:root {
  --bg: #0f1512;
  --panel: #16211c;
  --ink: #e7f0ea;
  --muted: #8fa89a;
  --accent: #3fbf7f;
  --accent2: #d8a24a;
  --line: #24352c;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 15px/1.55 system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding: .7rem 1.2rem; background: var(--panel);
  border-bottom: 1px solid var(--line); flex-wrap: wrap;
}
.brand { display: flex; flex-direction: column; }
.logo { font-size: 1.25rem; letter-spacing: .5px; }
.logo strong { color: var(--accent); }
.tag { color: var(--muted); font-size: .8rem; }
nav { display: flex; gap: .35rem; flex-wrap: wrap; }
nav a { padding: .35rem .6rem; border-radius: 6px; color: var(--ink); font-size: .9rem; }
nav a:hover { background: #1e2c25; text-decoration: none; }

main { max-width: 1080px; margin: 0 auto; padding: 1.5rem 1.2rem 3rem; }
.hero h1 { font-size: 2.4rem; margin: .2rem 0; }
.hero p { color: var(--muted); max-width: 60ch; }
.pill-row { display: flex; gap: .5rem; margin-top: .8rem; flex-wrap: wrap; }
.pill { background: #1e2c25; border: 1px solid var(--line); color: var(--accent);
  padding: .2rem .6rem; border-radius: 999px; font-size: .78rem; }

.stats {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: .8rem; margin: 1.8rem 0;
}
.stat { background: var(--panel); border: 1px solid var(--line); border-radius: 10px;
  padding: 1rem; text-align: center; }
.stat .num { font-size: 1.7rem; font-weight: 700; color: var(--accent); }
.stat .lbl { color: var(--muted); font-size: .8rem; margin-top: .2rem; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 12px;
  padding: 1.1rem; color: var(--ink); transition: border-color .15s, transform .15s; }
.card:hover { border-color: var(--accent); transform: translateY(-2px); text-decoration: none; }
.card h3 { margin: 0 0 .4rem; }
.card p { color: var(--muted); margin: 0; font-size: .9rem; }

.notice { margin-top: 1.6rem; padding: .8rem 1rem; border: 1px dashed var(--accent2);
  border-radius: 8px; color: var(--accent2); background: #201a10; font-size: .9rem; }

footer { border-top: 1px solid var(--line); color: var(--muted); text-align: center;
  padding: 1.2rem; font-size: .82rem; }

table { width: 100%; border-collapse: collapse; margin: .5rem 0 1.5rem; }
th, td { text-align: left; padding: .45rem .6rem; border-bottom: 1px solid var(--line);
  font-size: .9rem; vertical-align: top; }
th { color: var(--muted); font-weight: 600; }
tbody tr:hover { background: #16211c; }

nav a.active { background: #1e2c25; color: var(--accent); }
a.brand { color: inherit; text-decoration: none; }
a.brand:hover { text-decoration: none; }

.muted { color: var(--muted); font-size: .88rem; }
.controls { display: flex; gap: .8rem; align-items: center; flex-wrap: wrap; margin: 1rem 0; }
.controls label { color: var(--muted); font-size: .9rem; }
.controls select, .controls input[type=text] {
  background: var(--panel); color: var(--ink); border: 1px solid var(--line);
  border-radius: 6px; padding: .35rem .5rem; }
.btn { background: var(--accent); color: #06130c; border: none; border-radius: 6px;
  padding: .4rem .8rem; font-size: .9rem; cursor: pointer; text-decoration: none; }
.btn:hover { filter: brightness(1.1); text-decoration: none; }
textarea { width: 100%; background: var(--panel); color: var(--ink);
  border: 1px solid var(--line); border-radius: 8px; padding: .6rem;
  font-family: ui-monospace, monospace; font-size: .85rem; }
pre.seq { background: var(--panel); border: 1px solid var(--line); border-radius: 8px;
  padding: .8rem; overflow-x: auto; white-space: pre-wrap; word-break: break-all;
  font-size: .8rem; color: var(--accent2); }
.placeholder { background: var(--panel); border: 1px dashed var(--line); border-radius: 10px;
  padding: 3rem; text-align: center; color: var(--muted); }
h1 { font-size: 1.8rem; }
main h3 { border-bottom: 1px solid var(--line); padding-bottom: .3rem; margin-top: 1.6rem; }