:root {
  --navy: #0A3158;
  --navy-deep: #071F3A;
  --teal: #169BA2;
  --teal-dark: #10797F;
  --orange: #F87F16;
  --mist: #EEF3F7;
  --line: #D5DEE8;
  --text: #0A3158;
  --muted: #4E6176;
  --white: #FFFFFF;
  --display: "Montserrat", "Segoe UI", system-ui, sans-serif;
  --body: "Source Sans 3", "Segoe UI", system-ui, sans-serif;
  --wrap: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--body); font-size: 1.0625rem; line-height: 1.6; color: var(--text); background: var(--white); -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--teal-dark); }
a:focus-visible, .btn:focus-visible { outline: 3px solid var(--orange); outline-offset: 3px; border-radius: 4px; }
h1, h2, h3 { font-family: var(--display); line-height: 1.15; margin: 0 0 0.5em; letter-spacing: -0.01em; }
h2 { font-size: clamp(1.75rem, 3.2vw, 2.4rem); font-weight: 800; }
h3 { font-size: 1.15rem; font-weight: 700; }
p { margin: 0 0 1em; max-width: 64ch; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--white); color: var(--navy); padding: 8px 12px; z-index: 10; }
.skip:focus { left: 8px; }

/* ---------- header ---------- */
.top { background: var(--navy); position: sticky; top: 0; z-index: 5; border-bottom: 1px solid rgba(255,255,255,0.08); }
.top-row { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand img { width: 168px; height: auto; }
.top nav { display: flex; gap: 28px; align-items: center; }
.top nav a { color: #C9D6E6; text-decoration: none; font-weight: 600; font-size: 0.98rem; }
.top nav a:hover { color: var(--white); }
.top nav .nav-cta { color: var(--white); background: var(--teal); padding: 8px 16px; border-radius: 6px; }
.top nav .nav-cta:hover { background: var(--teal-dark); }

/* ---------- hero ---------- */
.hero { background: var(--navy); color: var(--white); padding: 72px 0 88px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: 56px; align-items: center; }
.hero h1 { font-size: clamp(2.1rem, 4.6vw, 3.5rem); font-weight: 800; letter-spacing: -0.02em; max-width: 15ch; }
.hero .lead { color: #C9D6E6; font-size: 1.15rem; max-width: 52ch; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 28px; }
.btn { display: inline-block; text-decoration: none; font-family: var(--display); font-weight: 700; font-size: 0.98rem; padding: 13px 22px; border-radius: 6px; }
.btn-primary { background: var(--teal); color: var(--white); }
.btn-primary:hover { background: var(--teal-dark); }
.btn-ghost { color: var(--white); border: 1.5px solid rgba(255,255,255,0.35); }
.btn-ghost:hover { border-color: var(--white); }

/* the live panel: the one memorable element */
.panel { margin: 0; background: var(--navy-deep); border: 1px solid rgba(255,255,255,0.12); border-radius: 12px; padding: 22px 22px 14px; box-shadow: 0 24px 60px rgba(3, 14, 28, 0.45); }
.panel-head { display: flex; justify-content: space-between; align-items: center; padding-bottom: 14px; border-bottom: 1px solid rgba(255,255,255,0.1); margin-bottom: 6px; }
.panel-title { font-family: var(--display); font-weight: 700; font-size: 0.98rem; color: var(--white); }
.panel-state { font-size: 0.9rem; color: #8FE3E7; display: inline-flex; align-items: center; gap: 8px; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: #3FD3A0; box-shadow: 0 0 0 4px rgba(63, 211, 160, 0.18); }
.reading { display: grid; grid-template-columns: 64px 1fr 120px; grid-template-rows: auto auto; column-gap: 16px; align-items: center; padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,0.07); }
.reading:last-of-type { border-bottom: 0; }
.r-name { grid-row: 1 / span 2; font-family: var(--display); font-weight: 700; color: #8FB2D6; font-size: 1rem; }
.r-value { font-family: var(--display); font-weight: 800; font-size: 2rem; line-height: 1; color: var(--white); font-variant-numeric: tabular-nums; }
.r-value .unit { font-family: var(--body); font-weight: 400; font-size: 0.85rem; color: #8FB2D6; }
.spark { grid-column: 3; grid-row: 1 / span 2; width: 120px; height: 40px; }
.spark .line { fill: none; stroke: var(--teal); stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; vector-effect: non-scaling-stroke; }
.spark .limit { stroke: var(--orange); stroke-width: 1; stroke-dasharray: 4 3; vector-effect: non-scaling-stroke; }
.r-limit { font-size: 0.85rem; color: var(--orange); }
.panel-note { font-size: 0.8rem; color: #6F8BA8; margin: 10px 0 0; }

/* ---------- products ---------- */
.product { padding: 96px 0; border-bottom: 1px solid var(--line); }
.product.alt { background: var(--mist); }
.product-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 64px; align-items: start; }
.kicker { font-family: var(--display); font-weight: 600; color: var(--teal-dark); font-size: 1.1rem; }
.facts { list-style: none; margin: 0; padding: 0; border-top: 2px solid var(--navy); }
.facts li { padding: 16px 0; border-bottom: 1px solid var(--line); color: var(--muted); }
.facts strong { color: var(--text); font-weight: 600; }

/* ---------- service ---------- */
.service { padding: 96px 0; }
.section-lead { color: var(--muted); font-size: 1.12rem; }
.service-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 64px; margin-top: 36px; }
.service-list > div { padding: 22px 0; border-top: 1px solid var(--line); }
.service-list p { color: var(--muted); margin: 0; }

/* ---------- contact ---------- */
.contact { background: var(--navy); color: var(--white); padding: 88px 0; }
.contact p { color: #C9D6E6; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.contact-list { margin: 0; }
.contact-list > div { padding: 16px 0; border-bottom: 1px solid rgba(255,255,255,0.14); }
.contact-list dt { font-size: 0.9rem; color: #8FB2D6; }
.contact-list dd { margin: 2px 0 0; font-family: var(--display); font-weight: 700; font-size: 1.3rem; }
.contact-list a { color: var(--white); text-decoration: none; border-bottom: 2px solid var(--orange); }
.contact-list a:hover { color: #FFD9B8; }

/* ---------- footer ---------- */
.foot { background: var(--navy-deep); color: #8FB2D6; padding: 28px 0; font-size: 0.92rem; }
.foot-row { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.foot p { margin: 0; }
.foot .copy { margin-left: auto; }

/* ---------- small screens ---------- */
@media (max-width: 860px) {
  .hero { padding: 48px 0 64px; }
  .hero-grid, .product-grid, .contact-grid { grid-template-columns: 1fr; gap: 36px; }
  .service-list { grid-template-columns: 1fr; }
  .product, .service { padding: 64px 0; }
  .top nav { gap: 16px; }
  .top nav a:not(.nav-cta) { display: none; }
}
@media (max-width: 420px) {
  .reading { grid-template-columns: 52px 1fr 84px; column-gap: 10px; }
  .spark { width: 84px; }
  .r-value { font-size: 1.6rem; }
  .foot .copy { margin-left: 0; }
}

/* ---------- inner pages ---------- */
.more { margin-top: 20px; }
.more a { font-family: var(--display); font-weight: 700; color: var(--teal-dark); text-decoration: none; border-bottom: 2px solid var(--teal); padding-bottom: 2px; }
.more a:hover { color: var(--navy); border-color: var(--navy); }
.top nav a[aria-current="page"] { color: var(--white); box-shadow: inset 0 -2px 0 var(--orange); }
.page-head { background: var(--navy); color: var(--white); padding: 64px 0 56px; }
.page-head h1 { font-size: clamp(2rem, 4.2vw, 3rem); font-weight: 800; letter-spacing: -0.02em; max-width: 20ch; }
.page-head p { color: #C9D6E6; font-size: 1.15rem; max-width: 60ch; margin: 0; }
.block { padding: 80px 0; border-bottom: 1px solid var(--line); }
.block.alt { background: var(--mist); }
.shot { margin: 0; }
.shot img { width: 100%; border-radius: 10px; border: 1px solid var(--line); box-shadow: 0 18px 48px rgba(10, 49, 88, 0.14); }
.shot figcaption { color: var(--muted); font-size: 0.92rem; margin-top: 12px; }
.page-head .shot { margin-top: 48px; }
.page-head .shot img { border-color: rgba(255,255,255,0.15); box-shadow: 0 24px 60px rgba(3, 14, 28, 0.45); }
.page-head .shot figcaption { color: #8FB2D6; }
.steps { list-style: none; margin: 32px 0 0; padding: 0; counter-reset: step; display: grid; grid-template-columns: repeat(4, 1fr); gap: 0 32px; }
.steps li { counter-increment: step; border-top: 2px solid var(--navy); padding-top: 18px; color: var(--muted); }
.steps li::before { content: counter(step); display: block; font-family: var(--display); font-weight: 800; font-size: 2rem; color: var(--teal); line-height: 1; margin-bottom: 10px; }
.steps strong { display: block; color: var(--text); font-family: var(--display); font-weight: 700; margin-bottom: 6px; }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.spec { width: 100%; border-collapse: collapse; margin-top: 8px; }
.spec th, .spec td { text-align: left; padding: 12px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.spec th { width: 40%; font-weight: 600; color: var(--text); padding-right: 16px; }
.spec td { color: var(--muted); }
.cta-band { background: var(--navy); color: var(--white); padding: 64px 0; }
.cta-band .wrap { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.cta-band h2 { margin: 0; font-size: clamp(1.5rem, 2.6vw, 2rem); }
.cta-band p { color: #C9D6E6; margin: 6px 0 0; }
@media (max-width: 860px) {
  .steps { grid-template-columns: 1fr 1fr; gap: 28px 24px; }
  .two { grid-template-columns: 1fr; gap: 36px; }
  .block { padding: 56px 0; }
}
@media (max-width: 480px) { .steps { grid-template-columns: 1fr; } }

/* ---------- monitor page: live data and support ---------- */
.stations { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 32px; }
.station { padding: 18px 20px 8px; }
.station .panel-head { margin-bottom: 0; }
.panel-state.warn { color: #FFB27A; }
.panel-state.warn .dot { background: var(--orange); box-shadow: 0 0 0 4px rgba(248, 127, 22, 0.2); }
.support-grid { margin-top: 48px; }
.support-grid h3 { margin-top: 0; }
.support-grid p a { color: var(--teal-dark); }
@media (max-width: 860px) { .stations { grid-template-columns: 1fr; } }