:root {
  --navy: #00078e;
  --navy-deep: #00043f;
  --cyan: #4dd1ff;
  --cyan-deep: #17a6d6;
  --off-white: #fffaff;
  --ink: #0d1330;
  --muted: #5b6683;
  --line: #e5eaf6;
  --bg: #f4f7fe;
  --paper: #ffffff;
  --radius: 20px;
  --radius-sm: 12px;
  --maxw: 780px;
  --font-display: "Sora", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.wordmark { font-family: var(--font-display); font-weight: 800; letter-spacing: -0.03em; }
.wm-fid { color: var(--navy); }
.wm-stamp { color: var(--cyan-deep); }

.top-bar {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  padding: 18px 24px;
}
.top-bar .inner { max-width: var(--maxw); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand img { height: 30px; width: auto; }
.brand .wordmark { font-size: 1.3rem; }
.back-link { color: var(--muted); font-size: 0.92rem; font-weight: 500; text-decoration: none; }
.back-link:hover { color: var(--navy); }

main {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 48px 24px 80px;
}

h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  letter-spacing: -0.02em;
  margin-bottom: 8px;
  color: var(--navy);
}

.updated { color: var(--muted); font-size: 0.92rem; margin-bottom: 40px; }

h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.3rem;
  margin: 40px 0 14px;
  color: var(--ink);
}

h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  margin: 24px 0 10px;
  color: var(--ink);
}

p, li { color: var(--muted); font-size: 1rem; }
p { margin-bottom: 14px; }
strong { color: var(--ink); }

ul, ol { margin: 0 0 16px 22px; }
li { margin-bottom: 8px; }

a { color: var(--navy); text-decoration: underline; }
a:hover { color: var(--cyan-deep); }

table { width: 100%; border-collapse: collapse; margin: 18px 0 24px; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius-sm); overflow: hidden; }
th, td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); font-size: 0.92rem; vertical-align: top; }
th { font-family: var(--font-display); background: var(--bg); color: var(--ink); }
td { color: var(--muted); }
tr:last-child td { border-bottom: none; }

.callout {
  background: #fff8e1;
  border: 1px solid #f0d98a;
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  margin: 20px 0;
  font-size: 0.94rem;
  color: #6b5300;
}
.callout strong { color: #4a3900; }

.todo {
  background: #ffecec;
  border: 1px dashed #e08a8a;
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  margin: 16px 0;
  font-size: 0.9rem;
  color: #8a1f1f;
}
.todo strong { color: #6b1414; }

footer {
  border-top: 1px solid var(--line);
  padding: 30px 24px;
  text-align: center;
  color: var(--muted);
  font-size: 0.88rem;
}
footer a { margin: 0 8px; }

@media (max-width: 480px) {
  .top-bar { padding: 14px 16px; }
  .top-bar .inner { flex-wrap: wrap; justify-content: center; gap: 8px; text-align: center; }
  .brand .wordmark { font-size: 1.15rem; }
  .back-link { font-size: 0.85rem; }
  main { padding: 36px 16px 60px; }
  th, td { padding: 10px 10px; font-size: 0.86rem; }
}