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

:root {
    --primary: #A0785C;
    --primary-dark: #7A5A45;
    --primary-light: #F5EDE6;
    --accent: #C4A070;
    --accent-light: #F8F0E4;
    --rose: #D4B8A8;
    --rose-light: #FDF8F4;
    --bg: #FCFAF8;
    --white: #FFFFFF;
    --dark: #2D2D2D;
    --text: #5A4F48;
    --text-light: #8C8078;
    --border: #E8E0D8;
}

body {
    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", -apple-system, sans-serif;
    line-height: 1.9; color: var(--text); background: var(--bg);
    -webkit-font-smoothing: antialiased;
}

nav {
    position: fixed; top: 0; width: 100%;
    background: rgba(255,255,255,0.92); backdrop-filter: blur(20px);
    z-index: 1000; border-bottom: 1px solid var(--border);
}
.nav-container { max-width: 1200px; margin: 0 auto; padding: 1rem 2rem; display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 1.4rem; font-weight: 400; color: var(--dark); letter-spacing: 1px; text-decoration: none; }
.logo strong { color: var(--primary); font-weight: 600; }
.logo span { color: var(--accent); font-weight: 300; }
.nav-links { display: flex; gap: 2.5rem; list-style: none; }
.nav-links a { text-decoration: none; color: var(--text-light); font-size: 0.9rem; letter-spacing: 1px; transition: color 0.3s; }
.nav-links a:hover { color: var(--primary); }

.article-container { max-width: 800px; margin: 0 auto; padding: 7rem 2rem 4rem; }
.article-header { text-align: center; margin-bottom: 3rem; padding-bottom: 2rem; border-bottom: 1px solid var(--border); }
.article-header .date { font-size: 0.8rem; color: var(--accent); letter-spacing: 2px; margin-bottom: 1rem; }
.article-header h1 { font-size: 2rem; color: var(--dark); font-weight: 400; letter-spacing: 2px; line-height: 1.5; }
.article-header .desc { font-size: 1rem; color: var(--text-light); margin-top: 1rem; }

.article-body h2 {
    font-size: 1.3rem; color: var(--primary-dark); font-weight: 500;
    margin: 2.5rem 0 1rem; padding-left: 1rem; border-left: 3px solid var(--accent); letter-spacing: 1px;
}
.article-body h3 { font-size: 1.1rem; color: var(--dark); font-weight: 500; margin: 1.8rem 0 0.8rem; }
.article-body p { margin-bottom: 1.2rem; font-size: 1rem; color: var(--text); line-height: 2; }
.article-body ul, .article-body ol { margin: 1rem 0 1.5rem 1.5rem; }
.article-body li { margin-bottom: 0.5rem; line-height: 1.8; }
.article-body strong { color: var(--primary-dark); }
.article-body .flow-chart {
    background: var(--primary-light); border-radius: 12px; padding: 1.5rem 2rem;
    margin: 1.5rem 0; font-size: 0.9rem; line-height: 2; border: 1px solid var(--border);
}

.blog-table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; font-size: 0.9rem; }
.blog-table th { background: var(--primary-light); padding: 0.8rem 1rem; text-align: left; font-weight: 500; color: var(--primary-dark); }
.blog-table td { padding: 0.8rem 1rem; border-bottom: 1px solid var(--border); }

.cta-section {
    margin-top: 4rem; padding: 2.5rem; background: linear-gradient(165deg, var(--primary-light) 0%, var(--rose-light) 100%);
    border-radius: 16px; text-align: center; border: 1px solid var(--border);
}
.cta-section h3 { font-size: 1.2rem; color: var(--dark); font-weight: 500; margin-bottom: 0.8rem; }
.cta-section p { color: var(--text-light); margin-bottom: 1.2rem; font-size: 0.95rem; }
.cta-btn {
    display: inline-block; padding: 0.8rem 2.5rem; background: var(--primary); color: #fff; text-decoration: none;
    border-radius: 30px; letter-spacing: 1px; font-size: 0.9rem; transition: background 0.3s;
}
.cta-btn:hover { background: var(--primary-dark); }

.back-link { display: inline-block; margin-bottom: 2rem; color: var(--accent); text-decoration: none; font-size: 0.9rem; letter-spacing: 1px; }
.back-link:hover { color: var(--primary); }

footer {
    background: var(--dark); color: rgba(255,255,255,0.6); text-align: center; padding: 2rem;
    font-size: 0.85rem; letter-spacing: 1px;
}
footer a { color: var(--accent); text-decoration: none; }

@media (max-width: 768px) {
    .article-header h1 { font-size: 1.5rem; }
    .nav-links { gap: 1.2rem; }
}