:root {
  --ink: #121212;
  --text: #18181b;
  --text-muted: #71717a;
  --surface: #ffffff;
  --border: #e4e4e7;
  --orange: #ff6b00;
  --orange-dark: #e55f00;
  --max-width: 720px;
  font-family: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.6;
  color: var(--text);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--surface);
  min-height: 100vh;
}

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

.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: 0.06em;
  text-decoration: none;
}

.brand:hover { text-decoration: none; color: var(--ink); }

.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--orange), #ffb347);
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 0.85rem;
  font-weight: 800;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  font-size: 0.9rem;
}

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

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

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 32px 20px 48px;
}

h1 {
  font-size: 1.75rem;
  line-height: 1.25;
  color: var(--ink);
  margin: 0 0 8px;
  letter-spacing: -0.02em;
}

.page-meta {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 28px;
}

h2 {
  font-size: 1.15rem;
  color: var(--ink);
  margin: 28px 0 10px;
}

h3 {
  font-size: 1rem;
  color: var(--ink);
  margin: 20px 0 8px;
}

p, li {
  font-size: 0.95rem;
  margin: 0 0 12px;
}

ul, ol {
  padding-left: 1.25rem;
  margin: 0 0 16px;
}

li { margin-bottom: 6px; }

.note {
  border-left: 3px solid var(--orange);
  padding: 12px 16px;
  background: #fff8f3;
  margin: 20px 0;
  font-size: 0.92rem;
}

.cta-box {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  margin-top: 32px;
}

.cta-box h2 { margin-top: 0; }

details {
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}

details summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--ink);
  list-style: none;
}

details summary::-webkit-details-marker { display: none; }

details[open] summary { color: var(--orange); margin-bottom: 8px; }

.contact-list {
  list-style: none;
  padding: 0;
}

.contact-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.contact-list li:last-child { border-bottom: none; }

label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 6px;
}

input[type="email"],
textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font: inherit;
  margin-bottom: 12px;
}

button, .btn {
  display: inline-block;
  background: var(--orange);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 10px 18px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

button:hover, .btn:hover {
  background: var(--orange-dark);
  text-decoration: none;
  color: #fff;
}

.alert {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 20px;
  font-size: 0.92rem;
}

.alert-success {
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  color: #065f46;
}

.alert-info {
  background: #fff8f3;
  border: 1px solid #fed7aa;
  color: #9a3412;
}

.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 48px;
  padding: 24px 20px 32px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 16px;
  margin-top: 8px;
}

@media (max-width: 600px) {
  h1 { font-size: 1.45rem; }
  main { padding-top: 24px; }
  .header-inner { padding: 12px 16px; }
}