:root{color-scheme:light;--canvas:#f4f7fb;--surface:#fff;--soft:#eef3f7;--ink:#17202f;--body:#354052;--muted:#667085;--line:#d8e0ea;--primary:#0067b1;--primary-active:#004f8d;--granite:#1d9bf0;--success:#1f7a4d;--success-soft:#e8f5ee;--warning:#b85c1c;--warning-soft:#fff3e8;--danger:#b42318;--shadow:0 18px 50px rgba(23,32,47,.10)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-height:100vh;background:var(--canvas);color:var(--ink);font-family:Inter,"Segoe UI",Arial,sans-serif}
.brand-bar{height:72px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 max(28px,calc((100vw - 1180px)/2));gap:24px;position:sticky;top:0;z-index:10}
.granite-mark{display:flex;align-items:center;text-decoration:none;flex:0 0 auto}.granite-mark img{display:block;width:166px;height:auto;max-height:58px;object-fit:contain}
.product-mark{display:flex;align-items:center;gap:12px;color:#526173;font-size:.75rem;font-weight:700;letter-spacing:.09em;text-transform:uppercase;min-width:0;flex:0 1 auto}
.product-mark>span:first-child{color:var(--primary);font-weight:900}.divider{width:1px;height:20px;background:var(--line)}
.system-state{margin-left:auto;font-size:.72rem;color:var(--muted);display:flex;align-items:center;gap:7px;flex:0 0 auto}
.system-state>span.dot{width:8px;height:8px;border-radius:50%;background:#27ae72;box-shadow:0 0 0 4px #e6f6ee;flex:0 0 auto}
.nav-user{display:flex;align-items:center;gap:14px;font-size:.76rem;color:var(--muted);margin-left:auto;min-width:0;max-width:100%}
.nav-user .email{color:var(--ink);font-weight:600;max-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.nav-user .role{color:var(--muted);text-transform:uppercase;letter-spacing:.08em;font-size:.66rem;padding:2px 7px;border:1px solid var(--line);border-radius:999px}
.nav-link{color:inherit;text-decoration:none;font-weight:600}
.nav-link:hover{color:var(--primary)}
.nav-form{margin:0}
.nav-form button{font-size:.7rem;padding:5px 10px}
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.signal-graphic{height:210px;display:flex;align-items:center;justify-content:center;gap:10px;background:linear-gradient(145deg,#0067b1,#1d9bf0);border-radius:28px 28px 28px 4px;box-shadow:0 24px 54px rgba(0,103,177,.24);position:relative;overflow:hidden}.signal-graphic:before{content:"DTMF";position:absolute;left:24px;top:20px;color:#fff9;font:700 .68rem/1 Inter,sans-serif;letter-spacing:.18em}.signal-graphic:after{content:"1400 · 2300 Hz";position:absolute;right:24px;bottom:20px;color:#fff9;font:600 .65rem/1 Inter,sans-serif;letter-spacing:.1em}.signal-graphic span{display:block;width:10px;border-radius:9px;background:#fff;animation:pulse 1.8s ease-in-out infinite}.signal-graphic span:nth-child(1),.signal-graphic span:nth-child(9){height:30px}.signal-graphic span:nth-child(2),.signal-graphic span:nth-child(8){height:62px}.signal-graphic span:nth-child(3),.signal-graphic span:nth-child(7){height:104px}.signal-graphic span:nth-child(4),.signal-graphic span:nth-child(6){height:72px}.signal-graphic span:nth-child(5){height:136px}@keyframes pulse{50%{transform:scaleY(.62);opacity:.72}}
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