:root {
  --ink: #020812;
  --ink-2: #041020;
  --navy: #020812;
  --panel: #04111f;
  --blue: #53a9ff;
  --cyan: #20bfff;
  --cyan-2: #8fdcff;
  --amber: #ffae35;
  --green: #39ff14;
  --red: #e52342;
  --paper: #041020;
  --mist: #06131f;
  --muted: #a9cce9;
  --white: #ffffff;
  --line: #315f8d;
  --max: 1220px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 78px; }
body {
  margin: 0;
  color: var(--white);
  background: #020812;
  font-family: "Segoe UI", Arial, sans-serif;
  letter-spacing: 0;
  line-height: 1.55;
  overflow-x: hidden;
}

main { background: #020812; }
body, button, a, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
img { display: block; max-width: 100%; }
a { color: inherit; }
button { letter-spacing: 0; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { line-height: 1.08; letter-spacing: 0; }
h2 { font-size: 44px; margin-bottom: 18px; }
h3 { font-size: 21px; }

.skip-link {
  position: fixed;
  left: 16px;
  top: -80px;
  z-index: 1000;
  padding: 10px 16px;
  background: var(--cyan);
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
}
.skip-link:focus { top: 12px; }

.section-inner { width: min(var(--max), calc(100% - 48px)); margin: 0 auto; }
.section-heading { max-width: 780px; margin-bottom: 46px; }
.section-heading > p:last-child { font-size: 18px; color: var(--muted); }
.section-heading.on-dark h2 { color: var(--white); }
.section-heading.on-dark > p:last-child { color: #b7c9d7; }
.section-kicker, .eyebrow {
  margin-bottom: 12px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}
.on-dark .section-kicker, .ai-copy .section-kicker, .study-copy .section-kicker { color: var(--cyan); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 72px;
  color: var(--white);
  background: rgba(4, 14, 23, 0.96);
  border-bottom: 1px solid rgba(116, 231, 255, 0.22);
  backdrop-filter: blur(14px);
}
.nav-wrap {
  width: min(var(--max), calc(100% - 40px));
  height: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}
.brand { display: flex; align-items: center; gap: 11px; color: var(--white); text-decoration: none; min-width: 250px; }
.brand img { width: 38px; height: 38px; object-fit: contain; }
.brand span { display: grid; }
.brand strong { font-size: 14px; line-height: 1.15; }
.brand small { color: var(--cyan-2); font-size: 10px; font-weight: 700; }
.primary-nav { display: flex; align-items: center; gap: 28px; }
.primary-nav a { color: #dce9f2; font-size: 14px; font-weight: 650; text-decoration: none; }
.primary-nav a:hover, .primary-nav a:focus-visible { color: var(--cyan-2); }
.primary-nav .nav-cta { padding: 9px 15px; color: var(--ink); background: var(--cyan); border: 1px solid var(--cyan); border-radius: 5px; }
.primary-nav .nav-cta:hover, .primary-nav .nav-cta:focus-visible { color: #020812; background: #20bfff; border-color: #8fdcff; }
.nav-toggle { display: none; width: 42px; height: 42px; padding: 10px; background: transparent; border: 1px solid #2d536e; border-radius: 5px; }
.nav-toggle span { display: block; height: 2px; margin: 5px 0; background: var(--white); }
.scroll-progress { position: absolute; left: 0; bottom: -1px; width: 100%; height: 2px; background: transparent; }
.scroll-progress span { display: block; width: 0; height: 100%; background: var(--cyan); }

.hero {
  position: relative;
  height: min(780px, calc(100svh - 92px));
  min-height: 560px;
  overflow: hidden;
  color: var(--white);
  background: var(--navy);
}
.hero-image { position: absolute; inset: 0; width: 100%; height: 112%; object-fit: cover; object-position: center; transform: translateY(-4%); will-change: transform; }
.hero-shade { position: absolute; inset: 0; background: rgba(2, 10, 17, 0.48); }
.hero-content {
  position: relative;
  z-index: 2;
  width: min(var(--max), calc(100% - 48px));
  height: 100%;
  margin: 0 auto;
  padding: 72px 0 42px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
}
.hero .eyebrow { color: var(--cyan-2); opacity: 0; animation: hero-in 0.65s 0.1s ease forwards; }
.hero h1 { max-width: 790px; margin-bottom: 20px; font-size: 68px; text-wrap: balance; opacity: 0; animation: hero-in 0.7s 0.2s ease forwards; }
.hero-copy { max-width: 690px; margin-bottom: 28px; color: #e5f1f7; font-size: 21px; opacity: 0; animation: hero-in 0.7s 0.3s ease forwards; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 42px; opacity: 0; animation: hero-in 0.7s 0.4s ease forwards; }
.button { display: inline-flex; min-height: 46px; padding: 11px 19px; align-items: center; justify-content: center; border: 1px solid transparent; border-radius: 5px; font-weight: 800; text-decoration: none; transition: transform 180ms ease, background 180ms ease, border-color 180ms ease; }
.button:hover, .button:focus-visible { transform: translateY(-2px); }
.button-primary { color: var(--ink); background: var(--cyan); border-color: var(--cyan); }
.button-primary:hover, .button-primary:focus-visible { background: #20bfff; border-color: #8fdcff; }
.button-secondary { color: var(--white); background: rgba(4, 19, 30, 0.72); border-color: #8bdff4; }
.button-secondary:hover, .button-secondary:focus-visible { background: var(--ink); border-color: var(--white); }
.button-dark { color: var(--white); background: var(--ink); border-color: var(--ink); }
.button-dark:hover, .button-dark:focus-visible { color: #020812; background: #20bfff; border-color: #8fdcff; }
.hero-proof { display: grid; grid-template-columns: repeat(4, minmax(115px, 1fr)); gap: 1px; width: min(690px, 100%); background: rgba(116, 231, 255, 0.35); border: 1px solid rgba(116, 231, 255, 0.35); opacity: 0; animation: hero-in 0.7s 0.5s ease forwards; }
.hero-proof div { min-height: 82px; padding: 12px 14px; background: rgba(4, 18, 29, 0.84); }
.hero-proof strong { display: block; color: var(--white); font-size: 30px; line-height: 1; }
.hero-proof span { display: block; margin-top: 7px; color: #bdd3e0; font-size: 12px; }
.platform-note { margin: 13px 0 0; color: #b7cad6; font-size: 12px; opacity: 0; animation: hero-in 0.7s 0.6s ease forwards; }
.hero-signal { position: absolute; right: 7%; top: 15%; z-index: 2; width: 120px; height: 120px; pointer-events: none; }
.hero-signal span { position: absolute; left: 50%; top: 50%; width: 22px; height: 22px; border: 1px solid rgba(116, 231, 255, 0.8); border-radius: 50%; transform: translate(-50%, -50%) scale(0.2); opacity: 0; animation: signal-out 3.2s infinite; }
.hero-signal span:nth-child(2) { animation-delay: 1.05s; }
.hero-signal span:nth-child(3) { animation-delay: 2.1s; }

.promise-band { padding: 74px 0; color: var(--white); background: #0b2436; border-bottom: 1px solid #31546b; }
.promise-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 80px; align-items: center; }
.promise-grid h2 { margin-bottom: 0; }
.promise-grid > p { margin: 0; color: #bed3df; font-size: 19px; }

.experience-section { padding: 100px 0 110px; color: var(--white); background: var(--navy); }
.tour-tabs { display: flex; width: fit-content; max-width: 100%; margin-bottom: 18px; padding: 4px; gap: 4px; overflow-x: auto; background: #0a2438; border: 1px solid #2a536e; border-radius: 6px; }
.tour-tab { min-width: 132px; min-height: 42px; padding: 9px 15px; color: #bdd3df; background: transparent; border: 0; border-radius: 4px; font-weight: 750; cursor: pointer; white-space: nowrap; }
.tour-tab:hover, .tour-tab:focus-visible { color: var(--white); background: #123752; }
.tour-tab.active { color: var(--ink); background: var(--cyan); }
.app-window { overflow: hidden; background: #020b14; border: 1px solid #376784; border-radius: 7px; box-shadow: 0 30px 70px rgba(0, 0, 0, 0.34); }
.app-titlebar { height: 38px; padding: 0 12px; display: flex; align-items: center; gap: 8px; color: #edf7fb; background: #151b17; font-size: 12px; }
.app-titlebar img { width: 22px; height: 22px; }
.window-controls { margin-left: auto; display: flex; gap: 12px; align-items: center; }
.window-controls i { display: block; width: 10px; height: 10px; border: 1px solid #cbd8df; }
.window-controls i:first-child { height: 1px; border: 0; background: #cbd8df; }
.window-controls i:last-child { position: relative; border: 0; }
.window-controls i:last-child::before, .window-controls i:last-child::after { content: ""; position: absolute; top: 4px; left: 0; width: 11px; height: 1px; background: #cbd8df; transform: rotate(45deg); }
.window-controls i:last-child::after { transform: rotate(-45deg); }
.app-banner { width: 100%; aspect-ratio: 1536 / 211; object-fit: cover; }
.app-workspace { min-height: 590px; padding: 10px 12px 14px; display: grid; grid-template-columns: 210px 1fr; gap: 14px; background: #020b14; }
.app-side-rail { width: 210px; align-self: start; border-radius: 7px; }
.tour-panel { min-width: 0; padding: 18px; background: #04121f; border: 1px solid #2c5774; border-radius: 7px; }
.tour-panel[hidden] { display: none; }
.mock-status { display: flex; justify-content: space-between; gap: 20px; margin-bottom: 16px; color: #45aaff; font-size: 18px; }
.question-layout { display: grid; grid-template-columns: 1fr 320px; gap: 20px; min-height: 360px; padding: 18px; background: #020e19; border: 1px solid #274e6b; border-radius: 6px; }
.question-layout.text-only { grid-template-columns: 1fr; }
.question-label { color: #47afff; font-weight: 800; }
.question-layout h3 { color: var(--white); font-size: 18px; }
.answer-list { display: grid; gap: 7px; margin-top: 22px; }
.answer-list span { min-height: 41px; padding: 9px 12px; display: flex; align-items: center; gap: 10px; color: #f1f7fb; background: #061827; border: 1px solid #2f6388; border-radius: 5px; font-size: 14px; }
.answer-list span i { width: 17px; height: 17px; flex: 0 0 17px; border: 1px solid #63caff; border-radius: 50%; }
.answer-list span.selected { border-color: var(--cyan); background: #0b3450; }
.answer-list span.selected i { border: 5px solid var(--cyan); }
.diagram-preview { padding: 10px; align-self: start; color: #a9cfe0; background: #061827; border: 1px solid #315d7a; border-radius: 6px; cursor: zoom-in; }
.diagram-preview img { width: 100%; aspect-ratio: 16 / 10; object-fit: contain; background: var(--white); }
.diagram-preview span { display: block; padding-top: 8px; font-size: 12px; }
.mock-ai-row { min-height: 43px; margin: 12px 0; padding: 7px 10px; display: grid; grid-template-columns: auto 1fr auto; gap: 12px; align-items: center; color: #a9cfe0; background: #03111e; border: 1px solid #274e6b; border-radius: 5px; font-size: 12px; }
.mock-ai-row span, .mock-ai-row b { color: #dff7ff; }
.mock-ai-row p { margin: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mock-actions { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.mock-actions button { min-height: 38px; color: var(--white); background: #0968ce; border: 1px solid #36a6ff; border-radius: 5px; font-weight: 800; }
.mock-actions button:nth-child(2) { background: #b9002d; border-color: #ff315d; }
.mock-actions button:nth-child(3) { background: #069665; border-color: #23e4a0; }
.mock-actions button:nth-child(4) { background: #c16a00; border-color: #ffad3b; }
.mock-progress { height: 9px; margin-top: 14px; overflow: hidden; background: #061827; border: 1px solid #2d668d; }
.mock-progress span { display: block; height: 100%; background: #39ff77; animation: progress-grow 1.5s ease both; }
.panel-title-row { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 16px; }
.panel-title-row small, .study-preview small { color: var(--cyan); font-weight: 800; }
.panel-title-row h3 { margin: 4px 0 0; color: var(--white); font-size: 25px; }
.online-dot { padding: 7px 10px; color: #dff7ff; background: #0a3850; border: 1px solid #35a5d2; border-radius: 4px; font-size: 12px; }
.online-dot.green { color: #dfffee; background: #0a3d2b; border-color: #20c77d; }
.chat-history { min-height: 365px; padding: 16px; display: grid; align-content: start; gap: 12px; background: #020e19; border: 1px solid #28516d; border-radius: 6px; }
.chat-history article { max-width: 78%; padding: 12px 14px; color: #d8e7ef; background: #0b293e; border-left: 3px solid #4aaaff; border-radius: 4px; }
.chat-history article.tutor-message { margin-left: auto; background: #123225; border-left-color: #36df90; }
.chat-history strong { color: var(--white); font-size: 12px; }
.chat-history p { margin: 5px 0 0; }
.provider-strip { display: flex; gap: 8px; margin: 12px 0; overflow-x: auto; }
.provider-strip span { padding: 7px 10px; color: #bfeaff; background: #08253a; border: 1px solid #2f6688; border-radius: 4px; font-size: 12px; white-space: nowrap; }
.chat-compose { display: grid; grid-template-columns: 1fr 90px; gap: 8px; }
.chat-compose span { min-height: 42px; padding: 10px 12px; color: #6f8ea2; background: #020e19; border: 1px solid #2c5f82; border-radius: 5px; }
.chat-compose button { color: var(--ink); background: var(--cyan); border: 0; border-radius: 5px; font-weight: 800; }
.panel-note { margin: 10px 0 0; color: #8facbc; font-size: 12px; }
.progress-dashboard { display: grid; grid-template-columns: 1.6fr 0.8fr; gap: 16px; }
.chart-area { min-height: 395px; padding: 18px 18px 12px 48px; position: relative; background: #020e19; border: 1px solid #28516d; border-radius: 6px; }
.chart-scale { position: absolute; left: 12px; top: 22px; bottom: 50px; display: flex; flex-direction: column; justify-content: space-between; color: #6f90a4; font-size: 11px; }
.bar-chart { height: 315px; display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; align-items: end; border-bottom: 1px solid #47718c; background: repeating-linear-gradient(to top, transparent 0, transparent 78px, rgba(80, 125, 154, 0.24) 79px); }
.bar-chart i { position: relative; height: var(--score); min-height: 12px; background: #168bd1; border: 1px solid #5fc9ff; transform-origin: bottom; animation: bar-rise 0.8s ease both; }
.bar-chart i.pass { background: #18a66a; border-color: #39e7a0; }
.bar-chart b { position: absolute; top: -24px; left: 50%; color: var(--white); font-style: normal; transform: translateX(-50%); }
.chart-area > p { margin: 12px 0 0; color: #8facbc; font-size: 12px; text-align: center; }
.readiness-gauge { padding: 26px 20px; display: grid; align-content: center; text-align: center; background: #0b2538; border-left: 4px solid var(--green); }
.readiness-gauge > div { width: 170px; height: 170px; margin: 0 auto 20px; display: grid; place-content: center; border: 14px solid #1c5368; border-top-color: #39e7a0; border-right-color: #39e7a0; border-radius: 50%; }
.readiness-gauge strong { display: block; color: var(--white); font-size: 42px; }
.readiness-gauge span { color: #9ec5d5; font-size: 12px; }
.readiness-gauge p { color: #c5d9e3; }
.progress-metrics { margin-top: 14px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: #2a516a; border: 1px solid #2a516a; }
.progress-metrics span { padding: 13px; color: #9dbacc; background: #061827; font-size: 12px; text-align: center; }
.progress-metrics b { display: block; color: var(--white); font-size: 20px; }
.study-preview { min-height: 520px; display: grid; grid-template-columns: 255px 1fr; gap: 28px; align-items: center; }
.study-preview > img { width: 255px; max-height: 480px; object-fit: cover; border: 1px solid #4a7188; box-shadow: 0 22px 40px rgba(0,0,0,0.35); }
.study-preview h3 { margin: 8px 0 16px; color: var(--white); font-size: 31px; }
.study-preview p, .study-preview li { color: #bdd0db; }
.study-preview ul { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 24px; padding-left: 19px; }
.study-controls { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.study-controls button, .study-controls span { min-height: 36px; padding: 8px 12px; color: #dff7ff; background: #08253a; border: 1px solid #356b8b; border-radius: 4px; }
.tour-caption { margin: 12px 0 0; color: #728e9f; font-size: 12px; text-align: right; }

.readiness-section { padding: 100px 0; color: var(--white); background: #081b2a; }
.readiness-path { margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); list-style: none; border-top: 2px solid var(--cyan); }
.readiness-path li { min-height: 245px; padding: 24px 22px 20px; border-right: 1px solid #31546b; }
.readiness-path li:last-child { border-right: 0; }
.readiness-path li > b { color: var(--cyan); font-size: 14px; }
.readiness-path h3 { margin: 46px 0 10px; }
.readiness-path p { color: #b8ccd8; font-size: 15px; }

.privileges-section { padding: 110px 0; color: var(--white); background: #071522; }
.local-band-summary { margin: 38px 0 30px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.local-band-summary article { min-height: 168px; padding: 19px; display: grid; align-content: start; background: #0d2536; border: 1px solid #31566d; border-top: 5px solid var(--local-band); border-radius: 6px; }
.local-band-summary span { width: fit-content; padding: 3px 7px; color: #061523; background: var(--local-band); border-radius: 3px; font-size: 10px; font-weight: 900; }
.local-band-summary b { margin-top: 17px; color: #b9cfda; font-size: 13px; }
.local-band-summary strong { color: var(--white); font-size: 22px; }
.local-band-summary small { margin-top: 8px; color: #9eb7c6; }
.power-summary { margin-bottom: 64px; display: grid; grid-template-columns: 0.7fr 0.9fr 1.4fr; border: 1px solid #31546b; }
.power-summary > div, .power-summary > p { min-height: 105px; margin: 0; padding: 20px; display: grid; align-content: center; border-right: 1px solid #31546b; }
.power-summary > p { border-right: 0; color: #b8ccd8; background: #0d2333; font-size: 14px; }
.power-summary strong { color: var(--cyan); font-size: 23px; }
.power-summary span { color: #9eb7c6; font-size: 12px; }
.privilege-group { margin-top: 60px; }
.privilege-group-heading { margin-bottom: 20px; display: grid; grid-template-columns: 96px 1fr; gap: 20px; align-items: center; }
.privilege-group-heading h3 { margin: 0 0 5px; color: var(--white); font-size: 27px; }
.privilege-group-heading p { margin: 0; color: #9fb7c5; }
.spectrum-label { min-height: 46px; padding: 8px 12px; display: grid; place-content: center; color: var(--ink); background: var(--cyan); border-radius: 5px; font-size: 13px; font-weight: 900; text-align: center; }
.spectrum-label.hf { background: #ffbd44; }
.spectrum-label.vhf { background: #33dfa2; }
.spectrum-label.uhf { color: var(--white); background: #8166e8; }
.spectrum-label.microwave { color: var(--white); background: #e44d72; }
.privilege-table { border: 1px solid #31546b; }
.privilege-head, .privilege-row { display: grid; grid-template-columns: 100px 1.25fr 1.6fr 130px; gap: 18px; align-items: center; }
.privilege-head { min-height: 44px; padding: 8px 16px; color: #93acba; background: #0b202f; font-size: 11px; font-weight: 800; text-transform: uppercase; }
.privilege-row { min-height: 92px; padding: 14px 16px; background: #0c1c29; border-top: 1px solid #29485b; border-left: 7px solid var(--band); }
.privilege-row:nth-child(odd) { background: #102433; }
.privilege-row > div:first-child { display: grid; }
.privilege-row > div:first-child b { color: var(--white); font-size: 22px; }
.privilege-row > div:first-child small { color: var(--band); font-weight: 800; }
.privilege-row > div:nth-child(2) { min-width: 0; }
.privilege-row > div:nth-child(2) strong { display: block; color: #e9f5fb; font-size: 16px; }
.privilege-row > div:nth-child(2) > i, .split-ranges i { display: block; width: 100%; height: 5px; margin-top: 9px; background: var(--band); box-shadow: 0 0 14px color-mix(in srgb, var(--band) 55%, transparent); }
.mode-list, .split-modes { display: flex; flex-wrap: wrap; gap: 7px; }
.mode-list span, .split-modes span { padding: 6px 9px; border: 1px solid currentColor; border-radius: 4px; font-size: 11px; font-weight: 800; }
.mode-cw { color: #ffbd44; background: rgba(255, 189, 68, 0.08); }
.mode-data { color: #59d9ff; background: rgba(89, 217, 255, 0.08); }
.mode-phone { color: #65eba6; background: rgba(101, 235, 166, 0.08); }
.power-badge { padding: 8px 10px; color: var(--white); background: #15344a; border: 1px solid #3d6d89; border-radius: 4px; font-size: 12px; font-weight: 800; text-align: center; }
.split-ranges, .split-modes { display: grid !important; grid-template-columns: 1fr 1fr; gap: 8px; }
.split-ranges span { min-width: 0; }
.split-ranges strong { font-size: 13px !important; }
.chart-footnote { margin: 13px 0 0; color: #8fa8b7; font-size: 11px; }
.band-card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.band-card { min-height: 172px; padding: 17px 20px; position: relative; overflow: hidden; background: #0d2231; border: 1px solid #31566d; border-top: 5px solid var(--band-color); border-radius: 7px; }
.band-card::after { content: ""; position: absolute; right: -35px; bottom: -35px; width: 115px; height: 115px; border: 1px solid color-mix(in srgb, var(--band-color) 45%, transparent); border-radius: 50%; }
.band-card > div { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.band-card span { color: var(--band-color); font-size: 25px; font-weight: 900; }
.band-card b { color: var(--white); font-size: 14px; }
.band-card p { margin: 24px 0 10px; color: #c1d3dd; font-size: 14px; }
.band-card small { color: #8fa9b8; }
.band-card.six { --band-color:#32d996; }
.band-card.two { --band-color:#24c9f2; }
.band-card.one { --band-color:#6c91ff; }
.band-card.seventy { --band-color:#8a70ee; }
.band-card.thirtythree { --band-color:#e65a8b; }
.band-card.twentythree { --band-color:#f4a63b; }
.microwave-access { margin-top: 60px; padding: 28px; display: grid; grid-template-columns: 0.75fr 1.25fr; gap: 36px; background: #0c2130; border: 1px solid #31566d; border-left: 6px solid #e44d72; }
.microwave-access h3 { margin: 14px 0 8px; color: var(--white); font-size: 27px; }
.microwave-access p { margin: 0; color: #9eb6c4; }
.frequency-chip-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.frequency-chip-grid span { min-height: 45px; padding: 9px; display: grid; place-content: center; color: #effaff; background: #142f42; border: 1px solid #3c6882; border-radius: 4px; font-size: 12px; font-weight: 750; text-align: center; }
.frequency-chip-grid span:nth-child(3n+1) { border-color: #4bbbe8; }
.frequency-chip-grid span:nth-child(3n+2) { border-color: #5bce9a; }
.frequency-chip-grid span:nth-child(3n+3) { border-color: #db678f; }
.chart-source { margin-top: 25px; padding-top: 20px; display: flex; justify-content: space-between; gap: 30px; align-items: center; border-top: 1px solid #31566d; }
.chart-source p { margin: 0; color: #8fa8b7; font-size: 11px; }
.chart-source div { display: flex; flex-wrap: wrap; gap: 8px; }
.chart-source a { padding: 6px 9px; color: var(--cyan-2); border: 1px solid #3f6b84; border-radius: 4px; font-size: 11px; font-weight: 750; text-decoration: none; }
.chart-source a:hover, .chart-source a:focus-visible { color: var(--ink); background: var(--cyan); border-color: var(--cyan); }

.features-section { padding: 100px 0; color: var(--white); background: #0b2436; border-top: 1px solid #31546b; }
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.feature-card { min-height: 244px; padding: 22px; background: #0d1f2e; border: 1px solid #31546b; border-top: 4px solid var(--cyan); border-radius: 7px; transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease; }
.feature-card:hover { transform: translateY(-4px); border-color: #77b9df; box-shadow: 0 16px 35px rgba(17, 47, 68, 0.12); }
.feature-card span { color: var(--cyan); font-size: 13px; font-weight: 850; }
.feature-card h3 { margin: 34px 0 10px; font-size: 20px; }
.feature-card p { margin: 0; color: #b8ccd8; font-size: 14px; }
.feature-card:nth-child(4n+2) { border-top-color: var(--amber); }
.feature-card:nth-child(4n+3) { border-top-color: var(--green); }
.feature-card:nth-child(4n+4) { border-top-color: var(--red); }

.ai-section { padding: 110px 0; color: var(--white); background: #111b24; }
.ai-layout { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 80px; align-items: center; }
.ai-copy h2 { color: var(--white); }
.ai-copy > p { color: #c2d2dc; font-size: 18px; }
.check-list { margin: 26px 0 0; padding: 0; display: grid; gap: 11px; list-style: none; }
.check-list li { position: relative; padding-left: 28px; color: inherit; }
.check-list li::before { content: ""; position: absolute; left: 0; top: 8px; width: 12px; height: 7px; border-left: 2px solid var(--green); border-bottom: 2px solid var(--green); transform: rotate(-45deg); }
.provider-visual { position: relative; min-height: 500px; }
.provider-core { position: absolute; left: 50%; top: 50%; z-index: 3; width: 150px; height: 150px; display: grid; place-content: center; justify-items: center; color: var(--white); background: #082b42; border: 2px solid var(--cyan); border-radius: 50%; transform: translate(-50%, -50%); box-shadow: 0 0 35px rgba(38, 201, 243, 0.23); }
.provider-core img { width: 58px; height: 58px; object-fit: contain; }
.provider-core strong { margin-top: 5px; }
.provider-core span { color: #9ec9db; font-size: 11px; }
.provider-node { position: absolute; z-index: 3; width: 150px; min-height: 70px; padding: 13px; display: grid; align-content: center; color: #eaf6ff; background: #06101c; border: 1px solid #315f8d; border-left: 4px solid var(--blue); box-shadow: 0 10px 28px rgba(0, 0, 0, 0.3); }
.provider-node span { color: #8fc8ff; font-size: 12px; }
.provider-node.ollama { left: 0; top: 37%; border-left-color: var(--green); }
.provider-node.openai { right: 0; top: 17%; }
.provider-node.gemini { right: 0; bottom: 17%; border-left-color: var(--amber); }
.provider-node.claude { left: 0; bottom: 10%; border-left-color: var(--red); }
.provider-orbit { position: absolute; left: 50%; top: 50%; border: 1px solid rgba(116, 231, 255, 0.35); border-radius: 50%; transform: translate(-50%, -50%); }
.provider-orbit.one { width: 330px; height: 330px; animation: orbit-spin 20s linear infinite; }
.provider-orbit.two { width: 460px; height: 460px; border-style: dashed; animation: orbit-spin 32s linear infinite reverse; }
.provider-orbit::before { content: ""; position: absolute; width: 8px; height: 8px; left: 50%; top: -4px; background: var(--cyan); border-radius: 50%; }

.progress-section { padding: 110px 0; color: var(--white); background: #071522; }
.progress-layout { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 90px; align-items: center; }
.readiness-visual { min-height: 430px; position: relative; padding: 36px; background: #071a28; border-left: 7px solid var(--green); }
.readiness-dial { width: 190px; height: 190px; display: grid; place-content: center; justify-items: center; color: var(--white); border: 16px solid #17485d; border-top-color: var(--green); border-right-color: var(--green); border-radius: 50%; }
.readiness-dial strong { font-size: 50px; line-height: 1; }
.readiness-dial span { color: #9bc1d2; }
.score-bars { position: absolute; right: 34px; bottom: 55px; width: calc(100% - 280px); height: 270px; display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; align-items: end; border-bottom: 1px solid #618095; }
.score-bars i { height: var(--bar); background: #168ed2; border-top: 2px solid var(--cyan); transform-origin: bottom; }
.readiness-visual.is-visible .score-bars i { animation: bar-rise 0.85s ease both; }
.score-bars i:nth-child(n+4) { background: var(--green); border-top-color: #84ffc0; }
.pass-line { position: absolute; left: 270px; right: 34px; bottom: 55px; height: 70%; border-top: 1px dashed var(--amber); pointer-events: none; }
.pass-line span { position: absolute; right: 0; top: -25px; color: var(--amber); font-size: 11px; }
.progress-copy h2 { font-size: 42px; }
.progress-copy > p { color: #b8ccd8; font-size: 18px; }
.accuracy-note { padding: 15px 17px; color: #d4e5ed !important; background: #10293a; border-left: 4px solid var(--amber); font-size: 14px !important; }

.study-section { padding: 110px 0; color: var(--white); background: #0b2434; }
.study-layout { display: grid; grid-template-columns: 0.75fr 1.25fr; gap: 90px; align-items: center; }
.cover-stage { max-width: 420px; padding: 18px; background: #06101c; border: 1px solid #315f8d; transform: rotate(-1deg); box-shadow: 0 35px 55px rgba(0, 0, 0, 0.42); }
.cover-stage img { width: 100%; }
.study-copy h2 { color: var(--white); }
.study-copy > p { color: #c8d9e2; font-size: 18px; }
.study-facts { margin: 30px 0; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid #416579; border-bottom: 1px solid #416579; }
.study-facts div { padding: 18px; border-right: 1px solid #416579; }
.study-facts div:last-child { border-right: 0; }
.study-facts b { display: block; color: var(--cyan); font-size: 34px; }
.study-facts span { color: #a9c1ce; font-size: 12px; }

.resources-section { padding: 100px 0; color: var(--white); background: #0b2436; }
.resources-visual { overflow: hidden; border: 1px solid #6590a8; border-radius: 7px; }
.resources-visual img { width: 100%; aspect-ratio: 3 / 1; object-fit: cover; }
.resources-content { margin-top: 36px; display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: end; }
.resources-content h2 { margin-bottom: 0; }
.resources-content > p { margin: 0; color: #bed3df; font-size: 18px; }
.resource-categories { margin-top: 34px; display: grid; grid-template-columns: repeat(5, 1fr); border: 1px solid #31546b; }
.resource-categories span { min-height: 74px; padding: 14px; display: grid; place-content: center; color: #e8f8ff; background: #0d1f2e; border-right: 1px solid #31546b; font-size: 13px; font-weight: 750; text-align: center; }
.resource-categories span:last-child { border-right: 0; }
.external-note { margin: 14px 0 0; color: #9eb7c6; font-size: 12px; }

.privacy-section { padding: 100px 0; color: var(--white); background: #081b2a; }
.privacy-grid { display: grid; grid-template-columns: 0.72fr 1.28fr; gap: 90px; }
.privacy-list { display: grid; grid-template-columns: 1fr 1fr; border-top: 2px solid var(--cyan); }
.privacy-list article { min-height: 170px; padding: 22px; background: #0d2536; border-right: 1px solid #31546b; border-bottom: 1px solid #31546b; }
.privacy-list article:nth-child(2n) { border-right: 0; }
.privacy-list b { display: block; margin-bottom: 12px; color: var(--cyan); font-size: 17px; }
.privacy-list p { margin: 0; color: #b8ccd8; font-size: 14px; }

/* Match the locked V1.0.41 application theme across every website section. */
.promise-band,
.features-section,
.resources-section {
  color: #d7e9ff;
  background: linear-gradient(135deg, #041020 0%, #010711 55%, #06131f 100%);
  border-color: #0a335b;
}
.readiness-section,
.progress-section,
.privacy-section {
  color: #d7e9ff;
  background: #020812;
}
.experience-section,
.privileges-section,
.ai-section,
.study-section,
.faq-section {
  color: #d7e9ff;
  background: #010711;
}
.promise-band h2,
.readiness-section h2,
.readiness-section h3,
.features-section h2,
.features-section h3,
.progress-section h2,
.resources-section h2,
.privacy-section h2 {
  color: #f0f6ff;
}
.promise-grid > p,
.section-heading > p:last-child,
.readiness-path p,
.feature-card p,
.progress-copy > p,
.resources-content > p,
.privacy-list p {
  color: #a9cce9;
}
.section-kicker,
.eyebrow,
.readiness-path li > b,
.feature-card span,
.privacy-list b {
  color: #53a9ff;
}
.readiness-path {
  border-top-color: #20bfff;
}
.readiness-path li {
  border-color: #244f73;
}
.feature-card,
.resource-categories span,
.privacy-list article {
  color: #d7e9ff;
  background: rgba(4, 24, 43, 0.92);
  border-color: #244f73;
}
.feature-card {
  border-top-color: #20bfff;
}
.readiness-visual,
.accuracy-note {
  background: #06101c;
  border-color: #315f8d;
}
.accuracy-note {
  color: #d8ebff !important;
  border-left-color: #ffae35;
}
.resource-categories {
  border-color: #315f8d;
}
.resource-categories span {
  color: #eaf6ff;
}

.faq-section { padding: 110px 0; color: var(--white); background: #111b24; }
.faq-layout { display: grid; grid-template-columns: 0.7fr 1.3fr; gap: 90px; }
.faq-list { border-top: 1px solid #3c5668; }
.faq-item { border-bottom: 1px solid #3c5668; }
.faq-item button { width: 100%; min-height: 70px; padding: 18px 4px; display: flex; align-items: center; justify-content: space-between; gap: 20px; color: var(--white); background: transparent; border: 0; text-align: left; cursor: pointer; font-weight: 750; }
.faq-item button i { color: var(--cyan); font-size: 28px; font-style: normal; font-weight: 300; transition: transform 180ms ease; }
.faq-item button[aria-expanded="true"] i { transform: rotate(45deg); }
.faq-item > div { display: grid; grid-template-rows: 0fr; transition: grid-template-rows 260ms ease; }
.faq-item > div p { min-height: 0; margin: 0; overflow: hidden; color: #b9ccd7; }
.faq-item.open > div { grid-template-rows: 1fr; }
.faq-item.open > div p { padding: 0 40px 22px 4px; }

.final-cta { padding: 92px 0; color: var(--ink); background: var(--cyan); text-align: center; }
.final-cta .section-inner { max-width: 850px; }
.final-cta .section-kicker { color: #084f78; }
.final-cta h2 { font-size: 52px; }
.final-cta p { font-size: 19px; }
.final-cta .button { margin-top: 10px; }

.site-footer { padding: 42px 0 24px; color: #b7c7d2; background: #040d14; }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr auto; gap: 40px; align-items: center; }
.footer-brand { display: flex; align-items: center; gap: 12px; color: var(--white); }
.footer-brand img { width: 44px; height: 44px; object-fit: contain; }
.footer-brand div { display: grid; }
.footer-brand strong { font-size: 13px; }
.footer-brand span { color: var(--cyan-2); font-size: 11px; }
.site-footer p { margin: 0; font-size: 13px; }
.site-footer a { color: var(--cyan-2); font-weight: 700; }
.legal { margin-top: 28px; padding-top: 20px; display: flex; justify-content: space-between; gap: 28px; color: #6f8492; border-top: 1px solid #223846; font-size: 11px; }
.contact-email { flex: 0 0 auto; color: #8fdcff; font-size: 13px; font-weight: 700; }

.diagram-dialog { width: min(900px, calc(100% - 32px)); padding: 44px 18px 18px; border: 1px solid #4e7e99; border-radius: 7px; background: #061523; }
.diagram-dialog::backdrop { background: rgba(0, 0, 0, 0.82); }
.diagram-dialog img { width: 100%; max-height: 78vh; object-fit: contain; background: var(--white); }
.dialog-close { position: absolute; top: 6px; right: 8px; width: 34px; height: 34px; color: var(--white); background: transparent; border: 0; font-size: 28px; cursor: pointer; }

.reveal { opacity: 0; transform: translateY(28px); transition: opacity 700ms ease, transform 700ms ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

@keyframes hero-in { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }
@keyframes signal-out { 0% { opacity: 0; transform: translate(-50%, -50%) scale(0.2); } 20% { opacity: 0.8; } 100% { opacity: 0; transform: translate(-50%, -50%) scale(5); } }
@keyframes progress-grow { from { width: 0; } }
@keyframes bar-rise { from { transform: scaleY(0); opacity: 0.25; } to { transform: scaleY(1); opacity: 1; } }
@keyframes orbit-spin { to { transform: translate(-50%, -50%) rotate(360deg); } }

@media (max-width: 1100px) {
  h2 { font-size: 38px; }
  .primary-nav { gap: 18px; }
  .hero h1 { font-size: 56px; max-width: 700px; }
  .hero-copy { font-size: 19px; max-width: 610px; }
  .feature-grid { grid-template-columns: repeat(3, 1fr); }
  .question-layout { grid-template-columns: 1fr 270px; }
  .ai-layout, .progress-layout, .study-layout { gap: 50px; }
  .provider-node { width: 132px; }
  .provider-orbit.two { width: 400px; height: 400px; }
  .provider-orbit.one { width: 290px; height: 290px; }
  .readiness-path { grid-template-columns: repeat(3, 1fr); }
  .readiness-path li:nth-child(3) { border-right: 0; }
  .readiness-path li:nth-child(n+4) { border-top: 1px solid var(--line); }
  .privilege-head, .privilege-row { grid-template-columns: 85px 1.15fr 1.45fr 105px; gap: 12px; }
  .band-card-grid { grid-template-columns: 1fr 1fr; }
  .frequency-chip-grid { grid-template-columns: 1fr 1fr; }
  .resource-categories { grid-template-columns: repeat(3, 1fr); }
  .resource-categories span:nth-child(3) { border-right: 0; }
  .resource-categories span:nth-child(n+4) { border-top: 1px solid var(--line); }
  .readiness-visual { min-height: 390px; }
  .readiness-dial { width: 155px; height: 155px; border-width: 13px; }
  .score-bars { width: calc(100% - 235px); }
  .pass-line { left: 225px; }
}

@media (max-width: 860px) {
  .site-header { height: 66px; }
  .nav-toggle { display: block; }
  .primary-nav { position: absolute; left: 20px; right: 20px; top: 65px; padding: 14px; display: none; align-items: stretch; flex-direction: column; gap: 2px; background: #071722; border: 1px solid #31556d; box-shadow: 0 20px 35px rgba(0,0,0,0.3); }
  .primary-nav.open { display: flex; }
  .primary-nav a { min-height: 44px; padding: 11px 12px; }
  .primary-nav .nav-cta { margin-top: 5px; text-align: center; }
  .hero { height: calc(100svh - 82px); min-height: 590px; max-height: 720px; }
  .hero-image { object-position: 58% center; }
  .hero-content { padding-top: 54px; }
  .hero h1 { max-width: 620px; font-size: 48px; }
  .hero-copy { max-width: 560px; font-size: 18px; }
  .hero-signal { display: none; }
  .promise-grid, .ai-layout, .progress-layout, .study-layout, .resources-content, .privacy-grid, .faq-layout { grid-template-columns: 1fr; gap: 42px; }
  .power-summary { grid-template-columns: 1fr 1fr; }
  .power-summary > div:nth-child(2) { border-right: 0; }
  .power-summary > p { grid-column: 1 / -1; border-top: 1px solid #31546b; }
  .privilege-head { display: none; }
  .privilege-row { grid-template-columns: 90px 1fr 1.2fr 105px; }
  .microwave-access { grid-template-columns: 1fr; }
  .app-workspace { grid-template-columns: 160px 1fr; }
  .app-side-rail { width: 160px; }
  .question-layout { grid-template-columns: 1fr; }
  .diagram-preview { max-width: 360px; }
  .mock-actions { grid-template-columns: 1fr 1fr; }
  .progress-dashboard { grid-template-columns: 1fr; }
  .chart-area { min-height: 330px; }
  .bar-chart { height: 250px; }
  .readiness-gauge { min-height: 250px; }
  .readiness-gauge > div { width: 140px; height: 140px; border-width: 11px; }
  .study-preview { grid-template-columns: 190px 1fr; }
  .study-preview > img { width: 190px; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .provider-visual { max-width: 620px; width: 100%; margin: 0 auto; }
  .cover-stage { margin: 0 auto; }
  .resource-categories { grid-template-columns: 1fr 1fr; }
  .resource-categories span:nth-child(odd) { border-right: 1px solid var(--line); }
  .resource-categories span:nth-child(even) { border-right: 0; }
  .resource-categories span:nth-child(n+3) { border-top: 1px solid var(--line); }
  .privacy-list { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr auto; }
  .footer-grid > p { grid-column: 1 / -1; grid-row: 2; }
}

@media (max-width: 620px) {
  .section-inner, .hero-content { width: min(100% - 30px, var(--max)); }
  h2 { font-size: 32px; }
  .section-heading { margin-bottom: 32px; }
  .brand { min-width: 0; }
  .brand strong { font-size: 12px; }
  .brand small { font-size: 9px; }
  .hero { height: calc(100svh - 76px); min-height: 600px; max-height: 690px; }
  .hero-image { object-position: 67% center; }
  .hero-shade { background: rgba(2, 10, 17, 0.58); }
  .hero-content { justify-content: center; padding: 34px 0 28px; }
  .hero h1 { max-width: 430px; font-size: 39px; }
  .hero-copy { max-width: 440px; margin-bottom: 22px; font-size: 16px; }
  .hero-actions { margin-bottom: 24px; }
  .hero-actions .button { width: 100%; }
  .hero-proof { grid-template-columns: 1fr 1fr; }
  .hero-proof div { min-height: 64px; padding: 9px 11px; }
  .hero-proof strong { font-size: 24px; }
  .hero-proof span { margin-top: 4px; font-size: 10px; }
  .platform-note { font-size: 10px; }
  .promise-band, .readiness-section, .features-section, .resources-section, .privacy-section { padding: 72px 0; }
  .experience-section, .privileges-section, .ai-section, .progress-section, .study-section, .faq-section { padding: 78px 0; }
  .promise-grid { gap: 26px; }
  .promise-grid > p { font-size: 16px; }
  .app-titlebar span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .app-workspace { min-height: 0; grid-template-columns: 1fr; padding: 8px; }
  .app-side-rail { display: none; }
  .tour-panel { padding: 12px; }
  .mock-status { font-size: 13px; }
  .question-layout { padding: 12px; }
  .mock-ai-row { grid-template-columns: auto 1fr; }
  .mock-ai-row b { grid-column: 1 / -1; }
  .mock-ai-row p { white-space: normal; }
  .chat-history article { max-width: 92%; font-size: 13px; }
  .progress-metrics { grid-template-columns: 1fr 1fr; }
  .study-preview { grid-template-columns: 1fr; }
  .study-preview > img { width: min(230px, 75%); margin: 0 auto; }
  .study-preview h3 { font-size: 27px; }
  .study-preview ul { grid-template-columns: 1fr; }
  .readiness-path { grid-template-columns: 1fr; border-top: 0; }
  .readiness-path li { min-height: 0; padding: 22px 0; display: grid; grid-template-columns: 50px 1fr; gap: 10px; border-right: 0; border-top: 1px solid var(--line); }
  .readiness-path h3 { margin: 0 0 8px; }
  .power-summary { grid-template-columns: 1fr; }
  .power-summary > div, .power-summary > p { min-height: 0; border-right: 0; border-bottom: 1px solid #31546b; }
  .power-summary > p { grid-column: auto; }
  .privilege-group-heading { grid-template-columns: 74px 1fr; }
  .privilege-group-heading h3 { font-size: 23px; }
  .privilege-row { min-height: 0; grid-template-columns: 1fr; gap: 13px; padding: 17px; }
  .privilege-row > div:first-child { display: flex; justify-content: space-between; }
  .split-ranges, .split-modes { grid-template-columns: 1fr; }
  .power-badge { width: fit-content; }
  .band-card-grid { grid-template-columns: 1fr; }
  .band-card { min-height: 0; }
  .frequency-chip-grid { grid-template-columns: 1fr 1fr; }
  .microwave-access { padding: 20px; }
  .chart-source { align-items: flex-start; flex-direction: column; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card { min-height: 0; }
  .provider-visual { min-height: 560px; }
  .provider-node { width: 125px; }
  .provider-node.ollama { top: 10%; }
  .provider-node.openai { top: 10%; }
  .provider-node.gemini { bottom: 8%; }
  .provider-node.claude { bottom: 8%; }
  .provider-orbit.one { width: 260px; height: 260px; }
  .provider-orbit.two { width: 340px; height: 340px; }
  .progress-layout { gap: 38px; }
  .readiness-visual { min-height: 510px; padding: 25px; }
  .readiness-dial { margin: 0 auto; }
  .score-bars { left: 25px; right: 25px; bottom: 45px; width: auto; height: 220px; }
  .pass-line { left: 25px; right: 25px; bottom: 45px; }
  .study-facts { grid-template-columns: 1fr 1fr 1fr; }
  .study-facts div { padding: 12px 7px; }
  .study-facts b { font-size: 27px; }
  .resources-content { gap: 24px; }
  .resources-visual img { aspect-ratio: 2.2 / 1; }
  .resource-categories { grid-template-columns: 1fr; }
  .resource-categories span { border-right: 0 !important; border-top: 1px solid var(--line); }
  .resource-categories span:first-child { border-top: 0; }
  .privacy-list { grid-template-columns: 1fr; }
  .privacy-list article { border-right: 0; }
  .faq-layout { gap: 28px; }
  .final-cta { padding: 72px 0; }
  .final-cta h2 { font-size: 39px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-grid > p { grid-column: auto; grid-row: auto; }
  .legal { flex-direction: column; gap: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
  .hero-image { transform: translateY(-4%); }
}