/* ============================================================
   天枢智能 (Tianshu Intelligence) - Main Stylesheet
   Theme: Dark Cosmic × Oriental Gold
   ============================================================ */

/* --- CSS Variables --- */
:root {
  --bg-primary: #07070f;
  --bg-secondary: #0d0d1a;
  --bg-tertiary: #141428;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --gold: #D4A853;
  --gold-light: #E8C86A;
  --gold-dim: #A8883E;
  --cyan: #4FC3F7;
  --cyan-dim: #2A8BB5;
  --text-primary: #F0F0F5;
  --text-secondary: #A8A8C0;
  --text-muted: #686880;
  --border-color: rgba(212, 168, 83, 0.15);
  --border-glow: rgba(212, 168, 83, 0.3);
  --shadow-gold: rgba(212, 168, 83, 0.08);
  --shadow-cyan: rgba(79, 195, 247, 0.08);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --transition: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --font-serif: 'Fraunces', 'Noto Serif SC', Georgia, serif;
  --font-sans: 'DM Sans', 'Noto Sans SC', -apple-system, sans-serif;
}

/* --- Reset & Base --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* --- Starfield Background --- */
.starfield {
  position: fixed;
  top: 0; left: 0;
  width: 100vw; height: 100vh;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.starfield::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 200%; height: 200%;
  background-image:
    radial-gradient(1px 1px at 10% 20%, rgba(255,255,255,0.6), transparent),
    radial-gradient(1px 1px at 20% 40%, rgba(255,255,255,0.4), transparent),
    radial-gradient(1.5px 1.5px at 30% 10%, rgba(255,255,255,0.5), transparent),
    radial-gradient(1px 1px at 40% 60%, rgba(255,255,255,0.3), transparent),
    radial-gradient(1px 1px at 50% 30%, rgba(212,168,83,0.4), transparent),
    radial-gradient(1.5px 1.5px at 60% 80%, rgba(255,255,255,0.5), transparent),
    radial-gradient(1px 1px at 70% 50%, rgba(255,255,255,0.3), transparent),
    radial-gradient(1px 1px at 80% 20%, rgba(212,168,83,0.3), transparent),
    radial-gradient(1.5px 1.5px at 90% 70%, rgba(255,255,255,0.4), transparent),
    radial-gradient(1px 1px at 15% 85%, rgba(255,255,255,0.3), transparent),
    radial-gradient(1px 1px at 25% 55%, rgba(255,255,255,0.5), transparent),
    radial-gradient(1.5px 1.5px at 35% 15%, rgba(79,195,247,0.3), transparent),
    radial-gradient(1px 1px at 45% 45%, rgba(255,255,255,0.4), transparent),
    radial-gradient(1px 1px at 55% 75%, rgba(255,255,255,0.3), transparent),
    radial-gradient(1.5px 1.5px at 65% 5%, rgba(212,168,83,0.3), transparent),
    radial-gradient(1px 1px at 75% 65%, rgba(255,255,255,0.5), transparent),
    radial-gradient(1px 1px at 85% 35%, rgba(255,255,255,0.3), transparent),
    radial-gradient(1px 1px at 95% 90%, rgba(79,195,247,0.3), transparent);
  background-size: 200px 200px;
  animation: starDrift 60s linear infinite;
  opacity: 0.7;
}

.starfield::after {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: radial-gradient(ellipse at 30% 50%, rgba(79,195,247,0.03) 0%, transparent 50%),
              radial-gradient(ellipse at 70% 30%, rgba(212,168,83,0.02) 0%, transparent 50%);
}

@keyframes starDrift {
  from { transform: translate(0, 0); }
  to { transform: translate(-50%, -50%); }
}

/* --- Constellation Lines (decorative SVG overlay) --- */
.constellation {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.08;
}

/* --- Grain Texture Overlay --- */
.grain {
  position: fixed;
  top: 0; left: 0;
  width: 100vw; height: 100vh;
  z-index: 1;
  pointer-events: none;
  opacity: 0.03;
  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)' opacity='1'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 5vw, 4.5rem); }
h2 { font-size: clamp(2rem, 4vw, 3.2rem); }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.8rem); }
h4 { font-size: clamp(1.1rem, 2vw, 1.4rem); }

p { font-size: 1rem; color: var(--text-secondary); line-height: 1.8; }
a { color: var(--gold); text-decoration: none; transition: color 0.3s var(--transition); }
a:hover { color: var(--gold-light); }

::selection {
  background: rgba(212, 168, 83, 0.3);
  color: #fff;
}

/* --- Layout --- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 2;
}

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

.section-label {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 16px;
  position: relative;
}

.section-label::before {
  content: '◆ ';
  font-size: 0.6rem;
}

.section-title {
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  line-height: 1.8;
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  z-index: 1000;
  padding: 20px 0;
  transition: all 0.4s var(--transition);
}

.nav.scrolled {
  background: rgba(7, 7, 15, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(212, 168, 83, 0.08);
  padding: 12px 0;
}

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

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.nav-brand .brand-icon {
  width: 36px;
  height: 36px;
  border: 1.5px solid var(--gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--gold);
  position: relative;
}

.nav-brand .brand-icon::after {
  content: '';
  position: absolute;
  width: 6px;
  height: 6px;
  background: var(--gold);
  border-radius: 50%;
  opacity: 0.6;
  box-shadow: 0 0 8px var(--gold);
}

.nav-brand .brand-sub {
  font-family: var(--font-sans);
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 2px;
  text-transform: uppercase;
  display: block;
  margin-top: -2px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: color 0.3s var(--transition);
  position: relative;
  padding: 4px 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 1px;
  background: var(--gold);
  transition: width 0.3s var(--transition);
}

.nav-links a:hover { color: var(--gold); }
.nav-links a:hover::after { width: 100%; }

.nav-lang {
  display: flex;
  gap: 4px;
  margin-left: 8px;
}

.nav-lang a {
  font-size: 0.7rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 4px 10px;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 4px;
}

.nav-lang a.active {
  border-color: var(--gold);
  color: var(--gold);
  background: rgba(212, 168, 83, 0.08);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 4px;
}

/* --- Hero Section --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 100px;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.hero-content { position: relative; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gold);
  border: 1px solid rgba(212, 168, 83, 0.2);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 32px;
  background: rgba(212, 168, 83, 0.05);
}

.hero-badge .dot {
  width: 6px; height: 6px;
  background: var(--gold);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
}

.hero h1 {
  margin-bottom: 24px;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--gold) 0%, var(--gold-light) 50%, var(--gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.1rem;
  margin-bottom: 40px;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.5px;
  padding: 14px 32px;
  border-radius: 100px;
  transition: all 0.4s var(--transition);
  cursor: pointer;
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  color: #07070f;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(212, 168, 83, 0.25);
  color: #07070f;
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid rgba(255,255,255,0.15);
}

.btn-secondary:hover {
  border-color: var(--gold);
  color: var(--gold);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--gold);
  border: 1px solid var(--gold);
}

.btn-outline:hover {
  background: rgba(212, 168, 83, 0.1);
  transform: translateY(-2px);
}

/* --- Hero Visual --- */
.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-visual .orbit-ring {
  position: absolute;
  border: 1px solid rgba(212, 168, 83, 0.1);
  border-radius: 50%;
  animation: orbit-spin 20s linear infinite;
}

.hero-visual .orbit-ring:nth-child(1) {
  width: 320px; height: 320px;
  border-color: rgba(212, 168, 83, 0.08);
}

.hero-visual .orbit-ring:nth-child(2) {
  width: 420px; height: 420px;
  border-color: rgba(79, 195, 247, 0.06);
  animation-duration: 30s;
  animation-direction: reverse;
}

.hero-visual .orbit-ring:nth-child(3) {
  width: 520px; height: 520px;
  border-color: rgba(212, 168, 83, 0.04);
  animation-duration: 40s;
}

@keyframes orbit-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.hero-visual .center-glow {
  width: 120px; height: 120px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212,168,83,0.15) 0%, transparent 70%);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-visual .center-glow::before {
  content: '';
  position: absolute;
  width: 60px; height: 60px;
  background: radial-gradient(circle, rgba(212,168,83,0.3), transparent);
  border-radius: 50%;
  animation: center-pulse 3s ease-in-out infinite;
}

.hero-visual .center-glow::after {
  content: '✦';
  font-size: 1.5rem;
  color: var(--gold);
  z-index: 1;
}

@keyframes center-pulse {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.5); opacity: 0.2; }
}

/* --- Constellation dot on orbit --- */
.hero-visual .orbit-dot {
  position: absolute;
  width: 4px; height: 4px;
  background: var(--gold);
  border-radius: 50%;
  box-shadow: 0 0 6px var(--gold);
}

/* --- Stats Bar --- */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  padding: 60px 0;
  border-top: 1px solid rgba(255,255,255,0.06);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  margin-top: 40px;
}

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

.stat-number {
  font-family: var(--font-serif);
  font-size: 2.8rem;
  color: var(--text-primary);
  letter-spacing: -0.03em;
}

.stat-number .suffix {
  font-size: 1.5rem;
  color: var(--gold);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* --- Services Section --- */
#services { background: var(--bg-secondary); }

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 60px;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 40px 32px;
  transition: all 0.4s var(--transition);
  cursor: default;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s var(--transition);
}

.service-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(212, 168, 83, 0.25);
  transform: translateY(-4px);
}

.service-card:hover::before {
  transform: translateX(100%);
}

.service-card .icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: rgba(212, 168, 83, 0.08);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 24px;
  color: var(--gold);
}

.service-card h3 {
  font-size: 1.2rem;
  margin-bottom: 12px;
}

.service-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* --- About Section --- */
#about { background: var(--bg-primary); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  margin-top: 60px;
}

.about-text p {
  margin-bottom: 20px;
}

.about-visual {
  position: relative;
  padding: 40px;
}

.about-visual .team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.about-visual .team-member {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 20px 16px;
  text-align: center;
  transition: all 0.3s var(--transition);
}

.about-visual .team-member:hover {
  border-color: rgba(212, 168, 83, 0.3);
  transform: translateY(-2px);
}

.about-visual .team-member .avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(212,168,83,0.2), rgba(79,195,247,0.2));
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 8px;
  font-size: 0.8rem;
  color: var(--gold);
  border: 1px solid rgba(212,168,83,0.2);
}

.about-visual .team-member .name {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.about-visual .team-member .role {
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 1px;
  text-transform: uppercase;
  font-weight: 500;
}

.about-visual .team-caption {
  margin-top: 20px;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 1px;
}

/* --- Cases Section --- */
#cases { background: var(--bg-secondary); }

.cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 60px;
}

.case-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all 0.4s var(--transition);
}

.case-card:hover {
  border-color: rgba(212, 168, 83, 0.2);
  transform: translateY(-4px);
}

.case-card .case-image {
  height: 200px;
  background: linear-gradient(135deg, rgba(212,168,83,0.05), rgba(79,195,247,0.05));
  display: flex; align-items: center; justify-content: center;
  font-size: 2.5rem;
  color: rgba(212,168,83,0.3);
  position: relative;
  overflow: hidden;
}

.case-card .case-image::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 100%; height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-dim), transparent);
}

.case-card .case-body {
  padding: 28px;
}

.case-card .case-tag {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 8px;
}

.case-card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.case-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* --- Team Section --- */
#team { background: var(--bg-primary); }

.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 60px;
}

.team-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  text-align: center;
  transition: all 0.4s var(--transition);
}

.team-card:hover {
  border-color: rgba(212, 168, 83, 0.25);
  transform: translateY(-4px);
  background: var(--bg-card-hover);
}

.team-card .avatar-lg {
  width: 64px; height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(212,168,83,0.15), rgba(79,195,247,0.15));
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 16px;
  font-size: 1.8rem;
  border: 1px solid rgba(212,168,83,0.15);
}

.team-card .member-name {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.team-card .member-role-cn {
  font-size: 0.75rem;
  color: var(--gold);
  margin-bottom: 2px;
}

.team-card .member-role-en {
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.team-card .member-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.team-divider {
  margin: 60px 0;
  text-align: center;
  position: relative;
}

.team-divider::before {
  content: '';
  position: absolute;
  top: 50%; left: 0;
  width: 100%; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(212,168,83,0.2), transparent);
}

.team-divider span {
  display: inline-block;
  background: var(--bg-primary);
  padding: 0 24px;
  font-family: var(--font-serif);
  font-size: 0.85rem;
  color: var(--text-muted);
  letter-spacing: 2px;
  text-transform: uppercase;
  position: relative;
}

/* --- CTA Section --- */
#cta {
  background: var(--bg-secondary);
  text-align: center;
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}

#cta::before {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(212,168,83,0.03) 0%, transparent 70%);
  pointer-events: none;
}

#cta h2 { margin-bottom: 16px; }
#cta p { margin-bottom: 40px; max-width: 500px; margin-left: auto; margin-right: auto; }

/* --- Contact Section --- */
#contact {
  background: var(--bg-primary);
  padding: 120px 0 80px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  margin-top: 60px;
}

.contact-info-list { list-style: none; }

.contact-info-list li {
  display: flex;
  gap: 16px;
  margin-bottom: 28px;
  align-items: flex-start;
}

.contact-info-list .ci-icon {
  width: 44px; height: 44px;
  min-width: 44px;
  border-radius: 12px;
  background: rgba(212, 168, 83, 0.08);
  border: 1px solid var(--border-color);
  display: flex; align-items: center; justify-content: center;
  color: var(--gold);
  font-size: 1rem;
}

.contact-info-list .ci-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 2px;
}

.contact-info-list .ci-value {
  font-size: 0.95rem;
  color: var(--text-primary);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
}

.form-group input,
.form-group textarea,
.form-group select {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  padding: 14px 16px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  outline: none;
  transition: border-color 0.3s var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(212, 168, 83, 0.08);
}

.form-group textarea { min-height: 120px; resize: vertical; }
.form-group select { cursor: pointer; }
.form-group select option { background: var(--bg-primary); }

/* --- Footer --- */
footer {
  border-top: 1px solid rgba(255,255,255,0.05);
  padding: 40px 0;
  background: var(--bg-primary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 40px;
}

.footer-brand p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 12px;
  max-width: 320px;
}

.footer-col h4 {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul a {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: color 0.3s var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.05);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-bottom p {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.footer-bottom a {
  font-size: 0.75rem;
  color: var(--text-muted);
}

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

/* --- Page Header (for subpages) --- */
.page-header {
  padding: 180px 0 80px;
  text-align: center;
  position: relative;
}

.page-header p {
  max-width: 600px;
  margin: 16px auto 0;
}

/* --- Breadcrumb --- */
.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb span { color: var(--text-secondary); }

/* --- Content Page (about, services detail) --- */
.content-section {
  padding: 0 0 120px;
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  margin-top: 60px;
  align-items: start;
}

.content-block {
  margin-bottom: 40px;
}

.content-block h3 {
  margin-bottom: 16px;
  font-size: 1.4rem;
}

.content-block p, .content-block li {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 12px;
}

.content-block ul, .content-block ol {
  list-style: none;
  padding: 0;
}

.content-block ul li {
  padding-left: 20px;
  position: relative;
}

.content-block ul li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--gold-dim);
}

/* --- Value Props --- */
.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 60px;
}

.value-item {
  text-align: center;
  padding: 40px 24px;
}

.value-item .value-num {
  font-family: var(--font-serif);
  font-size: 3rem;
  color: var(--gold-dim);
  margin-bottom: 12px;
  line-height: 1;
}

.value-item h4 {
  margin-bottom: 8px;
}

.value-item p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* --- Comparison Table --- */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 40px;
  font-size: 0.85rem;
}

.comparison-table th,
.comparison-table td {
  padding: 16px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  text-align: left;
}

.comparison-table th {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-color);
}

.comparison-table td { color: var(--text-secondary); }
.comparison-table td:first-child { color: var(--text-primary); font-weight: 500; }
.comparison-table td:last-child { color: var(--gold); }

/* --- Timeline --- */
.timeline {
  position: relative;
  padding-left: 40px;
  margin-top: 60px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 15px; top: 0;
  width: 1px;
  height: 100%;
  background: linear-gradient(to bottom, var(--gold-dim), transparent);
}

.timeline-item {
  position: relative;
  margin-bottom: 48px;
}

.timeline-item::before {
  content: '◆';
  position: absolute;
  left: -31px;
  top: 0;
  font-size: 0.6rem;
  color: var(--gold);
}

.timeline-item .step {
  font-family: var(--font-sans);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gold-dim);
  margin-bottom: 4px;
}

.timeline-item h4 {
  margin-bottom: 8px;
}

.timeline-item p {
  font-size: 0.85rem;
  color: var(--text-muted);
  max-width: 500px;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }

  .hero p { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }

  .hero-visual { display: none; }

  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .value-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%; left: 0;
    width: 100%;
    background: rgba(7,7,15,0.98);
    backdrop-filter: blur(20px);
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid rgba(212,168,83,0.1);
  }

  .services-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: 1fr; }
  .about-visual .team-grid { grid-template-columns: repeat(2, 1fr); }
  .value-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .stats-bar { grid-template-columns: 1fr; gap: 24px; }

  .section { padding: 80px 0; }
  .page-header { padding: 140px 0 60px; }

  .hero-visual .orbit-ring:nth-child(1) { width: 240px; height: 240px; }
  .hero-visual .orbit-ring:nth-child(2) { width: 320px; height: 320px; }
  .hero-visual .orbit-ring:nth-child(3) { width: 400px; height: 400px; }

  .comparison-table { font-size: 0.75rem; }
  .comparison-table th,
  .comparison-table td { padding: 12px; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  h1 { font-size: 2rem; }
  h2 { font-size: 1.6rem; }
  .hero-badge { font-size: 0.6rem; }
}

/* --- Animations --- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--transition), transform 0.8s var(--transition);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.8s var(--transition), transform 0.8s var(--transition);
}

.fade-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.fade-in-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.8s var(--transition), transform 0.8s var(--transition);
}

.fade-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* Staggered animation delays */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: rgba(212,168,83,0.2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(212,168,83,0.4); }

/* --- Section divider gold line --- */
.section-divider {
  width: 40px;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), transparent);
  margin: 20px 0 32px;
}

.center-divider {
  margin-left: auto;
  margin-right: auto;
}

/* --- Services Detail Page --- */
.service-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-top: 40px;
}

.service-detail-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 36px 32px;
  transition: all 0.4s var(--transition);
}

.service-detail-card:hover {
  border-color: rgba(212, 168, 83, 0.2);
  transform: translateY(-2px);
}

.service-detail-card .sd-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.service-detail-card h4 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.service-detail-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* --- Case detail in pages --- */
.case-detail-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.case-detail-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.case-detail-item .cd-header {
  padding: 24px 28px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 12px;
}

.case-detail-item .cd-header .cd-icon {
  width: 36px; height: 36px;
  border-radius: 8px;
  background: rgba(212,168,83,0.08);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
}

.case-detail-item .cd-header h4 { font-size: 1rem; margin: 0; }

.case-detail-item .cd-body {
  padding: 20px 28px;
}

.case-detail-item .cd-body p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* --- GEO / SEO highlight badge --- */
.geo-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--cyan);
  border: 1px solid rgba(79,195,247,0.2);
  padding: 4px 10px;
  border-radius: 100px;
  background: rgba(79,195,247,0.05);
}