:root {
  --green: #58752e;
  --green-deep: #3f5c21;
  --brown: #4b2f1f;
  --wood: #a87942;
  --cream: #fff7e9;
  --paper: #fffaf1;
  --muted: #7d6c59;
  --line: rgba(88, 117, 46, 0.22);
  --shadow: 0 18px 46px rgba(83, 57, 30, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--brown);
  background:
    radial-gradient(circle at 10% 0%, rgba(255, 255, 255, 0.92), transparent 24rem),
    radial-gradient(circle at 90% 10%, rgba(218, 232, 180, 0.42), transparent 26rem),
    linear-gradient(180deg, #fff5e4 0%, var(--cream) 44%, #f4ead7 100%);
  font-family: "Noto Serif JP", serif;
  line-height: 1.9;
  letter-spacing: 0.04em;
  -webkit-font-smoothing: antialiased;
}

img {
  display: block;
  width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  width: min(920px, calc(100% - 24px));
  margin: 0 auto;
  padding: 10px 14px;
  background: rgba(255, 250, 241, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.78);
  border-top: 0;
  border-radius: 0 0 20px 20px;
  box-shadow: 0 12px 28px rgba(83, 57, 30, 0.1);
  backdrop-filter: blur(14px);
}

.brand,
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--brown);
  font-family: "Cormorant Garamond", serif;
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 600;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  color: var(--green);
  border: 1px solid var(--line);
  border-radius: 50%;
  font-family: serif;
  font-size: 17px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--muted);
  font-family: "Noto Sans JP", sans-serif;
  font-size: 12px;
  font-weight: 700;
}

.nav a {
  transition: color 0.18s ease, transform 0.18s ease;
}

.nav a:hover {
  color: var(--green-deep);
  transform: translateY(-1px);
}

.nav-cta,
.line-button,
.floating {
  color: #fff;
  background: linear-gradient(135deg, var(--green), var(--green-deep));
  border-radius: 999px;
  box-shadow: 0 14px 28px rgba(63, 92, 33, 0.24);
}

.nav-cta {
  padding: 8px 15px;
}

main {
  width: min(920px, 100%);
  margin: -1px auto 0;
}

.poster {
  position: relative;
  overflow: hidden;
  background: var(--paper);
  box-shadow: var(--shadow);
}

.poster + .poster,
.intro,
.bridge,
.final-cta {
  margin-top: clamp(16px, 3vw, 30px);
}

.hero {
  border-radius: 0 0 28px 28px;
}

.hotspot {
  position: absolute;
  display: block;
  border-radius: 999px;
  outline-offset: 5px;
  transition: background 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.hotspot:hover,
.hotspot:focus-visible {
  background: rgba(255, 255, 255, 0.16);
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.38);
}

.hotspot:active {
  transform: scale(0.99);
}

.hero-line {
  left: 6.7%;
  bottom: 5.3%;
  width: 86.7%;
  height: 6.55%;
}

.concept-line {
  left: 3.8%;
  bottom: 4.25%;
  width: 69.4%;
  height: 5.05%;
}

.showroom-link {
  left: 11%;
  bottom: 1.8%;
  width: 40%;
  height: 2%;
}

.reason-line {
  left: 6.1%;
  bottom: 4.25%;
  width: 87.8%;
  height: 5.75%;
}

.reason-showroom {
  left: 23%;
  bottom: 1.45%;
  width: 44%;
  height: 2.25%;
}

.showroom-line {
  left: 5.1%;
  bottom: 7.4%;
  width: 89.3%;
  height: 6.2%;
}

.google-map {
  left: 6.4%;
  top: 48.2%;
  width: 34%;
  height: 2.4%;
}

.instagram-link {
  left: 33.5%;
  top: 66.5%;
  width: 36%;
  height: 2.3%;
}

.flow-line {
  left: 25.1%;
  bottom: 24.4%;
  width: 69.3%;
  height: 5.5%;
}

.flow-map {
  right: 3.1%;
  bottom: 7.2%;
  width: 20.7%;
  height: 3%;
}

.intro,
.bridge,
.final-cta {
  width: min(840px, calc(100% - 28px));
  margin-right: auto;
  margin-left: auto;
  padding: clamp(30px, 5vw, 58px);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.76), rgba(255, 247, 232, 0.86)),
    var(--paper);
  border: 1px solid rgba(255, 255, 255, 0.86);
  border-radius: 26px;
  box-shadow: var(--shadow);
}

.intro {
  text-align: center;
}

.kicker {
  margin: 0 0 12px;
  color: var(--green);
  font-family: "Cormorant Garamond", serif;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: lowercase;
}

h1,
.bridge h2,
.final-cta h2 {
  margin: 0;
  color: var(--brown);
  font-weight: 500;
  line-height: 1.42;
}

h1 {
  font-size: clamp(31px, 5.6vw, 58px);
}

.bridge h2,
.final-cta h2 {
  font-size: clamp(28px, 5vw, 48px);
}

.intro p:not(.kicker),
.bridge p,
.final-cta p {
  max-width: 680px;
  margin: 18px auto 0;
  color: var(--muted);
  font-family: "Noto Sans JP", sans-serif;
  font-size: clamp(15px, 2.2vw, 17px);
  font-weight: 500;
}

.bridge {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: clamp(20px, 4vw, 42px);
  align-items: center;
}

.bridge p {
  margin: 0;
}

.final-cta {
  text-align: center;
}

.line-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 58px;
  margin-top: 28px;
  padding: 12px 32px;
  font-family: "Noto Serif JP", serif;
  font-size: clamp(17px, 3vw, 24px);
  font-weight: 600;
}

.footer {
  width: min(920px, 100%);
  margin: clamp(16px, 3vw, 30px) auto 0;
  padding: 42px 24px 34px;
  color: #f4ead7;
  text-align: center;
  background: var(--brown);
}

.footer-brand {
  justify-content: center;
  margin: 0 0 8px;
  color: #fff;
}

.footer p {
  margin: 0 0 12px;
}

.footer small {
  color: rgba(255, 255, 255, 0.58);
}

.floating {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 30;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 10px 18px;
  font-family: "Noto Sans JP", sans-serif;
  font-size: 14px;
  font-weight: 800;
}

@media (max-width: 760px) {
  .site-header {
    width: 100%;
    border-radius: 0;
    padding: 10px 12px;
  }

  .nav a:not(.nav-cta) {
    display: none;
  }

  .poster {
    width: calc(100% - 14px);
    margin-right: auto;
    margin-left: auto;
    border-radius: 18px;
  }

  .hero {
    width: 100%;
    border-radius: 0 0 18px 18px;
  }

  .bridge {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .brand {
    font-size: 24px;
  }

  .nav-cta {
    padding: 7px 12px;
    font-size: 12px;
  }

  .intro,
  .bridge,
  .final-cta {
    width: calc(100% - 20px);
    padding: 26px 18px;
    border-radius: 20px;
  }

  .line-button {
    width: 100%;
    padding: 12px 18px;
  }

  .floating {
    right: 10px;
    bottom: 10px;
    min-height: 44px;
    padding: 8px 14px;
    font-size: 13px;
  }
}

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

  .nav a,
  .hotspot {
    transition: none;
  }
}