/* ========================================
   KABE LABO — 内装リフォーム業 サービスサイト
   カラースキーム:
     メイン: #4A6274（スレートブルー）
     サブ: #34495E（ディープスレート）
     ベース: #FAFAF8（オフホワイト）
     サブ背景: #F2F0ED（ライトウォームグレー）
     テキスト: #2C2C2C（チャコール）
     テキスト補助: #757575（ミディアムグレー）
     フッター: #2C2C2C
     LINE CTA: #06C755
   ======================================== */

/* ----------------------------------------
   リセットCSS + ベーススタイル
   ---------------------------------------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: "Noto Sans JP", sans-serif;
  font-weight: 400;
  color: #2C2C2C;
  line-height: 1.8;
  background: #FAFAF8;
  overflow-x: hidden;
}

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

a {
  text-decoration: none;
  color: inherit;
}

ul,
ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ----------------------------------------
   共通: セクションタイトル
   ---------------------------------------- */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-label {
  display: block;
  font-family: "Cormorant Garamond", serif;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: #4A6274;
  margin-bottom: 8px;
}

.section-label-white {
  color: rgba(255, 255, 255, 0.7);
}

.section-title {
  font-family: "Noto Serif JP", serif;
  font-weight: 500;
  font-size: 30px;
  color: #2C2C2C;
  line-height: 1.5;
}

.section-title-white {
  color: #fff;
}

.section-line {
  width: 40px;
  height: 2px;
  background: #4A6274;
  margin: 16px auto 0;
}

.section-line-white {
  background: rgba(255, 255, 255, 0.5);
}

.section-sub {
  text-align: center;
  color: #757575;
  font-size: 15px;
  margin-top: -32px;
  margin-bottom: 48px;
}

/* ----------------------------------------
   セクション1: ヘッダー
   ---------------------------------------- */
.header {
  background: rgba(250, 250, 248, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  border-bottom: 1px solid #E8E6E3;
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo a {
  display: flex;
  flex-direction: column;
}

.logo-text {
  font-family: "Cormorant Garamond", serif;
  font-weight: 600;
  font-size: 24px;
  color: #4A6274;
  letter-spacing: 2px;
  line-height: 1.2;
}

.logo-sub {
  font-size: 11px;
  color: #757575;
  letter-spacing: 0.5px;
}

.logo-notice {
  font-size: 10px;
  color: #757575;
  margin-left: 12px;
  white-space: nowrap;
}

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

.header-nav a {
  font-size: 14px;
  font-weight: 500;
  color: #2C2C2C;
  transition: color 0.3s;
}

.header-nav a:hover {
  color: #4A6274;
}

.header-btn {
  display: inline-block;
  background: #4A6274;
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  padding: 10px 24px;
  border-radius: 4px;
  transition: background 0.3s, transform 0.3s, box-shadow 0.3s;
}

.header-btn:hover {
  background: #34495E;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(74, 98, 116, 0.3);
}

/* ハンバーガーメニュー */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: #2C2C2C;
  transition: transform 0.3s, opacity 0.3s;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ----------------------------------------
   セクション2: ヒーロー（ファーストビュー）
   ---------------------------------------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    170deg,
    rgba(44, 44, 44, 0.4) 0%,
    rgba(74, 98, 116, 0.2) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: #fff;
  padding: 120px 24px 80px;
  max-width: 780px;
}

.hero-demo-badge {
  display: inline-block;
  background: rgba(74, 98, 116, 0.8);
  color: #fff;
  font-family: "Cormorant Garamond", serif;
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 2px;
  padding: 6px 16px;
  border-radius: 4px;
  margin-bottom: 24px;
}

.hero-content h1 {
  font-family: "Noto Serif JP", serif;
  font-weight: 500;
  font-size: 42px;
  line-height: 1.5;
  margin-bottom: 24px;
  letter-spacing: 1px;
}

.hero-content p {
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 40px;
  opacity: 0.92;
}

.hero-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.btn-primary-light {
  display: inline-block;
  background: #fff;
  color: #4A6274;
  font-size: 16px;
  font-weight: 500;
  padding: 16px 44px;
  border-radius: 4px;
  transition: transform 0.3s, box-shadow 0.3s;
}

.btn-primary-light:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.2);
}

.hero-link {
  color: #fff;
  font-size: 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.6);
  padding-bottom: 2px;
  transition: opacity 0.3s;
}

.hero-link:hover {
  opacity: 0.75;
}

.portfolio-notice {
  font-size: 11px;
  opacity: 0.6;
  padding: 10px 20px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 6px;
  display: inline-block;
  margin-top: 40px;
}

/* ----------------------------------------
   セクション3: 悩み共感セクション
   ---------------------------------------- */
.concerns {
  background: #F2F0ED;
  padding: 110px 0;
}

.concerns-grid {
  display: flex;
  align-items: center;
  gap: 60px;
}

.concerns-text {
  flex: 1;
}

.concerns .section-header {
  text-align: left;
  margin-bottom: 40px;
}

.concerns .section-line {
  margin: 16px 0 0;
}

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

.concerns-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  line-height: 1.7;
}

.concerns-list li::before {
  content: "";
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #4A6274;
  margin-top: 4px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
  background-size: 12px 12px;
  background-position: center;
  background-repeat: no-repeat;
}

.concerns-image {
  flex: 1;
  border-radius: 12px;
  overflow: hidden;
}

.concerns-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 12px;
}

.concerns-message {
  text-align: center;
  margin-top: 56px;
  font-size: 15px;
  font-weight: 500;
  color: #4A6274;
  line-height: 1.8;
}

/* ----------------------------------------
   セクション4: サービス概要
   ---------------------------------------- */
.service {
  background: #FAFAF8;
  padding: 110px 0;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.service-card {
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
  transition: transform 0.3s, box-shadow 0.3s;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.service-card .card-image {
  overflow: hidden;
  border-radius: 8px 8px 0 0;
}

.service-card .card-image img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.service-card .card-body {
  padding: 28px 24px 32px;
}

.service-card .card-body h3 {
  font-family: "Noto Sans JP", sans-serif;
  font-weight: 500;
  font-size: 18px;
  margin-bottom: 12px;
  color: #2C2C2C;
}

.service-card .card-body p {
  font-size: 14px;
  color: #757575;
  line-height: 1.8;
}

/* ----------------------------------------
   セクション5: 選ばれる理由
   ---------------------------------------- */
.reasons {
  background: #F2F0ED;
  padding: 110px 0;
}

.reasons-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.reason-card {
  background: #fff;
  border-radius: 12px;
  padding: 40px 36px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
  transition: transform 0.3s, box-shadow 0.3s;
}

.reason-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.reason-number {
  font-family: "Cormorant Garamond", serif;
  font-weight: 600;
  font-size: 56px;
  color: #4A6274;
  line-height: 1;
  margin-bottom: 16px;
}

.reason-card h3 {
  font-family: "Noto Sans JP", sans-serif;
  font-weight: 500;
  font-size: 18px;
  color: #2C2C2C;
  margin-bottom: 12px;
}

.reason-card p {
  font-size: 14px;
  color: #757575;
  line-height: 1.8;
}

/* ----------------------------------------
   セクション6: 施工事例ギャラリー
   ---------------------------------------- */
.works {
  background: #FAFAF8;
  padding: 110px 0;
}

.works-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.works-card {
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.05);
}

.works-image {
  overflow: hidden;
  aspect-ratio: 4 / 3;
}

.works-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}

.works-card:hover .works-image img {
  transform: scale(1.03);
}

.works-body {
  padding: 20px 18px;
}

.works-body h3 {
  font-family: "Noto Sans JP", sans-serif;
  font-weight: 500;
  font-size: 14px;
  color: #2C2C2C;
  margin-bottom: 8px;
  line-height: 1.5;
}

.works-meta {
  font-size: 13px;
  color: #757575;
}

.works-meta span {
  margin-right: 16px;
}

.works-more {
  text-align: center;
  margin-top: 48px;
}

.works-more a {
  font-size: 15px;
  color: #4A6274;
  font-weight: 500;
  border-bottom: 1px solid #4A6274;
  padding-bottom: 2px;
  transition: opacity 0.3s;
}

.works-more a:hover {
  opacity: 0.7;
}

/* ----------------------------------------
   セクション7: ターゲット別導線
   ---------------------------------------- */
.target {
  background: #F2F0ED;
  padding: 110px 0;
}

.target-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.target-card {
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
  transition: transform 0.3s, box-shadow 0.3s;
}

.target-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.target-card .card-image {
  overflow: hidden;
}

.target-card .card-image img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.target-card .card-body {
  padding: 28px 24px 32px;
}

.target-card .card-body h3 {
  font-family: "Noto Sans JP", sans-serif;
  font-weight: 500;
  font-size: 17px;
  color: #2C2C2C;
  margin-bottom: 12px;
}

.target-card .card-body p {
  font-size: 14px;
  color: #757575;
  line-height: 1.8;
  margin-bottom: 24px;
}

.btn-ghost {
  display: inline-block;
  border: 1.5px solid #4A6274;
  color: #4A6274;
  font-size: 14px;
  font-weight: 500;
  padding: 12px 28px;
  border-radius: 4px;
  transition: background 0.3s, color 0.3s, transform 0.3s;
}

.btn-ghost:hover {
  background: #4A6274;
  color: #fff;
  transform: translateY(-2px);
}

/* ----------------------------------------
   セクション8: お客様の声
   ---------------------------------------- */
.voice {
  background: #FAFAF8;
  padding: 110px 0;
}

.voice-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.voice-card {
  background: #fff;
  border-radius: 12px;
  padding: 36px 28px 32px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
  position: relative;
}

.voice-card::before {
  content: "\201C";
  position: absolute;
  top: 16px;
  left: 24px;
  font-family: "Cormorant Garamond", serif;
  font-size: 64px;
  font-weight: 600;
  color: #4A6274;
  line-height: 1;
  opacity: 0.3;
}

.voice-card .voice-text {
  font-size: 14px;
  line-height: 1.9;
  color: #2C2C2C;
  margin-bottom: 20px;
  padding-top: 20px;
}

.voice-card .voice-author {
  display: block;
  font-style: normal;
  font-size: 13px;
  color: #757575;
}

/* ----------------------------------------
   セクション9: よくあるご質問（FAQ）
   ---------------------------------------- */
.faq {
  background: #F2F0ED;
  padding: 110px 0;
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: #FAFAF8;
  border-radius: 8px;
  overflow: hidden;
}

.faq-item summary {
  display: flex;
  align-items: center;
  padding: 20px 24px;
  font-size: 15px;
  font-weight: 500;
  color: #2C2C2C;
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 60px;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::marker {
  display: none;
  content: "";
}

.faq-q {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 4px;
  background: #4A6274;
  color: #fff;
  font-family: "Cormorant Garamond", serif;
  font-weight: 600;
  font-size: 14px;
  margin-right: 14px;
  flex-shrink: 0;
}

/* +/- トグルアイコン */
.faq-item summary::after {
  content: "";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1.5px solid #4A6274;
  background: transparent;
}

/* + の横線 */
.faq-item summary::before {
  content: "";
  position: absolute;
  right: 28px;
  top: 50%;
  transform: translateY(-50%);
  width: 12px;
  height: 1.5px;
  background: #4A6274;
  z-index: 1;
  transition: transform 0.3s;
}

/* + の縦線（丸枠内の表現のため別要素が必要だが、summaryには疑似要素2つまでなので
   JS不使用で対応するためにbox-shadowで十分に代替） */
.faq-item:not([open]) summary::before {
  box-shadow: 0 0 0 0 #4A6274, 5.25px -5.25px 0 -4.5px #4A6274, -5.25px 5.25px 0 -4.5px #4A6274;
  /* 上記では難しいので、回転で表現する */
}

/* 開閉状態の制御: 閉じている時は + を表現 */
.faq-item:not([open]) summary .faq-toggle-v {
  display: block;
}

.faq-item[open] summary .faq-toggle-v {
  display: none;
}

/* トグル用の縦線スパン */
.faq-toggle {
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1.5px solid #4A6274;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.faq-toggle::before {
  content: "";
  position: absolute;
  width: 12px;
  height: 1.5px;
  background: #4A6274;
}

.faq-toggle .faq-toggle-v {
  position: absolute;
  width: 1.5px;
  height: 12px;
  background: #4A6274;
  transition: opacity 0.3s, transform 0.3s;
}

.faq-item[open] .faq-toggle .faq-toggle-v {
  opacity: 0;
  transform: rotate(90deg);
}

/* summary疑似要素をリセット（.faq-toggleスパンを使う場合） */
.faq-item summary::after,
.faq-item summary::before {
  content: none;
}

.faq-answer {
  padding: 0 24px 24px 66px;
  font-size: 14px;
  color: #757575;
  line-height: 1.9;
}

/* ----------------------------------------
   セクション10: CTA（最終）
   ---------------------------------------- */
.cta {
  position: relative;
  background: #34495E;
  padding: 100px 0;
  overflow: hidden;
}

.cta .cta-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.2;
}

.cta .cta-overlay {
  position: absolute;
  inset: 0;
  background: rgba(52, 73, 94, 0.82);
}

.cta .cta-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: #fff;
}

.cta .section-label {
  color: rgba(255, 255, 255, 0.7);
}

.cta .section-title {
  font-size: 34px;
  color: #fff;
  margin-bottom: 20px;
}

.cta .cta-sub {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 44px;
  line-height: 1.8;
}

.cta .cta-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.btn-line {
  display: inline-block;
  background: #06C755;
  color: #fff;
  font-size: 16px;
  font-weight: 500;
  padding: 16px 40px;
  border-radius: 4px;
  transition: transform 0.3s, box-shadow 0.3s;
}

.btn-line:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(6, 199, 85, 0.35);
}

.btn-white {
  display: inline-block;
  background: #fff;
  color: #34495E;
  font-size: 16px;
  font-weight: 500;
  padding: 16px 40px;
  border-radius: 4px;
  transition: transform 0.3s, box-shadow 0.3s;
}

.btn-white:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.2);
}

.cta-phone {
  font-family: "Cormorant Garamond", serif;
  font-weight: 600;
  font-size: 20px;
  color: rgba(255, 255, 255, 0.8);
  letter-spacing: 1px;
}

.cta-phone small {
  font-family: "Noto Sans JP", sans-serif;
  font-weight: 400;
  font-size: 13px;
  margin-left: 8px;
}

/* ----------------------------------------
   セクション11: フッター
   ---------------------------------------- */
.footer {
  background: #2C2C2C;
  color: #fff;
  padding: 64px 0 32px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-logo {
  font-family: "Cormorant Garamond", serif;
  font-weight: 600;
  font-size: 22px;
  color: #fff;
  letter-spacing: 2px;
}

.footer-logo-sub {
  font-size: 12px;
  color: #757575;
  margin-top: 4px;
}

.footer-nav {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-nav a {
  font-size: 13px;
  color: #fff;
  opacity: 0.8;
  transition: opacity 0.3s;
}

.footer-nav a:hover {
  opacity: 1;
}

.footer-area {
  font-size: 13px;
  color: #757575;
  text-align: center;
  margin-bottom: 24px;
}

.portfolio-notice-footer {
  text-align: center;
  font-size: 12px;
  color: #4A6274;
  padding: 12px 16px;
  border: 1px solid rgba(74, 98, 116, 0.25);
  border-radius: 6px;
  background: rgba(74, 98, 116, 0.08);
  margin-bottom: 20px;
}

.copyright {
  text-align: center;
  font-size: 12px;
  color: #757575;
}

/* ----------------------------------------
   レスポンシブ: タブレット（768px以下）
   ---------------------------------------- */
@media (max-width: 768px) {
  /* ヘッダー */
  .header-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(250, 250, 248, 0.98);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    flex-direction: column;
    padding: 16px 24px;
    border-bottom: 1px solid #E8E6E3;
    gap: 16px;
  }

  .header-nav.open {
    display: flex;
  }

  .hamburger {
    display: flex;
  }

  .header-btn {
    display: none;
  }

  /* ヒーロー */
  .hero {
    min-height: 100svh;
  }

  .hero-content h1 {
    font-size: 28px;
  }

  .hero-content p {
    font-size: 14px;
  }

  .hero-badge {
    top: 80px;
    left: 16px;
    font-size: 10px;
  }

  /* 悩み共感 */
  .concerns {
    padding: 80px 0;
  }

  .concerns-grid {
    flex-direction: column;
    gap: 40px;
  }

  .concerns .section-header {
    text-align: center;
  }

  /* サービス */
  .service {
    padding: 80px 0;
  }

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

  /* 選ばれる理由 */
  .reasons {
    padding: 80px 0;
  }

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

  /* 施工事例 */
  .works {
    padding: 80px 0;
  }

  .works-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  /* ターゲット別導線 */
  .target {
    padding: 80px 0;
  }

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

  /* お客様の声 */
  .voice {
    padding: 80px 0;
  }

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

  /* FAQ */
  .faq {
    padding: 80px 0;
  }

  /* CTA */
  .cta {
    padding: 80px 0;
  }

  .cta .section-title {
    font-size: 26px;
  }

  .cta .cta-buttons {
    flex-direction: column;
    align-items: center;
  }

  .btn-line,
  .btn-white {
    width: 80%;
    text-align: center;
  }

  /* フッター */
  .footer-inner {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .footer-nav {
    justify-content: center;
  }

  /* セクションタイトル */
  .section-title {
    font-size: 24px;
  }
}

/* ----------------------------------------
   レスポンシブ: スマートフォン（480px以下）
   ---------------------------------------- */
@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .hero-content {
    padding: 100px 16px 60px;
  }

  .hero-content h1 {
    font-size: 24px;
  }

  .btn-hero {
    padding: 14px 32px;
    font-size: 15px;
    width: 90%;
    text-align: center;
  }

  .concerns {
    padding: 64px 0;
  }

  .service {
    padding: 64px 0;
  }

  .reasons {
    padding: 64px 0;
  }

  .reason-card {
    padding: 28px 24px;
  }

  .reason-number {
    font-size: 44px;
  }

  .works {
    padding: 64px 0;
  }

  .works-grid {
    grid-template-columns: 1fr;
  }

  .target {
    padding: 64px 0;
  }

  .voice {
    padding: 64px 0;
  }

  .faq {
    padding: 64px 0;
  }

  .cta {
    padding: 64px 0;
  }

  .cta .section-title {
    font-size: 22px;
  }

  .btn-line,
  .btn-white {
    width: 90%;
    padding: 14px 24px;
    font-size: 15px;
  }

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

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

  .faq-item summary {
    font-size: 14px;
    padding: 16px 52px 16px 18px;
  }

  .faq-q {
    width: 24px;
    height: 24px;
    font-size: 12px;
    margin-right: 10px;
  }

  .faq-answer {
    padding: 0 18px 20px 52px;
    font-size: 13px;
  }

  .footer {
    padding: 48px 0 24px;
  }
}