/* KMDN - 简洁、可读、移动友好 */
:root{
  --primary:#0d6efd;
  --primary-dark:#0a58ca;
  --accent:#ff7a00;
  --bg:#f6f8fb;
  --card:#ffffff;
  --text:#222831;
  --muted:#6c757d;
  --border:#e5e7eb;
  --danger:#dc3545;
  --success:#198754;
  --warn:#ffb020;
  --radius:10px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:var(--text); background:var(--bg); line-height:1.55; font-size:15px;
}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-dark)}
.container{max-width:1100px;margin:0 auto;padding:0 16px}
.main{padding:18px 16px 60px}

/* 顶栏 */
.topbar{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:50;box-shadow:0 1px 0 rgba(0,0,0,.02)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;height:60px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:700}
.brand:hover{color:var(--text)}
.brand .logo{background:linear-gradient(135deg,var(--primary),#22c1c3);color:#fff;font-weight:800;font-size:16px;padding:6px 10px;border-radius:8px;letter-spacing:1px}
.brand-text{font-size:15px}
.nav{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.nav a{padding:8px 12px;border-radius:6px;color:#333;font-size:14px}
.nav a:hover{background:#eef3ff}
.nav a.active{color:var(--primary);font-weight:600}

/* 按钮 */
.btn{display:inline-block;padding:8px 14px;border-radius:8px;font-size:14px;border:1px solid transparent;cursor:pointer;transition:all .15s}
.btn-primary{background:var(--primary);color:#fff!important}
.btn-primary:hover{background:var(--primary-dark)}
.btn-outline{background:#fff;color:var(--primary)!important;border-color:var(--primary)}
.btn-outline:hover{background:#eef3ff}
.btn-danger{background:var(--danger);color:#fff!important}
.btn-ghost{background:transparent;color:#444!important}
.btn-block{display:block;width:100%;text-align:center;padding:10px 14px}

/* 卡片 */
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:18px;margin-bottom:16px}
.card h2{margin:0 0 12px;font-size:18px}
.card h3{margin:0 0 8px;font-size:16px}

/* Hero */
.hero{background:linear-gradient(135deg,#0b65d8,#22c1c3);color:#fff;border-radius:var(--radius);padding:28px 22px;margin-bottom:18px}
.hero h1{margin:0 0 6px;font-size:22px}
.hero p{margin:0;opacity:.92}
.hero .cta{margin-top:14px;display:flex;gap:10px;flex-wrap:wrap}
.hero .cta .btn{padding:10px 18px}

/* 列表卡片 */
.grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:760px){.grid{grid-template-columns:1fr}}

.post{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:14px;display:flex;flex-direction:column;gap:6px;transition:box-shadow .15s,transform .15s}
.post:hover{box-shadow:0 4px 14px rgba(13,110,253,.08);transform:translateY(-1px)}
.post-title{font-size:16px;font-weight:600;color:#222}
.post-title a{color:inherit}
.post-meta{font-size:12.5px;color:var(--muted);display:flex;gap:10px;flex-wrap:wrap}
.tag{display:inline-block;padding:2px 8px;border-radius:999px;font-size:12px;background:#eef3ff;color:var(--primary)}
.tag-area{background:#eafaf1;color:#0a8a4f}
.tag-need{background:#fff1e6;color:#c0560b}
.tag-helper{background:#e8f1ff;color:#1761c4}
.tag-urgent{background:#ffe0e0;color:#c0392b;font-weight:600}
.post-excerpt{color:#555;font-size:13.5px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* 表单 */
.form-row{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
.form-row label{font-size:13.5px;color:#333;font-weight:600}
.form-row .hint{font-size:12px;color:var(--muted)}
.form-row input[type=text],
.form-row input[type=password],
.form-row select,
.form-row textarea{
  width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;font-size:14px;background:#fff;font-family:inherit
}
.form-row textarea{min-height:140px;resize:vertical}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(13,110,253,.15)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:640px){.form-grid{grid-template-columns:1fr}}
.checkbox{display:flex;align-items:center;gap:8px;font-size:14px}

/* 筛选条 */
.filter{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px;align-items:center;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:10px}
.filter select,.filter input{padding:8px 10px;border:1px solid var(--border);border-radius:8px;font-size:14px;background:#fff}
.filter .grow{flex:1;min-width:200px}

/* Flash */
.flash{padding:10px 14px;border-radius:8px;margin-bottom:14px;font-size:14px}
.flash-success{background:#e7f5ec;color:#1b6e3d;border:1px solid #b8e1c5}
.flash-error{background:#fde9ec;color:#a8242f;border:1px solid #f3b7bf}
.flash-info{background:#e8f1ff;color:#1c4f9c;border:1px solid #b6cef0}

/* 分页 */
.pagination{display:flex;align-items:center;justify-content:center;gap:14px;margin:18px 0}
.pagination a{padding:6px 12px;border:1px solid var(--border);border-radius:6px;color:#333;background:#fff}
.pagination span{color:var(--muted);font-size:13px}

/* 详情 */
.detail h1{margin:0 0 6px;font-size:22px}
.detail .meta{color:var(--muted);font-size:13px;margin-bottom:14px;display:flex;flex-wrap:wrap;gap:10px}
.detail .content{white-space:pre-wrap;line-height:1.75;background:#fff;border:1px solid var(--border);border-radius:8px;padding:14px;margin-bottom:14px}
.contact-box{background:#fffaf3;border:1px solid #ffe1b8;border-radius:8px;padding:14px;margin-bottom:14px}
.contact-box h3{margin:0 0 8px}
.contact-line{margin:4px 0;font-size:15px}

/* 表格 */
table.tbl{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
table.tbl th,table.tbl td{padding:10px 12px;border-bottom:1px solid var(--border);font-size:14px;text-align:left;vertical-align:top}
table.tbl th{background:#f8fafc;font-weight:600;color:#333}
table.tbl tr:last-child td{border-bottom:none}

/* 杂项 */
.muted{color:var(--muted)}
.center{text-align:center}
.right{text-align:right}
.row-actions a{margin-right:8px}
.footer{padding:18px 0 30px;color:var(--muted);font-size:13px;text-align:center;border-top:1px solid var(--border);background:#fff}
.section-title{display:flex;align-items:center;justify-content:space-between;margin:18px 0 10px}
.section-title h2{margin:0;font-size:18px}
.section-title a{font-size:13px}