:root {
      --primary: #1a73e8;
      --primary-soft: #e3f0ff;
      --text-main: #222222;
      --text-muted: #666666;
      --bg: #f5f7fb;
      --white: #ffffff;
      --border: #e0e3eb;
      --radius-lg: 18px;
      --radius-xl: 24px;
      --shadow-soft: 0 10px 30px rgba(15, 23, 42, 0.08);
      --max-width: 1080px;
    }

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

    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      background-color: var(--bg);
      color: var(--text-main);
      line-height: 1.7;
    }

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

    a:hover {
      text-decoration: underline;
    }

    .page-wrapper {
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px 16px 60px;
    }

    /* Top layout: logo + breadcrumb */
    .blog-header-top {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      margin-bottom: 16px;
    }

    .logo {
      font-weight: 700;
      letter-spacing: 0.08em;
      font-size: 14px;
      text-transform: uppercase;
      color: #111827;
    }

    .logo span {
      display: inline-block;
      padding: 4px 8px;
      border-radius: 999px;
      background: #111827;
      color: #ffffff;
      margin-right: 8px;
      font-size: 11px;
    }

    .breadcrumb {
      font-size: 13px;
      color: var(--text-muted);
      text-align: right;
    }

    .breadcrumb a {
      color: var(--text-muted);
    }

    /* Hero card */
    .hero-card {
      background: radial-gradient(circle at top left, #e3f2ff 0, #ffffff 55%, #f6f7ff 100%);
      border-radius: 28px;
      box-shadow: var(--shadow-soft);
      padding: 28px 28px 24px;
      display: grid;
      grid-template-columns: 2fr 1.3fr;
      gap: 24px;
      margin-bottom: 24px;
      border: 1px solid rgba(148, 163, 184, 0.2);
    }

    .hero-main {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 12px;
      padding: 4px 10px;
      border-radius: 999px;
      background: rgba(26, 115, 232, 0.06);
      color: #1d4ed8;
      width: fit-content;
    }

    .hero-badge-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #22c55e;
    }

    h1 {
      font-size: 28px;
      line-height: 1.25;
      letter-spacing: -0.03em;
      margin: 0;
      color: #020617;
    }

    .hero-subtitle {
      font-size: 15px;
      color: var(--text-muted);
      max-width: 520px;
    }

    .hero-subtitle strong {
      font-weight: 600;
    }

    .hero-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 10px 18px;
      margin-top: 8px;
      font-size: 13px;
      color: var(--text-muted);
    }

    .meta-pill {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .meta-dot {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: #94a3b8;
    }

    .hero-aside {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      gap: 12px;
    }

    .comfort-score-card {
      background: rgba(255, 255, 255, 0.9);
      border-radius: 20px;
      padding: 14px 14px 12px;
      border: 1px solid rgba(148, 163, 184, 0.4);
      font-size: 13px;
    }

    .comfort-title {
      font-weight: 600;
      font-size: 13px;
      margin-bottom: 4px;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .comfort-score {
      font-weight: 700;
      font-size: 18px;
      color: var(--primary);
    }

    .comfort-bar {
      margin: 10px 0 6px;
      height: 7px;
      border-radius: 999px;
      background: #e5e7eb;
      overflow: hidden;
      position: relative;
    }

    .comfort-bar-fill {
      position: absolute;
      inset: 0;
      width: 80%;
      background: linear-gradient(90deg, #1d4ed8, #22c55e);
    }

    .comfort-scale {
      display: flex;
      justify-content: space-between;
      font-size: 11px;
      color: var(--text-muted);
    }

    .hero-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      margin-top: 4px;
      font-size: 11px;
    }

    .hero-tag {
      padding: 2px 8px;
      border-radius: 999px;
      background: rgba(15, 23, 42, 0.04);
      color: #4b5563;
    }

    .reading-note {
      font-size: 11px;
      color: #6b7280;
      text-align: right;
      margin-top: 4px;
    }

    /* Layout for content */
    .content-layout {
      display: grid;
      grid-template-columns: minmax(0, 3fr) minmax(260px, 1.1fr);
      gap: 28px;
      align-items: flex-start;
    }

    .blog-content {
      background: var(--white);
      border-radius: var(--radius-xl);
      padding: 24px 22px 28px;
      box-shadow: var(--shadow-soft);
      border: 1px solid var(--border);
    }

    .sidebar {
      position: sticky;
      top: 20px;
      align-self: flex-start;
      display: flex;
      flex-direction: column;
      gap: 18px;
    }

    .toc-card,
    .tip-card {
      background: var(--white);
      border-radius: var(--radius-lg);
      padding: 16px 16px 18px;
      box-shadow: var(--shadow-soft);
      border: 1px solid var(--border);
      font-size: 13px;
    }

    .toc-card h3,
    .tip-card h3 {
      font-size: 14px;
      margin-bottom: 8px;
      color: #020617;
    }

    .toc-card ol {
      padding-left: 18px;
      display: grid;
      gap: 4px;
      font-size: 13px;
    }

    .toc-card a {
      color: var(--text-main);
    }

    .toc-card a:hover {
      color: var(--primary);
    }

    .tip-card ul {
      list-style: disc;
      padding-left: 16px;
      display: grid;
      gap: 4px;
    }

    /* Typography inside article */
    .blog-content h2 {
      font-size: 20px;
      margin: 20px 0 8px;
      color: #020617;
    }

    .blog-content h3 {
      font-size: 17px;
      margin: 18px 0 6px;
      color: #111827;
    }

    .blog-content p {
      margin-bottom: 10px;
      font-size: 14px;
      color: #111827;
    }

    .blog-content strong {
      font-weight: 600;
    }

    .muted {
      color: var(--text-muted);
      font-size: 13px;
    }

    .highlight-box {
      border-radius: 14px;
      padding: 12px 14px;
      background: var(--primary-soft);
      border: 1px solid #bfdbfe;
      font-size: 13px;
      margin: 10px 0 14px;
    }

    .pros-cons {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px;
      margin: 12px 0;
      font-size: 13px;
    }

    .pros-cons-block {
      border-radius: 14px;
      padding: 10px 12px;
      background: #f9fafb;
      border: 1px solid var(--border);
    }

    .pros-cons-block ul {
      padding-left: 16px;
      margin-top: 4px;
    }

    .pros-cons-block li {
      margin-bottom: 3px;
    }

    .inline-label {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 12px;
      padding: 2px 8px;
      border-radius: 999px;
      background: rgba(15, 23, 42, 0.04);
      color: #4b5563;
    }

    .num-badge {
      width: 16px;
      height: 16px;
      border-radius: 999px;
      border: 1px solid #9ca3af;
      font-size: 11px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }

    .pain-table {
      width: 100%;
      border-collapse: collapse;
      margin: 12px 0 16px;
      font-size: 13px;
    }

    .pain-table th,
    .pain-table td {
      border: 1px solid #e5e7eb;
      padding: 8px 9px;
      text-align: left;
    }

    .pain-table th {
      background: #f3f4f6;
      font-weight: 600;
    }

    .badge-soft {
      display: inline-block;
      padding: 2px 8px;
      border-radius: 999px;
      background: rgba(22, 163, 74, 0.08);
      color: #15803d;
      font-size: 11px;
    }

    .faq-block {
      margin-top: 18px;
      border-top: 1px solid #e5e7eb;
      padding-top: 12px;
    }

    .faq-item {
      margin-bottom: 10px;
    }

    .faq-question {
      font-weight: 600;
      font-size: 14px;
    }

    .faq-answer {
      font-size: 13px;
      color: var(--text-muted);
    }

    .cta-strip {
      margin-top: 18px;
      padding: 14px 16px;
      border-radius: 999px;
      background: #020617;
      color: #e5e7eb;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      font-size: 13px;
    }

    .cta-strip button {
      border: none;
      cursor: pointer;
      border-radius: 999px;
      padding: 8px 14px;
      font-size: 13px;
      font-weight: 500;
      background: #f9fafb;
      color: #020617;
    }

    .cta-strip button:hover {
      background: #e5e7eb;
    }

    /* Responsive */
    @media (max-width: 900px) {
      .hero-card {
        grid-template-columns: 1fr;
      }
      .content-layout {
        grid-template-columns: 1fr;
      }
      .sidebar {
        position: static;
      }
      .page-wrapper {
        padding: 16px 12px 40px;
      }
    }

    @media (max-width: 600px) {
      h1 {
        font-size: 22px;
      }
      .hero-card {
        padding: 20px 18px;
      }
      .blog-content {
        padding: 18px 14px 22px;
      }
      .pros-cons {
        grid-template-columns: 1fr;
      }
      .cta-strip {
        border-radius: 18px;
      }
    }