:root{--blue:#4c9aff;--blue-deep:#3b82f6;--blue-soft:#eaf3ff;--blue-muted:#c5dbf7;--rail:#eef3f9;--surface:#fff;--chat-bg:#f3f6fb;--list-bg:#f7f9fc;--text:#1a1d26;--muted:#9aa3b2;--online:#22c55e;--shadow:0 4px 18px #4c9aff14;--shadow-card:0 2px 10px #0f172a0d;--radius-lg:22px;--radius-md:16px;--radius-sm:12px;--font:"Inter", -apple-system, BlinkMacSystemFont, "PingFang SC", "Segoe UI", sans-serif}*,:before,:after{box-sizing:border-box}html,body,#root{height:100dvh;margin:0;overflow:hidden}#root{width:100%;max-width:100%;text-align:initial}body{font-family:var(--font);color:var(--text);-webkit-font-smoothing:antialiased;background:linear-gradient(165deg,#d4e4f7 0%,#e8eef6 42%,#f0f4f9 100%)}button,input,textarea{font:inherit}button{cursor:pointer;background:0 0;border:none;padding:0}img{display:block}.app-shell{justify-content:center;align-items:center;height:100%;padding:24px;display:flex}.app-frame{background:var(--surface);border-radius:28px;grid-template-rows:1fr;grid-template-columns:72px 300px 1fr;width:min(1280px,100%);height:min(820px,100%);min-height:0;display:grid;overflow:hidden;box-shadow:0 24px 64px #375a8c2e}.rail{background:var(--rail);flex-direction:column;align-items:center;gap:8px;padding:18px 0 16px;display:flex}.rail-logo{color:#fff;background:linear-gradient(145deg,#6eb6ff,#4c9aff 55%,#3b82f6);border-radius:12px;place-items:center;width:40px;height:40px;margin-bottom:12px;font-size:18px;font-weight:700;display:grid;box-shadow:0 6px 14px #4c9aff59}.rail-nav{flex-direction:column;flex:1;align-items:center;gap:6px;display:flex}.rail-btn{color:#8b97a8;border-radius:12px;place-items:center;width:42px;height:42px;transition:background .15s,color 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8px;font-size:12px}.msg-row{flex-direction:column;max-width:min(420px,72%);display:flex}.msg-row.mine{align-self:flex-end;align-items:flex-end}.msg-row.theirs{align-self:flex-start;align-items:flex-start}.bubble{word-break:break-word;border-radius:20px;padding:12px 16px;font-size:14px;line-height:1.45;position:relative}.msg-row.theirs .bubble{background:var(--surface);color:var(--text);box-shadow:var(--shadow-card);border-bottom-left-radius:8px}.msg-row.mine .bubble{background:var(--blue);color:#fff;border-bottom-right-radius:8px;box-shadow:0 8px 18px #4c9aff47}.msg-meta{color:var(--muted);align-items:center;gap:4px;margin-top:4px;font-size:11px;display:flex}.msg-row.mine .msg-meta{justify-content:flex-end}.ticks{color:var(--blue);letter-spacing:-1px;font-size:12px}.composer{background:var(--chat-bg);border-top:1px solid #0f172a0a;flex-shrink:0;align-items:center;gap:10px;padding:12px 20px 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16px;overflow:auto}.contact-row{border-radius:var(--radius-md);width:100%;color:inherit;flex-direction:column;margin-bottom:4px;display:flex}.contact-row-main{text-align:left;border-radius:var(--radius-md);width:100%;color:inherit;cursor:pointer;font:inherit;background:0 0;border:0;grid-template-columns:48px 1fr auto;align-items:center;gap:10px;padding:12px;display:grid}.contact-row.apply-row{grid-template-columns:48px 1fr auto;align-items:center;gap:10px;padding:12px;display:grid}.contact-row:hover:not(.disbanded){background:#4c9aff0f}.contact-row.disbanded{opacity:.78;background:#8c94a014}.contact-row.disbanded .avatar{filter:grayscale();opacity:.75}.contact-row.disbanded .name,.contact-row.disbanded .preview{color:#9aa3b2}.contact-row .avatar{object-fit:cover;background:#dbe7f5;border-radius:50%;width:48px;height:48px}.contact-row .meta{min-width:0}.contact-row .name{font-size:14px;font-weight:600}.contact-row 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