:root {
  --bg: #12141a;
  --panel: #1b1e27;
  --panel-2: #14171f;
  --ink: #e8edf7;
  --muted: #8b93a7;
  --faint: #5e6678;
  --line: rgba(0, 173, 216, 0.18);
  --go: #00add8;
  --warn: #ff6b4a;
  --ok: #7ee787;
  --jb: #fe8a4d;
  --mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", system-ui, sans-serif;
  --radius: 16px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100%;
  color: var(--ink);
  font-family: var(--sans);
  background: var(--bg);
  line-height: 1.5;
}

.glow {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(720px 320px at 8% -8%, rgba(0, 173, 216, 0.16), transparent 58%),
    radial-gradient(560px 280px at 100% 0%, rgba(254, 138, 77, 0.12), transparent 50%),
    linear-gradient(180deg, #151821, #12141a 42%, #10131a);
}
.glow::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 173, 216, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 173, 216, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.45), transparent 70%);
}

.nav, main, .foot { position: relative; z-index: 1; }

.nav {
  position: sticky;
  top: 0.7rem;
  z-index: 5;
  width: min(1080px, calc(100% - 1.6rem));
  margin: 0.8rem auto 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  padding: 0.55rem 0.85rem;
  background: rgba(27, 30, 39, 0.86);
  border: 1px solid var(--line);
  border-radius: 999px;
  backdrop-filter: blur(14px);
}
.hub, .origin {
  color: var(--ink);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 700;
}
.origin { color: var(--go); }
.path {
  margin: 0;
  color: var(--faint);
  font-size: 0.78rem;
}
.path code { font-family: var(--mono); font-size: 0.75rem; }

main {
  width: min(1080px, calc(100% - 1.6rem));
  margin: 0 auto 3rem;
}

.hero { padding: 2.2rem 0 1.1rem; }
.kicker {
  margin: 0 0 0.65rem;
  color: var(--jb);
  font: 700 0.78rem/1.3 var(--mono);
  letter-spacing: 0.04em;
}
h1 {
  margin: 0;
  font-size: clamp(2rem, 5.6vw, 3.5rem);
  letter-spacing: -0.045em;
  line-height: 1.08;
}
.lede {
  max-width: 42rem;
  color: var(--muted);
  font-size: 1.02rem;
}
.lede code, .note code, .rules-head code, .mod code {
  font-family: var(--mono);
  font-size: 0.86em;
  color: var(--go);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: 1.05rem 0 1.2rem;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.4rem;
  padding: 0 1rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font: 700 0.88rem/1 var(--sans);
  cursor: pointer;
  text-decoration: none;
  color: var(--ink);
  background: transparent;
}
.btn.primary {
  background: var(--go);
  color: #081018;
}
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost, .btn.tiny.ghost {
  border-color: var(--line);
  color: var(--ink);
}
.btn.tiny {
  min-height: 2rem;
  padding: 0 0.75rem;
  font-size: 0.78rem;
  background: rgba(0, 173, 216, 0.12);
  border-color: rgba(0, 173, 216, 0.28);
  color: var(--ink);
}
.quote {
  margin: 0;
  max-width: 42rem;
  padding: 1rem 1.1rem;
  background: var(--panel);
  border-left: 4px solid var(--jb);
  border-radius: 0 12px 12px 0;
}
.quote p { margin: 0 0 0.4rem; }
.quote cite { color: var(--faint); font-style: normal; font-size: 0.8rem; }
.quote a { color: var(--go); text-decoration: none; }

.why {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.7rem;
  margin-bottom: 1.4rem;
}
.why article {
  margin: 0;
  padding: 1rem 1.05rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.why h2 { margin: 0.2rem 0 0.35rem; font-size: 1.05rem; }
.why p { margin: 0; color: var(--muted); font-size: 0.88rem; }
.tag {
  margin: 0;
  color: var(--jb);
  font: 700 0.72rem/1 var(--mono);
  letter-spacing: 0.08em;
}

.bench {
  padding: 1rem;
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
}
.bench-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 0.8rem;
  margin-bottom: 0.85rem;
}
.mod, .cover {
  margin: 0;
  color: var(--muted);
  font-size: 0.8rem;
}
.mod span {
  margin-right: 0.4rem;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 0.72rem;
}
.versions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.8rem;
  margin-bottom: 0.85rem;
}
.versions p {
  margin: 0;
  color: var(--faint);
  font-size: 0.78rem;
}
.chips { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.chip {
  min-height: 1.9rem;
  padding: 0 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  color: var(--muted);
  font: 700 0.76rem/1 var(--mono);
  cursor: pointer;
}
.chip.is-on {
  background: rgba(0, 173, 216, 0.16);
  border-color: rgba(0, 173, 216, 0.45);
  color: var(--ink);
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.7rem;
}
.pane {
  min-width: 0;
  background: #0f1218;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 14px;
  overflow: hidden;
}
.pane header {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 0.75rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.pane h3 { margin: 0; font-size: 0.86rem; }
.file {
  margin-left: auto;
  color: var(--faint);
  font: 500 0.72rem/1 var(--mono);
}
.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}
.dot.warn { background: var(--warn); }
.dot.ok { background: var(--ok); }
.pane pre {
  margin: 0;
  padding: 0.9rem 0.95rem 1.05rem;
  overflow: auto;
  min-height: 11.5rem;
}
.pane code {
  font: 500 0.78rem/1.55 var(--mono);
  color: #d7deea;
  white-space: pre;
}
.pane.stale.is-dim code { opacity: 0.42; }
.pane.fresh.is-hot {
  border-color: rgba(126, 231, 135, 0.35);
  box-shadow: inset 0 0 0 1px rgba(126, 231, 135, 0.12);
}
.kw { color: #c77dbb; }
.fn { color: var(--go); }
.str { color: #6aab73; }
.cm { color: #6d7484; font-style: italic; }
.type { color: #d5b887; }

.rule-note {
  margin: 0.7rem 0 0;
  color: var(--muted);
  font-size: 0.84rem;
  min-height: 1.3em;
}

.rules { margin-top: 1.1rem; }
.rules-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.4rem 1rem;
  margin-bottom: 0.7rem;
}
.rules-head h2, .install-head h2, .note h2 {
  margin: 0;
  font-size: 1.2rem;
}
.rules-head p, .install-head p {
  margin: 0;
  color: var(--muted);
  font-size: 0.84rem;
}
.rule-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.55rem;
}
.rule {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.45rem 0.6rem;
  align-items: start;
  width: 100%;
  margin: 0;
  padding: 0.7rem 0.75rem;
  text-align: left;
  color: inherit;
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  cursor: pointer;
}
.rule:hover { border-color: rgba(0, 173, 216, 0.28); }
.rule.is-on { border-color: rgba(0, 173, 216, 0.5); background: rgba(0, 173, 216, 0.08); }
.rule.is-locked { opacity: 0.48; }
.rule h3 { margin: 0; font-size: 0.92rem; }
.rule p { margin: 0.15rem 0 0; color: var(--muted); font-size: 0.76rem; }
.badge {
  font: 700 0.68rem/1 var(--mono);
  color: var(--jb);
}
.check {
  width: 1.05rem;
  height: 1.05rem;
  margin-top: 0.12rem;
  accent-color: var(--go);
}

.install { margin-top: 1.6rem; }
.install-head { margin-bottom: 0.8rem; }
.agents {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 0.75rem;
}
.agent {
  min-height: 2.2rem;
  padding: 0 0.85rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  font: 700 0.82rem/1 var(--sans);
  cursor: pointer;
}
.agent.is-on {
  background: var(--ink);
  color: #12141a;
  border-color: transparent;
}
.term-wrap {
  padding: 0.85rem;
  background: #0c0e13;
  border: 1px solid var(--line);
  border-radius: 16px;
}
.term-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  margin-bottom: 0.65rem;
  color: var(--muted);
  font: 700 0.8rem/1 var(--mono);
}
.term-bar .btn { margin-left: 0; }
.term-bar span { margin-right: auto; }
.steps {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0 0 0.7rem;
  padding: 0;
  list-style: none;
}
.steps li {
  padding: 0.28rem 0.55rem;
  border-radius: 999px;
  border: 1px dashed rgba(255, 255, 255, 0.12);
  color: var(--faint);
  font: 500 0.72rem/1.3 var(--mono);
}
.steps li.is-done {
  border-style: solid;
  border-color: rgba(126, 231, 135, 0.35);
  color: var(--ok);
}
.steps li.is-now {
  border-style: solid;
  border-color: rgba(0, 173, 216, 0.45);
  color: var(--go);
}
.term {
  margin: 0;
  min-height: 8.2rem;
  padding: 0.75rem 0.8rem;
  background: #080a0e;
  border-radius: 10px;
  overflow: auto;
}
.term code {
  font: 500 0.78rem/1.55 var(--mono);
  color: #c9d3e2;
  white-space: pre-wrap;
}
.prompt { color: var(--go); }
.okline { color: var(--ok); }
.term-status {
  margin: 0.55rem 0 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.note {
  margin-top: 1.5rem;
  padding: 1.05rem 1.1rem;
  background: rgba(27, 30, 39, 0.7);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.note ul { margin: 0.45rem 0 0; padding-left: 1.15rem; color: var(--muted); }

.foot {
  width: min(1080px, calc(100% - 1.6rem));
  margin: 0 auto 1.6rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem 1.2rem;
  color: var(--muted);
  font-size: 0.82rem;
}
.foot a { color: var(--go); text-decoration: none; }
.foot a:hover { text-decoration: underline; }

@media (max-width: 860px) {
  .split, .why, .rule-list { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .nav { top: 0; width: 100%; border-radius: 0; }
  .path { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .pane, .rule, .chip, .agent { transition: none; }
}