:root {
  --bg: #0c0e11;
  --bg2: #12151a;
  --panel: #161a21;
  --panel2: #1b212b;
  --ink: #eef1f5;
  --muted: #8b95a5;
  --line: #2a313c;
  --line2: #3a4352;
  --accent: #e8913a;
  --accent2: #f0b45a;
  --accent-ink: #140e08;
  --ok: #3ecf8e;
  --warn-bg: #2a2116;
  --warn-ink: #e8c48a;
  --warn-line: #5a4528;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--sans);
  color: var(--ink);
  line-height: 1.5;
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(232,145,58,.12), transparent 55%),
    radial-gradient(900px 400px at 100% 0%, rgba(62,207,142,.06), transparent 50%),
    linear-gradient(180deg, var(--bg2), var(--bg) 40%);
}
a { color: var(--accent2); }
.wrap { max-width: 640px; margin: 0 auto; padding: 1.5rem 1.15rem 3.5rem; }
.top {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; margin-bottom: 1.6rem; padding-bottom: .9rem;
  border-bottom: 1px solid var(--line);
}
.brand {
  font-size: .78rem; font-weight: 700; letter-spacing: .08em;
  text-transform: uppercase;
}
.brand a {
  color: var(--ink); text-decoration: none;
  display: inline-flex; align-items: center; gap: .45rem;
}
.brand a::before {
  content: ""; width: .55rem; height: .55rem; border-radius: 2px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: 0 0 12px rgba(232,145,58,.45);
}
.nav { font-size: .82rem; }
.nav a {
  color: var(--muted); text-decoration: none; margin-left: .9rem;
  padding: .25rem 0; border-bottom: 1px solid transparent;
}
.nav a:hover { color: var(--ink); border-bottom-color: var(--accent); }
h1 {
  font-size: clamp(1.45rem, 4vw, 1.75rem);
  font-weight: 700; letter-spacing: -.03em;
  margin: 0 0 .55rem; line-height: 1.2;
}
.sub { margin: 0 0 1.25rem; color: var(--muted); font-size: .98rem; max-width: 38rem; }
.panel {
  background: linear-gradient(180deg, var(--panel2), var(--panel));
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1.15rem 1.15rem 1.05rem;
  margin: 0 0 1rem;
  box-shadow: 0 10px 30px rgba(0,0,0,.25);
}
.panel h2 {
  font-size: .7rem; font-weight: 700; letter-spacing: .08em;
  text-transform: uppercase; color: var(--accent2); margin: 0 0 .95rem;
}
.row { display: grid; grid-template-columns: 1fr 1fr; gap: .85rem; }
@media (max-width: 540px) { .row { grid-template-columns: 1fr; } }
.field { margin: 0 0 .9rem; }
.field:last-child { margin-bottom: 0; }
label {
  display: flex; justify-content: space-between; align-items: baseline;
  font-size: .78rem; font-weight: 600; color: var(--muted); margin: 0 0 .35rem;
}
select, input[type=number] {
  width: 100%; appearance: none;
  background: var(--bg);
  border: 1px solid var(--line2);
  border-radius: 7px;
  padding: .7rem .75rem;
  font: inherit; font-size: .95rem; color: var(--ink);
}
select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%288b95a5' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right .85rem center;
  padding-right: 2rem;
}
select:focus, input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(232,145,58,.2);
}
.units {
  display: inline-flex; gap: 0; border: 1px solid var(--line2);
  border-radius: 6px; overflow: hidden; margin: 0 0 1rem;
}
.units button {
  appearance: none; border: 0; background: transparent;
  color: var(--muted); font: inherit; font-size: .78rem; font-weight: 650;
  padding: .4rem .7rem; cursor: pointer;
}
.units button.active {
  background: var(--accent);
  color: var(--accent-ink);
}
.results {
  margin-top: 1rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(0,0,0,.22);
  padding: .35rem .9rem;
}
.metric {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: .5rem 1rem;
  align-items: baseline;
  padding: .62rem 0;
  border-bottom: 1px solid var(--line);
}
.metric:last-of-type { border-bottom: 0; }
.metric .k { font-size: .86rem; color: var(--muted); }
.metric .v {
  font-family: var(--mono);
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--ok);
  text-align: right;
  letter-spacing: -.02em;
}
.note { margin: .85rem 0 0; font-size: .86rem; color: var(--muted); }
.warn {
  background: var(--warn-bg);
  color: var(--warn-ink);
  border: 1px solid var(--warn-line);
  border-radius: 8px;
  padding: .8rem .9rem;
  font-size: .86rem;
  margin: 0 0 1rem;
}
.warn strong { color: #f3d7a4; }
.actions, .actions {
  display: flex; flex-wrap: wrap; gap: .65rem; align-items: center;
  margin: 1.15rem 0 .4rem;
}
.btn, .btn {
  display: inline-block;
  background: linear-gradient(180deg, var(--accent2), var(--accent));
  color: var(--accent-ink);
  text-decoration: none;
  font-weight: 700;
  font-size: .92rem;
  padding: .72rem 1.05rem;
  border-radius: 7px;
  border: 1px solid transparent;
  box-shadow: 0 6px 18px rgba(232,145,58,.22);
}
.btn:hover, .btn:hover { filter: brightness(1.06); }
.btn-ghost, .btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line2);
  box-shadow: none;
}
.fine { font-size: .82rem; color: var(--muted); margin: .55rem 0 0; }
footer {
  margin-top: 2.1rem; padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: .78rem; color: var(--muted);
}
.list { margin: .35rem 0 0; padding-left: 1.15rem; color: var(--muted); font-size: .92rem; }
.list li { margin: .3rem 0; }
.machine {
  display: grid; gap: .55rem; margin-top: .35rem;
}
.machine details {
  border: 1px solid var(--line);
  border-radius: 7px;
  background: rgba(0,0,0,.18);
  padding: .55rem .75rem;
}
.machine summary {
  cursor: pointer; font-size: .84rem; font-weight: 650; color: var(--ink);
}
.machine p { margin: .45rem 0 0; font-size: .82rem; color: var(--muted); }