/* 音楽サロンScale 2027年 年間スポンサー募集 LP
   チャコール地 × 琥珀色のアクセント、明朝体（本文 Noto Serif JP／見出し Zen Old Mincho／数字 Cormorant Garamond）。写真は原比率で表示する。 */

:root {
  --dark: #2b2b31;    /* 暖灰のチャコール。黒に寄せない */
  --dark-2: #36363d;
  --dark-3: #41414a;
  --paper: #f5f1e8;
  --paper-deep: #ebe5d8;
  --ink: #17171a;
  --ink-2: #4a4944;
  --ink-3: #605e57;  /* 明地の補助文字。#f5f1e8 上で4.5:1以上 */
  --line-dark: rgba(255, 255, 255, 0.16);
  --line-paper: rgba(23, 23, 26, 0.14);
  --accent: #e9a33a;      /* 琥珀。暗地での文字・ボタン */
  --accent-deep: #9a5f0c; /* 明地での小さな文字 */
  --white: #fbf9f4;
  --font-jp: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", "Zen Old Mincho", serif;
  --font-display: "Zen Old Mincho", "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-num: "Cormorant Garamond", "Zen Old Mincho", "Noto Serif JP", serif;
  --wrap: 1200px;
  --gutter: clamp(20px, 4vw, 48px);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-jp);
  font-weight: 500;
  color: var(--ink);
  background: var(--dark);
  line-height: 1.8;
  overflow-wrap: anywhere;
}
img { display: block; max-width: 100%; height: auto; }
figure { margin: 0; }
h1, h2, h3, h4 { margin: 0; font-family: var(--font-display); font-weight: 900; line-height: 1.3; letter-spacing: 0.03em; }
p, ul, ol, dl { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; }
small { font-size: 0.8em; }

.skip { position: absolute; left: -999px; top: 8px; background: var(--accent); color: var(--ink); padding: 8px 12px; z-index: 100; }
.skip:focus { left: 8px; }

.wrap { width: min(var(--wrap), 100% - var(--gutter) * 2); margin-inline: auto; }
.pc { display: inline; }
.sp { display: none; }

/* ---------- ボタン ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 52px; padding: 0 28px;
  font-weight: 700; font-size: 16px; text-decoration: none; border-radius: 4px;
  border: 2px solid transparent; transition: transform 0.15s, background 0.15s, color 0.15s;
}
.btn:hover { transform: translateY(-1px); }
.btn-accent { background: var(--accent); color: var(--ink); border-color: var(--accent); }
.btn-accent:hover { background: #f2b355; }
.btn-ghost { color: var(--white); border-color: rgba(255, 255, 255, 0.5); }
.btn-ghost:hover { border-color: var(--white); background: rgba(255, 255, 255, 0.08); }
.btn-dark { background: var(--ink); color: var(--white); border-color: var(--ink); }
.btn-dark:hover { background: #2a2a2e; }
.btn-outline-light { color: var(--white); border-color: rgba(255, 255, 255, 0.45); }
.btn-outline-light:hover { border-color: var(--white); background: rgba(255, 255, 255, 0.08); }
.btn-outline-dark { color: var(--ink); border-color: rgba(23, 23, 26, 0.5); }
.btn-outline-dark:hover { border-color: var(--ink); background: rgba(23, 23, 26, 0.05); }
.btn-small { min-height: 42px; padding: 0 18px; font-size: 14px; }
.btn-large { min-height: 60px; padding: 0 36px; font-size: 17px; }

.text-link {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 700; text-decoration: none; color: var(--ink);
  border-bottom: 2px solid var(--accent); padding-bottom: 2px;
}
.text-link::after { content: "→"; color: var(--accent-deep); }
.text-link-light { color: var(--white); }
.text-link-light::after { color: var(--accent); }

/* ---------- ヘッダー ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 24px;
  padding: 12px var(--gutter);
  background: rgba(43, 43, 49, 0.94); backdrop-filter: blur(8px);
  color: var(--white); border-bottom: 1px solid var(--line-dark);
}
.brand { display: flex; flex-direction: column; text-decoration: none; line-height: 1.2; margin-right: auto; }
.brand-main { font-family: var(--font-display); font-weight: 900; font-size: 18px; letter-spacing: 0.04em; }
.brand-sub { font-size: 11px; color: var(--accent); font-weight: 700; letter-spacing: 0.08em; }
.global-nav { display: flex; gap: 22px; }
.global-nav a { font-size: 14px; font-weight: 700; text-decoration: none; opacity: 0.85; }
.global-nav a:hover { opacity: 1; color: var(--accent); }

/* ---------- ヒーロー ---------- */
.hero {
  display: grid;
  /* 文字680px・写真1024px（元画像幅）を上限にした2列を中央に置く。背景は全幅のまま。1704px未満では2列が画面を分け合い、以上では左右に等しい余白が残る */
  grid-template-columns: minmax(0, 680px) minmax(0, 1024px);
  grid-template-areas: "copy photo";
  justify-content: center;
  align-items: center;
  color: var(--white);
  background: var(--dark);
  position: relative;
}
.hero-copy {
  grid-area: copy;
  padding: clamp(40px, 7vw, 96px) clamp(24px, 3vw, 48px) clamp(40px, 7vw, 96px) var(--gutter); /* 右余白を3vwに抑え、H1の9文字×4vwが1025px以上のどの幅でも1行に収まるようにする */
  width: 100%;
}
.eyebrow {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 0.12em;
  color: var(--accent); border-left: 3px solid var(--accent); padding-left: 10px; margin-bottom: 22px;
}
.hero h1 {
  font-size: clamp(36px, 4vw, 58px); line-height: 1.2; letter-spacing: 0.005em; /* 1440pxで9文字×57.6pxを1行に収める */
  margin-bottom: 26px;
}
.hero-lead { font-size: clamp(15px, 1.25vw, 18px); line-height: 2; color: rgba(251, 249, 244, 0.86); max-width: 34em; margin-bottom: 32px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
/* キービジュアル（1024×572、文字入り）は原比率で全幅表示し、どの幅でも切らない。注記は画像に重ねず下に置く */
.hero-photo { grid-area: photo; position: relative; align-self: center; width: 100%; max-width: 1024px; }
.hero-photo img { width: 100%; height: auto; display: block; }
.hero-photo figcaption {
  font-size: 12px; color: rgba(251, 249, 244, 0.7); letter-spacing: 0.04em;
  padding: 8px 16px 0; text-align: right;
}

/* ---------- セクション共通 ---------- */
.section { padding: clamp(64px, 9vw, 128px) 0; }
.section-paper { background: var(--paper); color: var(--ink); }
.section-paper-deep { background: var(--paper-deep); }
.section-dark { background: var(--dark); color: var(--white); }
.section-head { margin-bottom: clamp(36px, 5vw, 64px); }
.section-head-row { display: grid; grid-template-columns: 1fr auto; gap: 32px 64px; align-items: end; }
.section-note { font-size: 15px; line-height: 1.9; color: inherit; opacity: 0.8; max-width: 36em; }
.section-num {
  font-family: var(--font-num); font-weight: 600; font-size: 22px; letter-spacing: 0.08em; line-height: 1;
  color: var(--accent-deep); display: flex; align-items: center; gap: 14px; margin-bottom: 20px;
}
.section-dark .section-num { color: var(--accent); }
.section-num span { font-family: var(--font-jp); font-size: 14px; font-weight: 700; letter-spacing: 0.1em; color: inherit; }
.section-num::after { content: ""; flex: 0 0 48px; height: 2px; background: currentColor; opacity: 0.6; }
.section-num-accent { color: var(--accent); }
.section h2 { font-size: clamp(28px, 3.6vw, 48px); line-height: 1.3; }
.lead { font-size: clamp(16px, 1.4vw, 19px); line-height: 2; font-weight: 700; }
.sub-title { font-size: clamp(20px, 2vw, 26px); margin: clamp(56px, 7vw, 88px) 0 28px; display: flex; align-items: center; gap: 16px; }
.sub-title::after { content: ""; flex: 1; height: 1px; background: var(--line-paper); }
.fine { font-size: 12.5px; line-height: 1.8; color: var(--ink-3); }
.section-dark .fine, .contact .fine { color: rgba(251, 249, 244, 0.78); }

/* ---------- EVENT（暗地・トークイベント告知） ---------- */
.event-lead { max-width: 42em; margin-bottom: clamp(28px, 3.5vw, 40px); color: rgba(251, 249, 244, 0.86); }
.event-facts { display: grid; grid-template-columns: 1fr 1fr; border-top: 2px solid rgba(255, 255, 255, 0.35); margin-bottom: clamp(28px, 3.5vw, 40px); }
.event-facts > div { padding: 22px 8px 22px 0; border-bottom: 1px solid var(--line-dark); }
.event-facts > div:nth-child(odd) { padding-right: 20px; }
.event-facts dt { font-size: 12px; font-weight: 700; letter-spacing: 0.1em; color: var(--accent); margin-bottom: 6px; }
.event-facts dd { margin: 0; font-family: var(--font-display); font-weight: 900; font-size: 16px; line-height: 1.6; color: var(--white); }
.event-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 18px; }
.event-figure { margin: 0 0 clamp(28px, 3.5vw, 40px); }
.event-figure img { width: 100%; height: auto; }
.event-figure figcaption { margin-top: 10px; font-size: 12px; line-height: 1.7; color: rgba(251, 249, 244, 0.7); }

/* ---------- 01 WHY ---------- */
.why-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); gap: 48px clamp(40px, 6vw, 96px); align-items: start; }
.why-text p + p { margin-top: 20px; font-size: 15.5px; color: var(--ink-2); }
.why-text .text-link { margin-top: 28px; }
.venue-facts { display: grid; grid-template-columns: 1fr 1fr; border-top: 2px solid var(--ink); }
.venue-facts > div { padding: 22px 8px 22px 0; border-bottom: 1px solid var(--line-paper); }
.venue-facts > div:nth-child(odd) { padding-right: 20px; }
.venue-facts dt { font-size: 12px; font-weight: 700; letter-spacing: 0.1em; color: var(--accent-deep); margin-bottom: 6px; }
.venue-facts dd { margin: 0; font-family: var(--font-display); font-weight: 900; font-size: 17px; line-height: 1.5; }
.venue-facts dd small { display: block; font-weight: 500; color: var(--ink-3); font-size: 12.5px; margin-top: 4px; }
/* 授業風景（Scale室内、2022-12撮影）: 本文の右に原比率で */
.venue-life { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr); gap: clamp(20px, 3vw, 40px); align-items: center; margin-top: clamp(40px, 5vw, 64px); }
.venue-life h3 { font-size: 22px; line-height: 1.5; margin-bottom: 12px; }
.venue-life p { font-size: 15px; color: var(--ink-2); line-height: 1.85; }
.venue-life figure { margin: 0; min-width: 0; }
.venue-life img { width: 100%; height: auto; display: block; background: #ddd; }
.venue-life figcaption { font-size: 12px; color: var(--ink-3); margin-top: 8px; letter-spacing: 0.02em; }
/* 書籍の帯: 同じ列を --books-copies 個並べ、トラックを1列分（-100%/列数）動かして端で途切れない無限ループにする（JS不要）。ホバー/フォーカスで一時停止。高さを揃え、縦横は原比率 */
.books-strip { margin-top: clamp(24px, 3vw, 36px); overflow: hidden; -webkit-mask-image: linear-gradient(to right, transparent, #000 6%, #000 94%, transparent); mask-image: linear-gradient(to right, transparent, #000 6%, #000 94%, transparent); }
.books-track { --books-copies: 2; display: flex; width: max-content; animation: books-scroll 80s linear infinite; will-change: transform; }
.books-strip:hover .books-track, .books-strip:focus-within .books-track { animation-play-state: paused; }
.books-copy { display: flex; gap: 20px; padding: 0 20px 0 0; margin: 0; list-style: none; }
.books-copy li { flex: none; }
.books-copy li.books-small { align-self: center; } /* 顔が分かる写真は少し小さく */
.books-copy li.books-small img { height: 238px; }
.books-copy figure { margin: 0; }
.books-copy img { height: 280px; width: auto; display: block; background: #ddd; }
.books-copy figcaption { font-size: 12px; color: var(--ink-3); margin-top: 8px; letter-spacing: 0.02em; }
@keyframes books-scroll { to { transform: translateX(calc(-100% / var(--books-copies))); } }
.support-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: clamp(20px, 3vw, 40px); }
.support-list figure { aspect-ratio: 3 / 2; overflow: hidden; margin-bottom: 18px; background: #ddd; }
.support-list img { width: 100%; height: 100%; object-fit: cover; }
.support-list li:nth-child(2) img { object-position: 50% 40%; }
.support-list h4 { font-size: 19px; margin-bottom: 8px; }
.support-list p { font-size: 15px; color: var(--ink-2); line-height: 1.85; }
.support-list p small { display: block; font-size: 12px; color: var(--ink-3); margin-top: 6px; }

/* ---------- 02 STAGE ---------- */
.stage-row { display: grid; gap: clamp(12px, 1.6vw, 20px); margin-bottom: clamp(12px, 1.6vw, 20px); }
.stage-row-1 { grid-template-columns: 1fr 0.4445fr; }
.stage-row-2 { grid-template-columns: 2fr 4.494fr 2fr; }
.stage-photo { position: relative; }
.stage-photo img { width: 100%; }
.stage-photo figcaption {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 56px 20px 18px;
  background: linear-gradient(to top, rgba(30, 30, 35, 0.88), rgba(30, 30, 35, 0));
  display: flex; flex-direction: column; gap: 2px;
}
.stage-photo figcaption strong { font-family: var(--font-num); font-weight: 600; font-size: 26px; letter-spacing: 0.04em; line-height: 1.1; }
.stage-row-1 .stage-photo:last-child figcaption strong { font-family: var(--font-display); font-weight: 900; font-size: 22px; }
.stage-photo figcaption span { font-size: 13px; opacity: 0.85; }
.photo-note { margin-top: 20px; font-size: 12.5px; color: rgba(251, 249, 244, 0.6); }
.stage-links { display: flex; flex-wrap: wrap; gap: 16px 36px; margin-top: 28px; }

/* ---------- 帯 ---------- */
.band { background: var(--accent); color: var(--ink); padding: clamp(28px, 4vw, 44px) 0; }
.band-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 20px 40px; }
.band-text { display: flex; flex-direction: column; gap: 2px; }
.band-text strong { font-family: var(--font-display); font-size: clamp(20px, 2.2vw, 28px); font-weight: 900; line-height: 1.35; letter-spacing: 0.03em; }
.band-text span { font-size: 14px; }
.band-actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- 03 BENEFIT ---------- */
.benefit-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(24px, 3vw, 40px); margin-bottom: 36px; }
.benefit { border-top: 3px solid var(--ink); padding-top: 22px; display: flex; flex-direction: column; }
.benefit-who { font-size: 13px; font-weight: 700; letter-spacing: 0.1em; color: var(--accent-deep); margin-bottom: 12px; }
.benefit h3 { font-size: clamp(22px, 2vw, 27px); margin-bottom: 18px; line-height: 1.4; }
.benefit ul { flex: 1; margin-bottom: 22px; }
.benefit li { position: relative; padding-left: 20px; font-size: 15px; line-height: 1.8; color: var(--ink-2); }
.benefit .fine { margin: 14px 0 0; }
.benefit li + li { margin-top: 8px; }
.benefit li::before { content: ""; position: absolute; left: 0; top: 0.75em; width: 10px; height: 2px; background: var(--accent-deep); }

/* ---------- 04 PLANS（明地・白カード） ---------- */
.section-plans { background: var(--paper-deep); }
.plan-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(14px, 2vw, 24px); }
.plan {
  position: relative; display: flex; flex-direction: column;
  background: #fff; border: 1px solid var(--line-paper); border-radius: 6px;
  padding: 30px 28px 28px;
}
.plan-who { font-size: 12px; font-weight: 700; letter-spacing: 0.1em; color: var(--ink-3); margin-bottom: 10px; }
.plan h3 { font-size: 24px; margin-bottom: 14px; }
.price { display: flex; align-items: baseline; gap: 6px; padding-bottom: 18px; margin-bottom: 18px; border-bottom: 1px solid var(--line-paper); }
.price small { font-size: 13px; font-weight: 700; color: var(--ink-3); }
.price .num { font-family: var(--font-num); font-weight: 700; font-size: clamp(38px, 3.4vw, 50px); line-height: 1; color: var(--accent-deep); letter-spacing: 0.01em; font-variant-numeric: lining-nums tabular-nums; }
.price .num-text { font-family: var(--font-display); font-weight: 900; font-size: 28px; }
.plan ul { flex: 1; margin-bottom: 24px; }
.plan li { position: relative; padding-left: 18px; font-size: 14.5px; line-height: 1.75; color: var(--ink-2); }
.plan li + li { margin-top: 8px; }
.plan li::before { content: ""; position: absolute; left: 0; top: 0.72em; width: 8px; height: 2px; background: var(--accent-deep); }
.plan .btn { align-self: flex-start; }
.plan-featured { background: #fdf4e4; border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent) inset; }
.plan-naming { border-style: dashed; background: transparent; }
.plan-terms { margin-top: clamp(36px, 5vw, 56px); padding: 32px clamp(24px, 3vw, 40px); border: 1px solid var(--line-paper); border-radius: 6px; background: #fff; }
.plan-terms h3 { font-size: 18px; margin-bottom: 16px; }
.plan-terms li { position: relative; padding-left: 18px; font-size: 14px; line-height: 1.8; color: var(--ink-2); }
.plan-terms li + li { margin-top: 8px; }
.plan-terms li::before { content: ""; position: absolute; left: 0; top: 0.75em; width: 8px; height: 2px; background: var(--accent-deep); }
.plan-terms .text-link { margin-top: 22px; }

/* ---------- 05 FLOW ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(20px, 3vw, 40px); counter-reset: step; }
.steps li { border-top: 2px solid var(--ink); padding-top: 20px; }
.step-num { display: block; font-family: var(--font-num); font-weight: 700; font-size: 44px; line-height: 1; color: var(--accent-deep); margin-bottom: 14px; }
.steps h3 { font-size: 20px; margin-bottom: 12px; line-height: 1.4; }
.steps p { font-size: 14.5px; line-height: 1.85; color: var(--ink-2); }

/* ---------- 06 FAQ ---------- */
.faq-layout { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.6fr); gap: 40px clamp(40px, 6vw, 96px); align-items: start; }
.faq-layout .section-head { margin-bottom: 0; }
.faq-list details { border-bottom: 1px solid var(--line-paper); }
.faq-list details:first-child { border-top: 2px solid var(--ink); }
.faq-list summary {
  cursor: pointer; list-style: none; padding: 20px 44px 20px 0; font-weight: 700; font-size: 17px; line-height: 1.6; position: relative;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "＋"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%);
  color: var(--accent-deep); font-weight: 900; font-size: 20px;
}
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { padding: 0 0 22px; font-size: 15px; line-height: 1.9; color: var(--ink-2); }

/* ---------- CONTACT ---------- */
.contact { background: var(--dark); color: var(--white); padding: clamp(72px, 10vw, 140px) 0; border-top: 6px solid var(--accent); }
.contact-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); gap: 48px clamp(40px, 6vw, 96px); align-items: start; }
.contact h2 { font-size: clamp(34px, 4.6vw, 60px); margin-bottom: 20px; }
.contact .lead { font-weight: 500; opacity: 0.88; margin-bottom: 32px; }
.contact-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 26px; }
.contact-meta { font-size: 14px; line-height: 2; opacity: 0.85; }
.contact-meta a { text-decoration: none; border-bottom: 1px solid rgba(255, 255, 255, 0.4); }
.contact-docs { background: var(--dark-2); border: 1px solid var(--line-dark); border-radius: 6px; padding: 32px clamp(24px, 3vw, 36px); }
.contact-docs h3 { font-size: 20px; margin-bottom: 10px; }
.contact-docs > p { font-size: 14.5px; line-height: 1.8; opacity: 0.85; margin-bottom: 20px; }
.doc-list li + li { margin-top: 10px; }
.doc-list a {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 14px 18px; border: 1px solid rgba(255, 255, 255, 0.3); border-radius: 4px;
  text-decoration: none; font-weight: 700; font-size: 16px;
}
.doc-list a:hover { border-color: var(--accent); color: var(--accent); }
.doc-list small { font-family: var(--font-num); font-weight: 600; font-size: 14px; letter-spacing: 0.08em; opacity: 0.8; }
.contact-docs .fine { margin-top: 18px; }

/* ---------- フッター ---------- */
.site-footer { background: #222227; color: rgba(251, 249, 244, 0.75); padding: 48px 0 110px; font-size: 13.5px; line-height: 1.9; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 24px 40px; }
.footer-brand { font-family: var(--font-display); font-weight: 900; font-size: 17px; color: var(--white); margin-bottom: 6px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 28px; }
.footer-links a { text-decoration: none; border-bottom: 1px solid rgba(255, 255, 255, 0.3); }
.copyright { text-align: center; font-size: 12px; margin-top: 32px; opacity: 0.6; }

/* ---------- スマホ用固定バー ---------- */
.mobile-bar {
  display: none; position: fixed; left: 0; right: 0; bottom: 0; z-index: 60;
  background: rgba(43, 43, 49, 0.97); border-top: 1px solid var(--line-dark);
  padding: 10px 12px calc(10px + env(safe-area-inset-bottom));
  gap: 10px; transition: transform 0.25s;
}
.mobile-bar a { flex: 1; text-align: center; min-height: 46px; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 14px; text-decoration: none; color: var(--white); border: 1px solid rgba(255, 255, 255, 0.45); border-radius: 4px; }
.mobile-bar a.is-accent { background: var(--accent); color: var(--ink); border-color: var(--accent); }
.mobile-bar.is-hidden { transform: translateY(110%); }

/* ============ 1025〜1200px: ヒーローのコピー列と見出し行が狭くなる帯域 ============ */
@media (min-width: 1025px) and (max-width: 1200px) {
  .section-head-row .section-note { max-width: 24em; } /* 右列を狭め、11文字の見出しを2行に保つ */
}

/* ============ タブレット ============ */
@media (max-width: 1024px) {
  .global-nav { display: none; }
  /* タブレットは写真を上に。横写真を全幅・原比率で見せる */
  .hero { grid-template-columns: 1fr; grid-template-areas: "photo" "copy"; }
  .hero-copy { padding: 40px var(--gutter) 48px; max-width: none; justify-self: stretch; }
  .hero h1 { font-size: clamp(34px, 6vw, 52px); }
  .hero-lead { max-width: 40em; }
  .section-head-row { grid-template-columns: 1fr; align-items: start; }
  .why-grid { grid-template-columns: 1fr; }
  .venue-life { grid-template-columns: 1fr; }
  .books-copy img { height: 240px; }
  .books-copy li.books-small img { height: 204px; }
  .venue-life h3 { font-size: 20px; }
  .venue-life h3 br { display: none; }
  .support-list { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .support-list h4 { font-size: 17px; }
  .benefit-grid { grid-template-columns: 1fr; gap: 28px; }
  .benefit h3 br { display: none; }
  .plan-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .faq-layout { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

/* ============ スマートフォン ============ */
@media (max-width: 760px) {
  html { scroll-padding-top: 70px; }
  .pc { display: none; }
  .sp { display: inline; }
  .site-header { padding: 10px 16px; gap: 12px; }
  .brand-main { font-size: 16px; }
  .brand-sub { font-size: 10px; }

  .hero-copy { padding: 36px 20px 40px; }
  .hero h1 { font-size: clamp(32px, 9.2vw, 40px); line-height: 1.2; margin-bottom: 18px; }
  .hero-lead { font-size: 15px; line-height: 1.9; margin-bottom: 24px; }
  .hero-actions .btn { flex: 1 1 100%; }
  .event-facts { grid-template-columns: 1fr 1fr; }
  .event-facts dd { font-size: 15px; }
  .event-actions .btn { flex: 1 1 100%; }
  .hero-photo figcaption { font-size: 11px; padding: 6px 20px 0; }

  .section { padding: 60px 0; }
  .section h2 { font-size: 23px; letter-spacing: 0.01em; /* 15文字行を350px幅に収める */ }
  .lead { font-size: 16px; }
  .venue-facts { grid-template-columns: 1fr 1fr; }
  .venue-facts dd { font-size: 15px; }
  .venue-life { gap: 16px; }
  .books-track { animation-duration: 55s; }
  .books-copy { gap: 12px; padding-right: 12px; }
  .books-copy img { height: 190px; }
  .books-copy li.books-small img { height: 162px; }
  .books-copy figcaption { font-size: 11px; }
  .venue-life h3 { font-size: 19px; }
  .venue-life figcaption { font-size: 11px; }
  .support-list { grid-template-columns: 1fr; gap: 28px; }
  .support-list figure { aspect-ratio: 16 / 10; }

  .stage-row-1 { grid-template-columns: 1fr; }
  .stage-row-2 { grid-template-columns: 1fr 1fr; }
  .stage-row-2 .stage-photo:nth-child(2) { grid-column: 1 / -1; order: -1; }
  .stage-photo figcaption { padding: 44px 14px 14px; }
  .stage-photo figcaption strong { font-size: 22px; }
  .stage-links { flex-direction: column; gap: 12px; }

  .band-inner { flex-direction: column; align-items: stretch; }
  .band-actions .btn { flex: 1; }

  .benefit h3 { font-size: 21px; }
  .benefit h3 br { display: inline; }

  .plan-grid { grid-template-columns: 1fr; gap: 18px; }
  .plan { padding: 26px 20px 24px; }
  .plan h3 { font-size: 22px; }
  .plan-featured { margin-top: 10px; } /* スマホでも金額順を保つ（30万円を先頭にしない） */
  .plan-terms { padding: 24px 20px; }

  .steps { grid-template-columns: 1fr; gap: 28px; }
  .steps h3 br { display: none; }

  .faq-list summary { font-size: 15.5px; padding-right: 36px; }

  .contact h2 { font-size: 34px; }
  .contact-actions .btn { flex: 1 1 100%; }
  .contact-meta { font-size: 13.5px; }

  .footer-inner { flex-direction: column; }
  .footer-links { flex-direction: column; gap: 10px; }

  .mobile-bar { display: flex; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  /* 帯は動かさず、1列目の全9枚を折返しグリッドで見せる */
  .books-strip { -webkit-mask-image: none; mask-image: none; }
  .books-track { animation: none; width: auto; will-change: auto; }
  .books-copy { flex-wrap: wrap; justify-content: center; padding-right: 0; }
  .books-copy li.books-small { align-self: auto; }
  .books-copy[aria-hidden="true"] { display: none; }
  .btn, .mobile-bar { transition: none; }
}