:root {
  --bg-primary: #0a0a0c;
  --bg-secondary: #141418;
  --bg-card: rgba(26, 26, 32, 0.75);
  --bg-card-hover: rgba(36, 36, 46, 0.85);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-color-hover: rgba(255, 255, 255, 0.16);
  --text-primary: #ffffff;
  --text-secondary: #9a9aa8;
  --text-tertiary: #6b6b7a;
  --accent-blue: #0a84ff;
  --accent-blue-glow: rgba(10, 132, 255, 0.35);
  --accent-cyan: #64d2ff;
  --accent-purple: #bf5af2;
  --accent-green: #30d158;
  --accent-orange: #ff9f0a;
  --accent-red: #ff453a;
  --gradient-accent: linear-gradient(135deg, #0a84ff 0%, #bf5af2 100%);
  --gradient-card: linear-gradient(180deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0.01) 100%);
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --max-width: 1140px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg-primary: #f5f5f7;
    --bg-secondary: #ffffff;
    --bg-card: rgba(255, 255, 255, 0.85);
    --bg-card-hover: #ffffff;
    --border-color: rgba(0, 0, 0, 0.08);
    --border-color-hover: rgba(0, 0, 0, 0.15);
    --text-primary: #1d1d1f;
    --text-secondary: #6e6e73;
    --text-tertiary: #86868b;
    --accent-blue: #0071e3;
    --accent-blue-glow: rgba(0, 113, 227, 0.25);
    --accent-cyan: #007799;
    --accent-purple: #9b51e0;
    --accent-green: #248a3d;
    --accent-orange: #c95100;
    --accent-red: #d70015;
    --gradient-card: linear-gradient(180deg, rgba(255, 255, 255, 0.9) 0%, rgba(245, 245, 247, 0.7) 100%);
  }
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

/* Navigation */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background-color: rgba(10, 10, 12, 0.8);
  border-bottom: 1px solid var(--border-color);
  transition: all 0.2s ease;
}

@media (prefers-color-scheme: light) {
  .navbar {
    background-color: rgba(245, 245, 247, 0.8);
  }
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.nav-logo-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

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

.nav-cta {
  background: var(--accent-blue);
  color: #ffffff;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 3px solid var(--accent-blue);
  outline-offset: 2px;
}

/* Hero Section */
.hero {
  padding: 80px 0 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 20px;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-cyan);
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 20px;
  background: linear-gradient(180deg, var(--text-primary) 0%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto 36px;
  line-height: 1.5;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s ease;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent-blue);
  color: #fff;
  box-shadow: 0 4px 18px var(--accent-blue-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px var(--accent-blue-glow);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-color-hover);
  transform: translateY(-2px);
}

/* Feature Grid */
.section {
  padding: 70px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 50px;
}

.section-tag {
  color: var(--accent-blue);
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 24px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

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

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 20px;
}

.icon-blue { background: rgba(10, 132, 255, 0.15); color: var(--accent-blue); }
.icon-purple { background: rgba(191, 90, 242, 0.15); color: var(--accent-purple); }
.icon-green { background: rgba(48, 209, 88, 0.15); color: var(--accent-green); }
.icon-orange { background: rgba(255, 159, 10, 0.15); color: var(--accent-orange); }
.icon-cyan { background: rgba(100, 210, 255, 0.15); color: var(--accent-cyan); }
.icon-red { background: rgba(255, 69, 58, 0.15); color: var(--accent-red); }

.card-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.card-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.card-list {
  list-style: none;
  margin-top: 16px;
}

.card-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.card-list li::before {
  content: "✓";
  color: var(--accent-green);
  font-weight: bold;
}

/* Tables */
.table-container {
  overflow-x: auto;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  margin-top: 24px;
  -webkit-overflow-scrolling: touch;
}

table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
  text-align: left;
}

th, td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
}

th {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-tertiary);
  background: rgba(255, 255, 255, 0.02);
}

td {
  font-size: 0.95rem;
}

tr:last-child td {
  border-bottom: none;
}

.status-badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 700;
}

.badge-success { background: rgba(48, 209, 88, 0.15); color: var(--accent-green); }
.badge-info { background: rgba(10, 132, 255, 0.15); color: var(--accent-blue); }
.badge-warning { background: rgba(255, 159, 10, 0.15); color: var(--accent-orange); }

/* Policy / Document Content */
.doc-content {
  max-width: 800px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 48px;
}

.doc-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 36px 0 14px;
  letter-spacing: -0.01em;
}

.doc-content h2:first-child {
  margin-top: 0;
}

.doc-content p {
  color: var(--text-secondary);
  margin-bottom: 18px;
  font-size: 1rem;
}

.doc-content ul {
  margin-bottom: 24px;
  padding-left: 24px;
  color: var(--text-secondary);
}

.doc-content li {
  margin-bottom: 8px;
}

.highlight-box {
  background: rgba(10, 132, 255, 0.08);
  border: 1px solid rgba(10, 132, 255, 0.2);
  border-radius: var(--radius-md);
  padding: 20px;
  margin: 24px 0;
}

/* FAQ Accordion */
.faq-item {
  border-bottom: 1px solid var(--border-color);
  padding: 20px 0;
}

.faq-question {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.faq-answer {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Footer */
footer {
  border-top: 1px solid var(--border-color);
  padding: 50px 0 30px;
  background: var(--bg-secondary);
  color: var(--text-tertiary);
  font-size: 0.9rem;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 30px;
}

.footer-links {
  display: flex;
  gap: 20px;
  list-style: none;
}

.footer-link {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}

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

.footer-bottom {
  text-align: center;
  font-size: 0.8rem;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
}

.hero-subtitle,
.card-desc,
.card-list li,
.faq-question,
.faq-answer,
.doc-content p,
.doc-content li,
td,
.footer-brand {
  overflow-wrap: anywhere;
}

.doc-content code {
  word-break: break-word;
}

@media (max-width: 900px) {
  .grid-2 {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 760px) {
  .container {
    padding: 0 16px;
  }

  .nav-container {
    height: auto;
    min-height: 64px;
    flex-wrap: wrap;
    gap: 10px;
    padding: 10px 0;
  }

  .nav-links {
    width: 100%;
    flex-wrap: wrap;
    gap: 8px 10px;
  }

  .nav-link,
  .nav-cta,
  .footer-link {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
  }

  .hero {
    padding: 56px 0 44px;
  }

  .hero-badge {
    margin-bottom: 16px;
  }

  .hero-title br {
    display: none;
  }

  .hero-actions {
    gap: 10px;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
    min-height: 44px;
  }

  .section {
    padding: 54px 0;
  }

  .section-header {
    margin-bottom: 32px;
  }

  .section-title {
    font-size: 1.8rem;
  }

  .section-subtitle {
    font-size: 1rem;
  }

  .grid-3,
  .grid-2 {
    grid-template-columns: minmax(0, 1fr);
  }

  .card {
    padding: 24px 18px;
  }

  .doc-content {
    border-radius: var(--radius-lg);
    padding: 28px 18px;
  }

  .doc-content h2 {
    font-size: 1.25rem;
    margin: 28px 0 12px;
  }

  .faq-question {
    font-size: 1.05rem;
  }

  .footer-links {
    gap: 8px 14px;
    flex-wrap: wrap;
  }
}