:root{--bg: #f9f7f4;--surface: #ffffff;--text: #2c2a28;--text-secondary: #7a7570;--text-muted: #b0aaa3;--accent: #b8784e;--accent-hover: #9e6540;--border: #e8e4de;--code-bg: #f1ede7;--font-serif: "Cormorant Garamond", "Songti SC", "STSong", Georgia, "Times New Roman", serif;--font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", sans-serif;--font-mono: "SF Mono", "Monaco", "Menlo", "Consolas", monospace;--content-width: 720px;--wide-width: 960px;--header-height: 64px;--ease: cubic-bezier(.25, .1, .25, 1)}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:var(--font-sans);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:var(--bg);color:var(--text);line-height:1.6;font-size:16px}#app{min-height:100vh;display:flex;flex-direction:column}a{color:inherit;text-decoration:none}button{font-family:inherit;cursor:pointer}@keyframes pageIn{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.header{border-bottom:1px solid var(--border);background:var(--surface);position:sticky;top:0;z-index:100}.header-inner{max-width:1200px;margin:0 auto;padding:0 40px;height:var(--header-height);display:flex;justify-content:space-between;align-items:center}.logo{font-family:var(--font-serif);font-size:1.5rem;font-weight:600;color:var(--text);letter-spacing:.04em;transition:color .2s var(--ease)}.logo:hover{color:var(--accent)}.menu-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;background:none;border:none;padding:8px;z-index:101}.menu-toggle span{display:block;width:20px;height:1.5px;background:var(--text);transition:all .3s var(--ease);transform-origin:center}.menu-toggle.active span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}.menu-toggle.active span:nth-child(2){opacity:0}.menu-toggle.active span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}.nav{display:flex;align-items:center;gap:32px}.nav-link{color:var(--text-secondary);font-size:.9rem;letter-spacing:.02em;transition:color .2s var(--ease);position:relative}.nav-link:hover{color:var(--accent)}.nav-link:after{content:"";position:absolute;bottom:-2px;left:0;width:0;height:1px;background:var(--accent);transition:width .3s var(--ease)}.nav-link:hover:after{width:100%}.nav-user{color:var(--accent);font-size:.85rem;font-weight:500}.main{flex:1;width:100%}@media(max-width:768px){.header-inner{padding:0 24px}.menu-toggle{display:flex}.nav{position:absolute;top:var(--header-height);left:0;right:0;background:var(--surface);border-bottom:1px solid var(--border);flex-direction:column;align-items:flex-start;gap:0;padding:0 24px;max-height:0;overflow:hidden;transition:max-height .3s var(--ease),padding .3s var(--ease)}.nav.open{max-height:300px;padding:20px 24px;gap:18px}.nav-link:after{display:none}}