:root {
  --color-bg: #0a0a0f;
  --color-bg-alt: #12121a;
  --color-surface: #1a1a24;
  --color-border: #2a2a3a;
  --color-text: #e8e8f0;
  --color-text-muted: #a0a0b8;
  --color-primary: #c9a227;
  --color-primary-hover: #dbb42f;
  --color-accent: #00d4aa;
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.2s ease;
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: var(--color-primary);
  color: #0a0a0f;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--color-primary);
  color: var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: #0a0a0f;
}

/* Section */
.section {
  padding: 5rem 0;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.section-subtitle {
  color: var(--color-text-muted);
  font-size: 1.1rem;
  max-width: 560px;
  margin-bottom: 3rem;
}

/* Cards */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color 0.2s, transform 0.2s;
}

.card:hover {
  border-color: var(--color-primary);
  transform: translateY(-3px);
}

.card-icon {
  width: 48px;
  height: 48px;
  background: rgba(201, 162, 39, 0.12);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 1.25rem;
  color: var(--color-primary);
}

.card h3 {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* Grid */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--color-primary);
}

.logo span {
  color: var(--color-text);
}

.nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color 0.2s;
}

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

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero */
.hero {
  padding: 7rem 0 5rem;
  background: radial-gradient(ellipse at 50% 0%, rgba(201, 162, 39, 0.08) 0%, transparent 60%);
  text-align: center;
}

.hero h1 {
  font-size: clamp(2.2rem, 5.5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 1.25rem;
}

.hero p {
  font-size: 1.2rem;
  color: var(--color-text-muted);
  max-width: 580px;
  margin: 0 auto 2.5rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Footer */
.footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer h4 {
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
  color: var(--color-primary);
}

.footer a {
  display: block;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 0.6rem;
  transition: color 0.2s;
}

.footer a:hover {
  color: var(--color-text);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 1.5rem;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

/* Form */
.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 0.4rem;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.85rem 1rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text);
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

/* Page header */
.page-header {
  padding: 4.5rem 0 3rem;
  text-align: center;
  background: radial-gradient(ellipse at 50% 0%, rgba(201, 162, 39, 0.06) 0%, transparent 50%);
}

.page-header h1 {
  font-size: clamp(1.9rem, 4vw, 2.75rem);
  margin-bottom: 0.75rem;
}

.page-header p {
  color: var(--color-text-muted);
  font-size: 1.1rem;
}

/* Responsive */
@media (max-width: 768px) {
  .nav {
    display: none;
  }

  .mobile-toggle {
    display: block;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .hero {
    padding: 5rem 0 3.5rem;
  }
}

@media (max-width: 480px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}