:root{
      --bg: #081521;
      --bg-soft: #0d2030;
      --panel: rgba(255,255,255,0.06);
      --panel-strong: rgba(255,255,255,0.09);
      --text: #edf3f8;
      --muted: #b7c4cf;
      --line: rgba(255,255,255,0.10);
      --line-strong: rgba(255,255,255,0.16);
      --gold: #f5c451;
      --green: #00c46c;
      --shadow: 0 18px 60px rgba(0,0,0,0.28);
      --radius: 22px;
      --radius-sm: 14px;
      --max: 1220px;
      --nav-h: 84px;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      font-family: "Jost", sans-serif;
      background:
        radial-gradient(circle at top left, rgba(0,196,108,0.08), transparent 30%),
        radial-gradient(circle at top right, rgba(245,196,81,0.06), transparent 28%),
        linear-gradient(180deg, #07131d 0%, #091b29 100%);
      color: var(--text);
    }

    img { max-width: 100%; display: block; }
    a { color: inherit; text-decoration: none; }

    .container {
      width: min(var(--max), calc(100% - 40px));
      margin: 0 auto;
    }

    /* Header */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1200;
      backdrop-filter: blur(16px);
      background: rgba(8, 21, 33, 0.84);
      border-bottom: 1px solid var(--line);
    }

    .navbar {
      min-height: var(--nav-h);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-width: 0;
    }

    .brand .logo-slot {
      width: 46px;
      height: 46px;
      border-radius: 14px;
      background: linear-gradient(135deg, rgba(255,255,255,0.10), rgba(255,255,255,0.04));
      border: 1px solid var(--line);
      display: grid;
      place-items: center;
      overflow: hidden;
      flex: 0 0 auto;
      box-shadow: inset 0 1px 0 rgba(255,255,255,0.08);
    }

    .brand .logo-slot img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .brand strong {
      display: block;
      font-size: 1.02rem;
      line-height: 1.1;
      letter-spacing: 0.01em;
    }

    .brand small {
      display: block;
      color: var(--muted);
      font-size: 0.84rem;
      margin-top: 2px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 8px;
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .nav-links a {
      color: var(--muted);
      padding: 10px 14px;
      border-radius: 12px;
      font-weight: 500;
      transition: 0.25s ease;
    }

    .nav-links a:hover,
    .nav-links a.active {
      color: #fff;
      background: rgba(255,255,255,0.06);
    }

    .menu-btn {
      width: 46px;
      height: 46px;
      border: 1px solid var(--line);
      background: rgba(255,255,255,0.05);
      color: #fff;
      border-radius: 14px;
      display: none;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: 0.25s ease;
    }

    .menu-btn:hover {
      background: rgba(255,255,255,0.10);
    }

    .mobile-panel {
      display: none;
      overflow: hidden;
      max-height: 0;
      transition: max-height 0.35s ease;
      border-top: 1px solid transparent;
    }

    .mobile-panel.open {
      display: block;
      max-height: 420px;
      border-top-color: var(--line);
    }

    .mobile-panel .inner {
      display: grid;
      gap: 8px;
      padding: 16px 0 18px;
    }

    .mobile-panel a {
      color: #fff;
      padding: 12px 14px;
      border-radius: 12px;
      background: rgba(255,255,255,0.05);
      border: 1px solid rgba(255,255,255,0.06);
    }

    /* Hero */
    .blog-hero {
      position: relative;
      min-height: 520px;
      padding: 140px 0 96px;
      overflow: hidden;
      background: url("https://images.unsplash.com/photo-1642790551116-18e150f248e1?auto=format&fit=crop&w=1800&q=80") center/cover no-repeat;
    }

    .blog-hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(180deg, rgba(5,10,16,0.52) 0%, rgba(5,10,16,0.76) 60%, rgba(8,21,33,0.96) 100%);
    }

    .blog-hero::after {
      content: "";
      position: absolute;
      inset: auto 0 0 0;
      height: 160px;
      background: linear-gradient(180deg, transparent 0%, rgba(8,21,33,1) 100%);
    }

    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 900px;
      text-align: center;
      margin: 0 auto;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 8px 14px;
      border-radius: 999px;
      background: rgba(255,255,255,0.12);
      border: 1px solid rgba(255,255,255,0.18);
      color: #fff;
      font-weight: 600;
      font-size: 0.9rem;
      backdrop-filter: blur(12px);
    }

    .hero-content h1 {
      margin: 18px 0 14px;
      font-size: clamp(2.2rem, 4vw, 4.15rem);
      line-height: 1.02;
      letter-spacing: -0.03em;
    }

    .hero-content p {
      margin: 0 auto;
      max-width: 760px;
      font-size: 1.08rem;
      color: #dbe5ee;
    }

    .post-meta {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 12px;
      margin-top: 22px;
    }

    .post-meta span {
      padding: 8px 14px;
      border-radius: 999px;
      font-size: 0.94rem;
      color: #eef6fb;
      background: rgba(255,255,255,0.10);
      border: 1px solid rgba(255,255,255,0.14);
      backdrop-filter: blur(10px);
    }

    .hero-btns {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 12px;
      margin-top: 28px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      padding: 13px 18px;
      border-radius: 14px;
      font-weight: 600;
      border: 1px solid transparent;
      transition: transform 0.25s ease, background 0.25s ease, border-color 0.25s ease;
    }

    .btn:hover { transform: translateY(-2px); }

    .btn-primary {
      background: var(--green);
      color: #04120a;
      box-shadow: 0 10px 30px rgba(0,196,108,0.22);
    }

    .btn-secondary {
      color: #fff;
      background: rgba(255,255,255,0.08);
      border-color: rgba(255,255,255,0.14);
    }

    /* Main layout */
    .content-section {
      padding: 48px 0 84px;
    }

    .blog-wrap {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 320px;
      gap: 30px;
      align-items: start;
    }

    .article-card {
      background: linear-gradient(180deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0.03) 100%);
      border: 1px solid var(--line);
      border-radius: 28px;
      padding: 34px;
      box-shadow: var(--shadow);
      backdrop-filter: blur(10px);
    }

    .article-card p,
    .article-card li {
      color: var(--muted);
      font-size: 1.02rem;
      line-height: 1.85;
    }

    .article-card p { margin: 0 0 18px; }
    .article-card ul,
    .article-card ol { margin: 12px 0 0 22px; }
    .article-card li { margin-bottom: 10px; }

    .article-card h2 {
      margin: 38px 0 14px;
      font-size: clamp(1.5rem, 2vw, 2rem);
      line-height: 1.15;
      color: #fff;
      scroll-margin-top: 120px;
    }

    .article-card h3 {
      margin: 24px 0 10px;
      font-size: 1.18rem;
      color: #f7fafc;
      scroll-margin-top: 120px;
    }

    .lead {
      font-size: 1.12rem;
      color: #e8f0f6;
    }

    .callout {
      margin: 26px 0;
      padding: 18px 18px 18px 20px;
      border-radius: 18px;
      background: linear-gradient(145deg, rgba(0,196,108,0.10), rgba(255,255,255,0.03));
      border: 1px solid rgba(0,196,108,0.22);
      box-shadow: inset 0 1px 0 rgba(255,255,255,0.04);
    }

    .callout strong {
      color: #f8fcff;
    }

    blockquote {
      margin: 26px 0;
      padding: 22px 22px 22px 20px;
      border-left: 4px solid var(--gold);
      border-radius: 18px;
      background: rgba(255,255,255,0.05);
      color: #f4f8fb;
      font-style: italic;
    }

    .section-card {
      position: relative;
      height: 270px;
      border-radius: 24px;
      overflow: hidden;
      margin: 28px 0;
      border: 1px solid rgba(255,255,255,0.10);
      box-shadow: var(--shadow);
      background: #0d1e2d;
    }

    .section-card img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }

    .section-card:hover img { transform: scale(1.05); }

    .section-card .card-content {
      position: absolute;
      inset: auto 0 0 0;
      padding: 18px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      background: linear-gradient(180deg, transparent 0%, rgba(0,0,0,0.72) 100%);
    }

    .section-card .card-content span {
      font-weight: 600;
      color: #fff;
    }

    .mini-btn {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 10px 14px;
      border-radius: 12px;
      background: rgba(255,255,255,0.12);
      border: 1px solid rgba(255,255,255,0.16);
      font-weight: 600;
      white-space: nowrap;
    }

    .mini-btn:hover {
      background: rgba(255,255,255,0.18);
    }

    .toc {
      position: sticky;
      top: 106px;
      border-radius: 24px;
      background: linear-gradient(180deg, rgba(0,0,0,0.55), rgba(255,255,255,0.03));
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
      overflow: hidden;
      backdrop-filter: blur(12px);
    }

    .toc-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      width: 100%;
      padding: 20px 20px 16px;
      background: transparent;
      color: #fff;
      border: 0;
      cursor: pointer;
      font: inherit;
      font-weight: 700;
      font-size: 1.08rem;
    }

    .toc-head span:last-child {
      width: 34px;
      height: 34px;
      display: inline-grid;
      place-items: center;
      border-radius: 10px;
      background: rgba(255,255,255,0.06);
      border: 1px solid rgba(255,255,255,0.08);
      transition: transform 0.25s ease;
      flex: 0 0 auto;
    }

    .toc.open .toc-head span:last-child {
      transform: rotate(180deg);
    }

    .toc-body {
      padding: 0 20px 20px;
    }

    .toc-links {
      display: grid;
      gap: 4px;
    }

    .toc-links a {
      color: var(--muted);
      padding: 11px 12px;
      border-radius: 12px;
      border: 1px solid transparent;
      transition: 0.22s ease;
      font-size: 0.97rem;
    }

    .toc-links a:hover {
      color: #fff;
      background: rgba(255,255,255,0.05);
      border-color: rgba(255,255,255,0.06);
    }

    .toc-links a.active {
      color: #fff;
      background: rgba(0,196,108,0.12);
      border-color: rgba(0,196,108,0.22);
      box-shadow: inset 3px 0 0 var(--green);
    }

    .toc-cta {
      margin-top: 18px;
      padding-top: 18px;
      border-top: 1px solid var(--line);
    }

    .toc-note {
      color: var(--muted);
      font-size: 0.92rem;
      margin-bottom: 12px;
    }

    .grid-cards {
      margin-top: 16px;
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 14px;
    }

    .grid-cards a {
      display: block;
      padding: 16px;
      border-radius: 18px;
      background: rgba(255,255,255,0.05);
      border: 1px solid var(--line);
      transition: transform 0.22s ease, border-color 0.22s ease, background 0.22s ease;
    }

    .grid-cards a:hover {
      transform: translateY(-3px);
      background: rgba(255,255,255,0.08);
      border-color: rgba(0,196,108,0.24);
    }

    .grid-cards strong {
      display: block;
      color: #fff;
      margin-bottom: 6px;
    }

    .grid-cards span {
      color: var(--muted);
      font-size: 0.95rem;
      line-height: 1.55;
    }

    .author-box {
      margin-top: 28px;
      display: flex;
      align-items: center;
      gap: 16px;
      padding: 18px;
      border-radius: 20px;
      background: rgba(255,255,255,0.05);
      border: 1px solid var(--line);
    }

    .author-box .avatar {
      width: 58px;
      height: 58px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: linear-gradient(135deg, rgba(255,255,255,0.12), rgba(0,196,108,0.16));
      border: 1px solid rgba(255,255,255,0.10);
      color: #fff;
      font-size: 1.3rem;
      flex: 0 0 auto;
    }

    .author-box p {
      margin: 0;
    }

    .cta-strip {
      margin-top: 28px;
      padding: 22px;
      border-radius: 22px;
      background: linear-gradient(145deg, rgba(245,196,81,0.12), rgba(255,255,255,0.04));
      border: 1px solid rgba(245,196,81,0.18);
    }

    .cta-strip strong {
      color: #fff;
    }

    .site-footer {
      margin-top: 34px;
      border-top: 1px solid var(--line);
      background:
        radial-gradient(circle at top center, rgba(255,255,255,0.04), transparent 28%),
        linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
    }

    .footer-grid {
      padding: 42px 0 18px;
      display: grid;
      grid-template-columns: 1.3fr 0.8fr 0.9fr;
      gap: 24px;
    }

    .footer-brand p,
    .footer-col a,
    .footer-col p {
      color: var(--muted);
    }

    .footer-brand .brand {
      margin-bottom: 12px;
    }

    .footer-col h4 {
      margin: 0 0 12px;
      color: #fff;
      font-size: 1rem;
    }

    .footer-links {
      display: grid;
      gap: 10px;
    }

    .footer-links a:hover {
      color: #fff;
    }

    .footer-contact {
      display: grid;
      gap: 10px;
    }

    .footer-contact i {
      width: 18px;
      color: var(--gold);
      margin-right: 8px;
    }

    .footer-bottom {
      padding: 16px 0 28px;
      border-top: 1px solid var(--line);
      display: flex;
      justify-content: space-between;
      gap: 12px;
      flex-wrap: wrap;
      color: var(--muted);
      font-size: 0.95rem;
    }

    .socials {
      display: flex;
      gap: 10px;
    }

    .socials a {
      width: 38px;
      height: 38px;
      border-radius: 12px;
      display: grid;
      place-items: center;
      background: rgba(255,255,255,0.05);
      border: 1px solid var(--line);
      transition: 0.22s ease;
    }

    .socials a:hover {
      background: rgba(255,255,255,0.10);
      color: #fff;
      transform: translateY(-2px);
    }

    @media (max-width: 1080px) {
      .blog-wrap {
        grid-template-columns: 1fr;
      }

      .toc {
        position: relative;
        top: 0;
      }

      .toc-body {
        display: none;
      }

      .toc.open .toc-body {
        display: block;
      }
    }

    @media (min-width: 1081px) {
      .toc-body {
        display: block !important;
      }
    }

    @media (max-width: 900px) {
      .footer-grid {
        grid-template-columns: 1fr;
      }

      .menu-btn {
        display: inline-flex;
      }

      .nav-links {
        display: none;
      }

      .blog-hero {
        min-height: 480px;
        padding: 120px 0 82px;
      }

      .article-card {
        padding: 24px;
      }
    }

    @media (max-width: 680px) {
      .container {
        width: min(var(--max), calc(100% - 26px));
      }

      .hero-content h1 {
        font-size: 2rem;
      }

      .post-meta {
        gap: 10px;
      }

      .post-meta span {
        font-size: 0.88rem;
      }

      .hero-btns {
        flex-direction: column;
        align-items: stretch;
      }

      .article-card {
        padding: 20px;
        border-radius: 22px;
      }

      .section-card {
        height: 220px;
      }

      .section-card .card-content {
        flex-direction: column;
        align-items: flex-start;
      }

      .grid-cards {
        grid-template-columns: 1fr;
      }

      .author-box {
        align-items: flex-start;
      }

      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }