:root {
    --bg: #f6f7f9;
    --card: #ffffff;
    --text: #1a1d21;
    --text-2: #6b7280;
    --border: #e5e7eb;
    --primary: #111827;
    --accent: #2563eb;
    --accent-light: #eff6ff;
    --green: #059669;
    --green-bg: #ecfdf5;
    --red: #dc2626;
    --red-bg: #fef2f2;
    --orange: #d97706;
    --orange-bg: #fffbeb;
    --gray-bg: #f3f4f6;
    --radius: 16px;
    --shadow: 0 1px 3px rgba(0,0,0,.05), 0 8px 24px rgba(0,0,0,.05);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.5;
}
/* 顶部导航 */
.nav {
    background: rgba(255,255,255,.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}
.nav-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 14px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.logo {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -.02em;
}
.logo span { color: var(--accent); }
.nav-right { display: flex; align-items: center; gap: 12px; }
.nav-user {
    display: none;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-2);
}
.nav-user.show { display: flex; }
/* 按钮 */
.btn {
    padding: 9px 18px;
    border-radius: 10px;
    border: none;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all .15s;
    font-family: inherit;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: #374151; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-outline:hover { background: var(--gray-bg); }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: #1d4ed8; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-sm { padding: 6px 12px; font-size: 13px; border-radius: 8px; }
/* 主容器 */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 40px 24px 60px;
}
.hero { text-align: center; margin-bottom: 36px; }
.hero h1 {
    font-size: 32px;
    font-weight: 800;
    letter-spacing: -.03em;
    margin-bottom: 8px;
}
.hero p { color: var(--text-2); font-size: 15px; }
/* 查询卡片 */
.card {
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    padding: 28px;
    margin-bottom: 24px;
}
/* Tab 切换 */
.tabs {
    display: flex;
    gap: 4px;
    background: var(--gray-bg);
    padding: 4px;
    border-radius: 12px;
    margin-bottom: 20px;
    width: fit-content;
}
.tab {
    padding: 8px 20px;
    border-radius: 9px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    color: var(--text-2);
    transition: all .15s;
    border: none;
    background: transparent;
    font-family: inherit;
}
.tab.active { background: #fff; color: var(--text); box-shadow: 0 1px 3px rgba(0,0,0,.08); }
/* 输入区 */
.input-group { display: flex; gap: 12px; }
.input {
    flex: 1;
    padding: 12px 16px;
    border: 1.5px solid var(--border);
    border-radius: 12px;
    font-size: 15px;
    outline: none;
    transition: border-color .15s;
    font-family: inherit;
    background: #fff;
}
.input:focus { border-color: var(--accent); }
textarea.input { display: block; width: 100%; box-sizing: border-box; resize: vertical; min-height: 220px; line-height: 1.9; font-family: "SF Mono", Consolas, "Courier New", monospace; font-size: 14px; padding: 14px 16px; word-break: break-all; }
.hint { font-size: 13px; color: var(--text-2); margin-top: 10px; }
.hint b { color: var(--accent); font-weight: 600; }
/* 结果区 */
.result-area { margin-top: 24px; }
.result-item {
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 14px 18px;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    transition: all .15s;
    background: #fff;
}
.result-item:hover { border-color: var(--accent); box-shadow: 0 2px 8px rgba(37,99,235,.08); }
.result-item .card-name { font-weight: 600; font-size: 14px; word-break: break-all; overflow-wrap: anywhere; }
.result-item .card-name small { color: var(--text-2); font-weight: 400; margin-left: 8px; }
.result-left { display: flex; align-items: center; gap: 12px; }
.badge {
    display: inline-block;
    padding: 3px 12px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
}
.badge-valid { background: var(--green-bg); color: var(--green); }
.badge-expired { background: var(--red-bg); color: var(--red); }
.badge-banned { background: var(--orange-bg); color: var(--orange); }
.badge-notfound { background: var(--gray-bg); color: var(--text-2); }
.badge-permanent { background: var(--accent-light); color: var(--accent); }
.badge-inactive { background: #f3e8ff; color: #7c3aed; }
/* 详情 */
.detail {
    display: none;
    border: 1px solid var(--border);
    border-top: none;
    border-radius: 0 0 12px 12px;
    padding: 18px;
    margin-top: -10px;
    margin-bottom: 10px;
    background: #fafbfc;
}
.detail.show { display: block; }
.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 10px 24px;
}
.detail-item { display: flex; justify-content: space-between; font-size: 13.5px; padding: 6px 0; border-bottom: 1px dashed var(--border); }
.detail-item .label { color: var(--text-2); flex-shrink: 0; margin-right: 16px; }
.detail-item .value { font-weight: 500; word-break: break-all; text-align: right; }
/* 卡号可复制框（长卡号自动换行，点击自动全选） */
.detail-card { flex-wrap: wrap; gap: 4px 12px; }
.detail-card .label { flex-basis: 100%; margin-right: 0; }
.card-copy-box {
    display: inline-block;
    width: 100%;
    box-sizing: border-box;
    background: #f1f5f9;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 8px 12px;
    font-family: Consolas, Menlo, monospace;
    font-size: 13px;
    color: #1e293b;
    word-break: break-all;
    overflow-wrap: anywhere;
    -webkit-user-select: all;
    user-select: all;
    cursor: text;
    transition: border-color .15s, box-shadow .15s;
}
.card-copy-box:hover { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(37,99,235,.1); }
/* 详情底部操作区（单卡复制详情按钮） */
.detail-actions {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px dashed var(--border);
    text-align: right;
}
/* 查询结果分组 */
.result-group {
    border: 1px solid var(--border);
    border-radius: 12px;
    margin-bottom: 16px;
    overflow: hidden;
    background: #fff;
}
.group-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 18px;
    background: var(--gray-bg);
    border-bottom: 1px solid var(--border);
}
.group-title { font-weight: 600; font-size: 14px; color: var(--text); }
.group-title b { color: var(--accent); }
.group-actions { display: flex; gap: 8px; flex-shrink: 0; }
.group-body { padding: 12px 14px; }
.group-body .result-item { margin-bottom: 8px; }
.group-body .result-item:last-child { margin-bottom: 0; }
/* 登录弹窗 */
.modal-mask {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.4);
    backdrop-filter: blur(4px);
    z-index: 200;
    align-items: center;
    justify-content: center;
}
.modal-mask.show { display: flex; }
.modal {
    background: #fff;
    border-radius: 20px;
    padding: 32px;
    width: 380px;
    max-width: 90%;
    box-shadow: 0 24px 64px rgba(0,0,0,.15);
    position: relative;
}
.modal h2 { font-size: 22px; font-weight: 700; margin-bottom: 6px; }
.modal .sub { color: var(--text-2); font-size: 14px; margin-bottom: 24px; }
.modal .form-item { margin-bottom: 16px; }
.modal .form-item label { display: block; font-size: 13px; font-weight: 500; margin-bottom: 6px; color: var(--text-2); }
.modal .input { width: 100%; }
.modal .btn { width: 100%; margin-top: 8px; }
.modal-close {
    position: absolute;
    top: 16px; right: 16px;
    background: none; border: none;
    font-size: 22px; color: var(--text-2);
    cursor: pointer;
}
.msg { font-size: 13px; margin-top: 10px; display: none; }
.msg.error { color: var(--red); }
.msg.success { color: var(--green); }
.msg.show { display: block; }
/* 提示条 */
.notice-bar {
    background: var(--accent-light);
    border: 1px solid #bfdbfe;
    color: #1e40af;
    border-radius: 12px;
    padding: 12px 18px;
    font-size: 13.5px;
    margin-bottom: 24px;
}
.loading { text-align: center; color: var(--text-2); font-size: 14px; padding: 20px; display: none; }
.loading.show { display: block; }
footer {
    text-align: center;
    color: var(--text-2);
    font-size: 13px;
    padding: 24px;
    border-top: 1px solid var(--border);
}
.empty { text-align: center; color: var(--text-2); padding: 30px; font-size: 14px; }
/* ===== 辅助 class（替代原内联 style）===== */
.hidden { display: none !important; }
.mt-12 { margin-top: 12px; }
.align-center { align-self: center; }
.text-error { color: #dc2626; }
.pad-sm { padding: 10px; }
.detail-arrow { color: #9ca3af; font-size: 12px; }
/* ===== 移动端适配 ===== */
@media (max-width: 768px) {
    .nav-inner { padding: 12px 16px; }
    .logo { font-size: 17px; }
    .container { padding: 20px 14px 40px; }
    .hero { margin-bottom: 24px; }
    .hero h1 { font-size: 24px; }
    .hero p { font-size: 13.5px; }
    .card { padding: 18px 14px; }
    .tabs { width: 100%; }
    .tab { flex: 1; padding: 9px 6px; font-size: 13.5px; }
    .input-group { flex-direction: column; gap: 10px; }
    .input-group .btn { width: 100%; padding: 12px; }
    .input { font-size: 15px; padding: 12px 14px; }
    textarea.input { min-height: 200px; font-size: 14px; }
    .notice-bar { font-size: 12.5px; padding: 10px 14px; border-radius: 10px; }
    .result-item { padding: 12px 14px; }
    .detail { padding: 14px; }
    .detail-grid { grid-template-columns: 1fr; gap: 0 0; }
    .detail-item { font-size: 13px; }
    .modal { padding: 26px 20px; width: 100%; }
    .batch-tip { font-size: 12.5px; }
}
@media (max-width: 400px) {
    .hero h1 { font-size: 21px; }
    .badge { font-size: 11px; padding: 2px 9px; }
    .card-name { font-size: 13px; }
    .result-item .card-name small { display: block; margin-left: 0; }
    .btn { font-size: 13px; padding: 8px 14px; }
}