/* =========================================================
   焙煎所 茜 -AKANE ROASTERY-  /  style.css
   世界観：火・土・夜明け / 暖色×明朝太め×紙質感
   ========================================================= */

/* ---------- Design Tokens ---------- */
:root {
  /* color */
  --c-primary: #3A2A1E;
  --c-secondary: #7C5A3C;
  --c-accent: #C2632B;
  --c-accent-dark: #A8511F;
  /* AA(4.5:1)を満たすテキスト/小要素用のさらに濃いアクセント
     #8F410F は bg #F4EDE2 上で約5.0、alt-bg #EBE0CF 上で約4.6、white #FBF7EF 上で約5.4。
     白文字を載せる背景としても #8F410F on #FBF7EF = 約5.4 でAA達成。 */
  --c-accent-text: #8F410F;
  --c-bg: #F4EDE2;
  --c-bg-alt: #EBE0CF;
  --c-text: #2B2017;
  --c-muted: #6B5A48;
  --c-line: rgba(58, 42, 30, 0.14);
  --c-white: #FBF7EF;

  /* type */
  --ff-head: "Shippori Mincho B1", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --ff-body: "Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", sans-serif;

  /* spacing */
  --space-section: clamp(4.5rem, 9vw, 8rem);
  --container: 1080px;
  --container-narrow: 760px;

  /* radius / shadow */
  --radius: 6px;
  --radius-lg: 14px;
  --shadow-sm: 0 4px 16px rgba(58, 42, 30, 0.08);
  --shadow-md: 0 14px 40px rgba(58, 42, 30, 0.14);
  --shadow-lg: 0 26px 70px rgba(58, 42, 30, 0.22);

  /* motion */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --header-h: 72px;
}

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

* { margin: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--ff-body);
  font-size: 16px;
  line-height: 1.9;
  color: var(--c-text);
  background-color: var(--c-bg);
  /* ごく薄いペーパーテクスチャ(noise) */
  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='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.045'/%3E%3C/svg%3E");
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }

ul { list-style: none; padding: 0; }

input, textarea, select { font: inherit; color: inherit; }

h1, h2, h3, h4 {
  font-family: var(--ff-head);
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: 0.04em;
}

/* focus ring */
:focus-visible {
  outline: 3px solid var(--c-accent);
  outline-offset: 3px;
  border-radius: 3px;
}
/* アンカー遷移でプログラム的にフォーカスする大ブロック（#main・各section）には
   太い可視枠を出さない。インタラクティブ要素のキーボードフォーカスリングは維持される。 */
.focus-target:focus,
.focus-target:focus-visible {
  outline: none;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -100px;
  background: var(--c-primary);
  color: var(--c-white);
  padding: 0.6rem 1rem;
  border-radius: var(--radius);
  z-index: 1000;
  transition: top 0.2s var(--ease);
}
.skip-link:focus { top: 1rem; }

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 2.5rem);
}
.container-narrow { max-width: var(--container-narrow); }

.section { padding-block: var(--space-section); position: relative; }

/* セクション区切りは背景色のわずかな段差で */
.alt-bg { background-color: var(--c-bg-alt); }

/* ---------- Eyebrow / Section head ---------- */
.eyebrow {
  font-family: var(--ff-body);
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--c-accent-text);
  margin-bottom: 0.9rem;
}

.section-head { max-width: 640px; margin-bottom: clamp(2.5rem, 5vw, 3.75rem); }

.section-title {
  font-size: clamp(1.75rem, 5vw, 2.85rem);
  color: var(--c-primary);
  position: relative;
}

.section-lead {
  margin-top: 1.1rem;
  color: var(--c-muted);
  font-size: clamp(0.95rem, 2.2vw, 1.05rem);
}

/* 豆モチーフ装飾 */
.section-title::after {
  content: "";
  display: block;
  width: 46px;
  height: 3px;
  margin-top: 1.1rem;
  background: var(--c-accent);
  border-radius: 2px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.7rem;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  transition: background-color 0.3s var(--ease), color 0.3s var(--ease),
              transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
  will-change: transform;
}
.btn-primary {
  /* 白文字on #8F410F = 約5.4:1 でAA達成（旧 #C2632B は3.84でFAILだった） */
  background: var(--c-accent-text);
  color: var(--c-white);
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { background: var(--c-primary); transform: translateY(-2px); box-shadow: var(--shadow-md); }

.btn-outline {
  border: 1.5px solid var(--c-secondary);
  color: var(--c-primary);
}
.btn-outline:hover { background: var(--c-primary); color: var(--c-white); border-color: var(--c-primary); transform: translateY(-2px); }

.btn-ghost {
  border: 1.5px solid rgba(251, 247, 239, 0.55);
  color: var(--c-white);
  backdrop-filter: blur(2px);
}
.btn-ghost:hover { background: var(--c-white); color: var(--c-primary); transform: translateY(-2px); }

.btn-ghost-dark {
  border: 1.5px solid var(--c-secondary);
  color: var(--c-primary);
}
.btn-ghost-dark:hover { background: var(--c-secondary); color: var(--c-white); }

.btn-block { width: 100%; }

/* ============================================================
   Header
   ============================================================ */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
}
/* scrolled時の背景・ブラーは ::before に分離。
   header 本体に backdrop-filter を置くと fixed 子孫（SPの .nav-menu ドロワー）の
   containing block が 64px のヘッダーになり、ドロワーが帯状に潰れるため。 */
.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(244, 237, 226, 0.82);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 0 var(--c-line);
  opacity: 0;
  transition: opacity 0.4s var(--ease);
}
.site-header.scrolled::before { opacity: 1; }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand { display: inline-flex; align-items: center; gap: 0.6rem; color: var(--c-primary); }
.brand-mark { color: var(--c-accent); display: inline-flex; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-jp { font-family: var(--ff-head); font-weight: 700; font-size: 1.15rem; letter-spacing: 0.06em; }
.brand-en { font-size: 0.58rem; letter-spacing: 0.28em; color: var(--c-secondary); font-weight: 700; }

/* header starts transparent: ensure brand readable on hero overlay */
.site-header:not(.scrolled) .brand,
.site-header:not(.scrolled) .nav-menu > li > a { color: var(--c-white); }
.site-header:not(.scrolled) .brand-en { color: rgba(251, 247, 239, 0.8); }
.site-header:not(.scrolled) .brand-mark { color: var(--c-accent); }

.nav-menu { display: flex; align-items: center; gap: 1.75rem; }
.nav-menu > li > a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--c-primary);
  position: relative;
  padding-block: 0.25rem;
  transition: color 0.25s var(--ease);
}
.nav-menu > li > a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 0; height: 2px;
  background: var(--c-accent);
  transition: width 0.3s var(--ease);
}
.nav-menu > li > a:not(.nav-cta):hover::after { width: 100%; }

.nav-cta {
  background: var(--c-accent);
  color: var(--c-white) !important;
  padding: 0.55rem 1.2rem;
  border-radius: var(--radius);
  font-weight: 700;
  transition: background-color 0.3s var(--ease);
}
.nav-cta:hover { background: var(--c-primary); }

/* hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px; height: 44px;
  padding: 10px;
  position: relative;
  z-index: 110;
}
.nav-toggle-bar {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--c-primary);
  border-radius: 2px;
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease), background-color 0.3s var(--ease);
}
.site-header:not(.scrolled) .nav-toggle-bar { background: var(--c-white); }

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative;
  /* svh 未対応ブラウザ向けに vh→dvh→svh のフォールバックを段階指定 */
  min-height: 100vh;
  min-height: 100dvh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: var(--c-white);
}
.hero-media { position: absolute; inset: 0; z-index: -2; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; }
.hero-overlay {
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(34,22,14,0.55) 0%, rgba(34,22,14,0.25) 40%, rgba(34,22,14,0.78) 100%),
    radial-gradient(1200px 600px at 78% 18%, rgba(194,99,43,0.5), transparent 60%);
}

.hero-steam {
  position: absolute;
  right: clamp(8%, 20vw, 24%);
  bottom: 12%;
  width: clamp(90px, 16vw, 170px);
  height: auto;
  opacity: 0.5;
}
.hero-steam .steam {
  fill: none;
  stroke: rgba(251, 247, 239, 0.8);
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-dasharray: 12 240;
  animation: steamRise 8s linear infinite;
}
.hero-steam .steam-2 { animation-delay: -2.6s; opacity: 0.7; }
.hero-steam .steam-3 { animation-delay: -5.2s; opacity: 0.55; }

@keyframes steamRise {
  0% { stroke-dashoffset: 252; opacity: 0; }
  20% { opacity: 0.8; }
  80% { opacity: 0.4; }
  100% { stroke-dashoffset: 0; opacity: 0; }
}

.hero-content { position: relative; max-width: 660px; padding-top: var(--header-h); }
.hero .eyebrow { color: #F0C39A; }
.hero-title {
  font-size: clamp(2.6rem, 9vw, 5rem);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: 0.05em;
  text-shadow: 0 2px 20px rgba(0,0,0,0.35);
}
.hero-sub {
  margin-top: 1.5rem;
  max-width: 34em;
  font-size: clamp(0.98rem, 2.4vw, 1.1rem);
  color: rgba(251, 247, 239, 0.92);
  text-shadow: 0 1px 10px rgba(0,0,0,0.3);
}
.hero-actions { margin-top: 2.25rem; display: flex; flex-wrap: wrap; gap: 1rem; }

.scroll-hint {
  position: absolute;
  left: 50%;
  bottom: 1.6rem;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.6rem;
  letter-spacing: 0.3em;
  color: rgba(251,247,239,0.8);
}
.scroll-line { width: 1px; height: 46px; background: linear-gradient(rgba(251,247,239,0.85), transparent); animation: scrollPulse 2.2s var(--ease) infinite; transform-origin: top; }
@keyframes scrollPulse { 0%,100% { transform: scaleY(0.4); opacity:0.4 } 50% { transform: scaleY(1); opacity:1 } }

/* ============================================================
   Features
   ============================================================ */
.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: clamp(2.5rem, 5vw, 3.5rem);
  padding: clamp(1.5rem, 3vw, 2rem);
  background: var(--c-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--c-line);
}
.stat { text-align: center; }
.stat-num {
  display: block;
  font-family: var(--ff-head);
  font-weight: 700;
  font-size: clamp(1.9rem, 6vw, 3rem);
  color: var(--c-accent);
  line-height: 1.1;
  letter-spacing: 0.02em;
}
.stat-label { font-size: clamp(0.7rem, 1.8vw, 0.85rem); color: var(--c-muted); }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: clamp(1rem, 2.5vw, 1.6rem);
}
.feature-card {
  background: var(--c-white);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 3vw, 2.1rem);
  box-shadow: var(--shadow-sm);
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.feature-icon {
  display: inline-flex;
  width: 56px; height: 56px;
  color: var(--c-secondary);
  margin-bottom: 1.1rem;
}
.feature-icon svg { width: 100%; height: 100%; }
.feature-title { font-size: 1.18rem; color: var(--c-primary); margin-bottom: 0.65rem; }
.feature-card p { color: var(--c-muted); font-size: 0.95rem; }

/* photo card */
.feature-photo { padding: 0; overflow: hidden; min-height: 240px; }
.feature-photo img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease); }
.feature-photo:hover img { transform: scale(1.05); }

/* ============================================================
   Pricing
   ============================================================ */
.price-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: clamp(1rem, 2.5vw, 1.6rem);
  align-items: stretch;
}
.price-card {
  position: relative;
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  padding: clamp(1.8rem, 3.5vw, 2.4rem);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.price-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.price-featured {
  background: var(--c-primary);
  color: var(--c-white);
  border-color: var(--c-primary);
  transform: translateY(-8px);
}
.price-featured:hover { transform: translateY(-12px); box-shadow: var(--shadow-lg); }
.price-badge {
  position: absolute;
  top: 1.2rem; right: 1.2rem;
  background: var(--c-accent);
  color: var(--c-white);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
}
.price-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  /* 小サイズ太字ラベルもAA(4.5:1)を満たす濃色アクセントに */
  color: var(--c-accent-text);
  margin-bottom: 0.5rem;
}
.price-featured .price-label { color: #F0C39A; }
.price-name { font-size: 1.3rem; color: var(--c-primary); margin-bottom: 1rem; }
.price-featured .price-name { color: var(--c-white); }
.price-amount { display: flex; align-items: baseline; gap: 0.3rem; margin-bottom: 1.4rem; }
.price-num { font-family: var(--ff-head); font-weight: 700; font-size: clamp(2rem, 5vw, 2.6rem); color: var(--c-accent); }
.price-featured .price-num { color: #F0C39A; }
.price-unit { font-size: 0.9rem; color: var(--c-muted); }
.price-featured .price-unit { color: rgba(251,247,239,0.7); }

.price-list { display: flex; flex-direction: column; gap: 0.7rem; margin-bottom: 1.8rem; flex-grow: 1; }
.price-list li {
  position: relative;
  padding-left: 1.6rem;
  font-size: 0.92rem;
  color: var(--c-muted);
  line-height: 1.7;
}
.price-featured .price-list li { color: rgba(251,247,239,0.85); }
/* コーヒー豆モチーフのマーカー */
.price-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.55em;
  width: 9px; height: 12px;
  border: 1.5px solid var(--c-accent);
  border-radius: 50% / 60%;
  background:
    linear-gradient(var(--c-accent), var(--c-accent)) center / 1.5px 60% no-repeat;
  transform: rotate(-20deg);
}
.price-featured .price-list li::before { border-color: #F0C39A; background: linear-gradient(#F0C39A,#F0C39A) center / 1.5px 60% no-repeat; }

/* ============================================================
   Testimonials
   ============================================================ */
.voice-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: clamp(1rem, 2.5vw, 1.6rem);
}
.voice-card {
  background: var(--c-white);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  padding: clamp(1.6rem, 3vw, 2.2rem);
  position: relative;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}
.quote-mark {
  font-family: var(--ff-head);
  font-size: 4rem;
  line-height: 0.5;
  color: var(--c-bg-alt);
  margin-bottom: 0.5rem;
}
.voice-card blockquote {
  font-size: 0.96rem;
  color: var(--c-text);
  flex-grow: 1;
  margin-bottom: 1.4rem;
}
.voice-person { display: flex; align-items: center; gap: 0.9rem; border-top: 1px solid var(--c-line); padding-top: 1.2rem; }
.voice-person img { width: 48px; height: 48px; border-radius: 50%; object-fit: cover; }
.voice-person > span { display: flex; flex-direction: column; line-height: 1.4; }
.voice-name { font-weight: 700; color: var(--c-primary); }
.voice-role { font-size: 0.78rem; color: var(--c-muted); }

/* ============================================================
   FAQ Accordion
   ============================================================ */
.accordion { display: flex; flex-direction: column; gap: 0.85rem; }
.acc-item {
  background: var(--c-white);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow 0.3s var(--ease);
}
.acc-item:hover { box-shadow: var(--shadow-sm); }
.acc-heading { margin: 0; }
.acc-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  text-align: left;
  padding: 1.15rem clamp(1.1rem, 3vw, 1.6rem);
  font-family: var(--ff-body);
}
.acc-q { font-weight: 500; font-size: clamp(0.95rem, 2.4vw, 1.05rem); color: var(--c-primary); }
.acc-icon {
  position: relative;
  flex-shrink: 0;
  width: 18px; height: 18px;
}
.acc-icon::before, .acc-icon::after {
  content: "";
  position: absolute;
  background: var(--c-accent);
  border-radius: 2px;
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}
.acc-icon::before { top: 50%; left: 0; width: 100%; height: 2px; transform: translateY(-50%); }
.acc-icon::after { left: 50%; top: 0; width: 2px; height: 100%; transform: translateX(-50%); }
.acc-trigger[aria-expanded="true"] .acc-icon::after { transform: translateX(-50%) scaleY(0); opacity: 0; }

.acc-panel {
  padding: 0 clamp(1.1rem, 3vw, 1.6rem);
  max-height: 0;
  overflow: hidden;
  /* ease-out-cubic：頭で溜めず即反応（パッと）、減速は緩やかに着地（ヌルっと）。
     --ease（ease-out-quint）は前のめりが強すぎてスナップして開くため専用指定。 */
  transition: max-height 0.5s cubic-bezier(0.33, 1, 0.68, 1), padding 0.5s cubic-bezier(0.33, 1, 0.68, 1);
}
/* 折りたたみ中は hidden 属性のまま（display:none）。
   キーボード/スクリーンリーダーから到達不可にし、aria-expanded=false と整合させる。
   開く際は JS が hidden=false にしてから高さアニメを開始する。 */
.acc-panel.open { padding-bottom: 1.3rem; }
.acc-panel p { color: var(--c-muted); font-size: 0.95rem; }

/* ============================================================
   CTA + Form
   ============================================================ */
.cta-section { position: relative; color: var(--c-white); overflow: hidden; }
.cta-bg {
  position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(150deg, rgba(34,22,14,0.92), rgba(58,42,30,0.96)),
    linear-gradient(135deg, #2B1A12, #6B3A1F 55%, #C2632B);
}
.cta-section .section-title { color: var(--c-white); }
.cta-section .section-lead { color: rgba(251,247,239,0.85); }
.cta-section .eyebrow { color: #F0C39A; }
.cta-section .section-head { margin-inline: auto; text-align: center; }
.cta-section .section-title::after { margin-inline: auto; }

.contact-form {
  background: var(--c-white);
  color: var(--c-text);
  border-radius: var(--radius-lg);
  padding: clamp(1.6rem, 4vw, 2.6rem);
  box-shadow: var(--shadow-lg);
  display: grid;
  gap: 1.2rem;
}
.field { display: flex; flex-direction: column; gap: 0.4rem; }
.field label { font-weight: 700; font-size: 0.9rem; color: var(--c-primary); }
.req {
  font-size: 0.68rem;
  /* 白文字on #8F410F = 約5.4:1 でAA達成（旧 #C2632B は3.84でFAILだった） */
  background: var(--c-accent-text);
  color: var(--c-white);
  padding: 0.05rem 0.45rem;
  border-radius: 3px;
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-left: 0.3rem;
  vertical-align: middle;
}
.field input,
.field textarea,
.field select {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 1.5px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-bg);
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.field textarea { resize: vertical; min-height: 120px; }
.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px rgba(194,99,43,0.18);
}
.field input[aria-invalid="true"],
.field textarea[aria-invalid="true"] { border-color: #B23A2E; background: #FBEDEB; }

.field-error {
  color: #B23A2E;
  font-size: 0.82rem;
  font-weight: 500;
  min-height: 0;
  line-height: 1.5;
}
.field-error:empty { display: none; }

.cta-actions { display: grid; gap: 0.8rem; margin-top: 0.4rem; }

.form-success {
  background: #EAF3E8;
  border: 1.5px solid #6FAE63;
  color: #2E5A24;
  border-radius: var(--radius);
  padding: 1rem 1.2rem;
  font-weight: 500;
  font-size: 0.92rem;
  text-align: center;
}

/* JS無効時の案内（noscript内で表示。送信ボタンの代わりに出す） */
.form-nojs-note {
  background: #F7EFE3;
  border: 1.5px solid var(--c-secondary);
  color: var(--c-primary);
  border-radius: var(--radius);
  padding: 1rem 1.2rem;
  font-weight: 500;
  font-size: 0.92rem;
  text-align: center;
}

/* ============================================================
   Footer
   ============================================================ */
.site-footer { background: var(--c-primary); color: rgba(251,247,239,0.82); padding-block: clamp(2.5rem, 5vw, 3.5rem) 1.5rem; }
.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(251,247,239,0.14);
}
.footer-logo { font-family: var(--ff-head); font-weight: 700; font-size: 1.3rem; color: var(--c-white); letter-spacing: 0.06em; }
/* secondary(#7C5A3C)は primary背景上で約2.2:1とFAIL。明るいアクセントへ変更し約8.5:1 */
.footer-en { font-size: 0.6rem; letter-spacing: 0.24em; color: #F0C39A; display: block; margin-top: 0.2rem; }
.footer-tag { margin-top: 0.7rem; font-size: 0.9rem; color: rgba(251,247,239,0.82); }
.footer-nav { display: flex; flex-direction: column; gap: 0.6rem; }
.footer-nav a { font-size: 0.9rem; transition: color 0.25s var(--ease); }
.footer-nav a:hover { color: var(--c-accent); }
.footer-info { font-size: 0.88rem; display: flex; flex-direction: column; gap: 0.5rem; }
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem;
  padding-top: 1.4rem;
  font-size: 0.78rem;
  /* 0.55→0.82 に引き上げAA(4.5:1)を余裕で確保（著作権・補足の可読性向上） */
  color: rgba(251,247,239,0.82);
}

/* ============================================================
   Mobile sticky CTA
   ============================================================ */
.sticky-cta {
  display: none;
  position: fixed;
  left: 1rem; right: 1rem; bottom: 1rem;
  z-index: 90;
  background: var(--c-accent);
  color: var(--c-white);
  text-align: center;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 0.95rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease), visibility 0.3s var(--ease);
}
/* CTAセクションが画面内に入ったらスティッキーCTAを退避（フォーム送信ボタンとの重なり回避）。
   JS の IntersectionObserver で #cta を監視して付与する。 */
.sticky-cta.is-hidden {
  opacity: 0;
  visibility: hidden;
  transform: translateY(120%);
  pointer-events: none;
}

/* ============================================================
   Reveal animation
   ============================================================ */
/* JS有効時（html.js）のみ初期非表示にする。JS無効時は本文がそのまま見える */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }
/* stagger within a grid */
.feature-grid .reveal.is-visible,
.price-grid .reveal.is-visible,
.voice-grid .reveal.is-visible { transition-delay: var(--reveal-delay, 0s); }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 860px) {
  :root { --header-h: 64px; }

  .nav-toggle { display: flex; }
  .nav-menu {
    position: fixed;
    inset: 0 0 0 auto;
    width: min(80vw, 320px);
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
    background: var(--c-bg);
    padding: calc(var(--header-h) + 1.5rem) 1.75rem 2rem;
    box-shadow: -10px 0 40px rgba(0,0,0,0.18);
    transform: translateX(100%);
    /* 閉時は visibility も隠し、Tab/スクリーンリーダーから到達不可にする */
    visibility: hidden;
    transition: transform 0.4s var(--ease), visibility 0.4s var(--ease);
    overflow-y: auto;
  }
  .nav-menu.open { transform: translateX(0); visibility: visible; }
  .nav-menu > li { width: 100%; }
  .nav-menu > li > a { display: block; color: var(--c-primary) !important; padding: 0.75rem 0; font-size: 1.05rem; border-bottom: 1px solid var(--c-line); }
  .nav-cta { display: inline-block; margin-top: 0.8rem; border-bottom: none !important; color: var(--c-white) !important; }

  /* hamburger -> X */
  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .nav-toggle[aria-expanded="true"] .nav-toggle-bar { background: var(--c-primary) !important; }

  .price-featured { transform: none; }
  .price-featured:hover { transform: translateY(-6px); }

  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }

  /* スティッキーCTA表示。SPでは本文末尾に余白を確保 */
  .sticky-cta { display: block; }
  /* スティッキーCTAの背後に隠れるためスクロールヒントはSPでは非表示 */
  .scroll-hint { display: none; }
  .site-footer { padding-bottom: 5.5rem; }
  /* JS無効時のフォールバック: CTAセクション下部にも逃げを入れ、
     スティッキーCTAがフォーム送信ボタンに重ならないようにする */
  .cta-section { padding-bottom: calc(var(--space-section) + 4.5rem); }

  /* SP: 明朝見出しの字間を詰める */
  .hero-title, .section-title { letter-spacing: 0.02em; }
}

@media (max-width: 480px) {
  .stats { grid-template-columns: 1fr; gap: 1.2rem; }
  .hero-actions .btn { flex: 1 1 auto; }
}

/* nav open: lock body scroll handled via JS class */
body.nav-open { overflow: hidden; }

/* backdrop for mobile nav */
.nav-backdrop {
  position: fixed; inset: 0;
  background: rgba(34,22,14,0.45);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s var(--ease), visibility 0.4s var(--ease);
  z-index: 95;
}
.nav-backdrop.show { opacity: 1; visibility: visible; }

/* ============================================================
   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;
  }
  .reveal { opacity: 1 !important; transform: none !important; }
  .hero-steam, .scroll-line { display: none; }
}