.landing-shell {
    position: relative;
    min-height: 100vh;
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr);
}

.landing-atmosphere {
    position: fixed;
    inset: 0;
    z-index: -2;
    overflow: hidden;
    pointer-events: none;
    background:
        radial-gradient(circle at 20% 18%, rgba(92, 197, 255, 0.18), transparent 26%),
        radial-gradient(circle at 78% 82%, rgba(145, 234, 201, 0.14), transparent 24%),
        linear-gradient(135deg, #071019 0%, #0b1620 42%, #050b11 100%);
}

.landing-aurora,
.landing-beam {
    position: absolute;
    filter: blur(32px);
    opacity: 0.7;
}

.landing-aurora-a {
    top: -10%;
    right: -8%;
    width: min(38rem, 50vw);
    height: min(38rem, 50vw);
    background: radial-gradient(circle, rgba(111, 206, 255, 0.3), transparent 68%);
    animation: driftA 16s ease-in-out infinite;
}

.landing-aurora-b {
    bottom: -14%;
    left: -10%;
    width: min(34rem, 46vw);
    height: min(34rem, 46vw);
    background: radial-gradient(circle, rgba(116, 255, 206, 0.2), transparent 68%);
    animation: driftB 20s ease-in-out infinite;
}

.landing-beam {
    inset: -20% 22% auto;
    height: 70vh;
    background: linear-gradient(180deg, rgba(120, 210, 255, 0.12), transparent 70%);
    transform: rotate(10deg);
    animation: beamShift 14s ease-in-out infinite;
}

.landing-gridlines {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 72px 72px;
    mask-image: radial-gradient(circle at center, black 24%, transparent 85%);
    opacity: 0.32;
}

.landing-sidebar {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 24px;
    min-height: 100vh;
    padding: 28px 22px;
    border-right: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(6, 12, 18, 0.44);
    backdrop-filter: blur(16px);
}

.landing-brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-family: "Sora", "Segoe UI", sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.04em;
}

.landing-brand img {
    width: 34px;
    height: 34px;
    border-radius: 10px;
}

.landing-nav,
.landing-sidebar-tools {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.landing-nav-link {
    display: inline-flex;
    align-items: center;
    min-height: 40px;
    color: rgba(230, 240, 248, 0.7);
    font-size: 0.95rem;
    letter-spacing: 0.04em;
    transition: color 180ms ease, transform 180ms ease;
}

.landing-nav-link:hover,
.landing-nav-link.active {
    color: #ffffff;
    transform: translateX(4px);
}

.landing-sidebar-meta {
    display: flex;
    flex-direction: column;
    gap: 4px;
    color: rgba(206, 222, 235, 0.68);
    font-size: 0.86rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.landing-stage {
    position: relative;
    min-height: 100vh;
    min-height: 100dvh;
    display: grid;
    place-items: center;
    padding: 48px;
}

.landing-center {
    width: min(100%, 860px);
    text-align: center;
}

.landing-kicker {
    margin: 0 0 18px;
    color: rgba(182, 215, 235, 0.78);
    font-size: 0.86rem;
    letter-spacing: 0.42em;
    text-transform: uppercase;
}

.landing-center h1 {
    margin: 0;
    font-family: "Sora", "Segoe UI", sans-serif;
    font-size: clamp(4.2rem, 12vw, 9.5rem);
    font-weight: 800;
    letter-spacing: -0.08em;
    line-height: 0.92;
    color: #f7fbff;
    text-shadow: 0 0 28px rgba(109, 203, 255, 0.15);
}

.landing-subtitle {
    margin: 18px auto 0;
    max-width: 34rem;
    color: rgba(220, 231, 238, 0.82);
    font-size: clamp(1rem, 2vw, 1.16rem);
    line-height: 1.7;
}

.landing-inline-links {
    margin-top: 30px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 14px;
    color: rgba(214, 228, 238, 0.86);
    font-size: 0.96rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.landing-inline-links a {
    transition: color 180ms ease;
}

.landing-inline-links a:hover {
    color: #ffffff;
}

.landing-inline-links span {
    width: 36px;
    height: 1px;
    background: rgba(255, 255, 255, 0.22);
}

@keyframes driftA {
    0%,
    100% {
        transform: translate3d(0, 0, 0) scale(1);
    }

    50% {
        transform: translate3d(-40px, 28px, 0) scale(1.08);
    }
}

@keyframes driftB {
    0%,
    100% {
        transform: translate3d(0, 0, 0) scale(1);
    }

    50% {
        transform: translate3d(36px, -30px, 0) scale(1.06);
    }
}

@keyframes beamShift {
    0%,
    100% {
        transform: rotate(10deg) translateY(0);
        opacity: 0.58;
    }

    50% {
        transform: rotate(14deg) translateY(20px);
        opacity: 0.82;
    }
}

@media (max-width: 900px) {
    .landing-shell {
        grid-template-columns: 1fr;
        grid-template-rows: auto 1fr;
    }

    .landing-sidebar {
        min-height: auto;
        padding: 18px 18px 12px;
        border-right: 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .landing-nav,
    .landing-sidebar-tools {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 12px 18px;
    }

    .landing-sidebar-meta {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 8px 18px;
    }

    .landing-stage {
        min-height: calc(100dvh - 180px);
        padding: 40px 24px;
    }
}

@media (max-width: 640px) {
    .landing-sidebar {
        gap: 18px;
        padding: 16px 14px 12px;
    }

    .landing-brand {
        font-size: 1rem;
    }

    .landing-nav,
    .landing-sidebar-tools {
        gap: 8px 14px;
    }

    .landing-nav-link {
        width: 100%;
        min-height: 32px;
        font-size: 0.88rem;
    }

    .landing-stage {
        min-height: calc(100dvh - 210px);
        padding: 32px 18px;
    }

    .landing-kicker {
        letter-spacing: 0.26em;
    }

    .landing-subtitle {
        max-width: 22rem;
    }

    .landing-inline-links {
        gap: 10px 12px;
        font-size: 0.84rem;
    }

    .landing-inline-links span {
        width: 18px;
    }
}