:root{--navy:#172d5a;--navy-dark:#0d1e3f;--blue:#2798dc;--blue-light:#70c8ff;--ink:#172238;--muted:#667085;--line:#d7e4ec;--paper:#fff;--wash:#f3f7fa;--red:#d93636;--radius:18px;--shadow:0 18px 50px rgba(23,45,90,.1)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--paper);font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Arial,sans-serif;line-height:1.6}img{display:block;max-width:100%}a{color:inherit}.wrap{width:min(1160px,calc(100% - 40px));margin-inline:auto}.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.header-inner{display:flex;min-height:68px;align-items:center;justify-content:space-between;gap:30px}.brand img{width:132px}.site-header nav{display:flex;gap:24px}.site-header nav a{color:var(--navy);font-size:.9rem;font-weight:750;text-decoration:none}.site-header nav a:hover,.site-header nav a:focus-visible{color:var(--blue)}.hero{padding:74px 0 82px;background:radial-gradient(circle at 12% 0,rgba(39,152,220,.24),transparent 26rem),linear-gradient(135deg,var(--navy-dark),var(--navy));color:#fff;overflow:hidden}.hero-grid{display:grid;grid-template-columns:430px 1fr;align-items:center;gap:72px}.hero-art{overflow:hidden;border:1px solid rgba(255,255,255,.16);border-radius:24px;background:rgba(255,255,255,.08);box-shadow:0 22px 45px rgba(0,0,0,.2)}.hero-art img{width:100%;aspect-ratio:1.18;object-fit:cover}.eyebrow{margin:0 0 9px;color:var(--blue);font-size:.76rem;font-weight:850;letter-spacing:.14em;text-transform:uppercase}.hero .eyebrow{color:var(--blue-light)}h1,h2,h3{margin:0;color:var(--navy);font-family:inherit}.hero h1{color:#fff;font-size:clamp(2.8rem,6vw,5.6rem);line-height:.94;letter-spacing:-.055em}.subtitle{margin:20px 0 12px;color:#fff;font-size:clamp(1.2rem,2.4vw,1.75rem);font-weight:750;line-height:1.18}.intro{max-width:720px;margin:0;color:#d9e3f2;font-size:1.08rem}.hero-actions{display:flex;flex-wrap:wrap;gap:11px;margin-top:28px}.button{display:inline-flex;min-height:44px;align-items:center;justify-content:center;padding:0 18px;border:1px solid rgba(255,255,255,.35);border-radius:999px;color:#fff;font-size:.88rem;font-weight:750;text-decoration:none}.button.primary{border-color:var(--blue);background:var(--blue)}.button:hover,.button:focus-visible{border-color:#fff}.feature-strip{border-bottom:1px solid var(--line);background:var(--wash)}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr)}.feature-grid article{padding:26px 30px;border-right:1px solid var(--line)}.feature-grid article:last-child{border-right:0}.feature-grid span,.step-number{display:inline-grid;place-items:center;background:#eaf6fc;color:var(--blue);font-weight:900;border-radius:10px;width:38px;height:38px}.feature-grid h2{margin:10px 0 2px;font-size:1.05rem}.feature-grid p{margin:0;color:var(--muted);font-size:.93rem}.section{padding:84px 0}.section-tint{background:var(--wash)}.section-heading{max-width:840px;margin-bottom:30px}.section-heading h2{font-size:clamp(2rem,4.5vw,3.25rem);line-height:1.05;letter-spacing:-.04em}.section-heading>p:last-child{margin-top:14px;color:var(--muted);font-size:1.05rem}.prep-grid{display:grid;grid-template-columns:1fr 1.25fr;align-items:stretch;gap:18px}.info-card,.board-photo,.step,.method-card{border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:0 8px 26px rgba(22,45,90,.04)}.info-card{padding:28px}.info-card h3{font-size:1.3rem}.checklist{margin:16px 0 0;padding-left:1.25rem;color:var(--muted)}.checklist li+li{margin-top:8px}.board-photo{overflow:hidden;margin:0}.board-photo img{width:100%;height:100%;min-height:260px;object-fit:cover}.board-photo figcaption,.single-photo figcaption{padding:14px 18px;color:var(--muted);font-size:.86rem}.warning,.step-note{margin-top:20px;padding:16px 18px;border-left:5px solid var(--red);background:#fff1f1;color:#622}.step-note{margin:0 0 20px;border-left-color:var(--blue);background:#eaf6fc;color:var(--navy)}.steps{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.step{display:flex;align-items:flex-start;gap:18px;padding:24px}.step-number{flex:0 0 42px;width:42px;height:42px;background:var(--blue);color:#fff;font-size:1.12rem}.step h3{margin-top:2px;font-size:1.22rem}.step p{margin:8px 0 0;color:var(--muted)}.step ul{margin:12px 0 0;padding-left:1.25rem;color:var(--muted)}.step--wide{grid-column:1/-1}.note{margin-top:14px!important;color:#7a4141!important}.single-photo{max-width:680px;overflow:hidden;margin:22px 0 0;border:1px solid var(--line);border-radius:15px;background:#fff}.single-photo img{width:100%;height:auto}.terminal-order{display:grid;grid-template-columns:repeat(3,1fr);max-width:420px;margin-top:16px;overflow:hidden;border:1px solid var(--line);border-radius:12px}.terminal-order span{padding:10px;text-align:center;color:var(--navy);font-weight:850;background:#f5faff}.terminal-order span+span{border-left:1px solid var(--line)}.sound-table{margin-top:20px;overflow:hidden;border:1px solid var(--line);border-radius:14px}.sound-row{display:grid;grid-template-columns:170px 1fr;gap:18px;padding:12px 16px;background:#fff}.sound-row+.sound-row{border-top:1px solid var(--line)}.sound-row--header{background:#eaf6fc;color:var(--navy);font-size:.78rem;letter-spacing:.08em;text-transform:uppercase}.sound-row code{color:var(--navy);font-size:.92rem;font-weight:800}.sound-row span{color:var(--muted)}.warning--end{margin-top:30px}footer{padding:26px 0;background:#081732;color:#aebcd1;font-size:.84rem}footer .wrap{display:flex;justify-content:space-between;gap:20px}
@media(max-width:900px){.hero-grid{grid-template-columns:330px 1fr;gap:36px}}
@media(max-width:760px){.site-header nav{width:100%;gap:18px;overflow-x:auto;padding:8px 0 2px;scrollbar-width:none}.site-header nav::-webkit-scrollbar{display:none}.header-inner{flex-wrap:wrap;gap:0;padding-block:10px}.hero{padding:55px 0}.hero-grid,.prep-grid{grid-template-columns:1fr}.hero-art{max-width:480px;margin:auto}.steps{grid-template-columns:1fr}.step--wide{grid-column:auto}.feature-grid{grid-template-columns:1fr}.feature-grid article{border-right:0;border-bottom:1px solid var(--line)}.feature-grid article:last-child{border-bottom:0}.section{padding:62px 0}}
@media(max-width:520px){.wrap{width:min(100% - 26px,1160px)}.hero-copy{text-align:center}.hero-actions{justify-content:center}.sound-row{grid-template-columns:1fr;gap:2px}.sound-row--header{display:none}.terminal-order{max-width:none}footer .wrap{flex-direction:column}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
.terminal-order .terminal-red{color:var(--red)}.terminal-order .terminal-blue{color:var(--blue)}.wire-tap-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:22px}.wire-tap-grid figure{overflow:hidden;margin:0;border:1px solid var(--line);border-radius:15px;background:#fff}.wire-tap-grid img{width:100%;height:280px;object-fit:cover}.wire-tap-grid figcaption{padding:14px 18px;color:var(--muted);font-size:.86rem}
@media(max-width:520px){.wire-tap-grid{grid-template-columns:1fr}.wire-tap-grid img{height:auto;max-height:none;object-fit:contain}}
.operations-hero{padding:50px 0 56px}.operations-hero .hero-grid{grid-template-columns:220px 1fr;gap:44px}.operations-hero .hero-art{max-width:220px}.operations-hero .hero-art img{object-fit:contain}
.status-table .sound-row{grid-template-columns:130px 230px 1fr}
.troubleshooting-table .sound-row{grid-template-columns:1.05fr 1fr 1.2fr}
@media(max-width:520px){.status-table .sound-row{grid-template-columns:1fr;gap:2px}.status-table .sound-row--header{display:none}}
@media(max-width:520px){.troubleshooting-table .sound-row{grid-template-columns:1fr;gap:2px}.troubleshooting-table .sound-row--header{display:none}}
@media(max-width:900px){.operations-hero .hero-grid{grid-template-columns:220px 1fr;gap:32px}}
@media(max-width:760px){.operations-hero .hero-art{margin:auto}.operations-hero .hero-grid{grid-template-columns:1fr}}