@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600&family=IBM+Plex+Sans:wght@400;500;600;700&display=swap');

:root {
  --bg: #0b0e13;
  --panel: #141920;
  --ink: #e8eaee;
  --muted: #9aa3af;
  --gold: #e0c07a;
  --gold-2: #c9a25a;
  --cyan: #7eb3c9;
  --line: #3a4250;
  --sans: 'IBM Plex Sans', 'Segoe UI', system-ui, sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
}

a {
  color: var(--cyan);
}

a:hover {
  color: var(--gold);
}

.skip {
  position: absolute;
  left: 12px;
  top: -40px;
  background: var(--gold);
  color: #1c232c;
  padding: 6px 10px;
  z-index: 2;
}

.skip:focus {
  top: 12px;
}

.top {
  padding: 20px 24px 8px;
  border-bottom: 1px solid var(--line);
  background: #1c232c;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: #f6edd6;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.04em;
  font-size: 1.35rem;
}

.brand img {
  border-radius: 10px;
  box-shadow: 0 0 0 1px rgba(224, 192, 122, 0.35), 0 0 24px rgba(224, 192, 122, 0.22);
}

.phonetic {
  margin: 8px 0 14px;
  color: var(--gold-2);
  font-size: 13px;
}

.guides {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  padding-bottom: 14px;
}

.guides a {
  color: var(--muted);
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.guides a[aria-current='page'],
.guides a:hover {
  color: var(--gold);
}

main {
  max-width: 52rem;
  margin: 0 auto;
  padding: 32px 20px 56px;
}

h1 {
  margin: 0 0 12px;
  font-size: clamp(1.8rem, 4vw, 2.45rem);
  color: #f6edd6;
  letter-spacing: 0.02em;
}

h2 {
  margin: 1.6rem 0 0.55rem;
  font-size: 1.2rem;
  color: var(--gold);
}

h3 {
  margin: 1rem 0 0.35rem;
  font-size: 1.02rem;
}

p,
li {
  line-height: 1.65;
  color: #d5dae2;
}

.lead {
  font-size: 1.05rem;
  color: #e8eaee;
}

.cta-band {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 1.25rem 0;
}

.cta {
  display: inline-block;
  background: #f3ead6;
  color: #6e5424;
  text-decoration: none;
  font-weight: 700;
  padding: 10px 14px;
  border: 1px solid #b79a5a;
  border-radius: 2px;
}

.cta:hover {
  color: #3d2e12;
}

.cta.ghost {
  background: transparent;
  color: var(--gold);
  border-color: var(--line);
}

.eq {
  margin: 1rem 0;
  padding: 12px 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
}

.eq p {
  font-family: var(--mono);
  margin: 0.25rem 0;
  color: #f6edd6;
}

.eq figcaption {
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
}

.steps {
  padding-left: 1.2rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0 1.2rem;
  font-size: 0.95rem;
}

caption {
  caption-side: top;
  text-align: left;
  color: var(--muted);
  padding-bottom: 6px;
  font-size: 13px;
}

th,
td {
  border: 1px solid var(--line);
  padding: 8px 10px;
  text-align: left;
}

th {
  background: #1c232c;
  color: var(--gold);
  font-weight: 600;
}

.faq {
  margin-top: 2rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--line);
}

.faq-item p {
  margin-top: 0.25rem;
}

.player {
  margin: 1rem 0 1.4rem;
  background: #000;
  border: 1px solid var(--line);
}

.player video {
  display: block;
  width: 100%;
  max-height: 70vh;
}

.foot {
  max-width: 52rem;
  margin: 0 auto;
  padding: 8px 20px 40px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.foot .mission {
  color: #c5cad3;
}

@media (max-width: 640px) {
  .top {
    padding: 16px 16px 4px;
  }

  main {
    padding: 24px 16px 40px;
  }
}