* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* page */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, sans-serif;
    line-height: 1.6;
    color: #e6e6e6;
    background-color: #151515;
    padding: 0 0 40px 0;
    margin: 0;
}

/* content */
.container {
    max-width: 900px;
    margin: 0 auto;
}

/* headings */
h1, h2, h3 {
    color: #ffffff;
    margin-top: 32px;
    margin-bottom: 12px;
    font-weight: 600;
}

h1 {
    font-size: 2rem;
    border-bottom: 2px solid #2a2f3a;
    padding-bottom: 10px;
}

h2 {
    font-size: 1.4rem;
    border-bottom: 1px solid #2a2f3a;
    padding-bottom: 6px;
}

h3 {
    font-size: 1.1rem;
}

/* paragraphs */
p {
    margin-bottom: 16px;
    color: #cfcfcf;
}

/* links */
a {
    color: #4da3ff;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* lists */
ul, ol {
    margin: 16px 0 16px 24px;
}

li {
    margin-bottom: 8px;
}

/* bold */
strong {
    color: #ffffff;
    font-weight: 600;
}

/* table */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    font-size: 0.9rem;
}

thead {
    background-color: #1a1f27;
}

th, td {
    padding: 10px;
    border: 1px solid #2a2f3a;
    text-align: left;
}

th {
    color: #ffffff;
    font-weight: 600;
}

td {
    color: #cfcfcf;
}

/* spacing */
section {
    margin-bottom: 32px;
}

/* card */
/*.container {
    background: #252525;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}*/

/* mobile */
@media (max-width: 600px) {
    body {
        padding: 20px 12px;
    }

    .container {
        padding: 20px;
    }

    h1 {
        font-size: 1.6rem;
    }

    h2 {
        font-size: 1.2rem;
    }
}

/* head */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(21, 25, 34, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid #2a2f3a;
}

/* layout */
.header-inner {
    max-width: 1000px;
    margin: 0 auto;
    padding: 18px 24px;

    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* type */
.logo {
    font-weight: 700;
    font-size: 1.4rem;
    color: #ffffff;
    letter-spacing: 0.5px;
}

/* nav */
.nav {
    display: flex;
    gap: 24px;
}

.nav a {
    color: #cfcfcf;
    text-decoration: none;
    font-size: 1rem;
    position: relative;
    transition: color 0.2s ease;
}

/* hov */
.nav a:hover {
    color: #ffffff;
}

/* anim ul */
.nav a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -6px;
    width: 0;
    height: 2px;
    background: #4da3ff;
    transition: width 0.25s ease;
}

.nav a:hover::after {
    width: 100%;
}

/* mob header */
@media (max-width: 600px) {
    .header-inner {
        padding: 14px 16px;
    }

    .logo {
        font-size: 1.2rem;
    }

    .nav {
        gap: 16px;
    }

    .nav a {
        font-size: 0.9rem;
    }
}