Made of little things.

  :root { --acc: #a5d63f; --gold: #e8c547; --red: #e0402f; --txt: #e6eadf; --dim: #8c978a; --line: rgba(255,255,255,.12); --panel: rgba(12,15,12,.93); }
  * { box-sizing: border-box; }
  html, body { margin: 0; height: 100%; overflow: hidden; background: #0b0c0d; color: var(--txt); font-family: Bahnschrift, 'Arial Narrow', 'Segoe UI', sans-serif; user-select: none; }
  #game { position: fixed; inset: 0; width: 100%; height: 100%; display: block; cursor: none; }
  .screen { position: fixed; inset: 0; display: none; z-index: 5; }
  .screen.on { display: flex; }
  button { font: inherit; cursor: pointer; color: var(--txt); background: rgba(20,24,20,.85); border: 1px solid var(--line); letter-spacing: 4px; padding: 14px 22px; text-align: left; transition: background .12s, border-color .12s, transform .12s, color .12s; }
  button:hover { background: var(--acc); color: #10140c; border-color: var(--acc); transform: translateX(4px); }
  button.big { font-size: 22px; font-weight: 700; padding: 18px 26px; }
  kbd { border: 1px solid #556052; padding: 1px 7px; border-radius: 3px; background: rgba(0,0,0,.35); color: var(--txt); font-family: inherit; }

  #menu { background: radial-gradient(ellipse at 75% 35%, #1f2c1b 0%, #0b0d0b 60%); align-items: safe center; padding: 3vh 8vw; overflow-y: auto; }
  #menu button { padding: 11px 22px; }
  #menu button.big { padding: 14px 26px; }
  #campaign { background: radial-gradient(ellipse at 40% 20%, #1f2a1b 0%, #0b0d0b 65%); flex-direction: column; padding: 3vh 4vw; overflow-y: auto; }
  #campaign .mcard { cursor: default; }
  .mcard.done { opacity: .6; }
  .mcard.done .lmeta { color: #7fe36a; }
  .mcard.sel .lmeta { color: var(--acc); }
  .campbtns { position: relative; display: flex; gap: 12px; margin-top: 18px; }
  .diff { margin: 4px 0 8px; max-width: 420px; }
  .difflbl { font-size: 13px; letter-spacing: 3px; color: var(--dim); margin-bottom: 4px; }
  .difflbl b { letter-spacing: 3px; margin-left: 8px; }
  .difflbl b.d-hard { color: var(--red); } .difflbl b.d-normal { color: var(--txt); } .difflbl b.d-easy { color: #7fe36a; }
  #diffSlider { width: 100%; accent-color: var(--acc); cursor: pointer; margin: 0; }
  .diffends { display: flex; justify-content: space-between; font-size: 11px; letter-spacing: 2px; color: var(--dim); }
  #diffDesc { font-size: 12px; color: #a3ad9f; margin-top: 4px; letter-spacing: .5px; }
  #character { background: radial-gradient(ellipse at 50% 20%, #1f2a1b 0%, #0b0d0b 65%); flex-direction: column; padding: 3vh 4vw; overflow-y: auto; }
  .charimg { width: 160px !important; height: 120px; image-rendering: auto !important; background: radial-gradient(circle, rgba(165,214,63,.1), transparent 70%); border: none !important; margin: 0 auto 6px; }
  .perks { margin: 8px 0 0; padding-left: 18px; color: #b7c0b3; font-size: 13px; line-height: 1.6; }
  #maps { background: radial-gradient(ellipse at 50% 20%, #1c2219 0%, #0b0d0b 65%); flex-direction: column; padding: 3vh 4vw; overflow-y: auto; }
  .mgrid { position: relative; display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 12px; margin-top: 14px; }
  .mcard { background: rgba(16,20,16,.9); border: 1px solid var(--line); padding: 12px; cursor: pointer; transition: border-color .12s, background .12s; }
  .mcard:hover { border-color: #6d7a63; }
  .mcard.sel { border-color: var(--acc); background: rgba(40,52,26,.9); box-shadow: inset 3px 0 0 var(--acc); }
  .mcard img { width: 100%; display: block; image-rendering: pixelated; margin-bottom: 10px; border: 1px solid rgba(0,0,0,.6); }
  #shop { background: radial-gradient(ellipse at 70% 20%, #1c2219 0%, #0b0d0b 65%); flex-direction: column; padding: 3vh 4vw; overflow-y: auto; }
  .funds { align-self: center; margin-right: 12px; letter-spacing: 3px; color: var(--dim); }
  .funds b { color: #7fe36a; font-size: 22px; letter-spacing: 1px; }
  .lcard button.buy { width: 100%; margin-top: 10px; padding: 9px; text-align: center; font-size: 13px; letter-spacing: 2px; }
  .lcard button.buy:hover { transform: none; }
  .lcard button.buy:disabled { opacity: .35; cursor: not-allowed; background: rgba(20,24,20,.85); color: var(--txt); border-color: var(--line); }
  .lvlrow { display: grid; grid-template-columns: 90px 1fr; align-items: center; gap: 8px; font-size: 12px; letter-spacing: 1px; margin-top: 8px; }
  .lvlrow i { height: 6px; background: rgba(255,255,255,.08); display: block; }
  .lvlrow b { height: 100%; display: block; background: var(--gold); }
  .lvlrow b.ahp { background: #5f9fd6; }
  #shop .lcard { cursor: default; }
  .cell.locked { cursor: default; }
  .lcard.locked { opacity: .45; cursor: not-allowed; }
  .lcard.locked .lcls { color: var(--gold); }
  #aSlot .cell { height: 84px; }
  #aSlot .cell img { width: 44px; height: 44px; }
  #menu::before, #loadout::before, #shop::before, #maps::before, #campaign::before, #character::before { content: ''; position: absolute; inset: 0; pointer-events: none; background-image: linear-gradient(rgba(165,214,63,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(165,214,63,.035) 1px, transparent 1px); background-size: 40px 40px; }
  .col { position: relative; display: flex; flex-direction: column; gap: 8px; max-width: 560px; }
  h1 { font-size: 80px; line-height: .9; letter-spacing: 10px; margin: 0; font-weight: 800; }
  h1 span { color: var(--acc); }
  .sub { letter-spacing: 7px; color: var(--dim); margin: 4px 0 12px; font-size: 14px; }
  .info { color: var(--dim); font-size: 13px; letter-spacing: 2px; }
  .hint { color: #a3ad9f; font-size: 13px; line-height: 1.85; margin-top: 10px; letter-spacing: .5px; }

  #loadout { background: radial-gradient(ellipse at 30% 20%, #1a2418 0%, #0b0d0b 65%); flex-direction: column; padding: 3vh 4vw; overflow-y: auto; }
  .lbar { position: relative; display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 10px; }
  .lbar h2 { margin: 0; font-size: 40px; letter-spacing: 8px; }
  .lbar .btns { display: flex; gap: 10px; }
  .lbar button { padding: 10px 18px; }
  h3 { position: relative; margin: 16px 0 8px; font-size: 14px; letter-spacing: 5px; color: var(--acc); font-weight: 600; }
  .lgrid { position: relative; display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 10px; }
  .lcard { background: rgba(16,20,16,.9); border: 1px solid var(--line); padding: 12px 14px; cursor: pointer; transition: border-color .12s, background .12s; }
  .lcard:hover { border-color: #6d7a63; }
  .lcard.sel { border-color: var(--acc); background: rgba(40,52,26,.9); box-shadow: inset 3px 0 0 var(--acc); }
  .lhead { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
  .lhead img { width: 120px; height: 48px; }
  .lhead img.sq { width: 48px; height: 48px; }
  .lname { font-size: 18px; font-weight: 700; letter-spacing: 1px; }
  .lcls { font-size: 12px; color: var(--dim); letter-spacing: 2px; text-transform: uppercase; }
  .stat { display: grid; grid-template-columns: 84px 1fr; align-items: center; gap: 8px; font-size: 11px; color: var(--dim); letter-spacing: 1px; margin-top: 4px; }
  .stat i { height: 5px; background: rgba(255,255,255,.08); display: block; }
  .stat b { height: 100%; display: block; background: var(--txt); }
  .lcard.sel .stat b { background: var(--acc); }
  .lmeta { margin-top: 8px; font-size: 11px; color: var(--dim); letter-spacing: 1px; }
  .ldesc { margin-top: 8px; font-size: 13px; color: #b7c0b3; line-height: 1.4; }

  .overlay { background: rgba(6,8,6,.72); align-items: center; justify-content: center; }
  .box { display: flex; flex-direction: column; gap: 10px; min-width: 340px; }
  .box h2 { margin: 0 0 10px; font-size: 48px; letter-spacing: 10px; }
  #endTitle.win { color: #7fe36a; }
  #endTitle.lose { color: var(--red); }
  #endSub { color: var(--dim); letter-spacing: 2px; margin: -6px 0 10px; }
  #endStats { display: grid; grid-template-columns: auto auto; gap: 8px 50px; font-size: 18px; margin-bottom: 20px; }
  #endStats div:nth-child(odd) { color: var(--dim); letter-spacing: 3px; font-size: 14px; align-self: center; }
  #endStats div:nth-child(even) { text-align: right; font-weight: 700; }

  /* inventory */
  #inv { position: fixed; inset: 0; display: none; z-index: 4; cursor: default; background: linear-gradient(90deg, rgba(5,7,5,.55), rgba(5,7,5,.1) 35%, rgba(5,7,5,.1) 65%, rgba(5,7,5,.55)); }
  #inv.on { display: block; }
  .ipanel { position: absolute; top: 50%; transform: translateY(-50%); width: 360px; max-height: 92vh; overflow-y: auto; background: var(--panel); border: 1px solid var(--line); padding: 16px; }
  #invLeft { left: 2.5vw; }
  #invRight { right: 2.5vw; }
  .ititle { font-size: 20px; letter-spacing: 5px; font-weight: 700; margin-bottom: 4px; }
  .isub { font-size: 12px; letter-spacing: 2px; color: var(--dim); margin-bottom: 12px; }
  #lootGrid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
  #lootEmpty { color: var(--dim); font-size: 13px; letter-spacing: 1px; margin-top: 10px; }
  #iSlots { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
  .slotlbl { font-size: 11px; letter-spacing: 3px; color: var(--acc); margin: 8px 0 4px; }
  .cell { position: relative; height: 96px; border: 1px solid var(--line); background: rgba(255,255,255,.035); display: flex; flex-direction: column; align-items: center; justify-content: center; cursor: grab; padding: 4px; }
  .cell.wpn { height: 104px; }
  .cell img { width: 56px; height: 56px; pointer-events: none; }
  .cell.wpn img { width: 125px; height: 50px; }
  .cell .nm { font-size: 13px; font-weight: 600; letter-spacing: .5px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 100%; }
  .cell .sb { font-size: 11px; color: var(--dim); letter-spacing: 1px; }
  .cell.empty { cursor: default; background: repeating-linear-gradient(45deg, rgba(255,255,255,.02) 0 6px, transparent 6px 12px); }
  .cell .ph { font-size: 11px; letter-spacing: 3px; color: #4f584c; }
  .cell:not(.empty):hover { border-color: #6d7a63; background: rgba(255,255,255,.06); }
  .cell.src { opacity: .3; }
  .cell.ok { border-color: var(--acc); background: rgba(165,214,63,.14); }
  .cell.no { border-color: var(--red); background: rgba(224,64,47,.14); }
  .cell.ghost { position: fixed; z-index: 20; pointer-events: none; width: 160px; background: rgba(30,36,28,.95); border-color: var(--acc); display: none; cursor: grabbing; }
  #wSlots .cell { width: 100%; }
  .ihp { margin-top: 14px; display: flex; align-items: center; gap: 10px; font-size: 12px; letter-spacing: 2px; color: var(--dim); }
  .ihp i { flex: 1; height: 8px; background: rgba(0,0,0,.5); display: block; }
  .ihp b { display: block; height: 100%; background: var(--txt); }
  #invTip { position: absolute; left: 50%; bottom: 4vh; transform: translateX(-50%); max-width: 560px; text-align: center; font-size: 14px; color: #c8d0c4; background: rgba(8,10,8,.8); padding: 8px 14px; min-height: 18px; }
  #invTip:empty { display: none; }
  #invTip.bad { color: #ffb0a6; border: 1px solid var(--red); }
  #invClose { position: absolute; top: 3vh; left: 50%; transform: translateX(-50%); padding: 8px 18px; font-size: 13px; }
  #invClose:hover { transform: translateX(-50%); }