@font-face {
  font-family: "Antonio";
  src: url("assets/fonts/Antonio.ttf") format("truetype");
  font-weight: 100 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Outfit";
  src: url("assets/fonts/Outfit.ttf") format("truetype");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

:root {
  --navy: #0b2545;
  --navy-deep: #07182e;
  --blue: #1e90ff;
  --blue-deep: #1570cc;
  --foam: #f3f7fb;
  --mist: #d9e4f0;
  --ink: #0b2545;
  --muted: #3d5570;
  --white: #ffffff;
  --max: 1120px;
  --radius: 14px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: "Outfit", "Avenir Next", "Segoe UI", sans-serif;
  font-size: 18px;
  line-height: 1.6;
  font-weight: 400;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue-deep); }
a:hover { color: var(--navy); }

.wrap {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--mist);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 76px;
}
.brand img {
  height: 52px;
  width: auto;
}
.nav {
  display: flex;
  align-items: center;
  gap: 22px;
}
.nav a {
  color: var(--navy);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
}
.nav a:hover { color: var(--blue-deep); }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--blue);
  color: var(--white);
  text-decoration: none;
  font-family: "Outfit", sans-serif;
  font-weight: 600;
  font-size: 1rem;
  line-height: 1;
  padding: 14px 22px;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.15s ease;
}
.btn:hover { background: var(--blue-deep); color: var(--white); }
.btn:active { transform: translateY(1px); }
.btn-navy { background: var(--navy); }
.btn-navy:hover { background: var(--navy-deep); color: var(--white); }
.btn-lg { padding: 18px 28px; font-size: 1.05rem; }

/* Hero */
.hero {
  padding: 56px 0 72px;
  background:
    radial-gradient(1200px 480px at 80% -10%, rgba(30, 144, 255, 0.14), transparent 60%),
    linear-gradient(180deg, #eef5fb 0%, #ffffff 58%);
}
.hero-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
  align-items: center;
}
.hero-logo { width: min(400px, 100%); margin: 0 auto; }
.eyebrow {
  font-family: "Antonio", sans-serif;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--blue-deep);
  font-size: 0.95rem;
  font-weight: 600;
  margin: 0 0 12px;
}
.hero h1, h2, h3 {
  font-family: "Antonio", sans-serif;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 0.95;
  margin: 0 0 16px;
  color: var(--navy);
  text-transform: uppercase;
}
.hero h1 {
  font-size: clamp(3.1rem, 7vw, 5.4rem);
  max-width: 12ch;
}
.lede {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 38em;
  margin: 0 0 22px;
}
.price-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  align-items: baseline;
  margin: 0 0 18px;
}
.price {
  font-family: "Antonio", sans-serif;
  font-size: 3.2rem;
  font-weight: 700;
  color: var(--navy);
  letter-spacing: 0.02em;
  line-height: 1;
}
.price span {
  font-size: 1.15rem;
  color: var(--muted);
  letter-spacing: 0.04em;
  margin-left: 6px;
}
.flags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
}
.flags li {
  background: var(--white);
  border: 1px solid var(--mist);
  color: var(--navy);
  font-size: 0.88rem;
  font-weight: 500;
  padding: 8px 12px;
  border-radius: 999px;
}

/* Sections */
section { padding: 72px 0; }
.section-title {
  font-size: clamp(2.1rem, 4vw, 3.2rem);
  max-width: 16ch;
}
.wave-rule {
  height: 28px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 40' preserveAspectRatio='none'%3E%3Cpath d='M0 22 Q 150 4 300 22 T 600 22 T 900 22 T 1200 22 V40 H0Z' fill='%230B2545'/%3E%3Cpath d='M0 18 Q 150 0 300 18 T 600 18 T 900 18 T 1200 18' fill='none' stroke='%231E90FF' stroke-width='5'/%3E%3C/svg%3E") center / 100% 100% no-repeat;
}
.problem { background: var(--navy); color: var(--white); }
.problem h2, .problem .muted { color: var(--white); }
.problem .muted { opacity: 0.82; }
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px 64px;
  align-items: start;
}
.problem p { margin: 0 0 14px; font-size: 1.12rem; }
.problem p:last-child { margin-bottom: 0; }

/* Kit */
.kit { background: var(--foam); }
.kit-lead { max-width: 40em; margin: 0 0 36px; color: var(--muted); }
.contents {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.card {
  background: var(--white);
  border: 1px solid var(--mist);
  border-radius: var(--radius);
  padding: 22px 22px 20px;
}
.card h3 {
  font-size: 1.35rem;
  margin-bottom: 8px;
}
.card p { margin: 0; color: var(--muted); font-size: 1rem; }
.fit-note {
  margin-top: 28px;
  padding: 20px 22px;
  border-left: 4px solid var(--blue);
  background: var(--white);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.fit-note p { margin: 0; color: var(--muted); }

/* Story */
.story-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 48px;
  align-items: start;
}
.story blockquote {
  margin: 0;
  font-size: 1.35rem;
  line-height: 1.45;
  color: var(--navy);
  font-weight: 500;
}
.story .by {
  margin-top: 16px;
  color: var(--muted);
  font-size: 0.95rem;
}

/* Pre-order */
.preorder {
  background: var(--navy-deep);
  color: var(--white);
}
.preorder-mark {
  height: 72px;
  width: auto;
  margin: 0 0 18px;
  display: block;
}
.preorder h2 { color: var(--white); }
.preorder .lede { color: rgba(255,255,255,0.82); }
.order-box {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 20px;
  padding: 28px;
  max-width: 520px;
}
.order-kicker {
  margin: 0 0 10px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blue);
}
.order-copy {
  margin: 0 0 20px;
  color: rgba(255,255,255,0.82);
}
.order-box .btn {
  display: inline-flex;
  text-align: center;
}
.order-box label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin: 0 0 6px;
}
.order-box input[type="email"],
.order-box input[type="text"] {
  width: 100%;
  border: 1px solid rgba(255,255,255,0.18);
  background: rgba(255,255,255,0.96);
  color: var(--navy);
  border-radius: 10px;
  padding: 12px 14px;
  font: 500 1rem "Outfit", sans-serif;
  margin-bottom: 14px;
}
.order-box input:focus {
  outline: 2px solid var(--blue);
  border-color: transparent;
}
.fine {
  margin: 14px 0 0;
  font-size: 0.88rem;
  color: rgba(255,255,255,0.7);
}
.success {
  display: none;
  margin-top: 14px;
  padding: 14px 16px;
  background: rgba(30,144,255,0.16);
  border: 1px solid rgba(30,144,255,0.45);
  border-radius: 10px;
}
.success.show { display: block; }

/* FAQ */
.faq { background: var(--white); }
details {
  border-bottom: 1px solid var(--mist);
  padding: 16px 0;
}
details:first-of-type { border-top: 1px solid var(--mist); }
summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--navy);
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 16px;
}
summary::-webkit-details-marker { display: none; }
summary::after {
  content: "+";
  color: var(--blue);
  font-size: 1.4rem;
  line-height: 1;
}
details[open] summary::after { content: "–"; }
details p {
  margin: 10px 0 4px;
  color: var(--muted);
}


/* How it works */
.how { background: var(--white); }
.how .kit-lead { max-width: 42em; margin: 0 0 32px; color: var(--muted); }
.diagram-figure {
  margin: 0 0 36px;
  background: var(--foam);
  border: 1px solid var(--mist);
  border-radius: 20px;
  padding: 16px 16px 14px;
}
.diagram-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: 12px;
  background: var(--white);
}
.diagram-scroll img {
  width: 100%;
  max-width: 100%;
  border-radius: 12px;
  background: var(--white);
}
.diagram-figure figcaption {
  margin: 12px 4px 0;
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.45;
}
.swipe-hint { display: none; }
.steps {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px 16px;
  background: var(--foam);
  border: 1px solid var(--mist);
  border-radius: var(--radius);
  padding: 22px 22px 20px;
}
.step-catch {
  background: #eaf4fd;
  border-color: #b7d6f5;
}
.step-num {
  width: 40px;
  height: 40px;
  margin: 0;
  border-radius: 50%;
  background: var(--navy);
  color: var(--white);
  font-family: "Antonio", sans-serif;
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}
.step-catch .step-num { background: var(--blue-deep); }
.step-tag {
  font-family: "Antonio", sans-serif;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue-deep);
  font-size: 0.78rem;
  font-weight: 600;
  margin: 0 0 6px;
}
.step h3 {
  font-size: 1.4rem;
  margin: 0 0 8px;
}
.step p:last-child { margin: 0; color: var(--muted); font-size: 1rem; }
.perks {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 28px;
}
.perk {
  border-top: 4px solid var(--blue);
  padding: 18px 4px 0;
}
.perk h3 {
  font-size: 1.35rem;
  margin-bottom: 8px;
}
.perk p { margin: 0; color: var(--muted); font-size: 1rem; }
footer a { color: var(--white); text-decoration: none; }
footer a:hover { color: #b8d9ff; text-decoration: underline; }

/* Footer */
footer {
  background: var(--navy);
  color: rgba(255,255,255,0.75);
  padding: 36px 0;
  font-size: 0.92rem;
}
footer .wrap {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
}
footer .footer-brand img {
  height: 48px;
  width: auto;
  display: block;
}
footer strong { color: var(--white); font-weight: 600; }

@media (max-width: 860px) {
  .hero-grid, .split, .story-grid, .contents, .steps, .perks { grid-template-columns: 1fr; }
  .hero { padding: 36px 0 56px; }
  .hero-logo { width: min(280px, 82%); }
  .nav .hide-sm { display: none; }
  .contents { grid-template-columns: 1fr; }
  section { padding: 56px 0; }
  .diagram-scroll img {
    max-width: none;
    width: 800px;
  }
  .swipe-hint { display: inline; }
}
@media (max-width: 520px) {
  body { font-size: 17px; }
  .wrap { width: min(var(--max), calc(100% - 28px)); }
  .brand img { height: 44px; }
  .btn { padding: 13px 16px; }
}