:root{--navy:#071a33;--navy2:#0a2c5a;--blue:#0097e3;--orange:#f58220;--ink:#0f172a;--mute:#5b6784;--line:#e3e8f2;--bg:#f4f7fb}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased}
.shell{min-height:100vh;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr)}

/* ---------- left: brand panel ---------- */
.hero{position:relative;display:flex;flex-direction:column;padding:48px 56px;color:#fff;overflow:hidden;
 background:radial-gradient(900px 520px at -10% -10%,rgba(0,151,227,.55),transparent 60%),linear-gradient(160deg,var(--navy) 0%,var(--navy2) 100%)}
.hero::before{content:"";position:absolute;inset:0;opacity:.07;pointer-events:none;
 background-image:linear-gradient(#fff 1px,transparent 1px),linear-gradient(90deg,#fff 1px,transparent 1px);background-size:44px 44px;
 -webkit-mask-image:linear-gradient(180deg,#000,transparent 80%);mask-image:linear-gradient(180deg,#000,transparent 80%)}
.hero>*{position:relative}
.logo{display:block;height:52px;width:auto;max-width:100%;align-self:flex-start}
.hero-body{margin:auto 0;padding:48px 0;max-width:520px}
.eyebrow{display:inline-block;font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:#9fd8f5;border:1px solid rgba(159,216,245,.35);border-radius:999px;padding:6px 12px;margin-bottom:22px}
h1{font-size:clamp(32px,3.6vw,48px);line-height:1.1;margin:0 0 18px;font-weight:700;letter-spacing:-.025em}
h1 em{font-style:normal;color:var(--orange)}
.lead{margin:0 0 34px;color:#c4d3ea;font-size:17px;line-height:1.6}
.features{list-style:none;margin:0;padding:0;display:grid;gap:14px}
.features li{display:flex;gap:14px;align-items:center;padding:14px 16px;border-radius:12px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1)}
.features .ico{flex:none;width:40px;height:40px;border-radius:10px;display:grid;place-items:center;background:linear-gradient(135deg,#17aaf0,#0072b8)}
.features svg{width:22px;height:22px;fill:none;stroke:#fff;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.features b{display:block;font-size:15px;font-weight:600}
.features small{display:block;margin-top:2px;color:#a9bad6;font-size:13px}
.hero-foot{margin:0;color:#8ea2c2;font-size:13px}

/* ---------- right: sign-in ---------- */
.panel{display:grid;place-items:center;padding:40px 20px}
.card{width:100%;max-width:420px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:40px 36px;box-shadow:0 20px 50px -20px rgba(15,23,42,.18),0 2px 6px rgba(15,23,42,.04)}
.logo-dark{display:none;height:42px;width:auto;margin:0 0 24px}
.card h2{margin:0 0 10px;font-size:26px;font-weight:700;letter-spacing:-.015em}
.muted{margin:0 0 28px;color:var(--mute);line-height:1.6;font-size:15px}
.ms-btn{display:flex;align-items:center;justify-content:center;gap:12px;width:100%;padding:14px 18px;border:1px solid #c9d3e3;border-radius:10px;background:#fff;color:var(--ink);font-weight:600;font-size:16px;text-decoration:none;transition:border-color .15s,box-shadow .15s,transform .15s}
.ms-btn:hover,.ms-btn:focus-visible{border-color:var(--blue);box-shadow:0 10px 26px -8px rgba(0,151,227,.45);transform:translateY(-1px);outline:none}
.secure{display:flex;align-items:center;justify-content:center;gap:8px;margin:20px 0 0;color:var(--mute);font-size:13px}
.secure svg{width:16px;height:16px;fill:none;stroke:#16a34a;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.help{margin:26px 0 0;padding-top:20px;border-top:1px solid var(--line);color:var(--mute);font-size:13px;line-height:1.5;text-align:center}

/* ---------- small screens ---------- */
@media (max-width:900px){
 .shell{grid-template-columns:1fr}
 .hero{display:none}
 .logo-dark{display:block}
 .panel{min-height:100vh;padding:24px 16px}
 .card{padding:32px 24px}
}
.help a{color:var(--blue);text-decoration:none;font-weight:600}.help a:hover{text-decoration:underline}
.fine2{margin:14px 0 0;color:var(--mute);font-size:12px;line-height:1.5;text-align:center}