@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;600;700;800;900&display=swap');

:root {
  --primary: #3DAA8A;
  --primary-dark: #2D7A6A;
  --primary-light: #E8F5F0;
  --accent: #F5C842;
  --accent-dark: #D4A930;
  --danger: #DC3545;
  --success: #28A745;
  --dark: #1A2E28;
  --gray-900: #1A1A1A;
  --gray-700: #495057;
  --gray-500: #6C757D;
  --gray-300: #DEE2E6;
  --gray-100: #F8F9FA;
  --white: #FFFFFF;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.12);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.16);
  --radius: 12px;
  --radius-lg: 20px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: 'Noto Sans JP', sans-serif;
  color: var(--gray-900);
  line-height: 1.8;
  overflow-x: hidden;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

.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(--gray-300);
  transition: box-shadow 0.3s;
}

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

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  text-decoration: none;
  display: flex;
  align-items: center;
}

.logo-img {
  height: 36px;
  width: auto;
}

.header-cta-short {
  display: none;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: var(--gray-900);
  padding: 10px 24px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.9rem;
  transition: background 0.3s, transform 0.2s;
}

.header-cta:hover {
  background: var(--accent-dark);
  transform: translateY(-1px);
}

.hero {
  padding: 80px 40px;
  background: linear-gradient(135deg, #2D7A6A 0%, #3DAA8A 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(245,200,66,0.12) 0%, transparent 70%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 40px;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.hero-badges {
  display: flex;
  gap: 10px;
  margin-bottom: 24px;
  flex-wrap: wrap;
  justify-content: center;
}

.hero-badge-tag {
  background: transparent;
  color: #ffffff;
  padding: 4px 12px;
  border: 1.5px solid rgba(255,255,255,0.6);
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.05em;
}

.hero h1 {
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 900;
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
  text-align: center;
}

.hero h1 .highlight {
  color: var(--accent);
  position: relative;
}

.hero-sub {
  font-size: 1rem;
  opacity: 0.9;
  margin-bottom: 32px;
  line-height: 1.7;
  text-align: center;
}

.hero-images-row {
  display: flex;
  align-items: center;
  gap: 40px;
  margin-bottom: 40px;
  justify-content: center;
}

.hero-graph img {
  max-width: 100%;
  width: auto;
  max-height: 300px;
  object-fit: contain;
  border-radius: 0;
}

.hero-mockup img {
  max-width: 100%;
  width: auto;
  max-height: 240px;
  object-fit: contain;
  border-radius: 0;
  filter: drop-shadow(0 16px 40px rgba(0, 0, 0, 0.25));
}

.hero-tags {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: transparent;
  border: none;
  padding: 0;
  border-radius: 4px;
  font-size: 16px;
  font-weight: 400;
  color: rgba(255,255,255,0.7);
}

.hero-tag::before {
  content: "✓";
  color: #F5C842;
  font-weight: 700;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: var(--gray-900);
  padding: 16px 40px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1rem;
  transition: all 0.3s;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(245,200,66,0.4);
}

.btn-primary:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(245,200,66,0.5);
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.problems {
  padding: 120px 0;
  background: var(--primary-light);
}

.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--primary);
  background: rgba(61,170,138,0.12);
  padding: 6px 16px;
  border-radius: 50px;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
  text-transform: uppercase;
}

.section-title {
  font-size: 2rem;
  font-weight: 900;
  color: var(--gray-900);
  margin-bottom: 12px;
  line-height: 1.4;
  text-align: center;
}

.section-title .accent {
  color: var(--danger);
}

.section-desc {
  font-size: 1rem;
  color: var(--gray-500);
  text-align: center;
  margin-bottom: 48px;
}

.problem-header {
  display: flex;
  align-items: center;
  gap: 40px;
  margin-bottom: 0;
}

.problem-header-text {
  flex: 1;
}

.problem-header-text .section-title {
  text-align: left;
}

.problem-header-text .section-desc {
  text-align: left;
  margin-bottom: 0;
}

.problem-header-image {
  flex-shrink: 0;
}

.problem-header-image img {
  max-width: 224px;
  height: auto;
}

.problems-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 60px;
}

.problem-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  border: 2px solid var(--primary);
}


.problem-icon {
  width: 64px;
  height: 64px;
  background: var(--primary-light);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.problem-icon img {
  width: 36px;
  height: 36px;
}

.problem-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--gray-900);
}

.problem-card p {
  font-size: 0.9rem;
  color: var(--gray-500);
  line-height: 1.6;
}

.problem-solution {
  display: inline-block;
  background: var(--primary);
  color: var(--white);
  padding: 4px 16px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 700;
  margin-top: 12px;
}

.excel-problems {
  background: var(--white);
  border: 2px solid var(--accent);
  border-radius: var(--radius-lg);
  padding: 48px;
}

.excel-problems-inner {
  display: flex;
  align-items: center;
  gap: 40px;
}

.excel-problems-content {
  flex: 1;
  text-align: left;
}

.excel-problems-image {
  flex-shrink: 0;
}

.excel-problems-image img {
  width: 240px;
  height: auto;
}

.excel-problems h3 {
  font-size: 1.5rem;
  font-weight: 900;
  margin-bottom: 32px;
  color: var(--gray-900);
}

.excel-problems h3 .highlight {
  color: var(--primary);
}

.excel-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  max-width: 700px;
  margin: 0 auto;
  list-style: none;
}

.excel-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--primary-light);
  padding: 14px 20px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 500;
  text-align: left;
}

.excel-list li::before {
  content: '\00d7';
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  min-width: 28px;
  background: var(--danger);
  color: var(--white);
  border-radius: 50%;
  font-weight: 800;
  font-size: 0.85rem;
}

.features {
  padding: 120px 0;
  background: var(--white);
}

.features .feature-item:nth-child(even) {
  background: transparent;
}

.feature-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 80px;
}

.feature-item:last-child {
  margin-bottom: 0;
}

.feature-item.reverse {
  direction: rtl;
}

.feature-item.reverse > * {
  direction: ltr;
}

.feature-number {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
  letter-spacing: 0.1em;
}

.feature-item h3 {
  font-size: 1.6rem;
  font-weight: 900;
  margin-bottom: 16px;
  color: var(--gray-900);
  line-height: 1.4;
}

.feature-item p {
  font-size: 0.95rem;
  color: var(--gray-700);
  line-height: 1.8;
  margin-bottom: 20px;
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.feature-tag {
  background: var(--primary);
  color: var(--white);
  padding: 6px 14px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
}

.feature-visual {
  background: var(--primary-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(61,170,138,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 280px;
  overflow: hidden;
}

.feature-visual img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
}

.testimonials {
  padding: 120px 0;
  background: var(--primary-light);
}

.voice-heading {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.voice-heading-image {
  position: absolute;
  left: 100px;
  top: 50%;
  transform: translateY(-50%);
  height: 240px;
  width: auto;
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.testimonial-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 36px;
  border: 1px solid rgba(61,170,138,0.2);
}

.testimonial-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.testimonial-avatar {
  width: 52px;
  height: 52px;
  background: var(--primary);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
}

.testimonial-info h4 {
  font-size: 1rem;
  font-weight: 700;
}

.testimonial-info span {
  font-size: 0.85rem;
  color: var(--gray-500);
}

.testimonial-card p {
  font-size: 0.95rem;
  color: var(--gray-700);
  line-height: 1.8;
}

.testimonial-benefit {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  padding: 6px 14px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 700;
  margin-top: 16px;
}

.cta-section {
  padding: 120px 0;
  background: linear-gradient(135deg, #2D7A6A 0%, #3DAA8A 100%);
  color: var(--white);
  text-align: center;
}

.cta-section h2 {
  font-size: 2.2rem;
  font-weight: 900;
  margin-bottom: 16px;
}

.cta-section p {
  font-size: 1.05rem;
  opacity: 0.9;
  margin-bottom: 40px;
}

.contact {
  padding: 120px 0;
  background: var(--primary-light);
}

.form-wrapper {
  max-width: 700px;
  margin: 0 auto;
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(61,170,138,0.2);
}

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--gray-900);
}

.form-group label .required {
  color: var(--danger);
  margin-left: 4px;
  font-size: 0.8rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--gray-300);
  border-radius: 8px;
  font-size: 1rem;
  font-family: 'Noto Sans JP', sans-serif;
  transition: border-color 0.3s, box-shadow 0.3s;
  background: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(61,170,138,0.15);
}

.form-group textarea {
  height: 120px;
  resize: vertical;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 0.9rem;
}

.checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
}

.form-submit {
  width: 100%;
  padding: 16px;
  background: var(--accent);
  color: var(--gray-900);
  border: none;
  border-radius: 50px;
  font-size: 1.1rem;
  font-weight: 700;
  font-family: 'Noto Sans JP', sans-serif;
  cursor: pointer;
  transition: all 0.3s;
  box-shadow: 0 4px 20px rgba(245,200,66,0.3);
}

.form-submit:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(245,200,66,0.4);
}

.form-submit:disabled {
  background: var(--gray-300);
  color: var(--gray-500);
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

.form-note {
  font-size: 0.8rem;
  color: var(--gray-500);
  text-align: center;
  margin-top: 16px;
}

.form-note a {
  color: var(--primary);
  text-decoration: underline;
}

.footer {
  background: var(--dark);
  color: var(--white);
  padding: 60px 0 30px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 40px;
  flex-wrap: wrap;
  gap: 40px;
}

.footer-logo {
  margin-bottom: 16px;
}

.footer-logo-img {
  height: 32px;
  width: auto;
  filter: brightness(0) invert(1);
}

.footer-company p {
  font-size: 0.85rem;
  opacity: 0.7;
  line-height: 1.7;
}

.footer-links h4 {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 16px;
  opacity: 0.9;
}

.footer-links a {
  display: block;
  color: var(--white);
  opacity: 0.6;
  text-decoration: none;
  font-size: 0.85rem;
  margin-bottom: 8px;
  transition: opacity 0.3s;
}

.footer-links a:hover {
  opacity: 1;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  text-align: center;
  font-size: 0.8rem;
  opacity: 0.5;
}

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.toast {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: var(--success);
  color: var(--white);
  padding: 16px 28px;
  border-radius: var(--radius);
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.4s;
  z-index: 9999;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.toast.error {
  background: var(--danger);
}

@media (max-width: 768px) {
  .hero {
    padding: 80px 20px 40px;
  }

  .hero-inner {
    padding-top: 40px;
  }

  .hero-sub {
    font-size: 0.95rem;
  }

  .hero-images-row {
    flex-direction: column;
    gap: 24px;
  }

  .problem-header {
    flex-direction: column;
    text-align: center;
  }

  .problem-header-text .section-title,
  .problem-header-text .section-desc {
    text-align: center;
  }

  .problem-header-image img {
    max-width: 200px;
  }

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

  .voice-heading-image {
    display: none;
  }

  .excel-problems {
    padding: 32px 20px;
  }

  .excel-problems-inner {
    flex-direction: column;
  }

  .excel-problems-content {
    text-align: center;
  }

  .excel-problems-image img {
    width: 180px;
  }

  .excel-list {
    grid-template-columns: 1fr;
  }

  .feature-item {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .feature-item.reverse {
    direction: ltr;
  }

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

  .form-wrapper {
    padding: 32px 20px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .section-title {
    font-size: 1.5rem;
  }

  .cta-section h2 {
    font-size: 1.6rem;
  }

  .footer-content {
    flex-direction: column;
    gap: 32px;
  }

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

  .header-cta-full {
    display: none;
  }

  .header-cta-short {
    display: inline;
  }

  .header-cta {
    padding: 8px 16px;
    font-size: 0.8rem;
  }

  .logo-img {
    height: 28px;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.5rem;
  }

  .hero-stat-number {
    font-size: 2.5rem;
  }

  .container {
    padding: 0 16px;
  }
}