/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Noto Sans JP", "Hiragino Sans", "Helvetica Neue", Arial, sans-serif;
  color: #2d2d2d;
  background: #fff;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }

/* ===== HEADER ===== */
.header {
  background: #1a2744;
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.header-logo {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.header-logo span {
  font-size: 11px;
  font-weight: 400;
  opacity: 0.7;
  margin-left: 12px;
}
.header-nav {
  display: flex;
  gap: 24px;
  align-items: center;
}
.header-nav a {
  color: rgba(255,255,255,0.75);
  font-size: 13px;
  transition: color 0.2s;
}
.header-nav a:hover { color: #fff; }

/* ===== HERO (SERVICE PAGE) ===== */
.service-hero {
  background: linear-gradient(135deg, #1a2744 0%, #243460 50%, #1e3a6e 100%);
  color: #fff;
  padding: 56px 0 48px;
  position: relative;
  overflow: hidden;
}
.service-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(59,89,152,0.15) 0%, transparent 70%);
  border-radius: 50%;
}
.service-hero-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
}
.service-hero .breadcrumb {
  font-size: 12px;
  opacity: 0.6;
  margin-bottom: 20px;
}
.service-hero .breadcrumb a {
  opacity: 0.8;
  transition: opacity 0.2s;
}
.service-hero .breadcrumb a:hover { opacity: 1; }
.service-hero .hero-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 16px;
}
.service-hero .hero-category {
  font-size: 12px;
  font-weight: 500;
  opacity: 0.7;
  margin-bottom: 8px;
  letter-spacing: 0.05em;
}
.service-hero h1 {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 12px;
}
.service-hero .hero-desc {
  font-size: 15px;
  line-height: 1.8;
  opacity: 0.85;
  max-width: 640px;
}

/* ===== SECTION ===== */
.section {
  padding: 64px 0;
}
.section-alt {
  background: #f5f7fa;
}
.section-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}
.section-label {
  font-size: 11px;
  font-weight: 600;
  color: #3b5998;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.section-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
  color: #1a2744;
}
.section-desc {
  font-size: 14px;
  color: #6b7280;
  margin-bottom: 40px;
  max-width: 640px;
}

/* ===== PROBLEM STATEMENT ===== */
.problem-section {
  background: #f5f7fa;
  padding: 56px 0;
}
.problem-box {
  background: #fff;
  border: 1px solid #e5e9f0;
  border-radius: 12px;
  padding: 32px;
  max-width: 720px;
}
.problem-box h3 {
  font-size: 16px;
  font-weight: 700;
  color: #1a2744;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.problem-list {
  list-style: none;
}
.problem-list li {
  font-size: 14px;
  color: #4b5563;
  padding: 8px 0;
  border-bottom: 1px solid #f3f4f6;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.problem-list li::before {
  content: '✕';
  color: #dc2626;
  font-weight: 700;
  font-size: 12px;
  margin-top: 2px;
  flex-shrink: 0;
}
.problem-list li:last-child { border-bottom: none; }

/* ===== FEATURES ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}
.feature-card {
  background: #fff;
  border: 1px solid #e5e9f0;
  border-radius: 12px;
  padding: 28px 24px;
}
.feature-card .feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 14px;
}
.feature-card h4 {
  font-size: 15px;
  font-weight: 700;
  color: #1a2744;
  margin-bottom: 8px;
}
.feature-card p {
  font-size: 13px;
  color: #6b7280;
  line-height: 1.7;
}

/* ===== INTEGRATION ===== */
.integration-box {
  background: linear-gradient(135deg, #eef2ff 0%, #e0e7ff 100%);
  border-radius: 12px;
  padding: 32px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.integration-box .int-icon {
  flex-shrink: 0;
  width: 64px;
  height: 64px;
  background: #fff;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.integration-box h3 {
  font-size: 16px;
  font-weight: 700;
  color: #1a2744;
  margin-bottom: 6px;
}
.integration-box p {
  font-size: 13px;
  color: #4b5563;
  line-height: 1.7;
}

/* ===== FEEDBACK FORM ===== */
.feedback-section {
  background: #f5f7fa;
  padding: 56px 0;
}
.feedback-form {
  max-width: 600px;
  background: #fff;
  border: 1px solid #e5e9f0;
  border-radius: 12px;
  padding: 32px;
}
.feedback-form h3 {
  font-size: 18px;
  font-weight: 700;
  color: #1a2744;
  margin-bottom: 8px;
}
.feedback-form .form-desc {
  font-size: 13px;
  color: #6b7280;
  margin-bottom: 24px;
}
.form-group {
  margin-bottom: 20px;
}
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: #374151;
  margin-bottom: 6px;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  color: #1f2937;
  background: #fff;
  transition: border-color 0.2s;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: #3b5998;
  box-shadow: 0 0 0 3px rgba(59,89,152,0.1);
}
.form-group textarea {
  resize: vertical;
  min-height: 100px;
}
.checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}
.checkbox-group label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 400;
  font-size: 13px;
  cursor: pointer;
}
.checkbox-group input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: #3b5998;
}

/* ===== CTA / DEMO ===== */
.demo-section {
  background: #1a2744;
  color: #fff;
  padding: 56px 0;
  text-align: center;
}
.demo-section h2 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
}
.demo-section p {
  font-size: 14px;
  opacity: 0.8;
  margin-bottom: 28px;
}
.demo-section .demo-note {
  font-size: 12px;
  opacity: 0.5;
  margin-top: 16px;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
  font-family: inherit;
}
.btn-primary {
  background: #3b5998;
  color: #fff;
}
.btn-primary:hover { background: #2d4a7a; }
.btn-secondary {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.4);
}
.btn-secondary:hover { background: rgba(255,255,255,0.1); }
.btn-submit {
  background: #3b5998;
  color: #fff;
  width: 100%;
  justify-content: center;
  padding: 14px;
}
.btn-submit:hover { background: #2d4a7a; }
.btn-google {
  background: #fff;
  color: #1a2744;
  font-weight: 600;
  padding: 14px 32px;
  font-size: 15px;
}
.btn-google:hover { background: #f1f5f9; }

/* ===== FOOTER ===== */
.footer {
  background: #111827;
  color: rgba(255,255,255,0.6);
  padding: 40px 0;
  font-size: 12px;
}
.footer-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer a {
  color: rgba(255,255,255,0.6);
  transition: color 0.2s;
}
.footer a:hover { color: #fff; }

/* ===== TOAST ===== */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: #1a2744;
  color: #fff;
  padding: 14px 24px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 1000;
}
.toast.show {
  transform: translateY(0);
  opacity: 1;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .service-hero h1 { font-size: 22px; }
  .service-hero { padding: 40px 0 36px; }
  .feature-grid { grid-template-columns: 1fr; }
  .integration-box { flex-direction: column; text-align: center; }
  .header-nav { display: none; }
}