body {
    font-family: "Segoe UI", "Microsoft YaHei", "Hiragino Sans", sans-serif;
    background-color: #f8f9fa;
    color: #212529;
}

.navbar-brand {
    letter-spacing: 0.5px;
}

.nav-link {
    transition: color 0.2s ease;
}

    .nav-link:hover {
        color: #0d6efd !important;
    }

footer {
    font-size: 0.95rem;
}

.mobile-menu-trigger {
    text-decoration: none !important;
    box-shadow: none !important;
}

    .mobile-menu-trigger:hover,
    .mobile-menu-trigger:focus {
        color: #0d6efd !important;
        background-color: transparent !important;
    }

.mobile-nav-offcanvas {
    width: 320px;
    max-width: 85vw;
    border-left: 1px solid #e9ecef;
}

.mobile-menu-title {
    font-size: 0.85rem;
    color: #6c757d;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.list-group-item {
    border-left: 0;
    border-right: 0;
    padding-top: 0.9rem;
    padding-bottom: 0.9rem;
}

    .list-group-item:first-child {
        border-top: 0;
    }

    .list-group-item:hover {
        background-color: #f8f9fa;
    }

/* 手机端优化 */
@media (max-width: 991.98px) {
    .navbar {
        min-height: 72px;
    }

    .navbar-brand {
        font-size: 1.5rem;
    }

    main .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .hero-section,
    .site-card {
        border-radius: 12px;
    }
}

.menu-section {
    margin-top: 20px;
}

.menu-title {
    font-size: 15px;
    font-weight: 700;
    color: #4b5563;
    margin-bottom: 10px;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 0;
    color: #111827;
    text-decoration: none;
    border-bottom: 1px solid #e5e7eb;
    transition: all 0.2s ease;
}

    .menu-item:hover {
        color: #2563eb;
    }

    .menu-item i {
        width: 18px;
        font-size: 16px;
        color: #2563eb;
        flex-shrink: 0;
    }

.language-item.active {
    color: #2563eb;
    font-weight: 700;
}

    .language-item.active::after {
        content: "当前";
        margin-left: auto;
        font-size: 12px;
        color: #2563eb;
        background: #eff6ff;
        border: 1px solid #bfdbfe;
        border-radius: 999px;
        padding: 2px 8px;
    }


/*首页视频*/
.hero-video-wrap {
    position: relative;
    min-height: 560px;
    border-radius: 1.5rem;
    overflow: hidden;
    display: flex;
    align-items: stretch;
}

.hero-bg-video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
}

.hero-video-mask {
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.05);
    z-index: 1;
}

.hero-content-card {
    position: relative;
    z-index: 2;
    width: 100%;
    margin: 0;
    background: rgba(255, 255, 255, 0) !important;
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
}

.japan-portal-card {
    background: rgba(255, 255, 255, 0.72);
    border-radius: 1rem;
    padding: 1rem 1.25rem;
    line-height: 1.6;
}

@media (max-width: 991.98px) {
    .hero-video-wrap {
        min-height: auto;
    }

    .hero-bg-video {
        height: 100%;
    }

    .hero-content-card {
        padding: 1.5rem !important;
    }
}
.portal-header {
    margin-bottom: 10px;
}
.portal-date-row {
    margin-bottom: 10px;
}