/* Nav 模块 - 所有 nav 变体共用的基础样式 */
.mod-nav { background: var(--primary, #2563eb); text-align: center; padding: 14px; }
.mod-nav__links a { color: #fff; text-decoration: none; margin: 0 16px; font-size: 15px; }
.mod-nav__links a.is-active { text-decoration: underline; font-weight: 700; }

.mod-nav__select { display: none; }
@media (max-width: 600px) {
    .mod-nav__links { display: none; }
    .mod-nav__select { display: block; padding: 14px 16px; background: var(--primary, #2563eb); }
    .mod-nav__select select { box-sizing: border-box;
        width: 100%; padding: 12px 40px 12px 16px; border-radius: 10px; border: none;
        font-size: 15px; font-weight: 600; color: var(--dark, #111); background: #fff;
        appearance: none; -webkit-appearance: none;
        background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%23374151'%3E%3Cpath fill-rule='evenodd' d='M5.23 7.21a.75.75 0 011.06.02L10 11.168l3.71-3.938a.75.75 0 111.08 1.04l-4.25 4.5a.75.75 0 01-1.08 0l-4.25-4.5a.75.75 0 01.02-1.06z' clip-rule='evenodd'/%3E%3C/svg%3E");
        background-repeat: no-repeat; background-position: right 14px center; background-size: 18px;
        box-shadow: 0 2px 8px rgba(0,0,0,.12);
        cursor: pointer;
    }
}