:root {
  --bg: #0b0d10;
  --panel: #11151b;
  --line: rgba(255, 255, 255, 0.10);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.62);
  --accent: #4da3ff;
  --radius: 14px;
  --max: 980px;
  --font-base: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

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

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  text-decoration: none;
  color: inherit;
  transition: opacity 0.2s ease;
}

a:hover {
  opacity: 0.8;
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  display: block;
  border-radius: var(--radius);
}

/* Layout utilities */
.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 20px;
  width: 100%;
}

.section {
  padding: 80px 0;
  border-bottom: 1px solid var(--line);
}

.section:last-child {
  border-bottom: none;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 40px;
  letter-spacing: 0.05em;
  text-align: center;
}

.section-title span {
  color: var(--accent);
}

/* Header */
.header {
  height: 70px;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background-color: rgba(11, 13, 16, 0.9);
  backdrop-filter: blur(10px);
  z-index: 100;
  display: flex;
  align-items: center;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav {
  display: flex;
  gap: 20px;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.05em;
  padding: 5px 0;
  position: relative;
}

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--accent);
}

.btn-cta {
  background-color: var(--accent);
  color: #fff;
  padding: 10px 24px;
  border-radius: 99px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: transform 0.2s, box-shadow 0.2s;
  display: inline-block;
}

.btn-cta:hover {
  opacity: 1;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(77, 163, 255, 0.3);
}

/* Mobile Menu (Simple overlay based implementation is kept simple for CSS only usually, 
   but for this template we'll keep nav simple flex for responsive or add simpler stacked nav) 
   For simplicity and "minimal JS", we will use scrollable horizontal nav for mobile or simple wrapping.
*/
@media (max-width: 768px) {
  .header {
    height: auto;
    padding: 10px 0;
  }
  .header-inner {
    flex-direction: column;
    gap: 15px;
  }
  .nav {
    gap: 15px;
    flex-wrap: wrap;
    justify-content: center;
  }
}

/* Hero */
.hero {
  padding: 100px 0 80px;
  text-align: center;
}

.hero-name {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 10px;
  letter-spacing: 0.1em;
}

.hero-title {
  color: var(--accent);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.hero-text {
  color: var(--muted);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.8;
}

/* Cards (Pick Up, Works, etc) */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.card {
  background-color: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 25px;
  transition: transform 0.2s;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.2);
}

.card-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.card-meta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 15px;
}

.tag {
  font-size: 0.8rem;
  padding: 4px 10px;
  background-color: rgba(255, 255, 255, 0.05);
  border-radius: 4px;
  color: var(--muted);
}

.card-desc {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 20px;
  line-height: 1.6;
}

/* Audio Player styling */
audio {
  width: 100%;
  height: 40px;
  border-radius: 99px;
  outline: none;
}
/* Note: Standard audio player styling is limited across browsers. 
   Custom styling requires JS. We rely on standard as per requirements. 
   We just make it fit width. */

/* Strength */
.strength-item {
  text-align: center;
  padding: 20px;
}

.strength-icon {
  font-size: 2rem;
  margin-bottom: 15px;
  color: var(--accent);
}

.strength-title {
  font-size: 1.2rem;
  margin-bottom: 10px;
  font-weight: 700;
}

.strength-text {
  color: var(--muted);
  font-size: 0.95rem;
}

/* Process Grid */
.process-grid {
  display: grid;
  gap: 20px;
}

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

.process-item {
  position: relative;
  background: var(--panel);
  padding: 30px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.process-step {
  font-size: 3rem;
  font-weight: 900;
  color: rgba(255, 255, 255, 0.03);
  position: absolute;
  top: 10px;
  right: 20px;
  line-height: 1;
}

.process-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
  position: relative;
}

/* Pricing */
.pricing-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--panel);
  border-radius: var(--radius);
  overflow: hidden;
}

.pricing-table th, .pricing-table td {
  padding: 20px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}

.pricing-table th {
  background-color: rgba(255, 255, 255, 0.02);
  color: var(--muted);
  font-weight: 500;
  width: 30%;
}

.pricing-price {
  font-weight: 700;
  color: var(--accent);
}

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

.faq-question {
  width: 100%;
  text-align: left;
  padding: 20px 0;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-question::after {
  content: '+';
  font-size: 1.2rem;
  color: var(--accent);
  transition: transform 0.3s;
}

.faq-item.active .faq-question::after {
  transform: rotate(45deg);
}

.faq-answer {
  height: 0;
  overflow: hidden;
  transition: height 0.3s ease;
  color: var(--muted);
  line-height: 1.6;
}

.faq-answer p {
  padding-bottom: 20px;
}

/* Forms (Request) */
.btn-primary {
  display: inline-block;
  background-color: var(--accent);
  color: #fff;
  padding: 14px 40px;
  border-radius: 6px;
  font-weight: 600;
  text-align: center;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  width: 100%;
}

.btn-outline {
  display: inline-block;
  background-color: transparent;
  color: var(--text);
  padding: 14px 40px;
  border-radius: 6px;
  font-weight: 600;
  text-align: center;
  border: 1px solid var(--line);
  cursor: pointer;
  font-size: 1rem;
  width: 100%;
}

.btn-outline:hover {
  border-color: var(--text);
}

/* Footer */
.footer {
  margin-top: auto;
  padding: 60px 0 30px;
  border-top: 1px solid var(--line);
  text-align: center;
}

.footer-sns {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 30px;
}

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

/* Utils */
.text-center { text-align: center; }
.mb-40 { margin-bottom: 40px; }
.mt-40 { margin-top: 40px; }

/* Responsive adjustments */
@media (max-width: 600px) {
  .section-title {
    font-size: 1.6rem;
  }
  .hero-name {
    font-size: 2rem;
  }
  .pricing-table th, .pricing-table td {
    display: block;
    width: 100%;
  }
  .pricing-table th {
    padding-bottom: 5px;
    border-bottom: none;
  }
  .pricing-table td {
    padding-top: 0;
  }
}