: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);
    --ok:var(--green-300); --warn:var(--orange-300);
  }
  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}

  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}
  .note{font-size:11px;color:var(--text-3);margin-top:10px}

  .card{
    background:var(--panel);border-radius:12px;
    box-shadow:inset 0 0 0 1px var(--line);
    padding:18px;
  }
  .card h4{font-size:12px;font-weight:550;display:flex;justify-content:space-between;align-items:baseline}
  .card h4 span{font-size:11px;font-weight:500;color:var(--text-3)}


  /* ================= D · TWO SEASONS ================= */
  #d-stage{
    position:relative;margin-top:36px;border-radius:12px;overflow:hidden;
    background:var(--panel);box-shadow:inset 0 0 0 1px var(--line);
    height:340px;
  }
  .d-layer{position:absolute;inset:0;padding:20px}
  .d-layer svg{width:100%;height:100%}
  #d-b-layer{clip-path:inset(0 0 0 var(--dx,50%))}
  .d-cap{fill:none;stroke-width:2}
  #d-a-layer .d-cap{stroke:var(--text-3)}
  #d-b-layer .d-cap{stroke:var(--brand)}
  .d-lab{
    position:absolute;top:18px;
    font-size:11px;font-weight:550;letter-spacing:.4px;text-transform:none;
  }
  #d-a-lab{left:22px;color:var(--text-3)}
  #d-b-lab{right:22px;color:var(--brand)}
  .d-crash{
    position:absolute;font-size:11px;font-weight:550;color:var(--warn);
    background:color-mix(in srgb, var(--warn) 10%, transparent);
    padding:3px 8px;border-radius:6px;
  }
  .d-peak{
    position:absolute;font-size:11px;font-weight:550;color:var(--brand);
    background:color-mix(in srgb, var(--brand) 10%, transparent);
    padding:3px 8px;border-radius:6px;
  }
  #d-handle{
    position:absolute;top:0;bottom:0;left:var(--dx,50%);width:28px;margin-left:-14px;
    cursor:ew-resize;z-index:5;display:grid;place-items:center;
  }
  #d-handle::before{content:'';width:2px;height:100%;background:var(--text)}
  #d-handle span{
    position:absolute;width:26px;height:26px;border-radius:9999px;
    background:var(--text);color:var(--bg);
    display:grid;place-items:center;font-size:9px;
  }
  .d-stats{display:flex;gap:26px;margin-top:20px;position:relative}
  .d-stat{transition:opacity .2s linear}
  .d-stat b{display:block;font-size:24px;font-weight:550;letter-spacing:-.5px}
  .d-stat span{font-size:11px;color:var(--text-3);text-transform:none;letter-spacing:.4px;font-weight:550}

  @media (max-width:900px){
    #a-grid{grid-template-columns:1fr}
    .board{grid-template-columns:repeat(2,1fr)}
    #e-grid{grid-template-columns:1fr;gap:26px}
  }
  @media (prefers-reduced-motion: reduce){
    *{transition-duration:.01ms !important;animation-duration:.01ms !important}
  }

section{min-height:100vh}