:root {
  --bg: #f4f6f5; --card: #ffffff; --ink: #18211d; --muted: #5d6b64; --line: #dde3e0;
  --accent: #0f6b4f; --accent-ink: #ffffff; --soft: #e6f2ec;
  --p1: #b42318; --p2: #a15c00; --p3: #3d6b9e;
  --term-bg: #0e1714; --term-ink: #d7e4dd; --term-dim: #8aa197; --term-ok: #5ee0a0; --term-err: #ff8a7a; --term-say: #9cc8ff; --term-ev: #ffd27a;
  --radius: 12px; --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #111614; --card: #19201d; --ink: #e3ebe7; --muted: #9baba3; --line: #2a3430; --soft: #1d2d26; --accent: #43c08f; --accent-ink: #0b1712; }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--ink); font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; min-height: 100vh; display: flex; flex-direction: column; }
a { color: var(--accent); }
button { font: inherit; cursor: pointer; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

.top { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 20px; border-bottom: 1px solid var(--line); background: var(--card); }
.brand { display: flex; align-items: baseline; gap: 8px; text-decoration: none; color: var(--ink); font-weight: 700; font-size: 18px; }
.brand .mark { font-family: var(--mono); background: var(--term-bg); color: var(--term-ok); padding: 1px 7px; border-radius: 6px; font-size: 15px; }
.brand small { color: var(--muted); font-weight: 500; font-size: 13px; }
.top-nav { display: flex; align-items: center; gap: 14px; }
.top-nav a { text-decoration: none; font-size: 15px; }
.lang { border: 1px solid var(--line); background: transparent; color: var(--ink); border-radius: 8px; padding: 3px 10px; font-size: 14px; font-weight: 600; }

main { flex: 1; width: 100%; max-width: 1180px; margin: 0 auto; padding: 24px 16px 40px; }
main:focus { outline: none; }
.foot { text-align: center; color: var(--muted); font-size: 13px; padding: 18px 16px 28px; border-top: 1px solid var(--line); }
.foot p { margin: 4px 0; }
.noscript { text-align: center; padding: 20px; }

/* home */
.hero { padding: 18px 0 8px; max-width: 760px; }
.hero h1 { font-size: clamp(26px, 4vw, 36px); line-height: 1.15; margin: 0 0 10px; }
.hero p { color: var(--muted); margin: 0 0 8px; font-size: 17px; }
.how { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 10px; margin: 18px 0 26px; padding: 0; list-style: none; }
.how li { background: var(--soft); border-radius: 10px; padding: 10px 12px; font-size: 14px; }
.how b { display: block; font-size: 13px; color: var(--accent); }
.progress-line { color: var(--muted); font-size: 14px; margin: 0 0 12px; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 14px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; display: flex; flex-direction: column; gap: 8px; }
.card h2 { font-size: 18px; margin: 0; line-height: 1.3; }
.card .meta { display: flex; flex-wrap: wrap; gap: 6px; font-size: 13px; color: var(--muted); }
.chip { border: 1px solid var(--line); border-radius: 99px; padding: 1px 9px; font-size: 12px; color: var(--muted); white-space: nowrap; }
.chip.topic { background: var(--soft); color: var(--accent); border-color: transparent; font-weight: 600; }
.card .from { font-size: 14px; color: var(--muted); margin: 0; }
.card .foot-row { margin-top: auto; display: flex; align-items: center; justify-content: space-between; gap: 8px; padding-top: 6px; }
.stars { letter-spacing: 2px; color: #d39b00; font-size: 15px; }
.stars .off { color: var(--line); }
.btn { border: 0; border-radius: 9px; padding: 8px 16px; background: var(--accent); color: var(--accent-ink); font-weight: 600; text-decoration: none; display: inline-block; }
.btn.ghost { background: transparent; color: var(--accent); border: 1px solid var(--line); }
.btn:disabled { opacity: .5; cursor: default; }

/* desk */
.desk-bar { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.desk-bar h1 { font-size: 20px; margin: 0; flex: 1; min-width: 220px; }
.desk { display: grid; grid-template-columns: minmax(280px, 380px) minmax(0, 1fr); gap: 16px; align-items: start; }
.desk > * { min-width: 0; }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
.panel + .panel { margin-top: 12px; }
.panel h2 { font-size: 13px; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); margin: 0 0 10px; }
.ticket-head { display: flex; justify-content: space-between; gap: 8px; font-size: 13px; color: var(--muted); }
.prio { font-weight: 700; border-radius: 6px; padding: 0 7px; color: #fff; }
.prio.P1 { background: var(--p1); } .prio.P2 { background: var(--p2); } .prio.P3 { background: var(--p3); }
.ticket-subject { font-weight: 700; margin: 8px 0 6px; }
.ticket-body { margin: 0; font-size: 15px; }
.intro { font-size: 14px; color: var(--muted); margin: 0; }
.stages { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.stages li { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; }
.stages .box { width: 20px; height: 20px; border-radius: 6px; border: 2px solid var(--line); flex: none; margin-top: 2px; display: grid; place-items: center; font-size: 13px; color: var(--accent-ink); }
.stages li.done .box { background: var(--accent); border-color: var(--accent); }
.stages li.done span:last-child { color: var(--muted); text-decoration: line-through; }
.tools { display: flex; gap: 8px; flex-wrap: wrap; }

.term { background: var(--term-bg); color: var(--term-ink); border-radius: var(--radius); font: 13.5px/1.5 var(--mono); padding: 12px 14px; min-height: 460px; max-height: 70vh; overflow: auto; cursor: text; }
.term .line { white-space: pre-wrap; word-break: break-word; min-height: 1.5em; }
.term .cmd { color: #ffffff; }
.term .say { color: var(--term-say); font-family: system-ui, -apple-system, "Segoe UI", sans-serif; font-size: 14px; }
.term .err { color: var(--term-err); }
.term .ok { color: var(--term-ok); font-weight: 700; font-family: system-ui, -apple-system, "Segoe UI", sans-serif; }
.term .event { color: var(--term-ev); }
.term .dim { color: var(--term-dim); }
.term form { display: flex; gap: 0; align-items: baseline; margin: 0; }
.term .ps { color: var(--term-ok); white-space: pre; }
.term input { flex: 1; min-width: 0; background: transparent; border: 0; color: #fff; font: inherit; padding: 0; caret-color: var(--term-ok); }
.term input:focus { outline: none; }
.term-help { font-size: 13px; color: var(--muted); margin: 8px 2px 0; }

.note textarea { width: 100%; min-height: 120px; border: 1px solid var(--line); border-radius: 9px; padding: 10px; font: inherit; background: var(--bg); color: var(--ink); resize: vertical; }
.note p { margin: 0 0 8px; font-size: 14px; color: var(--muted); }
.result h3 { margin: 0 0 6px; font-size: 22px; }
.result .big-stars { font-size: 26px; letter-spacing: 4px; color: #d39b00; }
.result ul { margin: 6px 0 12px; padding-left: 20px; }
.result .found li::marker { content: "✓  "; color: var(--accent); }
.result .missing li::marker { content: "✗  "; color: var(--p1); }
.result blockquote { margin: 8px 0 14px; padding: 10px 12px; background: var(--soft); border-radius: 9px; font-size: 14px; }
.result .solution { font-family: var(--mono); font-size: 13px; background: var(--term-bg); color: var(--term-ink); padding: 10px 12px; border-radius: 9px; overflow-x: auto; white-space: pre; }
.result details { margin: 0 0 14px; }
.result summary { cursor: pointer; font-weight: 600; }
.row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }

@media (max-width: 860px) {
  .desk { grid-template-columns: minmax(0, 1fr); }
  .term { min-height: 340px; }
  .top { padding: 10px 16px; }
}