:root{
    --bg:var(--gray-0); --bg-2:var(--gray-20); --panel:var(--gray-0);
    --text:var(--gray-750); --text-2:var(--gray-500); --text-3:var(--gray-300);
    --brand:var(--violet-400);
    --line:color-mix(in srgb, var(--gray-900) 8%, transparent); --line-strong:color-mix(in srgb, var(--gray-900) 13%, transparent);
    --hover:color-mix(in srgb, var(--gray-750) 4.5%, transparent);
    --shadow-float:0 0 0 1px color-mix(in srgb, var(--gray-900) 5%, transparent), 0 2px 6px color-mix(in srgb, var(--gray-900) 5%, transparent), 0 12px 32px color-mix(in srgb, var(--gray-900) 10%, transparent);
    --ease-exit:cubic-bezier(.215,.61,.355,1);
    --ease-out:cubic-bezier(.16,1,.3,1);
    --ease-spring:cubic-bezier(.34,1.26,.64,1);
    --ok:var(--green-300); --warn:var(--orange-300);
    --bp-bg:var(--gray-870); --bp-line:var(--violet-700); --bp-text:var(--violet-250);
  }
  html[data-theme="dark"]{
    --bg:var(--gray-900); --bg-2:var(--gray-880); --panel:var(--gray-870);
    --text:var(--gray-20); --text-2:var(--gray-350); --text-3:var(--gray-550);
    --brand:var(--violet-450);
    --line:color-mix(in srgb, var(--gray-0) 8%, transparent); --line-strong:color-mix(in srgb, var(--gray-0) 15%, transparent);
    --hover:color-mix(in srgb, var(--gray-0) 5.5%, transparent);
    --shadow-float:0 0 0 1px color-mix(in srgb, var(--gray-0) 8%, transparent), 0 2px 6px color-mix(in srgb, var(--gray-900) 40%, transparent), 0 12px 32px color-mix(in srgb, var(--gray-900) 55%, transparent);
  }
  *{margin:0;padding:0;box-sizing:border-box}
  html{color-scheme:light dark}
  body{
    font-family:var(--font);
    font-feature-settings:"cv01","ss03";
    background:var(--bg); color:var(--text);
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  button{font:inherit;color:inherit;background:none;border:0;cursor:default}
  ::selection{background:color-mix(in srgb, var(--brand) 25%, transparent)}
  .tab{font-variant-numeric:tabular-nums}
  .mono{font-family:var(--font-mono)}

  section{position:relative;padding:120px 24px}
  .wrap{max-width:1080px;margin:0 auto}
  .tag{position:absolute;top:26px;left:28px;font-size:11px;font-weight:550;letter-spacing:.5px;color:var(--text-3);text-transform:none}
  .kick{font-size:12px;font-weight:550;letter-spacing:.4px;text-transform:none;color:var(--text-3);margin-bottom:16px}
  h2{font-size:clamp(32px,3.8vw,48px);font-weight:500;letter-spacing:-0.02em;line-height:1.08;max-width:20ch;text-wrap:balance}
  .sub{margin-top:14px;font-size:15px;line-height:1.55;color:var(--text-2);max-width:56ch;text-wrap:pretty}


  /* ================= C · SELF-WRITING ================= */
  #c-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px;margin-top:36px;align-items:stretch}
  .doc{
    background:var(--panel);border-radius:12px;box-shadow:inset 0 0 0 1px var(--line);
    padding:24px;min-height:300px;
  }
  .doc h4{font-size:12px;font-weight:550;color:var(--text-3);text-transform:none;letter-spacing:.5px;margin-bottom:14px;display:flex;justify-content:space-between}
  #docText{font-size:15px;line-height:1.85;max-width:44ch;white-space:pre-wrap}
  #docText .hl{color:var(--brand);font-weight:550}
  .caret2{display:inline-block;width:7px;height:16px;background:var(--text);vertical-align:-2px;animation:blink 1s steps(1) infinite}
  @keyframes blink{50%{opacity:0}}
  #sessTL{display:flex;align-items:flex-end;gap:3px;height:190px;margin-top:20px}
  .tlb{
    border-radius:4px 4px 2px 2px;flex:none;
    background:var(--bg-2);box-shadow:inset 0 0 0 1px var(--line);
    transform:scaleY(0);transform-origin:bottom;
    transition:transform .5s var(--ease-spring);
    position:relative;
  }
  .tlb.on{transform:scaleY(1)}
  .tlb.int{background:color-mix(in srgb, var(--brand) 78%, var(--bg));box-shadow:none}
  .tlb.rec{background:var(--bg-2)}
  .tl-lab{display:flex;justify-content:space-between;font-size:11px;color:var(--text-3);margin-top:8px}
  #sessMeta{display:flex;gap:22px;margin-top:16px;padding-top:14px;border-top:1px solid var(--line)}
  #sessMeta div b{display:block;font-size:20px;font-weight:550;letter-spacing:-.3px;opacity:0;transform:translateY(5px);transition:opacity .4s, transform .45s var(--ease-out)}
  #sessMeta div span{font-size:9px;color:var(--text-3);text-transform:none;letter-spacing:.4px;font-weight:550}
  #sessMeta div.on b{opacity:1;transform:none}

  @media (max-width:900px){
    #c-grid{grid-template-columns:1fr}
  }
  @media (prefers-reduced-motion: reduce){
    *{transition-duration:.01ms !important;animation-duration:.01ms !important}
  }

section{min-height:100vh}