.hub-page { min-height: 100vh; background: #f2eee8; }
.hub-main { display: grid; grid-template-columns: .78fr 1.22fr; min-height: calc(100vh - 130px); }
.hub-intro { padding: 9vw 6vw; background: var(--ink); color: var(--paper); }
.hub-intro h1 { margin: 20px 0 30px; font-size: clamp(46px, 6vw, 82px); }
.hub-intro h1 em { color: var(--coral); }
.hub-intro > p:last-child { max-width: 420px; color: #c5c4ba; font-size: 14px; }
.hub-workspace { align-self: center; width: min(720px, 90%); margin: 60px auto; }
.hub-tabs { display: grid; grid-template-columns: repeat(3, 1fr); border-bottom: 1px solid var(--line); }
.hub-tab { min-height: 66px; padding: 12px; border: 0; color: var(--muted); background: transparent; font: 600 12px var(--sans); text-align: left; }
.hub-tab span { display: block; margin-bottom: 5px; color: var(--coral); font: 10px var(--mono); }
.hub-tab.active { color: var(--paper); background: var(--ink); }
.hub-panel { padding: 26px; background: #fff; }
.expert-card { display: flex; align-items: center; gap: 14px; margin-bottom: 20px; }
.expert-card div { display: grid; }
.expert-card strong { font: 400 24px var(--serif); }
.expert-card small { color: var(--muted); font-size: 11px; }
.expert-monogram { display: grid; width: 42px; height: 42px; place-items: center; color: #fff; border-radius: 50%; font: 500 13px var(--mono); }
.expert-monogram.marie { background: var(--coral); }
.expert-monogram.lea { background: #49755d; }
.expert-monogram.chloe { background: #a55f73; }
.chat-box { display: flex; height: 340px; padding: 18px; overflow-y: auto; flex-direction: column; gap: 12px; border: 1px solid var(--line); background: #f8f6f2; }
.chat-message { max-width: 84%; padding: 12px 14px; align-self: flex-start; border-left: 3px solid var(--coral); background: #fff; font-size: 13px; }
.chat-message strong { color: var(--coral); font: 500 10px var(--mono); text-transform: uppercase; }
.chat-message p { margin: 5px 0 0; }
.chat-message.user { align-self: flex-end; border-left: 0; border-right: 3px solid var(--ink); background: var(--cream); }
.chat-message.jacques { border-color: var(--ink); }
.chat-message.jacques strong { color: var(--ink); }
.chat-message.lea { border-color: #49755d; }
.chat-message.lea strong { color: #49755d; }
.chat-message.chloe { border-color: #a55f73; }
.chat-message.chloe strong { color: #a55f73; }
.chat-actions { display: grid; gap: 10px; margin-top: 14px; }
.chat-actions input, .chat-actions textarea { width: 100%; padding: 12px; resize: vertical; border: 1px solid var(--line); border-radius: 0; outline-color: var(--coral); background: #fff; }
.option-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.option-grid button, .hub-command { min-height: 44px; padding: 10px 12px; border: 1px solid var(--line); color: var(--ink); background: #fff; font-size: 12px; text-align: left; }
.option-grid button:hover, .option-grid button:focus-visible { border-color: var(--coral); color: var(--coral); }
.hub-command { display: flex; justify-content: space-between; border: 0; color: var(--paper); background: var(--ink); font-weight: 700; }
.hub-note { display: block; margin-top: 8px; color: var(--muted); font-size: 10px; }
.hub-footer { display: flex; justify-content: space-between; gap: 20px; padding: 20px 5vw; color: var(--muted); background: #ded5ca; font-size: 11px; }
.hub-footer p { margin: 0; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
@media (max-width: 900px) { .hub-main { grid-template-columns: 1fr; }.hub-intro { padding: 70px 24px; }.hub-workspace { width: calc(100% - 32px); margin: 32px auto; } }
@media (max-width: 560px) { .hub-tab { min-height: 60px; padding: 8px; font-size: 10px; }.hub-panel { padding: 16px; }.chat-box { height: 320px; }.option-grid { grid-template-columns: 1fr; }.hub-footer { display: block; }.hub-footer a { display: inline-block; margin-top: 8px; } }