:root {
  --bg: #f3f6f8;
  --surface: #ffffff;
  --text: #0b2d5b;
  --text-soft: #3e5670;
  --line: rgba(11, 45, 91, 0.14);
  --button: #0b2d5b;
  --button-text: #ffffff;
  --button-hover: #16386a;
  --focus: #0b2d5b;
  --index: #6d94a8;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --sans: "Avenir Next", Avenir, "Segoe UI", "Helvetica Neue", Helvetica, Arial, sans-serif;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #081624;
    --surface: #0e2238;
    --text: #eef4f8;
    --text-soft: #b7c8d8;
    --line: rgba(207, 239, 255, 0.16);
    --button: #cfefff;
    --button-text: #071422;
    --button-hover: #e7f7ff;
    --focus: #cfefff;
    --index: #9ec9d8;
    color-scheme: dark;
  }
}

[data-theme="dark"] {
  --bg: #081624;
  --surface: #0e2238;
  --text: #eef4f8;
  --text-soft: #b7c8d8;
  --line: rgba(207, 239, 255, 0.16);
  --button: #cfefff;
  --button-text: #071422;
  --button-hover: #e7f7ff;
  --focus: #cfefff;
  --index: #9ec9d8;
  color-scheme: dark;
}

[data-theme="light"] {
  color-scheme: light;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

img {
  max-width: 100%;
  height: auto;
}

h1, h2, h3, p {
  text-wrap: pretty;
}

h1, h2, h3 {
  font-family: var(--serif);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.08;
  text-wrap: balance;
}

a {
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

::selection {
  background: #cfefff;
  color: #071422;
}

.skip {
  position: absolute;
  left: 16px;
  top: -48px;
  z-index: 40;
  background: #ffffff;
  color: #0b2d5b;
  padding: 10px 14px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
}

.skip:focus {
  top: 12px;
}

.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;
}

.wrap {
  width: min(1120px, calc(100% - 48px));
  margin-inline: auto;
}

.noscript {
  margin: 0;
  padding: 12px 24px;
  background: #0b2d5b;
  color: #f4f8fb;
  text-align: center;
  font-size: 0.92rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  height: 4.5rem;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}

@supports (backdrop-filter: blur(16px)) {
  .site-header {
    background: color-mix(in srgb, var(--bg) 86%, transparent);
    backdrop-filter: blur(16px);
  }
}

.site-header.is-scrolled {
  box-shadow: 0 10px 30px rgba(7, 24, 48, 0.06);
}

.header-inner {
  height: 4.5rem;
  display: flex;
  align-items: center;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
  flex: none;
}

.logo {
  width: auto;
  height: 36px;
  display: block;
}

.logo-dark { display: none; }

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .logo-light { display: none; }
  :root:not([data-theme="light"]) .logo-dark { display: block; }
}

[data-theme="dark"] .logo-light { display: none; }
[data-theme="dark"] .logo-dark { display: block; }
[data-theme="light"] .logo-light { display: block; }
[data-theme="light"] .logo-dark { display: none; }

.wordmark {
  font-family: var(--serif);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  flex: 1;
}

.nav a {
  text-decoration: none;
  color: var(--text-soft);
  font-size: 0.94rem;
  font-weight: 500;
}

.nav a:hover {
  color: var(--text);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}

.icon-button,
.menu-toggle {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
}

.icon-button:hover,
.menu-toggle:hover {
  border-color: var(--text-soft);
}

.icon-button svg,
.menu-toggle svg {
  width: 18px;
  height: 18px;
  display: block;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon-button svg {
  width: 20px;
  height: 20px;
}

.icon-sun { display: none; }

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .icon-moon { display: none; }
  :root:not([data-theme="light"]) .icon-sun { display: block; }
}

[data-theme="dark"] .icon-moon { display: none; }
[data-theme="dark"] .icon-sun { display: block; }
[data-theme="light"] .icon-moon { display: block; }
[data-theme="light"] .icon-sun { display: none; }

.menu-toggle { display: none; }
.menu-toggle .icon-close { display: none; }
.menu-toggle[aria-expanded="true"] .icon-open { display: none; }
.menu-toggle[aria-expanded="true"] .icon-close { display: block; }

.hero {
  position: relative;
  min-height: calc(100svh - 4.5rem);
  display: flex;
  align-items: center;
  color: #f7fbfe;
  overflow: hidden;
}

.hero-media,
.hero-shade {
  position: absolute;
  inset: 0;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 70% center;
}

.hero-shade {
  background:
    linear-gradient(90deg, rgba(5, 16, 34, 0.86) 0%, rgba(5, 16, 34, 0.62) 46%, rgba(5, 16, 34, 0.28) 100%),
    linear-gradient(180deg, rgba(5, 16, 34, 0.18) 0%, rgba(5, 16, 34, 0.08) 42%, rgba(5, 16, 34, 0.45) 100%);
}

.hero-grid {
  position: relative;
  z-index: 2;
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
  padding: 48px 0;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.78fr);
  gap: 48px;
  align-items: center;
}

.pill {
  display: inline-flex;
  align-items: center;
  margin: 0 0 18px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: rgba(8, 22, 36, 0.28);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 0.72rem;
  font-weight: 600;
}

.hero-eyebrow {
  margin: 0 0 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.78rem;
  font-weight: 600;
  color: #d7f3f8;
}

.hero h1 {
  margin: 0 0 18px;
  font-size: clamp(3.1rem, 6.2vw, 5.5rem);
  color: #ffffff;
}

.lede {
  margin: 0;
  max-width: 38rem;
  font-size: 1.12rem;
  line-height: 1.6;
  color: rgba(247, 251, 254, 0.9);
}

.trio {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 0;
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.75rem;
  font-weight: 600;
  color: #d7f3f8;
}

.trio li {
  display: inline-flex;
  align-items: center;
}

.trio li + li::before {
  content: "";
  width: 4px;
  height: 4px;
  margin: 0 12px;
  border-radius: 50%;
  background: #b5e0e8;
}

.preview {
  background: rgba(255, 255, 255, 0.94);
  color: #0b2d5b;
  border-radius: 22px;
  padding: 26px 24px 22px;
  box-shadow: 0 30px 70px rgba(3, 12, 24, 0.32);
  color-scheme: light;
}

.preview-kicker {
  margin: 0 0 6px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 0.7rem;
  font-weight: 700;
  color: #4a627c;
}

.preview h2 {
  margin: 0 0 8px;
  font-size: 1.85rem;
  color: #0b2d5b;
}

.preview dl {
  margin: 12px 0 0;
}

.preview dl > div {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-top: 1px solid rgba(11, 45, 91, 0.1);
}

.preview dt {
  color: #4a627c;
  font-size: 0.92rem;
}

.preview dd {
  margin: 0;
  font-weight: 600;
  text-align: right;
}

.preview-note {
  margin: 14px 0 0;
  padding: 12px 14px;
  border-radius: 12px;
  background: #e5f6fb;
  color: #0b2d5b;
  font-size: 0.92rem;
}

.section {
  padding: 88px 0;
}

.section-intro {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: end;
  margin-bottom: 42px;
}

.eyebrow {
  margin: 0 0 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-soft);
}

.section h2 {
  margin: 0;
  font-size: clamp(2.15rem, 4vw, 3.45rem);
}

.deck {
  margin: 0;
  color: var(--text-soft);
  font-size: 1.05rem;
}

.signals {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
}

.signals li {
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--line);
  font-size: 0.92rem;
  font-weight: 600;
}

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.steps li {
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.step-index {
  display: block;
  margin-bottom: 10px;
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.7rem;
  color: var(--index);
}

.steps h3,
.exchange h3,
.principles h3 {
  margin: 0 0 8px;
  font-size: 1.55rem;
}

.steps p,
.principles p,
.exchange p {
  margin: 0;
  color: var(--text-soft);
}

.exchange {
  margin-top: 56px;
}

.exchange h3 {
  margin-bottom: 8px;
}

.exchange-row {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 24px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.exchange-row p:first-child {
  margin: 0;
  color: var(--text);
  font-weight: 600;
}

.waters {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  grid-template-rows: 280px 280px;
  gap: 16px;
}

.water {
  position: relative;
  margin: 0;
  border-radius: 18px;
  overflow: hidden;
  min-height: 240px;
  background: #0b2d5b;
}

.water-large {
  grid-row: 1 / span 2;
  min-height: 100%;
}

.water img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.water figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 56px 22px 20px;
  background: linear-gradient(transparent, rgba(4, 16, 32, 0.82));
  color: #f7fbfe;
}

.water h3 {
  margin: 0 0 4px;
  font-size: 1.7rem;
  color: #ffffff;
}

.water p {
  margin: 0;
  max-width: 36rem;
  color: rgba(247, 251, 254, 0.9);
}

.gallery {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 18px;
  align-items: start;
}

.gallery figure {
  margin: 0;
}

.gallery figure:last-child {
  margin-top: 64px;
}

.gallery img {
  width: 100%;
  height: auto;
  border-radius: 18px;
  display: block;
  object-fit: cover;
  aspect-ratio: 16 / 10;
}

.gallery figcaption {
  margin-top: 10px;
  color: var(--text-soft);
  font-size: 0.92rem;
}

.principles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  column-gap: 36px;
}

.principles li {
  padding: 26px 0;
  border-top: 1px solid var(--line);
}

.site-footer {
  padding: 48px 0 36px;
  border-top: 1px solid var(--line);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 28px 40px;
}

.footer-tag {
  margin: 12px 0 0;
  font-family: var(--serif);
  font-style: italic;
  color: var(--text-soft);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: end;
  gap: 12px 22px;
  align-content: start;
}

.footer-nav a {
  text-decoration: none;
  color: var(--text-soft);
  font-weight: 500;
}

.footer-nav a:hover {
  color: var(--text);
}

.legal {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--text-soft);
  font-size: 0.9rem;
}

section[id] {
  scroll-margin-top: 5.4rem;
}

@media (max-width: 980px) {
  .hero-grid,
  .section-intro,
  .steps,
  .gallery,
  .principles,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .waters {
    grid-template-columns: 1fr;
    grid-template-rows: none;
  }

  .water,
  .water-large {
    min-height: 320px;
    grid-row: auto;
  }

  .gallery figure:last-child {
    margin-top: 0;
  }

  .exchange-row {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .footer-nav {
    justify-content: start;
  }
}

@media (max-width: 960px) {
  .menu-toggle { display: inline-flex; }

  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 20px 18px;
    background: var(--surface);
    border-bottom: 1px solid var(--line);
  }

  .nav.is-open { display: flex; }

  .header-inner { gap: 10px; }

  .nav a {
    padding: 12px 0;
    border-top: 1px solid var(--line);
    color: var(--text);
  }
}

@media (max-width: 640px) {
  .wrap,
  .hero-grid {
    width: min(1120px, calc(100% - 32px));
  }

  .section { padding: 64px 0; }
  .hero h1 { font-size: clamp(2.6rem, 12vw, 3.6rem); }
  .wordmark { letter-spacing: 0.14em; font-size: 0.7rem; }
  .hero-grid { padding-top: 36px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}