:root {
  /* Chinese Ancient Style / Dark Ink Theme */
  --bg: #1a1a1c;
  /* Ink Black */
  --bg-secondary: #242426;
  --text: #f0f0f2;
  /* Silver White */
  --text-muted: #a0a0a5;
  --primary: #8b0000;
  /* Cinnabar Red */
  --accent: #d4af37;
  /* Gold */
  --border: #333336;

  --font-serif: "Songti SC", "Noto Serif SC", serif;
  --font-sans: "Songti SC", system-ui, -apple-system, sans-serif;
}

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

body {
  margin: 0;
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.6;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-serif);
  font-weight: normal;
  color: var(--text);
  margin-top: 0;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: #fff;
}

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

/* Utils */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.text-center {
  text-align: center;
}

.mt-1 {
  margin-top: 1rem;
}

.mt-2 {
  margin-top: 2rem;
}

.mt-4 {
  margin-top: 4rem;
}

/* Navigation */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(26, 26, 28, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: bold;
  letter-spacing: 2px;
  color: var(--text);
}

.logo-small {
  height: 48px;
  width: auto;
  object-fit: contain;
}

.logo-full {
  height: 80px;
  width: auto;
  object-fit: contain;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--text-muted);
}

.nav-links a.active,
.nav-links a:hover {
  color: var(--accent);
}

/* Footer */
footer {
  border-top: 1px solid var(--border);
  margin-top: 4rem;
  padding: 3rem 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

footer .brand {
  justify-content: center;
  margin-bottom: 1rem;
  font-size: 1.8rem;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.8rem 2rem;
  border: 1px solid var(--accent);
  color: var(--accent);
  font-family: var(--font-serif);
  letter-spacing: 2px;
  cursor: pointer;
  background: transparent;
  transition: all 0.3s;
}

.btn:hover {
  background: var(--accent);
  color: var(--bg);
}

.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.btn-primary:hover {
  background: #a00000;
  border-color: #a00000;
}