/* ============================================
   ソラレピ B2B LP - style.css
   Design Tokens + All Components
   Mobile-first: SP → TB(768px) → PC(1280px)
   ============================================ */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-base);
  color: var(--color-text-secondary);
  background: var(--color-bg-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
  list-style: none;
}

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

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

/* ── Design Tokens ── */
:root {
  /* Colors */
  --color-primary: #5A9E2F;
  --color-primary-dark: #3D7A1A;
  --color-primary-light: #E8F5E0;

  --color-secondary: #F28C1F;
  --color-secondary-light: #FFF5E6;

  --color-accent-red: #EE4848;
  --color-accent-teal: #44BDA5;

  --color-text-primary: #2D2D2D;
  --color-text-secondary: #555555;
  --color-text-tertiary: #888888;
  --color-text-inverse: #FFFFFF;

  --color-bg-white: #FFFFFF;
  --color-bg-light: #F8F9FA;
  --color-bg-dark: #1A2332;

  --color-border: #E0E0E0;
  --color-border-light: #F0F0F0;

  /* Category Colors */
  --color-cat-beauty: #EE4848;
  --color-cat-kids: #5A9E2F;
  --color-cat-care: #44BDA5;
  --color-cat-athlete: #F28C1F;

  /* Typography */
  --font-heading: 'Inter', 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Meiryo', sans-serif;
  --font-body: 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Meiryo', 'Inter', sans-serif;
  --font-number: 'Inter', 'Helvetica Neue', sans-serif;

  --font-size-h1: 1.75rem;
  --font-size-h2: 1.5rem;
  --font-size-h2-num: 2rem;
  --font-size-h3: 1.125rem;
  --font-size-h4: 1rem;
  --font-size-lg: 1rem;
  --font-size-base: 0.9375rem;
  --font-size-sm: 0.8125rem;
  --font-size-xs: 0.75rem;

  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  --font-weight-black: 900;

  --line-height-tight: 1.1;
  --line-height-heading: 1.35;
  --line-height-base: 1.75;
  --line-height-relaxed: 1.8;

  --letter-spacing-tight: -0.01em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.03em;
  --letter-spacing-wider: 0.05em;

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;

  --section-gap-lg: 80px;
  --section-gap-md: 60px;
  --section-gap-sm: 40px;
  --section-padding-cta: 48px;

  /* Layout */
  --content-max-width: 1120px;
  --content-padding-sp: 20px;
  --content-padding-tb: 40px;
  --gutter-sp: 16px;
  --gutter-tb: 24px;
  --gutter-pc: 32px;

  /* Borders & Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.08);
  --shadow-cta: 0 4px 12px rgba(90, 158, 47, 0.3);
  --shadow-cta-hover: 0 6px 20px rgba(90, 158, 47, 0.4);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.2s ease;
  --transition-slow: 0.3s ease;
}

/* ── Tablet ── */
@media (min-width: 768px) {
  :root {
    --font-size-h1: 2.25rem;
    --font-size-h2: 1.75rem;
    --font-size-h2-num: 2.5rem;
    --font-size-h3: 1.25rem;
    --font-size-lg: 1.0625rem;

    --section-gap-lg: 100px;
    --section-gap-md: 80px;
    --section-gap-sm: 56px;
    --section-padding-cta: 56px;
  }
}

/* ── PC ── */
@media (min-width: 1280px) {
  :root {
    --font-size-h1: 2.75rem;
    --font-size-h2: 2.125rem;
    --font-size-h2-num: 3.25rem;
    --font-size-h3: 1.5rem;
    --font-size-h4: 1.125rem;
    --font-size-lg: 1.125rem;
    --font-size-base: 1rem;
    --font-size-sm: 0.875rem;

    --section-gap-lg: 120px;
    --section-gap-md: 100px;
    --section-gap-sm: 72px;
    --section-padding-cta: 64px;
  }
}

/* ============================================
   Layout
   ============================================ */
.container {
  width: 100%;
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 var(--content-padding-sp);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--content-padding-tb);
  }
}

@media (min-width: 1280px) {
  .container {
    padding: 0;
  }
}

/* ============================================
   Section Header
   ============================================ */
.section-header {
  margin-bottom: var(--spacing-xl);
}

.section-header--center {
  text-align: center;
}

.section-header__accent {
  width: 60px;
  height: 3px;
  background: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.section-header--center .section-header__accent {
  margin-left: auto;
  margin-right: auto;
}

.section-header__title {
  font-family: var(--font-heading);
  font-size: var(--font-size-h2);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-heading);
  color: var(--color-text-primary);
}

.section-header__sub {
  margin-top: var(--spacing-sm);
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

@media (min-width: 768px) {
  .section-header {
    margin-bottom: var(--spacing-2xl);
  }
}

/* ============================================
   CTA Buttons
   ============================================ */

/* Primary CTA */
.cta-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 16px 40px;
  min-width: 280px;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-spacing-wider);
  border: none;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-cta);
  cursor: pointer;
  transition: all var(--transition-base);
  text-align: center;
}

.cta-primary:hover {
  background: var(--color-primary-dark);
  box-shadow: var(--shadow-cta-hover);
  transform: translateY(-2px);
}

.cta-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-cta);
}

@media (min-width: 768px) {
  .cta-primary {
    font-size: 18px;
  }
}

/* Secondary CTA */
.cta-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 14px 32px;
  min-width: 240px;
  background: transparent;
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: var(--font-weight-medium);
  letter-spacing: var(--letter-spacing-wide);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
}

.cta-secondary:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary-dark);
}

@media (min-width: 768px) {
  .cta-secondary {
    font-size: 16px;
  }
}

/* Text Link CTA */
.cta-text-link {
  display: inline-block;
  color: var(--color-primary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  text-decoration: underline;
  text-underline-offset: 4px;
  transition: color var(--transition-base);
}

.cta-text-link:hover {
  color: var(--color-primary-dark);
}

/* Header CTA */
.cta-header {
  display: none;
  padding: 8px 20px;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  font-size: 13px;
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-spacing-wide);
  border: none;
  border-radius: 6px;
  transition: background var(--transition-base);
  white-space: nowrap;
  margin-left: var(--spacing-lg);
  flex-shrink: 0;
}

.cta-header:hover {
  background: var(--color-primary-dark);
}

@media (min-width: 768px) {
  .cta-header {
    display: inline-block;
    font-size: 14px;
  }
}

/* CTA Band Button */
.cta-band__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 16px 48px;
  background: var(--color-bg-white);
  color: var(--color-secondary);
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: var(--font-weight-bold);
  border: none;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
  cursor: pointer;
  transition: all var(--transition-base);
}

.cta-band__button:hover {
  background: var(--color-secondary-light);
  transform: translateY(-2px);
}

@media (min-width: 768px) {
  .cta-band__button {
    font-size: 18px;
  }
}

/* ============================================
   SEC-01: Header
   ============================================ */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-bg-white);
  border-bottom: 1px solid var(--color-border-light);
  transition: box-shadow var(--transition-base);
}

.header.is-scrolled {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

.header__inner {
  display: flex;
  align-items: center;
  height: 60px;
  max-width: none;
  padding: 0 var(--content-padding-sp);
}

.header__logos {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-shrink: 0;
}

.header__logo-link {
  display: flex;
  align-items: center;
}

.header__logo--shidax {
  width: 100px;
  height: auto;
}

.header__logo--solarepi {
  width: 110px;
  height: auto;
}

.header__logo-divider {
  width: 1px;
  height: 24px;
  background: var(--color-border);
}

.header__nav {
  display: none;
  margin-left: auto;
}

.header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.header__nav-link {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.header__nav-link:hover {
  color: var(--color-primary);
}

@media (min-width: 768px) {
  .header__inner {
    padding: 0 var(--content-padding-tb);
  }

  .header__nav {
    display: block;
  }

  .header__logo--shidax {
    width: 120px;
  }

  .header__logo--solarepi {
    width: 140px;
  }
}

@media (min-width: 1280px) {
  .header__inner {
    padding: 0 40px;
  }
}

/* ============================================
   SEC-02: Hero
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__bg-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.78) 0%,
    rgba(255, 255, 255, 0.72) 60%,
    rgba(255, 255, 255, 0.60) 100%
  );
}

.hero__content {
  position: relative;
  z-index: 1;
  width: 100%;
  padding-top: 20px;
  padding-bottom: var(--spacing-2xl);
  text-align: center;
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding-left: var(--content-padding-sp);
  padding-right: var(--content-padding-sp);
}

.hero__lead {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  margin-bottom: var(--spacing-md);
  line-height: var(--line-height-relaxed);
}

.hero__title {
  font-family: var(--font-heading);
  font-size: var(--font-size-h1);
  font-weight: var(--font-weight-black);
  line-height: 1.3;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
}

.hero__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-xl);
}

.hero__br--sp {
  display: inline;
}

/* Badges */
.hero__badges {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
}

.hero__badge {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(90, 158, 47, 0.2);
  border-radius: var(--radius-md);
}

.hero__badge-icon {
  width: 28px;
  height: 28px;
  color: var(--color-primary);
  flex-shrink: 0;
}

.hero__badge-text {
  font-size: 12px;
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  white-space: nowrap;
}

/* Stats */
.hero__stats {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  flex-wrap: wrap;
}

.hero__stat {
  text-align: center;
}

.hero__stat-number {
  display: block;
  font-family: var(--font-number);
  font-size: var(--font-size-h2-num);
  font-weight: var(--font-weight-extrabold);
  line-height: var(--line-height-tight);
  color: var(--color-primary);
}

.hero__stat-number small {
  font-size: 0.5em;
  font-weight: var(--font-weight-bold);
}

.hero__stat-number em {
  font-style: normal;
}

.hero__stat-label {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  margin-top: var(--spacing-xs);
}

.hero__group-info {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  margin-bottom: var(--spacing-xl);
}

/* Hero CTA */
.hero__cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.hero__cta .cta-primary {
  width: 100%;
  max-width: 360px;
}

@media (min-width: 768px) {
  .hero {
    min-height: 70vh;
  }

  .hero__overlay {
    background: linear-gradient(
      135deg,
      rgba(255, 255, 255, 0.82) 0%,
      rgba(255, 255, 255, 0.68) 50%,
      rgba(255, 255, 255, 0.50) 100%
    );
  }

  .hero__content {
    text-align: center;
    max-width: var(--content-max-width);
    padding-top: 20px;
    padding-left: var(--content-padding-tb);
    padding-right: var(--content-padding-tb);
  }

  .hero__badges {
    justify-content: center;
  }

  .hero__badge-icon {
    width: 32px;
    height: 32px;
  }

  .hero__badge-text {
    font-size: 14px;
  }

  .hero__stats {
    justify-content: center;
    gap: var(--spacing-xl);
  }

  .hero__group-info {
    text-align: center;
  }

  .hero__cta {
    flex-direction: row;
    justify-content: center;
  }

  .hero__cta .cta-primary {
    width: auto;
  }

  .hero__br--sp {
    display: none;
  }
}

@media (min-width: 1280px) {
  .hero {
    min-height: 85vh;
    max-height: 800px;
  }

  .hero__content {
    padding-left: 0;
    padding-right: 0;
  }
}

/* ============================================
   SEC-03: Problems
   ============================================ */
.problems {
  background: var(--color-bg-light);
  padding: var(--section-gap-sm) 0;
}

.problems__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gutter-sp);
}

.problem-card {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl) var(--spacing-lg);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base);
}

.problem-card:hover {
  box-shadow: var(--shadow-md);
}

.problem-card__icon {
  color: var(--color-text-tertiary);
  margin-bottom: var(--spacing-md);
}

.problem-card__text {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  line-height: var(--line-height-base);
}

@media (min-width: 768px) {
  .problems {
    padding: var(--section-gap-md) 0;
  }

  .problems__list {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--gutter-tb);
  }
}

@media (min-width: 1280px) {
  .problems__list {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--gutter-pc);
  }
}

/* ============================================
   SEC-04: Solution (Alternating Layout)
   ============================================ */
.solution {
  background: var(--color-bg-white);
  padding: var(--section-gap-md) 0;
}

.solution__items {
  display: flex;
  flex-direction: column;
  gap: var(--section-gap-sm);
}

.solution__item {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.solution__image {
  width: 100%;
}

.solution__img {
  width: 100%;
  height: auto;
  border-radius: 0;
  box-shadow: var(--shadow-md);
}

.solution__text {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.solution__subtitle {
  font-family: var(--font-heading);
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  line-height: var(--line-height-heading);
  margin-bottom: var(--spacing-md);
}

.solution__description {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.solution__cta {
  text-align: center;
  margin-top: var(--spacing-3xl);
}

.solution__cta-micro {
  margin-top: var(--spacing-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

@media (min-width: 768px) {
  .solution__item {
    flex-direction: row;
    align-items: center;
    gap: var(--spacing-2xl);
  }

  .solution__item--reverse {
    flex-direction: row-reverse;
  }

  .solution__image {
    width: 50%;
    flex-shrink: 0;
  }

  .solution__img {
    border-radius: var(--radius-md);
  }

  .solution__text {
    width: 50%;
  }
}

/* ============================================
   SEC-05: Data Spec
   ============================================ */
.data-spec {
  background: var(--color-bg-light);
  padding: var(--section-gap-md) 0;
}

.data-spec__cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gutter-sp);
}

.data-spec__card {
  background: var(--color-bg-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-sm);
}

.data-spec__card-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.data-spec__card-icon {
  color: var(--color-primary);
  flex-shrink: 0;
}

.data-spec__card-title {
  font-family: var(--font-heading);
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.data-spec__card-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.data-spec__card-list li {
  position: relative;
  padding-left: var(--spacing-lg);
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
}

.data-spec__card-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 8px;
  height: 8px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
}

.data-spec__note {
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  margin-top: var(--spacing-xl);
}

@media (min-width: 768px) {
  .data-spec__cards {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--gutter-tb);
  }
}

/* ============================================
   SEC-06: Use Cases
   ============================================ */
.use-cases {
  background: var(--color-bg-white);
  padding: var(--section-gap-md) 0;
}

.use-cases__cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gutter-sp);
}

.use-case-card {
  background: var(--color-bg-white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.use-case-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
}

.use-case-card__image {
  overflow: hidden;
}

.use-case-card__img {
  width: 100%;
  height: auto;
}

.use-case-card__body {
  padding: var(--spacing-lg);
}

.use-case-card__title {
  font-family: var(--font-heading);
  font-size: var(--font-size-h4);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
}

.use-case-card__description {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
}

.use-cases__cta {
  text-align: center;
  margin-top: var(--spacing-3xl);
}

.use-cases__cta-micro {
  margin-top: var(--spacing-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

@media (min-width: 768px) {
  .use-cases__cards {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--gutter-pc);
  }
}

/* ============================================
   SEC-07: Quality
   ============================================ */
.quality {
  background: var(--color-bg-light);
  padding: var(--section-gap-md) 0;
}

.quality__items {
  display: flex;
  flex-direction: column;
  gap: var(--section-gap-sm);
}

.quality__item {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.quality__image {
  width: 100%;
}

.quality__img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}

.quality__text {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.quality__subtitle {
  font-family: var(--font-heading);
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  line-height: var(--line-height-heading);
  margin-bottom: var(--spacing-md);
}

.quality__description {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

@media (min-width: 768px) {
  .quality__item {
    flex-direction: row;
    align-items: center;
    gap: var(--spacing-2xl);
  }

  .quality__item--reverse {
    flex-direction: row-reverse;
  }

  .quality__image {
    width: 50%;
    flex-shrink: 0;
  }

  .quality__img {
    border-radius: var(--radius-md);
  }

  .quality__text {
    width: 50%;
  }
}

/* ============================================
   SEC-08: CTA Band
   ============================================ */
.cta-band {
  background: linear-gradient(135deg, #F28C1F 0%, #E8711A 100%);
  padding: var(--section-padding-cta) 0;
}

.cta-band__inner {
  text-align: center;
}

.cta-band__catch {
  font-family: var(--font-heading);
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-inverse);
  margin-bottom: var(--spacing-md);
}

.cta-band__description {
  font-size: var(--font-size-base);
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--spacing-xl);
}

.cta-band__micro {
  margin-top: var(--spacing-md);
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.85);
}

@media (min-width: 768px) {
  .cta-band__catch {
    font-size: var(--font-size-h2);
  }
}

/* ============================================
   SEC-09: Comparison
   ============================================ */
.comparison {
  background: var(--color-bg-white);
  padding: var(--section-gap-md) 0;
}

.comparison__table {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gutter-sp);
}

.comparison__card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.comparison__card--self {
  background: #FFF0F0;
  border-top: 4px solid var(--color-accent-red);
}

.comparison__card--solarepi {
  background: var(--color-primary-light);
  border-top: 4px solid var(--color-primary);
}

.comparison__card-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg);
}

.comparison__card-icon {
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
  line-height: 1;
}

.comparison__card--self .comparison__card-icon {
  color: var(--color-accent-red);
}

.comparison__card--solarepi .comparison__card-icon {
  color: var(--color-primary);
}

.comparison__card-title {
  font-family: var(--font-heading);
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.comparison__card-list {
  padding: 0 var(--spacing-lg) var(--spacing-lg);
}

.comparison__card-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.comparison__card-row:last-child {
  border-bottom: none;
}

.comparison__card-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  font-weight: var(--font-weight-medium);
}

.comparison__card-value {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  text-align: right;
}

.comparison__card-value--negative {
  color: var(--color-accent-red);
}

.comparison__card-value--positive {
  color: var(--color-primary);
}

@media (min-width: 768px) {
  .comparison__table {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--gutter-pc);
  }
}

/* ============================================
   SEC-10: FAQ
   ============================================ */
.faq {
  background: var(--color-bg-light);
  padding: var(--section-gap-md) 0;
}

.faq__list {
  max-width: 800px;
  margin: 0 auto;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  background: var(--color-bg-white);
  overflow: hidden;
}

.faq__item {
  border-bottom: 1px solid var(--color-border-light);
}

.faq__item:last-child {
  border-bottom: none;
}

.faq__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 20px var(--spacing-lg);
  text-align: left;
  min-height: 44px;
}

.faq__question {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  line-height: var(--line-height-base);
  padding-right: var(--spacing-md);
}

.faq__icon {
  position: relative;
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.faq__icon::before,
.faq__icon::after {
  content: '';
  position: absolute;
  background: var(--color-text-tertiary);
  transition: transform var(--transition-slow);
}

.faq__icon::before {
  top: 50%;
  left: 4px;
  width: 16px;
  height: 2px;
  transform: translateY(-50%);
}

.faq__icon::after {
  top: 4px;
  left: 50%;
  width: 2px;
  height: 16px;
  transform: translateX(-50%);
}

.faq__trigger[aria-expanded="true"] .faq__icon::after {
  transform: translateX(-50%) rotate(90deg);
  opacity: 0;
}

.faq__answer {
  overflow: hidden;
  transition: max-height var(--transition-slow);
}

.faq__answer[hidden] {
  display: none;
}

.faq__answer-text {
  padding: 0 var(--spacing-lg) 20px;
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
}

/* ============================================
   SEC-11: Contact
   ============================================ */
.contact {
  background: var(--color-primary-light);
  padding: var(--section-gap-lg) 0;
}

.contact__inner {
  max-width: 100%;
}

.contact__form-wrapper {
  max-width: 80%;
  margin: 0 auto;
  background: var(--color-bg-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  min-height: 400px;
}

.contact__form-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 300px;
}

.contact__form-loading {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

.contact__footer {
  text-align: center;
  margin-top: var(--spacing-xl);
}

.contact__micro {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
}

.contact__privacy {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
}

.contact__privacy-link {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.contact__privacy-link:hover {
  color: var(--color-primary-dark);
}

@media (min-width: 768px) {
  .contact__form-wrapper {
    padding: var(--spacing-2xl);
  }
}

/* ============================================
   SEC-12: Footer
   ============================================ */
.footer {
  background: var(--color-bg-dark);
  padding: var(--spacing-2xl) 0 var(--spacing-xl);
  color: rgba(255, 255, 255, 0.7);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-lg);
  text-align: center;
}

.footer__logos {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg) var(--spacing-md);
}

.footer__logo {
  opacity: 0.8;
}

.footer__info {
  text-align: center;
}

.footer__group {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.6);
}

.footer__group-stat {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.45);
  margin-top: var(--spacing-xs);
}

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

.footer__nav-link {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.6);
  transition: color var(--transition-fast);
}

.footer__nav-link:hover {
  color: var(--color-text-inverse);
}

.footer__copyright {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.4);
  margin-top: var(--spacing-md);
}

@media (min-width: 768px) {
  .footer__inner {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-xl);
  }

  .footer__nav-list {
    flex-direction: row;
    gap: var(--spacing-lg);
  }

  .footer__copyright {
    width: 100%;
    text-align: center;
  }
}

/* ============================================
   Scroll Animations
   ============================================ */
[data-animate] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Respect reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  [data-animate] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}