:root {
    --primary: #1f4b8e;
    --primary-dark: #163b72;
    --text: #2c3e50;
    --muted: #8a9aa9;
    --border: #e4e8ef;
    --bg: #f5f7fb;
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, "Noto Sans CJK SC", sans-serif;
    color: var(--text);
    background: var(--bg);
}
.hero {
    position: relative;
    height: 180px;
    display: flex;
    align-items: flex-end;
    padding: 24px 0;
    color: #fff;
    background-image: url("../images/top.png");
    background-size: cover;
    background-position: center;
}
.content {
    max-width: 980px;
    margin: 20px auto 40px;
    padding: 0 20px;
}
.search {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    gap: 14px;
    align-items: end;
}
.field {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.label {
    font-size: 13px;
    color: var(--muted);
}
input[type="text"] {
    height: 36px;
    padding: 0 12px;
    border: 1px solid var(--border);
    border-radius: 2px;
    font-size: 14px;
    outline: none;
    background: #fff;
}
input[type="text"]:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(31,75,142,0.12);
}
.btn {
    height: 36px;
    padding: 0 20px;
    border: none;
    border-radius: 2px;
    background: var(--primary);
    color: #fff;
    font-size: 14px;
    cursor: pointer;
}
.btn:hover { background: var(--primary-dark); }
.table-wrap {
    margin-top: 16px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 2px;
    overflow: hidden;
}
table {
    width: 100%;
    border-collapse: collapse;
    table-layout: fixed;
}
thead th {
    background: var(--primary);
    color: #fff;
    font-weight: 600;
    font-size: 14px;
    padding: 10px 12px;
    text-align: left;
}
tbody td {
    border-top: 1px solid var(--border);
    font-size: 14px;
    color: var(--text);
    padding: 10px 12px;
    background: #fff;
}
.msg {
    margin-top: 10px;
    font-size: 14px;
    color: #c43c3c;
}
@media (max-width: 720px) {
    .hero { height: 160px; }
    .title { font-size: 26px; }
    .search { grid-template-columns: 1fr; }
}