:root {
  color-scheme: light;
  --ink: #182326;
  --muted: #5d696b;
  --paper: #fffdfb;
  --soft: #fff3f0;
  --sea: #137d80;
  --sea-deep: #07585b;
  --coral: #ef684f;
  --yellow: #f5c14b;
  --line: #dce5e2;
  --shadow: 0 18px 50px rgba(24, 35, 38, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--paper);
  color: var(--ink);
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  letter-spacing: 0;
}

button,
a {
  font: inherit;
}

button {
  cursor: pointer;
}

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

.site-header {
  position: absolute;
  z-index: 10;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px clamp(20px, 5vw, 72px);
  color: #fff;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: inherit;
  font-size: 20px;
  font-weight: 750;
  text-decoration: none;
  flex: 0 0 auto;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 50%;
  background: rgba(7, 88, 91, 0.72);
}

.header-action,
.primary-action,
.text-action {
  border: 0;
}

.header-action {
  flex: 0 0 auto;
  padding: 10px 16px;
  border: 1px solid rgba(255, 255, 255, 0.75);
  border-radius: 6px;
  background: rgba(7, 88, 91, 0.66);
  color: #fff;
}

.mobile-label {
  display: none;
}

.hero {
  position: relative;
  min-height: 82vh;
  overflow: hidden;
  background: url("assets/map.jpg") center 43% / cover no-repeat;
  color: #fff;
}

.hero-shade {
  position: absolute;
  inset: 0;
  background: rgba(5, 41, 43, 0.48);
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding-top: clamp(150px, 24vh, 230px);
}

.eyebrow {
  margin: 0 0 16px;
  color: rgba(255, 255, 255, 0.86);
  font-size: 13px;
  font-weight: 750;
  letter-spacing: 0;
  text-transform: uppercase;
}

.eyebrow.dark {
  color: var(--sea);
}

h1,
h2,
h3,
p {
  overflow-wrap: break-word;
}

h1 {
  margin: 0;
  font-size: clamp(72px, 12vw, 150px);
  line-height: 0.94;
  letter-spacing: 0;
  text-shadow: 0 3px 24px rgba(0, 0, 0, 0.28);
}

.hero-copy {
  max-width: 620px;
  margin: 24px 0 32px;
  font-size: clamp(22px, 3vw, 36px);
  line-height: 1.42;
  text-shadow: 0 2px 14px rgba(0, 0, 0, 0.3);
}

.primary-action {
  min-height: 48px;
  padding: 13px 22px;
  border-radius: 6px;
  background: var(--yellow);
  color: #172426;
  font-weight: 750;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.16);
}

.primary-action.coral {
  background: var(--coral);
  color: #fff;
}

.primary-action:hover,
.header-action:hover,
.text-action:hover {
  filter: brightness(0.96);
}

.scroll-cue {
  position: absolute;
  z-index: 1;
  right: clamp(20px, 5vw, 72px);
  bottom: 28px;
  color: #fff;
  font-size: 14px;
  text-decoration: none;
}

.section-inner {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.experience-band {
  padding: clamp(66px, 9vw, 112px) 0;
  background: var(--soft);
}

.experience-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
  gap: clamp(48px, 8vw, 110px);
  align-items: center;
}

h2 {
  margin: 0;
  font-size: clamp(34px, 5vw, 64px);
  line-height: 1.12;
  letter-spacing: 0;
}

.experience-copy > p:not(.eyebrow) {
  max-width: 650px;
  margin: 24px 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.8;
}

.name-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
  align-items: center;
  color: var(--sea-deep);
  font-weight: 700;
}

.text-action {
  padding: 8px 12px;
  border-radius: 5px;
  background: #fff;
  color: var(--sea-deep);
  box-shadow: inset 0 0 0 1px var(--line);
}

.qr-figure {
  margin: 0;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.qr-figure img {
  width: 100%;
  aspect-ratio: 1;
}

.qr-figure figcaption {
  padding: 14px 4px 2px;
  color: var(--muted);
  text-align: center;
}

.features {
  padding: clamp(76px, 10vw, 130px) 0;
}

.section-heading {
  max-width: 850px;
  margin-bottom: 54px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}

.feature-card {
  display: grid;
  grid-template-columns: minmax(150px, 0.78fr) minmax(0, 1fr);
  min-height: 420px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.screenshot-frame {
  min-width: 0;
  overflow: hidden;
  background: #eff8f6;
}

.screenshot-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transition: transform 240ms ease;
}

.feature-card:hover .screenshot-frame img {
  transform: scale(1.025);
}

.feature-copy {
  align-self: center;
  padding: 32px;
}

.feature-number {
  color: var(--coral);
  font-size: 13px;
  font-weight: 800;
}

.feature-copy h3 {
  margin: 12px 0;
  font-size: 27px;
  letter-spacing: 0;
}

.feature-copy p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.closing-band {
  padding: 76px 0;
  border-top: 1px solid var(--line);
  background: #edf8f5;
}

.closing-layout {
  display: flex;
  gap: 36px;
  align-items: center;
  justify-content: space-between;
}

.closing-layout h2 {
  max-width: 800px;
  font-size: clamp(32px, 4.4vw, 58px);
}

footer {
  display: flex;
  justify-content: space-between;
  padding: 28px clamp(20px, 5vw, 72px);
  background: var(--ink);
  color: rgba(255, 255, 255, 0.78);
  font-size: 14px;
}

.qr-dialog {
  width: min(430px, calc(100% - 32px));
  padding: 30px;
  border: 0;
  border-radius: 8px;
  color: var(--ink);
  text-align: center;
  box-shadow: var(--shadow);
}

.qr-dialog::backdrop {
  background: rgba(11, 25, 27, 0.68);
}

.qr-dialog h2 {
  font-size: 30px;
}

.qr-dialog img {
  width: min(100%, 340px);
  margin: 20px auto 12px;
  aspect-ratio: 1;
}

.qr-dialog > p:last-child {
  margin: 0;
  color: var(--muted);
}

.close-button {
  position: absolute;
  top: 12px;
  right: 12px;
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: #eef2f1;
  color: var(--ink);
  font-size: 26px;
  line-height: 1;
}

button:focus-visible,
a:focus-visible {
  outline: 3px solid var(--yellow);
  outline-offset: 3px;
}

@media (max-width: 820px) {
  .hero {
    min-height: 78vh;
    background-position: 46% top;
  }

  .hero-shade {
    background: rgba(5, 41, 43, 0.56);
  }

  .experience-layout,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .experience-copy {
    text-align: center;
  }

  .experience-copy > p:not(.eyebrow) {
    margin-right: auto;
    margin-left: auto;
  }

  .name-row {
    justify-content: center;
  }

  .qr-figure {
    width: min(100%, 420px);
    margin: 0 auto;
  }
}

@media (max-width: 560px) {
  .site-header {
    padding: 16px 18px;
  }

  .brand {
    font-size: 18px;
  }

  .brand-mark {
    width: 34px;
    height: 34px;
  }

  .header-action {
    padding: 9px 11px;
    font-size: 14px;
  }

  .desktop-label {
    display: none;
  }

  .mobile-label {
    display: inline;
  }

  .hero-content {
    width: calc(100% - 36px);
    padding-top: 148px;
  }

  h1 {
    font-size: 72px;
  }

  .hero-copy {
    max-width: 280px;
    font-size: 24px;
  }

  .scroll-cue {
    right: 18px;
  }

  .section-inner {
    width: calc(100% - 32px);
  }

  .experience-band {
    padding: 64px 0;
  }

  h2 {
    font-size: 37px;
  }

  .experience-copy > p:not(.eyebrow) {
    font-size: 16px;
  }

  .features {
    padding: 72px 0;
  }

  .section-heading {
    margin-bottom: 34px;
  }

  .feature-card {
    grid-template-columns: minmax(126px, 0.7fr) minmax(0, 1fr);
    min-height: 350px;
  }

  .feature-copy {
    padding: 22px 18px;
  }

  .feature-copy h3 {
    font-size: 22px;
  }

  .feature-copy p {
    font-size: 14px;
  }

  .closing-layout {
    align-items: flex-start;
    flex-direction: column;
  }

  footer {
    gap: 8px;
    flex-direction: column;
  }
}

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

  .screenshot-frame img {
    transition: none;
  }
}