@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&family=Noto+Sans+SC:wght@300;400;500;700;900&display=swap');

:root {
  --bg-primary: #0a0e1a;
  --bg-secondary: #0f1424;
  --bg-card: #141929;
  --bg-card-hover: #1a2038;
  --accent-primary: #00d4ff;
  --accent-secondary: #7b61ff;
  --accent-gradient: linear-gradient(135deg, #00d4ff 0%, #7b61ff 100%);
  --accent-gradient-hover: linear-gradient(135deg, #00e5ff 0%, #8b71ff 100%);
  --text-primary: #f0f2f8;
  --text-secondary: #8b92a8;
  --text-muted: #5a6178;
  --border-color: rgba(255, 255, 255, 0.06);
  --border-glow: rgba(0, 212, 255, 0.15);
  --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.08);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --font-display: 'Outfit', 'Noto Sans SC', sans-serif;
  --font-body: 'Noto Sans SC', 'Outfit', sans-serif;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

::selection {
  background: rgba(0, 212, 255, 0.3);
  color: #fff;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}

@media (max-width: 768px) {
  .container {
    padding: 0 20px;
  }
}

/* ========== NAVIGATION ========== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: var(--transition-smooth);
}

.nav.scrolled {
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding: 12px 0;
}

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

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: 36px;
  list-style: none;
}

.nav-links a {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition-fast);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-gradient);
  transition: var(--transition-smooth);
  border-radius: 1px;
}

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

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

.nav-cta {
  padding: 10px 24px;
  background: var(--accent-gradient);
  border: none;
  border-radius: var(--radius-xl);
  color: #fff;
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 212, 255, 0.3);
}

.nav-mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

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

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .nav-cta {
    display: none;
  }
  .nav-mobile-toggle {
    display: flex;
  }
  .nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 14, 26, 0.95);
    backdrop-filter: blur(20px);
    padding: 20px;
    gap: 16px;
    border-bottom: 1px solid var(--border-color);
  }
}

/* ========== HERO ========== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at 30% 50%, rgba(0, 212, 255, 0.06) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 50%, rgba(123, 97, 255, 0.04) 0%, transparent 60%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 900px;
  padding: 0 20px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: var(--radius-xl);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--accent-primary);
  margin-bottom: 32px;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.8s 0.3s forwards;
}

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

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s 0.5s forwards;
}

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

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 48px;
  line-height: 1.8;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s 0.7s forwards;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s 0.9s forwards;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 36px;
  background: var(--accent-gradient);
  border: none;
  border-radius: var(--radius-xl);
  color: #fff;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
  text-decoration: none;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0, 212, 255, 0.35);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 36px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-xl);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-smooth);
  text-decoration: none;
}

.btn-secondary:hover {
  border-color: rgba(0, 212, 255, 0.4);
  background: rgba(0, 212, 255, 0.05);
  transform: translateY(-3px);
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  opacity: 0;
  animation: fadeInUp 0.8s 1.2s forwards;
}

.hero-scroll-indicator span {
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent-primary), transparent);
  animation: scrollPulse 2s infinite;
}

/* ========== SECTION COMMON ========== */
.section {
  padding: 120px 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 72px;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-primary);
  margin-bottom: 16px;
}

.section-label::before,
.section-label::after {
  content: '';
  width: 20px;
  height: 1px;
  background: var(--accent-primary);
  opacity: 0.4;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ========== ABOUT ========== */
.about {
  background: var(--bg-secondary);
}

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

.about-text p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 2;
  margin-bottom: 20px;
}

.about-text p strong {
  color: var(--text-primary);
  font-weight: 600;
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.stat-card {
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

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

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

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

.stat-number {
  font-family: var(--font-display);
  font-size: 2.8rem;
  font-weight: 900;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
  margin-bottom: 4px;
}

.stat-suffix {
  font-size: 1.6rem;
}

.stat-label {
  font-size: 0.88rem;
  color: var(--text-secondary);
  font-weight: 500;
}

@media (max-width: 768px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .about-stats {
    grid-template-columns: 1fr 1fr;
  }
}

/* ========== SERVICE PROCESS ========== */
.process {
  background: var(--bg-primary);
}

.process-timeline {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  position: relative;
  gap: 12px;
}

.process-timeline::before {
  content: '';
  position: absolute;
  top: 44px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: var(--border-color);
}

.process-timeline-line {
  position: absolute;
  top: 44px;
  left: 10%;
  width: 0;
  height: 2px;
  background: var(--accent-gradient);
  transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.process-step {
  flex: 1;
  text-align: center;
  position: relative;
  z-index: 1;
}

.step-icon {
  width: 88px;
  height: 88px;
  margin: 0 auto 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
  position: relative;
}

.step-icon svg {
  width: 32px;
  height: 32px;
  stroke: var(--accent-primary);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.process-step:hover .step-icon {
  border-color: var(--accent-primary);
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.2);
  transform: scale(1.08);
}

.step-number {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent-primary);
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}

.step-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.step-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 160px;
  margin: 0 auto;
}

@media (max-width: 768px) {
  .process-timeline {
    flex-direction: column;
    gap: 32px;
  }
  .process-timeline::before {
    display: none;
  }
  .process-timeline-line {
    display: none;
  }
  .process-step {
    display: flex;
    text-align: left;
    gap: 20px;
    align-items: center;
  }
  .step-icon {
    margin: 0;
    flex-shrink: 0;
    width: 72px;
    height: 72px;
  }
  .step-desc {
    max-width: none;
  }
}

/* ========== SERVICES ========== */
.services {
  background: var(--bg-secondary);
}

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

.service-card {
  padding: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.service-card::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.04) 0%, transparent 70%);
  opacity: 0;
  transition: var(--transition-smooth);
}

.service-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
}

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

.service-icon {
  width: 56px;
  height: 56px;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.15);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  transition: var(--transition-smooth);
}

.service-card:hover .service-icon {
  background: rgba(0, 212, 255, 0.12);
  border-color: rgba(0, 212, 255, 0.3);
}

.service-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--accent-primary);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.service-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.service-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.service-tag {
  padding: 4px 12px;
  background: rgba(0, 212, 255, 0.06);
  border: 1px solid rgba(0, 212, 255, 0.1);
  border-radius: var(--radius-xl);
  font-size: 0.75rem;
  color: var(--accent-primary);
  font-weight: 500;
}

@media (max-width: 768px) {
  .services-grid {
    grid-template-columns: 1fr;
  }
}

/* ========== CASES ========== */
.cases {
  background: var(--bg-primary);
}

.cases-featured {
  display: flex;
  flex-direction: column;
  gap: 32px;
  margin-bottom: 48px;
}

.case-card {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: center;
  padding: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.case-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--accent-gradient);
  opacity: 0;
  transition: var(--transition-smooth);
}

.case-card:hover {
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow);
}

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

.case-visual {
  aspect-ratio: 16/10;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.08), rgba(123, 97, 255, 0.08));
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.case-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-md);
  transition: var(--transition-smooth);
}

.case-card:hover .case-image {
  transform: scale(1.05);
}

.case-client {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent-primary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.case-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 16px;
  line-height: 1.3;
}

.case-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
}

.case-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.case-tag {
  padding: 4px 12px;
  background: rgba(123, 97, 255, 0.08);
  border: 1px solid rgba(123, 97, 255, 0.15);
  border-radius: var(--radius-xl);
  font-size: 0.75rem;
  color: var(--accent-secondary);
  font-weight: 500;
}

.cases-other {
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
}

.cases-other-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.cases-other-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.case-other-item {
  padding: 20px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  text-align: center;
  transition: var(--transition-smooth);
  position: relative;
  cursor: pointer;
}

.case-other-item:hover {
  border-color: var(--border-glow);
  transform: translateY(-3px);
}

.case-qr-popup {
  position: absolute;
  bottom: calc(100% + 16px);
  left: 50%;
  transform: translateX(-50%) scale(0.9);
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-smooth);
  z-index: 100;
  box-shadow: 0 16px 50px rgba(0, 0, 0, 0.5);
  pointer-events: none;
}

.case-qr-popup::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 10px solid transparent;
  border-top-color: var(--bg-card);
}

.case-other-item:hover .case-qr-popup {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) scale(1);
  pointer-events: auto;
}

.case-qr-popup img {
  width: 180px;
  height: 180px;
  border-radius: var(--radius-sm);
  background: #fff;
}

.case-qr-popup span {
  font-size: 0.85rem;
  color: var(--text-secondary);
  white-space: nowrap;
  font-weight: 500;
}

.case-other-name {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.case-other-type {
  font-size: 0.78rem;
  color: var(--text-muted);
}

@media (max-width: 768px) {
  .case-card {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 24px;
  }
  .cases-other-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ========== INDUSTRIES ========== */
.industries {
  background: var(--bg-secondary);
}

.industries-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

.industry-card {
  padding: 32px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.industry-card::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent-gradient);
  transform: scaleX(0);
  transition: var(--transition-smooth);
}

.industry-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
}

.industry-card:hover::before {
  transform: scaleX(1);
}

.industry-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.industry-icon svg {
  width: 32px;
  height: 32px;
  stroke: var(--accent-primary);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.industry-name {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
}

@media (max-width: 768px) {
  .industries-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
  }
  .industry-card {
    padding: 20px 12px;
  }
}

@media (max-width: 480px) {
  .industries-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ========== CONTACT ========== */
.contact {
  background: var(--bg-primary);
  position: relative;
}

.contact::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(0, 212, 255, 0.04) 0%, transparent 60%);
  pointer-events: none;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  position: relative;
  z-index: 1;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.contact-info-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 8px;
}

.contact-info-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

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

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

.contact-item-icon {
  width: 44px;
  height: 44px;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.15);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-item-icon svg {
  width: 18px;
  height: 18px;
  stroke: var(--accent-primary);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.contact-item-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 2px;
}

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

.contact-qr {
  margin-top: 8px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.contact-qr-img {
  width: 140px;
  height: 140px;
  border-radius: var(--radius-sm);
  background: #fff;
  object-fit: cover;
}

.contact-qr-label {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.contact-form {
  padding: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
}

.contact-form-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 28px;
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 14px 18px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.92rem;
  transition: var(--transition-fast);
  outline: none;
}

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

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

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

.form-submit {
  width: 100%;
  padding: 16px;
  background: var(--accent-gradient);
  border: none;
  border-radius: var(--radius-sm);
  color: #fff;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
  margin-top: 8px;
}

.form-submit:hover {
  box-shadow: 0 8px 30px rgba(0, 212, 255, 0.3);
  transform: translateY(-2px);
}

.form-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.form-toast {
  position: fixed;
  top: 24px;
  right: 24px;
  padding: 16px 28px;
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  font-weight: 500;
  z-index: 10000;
  opacity: 0;
  transform: translateX(40px);
  transition: var(--transition-smooth);
  pointer-events: none;
}

.form-toast.show {
  opacity: 1;
  transform: translateX(0);
  pointer-events: auto;
}

.form-toast.success {
  background: rgba(0, 212, 255, 0.12);
  border: 1px solid rgba(0, 212, 255, 0.3);
  color: var(--accent-primary);
}

.form-toast.error {
  background: rgba(255, 80, 80, 0.12);
  border: 1px solid rgba(255, 80, 80, 0.3);
  color: #ff5050;
}

@media (max-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* ========== FOOTER ========== */
.footer {
  padding: 60px 0 32px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-top: 16px;
  max-width: 300px;
}

.footer-col-title {
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.footer-links a:hover {
  color: var(--accent-primary);
}

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.footer-socials {
  display: flex;
  gap: 16px;
}

.footer-social {
  width: 36px;
  height: 36px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
}

.footer-social:hover {
  border-color: var(--accent-primary);
  background: rgba(0, 212, 255, 0.08);
}

.footer-social svg {
  width: 16px;
  height: 16px;
  stroke: var(--text-secondary);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.footer-social:hover svg {
  stroke: var(--accent-primary);
}

/* ========== IMAGE PREVIEW MODAL ========== */
.image-preview-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-smooth);
}

.image-preview-modal.active {
  opacity: 1;
  visibility: visible;
}

.image-preview-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 14, 26, 0.95);
  backdrop-filter: blur(10px);
  cursor: pointer;
}

.image-preview-container {
  position: relative;
  z-index: 1;
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  transform: scale(0.9);
  transition: var(--transition-smooth);
}

.image-preview-modal.active .image-preview-container {
  transform: scale(1);
}

.image-preview-img {
  max-width: 100%;
  max-height: 80vh;
  object-fit: contain;
  border-radius: var(--radius-md);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  cursor: pointer;
}

.image-preview-close {
  position: absolute;
  top: -48px;
  right: 0;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-fast);
}

.image-preview-close:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: rotate(90deg);
}

.image-preview-close svg {
  stroke: #fff;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.image-preview-caption {
  font-size: 0.95rem;
  color: var(--text-secondary);
  text-align: center;
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
}

/* 案例图片添加手型光标 */
.case-image {
  cursor: pointer;
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}

/* ========== ANIMATIONS ========== */
@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.4;
  }
}

@keyframes scrollPulse {
  0% {
    opacity: 0;
    transform: scaleY(0);
    transform-origin: top;
  }
  50% {
    opacity: 1;
    transform: scaleY(1);
    transform-origin: top;
  }
  51% {
    transform-origin: bottom;
  }
  100% {
    opacity: 0;
    transform: scaleY(0);
    transform-origin: bottom;
  }
}

.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* ========== BACK TO TOP ========== */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  background: var(--accent-gradient);
  border: none;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 999;
  opacity: 0;
  transform: translateY(20px);
  transition: var(--transition-smooth);
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 212, 255, 0.4);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
  stroke: #fff;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}