/* ============================================
   INTECTION Inc. - Corporate Website Stylesheet
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {
  --color-primary: #1A5A54;
  --color-primary-dark: #134842;
  --color-primary-light: #2A7A72;
  --color-accent-teal: #3D9B8F;
  --color-accent-light: #E8F5F3;
  --color-accent-pale: #F0FAF8;
  --color-white: #FFFFFF;
  --color-black: #1A1A1A;
  --color-dark-gray: #333333;
  --color-gray: #666666;
  --color-light-gray: #999999;
  --color-border: #E0E0E0;
  --color-bg-light: #F7F8F9;
  --color-bg-pale: #FAFBFC;

  --font-ja: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
  --font-en: 'Cormorant Garamond', 'Times New Roman', serif;
  --font-en-sans: 'Inter', 'Helvetica Neue', Arial, sans-serif;

  --header-height: 80px;
  --container-width: 1100px;
  --section-padding: 120px;
  --transition-base: 0.3s ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-ja);
  font-weight: 400;
  line-height: 1.8;
  color: var(--color-dark-gray);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-base);
}

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

ul, ol {
  list-style: none;
}

address {
  font-style: normal;
}

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 40px;
}

.pc-only {
  display: inline;
}

.sp-only {
  display: none;
}

/* ---------- HEADER ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  transition: background-color 0.4s ease, box-shadow 0.4s ease;
}

.site-header.is-scrolled {
  background-color: rgba(255, 255, 255, 0.96);
  box-shadow: 0 1px 12px rgba(0, 0, 0, 0.06);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.header-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 40px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 1001;
}

.logo-icon {
  width: 32px;
  height: 32px;
}

.header-logo .logo-text {
  font-family: 'Montserrat', var(--font-en-sans);
  font-size: 1.1rem;
  font-weight: 300;
  letter-spacing: 0.35em;
  color: var(--color-white);
  transition: color 0.4s ease;
}

.site-header.is-scrolled .header-logo .logo-text {
  color: var(--color-dark-gray);
}

.header-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-link {
  font-family: var(--font-en-sans);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--color-white);
  position: relative;
  padding: 4px 0;
  transition: color 0.4s ease;
}

.site-header.is-scrolled .nav-link {
  color: var(--color-dark-gray);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent-teal);
  transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.is-active::after {
  width: 100%;
}

.site-header.is-scrolled .nav-link:hover {
  color: var(--color-primary);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1001;
  gap: 6px;
  padding: 0;
}

.hamburger-line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-white);
  transition: all 0.3s ease;
}

.site-header.is-scrolled .hamburger-line {
  background-color: var(--color-dark-gray);
}

.hamburger.is-open .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 6px);
}

.hamburger.is-open .hamburger-line:nth-child(2) {
  opacity: 0;
}

.hamburger.is-open .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -6px);
}

/* Mobile Nav Overlay */
.mobile-nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(26, 90, 84, 0.97);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

.mobile-nav-overlay.is-open {
  opacity: 1;
  visibility: visible;
}

.mobile-nav-list {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.mobile-nav-link {
  font-family: var(--font-en-sans);
  font-size: 1.1rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--color-white);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.mobile-nav-overlay.is-open .mobile-nav-link {
  opacity: 1;
  transform: translateY(0);
}

.mobile-nav-overlay.is-open .mobile-nav-list li:nth-child(1) .mobile-nav-link { transition-delay: 0.1s; }
.mobile-nav-overlay.is-open .mobile-nav-list li:nth-child(2) .mobile-nav-link { transition-delay: 0.15s; }
.mobile-nav-overlay.is-open .mobile-nav-list li:nth-child(3) .mobile-nav-link { transition-delay: 0.2s; }
.mobile-nav-overlay.is-open .mobile-nav-list li:nth-child(4) .mobile-nav-link { transition-delay: 0.25s; }
.mobile-nav-overlay.is-open .mobile-nav-list li:nth-child(5) .mobile-nav-link { transition-delay: 0.3s; }

/* ---------- HERO Section ---------- */
.hero-section {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    linear-gradient(135deg, #2C3E50 0%, #1A5A54 30%, #34495E 60%, #2C3E50 100%);
  background-size: 400% 400%;
  animation: heroGradient 20s ease infinite;
}

/* Geometric overlay pattern for architectural feel */
.hero-bg::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(0deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero-bg::after {
  content: '';
  position: absolute;
  bottom: -50%;
  right: -20%;
  width: 80%;
  height: 120%;
  background: radial-gradient(ellipse, rgba(61, 155, 143, 0.15) 0%, transparent 70%);
}

@keyframes heroGradient {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.15);
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 40px;
}

.hero-catch-en {
  font-family: var(--font-en);
  font-size: clamp(1.6rem, 3.5vw, 2.8rem);
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--color-white);
  margin-bottom: 20px;
  line-height: 1.4;
}

.hero-catch-ja {
  font-family: var(--font-ja);
  font-size: clamp(0.85rem, 1.4vw, 1.05rem);
  font-weight: 400;
  letter-spacing: 0.15em;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.8;
}

/* Hero scroll indicator */
.hero-scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 2;
}

.scroll-text {
  font-family: var(--font-en-sans);
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 8px;
}

.scroll-line {
  display: block;
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.5), transparent);
  animation: scrollLineAnim 2s ease-in-out infinite;
}

@keyframes scrollLineAnim {
  0% { opacity: 0; transform: scaleY(0); transform-origin: top; }
  50% { opacity: 1; transform: scaleY(1); transform-origin: top; }
  100% { opacity: 0; transform: scaleY(1); transform-origin: bottom; }
}

/* Hero fade-in animations */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 1s ease forwards;
}

.delay-1 {
  animation-delay: 0.4s;
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- SECTION COMMON ---------- */
.section {
  padding: var(--section-padding) 0;
}

.section-heading {
  text-align: center;
  margin-bottom: 64px;
}

.heading-en {
  display: block;
  font-family: var(--font-en);
  font-size: clamp(2rem, 3vw, 2.6rem);
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--color-primary);
  line-height: 1.2;
  margin-bottom: 12px;
}

.heading-ja {
  font-family: var(--font-ja);
  font-size: 0.9rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  color: var(--color-gray);
}

/* Scroll animation */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- MESSAGE Section ---------- */
.message-section {
  background-color: var(--color-white);
}

.message-body {
  max-width: 740px;
  margin: 0 auto;
  text-align: center;
}

.message-body p {
  font-size: 0.94rem;
  line-height: 2.2;
  color: var(--color-dark-gray);
  margin-bottom: 32px;
  letter-spacing: 0.04em;
}

.message-body p:last-child {
  margin-bottom: 0;
}

/* ---------- BUSINESS Section ---------- */
.business-section {
  background-color: var(--color-bg-light);
}

.business-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.business-card {
  display: flex;
  align-items: flex-start;
  padding: 48px 0;
  border-bottom: 1px solid var(--color-border);
  gap: 40px;
}

.business-card:first-child {
  border-top: 1px solid var(--color-border);
}

.business-number {
  font-family: var(--font-en);
  font-size: 2.8rem;
  font-weight: 500;
  color: var(--color-primary);
  line-height: 1;
  min-width: 80px;
  opacity: 0.7;
  letter-spacing: 0.02em;
}

.business-content {
  flex: 1;
}

.business-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-black);
  margin-bottom: 14px;
  letter-spacing: 0.04em;
  line-height: 1.6;
}

.business-desc {
  font-size: 0.88rem;
  line-height: 2;
  color: var(--color-gray);
  letter-spacing: 0.03em;
}

/* ---------- COMPANY Section ---------- */
.company-section {
  background-color: var(--color-white);
}

.company-table-wrap {
  max-width: 800px;
  margin: 0 auto;
}

.company-table {
  width: 100%;
  border-collapse: collapse;
}

.company-table tr {
  border-bottom: 1px solid var(--color-border);
}

.company-table tr:first-child {
  border-top: 1px solid var(--color-border);
}

.company-table th,
.company-table td {
  padding: 24px 0;
  font-size: 0.92rem;
  line-height: 1.8;
  vertical-align: top;
  text-align: left;
}

.company-table th {
  width: 160px;
  font-weight: 500;
  color: var(--color-black);
  letter-spacing: 0.06em;
  padding-right: 32px;
}

.company-table td {
  color: var(--color-dark-gray);
}

.tel-link,
.mail-link {
  color: var(--color-primary);
  transition: opacity var(--transition-base);
}

.tel-link:hover,
.mail-link:hover {
  opacity: 0.7;
}

/* Company Map */
.company-map {
  max-width: 800px;
  margin: 48px auto 0;
}

.company-map iframe {
  display: block;
  width: 100%;
}

/* ---------- CONTACT Section ---------- */
.contact-section {
  background-color: var(--color-bg-pale);
}

.contact-intro {
  text-align: center;
  margin-bottom: 56px;
}

.contact-intro p {
  font-size: 0.92rem;
  color: var(--color-gray);
  line-height: 2;
  letter-spacing: 0.03em;
}

.contact-form {
  max-width: 680px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 28px;
}

.form-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-dark-gray);
  margin-bottom: 10px;
  letter-spacing: 0.04em;
}

.label-required,
.label-optional {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 500;
  padding: 2px 8px;
  border-radius: 3px;
  letter-spacing: 0.06em;
  line-height: 1.6;
}

.label-required {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.label-optional {
  background-color: var(--color-border);
  color: var(--color-gray);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 14px 16px;
  font-family: var(--font-ja);
  font-size: 0.92rem;
  color: var(--color-dark-gray);
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
  outline: none;
  appearance: none;
  -webkit-appearance: none;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: #bbb;
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--color-accent-teal);
  box-shadow: 0 0 0 3px rgba(61, 155, 143, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 140px;
}

.form-checkbox-group {
  margin-top: 8px;
  margin-bottom: 12px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 0.88rem;
  color: var(--color-dark-gray);
}

.form-checkbox {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.checkbox-custom {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-radius: 3px;
  background-color: var(--color-white);
  transition: all var(--transition-base);
  flex-shrink: 0;
}

.form-checkbox:checked + .checkbox-custom {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

.form-checkbox:checked + .checkbox-custom::after {
  content: '';
  display: block;
  width: 6px;
  height: 10px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
  margin-top: -2px;
}

.form-checkbox:focus + .checkbox-custom {
  box-shadow: 0 0 0 3px rgba(61, 155, 143, 0.15);
}

.form-note {
  margin-bottom: 32px;
}

.form-note p {
  font-size: 0.78rem;
  color: var(--color-light-gray);
  line-height: 1.8;
}

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

.privacy-link {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.privacy-link:hover {
  opacity: 0.7;
}

.form-submit {
  text-align: center;
}

.btn-submit {
  display: inline-block;
  min-width: 280px;
  padding: 16px 48px;
  font-family: var(--font-ja);
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--color-white);
  background-color: var(--color-primary);
  border: 2px solid var(--color-primary);
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--transition-base);
}

.btn-submit:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}

.btn-submit:active {
  transform: scale(0.98);
}

.btn-submit:disabled {
  background-color: #ccc;
  border-color: #ccc;
  cursor: not-allowed;
}

/* Form success/error messages */
.form-message {
  text-align: center;
  padding: 20px;
  border-radius: 4px;
  margin-top: 20px;
  font-size: 0.9rem;
  display: none;
}

.form-message.success {
  display: block;
  background-color: var(--color-accent-light);
  color: var(--color-primary);
  border: 1px solid var(--color-accent-teal);
}

.form-message.error {
  display: block;
  background-color: #FFF0F0;
  color: #C0392B;
  border: 1px solid #E6A5A5;
}

/* ---------- FOOTER ---------- */
.site-footer {
  background-color: #F3F4F6;
  color: var(--color-gray);
  padding-top: 72px;
  border-top: 1px solid var(--color-border);
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 40px;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding-bottom: 56px;
  border-bottom: 1px solid #DCDFE3;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-logo-icon {
  width: 28px;
  height: 28px;
}

.footer-logo .logo-text {
  font-family: 'Montserrat', var(--font-en-sans);
  font-size: 1rem;
  font-weight: 300;
  letter-spacing: 0.35em;
  color: var(--color-dark-gray);
}

.footer-company-name {
  font-size: 0.82rem;
  margin-top: 12px;
  color: var(--color-dark-gray);
  letter-spacing: 0.08em;
}

.footer-address {
  font-size: 0.8rem;
  line-height: 1.8;
  margin-top: 20px;
  color: var(--color-gray);
}

.footer-tel,
.footer-mail {
  font-size: 0.8rem;
  margin-top: 6px;
  color: var(--color-gray);
}

.footer-tel a,
.footer-mail a {
  color: var(--color-gray);
  transition: color var(--transition-base);
}

.footer-tel a:hover,
.footer-mail a:hover {
  color: var(--color-primary);
}

.footer-nav {
  padding-top: 8px;
}

.footer-nav-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-nav-list a {
  font-family: var(--font-en-sans);
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.14em;
  color: var(--color-light-gray);
  transition: color var(--transition-base);
}

.footer-nav-list a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  padding: 28px 0;
  text-align: center;
}

.copyright {
  font-family: var(--font-en-sans);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--color-light-gray);
}

/* ---------- Header Broker Button ---------- */
.header-broker-btn {
  display: inline-block;
  font-family: var(--font-ja);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  padding: 6px 16px;
  margin-left: 24px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 3px;
  color: var(--color-white);
  transition: all 0.3s ease;
  white-space: nowrap;
}

.site-header.is-scrolled .header-broker-btn {
  border-color: var(--color-accent-teal);
  color: var(--color-primary);
}

.header-broker-btn:hover {
  background-color: var(--color-accent-teal);
  border-color: var(--color-accent-teal);
  color: var(--color-white);
}

.mobile-broker-link {
  font-size: 0.85rem !important;
  opacity: 0.75;
}

/* ---------- Broker Banner ---------- */
.broker-banner {
  padding: 0;
}

.broker-banner .container {
  max-width: 100%;
  padding: 0;
}

.broker-banner-link {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 28px 40px;
  background-color: var(--color-primary);
  color: var(--color-white);
  transition: background-color 0.3s ease;
}

.broker-banner-link:hover {
  background-color: var(--color-primary-light);
}

.broker-banner-label {
  font-family: var(--font-en-sans);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  padding: 3px 10px;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 2px;
  opacity: 0.8;
}

.broker-banner-text {
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.1em;
}

.broker-banner-sub {
  font-size: 0.8rem;
  font-weight: 400;
  margin-left: 8px;
  opacity: 0.75;
}

.broker-banner-arrow {
  font-size: 1.1rem;
  transition: transform 0.3s ease;
}

.broker-banner-link:hover .broker-banner-arrow {
  transform: translateX(4px);
}

/* ---------- Back to Top ---------- */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  background-color: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-base);
  z-index: 100;
  box-shadow: 0 2px 12px rgba(26, 90, 84, 0.3);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-2px);
}

/* ============================================
   RESPONSIVE
   ============================================ */

/* ---------- Tablet ---------- */
@media screen and (max-width: 900px) {
  :root {
    --section-padding: 88px;
    --header-height: 70px;
  }

  .container {
    padding: 0 28px;
  }

  .header-inner {
    padding: 0 24px;
  }

  .header-nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .section-heading {
    margin-bottom: 48px;
  }

  .business-card {
    padding: 36px 0;
    gap: 28px;
  }

  .business-number {
    font-size: 2.2rem;
    min-width: 60px;
  }

  .footer-top {
    flex-direction: column;
    gap: 40px;
  }

  .footer-nav-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 20px;
  }
}

/* ---------- Mobile ---------- */
@media screen and (max-width: 600px) {
  :root {
    --section-padding: 72px;
    --header-height: 64px;
  }

  .container {
    padding: 0 20px;
  }

  .header-inner {
    padding: 0 16px;
  }

  .header-logo .logo-text {
    font-size: 0.9rem;
    letter-spacing: 0.3em;
  }

  .logo-icon {
    width: 26px;
    height: 26px;
  }

  .pc-only {
    display: none;
  }

  .sp-only {
    display: inline;
  }

  /* Hero */
  .hero-section {
    min-height: 100svh;
  }

  .hero-content {
    padding: 0 24px;
  }

  .hero-catch-en {
    font-size: 1.4rem;
    margin-bottom: 16px;
  }

  .hero-catch-ja {
    font-size: 0.82rem;
  }

  /* Section heading */
  .heading-en {
    font-size: 1.8rem;
  }

  .heading-ja {
    font-size: 0.82rem;
  }

  .section-heading {
    margin-bottom: 40px;
  }

  /* Message */
  .message-body {
    text-align: left;
  }

  .message-body p {
    font-size: 0.88rem;
    line-height: 2;
    margin-bottom: 24px;
  }

  /* Business */
  .business-card {
    flex-direction: column;
    padding: 32px 0;
    gap: 12px;
  }

  .business-number {
    font-size: 2rem;
  }

  .business-title {
    font-size: 1rem;
  }

  .business-desc {
    font-size: 0.84rem;
  }

  /* Company */
  .company-table th,
  .company-table td {
    display: block;
    width: 100%;
    padding: 0;
  }

  .company-table th {
    padding-top: 20px;
    padding-bottom: 4px;
    font-size: 0.82rem;
    color: var(--color-primary);
  }

  .company-table td {
    padding-bottom: 20px;
    font-size: 0.88rem;
  }

  .company-table tr {
    display: block;
  }

  /* Contact */
  .contact-intro {
    text-align: left;
    margin-bottom: 40px;
  }

  .contact-intro p {
    font-size: 0.86rem;
  }

  .form-input,
  .form-textarea {
    padding: 12px 14px;
    font-size: 16px; /* prevent iOS zoom */
  }

  .btn-submit {
    width: 100%;
    min-width: unset;
    padding: 14px 32px;
  }

  /* Footer */
  .site-footer {
    padding-top: 56px;
  }

  .footer-inner {
    padding: 0 20px;
  }

  .footer-nav-list {
    flex-direction: column;
    gap: 14px;
  }

  .footer-bottom {
    padding: 20px 0;
  }

  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 42px;
    height: 42px;
  }

  /* Broker banner mobile */
  .broker-banner-link {
    flex-wrap: wrap;
    padding: 20px 24px;
    gap: 8px;
  }

  .broker-banner-label {
    font-size: 0.6rem;
  }

  .broker-banner-text {
    font-size: 0.86rem;
  }

  .broker-banner-sub {
    display: block;
    margin-left: 0;
    margin-top: 2px;
  }
}