/* ==========================
   DARK SKIN SINGLE PAGE
========================== */

/* ===== 通用单页 ===== */
.dark-single {
    padding: 120px 0 80px;
    background: var(--dark-bg);
}

.dark-single-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--dark-text);
    text-align: center;
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.dark-single-meta {
    text-align: center;
    color: var(--dark-text-muted);
    font-size: 14px;
    margin-bottom: 40px;
}

/* ===== 两栏布局 ===== */
.dark-single-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: flex-start;
    margin-bottom: 40px;
}

/* ===== 左侧图片 ===== */
.dark-single-image {
    border-radius: var(--dark-radius);
    overflow: hidden;
    background: var(--dark-bg-card);
    border: 1px solid var(--dark-border);
}

.dark-single-image img {
    width: 100%;
    height: 380px;
    object-fit: cover;
    display: block;
}

/* ===== 右侧信息 ===== */
.dark-single-content {
    background: var(--dark-bg-card);
    padding: 32px 36px;
    border-radius: var(--dark-radius);
    border: 1px solid var(--dark-border);
}

.dark-single-content p {
    font-size: 15px;
    color: var(--dark-text-secondary);
    line-height: 1.8;
    margin-bottom: 14px;
}

.dark-single-content p:last-child {
    margin-bottom: 0;
}

.dark-single-content strong {
    color: var(--dark-text);
}

.dark-single-content h2,
.dark-single-content h3 {
    color: var(--dark-text);
    margin: 24px 0 12px;
}

.dark-single-content h2 {
    font-size: 28px;
}

.dark-single-content h3 {
    font-size: 22px;
}

.dark-single-content ul,
.dark-single-content ol {
    color: var(--dark-text-secondary);
    padding-left: 24px;
    margin: 12px 0 16px;
}

.dark-single-content ul li,
.dark-single-content ol li {
    margin-bottom: 6px;
    line-height: 1.8;
}

/* ===== 全宽正文（新闻等） ===== */
.dark-single-content-full {
    background: var(--dark-bg-card);
    padding: 40px 48px;
    border-radius: var(--dark-radius);
    border: 1px solid var(--dark-border);
    margin-top: 30px;
}

.dark-single-content-full p {
    font-size: 16px;
    color: var(--dark-text-secondary);
    line-height: 2;
    margin-bottom: 16px;
}

.dark-single-content-full p:last-child {
    margin-bottom: 0;
}

.dark-single-content-full h2,
.dark-single-content-full h3 {
    color: var(--dark-text);
    margin: 28px 0 14px;
}

.dark-single-content-full h2 {
    font-size: 28px;
}

.dark-single-content-full h3 {
    font-size: 22px;
}

.dark-single-content-full img {
    max-width: 100%;
    height: auto;
    border-radius: var(--dark-radius);
    margin: 16px 0;
}

.dark-single-content-full ul,
.dark-single-content-full ol {
    color: var(--dark-text-secondary);
    padding-left: 24px;
    margin: 12px 0 16px;
}

.dark-single-content-full ul li,
.dark-single-content-full ol li {
    margin-bottom: 6px;
    line-height: 1.8;
}

.dark-single-content-full blockquote {
    border-left: 4px solid var(--dark-accent);
    padding: 12px 24px;
    margin: 16px 0;
    background: rgba(0, 212, 255, 0.04);
    border-radius: 0 var(--dark-radius) var(--dark-radius) 0;
    color: var(--dark-text-secondary);
}

/* ===== 上下篇导航 ===== */
.dark-single-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 50px;
    padding-top: 30px;
    border-top: 1px solid var(--dark-border);
}

.dark-single-nav a {
    display: inline-block;
    padding: 10px 24px;
    background: var(--dark-bg-card);
    color: var(--dark-text-secondary);
    border: 1px solid var(--dark-border);
    border-radius: 50px;
    font-size: 14px;
    text-decoration: none;
    transition: var(--dark-transition);
}

.dark-single-nav a:hover {
    color: var(--dark-text);
    border-color: var(--dark-accent);
    background: var(--dark-accent-glow);
}

/* ===== 证书详情特殊 ===== */
.dark-single .dark-single-image img {
    height: 420px;
}

/* ===== 响应式 ===== */
@media (max-width: 992px) {
    .dark-single-layout {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .dark-single-image img {
        height: 320px;
    }

    .dark-single-content-full {
        padding: 30px 24px;
    }
}

@media (max-width: 768px) {
    .dark-single {
        padding: 100px 0 60px;
    }

    .dark-single-title {
        font-size: 28px;
    }

    .dark-single-image img {
        height: 240px;
    }

    .dark-single-content {
        padding: 24px 20px;
    }

    .dark-single-content-full {
        padding: 24px 16px;
    }

    .dark-single-content-full h2 {
        font-size: 24px;
    }

    .dark-single-content-full h3 {
        font-size: 20px;
    }

    .dark-single-nav {
        flex-direction: column;
        gap: 12px;
        align-items: center;
    }

    .dark-single-nav a {
        width: 100%;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .dark-single-title {
        font-size: 24px;
    }

    .dark-single-image img {
        height: 200px;
    }

    .dark-single-content {
        padding: 18px 16px;
    }
}