.mark-assistant{position:fixed;right:max(22px,env(safe-area-inset-right));bottom:max(22px,env(safe-area-inset-bottom));z-index:210;font-family:'DM Sans',system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif}
.mark-assistant [hidden]{display:none!important}
.mark-launcher{display:flex;align-items:center;gap:11px;min-height:58px;padding:7px 16px 7px 8px;border:1px solid var(--navy);border-radius:9px;background:var(--paper);color:var(--navy);box-shadow:var(--shadow-tight);cursor:pointer;text-align:left;transition:border-color .16s ease,transform .16s ease,box-shadow .16s ease}
.mark-launcher:hover{border-color:var(--purple);transform:translateY(-1px);box-shadow:0 13px 32px rgba(10,23,51,.13)}
.mark-launcher img{display:block;width:42px;height:42px;object-fit:contain}
.mark-launcher span{display:flex;flex-direction:column}.mark-launcher strong{font-size:.85rem}.mark-launcher small{color:var(--muted);font-size:.65rem}
.mark-panel{position:fixed;right:max(22px,env(safe-area-inset-right));bottom:max(92px,calc(70px + env(safe-area-inset-bottom)));display:grid;grid-template-rows:auto minmax(0,1fr) auto;width:min(390px,calc(100vw - 32px));height:min(620px,calc(100dvh - 118px));overflow:hidden;border:1px solid var(--line-strong);border-top:3px solid var(--navy);border-radius:10px;background:var(--paper);box-shadow:0 24px 70px rgba(10,23,51,.2)}
.mark-panel__header{display:grid;grid-template-columns:48px minmax(0,1fr) 40px;gap:12px;align-items:center;padding:14px 15px;border-bottom:1px solid var(--line);background:#f8f8f5}
.mark-panel__header img{display:block;width:48px;height:48px;object-fit:contain}
.mark-panel__header h2{margin:0;color:var(--navy);font-family:var(--font-display);font-size:1.35rem;line-height:1}.mark-panel__header p{margin:3px 0 0;color:var(--muted);font-size:.7rem}
.mark-panel__close{display:grid;place-items:center;width:40px;height:40px;border:0;background:transparent;color:var(--navy);font-size:1.55rem;cursor:pointer}
.mark-panel__messages{min-height:0;overflow-y:auto;padding:18px 16px 12px;overscroll-behavior:contain;scrollbar-gutter:stable}
.mark-message{max-width:91%;margin-bottom:17px}.mark-message>span{display:block;margin-bottom:5px;color:var(--purple);font-size:.58rem;font-weight:800;letter-spacing:.14em}.mark-message p{margin:0;padding-left:11px;border-left:2px solid var(--purple);color:var(--ink);font-size:.84rem;line-height:1.52;overflow-wrap:anywhere;white-space:pre-wrap}
.mark-message--user{margin-left:auto}.mark-message--user>span{color:var(--muted);text-align:right}.mark-message--user p{padding:9px 11px;border:0;background:var(--navy);color:#fff}
.mark-message__route{display:inline-flex;margin:9px 0 0 13px;color:var(--purple);font-size:.76rem;font-weight:700}.mark-message__route::after{content:" →"}
.mark-compose{padding:12px 14px calc(12px + env(safe-area-inset-bottom));border-top:1px solid var(--line);background:#f8f8f5}
.mark-compose textarea{display:block;width:100%;max-height:120px;resize:none;padding:10px 11px;border:1px solid var(--line-strong);border-radius:7px;background:#fff;color:var(--ink);font:inherit;font-size:.83rem;line-height:1.4;outline:none}.mark-compose textarea:focus{border-color:var(--purple);box-shadow:0 0 0 3px rgba(76,63,211,.13)}
.mark-compose__actions{display:flex;gap:12px;align-items:center;justify-content:space-between;margin-top:9px}.mark-compose__actions small{max-width:230px;color:var(--muted);font-size:.59rem;line-height:1.35}.mark-compose__actions button{min-width:72px;min-height:38px;border:1px solid var(--navy);border-radius:7px;background:var(--navy);color:#fff;font-weight:700;cursor:pointer}.mark-compose__actions button:disabled{cursor:wait;opacity:.55}
.mark-compose__status{min-height:1em;margin:6px 0 0;color:var(--muted);font-size:.65rem}.mark-compose__status.is-error{color:var(--red)}
.mark-backdrop{display:none}.mark-visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:720px){
  .mark-assistant{right:14px;bottom:max(14px,env(safe-area-inset-bottom))}
  .mark-launcher{gap:7px;min-height:44px;padding:4px 10px 4px 5px}.mark-launcher img{width:34px;height:34px}.mark-launcher strong{font-size:.78rem}.mark-launcher small{display:none}
  .mark-assistant.is-open .mark-launcher{visibility:hidden}
  .mark-backdrop{position:fixed;inset:0;z-index:211;display:block;border:0;background:rgba(11,23,54,.34)}
  .mark-panel{inset:auto 0 0;z-index:212;width:100%;height:min(86dvh,760px);border-right:0;border-bottom:0;border-left:0;border-radius:12px 12px 0 0;box-shadow:0 -18px 55px rgba(10,23,51,.2)}
  .mark-panel__header{padding:12px 14px}.mark-panel__messages{padding:17px 14px 10px}
  .mark-compose{padding-inline:14px}
  .mark-compose textarea{font-size:16px}.mark-compose__actions small{max-width:205px}
}
@media(prefers-reduced-motion:reduce){.mark-launcher{transition:none}}
@media print{.mark-assistant{display:none!important}}