html,
body {
    margin: 0;
    padding: 0;
    height: 100%;
    background-color: #000;
    color: #fff;
    font-family: Arial, sans-serif;
}

body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(0, 255, 255, 0.15), rgba(0, 0, 255, 0.2));
    background-size: 400% 400%;
    animation: moveBackground 8s infinite linear;
    z-index: 0;
    pointer-events: none;
}

@keyframes moveBackground {
    from {
        background-position: 0 0;
    }

    to {
        background-position: 100% 100%;
    }
}

.top-nav {
    position: fixed;
    top: 12px;
    right: 12px;
    z-index: 1100;
}

.top-nav a {
    display: inline-block;
    padding: 8px 14px;
    border-radius: 999px;
    border: 1px solid rgba(0, 255, 255, 0.4);
    background: rgba(0, 0, 0, 0.45);
    color: cyan;
    text-decoration: none;
    font-weight: bold;
}

.top-nav a:hover {
    border-color: rgba(0, 255, 255, 0.7);
    box-shadow: 0 0 10px rgba(0, 255, 255, 0.35);
    text-decoration: underline;
}

.container {
    box-sizing: border-box;
    margin: 0 auto;
    padding: 56px 20px 80px;
    max-width: 1400px;
    width: 100%;
    position: relative;
    z-index: 1;
}

.title {
    font-size: 1.8rem;
    font-weight: bold;
    margin: 10px 0 8px;
    color: #fc8505;
    text-align: center;
}

.subtitle {
    font-size: 1.1rem;
    color: cyan;
    margin: 0 0 18px;
    font-weight: bold;
    text-align: left;
    max-width: 680px;
}

.content {
    font-size: 1rem;
    color: #ddd;
    line-height: 1.6;
}

.post-list {
    list-style: none;
    padding-left: 0;
}

.post-list li {
    margin: 8px 0;
}

.post-blog-section {
    margin: 0 0 24px;
    padding: 0 0 20px;
    border-bottom: 1px solid rgba(0, 255, 255, 0.22);
    list-style: none;
}

.post-conceptual-section {
    list-style: none;
    margin: 0;
    padding: 0;
}

.post-section-title {
    font-size: 1.05rem;
    font-weight: bold;
    color: #fc8505;
    margin: 0 0 12px;
}

.post-card-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    list-style: none;
    padding: 0;
    margin: 0;
}

.post-featured-card {
    margin: 0;
    padding: 12px 14px;
    border: 1px solid rgba(0, 255, 255, 0.25);
    border-radius: 10px;
    background: rgba(0, 0, 0, 0.35);
}

.post-featured-card a {
    font-size: 1.08rem;
}

.post-conceptual-section .post-group:first-of-type .group-title {
    margin-top: 0;
}

.post-card-row + .post-card-row {
    margin-top: 16px;
}

@media (max-width: 720px) {
    .post-card-row {
        grid-template-columns: 1fr;
    }
}

.list-audio-btn {
    margin-left: 8px;
    padding: 4px 8px;
    border-radius: 8px;
    border: 1px solid rgba(0, 255, 255, 0.4);
    background: rgba(0, 0, 0, 0.45);
    color: cyan;
    font-weight: bold;
    cursor: pointer;
}

.list-audio-btn:hover {
    border-color: rgba(0, 255, 255, 0.7);
    box-shadow: 0 0 8px rgba(0, 255, 255, 0.35);
}

.post-group {
    margin: 12px 0 18px;
}

.group-title {
    font-size: 1.05rem;
    font-weight: bold;
    color: #fc8505;
    margin: 0 0 6px;
}

.post-sublist {
    list-style: none;
    padding-left: 0;
    margin: 0;
}

.post-list a {
    color: cyan;
    font-weight: bold;
    text-decoration: none;
}

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

.post-title {
    font-size: 1.4rem;
    font-weight: bold;
    color: #fc8505;
    margin: 0 auto 12px;
    max-width: 900px;
}

.post-actions {
    margin: 8px auto 18px;
    max-width: 900px;
}

.post-actions a {
    display: inline-block;
    padding: 6px 10px;
    border-radius: 8px;
    border: 1px solid rgba(0, 255, 255, 0.4);
    background: rgba(0, 0, 0, 0.45);
    color: cyan;
    text-decoration: none;
    font-weight: bold;
    margin-right: 8px;
}

.post-actions a:hover {
    border-color: rgba(0, 255, 255, 0.7);
    box-shadow: 0 0 10px rgba(0, 255, 255, 0.35);
    text-decoration: underline;
}

.post-body {
    background: rgba(0, 0, 0, 0.35);
    border: 1px solid rgba(0, 255, 255, 0.2);
    border-radius: 10px;
    padding: 16px;
    max-width: 900px;
    margin: 0 auto;
}

.post-body img {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 16px auto;
    border-radius: 8px;
    border: 1px solid rgba(0, 255, 255, 0.2);
}

.post-body h1 + p:has(> img) {
    margin-top: 8px;
}

.post-body p:has(> img) + p {
    font-size: 0.9rem;
    color: #aaa;
    text-align: center;
    margin: -8px auto 20px;
    max-width: 720px;
    line-height: 1.45;
}

.audio-player {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 10px auto 18px;
    max-width: 900px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(0, 255, 255, 0.25);
    border-radius: 10px;
    padding: 10px 12px;
}

.audio-btn {
    padding: 6px 10px;
    border-radius: 8px;
    border: 1px solid rgba(0, 255, 255, 0.4);
    background: rgba(0, 0, 0, 0.45);
    color: cyan;
    font-weight: bold;
    cursor: pointer;
}

.audio-btn:hover {
    border-color: rgba(0, 255, 255, 0.7);
    box-shadow: 0 0 8px rgba(0, 255, 255, 0.35);
}

.audio-progress {
    flex: 1;
    height: 8px;
    background: rgba(0, 255, 255, 0.2);
    border-radius: 999px;
    position: relative;
    cursor: pointer;
}

.audio-progress-bar {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background: cyan;
    border-radius: 999px;
    width: 0%;
}

.audio-time {
    min-width: 72px;
    font-size: 0.9rem;
    color: #ddd;
    text-align: right;
}

.error {
    color: #ff8a80;
    background: rgba(255, 138, 128, 0.08);
    border: 1px solid rgba(255, 138, 128, 0.2);
    padding: 10px 12px;
    border-radius: 8px;
    font-weight: bold;
    margin-top: 10px;
}