:root {
  /* Brand palette */
  --red: #EB5757;
  --blue: #2F80EC;
  --green: #219652;
  --charcoal: #333333;
  --yellow: #F2C94D;
  --purple: #9A51E0;
  --orange: #F3994B;
  --white: #FFFFFF;

  /* Base */
  --bg: #0B0D12;
  --text: #E6E8EE;
  --muted: #B9C0CC;
  --surface: #121419;
  --border: #1F232B;

  --brand-gradient: linear-gradient(135deg, var(--red), var(--blue));
  --accent-gradient: linear-gradient(135deg, var(--green), var(--blue));

  /* Typography */
  --font-primary: "Bohuan", "Montserrat", "Inter", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  --font-mono: "Cascadia Code", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Courier New", monospace;

  /* Layout */
  --container: 1200px;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(0,0,0,0.35);
}

* { box-sizing: border-box }
html, body { height: 100% }
body {
  margin: 0;
  background: radial-gradient(1200px 600px at 10% 0%, #0f1220 0%, var(--bg) 50%), var(--bg);
  color: var(--text);
  font-family: var(--font-primary);
  line-height: 1.6;
}

img { max-width: 100%; display: block }
a { color: var(--text); text-decoration: none }
.container { width: 90%; max-width: var(--container); margin-inline: auto }

/* Canvas background */
#network-canvas {
  position: fixed;
  inset: 0;
  z-index: -2;
}

/* Watermark overlay */
.watermark {
  position: fixed;
  inset: 0;
  background-image: url("watermark.jpg");
  background-size: 420px auto;
  background-repeat: repeat;
  background-position: center;
  opacity: 0.05;
  pointer-events: none;
  z-index: -1;
  mix-blend-mode: lighten;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  backdrop-filter: saturate(140%) blur(12px);
  background: rgba(18,20,25,0.6);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}
.nav-wrap {
  display: flex; align-items: center; gap: 24px; padding: 14px 0;
}
.brand { display: flex; align-items: center; gap: 14px }
.brand-logo { width: 42px; height: 42px; border-radius: 10px; box-shadow: var(--shadow) }
.brand-text { display: grid }
.brand-name { font-weight: 700; letter-spacing: 0.8px }
.brand-sub { font-size: 12px; color: var(--muted) }

.nav { margin-left: auto; display: flex; gap: 18px; align-items: center }
.nav a { padding: 10px 12px; border-radius: 10px; transition: 0.25s }
.nav a:hover { background: #171922 }

.nav-toggle { display: none; flex-direction: column; gap: 4px; background: none; border: none; }
.nav-toggle span { width: 22px; height: 2px; background: var(--text) }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 16px; border-radius: 12px; border: 1px solid transparent;
  font-weight: 600; transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}
.btn:hover { transform: translateY(-2px) }
.btn-primary { background: var(--accent-gradient); border-color: #1c3bff22 }
.btn-outline { border-color: #ffffff22; background: transparent }
.btn-gradient { background: var(--brand-gradient) }

/* Hero */
.hero { position: relative; padding: 62px 0 36px }
.hero-bg {
  position: absolute; inset: 0; z-index: -1; opacity: 0.16;
}
.hero-bg-img { width: 100%; height: 100%; object-fit: cover }
.hero-grid { display: grid; grid-template-columns: 1.2fr 0.8fr; align-items: center; gap: 40px; position: relative }
.hero-copy h1 { font-size: clamp(28px, 4.2vw, 52px); line-height: 1.15; margin: 0 0 18px }
.typing { display: inline-block; font-family: var(--font-mono); font-weight: 700; color: var(--yellow) }
.cursor { color: var(--text); animation: blink 1s infinite }
@keyframes blink { 50% { opacity: 0 } }
.hero-actions { display: flex; gap: 12px; margin-top: 14px }
.hero-badges { display: flex; gap: 8px; margin-top: 14px; flex-wrap: wrap }
.badge { background: #171922; border: 1px solid #ffffff12; padding: 6px 10px; border-radius: 999px; font-size: 12px; }
.hero-logo { width: 72%; max-width: 360px; margin-left: auto; border-radius: var(--radius); box-shadow: var(--shadow); background: #121419; padding: 16px }

/* Sections */
.section { padding: 72px 0 }
.section.alt { background: linear-gradient(180deg, #0b0d12 0%, #0e1016 100%) }
.section-head h2 { font-size: clamp(24px, 3.2vw, 36px); margin: 0 0 10px }
.section-head p { color: var(--muted); margin: 0 }

/* Cards grid */
.cards {
  margin-top: 30px;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px;
}
.card {
  background: #121419; border: 1px solid #ffffff12; border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow);
  transform: translateY(10px); opacity: 0;
}
.card-media img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover }
.card-body { padding: 18px }
.card h3 { margin: 0 0 8px }
.list { margin: 10px 0 0; padding: 0 0 0 18px; color: var(--muted) }
.list li { margin: 6px 0 }

/* Showcase */
.showcase { margin-top: 24px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px }
.showcase-item { background: #121419; border: 1px solid #ffffff12; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transform: translateY(10px); opacity: 0; }
.showcase-item figcaption { padding: 12px 14px; color: var(--muted); border-top: 1px solid #ffffff12 }

/* About */
.about-grid { margin-top: 22px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px }
.about-card { background: #121419; border: 1px solid #ffffff12; border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); transform: translateY(10px); opacity: 0; }

/* Contact */
.contact-form {
  margin-top: 24px;
  background: #121419; border: 1px solid #ffffff12; border-radius: var(--radius);
  padding: 18px; box-shadow: var(--shadow)
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px }
.form-field { display: grid; gap: 8px }
.form-field.full { grid-column: 1 / -1 }
label { font-size: 13px; color: var(--muted) }
input, textarea {
  background: #0e1116; color: var(--text); border: 1px solid #ffffff1a; border-radius: 10px;
  padding: 10px 12px; font-family: var(--font-primary);
}
input:focus, textarea:focus { outline: 2px solid #2f80ec66; border-color: #2f80ec33 }

/* Footer */
.site-footer { border-top: 1px solid var(--border); padding: 28px 0; background: #0b0d12 }
.footer-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; align-items: center; gap: 18px }
.footer-brand { display: flex; align-items: center; gap: 12px }
.footer-nav { display: flex; gap: 12px; justify-self: center }
.footer-legal { color: var(--muted); justify-self: end }

/* Hover lifts */
.lift { transition: transform 0.25s, box-shadow 0.25s }
.lift:hover { transform: translateY(-4px); box-shadow: 0 14px 40px rgba(0,0,0,0.5) }

/* Scroll reveals */
.fade-up { opacity: 0; transform: translateY(12px); will-change: transform, opacity }
.fade-in { opacity: 1 !important; transform: translateY(0) !important; transition: 600ms cubic-bezier(.2,.9,.2,1) }
.delay-1 { transition-delay: 0.08s }
.delay-2 { transition-delay: 0.16s }
.delay-3 { transition-delay: 0.24s }
.delay-4 { transition-delay: 0.32s }
.delay-5 { transition-delay: 0.40s }

/* Responsive */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; }
  .cards, .showcase, .about-grid { grid-template-columns: 1fr 1fr }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .cards, .showcase, .about-grid { grid-template-columns: 1fr }
  .form-row { grid-template-columns: 1fr }
  .nav { display: none }
  .nav-toggle { display: flex; margin-left: auto }
}