:root {
    --primary-color: #ffffff;
    --text-color: #333333;
    --accent-red: #d32f2f;
    --accent-black: #1a1a1a;
    --gold: #d4af37;
}

body {
    font-family: 'Helvetica Neue', 'Arial', sans-serif;
    background-color: var(--primary-color);
    color: var(--text-color);
    margin: 0;
    padding: 0;
    line-height: 1.6;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(211, 47, 47, 0.03) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(26, 26, 26, 0.03) 0%, transparent 20%);
}

header {
    background-color: var(--accent-black);
    color: var(--primary-color);
    padding: 20px 0;
    text-align: center;
    border-bottom: 4px solid var(--accent-red);
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    position: relative;
}

header::before {
    content: '♠ ♥ ♣ ♦';
    position: absolute;
    top: 50%;
    left: 20px; display: none;
    transform: translateY(-50%);
    color: var(--gold);
    font-size: 24px;
    opacity: 0.5;
}

header::after {
    content: '♠ ♥ ♣ ♦';
    position: absolute;
    top: 50%;
    right: 20px;
    transform: translateY(-50%);
    color: var(--gold);
    font-size: 24px;
    opacity: 0.5;
}

header h1 {
    margin: 0;
    font-size: 36px;
    font-weight: 300;
    letter-spacing: 2px;
}

header h1 span {
    color: var(--accent-red);
    font-weight: bold;
}

.container {
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 20px;
}

.article-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.article-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #eaeaea;
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(211, 47, 47, 0.15);
    border-color: var(--gold);
}

.article-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-bottom: 3px solid var(--accent-red);
}

.article-card-content {
    padding: 25px;
}

.article-card h2 {
    font-size: 20px;
    margin: 0 0 15px 0;
    color: var(--accent-black);
}

.article-card p {
    color: #666;
    font-size: 14px;
    margin-bottom: 20px;
}

.btn-read {
    display: inline-block;
    padding: 10px 25px;
    background-color: var(--accent-black);
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
    text-transform: uppercase;
    font-size: 12px;
    font-weight: bold;
    letter-spacing: 1px;
    transition: background-color 0.3s, color 0.3s;
    border: 1px solid var(--accent-black);
}

.btn-read:hover {
    background-color: var(--accent-red);
    border-color: var(--accent-red);
}

.pagination {
    display: flex;
    justify-content: center;
    margin-top: 50px;
    gap: 10px;
}

.pagination a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: #fff;
    color: var(--accent-black);
    text-decoration: none;
    border: 1px solid #ddd;
    border-radius: 50%;
    transition: all 0.3s;
    font-weight: bold;
}

.pagination a.active {
    background-color: var(--accent-red);
    color: #fff;
    border-color: var(--accent-red);
}

.pagination a:hover:not(.active) {
    background-color: var(--gold);
    color: #fff;
    border-color: var(--gold);
}

.article-detail {
    background: #fff;
    padding: 50px;
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.05);
    border-top: 5px solid var(--accent-red);
    position: relative;
}

.article-detail::after {
    content: '♠';
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 60px;
    color: rgba(26,26,26,0.03);
}

.article-header {
    text-align: center;
    margin-bottom: 40px;
}

.article-header h1 {
    font-size: 32px;
    color: var(--accent-black);
    margin-bottom: 15px;
}

.article-meta {
    color: #888;
    font-size: 14px;
    font-style: italic;
}

.article-body {
    font-size: 16px;
    line-height: 1.8;
    color: #444;
}

.article-body h3 {
    color: var(--accent-black);
    border-left: 4px solid var(--accent-red);
    padding-left: 15px;
    margin-top: 30px;
}

.back-link {
    display: inline-block;
    margin-bottom: 20px;
    color: var(--accent-red);
    text-decoration: none;
    font-weight: bold;
}

.back-link:hover {
    color: var(--accent-black);
}

footer {
    text-align: center;
    padding: 40px 0;
    background-color: var(--accent-black);
    color: #888;
    margin-top: 60px;
    border-top: 2px solid var(--gold);
}

.poker-suits {
    font-size: 20px;
    margin-bottom: 10px;
}
.suit-red { color: var(--accent-red); }
.suit-black { color: #fff; }

/* 广告位样式 */
.ad-banner {
    margin-bottom: 40px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(211, 47, 47, 0.2);
    border: 2px solid var(--gold);
    background: var(--accent-black);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.ad-banner:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(211, 47, 47, 0.3);
}

.ad-banner a {
    display: flex;
    text-decoration: none;
    align-items: center;
}

.ad-banner img {
    width: 300px;
    height: 120px;
    object-fit: cover;
    border-right: 3px solid var(--accent-red);
}

.ad-content {
    padding: 0 30px;
    flex-grow: 1;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.ad-content h3 {
    color: var(--primary-color);
    margin: 0;
    font-size: 22px;
    letter-spacing: 1px;
}

.ad-content p {
    color: #aaa;
    margin: 5px 0 0 0;
    font-size: 14px;
}

.ad-btn {
    background-color: var(--accent-red);
    color: #fff;
    padding: 12px 30px;
    border-radius: 4px;
    font-weight: bold;
    font-size: 16px;
    text-transform: uppercase;
    transition: all 0.3s;
    border: 2px solid var(--accent-red);
    white-space: nowrap;
}

.ad-banner a:hover .ad-btn {
    background-color: transparent;
    color: var(--accent-red);
}

@media (max-width: 768px) {
    .ad-banner a {
        flex-direction: column;
    }
    .ad-banner img {
        width: 100%;
        height: 150px;
        border-right: none;
        border-bottom: 3px solid var(--accent-red);
    }
    .ad-content {
        padding: 20px;
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
}


/* 德扑圈子 Logo 样式 */
.site-logo {
    position: absolute;
    left: 30px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
    gap: 8px;
    z-index: 10;
    text-decoration: none;
    transition: transform 0.3s ease;
}

.site-logo:hover {
    transform: translateY(-50%) scale(1.05);
}

.site-logo .logo-icon {
    background: linear-gradient(135deg, var(--gold), #fff0b3);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 36px;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.5));
}

.site-logo .logo-text {
    color: var(--gold);
    font-size: 22px;
    font-weight: bold;
    letter-spacing: 2px;
    font-family: 'Helvetica Neue', 'Arial', sans-serif;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
    background: linear-gradient(to right, var(--gold), #fff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

@media (max-width: 768px) {
    .site-logo {
        position: static;
        transform: none;
        justify-content: center;
        margin-bottom: 15px;
    }
    .site-logo:hover {
        transform: scale(1.05);
    }
    header {
        display: flex;
        flex-direction: column;
        align-items: center;
        padding-top: 20px;
    }
    header h1 {
        font-size: 28px;
    }
    header::before, header::after {
        display: none;
    }
}