:root {
     color-scheme: dark;
     --bg: #02040b;
     --panel: #09101b;
     --border: #164a76;
     --text: #e6edf3;
     --muted: #7d9bb1;
     --accent: #58d8ff;
     --accent-soft: rgba(88, 216, 255, 0.16);
     --danger: #ff5a5f;
     --radius: 20px;
}

* {
     box-sizing: border-box;
}

html,
body {
     margin: 0;
     min-height: 100%;
     background:
          radial-gradient(
               circle at top,
               rgba(88, 216, 255, 0.08),
               transparent 35%
          ),
          linear-gradient(180deg, #02040b 0%, #050915 100%);
     color: var(--text);
     font-family: "Fira Code", Consolas, "Courier New", monospace;
     line-height: 1.6;
}

body {
     padding: 0;
}

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

a:hover,
a:focus {
     color: #bae9ff;
}

.site-shell {
     max-width: 1200px;
     margin: 0 auto;
     padding: 24px;
}

.site-header {
     padding: 28px 20px;
     border: 1px solid rgba(88, 216, 255, 0.12);
     border-radius: var(--radius);
     background: rgba(6, 13, 22, 0.85);
     backdrop-filter: blur(12px);
     margin-bottom: 24px;
}

.header-inner {
     display: grid;
     gap: 20px;
}

.eyebrow {
     margin: 0 0 10px;
     color: var(--accent);
     letter-spacing: 0.2em;
     text-transform: uppercase;
     font-size: 0.85rem;
}

.site-header h1 {
     margin: 0;
     font-size: clamp(2rem, 4vw, 3.6rem);
}

.subtitle {
     margin: 14px 0 0;
     color: var(--muted);
     max-width: 700px;
}

.site-nav {
     display: flex;
     flex-wrap: wrap;
     gap: 12px;
}

.nav-link {
     display: inline-flex;
     align-items: center;
     padding: 12px 16px;
     border-radius: 999px;
     border: 1px solid rgba(88, 216, 255, 0.12);
     background: rgba(255, 255, 255, 0.02);
     transition:
          background 0.2s ease,
          border-color 0.2s ease;
}

.nav-link:hover {
     background: rgba(88, 216, 255, 0.12);
     border-color: rgba(88, 216, 255, 0.28);
}

.hero-panel,
.content-panel {
     border: 1px solid rgba(255, 255, 255, 0.06);
     background: rgba(8, 16, 28, 0.88);
     border-radius: var(--radius);
     padding: 28px;
     margin-bottom: 24px;
}

.hero-panel {
     display: grid;
     grid-template-columns: 1.6fr 1fr;
     gap: 24px;
     align-items: center;
}

.hero-panel h2 {
     margin-top: 0;
     font-size: clamp(2.1rem, 3.5vw, 3.5rem);
}

.hero-panel p {
     max-width: 640px;
}

.hero-code {
     background: rgba(15, 23, 40, 0.95);
     border: 1px solid rgba(88, 216, 255, 0.14);
     border-radius: 18px;
     overflow: hidden;
}

.hero-code pre {
     margin: 0;
     padding: 24px;
     font-size: 0.92rem;
     color: #a7d2ff;
}

.post-grid,
.overview-grid {
     display: grid;
     gap: 20px;
}

.post-grid {
     grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.overview-grid {
     grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.post-card,
.overview-card {
     border: 1px solid rgba(88, 216, 255, 0.1);
     border-radius: 18px;
     padding: 24px;
     background: rgba(10, 18, 32, 0.9);
     transition:
          transform 0.2s ease,
          border-color 0.2s ease;
}

.post-card:hover,
.overview-card:hover {
     transform: translateY(-4px);
     border-color: rgba(88, 216, 255, 0.22);
}

.post-card h3,
.overview-card h3 {
     margin: 8px 0 14px;
     color: #f1f8ff;
}

.card-meta {
     margin: 0 0 12px;
     color: var(--accent);
     font-size: 0.85rem;
}

.post-card p,
.overview-card p {
     margin: 0;
     color: var(--muted);
}

.post-detail {
     max-width: 900px;
}

.detail-header {
     margin-bottom: 24px;
}

.post-body {
     padding-top: 8px;
     color: var(--text);
}

.post-body h2,
.post-body h3,
.post-body h4 {
     color: #ffffff;
}

.post-body code,
.post-body pre {
     font-family: "Fira Code", Consolas, "Courier New", monospace;
}

.post-body pre {
     background: rgba(4, 11, 20, 0.95);
     padding: 18px;
     border-radius: 16px;
     overflow-x: auto;
     border: 1px solid rgba(88, 216, 255, 0.14);
}

.post-body code {
     background: rgba(88, 216, 255, 0.08);
     padding: 3px 6px;
     border-radius: 6px;
}

.button {
     display: inline-flex;
     align-items: center;
     justify-content: center;
     padding: 12px 18px;
     margin-top: 20px;
     background: var(--accent);
     color: #02040b;
     border-radius: 999px;
     font-weight: 600;
}

.site-footer {
     padding: 24px 20px;
     text-align: center;
     color: var(--muted);
}

@media (max-width: 840px) {
     .hero-panel {
          grid-template-columns: 1fr;
     }
}

@media (max-width: 560px) {
     .site-shell {
          padding: 16px;
     }

     .site-nav {
          justify-content: flex-start;
     }

     .button {
          width: 100%;
     }
}