/* ========================================
   Dragon Byte Design - Main Stylesheet
   Dark Tech Theme · Bilingual EN/ZH
   ======================================== */

/* ── Bilingual Typography ── */
.bilingual-heading {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.bilingual-heading .en {
  font-size: inherit;
  font-weight: 800;
  line-height: 1.15;
}

.bilingual-heading .zh {
  font-size: 0.45em;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  line-height: 1.6;
}

.section-label-bilingual {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 0.75rem;
}

.section-label-bilingual .en-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-cyan);
}

.section-label-bilingual .zh-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.section-label-bilingual .divider {
  width: 1px;
  height: 12px;
  background: var(--text-muted);
  opacity: 0.4;
}

.bilingual-desc {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.bilingual-desc .en {
  color: var(--text-secondary);
  font-size: 1.05rem;
}

.bilingual-desc .zh {
  color: var(--text-muted);
  font-size: 0.9rem;
  letter-spacing: 0.02em;
}

.lang-tag {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-size: 0.65rem;
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: 0.05em;
  vertical-align: middle;
  margin-right: 0.4rem;
}

.lang-tag--en {
  background: rgba(0, 212, 255, 0.1);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 212, 255, 0.2);
}

.lang-tag--zh {
  background: rgba(124, 58, 237, 0.1);
  color: #a78bfa;
  border: 1px solid rgba(124, 58, 237, 0.2);
}

/* CSS Variables */
:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #0f0f1a;
  --bg-card: #13131f;
  --bg-card-hover: #1a1a2e;
  --accent-cyan: #00d4ff;
  --accent-purple: #7c3aed;
  --accent-gradient: linear-gradient(135deg, #00d4ff, #7c3aed);
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #475569;
  --border: rgba(255, 255, 255, 0.08);
  --border-accent: rgba(0, 212, 255, 0.3);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-accent: 0 0 30px rgba(0, 212, 255, 0.15);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 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-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

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

ul { list-style: none; }

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

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--text-primary);
  margin-bottom: 1.25rem;
}

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

/* ========================================
   Layout Utilities
   ======================================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 6rem 0;
}

.section--alt {
  background-color: var(--bg-secondary);
}

.text-center { text-align: center; }
.text-center .section-desc { margin: 0 auto; }

.gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  outline: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #fff;
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 35px rgba(0, 212, 255, 0.5);
}

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

.btn-outline:hover {
  background: rgba(0, 212, 255, 0.08);
  border-color: var(--accent-cyan);
  transform: translateY(-2px);
}

/* ========================================
   Navbar
   ======================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1.25rem 0;
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(10, 10, 15, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0.9rem 0;
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--accent-gradient);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 900;
  color: #fff;
  flex-shrink: 0;
}

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

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

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-gradient);
  transition: width var(--transition);
}

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

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

.nav-cta {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Mobile Nav Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 5rem;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.15;
}

.hero-orb--1 {
  width: 600px;
  height: 600px;
  background: var(--accent-cyan);
  top: -200px;
  right: -100px;
}

.hero-orb--2 {
  width: 400px;
  height: 400px;
  background: var(--accent-purple);
  bottom: -100px;
  left: -100px;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid var(--border-accent);
  border-radius: 100px;
  font-size: 0.82rem;
  font-family: var(--font-mono);
  color: var(--accent-cyan);
  margin-bottom: 1.5rem;
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin-bottom: 1.5rem;
  line-height: 1.1;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  max-width: 500px;
}

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

.hero-stats {
  display: flex;
  gap: 2.5rem;
  margin-top: 3.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

/* Hero Visual (code window) */
.hero-visual {
  position: relative;
}

.code-window {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow), var(--shadow-accent);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.code-window-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 1.25rem;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--border);
}

.code-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.code-dot--red { background: #ff5f57; }
.code-dot--yellow { background: #febc2e; }
.code-dot--green { background: #28c840; }

.code-filename {
  margin-left: auto;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.code-body {
  padding: 1.5rem;
  line-height: 1.8;
}

.code-line {
  display: flex;
  gap: 1.5rem;
}

.line-num {
  color: var(--text-muted);
  min-width: 1.5rem;
  text-align: right;
  user-select: none;
}

.c-keyword { color: #c792ea; }
.c-func { color: #82aaff; }
.c-string { color: #c3e88d; }
.c-comment { color: #546e7a; font-style: italic; }
.c-cyan { color: var(--accent-cyan); }
.c-orange { color: #f78c6c; }

/* ========================================
   Services Section
   ======================================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 3.5rem;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent-gradient);
  opacity: 0;
  transition: opacity var(--transition);
}

.service-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow), var(--shadow-accent);
}

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

.service-icon {
  width: 52px;
  height: 52px;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
  transition: var(--transition);
}

.service-card:hover .service-icon {
  background: rgba(0, 212, 255, 0.15);
  transform: scale(1.1);
}

.service-card h3 {
  font-size: 1.15rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.service-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.25rem;
}

.tag {
  padding: 0.25rem 0.75rem;
  background: rgba(0, 212, 255, 0.06);
  border: 1px solid rgba(0, 212, 255, 0.15);
  border-radius: 100px;
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

/* ========================================
   Process Section
   ======================================== */
.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  margin-top: 3.5rem;
  position: relative;
}

.process-steps::before {
  content: '';
  position: absolute;
  top: 2.2rem;
  left: 2.5rem;
  right: 2.5rem;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-accent), transparent);
}

.process-step {
  text-align: center;
  position: relative;
}

.step-number {
  width: 44px;
  height: 44px;
  background: var(--accent-gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.9rem;
  margin: 0 auto 1.25rem;
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
  position: relative;
  z-index: 1;
}

.process-step h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.process-step p {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* ========================================
   Tech Stack Section
   ======================================== */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 1rem;
  margin-top: 3rem;
}

.tech-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1rem;
  text-align: center;
  transition: var(--transition);
  cursor: default;
}

.tech-item:hover {
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-accent);
}

.tech-item .tech-icon {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.tech-item span {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

/* ========================================
   CTA Section
   ======================================== */
.cta-section {
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(0, 212, 255, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.cta-card {
  background: var(--bg-card);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-lg);
  padding: 4rem 3rem;
  text-align: center;
  position: relative;
  z-index: 1;
  box-shadow: var(--shadow), var(--shadow-accent);
}

.cta-card h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  margin-bottom: 1rem;
}

.cta-card p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto 2.5rem;
}

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

/* ========================================
   Footer
   ======================================== */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 3.5rem 0 2rem;
}

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

.footer-brand p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 1rem;
  max-width: 280px;
  line-height: 1.8;
}

.footer-col h4 {
  font-size: 0.85rem;
  font-family: var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

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

.footer-col a:hover {
  color: var(--accent-cyan);
}

.social-links {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.social-link {
  width: 38px;
  height: 38px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: var(--transition);
}

.social-link:hover {
  background: rgba(0, 212, 255, 0.1);
  border-color: var(--border-accent);
  transform: translateY(-2px);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ========================================
   Page Hero (inner pages)
   ======================================== */
.page-hero {
  padding: 9rem 0 5rem;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at top left, rgba(0, 212, 255, 0.07) 0%, transparent 60%);
  pointer-events: none;
}

.page-hero .container {
  position: relative;
  z-index: 1;
}

.page-hero h1 {
  font-size: clamp(2.25rem, 4vw, 3.5rem);
  margin-bottom: 1.25rem;
}

.page-hero p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 580px;
}

/* ========================================
   About Page
   ======================================== */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-intro-text h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  margin-bottom: 1.5rem;
}

.about-intro-text p {
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  line-height: 1.8;
}

.about-visual {
  position: relative;
}

.about-card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.about-stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
  transition: var(--transition);
}

.about-stat-card:hover {
  border-color: var(--border-accent);
  box-shadow: var(--shadow-accent);
}

.about-stat-card .num {
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.about-stat-card .lbl {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 0.3rem;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}

.value-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: var(--transition);
}

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

.value-card .icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.value-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.6rem;
}

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

/* Team Section */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}

.team-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
  transition: var(--transition);
}

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

.team-avatar {
  width: 80px;
  height: 80px;
  background: var(--accent-gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin: 0 auto 1.25rem;
}

.team-card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.3rem;
}

.team-card .role {
  font-size: 0.85rem;
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  margin-bottom: 0.75rem;
}

.team-card .bio {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* ========================================
   Services Page
   ======================================== */
.services-detail {
  display: flex;
  flex-direction: column;
  gap: 4rem;
  margin-top: 3rem;
}

.service-detail-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.service-detail-item:nth-child(even) {
  direction: rtl;
}

.service-detail-item:nth-child(even) > * {
  direction: ltr;
}

.service-detail-content h2 {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  margin-bottom: 1rem;
}

.service-detail-content p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.8;
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.925rem;
  color: var(--text-secondary);
}

.feature-list li::before {
  content: '→';
  color: var(--accent-cyan);
  flex-shrink: 0;
  margin-top: 0.1rem;
  font-family: var(--font-mono);
}

.service-detail-visual {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 300px;
  font-size: 5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.service-detail-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(0, 212, 255, 0.06) 0%, transparent 70%);
}

/* Pricing */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 3.5rem;
  align-items: start;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  transition: var(--transition);
}

.pricing-card.featured {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
  box-shadow: var(--shadow-accent);
  transform: scale(1.03);
}

.pricing-card .plan-name {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 1rem;
}

.pricing-card .price {
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 0.25rem;
}

.pricing-card .price span {
  font-size: 1rem;
  font-weight: 400;
  color: var(--text-secondary);
}

.pricing-card .desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 1.75rem;
  padding-bottom: 1.75rem;
  border-bottom: 1px solid var(--border);
}

.pricing-features {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.pricing-features li .check {
  color: var(--accent-cyan);
  flex-shrink: 0;
}

/* ========================================
   Contact Page
   ======================================== */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 4rem;
  margin-top: 3rem;
}

.contact-info h2 {
  font-size: 1.75rem;
  margin-bottom: 1rem;
}

.contact-info p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 2rem;
}

.contact-items {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.contact-item-icon {
  width: 42px;
  height: 42px;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.contact-item-text strong {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 0.2rem;
}

.contact-item-text span {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* Contact Form */
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: var(--font-sans);
  transition: var(--transition);
  outline: none;
  width: 100%;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-group select option {
  background: var(--bg-card);
}

.form-group textarea {
  resize: vertical;
  min-height: 130px;
}

.form-submit {
  width: 100%;
  padding: 0.9rem;
  font-size: 1rem;
}

/* Success Message */
.form-success {
  display: none;
  text-align: center;
  padding: 2rem;
}

.form-success.visible {
  display: block;
}

.form-success .success-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.form-success h3 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.form-success p {
  color: var(--text-secondary);
}

/* ========================================
   Scroll Animations
   ======================================== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Stagger delays */
.fade-in:nth-child(1) { transition-delay: 0s; }
.fade-in:nth-child(2) { transition-delay: 0.1s; }
.fade-in:nth-child(3) { transition-delay: 0.2s; }
.fade-in:nth-child(4) { transition-delay: 0.3s; }
.fade-in:nth-child(5) { transition-delay: 0.4s; }
.fade-in:nth-child(6) { transition-delay: 0.5s; }

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

  .hero-desc { margin: 0 auto 2.5rem; }
  .hero-actions { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-visual { display: none; }

  .about-intro { grid-template-columns: 1fr; }
  .service-detail-item { grid-template-columns: 1fr; }
  .service-detail-item:nth-child(even) { direction: ltr; }

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

@media (max-width: 768px) {
  .section { padding: 4rem 0; }

  .nav-links,
  .nav-cta {
    display: none;
    flex-direction: column;
    align-items: flex-start;
    padding: 1rem 0;
  }

  .nav-links.open,
  .nav-cta.open {
    display: flex;
  }

  .nav-toggle { display: flex; }

  .navbar .container {
    flex-wrap: wrap;
  }

  .nav-mobile-menu {
    display: none;
    width: 100%;
    padding: 1rem 0;
    border-top: 1px solid var(--border);
    margin-top: 1rem;
  }

  .nav-mobile-menu.open {
    display: block;
  }

  .nav-mobile-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.5rem;
  }

  .nav-mobile-links a {
    font-size: 1rem;
    color: var(--text-secondary);
  }

  .form-row { grid-template-columns: 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
  .pricing-card.featured { transform: none; }

  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }
}