:root {
    --bg-color: #0f0f12;
    --surface-color: #1a1a20;
    --surface-hover: #26262e;
    --primary-color: #e63946;
    --primary-hover: #d62828;
    --text-main: #f1f1f3;
    --text-muted: #9a9aa5;
    --border-color: #2e2e38;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  }

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

  body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
  }

  a {
    text-decoration: none;
    color: inherit;
  }

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

  /* Typography */
  h1, h2, h3 {
    font-weight: 700;
    line-height: 1.3;
  }

  h1 {
    font-size: 2rem;
    margin-bottom: 1rem;
  }

  h2 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    text-align: center;
  }

  h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
  }

  p {
    color: var(--text-muted);
    margin-bottom: 1rem;
  }

  .container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
  }

  .section-padding {
    padding: 60px 0;
  }

  /* Header */
  .site-header {
    padding: 16px 0;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    background-color: rgba(15, 15, 18, 0.9);
    backdrop-filter: blur(8px);
    z-index: 100;
  }

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

  .brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: bold;
  }

  .brand img {
    height: 32px;
    width: auto;
  }

  .btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: #fff;
    padding: 10px 24px;
    border-radius: 24px;
    font-weight: 600;
    transition: background-color 0.2s ease, transform 0.2s ease;
  }

  .btn:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
  }

  .btn-large {
    padding: 14px 32px;
    font-size: 1.1rem;
  }

  /* Hero Section */
  .hero {
    padding: 60px 0;
    background: linear-gradient(180deg, #1a1a20 0%, #0f0f12 100%);
  }

  .hero-inner {
    display: flex;
    flex-direction: column;
    gap: 40px;
  }

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

  .hero-content p {
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 24px auto;
  }

  .hero-carousel {
    position: relative;
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    aspect-ratio: 3/4;
  }

  @media (min-width: 768px) {
    .hero-carousel {
      aspect-ratio: 16/9;
    }
    h1 { font-size: 2.75rem; }
    h2 { font-size: 2rem; }
  }

  .carousel-track {
    display: flex;
    transition: transform 0.4s ease-in-out;
    height: 100%;
  }

  .carousel-slide {
    min-width: 100%;
    height: 100%;
  }

  .carousel-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
  }

  .carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0,0,0,0.5);
    color: white;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
  }

  .carousel-btn:hover {
    background: rgba(230, 57, 70, 0.8);
  }

  .carousel-btn.prev { left: 10px; }
  .carousel-btn.next { right: 10px; }

  .carousel-dots {
    position: absolute;
    bottom: 15px;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: center;
    gap: 8px;
  }

  .carousel-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255,255,255,0.4);
    cursor: pointer;
    transition: background 0.3s;
  }

  .carousel-dot.active {
    background: var(--primary-color);
    transform: scale(1.2);
  }

  /* Features */
  .features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    margin-top: 40px;
  }

  @media (min-width: 768px) {
    .features-grid { grid-template-columns: repeat(3, 1fr); }
  }

  .feature-card {
    background: var(--surface-color);
    padding: 30px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease;
  }

  .feature-card:hover {
    transform: translateY(-5px);
  }

  .feature-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 16px;
    font-weight: bold;
  }

  /* Gallery */
  .gallery-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 40px;
  }

  @media (min-width: 768px) {
    .gallery-grid { grid-template-columns: repeat(4, 1fr); }
  }

  .gallery-item {
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    aspect-ratio: 3/4;
    background: var(--surface-color);
  }

  .gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
  }

  .gallery-item:hover img {
    transform: scale(1.05);
  }

  /* Guide Section */
  .guide-section {
    background: var(--surface-color);
  }

  .guide-steps {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-top: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
  }

  .step-item {
    display: flex;
    gap: 20px;
    background: var(--bg-color);
    padding: 24px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
  }

  .step-num {
    background: var(--primary-color);
    color: white;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.2rem;
    flex-shrink: 0;
  }

  /* Split Section */
  .split-inner {
    display: flex;
    flex-direction: column;
    gap: 40px;
    align-items: center;
  }

  @media (min-width: 768px) {
    .split-inner {
      flex-direction: row;
      justify-content: space-between;
    }
    .split-text, .split-image {
      flex: 1;
    }
    .split-image img {
      border-radius: 16px;
      box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    }
  }

  /* FAQ */
  .faq-list {
    max-width: 800px;
    margin: 40px auto 0;
  }

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

  .faq-item summary {
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .faq-item summary::-webkit-details-marker {
    display: none;
  }

  .faq-item summary::after {
    content: "+";
    color: var(--primary-color);
    font-size: 1.5rem;
  }

  .faq-item[open] summary::after {
    content: "-";
  }

  .faq-content {
    padding-top: 16px;
    color: var(--text-muted);
  }

  /* CTA Section */
  .cta-section {
    text-align: center;
    background: linear-gradient(135deg, #1a1a20 0%, #26262e 100%);
    border-radius: 24px;
    padding: 60px 20px;
    margin: 40px 20px;
  }

  @media (min-width: 768px) {
    .cta-section {
      max-width: 1000px;
      margin: 60px auto;
    }
  }

  /* Footer */
  .site-footer {
    border-top: 1px solid var(--border-color);
    padding: 40px 0 20px;
    margin-top: 40px;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
  }

  .site-footer p {
    margin-bottom: 8px;
    color: var(--text-muted);
  }

  .site-footer a {
    color: var(--text-muted);
    transition: color 0.2s;
  }

  .site-footer a:hover {
    color: var(--text-main);
  }