/* 公开证书查询页（仅编号 → 跳转 certificate.php） */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: #f0f4f8;
    color: #1a1a1a;
    line-height: 1.5;
    min-height: 100vh;
}

.sq-wrap {
    max-width: 22rem;
    margin: 0 auto;
    padding: 1.5rem 1rem 2rem;
}

.sq-title {
    font-size: 1.25rem;
    font-weight: 600;
    text-align: center;
    margin: 0 0 0.75rem;
    color: #0f172a;
}

.sq-lead {
    font-size: 0.875rem;
    color: #64748b;
    margin: 0 0 1.25rem;
    text-align: center;
}

.sq-error {
    background: #fef2f2;
    color: #b91c1c;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    margin: 0 0 1rem;
}

.sq-form {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
    padding: 1.25rem 1rem 1.5rem;
}

.sq-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: #334155;
    margin-bottom: 0.5rem;
}

.sq-input {
    width: 100%;
    padding: 0.65rem 0.85rem;
    font-size: 1rem;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.sq-input:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.sq-btn {
    width: 100%;
    padding: 0.7rem 1rem;
    font-size: 1rem;
    font-weight: 600;
    color: #fff;
    background: #2563eb;
    border: none;
    border-radius: 8px;
    cursor: pointer;
}

.sq-btn:hover {
    background: #1d4ed8;
}