* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: #111;
  background: #fafafa;
}
.container { width: min(1100px, 92%); margin: 0 auto; }

.site-header {
  background: #0b1b2b;
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 10;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  gap: 14px;
}
.brand a {
  color: #fff;
  font-weight: 800;
  text-decoration: none;
  font-size: 18px;
}
.brand .tag { margin-left: 10px; font-size: 12px; opacity: .85; }

.nav a {
  color: #dbe7ff;
  text-decoration: none;
  margin-left: 10px;
  padding: 8px 10px;
  border-radius: 10px;
}
.nav a:hover { background: rgba(255,255,255,.08); }
.nav a.active { background: rgba(255,255,255,.16); color: #fff; }

.box {
  background: #fff;
  border: 1px solid #eee;
  border-radius: 18px;
  padding: 18px;
  margin: 18px 0;
}

.hero {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 16px;
  align-items: stretch;
}
@media (max-width: 860px) { .hero { grid-template-columns: 1fr; } }

.hero h1 { margin: 0 0 10px; font-size: 32px; }
.hero p { margin: 0 0 14px; color: #333; line-height: 1.5; }

.hero-img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  border-radius: 16px;
  border: 1px solid #eee;
  background: #f3f3f3;
}

.btn {
  display: inline-block;
  padding: 10px 14px;
  border-radius: 12px;
  text-decoration: none;
  border: 1px solid #0b1b2b;
  background: #0b1b2b;
  color: #fff;
  font-weight: 650;
}
.btn.secondary { background: #fff; color: #0b1b2b; }

.grid3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
@media (max-width: 860px) { .grid3 { grid-template-columns: 1fr; } }

.notice {
  padding: 12px 14px;
  border-radius: 14px;
  margin: 12px 0;
  border: 1px solid #d8f0da;
  background: #f1fff2;
}
.notice.error { border: 1px solid #ffd1d1; background: #fff3f3; }

form .row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
@media (max-width: 700px) { form .row { grid-template-columns: 1fr; } }

label { display: block; font-size: 13px; margin-bottom: 6px; color: #333; }
input, select, textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid #ddd;
  outline: none;
  background: #fff;
}
textarea { min-height: 120px; resize: vertical; }

.gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
@media (max-width: 900px) { .gallery { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .gallery { grid-template-columns: 1fr; } }
.gallery img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 16px;
  border: 1px solid #eee;
  background: #f3f3f3;
}

.site-footer {
  margin-top: 40px;
  padding: 18px 0;
  border-top: 1px solid #eee;
  background: #fff;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.muted { color: #666; font-size: 13px; }