:root{--bg:#f4f7f2;--surface:#fff;--surface-strong:#eef4ea;--ink:#172017;--muted:#657163;--line:#dce5d7;--accent:#236b4a;--accent-dark:#174a35;--accent-soft:#dcefe5;--danger:#b3261e;--shadow:0 24px 70px #1f2f251f}*{box-sizing:border-box}html{background:var(--bg);min-width:320px}body{min-height:100vh;color:var(--ink);background:linear-gradient(135deg, #236b4a14, transparent 36%), repeating-linear-gradient(90deg, #17201709 0 1px, transparent 1px 96px), var(--bg);text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;margin:0;font-family:Avenir Next,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;font-size:15px;line-height:1.55}button,input,textarea{font:inherit}button{cursor:pointer;border:0}button:disabled{cursor:not-allowed;opacity:.55}a{color:inherit;text-decoration:none}#app{min-height:100vh}.login-page{place-items:center;min-height:100vh;padding:24px;display:grid}.login-panel{border:1px solid var(--line);width:min(100%,420px);box-shadow:var(--shadow);background:#ffffffe6;border-radius:8px;padding:34px}.brand-mark,.sidebar-logo{color:#fff;background:var(--accent);letter-spacing:0;border-radius:8px;place-items:center;width:56px;height:56px;font-weight:800;display:grid}.login-copy{margin:30px 0 26px}.eyebrow{color:var(--accent);letter-spacing:.08em;text-transform:uppercase;margin:0 0 6px;font-size:12px;font-weight:800}h1,h2,p{margin-top:0}h1{margin-bottom:8px;font-size:32px;font-weight:800;line-height:1.15}h2{margin-bottom:8px;font-size:20px;font-weight:800}.login-copy p:last-child,.placeholder-panel p{color:var(--muted);margin-bottom:0}.login-form{gap:16px;display:grid}label,.field-header{gap:8px;display:grid}label span,.field-header{color:var(--muted);font-size:13px;font-weight:700}input,textarea{border:1px solid var(--line);width:100%;color:var(--ink);background:#fbfdfa;border-radius:8px;outline:none;transition:border-color .18s,box-shadow .18s,background 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