:root {
  --red: #e72410;
  --red-ink: #ad1a06;
  --red-deep: #d62511;
  --ink: #2b1b16;
  --cream: #fff4e8;
  --cream-faint: rgba(255, 244, 232, 0.22);
  --paper-line: rgba(158, 28, 12, 0.18);
  --gold: #d9a441;

  --font-display: "Yu Mincho", "YuMincho", "Hiragino Mincho ProN", serif;
  --font-body: "Yu Mincho", "YuMincho", "Hiragino Mincho ProN", serif;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-soft: cubic-bezier(0.22, 0.61, 0.36, 1);
}

html {
  scroll-behavior: smooth;
  background: var(--red);
  color-scheme: light;
  overscroll-behavior-y: none;
}

body {
  position: relative;
  isolation: isolate;
  background: var(--red);
  min-height: 100vh;
  min-height: 100svh;
  color: var(--red-ink);
  font-family: var(--font-body);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

::selection {
  background: var(--cream);
  color: var(--red-ink);
}

:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 6px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

section {
  position: relative;
  width: 100%;
  scroll-margin-top: 78px;
}

#Top {
  scroll-margin-top: 0;
}


/* ===================================================================
   フェードイン（スクロール演出）
=================================================================== */

.fade-in {
  opacity: 0;
  transform: translateY(22px) scaleX(var(--fade-scale-x, 1));
  transition: opacity 1.1s var(--ease-out),
    transform 1.1s var(--ease-out);
  will-change: opacity, transform;
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0) scaleX(var(--fade-scale-x, 1));
  will-change: auto;
}

/* 下層セクションの見出しは、フェード移動と横方向の変形を両立させる */
.section-inner>h2.fade-in {
  transform: translateY(22px) scaleX(1.2);
  transform-origin: left center;
}

.section-inner>h2.fade-in.is-visible {
  transform: translateY(0) scaleX(1.2);
}

@media (prefers-reduced-motion: reduce) {
  .fade-in {
    opacity: 1;
    transform: scaleX(var(--fade-scale-x, 1));
    transition: none;
  }

  .section-inner>h2.fade-in {
    transform: scaleX(1.2);
  }

  .site-header {
    opacity: 1;
    transform: none;
    pointer-events: auto;
    transition: none;
    animation: none !important;
  }

  .logo-spin {
    animation: none !important;
  }

  .logo-spin img {
    filter: brightness(0) invert(1) !important;
  }
}


/* ===================================================================
   HEADER
=================================================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: clamp(20px, 2.2vw, 24px) clamp(22px, 4vw, 58px);
  background: none;
  opacity: 0;
  transform: translateY(-12px);
  pointer-events: none;
  transition: opacity 0.7s var(--ease-out),
    transform 0.7s var(--ease-out);
}

.site-header.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.site-header.is-appearing {
  animation: headerAppear 0.9s var(--ease-out) both;
}

@keyframes headerAppear {
  from {
    opacity: 0;
    transform: translateY(-14px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 既定（地が赤系のとき）：白文字。.is-on-light が付くと赤文字に反転 */
.brand-mark {
  display: inline-block;
  font-family: var(--font-display);
  font-size: clamp(15px, 1.3vw, 17px);
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--cream);
  white-space: nowrap;
  transform: scaleX(1.2);
  transform-origin: left center;
  transition: color 0.35s var(--ease-soft);
}

.site-header nav ul {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: clamp(6px, 1vw, 9px);
  list-style: none;
}

.site-header nav li,
.site-header nav a {
  white-space: nowrap;
}

.site-header nav a {
  position: relative;
  display: inline-block;
  font-size: clamp(13px, 1.05vw, 14.5px);
  letter-spacing: 0.12em;
  color: var(--cream);
  opacity: 1;
  padding-bottom: 3px;
  transform: scaleX(1.2);
  transform-origin: right center;
  transition: color 0.35s var(--ease-soft),
    transform 0.35s var(--ease-soft);
}

.site-header nav a:hover {
  transform: scaleX(1.2);
}

.site-header nav a[href="#Timetable"] {
  margin-right: -0.18em;
}

.site-header nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0;
  height: 1px;
  background: var(--gold);
  transition: right 0.35s var(--ease-out);
}

.site-header nav a:hover::after {
  right: 0;
}

@media (hover: none) {
  .site-header nav a:hover::after {
    right: 100%;
  }

  .site-header nav a.is-tapped::after {
    right: 0;
  }
}

/* 背後が白系（Access / Credit）のときは赤文字に反転 */
.site-header.is-on-light .brand-mark,
.site-header.is-on-light nav a {
  color: var(--red-ink);
}


/* ===================================================================
   HERO ZONE — Top + Overview を貫く共通の背景模様
=================================================================== */

.hero-zone {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  color: var(--cream);
  background: linear-gradient(180deg, var(--red) 0%, var(--red-deep) 100%);
}

/* 背景にうっすら浮かぶロゴ模様（白・透明度10%）。
   横は画面中央、縦はTopセクションの中央に正確に重なる位置に固定。
   画面横幅に連動して拡大縮小し、画像1枚分の余韻がOverview上部まで自然に続く。 */
.hero-zone::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("logo.svg");
  background-repeat: no-repeat;
  background-position: center calc(50svh - 60vw);
  background-size: 120vw;
  filter: brightness(0) invert(1);
  opacity: 0.1;
  pointer-events: none;
  z-index: 0;
}

.hero-zone>section {
  position: relative;
  z-index: 1;
}


/* ===================================================================
   TOP — ファーストビュー
=================================================================== */

.Top {
  width: 100%;
  height: 100vh;
  height: 100svh;
  min-height: 560px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.Top .hero {
  position: absolute;
  inset: 0;
  max-width: 1440px;
  margin: 0 auto;
  padding: clamp(38px, 5vw, 64px) clamp(28px, 5.4vw, 88px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  pointer-events: none;
}

/* モバイル専用グループ。PCではグリッドに干渉しないよう透過させる */
.hero-top-group {
  display: contents;
}

.Title {
  align-self: flex-start;
  pointer-events: auto;
}

.Title img {
  width: clamp(230px, 22vw, 340px);
  height: auto;
  filter: brightness(0) invert(1);
}

/* ロゴは画面（Top）の縦横中央に正確に固定。Title/Dateのレイヤーとは独立 */
.Logo {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  justify-content: center;
  align-items: center;
  pointer-events: none;
}

/* ゆっくり回転＋スクロールで一瞬加速する祭りの鼓動 */
.logo-spin {
  width: clamp(340px, 47vw, 620px);
  transform: rotate(var(--spin-angle, 0deg));
  animation: logoRotate 48s linear infinite;
  transform-origin: 50% 50%;
}

.logo-spin.is-pulsing {
  animation: logoBurst 1.8s var(--ease-soft) 1;
}

.logo-spin img {
  width: 100%;
  height: auto;
  filter: brightness(0) invert(1) url("#wobble");
}

@keyframes logoRotate {
  from {
    transform: rotate(var(--spin-angle, 0deg));
  }

  to {
    transform: rotate(calc(var(--spin-angle, 0deg) + 360deg));
  }
}

/* スクロールで「太鼓を打つ」ように一拍加速してから定速回転に戻す */
@keyframes logoBurst {
  from {
    transform: rotate(var(--spin-angle, 0deg));
  }

  to {
    transform: rotate(calc(var(--spin-angle, 0deg) + 130deg));
  }
}

.Date {
  align-self: flex-end;
  display: flex;
  justify-content: flex-end;
  pointer-events: auto;
}

.Date img {
  width: clamp(240px, 22vw, 316px);
  height: auto;
  filter: none;
}


/* ===================================================================
   OVERVIEW — 説明文
=================================================================== */

.Overview-section {
  width: 100%;
}

.Overview {
  max-width: 780px;
  margin: 0 auto;
  padding: clamp(124px, 15vw, 204px) clamp(28px, 5vw, 84px) clamp(104px, 12vw, 156px);
}

/* 開催概要：チケットの半券のような実在感を罫線と数字組版で */
.overview-meta {
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin-bottom: clamp(48px, 7vw, 76px);
  padding-bottom: clamp(26px, 3.6vw, 38px);
  border-bottom: 1px solid var(--cream-faint);
  font-size: clamp(12.5px, 1vw, 13.5px);
  letter-spacing: 0.04em;
  line-height: 1.95;
  color: var(--cream);
}

.overview-meta-title {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--cream);
  margin-bottom: 4px;
  transform-origin: left center;
}

/* セクション見出し：太字「本題」+ 細字「接続語」でウェイトの強弱をつくる */
section h2 {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(20px, 2vw, 24px);
  letter-spacing: 0.06em;
  line-height: 1.48;
  margin-bottom: clamp(34px, 4.6vw, 48px);
}

section h2 .heading-main {
  display: inline-block;
  transform-origin: left center;
}

section h2 .toha {
  display: inline-block;
  font-weight: 400;
  font-size: clamp(15px, 1.2vw, 18px);
  color: var(--cream);
  letter-spacing: 0.08em;
  margin-left: 0.15em;
}

.Overview p {
  transform-origin: left center;
  font-size: clamp(16px, 1.35vw, 18px);
  line-height: 2;
  letter-spacing: 0.02em;
  margin-bottom: clamp(42px, 5.2vw, 58px);
}

.Overview p.lead {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0 0.35em;
  margin-top: 0;
}

/* テーマの一句：本文の中で唯一、太く大きく際立たせる */
.Overview .theme {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(18px, 1.5vw, 24px);
  letter-spacing: 0.1em;
  line-height: 1;
  color: var(--cream);
  margin: 0;
  text-shadow: 0 0 18px rgba(217, 164, 65, 0.24);
  transform-origin: left center;
}

.notice {
  width: 100%;
  margin-top: clamp(40px, 5.6vw, 56px);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 6px;
  padding: clamp(22px, 2.8vw, 30px) clamp(24px, 3.2vw, 36px);
  border: 1px solid var(--cream);
  background: transparent;
}

.notice-label {
  display: inline-block;
  font-family: var(--font-display);
  font-size: clamp(12px, 1vw, 16px);
  letter-spacing: 0.32em;
  color: var(--gold);
  transform-origin: center;
}

.notice-body {
  display: inline-block;
  font-size: clamp(18px, 1.6vw, 20px);
  letter-spacing: 0.06em;
  white-space: nowrap;
  transform-origin: center;
}


/* ===================================================================
   共通セクションラッパー（Access / Credit / Form）
=================================================================== */

.section-inner {
  max-width: 920px;
  margin: 0 auto;
  padding: clamp(88px, 10vw, 128px) clamp(28px, 5vw, 84px) clamp(84px, 10vw, 124px);
}

/* セクション見出しの上に、装飾的な短い飾り罫を添える */
.section-inner h2::before {
  content: "";
  display: block;
  width: 40px;
  height: 2px;
  background: var(--gold);
  margin-bottom: clamp(18px, 2.4vw, 24px);
  transform: scaleY(0.82);
  transform-origin: left center;
}

/* ===================================================================
   TIMETABLE
=================================================================== */

.Timetable {
  background: #ffffff;
  color: var(--red-ink);
  border-top: 1px solid var(--paper-line);
}

.timetable-wrap {
  width: 100%;
  margin-top: clamp(10px, 1.6vw, 18px);
  border: 1px solid var(--paper-line);
  background: #fff;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.timetable-wrap img {
  width: 100%;
  min-width: 720px;
  height: auto;
  display: block;
}

.timetable-notes {
  display: grid;
  gap: 0.5em;
  margin-top: clamp(16px, 2vw, 22px);
  font-size: clamp(13px, 1.05vw, 15px);
  line-height: 1.75;
  letter-spacing: 0.03em;
  color: var(--ink);
}


/* ===================================================================
   ACCESS
=================================================================== */

.Access {
  background: #ffffff;
  color: var(--red-ink);
  border-top: 1px solid var(--paper-line);
}

.map-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  margin-top: clamp(10px, 1.6vw, 18px);
  margin-bottom: clamp(36px, 5vw, 52px);
  border: 1px solid var(--paper-line);
  background: #fff;
  box-shadow: 0 18px 48px rgba(87, 21, 12, 0.12);
  overflow: hidden;
}

.map-wrap iframe {
  width: 100%;
  height: 100%;
  display: block;
}

.access-info .address {
  transform: scaleX(1.02);
  transform-origin: left center;
  font-size: clamp(14.5px, 1.15vw, 16px);
  line-height: 1.95;
  letter-spacing: 0.03em;
  margin-bottom: clamp(30px, 4vw, 42px);
  padding-bottom: clamp(26px, 3.4vw, 36px);
  border-bottom: 1px solid var(--paper-line);
}

.access-list {
  display: flex;
  flex-direction: column;
  gap: clamp(22px, 3vw, 28px);
}

.access-row {
  transform: scaleX(1.02);
  transform-origin: left center;
  font-size: clamp(14px, 1.15vw, 15.5px);
  line-height: 1.95;
  letter-spacing: 0.03em;
  color: var(--ink);
}

.access-row:first-child {
  font-size: clamp(15.5px, 1.32vw, 18px);
  font-weight: 600;
}

/* ===================================================================
   CREDIT
=================================================================== */

.Credit {
  background: #ffffff;
  color: var(--red-ink);
  border-top: 1px solid var(--paper-line);
}

.credit-list {
  margin-top: clamp(10px, 1.6vw, 18px);
  display: flex;
  flex-direction: column;
}

.credit-row {
  display: grid;
  grid-template-columns: clamp(108px, 15vw, 160px) 1fr;
  column-gap: clamp(20px, 2.8vw, 36px);
  padding: clamp(20px, 2.6vw, 26px) 0;
  border-bottom: 1px solid var(--paper-line);
}

.credit-row:first-child {
  border-top: 1px solid var(--paper-line);
}

.credit-row dt {
  display: inline-block;
  font-family: var(--font-display);
  font-size: clamp(13px, 1vw, 14.5px);
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--gold);
  padding-top: 0.15em;
  transform-origin: left center;
}

.credit-row dd {
  transform: scaleX(1.02);
  transform-origin: left center;
  font-size: clamp(14px, 1.15vw, 15.5px);
  line-height: 1.9;
  letter-spacing: 0.03em;
  color: var(--ink);
}

.credit-note {
  margin-top: clamp(14px, 1.8vw, 20px);
  font-size: clamp(12px, 0.95vw, 14px);
  line-height: 1.7;
  letter-spacing: 0.04em;
  color: var(--ink);
  text-align: right;
}

.Credit .logos {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: clamp(44px, 5.4vw, 64px);
  width: 100%;
}

.Credit .logos img {
  flex: 0 0 auto;
  height: auto;
  object-fit: contain;
}

.Credit .logos .logo-tamabi {
  width: 72px;
}

.Credit .logos .logo-koeki {
  width: 220px;
}

.Credit .logos .logo-showakai {
  width: 68px;
}

.Credit .logos .logo-goto {
  width: 160px;
}

.Credit .logos .logo-gu {
  width: 65px;
}


/* ===================================================================
   FORM
=================================================================== */

.Form {
  background: var(--red-deep);
  color: var(--cream);
  border-top: 1px solid rgba(255, 244, 232, 0.18);
}

.Form .section-inner {
  padding-bottom: clamp(108px, 14vw, 168px);
}

.form-text {
  --fade-scale-x: 1.03;
  transform-origin: left center;
  font-size: clamp(15px, 1.3vw, 16.5px);
  line-height: 2.1;
  letter-spacing: 0.03em;
  color: var(--cream);
  margin-top: clamp(10px, 1.6vw, 18px);
}

/* お問い合わせフォームへのリンク */
.contact-link {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(12px, 1.6vw, 16px);
  margin-top: clamp(40px, 5.6vw, 56px);
  padding: clamp(22px, 2.8vw, 30px) clamp(24px, 3.2vw, 36px);
  border: 1px solid var(--cream);
  background: transparent;
  font-family: var(--font-display);
  font-size: clamp(14px, 1.25vw, 16px);
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--cream);
  text-align: center;
  transform-origin: center;
  transition: background-color 0.35s var(--ease-soft),
    color 0.35s var(--ease-soft);
}

.contact-link:hover {
  background-color: var(--cream);
  color: var(--red-ink);
}

/* X / Instagram アイコンリンク */
.social-links {
  display: flex;
  align-items: center;
  gap: clamp(26px, 3.2vw, 36px);
  margin-top: clamp(44px, 6vw, 60px);
}

.social-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  opacity: 0.72;
  transition: opacity 0.3s var(--ease-soft);
}

.social-links a:hover {
  opacity: 1;
}

.social-links img {
  width: 27px;
  height: 27px;
  filter: brightness(0) invert(1);
}

.page-note {
  background: var(--red-deep);
  color: var(--cream);
  padding-bottom: clamp(30px, 4vw, 44px);
}

.page-note p {
  max-width: 920px;
  margin: 0 auto;
  padding-inline: clamp(28px, 5vw, 84px);
  font-size: clamp(13px, 1.05vw, 15px);
  line-height: 1.75;
  letter-spacing: 0.03em;
  text-align: left;
}

footer {
  display: flex;
  justify-content: center;
  padding: 28px 22px 34px;
  background: var(--red-deep);
  color: rgba(255, 244, 232, 0.68);
  font-size: 12px;
  letter-spacing: 0.08em;
  border-top: 1px solid rgba(255, 244, 232, 0.16);
}

footer small {
  font: inherit;
}

@media (hover: hover) {
  .map-wrap {
    transition: transform 0.45s var(--ease-soft), box-shadow 0.45s var(--ease-soft);
  }

  .map-wrap:hover {
    transform: translateY(-2px);
    box-shadow: 0 22px 58px rgba(87, 21, 12, 0.16);
  }
}


/* ===================================================================
   MOBILE
=================================================================== */

@media (max-width: 850px) {

  html,
  body {
    background: var(--red);
  }

  .site-header {
    padding: 16px 20px;
    background: none;
  }

  .site-header nav ul {
    gap: 6px;
  }

  .site-header nav a {
    font-size: 11.5px;
    letter-spacing: 0.1em;
    transform: scaleX(1.14) scaleY(0.96);
  }

  .site-header nav a:hover {
    transform: scaleX(1.14) scaleY(0.96);
  }

  .site-header nav a[href="#Timetable"] {
    margin-right: -0.14em;
  }

  .hero-zone::before {
    background-position: center calc(50svh - 90vw);
    background-size: 180vw;
  }


  .Top {
    height: 100vh;
    height: 100svh;
  }

  .Top .hero {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    padding: clamp(38px, 10vw, 58px) 24px clamp(46px, 12vw, 70px);
    pointer-events: none;
  }

  .hero-top-group {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    align-self: flex-start;
    gap: 12px;
  }

  .Title img {
    width: clamp(178px, 49vw, 244px);
  }

  .Date img {
    width: clamp(184px, 49vw, 250px);
  }

  .logo-spin {
    width: clamp(240px, 70vw, 360px);
  }

  .Overview {
    padding: 92px 24px 72px;
  }

  .overview-meta {
    font-size: 12px;
  }

  section h2 {
    font-size: 21px;
  }

  section h2 .toha {
    font-size: 14px;
  }

  .Overview p {
    font-size: 15px;
    line-height: 2.12;
    margin-bottom: 40px;
    --fade-scale-x: 1.01;
  }

  .Overview .theme {
    font-size: 18px;
    line-height: 1.45;
  }

  .notice {
    padding-inline: 14px;
  }

  .notice-body {
    font-size: clamp(14px, 4vw, 18px);
    letter-spacing: 0.02em;
    transform: scaleX(1.02);
  }

  .access-info .address,
  .access-row,
  .credit-row dd {
    transform: scaleX(1.01);
  }

  .form-text {
    --fade-scale-x: 1.01;
  }

  .contact-link {
    transform: none;
  }

  .Credit .logos {
    justify-content: space-between;
  }

  .Credit .logos .logo-tamabi {
    width: clamp(20px, 10vw, 68px);
  }

  .Credit .logos .logo-koeki {
    width: clamp(95px, 25vw, 210px);
  }

  .Credit .logos .logo-showakai {
    width: clamp(18px, 9vw, 64px);
  }

  .Credit .logos .logo-goto {
    width: clamp(72px, 18vw, 150px);
  }

  .Credit .logos .logo-gu {
    width: clamp(18px, 8vw, 60px);
  }

  .timetable-wrap {
    margin-inline: -22px;
    width: calc(100% + 44px);
    border-left: none;
    border-right: none;
  }

  .timetable-wrap img {
    min-width: 760px;
  }

  .timetable-notes {
    margin-top: 26px;
  }

  .social-links a {
    opacity: 1;
  }

  .page-note p {
    padding-inline: 22px;
  }

  .section-inner {
    padding: 60px 22px 68px;
  }

  .credit-row {
    grid-template-columns: 1fr;
    row-gap: 6px;
  }

  .map-wrap {
    aspect-ratio: 1 / 1;
  }

  .Form .section-inner {
    padding-bottom: 84px;
  }
}