:root {
  --bg: #f6f4ee;
  --panel: #ffffff;
  --ink: #202426;
  --muted: #66706e;
  --line: #d9dfdc;
  --accent: #176b5b;
  --accent-soft: #e2eee9;
  --warm: #c47a42;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", sans-serif;
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }

main {
  width: min(100% - 32px, 1180px);
  margin: 0 auto;
  padding: 34px 0 64px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  margin-bottom: 30px;
}

.top-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.back {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  color: var(--muted);
  font-weight: 760;
}

.badge {
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 820;
}

h1 {
  max-width: 850px;
  margin: 0 0 14px;
  font-size: clamp(2.2rem, 5vw, 4.8rem);
  line-height: 1.02;
}

.lead {
  max-width: 820px;
  margin: 0 0 26px;
  color: var(--muted);
  font-size: 1.08rem;
}

.meta-grid,
.screen-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 22px 0;
}

.meta-card,
.panel,
.screen {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.meta-card,
.panel {
  padding: 18px;
}

.meta-card span {
  display: block;
  color: var(--muted);
  font-size: 0.86rem;
}

.meta-card strong {
  display: block;
  margin-top: 6px;
  color: var(--accent);
  font-size: 1.28rem;
}

.section-title {
  margin: 34px 0 14px;
  font-size: clamp(1.55rem, 3vw, 2.45rem);
}

.screen {
  overflow: hidden;
}

.screen-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  background: #fbfcfb;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 760;
}

.wireframe {
  display: grid;
  gap: 10px;
  min-height: 390px;
  padding: 14px;
}

.wire-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.wire-box,
.wire-button,
.wire-table,
.wire-chart {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 720;
}

.wire-box {
  min-height: 54px;
  padding: 12px;
}

.wire-button {
  display: inline-flex;
  min-height: 36px;
  align-items: center;
  justify-content: center;
  padding: 0 12px;
  background: var(--accent-soft);
  color: var(--accent);
}

.wire-table {
  display: grid;
  gap: 8px;
  padding: 12px;
}

.wire-table div {
  min-height: 34px;
  border-radius: 6px;
  background: #eef4f2;
  padding: 7px 9px;
}

.wire-chart {
  display: grid;
  gap: 8px;
  padding: 12px;
}

.bar {
  height: 12px;
  border-radius: 999px;
  background: #d9dfdc;
  overflow: hidden;
}

.bar span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--accent);
}

.flow-list,
.rule-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.flow-list li,
.rule-list li {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
  color: var(--muted);
}

.flow-list strong,
.rule-list strong {
  color: var(--accent);
}

@media (max-width: 860px) {
  main {
    width: min(100% - 24px, 1180px);
  }

  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .meta-grid,
  .screen-grid,
  .wire-row {
    grid-template-columns: 1fr;
  }
}