:root{
  --max: 1120px;
  --fg: #111;
  --muted: #666;
  --line: #eee;
  --bg: #fafafa;
  --card: #fff;
  --r: 18px;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  color:var(--fg);
  background:var(--bg);
  line-height:1.55;
}

a{ color:inherit; text-decoration:none; }
.wrap{ max-width:var(--max); margin:0 auto; padding:0 16px; }
.main{ padding:22px 0 34px; }

.muted{ color:var(--muted); }
.tiny{ font-size:12px; }
h1,h2,h3{ letter-spacing:-.02em; }
hr{ border:none; border-top:1px solid var(--line); margin:18px 0; }

.site-header{
  position:sticky; top:0; z-index:10;
  background:#fff; border-bottom:1px solid var(--line);
}
.nav{ display:flex; align-items:center; justify-content:space-between; gap:12px; padding:12px 0; }
.brand{ display:flex; align-items:center; gap:10px; font-weight:900; }
.brand-logo {    height: 34px;    width: auto;    object-fit: contain;}
.brand-name{ font-size:16px; }

.menu{ display:flex; gap:14px; color:var(--muted); font-size:14px; flex-wrap:wrap; }
.menu a:hover{ color:#111; }

.nav-toggle{ display:none; }
.nav-toggle-btn{ display:none; user-select:none; padding:8px 10px; border:1px solid var(--line); border-radius:12px; }

.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r);
  padding:16px;
}

.hero{
  display:grid;
  gap:14px;
  grid-template-columns:1fr;
  align-items:center;
}
.hero h1{ margin:0 0 10px; font-size:28px; }
.hero p{ margin:0 0 14px; }
.hero-art{ width:100%; border-radius:calc(var(--r) + 6px); border:1px solid var(--line); background:#fff; }

.btn-row{ display:flex; gap:10px; flex-wrap:wrap; }
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:11px 14px; border-radius:12px;
  border:1px solid #111; font-weight:800;
}
.btn.primary{ background:#111; color:#fff; }
.btn.ghost{ background:#fff; color:#111; }

.grid{
  display:grid; gap:12px;
  grid-template-columns:1fr;
}
.kicker{ font-size:12px; color:var(--muted); margin:0 0 6px; }
.card h3{ margin:0 0 6px; font-size:18px; }
.card p{ margin:0; color:var(--muted); font-size:14px; }

.badges{ display:flex; gap:8px; flex-wrap:wrap; margin-top:10px; }
.badge{ border:1px solid var(--line); background:#fff; padding:6px 10px; border-radius:999px; font-size:12px; color:var(--muted); }

.two{
  display:grid; gap:12px;
  grid-template-columns:1fr;
}

input, textarea{
  width:100%;
  padding:12px;
  border-radius:12px;
  border:1px solid #ddd;
  font-size:15px;
  background:#fff;
}
textarea{ min-height:140px; resize:vertical; }

.site-footer{
  padding:28px 0;
  background:#fff;
  border-top:1px solid var(--line);
}
.footer-grid{
  display:grid; gap:14px;
  grid-template-columns:1fr;
}
.footer-title{ font-weight:900; margin-bottom:6px; }

.notice-ok{ color:#0a7; font-weight:800; }
.notice-err{ color:#c30; font-weight:800; }

/* Responsive */
@media (min-width: 820px){
  .hero{ grid-template-columns: 1.15fr .85fr; }
  .hero h1{ font-size:40px; }
  .grid{ grid-template-columns: repeat(3, 1fr); }
  .two{ grid-template-columns: 1.1fr .9fr; }
  .footer-grid{ grid-template-columns: 1.2fr .8fr 1fr; }
}

/* Mobile menu (no JS) */
@media (max-width: 819px){
  .nav-toggle-btn{ display:inline-flex; }
  .menu{
    display:none;
    position:absolute;
    left:0; right:0;
    top:60px;
    background:#fff;
    border-bottom:1px solid var(--line);
    padding:10px 16px;
  }
  .menu a{ padding:10px 0; display:block; }
  .nav{ position:relative; }
  .nav-toggle:checked ~ .menu{ display:block; }
}