:root {
    --background: #f4f5f7;
    --surface: #ffffff;
    --text: #1d2433;
    --secondary: #667085;
    --border: #e4e7ec;
    --accent: #2457d6;
    --code: #18202d;
}

* {
    box-sizing: border-box;
}

html {
    min-height: 100%;
}

body {
    min-height: 100vh;
    margin: 0;
    background: var(--background);
    color: var(--text);
    font-family:
        Inter,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;
    line-height: 1.7;
}

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

a:hover {
    text-decoration: underline;
}

.container {
    width: min(920px, calc(100% - 40px));
    margin: 0 auto;
}

.site-header {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

.header-content {
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
}

.logo {
    color: var(--text);
    font-size: 20px;
    font-weight: 750;
    letter-spacing: 0.04em;
}

.logo:hover {
    text-decoration: none;
}

nav {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
}

nav a {
    color: var(--secondary);
    font-size: 15px;
}

main {
    padding-top: 70px;
    padding-bottom: 80px;
}

.intro {
    max-width: 760px;
    margin-bottom: 70px;
}

.label {
    margin: 0 0 12px;
    color: var(--accent);
    font-size: 14px;
    font-weight: 650;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

h1,
h2,
h3 {
    line-height: 1.25;
}

h1 {
    max-width: 800px;
    margin: 0 0 24px;
    font-size: clamp(36px, 7vw, 58px);
    letter-spacing: -0.04em;
}

h2 {
    margin-top: 50px;
    margin-bottom: 20px;
    font-size: 28px;
}

h3 {
    margin: 8px 0 14px;
    font-size: 23px;
}

.intro > p:not(.label) {
    max-width: 720px;
    color: var(--secondary);
    font-size: 20px;
}

.post-card {
    margin-bottom: 22px;
    padding: 28px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
}

.post-card p {
    color: var(--secondary);
}

.post-date {
    margin: 0;
    color: var(--secondary);
    font-size: 14px;
}

.read-more,
.coming-soon {
    display: inline-block;
    margin-top: 5px;
    font-size: 14px;
    font-weight: 650;
}

.coming-soon {
    color: var(--secondary);
}

.article-page {
    max-width: 800px;
}

.article-page article {
    padding: 42px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
}

.article-page h1 {
    font-size: clamp(34px, 6vw, 50px);
}

.article-page p,
.article-page li {
    font-size: 18px;
}

pre {
    overflow-x: auto;
    padding: 20px;
    background: var(--code);
    color: #f6f7f9;
    border-radius: 10px;
    line-height: 1.55;
}

code {
    font-family:
        "SFMono-Regular",
        Consolas,
        "Liberation Mono",
        monospace;
}

footer {
    padding: 30px 0;
    background: var(--surface);
    color: var(--secondary);
    border-top: 1px solid var(--border);
    font-size: 14px;
}

@media (max-width: 640px) {
    .header-content {
        min-height: 100px;
        align-items: flex-start;
        flex-direction: column;
        justify-content: center;
        gap: 8px;
    }

    nav {
        gap: 16px;
    }

    main {
        padding-top: 45px;
    }

    .article-page article {
        padding: 25px;
    }
}