:root{color-scheme:dark;--ink:#eff8f5;--muted:#91aaa5;--line:#284740;--blue:#91ddc6;--green:#36d399;--panel:#102320;--bg:#071514}
*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at 10% 0,#123c37 0,transparent 35%),var(--bg);color:var(--ink);font:14px/1.45 ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
.login-shell{width:min(1180px,94vw);min-height:100vh;margin:auto;display:grid;grid-template-columns:minmax(320px,.8fr) minmax(420px,1.2fr);align-items:center;gap:60px;padding:40px 0}.login-card{max-width:430px;padding:12px}.eyebrow{margin:0 0 20px;color:var(--blue);font-size:11px;font-weight:800;letter-spacing:.17em}.login-card h1{margin:0;font-size:clamp(42px,6vw,72px);line-height:.95;letter-spacing:-.055em}.intro{margin:26px 0 30px;color:var(--muted);font-size:16px;max-width:390px}form{display:grid;gap:10px}label{font-size:12px;font-weight:800}input{width:100%;border:1px solid var(--line);border-radius:10px;background:#0b1b1a;color:var(--ink);padding:14px 15px;font:inherit;outline:none}input:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(145,221,198,.16)}button{margin-top:10px;border:1px solid #397565;border-radius:10px;background:#17493f;color:#fff;padding:14px 18px;font-weight:800;cursor:pointer}button:hover{filter:brightness(1.17)}button:disabled{opacity:.55;cursor:wait}.error{margin:2px 0 0;color:#ffabb4}.secure{display:flex;justify-content:center;align-items:center;gap:7px;margin:22px 0 0;color:var(--muted);font-size:12px}.secure span,.signal-label span{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 0 5px rgba(54,211,153,.12)}
.signal{position:relative;min-height:650px;overflow:hidden;border:1px solid var(--line);border-radius:24px;background:radial-gradient(circle at 50% 52%,rgba(54,211,153,.2),transparent 27%),linear-gradient(145deg,#12332f,#091b19)}.orbit{position:absolute;left:50%;top:52%;border:1px solid rgba(145,221,198,.18);border-radius:50%;transform:translate(-50%,-50%)}.orbit-one{width:220px;height:220px}.orbit-two{width:430px;height:430px}.orbit-three{width:640px;height:640px}.core{position:absolute;left:50%;top:52%;width:78px;height:78px;border-radius:50%;transform:translate(-50%,-50%);background:#91ddc6;box-shadow:0 0 0 18px rgba(145,221,198,.11),0 0 70px rgba(79,191,159,.38)}.signal-label{position:absolute;right:32px;bottom:32px;display:flex;align-items:center;gap:9px;padding:12px 15px;border:1px solid var(--line);border-radius:12px;background:rgba(7,21,20,.7);color:#c9ddd8;font-weight:700}
@media(max-width:820px){.login-shell{grid-template-columns:1fr;gap:24px;padding:38px 0}.login-card{max-width:none}.signal{min-height:270px}.orbit-three{width:500px;height:500px}.orbit-two{width:320px;height:320px}.orbit-one{width:160px;height:160px}}