:root {
  --bg: #f4f7f8;
  --paper: #ffffff;
  --ink: #142028;
  --muted: #5c6e78;
  --line: #d5e1e6;
  --ice: #0b7f96;
  --ice-soft: #e7f6f8;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Source Sans 3", "Segoe UI", "PingFang TC", "Noto Sans TC", sans-serif;
  line-height: 1.6;
}
a { color: var(--ice); }
a:hover { text-decoration: none; }
.top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 18px 22px;
  background: #fff;
  border-bottom: 1px solid var(--line);
}
.brand {
  color: inherit;
  text-decoration: none;
  font-family: Outfit, "Source Sans 3", sans-serif;
  font-weight: 700;
  letter-spacing: -0.03em;
  font-size: 1.05rem;
}
.brand span { color: var(--ice); font-weight: 650; }
.top nav { display: flex; flex-wrap: wrap; gap: 14px; font-size: 0.92rem; }
.top nav a { color: var(--muted); text-decoration: none; }
.top nav a[aria-current="page"] { color: var(--ink); font-weight: 700; }
.wrap {
  max-width: 46rem;
  margin: 0 auto;
  padding: 36px 20px 72px;
}
article {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: clamp(22px, 4vw, 40px);
}
h1 {
  font-family: Outfit, "Source Sans 3", sans-serif;
  font-size: clamp(1.8rem, 4vw, 2.35rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin: 0 0 8px;
}
.meta { color: var(--muted); margin: 0 0 18px; font-size: 0.92rem; }
.zh {
  background: var(--ice-soft);
  border-radius: 12px;
  padding: 12px 14px;
  color: #24515c;
  font-size: 0.95rem;
}
h2 {
  font-family: Outfit, "Source Sans 3", sans-serif;
  font-size: 1.12rem;
  margin: 1.6rem 0 0.4rem;
  letter-spacing: -0.02em;
}
p { margin: 0.55rem 0; font-size: 1.02rem; }
.chart-slot {
  margin: 16px 0 8px;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  background: #fff;
  min-height: 520px;
}
.chart-slot .tradingview-widget-container { height: 520px; }
.chart-credit {
  margin: 8px 2px 0;
  font-size: 0.92rem;
  color: var(--muted);
}
footer.colophon {
  max-width: 46rem;
  margin: 0 auto;
  padding: 0 20px 40px;
  color: var(--muted);
  font-size: 0.85rem;
}
@media (max-width: 640px) {
  .top { align-items: flex-start; flex-direction: column; }
}