/* ========================================
   豊橋市内企業向け 生成AI導入研修 LP
   Clean / Business / Spacious Design
   ======================================== */

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

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

body {
  font-family: "Noto Sans JP", sans-serif;
  font-size: 16px;
  line-height: 1.8;
  color: #2d3748;
  background: #fff;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: #2b6cb0;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

ul, ol {
  list-style: none;
}

/* --- Layout --- */
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 72px 0;
}

.section--gray {
  background: #f7fafc;
}

.section--accent {
  background: #ebf4ff;
}

.section--cta {
  background: #1a365d;
  color: #fff;
}

.section--cta .section__title {
  color: #fff;
}

.section--cta .section__lead {
  color: #cbd5e0;
}

.section__title {
  font-size: 1.625rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 16px;
  color: #1a202c;
  letter-spacing: 0.02em;
}

.section__lead {
  text-align: center;
  color: #718096;
  margin-bottom: 40px;
  font-size: 0.938rem;
  line-height: 1.8;
}

.highlight {
  color: #2b6cb0;
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  padding: 14px 36px;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: background 0.2s, box-shadow 0.2s;
  text-decoration: none;
  border: 2px solid transparent;
}

.btn--primary {
  background: #2b6cb0;
  color: #fff;
  border-color: #2b6cb0;
}

.btn--primary:hover {
  background: #2c5282;
  border-color: #2c5282;
  text-decoration: none;
}

.btn--outline {
  background: transparent;
  color: #2b6cb0;
  border-color: #2b6cb0;
}

.btn--outline:hover {
  background: #2b6cb0;
  color: #fff;
  text-decoration: none;
}

.section--cta .btn--outline {
  color: #fff;
  border-color: #fff;
}

.section--cta .btn--outline:hover {
  background: #fff;
  color: #1a365d;
}

.btn--lg {
  padding: 16px 48px;
  font-size: 1.063rem;
}

/* --- HERO --- */
.hero {
  background: linear-gradient(135deg, #1a365d 0%, #2b6cb0 100%);
  color: #fff;
  padding: 64px 0 56px;
  text-align: center;
}

.hero__label {
  display: inline-block;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.3);
  padding: 6px 20px;
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 20px;
  letter-spacing: 0.08em;
}

.hero__title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1.3;
}

.hero__title-sub {
  font-weight: 500;
  font-size: 1.5rem;
}

.hero__subtitle {
  font-size: 1.063rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 36px;
  line-height: 1.7;
}

/* --- Price Block --- */
.price-block {
  background: #fff;
  color: #1a202c;
  border-radius: 12px;
  padding: 28px 24px;
  max-width: 480px;
  margin: 0 auto 32px;
  text-align: center;
}

.price-block__main {
  margin-bottom: 16px;
}

.price-block__label {
  display: block;
  font-size: 0.813rem;
  color: #718096;
  margin-bottom: 4px;
}

.price-block__amount {
  font-size: 2.5rem;
  font-weight: 700;
  color: #1a202c;
  line-height: 1.2;
}

.price-block__unit {
  font-size: 1rem;
  font-weight: 500;
}

.price-block__duration {
  font-size: 0.875rem;
  color: #718096;
}

.price-block__subsidy {
  background: #ebf4ff;
  border-radius: 8px;
  padding: 12px 16px;
  margin-bottom: 12px;
}

.price-block__subsidy-label {
  display: block;
  font-size: 0.75rem;
  color: #4a5568;
  margin-bottom: 2px;
}

.price-block__subsidy-amount {
  font-size: 1.125rem;
  color: #2b6cb0;
}

.price-block__subsidy-amount strong {
  font-size: 1.5rem;
}

.price-block__note {
  font-size: 0.688rem;
  color: #a0aec0;
  line-height: 1.6;
}

/* --- Problem Cards --- */
.problems-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.problem-card {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 24px 16px;
  text-align: center;
}

.problem-card__icon {
  color: #2b6cb0;
  margin-bottom: 12px;
}

.problem-card__text {
  font-size: 0.938rem;
  line-height: 1.6;
}

/* --- Deliverable Cards --- */
.deliverables-grid {
  display: grid;
  gap: 20px;
}

.deliverable-card {
  background: #f7fafc;
  border-left: 4px solid #2b6cb0;
  border-radius: 0 8px 8px 0;
  padding: 24px;
  position: relative;
}

.deliverable-card__number {
  font-size: 2rem;
  font-weight: 700;
  color: #bee3f8;
  position: absolute;
  top: 16px;
  right: 20px;
}

.deliverable-card__title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: #1a202c;
}

.deliverable-card__desc {
  font-size: 0.875rem;
  color: #718096;
}

/* --- Timetable --- */
.timetable {
  max-width: 640px;
  margin: 0 auto;
}

.timetable__row {
  display: flex;
  gap: 16px;
  padding: 16px;
  border-bottom: 1px solid #e2e8f0;
  align-items: flex-start;
}

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

.timetable__row--highlight {
  background: #fff;
  border-radius: 8px;
  border-bottom: none;
  margin-bottom: 2px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.timetable__row--break {
  opacity: 0.6;
}

.timetable__time {
  flex-shrink: 0;
  width: 110px;
  font-size: 0.875rem;
  font-weight: 600;
  color: #2b6cb0;
  padding-top: 2px;
}

.timetable__content strong {
  display: block;
  font-size: 0.938rem;
  margin-bottom: 4px;
}

.timetable__content p {
  font-size: 0.813rem;
  color: #718096;
}

/* --- Curriculum --- */
.curriculum-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.curriculum-item {
  background: #f7fafc;
  border-radius: 10px;
  padding: 24px;
}

.curriculum-item h3 {
  font-size: 1rem;
  font-weight: 600;
  color: #2b6cb0;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid #bee3f8;
}

.curriculum-item ul {
  list-style: none;
}

.curriculum-item li {
  font-size: 0.875rem;
  padding: 4px 0;
  padding-left: 18px;
  position: relative;
  color: #4a5568;
}

.curriculum-item li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: #2b6cb0;
}

/* --- Subsidy Section --- */
.subsidy-columns {
  display: grid;
  gap: 24px;
  margin-bottom: 32px;
}

.subsidy-col {
  background: #fff;
  border-radius: 10px;
  padding: 28px 24px;
}

.subsidy-col__title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: #1a202c;
}

.check-list {
  list-style: none;
}

.check-list li {
  padding: 6px 0;
  padding-left: 24px;
  position: relative;
  font-size: 0.938rem;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: #38a169;
  font-weight: 700;
}

.step-list {
  counter-reset: step;
  list-style: none;
}

.step-list li {
  padding: 10px 0;
  padding-left: 36px;
  position: relative;
  font-size: 0.938rem;
  counter-increment: step;
}

.step-list li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 8px;
  width: 24px;
  height: 24px;
  background: #2b6cb0;
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.subsidy-col__download {
  margin-top: 16px;
  font-size: 0.875rem;
}

.subsidy-col__note {
  margin-top: 12px;
  font-size: 0.875rem;
  color: #718096;
}

.link {
  color: #2b6cb0;
  font-weight: 500;
}

.caution-box {
  background: #fffaf0;
  border: 1px solid #fbd38d;
  border-radius: 8px;
  padding: 20px 24px;
}

.caution-box h4 {
  font-size: 0.875rem;
  font-weight: 600;
  color: #c05621;
  margin-bottom: 8px;
}

.caution-box ul {
  list-style: none;
}

.caution-box li {
  font-size: 0.813rem;
  color: #744210;
  padding: 3px 0;
  padding-left: 16px;
  position: relative;
}

.caution-box li::before {
  content: "※";
  position: absolute;
  left: 0;
}

/* --- Pricing --- */
.pricing-grid {
  display: grid;
  gap: 20px;
}

.pricing-card {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 32px 24px;
  text-align: center;
  position: relative;
}

.pricing-card--recommended {
  border-color: #2b6cb0;
  box-shadow: 0 4px 16px rgba(43, 108, 176, 0.12);
}

.pricing-card__badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: #2b6cb0;
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 16px;
  border-radius: 100px;
}

.pricing-card__title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: #1a202c;
}

.pricing-card__price {
  margin-bottom: 8px;
}

.pricing-card__price strong {
  font-size: 2.25rem;
  color: #1a202c;
}

.pricing-card__yen {
  font-size: 0.875rem;
  color: #718096;
}

.pricing-card__subsidy {
  font-size: 0.813rem;
  color: #2b6cb0;
  margin-bottom: 20px;
  padding: 8px;
  background: #ebf4ff;
  border-radius: 6px;
}

.pricing-card__features {
  list-style: none;
  text-align: left;
  margin-bottom: 24px;
}

.pricing-card__features li {
  font-size: 0.875rem;
  padding: 6px 0;
  padding-left: 20px;
  position: relative;
  color: #4a5568;
}

.pricing-card__features li::before {
  content: "•";
  position: absolute;
  left: 4px;
  color: #2b6cb0;
}

.pricing-expand {
  margin-top: 24px;
  text-align: center;
}

.pricing-expand summary {
  font-size: 0.875rem;
  color: #718096;
  cursor: pointer;
  padding: 12px;
}

.pricing-expand summary:hover {
  color: #2b6cb0;
}

.pricing-expand__content {
  margin-top: 20px;
}

/* --- FAQ --- */
.faq-list {
  max-width: 640px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid #e2e8f0;
}

.faq-item__q {
  padding: 18px 0;
  font-size: 0.938rem;
  font-weight: 600;
  cursor: pointer;
  color: #1a202c;
  list-style: none;
  position: relative;
  padding-right: 28px;
}

.faq-item__q::-webkit-details-marker {
  display: none;
}

.faq-item__q::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 18px;
  font-size: 1.25rem;
  color: #a0aec0;
  font-weight: 400;
  transition: transform 0.2s;
}

.faq-item[open] .faq-item__q::after {
  content: "−";
}

.faq-item__a {
  padding: 0 0 18px;
  font-size: 0.875rem;
  color: #718096;
  line-height: 1.8;
}

/* --- Contact Form --- */
.contact-form {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 12px;
  padding: 32px 24px;
  max-width: 560px;
  margin: 0 auto 32px;
}

.contact-form__row {
  display: grid;
  gap: 16px;
  margin-bottom: 16px;
}

.contact-form__field {
  margin-bottom: 0;
}

.contact-form__field--full {
  margin-bottom: 16px;
}

.contact-form label {
  display: block;
  font-size: 0.813rem;
  font-weight: 500;
  margin-bottom: 4px;
  color: rgba(255, 255, 255, 0.8);
}

.required {
  color: #fc8181;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  font-size: 0.938rem;
  font-family: inherit;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: rgba(255, 255, 255, 0.35);
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: #63b3ed;
  background: rgba(255, 255, 255, 0.1);
}

.contact-form .btn {
  width: 100%;
  margin-top: 8px;
}

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

.contact-alt p {
  font-size: 0.813rem;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 12px;
}

.contact-alt__links {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.contact-alt .btn {
  padding: 10px 24px;
  font-size: 0.875rem;
}

/* --- Footer --- */
.footer {
  background: #1a202c;
  color: #a0aec0;
  text-align: center;
  padding: 28px 0;
}

.footer__company {
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 4px;
}

.footer__copy {
  font-size: 0.75rem;
}

/* ========================================
   Responsive — Desktop (640px+)
   ======================================== */
@media (min-width: 640px) {
  .hero {
    padding: 80px 0 72px;
  }

  .hero__title {
    font-size: 2.5rem;
  }

  .section__title {
    font-size: 1.875rem;
  }

  .problems-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }

  .deliverables-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .curriculum-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact-form__row {
    grid-template-columns: 1fr 1fr;
  }

  .contact-form {
    padding: 40px 36px;
  }
}

@media (min-width: 960px) {
  .section {
    padding: 96px 0;
  }

  .hero {
    padding: 100px 0 88px;
  }

  .hero__title {
    font-size: 2.75rem;
  }
}