:root{--bg: #f4f5f8;--surface: #ffffff;--border: #e3e6ec;--text: #1d2230;--muted: #7a8194;--primary: #4f7cff;--primary-dark: #3b64d8;--danger: #e5484d;--green: #2f9e44;--radius: 10px;--shadow: 0 1px 3px rgba(24, 34, 68, .08)}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:var(--bg);color:var(--text);font-size:14px;line-height:1.45}h1{font-size:22px;margin:0}h3{font-size:15px;margin:0 0 10px}h4{font-size:14px;margin:0 0 10px}a{color:var(--primary);text-decoration:none}.muted{color:var(--muted)}.strong{font-weight:600}.nowrap{white-space:nowrap}.topbar{background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:50}.topbar-inner{max-width:1100px;margin:0 auto;padding:0 20px;height:54px;display:flex;align-items:center;gap:28px}.brand{font-weight:700;font-size:15px;color:var(--text);display:flex;align-items:center;gap:8px}.brand-mark{background:var(--primary);color:#fff;width:26px;height:26px;border-radius:7px;display:inline-flex;align-items:center;justify-content:center;font-size:15px}.main-nav{display:flex;gap:4px;flex:1}.main-nav a{padding:6px 12px;border-radius:7px;color:var(--muted);font-weight:500}.main-nav a:hover{background:var(--bg);color:var(--text)}.main-nav a.active{background:#eef2ff;color:var(--primary)}.user-box{display:flex;align-items:center;gap:10px}.user-name{font-weight:600}.container{max-width:1100px;margin:0 auto;padding:24px 20px 60px}.btn{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border-radius:8px;border:1px solid var(--border);background:var(--surface);color:var(--text);font-size:13px;font-weight:500;cursor:pointer;transition:background .12s,border-color 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