/* TopBusiness Chat sign-up (owner 2026-10-06): the approved proposal look - TopBusiness navy, phone first, works on a PC too. */
:root{--navy:#16407d;--blue:#1f6fe5;--ink:#1b1f26;--muted:#5b6b82;--line:#d9e1ec;--soft:#eef4ff;--bg:#fff;--err:#c62828}
@media (prefers-color-scheme:dark){:root{--ink:#e8edf5;--muted:#a3b0c2;--line:#33405a;--soft:#1d2a40;--bg:#0f1622;--navy:#4d84d6;--blue:#6aa2ff}}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;background:var(--bg);color:var(--ink);font:400 16px/1.45 "Segoe UI",Roboto,Arial,sans-serif}
#app{max-width:440px;margin:0 auto;min-height:100vh;min-height:100dvh}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
.s{display:none;min-height:100vh;min-height:100dvh;flex-direction:column;padding:max(14px,env(safe-area-inset-top)) 22px max(22px,env(safe-area-inset-bottom));position:relative}
.s.on{display:flex}
.top{display:flex;align-items:center;justify-content:space-between;min-height:44px;gap:12px}
.dots{font-size:24px;line-height:1;padding:6px 10px}.back{font-size:24px;padding:6px 8px}.bar{flex:1;font-size:20px;font-weight:600;margin:0}
.hero{display:flex;justify-content:center;margin:46px 0 26px}
.ttl{font-size:26px;font-weight:600;text-align:center;margin:6px 0}.ttl2{font-size:24px;font-weight:400;text-align:center;margin:14px 0 6px}
.brand{display:flex;align-items:center;gap:8px;justify-content:center;color:var(--navy);font-weight:700;font-size:15px}
.brand b{background:var(--navy);color:#fff;border-radius:6px;padding:1px 6px;font-size:13px}
.sub{color:var(--muted);text-align:center;font-size:15px;margin:10px 0 0}.sub.left{text-align:start}
.link{color:var(--blue);font-weight:600;padding:0}
.grow{flex:1;min-height:20px}
.btn{display:block;width:100%;border-radius:24px;height:48px;background:var(--navy);color:#fff;font-weight:600;font-size:17px;margin-top:12px}
.btn:disabled{background:#e6eaf0;color:#9aa6b6;cursor:default}.btn.ghost{background:transparent;color:var(--navy);border:1.5px solid var(--line)}
.lang{margin:22px auto 0;display:flex;align-items:center;gap:10px;background:var(--soft);border-radius:22px;padding:9px 18px}
.list{display:flex;flex-direction:column}.list .row{display:flex;align-items:center;gap:18px;padding:13px 4px;border-bottom:1px solid var(--line);text-align:start}
.list .r{flex:0 0 22px;height:22px;border-radius:50%;border:2px solid #6b7686}.list .row.on .r{border-color:var(--navy);box-shadow:inset 0 0 0 4px var(--bg);background:var(--navy)}
.list .n{display:block;font-size:17px}.list .e{display:block;font-size:13px;color:var(--muted)}
.country{display:block;width:88%;margin:22px auto 0}.country select{width:100%;font:inherit;font-size:17px;padding:8px 4px;border:0;border-bottom:2px solid var(--blue);background:transparent;color:var(--ink);text-align:center;text-align-last:center}
.field{display:flex;gap:14px;margin:22px auto 0;width:88%}.cc{flex:0 0 26%;border-bottom:2px solid var(--blue);padding:8px 4px;font-size:18px;font-weight:600;text-align:center;direction:ltr}
.field input{flex:1;min-width:0;font:inherit;font-size:18px;border:0;border-bottom:2px solid var(--blue);padding:8px 4px;background:transparent;color:var(--ink);outline:none;direction:ltr}
.otp{display:block;margin:26px auto 6px;width:230px;text-align:center;font:600 30px/1.3 "Segoe UI",Arial;letter-spacing:10px;border:0;border-bottom:2px solid var(--blue);background:transparent;color:var(--ink);outline:none;direction:ltr}
.otp.wide{width:260px;letter-spacing:4px;font-size:26px}
.note{font-size:13px;color:var(--muted);text-align:center;margin:6px 0 0}.err{color:var(--err);font-size:14px;text-align:center;min-height:20px;margin:8px 0 0}
.chip{margin:14px auto 0;background:#fff6d6;color:#5a4300;border:1px solid #f0d48a;border-radius:8px;padding:6px 12px;font-size:13px;text-align:center}
.photo{width:110px;height:110px;border-radius:50%;background:var(--soft);margin:24px auto 6px;display:flex;align-items:center;justify-content:center}
.input{display:block;width:100%;font:inherit;font-size:17px;border:0;border-bottom:2px solid var(--blue);padding:9px 2px;margin:16px 0 0;background:transparent;color:var(--ink);outline:none}
.menu{position:absolute;inset-inline-end:12px;top:54px;background:var(--bg);border-radius:14px;box-shadow:0 6px 20px #0003;padding:6px 0;min-width:72%;z-index:3;display:flex;flex-direction:column}
.menu[hidden]{display:none}.menu button{padding:14px 18px;font-size:17px;text-align:start}
.hello{display:flex;align-items:center;gap:14px;margin:18px 0 6px}.avatar{width:52px;height:52px;border-radius:50%;background:var(--navy);color:#fff;display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:600}
.hname{font-size:18px;font-weight:600}.hphone{color:var(--muted);direction:ltr;text-align:start}
.bigcode{margin:30px auto 10px;font:700 40px/1.2 "Consolas","Segoe UI",monospace;letter-spacing:6px;color:var(--navy);direction:ltr}
.dev{display:flex;justify-content:space-between;align-items:center;padding:12px 2px;border-bottom:1px solid var(--line)}.dev small{display:block;color:var(--muted)}
[dir=rtl] .ttl,[dir=rtl] .ttl2{font-family:"Segoe UI",Tahoma,Arial,sans-serif}
.qr{width:220px;height:220px;margin:20px auto 4px;background:#fff;border-radius:12px;padding:6px;box-shadow:0 1px 6px #0002}.qr svg{width:100%;height:100%;display:block}
.chip.float{position:fixed;left:50%;top:14px;transform:translateX(-50%);z-index:2147483000;width:max-content;max-width:92vw;margin:0;box-shadow:0 4px 16px rgba(0,0,0,.18);font-size:14px;padding:10px 14px}
/* Sign in first (owner 10-06 "login page and small registration request below") */
.hero.sm{margin:10px 0 8px}.lang.sm{margin:0;padding:6px 12px;font-size:14px;gap:6px}
[data-s=welcome] .ttl2{font-weight:600;font-size:20px;margin:22px 0 0}[data-s=welcome] .btn{margin-top:18px}
.reg{text-align:center;font-size:14px;color:var(--muted);margin:16px 0 0;padding-top:12px;border-top:1px solid var(--line)}
.btn[hidden]{display:none}.btn.bio{display:flex;align-items:center;justify-content:center;gap:10px}.btn.bio[hidden]{display:none}
.fp{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round}.fp.big{width:110px;height:110px;color:var(--navy);stroke-width:1.2}
.bio-row{margin-top:8px}.bio-row[hidden]{display:none}
.devcard{margin:18px 0 6px;border:1px solid var(--line);border-radius:12px;padding:6px 14px;background:var(--soft)}.devline{padding:8px 0}.devline+.devline{border-top:1px solid var(--line)}.devline b{display:block;font-size:17px}.devline small{color:var(--muted)}
.sect{font-size:14px;color:var(--muted);font-weight:600;margin:22px 0 4px;text-transform:uppercase;letter-spacing:.4px}.dev.hist{padding:9px 2px}