:root {
  --bg: #071018;
  --bg-deep: #03080d;
  --surface: #0b1721;
  --surface-2: #101e29;
  --line: rgba(151, 194, 216, .18);
  --line-strong: rgba(151, 194, 216, .34);
  --text: #f1f6f8;
  --muted: #9aaab3;
  --cyan: #65d7e9;
  --cyan-soft: #b7eef5;
  --amber: #f0ab5a;
  --green: #79d6a5;
  --shadow: 0 32px 80px rgba(0, 0, 0, .38);
  --radius: 18px;
  --max: 1240px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 104px; }
body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  background:
    radial-gradient(circle at 10% 6%, rgba(47, 104, 128, .20), transparent 28rem),
    radial-gradient(circle at 88% 28%, rgba(38, 74, 93, .14), transparent 30rem),
    linear-gradient(180deg, var(--bg-deep), var(--bg) 28%, #08131c 72%, var(--bg-deep));
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: .24;
  background-image: linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, #000, transparent 88%);
}

img { display: block; max-width: 100%; }
a { color: inherit; }
button, input { font: inherit; }
button { color: inherit; }

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  transform: translateY(-160%);
  padding: 10px 14px;
  color: #061016;
  background: var(--cyan-soft);
  border-radius: 6px;
  font-weight: 800;
}
.skip-link:focus { transform: translateY(0); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.section-shell { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }
.section { padding-block: 112px; }
main section[id] { scroll-margin-top: 104px; }

.site-header {
  position: fixed;
  top: 14px;
  left: 50%;
  z-index: 100;
  width: min(calc(100% - 28px), 1320px);
  min-height: 68px;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(4, 11, 16, .80);
  backdrop-filter: blur(18px);
  box-shadow: 0 12px 44px rgba(0,0,0,.24);
}

.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 900; letter-spacing: .14em; }
.brand small { color: var(--muted); font-size: .68rem; letter-spacing: .16em; }
.brand-beacon { width: 10px; height: 10px; border: 2px solid var(--cyan); border-radius: 50%; box-shadow: 0 0 0 5px rgba(101,215,233,.08); }
.site-nav { display: flex; align-items: center; gap: 24px; }
.site-nav a { color: #a7b5bc; text-decoration: none; font-size: .76rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; transition: color .2s ease; }
.site-nav a:hover, .site-nav a:focus-visible { color: var(--cyan-soft); }
.site-nav .nav-cta { padding: 9px 13px; border: 1px solid var(--line-strong); border-radius: 6px; color: var(--text); }
.menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 8px; background: transparent; cursor: pointer; }
.menu-toggle span:not(.sr-only) { display: block; width: 20px; height: 2px; margin: 4px auto; background: var(--text); }

.hero { min-height: 100svh; display: grid; grid-template-columns: .82fr 1.18fr; align-items: center; gap: clamp(32px, 5vw, 72px); padding-top: 116px; padding-bottom: 58px; }
.eyebrow { margin: 0 0 18px; color: var(--cyan); font-size: .75rem; font-weight: 800; letter-spacing: .20em; text-transform: uppercase; }
.status-light { display: inline-block; width: 7px; height: 7px; margin-right: 9px; border-radius: 50%; background: var(--green); box-shadow: 0 0 10px rgba(121,214,165,.7); animation: pulse 2.2s infinite; }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 26px; font-size: clamp(3.8rem, 7.3vw, 7.7rem); line-height: .84; letter-spacing: -.07em; text-transform: uppercase; }
h1 em { color: var(--cyan-soft); font-family: Georgia, "Times New Roman", serif; font-weight: 400; text-transform: none; }
h2 { margin-bottom: 20px; font-size: clamp(2.5rem, 5vw, 5rem); line-height: .98; letter-spacing: -.055em; }
h3 { margin-bottom: 14px; font-size: 1.8rem; line-height: 1.14; letter-spacing: -.035em; }
.hero-lead { max-width: 580px; color: #bbc8ce; font-size: clamp(1.05rem, 1.5vw, 1.25rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 11px; margin: 32px 0 38px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 19px; border-radius: 7px; text-decoration: none; font-size: .77rem; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; transition: transform .2s ease, border-color .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: #061017; background: var(--cyan-soft); box-shadow: 0 10px 28px rgba(101,215,233,.12); }
.button-ghost { border: 1px solid var(--line-strong); background: rgba(255,255,255,.02); }
.button-ghost:hover { border-color: var(--cyan); }
.station-facts { display: flex; flex-wrap: wrap; gap: 24px; margin: 0; }
.station-facts div { padding-left: 12px; border-left: 1px solid var(--line-strong); }
.station-facts dt, .station-facts dd { margin: 0; }
.station-facts dt { color: #6f828c; font-size: .65rem; font-weight: 800; letter-spacing: .16em; }
.station-facts dd { color: #d6e1e5; font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: .76rem; }

.hero-visual { position: relative; min-width: 0; margin: 0; }
.hero-visual::before { content: ""; position: absolute; inset: 9% -7%; z-index: -1; background: rgba(41,98,120,.22); filter: blur(65px); }
.hero-visual img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; border: 1px solid var(--line-strong); border-radius: var(--radius); box-shadow: var(--shadow); }
.hero-visual figcaption { position: absolute; right: 18px; bottom: 18px; min-width: 226px; padding: 14px 16px; border: 1px solid var(--line-strong); border-radius: 9px; background: rgba(4,11,16,.88); backdrop-filter: blur(14px); }
.hero-visual figcaption span, .hero-visual figcaption small { display: block; color: var(--muted); font-size: .62rem; letter-spacing: .14em; }
.hero-visual figcaption i { display: inline-block; width: 6px; height: 6px; margin-right: 7px; border-radius: 50%; background: var(--amber); }
.hero-visual figcaption strong { display: block; margin: 3px 0; color: var(--cyan-soft); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 1.15rem; letter-spacing: .04em; }

.section-intro { display: grid; grid-template-columns: .42fr 1.2fr .7fr; align-items: end; gap: 34px; margin-bottom: 42px; }
.section-intro > * { margin-bottom: 0; }
.section-intro > p:last-child { color: var(--muted); }

.mode-console { display: grid; grid-template-columns: .38fr 1fr; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(7,18,26,.86); box-shadow: var(--shadow); }
.mode-selector { display: grid; border-right: 1px solid var(--line); }
.mode-tab { display: grid; grid-template-columns: 32px 1fr; align-content: center; gap: 0 12px; min-height: 112px; padding: 18px 22px; border: 0; border-bottom: 1px solid var(--line); text-align: left; background: transparent; cursor: pointer; }
.mode-tab:last-child { border-bottom: 0; }
.mode-tab > span { grid-row: 1 / 3; color: #60747f; font-family: ui-monospace, monospace; font-size: .72rem; }
.mode-tab strong { font-size: 1.05rem; letter-spacing: .08em; }
.mode-tab small { color: var(--muted); font-size: .72rem; }
.mode-tab:hover, .mode-tab:focus-visible { background: rgba(255,255,255,.025); }
.mode-tab.active { background: linear-gradient(90deg, rgba(101,215,233,.16), rgba(101,215,233,.025)); box-shadow: inset 3px 0 var(--cyan); }
.mode-tab.active strong { color: var(--cyan-soft); }
.receiver-panel { min-width: 0; padding: clamp(24px, 4vw, 46px); background: radial-gradient(circle at 80% 10%, rgba(45,102,125,.13), transparent 24rem); }
.receiver-head { display: flex; justify-content: space-between; align-items: center; gap: 20px; }
.receiver-head > div { display: flex; align-items: baseline; gap: 9px; }
.receiver-head small { color: #6e828c; font-size: .68rem; letter-spacing: .14em; }
.receiver-head strong { color: var(--cyan-soft); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: clamp(1.6rem, 4vw, 3.1rem); font-weight: 500; letter-spacing: .04em; }
.receiver-head span { color: var(--muted); font-size: .72rem; }
.scan-button, .sim-head button, .solar-head button { min-height: 40px; padding: 0 13px; border: 1px solid var(--line-strong); border-radius: 6px; background: rgba(255,255,255,.025); cursor: pointer; font-size: .7rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.scan-button i { display: inline-block; width: 6px; height: 6px; margin-right: 7px; border-radius: 50%; background: #65757c; }
.scan-button[aria-pressed="true"] i { background: var(--green); box-shadow: 0 0 9px var(--green); }
.scope-wrap { position: relative; height: 260px; margin: 24px 0 18px; overflow: hidden; border: 1px solid rgba(101,215,233,.18); border-radius: 10px; background: #03090d; }
.scope-wrap::before { content: ""; position: absolute; inset: 0; pointer-events: none; background-image: linear-gradient(rgba(101,215,233,.075) 1px, transparent 1px), linear-gradient(90deg, rgba(101,215,233,.075) 1px, transparent 1px); background-size: 40px 40px; }
#mode-scope { width: 100%; height: 100%; }
.scope-scale { position: absolute; left: 12px; right: 12px; bottom: 7px; display: flex; justify-content: space-between; color: #51656e; font-family: ui-monospace, monospace; font-size: .6rem; }
.mode-readout { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.mode-readout div { padding: 14px 16px; border-right: 1px solid var(--line); }
.mode-readout div:last-child { border-right: 0; }
.mode-readout small, .mode-readout strong { display: block; }
.mode-readout small { color: #6f828c; font-size: .6rem; letter-spacing: .14em; }
.mode-readout strong { margin-top: 4px; font-size: .82rem; }
#mode-description { margin: 18px 0 0; color: var(--muted); }

.satellite-section { display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: clamp(36px, 7vw, 84px); }
.satellite-photo { position: relative; }
.satellite-photo img { width: 100%; min-height: 560px; object-fit: cover; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.photo-label, .antenna-image-wrap > span { position: absolute; left: 16px; bottom: 16px; padding: 8px 10px; border: 1px solid var(--line-strong); border-radius: 5px; color: #d8e4e8; background: rgba(4,11,16,.82); font-size: .64rem; font-weight: 800; letter-spacing: .13em; }
.satellite-copy > p:not(.eyebrow) { color: var(--muted); font-size: 1.12rem; }
.pass-simulator { margin-top: 34px; padding: 20px; border: 1px solid var(--line); border-radius: 12px; background: rgba(5,13,19,.72); }
.sim-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; font-size: .68rem; letter-spacing: .1em; }
.orbit-track { position: relative; height: 130px; margin: 18px 0 5px; overflow: hidden; }
.horizon { position: absolute; left: 0; right: 0; bottom: -90px; height: 130px; border-radius: 50% 50% 0 0; border-top: 1px solid rgba(151,194,216,.32); background: radial-gradient(ellipse at 50% 0, rgba(41,95,116,.2), transparent 58%); }
.orbit-arc { position: absolute; left: 8%; right: 8%; bottom: -8px; height: 120px; border-radius: 50% 50% 0 0; border-top: 1px dashed rgba(101,215,233,.4); }
.sat-marker { --x: 28%; --y: 26%; position: absolute; left: var(--x); top: var(--y); width: 11px; height: 11px; transform: translate(-50%, -50%); border-radius: 50%; background: var(--amber); box-shadow: 0 0 0 5px rgba(240,171,90,.11), 0 0 16px rgba(240,171,90,.5); }
.pass-slider { display: grid; gap: 7px; color: #71838c; font-size: .66rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.pass-slider input { width: 100%; accent-color: var(--cyan); }
.pass-data { display: grid; grid-template-columns: repeat(4, 1fr); margin: 15px 0 8px; }
.pass-data div { padding: 8px 10px; border-left: 1px solid var(--line); }
.pass-data dt, .pass-data dd { margin: 0; }
.pass-data dt { color: #637780; font-size: .56rem; letter-spacing: .12em; }
.pass-data dd { font-family: ui-monospace, monospace; font-size: .75rem; }
.sim-note { color: #637780; font-size: .68rem; }

.antenna-lab { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(7,18,26,.84); box-shadow: var(--shadow); }
.antenna-tabs { display: grid; grid-template-columns: repeat(3, 1fr); border-bottom: 1px solid var(--line); }
.antenna-tab { min-height: 64px; padding: 12px 18px; border: 0; border-right: 1px solid var(--line); color: #82949d; background: transparent; cursor: pointer; font-size: .72rem; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; }
.antenna-tab:last-child { border-right: 0; }
.antenna-tab:hover, .antenna-tab:focus-visible { color: var(--text); }
.antenna-tab.active { color: #061017; background: var(--cyan-soft); }
.antenna-stage { display: grid; grid-template-columns: 1.35fr .65fr; min-height: 540px; }
.antenna-image-wrap { position: relative; min-width: 0; overflow: hidden; background: #071018; }
.antenna-image-wrap img { width: 100%; height: 100%; min-height: 540px; object-fit: cover; transition: opacity .2s ease, transform .35s ease; }
.antenna-copy { display: flex; flex-direction: column; justify-content: center; padding: clamp(28px, 4vw, 48px); border-left: 1px solid var(--line); }
.antenna-code { margin-bottom: 12px; color: var(--cyan); font-family: ui-monospace, monospace; font-size: .68rem; letter-spacing: .16em; }
.antenna-copy > p:not(.antenna-code), .field-panel > p:not(.antenna-code) { color: var(--muted); }
.antenna-metrics { margin: 26px 0 0; }
.antenna-metrics div { display: flex; justify-content: space-between; gap: 18px; padding: 12px 0; border-top: 1px solid var(--line); }
.antenna-metrics dt, .antenna-metrics dd { margin: 0; }
.antenna-metrics dt { color: #71838c; font-size: .62rem; font-weight: 800; letter-spacing: .12em; }
.antenna-metrics dd { color: #d5dfe3; font-size: .74rem; text-align: right; }

.maxwell-section { display: grid; grid-template-columns: 1fr .82fr; align-items: center; gap: clamp(36px, 7vw, 84px); }
.maxwell-copy > p:not(.eyebrow) { color: var(--muted); }
.equation-tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 30px; }
.equation-tab { min-height: 102px; display: flex; flex-direction: column; justify-content: center; align-items: flex-start; padding: 16px 18px; border: 1px solid var(--line); border-radius: 9px; background: rgba(255,255,255,.018); cursor: pointer; }
.equation-tab span { color: #dde8eb; font-family: Georgia, serif; font-size: 1.15rem; }
.equation-tab strong { margin-top: 4px; color: #8497a0; font-family: ui-monospace, monospace; font-size: .74rem; font-weight: 500; }
.equation-tab:hover, .equation-tab:focus-visible { border-color: var(--line-strong); }
.equation-tab.active { border-color: rgba(101,215,233,.45); background: rgba(101,215,233,.09); }
.equation-tab.active strong { color: var(--cyan); }
.field-panel { min-height: 470px; display: flex; flex-direction: column; justify-content: flex-end; padding: clamp(28px, 5vw, 54px); overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(160deg, #0a1923, #060d13); box-shadow: var(--shadow); }
.field-wave { position: relative; min-height: 230px; margin: -20px -20px 34px; overflow: hidden; perspective: 500px; }
.wave-axis { position: absolute; left: 5%; right: 5%; top: 50%; height: 1px; background: linear-gradient(90deg, transparent, #6f8994, transparent); }
.wave { position: absolute; left: 5%; right: 5%; top: 50%; height: 90px; margin-top: -45px; background-size: 90px 90px; opacity: .68; }
.wave.electric { background-image: radial-gradient(ellipse at center, transparent 47%, var(--cyan) 48%, transparent 50%); animation: drift 4.4s linear infinite; }
.wave.magnetic { background-image: radial-gradient(ellipse at center, transparent 47%, var(--amber) 48%, transparent 50%); transform: rotateX(68deg); animation: drift 5.2s linear reverse infinite; }

.propagation-section { padding-top: 82px; }
.solar-panel { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: #050b10; box-shadow: var(--shadow); }
.solar-head { min-height: 66px; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 12px 18px; border-bottom: 1px solid var(--line); }
.solar-head > div { display: flex; align-items: center; gap: 8px; font-size: .7rem; letter-spacing: .1em; }
.solar-head small { color: #667982; font-size: .65rem; font-weight: 400; letter-spacing: 0; }
.solar-panel > a { display: grid; place-items: center; min-height: 220px; padding: 24px; background: radial-gradient(circle, rgba(46,101,123,.08), transparent 70%); }
.solar-panel img { width: min(100%, 1000px); height: auto; }
.solar-note { margin: 0; padding: 12px 18px; border-top: 1px solid var(--line); color: #70828b; font-size: .72rem; text-align: center; }

.math-section { padding-top: 70px; padding-bottom: 130px; }
.math-card { position: relative; overflow: hidden; min-height: 420px; display: grid; place-items: center; padding: 58px; border: 1px solid rgba(101,215,233,.28); border-radius: var(--radius); background: linear-gradient(135deg, rgba(12,31,42,.96), rgba(8,15,25,.98)); box-shadow: var(--shadow); }
.math-grid { position: absolute; inset: 0; opacity: .35; background-image: linear-gradient(rgba(101,215,233,.06) 1px, transparent 1px), linear-gradient(90deg, rgba(101,215,233,.06) 1px, transparent 1px); background-size: 42px 42px; mask-image: radial-gradient(circle, black, transparent 72%); }
.math-copy { position: relative; z-index: 2; max-width: 740px; text-align: center; }
.math-copy p:not(.eyebrow) { max-width: 610px; margin: 0 auto 28px; color: #afbec5; font-size: 1.05rem; }
.math-symbols span { position: absolute; color: rgba(173,231,240,.09); font-family: Georgia, serif; font-size: clamp(4rem, 10vw, 8rem); }
.math-symbols span:nth-child(1) { left: 7%; top: 7%; transform: rotate(-9deg); }
.math-symbols span:nth-child(2) { right: 10%; top: 8%; }
.math-symbols span:nth-child(3) { left: 14%; bottom: -6%; }
.math-symbols span:nth-child(4) { right: 6%; bottom: 4%; font-size: clamp(3rem, 7vw, 5.5rem); }

.site-footer { min-height: 118px; display: flex; align-items: center; justify-content: space-between; gap: 30px; border-top: 1px solid var(--line); color: #687b84; font-size: .7rem; letter-spacing: .08em; text-transform: uppercase; }
.site-footer strong, .site-footer span { display: block; }
.site-footer strong { margin-bottom: 4px; color: var(--text); }
.footer-meta { display: flex; align-items: center; gap: 26px; text-align: right; }
.footer-meta a { color: var(--cyan); text-decoration: none; }

.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.65,.2,1); }
.js .reveal.visible { opacity: 1; transform: translateY(0); }

@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .42; } }
@keyframes drift { to { background-position-x: 90px; } }

@media (max-width: 1050px) {
  .site-nav { gap: 15px; }
  .hero { grid-template-columns: 1fr; padding-top: 140px; }
  .hero-copy { max-width: 760px; }
  .hero-visual { max-width: 920px; }
  .section-intro { grid-template-columns: 1fr; gap: 12px; }
  .mode-console { grid-template-columns: 1fr; }
  .mode-selector { grid-template-columns: repeat(4, 1fr); border-right: 0; border-bottom: 1px solid var(--line); }
  .mode-tab { grid-template-columns: 1fr; gap: 3px; min-height: 102px; border-bottom: 0; border-right: 1px solid var(--line); }
  .mode-tab > span { grid-row: auto; }
  .mode-tab.active { box-shadow: inset 0 3px var(--cyan); }
  .satellite-section, .maxwell-section { grid-template-columns: 1fr; }
  .satellite-photo img { min-height: 460px; }
  .antenna-stage { grid-template-columns: 1.15fr .85fr; }
}

@media (max-width: 760px) {
  html { scroll-padding-top: 90px; }
  main section[id] { scroll-margin-top: 90px; }
  .section-shell { width: min(calc(100% - 26px), var(--max)); }
  .site-header { min-height: 62px; padding-inline: 14px; }
  .menu-toggle { display: block; }
  .site-nav { position: absolute; top: calc(100% + 8px); left: 0; right: 0; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 8px; border: 1px solid var(--line); border-radius: 10px; background: rgba(4,11,16,.97); box-shadow: var(--shadow); }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 12px; }
  .brand small { display: none; }
  .hero { min-height: auto; padding-top: 122px; padding-bottom: 72px; }
  h1 { font-size: clamp(3.5rem, 18vw, 5.7rem); }
  .hero-visual figcaption { right: 10px; bottom: 10px; min-width: 200px; }
  .section { padding-block: 78px; }
  .mode-selector { grid-template-columns: 1fr 1fr; }
  .mode-tab { min-height: 90px; }
  .receiver-panel { padding: 20px 14px; }
  .receiver-head { align-items: flex-start; flex-direction: column; }
  .scope-wrap { height: 210px; }
  .mode-readout { grid-template-columns: 1fr; }
  .mode-readout div { border-right: 0; border-bottom: 1px solid var(--line); }
  .mode-readout div:last-child { border-bottom: 0; }
  .satellite-photo img { min-height: 330px; }
  .pass-data { grid-template-columns: 1fr 1fr; }
  .antenna-tabs { grid-template-columns: 1fr; }
  .antenna-tab { border-right: 0; border-bottom: 1px solid var(--line); }
  .antenna-stage { grid-template-columns: 1fr; }
  .antenna-image-wrap img { min-height: 330px; }
  .antenna-copy { border-left: 0; border-top: 1px solid var(--line); }
  .equation-tabs { grid-template-columns: 1fr; }
  .field-panel { min-height: 410px; }
  .solar-head { align-items: flex-start; }
  .solar-head > div { align-items: flex-start; flex-direction: column; }
  .solar-head .status-light { display: none; }
  .math-card { min-height: 470px; padding: 38px 20px; }
  .site-footer { align-items: flex-start; flex-direction: column; padding-block: 30px; }
  .footer-meta { align-items: flex-start; flex-direction: column; gap: 10px; text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .js .reveal { opacity: 1; transform: none; }
}