/* ── 毫秒时钟 ── */
.ms-wrapper {
    text-align: center;
    padding: 2rem 0;
}

.ms-date {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 0.8rem;
}

.ms-time {
    font-family: 'Fira Code', monospace;
    line-height: 1.2;
}

.ms-hms {
    font-size: 4rem;
    font-weight: 700;
    color: #1a1a1a;
    letter-spacing: 2px;
}

.ms-dot {
    font-size: 3.5rem;
    font-weight: 700;
    color: #999;
}

.ms-mill {
    font-size: 2.8rem;
    font-weight: 600;
    color: #2563eb;
    min-width: 3ch;
    display: inline-block;
    text-align: left;
}

.ms-zone {
    font-size: 0.9rem;
    color: #999;
    margin-top: 0.6rem;
}

.ms-ts {
    margin-top: 1rem;
    font-size: 0.88rem;
    color: #999;
}

.ms-ts-label { color: #aaa; }

.ms-ts-value {
    font-family: 'Fira Code', monospace;
    color: #666;
    user-select: all;
}

/* ── 关于毫秒 ── */
.about-content {
    max-width: 720px;
    margin: 0 auto;
    background: white;
    border-radius: 10px;
    padding: 2rem;
    border: 1px solid #e8eaf0;
    line-height: 1.8;
    color: #555;
    font-size: 0.92rem;
}

.about-content p {
    margin-bottom: 1rem;
}

.about-content p:last-child {
    margin-bottom: 0;
}

.about-content code {
    background: #f0f0f0;
    padding: 0.15rem 0.4rem;
    border-radius: 3px;
    font-family: 'Fira Code', monospace;
    font-size: 0.85rem;
}

/* ── Mobile ── */
@media (max-width: 640px) {
    .ms-hms { font-size: 2.8rem; }
    .ms-dot { font-size: 2.4rem; }
    .ms-mill { font-size: 2rem; }
}