:root {
  --black: #111;
  --gray: #6b6b6b;
  --line: #e6e6e6;
  --ink: #2b1d12;
  --cream: #fff8ec;
  --orange: #e8771e;
  --orange-dark: #b9520d;
  --sky: #2f7fd6;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--black);
  background: #fff;
  line-height: 1.55;
}

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

/* Brand chrome shared by every page */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px clamp(20px, 5vw, 56px);
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.brand img { height: 36px; width: auto; }

.topbar-link {
  color: var(--black);
  font-weight: 600;
  text-decoration: none;
}

.topbar-link:hover { text-decoration: underline; }

.btn {
  display: inline-block;
  padding: 11px 22px;
  border: 2px solid var(--black);
  border-radius: 999px;
  background: var(--black);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.1s;
}

.btn:hover { transform: translateY(-1px); }
.btn-outline { background: #fff; color: var(--black); }

/* Home page */

.intro {
  max-width: 760px;
  margin: 0 auto;
  padding: 80px 20px 56px;
  text-align: center;
}

.intro-mark { margin: 0 auto 28px; }

.intro h1 {
  margin: 0;
  font-size: clamp(2.3rem, 6vw, 3.8rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.intro p {
  margin: 18px 0 0;
  font-size: 1.2rem;
  color: var(--gray);
}

.catalog {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px 80px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  background: #fff;
}

.card-image {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 16 / 10;
  background: #f4f4f4;
  overflow: hidden;
}

.card-image img { width: 100%; height: 100%; object-fit: cover; }

.card-body { padding: 20px 22px 24px; flex: 1; }

.card-meta {
  margin: 0;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray);
}

.card-meta span::before { content: "\00b7"; margin-right: 6px; }

.card h2 { margin: 4px 0 8px; font-size: 1.45rem; }
.card h2 a { color: inherit; text-decoration: none; }
.card h2 a:hover { text-decoration: underline; }
.card-body > p:not(.card-meta) { margin: 0; color: #444; }

.card-actions { display: flex; gap: 10px; margin-top: 18px; }

.card-soon { border-style: dashed; border-color: #cfcfcf; background: #fcfcfc; }
.card-soon .card-image { background: #f7f7f7; }
.card-soon .card-image img { width: 72px; height: auto; opacity: 0.12; }
.card-soon h2, .card-soon .card-body > p:not(.card-meta) { color: #9a9a9a; }

@media (max-width: 640px) {
  .card-soon .card-image { display: none; }
  .intro { padding-top: 56px; }
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 28px 20px 40px;
  border-top: 1px solid var(--line);
  color: var(--gray);
  font-size: 0.9rem;
}

/* Goose Migration page */

.game { color: var(--ink); background: var(--cream); }

.game .hero {
  text-align: center;
  padding: 72px 20px 96px;
  color: #fff;
  background: linear-gradient(180deg, rgba(10, 30, 70, 0.15), rgba(10, 30, 70, 0.45)), url("/images/sky.jpg") center / cover;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.45);
}

.hero-goose {
  margin: 0 auto 8px;
  filter: drop-shadow(0 6px 10px rgba(0, 0, 0, 0.35));
  animation: glide 3s ease-in-out infinite;
}

@keyframes glide {
  50% { transform: translateY(-10px) rotate(-3deg); }
}

.game h1 {
  margin: 0;
  font-size: clamp(2.6rem, 7vw, 4.6rem);
  letter-spacing: 0.02em;
}

.tagline {
  font-size: clamp(1.1rem, 2.6vw, 1.45rem);
  margin: 6px 0 32px;
}

.download {
  display: inline-block;
  padding: 16px 34px;
  border-radius: 14px;
  background: var(--orange);
  color: #fff;
  font-size: 1.35rem;
  font-weight: 700;
  text-decoration: none;
  text-shadow: none;
  box-shadow: 0 6px 0 var(--orange-dark), 0 12px 24px rgba(0, 0, 0, 0.3);
  transition: transform 0.1s, box-shadow 0.1s;
}

.download span {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  opacity: 0.9;
}

.download:hover { transform: translateY(-2px); }
.download:active { transform: translateY(4px); box-shadow: 0 2px 0 var(--orange-dark); }

.small { font-size: 0.9rem; opacity: 0.9; margin-top: 18px; }

.game main {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 20px 40px;
}

.game section { margin: 56px 0; }

.shot-main { margin-top: -56px; }
.shot-main img, .stages img {
  border-radius: 12px;
  box-shadow: 0 12px 32px rgba(43, 29, 18, 0.25);
}

.game h2 {
  font-size: 1.8rem;
  margin: 0 0 18px;
  color: var(--orange-dark);
}

.how {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}

.how li {
  background: #fff;
  border-radius: 12px;
  padding: 16px 18px;
  box-shadow: 0 2px 10px rgba(43, 29, 18, 0.08);
}

.how b { display: block; color: var(--sky); }

.stages {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

@media (max-width: 640px) {
  .stages { grid-template-columns: 1fr; }
}

figure { margin: 0; }
figcaption { margin-top: 10px; }
figcaption b { display: block; font-size: 1.1rem; }

.install ol { padding-left: 1.3em; }
.install li { margin-bottom: 8px; }
.small-btn { font-size: 1.05rem; padding: 12px 24px; margin-top: 10px; }

.game code {
  background: #f1e3cc;
  padding: 1px 6px;
  border-radius: 5px;
}

.game footer {
  text-align: center;
  padding: 28px 20px 40px;
  font-size: 0.9rem;
  color: #7a6450;
}

.game footer a { color: inherit; }

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  text-decoration: none;
}