.technical-support { max-width: none; }
.technical-support[open] { display: grid; grid-template-rows: auto minmax(0, 1fr) auto; overflow: hidden; }
.technical-support > header { border-bottom: 1px solid var(--line); }
.technical-support > header > div { min-width: 0; }
.technical-support > header p { margin: 6px 0 0; color: var(--muted); font-size: 13px; }
.technical-support__messages { min-height: 0; overflow-y: auto; overscroll-behavior: contain; padding: 24px; display: flex; flex-direction: column; gap: 20px; }
.technical-support__welcome { margin: auto 0; padding: 24px 0; }
.technical-support__welcome > svg { color: var(--muted); width: 26px; height: 26px; }
.technical-support__welcome h3 { margin: 16px 0 10px; font-size: 19px; }
.technical-support__welcome p { color: var(--muted); font-size: 14px; line-height: 1.7; }
.technical-support__welcome .technical-support__privacy { font-size: 12px; }
.technical-support__message { min-width: 0; overflow-wrap: anywhere; font-size: 14px; line-height: 1.7; }
.technical-support__message > strong { font-size: 12px; color: var(--muted); }
.technical-support__message > p { margin: 8px 0 0; white-space: pre-wrap; }
.technical-support__message--user { border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--canvas); padding: 14px 16px; }
.technical-support__message pre { white-space: pre-wrap; }
.technical-support__message ul, .technical-support__message ol { padding-left: 22px; }
.technical-support__sources { margin-top: 16px; padding-top: 12px; border-top: 1px solid var(--line); display: grid; gap: 8px; }
.technical-support__sources small { color: var(--muted); font-size: 11px; }
.technical-support__sources summary { cursor: pointer; color: var(--action); font-size: 12px; }
.technical-support__sources details p { white-space: pre-wrap; font-size: 12px; color: var(--ink-soft); }
.technical-support__hint { margin: 0; color: var(--muted); font-size: 13px; }
.technical-support__composer { padding: 20px 24px; padding-bottom: max(20px, env(safe-area-inset-bottom)); border-top: 1px solid var(--line); display: grid; gap: 16px; }
.technical-support__composer > p { margin: 0; font-size: 13px; line-height: 1.6; }
.technical-support__composer textarea { resize: vertical; min-height: 78px; max-height: 180px; }
.technical-support__actions { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.technical-support__actions small { color: var(--muted); font-size: 11px; line-height: 1.5; max-width: 230px; }
.technical-support__actions button { flex-shrink: 0; }
@media (max-width: 640px) {
  .technical-support { width: calc(100vw - 16px); margin: 8px 8px 8px auto; height: calc(100dvh - 16px); max-height: calc(100dvh - 16px); border-radius: var(--radius-lg); }
  .technical-support > header, .technical-support__messages, .technical-support__composer { padding: 20px; }
  .technical-support h2 { font-size: 18px; }
  .technical-support__actions { gap: 12px; }
}