:root {
    --bg-base: #0f111a;
    --bg-panel: #181b26;
    --bg-panel-hover: #1f2333;
    --primary: #d4af37; /* 典雅金 */
    --primary-light: #f2ce5e;
    --secondary: #00d2ff; /* 科技青 */
    --text-main: #e2e8f0;
    --text-muted: #8b949e;
    --border-color: rgba(212, 175, 55, 0.15);
    --border-light: rgba(255, 255, 255, 0.05);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; background-color: var(--bg-base); color: var(--text-main); line-height: 1.6; font-size: 16px; }
a { text-decoration: none; color: inherit; transition: all 0.3s ease; }
ul, ol { list-style: none; }

/* Layout */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
header { background-color: rgba(15, 17, 26, 0.95); backdrop-filter: blur(8px); border-bottom: 1px solid var(--border-light); position: sticky; top: 0; z-index: 100; }
.header-inner { display: flex; justify-content: space-between; align-items: center; height: 70px; }
.logo { font-size: 22px; font-weight: 700; color: var(--primary); letter-spacing: 1px; display: flex; align-items: center; gap: 8px; }
.logo span { color: var(--secondary); font-size: 14px; border: 1px solid var(--secondary); padding: 2px 6px; border-radius: 4px; }
.nav-menu { display: flex; gap: 30px; }
.nav-menu a { font-size: 15px; font-weight: 500; color: var(--text-main); }
.nav-menu a:hover { color: var(--primary); }

/* Hero Tool Section */
.hero { padding: 60px 0; background: radial-gradient(circle at 50% 0%, rgba(212, 175, 55, 0.08) 0%, transparent 60%); border-bottom: 1px solid var(--border-light); }
.hero-title { text-align: center; margin-bottom: 20px; }
.hero-title h1 { font-size: 36px; margin-bottom: 15px; background: linear-gradient(to right, var(--primary), var(--primary-light)); -webkit-background-clip: text; color: transparent; }
.hero-title p { color: var(--text-muted); font-size: 16px; max-width: 600px; margin: 0 auto; }

/* Calculator UI (No Images, Pure CSS) */
.calc-box { max-width: 800px; margin: 40px auto 0; background: var(--bg-panel); border: 1px solid var(--border-color); border-radius: 12px; padding: 30px; box-shadow: 0 10px 30px rgba(0,0,0,0.5); }
.calc-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px; margin-bottom: 20px; }
.input-group label { display: block; font-size: 14px; color: var(--text-muted); margin-bottom: 8px; }
.input-group input, .input-group select { width: 100%; padding: 12px; background: var(--bg-base); border: 1px solid var(--border-light); color: var(--text-main); border-radius: 6px; font-size: 15px; outline: none; }
.input-group input:focus, .input-group select:focus { border-color: var(--secondary); }
.btn-calc { width: 100%; padding: 14px; background: linear-gradient(135deg, var(--primary) 0%, #a6841c 100%); color: #000; font-size: 16px; font-weight: 700; border: none; border-radius: 6px; cursor: pointer; transition: 0.3s; }
.btn-calc:hover { box-shadow: 0 0 15px rgba(212, 175, 55, 0.4); transform: translateY(-2px); }

/* Results UI */
.res-panel { margin-top: 25px; padding: 20px; border-top: 1px dashed var(--border-light); display: none; }
.bazi-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; text-align: center; margin-top: 15px; }
.bazi-pillar { background: rgba(0, 210, 255, 0.05); border: 1px solid rgba(0, 210, 255, 0.2); border-radius: 8px; padding: 15px 0; }
.bazi-pillar .label { font-size: 12px; color: var(--text-muted); margin-bottom: 5px; }
.bazi-pillar .value { font-size: 24px; font-weight: 700; color: var(--primary); letter-spacing: 2px; }

/* Content Sections */
.section { padding: 60px 0; border-bottom: 1px solid var(--border-light); }
.section-header { margin-bottom: 40px; display: flex; align-items: flex-end; justify-content: space-between; }
.section-header h2 { font-size: 28px; font-weight: 600; border-left: 4px solid var(--primary); padding-left: 15px; }
.section-header .desc { color: var(--text-muted); font-size: 14px; margin-left: 15px; }
.view-more { font-size: 14px; color: var(--secondary); border-bottom: 1px solid var(--secondary); }

/* Article Cards (No Images, Rich CSS) */
.article-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 20px; }
.card { background: var(--bg-panel); border: 1px solid var(--border-light); border-radius: 10px; padding: 25px; display: flex; flex-direction: column; transition: all 0.3s; position: relative; overflow: hidden; }
.card::before { content: ''; position: absolute; top: 0; left: 0; width: 4px; height: 100%; background: var(--border-light); transition: 0.3s; }
.card:hover { border-color: var(--border-color); transform: translateY(-5px); }
.card:hover::before { background: var(--primary); }
.card-title { font-size: 18px; font-weight: 600; margin-bottom: 12px; line-height: 1.4; }
.card-desc { font-size: 14px; color: var(--text-muted); flex-grow: 1; margin-bottom: 20px; line-height: 1.6; }
.card-meta { display: flex; justify-content: space-between; align-items: center; font-size: 12px; color: var(--text-muted); border-top: 1px solid var(--border-light); padding-top: 15px; }
.card-meta .tag { background: rgba(212, 175, 55, 0.1); color: var(--primary); padding: 3px 8px; border-radius: 4px; }

/* FAQ Styles */
.faq-wrap { display: grid; gap: 15px; }
.faq-item { background: var(--bg-panel); border: 1px solid var(--border-light); padding: 20px; border-radius: 8px; }
.faq-q { font-size: 16px; font-weight: 600; color: var(--primary); margin-bottom: 10px; display: flex; align-items: flex-start; gap: 10px; }
.faq-q::before { content: 'Q'; background: var(--primary); color: #000; width: 24px; height: 24px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 12px; flex-shrink: 0; }
.faq-a { font-size: 14px; color: var(--text-muted); line-height: 1.7; padding-left: 34px; }

/* Article Detail Pages */
.article-main { max-width: 800px; margin: 40px auto; }
.article-head { text-align: center; margin-bottom: 40px; }
.article-head h1 { font-size: 32px; margin-bottom: 15px; line-height: 1.4; }
.breadcrumb { font-size: 13px; color: var(--text-muted); margin-bottom: 20px; display: inline-block; background: var(--bg-panel); padding: 8px 15px; border-radius: 20px; }
.breadcrumb a { color: var(--primary); }

/* Rich Text Formatting (No images) */
.rich-text { background: var(--bg-panel); padding: 40px; border-radius: 12px; border: 1px solid var(--border-light); font-size: 16px; line-height: 1.8; color: #d1d5db; }
.rich-text p { margin-bottom: 20px; }
.rich-text h2 { font-size: 22px; color: #fff; margin: 40px 0 20px; border-left: 4px solid var(--secondary); padding-left: 15px; }
.rich-text h3 { font-size: 18px; color: var(--primary); margin: 30px 0 15px; }
.rich-text blockquote { background: rgba(0, 210, 255, 0.05); border: 1px solid rgba(0, 210, 255, 0.2); border-left: 4px solid var(--secondary); padding: 20px; margin: 30px 0; border-radius: 0 8px 8px 0; font-style: normal; }
.rich-text .highlight-box { background: rgba(212, 175, 55, 0.05); border: 1px dashed var(--primary); padding: 20px; margin: 30px 0; border-radius: 8px; text-align: center; }

/* Internal Links block */
.internal-links { margin-top: 50px; border-top: 1px solid var(--border-light); padding-top: 30px; }
.internal-links h3 { color: #fff; margin-bottom: 20px; font-size: 18px; }
.internal-list { display: flex; flex-direction: column; gap: 10px; }
.internal-list a { display: block; padding: 15px; background: rgba(255,255,255,0.02); border-radius: 6px; border: 1px solid var(--border-light); color: var(--text-muted); }
.internal-list a:hover { background: rgba(255,255,255,0.05); color: var(--primary); border-color: var(--border-color); }

footer { text-align: center; padding: 40px 20px; margin-top: 60px; border-top: 1px solid var(--border-light); color: var(--text-muted); font-size: 14px; background: #0b0c13; }

/* Responsive */
@media (max-width: 768px) {
    .nav-menu { display: none; } /* Simplified mobile header */
    .hero-title h1 { font-size: 26px; }
    .rich-text { padding: 20px; }
    .bazi-grid { grid-template-columns: 1fr 1fr; }
}