:root {
  --navy: #0b1f3a;
  --teal: #1b6b6b;
  --amber: #c46b1a;
  --red: #a32d2d;
  --green: #2e6b3f;
  --ink: #1a1a1a;
  --muted: #5a6470;
  --line: #d5dbe0;
  --pale: #f4f6f8;
  --white: #fff;
  --font: "PingFang TC", "Noto Sans TC", "Hiragino Sans", sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; font-family: var(--font); color: var(--ink); background: #e8eef2; }
body { min-height: 100vh; display: flex; flex-direction: column; }
a { color: var(--teal); }
.banner {
  background: var(--amber);
  color: var(--white);
  font-size: 13px;
  font-weight: 600;
  padding: 8px 20px;
}
header.top {
  background: var(--navy);
  color: var(--white);
  padding: 12px 20px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: end;
}
header.top h1 { margin: 4px 0 0; font-size: 20px; }
header.top .sub { margin: 2px 0 0; color: #a8d0d0; font-size: 13px; }
.home { color: #a8d0d0; font-size: 12px; text-decoration: none; }
.tools { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
button, .btn {
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  padding: 7px 12px;
  border: 0;
  border-radius: 4px;
  background: var(--teal);
  color: var(--white);
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}
.btn.ghost, button.ghost {
  background: transparent;
  border: 1px solid #6a849c;
}
.stage-wrap {
  flex: 1;
  display: grid;
  grid-template-columns: 48px 1fr 48px;
  gap: 8px;
  padding: 12px 8px 8px;
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
}
.stage {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  min-height: 64vh;
  padding: 22px 26px 28px;
  overflow: auto;
  outline: none;
}
.stage.cover {
  background: var(--navy);
  color: var(--white);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.kicker { color: #a8d0d0; font-size: 13px; letter-spacing: 0.04em; margin: 0 0 8px; }
.stage h2 { margin: 0 0 14px; font-size: 26px; line-height: 1.25; color: var(--navy); }
.stage.cover h2 { color: var(--white); font-size: 32px; }
.badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 99px;
  margin-bottom: 10px;
}
.badge.attach { background: var(--teal); color: var(--white); }
.badge.extra { background: var(--amber); color: var(--white); }
.badge.mix { background: #16304f; color: #a8d0d0; border: 1px solid #1b6b6b; }
.cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 12px 0;
}
.card {
  background: var(--pale);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 12px 14px;
}
.card h3 { margin: 0 0 8px; font-size: 15px; color: var(--teal); }
.stage ul { margin: 0; padding-left: 18px; }
.stage li { margin: 5px 0; font-size: 15px; line-height: 1.45; }
.note {
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: 6px;
  background: #fdf3e6;
  border-left: 5px solid var(--amber);
  font-size: 15px;
  line-height: 1.45;
}
.note.warn { background: #fbeeee; border-left-color: var(--red); }
.note.info { background: #e8f2f2; border-left-color: var(--teal); }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  margin: 10px 0 14px;
}
th, td { border: 1px solid var(--line); padding: 7px 8px; vertical-align: top; text-align: left; }
th { background: var(--navy); color: var(--white); }
tr:nth-child(even) td { background: var(--pale); }
.nav-arrow {
  background: var(--navy);
  color: var(--white);
  font-size: 28px;
  border: 0;
  border-radius: 6px;
  cursor: pointer;
  align-self: center;
  height: 64px;
  width: 48px;
}
.bar {
  display: grid;
  grid-template-columns: 180px 1fr 1fr;
  gap: 12px;
  align-items: center;
  padding: 8px 20px 16px;
  color: var(--muted);
  font-size: 13px;
}
#slider { width: 100%; }
.toc {
  position: fixed;
  top: 90px;
  right: 16px;
  width: min(360px, calc(100% - 32px));
  max-height: 70vh;
  overflow: auto;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  z-index: 5;
  box-shadow: 0 8px 24px rgba(11, 31, 58, 0.15);
}
.toc button {
  display: block;
  width: 100%;
  text-align: left;
  background: transparent;
  color: var(--ink);
  font-weight: 500;
  margin: 2px 0;
}
.toc button.active { background: #e8f2f2; color: var(--teal); }
@media (max-width: 900px) {
  .stage-wrap { grid-template-columns: 1fr; }
  .nav-arrow { display: none; }
  .cards { grid-template-columns: 1fr; }
  .bar { grid-template-columns: 1fr; }
  header.top { flex-direction: column; align-items: start; }
}
@media print {
  .banner, header.top, .nav-arrow, .bar, .toc { display: none !important; }
  .stage { border: 0; min-height: auto; overflow: visible; }
}