:root {
  --bg: #101614;
  --bg-raise: #17211c;
  --ink: #e7efe9;
  --muted: #a3b5ac;
  --line: #2a3b34;
  --gold: #e4b15a;
  --gold-ink: #1a1408;
  --teal: #8fd0c6;
  --clay: #e0a090;
  --focus: #f2d48a;
  --sans: "Segoe UI", "Helvetica Neue", sans-serif;
  --mono: Consolas, "Courier New", monospace;
  --pad: clamp(1rem, 3vw, 1.5rem);
  --max: 72rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% -10%, rgba(228, 177, 90, 0.14), transparent 32%),
    var(--bg);
  font-family: var(--sans);
  font-size: 1.05rem;
  line-height: 1.65;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.skip {
  position: absolute;
  left: 1rem;
  top: -4rem;
  background: var(--gold);
  color: var(--gold-ink);
  padding: 0.55rem 0.85rem;
  z-index: 30;
}

.skip:focus {
  top: 0.6rem;
}

.desk {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem var(--pad);
  background: rgba(16, 22, 20, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.brand img {
  width: 32px;
  height: 32px;
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--bg-raise);
  color: var(--ink);
  border-radius: 8px;
  min-height: 44px;
  padding: 0 0.85rem;
  font: inherit;
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.35rem 1rem;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
}

.nav a:hover {
  color: var(--ink);
}

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.7rem 1.15rem;
  border-radius: 999px;
  background: var(--gold);
  color: var(--gold-ink);
  text-decoration: none;
  font-weight: 700;
}

.cta:hover {
  filter: brightness(1.06);
}

.nav .cta {
  color: var(--gold-ink);
  min-height: 42px;
}

main {
  width: min(var(--max), calc(100% - 2 * var(--pad)));
  margin: 0 auto;
}

section {
  scroll-margin-top: 5.2rem;
  padding: 3.2rem 0;
}

.hero {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2rem;
  align-items: center;
  padding-top: 2.4rem;
}

.kicker {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.8rem;
  color: var(--gold);
  font-family: var(--mono);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.lamp {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(228, 177, 90, 0.18);
}

h1,
h2,
h3 {
  line-height: 1.25;
  font-weight: 700;
}

h1 {
  margin: 0 0 1rem;
  font-size: clamp(1.9rem, 4vw, 3rem);
  max-width: 16ch;
}

h2 {
  margin: 0 0 1rem;
  font-size: clamp(1.45rem, 2.4vw, 2rem);
}

h3 {
  margin: 0 0 0.45rem;
  font-size: 1.12rem;
}

.lead {
  margin: 0 0 1.2rem;
  max-width: 42rem;
  color: var(--muted);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  min-height: 48px;
}

.ghost {
  color: var(--muted);
  text-decoration: none;
  min-height: 48px;
  display: inline-flex;
  align-items: center;
}

.panel {
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 0.85rem;
}

.panel img {
  width: 100%;
  height: auto;
  border-radius: 12px;
}

.panel figcaption {
  margin-top: 0.7rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.82rem;
}

.band {
  border-top: 1px solid var(--line);
}

.steps {
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.9rem;
}

.steps li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.9rem;
  padding: 1rem;
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: 14px;
}

.num {
  width: 2rem;
  height: 2rem;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: var(--gold);
  color: var(--gold-ink);
  font-weight: 700;
}

.methods {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.9rem;
  margin-top: 1.2rem;
}

.methods article {
  background: var(--bg-raise);
  border-top: 3px solid var(--teal);
  border-radius: 14px;
  padding: 1rem 1rem 0.4rem;
}

.sheet {
  width: 100%;
  border-collapse: collapse;
  margin: 1.2rem 0;
  font-size: 0.98rem;
}

.sheet th,
.sheet td {
  text-align: left;
  padding: 0.8rem 0.7rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.sheet th {
  width: 28%;
  color: var(--gold);
  font-weight: 600;
}

.notice {
  background: #241c18;
  border: 1px solid #5a3a30;
  border-radius: 16px;
  padding: 1.2rem 1.2rem 0.4rem;
}

.notice h2 {
  color: var(--clay);
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
}

.split article {
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem 1rem 0.3rem;
}

.foot {
  border-top: 1px solid var(--line);
  padding: 2rem var(--pad) 2.4rem;
}

.foot-grid {
  width: min(var(--max), 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 1.2rem;
}

.foot h2 {
  font-size: 1rem;
  margin: 0 0 0.6rem;
}

.foot ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.foot li + li {
  margin-top: 0.35rem;
}

.foot p,
.fine {
  color: var(--muted);
  margin: 0.35rem 0 0;
}

.stamp {
  width: min(var(--max), calc(100% - 2 * var(--pad)));
  margin: 0 auto;
  padding-bottom: 1.4rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.85rem;
}

@media (max-width: 860px) {
  .nav-toggle {
    display: inline-flex;
    align-items: center;
  }

  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    padding: 0.8rem var(--pad) 1rem;
    background: #101614;
    border-bottom: 1px solid var(--line);
  }

  .nav.is-open {
    display: flex;
  }

  .nav a,
  .nav .cta {
    min-height: 44px;
  }

  .hero,
  .methods,
  .split,
  .foot-grid {
    grid-template-columns: 1fr;
  }

  h1 {
    max-width: none;
  }
}