:root {
    --bg-overlay-strong: rgba(0, 0, 0, 0.72);
    --bg-overlay: rgba(0, 0, 0, 0.6);
    --panel: rgba(255, 255, 255, 0.92);
    --ink: #ffffff;
    --accent: #007acc;
    --muted: rgba(255, 255, 255, 0.75);
}

* {
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
    background: url('/assets/bg.jpg') no-repeat center center fixed;
    background-size: cover;
    color: var(--ink);
}

a {
    color: var(--accent);
}

header {
    background-color: rgba(51, 51, 51, 0.85);
    padding: 10px 0;
    text-align: center;
    position: sticky;
    top: 0;
    z-index: 10;
}

header h1 {
    margin: 10px 0 4px;
    font-size: 1.6em;
}

nav {
    margin: 0;
    padding: 10px;
    text-align: center;
}

nav a {
    color: #fff;
    margin: 0 12px;
    text-decoration: none;
    font-weight: bold;
}

main {
    min-height: 70vh;
}

.hero {
    padding: 100px 20px;
    text-align: center;
    background-color: var(--bg-overlay);
}

.hero h2 {
    font-size: 2.4em;
    margin-bottom: 10px;
}

.hero p {
    font-size: 1.2em;
    margin-bottom: 20px;
}

.button {
    display: inline-block;
    background-color: var(--accent);
    color: #fff;
    padding: 10px 20px;
    text-decoration: none;
    font-weight: bold;
    border-radius: 5px;
}

.page {
    padding: 50px 20px;
    text-align: center;
    background-color: var(--bg-overlay-strong);
}

.page h2 {
    font-size: 2em;
    margin-bottom: 20px;
}

.page p {
    margin-bottom: 20px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.services {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.service {
    background-color: var(--panel);
    color: #000;
    padding: 20px;
    border-radius: 5px;
    max-width: 320px;
    text-align: left;
}

.social-links {
    margin-top: 20px;
}

.social-links a {
    color: var(--accent);
    text-decoration: none;
    margin: 0 10px;
    font-size: 1.1em;
}

.blog-list {
    display: grid;
    gap: 20px;
    max-width: 800px;
    margin: 0 auto;
    text-align: left;
}

.blog-card {
    background-color: var(--panel);
    color: #000;
    padding: 20px;
    border-radius: 6px;
}

.blog-card h3 {
    margin-top: 0;
}

.blog-meta {
    color: #333;
    font-size: 0.95em;
    margin-bottom: 10px;
}

.post {
    max-width: 900px;
    margin: 0 auto;
    text-align: left;
}

.post > h2 {
    color: #fff;
    text-align: left;
}

.post .content {
    background-color: var(--panel);
    color: #000;
    padding: 30px;
    border-radius: 6px;
}

.post .content h1,
.post .content h2,
.post .content h3,
.post .content h4 {
    color: #000;
}

.post .content img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 16px auto;
}

.post .content table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

.post .content th,
.post .content td {
    border: 1px solid #ddd;
    padding: 10px 12px;
    text-align: left;
}

.post .content th {
    background: #f1f1f1;
}

.post .content pre {
    background: #1e1e1e;
    color: #f5f5f5;
    padding: 14px;
    overflow-x: auto;
    border-radius: 6px;
}

.post .content code {
    background: #f0f0f0;
    padding: 2px 6px;
    border-radius: 4px;
}

.post .content pre.mermaid {
    background: #fff;
    color: #000;
}

footer {
    background-color: rgba(51, 51, 51, 0.85);
    text-align: center;
    padding: 14px 0;
}

footer a {
    color: #fff;
    text-decoration: none;
}

@media (max-width: 700px) {
    .hero {
        padding: 70px 16px;
    }

    nav a {
        display: inline-block;
        margin: 6px 10px;
    }

    .service {
        max-width: 100%;
    }
}