/* ===================================
   丰策睿启科技 — 官方网站样式
   Premium dark theme with gradient accents
   =================================== */

/* --- CSS Custom Properties --- */
:root {
  --color-bg: #0B1120;
  --color-bg-alt: #111827;
  --color-surface: #1F2937;
  --color-surface-hover: #374151;
  --color-border: rgba(255, 255, 255, 0.06);
  --color-border-light: rgba(255, 255, 255, 0.1);

  --color-text: #F9FAFB;
  --color-text-secondary: #9CA3AF;
  --color-text-muted: #6B7280;

  --color-primary: #3B82F6;
  --color-primary-dark: #2563EB;
  --color-secondary: #8B5CF6;
  --color-accent: #F59E0B;
  --color-success: #10B981;
  --color-danger: #EF4444;

  --gradient-primary: linear-gradient(135deg, #3B82F6, #8B5CF6);
  --gradient-warm: linear-gradient(135deg, #F59E0B, #EF4444);
  --gradient-cool: linear-gradient(135deg, #10B981, #06B6D4);

  --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", "SF Mono", Consolas, monospace;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px rgba(59, 130, 246, 0.15);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --container-width: 1200px;
}

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

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

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

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

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

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  outline: none;
  border: none;
  background: none;
}

::selection {
  background: rgba(59, 130, 246, 0.3);
  color: #fff;
}

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

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

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

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 80px;
}

.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 16px;
  font-family: var(--font-mono);
}

.section-title {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.section-desc {
  font-size: 17px;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* --- Scroll Animations --- */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

.animate-in {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s ease forwards;
}

.animate-in:nth-child(1) { animation-delay: 0.1s; }
.animate-in:nth-child(2) { animation-delay: 0.2s; }
.animate-in:nth-child(3) { animation-delay: 0.35s; }
.animate-in:nth-child(4) { animation-delay: 0.5s; }
.animate-in:nth-child(5) { animation-delay: 0.65s; }

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===================================
   Navigation
   =================================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: all 0.4s ease;
}

.nav.scrolled {
  padding: 12px 0;
  background: rgba(11, 17, 32, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
}

.nav-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon svg {
  width: 36px;
  height: 36px;
}

.logo-text {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.logo-suffix {
  font-weight: 400;
  color: var(--color-text-secondary);
  margin-left: 2px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  position: relative;
  padding: 4px 0;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 1px;
  transition: width 0.3s ease;
}

.nav-link:hover {
  color: var(--color-text);
}

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

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

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: var(--transition);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 120px 0 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.hero-gradient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 40%, rgba(59, 130, 246, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 20%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse 50% 40% at 20% 80%, rgba(16, 185, 129, 0.06) 0%, transparent 50%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black, transparent);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black, transparent);
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  animation: float 20s ease-in-out infinite;
}

.hero-orb-1 {
  width: 600px;
  height: 600px;
  background: rgba(59, 130, 246, 0.08);
  top: -200px;
  right: -100px;
  animation-delay: 0s;
}

.hero-orb-2 {
  width: 400px;
  height: 400px;
  background: rgba(139, 92, 246, 0.06);
  bottom: -100px;
  left: -100px;
  animation-delay: -7s;
}

.hero-orb-3 {
  width: 300px;
  height: 300px;
  background: rgba(245, 158, 11, 0.04);
  top: 50%;
  left: 50%;
  animation-delay: -14s;
}

/* Hero background image */
.hero-bg-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
  z-index: 0;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(30px, -30px) scale(1.05); }
  50% { transform: translate(-20px, 20px) scale(0.95); }
  75% { transform: translate(20px, 10px) scale(1.02); }
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  border-radius: 50px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: 32px;
}

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

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

.hero-title {
  font-size: clamp(40px, 7vw, 72px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.hero-title-line {
  display: block;
}

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

.hero-subtitle {
  font-size: clamp(16px, 2vw, 18px);
  color: var(--color-text-secondary);
  max-width: 680px;
  margin: 0 auto 40px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 72px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
  box-shadow: 0 6px 30px rgba(59, 130, 246, 0.45);
  transform: translateY(-2px);
}

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

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-white {
  background: #fff;
  color: var(--color-bg);
  box-shadow: 0 4px 20px rgba(255, 255, 255, 0.15);
}

.btn-white:hover {
  box-shadow: 0 6px 30px rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.15);
}

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

/* Hero Stats */
.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
}

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

.hero-stat-number {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-unit {
  font-size: 20px;
}

.hero-stat-label {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: 4px;
}

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

/* Scroll Indicator */
.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
}

.scroll-indicator {
  width: 24px;
  height: 40px;
  border: 2px solid rgba(255, 255, 255, 0.15);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
}

.scroll-dot {
  width: 3px;
  height: 8px;
  background: rgba(255, 255, 255, 0.4);
  border-radius: 2px;
  animation: scrollDot 2s ease-in-out infinite;
}

@keyframes scrollDot {
  0%, 100% { opacity: 1; transform: translateY(0); }
  50% { opacity: 0.3; transform: translateY(12px); }
}

/* ===================================
   About Section
   =================================== */
.about {
  background: var(--color-bg-alt);
}

/* About image */
.about-image {
  width: 100%;
  max-width: 900px;
  margin: 0 auto 60px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
}

.about-image::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, var(--color-bg-alt) 100%);
  pointer-events: none;
}

.about-img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  object-position: center;
  display: block;
  margin: 0 auto;
  filter: brightness(0.8);
}

.about-values {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 80px;
}

.value-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}

.value-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.value-card:hover {
  transform: translateY(-4px);
  border-color: rgba(59, 130, 246, 0.2);
  box-shadow: var(--shadow-glow);
}

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

.value-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 20px;
}

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

.value-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}

.value-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* Numbers */
.about-numbers {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

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

.number-value {
  font-size: 48px;
  font-weight: 800;
  letter-spacing: -0.03em;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.number-label {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-top: 8px;
}

/* ===================================
   Product Section
   =================================== */
/* Product image */
.product-image {
  width: 100%;
  max-width: 900px;
  margin: 0 auto 60px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  position: relative;
}

.product-image::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.1));
  pointer-events: none;
}

.product-img {
  width: 100%;
  height: 360px;
  object-fit: cover;
  object-position: center;
  display: block;
  margin: 0 auto;
}

.product-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 80px;
}

.feature-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: all 0.4s ease;
  position: relative;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(59, 130, 246, 0.15);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.3);
}

.feature-icon-wrap {
  margin-bottom: 20px;
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(59, 130, 246, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.feature-icon svg {
  width: 24px;
  height: 24px;
}

.feature-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
}

.feature-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--color-primary);
  background: rgba(59, 130, 246, 0.1);
  padding: 4px 12px;
  border-radius: 50px;
}

/* Product Preview (Dashboard Mockup) */
.product-preview {
  perspective: 1200px;
}

.preview-window {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  transform: rotateX(2deg);
  transition: transform 0.5s ease;
}

.preview-window:hover {
  transform: rotateX(0deg);
}

.preview-titlebar {
  display: flex;
  align-items: center;
  padding: 12px 16px;
  background: rgba(0, 0, 0, 0.3);
  border-bottom: 1px solid var(--color-border);
}

.preview-dots {
  display: flex;
  gap: 8px;
  margin-right: 16px;
}

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

.dot-red { background: #EF4444; }
.dot-yellow { background: #F59E0B; }
.dot-green { background: #10B981; }

.preview-title {
  font-size: 13px;
  color: var(--color-text-muted);
  font-weight: 500;
}

.preview-body {
  display: flex;
  min-height: 360px;
}

.preview-sidebar {
  width: 180px;
  background: rgba(0, 0, 0, 0.2);
  padding: 16px 12px;
  border-right: 1px solid var(--color-border);
  flex-shrink: 0;
}

.sidebar-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--color-text-muted);
  cursor: default;
  margin-bottom: 4px;
}

.sidebar-item.active {
  background: rgba(59, 130, 246, 0.15);
  color: var(--color-primary);
}

.preview-main {
  flex: 1;
  padding: 20px;
  min-width: 0;
}

.preview-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}

.preview-card {
  padding: 16px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
}

.pc-label {
  font-size: 11px;
  color: var(--color-text-muted);
  margin-bottom: 6px;
}

.pc-value {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 4px;
}

.pc-change {
  font-size: 11px;
  color: var(--color-text-muted);
}

.pc-change.up {
  color: var(--color-success);
}

.pc-blue .pc-value { color: var(--color-primary); }
.pc-green .pc-value { color: var(--color-success); }
.pc-amber .pc-value { color: var(--color-accent); }
.pc-purple .pc-value { color: var(--color-secondary); }

/* Chart */
.preview-chart {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 16px;
}

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.chart-title {
  font-size: 13px;
  font-weight: 600;
}

.chart-legend {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 11px;
  color: var(--color-text-muted);
}

.legend-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  margin-right: 4px;
}

.legend-dot.blue { background: var(--color-primary); }
.legend-dot.gray { background: var(--color-surface-hover); }

.chart-bars {
  display: flex;
  align-items: flex-end;
  justify-content: space-around;
  height: 120px;
  gap: 8px;
}

.chart-bar-group {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  flex: 1;
  height: 100%;
  position: relative;
  padding-bottom: 20px;
}

.chart-bar-group span {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  font-size: 10px;
  color: var(--color-text-muted);
}

.chart-bar {
  flex: 1;
  border-radius: 3px 3px 0 0;
  min-height: 4px;
}

.chart-bar.fg {
  background: var(--color-primary);
}

.chart-bar.bg {
  background: var(--color-surface-hover);
}

/* ===================================
   Tech Section
   =================================== */
.tech {
  background: var(--color-bg-alt);
}

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

.tech-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: all 0.4s ease;
}

.tech-card:hover {
  border-color: rgba(59, 130, 246, 0.15);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

.tech-card-large {
  grid-column: span 3;
  display: flex;
  flex-direction: column;
  padding: 40px 36px;
}

.tech-card-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.tech-icon-circle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(59, 130, 246, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  flex-shrink: 0;
}

.tech-icon-circle svg {
  width: 22px;
  height: 22px;
}

.tech-card-header h3 {
  font-size: 18px;
  font-weight: 700;
}

.tech-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
}

.tech-tags span {
  font-size: 12px;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 50px;
  background: rgba(59, 130, 246, 0.08);
  color: var(--color-primary);
  border: 1px solid rgba(59, 130, 246, 0.15);
  font-family: var(--font-mono);
}

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

.testimonial-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: all 0.4s ease;
  position: relative;
}

.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.testimonial-quote {
  font-size: 56px;
  font-weight: 800;
  line-height: 1;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
  user-select: none;
}

.testimonial-text {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.9;
  margin-bottom: 24px;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
}

.author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}

.author-name {
  font-size: 14px;
  font-weight: 600;
}

.author-role {
  font-size: 12px;
  color: var(--color-text-muted);
}

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

.cta-bg {
  position: absolute;
  inset: 0;
}

.cta-bg-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.2;
  filter: brightness(0.6);
}

.cta-gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(11, 17, 32, 0.85), rgba(59, 130, 246, 0.3), rgba(139, 92, 246, 0.3));
}

.cta-content {
  position: relative;
  z-index: 1;
}

.cta-title {
  font-size: clamp(28px, 5vw, 44px);
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.cta-desc {
  font-size: 17px;
  color: var(--color-text-secondary);
  margin-bottom: 40px;
}

.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

/* ===================================
   Contact Section
   =================================== */
.contact {
  background: var(--color-bg-alt);
}

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

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
}

.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(59, 130, 246, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--color-primary);
}

.contact-icon svg {
  width: 20px;
  height: 20px;
}

.contact-label {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.contact-value {
  font-size: 15px;
  font-weight: 600;
}

/* Contact Form */
.contact-form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px;
}

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

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

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.form-input {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-size: 14px;
  transition: var(--transition);
}

.form-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

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

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

select.form-input {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M3 5l3 3 3-3' stroke='%236B7280' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  cursor: pointer;
}

select.form-input option {
  background: var(--color-surface);
  color: var(--color-text);
}

/* ===================================
   Footer
   =================================== */
.footer {
  padding: 60px 0 40px;
  border-top: 1px solid var(--color-border);
}

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

.footer-brand .nav-logo {
  margin-bottom: 16px;
}

.footer-desc {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.8;
  max-width: 280px;
}

.footer-links-group h4 {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--color-text);
}

.footer-links-group a {
  display: block;
  font-size: 13px;
  color: var(--color-text-muted);
  padding: 6px 0;
}

.footer-links-group a:hover {
  color: var(--color-text);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  font-size: 13px;
  color: var(--color-text-muted);
}

.footer-icp {
  font-size: 12px;
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 1024px) {
  .tech-card-large {
    grid-column: span 3;
  }

  .tech-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .tech-card-large {
    grid-column: span 2;
  }

  .preview-cards {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 768px) {
  .section {
    padding: 80px 0;
  }

  .section-header {
    margin-bottom: 48px;
  }

  /* Nav mobile */
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--color-bg-alt);
    flex-direction: column;
    padding: 80px 32px 32px;
    gap: 0;
    transition: right 0.3s ease;
    border-left: 1px solid var(--color-border);
    z-index: 999;
  }

  .nav-links.open {
    right: 0;
  }

  .nav-link {
    display: block;
    padding: 16px 0;
    font-size: 16px;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-toggle {
    display: flex;
    z-index: 1001;
  }

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

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

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

  /* Grids */
  .about-values,
  .product-features,
  .testimonials {
    grid-template-columns: 1fr;
  }

  .about-numbers {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }

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

  .tech-card-large {
    grid-column: span 1;
  }

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

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

  /* Hero */
  .hero-stats {
    flex-direction: column;
    gap: 24px;
  }

  .hero-stat-divider {
    width: 40px;
    height: 1px;
  }

  .hero-actions {
    flex-direction: column;
  }

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

  /* Preview */
  .preview-sidebar {
    display: none;
  }

  .preview-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .pc-value {
    font-size: 16px;
  }

  .cta-actions {
    flex-direction: column;
  }

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

  /* Footer */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 100px 0 60px;
  }

  .number-value {
    font-size: 36px;
  }

  .preview-cards {
    grid-template-columns: 1fr;
  }

  .chart-bars {
    height: 80px;
  }
}