/* =========================================
   Client LP Styles
   Target: 地方中小企業の経営者向け
   Design: ビジネス・シンプル・信頼感
   ========================================= */

/* -----------------------------------------
   CSS Variables
   ----------------------------------------- */
:root {
  /* Colors */
  --color-primary: #2563EB;
  --color-primary-light: #3B82F6;
  --color-primary-dark: #1D4ED8;
  --color-accent: #F59E0B;
  --color-accent-light: #FBBF24;
  --color-accent-dark: #D97706;

  --color-bg: #f8fafc;
  --color-bg-white: #ffffff;
  --color-bg-gray: #f1f5f9;

  --color-text-primary: #1e293b;
  --color-text-secondary: #64748b;
  --color-text-muted: #94a3b8;

  --color-border: #e2e8f0;
  --color-border-light: #f1f5f9;

  /* Typography */
  --font-jp: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'メイリオ', sans-serif;
  --font-en: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Spacing */
  --section-spacing: 120px;
  --element-spacing: 48px;
  --card-padding: 32px;

  /* Layout */
  --max-width: 1200px;
  --container-padding: 24px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-jp);
  background: var(--color-bg);
  color: var(--color-text-primary);
  line-height: 1.8;
  -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;
}

/* -----------------------------------------
   Typography
   ----------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.4;
}

h1 {
  font-size: 3rem;
}

h2 {
  font-size: 2.25rem;
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

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

.text-primary {
  color: var(--color-primary);
}

.text-accent {
  color: var(--color-accent);
}

.text-muted {
  color: var(--color-text-secondary);
}

/* -----------------------------------------
   Layout
   ----------------------------------------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section {
  padding: var(--section-spacing) 0;
}

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

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

.section--primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
}

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

.section__title {
  margin-bottom: 16px;
}

.section__subtitle {
  color: var(--color-text-secondary);
  font-size: 1.125rem;
}

/* -----------------------------------------
   Header
   ----------------------------------------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition-base);
}

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

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.header__logo {
  font-family: var(--font-en);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
}

.header__nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.header__nav-link {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color var(--transition-fast);
}

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

.header__cta {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* -----------------------------------------
   Buttons
   ----------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  font-family: var(--font-jp);
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn--primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.4);
}

.btn--primary:hover {
  background: var(--color-accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(245, 158, 11, 0.5);
}

.btn--secondary {
  background: var(--color-bg-white);
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn--secondary:hover {
  background: var(--color-primary);
  color: #fff;
}

.btn--outline {
  background: transparent;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.btn--outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn--large {
  padding: 18px 48px;
  font-size: 1.125rem;
}

.btn--white {
  background: #fff;
  color: var(--color-primary);
}

.btn--white:hover {
  background: #f1f5f9;
}

/* -----------------------------------------
   Hero Section
   ----------------------------------------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(180deg, #fff 0%, var(--color-bg) 100%);
  padding-top: 72px;
  position: relative;
  overflow: hidden;
}

.hero__bg-pattern {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    radial-gradient(circle at 20% 80%, rgba(37, 99, 235, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(245, 158, 11, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.hero__content {
  text-align: center;
  max-width: 800px;
  padding: 0 var(--container-padding);
  position: relative;
  z-index: 1;
}

.hero__title {
  font-size: 3.5rem;
  margin-bottom: 24px;
  line-height: 1.3;
}

.hero__title-highlight {
  color: var(--color-primary);
}

.hero__subtitle {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  margin-bottom: 40px;
}

.hero__cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero__scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--color-text-muted);
  font-size: 0.875rem;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  40% {
    transform: translateX(-50%) translateY(-10px);
  }
  60% {
    transform: translateX(-50%) translateY(-5px);
  }
}

/* -----------------------------------------
   Pain Points Section
   ----------------------------------------- */
.pain-points__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.pain-card {
  background: var(--color-bg-white);
  border-radius: var(--radius-lg);
  padding: var(--card-padding);
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.pain-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.pain-card__icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(37, 99, 235, 0.1);
  border-radius: 50%;
  color: var(--color-primary);
  font-size: 2rem;
}

.pain-card__title {
  margin-bottom: 12px;
  color: var(--color-text-primary);
}

.pain-card__text {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

/* -----------------------------------------
   Solution Section (4 Strengths)
   ----------------------------------------- */
.solution__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.solution-card {
  background: var(--color-bg-white);
  border-radius: var(--radius-lg);
  padding: var(--card-padding);
  display: flex;
  gap: 24px;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.solution-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.solution-card__icon {
  flex-shrink: 0;
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border-radius: var(--radius-md);
  color: #fff;
  font-size: 1.5rem;
}

.solution-card__content {
  flex: 1;
}

.solution-card__number {
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.solution-card__title {
  margin-bottom: 8px;
}

.solution-card__text {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  margin-bottom: 12px;
}

.solution-card__highlight {
  display: inline-block;
  background: rgba(245, 158, 11, 0.1);
  color: var(--color-accent-dark);
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
}

/* -----------------------------------------
   How It Works Section
   ----------------------------------------- */
.steps {
  display: flex;
  justify-content: center;
  gap: 24px;
  position: relative;
}

.steps::before {
  content: '';
  position: absolute;
  top: 48px;
  left: 20%;
  right: 20%;
  height: 2px;
  background: var(--color-border);
  z-index: 0;
}

.step {
  flex: 1;
  max-width: 300px;
  text-align: center;
  position: relative;
  z-index: 1;
}

.step__number {
  width: 96px;
  height: 96px;
  margin: 0 auto 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-white);
  border: 3px solid var(--color-primary);
  border-radius: 50%;
  font-family: var(--font-en);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
}

.step__title {
  margin-bottom: 8px;
}

.step__text {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

/* -----------------------------------------
   Skill Visualization Section
   ----------------------------------------- */
.skill-viz {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.skill-viz__content h2 {
  margin-bottom: 24px;
}

.skill-viz__text {
  color: var(--color-text-secondary);
  margin-bottom: 32px;
}

.skill-viz__list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.skill-viz__item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--color-bg-gray);
  border-radius: var(--radius-md);
}

.skill-viz__item-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  font-size: 0.875rem;
}

.skill-viz__item-text {
  font-weight: 500;
  font-size: 0.9375rem;
}

.skill-viz__chart {
  background: var(--color-bg-white);
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: var(--shadow-lg);
}

.radar-chart {
  width: 100%;
  max-width: 400px;
  margin: 0 auto;
}

/* -----------------------------------------
   Social Proof Section
   ----------------------------------------- */
.testimonials__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.testimonial-card {
  background: var(--color-bg-white);
  border-radius: var(--radius-lg);
  padding: var(--card-padding);
  box-shadow: var(--shadow-md);
}

.testimonial-card__header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
}

.testimonial-card__avatar {
  width: 56px;
  height: 56px;
  background: var(--color-bg-gray);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.testimonial-card__info {
  flex: 1;
}

.testimonial-card__company {
  font-weight: 700;
  margin-bottom: 4px;
}

.testimonial-card__meta {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.testimonial-card__challenge {
  margin-bottom: 16px;
}

.testimonial-card__label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.testimonial-card__text {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

.testimonial-card__result {
  background: rgba(16, 185, 129, 0.1);
  padding: 16px;
  border-radius: var(--radius-md);
}

.testimonial-card__result .testimonial-card__label {
  color: #059669;
}

.testimonial-card__quote {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
  font-style: italic;
  color: var(--color-text-secondary);
}

/* -----------------------------------------
   FAQ Section
   ----------------------------------------- */
.faq__list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--color-bg-white);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.faq-item__question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  background: none;
  border: none;
  font-family: var(--font-jp);
  font-size: 1rem;
  font-weight: 700;
  text-align: left;
  cursor: pointer;
  transition: background var(--transition-fast);
}

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

.faq-item__icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  transition: transform var(--transition-base);
}

.faq-item.is-open .faq-item__icon {
  transform: rotate(180deg);
}

.faq-item__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}

.faq-item.is-open .faq-item__answer {
  max-height: 500px;
}

.faq-item__answer-inner {
  padding: 0 24px 24px;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* -----------------------------------------
   CTA Section
   ----------------------------------------- */
.cta {
  text-align: center;
  padding: 100px 0;
}

.cta__title {
  color: #fff;
  margin-bottom: 16px;
}

.cta__text {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 40px;
  font-size: 1.125rem;
}

.cta__note {
  margin-top: 24px;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.7);
}

/* -----------------------------------------
   Footer
   ----------------------------------------- */
.footer {
  background: var(--color-text-primary);
  color: rgba(255, 255, 255, 0.7);
  padding: 64px 0 32px;
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 48px;
}

.footer__brand {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}

.footer__nav {
  display: flex;
  gap: 48px;
}

.footer__nav-title {
  color: #fff;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer__nav-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer__nav-link {
  font-size: 0.875rem;
  transition: color var(--transition-fast);
}

.footer__nav-link:hover {
  color: #fff;
}

.footer__bottom {
  text-align: center;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.875rem;
}

/* -----------------------------------------
   Responsive
   ----------------------------------------- */
@media (max-width: 1200px) {
  :root {
    --section-spacing: 100px;
  }
}

@media (max-width: 960px) {
  :root {
    --section-spacing: 80px;
    --element-spacing: 40px;
  }

  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 2rem;
  }

  .hero__title {
    font-size: 2.75rem;
  }

  .pain-points__grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
  }

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

  .skill-viz {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .skill-viz__chart {
    order: -1;
  }

  .testimonials__grid {
    grid-template-columns: 1fr;
    max-width: 600px;
    margin: 0 auto;
  }

  .footer__inner {
    flex-direction: column;
    gap: 40px;
  }

  .footer__nav {
    flex-wrap: wrap;
    gap: 32px;
  }
}

@media (max-width: 720px) {
  :root {
    --section-spacing: 64px;
    --element-spacing: 32px;
    --card-padding: 24px;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.75rem;
  }

  .header__nav {
    display: none;
  }

  .sp-only {
    display: inline;
  }

  .hero__title {
    font-size: 2.25rem;
  }

  .hero__subtitle {
    font-size: 1rem;
  }

  .hero__cta {
    flex-direction: column;
    align-items: center;
  }

  .btn--large {
    width: 100%;
    max-width: 300px;
  }

  .steps {
    flex-direction: column;
    gap: 40px;
  }

  .steps::before {
    display: none;
  }

  .skill-viz__list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  :root {
    --container-padding: 16px;
  }

  h1 {
    font-size: 1.75rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  .hero__title {
    font-size: 1.875rem;
  }

  .solution-card {
    flex-direction: column;
    text-align: center;
  }

  .solution-card__icon {
    margin: 0 auto;
  }
}

/* -----------------------------------------
   Animations
   ----------------------------------------- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-delay-1 {
  transition-delay: 0.1s;
}

.fade-in-delay-2 {
  transition-delay: 0.2s;
}

.fade-in-delay-3 {
  transition-delay: 0.3s;
}

.fade-in-delay-4 {
  transition-delay: 0.4s;
}

/* -----------------------------------------
   Utilities
   ----------------------------------------- */
.sp-only {
  display: none;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}