@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;600;700;900&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --steel: #2a2d35;
  --steel-light: #3d414d;
  --rust: #c75b2a;
  --rust-light: #e07a3f;
  --gold: #c9a84c;
  --gold-light: #e0c878;
  --bg-dark: #1a1c21;
  --bg-card: #22252c;
  --bg-light: #2a2d35;
  --text: #e8e4df;
  --text-dim: #9a9590;
  --text-muted: #6b6660;
  --border: #3d414d;
  --border-light: #4a4f5c;
  --shadow: 0 8px 32px rgba(0,0,0,0.4);
  --shadow-glow: 0 0 40px rgba(199,91,42,0.15);
  --radius: 0px;
  --radius-sm: 2px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1400px;
  --mono: 'JetBrains Mono', monospace;
  --serif: 'Noto Serif SC', serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--serif);
  color: var(--text);
  background: var(--bg-dark);
  line-height: 1.7;
  overflow-x: hidden;
  cursor: crosshair;
}

::selection {
  background: var(--rust);
  color: white;
}

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 40px;
}

.section {
  padding: 120px 0;
  position: relative;
}

.section-label {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--rust);
  margin-bottom: 16px;
}

.section-title {
  font-family: var(--serif);
  font-size: 2.75rem;
  font-weight: 900;
  color: var(--text);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-dim);
  max-width: 600px;
  margin-top: 16px;
  line-height: 1.8;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 40px;
  font-family: var(--mono);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  gap: 12px;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--rust);
  color: white;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
}

.btn-primary:hover {
  background: var(--rust-light);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-light);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
}

.btn-secondary:hover {
  border-color: var(--rust);
  color: var(--rust);
  background: rgba(199,91,42,0.05);
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 40px;
  transition: var(--transition);
  position: relative;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--rust), transparent);
  opacity: 0;
  transition: var(--transition);
}

.card:hover {
  border-color: var(--border-light);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.card:hover::before {
  opacity: 1;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
}

.grid-3 > * {
  background: var(--bg-card);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
}

.grid-2 > * {
  background: var(--bg-card);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
}

.grid-4 > * {
  background: var(--bg-card);
}

/* Corner decorations */
.corner-tl, .corner-tr, .corner-bl, .corner-br {
  position: absolute;
  width: 20px;
  height: 20px;
  border-color: var(--rust);
  border-style: solid;
  opacity: 0.6;
}

.corner-tl { top: -1px; left: -1px; border-width: 2px 0 0 2px; }
.corner-tr { top: -1px; right: -1px; border-width: 2px 2px 0 0; }
.corner-bl { bottom: -1px; left: -1px; border-width: 0 0 2px 2px; }
.corner-br { bottom: -1px; right: -1px; border-width: 0 2px 2px 0; }

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: var(--transition);
  border-bottom: 1px solid transparent;
}

.header.scrolled {
  background: rgba(26,28,33,0.95);
  backdrop-filter: blur(20px);
  border-bottom-color: var(--border);
  padding: 16px 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 40px;
}

.logo {
  font-family: var(--serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 12px;
  letter-spacing: 0.05em;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--rust);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  position: relative;
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
}

.nav {
  display: flex;
  gap: 40px;
  align-items: center;
}

.nav a {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-dim);
  transition: var(--transition);
  position: relative;
  padding: 8px 0;
}

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

.nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--rust);
  transition: var(--transition);
}

.nav a:hover::after,
.nav a.active::after {
  width: 100%;
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  padding: 8px;
}

.mobile-menu-btn span {
  display: block;
  width: 28px;
  height: 1px;
  background: var(--text);
  transition: var(--transition);
}

/* Footer */
.footer {
  background: var(--steel);
  color: var(--text);
  padding: 80px 0 24px;
  border-top: 1px solid var(--border);
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--rust), var(--gold), var(--rust));
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 64px;
  margin-bottom: 64px;
}

.footer-brand {
  font-family: var(--serif);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-desc {
  color: var(--text-dim);
  font-size: 0.9375rem;
  line-height: 1.8;
}

.footer-title {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--rust);
  margin-bottom: 24px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-links a {
  color: var(--text-dim);
  font-size: 0.9375rem;
  transition: var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-muted);
  font-family: var(--mono);
  font-size: 0.75rem;
}

/* Scroll animations */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Page banner */
.page-banner {
  background: var(--steel);
  color: white;
  padding: 160px 0 100px;
  position: relative;
  overflow: hidden;
}

.page-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    repeating-linear-gradient(90deg, transparent, transparent 99px, rgba(199,91,42,0.03) 99px, rgba(199,91,42,0.03) 100px),
    repeating-linear-gradient(0deg, transparent, transparent 99px, rgba(199,91,42,0.03) 99px, rgba(199,91,42,0.03) 100px);
}

.page-banner h1 {
  font-family: var(--serif);
  font-size: 3rem;
  font-weight: 900;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
  position: relative;
}

.page-banner p {
  font-size: 1.125rem;
  color: var(--text-dim);
  max-width: 600px;
  position: relative;
}

/* Grid pattern overlay */
.grid-pattern {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    repeating-linear-gradient(90deg, transparent, transparent 49px, rgba(255,255,255,0.015) 49px, rgba(255,255,255,0.015) 50px),
    repeating-linear-gradient(0deg, transparent, transparent 49px, rgba(255,255,255,0.015) 49px, rgba(255,255,255,0.015) 50px);
  pointer-events: none;
}

/* Noise texture */
.noise-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  opacity: 0.03;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* Diagonal accent */
.diagonal-accent {
  position: absolute;
  width: 200%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--rust), transparent);
  transform: rotate(-3deg);
  opacity: 0.3;
}

/* Responsive */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .section { padding: 80px 0; }
}

@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .section-title { font-size: 2rem; }
  .grid-3, .grid-2, .grid-4 { grid-template-columns: 1fr; gap: 16px; background: transparent; }
  .grid-3 > *, .grid-2 > *, .grid-4 > * { background: var(--bg-card); border: 1px solid var(--border); }
  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-dark);
    flex-direction: column;
    padding: 24px 40px;
    gap: 16px;
    border-bottom: 1px solid var(--border);
  }
  .nav.open { display: flex; }
  .mobile-menu-btn { display: flex; }
  .footer-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
  .page-banner h1 { font-size: 2rem; }
  .container { padding: 0 24px; }
}

@media (max-width: 375px) {
  .container { padding: 0 16px; }
  .section-title { font-size: 1.75rem; }
  .btn { padding: 14px 28px; font-size: 0.75rem; }
}