/* Portal 404 */
.portal-error-main {
    padding: 56px 0 88px;
    background: radial-gradient(ellipse at 12% 30%, rgb(8 79 185 / 8%), transparent 52%), var(--portal-soft);
}
.portal-error-card {
    display: grid;
    grid-template-columns: 1fr 1.15fr;
    align-items: center;
    gap: 64px;
    padding: 64px;
    border: 1px solid var(--portal-border);
    border-radius: 32px;
    background: var(--portal-surface);
    box-shadow: 0 24px 70px rgb(15 68 148 / 7%);
}
.portal-error-visual {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 320px;
    isolation: isolate;
}
.portal-error-orbit {
    position: absolute;
    z-index: -1;
    width: 280px;
    height: 280px;
    border: 1px dashed rgb(8 79 185 / 25%);
    border-radius: 50%;
    background: radial-gradient(circle, rgb(8 79 185 / 8%), transparent 70%);
}
.portal-error-orbit::after {
    content: '';
    position: absolute;
    top: 32px;
    right: 24px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--portal-accent);
    box-shadow: -244px 168px 0 -4px #26bcb5;
}
.portal-error-number { font-size: clamp(100px, 12vw, 160px); font-weight: 800; line-height: 1.2; letter-spacing: -10px; color: var(--portal-primary); }
.portal-error-compass {
    position: absolute;
    right: 12px;
    bottom: 46px;
    display: grid;
    place-items: center;
    width: 78px;
    height: 78px;
    border: 6px solid var(--portal-surface);
    border-radius: 24px;
    background: var(--portal-accent);
    color: #0f4494;
    transform: rotate(12deg);
    box-shadow: 0 12px 24px rgb(15 68 148 / 12%);
}
.portal-error-compass svg { width: 58px; height: 58px; }
.portal-error-caption { margin-top: 22px; color: var(--portal-muted); font-size: 13px; }
.portal-error-eyebrow { color: var(--portal-primary); font-size: 11px; font-weight: 700; letter-spacing: 2px; }
.portal-error-copy h1 { margin: 16px 0 20px; color: var(--portal-text); font-size: clamp(30px, 3.4vw, 44px); font-weight: 700; line-height: 1.25; letter-spacing: -1.5px; }
.portal-error-copy p { margin: 0; color: var(--portal-muted); font-size: 15px; line-height: 1.9; }
.portal-error-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.portal-error-button { display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 14px 20px; border: 1px solid var(--portal-border); border-radius: 12px; font-size: 13px; font-weight: 600; text-decoration: none; transition: transform .2s, box-shadow .2s; }
.portal-error-primary { background: var(--portal-primary); border-color: var(--portal-primary); color: #fff; }
.portal-error-primary:hover { color: #fff; box-shadow: 0 8px 20px rgb(8 79 185 / 20%); transform: translateY(-2px); }
.portal-error-secondary { background: var(--portal-surface); color: var(--portal-text); }
.portal-error-secondary:hover { color: var(--portal-primary); border-color: var(--portal-primary); }
.portal-error-button:focus-visible, .portal-error-header-link:focus-visible { outline: 3px solid var(--portal-primary); outline-offset: 4px; }
.portal-error-note { display: flex; gap: 9px; margin-top: 28px; padding-top: 24px; border-top: 1px solid var(--portal-border); color: var(--portal-muted); font-size: 12px; }
.portal-error-note > span { color: var(--portal-primary); }
.portal-error-header-link { display: inline-flex; align-items: center; gap: 10px; color: var(--portal-text); font-size: 13px; font-weight: 600; }
.portal-error-header-link:hover { color: var(--portal-primary); }
html.dark-scheme .portal-error-primary,
html.dark-scheme .portal-error-primary:hover { color: #10223d; }
@media (max-width: 991px) {
    .portal-error-main { padding: 38px 0 56px; }
    .portal-error-card { gap: 30px; padding: 36px; }
    .portal-error-orbit { width: 230px; height: 230px; }
    .portal-error-compass { right: 0; }
}
@media (max-width: 767px) {
    .portal-error-main { padding: 20px 0 40px; }
    .portal-error-card { grid-template-columns: minmax(0, 1fr); gap: 16px; padding: 24px; border-radius: 24px; text-align: center; }
    .portal-error-visual { min-height: 230px; }
    .portal-error-number { font-size: 120px; }
    .portal-error-compass { right: calc(50% - 140px); bottom: 20px; width: 62px; height: 62px; border-radius: 18px; }
    .portal-error-compass svg { width: 44px; height: 44px; }
    .portal-error-copy h1 { letter-spacing: -1px; }
    .portal-error-actions, .portal-error-note { justify-content: center; }
    .portal-error-button { width: 100%; }
    .portal-error-header-link { display: none; }
}
@media (prefers-reduced-motion: reduce) {
    .portal-error-button { transition: none; }
}