/* =========================================
   CareTablet Website - Main Stylesheet
   ========================================= */

/* ---------- CSS Variables ---------- */
:root {
  --color-primary: #3B82F6;
  --color-primary-dark: #1D4ED8;
  --color-primary-light: #93C5FD;
  --color-secondary: #F97316;
  --color-secondary-dark: #EA580C;
  --color-green: #10B981;
  --color-teal: #0D9488;
  --color-red: #EF4444;
  --color-red-dark: #DC2626;
  --color-yellow: #F59E0B;

  --color-bg: #FFFFFF;
  --color-bg-gray: #F8FAFC;
  --color-bg-dark: #1E293B;
  --color-bg-blue-light: #EFF6FF;

  --color-text: #1E293B;
  --color-text-muted: #64748B;
  --color-text-light: #94A3B8;
  --color-text-white: #FFFFFF;

  --color-border: #E2E8F0;
  --color-border-light: #F1F5F9;

  --font-family: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-md: 1.125rem;
  --font-size-lg: 1.25rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 1.875rem;
  --font-size-3xl: 2.25rem;
  --font-size-4xl: 3rem;

  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-5: 1.25rem;
  --spacing-6: 1.5rem;
  --spacing-8: 2rem;
  --spacing-10: 2.5rem;
  --spacing-12: 3rem;
  --spacing-16: 4rem;
  --spacing-20: 5rem;
  --spacing-24: 6rem;

  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-2xl: 2rem;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.1), 0 4px 12px rgba(0,0,0,0.06);
  --shadow-xl: 0 20px 50px rgba(0,0,0,0.12), 0 8px 24px rgba(0,0,0,0.08);

  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s ease;

  --container-max: 1200px;
  --container-pad: clamp(1rem, 5vw, 2rem);
  --header-height: 70px;
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-primary-dark);
  text-decoration: underline;
  text-decoration-color: var(--color-primary-light);
  text-underline-offset: 3px;
  transition: var(--transition-fast);
}

a:hover {
  color: var(--color-primary);
  text-decoration-color: var(--color-primary);
}

a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ナビ・ボタン・カードなど UI 部品は下線なし */
:where(
  .logo,
  .nav a,
  .btn,
  .page-nav-card,
  .install-subnav__overview,
  .install-subnav__list a,
  .footer__nav a,
  .back-to-top,
  .floating-cta a,
  .back-link
) {
  text-decoration: none;
}

:where(.logo, .page-nav-card) {
  color: inherit;
}

:where(.back-link) {
  color: var(--color-primary);
}

ul, ol { list-style: none; }

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

/* ---------- Container ---------- */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* ---------- Scroll Animations ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in--delay { transition-delay: 0.2s; }
.fade-in--visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-3) var(--spacing-6);
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: var(--font-size-base);
  transition: var(--transition);
  white-space: nowrap;
  border: 2px solid transparent;
  text-align: center;
  justify-content: center;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-secondary), #FB923C);
  color: white;
  box-shadow: 0 4px 16px rgba(249, 115, 22, 0.35);
}
.btn--primary:hover {
  background: linear-gradient(135deg, var(--color-secondary-dark), var(--color-secondary));
  box-shadow: 0 6px 24px rgba(249, 115, 22, 0.45);
  transform: translateY(-2px);
}

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

.btn--lg { padding: var(--spacing-4) var(--spacing-8); font-size: var(--font-size-md); }
.btn--sm { padding: var(--spacing-2) var(--spacing-4); font-size: var(--font-size-sm); }

.btn__icon { width: 20px; height: 20px; flex-shrink: 0; }

/* ---------- Badges ---------- */
.badge {
  display: inline-block;
  padding: var(--spacing-1) var(--spacing-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 700;
}

.badge--new {
  background: #FEF3C7;
  color: #92400E;
}

.badge--trial {
  background: #DCFCE7;
  color: #166534;
}

/* ---------- Section Common ---------- */
.section {
  padding-block: var(--spacing-20);
}

.section--gray { background-color: var(--color-bg-gray); }
.section--dark { background-color: var(--color-bg-dark); }

.section__header {
  text-align: center;
  margin-bottom: var(--spacing-12);
}

.section__label {
  display: inline-block;
  padding: var(--spacing-1) var(--spacing-4);
  background: var(--color-bg-blue-light);
  color: var(--color-primary);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 700;
  margin-bottom: var(--spacing-4);
  letter-spacing: 0.05em;
}

.section__label--light {
  background: rgba(255,255,255,0.15);
  color: rgba(255,255,255,0.9);
}

.section__title {
  font-size: clamp(var(--font-size-2xl), 4vw, var(--font-size-3xl));
  font-weight: 900;
  line-height: 1.3;
  margin-bottom: var(--spacing-4);
  color: var(--color-text);
}

.section__title--light { color: var(--color-text-white); }

.section__desc {
  font-size: var(--font-size-md);
  color: var(--color-text-muted);
  max-width: 600px;
  margin-inline: auto;
}

/* ---------- Manga Images ---------- */
.manga-img {
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  width: 100%;
  object-fit: contain;
}

.manga-img--wide { max-width: 900px; margin-inline: auto; }

/* Manga / screenshot zoom button & lightbox */
.manga-zoom,
.screenshot-zoom {
  position: relative;
  width: 100%;
}

.manga-img.manga-img--zoomable,
.screenshot-zoom img {
  cursor: zoom-in;
}

.manga-zoom__btn,
.screenshot-zoom__btn {
  position: absolute;
  bottom: var(--spacing-3);
  right: var(--spacing-3);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-1);
  padding: var(--spacing-2) var(--spacing-3);
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text-dark);
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
  z-index: 2;
}

.manga-zoom__btn:hover,
.screenshot-zoom__btn:hover {
  background: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.manga-zoom__btn:focus-visible,
.screenshot-zoom__btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.manga-zoom__icon,
.screenshot-zoom__icon {
  font-size: 1rem;
  line-height: 1;
}

.manga-lightbox {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: var(--spacing-6);
  overflow-y: auto;
}

.manga-lightbox[hidden] {
  display: none;
}

.manga-lightbox.is-open {
  animation: manga-lightbox-fade 0.2s ease;
}

@keyframes manga-lightbox-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

.manga-lightbox__backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.88);
  border: none;
  cursor: pointer;
}

.manga-lightbox__dialog {
  position: relative;
  z-index: 1;
  width: min(96vw, 1200px);
  margin: var(--spacing-10) auto var(--spacing-8);
}

.manga-lightbox__close {
  position: fixed;
  top: var(--spacing-4);
  right: var(--spacing-4);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.95);
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--color-text-dark);
  cursor: pointer;
  z-index: 2;
  box-shadow: var(--shadow-lg);
  transition: background 0.2s, transform 0.2s;
}

.manga-lightbox__close:hover {
  background: #fff;
  transform: scale(1.05);
}

.manga-lightbox__close:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.manga-lightbox__frame {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.manga-lightbox__img {
  display: block;
  width: 100%;
  height: auto;
}

.manga-lightbox__caption {
  margin: 0;
  padding: var(--spacing-4) var(--spacing-5);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.6;
  border-top: 1px solid var(--color-border-light);
}

.manga-lightbox__caption:empty {
  display: none;
}

.manga-lightbox__hint {
  margin-top: var(--spacing-3);
  text-align: center;
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.75);
}

@media (max-width: 768px) {
  .manga-zoom__label,
  .screenshot-zoom__label { display: none; }
  .manga-zoom__btn,
  .screenshot-zoom__btn {
    bottom: var(--spacing-2);
    right: var(--spacing-2);
    padding: var(--spacing-2);
  }
  .manga-lightbox {
    padding: var(--spacing-4);
  }
  .manga-lightbox__dialog {
    width: 100%;
    margin-top: var(--spacing-12);
  }
}

.manga-placeholder {
  width: 100%;
  aspect-ratio: 2 / 1;
  max-width: 640px;
  background: linear-gradient(135deg, #F1F5F9 0%, #E2E8F0 100%);
  border-radius: var(--radius-xl);
  border: 2px dashed var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
}

.manga-placeholder__inner {
  text-align: center;
  color: var(--color-text-muted);
}

.manga-placeholder__icon { font-size: 3rem; display: block; margin-bottom: var(--spacing-3); }
.manga-placeholder__text { font-size: var(--font-size-md); font-weight: 700; }

/* =========================================
   HEADER
   ========================================= */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-light);
  transition: box-shadow 0.3s ease;
}

.header--scrolled { box-shadow: var(--shadow-md); }

.header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-4);
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.logo__img {
  display: block;
  height: 56px;
  width: auto;
}

.logo__img--footer {
  height: 60px;
}

/* Navigation */
.nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-6);
}

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--spacing-1);
}

.nav__link {
  padding: var(--spacing-2) var(--spacing-3);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  transition: var(--transition-fast);
}

.nav__link:hover {
  color: var(--color-primary);
  background: var(--color-bg-blue-light);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 30px;
  padding: var(--spacing-1);
  z-index: 1001;
}

.hamburger span {
  display: block;
  height: 2.5px;
  background: var(--color-text);
  border-radius: 2px;
  transition: var(--transition);
  transform-origin: center;
}

.hamburger.is-open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.hamburger.is-open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.is-open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* =========================================
   HERO
   ========================================= */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  overflow: hidden;
  background: linear-gradient(145deg, #EFF6FF 0%, #F0FDF4 50%, #FFF7ED 100%);
}

.hero__bg-shapes { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }

.shape {
  position: absolute;
  border-radius: 50%;
  opacity: 0.15;
  animation: float 8s ease-in-out infinite;
}

.shape--1 {
  width: 400px; height: 400px;
  background: var(--color-primary);
  top: -100px; right: -100px;
  animation-delay: 0s;
}

.shape--2 {
  width: 250px; height: 250px;
  background: var(--color-secondary);
  bottom: 10%; left: -80px;
  animation-delay: 2s;
}

.shape--3 {
  width: 180px; height: 180px;
  background: var(--color-green);
  top: 50%; right: 20%;
  animation-delay: 4s;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-20px) scale(1.05); }
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-12);
  align-items: center;
  padding-block: var(--spacing-16);
  position: relative;
  z-index: 1;
}

.hero__badge {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-2);
  margin-bottom: var(--spacing-6);
}

.hero__title {
  font-size: clamp(var(--font-size-2xl), 5vw, var(--font-size-4xl));
  font-weight: 900;
  line-height: 1.25;
  color: var(--color-text);
  margin-bottom: var(--spacing-6);
}

.hero__title em {
  font-style: normal;
  color: var(--color-primary);
  position: relative;
}

.hero__title em::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  border-radius: 2px;
  opacity: 0.4;
}

.hero__subtitle {
  font-size: var(--font-size-md);
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-8);
  line-height: 1.8;
}

.hero__subtitle strong { color: var(--color-text); }

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-3);
  margin-bottom: 0;
}

/* Hero News */
.hero__news {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,0.75);
  backdrop-filter: blur(6px);
  overflow: hidden;
  max-width: 520px;
}

.hero__news-header {
  display: flex;
  align-items: center;
  padding: var(--spacing-2) var(--spacing-4);
  background: rgba(59,130,246,0.07);
  border-bottom: 1px solid var(--color-border);
}

.hero__news-label {
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.04em;
}

.hero__news-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.hero__news-item {
  display: flex;
  gap: var(--spacing-3);
  align-items: baseline;
  padding: var(--spacing-2) var(--spacing-4);
  border-bottom: 1px solid var(--color-border);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

.hero__news-item:last-child {
  border-bottom: none;
}

.hero__news-date {
  flex-shrink: 0;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
}

.hero__news-text {
  color: var(--color-text);
  text-align: left;

}

.hero__stats {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
  flex-wrap: wrap;
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(8px);
  border-radius: var(--radius-lg);
  padding: var(--spacing-4) var(--spacing-6);
  border: 1px solid rgba(255,255,255,0.8);
  box-shadow: var(--shadow-sm);
  display: inline-flex;
}

.stat { text-align: center; }
.stat__value { display: block; font-weight: 900; font-size: var(--font-size-lg); color: var(--color-primary); }
.stat__label { display: block; font-size: var(--font-size-xs); color: var(--color-text-muted); }
.stat__divider { width: 1px; height: 32px; background: var(--color-border); }

/* Hero Image */
.hero__col--text {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-6);
}

.hero__col--media {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-3);
  margin-top: -32px;
}

.hero__devices {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-2);
  width: 100%;
}

.hero__image {
  display: flex;
  justify-content: center;
  align-items: flex-start;
}

.hero__image-wrapper {
  width: 100%;
  max-width: 560px;
}

.hero__image-stack {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-3);
  margin-top: -32px;
}

.hero__image-top {
  position: relative;
  width: 100%;
  max-width: 480px;
  margin-inline: auto;
}

.hero__img {
  width: 100%;
  display: block;
}

.hero__img--main {
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  animation: float-gentle 6s ease-in-out infinite;
}

.hero__img--devices {
  margin-top: 50px;
  width: 100%;
  max-width: 560px;
}

.hero__devices-caption {
  width: 100%;
  max-width: 560px;
  margin: 0;
  padding-top: var(--spacing-2);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  text-align: left;
}

@keyframes float-gentle {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.hero__image-badge {
  position: absolute;
  bottom: -16px;
  left: -16px;
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--spacing-3) var(--spacing-4);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  border: 2px solid var(--color-bg-blue-light);
}

.badge--floating { font-size: 1.5rem; }
.badge--floating p { font-size: var(--font-size-sm); font-weight: 700; color: var(--color-text); line-height: 1.3; }

.hero__wave {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  line-height: 0;
}

.hero__wave svg { width: 100%; display: block; }

/* =========================================
   PROBLEM SECTION
   ========================================= */
.problem__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-10);
}

.problem__card {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--spacing-6);
  text-align: center;
  border: 2px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.problem__card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.problem__icon { font-size: 2.5rem; display: block; margin-bottom: var(--spacing-3); }

.problem__icon-img {
  width: 112px;
  height: 168px;
  object-fit: contain;
  object-position: center;
  border-radius: var(--radius-lg);
  margin: 0 auto var(--spacing-4);
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.08);
}

.problem__card p {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  font-weight: 500;
  line-height: 1.6;
}

.problem__solution {
  text-align: center;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: white;
  padding: var(--spacing-8) var(--spacing-12);
  border-radius: var(--radius-2xl);
  box-shadow: 0 8px 30px rgba(59, 130, 246, 0.3);
}

.problem__solution-text {
  font-size: var(--font-size-xl);
  font-weight: 900;
  line-height: 1.6;
}

.problem__solution-text strong { font-size: var(--font-size-2xl); }

/* =========================================
   OVERVIEW (MANGA)
   ========================================= */
.overview.section {
  padding-block: var(--spacing-8) var(--spacing-12);
}

.overview__figure {
  margin: 0 auto;
  max-width: 960px;
}

.overview__img {
  display: block;
  height: auto;
  border: 1px solid var(--color-border-light);
  background: #fff;
}

/* =========================================
   FEATURES SECTION
   ========================================= */
.features__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-6);
}

@media (min-width: 1024px) {
  .features .container {
    max-width: 1360px;
    padding-inline: var(--spacing-4);
  }

  .features__grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: var(--spacing-2);
  }

  .feature-card {
    padding: var(--spacing-3) var(--spacing-2);
  }

  .feature-card__icon-wrap {
    width: 52px;
    height: 52px;
    margin-bottom: var(--spacing-2);
  }

  .feature-card__icon {
    width: 36px;
    height: 36px;
  }

  .feature-card__title {
    width: 100%;
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-2);
  }

  .feature-card__desc {
    width: 100%;
    font-size: var(--font-size-sm);
    line-height: 1.6;
    margin-bottom: var(--spacing-2);
  }

  .feature-card__link {
    font-size: var(--font-size-xs);
  }
}

.feature-card {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--spacing-8) var(--spacing-6);
  text-align: center;
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.feature-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
  border-color: transparent;
}

.feature-card__icon-wrap {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-4);
}

.feature-card__icon-wrap--blue { background: var(--color-bg-blue-light); }
.feature-card__icon-wrap--orange { background: #FFF7ED; }
.feature-card__icon-wrap--green { background: #F0FDF4; }
.feature-card__icon-wrap--purple { background: #FAF5FF; }
.feature-card__icon-wrap--teal { background: #F0FDFA; }
.feature-card__icon-wrap--red { background: #FFF1F2; }

.feature-card__icon { width: 48px; height: 48px; }

.feature-card__title {
  font-size: var(--font-size-md);
  font-weight: 700;
  margin-bottom: var(--spacing-3);
  color: var(--color-text);
  line-height: 1.4;
}

.feature-card__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--spacing-4);
  flex: 1;
}

.feature-card__link {
  font-size: var(--font-size-sm);
  color: var(--color-primary-dark);
  font-weight: 600;
  margin-top: auto;
}

.feature-card__link:hover {
  color: var(--color-primary);
}

/* =========================================
   USE CASES SECTION
   ========================================= */
/* usecases セクション上下パディング調整 */
.usecases.section {
  padding-block-start: var(--spacing-10);
}

/* タブ上部見出し */
.usecases__tab-header {
  text-align: center;
  margin-bottom: var(--spacing-5);
}

.usecases__tab-label {
  display: inline-block;
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.04em;
  margin-bottom: var(--spacing-1);
}

.usecases__tab-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin: 0;
}

.tabs-scroll-wrap {
  position: relative;
  margin-bottom: var(--spacing-8);
}

.tabs-scroll-wrap__hint {
  display: none;
}

.tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-2);
  background: var(--color-bg-gray);
  padding: var(--spacing-3);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
}

.tab {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-1);
  padding: var(--spacing-3) var(--spacing-2);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-md);
  font-weight: 600;
  line-height: 1.25;
  color: var(--color-text-muted);
  transition: var(--transition-fast);
  border: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.75);
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}

.tab:hover:not(.tab--active) {
  background: white;
  color: var(--color-text);
  border-color: var(--color-border);
}

.tab--active {
  background: #FEF9C3;
  color: var(--color-text);
  border-color: #FDE047;
  box-shadow: var(--shadow-sm);
}

.tab--active:hover {
  background: #FEF9C3;
  color: var(--color-text);
  border-color: #FDE047;
}

.tab__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
  font-size: 1.6rem;
  line-height: 1;
}

.tab__label {
  font-weight: 700;
  line-height: 1.2;
  font-size: var(--font-size-sm);
  white-space: nowrap;
}

/* Use Case Panels */
.usecase-panel {
  display: none;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
  gap: var(--spacing-10) var(--spacing-12);
  align-items: start;
  padding: var(--spacing-8);
  background: white;
  border-radius: var(--radius-2xl);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
  animation: panelFadeIn 0.4s ease;
}

.usecase-panel--active { display: grid; }

/* パネル内 前へ / 次へ ナビ */
.usecase-panel__nav {
  grid-column: 1 / -1;
  display: flex;
  justify-content: center;
  align-items: stretch;
  gap: var(--spacing-4);
  margin-top: var(--spacing-8);
  padding-top: var(--spacing-6);
  border-top: 1px solid var(--color-border-light);
}

.usecase-panel__nav-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding: var(--spacing-4) var(--spacing-6);
  background: white;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-2xl);
  cursor: pointer;
  font-family: inherit;
  color: var(--color-text);
  transition: border-color 0.2s, background 0.2s, box-shadow 0.2s, transform 0.15s;
  text-align: left;
  width: 260px;
  min-width: 0;
  box-sizing: border-box;
  -webkit-appearance: none;
  appearance: none;
}

.usecase-panel__nav-btn:hover {
  border-color: var(--color-primary);
  background: color-mix(in srgb, var(--color-primary) 5%, white);
  box-shadow: 0 4px 16px rgba(0,0,0,0.10);
  transform: translateY(-2px);
}

.usecase-panel__nav-btn--next {
  text-align: right;
  justify-content: flex-end;
}

.usecase-panel__nav-arrow {
  font-size: 1.1rem;
  color: var(--color-primary);
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in srgb, var(--color-primary) 12%, white);
  border-radius: 50%;
  transition: background 0.2s;
}

.usecase-panel__nav-btn:hover .usecase-panel__nav-arrow {
  background: var(--color-primary);
  color: white;
}

.usecase-panel__nav-meta {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
  min-width: 0;
}

.usecase-panel__nav-hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  font-weight: 400;
}

.usecase-panel__nav-label {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 詳細説明エリア：2カラム全幅に広がる */
.usecase-panel__detail {
  grid-column: 1 / -1;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border-light);
  background: var(--color-bg-gray);
  padding: var(--spacing-8);
}

.usecase-detail__intro {
  font-size: var(--font-size-base);
  color: var(--color-text);
  line-height: 1.85;
  margin-bottom: var(--spacing-8);
}

.usecase-detail__screens {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-5);
  max-width: 1080px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--spacing-8);
}

.usecase-detail__screens--3col {
  grid-template-columns: repeat(3, 1fr);
  max-width: 1170px;
}

.usecase-detail__screens--stack {
  grid-template-columns: repeat(2, 1fr);
  max-width: 1080px;
  gap: var(--spacing-4);
}

.usecase-detail__screen {
  background: white;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.usecase-detail__screen img {
  width: 100%;
  max-height: 300px;
  object-fit: contain;
  object-position: center;
  display: block;
  padding: var(--spacing-3);
  background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
  box-sizing: border-box;
}

.usecase-detail__screen figcaption {
  padding: var(--spacing-3) var(--spacing-4);
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.55;
  border-top: 1px solid var(--color-border-light);
}

.usecase-detail__screen figcaption span {
  display: block;
  font-weight: 500;
  color: var(--color-text-muted);
  margin-top: var(--spacing-1);
  font-size: 0.7rem;
  line-height: 1.5;
}

/* タブレット / スマホのデバイス別レイアウト（掲示板など） */
.usecase-detail__devices {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 234px;
  gap: var(--spacing-5) var(--spacing-6);
  align-items: start;
  max-width: 1230px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--spacing-8);
}

.usecase-detail__devices-tablet {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-4);
  align-content: start;
}

.usecase-detail__devices-tablet > .usecase-detail__devices-label,
.usecase-detail__devices-tablet > .usecase-detail__devices-label--left {
  grid-column: 1 / -1;
}

/* タブレット画面3枚（掲示板など）：3枚目を下段中央に */
.usecase-detail__devices-tablet--triple .usecase-detail__screen:nth-child(3) {
  grid-column: 1 / -1;
  max-width: 510px;
  justify-self: center;
  width: 100%;
}

.usecase-detail__devices-tablet .usecase-detail__screen img {
  max-height: 270px;
}

.usecase-detail__devices-phone {
  padding-top: var(--spacing-6);
}

.usecase-detail__devices-phone .usecase-detail__screen img {
  max-height: 390px;
  padding: var(--spacing-2);
}

.usecase-detail__devices-label {
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: var(--color-text-muted);
  text-align: center;
  margin-bottom: var(--spacing-3);
  letter-spacing: 0.02em;
}

.usecase-detail__devices-label--left {
  text-align: left;
  margin-bottom: var(--spacing-4);
}

.usecase-detail__devices-phone .usecase-detail__screen figcaption {
  font-size: var(--font-size-xs);
  padding: var(--spacing-3) var(--spacing-4);
}

.usecase-detail__section {
  background: white;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  padding: var(--spacing-6);
  margin-bottom: var(--spacing-6);
}

.usecase-detail__section:last-child {
  margin-bottom: 0;
}

.usecase-detail__section-title {
  font-size: var(--font-size-lg);
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: var(--spacing-4);
  padding-bottom: var(--spacing-3);
  border-bottom: 2px solid var(--color-primary-light);
}

.usecase-detail__section p,
.usecase-detail__section li {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.8;
}

.usecase-detail__section ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
  margin-top: var(--spacing-3);
}

.usecase-detail__section li {
  color: var(--color-text);
  font-weight: 500;
}

.usecase-detail__note {
  margin-top: var(--spacing-4);
  padding: var(--spacing-3) var(--spacing-4);
  background: #EFF6FF;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  line-height: 1.7;
}

.usecase-detail__commands {
  margin-top: var(--spacing-4);
  overflow-x: auto;
}

.usecase-detail__commands table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.usecase-detail__commands th,
.usecase-detail__commands td {
  padding: var(--spacing-3) var(--spacing-4);
  border-bottom: 1px solid var(--color-border-light);
  text-align: left;
  vertical-align: top;
}

.usecase-detail__commands th {
  background: var(--color-bg-blue-light);
  color: var(--color-primary);
  font-weight: 700;
  white-space: nowrap;
}

.usecase-detail__commands td:first-child {
  font-weight: 600;
  color: var(--color-text);
  width: 28%;
}

.usecase-detail__commands td:nth-child(2) {
  color: #C2410C;
  font-weight: 700;
  width: 32%;
}

.usecase-detail__commands td:last-child {
  color: var(--color-text-muted);
}

.usecase-detail__commands-caption {
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: var(--color-primary);
  margin: var(--spacing-5) 0 var(--spacing-2);
}

.usecase-detail__controls {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-4);
  margin-top: var(--spacing-4);
}

.usecase-detail__control {
  padding: var(--spacing-4) var(--spacing-5);
  background: var(--color-bg-gray);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
}

.usecase-detail__control strong {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-text);
  margin-bottom: var(--spacing-2);
}

.usecase-detail__control p {
  font-size: var(--font-size-xs);
  line-height: 1.7;
}

.usecase-detail__steps {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
  margin-top: var(--spacing-3);
  padding-left: var(--spacing-5);
}

.usecase-detail__steps li {
  font-size: var(--font-size-sm);
  color: var(--color-text);
  font-weight: 500;
  line-height: 1.8;
}

@keyframes panelFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.usecase-badge {
  display: inline-block;
  padding: var(--spacing-2) var(--spacing-4);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 700;
  margin-bottom: var(--spacing-4);
}

.usecase-badge--blue { background: var(--color-bg-blue-light); color: var(--color-primary); }
.usecase-badge--orange { background: #FFF7ED; color: var(--color-secondary); }
.usecase-badge--green { background: #F0FDF4; color: var(--color-green); }
.usecase-badge--purple { background: #FAF5FF; color: #9333EA; }
.usecase-badge--teal { background: #F0FDFA; color: var(--color-teal); }
.usecase-badge--red { background: #FFF1F2; color: var(--color-red); }

.usecase-panel__title {
  font-size: clamp(var(--font-size-lg), 3vw, var(--font-size-2xl));
  font-weight: 900;
  line-height: 1.35;
  color: var(--color-text);
  margin-bottom: var(--spacing-4);
}

.usecase-panel__desc {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--spacing-6);
}

.usecase-panel__list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}

.usecase-panel__list li {
  font-size: var(--font-size-sm);
  color: var(--color-text);
  font-weight: 500;
  padding: var(--spacing-2) 0;
  border-bottom: 1px solid var(--color-border-light);
}

.usecase-panel__list li:last-child { border-bottom: none; }

/* =========================================
   INSTALL SECTION
   ========================================= */
.install__manga {
  margin-bottom: var(--spacing-12);
  text-align: center;
}

.install__steps {
  display: flex;
  align-items: stretch;
  gap: var(--spacing-2);
  margin-bottom: var(--spacing-8);
  flex-wrap: wrap;
  justify-content: center;
}

.install-step {
  flex: 1;
  min-width: 160px;
  max-width: 240px;
  display: flex;
  flex-direction: column;
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--spacing-6);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.install-step:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }

.install-step__num {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: white;
  font-size: var(--font-size-xl);
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-4);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.install-step__content {
  flex: 1;
  text-align: left;
}

.install-step__content h3 {
  font-size: var(--font-size-sm);
  font-weight: 700;
  margin-bottom: var(--spacing-2);
  color: var(--color-text);
  text-align: center;
}

.install-step__content p {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.install-step__arrow {
  color: var(--color-text-light);
  font-size: var(--font-size-xl);
  font-weight: 700;
  align-self: center;
  flex-shrink: 0;
}

.install__note {
  background: #FFF7ED;
  border: 1px solid #FED7AA;
  border-radius: var(--radius-lg);
  padding: var(--spacing-3) var(--spacing-4);
  margin-bottom: var(--spacing-8);
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

.install__cta { text-align: center; }

/* =========================================
   PRICING SECTION
   ========================================= */
.pricing__wrapper {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: var(--spacing-8);
  max-width: 560px;
  margin-inline: auto;
  margin-bottom: var(--spacing-16);
}

.pricing-card {
  background: white;
  border-radius: var(--radius-2xl);
  padding: var(--spacing-10) var(--spacing-8);
  box-shadow: var(--shadow-xl);
  border: 2px solid var(--color-primary-light);
  position: relative;
  overflow: hidden;
}

.pricing-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
}

.pricing-card__badge {
  position: absolute;
  top: 20px;
  right: -10px;
  background: linear-gradient(135deg, var(--color-green), #059669);
  color: white;
  font-size: var(--font-size-sm);
  font-weight: 700;
  padding: var(--spacing-2) var(--spacing-6);
  box-shadow: var(--shadow-md);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 8px 100%);
}

.pricing-card__header { margin-bottom: var(--spacing-6); padding-right: 6rem; }

.pricing-card__name {
  font-size: var(--font-size-xl);
  font-weight: 900;
  color: var(--color-text);
  margin-bottom: var(--spacing-2);
}

.pricing-card__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

.pricing-card__price-block {
  margin-bottom: var(--spacing-8);
}

.pricing-card__price-original {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--spacing-2);
  margin-bottom: var(--spacing-2);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.pricing-card__price-original-amount {
  text-decoration: line-through;
  text-decoration-thickness: 1.5px;
  font-weight: 700;
}

.pricing-card__price-original-period {
  font-size: var(--font-size-xs);
}

.pricing-card__price {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--spacing-2);
  line-height: 1;
}

.pricing-card__notes--campaign {
  margin-top: var(--spacing-4);
}

.pricing-card__campaign {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: var(--color-primary);
  background: color-mix(in srgb, var(--color-primary) 10%, white);
  border: 1px solid color-mix(in srgb, var(--color-primary) 25%, white);
  border-radius: var(--radius-sm);
  padding: 0.2em 0.6em;
}

.pricing-card__price-row {
  display: flex;
  align-items: flex-end;
  gap: var(--spacing-1);
}

.pricing-card__currency {
  font-size: var(--font-size-2xl);
  font-weight: 900;
  color: var(--color-primary);
  padding-bottom: 4px;
}

.pricing-card__amount {
  font-size: clamp(3rem, 6vw, 4rem);
  font-weight: 900;
  color: var(--color-primary);
  line-height: 1;
}

.pricing-card__period {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  padding-bottom: 8px;
}

.pricing-card__features {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-8);
  border-top: 1px solid var(--color-border-light);
  padding-top: var(--spacing-6);
  list-style: none;
}

.pricing-card__features li {
  position: relative;
  padding-left: 1.5rem;
  font-size: var(--font-size-sm);
  color: var(--color-text);
  font-weight: 500;
  line-height: 1.6;
}

.pricing-card__features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--color-primary);
}

.pricing-card__feature-note {
  display: block;
  margin-top: 0.35em;
  font-size: var(--font-size-xs);
  font-weight: 400;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.pricing-card__trial {
  background: var(--color-bg-gray);
  border-radius: var(--radius-lg);
  padding: var(--spacing-5) var(--spacing-5);
  margin-bottom: var(--spacing-6);
}

.pricing-card__trial-title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--spacing-3);
}

.pricing-card__notes {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
  list-style: none;
  margin: 0;
  padding: 0;
  text-align: left;
}

.pricing-card__notes li {
  position: relative;
  padding-left: 1rem;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  line-height: 1.7;
  text-align: left;
}

.pricing-card__notes li::before {
  content: '・';
  position: absolute;
  left: 0;
  color: var(--color-text-muted);
}

.pricing-card__cta { width: 100%; }

.pricing__points {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-3);
  list-style: none;
  margin: 0;
  padding: 0;
}

.pricing__point {
  text-align: left;
  background: var(--color-bg-gray);
  border-radius: var(--radius-lg);
  padding: var(--spacing-4);
}

.pricing__point-label {
  display: block;
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-2);
}

.pricing__point p {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  font-weight: 500;
  line-height: 1.5;
  margin: 0;
}

/* PC: 2カラムで縦長感を抑える */
@media (min-width: 900px) {
  .pricing__wrapper {
    max-width: 920px;
    gap: var(--spacing-6);
  }

  .pricing-card {
    display: grid;
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    column-gap: var(--spacing-10);
    row-gap: var(--spacing-6);
    padding: var(--spacing-10) var(--spacing-10);
    align-items: start;
  }

  .pricing-card__header {
    grid-column: 1 / -1;
    margin-bottom: 0;
    padding-right: 8rem;
  }

  .pricing-card__desc {
    max-width: 40rem;
  }

  .pricing-card__price-block {
    margin-bottom: 0;
    padding-right: var(--spacing-4);
  }

  .pricing-card__features {
    margin-bottom: 0;
    border-top: none;
    padding-top: 0;
    gap: var(--spacing-3);
  }

  .pricing-card__trial {
    grid-column: 1 / -1;
    margin-bottom: 0;
    display: grid;
    grid-template-columns: auto 1fr;
    column-gap: var(--spacing-6);
    align-items: start;
  }

  .pricing-card__trial-title {
    margin-bottom: 0;
    padding-top: 0.15rem;
    white-space: nowrap;
  }

  .pricing-card__cta {
    grid-column: 1 / -1;
    width: auto;
    min-width: 280px;
    max-width: 360px;
    justify-self: center;
  }
}

/* FAQ */
.pricing__faq { max-width: 700px; margin-inline: auto; }
.pricing__faq-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--spacing-6);
  color: var(--color-text);
}

.faq-list { display: flex; flex-direction: column; gap: var(--spacing-2); }

.faq-item {
  background: white;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  overflow: hidden;
}

.faq-item__q {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-4);
  padding: var(--spacing-4) var(--spacing-6);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  text-align: left;
  transition: var(--transition-fast);
}

.faq-item__q:hover { background: var(--color-bg-gray); }

.faq-item__q[aria-expanded="true"] {
  background: var(--color-bg-blue-light);
  color: var(--color-primary);
}

.faq-item__arrow {
  flex-shrink: 0;
  font-size: var(--font-size-xs);
  transition: transform 0.3s ease;
}

.faq-item__q[aria-expanded="true"] .faq-item__arrow { transform: rotate(180deg); }

.faq-item__a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  padding: 0 var(--spacing-6);
}

.faq-item__a.is-open {
  max-height: 300px;
  padding: var(--spacing-4) var(--spacing-6);
}

.faq-item__a p {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* =========================================
   CONTACT SECTION
   ========================================= */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: var(--spacing-12);
  margin-bottom: var(--spacing-16);
}

.contact__desc {
  color: rgba(255,255,255,0.75);
  font-size: var(--font-size-md);
  line-height: 1.8;
  margin-bottom: var(--spacing-6);
}

.contact__desc-label {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: rgba(255,255,255,0.85);
  margin-bottom: var(--spacing-3);
}

.contact__topics {
  list-style: none;
  margin-bottom: var(--spacing-6);
  padding-left: 0;
}

.contact__topics li {
  color: rgba(255,255,255,0.75);
  font-size: var(--font-size-sm);
  line-height: 1.8;
  padding-left: var(--spacing-4);
  position: relative;
}

.contact__topics li::before {
  content: "・";
  position: absolute;
  left: 0;
}

.contact__note {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.6);
  margin-bottom: var(--spacing-6);
  line-height: 1.7;
}

.contact__privacy-note {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.55);
  margin-top: var(--spacing-4);
  line-height: 1.7;
}

.contact__privacy-note a {
  color: rgba(255,255,255,0.85);
  text-decoration: underline;
}

.page-hero__link {
  color: var(--color-primary);
  text-decoration: underline;
}

.page-hero__link:hover {
  color: var(--color-primary-dark, #2563EB);
}

.contact__email {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-3);
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: white;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-lg);
  padding: var(--spacing-4) var(--spacing-6);
  transition: var(--transition);
  margin-bottom: var(--spacing-8);
}

.contact__email:hover {
  background: rgba(255,255,255,0.2);
  transform: translateX(4px);
}

.contact__email-icon { width: 24px; height: 24px; flex-shrink: 0; }

.contact__social-label {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.6);
  margin-bottom: var(--spacing-3);
}

.contact__social {
  margin-top: var(--spacing-6);
}

.contact__social-note {
  font-size: var(--font-size-sm);
  line-height: 1.6;
  margin: calc(var(--spacing-2) * -1) 0 var(--spacing-3);
}

.contact__social-links {
  display: flex;
  gap: var(--spacing-3);
}

.social-link {
  width: 44px;
  height: 44px;
  background: rgba(255,255,255,0.1);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  transition: var(--transition);
}

.social-link svg { width: 20px; height: 20px; fill: currentColor; }

.social-link:hover {
  transform: translateY(-3px);
  filter: brightness(1.08);
}

/* Brand colors (always on) */
.social-link--x {
  background: #0F1419;
  border-color: #0F1419;
  color: #fff;
}

/* Footer is dark — invert X for contrast */
.footer .social-link--x {
  background: #fff;
  border-color: #fff;
  color: #0F1419;
}

.social-link--facebook {
  background: #1877F2;
  border-color: #1877F2;
  color: #fff;
}

.social-link--instagram {
  background: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
  border-color: transparent;
  color: #fff;
}

.contact--light .contact__social-label {
  color: var(--color-text-dark);
  font-weight: 700;
  margin-bottom: var(--spacing-2);
}

.contact--light .contact__social-note {
  color: var(--color-text-muted);
}

.sns-inline {
  display: inline-flex;
  align-items: center;
  gap: 0.25em;
  white-space: nowrap;
}

.sns-inline svg {
  width: 0.95em;
  height: 0.95em;
  fill: currentColor;
  flex-shrink: 0;
}

.sns-inline--x { color: #0F1419; }
.sns-inline--facebook { color: #1877F2; }
.sns-inline--instagram { color: #E1306C; }

/* Contact Form */
.contact-form {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-8);
  backdrop-filter: blur(8px);
}

.form-group { margin-bottom: var(--spacing-4); }

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: rgba(255,255,255,0.85);
  margin-bottom: var(--spacing-2);
}

.required {
  background: var(--color-red);
  color: white;
  font-size: 0.625rem;
  font-weight: 700;
  padding: 1px 5px;
  border-radius: var(--radius-sm);
  margin-left: var(--spacing-2);
  vertical-align: middle;
}

.form-input {
  width: 100%;
  padding: var(--spacing-3) var(--spacing-4);
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: var(--font-size-sm);
  color: white;
  transition: var(--transition-fast);
  -webkit-appearance: none;
  appearance: none;
}

.form-input::placeholder { color: rgba(255,255,255,0.4); }

.form-input:focus {
  outline: none;
  border-color: var(--color-primary-light);
  background: rgba(255,255,255,0.15);
  box-shadow: 0 0 0 3px rgba(147, 197, 253, 0.2);
}

.form-select option { background: var(--color-bg-dark); color: white; }
.form-textarea { resize: vertical; min-height: 100px; }

.form-submit { width: 100%; margin-top: var(--spacing-2); }

.form-success {
  margin-top: var(--spacing-4);
  padding: var(--spacing-4);
  background: rgba(16, 185, 129, 0.2);
  border: 1px solid rgba(16, 185, 129, 0.4);
  border-radius: var(--radius-md);
  color: #6EE7B7;
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-align: center;
}

.form-error {
  margin-top: var(--spacing-4);
  padding: var(--spacing-4);
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.35);
  border-radius: var(--radius-md);
  color: #FCA5A5;
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-align: center;
  line-height: 1.7;
}

.form-error a {
  color: #FECACA;
  text-decoration: underline;
}

.form-warning {
  margin-top: var(--spacing-4);
  padding: var(--spacing-4);
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.35);
  border-radius: var(--radius-md);
  color: #B45309;
  font-size: var(--font-size-sm);
  font-weight: 500;
  line-height: 1.7;
}

.contact--light .form-warning {
  background: #FFFBEB;
  border-color: #FCD34D;
  color: #92400E;
}

/* Contact page – light theme (white background) */
.contact--light .contact__desc {
  color: var(--color-text-muted);
}

.contact--light .contact__desc-label {
  color: var(--color-text-dark);
}

.contact--light .contact__topics li {
  color: var(--color-text-muted);
}

.contact--light .contact__note {
  color: var(--color-text-muted);
}

.contact--light .contact__privacy-note {
  color: var(--color-text-muted);
}

.contact--light .contact__privacy-note a {
  color: var(--color-primary);
}

.contact--light .contact__email {
  color: var(--color-primary);
  background: var(--color-bg-soft);
  border: 1px solid var(--color-border);
}

.contact--light .contact__email:hover {
  background: #fff;
  border-color: var(--color-primary);
  transform: translateX(4px);
}

.contact--light .contact-form {
  background: #fff;
  border: 1px solid var(--color-border);
  box-shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
  backdrop-filter: none;
}

.contact--light .form-label {
  color: var(--color-text-dark);
}

.contact--light .form-input {
  background: #fff;
  border: 1px solid var(--color-border);
  color: var(--color-text-dark);
}

.contact--light .form-input::placeholder {
  color: var(--color-text-muted);
}

.contact--light .form-input:focus {
  background: #fff;
  border-color: var(--color-primary-light);
  box-shadow: 0 0 0 3px rgba(147, 197, 253, 0.25);
}

.contact--light .form-select option {
  background: #fff;
  color: var(--color-text-dark);
}

.contact--light .form-success {
  background: #ECFDF5;
  border-color: #A7F3D0;
  color: #047857;
}

.contact--light .form-error {
  background: #FEF2F2;
  border-color: #FECACA;
  color: #B91C1C;
}

.contact--light .form-error a {
  color: #DC2626;
}

.contact--light .company {
  border-top-color: var(--color-border);
}

.contact--light .company__title {
  color: var(--color-text-dark);
}

.contact--light .company__label {
  color: var(--color-text-muted);
}

.contact--light .company__value {
  color: var(--color-text-dark);
}

.contact--light .company__link {
  color: var(--color-primary);
}

/* Company Info */
.company {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--spacing-10);
}

.company__title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: white;
  margin-bottom: var(--spacing-6);
}

.company__info {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: flex-start;
  gap: var(--spacing-4) var(--spacing-10);
}

.company__item {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-1);
  flex: 0 0 auto;
  max-width: 20rem;
}

.company__label {
  font-size: var(--font-size-xs);
  color: rgba(255,255,255,0.5);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.company__value {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.85);
}

.company__link {
  color: var(--color-primary-light);
  text-decoration: underline;
}

.company__link:hover { color: white; }

/* =========================================
   FOOTER
   ========================================= */
.footer {
  background: #0F172A;
  color: rgba(255,255,255,0.6);
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--spacing-8);
  padding-block: var(--spacing-10);
  flex-wrap: wrap;
}

.footer__tagline {
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-3);
  color: rgba(255,255,255,0.5);
}

.footer__social {
  display: flex;
  gap: var(--spacing-3);
  margin-top: var(--spacing-4);
}

.footer__nav {
  display: flex;
  gap: var(--spacing-12);
  flex-wrap: wrap;
}

.footer__nav ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
}

.footer__nav a {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.55);
  transition: var(--transition-fast);
}

.footer__nav a:hover {
  color: white;
  text-decoration: underline;
  text-decoration-color: rgba(255, 255, 255, 0.5);
}

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-block: var(--spacing-4);
  text-align: center;
}

.footer__bottom p { font-size: var(--font-size-xs); }

/* =========================================
   FLOATING CTA & BACK TO TOP
   ========================================= */
.floating-cta {
  position: fixed;
  bottom: var(--spacing-6);
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  z-index: 900;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  display: none;
}

.floating-cta.is-visible {
  transform: translateX(-50%) translateY(0);
}

.back-to-top {
  position: fixed;
  bottom: var(--spacing-6);
  right: var(--spacing-6);
  z-index: 900;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  padding: 0;
  border: none;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: white;
  font-size: 0;
  line-height: 0;
  text-decoration: none;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: var(--transition);
  -webkit-tap-highlight-color: transparent;
}

.back-to-top::before {
  content: '';
  display: block;
  width: 12px;
  height: 12px;
  border-top: 2.5px solid currentColor;
  border-right: 2.5px solid currentColor;
  transform: rotate(-45deg);
  margin-top: 4px;
}

.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-primary-dark);
  transform: translateY(-3px);
}

/* =========================================
   RESPONSIVE - TABLET
   ========================================= */
@media (max-width: 1024px) {
  .hero__inner {
    display: flex;
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-8);
  }

  .hero__col--text,
  .hero__col--media {
    display: contents;
  }

  .hero__image-top { order: 1; max-width: 480px; width: 100%; margin-inline: auto; }
  .hero__intro { order: 2; }
  .hero__devices { order: 3; width: 100%; max-width: 560px; margin-inline: auto; }
  .hero__news { order: 4; margin-inline: auto; }
  .hero__cta { order: 5; justify-content: center; }

  .hero__badge { justify-content: center; }
  .hero__stats { margin-inline: auto; }
  /* トップの h1 のみ左寄せ（他ページは page-hero__title のため影響なし） */
  .hero .hero__title { text-align: left; }
  .hero__subtitle { text-align: left; }

  .hero__img--devices { margin-top: var(--spacing-4); }

  .contact__grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  :root { --header-height: 60px; }

  .logo__img { height: 44px; }
  .logo__img--footer { height: 48px; }

  .section { padding-block: var(--spacing-12); }
  .section__header { margin-bottom: var(--spacing-8); }

  /* Nav mobile */
  .nav {
    position: fixed;
    top: var(--header-height);
    right: 0;
    width: min(320px, 90vw);
    height: calc(100vh - var(--header-height));
    height: calc(100dvh - var(--header-height));
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: var(--spacing-6);
    background: white;
    padding: var(--spacing-6);
    padding-bottom: calc(var(--spacing-8) + env(safe-area-inset-bottom, 0px));
    box-shadow: -8px 0 30px rgba(0,0,0,0.12);
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1002;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .nav.is-open { transform: translateX(0); }

  .nav__list {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: var(--spacing-1);
  }

  .nav__list li {
    width: 100%;
  }

  .nav__link {
    display: block;
    font-size: var(--font-size-lg);
    padding: var(--spacing-3) var(--spacing-2);
    width: 100%;
    font-weight: 600;
  }

  .nav__cta {
    width: 100%;
    white-space: normal;
    line-height: 1.4;
    flex-shrink: 0;
  }

  .hamburger {
    display: flex;
    position: relative;
    z-index: 1003;
  }

  /* Nav overlay */
  .nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    z-index: 999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
  }

  .nav-overlay.is-visible {
    opacity: 1;
    pointer-events: auto;
  }

  /* Hero */
  .hero { min-height: auto; padding-top: calc(var(--header-height) + var(--spacing-6)); }
  .hero__inner { padding-block: var(--spacing-10); gap: var(--spacing-8); }
  .hero__title { font-size: var(--font-size-2xl); }
  .hero__image-badge { display: none; }

  /* Use cases */
  .tabs-scroll-wrap__hint {
    display: none; /* グリッド2行表示のためヒント不要 */
  }

  .tab {
    padding: var(--spacing-3) var(--spacing-1);
  }

  .tab__icon {
    width: 1.75rem;
    height: 1.75rem;
    font-size: 1.4rem;
  }

  .tab__label {
    font-size: 0.75rem;
  }

  .usecase-panel {
    grid-template-columns: 1fr;
    gap: var(--spacing-4);
    padding: var(--spacing-4);
  }

  .usecase-panel__detail {
    padding: 0;
    background: transparent;
    border: none;
    border-radius: 0;
  }

  .usecase-panel__nav {
    flex-direction: column;
    align-items: stretch;
    gap: var(--spacing-3);
    margin-top: var(--spacing-5);
    padding-top: var(--spacing-4);
    width: 100%;
  }

  .usecase-panel__nav-btn,
  .usecase-panel__nav-btn--next {
    width: 100%;
    max-width: none;
    flex: none;
    justify-content: flex-start;
    text-align: left;
    padding: var(--spacing-4);
    gap: var(--spacing-3);
  }

  .usecase-panel__nav-btn--next {
    justify-content: flex-end;
    text-align: right;
  }

  .usecase-panel__nav-meta {
    flex: 1;
    min-width: 0;
    align-items: flex-start;
  }

  .usecase-panel__nav-btn--next .usecase-panel__nav-meta {
    align-items: flex-end;
    text-align: right;
  }

  .usecase-panel__nav-label {
    font-size: var(--font-size-sm);
    white-space: normal;
    overflow: visible;
    text-overflow: unset;
  }

  .usecase-panel__nav-arrow {
    width: 32px;
    height: 32px;
    font-size: 1rem;
    flex-shrink: 0;
  }

  .usecase-detail__section {
    padding: var(--spacing-4);
  }

  .usecase-detail__screens,
  .usecase-detail__controls {
    grid-template-columns: 1fr;
  }

  .usecase-detail__screens,
  .usecase-detail__screens--3col,
  .usecase-detail__screens--stack {
    max-width: 100%;
  }

  .usecase-detail__screens--3col {
    grid-template-columns: 1fr;
  }

  .usecase-detail__screens--stack {
    grid-template-columns: 1fr;
  }

  .usecase-detail__screen img {
    max-height: 270px;
  }

  .usecase-detail__devices {
    grid-template-columns: 1fr;
    max-width: 100%;
    gap: var(--spacing-6);
  }

  .usecase-detail__devices-tablet {
    grid-template-columns: 1fr;
  }

  .usecase-detail__devices-tablet--triple .usecase-detail__screen:nth-child(3) {
    grid-column: auto;
    max-width: 100%;
  }

  .usecase-detail__devices-phone {
    max-width: 300px;
    margin: 0 auto;
    width: 100%;
    padding-top: 0;
  }

  .usecase-detail__devices-phone .usecase-detail__screen img {
    max-height: 330px;
  }

  .usecase-detail__commands table {
    border-collapse: separate;
    border-spacing: 0;
    font-size: var(--font-size-xs);
  }

  .usecase-detail__commands thead {
    display: none;
  }

  .usecase-detail__commands tbody {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
  }

  .usecase-detail__commands tr {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    overflow: hidden;
    background: white;
  }

  .usecase-detail__commands td:first-child {
    grid-column: 1 / -1;
    width: auto;
    background: var(--color-bg-blue-light);
    border-bottom: 1px solid var(--color-border-light);
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-text);
  }

  .usecase-detail__commands td:nth-child(2) {
    width: auto;
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--font-size-xs);
    font-weight: 700;
    color: #C2410C;
    border-right: 1px solid var(--color-border-light);
  }

  .usecase-detail__commands td:last-child {
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    font-weight: 400;
  }

  /* Install steps */
  .install__steps {
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-4);
  }

  .install-step { max-width: 100%; width: 100%; }
  .install-step__arrow { transform: rotate(90deg); }

  /* Pricing */
  .pricing-card { padding: var(--spacing-8) var(--spacing-6); }

  /* Contact */
  .contact-form { padding: var(--spacing-6); }
  .company__item { max-width: 100%; }

  /* Section headers */
  .section__title {
    font-size: var(--font-size-xl);
  }
  .section__desc {
    font-size: var(--font-size-sm);
  }

  /* Problem solution box */
  .problem__solution {
    padding: var(--spacing-5) var(--spacing-6);
    border-radius: var(--radius-xl);
  }
  .problem__solution-text {
    font-size: var(--font-size-sm);
    line-height: 1.6;
  }
  .problem__solution-text strong {
    font-size: var(--font-size-md);
  }

  /* Features */
  .features__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-4);
  }
  .feature-card {
    padding: var(--spacing-5) var(--spacing-4);
  }
  .feature-card__icon-wrap {
    width: 56px;
    height: 56px;
    margin-bottom: var(--spacing-3);
  }
  .feature-card__icon { width: 36px; height: 36px; }
  .feature-card__title { font-size: var(--font-size-sm); margin-bottom: var(--spacing-2); }
  .feature-card__desc  { font-size: var(--font-size-xs); margin-bottom: var(--spacing-3); }
  .feature-card__link  { font-size: var(--font-size-xs); }

  /* Overview manga */
  .overview.section { padding-block: var(--spacing-6) var(--spacing-8); }
  .overview__img { border-radius: var(--radius-xl); }

  /* Floating CTA */
  .floating-cta { display: block; }

  /* Footer */
  .footer__inner { flex-direction: column; }
  .footer__nav { gap: var(--spacing-8); }
}

@media (max-width: 480px) {
  .hero__cta { flex-direction: column; }
  .hero__cta .btn { width: 100%; }
  .problem__grid { grid-template-columns: 1fr; }
  .problem__card {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    text-align: left;
  }
  .problem__icon-img {
    width: 72px;
    height: 108px;
    margin: 0;
    flex-shrink: 0;
  }
  .features__grid { grid-template-columns: repeat(2, 1fr); gap: var(--spacing-3); }
  .feature-card { padding: var(--spacing-4) var(--spacing-3); }
  .feature-card__icon-wrap { width: 44px; height: 44px; margin-bottom: var(--spacing-2); }
  .feature-card__icon { width: 28px; height: 28px; }
  .hero__stats { flex-direction: column; gap: var(--spacing-2); }
  .stat__divider { width: 60px; height: 1px; }
  .tabs { padding: var(--spacing-2); gap: var(--spacing-1); }
  .tab { padding: var(--spacing-2) var(--spacing-1); }
  .tab__icon { font-size: 1.3rem; }
  .tab__label { font-size: 0.7rem; }
  .pricing__points { grid-template-columns: 1fr; }
  .pricing-card__header { padding-right: 5rem; }
}

/* =========================================
   SUB-PAGE STYLES
   ========================================= */

/* Active nav link */
.nav__link--active {
  color: var(--color-primary);
  font-weight: 700;
}

/* Page Hero */
.page-hero {
  padding: calc(var(--header-height) + var(--spacing-10)) 0 var(--spacing-8);
  background: var(--color-bg-soft);
}

.page-hero--dark {
  background: var(--color-text-dark);
}

.page-hero .back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  color: var(--color-primary);
  font-weight: 600;
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-6);
  transition: opacity 0.2s;
}

.page-hero .back-link:hover { opacity: 0.75; }

.back-link--light {
  color: rgba(255,255,255,0.7);
}

.back-link--light:hover { opacity: 0.9; }

.page-hero__title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 900;
  line-height: 1.25;
  color: var(--color-text-dark);
  margin: var(--spacing-3) 0 var(--spacing-4);
}

.page-hero__title--light { color: #fff; }

.page-hero__desc {
  font-size: var(--font-size-md);
  color: var(--color-text-muted);
  line-height: 1.8;
  max-width: 52rem;
}

.page-hero__desc--light { color: rgba(255,255,255,0.8); }

/* Back-to-top CTA section */
.page-back-cta {
  padding: var(--spacing-12) 0;
}

/* Setup placeholder cards */
.setup-placeholder__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-8);
  max-width: 800px;
  margin: 0 auto;
}

.setup-placeholder__card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-8);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-3);
}

.setup-placeholder__icon {
  font-size: 2.5rem;
  line-height: 1;
}

.setup-placeholder__card h3 {
  font-size: var(--font-size-md);
  font-weight: 700;
  color: var(--color-text-dark);
}

.setup-placeholder__card p {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.badge {
  display: inline-block;
  padding: var(--spacing-1) var(--spacing-3);
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.badge--coming {
  background: var(--color-bg-gray);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

/* Setup guide (install.html 詳細セットアップ) */
.setup-guide__toc {
  max-width: 720px;
  margin: 0 auto var(--spacing-10);
  padding: var(--spacing-6) var(--spacing-8);
  background: white;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
}

.setup-guide__toc-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-2) var(--spacing-8);
  list-style: none;
  counter-reset: setup-toc;
  padding: 0;
  margin: 0;
}

.setup-guide__toc-list li {
  counter-increment: setup-toc;
}

.setup-guide__toc-list a {
  display: block;
  padding: var(--spacing-2) 0;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary-dark);
  transition: var(--transition);
}

.setup-guide__toc-list a:hover {
  color: var(--color-primary);
}

.setup-guide {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-12);
}

.setup-guide__step {
  background: white;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-8) var(--spacing-8) var(--spacing-10);
  box-shadow: var(--shadow-sm);
}

.setup-guide__step-header {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-5);
}

.setup-guide__step-num {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: white;
  font-size: var(--font-size-lg);
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.25);
}

.setup-guide__step-title {
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: var(--color-text-dark);
  line-height: 1.4;
  margin: 0;
  padding-top: 6px;
}

.setup-guide__lead {
  font-size: var(--font-size-base);
  color: var(--color-text);
  line-height: 1.85;
  margin-bottom: var(--spacing-6);
}

.setup-guide__figure {
  margin: 0 0 var(--spacing-8);
  background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.setup-guide__figure--compact {
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.setup-guide__figure--medium {
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.setup-guide__figure--phone {
  max-width: 220px;
  margin-left: auto;
  margin-right: auto;
}

.setup-guide__figure--phone-sm {
  max-width: 140px;
  margin-left: auto;
  margin-right: auto;
}

.setup-guide__figure--tablet {
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.setup-guide__figure-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--spacing-5);
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--spacing-8);
  align-items: end;
}

.setup-guide__figure-row--tablet {
  max-width: 960px;
  align-items: start;
}

.setup-guide__figure-row--tablet .setup-guide__figure--tablet {
  max-width: none;
}

.setup-guide__figure-row .setup-guide__figure {
  margin-bottom: 0;
}

/* 2-column layout: figure left, content right */
.setup-guide__step-body {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: var(--spacing-6);
  align-items: start;
}

.setup-guide__step-body .setup-guide__figure {
  margin-bottom: 0;
}

.setup-guide__step-content {
  min-width: 0;
}

.setup-guide__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
}

.setup-guide__figure figcaption {
  padding: var(--spacing-3) var(--spacing-5);
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: var(--color-text-muted);
  text-align: center;
  background: white;
  border-top: 1px solid var(--color-border-light);
}

.setup-guide__block {
  margin-bottom: var(--spacing-8);
}

.setup-guide__block:last-child {
  margin-bottom: 0;
}

.setup-guide__block-title {
  font-size: var(--font-size-md);
  font-weight: 800;
  color: #1a237e;
  margin-bottom: var(--spacing-2);
}

.setup-guide__block-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text);
  line-height: 1.8;
  margin-bottom: var(--spacing-4);
}

.setup-guide__block-note {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: var(--spacing-3);
  line-height: 1.7;
}

.setup-guide__table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-4);
}

.setup-guide__table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
  line-height: 1.65;
}

.setup-guide__table th,
.setup-guide__table td {
  padding: var(--spacing-3) var(--spacing-4);
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--color-border-light);
}

.setup-guide__table th {
  background: var(--color-bg-gray);
  font-weight: 700;
  color: var(--color-text-dark);
  white-space: nowrap;
}

.setup-guide__table tr:last-child th,
.setup-guide__table tr:last-child td {
  border-bottom: none;
}

.setup-guide__table td:first-child {
  min-width: 140px;
  font-weight: 600;
  color: var(--color-text-dark);
}

.setup-guide__required {
  display: inline-block;
  margin-left: 4px;
  padding: 1px 6px;
  border-radius: 4px;
  background: #FEE2E2;
  color: #B91C1C;
  font-size: 0.65rem;
  font-weight: 700;
  vertical-align: middle;
}

.setup-guide__optional {
  display: inline-block;
  margin-left: 4px;
  padding: 1px 6px;
  border-radius: 4px;
  background: var(--color-bg-gray);
  color: var(--color-text-muted);
  font-size: 0.65rem;
  font-weight: 700;
  vertical-align: middle;
}

.setup-guide__note {
  box-sizing: border-box;
  border-radius: var(--radius-lg);
  padding: var(--spacing-3) var(--spacing-4);
  font-size: var(--font-size-sm);
  line-height: 1.75;
}

.setup-guide__note p {
  margin: 0;
}

.setup-guide__note--info {
  background: #EFF6FF;
  border: 1px solid #BFDBFE;
  color: #1E3A5F;
  margin-bottom: var(--spacing-5);
}

.setup-guide__note--warn {
  background: #FFF7ED;
  border: 1px solid #FED7AA;
  color: #7C2D12;
}

.setup-guide__list {
  margin: 0;
  padding-left: 1.25rem;
  font-size: var(--font-size-sm);
  color: var(--color-text);
  line-height: 1.85;
  list-style: disc;
}

.setup-guide__list li + li {
  margin-top: var(--spacing-2);
}

.setup-guide__list .setup-guide__list {
  list-style: circle;
  margin-top: var(--spacing-2);
  margin-bottom: var(--spacing-1);
}

.setup-guide__quote {
  background: var(--color-bg-gray);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  padding: var(--spacing-3) var(--spacing-4);
  margin-bottom: var(--spacing-5);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  line-height: 1.8;
}

.setup-guide__quote-title {
  font-weight: 800;
  color: var(--color-text-dark);
  margin-bottom: var(--spacing-2);
}

.setup-guide__quote p {
  margin: 0;
}

.setup-guide__troubleshoot {
  margin-top: var(--spacing-12);
  padding: var(--spacing-8);
  background: white;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-sm);
}

.setup-guide__troubleshoot-title {
  font-size: var(--font-size-lg);
  font-weight: 800;
  color: var(--color-text-dark);
  margin-bottom: var(--spacing-2);
}

.setup-guide__troubleshoot-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-6);
  line-height: 1.7;
}

.setup-guide__troubleshoot-list {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

.setup-guide__troubleshoot-item {
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--spacing-3) var(--spacing-4);
  background: var(--color-bg-gray);
}

.setup-guide__troubleshoot-item dt {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text-dark);
  margin-bottom: var(--spacing-2);
}

.setup-guide__troubleshoot-placeholder {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin: 0;
}

.setup-placeholder--single {
  margin-top: var(--spacing-10);
}

.setup-placeholder--single .setup-placeholder__card {
  max-width: 400px;
  margin: 0 auto;
}

/* Install sub-pages: guide navigation */
.install-subnav {
  padding: var(--spacing-5) 0;
  border-bottom: 1px solid var(--color-border-light);
}

.install-subnav__panel {
  background: white;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  padding: var(--spacing-5) var(--spacing-6);
  box-shadow: var(--shadow-sm);
}

.install-subnav__overview {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-1);
  padding: var(--spacing-3) var(--spacing-4);
  border-radius: var(--radius-lg);
  text-decoration: none;
  border: 1px solid var(--color-border-light);
  background: var(--color-bg-gray);
  transition: var(--transition);
}

.install-subnav__overview:hover {
  border-color: var(--color-primary-light);
  background: #F8FAFC;
}

.install-subnav__overview.is-active {
  background: #EFF6FF;
  border-color: #BFDBFE;
  pointer-events: none;
}

.install-subnav__overview-label {
  font-size: var(--font-size-sm);
  font-weight: 800;
  color: var(--color-text-dark);
}

.install-subnav__overview-desc {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  line-height: 1.5;
}

.install-subnav__groups {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: var(--spacing-6);
  margin-top: var(--spacing-5);
  padding-top: var(--spacing-5);
  border-top: 1px solid var(--color-border-light);
}

.install-subnav__group-title {
  font-size: var(--font-size-xs);
  font-weight: 800;
  color: var(--color-text-muted);
  margin: 0 0 var(--spacing-3);
  line-height: 1.4;
}

.install-subnav__list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
  list-style: none;
  margin: 0;
  padding: 0;
}

.install-subnav__list--indented {
  padding-left: var(--spacing-4);
  border-left: 3px solid var(--color-primary-light);
}

.install-subnav__list a {
  display: block;
  padding: var(--spacing-2) var(--spacing-4);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  border: 1px solid transparent;
  transition: var(--transition);
  line-height: 1.45;
}

.install-subnav__list a:hover {
  background: var(--color-bg-gray);
  color: var(--color-primary-dark);
}

.install-subnav__list a.is-active {
  color: white;
  background: var(--color-primary);
  border-color: var(--color-primary);
  pointer-events: none;
}

.install-subnav--inline {
  margin-top: var(--spacing-6);
  margin-bottom: var(--spacing-8);
}

.install-subnav--inline .install-subnav__panel {
  padding: var(--spacing-4) var(--spacing-5);
}

.install-subnav--inline .install-subnav__list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-3);
}

@media (max-width: 960px) {
  .install-subnav--inline .install-subnav__list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .install-subnav--inline .install-subnav__list {
    grid-template-columns: 1fr;
  }
}

.install-subnav__group--below {
  margin-top: var(--spacing-5);
  padding-top: var(--spacing-5);
  border-top: 1px solid var(--color-border-light);
}

.install-related {
  padding-top: var(--spacing-10);
  padding-bottom: var(--spacing-10);
}

.install-related .page-nav-cards__grid {
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  grid-template-columns: repeat(2, 1fr);
}

/* Pricing teaser (on index) */
.pricing-teaser__highlights {
  display: flex;
  justify-content: center;
  gap: var(--spacing-12);
  margin-top: var(--spacing-8);
}

.pricing-teaser__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-2);
  text-align: center;
}

.pricing-teaser__icon {
  font-size: 2rem;
  line-height: 1;
}

.pricing-teaser__item p {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  font-weight: 600;
}

/* Contact teaser (on index) */
.contact-teaser__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-8);
  flex-wrap: wrap;
}

.contact-teaser__desc {
  color: rgba(255,255,255,0.75);
  margin-top: var(--spacing-4);
  line-height: 1.8;
}

/* Contact page – back button */
.contact__back {
  margin-top: var(--spacing-12);
  text-align: center;
}

/* FAQ contact note */
.faq-contact-note {
  text-align: center;
  margin-top: var(--spacing-8);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* Outline-light button variant */
.btn--outline-light {
  background: transparent;
  border: 2px solid rgba(255,255,255,0.6);
  color: #fff;
}

.btn--outline-light:hover {
  background: rgba(255,255,255,0.15);
  border-color: #fff;
}

@media (max-width: 768px) {
  .setup-placeholder__grid { grid-template-columns: 1fr; }
  .setup-guide__toc-list { grid-template-columns: 1fr; }
  .setup-guide__step { padding: var(--spacing-6); }
  .setup-guide__step-title { font-size: var(--font-size-lg); }
  .setup-guide__table th,
  .setup-guide__table td { padding: var(--spacing-2) var(--spacing-3); font-size: var(--font-size-xs); }
  .install-subnav__groups { grid-template-columns: 1fr; gap: var(--spacing-5); }
  .install-subnav__panel { padding: var(--spacing-4) var(--spacing-5); }
  .install-related .page-nav-cards__grid { grid-template-columns: 1fr; }
  .pricing-teaser__highlights { gap: var(--spacing-6); }
  .contact-teaser__inner { flex-direction: column; text-align: center; }
  .setup-guide__step-body { grid-template-columns: 1fr; }
  .setup-guide__step-body .setup-guide__figure { margin-bottom: var(--spacing-6); }
  .setup-guide__figure-row { grid-template-columns: 1fr; max-width: 260px; margin-left: auto; margin-right: auto; }
  .setup-guide__figure-row--tablet { max-width: 100%; }
  .setup-guide__figure--phone { max-width: 200px; }
  .setup-guide__figure--phone-sm { max-width: 130px; }
  .setup-guide__figure--tablet { max-width: 100%; }

  /* 説明枠：スマホでは角丸に文字が寄りやすいため、PCより内側余白をやや多めに */
  .setup-guide__note,
  .setup-guide__note--info,
  .setup-guide__note--warn,
  .setup-guide__quote,
  .setup-guide__troubleshoot-item,
  .usecase-detail__note,
  .install__note {
    padding: 0.875rem 1rem;
  }

  /* 3カラムテーブル → スマホはカード型スタック表示 */
  .setup-guide__table--stacked {
    border-collapse: separate;
    border-spacing: 0;
  }
  .setup-guide__table--stacked thead { display: none; }
  .setup-guide__table--stacked tbody { display: flex; flex-direction: column; gap: var(--spacing-3); }
  .setup-guide__table--stacked tr {
    display: block;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    background: white;
    overflow: hidden;
  }
  /* 1列目（項目名）: カードのヘッダー行 */
  .setup-guide__table--stacked td:first-child {
    display: block;
    min-width: unset;
    padding: var(--spacing-2) var(--spacing-3);
    background: var(--color-bg-gray);
    border-bottom: 1px solid var(--color-border-light);
    font-size: var(--font-size-sm);
  }
  /* 2列目以降: ラベル＋値のペアで表示
     grid は子ノードが別アイテム化、float は折り返しがラベル下へ回り込むため
     absolute + padding で本文を通常フローに保つ */
  .setup-guide__table--stacked td:not(:first-child) {
    display: block;
    position: relative;
    padding: var(--spacing-2) var(--spacing-3) var(--spacing-2) calc(var(--spacing-3) + 3em + var(--spacing-2));
    border-bottom: 1px solid var(--color-border-light);
    font-size: var(--font-size-xs);
  }
  .setup-guide__table--stacked td:last-child {
    border-bottom: none;
  }
  .setup-guide__table--stacked td::before {
    content: attr(data-label);
    position: absolute;
    left: var(--spacing-3);
    top: var(--spacing-2);
    width: 3em;
    font-weight: 700;
    color: var(--color-text-muted);
    font-size: 0.65rem;
    white-space: nowrap;
  }
  .setup-guide__table--stacked td:first-child::before { display: none; }
}

/* =========================================
   PAGE NAV CARDS（詳細ページ誘導カード）
   ========================================= */
.page-nav-cards__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-6);
  margin-top: var(--spacing-8);
}

.page-nav-card {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
  padding: var(--spacing-8) var(--spacing-6);
  background: #fff;
  border-radius: var(--radius-xl);
  border: 2px solid var(--color-border);
  text-decoration: none;
  color: inherit;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  box-shadow: var(--shadow-sm);
}

.page-nav-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
  text-decoration: none;
}

.page-nav-card__icon {
  font-size: 2.4rem;
  line-height: 1;
}

.page-nav-card__title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
  margin: 0;
}

.page-nav-card__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  flex: 1;
  margin: 0;
}

.page-nav-card__link {
  display: inline-block;
  margin-top: var(--spacing-2);
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-primary);
}

.page-nav-cards__grid--2col {
  grid-template-columns: repeat(2, 1fr);
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

/* タブレット・スマホ：2列コンパクト表示 */
@media (max-width: 960px) {
  .page-nav-cards__grid--2col {
    grid-template-columns: repeat(2, 1fr);
    max-width: 100%;
  }

  .page-nav-cards__grid {
    grid-template-columns: repeat(2, 1fr);
    max-width: 100%;
    margin-left: 0;
    margin-right: 0;
  }

  .page-nav-card {
    padding: var(--spacing-4) var(--spacing-4);
    gap: var(--spacing-2);
  }

  .page-nav-card__icon {
    font-size: 1.75rem;
  }

  .page-nav-card__title {
    font-size: var(--font-size-md);
  }

  .page-nav-card__desc {
    font-size: var(--font-size-xs);
    line-height: 1.6;
  }

  .page-nav-card__link {
    font-size: var(--font-size-xs);
    margin-top: var(--spacing-1);
  }
}

/* 極小スマホ：1列 */
@media (max-width: 400px) {
  .page-nav-cards__grid--2col,
  .page-nav-cards__grid {
    grid-template-columns: 1fr;
    max-width: 360px;
    margin-inline: auto;
  }
}

/* =========================================
   PRINT STYLES
   ========================================= */
@media print {
  .header, .floating-cta, .back-to-top, .hero__bg-shapes { display: none; }
  .section { page-break-inside: avoid; }
  body { font-size: 12pt; }
}