:root {
  color-scheme: dark;
  --bg: #03111d;
  --bg-2: #061d30;
  --surface: rgba(7, 29, 48, 0.88);
  --surface-2: rgba(10, 42, 68, 0.86);
  --line: rgba(120, 210, 255, 0.22);
  --text: #f2fbff;
  --muted: rgba(226, 242, 252, 0.74);
  --cyan: #34c8ff;
  --green: #63f3a3;
  --gold: #ffd166;
  --red: #ff5e7a;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

.seo-page {
  min-height: 100vh;
  overflow-x: hidden;
}

.seo-nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 68px;
  padding: 12px clamp(18px, 4vw, 54px);
  border-bottom: 1px solid rgba(120, 210, 255, 0.16);
  background: rgba(2, 10, 18, 0.78);
  backdrop-filter: blur(18px);
}

.seo-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 1000;
  line-height: 1;
}

.seo-brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(52, 200, 255, 0.38);
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(52, 200, 255, 0.22), rgba(99, 243, 163, 0.12));
  color: var(--cyan);
  font-size: 19px;
}

.seo-brand span {
  display: block;
  color: #fff;
  font-size: 15px;
}

.seo-brand b {
  display: inline-block;
  margin-top: 3px;
  padding: 3px 6px;
  border-radius: 5px;
  background: linear-gradient(135deg, #159dff, #2e8cff);
  color: #fff;
  font-size: 11px;
}

.seo-nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  color: rgba(235, 248, 255, 0.78);
  font-size: 13px;
  font-weight: 850;
}

.seo-nav-links a:hover {
  color: #fff;
}

.seo-nav-cta,
.seo-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 16px;
  border: 1px solid rgba(99, 243, 163, 0.38);
  border-radius: 7px;
  background: linear-gradient(135deg, rgba(99, 243, 163, 0.92), rgba(52, 200, 255, 0.88));
  color: #03111d;
  font-size: 13px;
  font-weight: 1000;
}

.seo-hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: flex-end;
  padding: 132px clamp(18px, 5vw, 72px) 72px;
  isolation: isolate;
  background:
    linear-gradient(90deg, rgba(2, 8, 19, 0.94) 0%, rgba(2, 8, 19, 0.70) 45%, rgba(2, 8, 19, 0.18) 100%),
    linear-gradient(180deg, rgba(2, 8, 19, 0.08), rgba(2, 8, 19, 0.82)),
    var(--hero-image) center / cover no-repeat;
}

.seo-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  z-index: -1;
  height: 34%;
  background: linear-gradient(180deg, transparent, var(--bg));
}

.seo-hero-content {
  width: min(760px, 100%);
}

.seo-beta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 950;
}

.seo-beta::before {
  content: "";
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: var(--green);
  box-shadow: 0 0 0 5px rgba(99, 243, 163, 0.13), 0 0 22px rgba(99, 243, 163, 0.72);
}

.seo-hero h1 {
  max-width: 11ch;
  margin: 0;
  color: #fff;
  font-size: clamp(48px, 8vw, 108px);
  line-height: 0.94;
  letter-spacing: 0;
}

.seo-hero p {
  max-width: 62ch;
  margin: 22px 0 0;
  color: rgba(237, 249, 255, 0.82);
  font-size: clamp(17px, 2.2vw, 22px);
  font-weight: 740;
  line-height: 1.5;
}

.seo-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.seo-button.secondary {
  border-color: rgba(120, 210, 255, 0.28);
  background: rgba(3, 17, 29, 0.72);
  color: #e9f8ff;
}

.seo-metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  border-top: 1px solid rgba(120, 210, 255, 0.14);
  border-bottom: 1px solid rgba(120, 210, 255, 0.14);
  background: rgba(120, 210, 255, 0.12);
}

.seo-metric {
  min-height: 112px;
  padding: 24px clamp(18px, 3vw, 34px);
  background: var(--bg-2);
}

.seo-metric strong {
  display: block;
  color: var(--green);
  font-size: clamp(24px, 3vw, 38px);
  line-height: 1;
}

.seo-metric span {
  display: block;
  margin-top: 8px;
  color: rgba(226, 242, 252, 0.70);
  font-size: 13px;
  font-weight: 850;
}

.seo-section {
  padding: clamp(56px, 7vw, 96px) clamp(18px, 5vw, 72px);
  background: var(--bg);
}

.seo-section.alt {
  background:
    linear-gradient(180deg, rgba(52, 200, 255, 0.06), transparent 48%),
    #041726;
}

.seo-section-header {
  max-width: 780px;
  margin-bottom: 34px;
}

.seo-section-header h2 {
  margin: 0;
  color: #fff;
  font-size: clamp(31px, 4.4vw, 58px);
  line-height: 1.03;
  letter-spacing: 0;
}

.seo-section-header p {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.62;
}

.seo-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.seo-card {
  min-height: 230px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(12, 45, 72, 0.78), rgba(3, 17, 29, 0.92)),
    var(--surface);
}

.seo-card h3 {
  margin: 0;
  color: #fff;
  font-size: 21px;
  line-height: 1.22;
  letter-spacing: 0;
}

.seo-card p {
  margin: 12px 0 0;
  color: rgba(226, 242, 252, 0.72);
  font-size: 15px;
  font-weight: 680;
  line-height: 1.58;
}

.seo-card a {
  display: inline-flex;
  margin-top: 18px;
  color: var(--green);
  font-size: 13px;
  font-weight: 950;
}

.seo-card time {
  display: block;
  margin-bottom: 14px;
  color: var(--gold);
  font-size: 12px;
  font-weight: 950;
  text-transform: uppercase;
}

.seo-card.compact {
  min-height: 0;
}

.seo-article-hero {
  padding: 132px clamp(18px, 5vw, 72px) 58px;
  background:
    linear-gradient(90deg, rgba(2, 8, 19, 0.96), rgba(2, 8, 19, 0.72)),
    var(--hero-image) center / cover no-repeat;
}

.seo-breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 26px;
  color: rgba(226, 242, 252, 0.62);
  font-size: 12px;
  font-weight: 850;
}

.seo-breadcrumbs a {
  color: var(--green);
}

.seo-article-hero h1 {
  max-width: 920px;
  margin: 0;
  color: #fff;
  font-size: clamp(40px, 6.2vw, 86px);
  line-height: 0.98;
  letter-spacing: 0;
}

.seo-article-hero p {
  max-width: 760px;
  margin: 22px 0 0;
  color: rgba(237, 249, 255, 0.82);
  font-size: clamp(17px, 2vw, 21px);
  font-weight: 720;
  line-height: 1.55;
}

.seo-article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 24px;
}

.seo-article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 330px);
  gap: 32px;
  padding: clamp(46px, 6vw, 76px) clamp(18px, 5vw, 72px);
  background: var(--bg);
}

.seo-article {
  max-width: 900px;
  min-width: 0;
}

.seo-article h2 {
  margin: 44px 0 14px;
  color: #fff;
  font-size: clamp(28px, 3.6vw, 46px);
  line-height: 1.08;
  letter-spacing: 0;
}

.seo-article h2:first-child {
  margin-top: 0;
}

.seo-article h3 {
  margin: 26px 0 10px;
  color: var(--green);
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: 0;
}

.seo-article p,
.seo-article li {
  color: rgba(226, 242, 252, 0.76);
  font-size: 17px;
  font-weight: 680;
  line-height: 1.72;
}

.seo-article p {
  margin: 0 0 18px;
}

.seo-article ul,
.seo-article ol {
  display: grid;
  gap: 10px;
  margin: 18px 0 28px;
  padding-left: 22px;
}

.seo-article strong {
  color: #fff;
}

.seo-note {
  margin: 28px 0;
  padding: 20px;
  border: 1px solid rgba(99, 243, 163, 0.26);
  border-radius: 8px;
  background: rgba(15, 64, 74, 0.42);
}

.seo-note strong {
  display: block;
  margin-bottom: 8px;
  color: var(--green);
  font-size: 15px;
}

.seo-sidebar {
  position: sticky;
  top: 90px;
  align-self: start;
  display: grid;
  gap: 14px;
}

.seo-sidebar-card {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(7, 29, 48, 0.82);
}

.seo-sidebar-card h2,
.seo-sidebar-card h3 {
  margin: 0 0 12px;
  color: #fff;
  font-size: 17px;
  line-height: 1.2;
}

.seo-sidebar-card a {
  display: block;
  padding: 9px 0;
  border-top: 1px solid rgba(120, 210, 255, 0.12);
  color: rgba(226, 242, 252, 0.78);
  font-size: 13px;
  font-weight: 850;
}

.seo-sidebar-card a:hover {
  color: var(--green);
}

.seo-guide-list {
  display: grid;
  gap: 12px;
}

.seo-guide-list a {
  display: grid;
  gap: 6px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(7, 29, 48, 0.72);
}

.seo-guide-list strong {
  color: #fff;
  font-size: 18px;
}

.seo-guide-list span {
  color: rgba(226, 242, 252, 0.66);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.5;
}

.seo-table {
  width: 100%;
  margin: 24px 0 30px;
  border-collapse: collapse;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.seo-table th,
.seo-table td {
  padding: 14px;
  border-bottom: 1px solid rgba(120, 210, 255, 0.14);
  text-align: left;
  vertical-align: top;
}

.seo-table th {
  color: #fff;
  font-size: 13px;
  font-weight: 950;
  text-transform: uppercase;
}

.seo-table td {
  color: rgba(226, 242, 252, 0.74);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.5;
}

.seo-copy-box {
  margin: 18px 0;
  padding: 18px;
  border: 1px solid rgba(120, 210, 255, 0.20);
  border-radius: 8px;
  background: rgba(2, 12, 22, 0.82);
}

.seo-copy-box b,
.seo-copy-box strong {
  display: block;
  margin-bottom: 8px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 950;
  text-transform: uppercase;
}

.seo-copy-box p {
  margin: 0;
  color: rgba(238, 250, 255, 0.82);
  font-size: 15px;
  font-weight: 740;
  line-height: 1.65;
}

.seo-resource-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 24px;
}

.seo-resource {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(7, 29, 48, 0.82);
}

.seo-resource img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.seo-resource div {
  padding: 16px;
}

.seo-resource strong {
  display: block;
  color: #fff;
  font-size: 16px;
}

.seo-resource span {
  display: block;
  margin-top: 6px;
  color: rgba(226, 242, 252, 0.66);
  font-size: 13px;
  font-weight: 720;
  line-height: 1.45;
}

.seo-link-strip {
  display: grid;
  gap: 9px;
  margin: 22px 0;
}

.seo-link-strip a {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid rgba(120, 210, 255, 0.16);
  border-radius: 8px;
  background: rgba(7, 29, 48, 0.62);
  color: rgba(236, 248, 255, 0.86);
  font-size: 14px;
  font-weight: 850;
}

.seo-link-strip a::after {
  content: "airlinemanagerlive.com";
  flex: 0 0 auto;
  color: var(--green);
  font-size: 12px;
}

.seo-fact-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin-top: 24px;
  border: 1px solid rgba(120, 210, 255, 0.16);
  border-radius: 8px;
  overflow: hidden;
  background: rgba(120, 210, 255, 0.12);
}

.seo-fact {
  min-height: 104px;
  padding: 18px;
  background: rgba(7, 29, 48, 0.86);
}

.seo-fact strong {
  display: block;
  color: var(--green);
  font-size: 20px;
  line-height: 1.1;
}

.seo-fact span {
  display: block;
  margin-top: 8px;
  color: rgba(226, 242, 252, 0.68);
  font-size: 13px;
  font-weight: 760;
  line-height: 1.4;
}

.seo-media-row {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 26px;
  align-items: center;
}

.seo-media-frame {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.32);
}

.seo-media-frame img {
  width: 100%;
  min-height: 340px;
  object-fit: cover;
}

.seo-list {
  display: grid;
  gap: 12px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.seo-list li {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  color: rgba(238, 250, 255, 0.78);
  font-size: 16px;
  font-weight: 740;
  line-height: 1.5;
}

.seo-list li::before {
  content: "";
  width: 12px;
  height: 12px;
  margin-top: 7px;
  border-radius: 999px;
  background: var(--cyan);
  box-shadow: 0 0 18px rgba(52, 200, 255, 0.58);
}

.seo-keywords {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
}

.seo-keywords span,
.seo-pill {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 7px 10px;
  border: 1px solid rgba(120, 210, 255, 0.18);
  border-radius: 999px;
  background: rgba(5, 25, 42, 0.82);
  color: rgba(228, 246, 255, 0.82);
  font-size: 12px;
  font-weight: 900;
}

.seo-faq {
  display: grid;
  gap: 10px;
}

.seo-faq details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(7, 29, 48, 0.78);
}

.seo-faq summary {
  cursor: pointer;
  padding: 19px 20px;
  color: #fff;
  font-size: 17px;
  font-weight: 950;
}

.seo-faq p {
  margin: 0;
  padding: 0 20px 20px;
  color: rgba(226, 242, 252, 0.72);
  font-size: 15px;
  font-weight: 680;
  line-height: 1.58;
}

.seo-cta {
  padding: clamp(56px, 8vw, 110px) clamp(18px, 5vw, 72px);
  background:
    linear-gradient(90deg, rgba(2, 8, 19, 0.93), rgba(2, 8, 19, 0.56)),
    url("/assets/tower_night_ops.jpg") center / cover no-repeat;
}

.seo-cta h2 {
  max-width: 760px;
  margin: 0;
  color: #fff;
  font-size: clamp(36px, 5vw, 72px);
  line-height: 1;
  letter-spacing: 0;
}

.seo-cta p {
  max-width: 620px;
  margin: 18px 0 0;
  color: rgba(237, 249, 255, 0.80);
  font-size: 18px;
  font-weight: 720;
  line-height: 1.55;
}

.seo-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 18px;
  padding: 30px clamp(18px, 5vw, 72px);
  border-top: 1px solid rgba(120, 210, 255, 0.14);
  background: #020a12;
  color: rgba(226, 242, 252, 0.62);
  font-size: 13px;
  font-weight: 720;
}

.seo-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

@media (max-width: 900px) {
  .seo-nav {
    position: sticky;
    top: 0;
  }

  .seo-nav-links {
    display: none;
  }

  .seo-hero {
    min-height: 86vh;
    padding-top: 96px;
  }

  .seo-metrics,
  .seo-fact-grid,
  .seo-grid,
  .seo-media-row,
  .seo-resource-grid,
  .seo-article-layout {
    grid-template-columns: 1fr;
  }

  .seo-sidebar {
    position: static;
  }

  .seo-media-frame img {
    min-height: 240px;
  }
}

@media (max-width: 560px) {
  .seo-nav {
    min-height: 62px;
  }

  .seo-brand span {
    font-size: 13px;
  }

  .seo-brand-mark {
    width: 32px;
    height: 32px;
  }

  .seo-nav-cta {
    min-height: 38px;
    padding: 0 12px;
    font-size: 12px;
  }

  .seo-hero {
    min-height: auto;
    padding: 86px 18px 64px;
  }

  .seo-article-hero {
    padding: 86px 18px 44px;
  }

  .seo-article-layout {
    padding-right: 18px;
    padding-left: 18px;
    overflow-x: hidden;
  }

  .seo-article {
    width: 100%;
    max-width: 100%;
  }

  .seo-table {
    display: block;
    max-width: 100%;
    overflow-x: auto;
    white-space: normal;
  }

  .seo-hero h1 {
    max-width: 10ch;
  }

  .seo-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .seo-button {
    width: 100%;
  }
}