/* ================================================================
   movell.jp トップページ
   トーン: 夜明け前の静けさ。急かさない・煽らない・裁かない。
   ================================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #F7F6F3;
  --card: #FFFFFF;
  --ink: #3A3F4A;
  --sub: #7C7F87;
  --accent: #3D5A45;        /* movellブランドグリーンをアクセントに */
  --accent-soft: #E6EDE7;
  --line: #DDDAD3;
  --icon-bg: #ECEAE4;
  --radius: 18px;
  --header-h: 60px;
}

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: "Zen Kaku Gothic New", -apple-system, "Hiragino Sans", "Yu Gothic UI", sans-serif;
  line-height: 1.9;
}
body.menu-open { overflow: hidden; }

/* ── セクション共通（余白は共通クラスで一元管理） ── */
.section {
  padding: 140px 80px;
  scroll-margin-top: calc(var(--header-h) + 16px);
}
.section-inner { max-width: 1080px; margin: 0 auto; }
.section--soft { background: var(--accent-soft); }
.section-title {
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 600;
  text-align: center;
  line-height: 1.6;
  letter-spacing: 0.01em;
  margin-bottom: 18px;
}
.section-desc {
  text-align: center;
  color: var(--sub);
  font-size: 16px;
  line-height: 2;
  margin-bottom: 64px;
}

/* ── スクロールフェードイン ── */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ── ヘッダー ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  background: rgba(247, 246, 243, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-logo { display: block; }
.header-logo img { height: 20px; width: auto; display: block; }
.header-nav { display: flex; align-items: center; gap: 28px; }
.header-nav a {
  font-size: 13.5px;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: 0.02em;
}
.header-nav a:hover { color: var(--accent); }

/* ハンバーガー */
.menu-btn {
  display: none;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  position: relative;
}
.menu-btn span {
  position: absolute;
  left: 12px;
  width: 20px;
  height: 1.5px;
  background: var(--ink);
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.menu-btn span:nth-child(1) { top: 17px; }
.menu-btn span:nth-child(2) { top: 22px; }
.menu-btn span:nth-child(3) { top: 27px; }
.menu-btn[aria-expanded="true"] span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.menu-btn[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-btn[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  top: var(--header-h);
  right: 0;
  bottom: 0;
  width: min(320px, 84vw);
  background: var(--bg);
  border-left: 1px solid var(--line);
  padding: 28px 28px 40px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transform: translateX(100%);
  transition: transform 0.25s ease;
  z-index: 99;
}
.mobile-menu.open { transform: translateX(0); }
.mobile-menu a {
  color: var(--ink);
  text-decoration: none;
  font-size: 15px;
  padding: 14px 4px;
  border-bottom: 1px solid var(--line);
}
.mobile-menu .menu-note {
  margin-top: auto;
  font-size: 12px;
  color: var(--sub);
}
.menu-backdrop {
  position: fixed;
  inset: var(--header-h) 0 0 0;
  background: rgba(58, 63, 74, 0.18);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  z-index: 98;
}
.menu-backdrop.show { opacity: 1; pointer-events: auto; }
@media (prefers-reduced-motion: reduce) {
  .mobile-menu, .menu-backdrop, .menu-btn span { transition: none; }
}

/* ── HERO ── */
.nb { display: inline-block; }
.hero {
  position: relative;
  overflow: hidden;
  min-height: calc(88vh - var(--header-h));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 96px 24px 88px;
}
.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 500px) auto;
  grid-template-areas:
    "copy visual"
    "cta visual";
  align-items: center;
  column-gap: 80px;
  row-gap: 28px;
  max-width: 1060px;
}
.hero-copy {
  grid-area: copy;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
  gap: 24px;
  align-self: end;
}
.hero-char-sp { display: none; }
.hero-inner .hero-cta {
  grid-area: cta;
  align-items: flex-start;
  align-self: start;
  margin-top: 0;
}
.hero-inner .price-note { justify-content: flex-start; }
.hero-visual { grid-area: visual; display: flex; flex-direction: column; align-items: center; }
.hero .phone-mockup {
  width: min(285px, 72vw);
  box-shadow: 0 36px 70px rgba(58, 63, 74, 0.20);
}
.hero .slider-dots { margin-top: 26px; }
.blob {
  position: absolute;
  z-index: 0;
  pointer-events: none;
}
.blob-1 {
  width: 340px; height: 340px;
  top: -80px; left: -90px;
  background: #E6EDE7;
  border-radius: 62% 38% 55% 45% / 48% 60% 40% 52%;
}
.blob-2 {
  width: 420px; height: 420px;
  bottom: -140px; right: -120px;
  background: #F1ECDF;
  border-radius: 45% 55% 38% 62% / 55% 42% 58% 45%;
}
.blob-3 {
  width: 230px; height: 230px;
  top: 38%; right: -60px;
  background: #DFE9E1;
  border-radius: 55% 45% 60% 40% / 42% 55% 45% 58%;
}
@keyframes blobDrift1 {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(24px) rotate(6deg); }
}
@keyframes blobDrift2 {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-28px) rotate(-5deg); }
}
@media (prefers-reduced-motion: no-preference) {
  .blob-1 { animation: blobDrift1 16s ease-in-out infinite; }
  .blob-2 { animation: blobDrift2 20s ease-in-out infinite; }
  .blob-3 { animation: blobDrift1 12s ease-in-out infinite reverse; }
}
.reform-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 20px;
  padding: 5px 14px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.02em;
}
.reform-badge-dot {
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  flex-shrink: 0;
}
.hero-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.08em;
}
.hero-heading { display: flex; flex-direction: column; gap: 16px; }
.hero-eyebrow {
  font-size: 15px;
  color: var(--sub);
  font-weight: 500;
  letter-spacing: 0.05em;
}
.hero-title {
  font-size: clamp(30px, 4.6vw, 54px);
  font-weight: 700;
  line-height: 1.58;
  letter-spacing: 0;
}
.hero-desc {
  font-size: 15.5px;
  color: var(--sub);
  line-height: 2.1;
}
.hero-cta { display: flex; flex-direction: column; align-items: center; gap: 14px; margin-top: 8px; }

/* ── App Store公式バッジ / 価格ノート ── */
.as-badge { display: inline-block; transition: opacity 0.2s ease; }
.as-badge:hover { opacity: 0.85; }
.as-badge img { height: 56px; width: auto; display: block; }

.price-note {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--sub);
  font-weight: 500;
  justify-content: center;
}
.price-note-amount { font-weight: 700; color: var(--ink); font-size: 15px; }
.price-note-sep { width: 3px; height: 3px; background: var(--line); border-radius: 50%; }

/* ── STEPデモ ── */
.demo-wrap { display: flex; flex-direction: column; align-items: center; }
.step-labels {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.step-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 500;
  color: var(--sub);
  transition: color 0.3s;
  white-space: nowrap;
}
.step-item.active { color: var(--accent); }
.step-num {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 700;
  color: var(--sub);
  transition: background 0.3s, color 0.3s;
  flex-shrink: 0;
}
.step-item.active .step-num { background: var(--accent); color: #fff; }
.step-arrow { font-size: 10px; color: var(--line); flex-shrink: 0; }

.phone-mockup {
  width: min(340px, 78vw);
  background: #23282F;
  border-radius: 48px;
  padding: 13px;
  box-shadow: 0 32px 64px rgba(58, 63, 74, 0.16);
}
.phone-screen {
  border-radius: 38px;
  overflow: hidden;
  aspect-ratio: 9/19;
  position: relative;
}
.phone-screen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  position: absolute;
  top: 0; left: 0;
  opacity: 0;
  transition: opacity 0.5s ease;
}
.phone-screen img.active { opacity: 1; }
@media (prefers-reduced-motion: reduce) {
  .phone-screen img { transition: none; }
}

.slider-dots { display: flex; justify-content: center; gap: 8px; margin-top: 22px; }
.slider-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--line);
  cursor: pointer;
  transition: background 0.3s, transform 0.3s;
  border: none;
  padding: 0;
}
.slider-dot.active { background: var(--accent); transform: scale(1.3); }

/* ── 中間CTA ── */
.mid-cta {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  padding: 120px 24px;
  background: var(--accent-soft);
}
.mid-cta-title {
  font-size: clamp(20px, 2.6vw, 28px);
  font-weight: 600;
  line-height: 1.8;
}
.cta-char { width: 96px; height: auto; }
.cta-char--sm { width: 64px; }
@keyframes charFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
@media (prefers-reduced-motion: no-preference) {
  .cta-char { animation: charFloat 3.2s ease-in-out infinite; }
}

/* ── カード ── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 34px 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: 0 6px 24px rgba(58, 63, 74, 0.05);
}
.icon-wrap {
  width: 46px;
  height: 46px;
  background: var(--icon-bg);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.icon-wrap svg { width: 21px; height: 21px; stroke: var(--sub); fill: none; stroke-width: 1.5; }
.card-title { font-size: 17px; font-weight: 600; line-height: 1.7; }
.card-desc { font-size: 14px; color: var(--sub); line-height: 1.9; }

/* 機能グループ */
.feature-group { margin-bottom: 56px; }
.feature-group:last-child { margin-bottom: 0; }
.group-label {
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.24em;
  color: var(--accent);
  margin-bottom: 22px;
}
.card-featured { background: var(--accent); box-shadow: 0 10px 32px rgba(61, 90, 69, 0.22); }
.card-featured .icon-wrap { background: rgba(255,255,255,0.18); }
.card-featured .icon-wrap svg { stroke: rgba(255,255,255,0.9); }
.card-featured .card-title { color: #fff; }
.card-featured .card-desc { color: rgba(255,255,255,0.8); }
.feature-solo { max-width: 640px; margin: 0 auto; }

/* ── 実機キャプチャ付き機能紹介（muute風 交互レイアウト） ── */
.feature-row {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 32px 72px;
  max-width: 800px;
  margin: 0 auto 88px;
}
.feature-row:last-child { margin-bottom: 0; }
.feature-row--flip .feature-visual { order: -1; }
.feature-row .group-label { text-align: left; margin-bottom: 14px; }
.feature-row-title {
  font-size: clamp(19px, 2.2vw, 24px);
  font-weight: 700;
  line-height: 1.7;
  margin-bottom: 12px;
}
.feature-row-desc { font-size: 14.5px; color: var(--sub); }
.feature-row-points {
  list-style: none;
  margin-top: 18px;
  display: grid;
  gap: 10px;
}
.feature-row-points li {
  position: relative;
  padding-left: 24px;
  font-size: 13.5px;
  color: var(--sub);
  line-height: 1.8;
}
.feature-row-points li::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 0.5em;
  width: 6px;
  height: 10px;
  border-right: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
  transform: rotate(40deg);
}
.phone-mockup--sm {
  width: min(240px, 62vw);
  border-radius: 40px;
  padding: 10px;
  box-shadow: 0 24px 48px rgba(58, 63, 74, 0.14);
}
.phone-mockup--sm .phone-screen { border-radius: 32px; }

@media (max-width: 768px) {
  .feature-row {
    grid-template-columns: 1fr;
    gap: 26px;
    margin-bottom: 64px;
  }
  .feature-row--flip .feature-visual { order: 0; }
  .feature-visual { justify-self: center; }
}

/* ── レビュー ── */
.voice-title {
  font-family: "Zen Kaku Gothic New", sans-serif;
  letter-spacing: 0.1em;
}
.review-head { display: flex; align-items: center; gap: 12px; }
.review-avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--accent-soft);
  object-fit: contain;
  padding: 5px;
  flex-shrink: 0;
}
.review-track {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  max-width: 880px;
  margin: 0 auto;
}
.review-dots { display: none; }
.review-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 34px 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: 0 6px 24px rgba(58, 63, 74, 0.05);
}
.review-text { font-size: 15px; line-height: 2; color: var(--ink); }
.review-author { font-size: 13px; color: var(--sub); }

/* ── 価格 ── */
.price-box {
  max-width: 560px;
  margin: 0 auto;
  background: var(--card);
  border-radius: var(--radius);
  padding: 64px 40px;
  text-align: center;
  box-shadow: 0 6px 24px rgba(58, 63, 74, 0.05);
}
.price-amount {
  font-size: clamp(44px, 6vw, 60px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.01em;
}
.price-amount small { font-size: 0.4em; font-weight: 600; color: var(--sub); margin-left: 6px; }
.price-once {
  margin-top: 14px;
  font-size: 16px;
  font-weight: 500;
  color: var(--accent);
}
.price-notes {
  margin-top: 22px;
  font-size: 13.5px;
  color: var(--sub);
  line-height: 2.1;
}
.price-box .as-badge { margin-top: 30px; }

/* ── ユースケースカード ── */
.usecase-track {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
}
.usecase-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 34px 26px;
  width: 310px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 14px;
  box-shadow: 0 6px 24px rgba(58, 63, 74, 0.05);
}
.case-char { width: 96px; height: 96px; object-fit: contain; }
.usecase-card .card-title { font-size: 16px; }
.usecase-card .card-desc { font-size: 13.5px; }

/* ── movellが生まれた理由 ── */
.story-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 64px 40px;
  max-width: 820px;
  margin: 0 auto;
  text-align: center;
  box-shadow: 0 6px 24px rgba(58, 63, 74, 0.05);
}
.story-lead { font-size: 15px; line-height: 2.2; color: var(--sub); }
.story-main-quote {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 600;
  color: var(--accent);
  line-height: 1.9;
  letter-spacing: 0.02em;
  margin: 30px 0;
}
.story-close { font-size: 15px; color: var(--sub); }
.story-origin {
  margin-top: 30px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  color: var(--sub);
  line-height: 2;
}

/* ── FAQ ── */
.faq-card {
  background: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 880px;
  margin: 0 auto;
  box-shadow: 0 6px 24px rgba(58, 63, 74, 0.05);
}
.faq-card details { border-bottom: 1px solid var(--line); }
.faq-card details:last-child { border-bottom: none; }
.faq-card summary {
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 22px 32px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 500;
  user-select: none;
}
.faq-card summary::-webkit-details-marker { display: none; }
.chevron {
  width: 18px;
  height: 18px;
  stroke: var(--sub);
  fill: none;
  stroke-width: 2;
  transition: transform 0.2s;
  flex-shrink: 0;
}
details[open] .chevron { transform: rotate(180deg); }
.faq-answer { padding: 0 32px 22px; font-size: 14px; color: var(--sub); line-height: 2; }

/* ── 最終CTA ── */
.cta {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
  padding: 150px 24px;
}
.cta-title { font-size: clamp(24px, 3.2vw, 40px); font-weight: 600; line-height: 1.8; }
.cta-desc { color: var(--sub); font-size: 15px; }

/* ── コラム ── */
.column-char { width: 56px; height: auto; display: block; margin: 0 auto 14px; }
.column-title-link { color: inherit; text-decoration: none; }
.guide-tag {
  flex-shrink: 0;
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 4px 10px;
  border-radius: 20px;
  letter-spacing: 0.06em;
  white-space: nowrap;
}
.column-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 28px 26px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  transition: box-shadow 0.2s;
  box-shadow: 0 6px 24px rgba(58, 63, 74, 0.05);
}
.column-card:hover { box-shadow: 0 10px 32px rgba(58, 63, 74, 0.1); }
.column-card .guide-tag { align-self: flex-start; }
.column-title { font-size: 15.5px; font-weight: 600; line-height: 1.7; }
.column-desc { font-size: 13px; color: var(--sub); line-height: 1.8; flex: 1; margin: 0; }
.column-card .guide-arrow { align-self: flex-end; font-size: 13px; font-weight: 600; color: var(--accent); }

/* ── フッター ── */
footer {
  border-top: 1px solid var(--line);
  padding: 48px 32px;
}
.footer-main {
  max-width: 1080px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.footer-left { display: flex; flex-direction: row; align-items: center; gap: 16px; }
.footer-copy { font-size: 13px; color: var(--sub); }
.footer-mail { font-size: 13px; color: var(--sub); text-decoration: none; }
.footer-mail:hover { color: var(--accent); }
.footer-links { display: flex; gap: 28px; align-items: center; flex-wrap: wrap; }
.footer-links a {
  text-decoration: none;
  color: var(--sub);
  font-size: 13.5px;
  white-space: nowrap;
}
.footer-links a:hover { color: var(--accent); }

/* ================================================================
   モバイル
   ================================================================ */
.sp-br { display: none; }
@media (max-width: 768px) {
  .pc-br { display: none; }
  .sp-br { display: inline; }

  .site-header { padding: 0 12px 0 20px; }
  .header-nav { display: none; }
  .menu-btn { display: block; }

  .section { padding: 96px 20px; }
  .section-title { font-size: clamp(21px, 5.5vw, 26px); }
  .section-desc { font-size: 14px; margin-bottom: 40px; }

  .hero { padding: 40px 22px 56px; min-height: auto; }
  .hero-inner {
    display: grid;
    grid-template-columns: 1fr;
    grid-template-areas: "copy" "visual" "cta";
    row-gap: 30px;
  }
  .hero-copy { align-items: center; text-align: center; gap: 14px; align-self: auto; }
  .hero-inner .hero-cta { align-items: center; margin-top: 0; }
  .hero-inner .price-note { justify-content: center; }
  .hero .phone-mockup {
    width: min(230px, 62vw);
    transform: none;
  }
  /* テキスト層を減らす: ラベルはSP非表示（キーワードは説明文1行目に存在） */
  .hero-label { display: none; }
  .hero-eyebrow { display: none; }
  .hero-desc .desc-usecase { display: none; }
  .reform-badge { font-size: 11px; padding: 4px 12px; }
  .hero-heading { gap: 8px; }
  .hero-eyebrow { font-size: 13px; letter-spacing: 0.03em; }
  .hero-title {
    font-size: clamp(25px, 6.9vw, 31px);
    line-height: 1.55;
    font-feature-settings: "palt";
    letter-spacing: 0.02em;
  }
  .hero-desc { font-size: 13.5px; line-height: 1.95; }
  /* ブロブは端に小さく退避（文字と重ねない） */
  .blob-1 { width: 220px; height: 220px; top: -110px; left: -110px; }
  .blob-2 { width: 260px; height: 260px; bottom: -130px; right: -120px; }
  .blob-3 { display: none; }
  .as-badge img { height: 52px; }

  .mid-cta { padding: 96px 20px; }
  .cta { padding: 110px 20px; }

  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .card { padding: 22px 20px; gap: 10px; }
  .card-title { font-size: 15px; }
  .card-desc { font-size: 13px; }
  .feature-group { margin-bottom: 44px; }

  .price-box { padding: 44px 24px; }

  summary { padding: 17px 18px; font-size: 14px; }
  .faq-answer { padding: 0 18px 17px; font-size: 13px; }

  .story-card { padding: 36px 22px; }
  .story-main-quote { font-size: clamp(19px, 5.5vw, 24px); margin: 20px 0; }

  footer { padding: 36px 22px 44px; }
  .footer-main { flex-direction: column-reverse; align-items: flex-start; gap: 26px; }
  .footer-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px 20px;
    width: 100%;
  }
  .footer-left {
    flex-direction: row;
    align-items: center;
    gap: 14px;
    font-size: 12px;
  }
  .footer-copy, .footer-mail { font-size: 12px; }

  /* ユースケース: 横スワイプ */
  .usecase-track {
    flex-wrap: nowrap;
    justify-content: flex-start;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    gap: 14px;
    padding: 4px 2px 14px;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }
  .usecase-track::-webkit-scrollbar { display: none; }
  .usecase-card {
    flex: 0 0 76%;
    scroll-snap-align: center;
    padding: 26px 22px;
  }
  .case-char { width: 82px; height: 82px; }

  /* モバイルではカード群をコンパクトなリスト表示に */
  .mobile-hide { display: none !important; }
  .mobile-list {
    display: flex;
    flex-direction: column;
    background: var(--card);
    border-radius: var(--radius);
    gap: 0;
    padding: 6px 0;
    box-shadow: 0 6px 24px rgba(58, 63, 74, 0.05);
  }
  .mobile-list .card {
    background: transparent;
    border-radius: 0;
    box-shadow: none;
    flex-direction: row !important;
    align-items: center !important;
    gap: 12px !important;
    padding: 14px 16px;
    flex-wrap: wrap;
    cursor: pointer;
  }
  .mobile-list .card + .card { border-top: 1px solid #EFEDE8; }
  .mobile-list .icon-wrap { width: 34px; height: 34px; border-radius: 9px; flex-shrink: 0; }
  .mobile-list .icon-wrap svg { width: 16px; height: 16px; }
  .mobile-list .card-title { font-size: 14px; line-height: 1.6; }
  .mobile-list .card-desc { display: none; }
  .mobile-list .card > div { margin: 0 !important; }
  .mobile-list .card::after {
    content: "";
    width: 7px;
    height: 7px;
    border-right: 1.5px solid var(--sub);
    border-bottom: 1.5px solid var(--sub);
    transform: rotate(45deg);
    margin-left: auto;
    flex-shrink: 0;
    transition: transform 0.2s;
  }
  .mobile-list .card.open::after { transform: rotate(225deg); }
  .mobile-list .card.open .card-desc { display: block; }
  .mobile-list .card.open > .card-desc { width: 100%; padding-left: 46px; }
  .mobile-list:has(+ .mobile-list) {
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
    padding-bottom: 0;
  }
  .mobile-list + .mobile-list {
    margin-top: 0 !important;
    border-top: 1px solid #EFEDE8;
    border-top-left-radius: 0;
    border-top-right-radius: 0;
    padding-top: 0;
  }

  /* 機能: featured cardはモバイルでも単独カードのまま */
  .feature-solo .card-featured { flex-direction: column; }

  /* レビュー: 横スワイプカルーセル */
  .review-track {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    gap: 12px;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }
  .review-track::-webkit-scrollbar { display: none; }
  .review-track .review-card { flex: 0 0 100%; scroll-snap-align: center; }
  .review-dots { display: flex; justify-content: center; gap: 8px; margin-top: 18px; }

  /* コラム: 1枚の箱の中のリスト表示 */
  .column-section .grid-3 {
    display: flex;
    flex-direction: column;
    background: var(--card);
    border-radius: var(--radius);
    padding: 6px 0;
    gap: 0;
    box-shadow: 0 6px 24px rgba(58, 63, 74, 0.05);
  }
  .column-card {
    background: transparent;
    border: none;
    border-radius: 0;
    box-shadow: none;
    flex-direction: row;
    align-items: center;
    gap: 10px;
    padding: 14px 16px;
  }
  .column-card + .column-card { border-top: 1px solid #EFEDE8; }
  .column-card .guide-tag { display: none; }
  .column-title { font-size: 14px; line-height: 1.6; flex: 1; }
  .column-desc { display: none; }
  .column-card .guide-arrow { display: none; }
  .column-card::after {
    content: "";
    width: 7px;
    height: 7px;
    border-right: 1.5px solid var(--sub);
    border-bottom: 1.5px solid var(--sub);
    transform: rotate(-45deg);
    flex-shrink: 0;
  }
}