:root{--color-bg: #f7f3ee;--color-surface: #ffffff;--color-text: #1a1a1a;--color-text-soft: rgba(26, 26, 26, .65);--color-accent: #8b6f4e;--color-accent-light: #c4a882;--color-accent-dark: #5a4733;--color-border: rgba(26, 26, 26, .08);--color-hero-overlay: rgba(26, 26, 26, .55);--font-sans: "Inter", "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;--font-serif: "Noto Serif SC", "Georgia", serif;--radius-sm: 8px;--radius-md: 16px;--radius-lg: 24px;--shadow-card: 0 4px 20px rgba(26, 26, 26, .06);--shadow-card-hover: 0 12px 40px rgba(26, 26, 26, .1);--transition: .3s cubic-bezier(.25, .46, .45, .94)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:var(--font-sans);background:var(--color-bg);color:var(--color-text);line-height:1.6;-webkit-font-smoothing:antialiased}.nav{position:fixed;top:0;left:0;right:0;z-index:100;background:#f7f3eed9;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid 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