/* Altarmak right-side topic navigation, 2026-10 */
.header-actions { margin-left: auto; }
.site-nav-rail {
    position: fixed;
    z-index: 1200;
    top: 42%;
    right: 16px;
    display: flex;
    width: 54px;
    min-height: 164px;
    align-items: center;
    flex-direction: column;
    justify-content: center;
    gap: 13px;
    padding: 13px 8px;
    border: 1px solid rgba(255,255,255,.3);
    border-radius: 18px;
    color: #fff;
    background: linear-gradient(160deg, rgba(16,42,67,.96), rgba(30,90,168,.94));
    box-shadow: 0 14px 34px rgba(10,32,53,.25), inset 0 1px 0 rgba(255,255,255,.18);
    cursor: pointer;
    backdrop-filter: blur(16px);
    transition: right .25s ease, transform .25s ease, box-shadow .25s ease;
}
.site-nav-rail:hover { right: 20px; transform: translateY(-2px); box-shadow: 0 18px 42px rgba(10,32,53,.3); }
.site-nav-rail:focus-visible,
.site-nav-close:focus-visible,
.site-nav-shortcut:focus-visible,
.site-nav-topic:focus-visible { outline: 3px solid #f1797d; outline-offset: 3px; }
.site-nav-rail-icon { display: grid; width: 34px; height: 34px; place-items: center; border-radius: 11px; color: #fff; background: rgba(255,255,255,.13); font-size: 15px; }
.site-nav-rail-label { writing-mode: vertical-rl; font-size: 11px; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.site-nav-rail-count { display: grid; min-width: 31px; height: 22px; place-items: center; border-radius: 999px; color: #153b62; background: #fff; font-size: 11px; font-weight: 900; }
.site-nav-backdrop { position: fixed; z-index: 1240; inset: 0; background: rgba(7,22,38,.46); opacity: 0; backdrop-filter: blur(3px); transition: opacity .24s ease; }
.site-nav-backdrop[hidden] { display: none; }
.site-nav-backdrop.is-visible { opacity: 1; }
.site-nav-panel {
    position: fixed;
    z-index: 1250;
    top: 14px;
    right: 14px;
    bottom: 14px;
    display: flex;
    width: min(390px, calc(100vw - 28px));
    flex-direction: column;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,.78);
    border-radius: 24px;
    color: #20394f;
    background: rgba(250,252,254,.96);
    box-shadow: 0 28px 90px rgba(5,21,37,.32);
    backdrop-filter: blur(24px) saturate(145%);
    transform: translateX(calc(100% + 28px));
    visibility: hidden;
    transition: transform .28s cubic-bezier(.2,.75,.25,1), visibility .28s;
}
.site-nav-panel.is-open { transform: translateX(0); visibility: visible; }
.site-nav-panel-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; padding: 24px 24px 16px; }
.site-nav-kicker { color: #c9343b; font-size: 10px; font-weight: 900; letter-spacing: .16em; }
.site-nav-panel-head h2 { margin: 5px 0 0; color: #102a43; font-size: 22px; font-weight: 800; letter-spacing: -.035em; }
.site-nav-close { display: grid; width: 40px; height: 40px; flex: 0 0 40px; place-items: center; border: 1px solid #dce5ed; border-radius: 13px; color: #27465f; background: #fff; cursor: pointer; font-size: 16px; }
.site-nav-shortcuts { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 8px; padding: 0 20px 15px; }
.site-nav-shortcut { display: flex; min-height: 57px; flex-direction: column; justify-content: center; gap: 5px; padding: 9px 10px; border: 1px solid #e5ebf0; border-radius: 13px; color: #35536d; background: rgba(255,255,255,.8); font-size: 11px; font-weight: 750; text-decoration: none; transition: border-color .18s ease, color .18s ease, transform .18s ease; }
.site-nav-shortcut i { color: #1e5aa8; font-size: 14px; }
.site-nav-shortcut:hover { transform: translateY(-1px); border-color: #9eb9d2; color: #173958; }
.site-nav-guide-link { display: flex; min-height: 45px; align-items: center; justify-content: space-between; gap: 12px; margin: 0 20px 14px; padding: 0 14px; border: 1px solid rgba(30,90,168,.18); border-radius: 13px; color: #17437d; background: linear-gradient(100deg, #edf4fb, #fff); font-size: 13px; font-weight: 800; text-decoration: none; }
.site-nav-guide-link span { display: flex; align-items: center; gap: 9px; }
.site-nav-guide-link span i { color: #c9343b; }
.site-nav-search { display: flex; min-height: 46px; align-items: center; gap: 10px; margin: 0 20px 7px; padding: 0 12px; border: 1px solid #d9e3ec; border-radius: 13px; color: #6c8093; background: #fff; }
.site-nav-search:focus-within { border-color: #1e5aa8; box-shadow: 0 0 0 3px rgba(30,90,168,.11); }
.site-nav-search > i { font-size: 13px; }
.site-nav-search input { width: 100%; min-width: 0; border: 0; outline: 0; color: #173958; background: transparent; font: inherit; font-size: 13px; }
.site-nav-search input::placeholder { color: #8a9bac; }
.site-nav-search kbd { display: grid; width: 22px; height: 22px; flex: 0 0 22px; place-items: center; border: 1px solid #e0e7ed; border-radius: 6px; color: #8797a6; background: #f7f9fb; font: 11px ui-monospace, monospace; }
.site-nav-result-count { margin: 0; padding: 0 22px 9px; color: #7a8c9d; font-size: 11px; font-weight: 700; }
.site-nav-topics { flex: 1 1 auto; min-height: 0; overflow: auto; padding: 0 16px 12px; overscroll-behavior: contain; scrollbar-color: #c5d2df transparent; scrollbar-width: thin; }
.site-nav-group { margin: 0 0 8px; overflow: hidden; border: 1px solid #e3eaf0; border-radius: 15px; background: rgba(255,255,255,.84); }
.site-nav-group[hidden], .site-nav-topic[hidden] { display: none !important; }
.site-nav-group summary { display: flex; min-height: 55px; align-items: center; gap: 10px; padding: 8px 12px; color: #173958; cursor: pointer; list-style: none; }
.site-nav-group summary::-webkit-details-marker { display: none; }
.site-nav-group summary:hover { background: #f7f9fb; }
.site-nav-group-icon { display: grid; width: 34px; height: 34px; flex: 0 0 34px; place-items: center; border-radius: 11px; color: #1e5aa8; background: #eaf2fb; }
.site-nav-group:nth-child(3) .site-nav-group-icon { color: #bd333b; background: #fff0f0; }
.site-nav-group-name { flex: 1; font-size: 13px; font-weight: 850; }
.site-nav-group-count { color: #8293a2; font-size: 11px; font-weight: 800; }
.site-nav-chevron { color: #8293a2; font-size: 11px; transition: transform .18s ease; }
.site-nav-group[open] .site-nav-chevron { transform: rotate(180deg); }
.site-nav-topic-links { display: grid; grid-template-columns: 1fr; max-height: 330px; overflow: auto; padding: 0 12px 10px 56px; }
.site-nav-topic { padding: 8px 5px; border-top: 1px solid #eef2f5; color: #526b80; font-size: 12px; line-height: 1.4; text-decoration: none; }
.site-nav-topic:hover { color: #17437d; }
.site-nav-panel-foot { display: flex; min-height: 48px; align-items: center; justify-content: space-between; gap: 10px; padding: 0 20px; border-top: 1px solid #e7edf2; color: #728597; background: rgba(255,255,255,.82); font-size: 11px; }
.site-nav-panel-foot span { display: flex; align-items: center; gap: 6px; }
.site-nav-panel-foot span i { color: #3c9864; }
.site-nav-panel-foot a { color: #1e5aa8; font-weight: 800; text-decoration: none; }
body.site-nav-open { overflow: hidden; }
@media (max-width: 767px) {
    .site-nav-rail { top: auto; right: 10px; bottom: 108px; width: 47px; min-height: 141px; gap: 10px; padding: 10px 6px; border-radius: 16px; }
    .site-nav-rail:hover { right: 10px; transform: none; }
    .site-nav-rail-icon { width: 31px; height: 31px; }
    .site-nav-rail-label { font-size: 10px; }
    .site-nav-panel { inset: 0 0 0 auto; width: min(100%, 440px); border-radius: 0; }
    .site-nav-panel-head { padding: 20px 18px 14px; }
    .site-nav-shortcuts { padding-inline: 16px; }
    .site-nav-guide-link { margin-inline: 16px; }
    .site-nav-search { margin-inline: 16px; }
    .site-nav-result-count { padding-inline: 18px; }
    .site-nav-topics { padding-inline: 12px; }
    .site-nav-panel-foot { padding-inline: 16px; }
}
@media (prefers-reduced-motion: reduce) {
    .site-nav-rail, .site-nav-backdrop, .site-nav-panel, .site-nav-shortcut, .site-nav-chevron { transition-duration: .01ms; }
}