solid var(--line); }
    .intro, .closing { grid-template-columns: 1fr; gap: 32px; }
    .hero-desc { grid-template-columns: 1fr; }
  }
  @media (max-width: 640px) {
    nav { padding: 18px 24px; }
    nav.stuck { padding: 12px 24px; }
    .nav-links { display: none; }
    .hero { padding: 100px 24px 64px; }
    .intro, .closing { padding: 64px 24px; }
    .firm-info, .firm-services { padding: 56px 24px; }
    footer { padding: 28px 24px; }
  }