/* 深度优化版全局样式表 style.css - 包含 Phase 3 进阶组件 */
:root {
    --bg-color: #050b14;
    --bg-alt: #0a1324;
    --text-main: #e2e8f0;
    --text-muted: #94a3b8;
    --primary: #ffffff;
    --accent: #d4af37;
    --accent-hover: #f1cd5a;
    --card-bg: #111b2f;
    --border-color: #1e293b;
    --shadow: 0 15px 35px rgba(0,0,0,0.4);
    --radius: 6px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

.container { width: 90%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ======== Header ======== */
header {
    background-color: rgba(5, 11, 20, 0.95);
    border-bottom: 1px solid var(--border-color);
    padding: 1.2rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}
.header-inner { display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 1.75rem; font-weight: 800; color: var(--accent); text-decoration: none; letter-spacing: 1px; }
nav ul { list-style: none; display: flex; gap: 30px; }
nav a { color: var(--text-main); text-decoration: none; font-weight: 600; font-size: 0.95rem; transition: var(--transition); }
nav a:hover { color: var(--accent); }

/* ======== Typography ======== */
h1, h2, h3, h4 { color: var(--primary); line-height: 1.3; margin-bottom: 1.2rem; }
h2 { font-size: 2.2rem; }
h3 { font-size: 1.5rem; }
p { margin-bottom: 1.5rem; color: var(--text-muted); font-size: 1.05rem; }
a { color: var(--accent); transition: var(--transition); }
a:hover { color: var(--accent-hover); }

/* ======== Breadcrumb ======== */
.breadcrumb { margin-bottom: 2rem; font-size: 0.9rem; color: var(--text-muted); }
.breadcrumb a { color: var(--text-main); text-decoration: none; font-weight: 500; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { margin: 0 0.5rem; color: #475569; }

/* ======== Buttons ======== */
.btn {
    display: inline-block;
    background-color: var(--accent);
    color: #000;
    padding: 0.8rem 2rem;
    border-radius: var(--radius);
    text-decoration: none;
    font-weight: 700;
    font-size: 1rem;
    transition: var(--transition);
    border: 2px solid var(--accent);
    cursor: pointer;
    text-align: center;
}
.btn:hover { background-color: transparent; color: var(--accent); }
.btn-outline { background-color: transparent; color: var(--accent); }
.btn-outline:hover { background-color: var(--accent); color: #000; }

/* ======== Layout Modules ======== */
.hero { position: relative; padding: 8rem 0 6rem; text-align: center; background: linear-gradient(to bottom, rgba(5, 11, 20, 0.2), var(--bg-color)), url('../images/anzo_about_bg.webp') no-repeat center center/cover; }
.hero h1 { font-size: 3.5rem; max-width: 900px; margin: 0 auto 1.5rem; }
.hero p { font-size: 1.3rem; max-width: 700px; margin: 0 auto 2.5rem; }

.section { padding: 5rem 0; }
.section-alt { background-color: var(--bg-alt); }
.section-title { text-align: center; margin-bottom: 4rem; }

.split-layout { display: flex; align-items: center; gap: 4rem; margin-bottom: 4rem; }
.split-layout.reverse { flex-direction: row-reverse; }
.split-text, .split-image { flex: 1; }
.split-image img { width: 100%; border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid var(--border-color); }

.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; }
.card { background-color: var(--card-bg); padding: 2.5rem 2rem; border-radius: var(--radius); border: 1px solid var(--border-color); transition: var(--transition); }
.card:hover { transform: translateY(-5px); border-color: var(--accent); box-shadow: var(--shadow); }
.card h3 { color: var(--accent); margin-bottom: 1rem; }

.data-table { width: 100%; border-collapse: collapse; margin: 2rem 0; background-color: var(--card-bg); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border-color); }
.data-table th, .data-table td { padding: 1.2rem; text-align: left; border-bottom: 1px solid var(--border-color); }
.data-table th { background-color: rgba(255,255,255,0.05); color: var(--accent); font-weight: 700; }
.data-table tr:hover { background-color: rgba(255,255,255,0.02); }

.stats-bar { display: flex; justify-content: space-around; background-color: var(--card-bg); padding: 3rem 0; border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color); }
.stat-item { text-align: center; }
.stat-num { font-size: 3rem; font-weight: 800; color: var(--accent); line-height: 1; margin-bottom: 0.5rem; }
.stat-desc { font-size: 1rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }

.cta-section { text-align: center; padding: 6rem 0; background: linear-gradient(45deg, var(--bg-color), var(--card-bg)); border-top: 1px solid var(--accent); }
.cta-section h2 { font-size: 2.5rem; }

/* ======== News Grid V2 ======== */
.news-grid-v2 { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 2rem; margin-top: 2rem; }
.news-card-v2 { background: var(--card-bg); border: 1px solid var(--border-color); border-radius: var(--radius); overflow: hidden; transition: var(--transition); display: flex; flex-direction: column; }
.news-card-v2:hover { transform: translateY(-5px); border-color: var(--accent); box-shadow: var(--shadow); }
.news-card-v2 .news-img { height: 180px; background-size: cover; background-position: center; border-bottom: 1px solid var(--border-color); }
.news-card-v2 .news-content { padding: 1.5rem; flex: 1; display: flex; flex-direction: column; }
.news-tag { display: inline-block; font-size: 0.75rem; background: rgba(212, 175, 55, 0.1); color: var(--accent); padding: 0.2rem 0.6rem; border-radius: 4px; margin-bottom: 0.8rem; font-weight: 600; text-transform: uppercase; border: 1px solid rgba(212, 175, 55, 0.3); align-self: flex-start; }
.news-card-v2 a.title { color: var(--primary); font-size: 1.15rem; text-decoration: none; font-weight: 700; margin-bottom: 0.8rem; line-height: 1.5; transition: var(--transition); }
.news-card-v2 a.title:hover { color: var(--accent); }
.news-desc { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 1rem; flex: 1; line-height: 1.6; }
.news-meta { font-size: 0.8rem; color: #64748b; border-top: 1px solid var(--border-color); padding-top: 1rem; display: flex; justify-content: space-between; }

/* ======== Sticky CTA (Mobile) ======== */
.sticky-cta { display: none; position: fixed; bottom: 0; left: 0; width: 100%; background: rgba(17, 27, 47, 0.95); backdrop-filter: blur(10px); border-top: 2px solid var(--accent); padding: 12px 20px; z-index: 9999; box-shadow: 0 -5px 20px rgba(0,0,0,0.5); text-align: center; }
.sticky-cta .btn { width: 100%; padding: 0.8rem; font-size: 1.1rem; }

/* ======== Phase 4: FAQ, Glossary, Author Bio ======== */
details { background: var(--card-bg); border: 1px solid var(--border-color); border-radius: var(--radius); margin-bottom: 1rem; overflow: hidden; transition: var(--transition); }
summary { padding: 1.2rem; cursor: pointer; font-weight: 600; font-size: 1.1rem; color: var(--primary); list-style: none; outline: none; position: relative; }
summary::-webkit-details-marker { display: none; }
summary::after { content: '+'; position: absolute; right: 1.2rem; top: 1.2rem; color: var(--accent); font-size: 1.5rem; transition: transform 0.3s; }
details[open] summary::after { transform: rotate(45deg); }
details[open] summary { border-bottom: 1px solid var(--border-color); }
.faq-content { padding: 1.2rem; color: var(--text-muted); line-height: 1.6; }

.glossary-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 2rem; margin-top: 2rem; }
.glossary-item { background: var(--card-bg); padding: 1.5rem; border-left: 3px solid var(--accent); border-radius: 4px; }
.glossary-item h4 { color: var(--accent); margin-bottom: 0.5rem; }

.author-bio { margin-top: 3rem; margin-bottom: 2rem; padding: 1.5rem; background: var(--bg-alt); border: 1px solid var(--border-color); border-radius: var(--radius); display: flex; align-items: center; gap: 1.5rem; }
.author-avatar { width: 60px; height: 60px; min-width: 60px; border-radius: 50%; background: var(--accent); color: #000; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 1.5rem; }
.author-info h4 { margin-bottom: 0.2rem; color: var(--primary); font-size: 1.1rem; }
.author-info p { margin-bottom: 0; font-size: 0.9rem; color: var(--text-muted); }

/* ======== Footer ======== */
footer { background-color: #02050a; padding: 4rem 0 2rem; border-top: 1px solid var(--border-color); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 3rem; margin-bottom: 3rem; }
.footer-col h4 { color: var(--primary); margin-bottom: 1.5rem; }
.footer-col ul { list-style: none; padding: 0; }
.footer-col ul li { margin-bottom: 0.8rem; }
.footer-col ul a { color: var(--text-muted); text-decoration: none; }
.footer-col ul a:hover { color: var(--accent); }
.footer-bottom { text-align: center; padding-top: 2rem; border-top: 1px solid var(--border-color); color: #475569; font-size: 0.85rem; }

/* ======== Responsive ======== */
@media (max-width: 768px) {
    .split-layout { flex-direction: column; gap: 2rem; }
    .split-layout.reverse { flex-direction: column; }
    .footer-grid { grid-template-columns: 1fr; }
    .hero h1 { font-size: 2.5rem; }
    .stats-bar { flex-direction: column; gap: 2rem; }
    .sticky-cta { display: block; }
    body { padding-bottom: 75px; } /* Prevent content overlap by sticky footer */
    .author-bio { flex-direction: column; text-align: center; }
}