.bn-sup{background:var(--bn-bg);color:var(--bn-text);font-family:var(--bn-sans);padding-bottom:64px;}.bn-sup__hero{padding:48px 0 32px;background:radial-gradient(80% 90% at 85% 0%,color-mix(in srgb,var(--bn-violet) 20%,transparent),transparent 60%),radial-gradient(60% 70% at 0% 100%,color-mix(in srgb,var(--bn-mint) 12%,transparent),transparent 60%);}.bn-sup__eyebrow{display:inline-flex;align-items:center;gap:8px;margin:0;font:700 0.76rem var(--bn-sans);letter-spacing:0.14em;text-transform:uppercase;color:var(--bn-violet);}.bn-sup__title{margin:10px 0 8px;font:700 clamp(2rem,5vw,3rem)/1.05 var(--bn-display);letter-spacing:-0.03em;}.bn-sup__lead{margin:0;max-width:640px;color:var(--bn-muted);font-size:1rem;line-height:1.55;}.bn-sup__ask{display:flex;gap:10px;margin-top:22px;max-width:760px;}.bn-sup__ask .bn-input{height:54px;font-size:1rem;border-radius:16px;}.bn-sup__ask .bn-btn{height:54px;}@media (max-width:559px){.bn-sup__ask{flex-direction:column;}}.bn-sup__mode{display:flex;align-items:center;gap:8px;margin:12px 0 0;font-size:0.8rem;color:var(--bn-faint);}.bn-sup__mode span{width:8px;height:8px;border-radius:50%;background:var(--bn-amber);flex:none;}.bn-sup__mode span.is-live{background:var(--bn-mint);box-shadow:0 0 0 4px color-mix(in srgb,var(--bn-mint) 22%,transparent);}.bn-sup__layout{display:grid;gap:24px;margin-top:8px;}@media (min-width:1024px){.bn-sup__layout{grid-template-columns:minmax(0,1fr) 320px;align-items:start;}}.bn-sup__main{display:grid;gap:18px;}.bn-sup__areas{display:grid;gap:10px;}@media (min-width:640px){.bn-sup__areas{grid-template-columns:repeat(2,1fr);}}@media (min-width:1200px){.bn-sup__areas{grid-template-columns:repeat(3,1fr);}}.bn-sup__area{display:grid;grid-template-columns:44px 1fr;gap:12px;align-items:center;padding:12px 14px;border-radius:16px;border:1px solid var(--bn-line);background:var(--bn-surface);color:var(--bn-text);text-align:left;cursor:pointer;font-family:var(--bn-sans);}.bn-sup__area[aria-selected="true"]{border-color:var(--bn-violet);background:var(--bn-violet-soft);}.bn-sup__area b{display:block;font-size:0.92rem;}.bn-sup__area small{font-size:0.78rem;color:var(--bn-muted);line-height:1.4;}.bn-sup__avatar{display:grid;place-items:center;width:44px;height:44px;border-radius:14px;color:#fff;font:700 1rem var(--bn-display);background:linear-gradient(135deg,var(--bn-violet),color-mix(in srgb,var(--bn-mint) 70%,var(--bn-violet)));}.bn-sup__avatar--sm{width:30px;height:30px;border-radius:10px;font-size:0.85rem;}.bn-sup__chips{display:flex;flex-wrap:wrap;gap:8px;}.bn-sup__thread{display:grid;gap:12px;}.bn-sup__msg{max-width:100%;}.bn-sup__msg--user{justify-self:end;max-width:80%;padding:10px 14px;border-radius:16px 16px 4px 16px;background:var(--bn-violet);color:#fff;font-size:0.92rem;}.bn-sup__msg--user p{margin:0;}.bn-sup__msg--assistant{padding:16px;border-radius:18px;background:var(--bn-surface);border:1px solid var(--bn-line);box-shadow:var(--bn-shadow);display:grid;gap:10px;}.bn-sup__msg--assistant > p{margin:0;font-size:0.92rem;line-height:1.55;}.bn-sup__who{display:flex;align-items:center;gap:8px;}.bn-sup__who b{font-size:0.88rem;}.bn-sup__who small{font-size:0.74rem;color:var(--bn-faint);}.bn-sup__article{padding:12px 14px;border-radius:14px;background:var(--bn-surface-2);}.bn-sup__article h3{margin:0 0 4px;font:700 0.95rem var(--bn-display);}.bn-sup__article p{margin:0;font-size:0.86rem;color:var(--bn-muted);line-height:1.5;}.bn-sup__article ol{margin:8px 0 0;padding-left:18px;display:grid;gap:4px;font-size:0.86rem;line-height:1.45;}.bn-sup__links{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px;}.bn-sup__feedback{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:0.82rem;color:var(--bn-muted);}.bn-sup__ticket{display:grid;gap:14px;padding:20px;border-radius:20px;background:var(--bn-surface);border:1px solid var(--bn-line);box-shadow:var(--bn-shadow);}.bn-sup__ticket h2{margin:0;font:700 1.2rem var(--bn-display);}.bn-sup__grid{display:grid;gap:12px;}@media (min-width:640px){.bn-sup__grid{grid-template-columns:1fr 1fr;}.bn-sup__wide{grid-column:1 / -1;}}.bn-sup__textarea{height:auto;padding:12px 14px;line-height:1.5;resize:vertical;}.bn-sup__trap{position:absolute;left:-9999px;width:1px;height:1px;opacity:0;}.bn-sup__actions{display:flex;justify-content:flex-end;gap:10px;}.bn-sup__muted{margin:0;font-size:0.82rem;color:var(--bn-muted);line-height:1.5;}.bn-sup__error{margin:0;padding:10px 12px;border-radius:12px;background:var(--bn-coral-soft);font-size:0.84rem;}.bn-sup__done{display:grid;grid-template-columns:24px 1fr;gap:12px;padding:16px;border-radius:16px;background:var(--bn-mint-soft);}.bn-sup__done i{color:var(--bn-mint);font-size:1.2rem;margin-top:2px;}.bn-sup__done b{display:block;}.bn-sup__done span{font-size:0.86rem;color:var(--bn-muted);}.bn-sup__side{display:grid;gap:14px;}@media (min-width:1024px){.bn-sup__side{position:sticky;top:90px;}}.bn-sup__card{padding:18px;border-radius:18px;background:var(--bn-surface);border:1px solid var(--bn-line);}.bn-sup__card h3{margin:0 0 10px;font:700 1rem var(--bn-display);}.bn-sup__tickets,.bn-sup__popular{list-style:none;margin:0;padding:0;display:grid;gap:10px;}.bn-sup__tickets b{display:block;font-size:0.86rem;}.bn-sup__tickets span{font-size:0.76rem;color:var(--bn-faint);}.bn-sup__tickets em{font-style:normal;font-weight:700;}.bn-sup__tickets .is-open,.bn-sup__tickets .is-in_progress{color:var(--bn-violet);}.bn-sup__tickets .is-waiting_customer{color:var(--bn-amber);}.bn-sup__tickets .is-resolved,.bn-sup__tickets .is-closed{color:var(--bn-mint);}.bn-sup__popular button{border:0;background:none;padding:0;color:var(--bn-text);font:600 0.86rem var(--bn-sans);text-align:left;cursor:pointer;}.bn-sup__popular button:hover{color:var(--bn-violet);}.bn-help{position:fixed;right:18px;bottom:18px;z-index:60;display:inline-flex;align-items:center;gap:8px;height:46px;padding:0 18px;border:0;border-radius:999px;background:var(--bn-violet,#3f6af2);color:#fff;font:700 0.88rem var(--bn-sans,sans-serif);cursor:pointer;box-shadow:0 14px 30px -12px rgba(63,106,242,0.7);}.bn-help:hover{filter:brightness(1.08);}.bn-help:focus-visible{outline:3px solid color-mix(in srgb,#3f6af2 45%,transparent);outline-offset:3px;}@media (max-width:639px){.bn-help{right:12px;bottom:12px;height:44px;width:44px;padding:0;justify-content:center;}.bn-help span{display:none;}}.bn-sup__reply{margin:6px 0 0;padding:8px 10px;border-radius:10px;background:var(--bn-surface-2);font-size:0.8rem;line-height:1.45;color:var(--bn-text);}body:has(.bn-tray) .bn-help{bottom:140px;}