:root{
  --navy:#0b2345;
  --blue:#1457a6;
  --blue2:#0d6efd;
  --bg:#f4f7fb;
  --card:#ffffff;
  --text:#162033;
  --muted:#667085;
  --line:#e4e8ef;
  --danger:#b42318;
  --danger-bg:#fff1f0;
  --success:#087443;
  --success-bg:#ecfdf3;
  --shadow:0 12px 34px rgba(15,35,68,.08);
  --radius:18px;
}
*{box-sizing:border-box}
html{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--text)}
body{margin:0;min-height:100vh;background:linear-gradient(180deg,#f9fbfe 0%,#f1f5fa 100%)}
a{color:inherit;text-decoration:none}
.topbar{height:84px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 4vw;position:sticky;top:0;z-index:10}
.brand{display:flex;align-items:center;gap:14px}
.brand-mark{width:46px;height:46px;border-radius:14px;background:linear-gradient(135deg,var(--navy),var(--blue2));display:grid;place-items:center;color:#fff;font-weight:800;letter-spacing:-1px;box-shadow:0 8px 20px rgba(20,87,166,.22)}
.brand-title{font-weight:800;font-size:15px;color:var(--navy)}
.brand-subtitle{color:var(--muted);font-size:13px;margin-top:2px}
.top-actions{display:flex;gap:10px;flex-wrap:wrap}
.btn{border:1px solid transparent;border-radius:12px;padding:11px 16px;font-weight:700;font-size:14px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;transition:.18s ease}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:linear-gradient(135deg,var(--navy),var(--blue));color:#fff}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--navy)}
.btn-danger{background:#fff3f2;color:var(--danger);border-color:#ffd7d3}
.full{width:100%;margin-top:8px}
.center{text-align:center}
.shell{width:min(1180px,92vw);margin:42px auto}
.hero{display:flex;justify-content:space-between;gap:30px;align-items:flex-end;margin-bottom:28px}
.eyebrow{text-transform:uppercase;letter-spacing:.12em;font-size:12px;font-weight:800;color:var(--blue)}
h1{font-size:clamp(30px,4vw,48px);line-height:1.05;margin:8px 0 12px;color:var(--navy)}
.hero p{max-width:720px;margin:0;color:var(--muted);font-size:16px;line-height:1.65}
.session-card{white-space:nowrap;background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px 15px;box-shadow:var(--shadow);font-size:14px;color:var(--muted)}
.status-dot{display:inline-block;width:9px;height:9px;background:#12b76a;border-radius:50%;margin-right:8px}
.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.tool-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;display:grid;grid-template-columns:62px 1fr auto;gap:18px;align-items:center;box-shadow:var(--shadow);transition:.2s ease}
.tool-card:hover{transform:translateY(-3px);border-color:#c9d8ed;box-shadow:0 18px 42px rgba(15,35,68,.12)}
.tool-icon{width:62px;height:62px;border-radius:17px;background:#eef5ff;display:grid;place-items:center}
.tool-icon svg{width:30px;height:30px;fill:none;stroke:var(--blue);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.tool-card h2{font-size:18px;margin:0 0 6px;color:var(--navy)}
.tool-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.5}
.arrow{font-size:24px;color:#97a6ba}
.notice{margin-top:24px;background:#fff;border:1px solid var(--line);border-left:4px solid var(--blue);border-radius:14px;padding:17px 18px;color:var(--muted);font-size:13px;line-height:1.6}
footer{text-align:center;color:#8995a7;font-size:12px;padding:8px 20px 30px}
.auth-page{display:grid;place-items:center;padding:28px}
.auth-wrap{width:min(460px,94vw)}
.auth-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:32px;box-shadow:0 24px 60px rgba(15,35,68,.12)}
.auth-brand{margin-bottom:28px}
.auth-card h1{font-size:32px;margin-bottom:8px}
.muted{color:var(--muted);line-height:1.55;margin-top:0}
.tiny{text-align:center;color:#98a2b3;font-size:12px;margin:18px 0 0}
form{display:grid;gap:16px;margin-top:24px}
label{display:grid;gap:8px;font-weight:700;font-size:13px;color:#344054}
input{width:100%;border:1px solid #d0d5dd;border-radius:11px;padding:13px 14px;font:inherit;color:var(--text);background:#fff;outline:none}
input:focus{border-color:#82aee0;box-shadow:0 0 0 4px rgba(20,87,166,.1)}
.password-row{display:flex;gap:8px}
.show-btn{border:1px solid #d0d5dd;background:#fff;border-radius:11px;padding:0 13px;font-weight:700;color:var(--navy);cursor:pointer}
.alert{border-radius:12px;padding:12px 14px;font-size:13px;margin-top:16px}
.alert.error{color:var(--danger);background:var(--danger-bg);border:1px solid #ffd4cf}
.alert.success{color:var(--success);background:var(--success-bg);border:1px solid #abefc6}
@media (max-width:820px){
  .topbar{height:auto;min-height:84px;padding:16px 5vw;gap:14px;align-items:flex-start}
  .top-actions{justify-content:flex-end}
  .brand-title{font-size:14px}
  .grid{grid-template-columns:1fr}
  .hero{align-items:flex-start;flex-direction:column}
  .session-card{white-space:normal}
}
@media (max-width:560px){
  .topbar{flex-direction:column}
  .top-actions{width:100%}
  .top-actions .btn{flex:1}
  .tool-card{grid-template-columns:52px 1fr auto;padding:18px;gap:13px}
  .tool-icon{width:52px;height:52px}
  .auth-card{padding:24px}
}