/* ==========================================================================
   浜名湖うなぎ — style.css
   ========================================================================== */

:root {
  --ink: #0b1e21;
  --ink-2: #10292d;
  --paper: #f6f1e6;
  --paper-deep: #efe8d8;
  --tint: #f1ebdd;
  --quiet: #ebe2d0;
  --gold: #c9a35b;
  --gold-light: #e4c98f;
  --gold-deep: #9a7b43;
  --vermilion: #c2543f;
  --text: #23302f;
  --muted: #66716d;
  --line: rgba(35, 48, 47, 0.13);
  --line-gold: rgba(201, 163, 91, 0.32);
  --serif: "Shippori Mincho B1", "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", serif;
  --sans: "Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", "Meiryo", sans-serif;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --container: 1220px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.9;
  letter-spacing: 0.02em;
  color: var(--text);
  background: var(--paper);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.menu-open {
  overflow: hidden;
}

h1, h2, h3, h4, p, figure, dl, dd {
  margin: 0;
}

ul, ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

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

button {
  font: inherit;
  color: inherit;
}

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

::selection {
  background: var(--gold);
  color: #0d1f22;
}

:focus-visible {
  outline: 2px solid var(--gold-deep);
  outline-offset: 4px;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(22px, 5vw, 56px);
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 300;
  padding: 10px 18px;
  background: var(--gold);
  color: #102427;
  font-size: 12px;
  transform: translateY(-220%);
  transition: transform 0.25s;
}
.skip-link:focus {
  transform: translateY(0);
}

/* Scroll progress */
.progress {
  position: fixed;
  inset: 0 0 auto 0;
  height: 2px;
  z-index: 130;
  pointer-events: none;
}
.progress__bar {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--gold-deep), var(--gold-light));
  transform: scaleX(0);
  transform-origin: left center;
}

/* ==========================================================================
   Header
   ========================================================================== */
.header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: linear-gradient(180deg, rgba(4, 13, 16, 0.6), rgba(4, 13, 16, 0));
  border-bottom: 1px solid transparent;
  transition: background 0.4s ease, border-color 0.4s ease, backdrop-filter 0.4s ease;
}
.header.is-scrolled {
  background: rgba(6, 18, 21, 0.88);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  border-bottom-color: rgba(201, 163, 91, 0.16);
}
body.menu-open .header {
  background: transparent;
  border-bottom-color: transparent;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  height: 90px;
  max-width: 1320px;
  margin-inline: auto;
  padding-inline: clamp(20px, 4.5vw, 56px);
  transition: height 0.4s ease;
}
.header.is-scrolled .header__inner {
  height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--gold-light);
  flex: none;
}
.brand__mark {
  width: 34px;
  height: 34px;
  flex: none;
}
.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.brand__jp {
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--paper);
}
.brand__en {
  margin-top: 4px;
  font-size: 7.5px;
  font-weight: 500;
  letter-spacing: 0.34em;
  color: var(--gold);
}

.nav ul {
  display: flex;
  align-items: center;
  gap: clamp(16px, 2.1vw, 32px);
}
.nav a {
  position: relative;
  display: inline-block;
  padding: 6px 0;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: rgba(246, 241, 230, 0.8);
  transition: color 0.3s;
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: right center;
  transition: transform 0.35s var(--ease);
}
.nav a:hover,
.nav a.is-active {
  color: var(--gold-light);
}
.nav a:hover::after,
.nav a.is-active::after {
  transform: scaleX(1);
  transform-origin: left center;
}

.header__cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: none;
  padding: 10px 18px;
  border: 1px solid rgba(201, 163, 91, 0.38);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gold-light);
  transition: background 0.3s, color 0.3s, border-color 0.3s;
}
.header__cta svg {
  width: 13px;
  height: 13px;
  transition: transform 0.3s;
}
.header__cta:hover {
  background: var(--gold);
  border-color: var(--gold);
  color: #102427;
}
.header__cta:hover svg {
  transform: translateX(3px);
}

.menu-btn {
  display: none;
  flex-direction: column;
  background: rgba(6, 18, 21, 0.38);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid rgba(201, 163, 91, 0.38);
  cursor: pointer;
  flex: none;
}
.menu-btn span {
  display: block;
  width: 19px;
  height: 1px;
  background: var(--paper);
  transition: transform 0.4s var(--ease);
}

/* Mobile menu */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 110px clamp(24px, 7vw, 48px) 56px;
  background: #0a1b1e;
  transform: translateY(-100%);
  visibility: hidden;
  transition: transform 0.65s cubic-bezier(0.76, 0, 0.24, 1), visibility 0.65s;
}
.mobile-menu::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='88' height='44' viewBox='0 0 88 44'%3E%3Cg fill='none' stroke='%23c9a35b' stroke-width='1'%3E%3Ccircle cx='44' cy='44' r='40'/%3E%3Ccircle cx='44' cy='44' r='29'/%3E%3Ccircle cx='44' cy='44' r='18'/%3E%3Ccircle cx='44' cy='44' r='7'/%3E%3Ccircle cx='0' cy='22' r='40'/%3E%3Ccircle cx='0' cy='22' r='29'/%3E%3Ccircle cx='0' cy='22' r='18'/%3E%3Ccircle cx='0' cy='22' r='7'/%3E%3Ccircle cx='88' cy='22' r='40'/%3E%3Ccircle cx='88' cy='22' r='29'/%3E%3Ccircle cx='88' cy='22' r='18'/%3E%3Ccircle cx='88' cy='22' r='7'/%3E%3Ccircle cx='44' cy='0' r='40'/%3E%3Ccircle cx='44' cy='0' r='29'/%3E%3Ccircle cx='44' cy='0' r='18'/%3E%3Ccircle cx='44' cy='0' r='7'/%3E%3C/g%3E%3C/svg%3E");
  background-size: 88px 44px;
  opacity: 0.05;
  pointer-events: none;
}
body.menu-open .mobile-menu {
  transform: none;
  visibility: visible;
}
.mobile-menu nav {
  position: relative;
  z-index: 1;
}
.mobile-menu li {
  border-bottom: 1px solid rgba(201, 163, 91, 0.14);
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.5s ease, transform 0.5s var(--ease);
}
body.menu-open .mobile-menu li {
  opacity: 1;
  transform: none;
}
body.menu-open .mobile-menu li:nth-child(1) { transition-delay: 0.12s; }
body.menu-open .mobile-menu li:nth-child(2) { transition-delay: 0.17s; }
body.menu-open .mobile-menu li:nth-child(3) { transition-delay: 0.22s; }
body.menu-open .mobile-menu li:nth-child(4) { transition-delay: 0.27s; }
body.menu-open .mobile-menu li:nth-child(5) { transition-delay: 0.32s; }
body.menu-open .mobile-menu li:nth-child(6) { transition-delay: 0.37s; }
.mobile-menu a {
  display: flex;
  align-items: baseline;
  gap: 18px;
  padding: 18px 0;
  font-family: var(--serif);
  font-size: clamp(1.25rem, 5vw, 1.65rem);
  letter-spacing: 0.08em;
  color: var(--paper);
}
.mobile-menu a span {
  font-family: var(--sans);
  font-size: 9.5px;
  letter-spacing: 0.22em;
  color: var(--gold);
}
.mobile-menu__foot {
  position: absolute;
  left: clamp(24px, 7vw, 48px);
  bottom: 30px;
  font-size: 9px;
  letter-spacing: 0.28em;
  color: rgba(246, 241, 230, 0.35);
}
body.menu-open .menu-btn span:first-child {
  transform: translateY(3.5px) rotate(45deg);
}
body.menu-open .menu-btn span:last-child {
  transform: translateY(-3.5px) rotate(-45deg);
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 100svh;
  overflow: hidden;
  background: #081519;
  color: var(--paper);
  isolation: isolate;
}
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
}
.hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(4, 13, 16, 0.8) 0%, rgba(4, 13, 16, 0.46) 46%, rgba(4, 13, 16, 0.08) 78%),
    linear-gradient(0deg, rgba(4, 13, 16, 0.55) 0%, rgba(4, 13, 16, 0) 38%);
}
.hero__svg {
  width: 100%;
  height: 100%;
  transition: transform 0.9s cubic-bezier(0.2, 0.7, 0.2, 1);
  will-change: transform;
}
.hero__grain {
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0.32;
  mix-blend-mode: overlay;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E");
}

.hero__inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex: 1;
  align-items: center;
  width: 100%;
  padding-top: 150px;
  padding-bottom: 48px;
}
.hero__copy {
  max-width: 1040px;
}
.hero__eyebrow {
  display: flex;
  align-items: center;
  gap: 13px;
  margin-bottom: clamp(20px, 3vw, 34px);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.28em;
  color: var(--gold-light);
  text-shadow: 0 2px 16px rgba(4, 13, 16, 0.85);
}
.hero__rule {
  width: 44px;
  height: 1px;
  background: currentColor;
  opacity: 0.65;
}
.hero__slash {
  opacity: 0.4;
}
.hero__title-row {
  display: flex;
  align-items: flex-end;
  gap: clamp(16px, 2.6vw, 34px);
  flex-wrap: wrap;
}
.hero__title {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  font-family: var(--serif);
  font-size: clamp(3.2rem, 9.4vw, 8.4rem);
  font-weight: 600;
  line-height: 1.06;
  letter-spacing: 0.02em;
  margin: 0;
  text-shadow: 0 24px 70px rgba(0, 0, 0, 0.35);
}
.hero__title span {
  display: inline-block;
}
.hero__title .is-gold {
  background: linear-gradient(115deg, #f5e7c4 0%, #dcc088 36%, #b58f4c 66%, #edd9aa 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 10px 34px rgba(201, 163, 91, 0.18));
}
.seal {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 62px;
  height: 62px;
  margin-bottom: clamp(12px, 1.6vw, 20px);
  border: 1.5px solid rgba(194, 84, 63, 0.85);
  color: #d4674f;
  font-family: var(--serif);
  font-size: 11px;
  line-height: 1.5;
  letter-spacing: 0.18em;
  writing-mode: vertical-rl;
  transform: rotate(-5deg);
  opacity: 0.92;
}
.hero__lead {
  margin-top: clamp(22px, 3.2vw, 36px);
  font-size: clamp(14px, 1.5vw, 17px);
  font-weight: 300;
  line-height: 2.2;
  letter-spacing: 0.06em;
  color: rgba(246, 241, 230, 0.82);
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: clamp(28px, 4vw, 44px);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 17px 30px;
  border: 1px solid transparent;
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.14em;
  transition: background 0.35s, color 0.35s, border-color 0.35s;
}
.btn svg {
  width: 15px;
  height: 15px;
  transition: transform 0.35s var(--ease);
}
.btn:hover svg {
  transform: translateX(4px);
}
.btn--gold {
  background: var(--gold);
  border-color: var(--gold);
  color: #112528;
}
.btn--gold:hover {
  background: var(--gold-light);
  border-color: var(--gold-light);
}
.btn--ghost {
  border-color: rgba(246, 241, 230, 0.34);
  color: var(--paper);
}
.btn--ghost:hover {
  border-color: var(--gold-light);
  background: rgba(201, 163, 91, 0.08);
  color: var(--gold-light);
}

.hero__vertical {
  position: absolute;
  top: 50%;
  right: clamp(20px, 5vw, 56px);
  transform: translateY(-50%);
  writing-mode: vertical-rl;
  font-family: var(--serif);
  font-size: 12px;
  letter-spacing: 0.42em;
  color: rgba(246, 241, 230, 0.48);
}
.hero__scroll {
  position: absolute;
  right: clamp(20px, 5vw, 56px);
  bottom: 128px;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  font-size: 9px;
  letter-spacing: 0.28em;
  color: rgba(246, 241, 230, 0.45);
}
.hero__scroll i {
  position: relative;
  display: block;
  width: 1px;
  height: 56px;
  overflow: hidden;
  background: linear-gradient(to bottom, rgba(201, 163, 91, 0.7), rgba(201, 163, 91, 0));
}
.hero__scroll i::after {
  content: "";
  position: absolute;
  top: -20px;
  left: -1px;
  width: 3px;
  height: 20px;
  background: var(--gold-light);
  animation: scrollDot 2.4s cubic-bezier(0.6, 0, 0.4, 1) infinite;
}
@keyframes scrollDot {
  0% { transform: translateY(0); opacity: 0; }
  25% { opacity: 1; }
  100% { transform: translateY(76px); opacity: 0; }
}

.hero__facts {
  position: relative;
  z-index: 2;
  border-top: 1px solid rgba(201, 163, 91, 0.22);
  background: linear-gradient(180deg, rgba(5, 17, 20, 0.25), rgba(5, 17, 20, 0.62));
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}
.hero__facts-inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}
.fact {
  min-width: 0;
  padding: 22px 0;
}
.fact + .fact {
  padding-left: clamp(20px, 3vw, 40px);
  border-left: 1px solid rgba(201, 163, 91, 0.18);
}
.fact__label {
  display: block;
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.26em;
  color: var(--gold);
}
.fact p {
  margin-top: 7px;
  font-size: 12.5px;
  line-height: 1.7;
  letter-spacing: 0.05em;
  color: rgba(246, 241, 230, 0.78);
}

/* Hero artwork motion */
.wave {
  will-change: transform;
}
.wave--far { animation: waveDrift 38s linear infinite; }
.wave--mid { animation: waveDrift 28s linear infinite reverse; }
.wave--near { animation: waveDrift 22s linear infinite; }
@keyframes waveDrift {
  to { transform: translateX(-1440px); }
}
.glints rect {
  animation: glint 4.5s ease-in-out infinite;
}
.glints rect:nth-child(2) { animation-delay: 0.8s; }
.glints rect:nth-child(3) { animation-delay: 1.6s; }
.glints rect:nth-child(4) { animation-delay: 2.4s; }
.glints rect:nth-child(5) { animation-delay: 3.2s; }
.glints rect:nth-child(6) { animation-delay: 4s; }
@keyframes glint {
  0%, 100% { opacity: 0.12; }
  50% { opacity: 0.5; }
}

/* ==========================================================================
   Shared section styles
   ========================================================================== */
.section {
  position: relative;
  padding: clamp(72px, 10vw, 138px) 0;
}
.section .container {
  position: relative;
  z-index: 1;
}
.section--pattern {
  background: var(--paper);
}
.section--pattern::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='88' height='44' viewBox='0 0 88 44'%3E%3Cg fill='none' stroke='%2323302f' stroke-width='1'%3E%3Ccircle cx='44' cy='44' r='40'/%3E%3Ccircle cx='44' cy='44' r='29'/%3E%3Ccircle cx='44' cy='44' r='18'/%3E%3Ccircle cx='44' cy='44' r='7'/%3E%3Ccircle cx='0' cy='22' r='40'/%3E%3Ccircle cx='0' cy='22' r='29'/%3E%3Ccircle cx='0' cy='22' r='18'/%3E%3Ccircle cx='0' cy='22' r='7'/%3E%3Ccircle cx='88' cy='22' r='40'/%3E%3Ccircle cx='88' cy='22' r='29'/%3E%3Ccircle cx='88' cy='22' r='18'/%3E%3Ccircle cx='88' cy='22' r='7'/%3E%3Ccircle cx='44' cy='0' r='40'/%3E%3Ccircle cx='44' cy='0' r='29'/%3E%3Ccircle cx='44' cy='0' r='18'/%3E%3Ccircle cx='44' cy='0' r='7'/%3E%3C/g%3E%3C/svg%3E");
  background-size: 88px 44px;
  opacity: 0.055;
  pointer-events: none;
}
.section--tint {
  background: var(--tint);
}
.section--quiet {
  background: var(--quiet);
}
.section--dark {
  background: #0b1e21;
  color: var(--paper);
}
.section--dark::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='88' height='44' viewBox='0 0 88 44'%3E%3Cg fill='none' stroke='%23c9a35b' stroke-width='1'%3E%3Ccircle cx='44' cy='44' r='40'/%3E%3Ccircle cx='44' cy='44' r='29'/%3E%3Ccircle cx='44' cy='44' r='18'/%3E%3Ccircle cx='44' cy='44' r='7'/%3E%3Ccircle cx='0' cy='22' r='40'/%3E%3Ccircle cx='0' cy='22' r='29'/%3E%3Ccircle cx='0' cy='22' r='18'/%3E%3Ccircle cx='0' cy='22' r='7'/%3E%3Ccircle cx='88' cy='22' r='40'/%3E%3Ccircle cx='88' cy='22' r='29'/%3E%3Ccircle cx='88' cy='22' r='18'/%3E%3Ccircle cx='88' cy='22' r='7'/%3E%3Ccircle cx='44' cy='0' r='40'/%3E%3Ccircle cx='44' cy='0' r='29'/%3E%3Ccircle cx='44' cy='0' r='18'/%3E%3Ccircle cx='44' cy='0' r='7'/%3E%3C/g%3E%3C/svg%3E");
  background-size: 88px 44px;
  opacity: 0.05;
  pointer-events: none;
}

.section__head {
  max-width: 760px;
  margin-bottom: clamp(40px, 6vw, 68px);
}
.eyebrow {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.26em;
  color: #8b7546;
}
.eyebrow__num {
  font-family: var(--serif);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gold-deep);
}
.eyebrow__line {
  width: 42px;
  height: 1px;
  background: currentColor;
  opacity: 0.5;
}
.eyebrow--dark {
  color: var(--gold);
}
.eyebrow--dark .eyebrow__num {
  color: var(--gold-light);
}
.section__title {
  margin-top: 18px;
  font-family: var(--serif);
  font-size: clamp(1.85rem, 4.3vw, 3.3rem);
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: 0.04em;
}
.section__lead {
  max-width: 620px;
  margin-top: 22px;
  font-size: clamp(13.5px, 1.3vw, 15px);
  line-height: 2.1;
  letter-spacing: 0.03em;
  color: var(--muted);
}
.section__head--dark .section__title {
  color: var(--paper);
}
.section__head--dark .section__lead {
  color: rgba(246, 241, 230, 0.62);
}
.section__footnote {
  margin-top: 28px;
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.sp-only {
  display: none;
}

/* Reveal */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 1s var(--ease), transform 1s var(--ease);
  transition-delay: var(--d, 0s);
}
.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ==========================================================================
   01 Lake
   ========================================================================== */
.lake {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: clamp(36px, 6vw, 88px);
  align-items: center;
}
.lake__text p {
  margin-bottom: 20px;
  font-size: 14.5px;
  line-height: 2.15;
  letter-spacing: 0.02em;
  color: #485652;
}
.lake__text p:last-child {
  margin-bottom: 0;
}
.lake__lead strong {
  font-weight: 600;
  color: var(--text);
}
.lake__note {
  margin-top: 28px !important;
  padding-left: 18px;
  border-left: 1px solid rgba(185, 156, 98, 0.55);
  font-size: 12.5px !important;
  line-height: 2 !important;
  color: #7a6a4c !important;
}
.lake__art {
  padding-inline: clamp(0px, 2vw, 20px);
}
.lake__art svg {
  width: 100%;
  height: auto;
}
.lake__caption {
  margin-top: 10px;
  text-align: center;
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: #8b7546;
}
.lake__caption span {
  display: block;
  margin-top: 3px;
  font-size: 9px;
  letter-spacing: 0.08em;
  color: #a99a7c;
}
.lake__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: clamp(48px, 7vw, 82px);
  padding-top: clamp(28px, 4vw, 38px);
  border-top: 1px solid rgba(35, 48, 47, 0.16);
}
.stat__num {
  white-space: nowrap;
  font-family: var(--serif);
  font-size: clamp(2.3rem, 4.4vw, 3.5rem);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: 0.02em;
  color: #1d3a3d;
}
.stat__unit {
  margin-left: 7px;
  font-size: 0.32em;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--gold-deep);
}
.stat__label {
  margin-top: 10px;
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* ==========================================================================
   02 Cards
   ========================================================================== */
.cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(14px, 2vw, 22px);
}
.card {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 3.2vw, 42px);
  background: rgba(255, 255, 255, 0.52);
  border: 1px solid rgba(35, 48, 47, 0.1);
  transition: background 0.45s var(--ease), transform 0.45s var(--ease), box-shadow 0.45s var(--ease);
}
.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), transparent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.5s var(--ease);
}
.card:hover {
  background: #fffdf7;
  transform: translateY(-5px);
  box-shadow: 0 30px 60px -34px rgba(20, 40, 40, 0.42);
}
.card:hover::before {
  transform: scaleX(1);
}
.card__num {
  margin-bottom: 16px;
  font-family: var(--serif);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--gold-deep);
}
.card__title {
  margin-bottom: 12px;
  font-family: var(--serif);
  font-size: clamp(1.16rem, 1.8vw, 1.32rem);
  font-weight: 600;
  line-height: 1.65;
  letter-spacing: 0.03em;
}
.card__text {
  font-size: 13.5px;
  line-height: 2.05;
  letter-spacing: 0.02em;
  color: var(--muted);
}

/* ==========================================================================
   Band
   ========================================================================== */
.band {
  position: relative;
  overflow: hidden;
  padding: clamp(64px, 8vw, 108px) 0;
  background: #0c2225;
  color: var(--paper);
  text-align: center;
}
.band::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='88' height='44' viewBox='0 0 88 44'%3E%3Cg fill='none' stroke='%23c9a35b' stroke-width='1'%3E%3Ccircle cx='44' cy='44' r='40'/%3E%3Ccircle cx='44' cy='44' r='29'/%3E%3Ccircle cx='44' cy='44' r='18'/%3E%3Ccircle cx='44' cy='44' r='7'/%3E%3Ccircle cx='0' cy='22' r='40'/%3E%3Ccircle cx='0' cy='22' r='29'/%3E%3Ccircle cx='0' cy='22' r='18'/%3E%3Ccircle cx='0' cy='22' r='7'/%3E%3Ccircle cx='88' cy='22' r='40'/%3E%3Ccircle cx='88' cy='22' r='29'/%3E%3Ccircle cx='88' cy='22' r='18'/%3E%3Ccircle cx='88' cy='22' r='7'/%3E%3Ccircle cx='44' cy='0' r='40'/%3E%3Ccircle cx='44' cy='0' r='29'/%3E%3Ccircle cx='44' cy='0' r='18'/%3E%3Ccircle cx='44' cy='0' r='7'/%3E%3C/g%3E%3C/svg%3E");
  background-size: 88px 44px;
  opacity: 0.07;
}
.band__inner {
  position: relative;
  z-index: 1;
  padding-inline: 24px;
}
.band__en {
  font-size: 9.5px;
  font-weight: 500;
  letter-spacing: 0.4em;
  color: var(--gold);
}
.band__jp {
  margin: 16px 0 14px;
  font-family: var(--serif);
  font-size: clamp(2rem, 5.2vw, 3.8rem);
  font-weight: 500;
  letter-spacing: 0.1em;
  line-height: 1.4;
}
.band__sub {
  font-size: 12.5px;
  letter-spacing: 0.12em;
  color: rgba(246, 241, 230, 0.55);
}

/* ==========================================================================
   03 Eat
   ========================================================================== */
.eat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(14px, 2vw, 22px);
}
.eat-card {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 2.8vw, 34px);
  background: #fffdf7;
  border: 1px solid rgba(35, 48, 47, 0.09);
  transition: transform 0.45s var(--ease), box-shadow 0.45s var(--ease), border-color 0.45s;
}
.eat-card:hover {
  transform: translateY(-5px);
  border-color: rgba(201, 163, 91, 0.55);
  box-shadow: 0 30px 60px -34px rgba(20, 40, 40, 0.36);
}
.eat-card__kanji {
  position: absolute;
  right: 6px;
  bottom: -22px;
  font-family: var(--serif);
  font-size: clamp(80px, 9vw, 120px);
  line-height: 1;
  color: rgba(201, 163, 91, 0.12);
  pointer-events: none;
  transition: color 0.5s, transform 0.5s var(--ease);
}
.eat-card:hover .eat-card__kanji {
  color: rgba(201, 163, 91, 0.2);
  transform: translateY(-4px);
}
.eat-card__head {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}
.eat-card__badge {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: none;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(185, 156, 98, 0.55);
  border-radius: 50%;
  background: rgba(201, 163, 91, 0.05);
  font-family: var(--serif);
  font-size: 15px;
  color: var(--gold-deep);
  transition: background 0.4s, color 0.4s, border-color 0.4s;
}
.eat-card:hover .eat-card__badge {
  background: var(--gold);
  border-color: var(--gold);
  color: #fffdf7;
}
.eat-card__title {
  font-family: var(--serif);
  font-size: clamp(1.1rem, 1.6vw, 1.22rem);
  font-weight: 600;
  letter-spacing: 0.04em;
}
.eat-card__text {
  position: relative;
  z-index: 1;
  margin-bottom: 18px;
  font-size: 13px;
  line-height: 2;
  color: var(--muted);
}
.tags {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}
.tag {
  padding: 3px 9px;
  border: 1px solid rgba(35, 48, 47, 0.18);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.4);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: #7a6a4c;
}

/* ==========================================================================
   04 Life
   ========================================================================== */
.life {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: clamp(40px, 6vw, 92px);
  align-items: start;
}
.life__aside {
  position: sticky;
  top: 128px;
}
.life__note {
  max-width: 340px;
  margin-top: 36px;
  padding-left: 20px;
  border-left: 1px solid rgba(201, 163, 91, 0.4);
  font-size: 12.5px;
  line-height: 2;
  color: rgba(246, 241, 230, 0.55);
}
.timeline {
  position: relative;
  padding-left: 40px;
}
.timeline::before {
  content: "";
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 5px;
  width: 1px;
  background: linear-gradient(to bottom, rgba(201, 163, 91, 0.6), rgba(201, 163, 91, 0.06));
}
.tl-item {
  position: relative;
  padding-bottom: 42px;
}
.tl-item:last-child {
  padding-bottom: 0;
}
.tl-item::before {
  content: "";
  position: absolute;
  top: 7px;
  left: -40px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 5px rgba(201, 163, 91, 0.1);
}
.tl-item__num {
  display: block;
  margin-bottom: 8px;
  font-family: var(--serif);
  font-size: 10px;
  letter-spacing: 0.24em;
  color: var(--gold);
}
.tl-item__title {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 10px;
  font-family: var(--serif);
  font-size: clamp(1.25rem, 2vw, 1.55rem);
  font-weight: 500;
  letter-spacing: 0.04em;
}
.tl-item__en {
  font-family: var(--sans);
  font-size: 9.5px;
  font-weight: 400;
  letter-spacing: 0.2em;
  color: rgba(246, 241, 230, 0.38);
}
.tl-item__text {
  max-width: 560px;
  font-size: 14px;
  line-height: 2;
  color: rgba(246, 241, 230, 0.68);
}

/* ==========================================================================
   05 Visit
   ========================================================================== */
.visit {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 450px;
  gap: clamp(32px, 5vw, 72px);
  align-items: start;
}
.spots {
  border-top: 1px solid rgba(35, 48, 47, 0.16);
}
.spot {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 12px;
  padding: 28px 0;
  border-bottom: 1px solid rgba(35, 48, 47, 0.13);
  transition: padding-left 0.35s var(--ease);
}
.spot:hover {
  padding-left: 6px;
}
.spot__num {
  padding-top: 4px;
  font-family: var(--serif);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold-deep);
}
.spot__title {
  margin-bottom: 8px;
  font-family: var(--serif);
  font-size: clamp(1.2rem, 1.8vw, 1.38rem);
  font-weight: 600;
  letter-spacing: 0.04em;
}
.spot__text {
  margin-bottom: 14px;
  font-size: 13.5px;
  line-height: 1.95;
  color: var(--muted);
}
.visit__aside {
  position: sticky;
  top: 112px;
}
.map-card {
  padding: 14px;
  background: #eee7d8;
  border: 1px solid rgba(35, 48, 47, 0.12);
}
.map-card svg {
  width: 100%;
  height: auto;
}
.map-card figcaption {
  margin-top: 10px;
  text-align: right;
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: #7d755f;
}
.map-labels text {
  paint-order: stroke;
  stroke: #eee7d8;
  stroke-width: 2.5px;
  stroke-linejoin: round;
}
.map-lake-label {
  font-family: var(--serif) !important;
  font-size: 16px !important;
  letter-spacing: 0.2em !important;
  fill: #4b6a64 !important;
}
.map-sea-label {
  font-family: var(--serif) !important;
  font-size: 13px !important;
  letter-spacing: 0.3em !important;
  fill: #5d7772 !important;
}

.access {
  margin-top: 18px;
  padding: 24px 26px 8px;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(35, 48, 47, 0.12);
}
.access__title {
  margin-bottom: 8px;
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.06em;
}
.access__row {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 12px;
  padding: 13px 0;
  border-top: 1px solid rgba(35, 48, 47, 0.1);
}
.access__row dt {
  padding-top: 3px;
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--gold-deep);
}
.access__row dd {
  font-size: 12.5px;
  line-height: 1.9;
  color: #5a6562;
}

/* ==========================================================================
   06 Future
   ========================================================================== */
.ethics {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: clamp(40px, 6vw, 92px);
  align-items: start;
}
.ethics__copy .section__title {
  margin-top: 18px;
}
.ethics__statement {
  margin-top: 26px;
  font-family: var(--serif);
  font-size: clamp(1.22rem, 2.2vw, 1.62rem);
  font-weight: 500;
  line-height: 1.95;
  letter-spacing: 0.03em;
  color: var(--text);
}
.ethics__statement em {
  font-style: normal;
  background: linear-gradient(transparent 62%, rgba(201, 163, 91, 0.4) 62%);
}
.ethics__note {
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid rgba(35, 48, 47, 0.15);
  font-size: 12.5px;
  line-height: 2.1;
  color: var(--muted);
}
.principles {
  display: grid;
  gap: 1px;
  align-self: start;
  background: rgba(35, 48, 47, 0.13);
  border: 1px solid rgba(35, 48, 47, 0.13);
}
.principle {
  padding: 26px 28px;
  background: var(--paper);
  transition: background 0.35s;
}
.principle:hover {
  background: #fffdf7;
}
.principle__num {
  font-family: var(--serif);
  font-size: 10px;
  letter-spacing: 0.24em;
  color: var(--gold-deep);
}
.principle h3 {
  margin: 8px 0;
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: 0.08em;
}
.principle p {
  font-size: 12.5px;
  line-height: 2;
  color: var(--muted);
}

/* ==========================================================================
   07 FAQ
   ========================================================================== */
.faq {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: clamp(40px, 6vw, 100px);
  align-items: start;
}
.section__head--faq {
  position: sticky;
  top: 128px;
  margin-bottom: 0;
}
.accordion {
  border-top: 1px solid rgba(35, 48, 47, 0.2);
}
.acc-item {
  border-bottom: 1px solid rgba(35, 48, 47, 0.15);
}
.acc-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
  padding: 24px 0;
  border: 0;
  background: none;
  cursor: pointer;
  font-family: var(--serif);
  font-size: clamp(1rem, 1.4vw, 1.1rem);
  font-weight: 600;
  line-height: 1.7;
  letter-spacing: 0.03em;
  text-align: left;
  color: var(--text);
  transition: color 0.3s;
}
.acc-btn:hover {
  color: var(--gold-deep);
}
.acc-icon {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
}
.acc-icon::before,
.acc-icon::after {
  content: "";
  position: absolute;
  background: var(--gold-deep);
  transition: transform 0.35s var(--ease);
}
.acc-icon::before {
  top: 6.5px;
  left: 0;
  width: 14px;
  height: 1px;
}
.acc-icon::after {
  top: 0;
  left: 6.5px;
  width: 1px;
  height: 14px;
}
.acc-btn[aria-expanded="true"] .acc-icon::after {
  transform: rotate(90deg);
}
.acc-panel p {
  padding-bottom: 26px;
  font-size: 14px;
  line-height: 2.05;
  color: var(--muted);
}
.js .acc-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s var(--ease);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  position: relative;
  padding: clamp(56px, 7vw, 88px) 0 28px;
  background: #08171a;
  color: var(--paper);
}
.footer__top {
  display: flex;
  justify-content: space-between;
  gap: 60px;
  padding-bottom: 54px;
  border-bottom: 1px solid rgba(201, 163, 91, 0.16);
}
.brand--footer {
  color: var(--gold-light);
}
.footer__tagline {
  margin-top: 18px;
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: rgba(246, 241, 230, 0.48);
}
.footer__nav {
  display: flex;
  gap: clamp(36px, 6vw, 72px);
}
.footer__heading {
  margin-bottom: 16px;
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.3em;
  color: var(--gold);
}
.footer__col ul {
  display: grid;
  gap: 10px;
}
.footer__col a {
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: rgba(246, 241, 230, 0.7);
  transition: color 0.3s;
}
.footer__col a:hover {
  color: var(--gold-light);
}
.footer__bottom {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  padding-top: 24px;
}
.footer__legal {
  max-width: 760px;
}
.footer__bottom p {
  max-width: 760px;
  font-size: 10.5px;
  line-height: 1.8;
  color: rgba(246, 241, 230, 0.36);
}
.footer__bottom .footer__credit {
  margin-top: 9px;
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: rgba(246, 241, 230, 0.6);
}
.footer__credit span {
  color: var(--gold-light);
  font-weight: 500;
}
.footer__meta {
  display: flex;
  align-items: center;
  gap: 20px;
  flex: none;
  font-size: 10.5px;
  letter-spacing: 0.06em;
  color: rgba(246, 241, 230, 0.4);
  white-space: nowrap;
}
.to-top {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(201, 163, 91, 0.4);
  border-radius: 50%;
  color: var(--gold-light);
  transition: background 0.3s, color 0.3s, border-color 0.3s;
}
.to-top svg {
  width: 15px;
  height: 15px;
}
.to-top:hover {
  background: var(--gold);
  border-color: var(--gold);
  color: #102427;
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1100px) {
  .header__cta {
    display: none;
  }
}

@media (max-width: 980px) {
  .nav {
    display: none;
  }
  .menu-btn {
    display: flex;
  }

  .hero__vertical,
  .hero__scroll {
    display: none;
  }

  .lake,
  .life,
  .visit,
  .faq,
  .ethics {
    grid-template-columns: 1fr;
  }
  .lake__art {
    max-width: 520px;
    margin-inline: auto;
  }
  .life__aside,
  .section__head--faq {
    position: static;
  }
  .life__note {
    max-width: 620px;
    margin-top: 24px;
  }
  .visit__aside {
    position: static;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    align-items: start;
  }
  .access {
    margin-top: 0;
  }
  .eat-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .ethics__statement {
    max-width: 760px;
  }
  .principles {
    grid-template-columns: repeat(3, 1fr);
  }
  .principle {
    padding: 22px;
  }
}

@media (max-width: 720px) {
  html {
    scroll-padding-top: 92px;
  }
  .header__inner {
    height: 72px;
  }
  .header.is-scrolled .header__inner {
    height: 64px;
  }
  .brand__mark {
    width: 30px;
    height: 30px;
  }
  .brand__jp {
    font-size: 14px;
  }

  .hero__inner {
    padding-top: 118px;
    padding-bottom: 30px;
  }
  .hero__svg {
    position: relative;
    top: -96px;
    width: 220%;
    max-width: none;
    height: calc(100% + 96px);
    margin-left: -120%;
  }
  .hero__vertical,
  .hero__scroll {
    display: none;
  }
  .seal {
    display: none;
  }
  .hero__title {
    font-size: clamp(2.9rem, 14vw, 4.4rem);
    letter-spacing: 0.02em;
  }
  .hero__eyebrow {
    font-size: 9px;
    letter-spacing: 0.2em;
  }
  .hero__rule {
    width: 28px;
  }
  .hero__lead br {
    display: none;
  }
  .hero__facts-inner {
    grid-template-columns: 1fr;
  }
  .fact {
    padding: 11px 0;
  }
  .fact + .fact {
    padding-left: 0;
    border-left: 0;
    border-top: 1px solid rgba(201, 163, 91, 0.14);
  }
  .fact p {
    margin-top: 3px;
    font-size: 11.5px;
  }
  .fact__label {
    font-size: 8px;
  }

  .cards,
  .eat-grid {
    grid-template-columns: 1fr;
  }
  .lake__stats {
    gap: 14px;
    margin-top: 42px;
  }
  .stat__num {
    font-size: clamp(1.5rem, 5.9vw, 2.4rem);
  }
  .stat__label {
    margin-top: 6px;
    font-size: 10px;
    line-height: 1.6;
  }
  .lake__text p {
    font-size: 13.5px;
  }

  .visit__aside {
    grid-template-columns: 1fr;
  }
  .principles {
    grid-template-columns: 1fr;
  }
  .section__head--faq {
    margin-bottom: 34px;
  }
  .spot {
    grid-template-columns: 34px 1fr;
    padding: 24px 0;
  }
  .acc-btn {
    padding: 21px 0;
  }

  .footer__top {
    flex-direction: column;
    gap: 40px;
    padding-bottom: 40px;
  }
  .footer__nav {
    gap: 44px;
  }
  .footer__bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 22px;
  }
  .footer__meta {
    width: 100%;
    justify-content: space-between;
  }
  .sp-only {
    display: inline;
  }
}

@media (max-width: 420px) {
  .hero__title {
    font-size: 2.75rem;
  }
  .btn {
    padding: 14px 20px;
    font-size: 11.5px;
  }
  .hero__actions {
    gap: 10px;
  }
  .band__jp {
    letter-spacing: 0.06em;
  }
  .tl-item {
    padding-bottom: 34px;
  }
}

@media (max-height: 860px) and (min-width: 721px) {
  .hero__scroll {
    display: none;
  }
}

/* ==========================================================================
   Reduced motion
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .js [data-reveal] {
    opacity: 1;
    transform: none;
  }
  .wave,
  .glints rect {
    animation: none;
  }
  .hero__scroll i::after {
    display: none;
  }
}

@media (max-width: 720px) and (max-height: 760px) {
  .hero__moon {
    display: none;
  }
}

@media (max-width: 360px) {
  .lake__stats {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .stat {
    display: flex;
    align-items: baseline;
    gap: 14px;
    padding: 14px 0;
    border-top: 1px solid rgba(35, 48, 47, 0.12);
  }
  .stat:first-child {
    border-top: 0;
  }
  .stat__num {
    flex: none;
    font-size: 1.8rem;
  }
  .stat__label {
    margin-top: 0;
  }
}