.t1-header {
    position: sticky;
    top: 0;
    z-index: 1060;
    background: rgba(245, 247, 250, 0.86);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--nl-line);
}

[data-bs-theme="dark"] .t1-header {
    background: rgba(11, 18, 32, 0.9);
}

.t1-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.25rem;
    min-height: var(--nl-header-h);
}

.t1-header__brand {
    display: inline-flex;
    align-items: center;
    gap: 0.7rem;
    min-width: 0;
}

.t1-header__brand img {
    height: 2.15rem;
    width: auto;
    flex-shrink: 0;
}

.t1-header__name {
    font-family: var(--nl-display);
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: -0.03em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 28vw;
}

.t1-header__actions {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    flex-shrink: 0;
}

.t1-header__search {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 999px;
    border: 1px solid var(--nl-line);
    background: var(--nl-surface);
    color: var(--nl-ink);
    transition: border-color 0.2s, background 0.2s, color 0.2s;
}

.t1-header__search:hover {
    border-color: var(--nl-accent);
    background: var(--nl-accent-soft);
    color: var(--nl-accent);
}

.t1-nav--desktop ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    gap: 0.2rem 1.35rem;
    flex-wrap: wrap;
}

.t1-nav--desktop > ul > li > a {
    font-family: var(--nl-display);
    font-size: 0.92rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    padding: 0.35rem 0;
    color: var(--nl-ink);
}

.t1-nav--desktop > ul > li > a:hover {
    color: var(--nl-accent);
}

.t1-nav .submenu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background: var(--nl-surface);
    border: 1px solid var(--nl-line);
    border-radius: var(--nl-radius);
    box-shadow: var(--nl-shadow);
    padding: 0.45rem 0;
    z-index: 100;
}

.t1-nav li { position: relative; }

@media (min-width: 769px) {
    .t1-nav .has-submenu:hover > .submenu { display: block; }
}

.t1-nav .submenu a {
    display: block;
    padding: 0.55rem 1rem;
    font-size: 0.9rem;
    font-weight: 500;
}

.t1-nav .submenu a:hover {
    background: var(--nl-accent-soft);
    color: var(--nl-accent);
}

.t1-header__burger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 2.5rem;
    height: 2.5rem;
    padding: 0;
    border: 1px solid var(--nl-line);
    border-radius: 999px;
    background: var(--nl-surface);
    cursor: pointer;
    position: relative;
    z-index: 1070;
}

.t1-header__burger span {
    display: block;
    width: 16px;
    height: 2px;
    margin: 0 auto;
    background: var(--nl-ink);
    transition: transform 0.25s var(--nl-ease), opacity 0.2s var(--nl-ease);
}

.t1-header__burger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.t1-header__burger.active span:nth-child(2) { opacity: 0; }
.t1-header__burger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.t1-nav--drawer { display: none; }

.t1-nav__label {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--nl-muted);
    margin: 0 0 1rem;
}

@media (max-width: 991px) {
    .t1-nav--desktop { display: none; }
    .t1-header__burger { display: flex; }
    .t1-header__name { max-width: 46vw; }

    .t1-nav--drawer {
        display: block;
        position: fixed;
        top: 0;
        right: 0;
        width: min(320px, 88vw);
        height: 100vh;
        background: var(--nl-surface);
        padding: 5.25rem 1.35rem 2rem;
        transform: translate3d(100%, 0, 0);
        transition: transform 0.3s var(--nl-ease);
        overflow-y: auto;
        z-index: 1040;
        box-shadow: -12px 0 40px rgba(15, 23, 42, 0.12);
        border-left: 1px solid var(--nl-line);
    }

    .t1-nav--drawer.active {
        transform: translate3d(0, 0, 0);
    }

    .t1-nav--drawer ul {
        list-style: none;
        margin: 0;
        padding: 0;
        display: flex;
        flex-direction: column;
    }

    .t1-nav--drawer > ul > li > a {
        display: block;
        padding: 0.9rem 0;
        font-family: var(--nl-display);
        font-weight: 600;
        font-size: 1.1rem;
        border-bottom: 1px solid var(--nl-line);
    }

    .t1-nav--drawer .submenu {
        position: static;
        display: none;
        border: none;
        box-shadow: none;
        border-radius: 0;
        background: transparent;
        padding: 0.25rem 0 0.75rem 0.75rem;
        min-width: 0;
    }

    .t1-nav--drawer .has-submenu.active > .submenu {
        display: block;
    }

    .t1-nav--drawer .submenu a {
        padding: 0.5rem 0;
        color: var(--nl-muted);
        border-bottom: 1px dashed var(--nl-line);
        font-size: 0.95rem;
    }
}