:root {
  --ink: #182729;
  --deep: #102021;
  --pine: #294744;
  --paper: #f4f0e8;
  --warm: #b78b52;
  --muted: #687572;
  --line: rgba(24, 39, 41, 0.16);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  line-height: 1.8;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { display: block; width: 100%; }
.container { width: min(1160px, calc(100% - 48px)); margin: 0 auto; }
.intro-grid > *, .onsen-grid > *, .dining-grid > *, .access-grid > * { min-width: 0; }
p, h1, h2, h3 { overflow-wrap: anywhere; }
header {
  position: absolute;
  inset: 0 0 auto;
  z-index: 2;
  color: white;
  border-bottom: 1px solid rgba(255, 255, 255, 0.24);
}
.nav { display: flex; align-items: center; justify-content: space-between; min-height: 82px; }
.brand { display: flex; align-items: center; gap: 12px; letter-spacing: 0.18em; font-size: 1.15rem; }
.brand-mark {
  width: 80px;
  height: 80px;
  display: block;
  object-fit: contain;
  flex-shrink: 0;
}
.nav-links { display: flex; gap: 30px; font-size: 0.8rem; letter-spacing: 0.12em; }
.nav-links a { opacity: 0.86; transition: opacity 0.2s ease; }
.nav-links a:hover { opacity: 1; color: #e1be82; }
.reserve-link { padding: 10px 18px; border: 1px solid rgba(225, 190, 130, 0.85); font-size: 0.78rem; letter-spacing: 0.14em; }
.hero {
  min-height: 760px;
  position: relative;
  display: grid;
  align-items: end;
  color: white;
  overflow: hidden;
}
.hero-background {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-position: center;
  background-size: cover;
  transition: opacity 2s ease-in-out;
}
.hero-background.current { opacity: 1; }
.hero-background.next { opacity: 0; }
.hero-background::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(8, 20, 21, 0.78) 0%, rgba(8, 20, 21, 0.2) 65%);
}
.hero::after { content: ""; position: absolute; inset: auto 0 0; height: 32%; background: linear-gradient(transparent, rgba(8, 20, 21, 0.72)); }
.hero-content { position: relative; z-index: 1; padding: 0 0 78px; max-width: 650px; }
.kicker { color: #dfbd82; font-size: 0.78rem; letter-spacing: 0.28em; }
h1 {
  position: relative;
  display: inline-block;
  margin: 14px 0 22px;
  font-size: clamp(3.2rem, 7vw, 6.8rem);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: 0.18em;
  font-family: "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", serif;
  color: rgba(255, 255, 255, 0.96);
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.16), 0 14px 30px rgba(10, 19, 20, 0.18);
}
h1::after {
  content: "";
  position: absolute;
  left: 8%;
  right: 8%;
  bottom: -12px;
  height: 1px;
  background: linear-gradient(90deg, rgba(255,255,255,0) 0%, rgba(255,255,255,0.8) 18%, rgba(255,255,255,0.8) 82%, rgba(255,255,255,0) 100%);
}
.hero-copy { max-width: 480px; margin: 0 0 30px; color: rgba(255, 255, 255, 0.84); font-size: 0.98rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.hero-caption {
  min-height: 1.8em;
  margin: 0 0 18px;
  color: rgba(255, 255, 255, 0.86);
  font-size: 1.4rem;
  letter-spacing: 0.12em;
}
.button { display: inline-flex; align-items: center; gap: 18px; min-height: 50px; padding: 0 22px; border: 1px solid rgba(225, 190, 130, 0.9); font-size: 0.8rem; letter-spacing: 0.14em; transition: background 0.25s, color 0.25s; }
.button:hover { background: var(--warm); color: var(--deep); }
.button.solid { background: var(--warm); color: var(--deep); }
.intro { padding: 106px 0 112px; background: var(--paper); }
.intro-grid { display: grid; grid-template-columns: 1fr 1.3fr; gap: 90px; align-items: start; }
.intro-title {
  position: relative;
  min-height: 440px;
  padding: 46px 38px;
  overflow: hidden;
  color: white;
  background: linear-gradient(rgba(16, 32, 33, 0.52), rgba(16, 32, 33, 0.7)), url("images/yukiakariyuki.jpg") center/cover;
}
.intro-title .vertical-label { position: relative; z-index: 1; }
.intro-title h2 { position: relative; z-index: 1; }
.vertical-label { color: var(--warm); writing-mode: vertical-rl; letter-spacing: 0.3em; font-size: 0.76rem; }
h2 { margin: 0; font-size: clamp(2rem, 4vw, 3.4rem); font-weight: 400; letter-spacing: 0.1em; line-height: 1.45; }
.intro h2 { margin-top: 12px; }
.intro-text { max-width: 590px; color: #566560; font-size: 1rem; }
.intro-text p { margin: 0 0 20px; }
.signature { display: inline-block; margin-top: 15px; color: var(--pine); letter-spacing: 0.2em; font-size: 0.8rem; }
.dark-section { padding: 98px 0; color: white; background: var(--deep); }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: 42px; }
.section-heading p { margin: 0; color: #aebcb5; font-size: 0.85rem; letter-spacing: 0.08em; }
.stays { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.stay { min-width: 0; border-top: 1px solid rgba(225, 190, 130, 0.55); }
.stay img { height: 220px; object-fit: cover; filter: saturate(0.78); }
.stay-body { padding: 14px 2px 0; }
.stay-index { color: #d4ad70; font-size: 0.7rem; letter-spacing: 0.12em; }
.stay h3 { margin: 5px 0 3px; font-weight: 400; font-size: 1.05rem; letter-spacing: 0.08em; }
.stay p { margin: 0; color: #aebcb5; font-size: 0.78rem; }
.season-section { position: relative; min-height: 620px; }
.season-section.dark-section { background: linear-gradient(rgba(6, 20, 19, 0.72), rgba(6, 20, 19, 0.84)), url("https://images.unsplash.com/photo-1500534623283-312aade485b7?auto=format&fit=crop&w=1800&q=85") center/cover; }
.season-selector { display: flex; justify-content: center; gap: clamp(28px, 8vw, 110px); padding: 52px 0 0; }
.season-button { display: inline-block; position: relative; z-index: 1; padding: 0; border: 0; color: rgba(255, 255, 255, 0.72); background: transparent; cursor: pointer; font: inherit; font-size: 50px; line-height: 1; transition: color 0.25s, transform 0.25s; }
.season-button:hover, .season-button.active { transform: translateY(-4px); }
.season-button[data-season="spring"]:hover, .season-button[data-season="spring"].active { color: #e9a8a1; transform: translateY(-4px) scale(1.06); }
.season-button[data-season="spring"]:hover { animation: spring-button-float 0.8s ease-in-out infinite alternate; }
.season-button[data-season="summer"]:hover, .season-button[data-season="summer"].active { color: #a8cf8d; }
.season-button[data-season="autumn"]:hover, .season-button[data-season="autumn"].active { color: #e2a15b; }
.season-button[data-season="winter"]:hover, .season-button[data-season="winter"].active { color: #b8dff0; }
.season-stage { position: absolute; inset: 0; z-index: 2; display: none; overflow: hidden; background: var(--deep); }
.season-stage.open { display: block; }
.season-slide { position: absolute; inset: 0; background-position: center; background-size: cover; opacity: 0; transform: scale(1.04); transition: opacity 1.6s ease, transform 5s ease; }
.season-slide.active { opacity: 1; transform: scale(1); }
.season-slide::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(10, 25, 26, 0.7), rgba(10, 25, 26, 0.12)); }
.season-slide-copy { position: absolute; left: clamp(24px, 8vw, 110px); bottom: 70px; z-index: 1; color: white; }
.season-slide-copy strong { display: block; color: var(--warm); font-size: 0.8rem; letter-spacing: 0.2em; }
.season-slide-copy span { display: block; margin-top: 8px; font-size: clamp(1.5rem, 3vw, 2.8rem); letter-spacing: 0.12em; }
.season-close { position: absolute; top: 22px; right: 24px; z-index: 3; padding: 6px 12px; border: 1px solid rgba(255, 255, 255, 0.65); color: white; background: rgba(16, 32, 33, 0.35); cursor: pointer; font: inherit; font-size: 0.72rem; letter-spacing: 0.1em; }
@keyframes spring-button-float {
  from { transform: translateY(-4px) scale(1.06); }
  to { transform: translateY(-12px) scale(1.12); }
}
.onsen { padding: 112px 0; }
.onsen-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 70px; align-items: center; }
.onsen-image { position: relative; min-height: 500px; overflow: hidden; }

.onsen-image::after {
  content: "";
  position: absolute;
  inset: -10% -5%;
   background:
    radial-gradient(circle at 25% 18%, rgba(255,255,255,0.38), transparent 16%),
    radial-gradient(circle at 45% 26%, rgba(255,255,255,0.28), transparent 20%),
    radial-gradient(circle at 68% 16%, rgba(255,255,255,0.22), transparent 18%),
    linear-gradient(180deg, transparent 0%, rgba(255,255,255,0.18) 30%, rgba(255,255,255,0.04) 60%, transparent 100%);
  opacity: 0;
  pointer-events: none;
  mix-blend-mode: screen;
}
.onsen-image.is-steaming::after {
  animation: onsenSteam 1.5s ease-out;
}
@keyframes onsenSteam {
  0% { opacity: 0; transform: translateY(18px) scale(1); filter: blur(0); }
  25% { opacity: 0.32; filter: blur(6px); }
  65% { opacity: 0.2; filter: blur(14px); }
  100% { opacity: 0; transform: translateY(-18px) scale(1.08); filter: blur(20px); }
}
.onsen-image .onsen-slide-image { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; filter: blur(6px) brightness(0.88) saturate(0.7); transform: scale(1.06); transition: opacity 1.5s ease, transform 2.4s ease, filter 1.5s ease; }
.onsen-image .onsen-slide-image.active { opacity: 1; filter: blur(0) brightness(1) saturate(1); transform: scale(1); }
.onsen-image .onsen-slide-image.fading {
  opacity: 0;
  filter: blur(18px) brightness(1.18) saturate(0.5);
  transform: scale(1.12) translateY(-12px);
}
.onsen-copy p { color: var(--muted); font-size: 0.95rem; }
.fact-list { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line); margin-top: 30px; }
.fact { padding: 14px 5px; border-bottom: 1px solid var(--line); font-size: 0.84rem; }
.fact strong { display: block; color: var(--warm); font-size: 0.7rem; font-weight: 400; letter-spacing: 0.14em; }
.dining { padding: 104px 0; background: #e7e0d4; }
.dining-grid { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 74px; align-items: center; }
.dining-copy { min-width: 0; }
.dining-copy p { color: var(--muted); font-size: 0.94rem; }
.dining-slide-copy { transition: opacity 0.8s ease, transform 0.8s ease; }
.dining-slide-copy.is-changing { opacity: 0; transform: translateY(8px); }
.dining-slide-copy h2 { margin-bottom: 24px; }
.dining-slide-copy p { white-space: pre-line; }
.dining-image { position: relative; min-height: 440px; overflow: hidden; }
.dining-slide-image { position: absolute; inset: 0; height: 100%; object-fit: cover; opacity: 0; transform: scale(1.04); transition: opacity 1.2s ease, transform 4s ease; }
.dining-slide-image.active { opacity: 1; transform: scale(1); }
.dining-image::after { content: ""; position: absolute; inset: 0; pointer-events: none; border: 1px solid rgba(183, 139, 82, 0.65); }
.menu-note { margin-top: 28px; padding-top: 18px; border-top: 1px solid var(--line); font-size: 0.79rem; letter-spacing: 0.08em; }
.access { padding: 100px 0 110px; background: var(--paper); }
.access-grid { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(240px, 0.8fr); gap: 40px; align-items: start; }
.access-info-block { min-width: 0; }
.access-info { margin-top: 26px; color: var(--muted); font-size: 0.9rem; overflow-wrap: anywhere; }
.access-table { width: 100%; border-collapse: collapse; table-layout: fixed; }
.access-table th,
.access-table td { padding: 12px 0; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
.access-table th {
  width: 88px;
  color: var(--ink);
  font-weight: 400;
  letter-spacing: 0.08em;
}
.access-table td { color: var(--muted); line-height: 1.8; }
.reservation-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; margin-top: 24px; }
.reservation-actions .button,
.banner-link,
.reservation-banner,
.instagram-banner { width: 200px; height: 50px; }
.banner-link { display: inline-flex; align-items: center; justify-content: center; }
.reservation-banner,
.instagram-banner { object-fit: contain; border: 1px solid var(--warm); background: white; display: block; }
.access-side { position: relative; min-height: 460px; overflow: hidden; }
.access-side::after { content: ""; position: absolute; inset: 0; pointer-events: none; border: 1px solid rgba(183, 139, 82, 0.65); }
.access-side-image { width: 100%; height: 100%; object-fit: cover; display: block; }
footer { padding: 26px 0; color: #aebcb5; background: var(--deep); font-size: 0.72rem; letter-spacing: 0.12em; }
.footer-inner { display: flex; justify-content: space-between; gap: 20px; }
@media (max-width:800px) {
  .container { width:min(100% - 32px,600px); }
  .nav { min-height:68px; }
  .nav-links { display:none; }
  .hero { min-height:680px; }
  .hero-content { padding-bottom:48px; }
  .intro-grid,.onsen-grid,.dining-grid,.access-grid { grid-template-columns:1fr; gap:38px; }
  .intro { padding:76px 0; }
  .vertical-label { writing-mode:initial; }
  .dark-section,.onsen,.dining,.access { padding:76px 0; }
  .section-heading { display:block; }
  .section-heading p { margin-top:14px; }
  .stays { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
  .stay img { height: 180px; }
  .season-selector { gap: 22px; }
  .onsen-image img { height:360px; }
  .dining-image { order:-1; }
  .dining-image { min-height: 300px; }
  .footer-inner { display:block; }
  .footer-inner span { display:block; margin-top:6px; }
}