/* style.css - 中国色 · 宣纸风格全局样式 */
:root {
    --paper:    #f5f0e8;
    --paper-2:  #ede8da;
    --ink:      #2a2318;
    --ink-2:    #4a3f2f;
    --ink-3:    #7a6e5a;
    --ink-4:    #b0a490;
    --line:     #d4cab8;
    --line-2:   #e5dece;
    --accent:   #8b2020;
    --gold:     #9a7e3e;
    --serif:    'Noto Serif SC', 'Source Han Serif CN', 'STSong', Georgia, serif;
    --xiaowei:  'ZCOOL XiaoWei', 'STSong', serif;
    --mono:     'SF Mono', 'Fira Code', 'Courier New', monospace;
}

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

body {
    background: var(--paper);
    font-family: var(--serif);
    color: var(--ink);
    min-height: 100vh;
    background-image:
        radial-gradient(ellipse at 20% 30%, rgba(210,195,160,0.15) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 70%, rgba(180,165,130,0.10) 0%, transparent 60%),
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='400' height='400'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='400' height='400' filter='url(%23n)' opacity='0.025'/%3E%3C/svg%3E");
    line-height: 1.6;
}

/* 主容器 - 文章页可复用 */
.container {
    max-width: 860px;
    margin: 2rem auto;
    padding: 2rem 2rem 3rem;
    background: rgba(245,240,232,0.6);
    backdrop-filter: blur(2px);
    border: 1px solid var(--line);
    box-shadow: 0 4px 20px rgba(0,0,0,0.02);
}

/* 文章头部 */
.article-header {
    text-align: center;
    border-bottom: 1px dashed var(--line-2);
    margin-bottom: 2rem;
    padding-bottom: 1.2rem;
}
.article-title {
    font-family: var(--xiaowei);
    font-size: 2rem;
    font-weight: 400;
    letter-spacing: 0.2em;
    color: var(--ink);
    margin-bottom: 0.75rem;
}
.article-meta {
    font-size: 0.7rem;
    color: var(--ink-4);
    letter-spacing: 0.1em;
    display: flex;
    justify-content: center;
    gap: 1.2rem;
}
.article-meta span {
    display: inline-block;
}

/* 正文区域 */
.article-content {
    font-size: 1rem;
    color: var(--ink-2);
}
.article-content p {
    margin: 1.2em 0;
    /*text-indent: 2em;*/
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    font-weight: 400;
    color: #1e1e2a;
}
.article-content h2 {
    font-family: var(--xiaowei);
    font-size: 1.4rem;
    font-weight: 400;
    margin: 1.6em 0 0.6em;
    letter-spacing: 0.1em;
    color: var(--ink);
    border-left: 4px solid var(--gold);
    padding-left: 0.8rem;
}
.article-content h3 {
    font-size: 1.1rem;
    font-weight: 500;
    margin: 1.2em 0 0.4em;
    color: var(--ink-2);
}
.article-content blockquote {
    margin: 1em 2em;
    padding: 0.6em 1.2em;
    border-left: 3px solid var(--gold);
    background: rgba(154,126,62,0.08);
    font-style: italic;
    color: var(--ink-3);
}
.article-content ul, .article-content ol {
    margin: 0.8em 0 0.8em 2.5em;
}
.article-content li {
    margin: 0.3em 0;
}
.article-content a {
    color: var(--accent);
    text-decoration: none;
    border-bottom: 1px dotted var(--accent);
}
.article-content a:hover {
    border-bottom: 1px solid var(--accent);
}
.article-content img {
    max-width: 100%;
    height: auto;
    margin: 1.5rem 0;
    border: 1px solid var(--line);
    box-shadow: 2px 2px 8px rgba(0,0,0,0.05);
}
.article-content hr {
    margin: 2rem 0;
    border: none;
    height: 1px;
    background: linear-gradient(to right, var(--line-2), transparent);
}

/* 返回首页链接 */
.back-home {
    margin-top: 3rem;
    text-align: center;
}
.back-home a {
    font-family: var(--serif);
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    color: var(--ink-4);
    text-decoration: none;
    border: 1px solid var(--line);
    padding: 0.3rem 1.2rem;
    transition: all 0.2s;
}
.back-home a:hover {
    border-color: var(--gold);
    color: var(--accent);
    background: var(--paper-2);
}

/* 页脚 */
.footer-note {
    text-align: center;
    margin-top: 2.5rem;
    font-size: 0.6rem;
    color: var(--ink-4);
    letter-spacing: 0.2em;
    border-top: 1px solid var(--line-2);
    padding-top: 1.5rem;
}

/* 响应式 */
@media (max-width: 700px) {
    .container { margin: 1rem; padding: 1.2rem; }
    .article-title { font-size: 1.6rem; }
    .article-content { font-size: 0.9rem; }
    .article-content blockquote { margin: 0.8em 1em; }
}