:root{--bg: #0b0d12;--bg-elevated: #121620;--bg-card: #161b27;--bg-card-hover: #1c2233;--border: #232a3a;--border-strong: #2f3950;--text: #e7ecf5;--text-muted: #9aa3b8;--text-dim: #6c7691;--accent: #f4b860;--accent-soft: rgba(244, 184, 96, .15);--accent-strong: #ffd187;--danger: #e26d6d;--success: #7bd88f;--radius: 14px;--radius-sm: 8px;--shadow: 0 12px 30px -18px rgba(0, 0, 0, .7);--font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;--font-display: "Cinzel", "Inter", serif}*{box-sizing:border-box}html,body{margin:0;padding:0;background:radial-gradient(circle at 20% 0%,#1a2030 0%,var(--bg) 55%) fixed;color:var(--text);font-family:var(--font-sans);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}a{color:var(--accent-strong);text-decoration:none;transition:color .15s ease}a:hover{color:var(--accent)}.container{width:min(1100px,92%);margin:0 auto}.site-header{position:sticky;top:0;z-index:20;backdrop-filter:blur(12px);background:#0b0d12b3;border-bottom:1px solid var(--border)}.header-inner{display:flex;align-items:center;justify-content:space-between;gap:1.5rem;padding:.9rem 0}.brand{display:inline-flex;align-items:center;gap:.6rem;font-weight:700;font-size:1.05rem;letter-spacing:.01em;color:var(--text)}.brand:hover{color:var(--accent-strong)}.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:8px;background:var(--accent-soft);color:var(--accent-strong);font-size:1.1rem}.site-nav{display:flex;gap:1.4rem;margin-left:auto}.site-nav a{color:var(--text-muted);font-weight:500}.site-nav a:hover{color:var(--text)}.lang-switcher{display:inline-flex;align-items:center;gap:.4rem;padding:.4rem .85rem;border:1px solid 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