:root{color-scheme:light;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:#f7fbfa;color:#123331;--bg: #f7fbfa;--surface: #ffffff;--surface-soft: #eefaf8;--border: #d9eeee;--border-strong: #9bd7d1;--text: #123331;--muted: #5f7774;--primary: #0d9488;--primary-strong: #14b8a6;--accent: #f97316;--accent-soft: #fff7ed;--mint: #059669;--danger: #dc2626;--shadow-soft: 0 16px 40px rgba(15, 54, 51, .08)}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;min-width:320px;min-height:100dvh;background:linear-gradient(180deg,#eefaf8c7,#f7fbfa00 360px),var(--bg)}button,input,textarea{font:inherit}button{cursor:pointer}button:disabled,textarea:disabled{cursor:not-allowed;opacity:.55}a{color:inherit}.app-shell{display:grid;grid-template-rows:auto auto minmax(0,1fr) auto auto;gap:16px;width:min(1440px,100%);min-height:100dvh;margin:0 auto;padding:24px;overflow:visible}.topbar,.network-strip,.device-panel,.chat-panel,.transfer-panel,.seo-status-card,.seo-faq,.site-footer{border:1px solid var(--border);background:var(--surface);box-shadow:var(--shadow-soft)}.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:84px;padding:16px 18px;border-radius:8px}.brand-lockup,.topbar-actions,.status-pill,.language-field,.name-field,.network-strip,.panel-heading,.chat-header,.header-meta,.composer-actions,.transfer-meta,.trust-row,.footer-brand,.footer-links{display:flex;align-items:center}.brand-lockup{gap:12px;min-width:0}.brand-copy{display:grid;min-width:0;gap:6px}.brand-mark{display:grid;width:46px;height:46px;flex:0 0 auto;place-items:center;border-radius:8px;overflow:hidden;background:var(--primary)}.brand-mark img{width:100%;height:100%;display:block}h1,h2,h3{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;letter-spacing:0}h1{font-size:1.75rem;line-height:1}h2{font-size:1.1rem;line-height:1.25}h3{font-size:1rem;line-height:1.25}.hero-summary{max-width:760px;margin:0;color:var(--muted);font-size:.92rem;line-height:1.55}.eyebrow{margin:0 0 4px;color:var(--accent);font-size:.72rem;font-weight:700;letter-spacing:0;text-transform:uppercase}.topbar-actions{gap:10px;flex-wrap:wrap;justify-content:flex-end}.status-pill,.language-field,.name-field{min-height:44px;border:1px solid var(--border);border-radius:8px;background:var(--surface-soft)}.language-field{position:relative;padding:0;color:var(--muted);font-size:.88rem;font-weight:700}.lang-dropdown-btn{display:flex;align-items:center;gap:8px;height:44px;padding:0 10px;border:0;border-radius:8px;background:transparent;color:var(--muted);font:inherit;font-size:.88rem;font-weight:700;cursor:pointer;white-space:nowrap}.lang-dropdown-btn:hover{color:var(--text)}.lang-dropdown-btn:focus-visible{outline:3px solid #ccfbf1;outline-offset:2px}.lang-chevron{transition:transform .2s ease}.lang-chevron.open{transform:rotate(180deg)}.lang-dropdown-menu{position:absolute;top:calc(100% + 6px);right:0;z-index:100;display:grid;min-width:140px;gap:2px;padding:6px;border:1px solid var(--border);border-radius:8px;background:var(--surface);box-shadow:var(--shadow-soft)}.lang-dropdown-item{display:block;padding:8px 10px;border-radius:6px;color:var(--text);text-decoration:none;font-size:.86rem;font-weight:600;white-space:nowrap;transition:background .15s}.lang-dropdown-item:hover{background:var(--surface-soft)}.lang-dropdown-item.active{background:#0d9488;color:#fff}.status-pill{gap:8px;padding:0 12px;color:var(--primary);font-weight:700}.status-dot{width:9px;height:9px;border-radius:999px;background:var(--mint)}.name-field{gap:8px;width:min(270px,100%);padding:0 10px;color:var(--muted)}.name-field input{width:100%;min-width:0;border:0;outline:0;color:var(--text);background:transparent}.network-strip{grid-row:2;justify-content:space-between;gap:14px;padding:14px 18px;border-radius:8px}.network-strip div{display:grid;min-width:0;gap:2px}.network-strip span{color:var(--muted);font-size:.82rem}.network-strip strong{overflow:hidden;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:1.02rem;text-overflow:ellipsis;white-space:nowrap}.workspace{grid-row:3;display:grid;grid-template-columns:minmax(230px,300px) minmax(0,1fr) minmax(250px,330px);gap:14px;min-height:min(680px,calc(100dvh - 210px))}.device-panel,.transfer-panel{display:flex;min-height:0;flex-direction:column;border-radius:8px}.chat-panel{display:grid;min-height:0;grid-template-rows:auto minmax(0,1fr) auto;border-radius:8px}.panel-heading,.chat-header{justify-content:space-between;gap:12px;padding:16px;border-bottom:1px solid var(--border)}.count-badge,.header-meta{flex:0 0 auto;border-radius:999px;color:var(--primary);background:#e7f8f5}.count-badge{display:grid;min-width:32px;height:32px;place-items:center;font-weight:700}.header-meta{gap:8px;padding:8px 10px;color:var(--muted);font-size:.86rem}.device-list,.transfer-list,.message-stream{min-height:0;overflow:auto}.device-list,.transfer-list{display:grid;align-content:start;gap:10px;padding:14px}.device-card{display:grid;grid-template-columns:40px minmax(0,1fr) 18px;gap:10px;width:100%;min-height:64px;align-items:center;border:1px solid var(--border);border-radius:8px;padding:10px;color:var(--text);text-align:left;background:#fff;transition:border-color .16s ease,background .16s ease}.device-card:hover,.device-card.is-selected{border-color:var(--primary);background:#f0fdfa}.device-card.is-self{cursor:default}.device-card.is-self:hover{border-color:var(--border);color:var(--text);background:#fff}.device-icon{display:grid;width:40px;height:40px;place-items:center;border-radius:8px;color:var(--primary);background:#e7f8f5}.device-copy{display:grid;min-width:0;gap:2px}.device-copy strong,.transfer-title strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.device-copy strong{display:flex;align-items:center;gap:8px}.device-copy small,.transfer-title small,.transfer-meta{color:var(--muted);font-size:.82rem}.unread-badge{width:fit-content;margin-top:4px;border-radius:999px;padding:3px 8px;color:#fff;background:var(--accent);font-size:.72rem;font-weight:700}.self-badge{display:inline-flex;align-items:center;border-radius:999px;padding:2px 8px;color:var(--primary);background:#e7f8f5;font-size:.72rem;font-weight:700;white-space:nowrap}.device-check{color:var(--mint);opacity:0}.device-card.is-selected .device-check{opacity:1}.trust-row{gap:8px;margin:auto 14px 14px;padding:11px;border:1px solid #b7f0d8;border-radius:8px;color:#065f46;background:#ecfdf5;font-size:.82rem}.message-stream{display:flex;flex:1;flex-direction:column;gap:10px;padding:16px}.message-bubble{width:fit-content;max-width:min(76%,680px);border:1px solid var(--border);border-radius:8px;padding:10px 12px;background:var(--surface-soft)}.message-bubble.out{align-self:flex-end;border-color:var(--primary);color:#fff;background:var(--primary)}.message-bubble.system{align-self:center;color:var(--muted);background:#fff}.message-bubble p{margin:0;overflow-wrap:anywhere;white-space:pre-wrap}.message-image-link{display:block;overflow:hidden;width:min(320px,64vw);max-width:100%;max-height:280px;margin-bottom:8px;border-radius:8px;background:#12333114}.message-image-link img{display:block;width:100%;max-height:280px;object-fit:contain}.message-bubble.out .message-image-link{background:#ffffff29}.message-meta{display:flex;align-items:center;justify-content:flex-end;gap:6px;margin-top:6px;color:currentColor;opacity:.72}.message-bubble time{font-size:.72rem}.message-copy-button{display:inline-flex;width:26px;height:26px;align-items:center;justify-content:center;border:0;border-radius:6px;color:currentColor;background:transparent}.message-copy-button:hover{background:#12333114}.message-bubble.out .message-copy-button:hover{background:#ffffff2e}.composer{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px;padding:14px;border-top:1px solid var(--border)}.composer textarea{width:100%;min-height:50px;max-height:150px;resize:vertical;border:1px solid var(--border);border-radius:8px;padding:12px;outline:0;color:var(--text);background:#fff}.composer textarea:focus{border-color:var(--primary-strong);outline:3px solid #ccfbf1}.device-card:focus-visible,.icon-button:focus-visible,.message-copy-button:focus-visible,.send-button:focus-visible,.name-field input:focus-visible,.transfer-meta a:focus-visible{outline:3px solid #ccfbf1;outline-offset:2px}.composer-actions{gap:8px}.icon-button,.send-button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;border:1px solid var(--border);border-radius:8px;color:var(--text);background:#fff;transition:border-color .16s ease,background .16s ease,color .16s ease}.icon-button{width:44px;flex:0 0 auto}.icon-button:hover,.send-button:hover{border-color:var(--primary);color:var(--primary);background:#f0fdfa}.send-button{gap:8px;padding:0 16px;border-color:var(--primary);color:#fff;background:var(--primary);font-weight:700}.send-button:hover{color:#fff;background:#0f766e}.drop-zone{display:flex;min-height:86px;align-items:center;justify-content:center;gap:10px;margin:14px 14px 0;border:1px dashed var(--border-strong);border-radius:8px;color:var(--muted);background:#fff;text-align:center}.drop-zone.is-active{border-color:var(--accent);color:#92400e;background:var(--accent-soft)}.transfer-card{display:grid;gap:10px;border:1px solid var(--border);border-radius:8px;padding:12px;background:#fff}.transfer-title{display:grid;min-width:0;gap:2px}.progress-bar{height:7px;overflow:hidden;border-radius:999px;background:var(--surface-soft)}.progress-bar span{display:block;height:100%;border-radius:inherit;background:var(--accent)}.transfer-meta{justify-content:space-between;gap:8px}.transfer-meta a{display:grid;width:30px;height:30px;flex:0 0 auto;place-items:center;border-radius:8px;color:#fff;background:var(--mint)}.transfer-error{margin:0;color:var(--danger);font-size:.82rem}.empty-state{display:grid;min-height:160px;place-items:center;align-content:center;gap:10px;color:var(--muted);text-align:center}.empty-state.compact{min-height:120px}.empty-state p{margin:0}.empty-state h3{margin-top:2px;color:var(--text)}.seo-shell{height:auto;min-height:100dvh;overflow:auto}.seo-status-card{display:grid;gap:8px;padding:16px 18px;border-radius:8px}.seo-status-card p{margin:0;color:var(--muted);line-height:1.55}.seo-faq{grid-row:4;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;padding:14px;border-radius:8px}.seo-faq article{display:grid;gap:6px;min-width:0;padding:12px;border:1px solid var(--border);border-radius:8px;background:#fbfffe}.seo-faq p{margin:0;color:var(--muted);font-size:.86rem;line-height:1.55}.site-footer{display:grid;grid-row:5;grid-template-columns:minmax(0,1fr) auto auto;align-items:center;gap:18px;padding:16px 18px;border-radius:8px}.footer-brand{gap:10px;min-width:0}.footer-brand strong{display:block;margin-bottom:2px}.footer-brand p,.footer-meta{margin:0;color:var(--muted);font-size:.84rem;line-height:1.45}.footer-mark{width:38px;height:38px}.footer-links{gap:12px;flex-wrap:wrap}.footer-links a{color:var(--muted);font-size:.86rem;font-weight:600;text-decoration:none}.footer-links a:hover{color:var(--primary)}.footer-meta{text-align:right}@media(max-width:1100px){.workspace{grid-template-columns:280px minmax(0,1fr)}.transfer-panel{grid-column:1 / -1;min-height:280px}.transfer-list{grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}.seo-faq,.site-footer{grid-template-columns:1fr}.footer-meta{text-align:left}}@media(max-width:760px){.app-shell{padding:12px}.topbar,.network-strip,.workspace,.composer{grid-template-columns:1fr}.topbar,.network-strip{align-items:stretch}.topbar{flex-direction:column}.topbar-actions{width:100%;justify-content:stretch}.status-pill,.language-field,.name-field{flex:1 1 170px}.workspace{display:grid;height:auto;min-height:0}.device-panel,.transfer-panel{min-height:260px}.chat-panel{height:520px}.composer-actions{justify-content:space-between}.send-button{flex:1}.message-bubble{max-width:92%}}