:root{--bg:#f5fbff;--card:#fff;--ink:#102235;--muted:#6c7b89;--primary:#159bd7;--primary2:#55c7e9;--line:#dcebf3;--shadow:0 12px 40px rgba(29,102,137,.10)}
*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,sans-serif;background:linear-gradient(180deg,#ecf9ff 0,#f8fbfd 42%,#fff 100%);color:var(--ink);min-height:100vh}a{color:inherit;text-decoration:none}header{height:72px;display:flex;align-items:center;justify-content:space-between;padding:0 max(5vw,22px);background:rgba(255,255,255,.9);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5;backdrop-filter:blur(14px)}.brand{font-weight:900;font-size:21px;display:flex;gap:9px;align-items:center;color:#087bb1}.brand:first-letter{font-size:26px}nav{display:flex;gap:18px;align-items:center}nav a{font-weight:700;font-size:14px}.pill{background:#e9f8ff;padding:9px 14px;border-radius:999px}main{width:min(1160px,92vw);margin:0 auto;padding:48px 0 70px}.hero{min-height:66vh;display:grid;grid-template-columns:1.15fr .85fr;gap:60px;align-items:center}.hero h1{font-size:clamp(44px,6vw,76px);line-height:.98;margin:15px 0 24px;letter-spacing:-3px}.hero p{font-size:20px;color:var(--muted);line-height:1.6}.eyebrow{color:#0b93cf;font-weight:900;font-size:12px;letter-spacing:1.6px;text-transform:uppercase}.hero-card,.card{background:rgba(255,255,255,.96);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:22px}.hero-card{padding:34px;font-size:18px}.hero-card b{font-size:25px}.mini{padding:14px 0;border-top:1px solid var(--line);font-weight:700}.actions{display:flex;gap:12px;flex-wrap:wrap}.btn{display:inline-flex;border:0;border-radius:13px;padding:13px 19px;background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;font-weight:900;cursor:pointer;font-size:15px;justify-content:center}.btn.secondary{background:white;color:#1686b9;border:1px solid #a9dbef}.auth,.formbox{max-width:540px;margin:30px auto;padding:32px}.auth h1,.formbox h1{margin-top:0;font-size:36px}form{display:grid;gap:16px}label{display:grid;gap:7px;font-weight:800;font-size:14px}input,textarea,select{width:100%;border:1px solid #cfe2ec;border-radius:12px;background:#fbfdff;padding:13px 14px;font:inherit;color:var(--ink);outline:none}input:focus,textarea:focus,select:focus{border-color:#47b7e4;box-shadow:0 0 0 3px rgba(71,183,228,.12)}.flash{background:#e8f8ff;border:1px solid #b9e6f8;padding:13px 16px;border-radius:12px;margin-bottom:20px}.topline{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:32px}.topline h1{font-size:45px;margin:6px 0}.topline p{color:var(--muted);margin:0}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:38px}.community{padding:18px;display:flex;gap:14px;align-items:center;transition:.18s}.community:hover{transform:translateY(-2px);box-shadow:0 16px 45px rgba(29,102,137,.16)}.community h3{margin:0 0 4px}.community p{margin:0;color:var(--muted);font-size:13px}.avatar{width:50px;height:50px;display:grid;place-items:center;border-radius:16px;background:linear-gradient(135deg,#1aa4df,#73d5eb);color:white;font-weight:900;font-size:21px;flex:none}.avatar.big{width:88px;height:88px;font-size:34px;border-radius:26px}.community-head{padding:28px;display:flex;gap:22px;align-items:center;margin-bottom:24px}.community-head h1{font-size:38px;margin:5px 0}.community-head p{color:var(--muted);margin:6px 0 10px}.layout{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:22px}.composer,.post,aside,.join{padding:20px;margin-bottom:16px}.composer{display:grid;gap:12px}.postmeta{display:flex;justify-content:space-between;gap:10px;margin-bottom:13px}.postmeta span{font-size:12px;color:var(--muted)}.postbody{white-space:pre-wrap;line-height:1.55}.person{display:flex;align-items:center;gap:10px;padding:11px 0;border-bottom:1px solid #edf3f6}.person:last-child{border-bottom:0}.person span{flex:1;font-weight:800}.person small{color:var(--muted)}.person a{color:#0b8fc8;font-weight:900;font-size:13px}.empty{padding:25px;color:var(--muted);text-align:center}.chat{max-width:850px;margin:auto;overflow:hidden}.chathead{padding:18px 22px;border-bottom:1px solid var(--line);display:flex;gap:15px;align-items:center}.chathead b,.chathead small{display:block}.chathead small{color:var(--muted);margin-top:3px}.thread{padding:22px;min-height:420px;max-height:62vh;overflow:auto;background:#f7fbfd}.bubble{width:fit-content;max-width:75%;background:white;border:1px solid var(--line);border-radius:16px 16px 16px 4px;padding:10px 13px;margin:9px 0}.bubble.mine{margin-left:auto;background:#dff5ff;border-color:#b7e5f7;border-radius:16px 16px 4px 16px}.bubble b,.bubble small{font-size:11px}.bubble small{display:block;color:var(--muted);margin-top:5px}.send{grid-template-columns:1fr auto;padding:16px;border-top:1px solid var(--line)}footer{text-align:center;color:#7c8b97;padding:35px;font-size:13px;border-top:1px solid #edf3f6}
@media(max-width:850px){header{height:62px;padding:0 16px}.brand span{display:none}nav{gap:10px}main{padding-top:26px}.hero{grid-template-columns:1fr;gap:25px}.hero h1{font-size:48px;letter-spacing:-2px}.hero-card{padding:24px}.grid{grid-template-columns:1fr}.topline{align-items:start;flex-direction:column}.topline h1{font-size:36px}.layout{grid-template-columns:1fr}.community-head{align-items:flex-start}.community-head h1{font-size:31px}.avatar.big{width:64px;height:64px;border-radius:20px}.send{grid-template-columns:1fr}.bubble{max-width:88%}}