/* ===== GammaForce Matrix - Corporate Website Styles ===== */

:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-card: #1a1f2e;
  --bg-elevated: #242b3d;
  --text-primary: #e8ecf1;
  --text-secondary: #8b95a8;
  --text-muted: #5a6478;
  --accent: #3b82f6;
  --accent-glow: rgba(59, 130, 246, 0.4);
  --accent-secondary: #06b6d4;
  --gradient-primary: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);
  --gradient-hero: linear-gradient(180deg, rgba(10, 14, 23, 0) 0%, #0a0e17 100%);
  --border: rgba(255, 255, 255, 0.06);
  --border-active: rgba(59, 130, 246, 0.3);
  --success: #10b981;
  --warning: #f59e0b;
  --radius-sm: 6px;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-elevated: 0 4px 16px rgba(0, 0, 0, 0.4), 0 0 40px rgba(59, 130, 246, 0.04);
  --transition: 200ms ease;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", "Consolas", monospace;
  --max-width: 1200px;
}

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

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

body {
  font-family: var(--font-sans);
  background:
    url('/assets/tech-bg.svg') center top / cover no-repeat,
    var(--bg-primary);
  background-attachment: fixed;
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-secondary); }

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

/* ===== Navigation ===== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}
.nav-inner {
  max-width: var(--max-width); margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 64px; padding: 0 24px;
}
.nav-logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.2rem; color: var(--text-primary); }
.nav-logo-icon {
  width: 36px; height: 36px;
  background: var(--gradient-primary); border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-weight: 800; font-size: 0.9rem;
}
.nav-links { display: flex; align-items: center; gap: 8px; list-style: none; }
.nav-links a {
  color: var(--text-secondary); padding: 8px 16px; border-radius: var(--radius-sm);
  font-size: 0.9rem; transition: all var(--transition);
}
.nav-links a:hover,
.nav-links a.active { color: var(--text-primary); background: rgba(255, 255, 255, 0.04); }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.nav-lang {
  background: none; border: 1px solid var(--border); color: var(--text-secondary);
  padding: 6px 12px; border-radius: var(--radius-sm); cursor: pointer;
  font-size: 0.85rem; transition: all var(--transition);
}
.nav-lang:hover { border-color: var(--border-active); color: var(--text-primary); }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 20px; border-radius: var(--radius-sm);
  font-size: 0.9rem; font-weight: 600; cursor: pointer;
  transition: all var(--transition); border: none;
}
.btn-primary { background: var(--gradient-primary); color: #fff; }
.btn-primary:hover { box-shadow: 0 0 24px var(--accent-glow); transform: translateY(-1px); color: #fff; }
.btn-outline {
  background: transparent; border: 1px solid var(--border-active);
  color: var(--accent);
}
.btn-outline:hover { background: rgba(59, 130, 246, 0.08); }
.btn-lg { padding: 14px 32px; font-size: 1rem; border-radius: var(--radius); }

/* Mobile nav */
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 4px; }
.nav-toggle span { display: block; width: 24px; height: 2px; margin: 5px 0; background: var(--text-primary); transition: var(--transition); }

/* ===== Hero ===== */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  padding: 120px 24px 80px; overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% -20%, rgba(59, 130, 246, 0.12), transparent),
    radial-gradient(ellipse 40% 40% at 80% 50%, rgba(6, 182, 212, 0.06), transparent),
    radial-gradient(ellipse 30% 50% at 20% 80%, rgba(59, 130, 246, 0.05), transparent);
}
.hero-grid {
  position: absolute; inset: 0; opacity: 0.03;
  background-image: linear-gradient(rgba(255,255,255,0.3) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,0.3) 1px, transparent 1px);
  background-size: 60px 60px;
}
.hero-content { position: relative; text-align: center; max-width: 800px; }
.hero-badge {
  display: inline-block; padding: 6px 16px;
  border: 1px solid var(--border-active); border-radius: 100px;
  font-size: 0.85rem; color: var(--accent);
  background: rgba(59, 130, 246, 0.06);
  margin-bottom: 32px;
}
.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4rem); font-weight: 800;
  line-height: 1.15; margin-bottom: 24px;
  letter-spacing: -0.02em;
}
.hero h1 .gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: 1.2rem; color: var(--text-secondary);
  line-height: 1.7; margin-bottom: 40px; max-width: 600px;
  margin-left: auto; margin-right: auto;
}
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ===== Section Styles ===== */
.section { padding: 100px 24px; }
.section-header { text-align: center; margin-bottom: 64px; }
.section-tag {
  display: inline-block; font-family: var(--font-mono);
  font-size: 0.8rem; color: var(--accent); text-transform: uppercase;
  letter-spacing: 0.1em; margin-bottom: 16px;
}
.section-title { font-size: clamp(1.8rem, 4vw, 2.5rem); font-weight: 700; margin-bottom: 16px; }
.section-desc { color: var(--text-secondary); font-size: 1.1rem; max-width: 600px; margin: 0 auto; }

/* ===== Feature Cards ===== */
.features-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px; max-width: var(--max-width); margin: 0 auto;
}
.feature-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px;
  transition: all var(--transition);
  position: relative; overflow: hidden;
}
.feature-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: var(--gradient-primary); opacity: 0; transition: opacity var(--transition);
}
.feature-card:hover {
  border-color: var(--border-active);
  box-shadow: var(--shadow-elevated);
  transform: translateY(-2px);
}
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 48px; height: 48px;
  background: rgba(59, 130, 246, 0.1); border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px; font-size: 1.5rem;
}
.feature-card h3 { font-size: 1.15rem; margin-bottom: 12px; }
.feature-card p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.65; }

/* ===== Highlights ===== */
.highlight-row {
  display: flex; align-items: center; gap: 80px;
  max-width: var(--max-width); margin: 0 auto;
  padding: 40px 0;
}
.highlight-row + .highlight-row { border-top: 1px solid var(--border); }
.highlight-row.reverse { flex-direction: row-reverse; }
.highlight-text { flex: 1; }
.highlight-num {
  font-family: var(--font-mono); font-size: 0.85rem;
  color: var(--accent); margin-bottom: 12px;
}
.highlight-text h3 { font-size: 1.5rem; margin-bottom: 16px; }
.highlight-text p { color: var(--text-secondary); font-size: 1rem; line-height: 1.7; }
.highlight-visual {
  flex: 1; background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 40px;
  display: flex; align-items: center; justify-content: center;
  min-height: 280px;
}

/* ===== Stats ===== */
.stats-bar {
  max-width: var(--max-width); margin: 0 auto;
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat-item { text-align: center; padding: 32px 16px; }
.stat-value {
  font-size: 2.5rem; font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
  font-family: var(--font-mono);
}
.stat-label { color: var(--text-secondary); font-size: 0.9rem; margin-top: 8px; }

/* ===== CTA ===== */
.cta-section {
  text-align: center; padding: 80px 24px;
  background: radial-gradient(ellipse 60% 60% at 50% 50%, rgba(59, 130, 246, 0.06), transparent);
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
}
.cta-section h2 { font-size: 2rem; margin-bottom: 16px; }
.cta-section p { color: var(--text-secondary); margin-bottom: 32px; font-size: 1.1rem; }

/* ===== Footer ===== */
.footer {
  padding: 60px 24px 40px;
  border-top: 1px solid var(--border);
  background: var(--bg-secondary);
}
.footer-grid {
  max-width: var(--max-width); margin: 0 auto;
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px;
}
.footer-brand h3 { font-size: 1.2rem; margin-bottom: 12px; }
.footer-brand p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.7; }
.footer-col h4 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-muted); margin-bottom: 16px; }
.footer-col a { display: block; color: var(--text-secondary); font-size: 0.9rem; padding: 4px 0; transition: color var(--transition); }
.footer-col a:hover { color: var(--text-primary); }
.footer-bottom {
  max-width: var(--max-width); margin: 48px auto 0; padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 16px;
  font-size: 0.85rem; color: var(--text-muted);
}

/* ===== Page Hero (subpages) ===== */
.page-hero {
  padding: 140px 24px 80px;
  text-align: center;
  position: relative; overflow: hidden;
}
.page-hero::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse 60% 40% at 50% 0%, rgba(59, 130, 246, 0.1), transparent);
}
.page-hero h1 { font-size: clamp(2rem, 5vw, 3rem); font-weight: 800; position: relative; }
.page-hero p { color: var(--text-secondary); font-size: 1.15rem; margin-top: 16px; position: relative; max-width: 600px; margin-left: auto; margin-right: auto; }

/* ===== Products Page ===== */
.product-block {
  max-width: var(--max-width); margin: 0 auto 80px;
  display: flex; align-items: flex-start; gap: 64px;
  padding: 0 24px;
}
.product-block.reverse { flex-direction: row-reverse; }
.product-block-icon {
  flex-shrink: 0; width: 64px; height: 64px;
  background: rgba(59, 130, 246, 0.1); border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  font-size: 2rem;
}
.product-block-content h2 { font-size: 1.6rem; margin-bottom: 16px; }
.product-block-content p { color: var(--text-secondary); line-height: 1.7; margin-bottom: 16px; }
.product-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.tag {
  padding: 4px 12px; background: rgba(59, 130, 246, 0.08);
  border: 1px solid rgba(59, 130, 246, 0.15);
  border-radius: 100px; font-size: 0.8rem; color: var(--accent);
}

/* ===== Pricing Page ===== */
.pricing-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px; max-width: var(--max-width); margin: 0 auto;
}
.pricing-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 36px 28px;
  transition: all var(--transition); position: relative;
}
.pricing-card.featured {
  border-color: var(--accent);
  box-shadow: 0 0 32px rgba(59, 130, 246, 0.08);
}
.pricing-card.featured::before {
  content: '推荐'; position: absolute; top: 14px; right: 14px;
  background: var(--gradient-primary); color: #fff;
  font-size: 0.75rem; padding: 3px 10px; border-radius: 100px;
}
.pricing-name { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
.pricing-price {
  font-size: 2.5rem; font-weight: 800; font-family: var(--font-mono);
  margin-bottom: 4px;
}
.pricing-price span { font-size: 1rem; font-weight: 400; color: var(--text-secondary); }
.pricing-desc { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 24px; }
.pricing-features { list-style: none; margin-bottom: 28px; }
.pricing-features li {
  padding: 8px 0; color: var(--text-secondary); font-size: 0.9rem;
  display: flex; align-items: center; gap: 10px;
}
.pricing-features li::before { content: '✓'; color: var(--success); font-weight: 700; }

/* ===== About Page ===== */
.about-grid {
  max-width: var(--max-width); margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px;
  align-items: center;
}
.about-text h2 { font-size: 1.8rem; margin-bottom: 20px; }
.about-text p { color: var(--text-secondary); line-height: 1.7; margin-bottom: 16px; }
.about-visual {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 48px;
  text-align: center;
}
.company-info {
  max-width: var(--max-width); margin: 64px auto 0;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.info-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px;
  text-align: center;
}
.info-card .info-label { font-size: 0.8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; }
.info-card .info-value { font-size: 1.1rem; margin-top: 8px; }

/* ===== Buttons on cards ===== */
.pricing-card .btn,
.pricing-card .btn-outline { width: 100%; text-align: center; justify-content: center; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .highlight-row,
  .highlight-row.reverse { flex-direction: column; gap: 40px; }
  .highlight-visual { width: 100%; min-height: 200px; }
  .product-block,
  .product-block.reverse { flex-direction: column; gap: 32px; }
  .about-grid { grid-template-columns: 1fr; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column;
    position: absolute; top: 64px; left: 0; right: 0;
    background: var(--bg-secondary); border-bottom: 1px solid var(--border);
    padding: 16px;
  }
  .nav-toggle { display: block; }
  .hero-actions { flex-direction: column; align-items: center; }
  .features-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 400px; }
  .company-info { grid-template-columns: 1fr; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .section { padding: 60px 16px; }
  .page-hero { padding: 120px 16px 60px; }
  .nav-actions .btn { display: none; }
}

/* ===== Animations ===== */
.fade-up {
  opacity: 0; transform: translateY(24px);
  animation: fadeUp 0.6s ease forwards;
}
@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}
.fade-up:nth-child(1) { animation-delay: 0.1s; }
.fade-up:nth-child(2) { animation-delay: 0.2s; }
.fade-up:nth-child(3) { animation-delay: 0.3s; }
.fade-up:nth-child(4) { animation-delay: 0.4s; }
.fade-up:nth-child(5) { animation-delay: 0.5s; }
.fade-up:nth-child(6) { animation-delay: 0.6s; }

/* ===== Utility Classes ===== */
.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.text-center { text-align: center; }
.mt-16 { margin-top: 16px; }
.mt-32 { margin-top: 32px; }
.mb-16 { margin-bottom: 16px; }
.mb-32 { margin-bottom: 32px; }

/* ===== Data visualization accent elements ===== */
.data-chart-placeholder {
  width: 100%; height: 200px;
  background: linear-gradient(180deg, rgba(59, 130, 246, 0.05) 0%, transparent 100%);
  border: 1px solid var(--border); border-radius: var(--radius);
  position: relative; overflow: hidden;
}
.data-chart-placeholder::after {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0;
  height: 1px; background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.3;
}
.data-line {
  position: absolute; bottom: 30%; left: 0; right: 0;
  height: 100px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 400 100'%3E%3Cpath d='M0 80 L50 60 L100 70 L150 20 L200 40 L250 10 L300 50 L350 25 L400 35' fill='none' stroke='%233b82f6' stroke-width='2' opacity='0.3'/%3E%3C/svg%3E") no-repeat center/contain;
}