:root{
  --bg:#f3f6fc; --card:#fff; --soft:#f8faff; --text:#1e2a44; --muted:#6b7280; --line:#dde5f2;
  --blue:#2f80ed; --cyan:#00e6ff; --violet:#7b3cff; --amber:#ffb000; --green:#22c55e; --red:#e63946;
  --dark:#070b14; --navy:#0b1220; --radius:22px; --shadow:0 18px 45px rgba(30,42,68,.08);
  --safe-bottom: env(safe-area-inset-bottom,0px);
}
*{box-sizing:border-box} body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--text);background:var(--bg)} a{text-decoration:none;color:inherit} img{max-width:100%}
.lux-badge{display:inline-flex;align-items:center;gap:8px;width:max-content;border:1px solid rgba(0,230,255,.3);background:linear-gradient(90deg,rgba(0,230,255,.12),rgba(123,60,255,.10));color:#096f91;border-radius:999px;padding:8px 12px;font-weight:800;font-size:.76rem;text-transform:uppercase;letter-spacing:.06em}
.primary-btn,.ghost-btn,.icon-btn{border:0;border-radius:16px;font-weight:800;cursor:pointer}.primary-btn{width:100%;padding:15px 18px;background:linear-gradient(135deg,var(--blue),#00a7ff);color:#fff;box-shadow:0 16px 35px rgba(47,128,237,.25)}.ghost-btn{display:inline-flex;align-items:center;justify-content:center;padding:11px 14px;background:#eef5ff;color:#2563eb;border:1px solid #dbeafe}.ghost-btn.compact{padding:9px 12px}.icon-btn{width:44px;height:44px;background:#fff;border:1px solid var(--line);font-size:1.1rem;color:var(--text)}
.error-box,.success-box{padding:14px 16px;border-radius:16px;margin:0 0 16px}.error-box{background:#fff1f2;border:1px solid #fecdd3;color:#b91c1c}.success-box{background:#ecfdf5;border:1px solid #bbf7d0;color:#047857}.success-box a{font-weight:900;text-decoration:underline}
/* install/login */
.install-screen,.login-screen{min-height:100vh;background:radial-gradient(circle at top left,rgba(0,230,255,.18),transparent 28%),linear-gradient(135deg,#f8fbff,#eef4ff 55%,#f7f5ff);display:grid;place-items:center;padding:24px}.install-shell,.login-shell{width:min(1120px,100%);display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:stretch}.install-hero,.brand-panel{border-radius:32px;background:linear-gradient(145deg,var(--dark),#101a35);color:#fff;padding:34px;box-shadow:var(--shadow);display:flex;flex-direction:column;justify-content:center;position:relative;overflow:hidden}.install-hero:after,.brand-panel:after{content:"";position:absolute;width:280px;height:280px;border-radius:999px;background:radial-gradient(circle,rgba(0,230,255,.25),transparent 62%);right:-90px;bottom:-90px}.install-logo,.login-logo{width:min(330px,90%);height:auto;object-fit:contain;margin-bottom:26px}.install-hero h1,.brand-panel h1{font-size:clamp(2rem,5vw,4.2rem);line-height:.95;margin:16px 0}.install-hero p,.brand-panel p{font-size:1.08rem;color:#cbd5e1;max-width:560px}.install-card,.login-card{background:rgba(255,255,255,.88);backdrop-filter:blur(16px);border:1px solid rgba(255,255,255,.6);border-radius:32px;padding:28px;box-shadow:var(--shadow)}.install-form{display:grid;gap:13px}.install-form h2,.login-card h2{margin:16px 0 8px}.install-form label,.login-card label{display:grid;gap:7px;color:var(--muted);font-weight:800;font-size:.88rem}.install-form input,.login-card input{border:1px solid var(--line);border-radius:15px;padding:14px 15px;font-size:1rem;background:#fff;color:var(--text)}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.requirements-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-bottom:16px}.requirement{display:flex;gap:8px;align-items:center;border-radius:14px;padding:10px 12px;border:1px solid var(--line);background:var(--soft);font-weight:800;font-size:.86rem}.requirement.ok span{color:var(--green)}.requirement.bad{background:#fff1f2;color:#b91c1c}.device-strip{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}.device-strip span{border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.08);padding:9px 12px;border-radius:999px;color:#dffbff;font-weight:800;font-size:.82rem}
/* app */
.app-shell{min-height:100vh;display:grid;grid-template-columns:292px 1fr}.sidebar{height:100vh;position:sticky;top:0;background:#fff;border-right:1px solid var(--line);padding:18px;display:flex;flex-direction:column;gap:18px}.sidebar-brand{display:flex;gap:12px;align-items:center;padding:10px}.sidebar-brand img{width:42px;height:42px;object-fit:contain}.sidebar-brand strong{display:block;font-size:1.05rem}.sidebar-brand span{font-size:.78rem;color:var(--muted);font-weight:800}.side-nav{display:flex;flex-direction:column;gap:4px;overflow:auto;padding-bottom:8px}.side-nav small{color:#94a3b8;text-transform:uppercase;font-size:.7rem;font-weight:900;letter-spacing:.08em;margin:16px 10px 6px}.side-nav a{display:flex;align-items:center;gap:11px;border-radius:15px;padding:11px 12px;color:#41506a;font-weight:850}.side-nav a span{width:28px;height:28px;display:grid;place-items:center;border-radius:10px;background:#edf5ff;color:var(--blue)}.side-nav a.active{background:linear-gradient(135deg,#eaf4ff,#f2f7ff);color:#0f4cbb}.side-nav a.active span{background:linear-gradient(135deg,var(--blue),#00a7ff);color:#fff}.branch-box{margin-top:auto;border:1px solid var(--line);background:var(--soft);border-radius:20px;padding:14px}.branch-box strong,.branch-box span{display:block}.branch-box span{color:var(--muted);font-size:.82rem;margin-top:4px}.main-area{min-width:0}.topbar{height:74px;display:flex;align-items:center;gap:14px;justify-content:space-between;padding:14px 24px;background:rgba(243,246,252,.82);backdrop-filter:blur(16px);position:sticky;top:0;z-index:20;border-bottom:1px solid rgba(221,229,242,.75)}.topbar>div{margin-right:auto}.topbar strong,.topbar span{display:block}.topbar span{font-size:.82rem;color:var(--muted);font-weight:800}.content{padding:26px;max-width:1500px;margin:0 auto 80px}.page-head{background:linear-gradient(135deg,#fff,#f7fbff);border:1px solid var(--line);border-radius:30px;padding:26px;box-shadow:var(--shadow);margin-bottom:22px}.page-head.hero-light{background:radial-gradient(circle at top right,rgba(0,230,255,.18),transparent 34%),linear-gradient(135deg,#fff,#f6f9ff)}.page-head h1{font-size:clamp(1.8rem,3vw,3.4rem);letter-spacing:-.04em;margin:12px 0 8px}.page-head p{color:var(--muted);font-size:1rem;max-width:880px}.metric-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:22px}.metric-grid article{background:#fff;border:1px solid var(--line);border-radius:24px;padding:20px;box-shadow:var(--shadow)}.metric-grid strong{display:block;font-size:clamp(1.6rem,3vw,2.4rem);letter-spacing:-.05em}.metric-grid span{color:var(--muted);font-weight:800}.pro-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.pro-card{background:#fff;border:1px solid var(--line);border-radius:26px;padding:22px;box-shadow:var(--shadow);min-height:190px;display:flex;flex-direction:column;align-items:flex-start}.pro-card.highlight{background:linear-gradient(135deg,#fff,#eff8ff);border-color:#bfdbfe}.card-icon{width:48px;height:48px;border-radius:17px;background:linear-gradient(135deg,#eff6ff,#e0faff);display:grid;place-items:center;color:#2563eb;font-size:1.35rem;font-weight:900}.pro-card h3{margin:18px 0 8px}.pro-card p{color:var(--muted);line-height:1.5;margin:0 0 18px}.pro-card .ghost-btn{margin-top:auto}.device-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px}.device-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:18px;box-shadow:var(--shadow)}.device-card h3{margin-top:0}.device-card p{color:var(--muted);font-size:.92rem}.bottom-nav{display:none}.drawer-backdrop{display:none}
@media (max-width:1199px){.app-shell{grid-template-columns:1fr}.sidebar{position:fixed;z-index:100;left:0;top:0;bottom:0;width:min(88vw,360px);transform:translateX(-105%);transition:.24s ease;box-shadow:30px 0 70px rgba(30,42,68,.22)}body.drawer-open .sidebar{transform:translateX(0)}body.drawer-open .drawer-backdrop{display:block;position:fixed;inset:0;background:rgba(15,23,42,.35);z-index:90}.metric-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.pro-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.device-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.content{padding:18px 18px 92px}.topbar{padding:12px 16px}}
@media (max-width:767px){.install-screen,.login-screen{padding:12px;place-items:start}.install-shell,.login-shell{grid-template-columns:1fr;gap:14px}.install-hero,.brand-panel,.install-card,.login-card{border-radius:24px;padding:22px}.install-hero h1,.brand-panel h1{font-size:2.25rem}.form-grid,.requirements-grid,.metric-grid,.pro-grid,.device-grid{grid-template-columns:1fr}.topbar{height:64px}.topbar .ghost-btn{display:none}.content{padding:14px 12px 96px}.page-head{border-radius:24px;padding:20px}.pro-card{min-height:160px}.bottom-nav{position:fixed;left:10px;right:10px;bottom:calc(10px + var(--safe-bottom));height:68px;z-index:80;display:grid;grid-template-columns:repeat(5,1fr);background:rgba(255,255,255,.94);border:1px solid rgba(221,229,242,.9);box-shadow:0 18px 45px rgba(30,42,68,.22);backdrop-filter:blur(18px);border-radius:24px;padding:7px}.bottom-nav a,.bottom-nav button{border:0;background:transparent;border-radius:17px;display:grid;place-items:center;color:#64748b;font-size:1.05rem;font-weight:900}.bottom-nav span{font-size:.65rem}.bottom-nav .active{background:linear-gradient(135deg,var(--blue),#00a7ff);color:#fff}.sidebar{padding-bottom:90px}}
@media (min-width:1600px){:root{--radius:28px}.content{max-width:1800px}.topbar{height:86px}.page-head{padding:34px}.pro-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.pro-card{min-height:230px}.side-nav a{font-size:1.02rem;padding:14px}.sidebar{width:330px}.app-shell{grid-template-columns:330px 1fr}}
@media (min-width:1920px){body{font-size:18px}.content{padding:36px}.metric-grid article,.pro-card,.device-card{border-radius:32px}.page-head h1{font-size:4rem}.card-icon{width:62px;height:62px;font-size:1.7rem}}