.top-nav {
        position: sticky;
        top: 0;
        z-index: 40;
        padding: 16px;
        background: linear-gradient(180deg, rgba(243, 245, 247, 0.96) 0%, rgba(243, 245, 247, 0.72) 70%, rgba(243, 245, 247, 0) 100%);
        backdrop-filter: blur(10px);
    }

    .top-nav-box {
        max-width: 1120px;
        margin: 0 auto;
        padding: 12px 18px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        border: 1px solid var(--theme-border);
        border-radius: 22px;
        background: rgba(255, 255, 255, 0.92);
        box-shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
    }

    [data-theme="dark"] .top-nav-box {
        background: rgba(22, 32, 50, 0.92);
    }

    .top-nav-logo {
        min-width: 0;
        display: flex;
        align-items: center;
        gap: 12px;
        text-decoration: none;
    }

    .logo-img,
    .logo-mark {
        width: 42px;
        height: 42px;
        flex-shrink: 0;
        border-radius: 14px;
    }

    .logo-mark {
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-weight: 700;
        background: var(--theme-primary-gradient);
        box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.28);
    }

    .logo-copy {
        min-width: 0;
        display: flex;
        flex-direction: column;
        gap: 2px;
    }

    .logo-title-row {
        display: flex;
        align-items: center;
        gap: 8px;
    }

    .logo-title {
        font-size: 17px;
        font-weight: 700;
        color: var(--theme-text);
    }

    .logo-badge {
        padding: 2px 8px;
        border-radius: 999px;
        font-size: 11px;
        color: var(--theme-primary);
        background: color-mix(in srgb, var(--theme-primary) 12%, white);
    }

    .logo-subtitle {
        max-width: 360px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        font-size: 12px;
        color: var(--theme-text-secondary);
    }

    .top-nav-menu {
        display: flex;
        align-items: center;
        gap: 6px;
        margin-left: auto;
    }

    .top-nav-menu > a,
    .nav-menu-item {
        padding: 9px 14px;
        border-radius: 999px;
        color: var(--theme-text-secondary);
        text-decoration: none;
        font-size: 13px;
    }

    .top-nav-menu > a:hover,
    .top-nav-menu > a.active,
    .nav-menu-item:hover,
    .nav-menu-item.active {
        color: var(--theme-text);
        background: var(--theme-card);
    }

    .top-nav-actions {
        display: flex;
        align-items: center;
        gap: 10px;
    }

    .theme-switcher {
        position: relative;
    }

    .theme-switcher-btn,
    .nav-contact-btn,
    .nav-menu-icon {
        height: 38px;
        border: 1px solid var(--theme-border);
        background: var(--theme-surface);
        color: var(--theme-text-secondary);
        border-radius: 999px;
        cursor: pointer;
    }

    .theme-switcher-btn,
    .nav-contact-btn {
        padding: 0 14px;
        font-size: 13px;
    }

    .nav-menu-icon {
        width: 38px;
        display: none;
        align-items: center;
        justify-content: center;
        font-size: 18px;
    }

    .nav-search-icon-btn {
        width: 38px;
        height: 38px;
        display: none;
        align-items: center;
        justify-content: center;
        border: 1px solid var(--theme-border);
        background: var(--theme-surface);
        color: var(--theme-text-secondary);
        border-radius: 999px;
        cursor: pointer;
        transition: all 0.2s ease;
    }

    .nav-search-icon-btn:hover {
        color: var(--theme-primary);
        border-color: var(--theme-border-strong);
        background: var(--theme-card);
    }

    .theme-switcher-btn:hover,
    .nav-contact-btn:hover,
    .nav-menu-icon:hover {
        color: var(--theme-primary);
        border-color: var(--theme-border-strong);
        background: var(--theme-card);
    }

    .theme-dropdown {
        position: absolute;
        right: 0;
        top: calc(100% + 8px);
        min-width: 136px;
        padding: 8px;
        border-radius: 16px;
        border: 1px solid var(--theme-border);
        background: var(--theme-surface);
        box-shadow: 0 18px 40px rgba(15, 23, 42, 0.14);
        z-index: 10;
    }

    .theme-option {
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 8px 10px;
        border-radius: 12px;
        cursor: pointer;
        color: var(--theme-text);
    }

    .theme-option:hover {
        background: var(--theme-card);
    }

    .theme-option.active {
        background: var(--theme-primary-gradient);
        color: #fff;
    }

    .theme-dot {
        width: 12px;
        height: 12px;
        border-radius: 50%;
        flex-shrink: 0;
    }

    .theme-name {
        font-size: 12px;
    }

    .qrcode-card img {
        width: 100%;
        border-radius: 14px;
    }

    .request-box {
        display: flex;
        flex-direction: column;
        gap: 14px;
    }

    .request-title {
        font-size: 18px;
        font-weight: 700;
        color: var(--theme-text);
    }

    .request-submit {
        height: 42px;
        border: none;
        border-radius: 12px;
        background: var(--theme-primary-gradient);
        color: #fff;
        cursor: pointer;
    }

    .nav-drawer {
        display: flex;
        flex-direction: column;
        gap: 8px;
    }

    .nav-drawer-menu {
        display: flex;
        flex-direction: column;
        gap: 6px;
    }

    .nav-drawer-menu > a,
    .nav-drawer-item {
        display: flex;
        align-items: center;
        min-height: 42px;
        padding: 0 14px;
        border-radius: 12px;
        color: var(--theme-text);
        background: var(--theme-card);
        text-decoration: none;
        cursor: pointer;
    }

    .nav-drawer-menu > a.active,
    .nav-drawer-item.active {
        color: #fff;
        background: var(--theme-primary-gradient);
    }

    .resource-dialog .el-dialog__header {
        margin: 0;
        padding: 18px 20px 0;
    }

    .resource-dialog-content {
        padding: 20px;
        text-align: center;
    }

    .resource-url-box {
        margin: 18px 0 14px;
        padding: 12px 14px;
        border-radius: 12px;
        background: var(--theme-card);
        text-align: left;
        word-break: break-all;
    }

    .resource-actions {
        display: flex;
        justify-content: center;
        gap: 10px;
        flex-wrap: wrap;
    }

    .resource-actions .primary-btn,
    .resource-actions .secondary-btn {
        min-width: 110px;
        height: 40px;
        padding: 0 14px;
        border-radius: 12px;
        text-decoration: none;
        border: 1px solid var(--theme-border);
        cursor: pointer;
    }

    .resource-actions .primary-btn {
        color: #fff;
        border: none;
        background: var(--theme-primary-gradient);
    }

    .resource-actions .secondary-btn {
        color: var(--theme-text);
        background: var(--theme-surface);
    }

    @media (max-width: 900px) {
        .top-nav-menu,
        .nav-contact-btn {
            display: none;
        }

        .nav-menu-icon {
            display: inline-flex;
        }

        .nav-search-icon-btn {
            display: flex;
        }

        .logo-subtitle {
            max-width: 180px;
        }
    }

    @media (max-width: 640px) {
        .top-nav {
            padding: 12px;
        }

        .top-nav-box {
            padding: 10px 12px;
            border-radius: 18px;
        }

        .logo-subtitle,
        .theme-switcher-btn {
            display: none;
        }
    }

    .top-nav {
        padding: 20px 20px 8px;
        background: linear-gradient(180deg, rgba(237, 241, 235, 0.96) 0%, rgba(237, 241, 235, 0.82) 74%, rgba(237, 241, 235, 0) 100%);
    }

    .top-nav-box {
        max-width: 1160px;
        padding: 14px 0;
        gap: 24px;
        border: none;
        border-bottom: 1px solid var(--theme-border);
        border-radius: 0;
        background: transparent;
        box-shadow: none;
    }

    .top-nav-logo {
        gap: 14px;
    }

    .logo-img,
    .logo-mark {
        width: 46px;
        height: 46px;
        border-radius: 16px;
    }

    .logo-mark {
        position: relative;
        background: #1b2230;
        box-shadow: none;
    }

    .logo-mark::after {
        content: "";
        position: absolute;
        inset: 4px;
        border: 1px solid rgba(255, 255, 255, 0.26);
        border-radius: 12px;
    }

    .logo-title {
        font-size: 18px;
        letter-spacing: -0.03em;
    }

    .logo-badge {
        padding: 3px 10px;
        font-size: 10px;
        letter-spacing: 0.14em;
        text-transform: uppercase;
        color: var(--theme-text-secondary);
        background: transparent;
        border: 1px solid var(--theme-border);
    }

    .logo-subtitle {
        font-size: 11px;
        letter-spacing: 0.08em;
        text-transform: uppercase;
    }

    .top-nav-menu {
        gap: 18px;
    }

    .top-nav-menu > a,
    .nav-menu-item {
        position: relative;
        padding: 8px 0;
        border-radius: 0;
        background: transparent;
        color: var(--theme-text-secondary);
        font-size: 13px;
        letter-spacing: 0.04em;
    }

    .top-nav-menu > a::after,
    .nav-menu-item::after {
        content: "";
        position: absolute;
        left: 0;
        right: 0;
        bottom: -14px;
        height: 2px;
        background: var(--theme-primary);
        transform: scaleX(0);
        transform-origin: left center;
        transition: transform 0.2s ease;
    }

    .top-nav-menu > a:hover,
    .top-nav-menu > a.active,
    .nav-menu-item:hover,
    .nav-menu-item.active {
        color: var(--theme-text);
        background: transparent;
    }

    .top-nav-menu > a:hover::after,
    .top-nav-menu > a.active::after,
    .nav-menu-item:hover::after,
    .nav-menu-item.active::after {
        transform: scaleX(1);
    }

    .top-nav-actions {
        gap: 12px;
    }

    .theme-switcher-btn,
    .nav-contact-btn,
    .nav-menu-icon {
        height: 40px;
        border-radius: 14px;
        background: rgba(252, 252, 248, 0.82);
    }

    .theme-switcher-btn,
    .nav-contact-btn {
        padding: 0 16px;
        letter-spacing: 0.04em;
    }

    .nav-contact-btn {
        border-color: var(--theme-primary);
        color: var(--theme-primary);
    }

    .nav-contact-btn:hover {
        color: #fff;
        background: var(--theme-primary);
    }

    .theme-dropdown {
        top: calc(100% + 10px);
        padding: 10px;
        border-radius: 18px;
        background: rgba(252, 252, 248, 0.96);
    }

    .theme-option {
        border-radius: 14px;
    }

    .qrcode-card p {
        font-size: 13px;
        line-height: 1.7;
    }

    .resource-dialog-content {
        padding: 24px;
    }

    .resource-url-box {
        border: 1px solid var(--theme-border);
        background: var(--theme-card-gradient);
    }

    @media (max-width: 900px) {
        .top-nav {
            padding: 14px 16px 6px;
        }

        .top-nav-box {
            padding: 12px 0;
        }

        .top-nav-menu {
            gap: 14px;
        }
    }

    @media (max-width: 640px) {
        .top-nav {
            padding: 12px;
        }

        .top-nav-box {
            gap: 12px;
        }

        .logo-badge,
        .top-nav-menu {
            display: none;
        }
    }