* { margin:0; padding:0; box-sizing:border-box; }
:root {
    --bg:#0d1117; --card:#161b22; --border:#30363d;
    --text:#e6edf3; --muted:#8b949e; --accent:#2f81f7;
    --pos:#3fb950; --neg:#f85149;
}
body { background:var(--bg); color:var(--text); font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif; min-height:100vh; }
a { color:var(--accent); text-decoration:none; }
a:hover { text-decoration:underline; }

/* 登录 */
.login-body { display:flex; align-items:center; justify-content:center; }
.login-card { background:var(--card); border:1px solid var(--border); border-radius:12px; padding:32px; width:92%; max-width:380px; }
.login-card h1 { font-size:22px; margin-bottom:20px; text-align:center; }
.login-card input, .login-card button, .form input, .form select, .form button, .search input, .search button {
    width:100%; padding:12px; margin:8px 0; border-radius:8px; border:1px solid var(--border);
    background:#0d1117; color:var(--text); font-size:15px;
}
.login-card button, .form button, .search button { background:var(--accent); border:none; cursor:pointer; font-weight:600; }
.login-card button:hover, .form button:hover { filter:brightness(1.15); }
.switch { text-align:center; margin-top:14px; color:var(--muted); font-size:14px; }
.alert { background:#3d1d1d; color:#ffb3b3; border:1px solid var(--neg); padding:10px; border-radius:8px; margin-bottom:12px; font-size:14px; }
.alert.ok { background:#12261a; color:#7ee787; border-color:var(--pos); }

/* 顶部栏 */
.topbar { display:flex; justify-content:space-between; align-items:center; padding:14px 20px; background:var(--card); border-bottom:1px solid var(--border); }
.topbar .logo { font-weight:700; font-size:17px; }
.topbar .user { color:var(--muted); font-size:14px; }
.topbar .user a { margin-left:10px; }

.wrap { padding:20px; max-width:1000px; margin:0 auto; }
h2 { margin:22px 0 12px; font-size:19px; }
h3 { margin:16px 0 8px; font-size:16px; }

/* 资产卡片 */
.cards { display:grid; grid-template-columns:repeat(auto-fill,minmax(110px,1fr)); gap:12px; }
.card { background:var(--card); border:1px solid var(--border); border-radius:10px; padding:16px; text-align:center; }
.card .num { font-size:24px; font-weight:700; }
.card.big .num { font-size:30px; color:var(--accent); }
.card .label { color:var(--muted); font-size:13px; margin-top:4px; }

/* 表格 */
.table-wrap { background:var(--card); border:1px solid var(--border); border-radius:10px; overflow-x:auto; }
table { width:100%; border-collapse:collapse; font-size:14px; }
th, td { padding:11px 14px; text-align:left; border-bottom:1px solid var(--border); white-space:nowrap; }
th { color:var(--muted); font-weight:600; background:#0d1117; }
tr:last-child td { border-bottom:none; }
td.pos { color:var(--pos); font-weight:600; }
td.neg { color:var(--neg); font-weight:600; }
td.empty { color:var(--muted); text-align:center; padding:24px; }

/* 表单 */
.panel-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); gap:16px; }
.panel { background:var(--card); border:1px solid var(--border); border-radius:10px; padding:16px; }
.form select, .form input { width:100%; }
.search { display:flex; gap:8px; }
.search input { flex:1; }
.search button { width:auto; }
.btn { display:inline-block; background:var(--accent); color:#fff; padding:6px 12px; border-radius:6px; font-size:13px; }
.btn:hover { text-decoration:none; filter:brightness(1.15); }
.back { font-size:14px; margin-left:10px; }