:root {
      --op-bg-deep: #020713;
      --op-bg-panel: #051325;
      --op-bg-panel-alt: #071a33;

      --op-text-main: #e5f1ff;
      --op-text-soft: #a0b2d2;
      --op-text-faded: #7d90b2;
      --op-text-bright: #ffffff;

      --op-border-strong: rgba(122, 190, 255, 0.96);
      --op-border-soft: rgba(96, 145, 220, 0.9);

      --op-accent: #3ba7ff;
      --op-accent-soft: rgba(59, 167, 255, 0.24);
      --op-accent-strong: #66d1ff;

      --op-success: #53e0b3;
      --op-warning: #ffd36b;
      --op-danger: #ff6f8a;
    }

    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      min-height: 100vh;
      background:
        radial-gradient(circle at 10% -10%, rgba(121, 190, 255, 0.28) 0, transparent 55%),
        radial-gradient(circle at 90% -15%, rgba(98, 170, 255, 0.22) 0, transparent 60%),
        linear-gradient(180deg, #020713 0%, #01030b 52%, #000 100%);
      color: var(--op-text-main);
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
        sans-serif;
    }

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

    a:hover {
      text-decoration: underline;
    }

    main {
      padding: 1rem 0 2rem;
    }

    @media (max-width: 575.98px) {
      main {
        padding: 1.6rem 0 3rem;
      }
    }

    .op-page-header {
      margin-bottom: 1.8rem;
    }

    .op-page-kicker {
      font-size: 0.78rem;
      text-transform: uppercase;
      letter-spacing: 0.16em;
      color: var(--op-text-soft);
      margin-bottom: 0.25rem;
    }

    .op-page-title {
      font-size: clamp(1.8rem, 3vw, 2.3rem);
      font-weight: 600;
      color: var(--op-text-bright);
      margin-bottom: 0.35rem;
    }

    .op-page-subtitle {
      font-size: 0.9rem;
      color: var(--op-text-soft);
      max-width: 640px;
    }

    /* Glass panel utility */
    .op-glass-panel {
      border-radius: 18px;
      background: radial-gradient(circle at top left,
                  rgba(92, 160, 255, 0.32) 0,
                  rgba(5, 15, 32, 0.97) 46%,
                  #040915 100%);
      border: 1px solid var(--op-border-soft);
      box-shadow:
        0 0 0 1px rgba(0, 0, 0, 0.97),
        0 24px 48px rgba(5, 20, 48, 0.94),
        inset 0 0 18px rgba(110, 180, 255, 0.15);
      padding: 1rem 1.2rem;
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
    }

    .op-glass-panel--alt {
      background: radial-gradient(circle at top right,
                  rgba(111, 187, 255, 0.24) 0,
                  rgba(4, 15, 32, 0.96) 55%,
                  #030712 100%);
    }

    .op-panel-header-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 0.5rem;
      margin-bottom: 0.7rem;
    }

    .op-panel-title {
      font-size: 0.92rem;
      font-weight: 500;
      color: var(--op-text-bright);
    }

    .op-panel-sub {
      font-size: 0.78rem;
      color: var(--op-text-faded);
    }

    .op-panel-divider {
      height: 1px;
      border-radius: 999px;
      background: linear-gradient(
        90deg,
        rgba(110, 180, 255, 0.08),
        rgba(110, 180, 255, 0.85),
        rgba(110, 180, 255, 0.08)
      );
      margin: 0.5rem 0 0.7rem;
    }

    .op-badge-pill {
      display: inline-flex;
      align-items: center;
      gap: 0.25rem;
      padding: 0.1rem 0.55rem;
      border-radius: 999px;
      font-size: 0.7rem;
      border: 1px solid rgba(122, 190, 255, 0.9);
      background: rgba(71, 159, 255, 0.26);
      color: #dbe9ff;
      white-space: nowrap;
    }

    .op-badge-pill i {
      font-size: 0.8rem;
    }

    .op-meta-text {
      font-size: 0.76rem;
      color: var(--op-text-faded);
    }

    .op-tag-pill {
      display: inline-flex;
      align-items: center;
      justify-content: space-between;
      gap: 0.4rem;
      padding: 0.28rem 0.65rem;
      border-radius: 999px;
      border: 1px solid rgba(90, 140, 222, 0.95);
      background: rgba(5, 13, 26, 0.96);
      font-size: 0.78rem;
      color: var(--op-text-soft);
      width: 100%;
      transition: 0.14s ease-out;
    }

    .op-tag-pill span:last-child {
      font-size: 0.74rem;
      color: var(--op-text-faded);
    }

    .op-tag-pill:hover {
      border-color: rgba(151, 210, 255, 1);
      color: var(--op-text-bright);
      text-decoration: none;
      box-shadow:
        0 0 0 1px rgba(0, 0, 0, 0.96),
        0 0 16px rgba(148, 206, 255, 0.7);
    }

    /* Layout */
    .op-blog-layout {
      margin-top: 0.7rem;
    }

    .op-blog-main-column {
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }

    .op-blog-sidebar {
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }

    /* Blog post cards */
    .op-post-card {
      border-radius: 18px;
      overflow: hidden;
      border: 1px solid rgba(81, 132, 210, 0.95);
      background: radial-gradient(circle at top left,
                  rgba(83, 152, 252, 0.18) 0,
                  rgba(3, 9, 20, 0.98) 46%,
                  #01040c 100%);
      box-shadow:
        0 0 0 1px rgba(0, 0, 0, 0.97),
        0 18px 40px rgba(0, 0, 0, 0.96);
      display: flex;
      flex-direction: column;
      transition: transform 0.16s ease-out, box-shadow 0.16s ease-out,
        border-color 0.16s ease-out;
    }

    .op-post-card:hover {
      transform: translateY(-2px);
      border-color: rgba(151, 210, 255, 1);
      box-shadow:
        0 0 0 1px rgba(0, 0, 0, 0.97),
        0 24px 52px rgba(0, 0, 0, 0.98),
        0 0 20px rgba(148, 206, 255, 0.36);
    }

    .op-post-image {
      position: relative;
      width: 100%;
      height: 0;
      padding-top: 56.25%; /* 16:9 */
      background:
        radial-gradient(circle at 10% 0, rgba(148, 206, 255, 0.7) 0, transparent 55%),
        radial-gradient(circle at 90% 100%, rgba(83, 224, 179, 0.65) 0, transparent 55%),
        linear-gradient(135deg, #031326 0%, #00040b 100%);
      overflow: hidden;
    }

    .op-post-image::after {
      content: "";
      position: absolute;
      inset: 0;
      background: radial-gradient(
        circle at top left,
        rgba(255, 255, 255, 0.14) 0,
        transparent 55%
      );
      mix-blend-mode: screen;
      opacity: 0.75;
    }

    .op-post-body {
      padding: 0.8rem 0.95rem 0.85rem;
      display: flex;
      flex-direction: column;
      gap: 0.35rem;
    }

    .op-post-kicker-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 0.4rem;
      margin-bottom: 0.1rem;
    }

    .op-post-kicker {
      font-size: 0.75rem;
      text-transform: uppercase;
      letter-spacing: 0.16em;
      color: var(--op-text-soft);
    }

    .op-post-title {
      font-size: 1.02rem;
      font-weight: 500;
      color: var(--op-text-bright);
      margin-bottom: 0.1rem;
    }

    .op-post-title a {
      text-decoration: none;
    }

    .op-post-title a:hover {
      text-decoration: underline;
    }

    .op-post-excerpt {
      font-size: 0.84rem;
      color: var(--op-text-soft);
      margin-bottom: 0.2rem;
    }

    .op-post-meta-row {
      display: flex;
      flex-wrap: wrap;
      gap: 0.4rem 0.7rem;
      align-items: center;
      justify-content: space-between;
      margin-top: 0.15rem;
    }

    .op-post-meta-left {
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
      font-size: 0.76rem;
      color: var(--op-text-faded);
    }

    .op-post-meta-left i {
      font-size: 0.8rem;
      opacity: 0.9;
    }

    .op-post-meta-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 0.25rem;
      font-size: 0.73rem;
    }

    .op-post-tag {
      padding: 0.1rem 0.4rem;
      border-radius: 999px;
      border: 1px solid rgba(84, 136, 210, 0.9);
      color: var(--op-text-soft);
      background: rgba(4, 12, 28, 0.96);
    }

    /* Sidebar: top authors */
    .op-author-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 0.6rem 0.5rem;
    }

    .op-author-card {
      text-align: center;
      font-size: 0.78rem;
      color: var(--op-text-soft);
    }

    .op-author-avatar {
      width: 54px;
      height: 54px;
      border-radius: 50%;
      border: 2px solid rgba(151, 210, 255, 1);
      margin: 0 auto 0.25rem;
      position: relative;
      overflow: hidden;
      background:
        radial-gradient(circle at 10% 0, rgba(148, 206, 255, 0.7) 0, transparent 55%),
        radial-gradient(circle at 90% 100%, rgba(83, 224, 179, 0.7) 0, transparent 55%),
        linear-gradient(135deg, #031326 0%, #00040b 100%);
      box-shadow:
        0 0 0 1px rgba(0, 0, 0, 0.96),
        0 8px 18px rgba(0, 0, 0, 0.96);
    }

    .op-author-avatar::after {
      content: "";
      position: absolute;
      inset: 0;
      background: radial-gradient(
        circle at 30% 0,
        rgba(255, 255, 255, 0.25) 0,
        transparent 55%
      );
      mix-blend-mode: screen;
      opacity: 0.9;
    }

    .op-author-name {
      font-size: 0.8rem;
      color: var(--op-text-main);
      margin-bottom: 0.05rem;
    }

    .op-author-meta {
      font-size: 0.72rem;
      color: var(--op-text-faded);
    }

    /* Sidebar: tags list */
    .op-tags-list {
      display: flex;
      flex-direction: column;
      gap: 0.35rem;
    }

    /* Sidebar: top viewed posts */
    .op-top-posts-list {
      list-style: none;
      padding: 0;
      margin: 0;
      display: flex;
      flex-direction: column;
      gap: 0.35rem;
      font-size: 0.82rem;
    }

    .op-top-post-item {
      display: flex;
      align-items: flex-start;
      gap: 0.55rem;
      padding: 0.45rem 0.55rem;
      border-radius: 12px;
      border: 1px solid rgba(55, 95, 167, 0.85);
      background: rgba(4, 11, 24, 0.98);
      transition: 0.14s ease-out;
    }

    .op-top-post-rank {
      width: 22px;
      height: 22px;
      border-radius: 999px;
      border: 1px solid rgba(151, 210, 255, 0.96);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 0.75rem;
      color: var(--op-text-main);
      margin-top: 0.1rem;
      flex-shrink: 0;
      background: radial-gradient(circle at 30% 0,
                  rgba(148, 206, 255, 0.96) 0,
                  rgba(67, 151, 255, 0.98) 40%,
                  #020713 100%);
      box-shadow:
        0 0 0 1px rgba(0, 0, 0, 0.96),
        0 5px 13px rgba(0, 0, 0, 0.95);
    }

    .op-top-post-content {
      flex: 1;
    }

    .op-top-post-title {
      font-size: 0.82rem;
      color: var(--op-text-main);
      margin-bottom: 0.1rem;
    }

    .op-top-post-meta {
      font-size: 0.74rem;
      color: var(--op-text-faded);
      display: flex;
      align-items: center;
      gap: 0.3rem;
    }

    .op-top-post-meta i {
      font-size: 0.82rem;
      opacity: 0.9;
    }

    .op-top-post-item:hover {
      border-color: rgba(151, 210, 255, 1);
      box-shadow:
        0 0 0 1px rgba(0, 0, 0, 0.96),
        0 0 16px rgba(148, 206, 255, 0.7);
      text-decoration: none;
    }

    /* Responsive tweaks */
    @media (max-width: 991.98px) {
      .op-blog-layout {
        margin-top: 0.3rem;
      }
      .op-blog-sidebar {
        margin-top: 1.3rem;
      }
    }