:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--background:#f6f7f9;--foreground:#1d2433;--muted:#657085;--border:#d9dee8;--panel:#fff;--primary:#176b87;--primary-dark:#0f4d63;--danger:#b42318}*{box-sizing:border-box}body{background:var(--background);color:var(--foreground);margin:0;font-family:Arial,Microsoft YaHei,sans-serif}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit}.shell{min-height:100vh}.topbar{border-bottom:1px solid var(--border);background:#fff;justify-content:space-between;align-items:center;gap:20px;padding:14px 28px;display:flex}.brand{font-size:18px;font-weight:700}.nav{align-items:center;gap:10px;display:flex}.nav a,.link-button,.button{border:1px solid var(--border);color:var(--foreground);cursor:pointer;background:#fff;border-radius:6px;align-items:center;min-height:38px;padding:8px 13px;display:inline-flex}.button.primary{background:var(--primary);border-color:var(--primary);color:#fff}.button.primary:hover{background:var(--primary-dark)}.button.danger{color:var(--danger);border-color:#f1b8b3}.main{max-width:980px;margin:0 auto;padding:30px 20px 56px}.panel,.login-box{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:24px}.login-page{justify-content:center;align-items:center;min-height:100vh;padding:20px;display:flex}.login-box{width:min(420px,100%)}.header-row{justify-content:space-between;align-items:center;gap:16px;margin-bottom:18px;display:flex}h1{margin:0;font-size:26px;line-height:1.2}h2{margin:0 0 18px;font-size:18px}.muted{color:var(--muted)}.form{gap:16px;display:grid}.field{gap:7px;display:grid}.field span{color:#354052;font-size:14px;font-weight:600}input,textarea{border:1px solid var(--border);border-radius:6px;width:100%;padding:11px 12px}textarea{resize:vertical;min-height:320px}.error{color:var(--danger);background:#fff1f0;border:1px solid #ffccc7;border-radius:6px;padding:10px 12px}.success{color:#116149;background:#eef8f3;border:1px solid #b7e4cd;border-radius:6px;padding:10px 12px}.diary-list{gap:10px;display:grid}.diary-item{border:1px solid var(--border);border-radius:8px;grid-template-columns:1fr auto;align-items:center;gap:12px;padding:15px;display:grid}.diary-title{margin-bottom:5px;font-weight:700}.actions{flex-wrap:wrap;align-items:center;gap:10px;display:flex}@media (max-width:640px){.topbar,.header-row,.diary-item{align-items:stretch;display:grid}.nav,.actions{justify-content:start}}