/* ===== CSS Custom Properties ===== */
:root {
  --color-primary: #1a56db;
  --color-primary-dark: #1244b0;
  --color-primary-light: #e8effc;
  --color-accent: #f97316;
  --color-accent-dark: #ea580c;
  --color-white: #ffffff;
  --color-bg: #ffffff;
  --color-bg-alt: #f8fafc;
  --color-bg-dark: #f1f5f9;
  --color-text: #1e293b;
  --color-text-sub: #64748b;
  --color-text-light: #94a3b8;
  --color-footer-bg: #0f172a;
  --color-error: #dc2626;
  --color-success: #16a34a;
  --color-border: #e2e8f0;
  --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
  --max-width: 1100px;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.07);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.1);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-stack);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; height: auto; }
a { color: var(--color-primary); text-decoration: none; }

/* ===== Container ===== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Section Common ===== */
.section-label {
  text-align: center;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--color-primary);
  margin-bottom: 8px;
  text-transform: uppercase;
}
.section-title {
  font-size: 24px;
  font-weight: 800;
  text-align: center;
  margin-bottom: 48px;
  line-height: 1.4;
  letter-spacing: -0.01em;
}
.section-title--light { color: var(--color-white); }

/* ===== Fade-in Animation ===== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--transition), transform 0.6s var(--transition);
}
.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Button ===== */
.btn {
  display: inline-block;
  padding: 16px 36px;
  font-size: 16px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  text-align: center;
  transition: all var(--transition);
  text-decoration: none;
  line-height: 1.4;
}
.btn--cta {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
  color: var(--color-white);
  box-shadow: 0 4px 14px rgba(249, 115, 22, 0.35);
}
.btn--cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(249, 115, 22, 0.45);
}
.btn--cta:active { transform: translateY(0); }
.btn--large { padding: 20px 48px; font-size: 18px; }
.btn--full { width: 100%; }
.btn--pulse {
  animation: pulse 2.5s infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 4px 14px rgba(249, 115, 22, 0.35); }
  50% { box-shadow: 0 4px 24px rgba(249, 115, 22, 0.55); }
}
.hide-sp { display: none; }

/* ===== 1. Hero ===== */
.hero {
  position: relative;
  background: linear-gradient(135deg, #1e3a8a 0%, #1a56db 50%, #3b82f6 100%);
  color: var(--color-white);
  padding: 64px 0 56px;
  text-align: center;
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(59,130,246,0.3) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(147,197,253,0.15) 0%, transparent 50%);
  pointer-events: none;
}
.hero .container { position: relative; z-index: 1; }
.hero__badge {
  display: inline-block;
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 100px;
  padding: 6px 20px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 24px;
}
.hero__title {
  font-size: 28px;
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.hero__highlight {
  background: linear-gradient(transparent 60%, rgba(249,115,22,0.4) 60%);
  padding: 0 4px;
}
.hero__subtitle {
  font-size: 15px;
  opacity: 0.85;
  margin-bottom: 32px;
  line-height: 1.7;
}
.hero__stats {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}
.hero__stat { text-align: center; }
.hero__stat-number {
  display: block;
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.hero__stat-label {
  display: block;
  font-size: 12px;
  opacity: 0.7;
  margin-top: 4px;
}
.hero__stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.25);
}
.hero .btn { margin-bottom: 12px; }
.hero__note {
  font-size: 13px;
  opacity: 0.65;
}

/* ===== 2. Pain Points ===== */
.pain {
  padding: 80px 0;
  background: var(--color-bg-alt);
}
.pain__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.pain__card {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 32px 28px;
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}
.pain__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.pain__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: var(--color-primary-light);
  border-radius: 14px;
  color: var(--color-primary);
  margin-bottom: 20px;
}
.pain__title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.5;
}
.pain__text {
  font-size: 15px;
  color: var(--color-text-sub);
  line-height: 1.8;
}

/* ===== 3. Service / Steps ===== */
.service {
  padding: 80px 0;
  text-align: center;
}
.steps {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  margin-bottom: 40px;
}
.step {
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  width: 100%;
  max-width: 360px;
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}
.step:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.step__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--color-primary) 0%, #3b82f6 100%);
  color: var(--color-white);
  border-radius: 50%;
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 16px;
}
.step__title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}
.step__text {
  font-size: 14px;
  color: var(--color-text-sub);
  margin-bottom: 12px;
  line-height: 1.7;
}
.step__tag {
  display: inline-block;
  font-size: 13px;
  color: var(--color-primary);
  font-weight: 700;
  background: var(--color-primary-light);
  padding: 4px 12px;
  border-radius: 100px;
}
.step__connector {
  color: var(--color-primary);
  transform: rotate(90deg);
  opacity: 0.5;
}
.service > .container > .btn { margin-bottom: 56px; }

/* Pricing */
.pricing { margin-top: 16px; }
.pricing__heading {
  font-size: 22px;
  font-weight: 800;
  text-align: center;
  margin-bottom: 28px;
}
.pricing__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 16px;
}
.pricing__card {
  position: relative;
  background: var(--color-white);
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: all var(--transition);
}
.pricing__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.pricing__card--recommended {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
  transform: scale(1.02);
}
.pricing__card--recommended:hover {
  transform: scale(1.02) translateY(-4px);
}
.pricing__badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--color-primary) 0%, #3b82f6 100%);
  color: var(--color-white);
  font-size: 12px;
  font-weight: 700;
  padding: 5px 20px;
  border-radius: 100px;
  white-space: nowrap;
}
.pricing__plan {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text-sub);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.pricing__price {
  font-size: 16px;
  margin-bottom: 16px;
  color: var(--color-text-sub);
}
.pricing__price strong {
  font-size: 32px;
  color: var(--color-text);
  letter-spacing: -0.02em;
}
.pricing__from {
  font-size: 14px;
  color: var(--color-text-sub);
}
.pricing__desc {
  font-size: 14px;
  color: var(--color-text-sub);
  margin-bottom: 12px;
  line-height: 1.6;
}
.pricing__target {
  font-size: 13px;
  color: var(--color-primary);
  font-weight: 700;
}
.pricing__footer {
  text-align: center;
  font-size: 14px;
  color: var(--color-text-sub);
  margin-top: 20px;
}

/* ===== 4. Credibility ===== */
.credibility {
  padding: 80px 0;
  background: var(--color-bg-alt);
}
.credibility__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 32px;
}
.credibility__card {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 32px 28px;
  text-align: center;
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}
.credibility__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.credibility__number {
  font-size: 36px;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 2px;
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.credibility__number-sub {
  font-size: 13px;
  color: var(--color-text-sub);
  margin-bottom: 16px;
}
.credibility__title {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
}
.credibility__text {
  font-size: 14px;
  color: var(--color-text-sub);
  line-height: 1.8;
}
.credibility__footer {
  text-align: center;
  font-size: 15px;
  color: var(--color-text-sub);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ===== 5. Industry Examples (Tabs) ===== */
.examples {
  padding: 80px 0;
}
.tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 28px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.tab {
  flex: 1;
  min-width: 0;
  padding: 12px 8px;
  font-size: 14px;
  font-weight: 700;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  background: var(--color-white);
  color: var(--color-text-sub);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}
.tab:hover { background: var(--color-bg-alt); }
.tab--active {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}
.tab-panel { display: none; }
.tab-panel--active { display: block; }
.example__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: 24px;
}
.example__card {
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--color-white);
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}
.example__card:hover {
  box-shadow: var(--shadow-md);
}
.example__before-wrap, .example__after-wrap {
  flex: 1;
  padding: 16px 20px;
}
.example__before-wrap {
  background: var(--color-bg-dark);
}
.example__after-wrap {
  background: var(--color-primary-light);
}
.example__label {
  display: block;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-light);
  margin-bottom: 4px;
}
.example__label--after {
  color: var(--color-primary);
}
.example__before {
  font-size: 14px;
  color: var(--color-text-sub);
}
.example__after {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-primary);
}
.example__arrow-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  flex-shrink: 0;
  background: var(--color-primary);
}
.example__arrow-icon {
  display: block;
  width: 0;
  height: 0;
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  border-left: 8px solid var(--color-white);
}
.example__savings {
  text-align: center;
  font-size: 16px;
  color: var(--color-text);
  padding: 16px;
  background: var(--color-bg-alt);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}
.example__savings strong {
  font-size: 28px;
  color: var(--color-accent);
  letter-spacing: -0.02em;
}

/* ===== 6. CTA Form ===== */
.form-section {
  padding: 80px 0;
  background: linear-gradient(135deg, #1e3a8a 0%, #1a56db 100%);
}
.form-section__subtitle {
  text-align: center;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 36px;
  font-size: 15px;
}
.form-card {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 36px 28px;
  box-shadow: var(--shadow-lg);
  max-width: 640px;
  margin: 0 auto;
}
.form-row {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.form-group {
  margin-bottom: 20px;
}
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--color-text);
}
.required { color: var(--color-error); }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  min-height: 48px;
  padding: 12px 14px;
  font-size: 16px;
  font-family: var(--font-stack);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  appearance: none;
  -webkit-appearance: none;
  background: var(--color-white);
}
.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2364748b' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}
.form-group textarea { min-height: 100px; resize: vertical; }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.1);
}
.form-group input.invalid,
.form-group select.invalid {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}
.form-group input.valid {
  border-color: var(--color-success);
}
.form-error {
  font-size: 13px;
  color: var(--color-error);
  margin-top: 4px;
  min-height: 18px;
}
.form-card .btn {
  margin-top: 8px;
}
.form-notes {
  margin-top: 16px;
  text-align: center;
}
.form-notes p {
  font-size: 13px;
  color: var(--color-text-sub);
  line-height: 1.6;
}

/* Thanks Message */
.thanks-message {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
  color: var(--color-white);
  padding: 40px 24px;
}
.thanks-message__icon {
  color: #4ade80;
  margin-bottom: 20px;
}
.thanks-message h3 {
  font-size: 24px;
  margin-bottom: 16px;
}
.thanks-message p {
  font-size: 15px;
  opacity: 0.9;
  line-height: 1.7;
}
.thanks-message__company {
  margin-top: 24px;
  font-weight: 700;
  opacity: 1 !important;
}

/* ===== 7. FAQ ===== */
.faq {
  padding: 80px 0;
  background: var(--color-bg-alt);
}
.faq__list { max-width: 720px; margin: 0 auto; }
.faq__item {
  background: var(--color-white);
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: all var(--transition);
}
.faq__item:hover {
  box-shadow: var(--shadow);
}
.faq__item[open] {
  box-shadow: var(--shadow-md);
}
.faq__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
  line-height: 1.5;
  transition: color var(--transition);
}
.faq__question::-webkit-details-marker { display: none; }
.faq__question::after {
  content: "+";
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  font-size: 18px;
  font-weight: 400;
  color: var(--color-primary);
  background: var(--color-primary-light);
  border-radius: 50%;
  flex-shrink: 0;
  margin-left: 16px;
  transition: all var(--transition);
}
.faq__item[open] .faq__question::after {
  content: "-";
  background: var(--color-primary);
  color: var(--color-white);
}
.faq__answer {
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--color-text-sub);
  line-height: 1.9;
}

/* ===== 8. Footer ===== */
.footer {
  background: var(--color-footer-bg);
  color: rgba(255, 255, 255, 0.7);
  padding: 48px 0 28px;
  text-align: center;
  font-size: 14px;
}
.footer__company {
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 8px;
  font-size: 15px;
}
.footer__email { margin-bottom: 20px; }
.footer__email a { color: rgba(255, 255, 255, 0.7); transition: color var(--transition); }
.footer__email a:hover { color: var(--color-white); }
.footer__links {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.footer__links a {
  color: rgba(255, 255, 255, 0.5);
  font-size: 13px;
  transition: color var(--transition);
}
.footer__links a:hover { color: var(--color-white); }
.footer__copy {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.35);
}

/* ===== Sticky CTA (Mobile) ===== */
.sticky-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(8px);
  box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.1);
  z-index: 100;
}
.sticky-cta .btn { font-size: 15px; padding: 14px; }

/* ===== Responsive: Tablet (768px+) ===== */
@media (min-width: 768px) {
  .hide-sp { display: inline; }
  .section-title { font-size: 32px; margin-bottom: 56px; }
  .hero { padding: 100px 0 80px; }
  .hero__title { font-size: 40px; }
  .hero__subtitle { font-size: 17px; }
  .hero__stats { gap: 40px; }
  .hero__stat-number { font-size: 40px; }

  .pain__grid { grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .credibility__grid { grid-template-columns: repeat(3, 1fr); gap: 20px; }

  .steps {
    flex-direction: row;
    justify-content: center;
    gap: 8px;
  }
  .step { max-width: 280px; }
  .step__connector { transform: none; }

  .pricing__grid { grid-template-columns: repeat(3, 1fr); gap: 20px; }

  .tab { font-size: 15px; padding: 14px 16px; }
  .example__grid { grid-template-columns: repeat(3, 1fr); gap: 16px; }
  .example__card { flex-direction: column; }
  .example__before-wrap, .example__after-wrap { width: 100%; }
  .example__arrow-wrap { width: 100%; height: 32px; }
  .example__arrow-icon {
    border-top: none;
    border-bottom: none;
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-top: 8px solid var(--color-white);
  }

  .form-card { padding: 44px 40px; }
  .form-row {
    flex-direction: row;
    gap: 16px;
  }
  .form-row .form-group { flex: 1; }
}

/* ===== Responsive: Desktop (1024px+) ===== */
@media (min-width: 1024px) {
  .section-title { font-size: 36px; }
  .hero { padding: 120px 0 100px; }
  .hero__title { font-size: 48px; }
  .hero__subtitle { font-size: 18px; }
  .hero__stat-number { font-size: 48px; }

  .container { padding: 0 40px; }

  .pain, .service, .credibility, .examples, .form-section, .faq {
    padding: 100px 0;
  }
}

/* ===== Mobile sticky CTA visibility ===== */
@media (max-width: 767px) {
  .sticky-cta.visible { display: block; }
  body { padding-bottom: 72px; }
}