:root {
    --upgrade-bg: #090d1d;
    --upgrade-surface: #11172b;
    --upgrade-ink: #f8fafc;
    --upgrade-muted: #a6afc2;
    --upgrade-violet: #8368ff;
    --upgrade-teal: #32d5c3;
    --upgrade-line: rgba(255, 255, 255, .11);
}

* { box-sizing: border-box; }

html { min-height: 100%; }

body.upgrade-page {
    min-height: 100vh;
    margin: 0;
    color: var(--upgrade-ink);
    background:
        radial-gradient(circle at 78% 20%, rgba(131, 104, 255, .2), transparent 28rem),
        radial-gradient(circle at 10% 90%, rgba(50, 213, 195, .12), transparent 24rem),
        var(--upgrade-bg);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.upgrade-shell {
    position: relative;
    display: flex;
    min-height: 100vh;
    padding: 0 clamp(1.25rem, 5vw, 5rem);
    overflow: hidden;
    flex-direction: column;
}

.upgrade-header,
.upgrade-footer {
    position: relative;
    z-index: 3;
    display: flex;
    width: 100%;
    align-items: center;
    justify-content: space-between;
}

.upgrade-header {
    min-height: 6.5rem;
    border-bottom: 1px solid var(--upgrade-line);
}

.upgrade-brand {
    display: inline-flex;
    color: inherit;
    align-items: center;
    gap: .85rem;
    font-size: .88rem;
    font-weight: 800;
    letter-spacing: .1em;
    text-decoration: none;
}

.upgrade-brand strong { color: var(--upgrade-muted); font-weight: 500; }

.upgrade-brand-mark {
    width: 2.65rem;
    height: 2.65rem;
    border-radius: .85rem;
    object-fit: cover;
    box-shadow: 0 12px 32px rgba(91, 71, 212, .34);
}

.upgrade-status {
    display: inline-flex;
    padding: .6rem .85rem;
    border: 1px solid var(--upgrade-line);
    border-radius: 999px;
    color: #cbd2df;
    align-items: center;
    gap: .65rem;
    font-size: .76rem;
    font-weight: 700;
}

.upgrade-status i {
    width: .48rem;
    height: .48rem;
    border-radius: 50%;
    background: var(--upgrade-teal);
    box-shadow: 0 0 0 .32rem rgba(50, 213, 195, .12);
}

.upgrade-content {
    position: relative;
    z-index: 2;
    display: grid;
    width: min(84rem, 100%);
    margin: auto;
    padding: clamp(3.5rem, 8vh, 7rem) 0;
    grid-template-columns: minmax(0, 1.05fr) minmax(24rem, .95fr);
    gap: clamp(3rem, 8vw, 8rem);
    align-items: center;
}

.upgrade-kicker {
    margin: 0;
    color: #b8afff;
    font-size: .76rem;
    font-weight: 800;
    letter-spacing: .17em;
    text-transform: uppercase;
}

.upgrade-copy h1 {
    max-width: 48rem;
    margin: 1.1rem 0 1.5rem;
    font-size: clamp(3.5rem, 7vw, 7.2rem);
    line-height: .92;
    letter-spacing: -.065em;
}

.upgrade-lead {
    max-width: 43rem;
    margin: 0;
    color: var(--upgrade-muted);
    font-size: clamp(1.05rem, 1.5vw, 1.28rem);
    line-height: 1.75;
}

.upgrade-actions {
    display: flex;
    margin-top: 2.2rem;
    align-items: center;
    gap: 1.25rem;
    flex-wrap: wrap;
}

.upgrade-button {
    display: inline-flex;
    min-height: 3.4rem;
    padding: 0 1.3rem;
    border-radius: .9rem;
    color: #080c19;
    background: #fff;
    align-items: center;
    gap: .8rem;
    font-size: .88rem;
    font-weight: 800;
    text-decoration: none;
    transition: transform .2s ease, box-shadow .2s ease;
}

.upgrade-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 18px 40px rgba(0, 0, 0, .28);
}

.upgrade-email { color: #b8c0d0; font-size: .88rem; }

.upgrade-services {
    display: flex;
    margin-top: 3rem;
    color: #778196;
    gap: .7rem 1.5rem;
    flex-wrap: wrap;
    font-size: .75rem;
    font-weight: 700;
}

.upgrade-services span { display: inline-flex; align-items: center; gap: .6rem; }
.upgrade-services span::before { content: ""; width: .28rem; height: .28rem; border-radius: 50%; background: var(--upgrade-violet); }

.upgrade-visual {
    position: relative;
    min-height: min(34rem, 58vh);
    border: 1px solid var(--upgrade-line);
    border-radius: 2rem;
    background: linear-gradient(145deg, rgba(255, 255, 255, .065), rgba(255, 255, 255, .015));
    overflow: hidden;
    box-shadow: 0 35px 100px rgba(0, 0, 0, .3);
}

.upgrade-grid {
    position: absolute;
    inset: 0;
    opacity: .38;
    background-image:
        linear-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px);
    background-size: 3.2rem 3.2rem;
    mask-image: radial-gradient(circle, #000, transparent 75%);
}

.upgrade-core {
    position: absolute;
    top: 50%;
    left: 50%;
    display: flex;
    width: 12rem;
    height: 12rem;
    border: 1px solid rgba(255, 255, 255, .16);
    border-radius: 2.3rem;
    background: linear-gradient(145deg, rgba(131, 104, 255, .24), rgba(50, 213, 195, .09)), #11172b;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    transform: translate(-50%, -50%) rotate(-5deg);
    box-shadow: 0 30px 65px rgba(0, 0, 0, .34);
}

.upgrade-core-label { color: #bdb5ff; font-size: .7rem; font-weight: 900; letter-spacing: .22em; }
.upgrade-core strong { margin-top: .3rem; font-size: 2rem; letter-spacing: -.04em; }
.upgrade-core small { margin-top: .45rem; color: #8f9aaf; }

.upgrade-orbit {
    position: absolute;
    top: 50%;
    left: 50%;
    border: 1px solid rgba(255, 255, 255, .13);
    border-radius: 50%;
    transform: translate(-50%, -50%);
}

.upgrade-orbit-one { width: 20rem; height: 20rem; animation: upgrade-spin 14s linear infinite; }
.upgrade-orbit-two { width: 28rem; height: 28rem; animation: upgrade-spin 22s linear infinite reverse; }

.upgrade-orbit span {
    position: absolute;
    top: 50%;
    right: -.4rem;
    width: .8rem;
    height: .8rem;
    border-radius: 50%;
    background: var(--upgrade-teal);
    box-shadow: 0 0 1.6rem rgba(50, 213, 195, .8);
}

.upgrade-orbit-two span { top: 12%; right: 17%; background: var(--upgrade-violet); box-shadow: 0 0 1.6rem rgba(131, 104, 255, .8); }

.upgrade-node {
    position: absolute;
    display: grid;
    width: 2.75rem;
    height: 2.75rem;
    border: 1px solid var(--upgrade-line);
    border-radius: .85rem;
    color: #98a3b8;
    background: rgba(9, 13, 29, .82);
    place-items: center;
    font-size: .68rem;
    font-weight: 800;
}

.node-one { top: 14%; left: 15%; }
.node-two { right: 11%; bottom: 18%; }
.node-three { bottom: 10%; left: 24%; }

.upgrade-ambient { position: absolute; border-radius: 50%; filter: blur(10px); pointer-events: none; }
.upgrade-ambient-one { width: 24rem; height: 24rem; top: -15rem; right: 3%; background: rgba(131, 104, 255, .12); }
.upgrade-ambient-two { width: 20rem; height: 20rem; bottom: -14rem; left: 8%; background: rgba(50, 213, 195, .08); }

.upgrade-footer {
    min-height: 4.5rem;
    border-top: 1px solid var(--upgrade-line);
    color: #717c92;
    font-size: .73rem;
}

@keyframes upgrade-spin {
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

@media (max-width: 900px) {
    .upgrade-content { grid-template-columns: 1fr; }
    .upgrade-visual { min-height: 26rem; }
}

@media (max-width: 620px) {
    .upgrade-shell { padding-inline: 1.1rem; }
    .upgrade-header { min-height: 5.5rem; }
    .upgrade-status { width: .7rem; height: .7rem; padding: 0; border: 0; font-size: 0; }
    .upgrade-status i { width: .58rem; height: .58rem; }
    .upgrade-copy h1 { font-size: clamp(3.2rem, 16vw, 4.8rem); }
    .upgrade-content { padding: 3.5rem 0; gap: 3.5rem; }
    .upgrade-visual { min-height: 22rem; border-radius: 1.5rem; }
    .upgrade-core { width: 10rem; height: 10rem; }
    .upgrade-orbit-one { width: 17rem; height: 17rem; }
    .upgrade-orbit-two { width: 23rem; height: 23rem; }
    .upgrade-footer { align-items: flex-start; justify-content: center; flex-direction: column; gap: .15rem; }
}

@media (prefers-reduced-motion: reduce) {
    .upgrade-orbit { animation: none; }
    .upgrade-button { transition: none; }
}