/* =====================================================================
   きくもと — 瀬波温泉の民宿　LP
   コンセプト：時間流動型（朝→昼→夕→黄昏→夜→翌朝）
   背景の空・海・太陽がスクロールで変化する
   ===================================================================== */

* { box-sizing: border-box; max-width: 100%; }
html, body {
  margin: 0; padding: 0;
  overflow-x: hidden;
  max-width: 100%;
}
img, iframe, video, svg { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { background: none; border: 0; padding: 0; font: inherit; color: inherit; cursor: pointer; }
ul { list-style: none; padding: 0; margin: 0; }

:root {
  /* 章ごとの空の色（CSS変数を JS でなく CSS attribute selector で切り替え） */
  --sky-top:    #06112a;
  --sky-mid:    #14254d;
  --sky-bottom: #2a3a5e;
  --sea-color:  #0a1530;
  --sun-x: 8%;
  --sun-y: 95%;
  --sun-scale: 0.55;
  --sun-opacity: 0.4;
  --text-color: #f6efe0;
  --text-soft:  rgba(246,239,224,0.72);
  --text-dim:   rgba(246,239,224,0.5);
  --accent:     #f4c977;
  --stars-opacity: 0.4;
  --wave-opacity: 0.18;
  --wave-color: #ffffff;

  --serif-jp: "Shippori Mincho", "Noto Serif JP", "游明朝", "YuMincho", serif;
  --sans-en:  "Cormorant Garamond", "Shippori Mincho", serif;
}

/* =========================================================
   章ごとの色　— body[data-chapter] で全体の空気を変える
   ========================================================= */
body[data-chapter="dawn"] {
  --sky-top:    #0e1a3a;
  --sky-mid:    #4a4670;
  --sky-bottom: #c79285;
  --sea-color:  #1f2a4a;
  --sun-x: 5%; --sun-y: 78%; --sun-scale: 0.6; --sun-opacity: 0.85;
  --text-color: #f6efe0;
  --stars-opacity: 0.18;
  --wave-opacity: 0.16;
}
body[data-chapter="noon"] {
  --sky-top:    #5fa3d6;
  --sky-mid:    #a8d3eb;
  --sky-bottom: #e7e7d9;
  --sea-color:  #2a6a9c;
  --sun-x: 50%; --sun-y: 12%; --sun-scale: 0.7; --sun-opacity: 0.95;
  --text-color: #1a2436;
  --text-soft:  rgba(26,36,54,0.78);
  --text-dim:   rgba(26,36,54,0.55);
  --stars-opacity: 0;
  --wave-opacity: 0.28;
  --wave-color: #ffffff;
}
body[data-chapter="sunset"] {
  --sky-top:    #2a1838;
  --sky-mid:    #d24c2a;
  --sky-bottom: #f4a44a;
  --sea-color:  #4a1f2a;
  --sun-x: 88%; --sun-y: 58%; --sun-scale: 1.1; --sun-opacity: 1;
  --text-color: #fff5e0;
  --text-soft:  rgba(255,245,224,0.82);
  --text-dim:   rgba(255,245,224,0.6);
  --stars-opacity: 0.1;
  --wave-opacity: 0.32;
  --wave-color: #ffd9b0;
}
body[data-chapter="twilight"] {
  --sky-top:    #14132f;
  --sky-mid:    #4a2548;
  --sky-bottom: #8a3a3a;
  --sea-color:  #1a1430;
  --sun-x: 102%; --sun-y: 88%; --sun-scale: 0.6; --sun-opacity: 0.4;
  --text-color: #f4ead6;
  --stars-opacity: 0.45;
  --wave-opacity: 0.18;
  --wave-color: #e9c48c;
}
body[data-chapter="night"] {
  --sky-top:    #02060e;
  --sky-mid:    #0a1224;
  --sky-bottom: #1a2240;
  --sea-color:  #050a18;
  --sun-x: 120%; --sun-y: 130%; --sun-scale: 0; --sun-opacity: 0;
  --text-color: #ece7d8;
  --stars-opacity: 1;
  --wave-opacity: 0.1;
  --wave-color: #d8d0b0;
}
body[data-chapter="morning"] {
  --sky-top:    #2a3a5e;
  --sky-mid:    #b5a6c4;
  --sky-bottom: #f2d6c0;
  --sea-color:  #2a3a52;
  --sun-x: 12%; --sun-y: 62%; --sun-scale: 0.55; --sun-opacity: 0.7;
  --text-color: #2a2436;
  --text-soft:  rgba(42,36,54,0.78);
  --text-dim:   rgba(42,36,54,0.52);
  --stars-opacity: 0.1;
  --wave-opacity: 0.22;
  --wave-color: #ffffff;
}

/* =========================================================
   body・全体ベース
   ========================================================= */
body {
  font-family: var(--serif-jp);
  color: var(--text-color);
  line-height: 1.9;
  letter-spacing: 0.04em;
  background: #06112a;
  transition: color 1.2s ease;
  -webkit-font-smoothing: antialiased;
}

/* =========================================================
   固定背景：空・海・太陽
   ========================================================= */
.sky {
  position: fixed; inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}
.sky-gradient {
  position: absolute; inset: 0;
  background: linear-gradient(
    to bottom,
    var(--sky-top) 0%,
    var(--sky-mid) 45%,
    var(--sky-bottom) 75%,
    var(--sea-color) 75.01%,
    var(--sea-color) 100%
  );
  transition: background 1.6s ease;
}
.horizon {
  position: absolute;
  left: 0; right: 0;
  top: 75%;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--text-soft), transparent);
  opacity: 0.4;
}

/* 星 */
.stars {
  position: absolute; inset: 0 0 25% 0;
  opacity: var(--stars-opacity);
  transition: opacity 1.6s ease;
  background-image:
    radial-gradient(1px 1px at 12% 18%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 25% 8%, #fff 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 40% 25%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 55% 12%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 68% 22%, #fff 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 80% 8%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 92% 18%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 18% 38%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 32% 48%, #fff 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 50% 42%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 62% 55%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 75% 38%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 88% 48%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 8% 60%, #fff 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 22% 65%, #fff 50%, transparent 51%);
}

/* 太陽 */
.sun-orbit {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.sun-orbit svg {
  width: 100%;
  height: 100%;
}
.sun {
  transition:
    cx 2.2s cubic-bezier(.45,.05,.55,.95),
    cy 2.2s cubic-bezier(.45,.05,.55,.95),
    r 2.2s ease,
    opacity 1.6s ease;
  transform-origin: center;
  opacity: var(--sun-opacity);
}

/* 太陽の位置は JS で動かす（cx/cy） */

/* 海・波 */
.sea {
  position: absolute;
  left: 0; right: 0;
  bottom: 0;
  height: 25%;
  overflow: hidden;
  background: linear-gradient(to bottom, transparent 0%, var(--sea-color) 100%);
}
.waves {
  position: absolute;
  left: 0; right: 0;
  bottom: 0;
  width: 200%;
  height: 100%;
}
.wave {
  fill: var(--wave-color);
  opacity: var(--wave-opacity);
  transition: opacity 1.6s ease, fill 1.6s ease;
}
.wave.w1 { animation: waveMove 14s linear infinite; }
.wave.w2 { animation: waveMove 19s linear infinite reverse; opacity: calc(var(--wave-opacity) * 0.7); }
.wave.w3 { animation: waveMove 24s linear infinite; opacity: calc(var(--wave-opacity) * 0.45); }
@keyframes waveMove {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

@media (prefers-reduced-motion: reduce) {
  .wave { animation: none; }
  .sun { transition: none; }
}

/* =========================================================
   ヘッダー
   ========================================================= */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 28px;
  background: linear-gradient(to bottom, rgba(0,0,0,0.22), transparent);
  transition: background 1s ease;
}
.brand {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
  color: var(--text-color);
  text-shadow: 0 1px 12px rgba(0,0,0,0.35);
  transition: color 1s ease;
  white-space: nowrap;
}
.brand-sub {
  font-size: 11px;
  letter-spacing: 0.32em;
  margin-right: -0.32em;
  opacity: 0.78;
  white-space: nowrap;
}
.brand-main {
  font-size: 26px;
  font-weight: 500;
  letter-spacing: 0.24em;
  margin-right: -0.24em;
  white-space: nowrap;
}
.lang-switcher {
  display: flex;
  gap: 4px;
  background: rgba(20,20,30,0.32);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 5px 7px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.18);
}
.lang-btn {
  font-family: var(--sans-en);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: rgba(255,255,255,0.78);
  padding: 5px 10px;
  border-radius: 999px;
  min-width: 32px;
  transition: background .25s, color .25s;
}
.lang-btn.is-active {
  background: rgba(255,255,255,0.95);
  color: #1a1830;
}
.lang-btn:hover:not(.is-active) {
  background: rgba(255,255,255,0.15);
  color: #fff;
}

/* =========================================================
   メイン全体
   ========================================================= */
main {
  position: relative;
  z-index: 10;
}

/* =========================================================
   ヒーロー
   ========================================================= */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  padding: 18vh 28px 30vh; /* 海面（下25%）と被らないよう上下を調整 */
  text-align: center;
  color: var(--text-color);
  transition: color 1.2s ease;
}
.hero-inner { max-width: 720px; }
.hero-eyebrow {
  font-family: var(--sans-en);
  font-size: 13px;
  letter-spacing: 0.5em;
  margin: 0 0 26px;
  opacity: 0.85;
}
.hero-eyebrow span {
  display: inline-block;
  padding: 8px 18px;
  border-top: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
}
.hero-title {
  font-size: clamp(34px, 6.5vw, 76px);
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: 0.18em;
  margin: 0 0 32px;
}
.hero-title .line {
  display: block;
  text-shadow: 0 2px 24px rgba(0,0,0,0.32);
}
.hero-lead {
  font-size: clamp(14px, 1.6vw, 17px);
  line-height: 2.1;
  margin: 0 auto 28px;
  max-width: 540px;
  opacity: 0.92;
}
.hero-credit {
  font-size: 12px;
  letter-spacing: 0.32em;
  opacity: 0.78;
  margin: 0;
}
.hero-credit .dot { margin: 0 0.6em; opacity: 0.55; }

.scroll-cue {
  position: absolute;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  font-family: var(--sans-en);
  font-size: 11px;
  letter-spacing: 0.4em;
  opacity: 0.75;
}
.scroll-cue .line-down {
  width: 1px;
  height: 48px;
  background: currentColor;
  animation: scrollHint 2.2s ease-in-out infinite;
  transform-origin: top center;
}
@keyframes scrollHint {
  0%, 100% { transform: scaleY(0.2); opacity: 0.3; }
  50%      { transform: scaleY(1);   opacity: 1; }
}

/* =========================================================
   三つの強み（ヒーロー直後のサマリーセクション）
   ========================================================= */
.strengths {
  position: relative;
  padding: 100px 28px 120px;
  color: var(--text-color);
  transition: color 1.2s ease;
}
.strengths-title {
  text-align: center;
  margin: 0 0 56px;
  font-weight: 400;
}
.strengths-eyebrow {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 0.5em;
  margin-right: -0.5em;
  padding: 12px 28px;
  border-top: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
  opacity: 0.85;
}
.strengths-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  max-width: 1100px;
  margin: 0 auto 64px;
}
.strength-card {
  position: relative;
  padding: 36px 28px 32px;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.22);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: 2px;
}
body[data-chapter="noon"] .strength-card,
body[data-chapter="morning"] .strength-card {
  background: rgba(255,255,255,0.65);
  border-color: rgba(0,0,0,0.06);
}
.strength-num {
  font-family: var(--sans-en);
  font-size: 40px;
  letter-spacing: 0.04em;
  opacity: 0.42;
  display: block;
  margin-bottom: 4px;
}
.strength-tag {
  font-size: 11px;
  letter-spacing: 0.4em;
  opacity: 0.6;
  margin: 0 0 14px;
}
.strength-headline {
  font-size: 26px;
  font-weight: 600;
  line-height: 1.45;
  letter-spacing: 0.08em;
  margin: 0 0 18px;
}
.strength-sub {
  font-size: 14px;
  line-height: 1.85;
  letter-spacing: 0.06em;
  opacity: 0.95;
  margin: 0 0 14px;
  padding-bottom: 14px;
  border-bottom: 1px dotted currentColor;
}
.strength-sub strong {
  font-weight: 600;
  font-size: 17px;
  letter-spacing: 0.04em;
  margin: 0 1px;
}
.strength-detail {
  font-size: 13px;
  line-height: 1.95;
  letter-spacing: 0.04em;
  opacity: 0.82;
  margin: 0 0 18px;
}
.strength-detail strong {
  font-weight: 500;
}
.strength-bene {
  font-size: 13px;
  letter-spacing: 0.12em;
  margin: 0;
  font-weight: 500;
  opacity: 0.95;
}
.strength-bene strong {
  font-family: var(--sans-en);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.04em;
}
.strengths-foot {
  text-align: center;
  font-size: 13px;
  letter-spacing: 0.18em;
  line-height: 2;
  opacity: 0.78;
  margin: 40px auto 0;
  max-width: 600px;
}
.strengths-stats {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  max-width: 1100px;
  margin: 0 auto;
  border-top: 1px solid rgba(255,255,255,0.32);
  border-left: 1px solid rgba(255,255,255,0.32);
}
.strengths-stats > div {
  padding: 20px 14px;
  border-right: 1px solid rgba(255,255,255,0.32);
  border-bottom: 1px solid rgba(255,255,255,0.32);
  text-align: center;
}
.strengths-stats dt {
  font-size: 10px;
  letter-spacing: 0.32em;
  opacity: 0.68;
  margin-bottom: 8px;
  margin-right: -0.32em;
}
.strengths-stats dd {
  margin: 0;
  font-family: var(--sans-en);
  font-size: 17px;
  letter-spacing: 0.06em;
  font-weight: 400;
}

@media (max-width: 768px) {
  .strengths { padding: 70px 22px 90px; }
  .strengths-title { margin-bottom: 36px; }
  .strengths-eyebrow { font-size: 10px; letter-spacing: 0.32em; margin-right: -0.32em; padding: 10px 16px; }
  .strengths-grid {
    grid-template-columns: 1fr;
    gap: 16px;
    margin-bottom: 40px;
  }
  .strength-card { padding: 28px 22px; }
  .strength-num { font-size: 30px; margin-bottom: 2px; }
  .strength-tag { font-size: 10px; letter-spacing: 0.32em; margin-bottom: 10px; }
  .strength-headline { font-size: 22px; margin-bottom: 14px; letter-spacing: 0.06em; }
  .strength-sub { font-size: 13px; line-height: 1.8; margin-bottom: 12px; padding-bottom: 12px; }
  .strength-sub strong { font-size: 15px; }
  .strength-detail { font-size: 12.5px; line-height: 1.9; margin-bottom: 14px; }
  .strength-bene { font-size: 12px; letter-spacing: 0.08em; }
  .strength-bene strong { font-size: 14px; }
  .strengths-foot { font-size: 12px; letter-spacing: 0.14em; margin-top: 28px; }
  .strengths-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .strengths-stats > div { padding: 16px 8px; }
  .strengths-stats dt { font-size: 9px; letter-spacing: 0.24em; margin-right: -0.24em; }
  .strengths-stats dd { font-size: 15px; }
}

/* =========================================================
   章共通
   ========================================================= */
.chapter {
  position: relative;
  padding: 140px 28px 140px;
  color: var(--text-color);
  transition: color 1.2s ease;
}
.chapter-mark {
  display: flex;
  align-items: baseline;
  gap: 16px;
  justify-content: center;
  margin-bottom: 56px;
  font-family: var(--serif-jp);
}
.ch-no {
  font-size: 28px;
  letter-spacing: 0.2em;
}
.ch-no::before { content: "第　"; opacity: 0.65; }
.ch-no::after { content: "　章"; opacity: 0.65; }
.ch-time {
  font-family: var(--sans-en);
  font-size: 14px;
  letter-spacing: 0.32em;
  opacity: 0.65;
}
.ch-name {
  font-size: 14px;
  letter-spacing: 0.6em;
  margin-right: -0.6em;
  opacity: 0.8;
}
.chapter-body {
  max-width: 880px;
  margin: 0 auto;
}
.ch-heading {
  font-size: clamp(28px, 4.2vw, 48px);
  font-weight: 500;
  line-height: 1.45;
  letter-spacing: 0.16em;
  text-align: center;
  margin: 0 0 48px;
}
.ch-heading span { display: block; }
.ch-prose {
  text-align: center;
  font-size: clamp(14px, 1.5vw, 17px);
  line-height: 2.2;
  margin: 0 auto 56px;
  max-width: 640px;
}
.ch-prose p { margin: 0 0 6px; }

.ch-figure {
  margin: 0 auto;
  max-width: 720px;
}
.ch-figure-wide { max-width: 920px; }
.ch-figure img {
  width: 100%;
  border-radius: 2px;
  box-shadow: 0 16px 60px -20px rgba(0,0,0,0.55);
  filter: saturate(0.95) contrast(1.02);
}
.ch-figure figcaption {
  text-align: center;
  font-size: 12px;
  letter-spacing: 0.24em;
  margin-top: 16px;
  opacity: 0.7;
}

/* =========================================================
   第二章 散歩リスト
   ========================================================= */
.walk-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  max-width: 720px;
  margin: 0 auto;
}
.walk-list li {
  display: grid;
  grid-template-columns: 96px 1fr;
  align-items: baseline;
  gap: 8px 16px;
  padding: 22px 24px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.16);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border-radius: 2px;
}
body[data-chapter="noon"] .walk-list li {
  background: rgba(255,255,255,0.55);
  border-color: rgba(0,0,0,0.08);
}
.walk-time {
  font-family: var(--sans-en);
  font-size: 13px;
  letter-spacing: 0.18em;
  opacity: 0.7;
}
.walk-spot {
  font-size: 17px;
  letter-spacing: 0.14em;
  font-weight: 500;
}
.walk-note {
  grid-column: 1 / -1;
  font-size: 12px;
  letter-spacing: 0.18em;
  opacity: 0.65;
  border-top: 1px dotted currentColor;
  padding-top: 8px;
  margin-top: 4px;
}

/* =========================================================
   第三章 温泉
   ========================================================= */
.onsen-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  margin: 0 0 48px;
}
.onsen-grid figure { margin: 0; }
.onsen-grid img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 2px;
  box-shadow: 0 20px 60px -20px rgba(0,0,0,0.5);
  filter: saturate(0.9) contrast(1.05) brightness(0.96);
}
.onsen-grid figcaption {
  text-align: center;
  font-size: 12px;
  letter-spacing: 0.24em;
  opacity: 0.78;
  margin-top: 14px;
}
.onsen-detail {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  max-width: 720px;
  margin: 0 auto;
  border-top: 1px solid currentColor;
  border-left: 1px solid currentColor;
  border-color: rgba(255,255,255,0.32);
}
.onsen-detail > div {
  padding: 22px 24px;
  border-right: 1px solid rgba(255,255,255,0.32);
  border-bottom: 1px solid rgba(255,255,255,0.32);
}
.onsen-detail dt {
  font-size: 11px;
  letter-spacing: 0.4em;
  opacity: 0.68;
  margin-bottom: 8px;
}
.onsen-detail dd {
  margin: 0;
  font-size: 15px;
  letter-spacing: 0.1em;
  line-height: 1.7;
}

/* =========================================================
   第四章 食卓
   ========================================================= */
.dish-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.dish-grid figure { margin: 0; }
.dish-grid img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 2px;
  box-shadow: 0 14px 40px -16px rgba(0,0,0,0.5);
  filter: saturate(1.05) contrast(1.04);
}
.dish-grid figcaption {
  text-align: center;
  font-size: 12px;
  letter-spacing: 0.24em;
  opacity: 0.75;
  margin-top: 12px;
}
.dish-main {
  grid-column: 1 / -1;
}
.dish-main img {
  aspect-ratio: 16 / 9;
}

/* =========================================================
   第五章 夜
   ========================================================= */
.night-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  max-width: 720px;
  margin: 48px auto 0;
  border-top: 1px solid rgba(255,255,255,0.25);
}
.night-list li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 18px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.25);
  border-right: 1px solid rgba(255,255,255,0.25);
  letter-spacing: 0.18em;
}
.night-list li:nth-child(odd) { border-left: 1px solid rgba(255,255,255,0.25); }
.night-list li > span:first-child {
  font-size: 12px;
  opacity: 0.7;
  letter-spacing: 0.32em;
}

/* =========================================================
   終章 プラン・連絡先・アクセス
   ========================================================= */
.plan-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin: 0 0 56px;
}
.plan-card {
  padding: 32px 28px;
  background: rgba(255,255,255,0.66);
  color: #2a2436;
  border-radius: 2px;
  border: 1px solid rgba(0,0,0,0.08);
  text-align: center;
}
.plan-card-feature {
  background: #2a2436;
  color: #f4ead6;
  border-color: #2a2436;
  box-shadow: 0 18px 40px -20px rgba(42,36,54,0.6);
}
.plan-card h3 {
  font-size: 18px;
  font-weight: 500;
  letter-spacing: 0.24em;
  margin: 0 0 14px;
}
.plan-price {
  font-family: var(--sans-en);
  font-size: 28px;
  font-weight: 400;
  margin: 0 0 8px;
  letter-spacing: 0.04em;
}
.plan-price span {
  font-family: var(--serif-jp);
  display: block;
  font-size: 11px;
  letter-spacing: 0.32em;
  opacity: 0.7;
  margin-top: 4px;
}
.plan-note {
  font-size: 13px;
  letter-spacing: 0.14em;
  opacity: 0.85;
  margin: 0;
}

.cta-block {
  display: grid;
  gap: 14px;
  max-width: 560px;
  margin: 0 auto 64px;
}
.cta-btn {
  display: block;
  padding: 22px 28px;
  border: 1px solid currentColor;
  border-radius: 2px;
  background: rgba(255,255,255,0.66);
  color: #2a2436;
  text-align: center;
  transition: background .3s, color .3s, transform .3s;
}
.cta-btn:hover {
  background: #2a2436;
  color: #f4ead6;
  transform: translateY(-2px);
}
.cta-btn-secondary {
  background: transparent;
  color: #2a2436;
}
.cta-label {
  display: block;
  font-size: 11px;
  letter-spacing: 0.4em;
  opacity: 0.78;
  margin-bottom: 8px;
}
.cta-tel {
  font-family: var(--sans-en);
  font-size: 26px;
  letter-spacing: 0.12em;
  display: block;
}
.cta-mail {
  font-family: var(--sans-en);
  font-size: 17px;
  letter-spacing: 0.12em;
  display: block;
}

.access-block {
  max-width: 720px;
  margin: 0 auto;
  background: rgba(255,255,255,0.66);
  color: #2a2436;
  padding: 36px 32px;
  border-radius: 2px;
}
.access-block h3 {
  font-size: 14px;
  letter-spacing: 0.5em;
  margin: 0 0 22px;
  text-align: center;
  margin-right: -0.5em;
}
.access-block p {
  text-align: center;
  font-size: 15px;
  letter-spacing: 0.12em;
  margin: 0 0 18px;
}
.access-block ul {
  max-width: 520px;
  margin: 0 auto 28px;
  font-size: 14px;
  letter-spacing: 0.1em;
}
.access-block ul li {
  border-bottom: 1px dotted rgba(0,0,0,0.18);
  padding: 12px 0;
  line-height: 1.8;
}
.map-link {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  width: 100%;
  padding: 22px 24px;
  border: 1px solid currentColor;
  border-radius: 2px;
  background: transparent;
  color: #2a2436;
  font-size: 14px;
  letter-spacing: 0.32em;
  transition: background .3s, color .3s, transform .3s;
}
.map-link:hover {
  background: #2a2436;
  color: #f4ead6;
  transform: translateY(-2px);
}
.map-arrow {
  font-family: var(--sans-en);
  font-size: 18px;
  letter-spacing: 0;
}

/* =========================================================
   フッター
   ========================================================= */
.site-footer {
  position: relative;
  z-index: 10;
  padding: 60px 28px 80px;
  text-align: center;
  color: rgba(246,239,224,0.78);
  background: rgba(8,12,28,0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.footer-brand {
  display: inline-flex;
  flex-direction: column;
  margin-bottom: 24px;
  color: #f4ead6;
}
.footer-brand .brand-sub {
  font-size: 10px;
  letter-spacing: 0.6em;
}
.footer-brand .brand-main {
  font-size: 22px;
  letter-spacing: 0.5em;
  margin-right: -0.5em;
}
.footer-info p {
  font-size: 13px;
  letter-spacing: 0.14em;
  margin: 6px 0;
}
.footer-copy {
  font-family: var(--sans-en);
  font-size: 11px;
  letter-spacing: 0.32em;
  opacity: 0.55;
  margin: 28px 0 8px;
}
.footer-sample {
  font-size: 10px;
  letter-spacing: 0.18em;
  opacity: 0.5;
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.8;
}

/* =========================================================
   スマートフォン（〜 768px）
   ========================================================= */
@media (max-width: 768px) {
  .site-header {
    padding: 12px 14px;
    gap: 8px;
  }
  .brand-sub { font-size: 9px; letter-spacing: 0.24em; margin-right: -0.24em; }
  .brand-main { font-size: 18px; letter-spacing: 0.18em; margin-right: -0.18em; }
  .lang-btn { font-size: 10px; padding: 4px 6px; min-width: 24px; }
  .lang-switcher { padding: 4px 5px; gap: 2px; }

  .hero { padding: 100px 22px 70px; }
  .hero-title { letter-spacing: 0.14em; }
  .hero-lead { line-height: 2; }

  .chapter { padding: 90px 22px 90px; }
  .chapter-mark { gap: 10px; margin-bottom: 36px; flex-wrap: wrap; }
  .ch-no { font-size: 22px; }
  .ch-time { font-size: 12px; letter-spacing: 0.24em; }
  .ch-name { font-size: 12px; letter-spacing: 0.5em; margin-right: -0.5em; }
  .ch-heading { letter-spacing: 0.12em; margin-bottom: 32px; }
  .ch-prose { margin-bottom: 36px; }

  .walk-list,
  .onsen-grid,
  .dish-grid,
  .night-list,
  .plan-grid,
  .onsen-detail {
    grid-template-columns: 1fr;
  }
  .night-list li,
  .night-list li:nth-child(odd) {
    border-left: 1px solid rgba(255,255,255,0.25);
  }
  .onsen-detail > div {
    border-right: 1px solid rgba(255,255,255,0.32);
  }
  .dish-main { grid-column: auto; }
  .dish-main img { aspect-ratio: 4 / 3; }

  .cta-tel { font-size: 22px; }
  .cta-mail { font-size: 15px; }

  .access-block { padding: 28px 20px; }
  .access-block p { font-size: 14px; }
  .access-block ul { font-size: 13px; }

  .scroll-cue { font-size: 10px; bottom: 18px; }
  .scroll-cue .line-down { height: 36px; }
}

/* タブレット用の微調整 */
@media (min-width: 769px) and (max-width: 1024px) {
  .chapter { padding: 120px 32px; }
}