/* ==================================================
   31Contents Corporate Site
   ================================================== */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, -apple-system, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", sans-serif;
  color: #333333;
  line-height: 1.7;
  background: #ffffff;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: opacity 0.2s;
}

a:hover {
  opacity: 0.75;
}

ul {
  list-style: none;
}

/* ==================================================
   Layout
   ================================================== */
.inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 80px 0;
}

/* ==================================================
   Header
   ================================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: #ffffff;
  border-bottom: 1px solid #eeeeee;
  z-index: 1000;
  height: 72px;
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.header-logo-mark {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: #1e2235;
}

.header-logo-mark span {
  color: #ff4fa3;
}

.header-logo-tag {
  font-size: 11px;
  color: #666666;
  line-height: 1.3;
  display: block;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.header-nav-list {
  display: flex;
  align-items: center;
  gap: 24px;
}

.header-nav-list a {
  font-size: 14px;
  color: #333333;
  font-weight: 500;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  padding: 11px 18px;
  border-radius: 6px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
  text-align: center;
}

.btn-outline {
  background: #ffffff;
  color: #1e2235;
  border-color: #1e2235;
}

.btn-outline:hover {
  background: #1e2235;
  color: #ffffff;
  opacity: 1;
}

.btn-pink {
  background: #ff4fa3;
  color: #ffffff;
  border-color: #ff4fa3;
}

.btn-pink:hover {
  background: #e83a90;
  border-color: #e83a90;
  opacity: 1;
}

.btn-lg {
  font-size: 16px;
  padding: 16px 28px;
}

.btn-white {
  background: #ffffff;
  color: #1e2235;
  border-color: #ffffff;
}

.btn-white:hover {
  background: transparent;
  color: #ffffff;
  opacity: 1;
}

/* Hamburger */
.hamburger {
  display: none;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  cursor: pointer;
  position: relative;
}

.hamburger span {
  display: block;
  position: absolute;
  left: 8px;
  right: 8px;
  height: 2px;
  background: #1e2235;
  transition: all 0.3s;
}

.hamburger span:nth-child(1) { top: 13px; }
.hamburger span:nth-child(2) { top: 19px; }
.hamburger span:nth-child(3) { top: 25px; }

.hamburger.is-open span:nth-child(1) { transform: rotate(45deg); top: 19px; }
.hamburger.is-open span:nth-child(2) { opacity: 0; }
.hamburger.is-open span:nth-child(3) { transform: rotate(-45deg); top: 19px; }

/* Main offset for fixed header */
main {
  padding-top: 72px;
}

/* ==================================================
   Hero
   ================================================== */
.hero {
  background: #ffffff;
  padding: 80px 0 100px;
}

.hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-title {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.4;
  color: #1e2235;
  margin-bottom: 22px;
  letter-spacing: 0.01em;
}

.hero-sub {
  font-size: 18px;
  color: #555555;
  margin-bottom: 36px;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-image {
  display: flex;
  justify-content: center;
}

.hero-image img {
  max-width: 100%;
  width: 420px;
}

/* ==================================================
   Section Common
   ================================================== */
.section-label {
  font-size: 14px;
  letter-spacing: 0.14em;
  color: #ff4fa3;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 10px;
  display: block;
}

.section-title {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.4;
  color: #1e2235;
  margin-bottom: 40px;
  text-align: center;
}

.section-title-en {
  color: #ff4fa3;
  font-size: 16px;
  margin-right: 10px;
  letter-spacing: 0.1em;
}

.section-subtitle {
  font-size: 16px;
  color: #555555;
  text-align: center;
  max-width: 720px;
  margin: 0 auto 50px;
  line-height: 1.9;
}

/* ==================================================
   Problem Section (02)
   ================================================== */
.problem {
  background: #f5f5f5;
}

.problem-title {
  text-align: center;
  font-size: 30px;
  font-weight: 800;
  line-height: 1.5;
  color: #1e2235;
  margin-bottom: 50px;
}

.problem-title .slashed {
  font-size: 18px;
  color: #ff4fa3;
  display: block;
  margin-bottom: 12px;
  font-weight: 700;
}

.problem-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 50px;
}

.problem-card {
  background: #ffffff;
  padding: 36px 24px;
  border-radius: 10px;
  text-align: center;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
}

.problem-card-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff0f6;
  border-radius: 50%;
}

.problem-card-icon img {
  width: 40px;
  height: 40px;
}

.problem-card-text {
  font-size: 15px;
  font-weight: 600;
  color: #333333;
  line-height: 1.7;
}

.problem-arrow {
  text-align: center;
  font-size: 32px;
  color: #ff4fa3;
  margin: 10px 0 20px;
  line-height: 1;
}

.problem-solution {
  text-align: center;
  font-size: 22px;
  font-weight: 800;
  color: #1e2235;
  padding: 20px 0;
}

.problem-solution strong {
  color: #ff4fa3;
}

/* ==================================================
   Service Section (03)
   ================================================== */
.service {
  background: #1e2235;
  color: #ffffff;
}

.service .section-title {
  color: #ffffff;
}

.service .section-title-en {
  color: #ff4fa3;
}

.service-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: #ffffff;
  color: #333333;
  padding: 40px 28px;
  border-radius: 10px;
  text-align: center;
}

.service-card-image {
  width: 100px;
  height: 100px;
  margin: 0 auto 20px;
}

.service-card-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.service-card-title {
  font-size: 22px;
  font-weight: 800;
  color: #1e2235;
  margin-bottom: 16px;
}

.service-card-text {
  font-size: 14px;
  color: #555555;
  line-height: 1.9;
  text-align: left;
}

/* ==================================================
   CTA Banner (04)
   ================================================== */
.cta-banner {
  background: #1e2235;
  padding: 60px 0 100px;
}

.cta-banner-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.cta-banner-card {
  background: #ffffff;
  padding: 40px 32px;
  border-radius: 10px;
  text-align: center;
}

.cta-banner-card h3 {
  font-size: 22px;
  font-weight: 800;
  color: #1e2235;
  margin-bottom: 14px;
}

.cta-banner-card p {
  font-size: 14px;
  color: #555555;
  line-height: 1.9;
  margin-bottom: 24px;
  text-align: left;
}

/* ==================================================
   Feature Section (05)
   ================================================== */
.feature {
  background: #ffffff;
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 40px;
  margin-top: 40px;
}

.feature-item {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 40px;
  align-items: center;
  background: #f5f5f5;
  padding: 36px;
  border-radius: 10px;
}

.feature-item:nth-child(even) {
  grid-template-columns: 1fr 260px;
}

.feature-item:nth-child(even) .feature-image {
  order: 2;
}

.feature-image img {
  width: 100%;
  max-width: 260px;
}

.feature-number {
  font-size: 14px;
  color: #ff4fa3;
  font-weight: 800;
  letter-spacing: 0.1em;
  margin-bottom: 10px;
}

.feature-title {
  font-size: 22px;
  font-weight: 800;
  color: #1e2235;
  margin-bottom: 14px;
  line-height: 1.5;
}

.feature-text {
  font-size: 15px;
  color: #555555;
  line-height: 1.9;
}

/* ==================================================
   Works Section (06)
   ================================================== */
.works {
  background: #ffffff;
}

.works-logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 40px;
  margin: 40px 0 50px;
}

.works-logo {
  font-size: 18px;
  font-weight: 700;
  color: #1e2235;
  padding: 20px 30px;
  background: #f5f5f5;
  border-radius: 8px;
  min-width: 180px;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
}

.works-logo img {
  max-height: 60px;
  width: auto;
  object-fit: contain;
}

.works-cta {
  text-align: center;
}

/* ==================================================
   Company Info (07)
   ================================================== */
.company-info {
  background: #f5f5f5;
}

.company-info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 30px;
}

.company-info-card {
  background: #ffffff;
  padding: 40px;
  border-radius: 10px;
  text-align: center;
  font-size: 18px;
  font-weight: 700;
  color: #1e2235;
  transition: transform 0.2s;
}

.company-info-card:hover {
  transform: translateY(-4px);
  opacity: 1;
}

/* ==================================================
   News Section (08)
   ================================================== */
.news-section {
  background: #ffffff;
  text-align: center;
}

.news-empty {
  font-size: 16px;
  color: #777777;
  padding: 40px 0;
}

.news-cta {
  margin-top: 20px;
}

/* ==================================================
   DL Contact Section (09)
   ================================================== */
.dl-contact {
  background: #ffffff;
}

.dl-contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 30px;
}

.dl-contact-card {
  background: #f5f5f5;
  padding: 40px 32px;
  border-radius: 10px;
  text-align: center;
}

.dl-contact-card h3 {
  font-size: 22px;
  font-weight: 800;
  color: #1e2235;
  margin-bottom: 20px;
}

/* ==================================================
   Page Header (sub-pages)
   ================================================== */
.page-header {
  background: #1e2235;
  color: #ffffff;
  padding: 100px 0 80px;
  text-align: center;
}

.page-header-label {
  font-size: 14px;
  letter-spacing: 0.2em;
  color: #ff4fa3;
  font-weight: 700;
  margin-bottom: 10px;
  display: block;
}

.page-header-title {
  font-size: 40px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 20px;
  line-height: 1.4;
}

.page-header-desc {
  font-size: 16px;
  color: #cccccc;
  max-width: 720px;
  margin: 0 auto 30px;
  line-height: 1.9;
}

.page-header-cta {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ==================================================
   Company Page
   ================================================== */
.mission {
  background: #ffffff;
  text-align: center;
}

.mission-label {
  font-size: 14px;
  color: #ff4fa3;
  font-weight: 700;
  letter-spacing: 0.2em;
  margin-bottom: 10px;
}

.mission-title {
  font-size: 34px;
  font-weight: 800;
  color: #1e2235;
  margin-bottom: 30px;
}

.mission-text {
  font-size: 22px;
  font-weight: 700;
  color: #1e2235;
  line-height: 1.8;
}

.representative {
  background: #f5f5f5;
}

.representative-inner {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 50px;
  max-width: 1000px;
  margin: 40px auto 0;
  align-items: start;
  background: #ffffff;
  padding: 50px;
  border-radius: 10px;
}

.representative-image img {
  width: 100%;
  max-width: 260px;
  border-radius: 10px;
}

.representative-role {
  font-size: 14px;
  color: #666666;
  margin-bottom: 8px;
}

.representative-name {
  font-size: 28px;
  font-weight: 800;
  color: #1e2235;
  margin-bottom: 24px;
}

.representative-bio {
  font-size: 14px;
  color: #555555;
  line-height: 2;
  white-space: pre-line;
}

.company-profile {
  background: #ffffff;
}

.company-profile-table {
  width: 100%;
  max-width: 900px;
  margin: 40px auto 0;
  border-collapse: collapse;
}

.company-profile-table th,
.company-profile-table td {
  padding: 20px 24px;
  text-align: left;
  border-bottom: 1px solid #e5e5e5;
  font-size: 15px;
  vertical-align: top;
}

.company-profile-table th {
  font-weight: 700;
  color: #1e2235;
  width: 160px;
  background: #f5f5f5;
}

.company-profile-table td {
  color: #555555;
  line-height: 1.9;
}

/* ==================================================
   News Page
   ================================================== */
.news-page {
  background: #ffffff;
  min-height: 300px;
  text-align: center;
}

.news-page-empty {
  font-size: 18px;
  color: #777777;
  padding: 60px 0;
}

/* ==================================================
   DL / Contact Forms
   ================================================== */
.form-page {
  background: #f5f5f5;
  padding: 80px 0;
}

.form-page-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 50px;
  max-width: 1100px;
  margin: 0 auto;
}

.form-left {
  background: #ffffff;
  padding: 40px 36px;
  border-radius: 10px;
}

.form-left h2 {
  font-size: 24px;
  font-weight: 800;
  color: #1e2235;
  margin-bottom: 20px;
}

.form-left p {
  font-size: 14px;
  color: #555555;
  line-height: 1.9;
  margin-bottom: 24px;
}

.form-left h3 {
  font-size: 16px;
  font-weight: 700;
  color: #1e2235;
  margin: 24px 0 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid #ff4fa3;
}

.form-left-logos {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.form-left-logos span {
  background: #f5f5f5;
  padding: 8px 14px;
  border-radius: 4px;
  font-size: 13px;
  font-weight: 600;
  color: #1e2235;
}

.form-left-dl-list {
  list-style: none;
  padding: 0;
}

.form-left-dl-list li {
  padding: 10px 0 10px 26px;
  position: relative;
  font-size: 14px;
  color: #333333;
  border-bottom: 1px dashed #e5e5e5;
}

.form-left-dl-list li::before {
  content: "📄";
  position: absolute;
  left: 0;
  top: 10px;
}

.form-right {
  background: #ffffff;
  padding: 40px 36px;
  border-radius: 10px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 700;
  color: #1e2235;
  margin-bottom: 8px;
}

.form-group label .required {
  color: #ff4fa3;
  font-size: 12px;
  margin-left: 6px;
}

.form-group label .optional {
  color: #999999;
  font-size: 12px;
  margin-left: 6px;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="tel"],
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid #dddddd;
  border-radius: 6px;
  font-size: 15px;
  font-family: inherit;
  background: #ffffff;
  color: #333333;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #ff4fa3;
}

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

.form-privacy {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin: 20px 0;
  font-size: 14px;
  color: #555555;
}

.form-privacy input[type="checkbox"] {
  margin-top: 4px;
  width: 16px;
  height: 16px;
  accent-color: #ff4fa3;
}

.form-privacy a {
  color: #ff4fa3;
  text-decoration: underline;
}

.form-submit {
  width: 100%;
  padding: 16px;
  font-size: 16px;
  font-weight: 700;
  background: #ff4fa3;
  color: #ffffff;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.2s;
}

.form-submit:hover {
  background: #e83a90;
}

.form-submit:disabled {
  background: #cccccc;
  cursor: not-allowed;
}

.form-thanks {
  display: none;
  background: #fff0f6;
  border: 1px solid #ff4fa3;
  color: #1e2235;
  padding: 24px;
  border-radius: 8px;
  text-align: center;
  font-weight: 600;
  margin-top: 20px;
}

.form-thanks.is-show {
  display: block;
}

/* ==================================================
   Privacy Policy
   ================================================== */
.privacy-body {
  background: #ffffff;
  padding: 80px 0;
}

.privacy-body-inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 24px;
}

.privacy-body h2 {
  font-size: 20px;
  font-weight: 800;
  color: #1e2235;
  margin: 36px 0 14px;
  padding-left: 14px;
  border-left: 4px solid #ff4fa3;
  line-height: 1.5;
}

.privacy-body p {
  font-size: 15px;
  color: #444444;
  line-height: 2;
  margin-bottom: 14px;
}

.privacy-body ul,
.privacy-body ol {
  padding-left: 24px;
  margin-bottom: 16px;
}

.privacy-body ul li,
.privacy-body ol li {
  font-size: 15px;
  color: #444444;
  line-height: 2;
  margin-bottom: 6px;
  list-style: disc;
}

.privacy-body ol li {
  list-style: decimal;
}

.privacy-contact-box {
  background: #f5f5f5;
  padding: 28px;
  border-radius: 8px;
  margin-top: 30px;
  font-size: 15px;
  line-height: 2;
  color: #333333;
}

/* ==================================================
   Footer
   ================================================== */
.footer {
  background: #1e2235;
  color: #ffffff;
  padding: 60px 0 30px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.footer-nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 30px;
  margin-bottom: 40px;
}

.footer-nav a {
  font-size: 14px;
  color: #ffffff;
}

.footer-logo {
  text-align: center;
  margin-bottom: 30px;
}

.footer-logo-tag {
  font-size: 12px;
  color: #aaaaaa;
  display: block;
  margin-bottom: 6px;
}

.footer-logo-mark {
  font-size: 22px;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: 0.02em;
}

.footer-logo-mark span {
  color: #ff4fa3;
}

.footer-copy {
  text-align: center;
  font-size: 12px;
  color: #888888;
  border-top: 1px solid #333851;
  padding-top: 24px;
}

/* ==================================================
   Responsive (SP: <=768px)
   ================================================== */
@media (max-width: 768px) {
  section {
    padding: 60px 0;
  }

  .hamburger {
    display: block;
  }

  .header-nav {
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    background: #ffffff;
    padding: 24px;
    flex-direction: column;
    align-items: stretch;
    gap: 20px;
    border-top: 1px solid #eeeeee;
    transform: translateY(-200%);
    transition: transform 0.3s;
    max-height: calc(100vh - 72px);
    overflow-y: auto;
  }

  .header-nav.is-open {
    transform: translateY(0);
  }

  .header-nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 18px;
    width: 100%;
  }

  .header-nav-list a {
    padding: 8px 0;
    border-bottom: 1px solid #eeeeee;
    display: block;
  }

  .header-cta {
    flex-direction: column;
    width: 100%;
    gap: 12px;
  }

  .header-cta .btn {
    width: 100%;
  }

  .header-logo-tag {
    display: none;
  }

  .hero {
    padding: 40px 0 60px;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 30px;
    text-align: center;
  }

  .hero-title {
    font-size: 28px;
  }

  .hero-sub {
    font-size: 15px;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-image img {
    width: 240px;
  }

  .section-title {
    font-size: 24px;
  }

  .problem-title {
    font-size: 22px;
  }

  .problem-cards,
  .service-cards,
  .cta-banner-grid,
  .company-info-grid,
  .dl-contact-grid {
    grid-template-columns: 1fr;
  }

  .feature-item,
  .feature-item:nth-child(even) {
    grid-template-columns: 1fr;
    padding: 30px 24px;
    text-align: center;
  }

  .feature-item:nth-child(even) .feature-image {
    order: 0;
  }

  .feature-image img {
    max-width: 200px;
    margin: 0 auto;
  }

  .page-header {
    padding: 60px 0 50px;
  }

  .page-header-title {
    font-size: 28px;
  }

  .representative-inner {
    grid-template-columns: 1fr;
    padding: 30px 24px;
    gap: 24px;
    text-align: center;
  }

  .representative-image {
    margin: 0 auto;
  }

  .representative-bio {
    text-align: left;
  }

  .company-profile-table th,
  .company-profile-table td {
    display: block;
    width: 100%;
    padding: 12px 16px;
  }

  .company-profile-table th {
    border-bottom: none;
    padding-bottom: 4px;
  }

  .form-page-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .form-left,
  .form-right {
    padding: 28px 24px;
  }

  .mission-title {
    font-size: 26px;
  }

  .mission-text {
    font-size: 18px;
  }

  .works-logo {
    min-width: 140px;
    font-size: 15px;
    padding: 16px 20px;
  }
}