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

:root {
  --bg0-h: #1d2021;
  --bg0: #282828;
  --bg1: #3c3836;
  --bg2: #504945;
  --bg4: #7c6f64;
  --fg: #ebdbb2;
  --fg3: #bdae93;
  --fg4: #a89984;
  --yellow: #fabd2f;
  --green: #b8bb26;
  --aqua: #8ec07c;
  --blue: #83a598;
  --orange: #fe8019;
  --purple: #d3869b;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg0-h);
  color: var(--fg);
  font-family: 'JetBrains Mono', 'Fira Code', ui-monospace, monospace;
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

code, kbd {
  font-family: inherit;
  font-size: 0.92em;
  background: var(--bg1);
  border-radius: 4px;
  padding: 0.1em 0.4em;
  color: var(--yellow);
}
kbd { color: var(--fg); border: 1px solid var(--bg2); border-bottom-width: 2px; }

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 12px 24px;
  background: rgba(29, 32, 33, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--bg1);
  font-size: 13px;
}
.nav-home { color: var(--aqua); font-weight: 600; }
.nav nav { display: flex; gap: 18px; }
.nav nav a { color: var(--fg4); }
.nav nav a:hover { color: var(--fg); text-decoration: none; }

main { max-width: 960px; margin: 0 auto; padding: 0 24px 40px; }

.hero { text-align: center; padding: 72px 0 56px; }
.hero-icon { border-radius: 22px; box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5); }
h1 { font-size: 56px; line-height: 1.1; margin: 20px 0 12px; letter-spacing: -1px; }
.tagline { color: var(--fg3); max-width: 640px; margin: 0 auto 28px; font-size: 16px; }

.cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 8px;
  border: 1px solid var(--bg2);
  background: var(--bg0);
  color: var(--fg);
  font-weight: 600;
  font-size: 14px;
}
.btn:hover { background: var(--bg1); text-decoration: none; }
.btn.primary { background: var(--yellow); border-color: var(--yellow); color: var(--bg0-h); }
.btn.primary:hover { background: #fcd05c; }
.btn.disabled { opacity: 0.55; pointer-events: none; }
.btn-icon { font-weight: 700; }

.meta { margin-top: 14px; color: var(--fg4); font-size: 13px; }
.notice { margin-top: 10px; color: var(--orange); font-size: 13px; }

.shot { margin: 40px auto 0; max-width: 900px; }
.media { margin: 24px auto 0; max-width: 900px; }
.media video, .media img { display: block; width: 100%; height: auto; border-radius: 12px; border: 1px solid var(--bg2); box-shadow: 0 20px 60px rgba(0, 0, 0, 0.55); background: var(--bg0); }
.media figcaption { margin-top: 10px; color: var(--fg4); font-size: 13px; text-align: center; }
.shots { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 18px; margin-top: 8px; }
.shots .media { margin-top: 16px; }
.loop-title { margin-top: 28px; margin-bottom: 10px; }
.read-format { margin-top: 18px; align-items: start; }
.read-format h3 { margin-top: 4px; }
.shot img { display: block; width: 100%; height: auto; border-radius: 12px; border: 1px solid var(--bg2); box-shadow: 0 20px 60px rgba(0, 0, 0, 0.55); }

section { padding: 36px 0; }
h2 { font-size: 22px; margin-bottom: 20px; }
h2 .c { color: var(--bg4); }
h3 { font-size: 15px; margin-bottom: 6px; color: var(--aqua); }
.lead { color: var(--fg3); margin-bottom: 16px; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 14px; }
.card { background: var(--bg0); border: 1px solid var(--bg1); border-radius: 10px; padding: 18px; }
.card p { color: var(--fg3); font-size: 14px; }

.two { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 14px; }
.code {
  background: var(--bg0);
  border: 1px solid var(--bg1);
  border-radius: 10px;
  padding: 16px 18px;
  overflow-x: auto;
  font-family: inherit;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--fg);
  white-space: pre;
}
.code .c { color: var(--bg4); }
.code .k { color: var(--orange); }
.code .s { color: var(--green); }

.tools { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 6px; }
.small { margin-top: 12px; color: var(--fg4); font-size: 13px; }

.steps { padding-left: 22px; color: var(--fg3); }
.steps li { margin-bottom: 6px; }
.steps strong { color: var(--fg); }
.gatekeeper { margin-top: 18px; padding: 16px 18px; border: 1px solid var(--orange); border-radius: 10px; background: rgba(254, 128, 25, 0.06); }
.gatekeeper h3 { color: var(--orange); }
.gatekeeper .code { margin-top: 10px; }

.faq dt { color: var(--fg); font-weight: 600; margin-top: 14px; }
.faq dd { color: var(--fg3); }

footer {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  max-width: 960px;
  margin: 0 auto;
  padding: 24px;
  border-top: 1px solid var(--bg1);
  color: var(--fg4);
  font-size: 13px;
}

@media (max-width: 600px) {
  h1 { font-size: 42px; }
  .nav nav a:not(:last-child) { display: none; }
  .hero { padding-top: 48px; }
}