:root {
    --bg-color: #fbf7f5;
    --text-main: #2c1e1c;
    --text-muted: #745c58;
    --primary: #c8392b;
    --primary-hover: #a82e22;
    --card-bg: #ffffff;
    --border: #eedede;
    --radius: 16px;
    --shadow: 0 4px 20px rgba(44, 30, 28, 0.05);
  }

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

  body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
  }

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

  a {
    text-decoration: none;
    color: var(--primary);
  }

  .container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
  }

  /* Header */
  .site-header {
    padding: 20px 0;
    background: rgba(251, 247, 245, 0.9);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--border);
  }

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

  .brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-main);
  }

  .brand img {
    height: 32px;
    width: auto;
    border-radius: 8px;
  }

  .header-cta {
    background: var(--primary);
    color: #fff;
    padding: 10px 20px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: background 0.3s ease;
  }

  .header-cta:hover {
    background: var(--primary-hover);
  }

  /* Hero */
  .hero {
    padding: 60px 0;
    text-align: center;
  }

  .hero h1 {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 20px;
    color: var(--text-main);
    letter-spacing: -0.02em;
  }

  .hero p {
    font-size: 1.125rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 32px;
  }

  .cta-button {
    display: inline-block;
    background: var(--primary);
    color: #fff;
    padding: 16px 36px;
    border-radius: 40px;
    font-size: 1.125rem;
    font-weight: 600;
    transition: transform 0.2s ease, background 0.3s ease;
    box-shadow: 0 8px 24px rgba(200, 57, 43, 0.2);
  }

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

  .hero-image {
    margin-top: 48px;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(44, 30, 28, 0.1);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
  }

  /* Section Common */
  section {
    padding: 60px 0;
  }

  .section-title {
    text-align: center;
    margin-bottom: 40px;
  }

  .section-title h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 12px;
  }

  .section-title p {
    color: var(--text-muted);
    font-size: 1.05rem;
  }

  /* Character Grid */
  .filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 32px;
  }

  .filter-btn {
    background: #fff;
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s ease;
  }

  .filter-btn.active, .filter-btn:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
  }

  .grid-4 {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 24px;
  }

  .char-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
    border: 1px solid var(--border);
  }

  .char-card:hover {
    transform: translateY(-4px);
  }

  .char-card img {
    width: 100%;
    aspect-ratio: 3 / 4;
    object-fit: cover;
  }

  .char-info {
    padding: 16px;
  }

  .char-info h3 {
    font-size: 1.1rem;
    margin-bottom: 6px;
  }

  .char-info span {
    font-size: 0.85rem;
    color: #fff;
    background: #e2b2b2;
    padding: 2px 10px;
    border-radius: 10px;
    display: inline-block;
  }

  /* Demo Section */
  .demo-section {
    background: #fff;
    border-radius: 24px;
    padding: 40px 20px;
    margin: 0 auto;
    max-width: 1000px;
    box-shadow: var(--shadow);
  }

  .demo-split {
    display: flex;
    gap: 40px;
    align-items: center;
  }

  .demo-text {
    flex: 1;
  }

  .demo-text h2 {
    font-size: 1.8rem;
    margin-bottom: 24px;
  }

  .feature-item {
    margin-bottom: 24px;
  }

  .feature-item h3 {
    font-size: 1.15rem;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .feature-item h3::before {
    content: "";
    display: inline-block;
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
  }

  .feature-item p {
    color: var(--text-muted);
    font-size: 0.95rem;
    padding-left: 16px;
  }

  .demo-image {
    flex: 1;
    max-width: 360px;
  }

  .demo-image img {
    width: 100%;
    border-radius: var(--radius);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
  }

  /* Creator Section */
  .creator-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .creator-card {
    background: #fff;
    padding: 32px 24px;
    border-radius: var(--radius);
    text-align: center;
    border: 1px solid var(--border);
  }

  .creator-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
  }

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

  /* Settings & Privacy */
  .info-block {
    background: #fff;
    padding: 32px;
    border-radius: var(--radius);
    margin-bottom: 24px;
    border: 1px solid var(--border);
  }

  .info-block h2 {
    font-size: 1.6rem;
    margin-bottom: 16px;
  }

  .info-block p, .info-block li {
    color: var(--text-muted);
    font-size: 1rem;
    margin-bottom: 8px;
  }

  .info-block ul {
    list-style: none;
    padding-left: 0;
  }

  .info-block li::before {
    content: "•";
    color: var(--primary);
    font-weight: bold;
    display: inline-block;
    width: 1em;
  }

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

  .faq-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 12px;
    margin-bottom: 16px;
    overflow: hidden;
  }

  .faq-q {
    padding: 20px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .faq-q::after {
    content: "+";
    font-size: 1.2rem;
    color: var(--text-muted);
  }

  .faq-item.open .faq-q::after {
    content: "-";
  }

  .faq-a {
    padding: 0 20px 20px;
    color: var(--text-muted);
    display: none;
    font-size: 0.95rem;
  }

  .faq-item.open .faq-a {
    display: block;
  }

  /* Footer */
  .site-footer {
    text-align: center;
    padding: 40px 20px;
    border-top: 1px solid var(--border);
    margin-top: 60px;
    color: var(--text-muted);
    font-size: 0.9rem;
  }

  .site-footer p {
    margin-bottom: 8px;
  }

  .time-text {
    font-size: 0.8rem;
    color: #a08f8d;
  }

  /* Responsive */
  @media (max-width: 1024px) {
    .hero h1 { font-size: 2.2rem; }
    .demo-split { flex-direction: column; }
    .demo-image { max-width: 100%; }
    .creator-grid { grid-template-columns: repeat(2, 1fr); }
  }

  @media (max-width: 768px) {
    .hero h1 { font-size: 1.8rem; }
    .section-title h2 { font-size: 1.6rem; }
    .creator-grid { grid-template-columns: 1fr; }
    .header-inner { flex-direction: column; gap: 12px; }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .info-block { padding: 24px; }
  }
  
  @media (max-width: 480px) {
    .grid-4 { grid-template-columns: 1fr; }
  }