/* ==========================================================================
   Páginas /chatgpt e /claude (templates/ia_pagina.php).
   Usa as cores do site (assets/css/site.css), então acompanha o tema claro e
   o escuro sozinha. Cada assistente tem uma cor própria (--ia-tom), usada só
   no lado "assistente" da cena; o lado do hub é o índigo da marca.
   Tudo aqui começa com .ia para não encostar em nenhuma outra página.
   ========================================================================== */
.ia { --ia-tom: #B4532A; --ia-hub: var(--brand-indigo-ink); --ia-raio: 18px; color: var(--ink-2); }
.ia-chatgpt { --ia-tom: #0B7A62; }
:root[data-theme="dark"] .ia-claude  { --ia-tom: #F0A37E; }
:root[data-theme="dark"] .ia-chatgpt { --ia-tom: #5ED4B3; }

.ia-in { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.ia-in-estreito { max-width: 820px; }
.ia a { color: var(--ia-hub); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
.ia :focus-visible { outline: 2px solid var(--brand-indigo); outline-offset: 3px; border-radius: 6px; }

/* ---------- botões ---------- */
.ia .ia-bt {
  display: inline-flex; align-items: center; justify-content: center; padding: 13px 22px; border-radius: 12px;
  font-size: .98rem; font-weight: 700; text-decoration: none; line-height: 1.2; text-align: center;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
}
.ia .ia-bt-pri { background: var(--grad-primary); color: #fff; box-shadow: 0 8px 22px rgba(79,70,229,.28); }
.ia .ia-bt-pri:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(79,70,229,.36); }
.ia .ia-bt-sec { color: var(--ink-1); border: 1px solid var(--line); background: var(--panel); }
.ia .ia-bt-sec:hover { border-color: var(--ia-hub); }
.ia .ia-bt-claro { color: #fff; border: 1px solid rgba(255,255,255,.28); }
.ia .ia-bt-claro:hover { border-color: #fff; }
.ia-acoes { display: flex; flex-wrap: wrap; gap: 12px; }
.ia-topo .ia-bt { padding: 12px 17px; font-size: .94rem; }

/* ---------- topo ---------- */
.ia-topo {
  padding: 132px 0 34px; background: var(--grad-mesh), var(--canvas-soft);
  border-bottom: 1px solid var(--line-soft); overflow: hidden;
}
.ia-topo-grade { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 52px; align-items: center; }
.ia-par { display: inline-flex; align-items: center; gap: 12px; font-size: .95rem; font-weight: 700; margin-bottom: 22px; }
.ia-par-a { color: var(--ia-hub); }
.ia-par-b { color: var(--ia-tom); }
.ia-par-fio { position: relative; width: 46px; height: 2px; border-radius: 2px; background: linear-gradient(90deg, var(--ia-hub), var(--ia-tom)); opacity: .55; }
.ia-par-fio i { position: absolute; top: -3px; left: 0; width: 8px; height: 8px; border-radius: 50%; background: var(--ia-hub); animation: iaVaiVem 3.4s ease-in-out infinite; }
@keyframes iaVaiVem { 0%, 8% { transform: translateX(0); background: var(--ia-hub); } 46%, 54% { transform: translateX(38px); background: var(--ia-tom); } 92%, 100% { transform: translateX(0); background: var(--ia-hub); } }
.ia-topo h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.55rem); font-weight: 800; line-height: 1.04; letter-spacing: -.038em;
  color: var(--ink-1); text-wrap: balance; margin-bottom: 20px;
}
.ia-lead { font-size: 1.1rem; line-height: 1.65; color: var(--ink-2); max-width: 54ch; margin-bottom: 28px; }
.ia-topo-nota { margin-top: 18px; font-size: .88rem; color: var(--ink-3); }

/* ---------- a cena: conversa, fio e hub ---------- */
.ia-cena { display: grid; grid-template-columns: minmax(0, 1fr) 52px 232px; align-items: stretch; }
.ia-chat, .ia-hub { border: 1px solid var(--line); border-radius: var(--ia-raio); }
.ia-chat { background: var(--panel); box-shadow: var(--shadow-lg); display: flex; flex-direction: column; min-width: 0; }
.ia-chat-topo { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 13px 16px; border-bottom: 1px solid var(--line-soft); font-size: .82rem; }
.ia-chat-marca { display: inline-flex; align-items: center; gap: 8px; font-weight: 800; color: var(--ink-1); }
.ia-chat-marca i { width: 10px; height: 10px; border-radius: 50%; background: var(--ia-tom); }
.ia-chat-lig { color: var(--brand-green-ink); font-weight: 600; white-space: nowrap; }
.ia-chat-lig i { font-size: .72rem; margin-right: 3px; }
.ia-chat-corpo { flex: 1 1 auto; padding: 18px 16px 6px; min-height: 372px; overflow: hidden; }
.ia-fala { display: flex; flex-direction: column; gap: 12px; }
.ia-fala[hidden] { display: none; }
.ia-q { align-self: flex-end; max-width: 88%; padding: 10px 14px; border-radius: 16px 16px 4px 16px; background: var(--canvas-tint-2); color: var(--ink-1); font-weight: 600; font-size: .95rem; line-height: 1.4; min-height: 2.6em; }
.ia-fala.is-digitando .ia-q-tx::after { content: ''; display: inline-block; width: 2px; height: 1.05em; margin-left: 2px; vertical-align: -2px; background: var(--ink-1); animation: iaCursor .8s steps(1) infinite; }
@keyframes iaCursor { 50% { opacity: 0; } }
.ia-uso { display: flex; align-items: center; gap: 8px; font-size: .8rem; color: var(--ink-3); opacity: 0; }
.ia-uso i { color: var(--ia-hub); font-size: .74rem; }
.ia-uso b { color: var(--ink-2); font-weight: 700; }
/* as transições ficam só na ENTRADA: ao trocar de cena, o que estava some na hora */
.ia-fala.is-consultando .ia-uso, .ia-fala.is-pronta .ia-uso { opacity: 1; transition: opacity .3s ease; }
.ia-fala.is-consultando .ia-uso span { background: linear-gradient(90deg, var(--ink-3) 30%, var(--ink-1) 50%, var(--ink-3) 70%); background-size: 220% 100%; -webkit-background-clip: text; background-clip: text; color: transparent; animation: iaBrilho 1.1s linear infinite; }
.ia-fala.is-consultando .ia-uso b { color: inherit; }
@keyframes iaBrilho { from { background-position: 110% 0; } to { background-position: -110% 0; } }
.ia-r { color: var(--ink-1); font-size: .97rem; line-height: 1.55; opacity: 0; transform: translateY(8px); }
.ia-fala.is-pronta .ia-r { opacity: 1; transform: none; transition: opacity .45s ease, transform .45s ease; }
.ia-r b { font-weight: 800; font-variant-numeric: tabular-nums; }
.ia-r ul { list-style: none; margin-top: 14px; }
.ia-barras li { display: grid; grid-template-columns: 104px minmax(0, 1fr) auto; align-items: center; gap: 10px; padding: 5px 0; font-size: .85rem; }
.ia-barras span { color: var(--ink-2); }
.ia-barras i { display: block; height: 8px; border-radius: 99px; background: var(--grad-primary); width: 0; }
.ia-fala.is-pronta .ia-barras i { width: var(--w); transition: width .9s cubic-bezier(.2,.7,.2,1); }
.ia-barras li:nth-child(2) i { transition-delay: .08s; } .ia-barras li:nth-child(3) i { transition-delay: .16s; } .ia-barras li:nth-child(4) i { transition-delay: .24s; }
.ia-barras b { font-size: .82rem; }
.ia-barras b, .ia-linhas b { white-space: nowrap; }
.ia-linhas li { display: grid; grid-template-columns: minmax(0, 1fr) auto auto; gap: 14px; align-items: baseline; padding: 9px 0; border-top: 1px solid var(--line-soft); font-size: .88rem; }
.ia-linhas em { font-style: normal; color: var(--ink-3); font-size: .8rem; }
.ia-cartao { margin-top: 14px; padding: 13px 15px; border: 1px solid var(--line); border-radius: 12px; background: var(--canvas-soft); display: grid; gap: 3px; }
.ia-cartao small { color: var(--ia-hub); font-weight: 700; font-size: .74rem; }
.ia-cartao b { font-size: .95rem; }
.ia-cartao span { color: var(--ink-3); font-size: .82rem; }
.ia-r-nota { margin-top: 12px; font-size: .82rem; color: var(--ink-3); }
.ia-chat-campo { margin: 0 14px 14px; padding: 9px 9px 9px 16px; display: flex; align-items: center; justify-content: space-between; border: 1px solid var(--line); border-radius: 999px; color: var(--ink-4); font-size: .86rem; }
.ia-chat-campo i { width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center; background: var(--ink-1); color: var(--canvas); font-size: .72rem; }

.ia-fio { position: relative; align-self: center; height: 2px; background: repeating-linear-gradient(90deg, var(--ink-4) 0 5px, transparent 5px 10px); opacity: .7; }
.ia-fio i { position: absolute; top: -5px; left: -6px; width: 12px; height: 12px; border-radius: 50%; opacity: 0; background: var(--ia-tom); box-shadow: 0 0 0 5px color-mix(in srgb, var(--ia-tom) 18%, transparent); }
.ia-cena.fio-vai .ia-fio i { animation: iaVai .95s cubic-bezier(.5,0,.3,1) forwards; }
.ia-cena.fio-volta .ia-fio i { background: var(--brand-indigo); box-shadow: 0 0 0 5px rgba(99,102,241,.18); animation: iaVolta .95s cubic-bezier(.5,0,.3,1) forwards; }
@keyframes iaVai { 0% { left: -6px; opacity: 0; } 12% { opacity: 1; } 88% { opacity: 1; } 100% { left: calc(100% - 6px); opacity: 0; } }
@keyframes iaVolta { 0% { left: calc(100% - 6px); opacity: 0; } 12% { opacity: 1; } 88% { opacity: 1; } 100% { left: -6px; opacity: 0; } }

.ia-hub { background: var(--canvas-tint); display: flex; flex-direction: column; padding: 14px; align-self: center; transition: border-color .3s ease, box-shadow .3s ease; }
.ia-cena.hub-ativo .ia-hub { border-color: rgba(99,102,241,.55); box-shadow: 0 0 0 4px rgba(99,102,241,.10); }
.ia-hub-topo { display: flex; align-items: center; gap: 8px; font-size: .84rem; color: var(--ink-1); padding-bottom: 12px; margin-bottom: 10px; border-bottom: 1px solid var(--line); }
.ia-hub-topo span { margin-left: auto; color: var(--ink-4); font-size: .74rem; font-weight: 500; }
.ia-hub-areas { list-style: none; display: grid; gap: 3px; }
.ia-hub-areas li { display: flex; align-items: center; gap: 8px; padding: 5px 8px; border-radius: 8px; font-size: .76rem; font-weight: 600; color: var(--ink-3); transition: background .3s ease, color .3s ease; }
.ia-hub-areas li i { width: 14px; text-align: center; font-size: .72rem; color: var(--ink-4); transition: color .3s ease; }
.ia-hub-areas li.is-on { background: rgba(99,102,241,.14); color: var(--ink-1); }
.ia-hub-areas li.is-on i { color: var(--ia-hub); }
.ia-hub-log { display: flex; align-items: center; gap: 8px; margin-top: 12px; padding-top: 11px; border-top: 1px solid var(--line); font-size: .72rem; color: var(--ink-3); min-height: 3.3em; line-height: 1.35; }
.ia-hub-log i { flex: none; width: 7px; height: 7px; border-radius: 50%; background: var(--brand-green); }
.ia-cena.hub-ativo .ia-hub-log i { background: var(--brand-indigo); animation: iaPulso .7s ease-in-out infinite alternate; }
@keyframes iaPulso { to { transform: scale(1.7); opacity: .5; } }

.ia-escolha { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 16px; margin-top: 30px; font-size: .86rem; color: var(--ink-3); }
.ia-escolha-bts { display: flex; flex-wrap: wrap; gap: 8px; }
.ia-chip { font: inherit; font-weight: 700; padding: 7px 15px; border-radius: 999px; border: 1px solid var(--line); background: var(--panel); color: var(--ink-2); cursor: pointer; transition: background .2s ease, color .2s ease, border-color .2s ease; }
.ia-chip:hover { border-color: var(--ia-hub); }
.ia-chip.is-on { background: var(--ink-1); border-color: var(--ink-1); color: var(--canvas); }
.ia-escolha-aviso { margin-left: auto; font-size: .8rem; color: var(--ink-4); }

/* ---------- seções ---------- */
.ia-sec { padding: 92px 0; }
.ia-sec-tinta { background: var(--canvas-soft); border-block: 1px solid var(--line-soft); }
.ia-sec h2, .ia-fecho h2 { font-size: clamp(1.75rem, 3.1vw, 2.45rem); font-weight: 800; line-height: 1.12; letter-spacing: -.03em; color: var(--ink-1); text-wrap: balance; max-width: 24ch; margin-bottom: 14px; }
.ia-sub { font-size: 1.08rem; line-height: 1.65; color: var(--ink-3); max-width: 62ch; margin-bottom: 44px; }
.ia-ref { margin-top: 28px; font-size: .95rem; color: var(--ink-3); }

/* áreas: lista à esquerda, o que volta à direita */
.ia-areas { display: grid; grid-template-columns: 290px minmax(0, 1fr); border: 1px solid var(--line); border-radius: var(--ia-raio); overflow: hidden; background: var(--panel); }
.ia-areas-lista { display: flex; flex-direction: column; padding: 10px; gap: 2px; background: var(--canvas-soft); border-right: 1px solid var(--line); }
.ia-area-bt { font: inherit; display: flex; align-items: center; gap: 11px; width: 100%; padding: 10px 12px; border: 0; border-radius: 10px; background: none; color: var(--ink-3); font-weight: 600; font-size: .92rem; text-align: left; cursor: pointer; transition: background .2s ease, color .2s ease; }
.ia-area-bt i { width: 18px; text-align: center; font-size: .86rem; color: var(--ink-4); }
.ia-area-bt em { margin-left: auto; font-style: normal; font-size: .7rem; font-weight: 700; color: var(--ia-tom); }
.ia-area-bt:hover { color: var(--ink-1); }
.ia-area-bt.is-on { background: var(--panel); color: var(--ink-1); box-shadow: var(--shadow-sm); }
.ia-area-bt.is-on i { color: var(--ia-hub); }
.ia-areas-paineis { padding: 34px 38px; min-width: 0; display: flex; flex-direction: column; }
.ia-areas-nota { margin-top: auto; padding-top: 18px; border-top: 1px solid var(--line-soft); font-size: .9rem; color: var(--ink-3); }
.ia-painel { padding-bottom: 28px; }
.ia-js .ia-painel:not(.is-on) { display: none; }
.ia-painel + .ia-painel { margin-top: 34px; }
.ia-js .ia-painel + .ia-painel { margin-top: 0; }
.ia-painel h3 { font-size: 1.45rem; font-weight: 800; letter-spacing: -.02em; color: var(--ink-1); margin-bottom: 10px; }
.ia-painel-volta { font-size: 1.02rem; line-height: 1.6; color: var(--ink-2); max-width: 60ch; margin-bottom: 22px; }
.ia-painel-q { list-style: none; display: grid; gap: 10px; justify-items: start; }
.ia-painel-q li { padding: 11px 16px; border-radius: 16px 16px 16px 4px; background: var(--canvas-tint-2); color: var(--ink-1); font-weight: 600; font-size: .96rem; line-height: 1.4; }
.ia-js .ia-painel.is-on .ia-painel-q li { animation: iaEntra .4s ease both; }
.ia-js .ia-painel.is-on .ia-painel-q li:nth-child(2) { animation-delay: .07s; } .ia-js .ia-painel.is-on .ia-painel-q li:nth-child(3) { animation-delay: .14s; }
@keyframes iaEntra { from { opacity: 0; transform: translateY(8px); } }
.ia-painel-altera { margin-top: 22px; font-size: .92rem; color: var(--ink-2); padding-top: 16px; border-top: 1px solid var(--line-soft); }
.ia-painel-altera b { color: var(--ia-tom); }

/* o hub por trás */
.ia-pilares { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px; }
.ia-pilar { border-top: 2px solid var(--ink-1); padding-top: 20px; }
.ia-pilar h3 { font-size: 1.22rem; font-weight: 800; letter-spacing: -.015em; color: var(--ink-1); margin-bottom: 10px; }
.ia-pilar p { line-height: 1.65; color: var(--ink-2); }
.ia-mais-tit { margin: 62px 0 6px; font-size: 1.1rem; font-weight: 800; color: var(--ink-1); }
.ia-mais { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 48px; }
.ia-mais > div { display: grid; grid-template-columns: 132px minmax(0, 1fr); gap: 14px; padding: 13px 0; border-bottom: 1px solid var(--line); }
.ia-mais dt { font-weight: 700; color: var(--ink-1); }
.ia-mais dd { color: var(--ink-3); line-height: 1.5; }

/* como conectar */
.ia-conecta { display: grid; grid-template-columns: minmax(0, 1fr) 390px; gap: 56px; align-items: start; }
.ia-vias-abas { display: inline-flex; padding: 4px; border-radius: 12px; background: var(--canvas-tint); border: 1px solid var(--line); margin-bottom: 26px; }
.ia-via-bt { font: inherit; font-weight: 700; font-size: .92rem; padding: 9px 16px; border: 0; border-radius: 9px; background: none; color: var(--ink-3); cursor: pointer; transition: background .2s ease, color .2s ease; }
.ia-via-bt.is-on { background: var(--panel); color: var(--ink-1); box-shadow: var(--shadow-sm); }
.ia-js .ia-via:not(.is-on) { display: none; }
.ia-passos { list-style: none; counter-reset: passo; display: grid; gap: 18px; }
.ia-passos li { counter-increment: passo; position: relative; padding-left: 46px; line-height: 1.6; color: var(--ink-2); max-width: 60ch; }
.ia-passos li::before { content: counter(passo); position: absolute; left: 0; top: -1px; width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; font-weight: 800; font-size: .86rem; color: var(--ia-hub); background: rgba(99,102,241,.12); }
.ia-passos b { color: var(--ink-1); }
.ia-url { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin: 22px 0 0 46px; padding: 10px 10px 10px 16px; border: 1px solid var(--line); border-radius: 12px; background: var(--canvas-soft); }
.ia-url code, .ia-via-nota code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .86rem; color: var(--ink-1); overflow-wrap: anywhere; }
.ia-url code { flex: 1 1 220px; user-select: all; }
.ia-url-bt { font: inherit; font-weight: 700; font-size: .84rem; padding: 8px 14px; border-radius: 9px; border: 1px solid var(--line); background: var(--panel); color: var(--ink-1); cursor: pointer; white-space: nowrap; }
.ia-url-bt:hover { border-color: var(--ia-hub); }
.ia-url-bt.is-ok { color: var(--brand-green-ink); border-color: var(--brand-green); }
.ia-via-nota { margin-top: 18px; font-size: .88rem; color: var(--ink-3); line-height: 1.6; max-width: 62ch; }
.ia-via-usar { margin-top: 22px; padding-top: 20px; border-top: 1px solid var(--line-soft); color: var(--ink-2); max-width: 62ch; }
.ia-via-usar b { color: var(--ink-1); }

.ia-aut-rot { font-size: .86rem; font-weight: 700; color: var(--ink-3); margin-bottom: 12px; }
.ia-aut-cx { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 24px 22px; box-shadow: var(--shadow-md); }
.ia-aut-marca { display: flex; align-items: center; gap: 9px; font-size: .8rem; font-weight: 600; color: var(--ink-3); margin-bottom: 14px; }
.ia-aut-tit { font-size: 1.14rem; font-weight: 800; color: var(--ink-1); line-height: 1.3; margin-bottom: 8px; }
.ia-aut-tx { font-size: .9rem; color: var(--ink-2); margin-bottom: 16px; }
.ia-aut-tx b { color: var(--ink-1); }
.ia-aut fieldset { border: 0; min-width: 0; }
.ia-aut legend { font-size: .76rem; font-weight: 700; color: var(--ink-3); margin-bottom: 8px; }
.ia-aut-op { display: flex; gap: 11px; align-items: flex-start; padding: 12px 13px; border: 1px solid var(--line); border-radius: 12px; margin-bottom: 8px; cursor: pointer; transition: border-color .2s ease, background .2s ease; }
.ia-aut-op:has(input:checked) { border-color: var(--brand-indigo); background: rgba(99,102,241,.07); }
.ia-aut-op input { margin-top: 3px; width: 16px; height: 16px; accent-color: var(--brand-indigo); flex: none; }
.ia-aut-op b { display: block; color: var(--ink-1); font-size: .93rem; }
.ia-aut-op small { display: block; margin-top: 2px; font-size: .8rem; color: var(--ink-3); line-height: 1.45; }
.ia-aut-bts { display: flex; gap: 10px; margin-top: 16px; }
.ia-aut-bts span { flex: 1; text-align: center; padding: 11px; border-radius: 10px; font-weight: 700; font-size: .9rem; background: var(--canvas-tint-2); color: var(--ink-2); }
.ia-aut-bts .pri { background: var(--grad-primary); color: #fff; }
.ia-aut-efeito { margin-top: 14px; font-size: .88rem; line-height: 1.55; color: var(--ink-2); min-height: 4.2em; }

/* controle */
.ia-controle { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 56px; align-items: start; }
.ia-controle h2 { margin-bottom: 26px; }
.ia-fatos { list-style: none; }
.ia-fatos li { padding: 15px 0; border-bottom: 1px solid var(--line); line-height: 1.6; color: var(--ink-2); max-width: 66ch; }
.ia-fatos li:first-child { border-top: 1px solid var(--line); }
.ia-fatos b { color: var(--ink-1); }
.ia-limite { border: 1px dashed var(--ink-4); border-radius: 16px; padding: 26px 24px; }
.ia-limite h3 { font-size: 1.08rem; font-weight: 800; color: var(--ink-1); margin-bottom: 10px; }
.ia-limite p { line-height: 1.65; color: var(--ink-2); }

/* dúvidas */
.ia-faq { border-top: 1px solid var(--line); margin-top: 30px; }
.ia-faq details { border-bottom: 1px solid var(--line); }
.ia-faq summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; gap: 20px; padding: 19px 0; font-weight: 700; font-size: 1.03rem; color: var(--ink-1); }
.ia-faq summary::-webkit-details-marker { display: none; }
.ia-faq summary::after { content: '+'; font-weight: 500; font-size: 1.4rem; line-height: 1; color: var(--ink-3); transition: transform .2s ease; }
.ia-faq details[open] summary::after { transform: rotate(45deg); }
.ia-faq details p { padding: 0 0 20px; line-height: 1.7; color: var(--ink-2); max-width: 68ch; }

/* fecho: faixa escura nos dois temas */
.ia-fecho { padding: 92px 0; color: #CBD5E1; background: radial-gradient(ellipse 70% 80% at 50% -20%, rgba(99,102,241,.34) 0%, transparent 62%), #070C18; }
.ia-fecho h2 { color: #fff; max-width: 20ch; margin-bottom: 30px; }
.ia-fecho a:not(.ia-bt) { color: #C7D2FE; }
.ia-fecho-outro { margin-top: 30px; font-size: .96rem; }
.ia-marcas { margin-top: 12px; font-size: .8rem; color: #7C8AA5; }

/* ---------- telas menores ---------- */
@media (max-width: 1080px) {
  .ia-topo { padding-top: 112px; }
  .ia-topo-grade { grid-template-columns: 1fr; gap: 38px; }
  .ia-conecta, .ia-controle { grid-template-columns: 1fr; gap: 40px; }
  .ia-aut { max-width: 440px; }
  .ia-pilares { gap: 28px; }
}
@media (max-width: 860px) {
  .ia-sec, .ia-fecho { padding: 68px 0; }
  .ia-pilares { grid-template-columns: 1fr; }
  .ia-mais { grid-template-columns: 1fr; }
  .ia-areas { grid-template-columns: 1fr; }
  .ia-areas-lista { flex-direction: row; overflow-x: auto; border-right: 0; border-bottom: 1px solid var(--line); scrollbar-width: none; }
  .ia-areas-lista::-webkit-scrollbar { display: none; }
  .ia-area-bt { width: auto; white-space: nowrap; padding: 9px 13px; }
  .ia-area-bt em { margin-left: 4px; }
  .ia-areas-paineis { padding: 26px 20px; }
  .ia-escolha-aviso { margin-left: 0; flex-basis: 100%; }
}
@media (max-width: 720px) {
  /* a cena empilha: conversa em cima, o fio desce, o hub embaixo */
  .ia-cena { grid-template-columns: 1fr; }
  .ia-fio { width: 2px; height: 34px; justify-self: center; background: repeating-linear-gradient(180deg, var(--ink-4) 0 5px, transparent 5px 10px); }
  .ia-fio i { left: -5px; top: -6px; }
  @keyframes iaVai { 0% { top: -6px; opacity: 0; } 12% { opacity: 1; } 88% { opacity: 1; } 100% { top: calc(100% - 6px); opacity: 0; } }
  @keyframes iaVolta { 0% { top: calc(100% - 6px); opacity: 0; } 12% { opacity: 1; } 88% { opacity: 1; } 100% { top: -6px; opacity: 0; } }
  .ia-hub-areas { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ia-chat-corpo { min-height: 396px; }
  .ia-url { margin-left: 0; }
}
@media (max-width: 440px) {
  .ia-in { padding: 0 16px; }
  .ia-topo h1 { font-size: 2.05rem; }
  .ia-acoes .ia-bt { width: 100%; }
  .ia-mais > div { grid-template-columns: 1fr; gap: 3px; }
  .ia-barras li { grid-template-columns: 92px minmax(0, 1fr) auto; }
  .ia-chat-lig { font-size: .74rem; }
}

@media (prefers-reduced-motion: reduce) {
  .ia *, .ia *::before, .ia *::after { animation: none !important; transition: none !important; }
}