:root {
  --bg: #eef3ef;
  --paper: #fbfcf8;
  --ink: #151f29;
  --muted: #5f6c78;
  --line: #d7e0dc;
  --green: #0f766e;
  --blue: #2458b8;
  --amber: #b45309;
  --red: #b42318;
  --violet: #6653a6;
  --soft-green: #e1f1ed;
  --soft-blue: #e6efff;
  --soft-amber: #fff0d5;
  --soft-red: #ffe6e0;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
}

body {
  display: grid;
  place-items: center;
}

.poster {
  width: 1600px;
  min-height: 2400px;
  padding: 82px;
  background:
    linear-gradient(120deg, rgba(15, 118, 110, 0.12), transparent 36%),
    linear-gradient(180deg, #ffffff 0%, var(--paper) 100%);
  overflow: hidden;
}

.poster-header {
  display: grid;
  gap: 18px;
  padding-bottom: 38px;
  border-bottom: 3px solid var(--line);
}

.poster-header p {
  margin: 0;
  color: var(--green);
  font-size: 28px;
  font-weight: 950;
  text-transform: uppercase;
}

h1 {
  max-width: 1320px;
  margin: 0;
  font-size: 92px;
  line-height: 1.04;
  letter-spacing: 0;
}

.summary {
  max-width: 1320px;
  color: #3e4c58;
  font-size: 34px;
  line-height: 1.42;
  font-weight: 650;
}

.flow {
  display: grid;
  grid-template-columns: 1fr 230px 1fr;
  gap: 24px;
  align-items: center;
  margin-top: 46px;
}

.block,
.bottlenecks article,
.mini-grid div,
.signals {
  border: 3px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 26px 70px rgba(27, 42, 58, 0.11);
}

.block {
  min-height: 330px;
  padding: 36px;
  border-left-width: 16px;
}

.block span {
  display: inline-flex;
  margin-bottom: 18px;
  padding: 10px 16px;
  border-radius: 6px;
  font-size: 24px;
  font-weight: 950;
}

.block h2,
.signals h2 {
  margin: 0 0 18px;
  font-size: 42px;
  line-height: 1.14;
  letter-spacing: 0;
}

.block p,
.bottlenecks p {
  margin: 0;
  color: var(--muted);
  font-size: 28px;
  line-height: 1.42;
  font-weight: 560;
}

.demand {
  border-left-color: var(--violet);
}

.demand span {
  color: var(--violet);
  background: #eeeafd;
}

.compute {
  border-left-color: var(--blue);
}

.compute span {
  color: var(--blue);
  background: var(--soft-blue);
}

.system {
  border-left-color: var(--amber);
}

.system span {
  color: var(--amber);
  background: var(--soft-amber);
}

.connector {
  display: grid;
  place-items: center;
  min-height: 86px;
  padding: 18px;
  border: 3px dashed #a9b8b1;
  border-radius: 999px;
  color: #32424d;
  text-align: center;
  font-size: 24px;
  font-weight: 950;
  background: rgba(255, 255, 255, 0.72);
}

.bottlenecks {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 34px;
}

.bottlenecks article {
  min-height: 390px;
  padding: 30px;
}

.bottlenecks strong {
  display: block;
  margin-bottom: 10px;
  font-size: 35px;
  line-height: 1.12;
}

.bottlenecks span {
  display: inline-flex;
  margin-bottom: 22px;
  padding: 8px 12px;
  border-radius: 6px;
  color: var(--green);
  background: var(--soft-green);
  font-size: 21px;
  font-weight: 900;
}

.system-row {
  display: grid;
  grid-template-columns: 1fr 0.86fr;
  gap: 24px;
  margin-top: 34px;
  align-items: stretch;
}

.mini-grid {
  display: grid;
  gap: 18px;
}

.mini-grid div {
  display: grid;
  align-content: center;
  gap: 8px;
  min-height: 98px;
  padding: 24px 28px;
}

.mini-grid strong {
  font-size: 34px;
}

.mini-grid small {
  color: var(--muted);
  font-size: 24px;
  font-weight: 700;
}

.signals {
  margin-top: 38px;
  padding: 34px;
  border-left: 16px solid var(--red);
}

.signals h2 {
  font-size: 46px;
}

.signal-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.signal-grid div {
  min-height: 170px;
  padding: 24px;
  border: 2px solid var(--line);
  border-radius: 8px;
  background: #fffdfb;
}

.signal-grid b {
  display: block;
  margin-bottom: 12px;
  color: #1a2631;
  font-size: 28px;
}

.signal-grid span {
  color: var(--muted);
  font-size: 23px;
  line-height: 1.35;
  font-weight: 620;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 30px;
  margin-top: 42px;
  padding-top: 24px;
  border-top: 3px solid var(--line);
  color: var(--muted);
  font-size: 24px;
  font-weight: 800;
}