:root {
  --primary-color: #162c4a;
  --text-main: #333333;
  --text-light: #555555;
  --bg-base: #ffffff;
  --bg-gray: #f7f9fa;
  --bg-blue-light: #f0f6f9;
  --teal-main: #0a7a82;
  --teal-gradient: linear-gradient(135deg, #0a7a82 0%, #10a2ab 100%);
  --shadow-sm: 0 4px 12px rgba(22, 44, 74, 0.05);
  --shadow-md: 0 8px 24px rgba(22, 44, 74, 0.08);
  --radius-md: 12px;
  --radius-lg: 16px;
}

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

body {
  font-family: 'Inter', 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
  color: var(--text-main);
  line-height: 1.8;
  background-color: var(--bg-base);
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; }

/* ── Layout ── */
.container {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}
.container-sm {
  width: 100%;
  max-width: 880px;
  margin: 0 auto;
  padding: 0 24px;
}

section { padding: 96px 0; }
.bg-gray       { background-color: var(--bg-gray); }
.bg-blue-light { background-color: var(--bg-blue-light); }

/* ── Typography ── */
.sec-label {
  display: inline-block;
  color: var(--teal-main);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.sec-title {
  font-size: 32px;
  color: var(--primary-color);
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 24px;
}
.sec-header {
  text-align: center;
  margin-bottom: 56px;
}
.sec-desc {
  color: var(--text-light);
  font-size: 16px;
  max-width: 720px;
  margin: 0 auto;
}

/* ── Global Nav ── */
.global-nav {
  position: sticky;
  top: 0;
  z-index: 900;
  background: #fff;
  border-bottom: 1px solid rgba(22,44,74,0.08);
  box-shadow: 0 2px 12px rgba(22,44,74,0.06);
}
.global-nav-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
}
.nav-brand {
  font-size: 20px;
  font-weight: 700;
  background: var(--teal-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.01em;
}
@media (max-width: 768px) {
  .global-nav-inner { height: 56px; }
  .nav-brand { font-size: 17px; }
}

/* ── Hero ── */
.hero {
  position: relative;
  padding: 80px 24px 80px;
  background: linear-gradient(160deg, #f0f6f9 0%, #ffffff 60%);
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -10%;
  width: 70%;
  padding-bottom: 70%;
  background: radial-gradient(circle, rgba(10,122,130,0.07) 0%, rgba(255,255,255,0) 70%);
  border-radius: 50%;
  z-index: 0;
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 1080px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.hero-text {
  text-align: left;
}
.hero-visual {
  position: relative;
}
.hero-visual img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 60px rgba(22,44,74,0.12);
  display: block;
}

.hero-badge {
  display: inline-block;
  background: var(--teal-gradient);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 6px 20px;
  border-radius: 50px;
  margin-bottom: 24px;
}
.hero h1 {
  font-size: 40px;
  color: var(--primary-color);
  line-height: 1.3;
  font-weight: 700;
  margin-bottom: 20px;
}
.hero h1 span {
  background: var(--teal-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero .lead {
  font-size: 17px;
  color: var(--text-light);
  margin-bottom: 32px;
  line-height: 1.8;
}

/* ── Floating CTA ── */
.float-cta {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-end;
}
.float-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 24px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 700;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, opacity 0.2s;
  text-decoration: none;
}
.float-btn:hover {
  transform: translateY(-3px);
  opacity: 0.92;
}
.float-btn-primary {
  background: var(--teal-gradient);
  color: #fff;
  box-shadow: 0 8px 24px rgba(10,122,130,0.4);
}
.float-btn-primary:hover {
  box-shadow: 0 12px 32px rgba(10,122,130,0.5);
}
.float-btn-secondary {
  background: #fff;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
  box-shadow: 0 4px 16px rgba(22,44,74,0.12);
}
.float-btn-secondary:hover {
  box-shadow: 0 8px 24px rgba(22,44,74,0.18);
}
.float-btn-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(255,255,255,0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
}
.float-btn-secondary .float-btn-icon {
  background: var(--bg-blue-light);
}
.float-cta {
  animation: floatIn 0.5s cubic-bezier(0.34,1.56,0.64,1) both;
  animation-delay: 0.6s;
}
@keyframes floatIn {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
@media (max-width: 600px) {
  .float-cta {
    bottom: 20px;
    right: 16px;
    left: 16px;
    align-items: stretch;
  }
  .float-btn {
    justify-content: center;
    border-radius: 12px;
    font-size: 14px;
    padding: 14px 20px;
  }
}

/* ── Key Points Bar ── */
.keypoints {
  background: var(--primary-color);
  padding: 0;
}
.keypoints-inner {
  max-width: 1080px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}
.keypoint-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 32px 36px;
  border-right: 1px solid rgba(255,255,255,0.1);
  transition: background 0.2s;
}
.keypoint-item:last-child { border-right: none; }
.keypoint-item:hover { background: rgba(255,255,255,0.04); }
.keypoint-num {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--teal-gradient);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(10,122,130,0.4);
}
.keypoint-text strong {
  display: block;
  color: #ffffff;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
}
.keypoint-text span {
  display: block;
  color: rgba(255,255,255,0.55);
  font-size: 12px;
  margin-top: 2px;
}
@media (max-width: 768px) {
  .keypoints-inner {
    grid-template-columns: 1fr;
  }
  .keypoint-item {
    border-right: none;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    padding: 20px 24px;
  }
  .keypoint-item:last-child { border-bottom: none; }
}

/* ── Grids ── */
.grid-2    { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3    { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }

/* ── Card ── */
.card {
  background: #fff;
  padding: 32px 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(22,44,74,0.05);
  height: 100%;
  transition: box-shadow 0.2s, transform 0.2s;
}
.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.card-icon {
  width: 48px;
  height: 48px;
  background: var(--bg-blue-light);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 16px;
}
.card-icon-title {
  color: var(--teal-main);
  font-weight: 700;
  font-size: 19px;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.card-icon-title::before {
  content: '✓';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: var(--bg-blue-light);
  border-radius: 50%;
  font-size: 13px;
  flex-shrink: 0;
}

/* ── Issue Box ── */
.issue-box {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 40px;
  box-shadow: var(--shadow-sm);
}
.issue-item {
  display: flex;
  gap: 20px;
  padding: 28px 0;
  border-bottom: 1px solid #eeeeee;
}
.issue-item:last-child  { border-bottom: none; padding-bottom: 0; }
.issue-item:first-child { padding-top: 0; }
.issue-num {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: var(--bg-blue-light);
  color: var(--teal-main);
  font-size: 20px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
}
.issue-content h3 {
  font-size: 20px;
  color: var(--primary-color);
  margin-bottom: 8px;
  margin-top: 8px;
}

/* ── Solution Box ── */
.solution-box {
  background: var(--teal-gradient);
  color: #fff;
  padding: 56px 48px;
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-md);
}
.solution-box h3 {
  font-size: 28px;
  margin-bottom: 24px;
  line-height: 1.4;
}
.solution-box p {
  font-size: 16px;
  opacity: 0.92;
  max-width: 760px;
  margin: 0 auto;
  line-height: 1.9;
}
.solution-box strong { font-weight: 700; }

/* ── Comparison Table ── */
.table-container {
  background: #fff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
table { width: 100%; border-collapse: collapse; }
th, td {
  padding: 22px 24px;
  border-bottom: 1px solid #eeeeee;
}
th {
  background: var(--bg-gray);
  font-weight: 700;
  color: var(--primary-color);
  width: 20%;
}
thead th {
  background: #fff;
  border-bottom: 2px solid var(--teal-main);
  text-align: center;
  width: 40%;
}
thead th:first-child {
  width: 20%;
  border-bottom: 2px solid #eeeeee;
}
.th-highlight {
  background: var(--bg-blue-light) !important;
  color: var(--teal-main);
}
tbody td:last-child {
  background: var(--bg-blue-light);
  font-weight: 700;
  color: var(--primary-color);
}
tbody tr:last-child th,
tbody tr:last-child td { border-bottom: none; }

/* ── Flow ── */
.flow-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  position: relative;
}
.flow-grid::before {
  content: '';
  position: absolute;
  top: 36px;
  left: calc(10% + 8px);
  right: calc(10% + 8px);
  height: 2px;
  background: linear-gradient(90deg, var(--teal-main), #10a2ab);
  z-index: 0;
}
.flow-card {
  background: #fff;
  border: 1px solid #eeeeee;
  padding: 28px 16px 24px;
  border-radius: var(--radius-md);
  text-align: center;
  position: relative;
  z-index: 1;
  box-shadow: var(--shadow-sm);
  margin: 0 8px;
  transition: box-shadow 0.2s, transform 0.2s;
}
.flow-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.flow-step-num {
  width: 48px;
  height: 48px;
  background: var(--teal-gradient);
  color: #fff;
  font-weight: 700;
  font-size: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 12px;
  box-shadow: 0 4px 12px rgba(10,122,130,0.3);
}
.flow-step {
  color: var(--teal-main);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
}
.flow-title {
  color: var(--primary-color);
  font-weight: 700;
  font-size: 17px;
  margin-bottom: 10px;
}
.flow-desc {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.6;
}

/* ── Stats ── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 56px;
}
.stat-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 36px 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(10,122,130,0.08);
}
.stat-num {
  font-size: 48px;
  font-weight: 700;
  background: var(--teal-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
  margin-bottom: 8px;
}
.stat-unit { font-size: 20px; }
.stat-label {
  font-size: 14px;
  color: var(--text-light);
  margin-top: 8px;
}

/* ── FAQ ── */
.faq-list { display: flex; flex-direction: column; gap: 16px; }
details {
  background: #fff;
  border: 1px solid #eeeeee;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s;
}
details[open] { box-shadow: var(--shadow-md); }
summary {
  padding: 24px;
  font-weight: 700;
  font-size: 17px;
  color: var(--primary-color);
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 56px;
  transition: color 0.2s;
}
summary:hover { color: var(--teal-main); }
summary::-webkit-details-marker { display: none; }
summary::after {
  content: '+';
  position: absolute;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--teal-main);
  font-size: 26px;
  font-weight: 300;
  line-height: 1;
}
details[open] summary::after { content: '−'; }
.faq-content {
  padding: 0 24px 24px;
  color: var(--text-light);
  line-height: 1.8;
  border-top: 1px solid #f0f0f0;
  margin: 0 24px;
  padding-top: 20px;
}

/* ── Closing / CTA ── */
.closing-sec {
  background: var(--bg-blue-light);
  text-align: center;
}

/* ── Contact Form ── */
.form-sec {
  background: var(--bg-base);
}
.form-wrap {
  background: #fff;
  border: 1px solid rgba(22,44,74,0.07);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 48px 56px;
  max-width: 760px;
  margin: 0 auto;
}
.form-group {
  margin-bottom: 28px;
}
.form-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 8px;
}
.form-required {
  display: inline-block;
  background: var(--teal-gradient);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 4px;
  letter-spacing: 0.04em;
}
.form-optional {
  display: inline-block;
  background: #e8edf2;
  color: var(--text-light);
  font-size: 11px;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 4px;
}
.form-input,
.form-select {
  width: 100%;
  padding: 14px 16px;
  border: 1.5px solid #dde3ea;
  border-radius: 8px;
  font-size: 15px;
  color: var(--text-main);
  background: #fafbfc;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
  font-family: inherit;
}
.form-input:focus,
.form-select:focus {
  border-color: var(--teal-main);
  box-shadow: 0 0 0 3px rgba(10,122,130,0.1);
  background: #fff;
}
.form-select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%230a7a82' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
  cursor: pointer;
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.form-radio-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.form-radio-label {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border: 1.5px solid #dde3ea;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  color: var(--text-main);
  background: #fafbfc;
  transition: border-color 0.2s, background 0.2s;
  font-weight: 500;
}
.form-radio-label:hover {
  border-color: var(--teal-main);
  background: var(--bg-blue-light);
}
.form-radio-label input[type="radio"] {
  accent-color: var(--teal-main);
  width: 17px;
  height: 17px;
  flex-shrink: 0;
}
.form-radio-label input[type="radio"]:checked + span {
  color: var(--teal-main);
  font-weight: 700;
}
.form-radio-label:has(input:checked) {
  border-color: var(--teal-main);
  background: var(--bg-blue-light);
}
.form-submit {
  width: 100%;
  padding: 20px;
  background: var(--teal-gradient);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  box-shadow: 0 6px 20px rgba(10,122,130,0.3);
  transition: opacity 0.2s, transform 0.2s;
  margin-top: 8px;
  font-family: inherit;
}
.form-submit:hover {
  opacity: 0.88;
  transform: translateY(-2px);
}
.form-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}
.form-note {
  text-align: center;
  font-size: 13px;
  color: var(--text-light);
  margin-top: 16px;
}
.form-hint {
  font-size: 12px;
  color: var(--text-light);
  margin-top: 6px;
}
@media (max-width: 768px) {
  .form-wrap { padding: 32px 20px; }
  .form-grid { grid-template-columns: 1fr; gap: 0; }
  .form-radio-group { grid-template-columns: 1fr; }
}

/* ── Footer ── */
footer {
  background: var(--primary-color);
  color: #fff;
  padding: 64px 24px;
}
.footer-inner { max-width: 960px; margin: 0 auto; }
.footer-brand {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
  background: var(--teal-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
}
.footer-tagline {
  color: rgba(255,255,255,0.6);
  font-size: 13px;
  margin-bottom: 24px;
}
.footer-meta {
  margin-bottom: 32px;
}
.footer-company-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: rgba(255,255,255,0.75);
  font-size: 14px;
  font-weight: 600;
  border-bottom: 1px solid rgba(255,255,255,0.3);
  padding-bottom: 2px;
  transition: color 0.2s, border-color 0.2s;
}
.footer-company-link::after {
  content: '↗';
  font-size: 12px;
  opacity: 0.7;
}
.footer-company-link:hover {
  color: #ffffff;
  border-color: rgba(255,255,255,0.8);
}
.ref-box {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 32px;
  font-size: 13px;
  color: rgba(255,255,255,0.6);
}
.ref-box strong { color: rgba(255,255,255,0.85); }
.ref-box ul { padding-left: 20px; margin-top: 12px; }
.ref-box li { margin-bottom: 8px; }

/* ── Responsive ── */
@media (max-width: 992px) {
  .flow-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .flow-grid::before { display: none; }
  .flow-card { margin: 0; }
  .stats-grid { grid-template-columns: 1fr; gap: 16px; }
}
@media (max-width: 900px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-text { text-align: center; }
  .cta-group { justify-content: center; }
}
@media (max-width: 768px) {
  section { padding: 64px 0; }
  .hero { padding: 60px 16px 80px; }
  .hero h1 { font-size: 28px; }
  .hero .lead { font-size: 15px; }
  .btn { min-width: unset; width: 100%; font-size: 16px; }
  .sec-title { font-size: 24px; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .issue-item { flex-direction: column; gap: 12px; }
  .issue-box { padding: 24px 20px; }
  .solution-box { padding: 36px 20px; }
  .solution-box h3 { font-size: 22px; }
  .table-container { overflow-x: auto; }
  table { min-width: 560px; }
}

.field-error-message {
  color: #e53e3e;
  font-size: 13px;
  margin-top: 6px;
}