:root {
  color-scheme: light;
  --ink: #17201d;
  --muted: #5d6d66;
  --paper: #fbfaf5;
  --mist: #edf4ef;
  --sea: #0d6b68;
  --sea-dark: #094947;
  --sun: #f2c14e;
  --coral: #dc6f5f;
  --reed: #7f9b6d;
  --line: rgba(23, 32, 29, 0.14);
  --shadow: 0 24px 70px rgba(23, 32, 29, 0.17);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-size: 17px;
  line-height: 1.6;
}

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

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px clamp(18px, 4vw, 56px);
  background: rgba(251, 250, 245, 0.88);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.brand,
.site-header nav,
.hero-actions,
.site-footer {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 800;
  text-decoration: none;
  letter-spacing: 0;
}

.brand img {
  border-radius: 8px;
  box-shadow: 0 8px 22px rgba(9, 73, 71, 0.2);
}

.site-header nav {
  gap: clamp(12px, 3vw, 30px);
  color: var(--muted);
  font-size: 0.92rem;
}

.site-header nav a,
.hero-actions a,
.site-footer a {
  text-decoration: none;
}

.site-header nav a:hover,
.site-footer a:hover {
  color: var(--sea-dark);
}

.hero {
  min-height: 86vh;
  display: grid;
  align-items: end;
  padding: clamp(92px, 12vw, 142px) clamp(22px, 5vw, 72px) clamp(76px, 9vw, 112px);
  color: white;
  background:
    linear-gradient(90deg, rgba(9, 34, 32, 0.92) 0%, rgba(9, 34, 32, 0.74) 42%, rgba(9, 34, 32, 0.22) 100%),
    url("assets/screenshots/watch/spot.png") right 52% center / min(58vw, 620px) auto no-repeat,
    linear-gradient(135deg, #0d6b68 0%, #506f4d 52%, #d09b3d 100%);
}

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

.eyebrow {
  margin: 0 0 10px;
  color: var(--coral);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: var(--sun);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 16px;
  font-size: clamp(4rem, 15vw, 10.8rem);
  line-height: 0.88;
  letter-spacing: 0;
}

h2 {
  max-width: 860px;
  margin-bottom: 18px;
  font-size: clamp(2rem, 4.6vw, 4.6rem);
  line-height: 1;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 8px;
  font-size: 1.22rem;
  line-height: 1.2;
  letter-spacing: 0;
}

.lede {
  max-width: 660px;
  margin-bottom: 28px;
  color: rgba(255, 255, 255, 0.86);
  font-size: clamp(1.12rem, 2.2vw, 1.55rem);
  line-height: 1.42;
}

.hero-actions {
  flex-wrap: wrap;
  gap: 12px;
}

.hero-actions a {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border: 1px solid rgba(255, 255, 255, 0.34);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.13);
  color: white;
  font-weight: 750;
}

.hero-actions a:first-child {
  background: var(--sun);
  color: #1f2414;
  border-color: var(--sun);
}

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

.intro-band div {
  padding: clamp(22px, 4vw, 42px);
  background: var(--mist);
}

.intro-band strong,
.intro-band span {
  display: block;
}

.intro-band strong {
  margin-bottom: 8px;
  color: var(--sea-dark);
  font-size: 1rem;
}

.intro-band span,
.section-copy p,
.section-heading p,
.compatibility p,
article p,
.check-list {
  color: var(--muted);
}

.section {
  padding: clamp(64px, 9vw, 118px) clamp(22px, 5vw, 72px);
}

.section-heading {
  margin-bottom: clamp(30px, 5vw, 52px);
}

.section-heading p {
  max-width: 780px;
  font-size: 1.08rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.feature-grid article {
  min-height: 250px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  box-shadow: 0 12px 32px rgba(23, 32, 29, 0.06);
}

.feature-mark {
  display: inline-block;
  margin-bottom: 28px;
  color: var(--sea);
  font-size: 0.82rem;
  font-weight: 900;
}

.flow-diagram {
  --flow-aspect-ratio: 8 / 3;
  width: min(100%, 1280px);
}

.flow-diagram img {
  width: 100%;
  height: auto;
  aspect-ratio: var(--flow-aspect-ratio);
  object-fit: contain;
  border-radius: 8px;
  background: #fbfaf5;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  image-rendering: auto;
}

.page-hero {
  background: #ffffff;
  border-bottom: 1px solid var(--line);
}

.page-hero h1 {
  color: var(--ink);
  font-size: clamp(3.4rem, 10vw, 7.5rem);
}

.compact-flow {
  width: min(100%, 1280px);
}

.how-to-section {
  background: var(--paper);
}

.how-to-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.how-to-grid article {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  box-shadow: 0 12px 32px rgba(23, 32, 29, 0.06);
}

.how-to-grid h2 {
  margin-bottom: 10px;
  font-size: 1.3rem;
  line-height: 1.2;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(34px, 6vw, 80px);
  align-items: center;
  background: #ffffff;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.split.reverse {
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  background: #f7f2e8;
}

.section-copy p {
  font-size: 1.08rem;
}

.check-list {
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
}

.check-list li {
  position: relative;
  padding-left: 28px;
  margin-bottom: 12px;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--sun);
  box-shadow: inset 0 0 0 3px var(--sea-dark);
}

.phone-row,
.model-gallery,
.settings-grid {
  display: grid;
  gap: 18px;
}

.watch-row {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: end;
}

.iphone-row {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

figure {
  margin: 0;
}

figure img {
  width: 100%;
  border-radius: 8px;
  background: #101615;
  border: 1px solid rgba(23, 32, 29, 0.22);
  box-shadow: var(--shadow);
}

.watch-row figure img,
.model-gallery figure img,
.settings-grid figure img {
  aspect-ratio: 9 / 11;
  object-fit: contain;
  padding: 14px;
}

.iphone-row figure img,
.settings-grid figure:nth-child(2) img {
  aspect-ratio: 9 / 19;
  object-fit: cover;
}

figcaption {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 700;
}

.model-section {
  background: var(--paper);
}

.model-gallery {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.settings-section {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(30px, 5vw, 68px);
  align-items: start;
  background: #eef6f3;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.settings-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.compatibility {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(26px, 5vw, 70px);
  align-items: center;
  background: var(--sea-dark);
  color: white;
}

.compatibility .eyebrow {
  color: var(--sun);
}

.compatibility p {
  color: rgba(255, 255, 255, 0.82);
  font-size: 1.15rem;
}

.site-footer {
  justify-content: space-between;
  gap: 18px;
  padding: 28px clamp(22px, 5vw, 72px);
  color: var(--muted);
  background: white;
}

@media (max-width: 980px) {
  .hero {
    background:
      linear-gradient(180deg, rgba(9, 34, 32, 0.91) 0%, rgba(9, 34, 32, 0.72) 100%),
      url("assets/screenshots/watch/spot.png") right -44px top 74px / 360px auto no-repeat,
      linear-gradient(135deg, #0d6b68 0%, #506f4d 52%, #d09b3d 100%);
  }

  .intro-band,
  .feature-grid,
  .how-to-grid,
  .split,
  .split.reverse,
  .settings-section,
  .compatibility {
    grid-template-columns: 1fr;
  }

  .model-gallery,
  .settings-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  body {
    font-size: 16px;
  }

  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-header nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .hero {
    min-height: 82vh;
    padding-top: 130px;
  }

  h1 {
    font-size: clamp(3.6rem, 24vw, 6rem);
  }

  h2 {
    font-size: clamp(2rem, 12vw, 3rem);
  }

  .watch-row,
  .iphone-row,
  .model-gallery,
  .settings-grid {
    grid-template-columns: 1fr;
  }

  .watch-row figure img,
  .model-gallery figure img,
  .settings-grid figure img,
  .iphone-row figure img,
  .settings-grid figure:nth-child(2) img {
    max-height: 620px;
    object-fit: contain;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}