* { box-sizing: border-box; }
body { margin: 0; background: #f3f6fc; color: #2a3851; font-family: "PingFang SC", "Microsoft YaHei", sans-serif; }
.admin-container { max-width: 1100px; margin: 0 auto; padding: 0 16px; }
.admin-top { background: linear-gradient(120deg, #173f92, #2b66d3); color: #fff; }
.admin-top-inner { display: flex; justify-content: space-between; align-items: center; padding: 12px 0; }
.admin-top h1 { margin: 0; font-size: 22px; }
.card { margin-top: 14px; background: #fff; border: 1px solid #dde7f8; border-radius: 10px; box-shadow: 0 3px 14px rgba(23,63,146,.08); padding: 14px; }
.filter { display: flex; gap: 8px; }
.filter input, .filter select { border: 1px solid #ced9ef; border-radius: 6px; padding: 9px; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; border-bottom: 1px solid #ecf1fb; padding: 10px 8px; font-size: 13px; }
th { color: #4f6996; background: #f7faff; }
.btn { border: 1px solid #c5d3ec; border-radius: 6px; padding: 8px 12px; background: #fff; color: #355a95; text-decoration: none; cursor: pointer; }
.btn.primary { border-color: transparent; background: linear-gradient(180deg, #ff9300, #f07d00); color: #fff; }
.link-btn { border: 0; background: transparent; color: #c9302c; cursor: pointer; }
.empty { text-align: center; color: #7f8da7; }
.edit-form label { display: block; margin: 10px 0 6px; color: #4d638d; font-size: 13px; }
.edit-form input, .edit-form select, .edit-form textarea { width: 100%; border: 1px solid #ced9ef; border-radius: 6px; padding: 9px; font: inherit; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.msg { padding: 9px 10px; border-radius: 6px; margin-bottom: 10px; font-size: 13px; }
.msg.error { background: #fff1f1; color: #b63737; border: 1px solid #f2c5c5; }
.login-wrap { max-width: 380px; margin: 80px auto; background: #fff; border: 1px solid #dde7f8; border-radius: 12px; box-shadow: 0 5px 18px rgba(18,54,130,.1); padding: 18px; }
.login-wrap h1 { margin: 0 0 12px; color: #274a81; }
.login-form label { display: block; margin: 8px 0 6px; font-size: 13px; color: #4a638d; }
.login-form input { width: 100%; border: 1px solid #ced9ef; border-radius: 6px; padding: 10px; }
.login-form button { width: 100%; margin-top: 12px; border: 0; border-radius: 6px; padding: 10px; color: #fff; background: linear-gradient(180deg, #2f66d8, #1f4fbf); cursor: pointer; }
@media (max-width: 740px) { .grid-2 { grid-template-columns: 1fr; } .filter { flex-direction: column; } }