/* ===== Variables ===== */
:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-card: rgba(17, 24, 39, 0.6);
  --border: rgba(255, 255, 255, 0.08);
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-1: #6366f1;
  --accent-2: #8b5cf6;
  --accent-3: #06b6d4;
  --gradient: linear-gradient(135deg, #6366f1, #8b5cf6, #06b6d4);
  --gradient-text: linear-gradient(135deg, #818cf8, #a78bfa, #22d3ee);
  --glow: 0 0 60px rgba(99, 102, 241, 0.3);
  --radius: 16px;
  --radius-sm: 8px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --header-h: 72px;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + var(--safe-top));
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  padding-left: var(--safe-left);
  padding-right: var(--safe-right);
}

body.menu-open {
  overflow: hidden;
  touch-action: none;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition);
}

ul { list-style: none; }

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Particles Canvas ===== */
#particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* ===== Gradient Text ===== */
.gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: calc(var(--header-h) + var(--safe-top));
  padding-top: var(--safe-top);
  transition: background var(--transition), backdrop-filter var(--transition), box-shadow var(--transition);
}

.header.scrolled {
  background: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.25rem;
}

.logo-icon {
  width: 36px;
  height: 36px;
  color: var(--accent-1);
}

.logo-icon svg { width: 100%; height: 100%; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links a {
  padding: 8px 16px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.nav-links a:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.nav-cta {
  background: var(--gradient) !important;
  color: white !important;
  font-weight: 500;
}

.nav-cta:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  margin-right: -10px;
  min-width: 44px;
  min-height: 44px;
  -webkit-tap-highlight-color: transparent;
}

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

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
}

.btn-primary {
  background: var(--gradient);
  color: white;
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(99, 102, 241, 0.5);
}

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

.btn-outline:hover {
  border-color: var(--accent-1);
  background: rgba(99, 102, 241, 0.1);
}

.btn-full { width: 100%; justify-content: center; }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 60px;
  padding: calc(var(--header-h) + 60px) 24px 80px;
  max-width: 1200px;
  margin: 0 auto;
  z-index: 1;
}

.hero-glow {
  position: absolute;
  top: 20%;
  left: 10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
  pointer-events: none;
  animation: pulse-glow 4s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.1); }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px 6px 10px;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 100px;
  font-size: 0.85rem;
  color: var(--accent-1);
  margin-bottom: 24px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background: #22c55e;
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.4); }
  50% { opacity: 0.8; box-shadow: 0 0 0 8px rgba(34, 197, 94, 0); }
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.hero-desc {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 520px;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 32px;
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-num {
  font-size: 2rem;
  font-weight: 700;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-plus {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-1);
  display: inline;
}

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

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* Code Window */
.hero-visual {
  position: relative;
}

.code-window {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--glow), 0 25px 50px rgba(0, 0, 0, 0.5);
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.code-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: rgba(0, 0, 0, 0.3);
  border-bottom: 1px solid var(--border);
}

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

.dot.red { background: #ef4444; }
.dot.yellow { background: #eab308; }
.dot.green { background: #22c55e; }

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

.code-body {
  padding: 24px;
  font-family: 'Consolas', 'Monaco', monospace;
  font-size: 0.875rem;
  line-height: 1.8;
  overflow-x: auto;
}

.code-body .kw { color: #c678dd; }
.code-body .fn { color: #61afef; }
.code-body .str { color: #98c379; }
.code-body .cm { color: #5c6370; font-style: italic; }

.scroll-hint {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.75rem;
  animation: bounce 2s ease-in-out infinite;
}

.scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid var(--text-muted);
  border-bottom: 2px solid var(--text-muted);
  transform: rotate(45deg);
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ===== Sections ===== */
.section {
  position: relative;
  padding: 100px 0;
  z-index: 1;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--accent-1);
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-desc {
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
  font-size: 1.05rem;
}

/* ===== Services ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  position: relative;
  padding: 36px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(10px);
  transition: all var(--transition);
  overflow: hidden;
}

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

.service-card:hover {
  transform: translateY(-8px);
  border-color: rgba(99, 102, 241, 0.3);
  box-shadow: var(--glow);
}

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

.service-card.featured {
  border-color: rgba(99, 102, 241, 0.3);
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.08), rgba(139, 92, 246, 0.05));
}

.service-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(99, 102, 241, 0.1);
  border-radius: 14px;
  color: var(--accent-1);
  margin-bottom: 24px;
}

.service-icon svg { width: 32px; height: 32px; }

.service-tag {
  position: absolute;
  top: 20px;
  right: 20px;
  padding: 4px 10px;
  background: var(--gradient);
  border-radius: 100px;
  font-size: 0.7rem;
  font-weight: 600;
  color: white;
}

.service-card h3 {
  font-size: 1.35rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.service-card > p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 20px;
}

.service-features {
  margin-bottom: 24px;
}

.service-features li {
  position: relative;
  padding-left: 20px;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.service-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--accent-3);
  font-weight: 600;
}

.service-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--accent-1);
  transition: gap var(--transition);
}

.service-link:hover { color: var(--accent-2); }

/* ===== Tech Marquee ===== */
.tech-stack {
  padding: 60px 0;
  overflow: hidden;
}

.tech-marquee {
  mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}

.marquee-track {
  display: flex;
  gap: 16px;
  animation: marquee 30s linear infinite;
  width: max-content;
}

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.tech-item {
  flex-shrink: 0;
  padding: 12px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  white-space: nowrap;
  transition: all var(--transition);
}

.tech-item:hover {
  border-color: var(--accent-1);
  color: var(--text-primary);
  background: rgba(99, 102, 241, 0.1);
}

/* ===== Process ===== */
.process-timeline {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
  position: relative;
}

.process-timeline::before {
  content: '';
  position: absolute;
  top: 28px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-1), var(--accent-2), var(--accent-3));
  opacity: 0.3;
}

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

.step-num {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  background: var(--bg-secondary);
  border: 2px solid var(--accent-1);
  border-radius: 50%;
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent-1);
  position: relative;
  z-index: 1;
  transition: all var(--transition);
}

.process-step:hover .step-num {
  background: var(--gradient);
  color: white;
  border-color: transparent;
  transform: scale(1.1);
}

.step-content h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.step-content p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ===== Cases ===== */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

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

.case-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--glow);
}

.case-image {
  height: 200px;
  position: relative;
  overflow: hidden;
}

.case-1 {
  background: linear-gradient(135deg, #1e3a5f, #6366f1);
}

.case-2 {
  background: linear-gradient(135deg, #4a1942, #ec4899);
}

.case-3 {
  background: linear-gradient(135deg, #134e4a, #06b6d4);
}

.case-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: flex-start;
  justify-content: flex-end;
  padding: 16px;
}

.case-tag {
  padding: 4px 12px;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(10px);
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 500;
}

.case-info {
  padding: 24px;
}

.case-info h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

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

/* ===== About ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-text {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin: 20px 0 36px;
  line-height: 1.8;
}

.about-features {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.about-feature {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.feature-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.about-feature h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.about-feature p {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* Orbit Animation */
.orbit-system {
  position: relative;
  width: 360px;
  height: 360px;
  margin: 0 auto;
}

.orbit-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient);
  border-radius: 50%;
  font-weight: 800;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  box-shadow: var(--glow);
  z-index: 2;
}

.orbit-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.ring-1 {
  width: 160px;
  height: 160px;
  animation: orbit 8s linear infinite;
}

.ring-2 {
  width: 240px;
  height: 240px;
  animation: orbit 12s linear infinite reverse;
}

.ring-3 {
  width: 320px;
  height: 320px;
  animation: orbit 16s linear infinite;
}

.orbit-dot {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  padding: 6px 14px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--accent-1);
}

@keyframes orbit {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* ===== Contact ===== */
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  padding: 60px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 24px;
  backdrop-filter: blur(10px);
}

.contact-info .section-title {
  text-align: left;
}

.contact-info > p {
  color: var(--text-secondary);
  margin-bottom: 36px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
}

.contact-item svg {
  width: 24px;
  height: 24px;
  color: var(--accent-1);
  flex-shrink: 0;
}

.contact-item span {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.contact-item strong {
  font-size: 0.95rem;
  font-weight: 500;
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

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

.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 16px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 16px;
  transition: border-color var(--transition);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent-1);
}

.form-group select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
}

.form-group textarea { resize: vertical; min-height: 100px; }

/* ===== Footer ===== */
.footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border);
  padding-top: 60px;
}

.footer-content {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 60px;
  padding-bottom: 40px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 16px;
  max-width: 320px;
}

.footer-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-secondary);
}

.footer-col a {
  display: block;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 10px;
  transition: color var(--transition);
}

.footer-col a:hover { color: var(--text-primary); }

.footer-bottom {
  padding: 24px 0;
  border-top: 1px solid var(--border);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-bottom .icp a {
  color: var(--text-muted);
  transition: color var(--transition);
}

.footer-bottom .icp a:hover {
  color: var(--text-secondary);
}

/* ===== AOS Animation ===== */
[data-aos] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos].visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    padding-top: calc(var(--header-h) + var(--safe-top) + 40px);
    min-height: auto;
    gap: 40px;
  }

  .hero-content.container {
    padding-left: 20px;
    padding-right: 20px;
  }

  .hero-desc { margin: 0 auto 36px; }
  .hero-actions { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-visual {
    max-width: 100%;
    width: 100%;
    padding: 0 20px;
  }
  .scroll-hint { display: none; }

  .services-grid,
  .cases-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }

  .process-timeline {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  .process-timeline::before { display: none; }

  .about-grid,
  .contact-wrapper {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .contact-wrapper { padding: 36px 24px; }
  .contact-info .section-title { text-align: center; }
  .contact-info > p { text-align: center; }

  .footer-content {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  :root {
    --header-h: 56px;
  }

  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .nav-links {
    position: fixed;
    top: calc(var(--header-h) + var(--safe-top));
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    justify-content: flex-start;
    background: rgba(10, 14, 23, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 16px 16px calc(24px + var(--safe-bottom));
    gap: 4px;
    transform: translateX(100%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition), opacity var(--transition), visibility var(--transition);
    border-bottom: 1px solid var(--border);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .nav-links.open {
    transform: translateX(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-links li {
    width: 100%;
  }

  .nav-links a {
    width: 100%;
    text-align: center;
    padding: 14px 16px;
    font-size: 1rem;
    min-height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .nav-cta {
    margin-top: 8px;
  }

  .menu-toggle { display: flex; }

  .menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .menu-toggle.active span:nth-child(2) { opacity: 0; }

  .menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .logo {
    font-size: 1.1rem;
    gap: 8px;
  }

  .logo-icon {
    width: 32px;
    height: 32px;
  }

  /* Hero */
  .hero {
    padding: calc(var(--header-h) + var(--safe-top) + 24px) 0 48px;
    gap: 32px;
  }

  .hero-glow {
    width: 280px;
    height: 280px;
    top: 10%;
    left: 50%;
    transform: translateX(-50%);
  }

  .hero-badge {
    font-size: 0.75rem;
    padding: 5px 12px 5px 8px;
    margin-bottom: 16px;
  }

  .hero-title {
    font-size: clamp(1.75rem, 8vw, 2.25rem);
    margin-bottom: 16px;
  }

  .hero-desc {
    font-size: 0.95rem;
    margin-bottom: 28px;
    padding: 0 4px;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
    gap: 12px;
    margin-bottom: 32px;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
    padding: 14px 20px;
    min-height: 48px;
  }

  .hero-stats {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0;
    width: 100%;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 8px;
  }

  .stat-item {
    flex: 1;
    min-width: 0;
    align-items: center;
    text-align: center;
  }

  .stat-num {
    font-size: 1.5rem;
  }

  .stat-plus {
    font-size: 1.1rem;
  }

  .stat-label {
    font-size: 0.75rem;
  }

  .stat-divider {
    display: block;
    width: 1px;
    height: 36px;
    align-self: center;
  }

  .code-window {
    animation: none;
  }

  .code-body {
    padding: 16px;
    font-size: 0.7rem;
    line-height: 1.6;
  }

  /* Sections */
  .section {
    padding: 56px 0;
  }

  .section-header {
    margin-bottom: 40px;
  }

  .section-title {
    font-size: clamp(1.5rem, 6vw, 2rem);
  }

  .section-desc {
    font-size: 0.9rem;
    padding: 0 8px;
  }

  .services-grid,
  .cases-grid {
    max-width: none;
    gap: 16px;
  }

  .service-card {
    padding: 24px 20px;
  }

  .service-card h3 {
    font-size: 1.2rem;
  }

  .service-card:hover {
    transform: none;
  }

  .tech-stack {
    padding: 40px 0;
  }

  .tech-item {
    padding: 10px 20px;
    font-size: 0.85rem;
  }

  /* Process - vertical timeline */
  .process-timeline {
    max-width: none;
    gap: 0;
    padding-left: 20px;
    border-left: 2px solid rgba(99, 102, 241, 0.2);
  }

  .process-step {
    text-align: left;
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 20px 0 20px 20px;
    position: relative;
  }

  .process-step .step-num {
    width: 44px;
    height: 44px;
    min-width: 44px;
    font-size: 0.85rem;
    margin: 0;
    position: absolute;
    left: -33px;
    top: 20px;
  }

  .step-content h3 {
    font-size: 1rem;
    margin-bottom: 6px;
  }

  .step-content p {
    font-size: 0.85rem;
  }

  .case-image {
    height: 160px;
  }

  .case-info {
    padding: 20px;
  }

  .case-card:hover {
    transform: none;
  }

  /* About */
  .about-grid {
    gap: 32px;
  }

  .about-content .section-title {
    text-align: center;
  }

  .about-content .section-tag {
    display: block;
    text-align: center;
  }

  .about-text {
    font-size: 0.95rem;
    text-align: center;
  }

  .orbit-system {
    width: 260px;
    height: 260px;
  }

  .orbit-center {
    width: 64px;
    height: 64px;
    font-size: 0.75rem;
  }

  .ring-1 { width: 110px; height: 110px; }
  .ring-2 { width: 170px; height: 170px; }
  .ring-3 { width: 230px; height: 230px; }

  /* Contact */
  .contact-wrapper {
    padding: 24px 16px;
    border-radius: var(--radius);
    gap: 32px;
  }

  .contact-details {
    gap: 20px;
  }

  .contact-item strong {
    font-size: 0.9rem;
    word-break: break-all;
  }

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

  .btn-primary:hover,
  .btn-outline:hover,
  .service-card:hover,
  .case-card:hover {
    transform: none;
  }

  /* Footer */
  .footer {
    padding-top: 40px;
    padding-bottom: var(--safe-bottom);
  }

  .footer-content {
    gap: 24px;
  }

  .footer-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .footer-brand p {
    font-size: 0.85rem;
  }

  .footer-bottom {
    padding: 20px 16px calc(20px + var(--safe-bottom));
  }

  .footer-bottom p {
    font-size: 0.75rem;
    line-height: 1.6;
    padding: 0 8px;
  }
}

@media (max-width: 380px) {
  .hero-title br {
    display: none;
  }

  .hero-stats {
    flex-direction: column;
    gap: 12px;
    padding: 16px;
  }

  .stat-divider {
    display: none;
  }

  .stat-item {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2px 4px;
  }

  .stat-label {
    width: 100%;
  }
}

@media (hover: hover) and (pointer: fine) {
  .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.5);
  }

  .service-card:hover {
    transform: translateY(-8px);
  }

  .case-card:hover {
    transform: translateY(-8px);
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .code-window {
    animation: none;
  }

  [data-aos] {
    opacity: 1;
    transform: none;
  }
}