@charset "utf-8";


/* 全体のフォント設定  */
body {
  font-family: 'Helvetica Neue', 'Arial', 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', 'BIZ UDPGothic', 'Meiryo', sans-serif;
  font-size: 18px;
  line-height: 1.8;
  color: #1a252f;
  font-weight: 600;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 800;
  color: #0f1419;
  letter-spacing: 0.02em;
  margin-bottom: 1.5rem;
}

h1 {
  font-size: 3.5rem;
  line-height: 1.2;
}
h2 {
  font-size: 3rem;
  line-height: 1.25;
}
h3 {
  font-size: 2.5rem;
  line-height: 1.3;
}

h4 {
  font-size: 2rem;
  line-height: 1.35;
}

h5 {
  font-size: 1.7rem;
  line-height: 1.4;
}

h6 {
  font-size: 1.4rem;
  line-height: 1.45;
}
p {
  font-size: 1.3rem;
  line-height: 1.9;
  color: #2c3e50;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

a {
  color: #2980b9;
  font-weight: 700;
  font-size: 1.1rem;
  text-decoration: none;
  transition: all 0.3s ease;
}

a:hover {
  color: #1f5582;
  text-decoration: none;
  transform: translateY(-1px);
}

/* ボタンテキストの強化 */
.btn {
  font-size: 1.2rem;
  font-weight: 700;
  padding: 12px 30px;
  letter-spacing: 0.05em;
}

/* カードタイトルの強化 */
.card-title {
  font-size: 1.6rem;
  font-weight: 700;
  color: #1a252f;
  margin-bottom: 1rem;
}

/* カードテキストの強化 */
.card-text {
  font-size: 1.2rem;
  font-weight: 600;
  color: #2c3e50;
  line-height: 1.8;
}

/* リストアイテムの強化 */
li {
  font-size: 1.2rem;
  font-weight: 600;
  color: #2c3e50;
  margin-bottom: 0.8rem;
  line-height: 1.8;
}

/* 小さいテキストも読みやすく */
small,
.small {
  font-size: 1rem;
  font-weight: 600;
}


/* 固定ヘッダのページ内リンクのズレ対応 */
#introduced,
#step,
#new-feature,
#section-shiru,
#section-tsunagaru,
#section-fukameru {
  margin-top: -100px;
  padding-top: 100px;
}

.btndisabled {
  pointer-events: none;
}

.introduced-box {
  position: relative;
}

.svg-text {
  position: absolute;
  display: inline-block;
  align-items: center;
  align-content: center;
  flex-wrap: wrap;
  color: white;
  font-size: 24px;
  font-weight: bold;
  background-color: #FF007F;
  border-radius: 50%;
  top: 25%;
  left: 37%;
  transform: translate(-50%, -50%);
  margin-top: 20px;
  padding: 30px;
}


.svg-text>.circle-txt1 {
  display: block;
  width: 100%;
  margin-top: 15px;
  line-height: 1;
}

.svg-text>.circle-txt2 {
  display: block;
  width: 100%;
  margin-top: 5px;
}


.logo {
  position: fixed;
  top: 20px;
  left: 20px;
  width: 100px;
  z-index: 1000;
}

.blueline {
  text-decoration-color: RGBA(52, 203, 196, 0.5);
  text-decoration-line: underline;
  text-decoration-thickness: 10px;
  text-underline-offset: -2px;
  text-decoration-skip-ink: none;
  font-size: 1.8rem;
  font-weight: 700;
}

.pinkline {
  text-decoration-color: RGBA(243, 140, 208, 0.5);
  text-decoration-line: underline;
  text-decoration-thickness: 10px;
  text-underline-offset: -2px;
  text-decoration-skip-ink: none;
  font-size: 1.8rem;
  font-weight: 700;
}

.yellowline {
  text-decoration-color: RGBA(241, 150, 49, 0.5);
  text-decoration-line: underline;
  text-decoration-thickness: 10px;
  text-underline-offset: -2px;
  text-decoration-skip-ink: none;
  font-size: 1.8rem;
  font-weight: 700;
}


.contact-detail {
  text-align: center;
  margin: 20px 0;
}

.btn-contact {
  margin-bottom: 30px;
}

.btn-contact a {
  background-color: #007bff;
  color: white;
  padding: 18px 35px;
  text-decoration: none;
  border-radius: 8px;
  font-weight: 700;
  font-size: 1.1rem;
  display: inline-block;
}

/* SNSアイコンの中央寄せとレスポンシブ対応  */
.sns-icons {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 25px;
  flex-wrap: wrap;
  margin-top: 20px;
}

.sns-icons a {
  display: inline-block;
  transition: transform 0.3s ease;
}

.sns-icons a:hover {
  transform: scale(1.1);
}

.sns-icons img {
  width: 60px;
  height: 60px;
  max-width: 100%;
  height: auto;
  border-radius: 12px;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
  body {
    font-size: 16px;
  }
  h1 {
    font-size: 2.5rem;
  }
  h2 {
    font-size: 2.2rem;
  }
  h3 {
    font-size: 1.8rem;
  }
  h4 {
    font-size: 1.5rem;
  }
  h5 {
    font-size: 1.3rem;
  }
  h6 {
    font-size: 1.1rem;
  }
  p {
    font-size: 1.1rem;
  }

  .card-title {
    font-size: 1.4rem;
  }

  .card-text {
    font-size: 1rem;
  }

  li {
    font-size: 1rem;
  }

  .sns-icons {
    gap: 20px;
  }

  .sns-icons img {
    width: 50px;
    height: 50px;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 15px;
  }

  h1 {
    font-size: 2rem;
  }
  h2 {
    font-size: 1.8rem;
  }
  h3 {
    font-size: 1.5rem;
  }
  h4 {
    font-size: 1.3rem;
  }
  h5 {
    font-size: 1.1rem;
  }
  h6 {
    font-size: 1rem;
  }

  p {
    font-size: 1rem;
  }

  .card-title {
    font-size: 1.2rem;
  }

  .card-text {
    font-size: 0.95rem;
  }

  li {
    font-size: 0.95rem;
  }

  .sns-icons {
    gap: 15px;
  }

  .sns-icons img {
    width: 45px;
    height: 45px;
  }
}


.posta-family__feature-lead {
  background: linear-gradient(135deg, #f8fafb 0%, #f0f4f7 100%);
  padding: 60px 0;
  margin: 40px 0;
  border-radius: 20px;
}

.posta-family__feature-lead-content {
  display: block;
  padding: 30px 20px;
  text-decoration: none;
  border-radius: 15px;
  transition: all 0.3s ease;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.9);
  margin-bottom: 20px;
  height: 100%;
  position: relative;
  overflow: hidden;
}

/* 知る - ブランド青系（blueline統一） */
.posta-family__feature-lead-content--1 {
  background: linear-gradient(135deg, rgba(52, 203, 196, 0.08) 0%, rgba(52, 203, 196, 0.03) 100%);
  border-left: 5px solid rgba(52, 203, 196, 0.8);
}

.posta-family__feature-lead-content--1:hover {
  background: linear-gradient(135deg, rgba(52, 203, 196, 0.12) 0%, rgba(52, 203, 196, 0.06) 100%);
  transform: translateY(-8px);
  box-shadow: 0 12px 30px rgba(52, 203, 196, 0.2);
  border-left: 5px solid rgba(52, 203, 196, 1);
}

/* 繋がる - ブランドピンク系（pinkline統一） */
.posta-family__feature-lead-content--2 {
  background: linear-gradient(135deg, rgba(243, 140, 208, 0.08) 0%, rgba(243, 140, 208, 0.03) 100%);
  border-left: 5px solid rgba(243, 140, 208, 0.8);
}

.posta-family__feature-lead-content--2:hover {
  background: linear-gradient(135deg, rgba(243, 140, 208, 0.12) 0%, rgba(243, 140, 208, 0.06) 100%);
  transform: translateY(-8px);
  box-shadow: 0 12px 30px rgba(243, 140, 208, 0.2);
  border-left: 5px solid rgba(243, 140, 208, 1);
}

/* 深める - ブランドオレンジ系（yellowline統一） */
.posta-family__feature-lead-content--3 {
  background: linear-gradient(135deg, rgba(241, 150, 49, 0.08) 0%, rgba(241, 150, 49, 0.03) 100%);
  border-left: 5px solid rgba(241, 150, 49, 0.8);
}

.posta-family__feature-lead-content--3:hover {
  background: linear-gradient(135deg, rgba(241, 150, 49, 0.12) 0%, rgba(241, 150, 49, 0.06) 100%);
  transform: translateY(-8px);
  box-shadow: 0 12px 30px rgba(241, 150, 49, 0.2);
  border-left: 5px solid rgba(241, 150, 49, 1);
}

/* コンセプト見出しのスタイル調整 */
.posta-family__feature-lead-heading {
  color: #333;
  margin-bottom: 50px;
  font-size: 3rem;
  font-weight: 700;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
  letter-spacing: 0.05em;
}

.posta-family__feature-lead-heading-sub {
  color: #666;
  font-size: 0.9em;
  font-weight: 400;
}

/* レスポンシブ対応でタイトルサイズ調整 */
@media (max-width: 768px) {
  .posta-family__feature-lead-heading {
    font-size: 2.2rem;
  }
}

@media (max-width: 480px) {
  .posta-family__feature-lead-heading {
    font-size: 1.8rem;
  }
}

/* コンテンツ内のテキストスタイル */
.posta-family__feature-lead-content-heading {
  color: #333;
  margin-bottom: 15px;
  font-size: 1.2em;
}

.posta-family__feature-lead-content-text {
  color: #555;
  line-height: 1.6;
  font-size: 0.95em;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
  .posta-family__feature-lead {
    padding: 40px 15px;
  }

  .posta-family__feature-lead-content {
    padding: 25px 15px;
    margin-bottom: 25px;
  }
}

/* アニメーション関連のスタイル */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease-out;
}

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

.delay-300 {
  transition-delay: 0.3s;
}

/* メインタイトルの装飾 */
.main-title-wrapper {
  position: relative;
  margin-bottom: 20px;
}

.main-title {
  position: relative;
  z-index: 2;
}

.title-background {
  position: absolute;
  top: -10px;
  left: -20px;
  right: -20px;
  bottom: -10px;
  background: rgba(248, 250, 252, 0.1);
  border-radius: 20px;
  z-index: 1;
  opacity: 0;
  animation: titleBackgroundFade 1s ease-out 0.5s forwards;
}

.highlight-text {
  color: #2c3e50;
  position: relative;
}

/* 説明文の装飾 */
.description-wrapper {
  position: relative;
}

.description-content {
  position: relative;
}

.main-description {
  position: relative;
  overflow: hidden;
}

.main-description::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(248, 250, 252, 0.1);
  opacity: 0;
  animation: descriptionGlow 1s ease-out 0.8s forwards;
}

.description-icon {
  position: absolute;
  top: 15px;
  right: 15px;
  font-size: 1.5rem;
  opacity: 0;
  animation: iconFloat 1s ease-out 1.2s forwards;
}

/* アニメーション定義 */
@keyframes titleBackgroundFade {
  to {
    opacity: 1;
  }
}

@keyframes descriptionGlow {
  to {
    opacity: 1;
  }
}

@keyframes iconFloat {
  0% {
    opacity: 0;
    transform: translateY(10px);
  }

  100% {
    opacity: 0.7;
    transform: translateY(0);
  }
}

/* レスポンシブ対応の調整 */
@media (max-width: 768px) {
  .main-title {
    font-size: 2.8rem !important;
  }

  .main-description {
    padding: 20px !important;
    font-size: 1.1rem !important;
  }

  .title-background {
    left: -10px;
    right: -10px;
  }
}

@media (max-width: 480px) {
  .main-title {
    font-size: 2.2rem !important;
  }

  .main-description {
    padding: 15px !important;
    font-size: 1rem !important;
  }
}

/* アニメーション効果 */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

.delay-300 {
  transition-delay: 0.3s;
}

/* 背景装飾要素 */
.background-decorations {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
}

/* 円形要素 */
.bg-circle {
  position: absolute;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(52, 152, 219, 0.1), rgba(46, 204, 113, 0.1));
  animation: float 6s ease-in-out infinite;
}

.bg-circle-1 {
  width: 120px;
  height: 120px;
  top: 10%;
  left: 5%;
  animation-delay: 0s;
}

.bg-circle-2 {
  width: 80px;
  height: 80px;
  top: 70%;
  right: 10%;
  animation-delay: 2s;
}

.bg-circle-3 {
  width: 60px;
  height: 60px;
  top: 30%;
  right: 20%;
  animation-delay: 4s;
}

/* 三角形要素 */
.bg-triangle {
  position: absolute;
  width: 0;
  height: 0;
  animation: rotate 8s linear infinite;
}

.bg-triangle-1 {
  border-left: 30px solid transparent;
  border-right: 30px solid transparent;
  border-bottom: 52px solid rgba(155, 89, 182, 0.1);
  top: 20%;
  right: 5%;
  animation-delay: 1s;
}

.bg-triangle-2 {
  border-left: 20px solid transparent;
  border-right: 20px solid transparent;
  border-bottom: 35px solid rgba(230, 126, 34, 0.1);
  bottom: 20%;
  left: 10%;
  animation-delay: 3s;
}

/* 四角形要素 */
.bg-square {
  position: absolute;
  background: linear-gradient(45deg, rgba(231, 76, 60, 0.08), rgba(241, 196, 15, 0.08));
  animation: pulse 4s ease-in-out infinite;
}

.bg-square-1 {
  width: 40px;
  height: 40px;
  top: 60%;
  left: 20%;
  transform: rotate(45deg);
  animation-delay: 0.5s;
}

.bg-square-2 {
  width: 25px;
  height: 25px;
  top: 15%;
  left: 70%;
  transform: rotate(30deg);
  animation-delay: 2.5s;
}

/* 波線要素 */
.bg-wave {
  position: absolute;
  width: 100px;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(52, 152, 219, 0.3), transparent);
  animation: wave 5s ease-in-out infinite;
}

.bg-wave-1 {
  top: 40%;
  left: 15%;
  animation-delay: 1.5s;
}

.bg-wave-2 {
  bottom: 30%;
  right: 15%;
  transform: rotate(45deg);
  animation-delay: 3.5s;
}

/* キーフレームアニメーション */
@keyframes float {

  0%,
  100% {
    transform: translateY(0px) scale(1);
  }

  50% {
    transform: translateY(-20px) scale(1.05);
  }
}

@keyframes rotate {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}

@keyframes pulse {

  0%,
  100% {
    transform: scale(1) rotate(45deg);
    opacity: 0.6;
  }

  50% {
    transform: scale(1.2) rotate(45deg);
    opacity: 0.8;
  }
}

@keyframes wave {

  0%,
  100% {
    opacity: 0.3;
    transform: scaleX(1);
  }

  50% {
    opacity: 0.7;
    transform: scaleX(1.5);
  }
}

/* レスポンシブ対応 */
@media only screen and (max-width: 768px) {
  .bg-circle-1 {
    width: 80px;
    height: 80px;
  }

  .bg-circle-2 {
    width: 60px;
    height: 60px;
  }

  .bg-circle-3 {
    width: 40px;
    height: 40px;
  }

  .bg-triangle-1 {
    border-left: 20px solid transparent;
    border-right: 20px solid transparent;
    border-bottom: 35px solid rgba(155, 89, 182, 0.1);
  }

  .bg-triangle-2 {
    border-left: 15px solid transparent;
    border-right: 15px solid transparent;
    border-bottom: 26px solid rgba(230, 126, 34, 0.1);
  }

  .bg-square-1 {
    width: 30px;
    height: 30px;
  }

  .bg-square-2 {
    width: 20px;
    height: 20px;
  }

  .bg-wave {
    width: 60px;
  }
}

/* フッタースタイル */
.custom-footer {
  background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
  color: #ffffff;
  padding: 40px 0 20px 0;
  margin-top: 60px;
  border-top: 4px solid #3498db;
  position: relative;
  overflow: hidden;
}

.custom-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 20"><defs><linearGradient id="grad" x1="0%" y1="0%" x2="100%" y2="0%"><stop offset="0%" style="stop-color:rgba(255,255,255,0.05);stop-opacity:1" /><stop offset="100%" style="stop-color:rgba(255,255,255,0);stop-opacity:1" /></linearGradient></defs><path d="M0,10 Q25,0 50,10 T100,10 L100,20 L0,20 Z" fill="url(%23grad)"/></svg>') repeat-x;
  opacity: 0.3;
  animation: wave-flow 10s linear infinite;
}

@keyframes wave-flow {
  0% {
    transform: translateX(-100px);
  }

  100% {
    transform: translateX(100px);
  }
}

.footer-content {
  position: relative;
  z-index: 2;
}

.footer-company-link {
  color: #ecf0f1;
  text-decoration: none;
  font-size: 1rem;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: 25px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: all 0.3s ease;
  display: inline-block;
  margin-bottom: 15px;
  backdrop-filter: blur(10px);
}

.footer-company-link:hover {
  color: #ffffff;
  background: rgba(52, 152, 219, 0.3);
  border-color: rgba(52, 152, 219, 0.5);
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(52, 152, 219, 0.3);
  text-decoration: none;
}

.footer-copyright {
  color: #bdc3c7;
  font-size: 0.9rem;
  margin: 0;
  line-height: 1.6;
  opacity: 0.8;
}

.footer-divider {
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, transparent, #3498db, transparent);
  margin: 20px auto;
  border-radius: 1px;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
  .custom-footer {
    padding: 30px 0 15px 0;
    text-align: center;
  }

  .footer-company-link {
    font-size: 0.9rem;
    padding: 8px 16px;
    margin-bottom: 12px;
    display: block;
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
  }

  .footer-copyright {
    font-size: 0.8rem;
    padding: 0 20px;
    text-align: center;
  }

  .footer-divider {
    width: 40px;
    margin: 15px auto;
  }
}

@media (max-width: 480px) {
  .custom-footer {
    padding: 25px 0 12px 0;
  }

  .footer-company-link {
    font-size: 0.85rem;
    padding: 6px 14px;
  }

  .footer-copyright {
    font-size: 0.75rem;
    line-height: 1.5;
    padding: 0 15px;
  }
}

/* トップに戻るボタン */
.back-to-top {
  position: fixed;
  bottom: 30px;
  left: 30px;
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
  color: #ffffff;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
  transition: all 0.3s ease;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  z-index: 1000;
  backdrop-filter: blur(10px);
  border: 2px solid rgba(255, 255, 255, 0.2);
}

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

.back-to-top:hover {
  background: linear-gradient(135deg, #2980b9 0%, #1f4e79 100%);
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(52, 152, 219, 0.4);
  border-color: rgba(255, 255, 255, 0.4);
}

.back-to-top:active {
  transform: translateY(-1px);
  box-shadow: 0 3px 10px rgba(52, 152, 219, 0.3);
}

/* アイコンの回転アニメーション */
.back-to-top i {
  transition: transform 0.3s ease;
}

.back-to-top:hover i {
  transform: translateY(-2px);
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
  .back-to-top {
    bottom: 20px;
    left: 20px;
    width: 45px;
    height: 45px;
    font-size: 18px;
  }
}

@media (max-width: 480px) {
  .back-to-top {
    bottom: 15px;
    left: 15px;
    width: 40px;
    height: 40px;
    font-size: 16px;
  }
}

/* ハンバーガーメニュー - 常に表示 */
.hamburger-menu {
  position: fixed;
  top: 15px;
  right: 20px;
  z-index: 1001;
  cursor: pointer;
  display: block;
  background: transparent;
  border: none;
  padding: 8px;
  border-radius: 6px;
  transition: all 0.3s ease;
}

.hamburger-menu:hover {
  background: rgba(44, 62, 80, 0.1);
  border: 1px solid rgba(44, 62, 80, 0.2);
}

.hamburger-menu:focus {
  outline: none;
  background: rgba(44, 62, 80, 0.1);
  border: 1px solid rgba(44, 62, 80, 0.3);
}

.hamburger-icon {
  width: 30px;
  height: 25px;
  position: relative;
  transform: rotate(0deg);
  transition: 0.3s ease-in-out;
}

.hamburger-icon span {
  display: block;
  position: absolute;
  height: 3px;
  width: 100%;
  background: #2c3e50;
  border-radius: 2px;
  opacity: 1;
  left: 0;
  transform: rotate(0deg);
  transition: 0.3s ease-in-out;
}

.hamburger-icon span:nth-child(1) {
  top: 0px;
}

.hamburger-icon span:nth-child(2) {
  top: 10px;
}

.hamburger-icon span:nth-child(3) {
  top: 20px;
}

.hamburger-menu.active .hamburger-icon span:nth-child(1) {
  top: 10px;
  transform: rotate(135deg);
}

.hamburger-menu.active .hamburger-icon span:nth-child(2) {
  opacity: 0;
  left: -60px;
}

.hamburger-menu.active .hamburger-icon span:nth-child(3) {
  top: 10px;
  transform: rotate(-135deg);
}

/* ヘッダーが伸びるメニュー */
.header-menu-dropdown {
  position: fixed;
  top: 70px;
  /* ヘッダーの下 */
  left: 0;
  right: 0;
  background: linear-gradient(135deg, #ffffff 0%, #f8fafb 100%);
  border-bottom: 3px solid #3498db;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  z-index: 999;
  transform: translateY(-100%);
  transition: transform 0.3s ease-out;
  backdrop-filter: blur(10px);
  visibility: hidden;
  opacity: 0;
}

.header-menu-dropdown.active {
  transform: translateY(0);
  visibility: visible;
  opacity: 1;
}

.header-menu-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 30px 20px;
}

.menu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
  margin-bottom: 20px;
}

.menu-section {
  background: rgba(255, 255, 255, 0.8);
  border-radius: 12px;
  padding: 20px;
  border-left: 4px solid #3498db;
  transition: all 0.3s ease;
}

.menu-section:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(52, 152, 219, 0.15);
  border-left-color: #2980b9;
}

.menu-section-title {
  color: #2c3e50;
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 15px;
  display: flex;
  align-items: center;
}

.menu-section-title::before {
  content: '●';
  color: #3498db;
  margin-right: 8px;
  font-size: 0.8rem;
}

.menu-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.menu-links li {
  margin-bottom: 8px;
}

.menu-links a {
  color: #5a6c7d;
  text-decoration: none;
  font-size: 0.95rem;
  padding: 8px 12px;
  border-radius: 6px;
  display: block;
  transition: all 0.3s ease;
  position: relative;
}

.menu-links a:hover {
  background: rgba(52, 152, 219, 0.1);
  color: #2980b9;
  transform: translateX(5px);
  text-decoration: none;
}

.menu-close-area {
  text-align: center;
  padding-top: 15px;
  border-top: 1px solid rgba(52, 152, 219, 0.2);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.header-menu-dropdown.active .menu-close-area {
  opacity: 1;
  visibility: visible;
}

.menu-close-button {
  background: #3498db;
  color: white;
  border: none;
  padding: 8px 20px;
  border-radius: 20px;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

.menu-close-button:hover {
  background: #2980b9;
  transform: translateY(-1px);
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
  .hamburger-menu {
    top: 12px;
    right: 15px;
    padding: 6px;
  }

  .header-menu-dropdown {
    top: 65px;
  }

  .menu-grid {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .menu-section {
    padding: 15px;
  }

  .header-menu-content {
    padding: 20px 15px;
  }
}

@media (max-width: 480px) {
  .hamburger-menu {
    top: 10px;
    right: 12px;
    padding: 5px;
  }

  .hamburger-icon {
    width: 25px;
    height: 20px;
  }

  .hamburger-icon span {
    height: 2px;
  }

  .hamburger-icon span:nth-child(2) {
    top: 8px;
  }

  .hamburger-icon span:nth-child(3) {
    top: 16px;
  }

  .hamburger-menu.active .hamburger-icon span:nth-child(1) {
    top: 8px;
  }

  .hamburger-menu.active .hamburger-icon span:nth-child(3) {
    top: 8px;
  }

  .header-menu-dropdown {
    top: 60px;
  }

  .header-menu-content {
    padding: 15px 10px;
  }
}

/* 追加分 */
/* 全体背景の改善 - Post@netブランドカラーを使用 */
body {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 50%, #f1f5f9 100%);
    min-height: 100vh;
    position: relative;
}

/* セクション別背景デザイン */
.hero-section {
    background: linear-gradient(135deg, rgba(66, 133, 244, 0.03) 0%, rgba(255, 255, 255, 0.95) 50%, rgba(241, 245, 249, 0.8) 100%) !important;
    position: relative;
}

.container-wrapper {
    position: relative;
    background: transparent;
}

.container-wrapper:nth-child(even) {
    background: linear-gradient(135deg, rgba(248, 250, 252, 0.6) 0%, rgba(241, 245, 249, 0.4) 100%);
}


/* SNSセクションの強調デザイン */
#sns {
    background: linear-gradient(135deg, rgba(66, 133, 244, 0.05) 0%, rgba(255, 255, 255, 0.95) 100%);
    border-radius: 20px;
    margin: 60px 0;
    position: relative;
    overflow: hidden;
}

#sns .container {
    background: rgba(255, 255, 255, 0.8);
    border-radius: 15px;
    padding: 40px 30px;
    border: 2px solid rgba(52, 152, 219, 0.15);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    backdrop-filter: blur(10px);
    position: relative;
    z-index: 2;
}



#sns h3::before {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, #3498db, #52c0f0);
    border-radius: 2px;
}

/* SNSアイコンエリアの強調 */
.sns-icons-wrapper {
    background: rgba(248, 250, 252, 0.6);
    border-radius: 12px;
    padding: 25px;
    margin-top: 20px;
    border: 1px solid rgba(52, 152, 219, 0.1);
}

/* SNSアイコンの改善 */
#sns .sns_icon {
    width: 70px;
    height: 70px;
    border-radius: 15px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    margin: 0 15px;
}

#sns .sns_icon:hover {
    transform: translateY(-5px) scale(1.1);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}



/* レスポンシブ対応 */
@media (max-width: 768px) {
    #sns .container {
        padding: 30px 20px;
        margin: 0 15px;
    }
    
    #sns h3 {
        font-size: 2rem;
        margin-bottom: 25px;
    }
    
    #sns h3::before {
        width: 60px;
        height: 3px;
    }
    
    .sns-icons-wrapper {
        padding: 20px;
    }
    
    #sns .sns_icon {
        width: 60px;
        height: 60px;
        margin: 0 10px;
    }
    
    #sns img[src*="triangle"] {
        width: 25px;
        margin: 0 15px;
    }
}

@media (max-width: 480px) {
    #sns {
        margin: 40px 10px;
    }
    
    #sns .container {
        padding: 25px 15px;
        margin: 0 10px;
    }
    
    #sns h3 {
        font-size: 1.8rem;
        margin-bottom: 20px;
    }
    
    #sns h3::before {
        width: 50px;
        height: 3px;
    }
    
    .sns-icons-wrapper {
        padding: 15px;
    }
    
    #sns .sns_icon {
        width: 55px;
        height: 55px;
        margin: 0 8px;
    }
    
    #sns img[src*="triangle"] {
        width: 20px;
        margin: 0 10px;
    }
}

/* SNSセクション専用の背景装飾 */
#sns::before {
    content: '';
    position: absolute;
    top: -20px;
    left: -20px;
    right: -20px;
    bottom: -20px;
    background: linear-gradient(135deg, 
        rgba(52, 152, 219, 0.03) 0%, 
        rgba(46, 204, 113, 0.02) 50%, 
        rgba(155, 89, 182, 0.03) 100%);
    border-radius: 25px;
    z-index: 1;
}

/* アニメーション効果 */
#sns .container {
    animation: snsContainerFloat 6s ease-in-out infinite;
}

@keyframes snsContainerFloat {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-3px);
    }
}

/* ホバー時の全体的な効果 */
#sns:hover .container {
    border-color: rgba(52, 152, 219, 0.3);
    box-shadow: 0 12px 40px rgba(52, 152, 219, 0.15);
}

#sns:hover h3::before {
    background: linear-gradient(90deg, #2980b9, #3498db, #52c0f0);
    width: 90px;
}

/* PC用画像 - 左の2つの角を丸く */
.-pc {
    border-radius: 20px 0 0 20px;
    /* top-left, top-right, bottom-right, bottom-left */
}

/* SP用画像 - 上の2つの角を丸く */
.-sp {
    border-radius: 20px 20px 0 0 ;
    /* top-left, top-right, bottom-right, bottom-left */
}