.lck-header {
    position: sticky;
    top: 0;
    z-index: 30;
    background: rgba(253, 253, 255, 0.92);
    backdrop-filter: blur(22px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.85);
}
.lck-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-block: 0.75rem;
}
.lck-header__brand {
    display: flex;
    align-items: center;
    min-width: 0;
}
.lck-header__logo-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.lck-header__logo-mark {
    position: relative;
    width: 40px;
    height: 40px;
    border-radius: 999px;
    background: radial-gradient(circle at 0 0, #28a5ff 0, #5ce1c3 28%, #ffb4a2 60%, #ffd86b 100%);
    box-shadow: 0 10px 26px rgba(15, 23, 42, 0.25);
    display: flex;
    align-items: center;
    justify-content: center;
}
.lck-header__logo-chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    padding: 0.15rem 0.45rem;
    font-size: 0.6rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    background: rgba(15, 23, 42, 0.94);
    color: #e0f2fe;
}
.lck-header__logo-text {
    display: flex;
    flex-direction: column;
    min-width: 0;
}
.lck-header__site-name {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    white-space: nowrap;
}
.lck-header__site-tagline {
    font-size: 0.72rem;
    color: var(--gray-500);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.lck-header__toggle {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    gap: 0.22rem;
    width: 2.4rem;
    height: 2.4rem;
    border-radius: 999px;
    border: 1px solid rgba(148, 163, 184, 0.55);
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
    cursor: pointer;
    transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}
.lck-header__toggle:hover {
    background: #ffffff;
    box-shadow: 0 16px 40px rgba(15, 23, 42, 0.14);
    transform: translateY(-1px);
}
.lck-header__toggle-bar {
    width: 1.2rem;
    height: 2px;
    border-radius: 999px;
    background: var(--gray-800);
    transition: transform var(--transition-base), opacity var(--transition-fast), width var(--transition-fast);
}
.lck-header__toggle.is-active .lck-header__toggle-bar:nth-child(1) {
    transform: translateY(4px) rotate(45deg);
    width: 1.1rem;
}
.lck-header__toggle.is-active .lck-header__toggle-bar:nth-child(2) {
    opacity: 0;
}
.lck-header__toggle.is-active .lck-header__toggle-bar:nth-child(3) {
    transform: translateY(-4px) rotate(-45deg);
    width: 1.1rem;
}
.lck-header__nav {
    display: flex;
    align-items: center;
    gap: 1.75rem;
}
.lck-header__nav-list {
    display: flex;
    align-items: center;
    gap: 1.1rem;
}
.lck-header__nav-link {
    position: relative;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--gray-600);
    padding: 0.3rem 0.1rem;
    border-radius: 999px;
    transition: color var(--transition-fast), transform var(--transition-fast);
}
.lck-header__nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -0.15rem;
    height: 2px;
    border-radius: 999px;
    background: linear-gradient(90deg, #28a5ff, #ffd86b);
    transform-origin: left;
    transform: scaleX(0);
    transition: transform var(--transition-base);
}
.lck-header__nav-link:hover {
    color: var(--gray-900);
    transform: translateY(-1px);
}
.lck-header__nav-link:hover::after {
    transform: scaleX(1);
}
.lck-header__nav-link[aria-current="page"] {
    color: var(--gray-900);
}
.lck-header__nav-link[aria-current="page"]::after {
    transform: scaleX(1);
}
.lck-header__cta-wrap {
    margin-left: 1.25rem;
}
.lck-header__cta {
    padding-inline: 1.2rem;
    font-size: 0.78rem;
}
.lck-header__cta:hover {
    text-decoration: none;
}
.lck-header__nav, .lck-header__cta-wrap {
    transition: opacity var(--transition-fast), visibility var(--transition-fast), transform var(--transition-base);
}
@media (max-width:767.98px) {
    .lck-header__inner {
    padding-block: 0.55rem;
}
.lck-header__site-tagline {
    display: none;
}
.lck-header__nav {
    position: fixed;
    width: 100%;
    height: 100vh;
    left: 0;
    top: 0;
    bottom: 0;
    flex-direction: column;
    justify-content: flex-start;
    align-items: stretch;
    padding: 4.5rem 1.25rem 1.5rem 1.25rem;
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(26px);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
}
.lck-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.35rem;
    margin-bottom: 1.5rem;
}
.lck-header__nav-link {
    display: inline-flex;
    padding: 0.55rem 1.1rem;
    border-radius: 999px;
    background: rgba(15, 23, 42, 0.75);
    color: #e5e7eb;
    font-size: 0.96rem;
}
.lck-header__nav-link::after {
    display: none;
}
.lck-header__nav-link:hover {
    background: rgba(148, 163, 184, 0.35);
    transform: translateY(0);
}
.lck-header__nav-link[aria-current="page"] {
    background: linear-gradient(135deg, #28a5ff, #5ce1c3);
    color: #0b1220;
}
.lck-header__cta-wrap {
    margin-left: 0;
}
.lck-header__cta {
    width: 100%;
    justify-content: center;
}
.lck-header__nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}
.lck-header__toggle {
    margin-left: auto;
}
}@media (min-width:768px) {
    .lck-header__toggle {
    display: none;
}
}@media (min-width:1024px) {
    .lck-header__nav-list {
    gap: 1.4rem;
}
.lck-header__site-name {
    font-size: 1.15rem;
}
}