:root {
  --bg: #f5f7fb;
  --panel: #ffffff;
  --panel-soft: #f8fafc;
  --ink: #172033;
  --muted: #66758b;
  --line: #dbe3ee;
  --line-strong: #aebacc;
  --accent: #2563eb;
  --accent-soft: #dbeafe;
  --used: #0f766e;
  --used-soft: #ccfbf1;
  --shared: #c2410c;
  --shared-soft: #ffedd5;
  --off: #7c3aed;
  --off-soft: #ede9fe;
  --danger: #b91c1c;
  --danger-soft: #fee2e2;
  --shadow: 0 16px 44px rgba(28, 43, 68, .10);
  --radius: 12px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background: linear-gradient(180deg, #eef4ff 0, var(--bg) 260px), var(--bg);
  font-family: "Inter", "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
}

.hero {
  min-height: 76px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 20px;
  padding: 0 32px;
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,.9);
  backdrop-filter: blur(16px);
}

h1 {
  margin: 0;
  font-size: 25px;
  line-height: 1.15;
  font-weight: 760;
  letter-spacing: 0;
}

.hero-left p {
  margin: 7px 0 0;
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
}

.hero-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.lang-switch {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px;
  background: var(--panel-soft);
}

.lang-switch button {
  min-width: 34px;
  height: 30px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 12px;
  font-weight: 800;
  cursor: pointer;
}

.lang-switch button[aria-pressed="true"] {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 6px 16px rgba(37,99,235,.22);
}

.brand-mark {
  display: flex;
  align-items: baseline;
  gap: 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 9px 14px;
  background: var(--panel-soft);
}

.brand-mark span { font-size: 20px; font-weight: 780; }
.brand-mark strong { color: var(--accent); font-size: 12px; font-weight: 800; letter-spacing: .08em; }

main {
  height: calc(100vh - 77px);
  min-height: 720px;
  padding: 18px;
  overflow: hidden;
}

.tool-layout {
  display: grid;
  grid-template-columns: 380px minmax(0, 1fr);
  gap: 18px;
  height: 100%;
}

.side-panel,
.main-panel {
  min-width: 0;
  min-height: 0;
}

.side-panel {
  display: flex;
  flex-direction: column;
  gap: 14px;
  overflow: auto;
  padding-right: 2px;
}

.main-panel {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 14px;
}

.panel,
.searchbox,
.legend {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255,255,255,.95);
  box-shadow: var(--shadow);
}

.panel {
  padding: 14px;
}

.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 760;
}

.section-heading strong {
  min-width: 26px;
  border-radius: 999px;
  padding: 3px 8px;
  background: #eef2f7;
  color: var(--ink);
  text-align: center;
}

.board-tabs {
  display: grid;
  gap: 8px;
}

.board-tab {
  width: 100%;
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  background: var(--panel-soft);
  color: var(--ink);
  font: inherit;
  font-weight: 720;
  cursor: pointer;
  text-align: left;
}

.board-tab strong {
  border-radius: 999px;
  padding: 4px 8px;
  background: #e2e8f0;
  color: #334155;
  font-size: 12px;
}

.board-tab[aria-pressed="true"] {
  border-color: #93b4ff;
  background: var(--accent-soft);
  color: #1d4ed8;
  box-shadow: 0 0 0 3px rgba(37,99,235,.10);
}

.active-board .eyebrow,
.detail-pin {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  margin-bottom: 10px;
  border-radius: 999px;
  padding: 5px 10px;
  background: var(--accent-soft);
  color: #1d4ed8;
  font-size: 12px;
  font-weight: 800;
}

.active-board h2,
.detail h2,
.summary h2 {
  margin: 0 0 9px;
  font-size: 19px;
  line-height: 1.2;
  font-weight: 760;
  letter-spacing: 0;
}

.active-board p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.metric-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 12px;
}

.metric-row span {
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 8px;
  background: var(--panel-soft);
  color: var(--muted);
  font-size: 11px;
  font-weight: 720;
  text-align: center;
}

.metric-row b {
  display: block;
  color: var(--ink);
  font-size: 16px;
}

.module-list {
  display: grid;
  gap: 10px;
}

.module-card {
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  background: var(--panel-soft);
}

.module-card h3 {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin: 0;
  padding: 10px 11px;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
  font-weight: 760;
}

.module-card h3 span {
  color: var(--muted);
  font-size: 12px;
}

.module-rows {
  display: grid;
  gap: 1px;
}

.usage-row,
.usage-line {
  border: 0;
  background: #fff;
  color: var(--ink);
  font: inherit;
  cursor: pointer;
  text-align: left;
}

.usage-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 76px 48px;
  gap: 8px;
  align-items: center;
  padding: 8px 10px;
  font-size: 12px;
}

.usage-row:hover,
.usage-line:hover {
  background: #f8fafc;
}

.usage-row.selected,
.usage-line.selected {
  background: #eff6ff;
  box-shadow: inset 3px 0 0 var(--accent);
}

.usage-signal,
.usage-gpio {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.usage-gpio {
  font-weight: 760;
}

.usage-row small,
.usage-line span:last-child {
  justify-self: end;
  border-radius: 999px;
  padding: 3px 7px;
  font-size: 10px;
  font-weight: 780;
}

.mapped small,
.mapped span:last-child { background: var(--used-soft); color: var(--used); }
.shared small,
.shared span:last-child { background: var(--shared-soft); color: var(--shared); }
.off-header small,
.off-header span:last-child { background: var(--off-soft); color: var(--off); }
.meta small,
.meta span:last-child { background: #eef2f7; color: #64748b; }

.map-toolbar {
  display: grid;
  grid-template-columns: minmax(260px, 380px) minmax(0, 1fr);
  gap: 12px;
}

.searchbox {
  height: 44px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 13px;
}

.searchbox:focus-within {
  border-color: #93b4ff;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, .12), var(--shadow);
}

.searchbox span {
  color: var(--accent);
  font-size: 20px;
  font-weight: 800;
}

input {
  width: 100%;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: 13px;
}

input::placeholder { color: #8b98aa; }

.legend {
  min-height: 44px;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  align-items: center;
  padding: 8px 10px;
}

.legend button,
.chip {
  min-height: 21px;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 4px 9px;
  color: #172033;
  font: inherit;
  font-size: 10px;
  font-weight: 720;
  line-height: 1.1;
  white-space: nowrap;
  text-align: center;
}

.legend button { cursor: pointer; }
.legend button[aria-pressed="true"] { border-color: currentColor; box-shadow: 0 0 0 3px rgba(37,99,235,.10); }

.c-pin,
.c-gpio { background: #edf1f7; color: #334155; }
.c-used { background: var(--used-soft); color: var(--used); }
.c-uart { background: #dbeafe; color: #1d4ed8; }
.c-i2c { background: #dcfce7; color: #15803d; }
.c-qspi { background: #ffedd5; color: #c2410c; }
.c-i2s { background: #e0f2fe; color: #0369a1; }
.c-jtag { background: #f3e8ff; color: #7e22ce; }
.c-pwm { background: #ccfbf1; color: #0f766e; }
.c-pdm { background: #e0f7fa; color: #087286; }
.c-mmc { background: #fef3c7; color: #a16207; }
.c-adc { background: #ede9fe; color: #5b21b6; }
.c-power { background: var(--danger-soft); color: var(--danger); }
.c-gnd { background: #e5e7eb; color: #111827; }
.c-func { background: #eef2f7; color: #475569; }

.pin-stage {
  min-width: 0;
  min-height: 0;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 14px;
  background:
    linear-gradient(90deg, rgba(148,163,184,.16) 1px, transparent 1px) 0 0 / 24px 24px,
    linear-gradient(0deg, rgba(148,163,184,.16) 1px, transparent 1px) 0 0 / 24px 24px,
    #fff;
  box-shadow: var(--shadow);
  overflow: auto;
}

.pinmap {
  width: min(1120px, 100%);
  min-width: 900px;
  padding: 8px 18px;
  display: grid;
  grid-template-columns: minmax(220px, 1fr) 92px 136px 136px 92px minmax(220px, 1fr);
  grid-auto-rows: 27px;
  align-items: center;
  gap: 3px 8px;
}

.map-title {
  grid-column: 1 / -1;
  justify-self: center;
  width: 270px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid #bfdbfe;
  border-radius: 14px;
  background: linear-gradient(180deg, #eff6ff, #dbeafe);
  color: #1e3a8a;
  text-align: center;
  box-shadow: 0 8px 22px rgba(37,99,235,.12);
}

.map-title strong { font-size: 17px; line-height: 1; }
.map-title span { color: var(--accent); font-size: 11px; font-weight: 800; }

.chips {
  display: flex;
  min-width: 0;
  gap: 5px;
  align-items: center;
}

.chips.left { justify-content: flex-end; }
.chips.right { justify-content: flex-start; }
.chips .chip { max-width: 72px; overflow: hidden; text-overflow: ellipsis; }

.wire-pin {
  display: flex;
  align-items: center;
  height: 100%;
}

.wire-pin.left { justify-content: flex-end; }
.wire-pin.right { justify-content: flex-start; }
.wire { height: 2px; flex: 1 1 auto; background: #a8b8d0; }

.num {
  width: 32px;
  height: 23px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 7px;
  background: #fff;
  color: #334155;
  font-size: 11px;
  font-weight: 800;
  cursor: pointer;
  user-select: none;
}

.core {
  height: 100%;
  min-width: 0;
  display: grid;
  grid-template-rows: 1fr auto;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: #f1f5f9;
  color: #172033;
  font-size: 11px;
  font-weight: 760;
  overflow: hidden;
  cursor: pointer;
  user-select: none;
}

.core span,
.core small {
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.core small {
  display: none;
  width: 100%;
  padding: 0 5px 2px;
  color: var(--used);
  font-size: 8px;
  line-height: 1;
  font-weight: 800;
}

.core.used {
  border-color: #5eead4;
  background: var(--used-soft);
  color: #134e4a;
}

.core.used small { display: block; }

.core.shared {
  border-color: #fdba74;
  background: var(--shared-soft);
  color: #9a3412;
}

.core.shared small { color: var(--shared); }

.core.gnd { background: #e5e7eb; color: #111827; }
.core.power { background: var(--danger-soft); color: var(--danger); border-color: #fecaca; }
.core.adc { background: var(--off-soft); color: #5b21b6; border-color: #ddd6fe; }

.core.selected,
.num.selected,
.chip.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37,99,235,.18);
  z-index: 2;
}

.core.paired { box-shadow: inset 0 0 0 2px rgba(37,99,235,.22); }

.chips.muted,
.core.muted,
.wire-pin.muted {
  opacity: .18;
}

.hidden { display: none !important; }

.detail dl {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr);
  gap: 8px 10px;
  margin: 0 0 13px;
  font-size: 12px;
}

.detail dt { color: var(--muted); font-weight: 700; }
.detail dd { margin: 0; min-width: 0; overflow-wrap: anywhere; font-weight: 680; }

.detail-tags,
.function-list {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.function-list { margin-top: 12px; }

.func-row {
  width: 100%;
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr);
  gap: 9px;
  align-items: start;
  border-top: 1px solid var(--line);
  padding-top: 9px;
  font-size: 12px;
}

.func-row:first-child { border-top: 0; padding-top: 0; }
.func-row p { margin: 0; color: #536173; line-height: 1.4; overflow-wrap: anywhere; }

.usage-detail {
  margin: 12px 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  background: var(--panel-soft);
  font-size: 12px;
}

.usage-detail h3 {
  margin: 0 0 8px;
  font-size: 12px;
  color: var(--muted);
}

.usage-detail p { margin: 5px 0; line-height: 1.4; }
.usage-detail.empty { color: var(--muted); }

.pair-box {
  margin: 13px 0 0;
  border: 1px solid #bfdbfe;
  border-radius: 8px;
  padding: 10px 11px;
  background: #eff6ff;
  color: #1e3a8a;
  font-size: 12px;
  line-height: 1.5;
}

.bottom-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) 300px;
  gap: 14px;
  min-height: 178px;
}

.usage-table-panel {
  min-width: 0;
}

.usage-table {
  max-height: 190px;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
}

.usage-head,
.usage-line {
  display: grid;
  grid-template-columns: 1.1fr 1fr 110px 80px 66px;
  gap: 10px;
  align-items: center;
}

.usage-head {
  position: sticky;
  top: 0;
  z-index: 1;
  padding: 9px 10px;
  background: #f1f5f9;
  color: var(--muted);
  font-size: 11px;
  font-weight: 780;
}

.usage-line {
  width: 100%;
  padding: 8px 10px;
  border-top: 1px solid var(--line);
  font-size: 12px;
}

.usage-line span {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.summary {
  min-width: 0;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.summary-item {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 7px 9px;
  background: var(--panel-soft);
  color: #334155;
  font-size: 12px;
  font-weight: 720;
}

.summary-item strong { color: var(--ink); }

.footnote {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.5;
}

@media (max-width: 1180px) {
  main { height: auto; min-height: 0; overflow: visible; padding: 12px; }
  .tool-layout { grid-template-columns: 1fr; height: auto; }
  .side-panel { overflow: visible; }
  .main-panel { grid-template-rows: auto auto auto; }
  .pin-stage { min-height: 620px; }
}

@media (max-width: 760px) {
  .hero { grid-template-columns: 1fr; padding: 14px 18px; }
  .hero-right { justify-content: flex-start; }
  .brand-mark { display: none; }
  h1 { font-size: 22px; }
  .map-toolbar,
  .bottom-grid { grid-template-columns: 1fr; }
  .usage-head,
  .usage-line { grid-template-columns: 1fr 1fr 88px; }
  .usage-head span:nth-child(4),
  .usage-head span:nth-child(5),
  .usage-line span:nth-child(4),
  .usage-line span:nth-child(5) { display: none; }
}