:root {
  --bg-main: #050907;
  --bg-secondary: #08100C;
  --bg-card: #0A140F;
  --bg-card-hover: #0F1F17;
  --accent: #00E676;
  --accent-dark: #00B85C;
  --accent-soft: rgba(0, 230, 118, 0.14);
  --accent-border: rgba(0, 230, 118, 0.28);
  --gold: #F59E0B;
  --gold-soft: rgba(245, 158, 11, 0.15);
  --text-main: #F8FAFC;
  --text-muted: #94A3B8;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --max-width: 1200px;
  --radius-lg: 14px;
  --radius-md: 10px;
  --shadow-glow: 0 10px 30px rgba(0, 230, 118, 0.15);
}

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

html {
  scroll-behavior: smooth;
  font-family: 'Prompt', 'Kanit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.7;
}

body {
  background-color: var(--bg-main);
  background-image:
    radial-gradient(circle at 15% 10%, rgba(0, 230, 118, 0.08) 0%, transparent 35%),
    radial-gradient(circle at 85% 20%, rgba(245, 158, 11, 0.05) 0%, transparent 30%);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease, opacity 0.2s ease;
}

a:hover {
  color: #5EFC9A;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
  width: 100%;
}

/* Sticky Navbar */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(5, 9, 7, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--accent-border);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 0.5rem 0;
}

.brand-logo {
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  text-decoration: none;
}

.brand-logo .brand-pg {
  color: var(--accent);
  text-shadow: 0 0 14px rgba(0, 230, 118, 0.45);
}

.brand-logo .brand-168 {
  color: #FFFFFF;
}

.brand-logo .brand-badge {
  font-size: 0.7rem;
  background: var(--gold-soft);
  color: var(--gold);
  border: 1px solid rgba(245, 158, 11, 0.4);
  padding: 0.1rem 0.45rem;
  border-radius: 999px;
  font-weight: 700;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.15rem;
  list-style: none;
  flex-wrap: wrap;
}

.nav-links a {
  color: var(--text-main);
  font-size: 0.94rem;
  font-weight: 500;
  padding: 0.35rem 0.6rem;
  border-radius: 6px;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
  background: var(--accent-soft);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 1.2rem;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.92rem;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, #00E676 0%, #00B85C 100%);
  color: #04120B;
  box-shadow: 0 4px 16px rgba(0, 230, 118, 0.35);
  border: 1px solid #33EB91;
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 22px rgba(0, 230, 118, 0.55);
  color: #020A06;
}

.btn-outline {
  background: rgba(0, 230, 118, 0.08);
  color: var(--accent);
  border: 1px solid var(--accent-border);
}

.btn-outline:hover {
  background: rgba(0, 230, 118, 0.18);
  color: #FFFFFF;
}

/* Breadcrumb Navigation */
.breadcrumb-bar {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.65rem 0;
  font-size: 0.88rem;
}

.breadcrumb-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  color: var(--text-muted);
}

.breadcrumb-list li + li::before {
  content: "/";
  margin-right: 0.5rem;
  color: var(--text-muted);
}

/* Main Content Layout */
main {
  flex: 1;
  padding: 2.25rem 0 3.5rem;
}

.hero-section {
  background: linear-gradient(160deg, rgba(10, 20, 15, 0.95) 0%, rgba(5, 9, 7, 0.98) 100%);
  border: 1px solid var(--accent-border);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  margin-bottom: 2.5rem;
  box-shadow: var(--shadow-glow);
}

.hero-badge {
  display: inline-block;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid var(--accent-border);
  padding: 0.25rem 0.85rem;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 700;
  margin-bottom: 0.9rem;
}

h1 {
  font-size: clamp(1.75rem, 3.2vw, 2.5rem);
  line-height: 1.28;
  color: #FFFFFF;
  margin-bottom: 1rem;
  font-weight: 800;
}

h2 {
  font-size: clamp(1.35rem, 2.4vw, 1.75rem);
  color: var(--accent);
  margin: 2.25rem 0 0.85rem;
  padding-bottom: 0.45rem;
  border-bottom: 1px solid var(--accent-border);
  font-weight: 700;
}

h3 {
  font-size: 1.2rem;
  color: #FFFFFF;
  margin: 1.35rem 0 0.55rem;
  font-weight: 600;
}

p {
  margin-bottom: 1.05rem;
  color: #E2E8F0;
}

.direct-answer {
  background: rgba(0, 230, 118, 0.06);
  border-left: 4px solid var(--accent);
  padding: 1rem 1.25rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin-bottom: 1.35rem;
  color: #F1F5F9;
  font-weight: 500;
}

/* Visual Protocol: Zero CLS Media Frame (02-visual-protocol.md) */
.media-frame {
  margin: 1.75rem auto;
  max-width: 800px;
  width: 100%;
  border-radius: 14px;
  overflow: hidden;
  background: rgba(10, 20, 15, 0.75);
  border: 1px solid rgba(0, 230, 118, 0.28);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
  text-align: center;
}

.content-media-img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
}

.media-frame figcaption {
  padding: 0.75rem 1rem;
  font-size: 0.85rem;
  color: #94A3B8;
  background: rgba(5, 9, 7, 0.9);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

/* Grid & Cards */
.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.25rem;
  margin: 1.5rem 0;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.35rem;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

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

.card-tag {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--gold);
  background: var(--gold-soft);
  padding: 0.15rem 0.55rem;
  border-radius: 4px;
  margin-bottom: 0.5rem;
  font-weight: 700;
}

/* Stats Strip */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.stat-box {
  background: rgba(0, 230, 118, 0.05);
  border: 1px solid var(--accent-border);
  border-radius: var(--radius-md);
  padding: 1rem;
  text-align: center;
}

.stat-value {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--accent);
  display: block;
}

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

/* Data Tables */
.table-wrap {
  overflow-x: auto;
  margin: 1.5rem 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--accent-border);
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
  font-size: 0.94rem;
}

th, td {
  padding: 0.85rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
}

th {
  background: rgba(0, 230, 118, 0.12);
  color: var(--accent);
  font-weight: 700;
}

tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* Lists */
ul.feature-list, ol.step-list {
  margin: 1rem 0 1.4rem 1.4rem;
  color: #E2E8F0;
}

ul.feature-list li, ol.step-list li {
  margin-bottom: 0.55rem;
}

/* FAQ Section */
.faq-section {
  margin-top: 2.5rem;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.15rem 1.35rem;
  margin-bottom: 0.9rem;
}

.faq-item h3 {
  margin-top: 0;
  color: var(--accent);
  font-size: 1.08rem;
}

/* CTA Banner */
.cta-box {
  background: linear-gradient(135deg, rgba(0, 230, 118, 0.14) 0%, rgba(10, 20, 15, 0.95) 100%);
  border: 1px solid var(--accent);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
  margin: 2.5rem 0 1rem;
}

/* Footer */
.site-footer {
  background: #030604;
  border-top: 1px solid var(--accent-border);
  padding: 3rem 0 2rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-col h4 {
  color: #FFFFFF;
  margin-bottom: 0.85rem;
  font-size: 1rem;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 0.45rem;
}

.footer-col ul a {
  color: var(--text-muted);
}

.footer-col ul a:hover {
  color: var(--accent);
}

.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: 1.25rem;
  text-align: center;
  font-size: 0.82rem;
}

@media (max-width: 768px) {
  .hero-section {
    padding: 1.4rem;
  }
  .navbar {
    justify-content: center;
  }
}