:root{--bg: #f7f7f5;--card: #ffffff;--text: #1f2328;--muted: #6a737d;--accent: #0a66c2;--border: #e5e7eb;--danger: #d1242f}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--text);line-height:1.7}.container{max-width:760px;margin:0 auto;padding:0 20px}.navbar{position:sticky;top:0;z-index:10;background:#ffffffeb;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}.nav-inner{max-width:760px;margin:0 auto;padding:0 20px;height:56px;display:flex;align-items:center;justify-content:space-between}.brand{font-size:18px;font-weight:700;color:var(--text);text-decoration:none;letter-spacing:.5px}.nav-links{display:flex;gap:24px}.nav-links a{color:var(--muted);text-decoration:none;font-size:15px;transition:color .2s}.nav-links a:hover{color:var(--accent)}.nav-toggle{display:none;background:none;border:none;font-size:20px;cursor:pointer;color:var(--text)}@media (max-width: 560px){.nav-toggle{display:block}.nav-links{display:none;position:absolute;top:56px;left:0;right:0;background:#fff;flex-direction:column;padding:12px 20px;border-bottom:1px solid var(--border);gap:12px}.nav-links.open{display:flex}}.page{padding-top:32px;padding-bottom:48px;min-height:calc(100vh - 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