:root {
  --ink: #0b1f22;
  --deep: #092f35;
  --water: #0d4a51;
  --foam: #eef4ef;
  --sand: #d8cfb6;
  --white: #ffffff;
  --muted: #aebfbc;
  --line: rgba(255,255,255,.18);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--foam);
  line-height: 1.55;
}

a { color: inherit; }

.wrap {
  width: min(1120px, calc(100% - 40px));
  margin-inline: auto;
}

.narrow { max-width: 760px; }

.hero {
  min-height: 92vh;
  color: var(--white);
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 75% 15%, rgba(130,207,200,.22), transparent 30%),
    linear-gradient(160deg, #164f55 0%, #0a3036 46%, #061d21 100%);
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto -10% -180px;
  height: 380px;
  border-radius: 50% 50% 0 0;
  background: rgba(255,255,255,.035);
  transform: rotate(-3deg);
}

.nav {
  height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  position: relative;
  z-index: 2;
}

.brand {
  text-decoration: none;
  font-weight: 800;
  letter-spacing: .18em;
  font-size: .86rem;
}

.nav-link {
  text-decoration: none;
  font-size: .9rem;
  color: #d8e6e3;
}

.hero-inner {
  position: relative;
  z-index: 2;
  padding: 12vh 0 18vh;
  max-width: 1120px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: .16em;
  font-size: .76rem;
  font-weight: 750;
  margin: 0 0 18px;
}

.hero h1 {
  font-size: clamp(3.4rem, 9vw, 7.5rem);
  letter-spacing: -.065em;
  line-height: .9;
  max-width: 900px;
  margin: 0;
  font-weight: 720;
}

.lead {
  max-width: 660px;
  font-size: clamp(1.15rem, 2.5vw, 1.55rem);
  color: #d7e5e2;
  margin: 34px 0 0;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 38px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 22px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  font-size: .94rem;
}

.primary {
  background: var(--sand);
  color: var(--ink);
}

.secondary {
  border: 1px solid rgba(255,255,255,.35);
  color: var(--white);
}

.depth-lines {
  position: absolute;
  right: 0;
  top: 18%;
  width: 28%;
  height: 62%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  color: rgba(255,255,255,.38);
  font-size: .72rem;
}

.depth-lines span {
  display: flex;
  align-items: center;
  gap: 12px;
}

.depth-lines span::after {
  content: "";
  height: 1px;
  flex: 1;
  background: rgba(255,255,255,.18);
}

.section { padding: 110px 0; }

.intro .large,
.dark .large {
  font-size: clamp(1.45rem, 3vw, 2.15rem);
  line-height: 1.32;
  letter-spacing: -.025em;
}

h2 {
  font-size: clamp(2.4rem, 6vw, 5rem);
  line-height: 1;
  letter-spacing: -.055em;
  margin: 0 0 32px;
}

h3 {
  font-size: 1.35rem;
  margin: 10px 0 10px;
  letter-spacing: -.02em;
}

p { max-width: 720px; }

.grid {
  display: grid;
  gap: 28px;
}

.three { grid-template-columns: repeat(3, 1fr); }

.principles {
  background: #dfe8e2;
  border-top: 1px solid rgba(11,31,34,.09);
  border-bottom: 1px solid rgba(11,31,34,.09);
}

.principles article {
  border-top: 1px solid rgba(11,31,34,.3);
  padding-top: 24px;
}

.number {
  font-size: .8rem;
  letter-spacing: .12em;
  font-weight: 800;
  color: #506b68;
}

.dark {
  background: var(--deep);
  color: var(--white);
}

.dark p { color: #c9dbd8; }

.split {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 70px;
  align-items: start;
}

.gifts { background: var(--sand); }

.gift-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.gift-list span {
  border: 1px solid rgba(11,31,34,.28);
  border-radius: 999px;
  padding: 10px 16px;
  font-weight: 650;
  background: rgba(255,255,255,.2);
}

.manifesto {
  margin-top: 54px;
  font-size: clamp(1.5rem, 3.4vw, 2.6rem);
  line-height: 1.25;
  letter-spacing: -.035em;
  max-width: 850px;
}

.practical-grid {
  grid-template-columns: repeat(2, 1fr);
  margin-top: 42px;
}

.practical-grid > div {
  border-top: 1px solid rgba(11,31,34,.25);
  padding-top: 18px;
}

.notice {
  margin-top: 74px;
  padding: 34px;
  background: var(--deep);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 26px;
  border-radius: 24px;
}

.notice p { color: #c9dbd8; }

footer {
  background: #061d21;
  color: #b7cbc7;
  padding: 30px 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  font-size: .9rem;
}

@media (max-width: 760px) {
  .wrap { width: min(100% - 28px, 1120px); }
  .hero { min-height: 820px; }
  .hero-inner { padding-top: 100px; }
  .depth-lines { width: 18%; opacity: .65; }
  .section { padding: 78px 0; }
  .three, .split, .practical-grid { grid-template-columns: 1fr; }
  .split { gap: 20px; }
  .notice { align-items: flex-start; flex-direction: column; }
  .footer-inner { flex-direction: column; gap: 0; }
  .nav-link { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}