* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, "Microsoft YaHei", sans-serif; background: #f0f2f5; color: #333; }
a { color: #1677ff; text-decoration: none; }
a:hover { color: #4096ff; }

/* Layout */
.container { max-width: 1200px; margin: 0 auto; padding: 20px; }

/* Header */
.header { background: #fff; box-shadow: 0 2px 8px rgba(0,0,0,.06); padding: 0 20px; position: sticky; top: 0; z-index: 100; }
.header-inner { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; height: 60px; gap: 30px; }
.header h1 { font-size: 20px; color: #1677ff; }
.header h1 a { color: #1677ff; }
.nav { display: flex; gap: 20px; }
.nav a { color: #666; font-size: 15px; padding: 8px 0; border-bottom: 2px solid transparent; }
.nav a:hover, .nav a.active { color: #1677ff; border-bottom-color: #1677ff; }

/* Cards */
.card { background: #fff; border-radius: 8px; padding: 20px; margin-bottom: 16px; box-shadow: 0 1px 4px rgba(0,0,0,.06); }
.card-title { font-size: 16px; font-weight: 600; margin-bottom: 16px; color: #333; display: flex; align-items: center; gap: 8px; }

/* Stats Grid */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin-bottom: 20px; }
.stat-card { background: #fff; border-radius: 8px; padding: 20px; box-shadow: 0 1px 4px rgba(0,0,0,.06); text-align: center; }
.stat-card .num { font-size: 32px; font-weight: 700; color: #1677ff; }
.stat-card .label { font-size: 13px; color: #999; margin-top: 4px; }
.stat-card .sub { font-size: 12px; color: #bbb; margin-top: 2px; }

/* Project Grid */
.project-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.project-card { background: #fff; border-radius: 8px; padding: 20px; box-shadow: 0 1px 4px rgba(0,0,0,.06); border-left: 4px solid #1677ff; position: relative; }
.project-card h3 { font-size: 16px; margin-bottom: 8px; }
.project-card h3 a { color: #333; }
.project-card h3 a:hover { color: #1677ff; }
.project-card .desc { font-size: 13px; color: #888; margin-bottom: 12px; line-height: 1.5; }
.project-card .meta { font-size: 12px; color: #bbb; display: flex; gap: 16px; }
.project-card .actions { position: absolute; top: 16px; right: 16px; display: flex; gap: 8px; }
.project-card .actions a { font-size: 12px; color: #999; }
.project-card .actions a:hover { color: #1677ff; }
.project-card .status-badge { display: inline-block; font-size: 11px; padding: 2px 8px; border-radius: 10px; background: #e6f4ff; color: #1677ff; }

/* Tables */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid #f0f0f0; }
th { background: #fafafa; font-weight: 600; color: #666; font-size: 13px; }
tr:hover td { background: #fafafa; }

/* Forms */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 14px; font-weight: 500; margin-bottom: 6px; color: #555; }
.form-group input, .form-group textarea, .form-group select { 
    width: 100%; padding: 8px 12px; border: 1px solid #d9d9d9; border-radius: 6px; 
    font-size: 14px; transition: border-color .3s; font-family: inherit;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
    outline: none; border-color: #1677ff; box-shadow: 0 0 0 2px rgba(22,119,255,.1);
}
.form-group textarea { min-height: 80px; resize: vertical; }

/* Buttons */
.btn {
    display: inline-block; padding: 8px 20px; font-size: 14px; border-radius: 6px; border: none;
    cursor: pointer; transition: all .3s; text-decoration: none; font-family: inherit;
}
.btn-primary { background: #1677ff; color: #fff; }
.btn-primary:hover { background: #4096ff; }
.btn-danger { background: #ff4d4f; color: #fff; }
.btn-danger:hover { background: #ff7875; }
.btn-success { background: #52c41a; color: #fff; }
.btn-success:hover { background: #73d13d; }
.btn-outline { background: #fff; border: 1px solid #d9d9d9; color: #333; }
.btn-outline:hover { border-color: #1677ff; color: #1677ff; }
.btn-sm { padding: 4px 12px; font-size: 12px; }
.btn + .btn { margin-left: 8px; }
.btn-group { margin-top: 16px; }

/* Alerts */
.alert { padding: 10px 16px; border-radius: 6px; margin-bottom: 16px; font-size: 14px; }
.alert-success { background: #f6ffed; border: 1px solid #b7eb8f; color: #52c41a; }
.alert-error { background: #fff2f0; border: 1px solid #ffccc7; color: #ff4d4f; }

/* Chart placeholder */
.chart-container { width: 100%; height: 300px; position: relative; }

/* Empty state */
.empty { text-align: center; padding: 60px 20px; color: #bbb; }
.empty .icon { font-size: 48px; margin-bottom: 12px; }
.empty p { font-size: 14px; }

/* Tabs */
.tabs { display: flex; gap: 0; border-bottom: 1px solid #f0f0f0; margin-bottom: 20px; }
.tabs a { padding: 10px 20px; font-size: 14px; color: #666; border-bottom: 2px solid transparent; }
.tabs a:hover, .tabs a.active { color: #1677ff; border-bottom-color: #1677ff; }

/* Detail page */
.detail-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.detail-header h2 { font-size: 22px; }
.meta-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-bottom: 20px; }
.meta-item { background: #fafafa; border-radius: 6px; padding: 12px; text-align: center; }
.meta-item .val { font-size: 18px; font-weight: 600; color: #333; }
.meta-item .lbl { font-size: 12px; color: #999; margin-top: 4px; }

/* Record colors */
.record-row { transition: background .3s; }
.record-row .data-value { font-weight: 500; }

/* Mobile */
@media (max-width: 768px) {
    .container { padding: 12px; }
    .header-inner { gap: 15px; }
    .nav a { font-size: 13px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .project-grid { grid-template-columns: 1fr; }
}