* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: #f3f5f7;
    color: #222;
}

.container {
    max-width: 720px;
    margin: 40px auto;
    padding: 20px;
}

.card {
    background: #fff;
    padding: 32px;
    border-radius: 14px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

h1 {
    margin-top: 0;
    font-size: 30px;
}

h2 {
    margin-top: 28px;
    font-size: 20px;
}

.hint {
    color: #666;
    margin-bottom: 24px;
}

form {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

input {
    flex: 1;
    min-width: 220px;
    padding: 14px;
    font-size: 18px;
    border: 1px solid #ccc;
    border-radius: 8px;
}

button {
    padding: 14px 22px;
    font-size: 16px;
    border: 0;
    border-radius: 8px;
    background: #1f2937;
    color: white;
    cursor: pointer;
}

button:hover {
    background: #111827;
}

.message {
    margin-top: 24px;
    padding: 14px;
    border-radius: 8px;
}

.error {
    background: #ffecec;
    color: #8a1f1f;
}

.result {
    margin-top: 30px;
}

.tracking-number {
    font-size: 22px;
    font-weight: bold;
    letter-spacing: 1px;
}

.timeline {
    margin-top: 20px;
    border-left: 3px solid #d1d5db;
    padding-left: 20px;
}

.timeline-item {
    position: relative;
    margin-bottom: 22px;
}

.dot {
    position: absolute;
    left: -30px;
    top: 3px;
    width: 15px;
    height: 15px;
    background: #1f2937;
    border-radius: 50%;
}

.timeline-content strong {
    display: block;
    font-size: 17px;
}

.timeline-content span {
    display: block;
    margin-top: 4px;
    color: #666;
}

.current-status {
    margin-top: 28px;
    padding: 16px;
    background: #eef2ff;
    border-radius: 8px;
    font-size: 18px;
}

@media (max-width: 600px) {
    .card {
        padding: 22px;
    }

    form {
        display: block;
    }

    input,
    button {
        width: 100%;
    }

    button {
        margin-top: 12px;
    }
.site-header {
    background: #111827;
    color: #fff;
    padding: 18px 24px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}

.header-inner {
    max-width: 1100px;
    margin: 0 auto;
}

.logo {
    font-size: 28px;
    font-weight: bold;
    letter-spacing: 1px;
}

.site-footer {
    margin-top: 60px;
    background: #111827;
    color: #fff;
    padding: 30px 20px;
}

.footer-inner {
    max-width: 1100px;
    margin: 0 auto;
    text-align: center;
}

.footer-links {
    margin-bottom: 14px;
    position: relative;
    text-align: center;
}

.footer-links a {
    color: #fff;
    text-decoration: none;
    margin: 0 12px;
    text-align: center;
}

.footer-links a:hover {
    text-decoration: underline;
    text-align: center;
}

.footer-copy {
    color: #d1d5db;
    font-size: 14px;
}


}

@media (max-width: 600px) {
    .card {
        padding: 22px;
    }

    form {
        display: block;
    }

    input,
    button {
        width: 100%;
    }

    button {
        margin-top: 12px;
    }
}

.site-header {
    background: #111827;
    color: #fff;
    padding: 18px 24px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}

.header-inner {
    max-width: 1100px;
    margin: 0 auto;
}

.logo {
    font-size: 28px;
    font-weight: bold;
    letter-spacing: 1px;
}

.site-footer {
    margin-top: 60px;
    background: #111827;
    color: #fff;
    padding: 30px 20px;
    text-align: center;
}

.footer-inner {
    max-width: 1100px;
    margin: 0 auto;
}

.footer-links {
    margin-bottom: 14px;
    text-align: center;
    font-size: 11px;
}

.footer-links a {
    color: #fff;
    text-decoration: none;
    margin: 0 12px;
}

.footer-links a:hover {
    text-decoration: underline;
}

.footer-copy {
    color: #d1d5db;
    font-size: 14px;
    text-align: center;
}