:root {
  /* Daytime / Light Clean Aesthetic Theme */
  --bg-primary: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: rgba(255, 255, 255, 0.98);
  --border-color: rgba(226, 232, 240, 0.8);
  --border-highlight: rgba(14, 165, 233, 0.35);
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-dim: #94a3b8;
  --primary: #0284c7;
  --primary-glow: rgba(2, 132, 199, 0.18);
  --accent: #6366f1;
  --accent-purple: #9333ea;
  --success: #059669;
  --warning: #d97706;
  --radius-xl: 24px;
  --radius-lg: 16px;
  --radius-md: 12px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-serif: 'Noto Serif SC', serif;
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-main);
  overflow-x: hidden;
}

body {
  position: relative;
  min-height: 100vh;
  line-height: 1.6;
}

/* Daytime Ambient Pastel Gradients */
.bg-mesh {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.55;
  animation: floatOrb 18s ease-in-out infinite alternate;
}

.orb-1 {
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, #bae6fd 0%, rgba(186, 230, 253, 0) 70%);
  top: -150px;
  right: -80px;
}

.orb-2 {
  width: 650px;
  height: 650px;
  background: radial-gradient(circle, #e0e7ff 0%, rgba(224, 231, 255, 0) 70%);
  bottom: 5%;
  left: -180px;
  animation-duration: 22s;
  animation-delay: -4s;
}

.orb-3 {
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, #f3e8ff 0%, rgba(243, 232, 255, 0) 70%);
  top: 40%;
  right: 10%;
  animation-duration: 20s;
  animation-delay: -8s;
}

@keyframes floatOrb {
  0% { transform: translateY(0) scale(1); }
  50% { transform: translateY(50px) scale(1.06); }
  100% { transform: translateY(-30px) scale(0.96); }
}

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

/* Header & Nav */
.header-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.03);
  transition: all 0.3s ease;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-main);
}

.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, #0ea5e9, #6366f1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: #fff;
  box-shadow: 0 4px 14px rgba(14, 165, 233, 0.25);
}

.brand-name {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.brand-name span {
  color: var(--primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  transition: color 0.2s ease;
}

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

.nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 9999px;
  background: #f0f9ff;
  border: 1px solid rgba(2, 132, 199, 0.2);
  color: var(--primary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.2s ease;
}

.nav-btn:hover {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 16px rgba(2, 132, 199, 0.25);
  transform: translateY(-1px);
}

/* Hero Section */
.hero {
  padding: 150px 0 90px;
  text-align: center;
  position: relative;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 9999px;
  background: #e0f2fe;
  border: 1px solid rgba(2, 132, 199, 0.2);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(38px, 6vw, 64px);
  font-weight: 800;
  letter-spacing: -1.5px;
  line-height: 1.2;
  margin-bottom: 24px;
  color: var(--text-main);
}

.gradient-text {
  background: linear-gradient(135deg, #0284c7 0%, #4f46e5 50%, #9333ea 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(16px, 2.5vw, 19px);
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 40px;
  font-weight: 400;
  line-height: 1.7;
}

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

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 12px;
  background: linear-gradient(135deg, #0284c7, #4f46e5);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  font-size: 16px;
  box-shadow: 0 10px 22px -3px rgba(2, 132, 199, 0.3);
  transition: all 0.25s ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 28px -3px rgba(2, 132, 199, 0.42);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 12px;
  background: #ffffff;
  border: 1px solid var(--border-color);
  color: var(--text-main);
  text-decoration: none;
  font-weight: 600;
  font-size: 16px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
  transition: all 0.25s ease;
}

.btn-secondary:hover {
  background: #f8fafc;
  border-color: #cbd5e1;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.08);
}

/* Status Pill Bar */
.status-pill-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-top: 48px;
  flex-wrap: wrap;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.8);
  padding: 6px 14px;
  border-radius: 9999px;
  border: 1px solid var(--border-color);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.02);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--success);
  box-shadow: 0 0 8px rgba(5, 150, 105, 0.5);
}

/* Section Common */
.section {
  padding: 80px 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-tag {
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 12px;
  display: block;
}

.section-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 16px;
  color: var(--text-main);
}

.section-desc {
  color: var(--text-muted);
  font-size: 17px;
  max-width: 600px;
  margin: 0 auto;
}

/* Bento Grid */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}

.bento-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 34px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 4px 20px -4px rgba(15, 23, 42, 0.05);
}

.bento-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-highlight);
  background: var(--bg-card-hover);
  box-shadow: 0 16px 32px -8px rgba(15, 23, 42, 0.1);
}

.card-todo { grid-column: span 7; }
.card-blog { grid-column: span 5; }
.card-api  { grid-column: span 4; }
.card-bot  { grid-column: span 4; }
.card-life { grid-column: span 4; }

.card-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 9999px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 18px;
  align-self: flex-start;
}

.badge-cyan {
  background: #e0f2fe;
  color: #0284c7;
  border: 1px solid rgba(2, 132, 199, 0.2);
}

.badge-purple {
  background: #f3e8ff;
  color: #9333ea;
  border: 1px solid rgba(147, 51, 234, 0.2);
}

.badge-green {
  background: #d1fae5;
  color: #059669;
  border: 1px solid rgba(5, 150, 105, 0.2);
}

.card-title {
  font-size: 23px;
  font-weight: 700;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-main);
}

.card-title i {
  color: var(--primary);
}

.card-desc {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 24px;
  flex-grow: 1;
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 26px;
}

.feature-tag {
  font-size: 13px;
  padding: 5px 12px;
  background: #f1f5f9;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: #334155;
}

.card-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.btn-card {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
}

.btn-card-primary {
  background: var(--primary);
  color: #ffffff;
}

.btn-card-primary:hover {
  background: #0369a1;
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.25);
}

.btn-card-outline {
  background: #ffffff;
  border: 1px solid var(--border-color);
  color: var(--text-main);
}

.btn-card-outline:hover {
  background: #f8fafc;
  border-color: #94a3b8;
}

/* Showcase Section */
.showcase-wrapper {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 52px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 10px 30px -5px rgba(15, 23, 42, 0.05);
}

.showcase-content h3 {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 18px;
  color: var(--text-main);
}

.showcase-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-bottom: 32px;
}

.showcase-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.feature-icon {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: #e0f2fe;
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  flex-shrink: 0;
  margin-top: 2px;
}

.feature-text h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 4px;
}

.feature-text p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Client Info & Spec Card */
.client-info-card {
  background: #f8fafc;
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
  box-shadow: 0 8px 24px -4px rgba(15, 23, 42, 0.06);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.client-app-avatar {
  width: 76px;
  height: 76px;
  border-radius: 18px;
  background: #ffffff;
  border: 1px solid var(--border-color);
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  overflow: hidden;
}

.client-app-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.client-app-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}

.client-version-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #e0f2fe;
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 9999px;
  margin-bottom: 20px;
}

.client-specs-grid {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 20px;
  text-align: left;
}

.client-spec-item {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.client-spec-label {
  font-size: 11px;
  color: var(--text-dim);
}

.client-spec-val {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
}

.compliance-box {
  width: 100%;
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  text-align: left;
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.compliance-box i {
  color: var(--accent);
  font-size: 16px;
  margin-top: 2px;
  flex-shrink: 0;
}

.compliance-box-text {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.6;
}

.compliance-box-text strong {
  color: var(--text-main);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border-color);
  background: #ffffff;
  padding: 44px 0 32px;
  margin-top: 60px;
}

.footer-beian {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 16px;
  font-size: 13px;
}

.beian-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #64748b;
  text-decoration: none;
  font-size: 13px;
  transition: color 0.2s ease;
}

.beian-link:hover {
  color: var(--primary);
}

.beian-icon {
  width: 16px;
  height: 16px;
  vertical-align: middle;
}

.footer-copy {
  text-align: center;
  color: var(--text-dim);
  font-size: 13px;
}

/* Responsive */
@media (max-width: 992px) {
  .bento-grid {
    grid-template-columns: 1fr;
  }
  .card-todo, .card-blog, .card-api, .card-bot, .card-life {
    grid-column: span 1;
  }
  .showcase-wrapper {
    grid-template-columns: 1fr;
    padding: 36px 24px;
  }
  .nav-links {
    display: none;
  }
}