@font-face {
  font-family: Inter;
  src: url('assets/fonts/InterVariable.woff2') format('woff2');
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}

:root {
  color-scheme: light;
  --navy: #1e305f;
  --navy-dark: #1e305f;
  --ink: #1e305f;
  --muted: #8792aa;
  --line: #d1d7e1;
  --paper: #ffffff;
  --wash: #f5f6f8;
  --teal: #296f8a;
  --green: #2c5f45;
  --gold: #e8a33d;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: #edf0f6;
  color: var(--ink);
  font-family: Inter, Arial, Helvetica, sans-serif;
  line-height: 1.55;
}

a { color: inherit; }

.cover {
  min-height: 62vh;
  display: grid;
  align-items: end;
  background: var(--navy);
  color: white;
  padding: clamp(48px, 9vw, 120px) clamp(24px, 8vw, 112px);
  position: relative;
  overflow: hidden;
}

.cover::before,
.cover::after {
  content: "";
  position: absolute;
  right: -150px;
  top: 50%;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 50%;
  transform: translateY(-50%) rotate(-28deg) scaleX(.7);
  pointer-events: none;
}

.cover::before { width: 760px; height: 430px; }
.cover::after { width: 520px; height: 300px; border-color: rgba(255,255,255,.11); }

.cover-inner { position: relative; z-index: 1; }

.cover-inner,
.intro,
.format,
.comparison,
.system-notes {
  width: min(1320px, 100%);
  margin: 0 auto;
}

.cover-mark {
  width: 184px;
  height: auto;
  margin-bottom: clamp(64px, 11vh, 132px);
}

.eyebrow {
  margin: 0 0 18px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .17em;
  text-transform: uppercase;
}

.cover h1 {
  max-width: 880px;
  margin: 0;
  font-family: Inter, Arial, Helvetica, sans-serif;
  font-size: clamp(50px, 8vw, 104px);
  font-weight: 400;
  letter-spacing: -.045em;
  line-height: .96;
}

.cover h1 span { display: block; }

.cover .subtitle {
  margin: 24px 0 0;
  color: #dce1ea;
  font-size: clamp(18px, 2vw, 26px);
}

.intro {
  padding: clamp(64px, 10vw, 132px) clamp(24px, 5vw, 72px);
  display: grid;
  grid-template-columns: minmax(190px, .7fr) minmax(0, 2fr);
  gap: 56px;
  width: 100%;
  max-width: 1320px;
  overflow: hidden;
}

.intro h2,
.comparison h2,
.system-notes h2 {
  margin: 0;
  color: var(--navy-dark);
  font-family: Inter, Arial, Helvetica, sans-serif;
  font-size: clamp(36px, 4vw, 58px);
  font-weight: 400;
  letter-spacing: -.035em;
  line-height: 1.08;
}

.intro-copy {
  max-width: 800px;
  width: 100%;
  min-width: 0;
  margin: 0;
  color: #536077;
  font-size: clamp(19px, 2.2vw, 27px);
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.format {
  background: var(--paper);
  border-top: 7px solid var(--navy);
  margin-bottom: 72px;
}

.format-heading {
  padding: clamp(42px, 6vw, 80px);
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 28px;
}

/* A restrained orbit motif gives the first format a clear lead without competing with the content. */
.format:first-of-type .format-heading { position: relative; overflow: hidden; }
.format:first-of-type .format-heading::after,
.format:first-of-type .format-heading::before { content: ""; position: absolute; right: -110px; top: 50%; border: 1px solid rgba(30,48,95,.14); border-radius: 50%; transform: translateY(-50%) rotate(-28deg) scaleX(.72); pointer-events: none; }
.format:first-of-type .format-heading::after { width: 520px; height: 300px; }
.format:first-of-type .format-heading::before { width: 380px; height: 220px; }
.format:first-of-type .format-number,
.format:first-of-type .format-title { position: relative; z-index: 1; }
.format:first-of-type .format-number { padding-top: 8px; }
.format:first-of-type .format-title { padding-left: 40px; border-left: 1px solid var(--line); }

.format-number {
  color: var(--navy);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .18em;
}

.format-title h2 {
  margin: 0;
  color: var(--navy-dark);
  font-family: Inter, Arial, Helvetica, sans-serif;
  font-size: clamp(38px, 5vw, 64px);
  font-weight: 400;
  letter-spacing: -.035em;
  line-height: 1.05;
}

.proposal-status { display: inline-block; margin: 18px 0 0; color: var(--navy); font-size: 11px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }

.format-title > p {
  max-width: 720px;
  margin: 22px 0 0;
  color: #536077;
  font-size: 18px;
}

.candidate {
  display: inline-block;
  margin-top: 24px;
  border-left: 4px solid var(--teal);
  padding: 7px 0 7px 16px;
  color: var(--navy);
  font-size: 14px;
  font-weight: 700;
}

.spec-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.spec {
  min-height: 190px;
  padding: 34px clamp(24px, 4vw, 52px);
  border-right: 1px solid var(--line);
}

.spec:last-child { border-right: 0; }
.spec h3,
.frame-label,
.implementation h3 {
  margin: 0 0 14px;
  color: var(--navy);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .15em;
  text-transform: uppercase;
}

.spec p,
.spec ul {
  margin: 0;
  color: #536077;
  font-size: 15px;
}

.spec ul { padding-left: 18px; }

.render-grid {
  padding: clamp(42px, 6vw, 80px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) 414px;
  gap: 32px;
  align-items: start;
  background: var(--wash);
}

.frame-label { margin-bottom: 16px; }

.email-frame-wrap {
  padding: 12px;
  border: 1px solid #c3cbe0;
  background: #dce1ea;
  box-shadow: 0 16px 42px rgba(23, 38, 76, .08);
}

.email-frame {
  display: block;
  width: 100%;
  height: 1840px;
  border: 0;
  background: white;
}

.desktop-preview .frame-01 { height: 1776px; }
.desktop-preview .frame-02 { height: 2204px; }
.desktop-preview .frame-03 { height: 1675px; }
.mobile-preview { max-width: 414px; }
.mobile-preview .frame-01 { height: 2481px; }
.mobile-preview .frame-02 { height: 2637px; }
.mobile-preview .frame-03 { height: 2366px; }

.outlook-panel {
  margin-top: 36px;
  padding: 30px;
  background: var(--navy);
  color: white;
}

.outlook-panel h3 { color: white; }
.outlook-panel p { margin: 0 0 22px; color: #dce1ea; font-size: 15px; }

.outlook-list {
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
}

.outlook-list li {
  padding: 10px 0;
  border-top: 1px solid rgba(255,255,255,.18);
  font-size: 14px;
}

.outlook-link {
  display: inline-block;
  min-height: 46px;
  padding: 12px 18px;
  background: white;
  color: var(--navy);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.comparison,
.system-notes {
  padding: clamp(64px, 9vw, 120px) clamp(24px, 5vw, 72px);
}

.comparison-grid {
  margin-top: 48px;
  border-top: 1px solid var(--line);
}

.comparison-row {
  display: grid;
  grid-template-columns: 90px minmax(230px, .9fr) minmax(0, 1.7fr);
  gap: 28px;
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
}

.comparison-row strong { color: var(--navy); }
.comparison-row p { margin: 0; color: #536077; }

.system-notes {
  background: var(--navy);
  color: white;
}

.system-notes h2 { color: white; }
.architecture {
  margin-top: 42px;
  display: grid;
  grid-template-columns: 1fr 1.4fr repeat(4, 1fr);
  gap: 1px;
  background: rgba(255,255,255,.28);
}

.architecture div {
  min-height: 108px;
  display: grid;
  place-items: center;
  padding: 20px;
  background: var(--navy);
  text-align: center;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
}

.architecture .future { color: #c3cbe0; }
.system-note { max-width: 760px; margin: 30px 0 0; color: #dce1ea; }

footer {
  padding: 30px 24px;
  background: #1e305f;
  color: #c3cbe0;
  text-align: center;
  font-size: 12px;
}

@media (max-width: 900px) {
  .intro,
  .format-heading,
  .render-grid { grid-template-columns: 1fr; }
  .render-grid { padding: 24px; }
  .format-number { margin-bottom: -12px; }
  .spec-grid { grid-template-columns: 1fr; }
  .spec { min-height: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .spec:last-child { border-bottom: 0; }
  .mobile-preview { margin: 0 auto; }
  .intro { display: block; }
  .intro h2 { margin-bottom: 30px; }
  .intro-copy { width: 300px; max-width: 100%; font-size: 17px; }
  .format:first-of-type .format-title { padding-left: 0; border-left: 0; }
  .architecture { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
  .cover-mark { width: 190px; }
  .comparison-row { grid-template-columns: 52px 1fr; }
  .comparison-row p { grid-column: 2; }
  .render-grid { padding: 12px; }
  .email-frame-wrap { padding: 8px; }
  .desktop-preview .frame-01,
  .mobile-preview .frame-01 { height: 2896px; }
  .desktop-preview .frame-02,
  .mobile-preview .frame-02 { height: 3017px; }
  .desktop-preview .frame-03,
  .mobile-preview .frame-03 { height: 2829px; }
  .architecture { grid-template-columns: 1fr; }
}